CN215602015U - Double-drum threshing device and harvester - Google Patents

Abstract

The utility model relates to a double-roller threshing device and a harvester, wherein the double-roller threshing device comprises two rollers, a gap bridge and a feeding wheel, roller shafts of the rollers extend forwards and backwards, and the two rollers are arranged side by side from left to right; the gap bridge is positioned at the front side of the roller, and the feeding wheels are transversely arranged between the gap bridge and the front end feeding port of the roller from left to right. According to the double-roller threshing device, the feeding wheels transversely arranged at the left and right sides are arranged between the gap bridge and the feeding port at the front end of the roller, so that the gap bridge of the double-roller harvester and the feeding port of the roller can be effectively prevented from being blocked, the operation is smoother, and the operation efficiency is improved.

Description

Double-drum threshing device and harvester

Technical Field

The utility model relates to the technical field of threshing harvesters, in particular to a double-roller threshing device and a harvester.

Background

The wheat harvester has complex working conditions, is particularly troublesome in harvesting wet crops, and is often blocked at the feeding part between the gap bridge and the roller.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art and provides a double-roller threshing device and a harvester.

The technical scheme for solving the technical problems is as follows: a double-roller threshing device comprises two rollers, a gap bridge and a feeding wheel, wherein roller shafts of the rollers extend forwards and backwards, and the two rollers are arranged side by side left and right; the gap bridge is positioned at the front side of the roller, and the feeding wheels are transversely arranged between the gap bridge and the front end feeding port of the roller from left to right.

The utility model has the beneficial effects that: according to the double-roller threshing device, the feeding wheels transversely arranged at the left and right sides are arranged between the gap bridge and the feeding port at the front end of the roller, so that the gap bridge of the double-roller harvester and the feeding port of the roller can be effectively prevented from being blocked, the operation is smoother, and the operation efficiency is improved.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, the feeding wheel comprises a feeding shaft, a plurality of cylinder walls and a plurality of feeding throwing plates, the cylinder walls are sleeved and fixed on the feeding shaft, the feeding throwing plates are distributed on the cylinder walls at intervals along the circumferential direction of the feeding shaft, and each feeding throwing plate extends in the direction parallel to the drum shaft.

The beneficial effect of adopting the further scheme is that: through setting up the feeding and throwing the board, can be with smooth throwing of material send the cylinder department of feeding mouth rear end.

Furthermore, each feeding throwing plate is fixed on the cylinder wall through a fixing seat, the feeding throwing plates and the cylinder wall are arranged at intervals, and the fixing seat is fixedly connected with one side wall of each feeding throwing plate.

The beneficial effect of adopting the further scheme is that: the feeding throwing plate and the cylinder wall are arranged at intervals by utilizing the fixed seat, so that the situation that material piles are blocked on the cylinder wall is avoided.

Furthermore, one end of the feeding throwing plate, which is far away from the cylinder wall, is provided with a tooth-shaped structure, or the feeding throwing plate is of a straight plate-shaped structure, or one end of the feeding throwing plate, which is far away from the cylinder wall, is bent to form a throwing hook groove.

The beneficial effect of adopting the further scheme is that: the material can be effectively hung for throwing.

Furthermore, the fixed seat is provided with an adjusting bolt, and the feeding throwing plate is provided with an adjusting long hole which extends and is arranged along the direction vertical to the drum shaft.

The beneficial effect of adopting the further scheme is that: the height of the feeding throwing plate can be adjusted according to the requirement.

Furthermore, a feeding arc plate is detachably mounted on the lower side of the feeding cone at the front ends of the two rollers, the feeding arc plate is provided with two arc surfaces which guide the flow of the two rollers respectively, a connecting flat plate is arranged at the front end of the feeding arc plate, and the rear end of the connecting flat plate is in lap joint with the two arc surfaces.

The beneficial effect of adopting the further scheme is that: the feeding arc plate is arranged on the lower side of the feeding cone of the roller, so that the crop can be guided to rapidly enter the roller for threshing.

Furthermore, the drum wall of the drum is provided with a plurality of rod tooth assemblies, and the other end of the drum shaft is detachably provided with a fixed width disc; the plurality of rod tooth assemblies are detachably arranged between the fixed width disc and the feeding cone, and each rod tooth assembly is parallel to the roller shaft; the roller shaft is fixedly connected with at least one connecting disc, the rod tooth assembly is divided into at least two sections which are respectively detachably arranged between the feeding cone and the adjacent connecting disc, between the fixed breadth disc and the adjacent connecting disc or between the two adjacent connecting discs.

The beneficial effect of adopting the further scheme is that: the multiple detachable rod tooth parts are used as an open type roller wall, so that the diameter of the cross section of the roller is adjustable, and the roller can be suitable for threshing crops with different requirements. The rod tooth part is arranged into at least one section, so that the length of a threshing area on the roller can be adjusted, and the practicability of the roller is further improved.

Furthermore, each section of the rod tooth assembly comprises a threshing rod and threshing teeth, rod tooth connecting pieces are fixedly arranged at two ends of the threshing rod respectively, and a plurality of groups of rod tooth mounting holes are formed in the rod tooