CN109333747B

CN109333747B - Paving machine

Info

Publication number: CN109333747B
Application number: CN201811377445.6A
Authority: CN
Inventors: 王道江; 刘年祥; 黄宝平; 沈毅
Original assignee: Happy Wood Group Co ltd; Jiangsu Jiangyuan Wood Industry Co ltd; Yangzhou Happy Machinery Co ltd
Current assignee: Happy Wood Group Co ltd; Jiangsu Jiangyuan Wood Industry Co ltd; Yangzhou Happy Machinery Co ltd
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2023-07-18
Anticipated expiration: 2038-11-19
Also published as: CN109333747A

Abstract

The invention discloses a paving machine, which comprises a plurality of paving heads, wherein each paving head is provided with a paving rake group, each paving rake group comprises a plurality of paving rakes, and each paving rake comprises a paving rake roller and a plurality of orientation plates sleeved on the paving rake roller; the periphery of each orientation piece is provided with a sawtooth section and a sickle tooth section, the sawtooth section can generate dragging force for shavings to move between two adjacent orientation pieces, the sickle tooth section can generate poking force for shavings to move downwards, and the dragging force is larger than the poking force; when the saw tooth section can not drag the shavings to the position between the two orientation pieces for blanking, the sickle tooth section can stir the shavings to the downstream paving harrow. The directional piece of the paving rake of the paving machine provided by the invention is provided with the sickle tooth section and the saw tooth section, the sickle tooth section and the saw tooth section can generate different directional acting forces on shavings, and the sickle tooth section can stir shavings which are not easy to be discharged to the downstream paving rake so as to avoid blocking materials to a greater extent.

Description

Paving machine

Technical Field

The invention relates to the technical field of shaving board production equipment, in particular to a paving machine.

Background

The spreading machine for producing the shaving board comprises a plurality of spreading heads, each spreading head is provided with a spreading rake group, the existing spreading rake groups are provided with circular pieces, the periphery of each circular piece is uniformly provided with saw teeth, the circular pieces in the form of the circular pieces can only generate centripetal force along the circumferential direction, so that the shavings can be dragged to the space between the two spreading rakes to carry out blanking and spreading, and once the shavings cannot be smoothly blanked, the shavings can be blocked between the two spreading rakes, thereby blocking the shavings.

Therefore, how to provide a solution to overcome the above-mentioned drawbacks is still a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a paving machine, wherein a directional piece of a paving rake is provided with a sickle tooth section and a saw tooth section, the sickle tooth section and the saw tooth section can generate acting forces in different directions on shavings, and the sickle tooth section can stir shavings which are not easy to discharge to a downstream paving rake so as to avoid blocking materials to a large extent.

In order to solve the technical problems, the invention provides a paving machine, which comprises a plurality of paving heads, wherein each paving head is provided with a paving rake group, each paving rake group comprises a plurality of paving rakes, and each paving rake comprises a paving rake roller and a plurality of orientation pieces sleeved on the paving rake roller; the periphery of each orientation piece is provided with a sawtooth section and a sickle tooth section, the sawtooth section can generate a dragging force for shavings to move between two adjacent orientation pieces, the sickle tooth section can generate a poking force for shavings to move towards adjacent paving rakes, and the dragging force is larger than the poking force; when the saw tooth section can not drag the shavings to the position between the two orientation pieces for blanking, the sickle tooth section can stir the shavings to the adjacent paving harrow.

According to the paving machine provided by the invention, the saw tooth sections and the sickle tooth sections are arranged on the periphery of the paving rake orientation piece, and can generate different-direction acting forces on shavings, when the saw tooth sections can not smoothly drag shavings to a position between the two orientation pieces for blanking, the shifting force generated by the sickle tooth sections on shavings can change the movement direction of the shavings so as to shift the shavings to the downstream paving rake, so that blocking can be avoided to a greater extent, and the continuity of production is guaranteed.

Optionally, the number of the sawtooth sections is multiple, each sawtooth section is distributed at equal intervals along the circumferential direction, and the sickle tooth sections are arranged between every two adjacent sawtooth sections; the length of the sickle tooth section is smaller than that of the sawtooth section, the sickle tooth section comprises at least one sickle tooth, the length of the sickle tooth is larger than the width of the shavings, and the length of the sawtooth section is larger than the length of the shavings.

Optionally, the tooth shape of each sickle tooth is the same, and the number of the sickle tooth sections is e; along the extending direction of the paving harrow roller, E adjacent orientation sheets are in a group, in each group, the orientation sheet at the back rotates along the same direction along the circumference relative to the adjacent orientation sheet at the front Degree installation, wherein e equals 5 or 6,E equals 2 or 3.

Optionally, the sickle tooth is provided with a first tooth shape, and the first tooth shape is in a hook shape and comprises a hooked edge capable of poking shavings and a hooked bottom edge connected with the hooked edge; or the sickle tooth is provided with a second tooth shape, and the second tooth shape is U-shaped, and comprises a groove edge which is arranged oppositely and can stir shavings and a groove bottom edge which is connected with the two groove edges.

Optionally, the sickle teeth have two tooth shapes, and the sickle tooth sections with the two tooth shapes are sequentially arranged along the periphery of the orientation piece, and the number of the sickle tooth sections is 2 f; along the extending direction of the paving harrow roller, F adjacent orientation sheets are in a group, in each group, the orientation sheet at the back rotates along the same direction along the circumference relative to the adjacent orientation sheet at the frontDegree installation, wherein f is equal to 2 or 3 and f is equal to 3 or 4.

Optionally, two the profile of tooth includes first profile of tooth and second profile of tooth, first profile of tooth is colluded the shape, including can stir the wood shavings collude limit and with collude the limit that the limit links to each other, the second profile of tooth is U-shaped groove form, including the relative groove limit that can stir the wood shavings and connect two the groove base on groove limit that sets up.

Optionally, the orientation tab comprises a large tab and a small tab, the large tab having a larger diameter than the small tab; one large piece and at least one small piece form a small group, and a plurality of small groups of orientation pieces are sequentially arranged along the extending direction of the paving harrow roller; or, one small piece and at least one large piece form a small group, and a plurality of small groups of orientation pieces are sequentially arranged along the extending direction of the paving rake roller.

Optionally, one large piece and one small piece form a small group, a plurality of small groups of orientation pieces are sequentially arranged along the extending direction of the paving rake roller, and in each small group, the installation angles of the orientation pieces are consistent.

Optionally, the tooth shapes of the sickle teeth are the same, the number of the sickle tooth sections is E, and along the extending direction of the paving rake roller, adjacent E subgroups are a large group, in each large group, the orientation piece of the rear subgroup rotates along the same circumferential direction relative to the orientation piece of the front adjacent subgroupDegree installation, wherein e equals 5 or 6,E equals 2 or 3; or the sickle teeth are provided with two tooth shapes, the sickle tooth sections with two tooth shapes are sequentially arranged along the periphery of the orientation piece, the number of the sickle tooth sections is 2F, the adjacent F subgroups are a group along the extending direction of the paving harrow roller, in each group, the orientation piece of the rear subgroup rotates in the same direction along the periphery relative to the orientation piece of the front adjacent subgroup >Degree installation, wherein f is equal to 2 or 3 and f is equal to 3 or 4.

Optionally, an anti-rotation structure is arranged between the inner edge of each orientation piece and the outer wall surface of the paving rake roller, and a first spacer bush is arranged between two adjacent orientation pieces.

Optionally, the paving rake group can be used as a longitudinal paving rake group, and when the paving rake group is used as the longitudinal paving rake group, the distance between two adjacent orientation pieces of the downstream paving rake is larger than the distance between two adjacent orientation pieces of the upstream adjacent paving rake; or from upstream to downstream, each C paving harrows are of one type, in the same type, the distance between every two adjacent orientation plates of each paving harrow is the same, and in the two adjacent types, the distance between two adjacent orientation plates of the downstream type paving harrow is larger than the distance between two adjacent orientation plates of the upstream type paving harrow.

Optionally, from upstream to downstream, each paving rake is divided into three types, the distance between two adjacent orientation pieces of the most upstream type of paving rake is 24-28mm, the distance between two adjacent orientation pieces of the most downstream type of paving rake is 59-63mm, and the distance between two adjacent orientation pieces of the middle type of paving rake is 38-42mm.

Optionally, a bulk material rake group is further arranged above the paving rake group, the bulk material rake group comprises a plurality of bulk material rakes, each bulk material rake comprises a bulk material rake roller and a plurality of rolling pins arranged on the outer wall surface of the bulk material rake roller, and the distance between two adjacent bulk material rakes is larger than the thickness of the shavings.

Optionally, the number of the bulk material rakes is the same as that of the paving rakes, and from upstream to downstream, each bulk material rake is also divided into three types; the number of the bulk cargo rakes at the most upstream is the same as that of the paving rakes at the most upstream, and the bulk cargo rakes are arranged in a one-to-one correspondence manner; the number of the middle bulk cargo rakes is the same as that of the middle paving rakes, and the bulk cargo rakes and the paving rakes are arranged in a one-to-one correspondence manner; the number of the most downstream bulk material rakes is the same as that of the most downstream pavement rakes, and the bulk material rakes and the pavement rakes are arranged in a one-to-one correspondence manner; the distance between two adjacent bulk material rakes of two adjacent bulk material rakes gradually increases from upstream to downstream.

Optionally, the paving rake group can also be used as a transverse paving rake group, and when the paving rake group is used as the transverse paving rake group, the distance between two adjacent orientation pieces of the paving rake gradually changes along the extending direction of the paving rake roller; or, along the extending direction of the paving rake roller, every D directional plates of the paving rake are of one type, in the same type, the distances between every two adjacent directional plates are the same, and the distances between every two adjacent directional plates of each type of directional plates are gradually changed along the extending direction of the paving rake roller.

Optionally, from upstream to downstream, the orientation pieces of the paving rake are divided into three types, the spacing between two adjacent orientation pieces of the most upstream type is 24-28mm, the spacing between two adjacent orientation pieces of the most downstream type is 59-63mm, and the spacing between two adjacent orientation pieces of the middle type is 38-42mm.

Optionally, in the transverse direction, the rotation speed of the paving rake at the upper stage is greater than that of the adjacent paving rake at the lower stage, and the rotation direction of the paving rake at the lowest stage is opposite to that of the other paving rakes.

Optionally, the radial dimension of the orientation piece of the lowest stage of the paving rake is larger than the orientation pieces of the other paving rakes.

Optionally, the number of the paving heads is 7, and the paving heads comprise a first longitudinal paving head, a first transverse paving head, a second longitudinal paving head, a fine material paving head, a third longitudinal paving head, a second transverse paving head and a fourth longitudinal paving head along the running direction of the slab; the first longitudinal paving head, the second longitudinal paving head, the fine paving head, the third longitudinal paving head and the fourth longitudinal paving head are respectively provided with the longitudinal paving rake group, and the first transverse paving head and the second transverse paving head are respectively provided with the transverse paving rake group.

Optionally, the direction from the upper stage to the lower stage of the transverse pavement rake group of the first transverse pavement head is opposite to that of the second transverse pavement head.

Optionally, at least two longitudinal paving heads in each paving head are in a use state.

Optionally, the device further comprises a lifting mechanism, wherein the lifting mechanism is used for adjusting the height of the paving rake group and comprises a plurality of lifting units, the lifting units are installed on the paving rake frame at intervals along the circumferential direction, each lifting unit comprises a lifting assembly and a movable connecting rod, the lifting assembly is installed on the frame of the upper part of the paving rake group, the telescopic part of the lifting assembly can vertically displace, one end of the movable connecting rod is hinged to the telescopic part, and the other end of the movable connecting rod is hinged to the paving rake frame.

Optionally, the lifting unit further comprises a guide assembly, the guide assembly comprises a first guide piece and a second guide piece, the first guide piece is arranged vertically, and the second guide piece is fixed on the paving rake frame; the second guide piece is matched with the first guide piece in a sliding way along the up-down direction so as to guide the pavement rake to lift.

Optionally, one of the first guide piece and the second guide piece is provided with a sliding rail, and the other one is provided with a sliding groove, and the sliding rail is inserted into the sliding groove and can slide in the sliding groove.

Optionally, the second guide member is provided with a bar hole, and the external connecting member can pass through the bar hole, so that the second guide member is fixed on the paving rake frame, and the installation position of the second guide member on the paving rake frame can be adjusted by adjusting the position of the connecting member in the bar hole.

Optionally, the lifting assembly comprises a driving member and a transmission member, and a driving shaft of the driving member is connected with an input shaft of the transmission member.

Optionally, the lower end of the telescopic part is connected with a first lifting lug, and is hinged with the upper end of the movable connecting rod through the first lifting lug.

Optionally, the device further comprises a controller and a monitoring component, wherein the monitoring component is used for monitoring thickness information of the slab; the controller is in signal connection with the monitoring component and the driving piece, and can receive the thickness information and control the start and stop of the driving piece according to the thickness information so as to adjust the height of the paving rake rack.

Optionally, the number of the lifting units is four, and the four lifting units are arranged at four corners of the paving rake frame in a one-to-one correspondence manner.

Optionally, the upper part is a bulk rake group.

Optionally, each paving head includes paving storehouse, paving storehouse's exit end is equipped with the unloading rake group, the unloading rake group includes a plurality of unloading rakes, each the unloading rake all includes the unloading rake roller, the unloading rake roller is equipped with a plurality of flitch along axial interval, each the flitch all includes a plurality of blades along circumference interval setting, the blade includes stalk portion and head, the head install in the outer end of stalk portion, and can be relative the stalk portion is towards direction of rotation slope.

Optionally, the blanking piece further comprises a ring-shaped substrate, the inner end of the handle is fixed on the substrate, and the blanking piece is installed on the blanking harrow roller through the substrate jacket and can synchronously rotate along with the blanking harrow roller.

Optionally, one of the inner wall surface of the substrate and the outer wall surface of the blanking rake roller is provided with a convex key extending along the axial direction, and the other is provided with a key groove extending along the axial direction, and in an assembled state, the convex key can be inserted into the key groove.

Optionally, the central axis of the handle is perpendicular to the central axis of the blanking rake roller, and is arranged at an included angle with the radial direction of the blanking rake roller.

Optionally, the number of the blades is three, and the three blades are equally spaced along the circumferential direction.

Optionally, along the extending direction of the blanking rake roller, the adjacent N blanking sheets are grouped, and in each group, the rear blanking sheet rotates along the same circumferential direction relative to the front adjacent blanking sheetDegree installation, where N is equal to 3 or 4.

Optionally, a second spacer is arranged between two adjacent blanking sheets, and two ends of the second spacer are respectively propped against the two adjacent blanking sheets.

Optionally, the axial length of the second spacer is 25-30mm.

Optionally, the number of the blanking rakes is 6 or 7, the central axes of the blanking rake rollers of the blanking rakes are positioned on the same installation surface, and the central axes of the blanking rake rollers are parallel to each other and are arranged at equal intervals; from top to bottom, the installation surface gradually inclines to the front of the feeding direction, and the included angle between the installation surface and the horizontal plane is 45-47 degrees.

Optionally, the paving bin further comprises a bin body, a conveying component is arranged at the bottom of the bin body and used for conveying the wood shaving material pile, a sweeping rake is arranged at the top of the bin body and used for sweeping the top of the wood shaving material pile, and an observation window is arranged at the side part of the bin body.

Optionally, the number of the paving heads is 7, and along the running direction of the slab, the paving heads comprise a first longitudinal paving head, a first transverse paving head, a second longitudinal paving head, a fine paving head, a third longitudinal paving head, a second transverse paving head and a fourth longitudinal paving head.

Drawings

FIG. 1 is a schematic view of a construction of one embodiment of a spreader provided by the present invention;

FIG. 2 is a schematic view of the structure of the first longitudinal paving head;

FIG. 3 is a schematic view of the construction of one embodiment of a paving rake assembly;

FIG. 4 is an enlarged view of a portion of two adjacent paving rakes;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a schematic view of the mounting structure of an orientation tab;

FIG. 7 is a schematic view of the mounting structure of a rear orientation tab adjacent to the orientation tab of FIG. 6;

FIG. 8 is a schematic view of the mounting structure of the rear orientation tab adjacent to the orientation tab of FIG. 7;

FIG. 9 is a schematic view of the mounting structure of the rear orientation tab adjacent to the orientation tab of FIG. 8;

FIG. 10 is a schematic view of a bulk material rake;

FIG. 11 is a connection structure diagram of the lifting mechanism and the paving rake assembly;

FIG. 12 is a partial view of FIG. 11 from a side view;

FIG. 13 is a connecting structure diagram of the movable connecting rod and the first lifting lug and the transmission member;

FIG. 14 is a block diagram of a guide assembly;

FIG. 15 is a top view of FIG. 14;

FIG. 16 is a schematic view of the structure of the blanking rake;

FIG. 17 is a schematic view of the mounting structure of a blanking sheet;

FIG. 18 is a schematic view of the mounting structure of a rear blanking panel adjacent to the blanking panel of FIG. 17;

FIG. 19 is a schematic view of the mounting structure of a rear blanking panel adjacent to the blanking panel of FIG. 18;

FIG. 20 is a schematic view of a construction of one embodiment of a transverse pavement rake assembly provided by the present invention;

FIG. 21 is a top view of FIG. 19;

fig. 22 is a connection structure diagram of two adjacent paving rakes in the transverse paving rake group.

The reference numerals in fig. 1-22 are illustrated as follows:

1 paving rake group, 11 paving rake frame, 12 paving rake, 121 paving rake roller, 122 orientation piece, 122-1 big piece, 122-2 small piece, 122a sawtooth section, 122b sickle tooth section, 122b-1 edge, 122b-2 edge, 122b-3 groove edge, 122b-4 groove edge, 123 first spacer;

the lifting device comprises a lifting unit 2, a lifting assembly 21, a driving piece 211, a driving shaft 211a, a driving piece 212, a telescopic part 212a, a sleeve 212b, a movable connecting rod 22, a guiding assembly 23, a first guiding piece 231, a sliding rail 231a, a second guiding piece 232, a sliding groove 232a, a strip-shaped hole 232b, a first lifting lug 24 and a second lifting lug 25;

3 bulk material rake groups, 31 bulk material rake frames, 32 bulk material rakes, 321 bulk material rake rollers and 322 needle rollers;

4 blanking harrow group, 41 blanking harrow, 411 blanking harrow roller, 411a key slot, 412 blanking sheet, 412a blade, 412a-1 handle, 412a-1a first handle edge, 412a-1b second handle edge, 412a-2 head, 412a-2a first head edge, 412a-2b second head edge, 412b substrate, 412b-1 convex key, 413 second spacer;

5 paving a bin, 51 bin bodies, 52 conveying components and 53 sweeping rakes;

6, transversely paving rake groups;

7 a slab frame;

the device comprises a first longitudinal paving head 1, a first transverse paving head 2, a second longitudinal paving head 3, a fine paving head 4, a third longitudinal paving head 5, a second transverse paving head 6 and a fourth longitudinal paving head 7;

s, piling the shavings.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The term "plurality" as used herein refers to a plurality, typically two or more, of indefinite quantities; and when "a number" is used to denote the number of a certain number of components, the number of components is not necessarily related to each other.

The terms "first," "second," and the like herein are merely used for convenience in describing two or more structures or components having the same or similar structure, and do not denote any particular limitation of the order.

The descriptions of "upstream", "downstream", etc. herein are based on the traveling direction of the slab, and in fact, the traveling direction of the slab may also be referred to as the longitudinal direction; the descriptions of the "upper level" and "lower level" herein are only for convenience of distinguishing the directions, and do not represent the meanings of the levels and functionally subordinate or upper and lower levels, and the directions from the upper level to the lower level are actually transverse with respect to the longitudinal directions described above; the front-rear direction of the "front face" as used herein refers to the extending direction of the paving rake roller or the discharging rake roller, and for the paving rake roller, the front-rear direction may be the upstream-downstream direction (i.e., longitudinal direction) or the upstream-downstream direction (i.e., transverse direction) depending on the kind of the paving head used, and for the discharging rake roller, the front-rear direction generally refers to the upstream-downstream direction (i.e., transverse direction).

Referring to fig. 1 to 10, fig. 1 is a schematic structural view of an embodiment of a spreading machine according to the present invention, fig. 2 is a schematic structural view of a first longitudinal spreading head, fig. 3 is a schematic structural view of an embodiment of a spreading rake group, fig. 4 is a partially enlarged view of two adjacent spreading rakes, fig. 5 is a side view of fig. 4, fig. 6 is a schematic structural view of a mounting structure of one orientation plate, fig. 7 is a schematic structural view of a mounting structure of a rear orientation plate adjacent to the orientation plate of fig. 6, fig. 8 is a schematic structural view of a mounting structure of a rear orientation plate adjacent to the orientation plate of fig. 7, and fig. 9 is a schematic structural view of a bulk rake adjacent to the orientation plate of fig. 8.

As shown in fig. 1 and 2, the invention provides a paving machine, which comprises a plurality of paving heads, wherein each paving head comprises a paving bin 5, the paving bins 5 are equal to bins of the paving machine, each paving machine comprises a bin body 51, a conveying component 52 is arranged at the bottom of each bin body 51, and the conveying component 52 can be online conveying equipment such as a belt conveyer and the like and is used for conveying a wood shaving material pile S.

The top of the bin body 51 can be provided with a sweeping rake 53, the sweeping rake 53 can drag the comb-tooth-shaped rake body by adopting a chain, and the top of the shaving pile S is horizontally combed and swept by adopting a mode of reversely moving with the movement direction of the shaving pile S, so that the section of the shaving pile S in the paving bin 5 can be maintained to be rectangular, the monitoring of the blanking quantity is facilitated, and stable blanking is further ensured. The side of the bin 51 may be provided with an observation window for observing the accumulation of the stack S of shavings in the bin 51.

Referring to fig. 3-5, the paving machine further includes a paving rake 1, a slab frame 7 is disposed below the paving rake 1 and is used for supporting the operation of slabs, and the paving machine includes a plurality of paving rakes 12, each paving rake 12 includes a paving rake roller 121 and a plurality of orientation pieces 122 sleeved on the paving rake roller 121, each paving rake roller 121 is connected with a driving member in a motor and other forms, so as to rotate under the action of the driving member, and then the orientation pieces 122 mounted on the paving rake roller 121 drive shavings to perform blanking paving.

In contrast to the prior art, the periphery of the orientation piece 122 is provided with a saw tooth section 122a and a sickle tooth section 122b, the saw tooth section 122a can generate a dragging force for the shavings to move between two adjacent orientation pieces 122 for blanking, and the sickle tooth section 122b can generate a poking force for the shavings to move towards an adjacent paving rake, and the dragging force is larger than the poking force.

With this structure, when the shavings fall to the paving rake 12, the drag force of the sawtooth section 122a is greater than the poking force of the sickle tooth section 122b, so that the saw tooth section 122a will act preferentially to drag the shavings between the two orientation pieces 122 for blanking; and if the saw tooth section 122a cannot drag the shavings to the space between the two orientation pieces 122 for normal blanking due to oversized shavings, poor shavings smoothness and the like, the sickle tooth section 122b can generate poking forces in different directions for the shavings so as to poke the shavings which cannot be blanked to the adjacent paving harrow 12, thereby avoiding blocking to a greater extent and being beneficial to ensuring the continuity of production.

In a specific embodiment, the number of the saw tooth sections 122a may be multiple, each saw tooth section 122a may be equally spaced along the circumferential direction, and a sickle tooth section 122b may be disposed between two adjacent saw tooth sections 122a, i.e., the number of the saw tooth sections 122a and the number of the sickle tooth sections 122b may be the same. In this way, in the process that the orientation piece 122 rotates for one circle, the alternating actions of dragging and poking for many times can be output, so that the acting force direction on the shavings is continuously changed, smooth blanking of the shavings is facilitated, and blockage can be avoided to a greater extent.

As previously described, the toggle effect of the sickle tooth section 122b needs to be weaker than the serrated section 122a, that is, the dragging action of the serrated section 122a should have priority, for which the length of the sickle tooth section 122b may be set smaller than the serrated section 122a, specifically, the length of the sickle tooth section 122b may be set to about half of the serrated section 122a to cut down the toggle force generated by the sickle tooth section 122 b. The length of the saw tooth section 122a may be greater than the length (average length) of the shavings to continuously generate a dragging force for the shavings, so that the shavings may be more smoothly blanked and paved.

The sickle tooth section 122b may comprise at least one sickle tooth, it being understood that the sickle tooth section 122b primarily functions to redirect the shavings, which do not require a continuous driving force for the shavings. Thus, one of the sickle tooth sections 122b does not need to include as many sickles as possible, and in an embodiment of the invention, as shown in fig. 3, one of the sickle tooth sections 122b may include only one sickle tooth, and the length of the sickle tooth may be greater than the width (average width) of the shavings to better stir the shavings, under which the shavings will disengage from the orientation piece 122 of the current paving rake 12 and overlap the orientation piece 122 of the adjacent paving rake 12, and during rotation of the two paving rakes 12, the shavings will smoothly transfer to the adjacent paving rake 12 for blanking.

The paving rake 1 may be used as a longitudinal paving rake, and the paving rake roller 121 of each paving rake 12 may be substantially perpendicular to the running direction of the slabs to perform longitudinal paving. When the longitudinal paving rake group is used, the axial distance between the downstream paving rake 12 and the adjacent two orientation pieces 122 of the upstream paving rake 12 can be different, and the closer to the downstream in the rotation direction, the larger the distance between the adjacent two orientation pieces 122 of the paving rake 12 can be, so that the shavings which are transmitted by the upstream paving rake 12 and are not easy to be discharged can be smoothly discharged in the downstream as much as possible.

The distance between two adjacent orientation pieces 122 can be controlled by the first spacer bush 123, and when the two orientation pieces 122 are installed, two ends of the first spacer bush 123 can respectively abut against the two adjacent orientation pieces 122 to limit the installation position and the distance between the two orientation pieces 122; the radius of the orientation tab 122 minus the thickness of the first spacer 123 is the depth of the orientation tab 122, which should be greater than or near the average length of the wood shavings.

In one scheme, in two adjacent paving rakes 12, the distance between two adjacent orientation plates 122 of the downstream paving rake 12 may be larger than the distance between two adjacent orientation plates 122 of the upstream adjacent paving rake 12, that is, from upstream to downstream, the distance between two adjacent orientation plates 122 of each paving rake 12 may be gradually increased, and if the shavings cannot be smoothly discharged, the shavings will be gradually transferred to the downstream paving rake 12 for discharging.

In another aspect, from upstream to downstream, each C paving rakes 12 may be grouped into one category, e.g., X paving rakes, then together may include X/C (if not an integer, rounding may be performed by tailrace or by progressive) paving rakes; in the same class, the spacing between two adjacent directional plates 122 of each paving rake 12 may be the same, and in two adjacent classes, the spacing between two adjacent directional plates 122 of a downstream paving rake 12 may be greater than the spacing between two adjacent directional plates 122 of an upstream paving rake 12.

In comparison, the two schemes can realize smooth feeding of the shavings conveyed from the upstream, and in the latter scheme, a plurality of paving rakes 12 with the same spacing between two adjacent orientation plates 122 can be arranged, and the plurality of paving rakes 12 can be adjacent, so that the problem of blockage caused by non-shavings size can be solved to a large extent, and further, the shavings can be better fed in a grading manner, so that smoothness of the shavings feeding process is ensured as much as possible.

As shown in fig. 3 and 4, each of the orientation pieces 122 of two adjacent paving rakes 12 may be arranged alternately, that is, one orientation piece 122 may be inserted between two adjacent orientation pieces 122 of the other, so that the axial gap between each orientation piece 122 of two paving rakes 12 is an effective gap through which shavings can pass.

Specifically, the respective paving rakes 12 as the longitudinal paving rake group 1 can be classified into three types: the spacing between adjacent orientation pieces 122 of the most upstream paving rake 12 can be the smallest for allowing the smaller shavings to pass through, the spacing between two adjacent orientation pieces 122 can be set to be 24-28mm, taking the thickness of the orientation piece 122 as 2mm as an example, and the effective gap of the paving rake 12 is 11-13mm; the spacing between two adjacent directional plates 122 of the downstream-most paving rake 12 is the largest, so as to allow the larger shavings to pass through, the spacing between two adjacent directional plates 122 can be 59-63mm, and the effective gap of the paving rake 12 can be 28.5-30.5mm; the middle type of paving rake 12 is used for passing the middle size wood shavings, the distance between two adjacent orientation pieces 122 can be set to be 38-42mm, and the effective gap of the paving rake 12 is 18-20mm.

It should be understood that the description of the separation of the paving rake 12 into three types and the spacing between the adjacent directional plates 122 of the three types of paving rake 12 is merely an exemplary description of an embodiment of the present invention, and is not intended to limit the scope of the present invention; in practice, the rake 12 may be divided into four or more types, and the gap between the orientation pieces 122 may be changed according to the difference in the sizes of the wood shavings.

An anti-rotation structure can be arranged between the inner edge of each orientation piece 122 and the outer wall surface of the paving rake roller 121 so as to ensure that the orientation pieces 122 and the paving rake roller 121 can synchronously rotate.

In one embodiment, the cross section of the mating section of the paving rake roller 121 and the orientation piece 122 may be set to be non-circular, such as oval, square, or oval (in the drawings), and accordingly, the inner hole of the orientation piece 122 may be set to be a non-circular hole matching with the paving rake roller 12, such as oval, square, or oval (in the drawings), so that when the orientation piece 122 is sleeved on the paving rake roller 121, no synchronous rotation will occur therebetween.

In another embodiment, one of the inner wall of the orientation piece 122 and the outer wall of the paving rake roller 121 may be provided with a key portion extending in the axial direction, and the other may be provided with a groove portion extending in the axial direction, and in the assembled state, the key portion may be inserted into the groove portion, so that the synchronous rotation of the orientation piece 122 and the paving rake roller 121 can be ensured.

In this embodiment, the number of the key portions and the groove portions is not limited, and may be one or a plurality of. When there are a plurality of the positioning plates, the mounting positions of the positioning plates and the positioning plates need to be matched, so that each key part can be inserted into the corresponding groove part in a one-to-one correspondence manner, and under the condition of a plurality of the positioning plates, the inner hole wall of the positioning plate 122 and the outer wall surface of the paving rake roller 121 can be simultaneously provided with the key part and the groove part.

In each of the above-mentioned schemes, the saw tooth sections 122a are equally spaced along the circumferential direction, and the sickle tooth sections 122b are disposed between two adjacent saw tooth sections 122a, and taking 6 sickle tooth sections 122b as an example, after one sickle tooth section 122b contacts with the wood shavings, the next sickle tooth section 122b contacts with the wood shavings again to require the paving rake roller 121 to rotate 60 degrees, so, if the sickle tooth section 122b is required to stir the putty wood shavings in time, the paving rake roller 121 is required to have a larger rotation speed, and the larger rotation speed is not beneficial to smooth paving of the wood shavings in the longitudinal direction or the transverse direction, but may cause the wood shavings to be pricked into the slab in the vertical direction, so as to affect the final quality of the shaving board.

In view of this, the present invention provides a scheme in which each of the orientation pieces 122 is installed in a staggered manner in the circumferential direction along the extending direction of the paving rake roller 121, so as to reduce the requirement for high rotation speed of the paving rake roller 121. At this time, the description of the situation can be performed according to whether the dimensions of the orientation pieces 122 on the paving rake roller 121 are the same.

In the first case, the dimensions of the orientation tabs 122 may be the same, in which case it may also be described differently depending on whether the tooth profiles of the tooth segments 122b are the same:

1) Where the tooth profiles are identical, adjacent tooth segments 122a, 122b may comprise an equal segment. Setting the number of the sickle tooth sections 122b to be E, along the extending direction (i.e. the front-rear direction) of the paving rake roller 121, adjacent E orientation pieces 122 can be grouped into one group, and in each group, the rear orientation piece 122 can rotate along the same circumferential direction (clockwise or anticlockwise) relative to the front adjacent orientation piece 122 Degree installation, wherein e equals 5 or 6,E equals 2 or 3.

Taking e=6, e=2 as an example, the sickle tooth section 122b may comprise six sections, adjacent two orientation tabs 122 may be grouped together, and adjacent two orientation tabs 122 may be mounted in a 30 degree circumferential offset. Along the extension direction (front to back) of the paving rake roller 121, each of the orientation pieces 122 may be numbered: 1. 2, 3 … (2n+1), (2n+2) …, where n is a natural number greater than 0, the 1 st orientation piece 122 may have the same mounting angle as the (2n+1) th orientation piece 122, and for convenience of description, this portion of the orientation pieces 122 may be referred to as a type of orientation piece, the second orientation piece 122 may have the same mounting angle as the (2n+2) th orientation piece 122, and this portion of the orientation pieces 122 may be referred to as a type of orientation piece; in the process of paving the harrow roll 121, after the sickle tooth sections 122b of the first type of orientation plates 122 are contacted with the shavings, the sickle tooth sections 122b of the second type of blanking plates 122 can rotate to the positions of the sickle tooth sections 122b of the previous type of orientation plates 122 for supplementing the positions, that is, the paving harrow roll 121 only needs to rotate for 30 degrees, the sickle tooth sections 122b can act on the shavings, and compared with the scheme that all the orientation plates 122 are installed along the same angle, the rotating speed requirement of the paving harrow roll 121 can be reduced by half, and further the energy consumption can be greatly reduced.

In this arrangement, the sickle tooth may have a first tooth form, which may be hook-shaped, including a hooked edge 122b-1 capable of toggling the shavings downstream and a hooked bottom edge 122b-2 connected to the hooked edge 122b-1, the hooked edge 122b-1 may extend generally radially of the orientation tab 122 and the hooked bottom edge 122b-2 may extend in a rotational direction relative to the hooked edge 122b-1, with reference to fig. 4, such that the hooked edge 122b-1 toggles the shavings downstream when the orientation tab 122 is rotated; alternatively, the sickle tooth may have a second tooth shape, which may be a U-shaped slot shape, comprising oppositely disposed slot sides 122b-3 capable of toggling shavings and slot bottom sides 122b-4 connecting the two slot sides 122b-3, since the second tooth shape has two opposite slot sides 122b-3, one slot side 122b-3 is available for toggling shavings no matter in which direction the orientation tab 122 is rotated.

It will be appreciated that the above description of the first tooth form and the second tooth form is merely an exemplary description of an embodiment of the present invention, and is not intended to limit the scope of the paving machine provided by the present invention, and that the sickle tooth segment 122b may be provided in other tooth forms as long as the relevant function is satisfied.

2) When the tooth profiles are different, taking the above-mentioned first tooth profile and second tooth profile as an example, the tooth segments 122b having the two tooth profiles may be sequentially arranged along the outer periphery of the orientation piece 122, and the number of the tooth segments 122b is set to be 2f, wherein f tooth segments 122b having the first tooth profile and the second tooth profile are respectively provided; along the extending direction of the paving rake roller 121, the adjacent F directional plates 122 can be a group, in each group, the rear directional plate 122 can rotate along the same direction along the circumference relative to the front adjacent directional plate 122 Degree installation, wherein f is equal to 2 or 3 and f is equal to 3 or 4.

Taking f=3, f=4 as an example, there are six sickle tooth segments 122b, three of which 122b have a first tooth shape and the other three sickle tooth segments 122b have a second tooth shape, referring to fig. 6-9, fig. 7 is an adjacent orientation piece 122 behind fig. 6, fig. 8 is an adjacent orientation piece 122 behind fig. 7, fig. 9 is an adjacent orientation piece 122 behind fig. 8, fig. 6-9 just shows a set of adjacent orientation pieces 122, the orientation piece 122 in fig. 7 is mounted with an equivalent 30 degree counterclockwise rotation of the orientation piece 122 in fig. 6, the orientation piece 122 in fig. 8 is mounted with an equivalent 30 degree counterclockwise rotation of the orientation piece 122 in fig. 8.

Along the extension direction (front to back) of the paving rake roller 121, each of the orientation pieces 122 may be numbered: 1. 2, 3, 4 … (4n+1), (4n+2), (4n+3), (4n+4) …, wherein n is a natural number greater than 0, and according to the above-described mounting manner, the 1 st orientation piece 122 may have the same mounting angle as the (4n+1) th orientation piece 122, for convenience of description, the part of the orientation pieces 122 may be referred to as a type of orientation piece, the 2 nd orientation piece 122 may have the same mounting angle as the (4n+2) th orientation piece 122, the part of the orientation pieces 122 may be referred to as a type of orientation piece, the 3 rd orientation piece 122 may have the same mounting angle as the (4n+3) th orientation piece 122, the part of the orientation pieces 122 may be referred to as three types of orientation pieces, the 4 th orientation piece 122 may have the same mounting angle as the (4n+4) th orientation piece 122, and the part of the orientation piece 122 may be referred to as four types of orientation pieces; in the process of rotating the paving rake roller 121, after the sickle tooth sections 122b of the first type of orientation plates 122 are contacted with the shavings, the sickle tooth sections 122b (the tooth shape is changed) of the second type of blanking plates 122 can be rotated to the positions of the sickle tooth sections 122b of the previous type of orientation plates 122 for supplementing positions, and likewise, after the sickle tooth sections 122b of the second type of orientation plates (the third type of orientation plates) are contacted with the shavings, the third type of orientation plates (the fourth type of orientation plates) can be supplemented positions only by rotating for 30 degrees, that is, when the paving rake roller 121 rotates for 30 degrees, the sickle tooth sections 122b act on the shavings, compared with the scheme of the same angle installation of the orientation plates 122, the rotating speed requirement of the paving rake roller 121 can be greatly reduced, and the energy consumption can be further reduced.

In fact, 2) and 1) are all mounted by rotating the rear orientation piece 122 on the same paving rake roller 121 by 30 degrees in the same direction with respect to the front adjacent orientation piece 122, and the difference is that the tooth shapes of the respective sickle tooth sections 122b in 2) embodiment may be different, and in the above description, two tooth shapes are taken as an example, and in fact, three or more different tooth shapes may be present, but in view of the difficulty of processing and mounting, in the embodiment of the present invention, the above-mentioned scheme with two tooth shapes or only one tooth shape is preferably adopted.

In the second case, as shown in fig. 4 and 5, the orientation tab 122 may include a large tab 122-1 and a small tab 122-2, the large tab 122-1 having a larger diameter than the small tab 122-2. When assembled, one large piece 122-1 and at least one small piece 122-2 can form a small group, and a plurality of small group orientation pieces 122 can be sequentially arranged along the extending direction of the paving rake roller 121; alternatively, one small piece 122-2 and at least one large piece 122-1 may form a small group, and a plurality of small groups of orientation pieces 122 may be sequentially provided along the extending direction of the paving rake roller 121.

In each group, the installation angles of the orientation pieces 122 may be consistent, and since the orientation pieces 122 of the group are staggered, the saw tooth sections 122a of the orientation pieces 122 may act on different positions of the shavings to generate forces of different sizes and different directions, so as to force the shavings to change the motion track, so that the shavings can be more easily dragged to the gaps between the orientation pieces 122, and the blanking and paving can be smoothly performed along the gaps.

In the embodiment of the present invention, a scheme that one large piece 122-1 and one small piece 122-2 form a small group can be adopted, so as to facilitate installation, and specifically, the present invention can be described in terms of whether the tooth shapes are the same or not: 1) The tooth shapes of the sickle teeth are the same, the number of the sickle tooth sections 122b can be set to be E, and the adjacent E subgroups can be a large group along the extending direction of the paving rake roller 121, in each large group, the orientation piece 122 of the rear subgroup rotates along the same direction along the circumference relative to the orientation piece 122 of the front adjacent subgroupDegree installation, wherein e equals 5 or 6,E equals 2 or 3; 2) The sickle teeth can have two tooth shapes, and the sickle tooth sections 122b with two tooth shapes can be arranged along the periphery of the orientation piece 122 in sequence, the number of the sickle tooth sections 122b can be set to be 2F, and the adjacent F subgroups form a large group along the extending direction of the paving rake roller 121, and in each large group, the orientation piece 122 of the rear subgroup is oriented relative to the front adjacent subgroupThe tab 122 rotates in the same direction in the circumferential direction>A degree of installation wherein f is equal to 2 or 3 and f is equal to 3 or 4, as well as the sickle tooth section 122b in the above arrangement may have more than two tooth shapes.

In the above embodiments in which the adjacent orientation tabs 122 are mounted in a circumferentially offset manner, the number of the sickle tooth sections 122b on the outer periphery of the orientation tab 122 is substantially preferably 4-6 sections, although a greater or lesser number is possible. The fewer the number of the sickle tooth sections 122b, the fewer functions the orientation piece 122 can realize by rotating for one circle, at this time, the defect can be compensated by the staggered installation of more orientation pieces 122, but the installation difficulty of the orientation piece 122 is increased; while the greater the number of sickle tooth sections 122b, the greater the difficulty in manufacturing the orientation tab 122.

In actual operation, the rotation speed of each paving rake 12 can be regulated and controlled, and according to the movement direction of the paving slabs, among the paving rakes 12, the paving rake 12 firstly contacted with the shavings can be slowest, and the paving rake 12 finally contacted with the shavings can be fastest, so that the shavings on the paving rakes 12 can be paved almost simultaneously.

With continued reference to fig. 2, and with reference to fig. 10, a bulk material rake group 3 may be further disposed above the paving rake group 1, including a bulk material rake frame 31 and a plurality of bulk material rakes 32, where each bulk material rake 32 may include a bulk material rake roller 321 and a plurality of needle rollers 322 installed on an outer wall of the bulk material rake roller 321, and by using the action of each bulk material rake 32, the incoming material of the blanking rake group 4 may be better spread, so that smooth blanking of the paving rake group 1 is facilitated.

Specifically, the number of the bulk material rakes 32 may be consistent with the paving rake 12, and the distance between two adjacent bulk material rakes 32 (the distance between two rolling pins 322 when the rolling pins 322 of the two bulk material rakes 32 are opposite) may be greater than the thickness of the shavings, and the axial gap between two rolling pins 322 of the same bulk material rake 32 may be greater than the width of the shavings, and the length may also be greater than the width of the shavings, so as to facilitate the passage of the shavings.

To accommodate the three types of paving rake 12 arrangements described above, the individual rake 32 can also be divided into three types, from upstream to downstream: the number of the most upstream type of bulk material rakes 32 can be the same as the number of the most upstream type of paving rakes 12, and the bulk material rakes are arranged in a one-to-one correspondence manner; the number of the most downstream type of bulk material rakes 32 can be the same as the number of the most downstream type of paving rakes 12, and the bulk material rakes are arranged in a one-to-one correspondence manner; the number of the intermediate bulk material rakes 32 can be the same as the number of the intermediate paving rakes 12 and are arranged in a one-to-one correspondence; and the distance between two adjacent bulk material rakes 32 of two adjacent bulk material rakes 32 gradually increases from upstream to downstream. The arrangement is more beneficial to grading blanking of the shavings so as to improve the smoothness of blanking as much as possible.

The paving rake 1 referred to in the above description is mainly a longitudinal paving rake with the view of fig. 3, and the distance between two adjacent orientation pieces 121 of the downstream paving rake 12 may be larger than the distance between two adjacent orientation pieces 121 of the upstream paving rake 12 so as to adapt to the arrangement form of the bulk material rake 3 from upstream to downstream. However, when the above-described paving rake 1 is used as the transverse paving rake 6, the longitudinal paving rake cannot be directly mounted and used by rotating the longitudinal paving rake ninety degrees.

Therefore, when the rake assembly 6 is used as the transverse paving rake assembly, the structure of the paving rake 12 needs to be changed, and referring specifically to fig. 20-22, fig. 20 is a schematic structural diagram of an embodiment of the transverse paving rake assembly provided by the present invention, fig. 21 is a top view of fig. 19, and fig. 22 is a connecting structure diagram of two adjacent paving rakes in the transverse paving rake assembly.

As shown in fig. 20 to 22, different from the arrangement mode of different intervals between two adjacent directional plates 122 of adjacent paving rake 12 when being used as a longitudinal paving rake group, when being used as a transverse paving rake group 6, the interval between two adjacent directional plates 122 of each paving rake 12 gradually changes (increases or decreases) along the extending direction of the paving rake roller 121; or, along the extending direction of the paving rake roller 121, every D directional plates 122 of each paving rake 12 are of one type, in the same type, the distances between two adjacent directional plates 122 are the same, and the distances between two adjacent directional plates 122 of each type of directional plates 122 gradually change (increase or decrease) along the extending direction of the paving rake roller 121 so as to adapt to the grading screening of the shavings by the upper bulk material rake group 6, and further, grading blanking can be performed longitudinally, so that blocking can be avoided to a greater extent.

Here, the embodiment of the present invention does not limit whether the distance between the adjacent two orientation pieces 122 of each paving rake 12 along the extending direction of the paving rake roller 121 is gradually increased or gradually decreased, and is specifically related to the arrangement form of the upper blanking member (mainly, the bulk rake group 3); taking gradual increase as an example, the embodiment of the present invention also does not limit the increasing amplitude of the spacing between two adjacent orientation pieces 122, which may be equal increase, i.e. the next spacing is increased by a specific value compared with the previous spacing, or equal increase, i.e. the ratio of the next spacing to the previous spacing is a specific value, or may be in other irregular increasing manners.

For convenience of description, the extending direction of the paving rake roller 121 of the transverse paving rake group 6 may be replaced with the upstream-to-downstream direction during the slab running process. In one particular embodiment, as shown in fig. 21, the orientation tabs 122 of each rake 12 may be divided into three categories from upstream to downstream, the spacing between adjacent orientation tabs 122 of the most upstream category may be 24-28mm, the spacing between adjacent orientation tabs 122 of the most downstream category may be 59-63mm, and the spacing between adjacent orientation tabs 122 of the middle category may be 38-42mm.

It should be understood that the above description about the classification of the orientation pieces 122 of the paving rake roller 12 and the spacing between two adjacent orientation pieces 122 in each category is only a preferred embodiment of the present invention, and is not intended to represent a limitation on the implementation range of the transverse paving rake set 6 provided by the present invention; under the condition of meeting the use requirement, the orientation pieces 122 of the paving rake roller 12 can be divided into more types or fewer types, and the interval between the adjacent orientation pieces 122 in each type can be reset.

For the transverse paving rake group 6, in the rotation process of the paving rake group 12, besides the material (shavings) can be fed between two adjacent orientation pieces 122, the shavings can be stirred by the rotated orientation pieces 122, and the shavings can move to the lower adjacent paving rake 12, so that the shavings are easily gathered at the lowest paving rake 12, and the uniformity of the transverse paving thickness is further affected. With the view of fig. 20, as in the prior art, material accumulation tends to occur at the leftmost side, resulting in a paving result that is thick laterally left and thin laterally right.

In this regard, with reference to fig. 20, the embodiment of the present invention adopts a scheme for adjusting the rotation speed, the rotation speed of the upper-stage paving rake 12 may be greater than the rotation speed of the adjacent lower-stage paving rake 12 in the transverse direction, that is, from the upper stage to the lower stage, the rotation speed (angular velocity) of each paving rake 12 may be slower and slower, it may be understood that, on the premise that the smaller the angular velocity of each paving rake 12 is, the smaller the size of the orientation piece 122 is consistent, the smaller the downward-stage poking force and poking distance generated by the orientation piece 122 of the corresponding paving rake 12 on the shavings is, so that the aggregation of the shavings to the lower-stage paving rake can be reduced, and the uniformity of the transverse paving thickness is more beneficial to be ensured.

In addition, the rotation direction of the lowest paving rake 12 can be set to be opposite to the rotation direction of other paving rakes 12, so that the materials stirred by the upper paving rake 12 can be stirred reversely, the materials can be prevented from being separated from the paving range of the transverse paving rake group 6 at the lowest paving rake 12, and the loss of the materials can be reduced. Meanwhile, the reverse stirring can stir the incoming materials of the upper-level paving rake 12 to the transverse middle position, and the aggregation of the materials at the lowest-level paving rake can be avoided to a certain extent, so that the effect of uniform paving thickness is achieved.

Specifically, a driving member such as a driving motor may be provided for each of the paving rakes 12, so that the rotation speed and the rotation direction of each of the paving rakes 12 may be controlled by adjusting the gear and the rotation direction of the driving member; alternatively, only one or several driving members may be provided, and then the rotation speed and rotation direction of each paving rake 12 may be adjusted by a reduction mechanism such as a parallel shaft gear engaged with each other, and the structure of the reduction mechanism is not described in detail herein since it is a common component in the prior art.

Further, the radial dimension of the orientation plate 122 of the lowest stage of the paving rake 12 may also be adjusted so that its radial dimension may be greater than the orientation plate 122 of the other paving rakes 12. In this way, the outer edge of the orientation piece 122 of the lowest-level paving rake 12 can have a larger linear velocity relative to the adjacent paving rake 122, so as to improve the reverse poking effect of the lowest-level paving rake 12, and reduce the aggregation of materials at the lowest-level paving rake 12 to a greater extent, and the phenomenon of uneven transverse paving thickness caused by the aggregation. The specific dimensions of the orientation piece 122 of the lowest stage rake 12 and the radial dimension increase relative to the orientation piece 122 of each other rake 12 are not limited, and can be determined by one skilled in the art based on the relevant simulation calculations when the present invention is specifically implemented.

Referring to fig. 11-15, fig. 11 is a connection structure diagram of the lifting mechanism and the paving rake, fig. 12 is a partial view of fig. 11 from a side view, fig. 13 is a connection structure diagram of the movable connecting rod, the first lifting lug and the driving member, fig. 14 is a structure diagram of the guide assembly, and fig. 15 is a top view of fig. 14.

As shown in fig. 11 and 12, the paving machine provided by the invention further comprises a lifting mechanism for adjusting the height of the paving rake group 1, wherein the paving rake group 1 comprises a paving rake frame 11 and a plurality of paving rakes 12 arranged on the paving rake frame 11, the lifting mechanism comprises a plurality of lifting units 2, each lifting unit 2 is installed on the paving rake frame 11 at intervals along the circumferential direction, and each lifting unit 2 comprises a lifting assembly 21 and a movable connecting rod 22.

The lifting assembly 21 is mounted on a frame of an upper part of the paving rake 1, which upper part can be the bulk material rake 3 for a paving machine provided with the bulk material rake 3, correspondingly, the lifting assembly 21 can be mounted on the bulk material rake frame 31, and for a paving machine not provided with the bulk material rake 3, which upper part can be the transport part 52, correspondingly, the lifting assembly 21 can be mounted on the frame of the transport part 52; the lifting assembly 21 comprises a telescopic part 212a, the telescopic part 212a can vertically displace, one end of the movable connecting rod 22 is hinged with the telescopic part 212a, and the other end is hinged with the paving rake frame 11. The term "vertical" refers to a direction perpendicular to a horizontal plane, i.e., an up-down direction.

With the structure, the lifting assemblies 21 of the lifting units 2 are provided with the telescopic parts 212a, the telescopic parts 212a can vertically displace, and the movable connecting rods 22 can drive the paving rake rack 11 to lift, so that the distance between the paving rake group 1 and the slabs (not shown in the figure) can be adjusted to adapt to the production of slabs with different thicknesses; moreover, through the lifting mechanism, the distance between the paving rake 1 and the plate blank can be controlled to be minimum, so that materials (shavings and the like) are thrown out of the paving rake 1 and reach the surface of the plate blank through the minimum movement distance, the influence of wind resistance, gravity and other factors on the spreading of the materials is reduced to a large extent, smoothness of the materials during paving is guaranteed, and the strength of the produced shaving board can be guaranteed.

More importantly, the lifting component 21 is not directly connected with the paving rake frame 11, but is connected through the movable connecting rod 22, and the movable connecting rod 22 with two hinged ends can absorb the installation errors of the lifting mechanism, the paving rake group 1 and other equipment so as to ensure the leveling effect; in actual operation, the paving rake frame 11 can be adjusted to be obliquely arranged by the telescopic part 212a which performs linear motion along the vertical direction through the hinged movable connecting rod 22, so as to meet the blanking requirements of different parts of the slab.

It will be appreciated that if the aforementioned telescopic portions 212a are directly fixedly mounted or hinged to the rake frame 11, the distance between two adjacent telescopic portions 212a is already determined, so that the rake frame 11 cannot be tilted. The scheme of switching through the movable connecting rods 22 with hinged two ends can well solve the problems, so that the paving rake frame 11 is obliquely arranged under the condition that the distance between two adjacent telescopic parts 212a is unchanged; even in the leveling process, the scheme can prevent leveling clamping stagnation caused by installation errors, and is more beneficial to ensuring the leveling effect.

For the paving rake frame 11 which is obliquely arranged, the oblique direction of the paving rake frame 11 is related to the paving direction of the slab, if the running direction of the slab is the front-back direction and the downstream of the slab running is the front, the paving rake frame 11 can be gradually inclined upwards from back to front so as to be suitable for the thickness of the material which is gradually increased on the slab in the running process. In this embodiment of the present invention, the inclination angle of the paving rake frame 11 is not limited, and in practice, a person skilled in the art may set parameters such as the running speed and thickness of the slab.

The lifting assembly 21 may include a driving member 211 and a transmission member 212, where the driving member 211 may be a motor, a driving shaft 211a of the driving member may be connected to an input shaft of the transmission member 212, and an output portion of the transmission member 212 is the telescopic portion 212a, so as to output a lifting force to the paving rake frame 11.

In the first embodiment, the transmission member 212 may be a combination structure of a worm gear and a rack and pinion, referring to fig. 12, the driving member 211 is mounted on the rake frame 31, a driving shaft 211a thereof may extend substantially horizontally, the worm gear may be coaxially connected to the driving shaft 211a, the worm gear may be meshed with the worm gear to convert the rotation in the horizontal direction into the rotation in the vertical direction, and then the rotation may be changed into the horizontal direction again by the cooperation of one or more pairs of helical gears and spur gears, and finally the lifting force is outputted through the rack; a sleeve 212b may be provided around the outer circumference of the rack to protect it.

In the above structure, the rack is the telescopic part 212a, and through the engaged worm gear, helical gear, straight gear and final gear-rack transmission, not only the direction of the rotation force output by the driving shaft 211a can be changed, but also a better deceleration effect can be achieved, so that the lifting of the paving rake frame 11 can be controlled more accurately.

In the second embodiment, the transmission member 212 may be a combination structure of a worm gear and a screw, the structure and arrangement of the driving member 211 may be similar to those of the first embodiment, the worm may be coaxially connected to the driving shaft 211a, the worm gear may be meshed with the worm to change the rotation direction, the polish rod section of the screw may be fixed to the worm gear, so that the screw may rotate synchronously with the worm gear, the screw nut may be sleeved on the thread section of the screw, and the screw nut may output a lifting force when the screw rotates.

In this embodiment, the screw nut may be fixed to the worm wheel, or an internal thread may be provided on the inner wall of the worm wheel to serve as the screw nut by using the worm wheel, and then the screw thread section of the screw is screwed to the screw nut, so that the screw can output the lifting force to the outside through screw engagement when the worm wheel rotates.

In the third embodiment, the driving member 211 may be a torque motor, which has the characteristics of low rotation speed, high torque, and fast response, etc., and the motor of this type may not be provided with an excessive reduction structure, the driving member 212 may be directly a gear-rack driving structure, the gear may be fixed to the driving shaft 211a, and the rack may be engaged with the gear and output the lifting force to the outside.

The above three embodiments can all achieve the purpose of adjusting the height of the paving rake frame 11, and when in specific implementation, a person skilled in the art can decide according to actual needs. It should be understood that the above three embodiments are merely exemplary descriptions of the embodiments of the present invention, and are not intended to limit the scope of the paving machine of the present invention, and that other structures of the lifting assembly 21 may be adopted under the condition of satisfying the functions; for example, the driving member 211 may be vertically arranged, and thus the lifting motion may be directly output through a screw structure, or the lifting assembly 21 may also adopt a member capable of directly outputting linear displacement, such as a cylinder or an oil cylinder, and thus the lifting force is output by a piston rod of the cylinder or the oil cylinder.

Further, a controller and a monitoring part may be further provided, and the monitoring part may be a thickness scanner or the like, which may be provided on a moving track of the slab to monitor the thickness of the slab. The controller can be in signal connection with the monitoring component and the driving piece 211 of each lifting unit 2, and can receive thickness information fed back by the monitoring component and automatically adjust the height of the paving rake frame 11 according to the thickness information. In addition, a control button for controlling the start and stop of the driving member 211 may be provided, so that the start and stop of the driving member 211 can be manually controlled through the control button, and the height of the paving rake frame 11 can be manually adjusted.

The connection structure between the telescopic portion 212a and the upper end of the movable link 22 may be determined according to the movement form of the telescopic portion 212 a.

If the telescoping portion 212a is displaced only vertically, such as the rack described above, the telescoping portion 212a may be directly hinged to the movable link 22. Alternatively, as shown in fig. 3, the telescopic portion 212a may be fixed to the first lifting lug 24 by screwing, welding, or the like, and then hinged to the movable link 22 through the first lifting lug 24.

If the telescopic portion 212a is further rotated around its own axis while vertically displacing, for example, the aforementioned screw rod, the telescopic portion 212a can only be hinged to the movable link 22 through the first lifting lug 24, so as to avoid torsion caused by the hinge of the telescopic portion 212a directly to the movable link 22. At this time, the first lifting lug 24 needs to be capable of rotating relative to the movable link 22, and the connection structure between the first lifting lug 24 and the telescopic portion 212a may be referred to as follows: the upper end surface of the first lifting lug 24 can be provided with a mounting groove, the telescopic part 212a can be inserted into the mounting groove, the outer wall surface of the end part of the telescopic part 212a positioned in the mounting groove can be provided with a baffle plate which extends outwards along the radial direction, then the notch of the mounting groove can be shielded by a cover plate and the like, and the baffle plate and the cover plate can be propped against each other along the axial direction so as to prevent the first lifting lug 24 from sliding off the telescopic part 212 a; it will be appreciated that the above description of the connection structure of the first lifting lug 24 and the telescopic portion 212a is merely an exemplary description, and other structures between the first lifting lug 24 and the telescopic portion 212a may be fully adopted in practical applications, as long as the above effects can be achieved.

The lower extreme of movable connecting rod 22 can be directly with the frame 11 of spreading machine, also can be through second lug 25 with the frame 11 of spreading machine articulated, as shown in fig. 2, the cross-section of second lug 25 can be the shape of falling T, and the vertical part of this shape of falling T is articulated portion, can link to each other with movable connecting rod 22, and the horizontal part is fixed part, can link to each other with frame 11 of spreading machine.

As also shown in fig. 11 and 12, the lifting unit 2 may further include a guide assembly 23, where the guide assembly 23 may include a first guide 231 and a second guide 232, where the first guide 231 may be disposed vertically, and the second guide 232 may be fixed to the paving rake frame 11; and the second guide 232 may be slidably engaged with the first guide 231 in the up-down direction to guide the elevation of the paving rake 1.

One of the first guide 231 and the second guide 232 may be provided with a sliding rail 231a, the other one may be provided with a sliding groove 232a, and the sliding rail 231a may be inserted into the sliding groove 232a and may slide up and down along the sliding groove 232 a; the number of the sliding rails 231a and the sliding grooves 232a is not limited, and may be one or more, and when the number of the sliding rails 231a and the sliding grooves 232a is more than one, the sliding rails 231a and the sliding grooves 232a may be in one-to-one correspondence. Alternatively, both guide members may be provided with a slide rail 231a and a slide groove 232a, and the slide rail 231a of one guide member may be slidably engaged with the slide groove 232a of the other guide member.

Specifically, as shown in fig. 14 and 15, the slide rail 231a may be provided to the first guide 231, and the slide groove 232a may be provided to the second guide 232. The second guide member 232 may also be provided with a bar-shaped hole 232b, and a connecting member in the form of a peripheral screw, bolt, or the like may pass through the bar-shaped hole 232b to fix the second guide member 232 to the paving rake frame 11, and the mounting position of the second guide member 232 on the paving rake frame 11 may be adjusted by adjusting the position of the connecting member in the bar-shaped hole 232 b.

The paving rake frame 11 can be square, and in order to ensure stable structure, the number of the lifting units 2 can be four, and the four lifting units 2 can be arranged at four corners of the paving rake frame 11 in a one-to-one correspondence manner; and two adjacent lifting units 2 along the circumferential direction can share one driving piece 211 in the four lifting units 2 so as to reduce the arrangement number of the driving pieces 211, and of course, the driving pieces 211 can also be configured for each lifting unit 2 independently so as to improve the adjustment flexibility. It will be appreciated that the number of lifting units 2 is not limited to four, but may be more, as may be desired.

Referring to fig. 16-19, fig. 16 is a schematic view of a structure of a blanking rake, fig. 17 is a schematic view of a mounting structure of a blanking piece, fig. 18 is a schematic view of a mounting structure of a following blanking piece adjacent to the blanking piece in fig. 17, and fig. 19 is a schematic view of a mounting structure of a following blanking piece adjacent to the blanking piece in fig. 18.

As shown in fig. 2, and in conjunction with fig. 16 and 17, the outlet end (right end in the drawing) of the paving bin 5 is provided with a blanking rake group 4, which includes a plurality of blanking rakes 41, the blanking rake 41 includes a blanking rake roller 411, the blanking rake roller 411 is provided with a plurality of blanking pieces 412 at intervals along the axial direction, each blanking piece 412 includes a plurality of blades 412a arranged at intervals along the circumferential direction, and along with the rotation of the blanking rake roller 411, each blade 412a can stir and throw incoming materials (hereinafter referred to as shavings) so as to discharge the shavings to a bulk material rake or a paving rake below.

Unlike the prior art, the blade 412a includes a handle 412a-1 and a head 412a-2, the head 412a-2 is mounted at the outer end of the handle 412a-1 and can incline towards the rotation direction relative to the handle 412a-1, that is, the head 412a-2 is bent towards the rotation direction relative to the handle 412a-1, with the view of fig. 2, and with reference to fig. 3, shavings can enter the working range of the blanking rake set 4 from the left, the blanking sheet 412 is rotated clockwise, and with the bending design, the head 412a-2 of the blanking sheet 412 can better stir shavings from bottom to top to lift the shavings upwards and smoothly throw the shavings, so that the stacking density of the shavings on the conveying belt can be reduced, the subsequent throwing of the shavings is more favorable, and the blocking situation can be avoided to a greater extent.

The blanking rake of the form has strong throwing capability on shavings, is particularly suitable for the production of oriented strand boards with larger thickness, and can be also suitable for the production of other forms of strand boards or other fields with blanking requirements.

The blanking piece 412 may further include a ring-shaped substrate 412b, the inner end of the handle 412a-1 may be fixed to the substrate 412b, the blanking piece 412 may be mounted to the blanking rake roller 411 by coating the substrate 412b, and an anti-rotation structure may be disposed between the inner wall surface of the substrate 412b and the outer wall surface of the blanking rake roller 411, so as to ensure that the blanking piece 412 and the blanking rake roller 411 can rotate synchronously.

In one embodiment, the cross-section of the mating segment of the blanking rake roller 411 and the blanking sheet 412 may be configured to be non-circular, such as oval, square, etc., and accordingly, the inner hole of the substrate 412b may be configured to be a non-circular hole, such as oval, square, etc., that mates with the blanking rake roller 411 so that no relative rotation occurs between the blanking sheet 412 and the substrate blanking rake roller 411 when the two are in socket engagement.

In another embodiment, as shown in the drawings of the present invention, one of the inner wall surface of the substrate 412b and the outer wall surface of the blanking rake roller 411 may be provided with a protruding key 412b-1 extending in the axial direction, and the other may be provided with a key slot 411a extending in the axial direction, and in the assembled state, the protruding key 412b-1 may be inserted into the key slot 411a, so that the synchronous rotation of the blanking plate 412 and the blanking rake roller 411 can be ensured.

In this embodiment, the protruding keys 412b-1 may be specifically disposed on the substrate 412b, the key slots 411a may be specifically disposed on the blanking rake roller 411, and the number of the protruding keys may be one or more, and when the number of the protruding keys is more than one, the mounting positions of the protruding keys need to be matched, so that each protruding key 412b-1 can be plugged into the corresponding key slot 411a in a one-to-one correspondence.

In comparison, the above two embodiments can effectively ensure the synchronous rotation of the blanking sheet 412 and the blanking rake roller 411, and in practice, a person skilled in the art can choose according to actual needs.

With continued reference to fig. 17, the outer end of the head 412a-2 may be pointed to further enhance the striking and throwing effect of the blade 412a on the shavings.

The central axis of the handle 412a-1 may be perpendicular to the central axis of the blanking rake roller 411, i.e., the handle 412a-1 may be disposed in a plane perpendicular to the central axis of the blanking rake roller 411, and in this plane, the handle 412a-1 may be disposed at an angle with the radial direction of the blanking rake roller 411, as shown in fig. 17, 18 and 19, and the handle 412a-1 may also be gradually inclined from inside to outside toward the rotation direction. Based on this, blade 412a formed by combining shank 412a-1 with head 412a-2 may be entirely curved in a knife shape, i.e., the entire blade 412a may be gradually inclined from inside to outside toward the rotational direction, but it is still necessary to ensure that head 412a-2 and shank 412a-1 exhibit different inclinations with respect to the radial direction to form bent head 412a-2.

In a particular arrangement, as also shown in FIG. 17, handle 412a-1 can include opposing first and second handle sides 412a-1a and 412a-1b, and head 412a-2 can include opposing first and second head sides 412a-2a and 412a-2b, respectively, in the rotational direction; the line along which the first handle edge 412a-1a is located may be a tangent to the outer edge of the substrate 412b, and the first head edge 412a-2a may be connected to the first handle edge 412a-1a and inclined with respect to the first handle edge 412a-1a toward the rotation direction, and may have an obtuse angle therebetween, so that the first head edge 412a-2a has a tendency to integrally extend outward; the second head edge 412a-2b is joined to the first head edge 412a-2a and may be at an acute angle therebetween to form the tip structure described above; in the rotational direction, the second head edge 412a-2b and the second handle edge 412a-1b may be offset to form a step, so as to ensure that the head portion 412a-2 forms the aforementioned bending structure with respect to the handle portion 412 a-1. In this embodiment, the first handle edge 412a-1a, the second handle edge 412a-1b, the first head edge 412a-2a, and the second head edge 412a-2b may all be straight edges to facilitate processing.

It will be appreciated that the number of blades 412a of the blanking sheet 412 is not too large, and that it is difficult to process too many blades 412a, and that the number of blades 412a of the blanking sheet 412 is not too small, and that too few blades 412a may not provide a good effect of throwing shavings. In the embodiment of the present invention, the number of the blades 412a is preferably three, and the three blades 412a may be equally spaced in the circumferential direction; of course, the number of blades 412a may be other values, such as four.

In this form of blanking sheet 412, when one blade 412a is in contact with the shavings during operation, the next blade 412a is in contact with the shavings again requiring the blanking rake roller 411 to rotate 120 degrees, thus requiring a greater rotational speed of the blanking rake roller 411 if the blade 412a is to be guaranteed to be nearly continuously and uninterruptedly acting on the shavings on the conveyor belt.

In view of this, the present invention provides a scheme in which each blanking sheet 412 is installed in a staggered manner in the circumferential direction along the extending direction (i.e., the front-rear direction) of the blanking rake roller 411, so as to reduce the requirement for high rotation speed of the blanking rake roller 411. Specifically, along the extending direction of the blanking rake roller 411, the adjacent N blanking sheets 412 may be grouped into a group, and in each group, the following blanking sheet 412 may rotate in the same circumferential direction (all clockwise or counterclockwise) with respect to the preceding adjacent blanking sheet 412And (5) degree installation.

Taking n=3 as an example, reference may be made to fig. 17, 18 and 19, wherein fig. 18 is a rear adjacent blanking sheet 412 of fig. 17, fig. 19 is a rear adjacent blanking sheet 412 of fig. 18, fig. 17 to 19 just show a set of adjacent blanking sheets 412, each blade 412a of the blanking sheets 412 shown in fig. 18 is mounted corresponding to each blade 412a of the blanking sheets 412 shown in fig. 17 being rotated 40 degrees clockwise, and each blade 412a of the blanking sheets 412 shown in fig. 19 is mounted corresponding to each blade 412a of the blanking sheets 412 shown in fig. 18 being rotated 40 degrees clockwise.

Along the extending direction of the blanking rake roller 411, each blanking sheet 412 may be numbered: 1. 2, 3, … (3n+1), (3n+2), (3n+3) …, wherein n is a natural number greater than 0; in the above-described mounting manner, the 1 st lower sheet 412 may have the same mounting angle as the (3n+1) th lower sheet 412, and for convenience of description, the 2 nd lower sheet 412 may have the same mounting angle as the (3n+2) th lower sheet 412, the 3 rd lower sheet 412 may have the same mounting angle as the (3n+3) th lower sheet 412, and the 3 rd lower sheet 412 may be referred to as three kinds of lower sheets; in the rotation process of the blanking rake roller 411, after the blades 412a of one type of blanking sheets are contacted with the shavings, the blades 412a of the second type of blanking sheets can rotate to the positions of the blades 412a of the previous type of blanking sheets for supplementing the shavings, so that continuous action is performed on the shavings, and similarly, after the blades 412a of the second type of blanking sheets are contacted with the shavings, the blades 412a of the third type of blanking sheets can supplement the positions only by rotating for 40 degrees, that is, the blades 412a act on the shavings when the blanking rake roller 411 rotates for 40 degrees, compared with the scheme of the same angle installation of each blanking sheet 412, the rotation speed requirement of the blanking rake roller 411 can be reduced by 3 times, and further energy consumption can be greatly reduced.

Meanwhile, as each blanking piece 412 of each group is arranged in a staggered manner along the circumferential direction, the outer circumference of the blanking harrow roller 411 is equivalent to 9 blades 412a seen along the axial direction, and in the process of rotating the blanking harrow roller 411 for one circle, the 9 blades 412a can be in contact with the shavings, so that the continuous action of the blades 412a on the shavings can be effectively ensured; and the linear velocity generated by 9 blades 412a can be superimposed, and the linear velocity that can be generated by the blanking piece 412 can be greatly increased.

The above-mentioned N value should not be too large, and too large N can make the dislocation installation angle of two adjacent blanking pieces 412 smaller, on the one hand, the installation is comparatively difficult, on the other hand, also can lead to blanking harrow roller 411 circumference existing blade 412a too dense, and the angle between two adjacent blades 412a in the circumference of two adjacent blanking pieces 412 is smaller, and the long-strip shavings easily block between these two blades 412a, then cause the condition of card material, wrapping up in the clamp, be unfavorable for the unloading. Experiments prove that in the embodiment of the invention, N is preferably equal to 3 or 4, that is, the angle between two adjacent blanking sheets 412 can be kept at 30 degrees or 40 degrees for staggered installation, so that the rotating speed requirement on the blanking rake roller 411 can be greatly reduced, the blanking speed is not influenced, meanwhile, jamming is not easy to occur, and the production continuity and efficiency can be ensured.

In practical application, a driving member in the form of a variable-frequency gear motor or the like can provide a driving force for the blanking rake roller 411 to adjust the rotation speed of the blanking rake roller 411, and further adjust the linear speed provided by the blanking sheet 412 to adapt to the speed of conveying shavings by the conveying belt, and the matching relationship between the two speeds can be adjusted according to practical situations, which is not limited herein.

A second spacer 413 may be further disposed between the two adjacent blanking pieces 412, and two ends of the second spacer 413 may respectively abut against the two adjacent blanking pieces 412 to define an axial installation distance between the two adjacent blanking pieces 412, where the axial installation distance is related to the size of the raw wood shavings used for production.

During production, the axial mounting distance between the two blanking panels 412 should be greater than the average width of the type i shavings produced to avoid to a large extent that the shavings get stuck between the two blanking panels 412. In particular, for the embodiment of the present invention, the axial length of the second spacer 413 may be set to 25-30mm, preferably 28mm, i.e. the interval between the two lower sheets 412 is controlled to be 25-30 mm; the wall thickness of the second spacer 413 may then be less than or equal to the wall thickness of the substrate 412b so that there is a larger space in the radial direction to accommodate the shavings.

Referring to fig. 2 again, when applied to a paving machine, the blanking rake group 4 in the paving bin 5 may generally include 6 to 7 blanking rakes 41, the central axes of the blanking rake rollers 411 of each blanking rake 41 may be located on the same mounting surface, and the central axes of the blanking rake rollers 411 may be parallel to each other and arranged at equal intervals; from top to bottom, the installation face can incline to the place ahead of feed direction (left to right direction in the drawing) gradually, and specifically, the contained angle of this installation face and horizontal plane can be between 45-47 degrees to the thrust to blanking harrow roller 411 when the successive decrement wood shavings motion from bottom to top, can prevent the bending deformation of blanking harrow roller 411 to a great extent, be favorable to prolonging the life of blanking harrow 41.

The conventional paving machine generally only comprises 3 paving heads, namely a longitudinal paving head, a transverse paving head and a longitudinal paving head, if the thickness of the produced shaving board is larger, the thickness of a paving unit formed by each paving head on the board blank is also larger, the distance between the corresponding paving head and the board blank is larger, when the paving heads are used for paving and discharging, the windage resistance and the gravity effect of the shaving are obvious, the smoothness of the shaving paving can be influenced, and the quality of the produced shaving board is further influenced.

Therefore, through research and study, the embodiment of the invention provides a paving machine comprising 7 paving heads, as shown in fig. 1, along the running direction of a slab, the paving heads can comprise a first longitudinal paving head 1#, a first transverse paving head 2#, a second longitudinal paving head 3#, a fine paving head 4#, a third longitudinal paving head 5#, a second transverse paving head 6# and a fourth longitudinal paving head 7#, 7 paving units can be further formed, the thickness corresponding to each paving unit can be greatly reduced, the distance between a paving rake group 1 of each paving head and the slab can be reduced, the influence of wind resistance and gravity when the shavings are paved is smaller, the smoothness of the shaving board is more beneficial to ensuring, and the quality of the shaving board is improved.

Moreover, because the thickness of each layer of unit of mating formation is less, still be convenient for carry out the control of refining to the unit of mating formation of each layer, according to different customer's requirement, like when bearing the weight of the requirement lower, the thickness of mating formation of each layer can be unanimous, like when bearing the weight of the requirement higher again, the thickness of the unit of mating formation of top layer and bottom can be great, towards the intermediate thickness more less, this kind of fine regulation and control mode can conveniently follow and pave raw materials and hot pressing cycle on reduction in production cost.

The paving machine can be used for producing oriented strand boards, especially oriented strand boards for container floors, wherein the container floors have high mechanical strength requirement and impact resistance, and the former veneers are made of raw wood or all-wood structures with high density, so that the cost is high. The shaving board produced by the paving machine provided by the invention has more paving layers, the combination between paving units formed by each layer can simulate and approximate to the internal hierarchical structure of the plywood, and the transverse paving layers and the longitudinal paving layers are obvious in the cross section of the shaving board, so that the quality of the shaving board can be greatly improved, the shaving board is easier to be accepted by markets and clients, and the production cost can be greatly reduced compared with that of the plywood made of raw wood or whole wood.

Furthermore, the combination between the paving units can reduce the influence of pressure curve change, chemical change of adhesive, physical change of moisture and the like on the board blank in the hot pressing process, and can reduce the influence of natural phenomena such as heat dissipation, moisture absorption and the like in the storage process on the finished product shaving board. That is, the more the paving units are, the less the hot-pressed finished shaving board is prone to edge warping and bending, and compared with the prior art, the quality of the shaving board can be greatly improved.

Of course, the number of paving heads cannot be increased without limitation, and researches show that a complete slab needs to be paved within 10 minutes, otherwise, the slab absorbs moisture contained in the adhesive into wood fibers, the adhesive is inactive, the adhesion force of the wood shavings surface is reduced, the slab with certain strength cannot be formed in the subsequent pre-pressing process, the processes of cross section segmentation, hot press forming and the like can be greatly influenced, and the slab is loose when serious, and cannot be finished in the next process.

Therefore, in the embodiment of the invention, the number of the paving heads is set to 7 to take advantages of all aspects into consideration, in a specific scheme, the total length of the paving machine is about 66.74 meters, the paving speed is set to 7 meters/min, and the paving of a complete plate blank can be completed in about 9 minutes. The improvement of the paving rake 1, the bulk material rake 3, the blanking rake 4 and the like is combined, the formed slabs are orderly arranged longitudinally and transversely, the proportion of longitudinal shavings (the proportion of shavings arranged longitudinally in the longitudinal paving unit) can reach 80%, the proportion of transverse shavings (the proportion of shavings arranged transversely in the transverse paving unit) can reach 70%, the orientation effect is more obvious, and the quality and strength of the shaving board are greatly improved.

The order of the seven paving heads is fixed, but the specific choice of which paving heads are put into use can be adjusted according to market changes and customer requirements. In general, the first longitudinal paving head 1# (or the second longitudinal paving head 3#) and the fourth longitudinal paving head 7# (or the third longitudinal paving head 5#) must be put into use, that is, two longitudinal paving heads must be used, and other paving heads can be selected for preference, so that cost can be saved and the opportunity of emergency maintenance equipment can be reduced.

In the above description, mention is made of: in the transverse paving process, materials are possibly accumulated at the position of the paving rake 12 at the lowest stage, and further, the transverse paving thickness is uneven. Therefore, the embodiment of the invention improves the structure of the transverse pavement rake 6, but the transverse stirring trend of the shavings from the upper stage to the lower stage cannot be changed, so that the uneven transverse pavement thickness is still possibly caused.

In order to better solve the problem, once the transverse paving heads are needed to be used, the first transverse paving head 2# and the second transverse paving head 6# are needed to be started at the same time, the directions from the upper stage to the lower stage of the transverse paving rake groups 6 in the two transverse paving heads can be opposite, and the reference is made to fig. 20, namely, the directions from the upper stage to the lower stage of one transverse paving rake group 6 are from right to left, the paving result generated by the transverse paving rake groups 6 is thick on the left side and thin on the right side, the paving result generated by the upper stage to the lower stage of the other transverse paving rake group 6 is from left to right, the paving result generated by the transverse paving rake groups 6 is thin on the left side and thick on the right side, and the two transverse paving rake groups 6 can be complemented to balance the uniformity of the thickness from left to right in the transverse paving process to the greatest extent.

It should be understood that the above solution including 7 paving heads is only a preferred embodiment of the present invention, and is not intended to limit the implementation range of the paving machine provided by the present invention, and other numbers of paving heads, for example, 3 or 5, may be adopted in the specific implementation.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. The paving machine comprises a plurality of paving heads, wherein each paving head is provided with a paving rake group (1), each paving rake group (1) comprises a plurality of paving rakes (12), each paving rake (12) comprises a paving rake roller (121) and a plurality of orientation pieces (122) sleeved on the paving rake roller (121), and the paving machine is characterized in that a sawtooth section (122 a) and a sickle tooth section (122 b) are arranged on the periphery of each orientation piece (122), the sawtooth section (122 a) can generate dragging force for shavings for moving between two adjacent orientation pieces (122), and the sickle tooth section (122 b) can generate poking force for shavings for moving adjacent paving rakes (12) and is larger than the poking force;

When the saw tooth section (122 a) can not drag the shavings to a position between the two orientation pieces (122) for blanking, the sickle tooth section (122 b) can stir the shavings to the adjacent paving harrow (12);

the number of the sawtooth sections (122 a) is multiple, each sawtooth section (122 a) is distributed at equal intervals along the circumferential direction, and the sickle tooth sections (122 b) are arranged between two adjacent sawtooth sections (122 a);

-the length of the tooth segment (122 b) is smaller than the tooth segment (122 a), the tooth segment (122 b) comprising at least one tooth, the length of the tooth being greater than the width of the shavings, the length of the tooth segment (122 a) being greater than the length of the shavings;

the orientation tab (122) includes a large tab (122-1) and a small tab (122-2), the large tab (122-1) having a larger diameter than the small tab (122-2); one large piece (122-1) and at least one small piece (122-2) form a small group, and a plurality of small groups of orientation pieces (122) are sequentially arranged along the extending direction of the paving rake roller (121); or, one small piece (122-2) and at least one large piece (122-1) form a small group, and a plurality of small groups of orientation pieces (122) are sequentially arranged along the extending direction of the paving rake roller (121);

one large piece (122-1) and one small piece (122-2) form a small group, a plurality of small groups of orientation pieces (122) are sequentially arranged along the extending direction of the paving rake roller (121), and in each small group, the installation angles of the orientation pieces (122) are consistent;

The tooth shapes of the sickle teeth are the same, the number of the sickle tooth sections (122 b) is E, the adjacent E subgroups are one group along the extending direction of the paving harrow roller (121), in each group, the orientation piece (122) of the rear subgroup rotates along the same direction along the circumference relative to the orientation piece (122) of the front adjacent subgroupDegree installation, wherein e equals 5 or 6,E equals 2 or 3; alternatively, the sickle teeth have two tooth shapes, the sickle tooth sections (122 b) with two tooth shapes are sequentially arranged along the periphery of the orientation piece (122), the number of the sickle tooth sections (122 b) is 2F, adjacent F subgroups are a group along the extending direction of the paving rake roller (121), in each group, the orientation piece (122) of the subgroup at the back rotates relative to the orientation piece (122) of the adjacent subgroup at the front along the same circumferential direction>Degree installation, wherein f is equal to 2 or 3, and f is equal to 3 or 4;

the pavement rake assembly further comprises a lifting mechanism for adjusting the height of the pavement rake assembly (1).

2. The machine of claim 1, wherein said sickle tooth has a first tooth shape, said first tooth shape being a hook shape comprising a hooked edge (122 b-1) capable of toggling shavings and a hooked bottom edge (122 b-2) connected to said hooked edge (122 b-1); or alternatively, the process may be performed,

The sickle tooth is provided with a second tooth shape, the second tooth shape is U-shaped, and comprises groove edges (122 b-3) which are oppositely arranged and can stir shavings and groove bottom edges (122 b-4) which are connected with the two groove edges (122 b-3).

3. The paving machine according to claim 1 or 2, wherein an anti-rotation structure is provided between the inner edge of each of the orientation pieces (122) and the outer wall surface of the paving rake roller (121), and a first spacer (123) is provided between two adjacent orientation pieces (122).

4. A spreading machine according to claim 3, wherein said spreading rake (1) is capable of being a longitudinal spreading rake, and when being said longitudinal spreading rake, the spacing between two adjacent orientation pieces (122) of a downstream one (12) of said adjacent two (12) of said spreading rakes is greater than the spacing between two adjacent orientation pieces (122) of an upstream adjacent one (12); or from upstream to downstream, each C of the paving rakes (12) is one type, in the same type, the distance between two adjacent orientation pieces (122) of each paving rake (12) is the same, and in the two adjacent types, the distance between two adjacent orientation pieces (122) of the downstream type of paving rakes (12) is larger than the distance between two adjacent orientation pieces (122) of the upstream type of paving rakes (12).

5. The machine according to claim 4, characterized in that from upstream to downstream, each of said paving rakes (12) is divided into three categories, the spacing between two adjacent said orientation pieces (122) of the most upstream category of said paving rakes (12) being 24-28mm, the spacing between two adjacent said orientation pieces (122) of the most downstream category of said paving rakes (12) being 59-63mm, the spacing between two adjacent said orientation pieces (122) of the middle category of said paving rakes (12) being 38-42mm.

6. The spreading machine according to claim 5, wherein a bulk material rake group (3) is further arranged above the spreading rake group (1), the bulk material rake group (3) comprises a plurality of bulk material rakes (32), each bulk material rake (32) comprises a bulk material rake roller (321) and a plurality of rolling pins (322) mounted on the outer wall surface of the bulk material rake roller (321), and the distance between two adjacent bulk material rakes (32) is larger than the thickness of wood shavings.

7. The machine according to claim 6, characterized in that said bulk material rakes (32) are the same number as said paving rakes (12) and that from upstream to downstream, each bulk material rake (32) is also divided into three categories;

the number of the bulk cargo rakes (32) at the most upstream is the same as the number of the paving rakes (12) at the most upstream, and the bulk cargo rakes are arranged in a one-to-one correspondence manner; the number of the middle bulk cargo rakes (32) is the same as that of the middle paving rakes (12), and the bulk cargo rakes and the paving rakes are arranged in a one-to-one correspondence manner; the number of the most downstream bulk material rakes (32) is the same as that of the most downstream paving rakes (12), and the bulk material rakes and the paving rakes are arranged in a one-to-one correspondence manner; the distance between two adjacent bulk material rakes (32) of two adjacent bulk material rakes (32) gradually increases from upstream to downstream.

8. The spreading machine according to claim 4, characterized in that the spreading rake (1) is also capable of functioning as a transverse spreading rake (6), and in that, as the transverse spreading rake (6), the spacing between adjacent two orientation pieces (122) of the spreading rake (12) varies gradually along the direction of extension of the spreading rake roller (121); or, along the extending direction of the paving rake roller (121), every D of the orientation pieces (122) of the paving rake (12) are of one type, in the same type, the spacing between every two adjacent orientation pieces (122) of the same type is the same, and the spacing between every two adjacent orientation pieces (122) of each type of orientation pieces (122) is gradually changed along the extending direction of the paving rake roller (121).

9. The machine according to claim 8, characterized in that from upstream to downstream, said orientation blades (122) of said paving rake (12) are divided into three categories, the spacing between two adjacent said orientation blades (122) of the most upstream category being 24-28mm, the spacing between two adjacent said orientation blades (122) of the most downstream category being 59-63mm, the spacing between two adjacent said orientation blades (122) of the middle category being 38-42mm.

10. The machine according to claim 8, characterized in that the rotation speed of the upper stage of the paving rake (12) is greater than the rotation speed of the adjacent lower stage of the paving rake (12) in the transverse direction, and the rotation direction of the lowest stage of the paving rake (12) is opposite to the rotation direction of the other paving rakes (12).

11. The machine of claim 10, wherein the orientation tabs (122) of the lowest stage of the paving rake (12) are larger in radial dimension than the orientation tabs (122) of the other paving rakes (12).

12. The machine according to claim 10, wherein the number of the paving heads is 7, and the paving heads comprise a first longitudinal paving head (1#), a first transverse paving head (2#), a second longitudinal paving head (3#), a fine paving head (4#), a third longitudinal paving head (5#), a second transverse paving head (6#), and a fourth longitudinal paving head (7#) along the running direction of the slab;

the first longitudinal paving head (1#), the second longitudinal paving head (3#), the fine material paving head (4#), the third longitudinal paving head (5#), the fourth longitudinal paving head (7#) are all installed the longitudinal paving rake group, the first transverse paving head (2#), the second transverse paving head (6#) are all installed the transverse paving rake group (6).

13. A spreading machine according to claim 12, characterized in that the direction of the transversal spreading rake (6) of the first transversal spreading head (2 #) from the upper level to the lower level is opposite to the second transversal spreading head (6 #).

14. The machine of claim 12, wherein at least two of said heads are in use.

15. The paving machine according to claim 1, wherein the lifting mechanism comprises a plurality of lifting units (2), each lifting unit (2) is mounted on a paving rake frame (11) at intervals along the circumferential direction, each lifting unit (2) comprises a lifting assembly (21) and a movable connecting rod (22), the lifting assembly (21) is mounted on a frame of an upper part of the paving rake group (1), a telescopic part (212 a) of the lifting assembly (21) can be vertically displaced, one end of the movable connecting rod (22) is hinged with the telescopic part (212 a), and the other end of the movable connecting rod is hinged with the paving rake frame (11).

16. -the machine according to claim 15, characterized in that the lifting unit (2) further comprises a guide assembly (23), the guide assembly (23) comprising a first guide (231) and a second guide (232), the first guide (231) being arranged vertically and the second guide (232) being fixed to the rake frame (11);

the second guide piece (232) is in sliding fit with the first guide piece (231) along the up-down direction so as to guide the lifting of the paving rake group (1).

17. The machine according to claim 16, characterized in that one of said first guide (231) and said second guide (232) is provided with a sliding rail (231 a) and the other is provided with a sliding groove (232 a), said sliding rail (231 a) being inserted in said sliding groove (232 a) and being able to slide inside said sliding groove (232 a).

18. The paver of claim 16, wherein the second guide member (232) is provided with a bar-shaped hole (232 b), an external connecting member can pass through the bar-shaped hole (232 b) to fix the second guide member (232) to the paving rake frame (11), and the mounting position of the second guide member (232) on the paving rake frame (11) can be adjusted by adjusting the position of the connecting member in the bar-shaped hole (232 b).

19. The machine according to any one of claims 15 to 18, characterized in that the lifting assembly (21) comprises a driving element (211) and a transmission element (212), the driving shaft (211 a) of the driving element (211) being connected to the input shaft of the transmission element (212).

20. The paving machine of claim 19, wherein the lower end of the telescopic portion (212 a) is connected with a first lifting lug (24) and is hinged with the upper end of the movable connecting rod (22) through the first lifting lug (24).

21. The machine of claim 19, further comprising a controller and a monitoring component for monitoring thickness information of the mat;

the controller is in signal connection with the monitoring component and the driving piece (211), and can receive the thickness information and control the start and stop of the driving piece (211) according to the thickness information so as to adjust the height of the paving rake frame (11).

22. The paving machine according to claim 19, wherein the number of the lifting units (2) is four, and the four lifting units (2) are arranged at four corners of the paving rake frame (11) in a one-to-one correspondence.

23. -spreading machine according to claim 19, characterized in that said upper part is a bulk rake (3).

24. The paving machine of claim 1, wherein each paving head comprises a paving bin (5), a discharging rake group (4) is arranged at an outlet end of the paving bin (5), the discharging rake group (4) comprises a plurality of discharging rakes (41), each discharging rake (41) comprises a discharging rake roller (411), a plurality of discharging sheets (412) are arranged at intervals along an axial direction of the discharging rake rollers (411), each discharging sheet (412) comprises a plurality of blades (412 a) arranged at intervals along the circumferential direction, each blade (412 a) comprises a handle (412 a-1) and a head (412 a-2), and the head (412 a-2) is mounted at an outer end of the handle (412 a-1) and can incline towards a rotating direction relative to the handle (412 a-1).

25. The machine of claim 24, wherein the blanking sheet (412) further comprises a base sheet (412 b) having a ring shape, an inner end of the handle (412 a-1) is fixed to the base sheet (412 b), and the blanking sheet (412) is externally mounted to the blanking rake roller (411) through the base sheet (412 b) and can rotate synchronously with the blanking rake roller (411).

26. The machine according to claim 25, wherein one of the inner wall surface of the base sheet (412 b) and the outer wall surface of the discharging rake roller (411) is provided with an axially extending male key (412 b-1), and the other is provided with an axially extending female key (411 a), and the male key (412 b-1) can be inserted into the female key (411 a) in the assembled state.

27. The machine of claim 25, wherein the central axis of the handle (412 a-1) is perpendicular to the central axis of the blanking rake roller (411) and is disposed at an angle to the radial direction of the blanking rake roller (411).

28. The machine according to any one of claims 24 to 27, wherein the number of said blades (412 a) is three, and the three blades (412 a) are equally spaced circumferentially.

29. A machine as claimed in claim 28, wherein, along the extension of said rake roller (411), adjacent N said blanking panels (412) are grouped, each group in which the following one (412) rotates in the same direction circumferentially with respect to the preceding adjacent said blanking panel (412)Degree installation, where N is equal to 3 or 4.

30. The paving machine of claim 28, wherein a second spacer (413) is disposed between two adjacent blanking pieces (412), and two ends of the second spacer (413) are respectively abutted against two adjacent blanking pieces (412).

31. The laying machine according to claim 30, characterized in that the second spacer (413) has an axial length of 25-30mm.

32. The paving machine of claim 28, wherein the number of the blanking rakes (41) is 6 or 7, the central axes of the blanking rake rollers (411) of each blanking rake (41) are positioned on the same mounting surface, and the central axes of the blanking rake rollers (411) are parallel to each other and are arranged at equal intervals;

from top to bottom, the installation surface gradually inclines to the front of the feeding direction, and the included angle between the installation surface and the horizontal plane is 45-47 degrees.

33. The spreading machine according to claim 28, wherein the spreading bin (5) further comprises a bin body (51), a transport member (52) is provided at the bottom of the bin body (51) for transporting the wood shaving stack (S), a sweeping rake (53) is provided at the top of the bin body (51) for sweeping the top of the wood shaving stack (S), and a viewing window is provided at the side of the bin body (51).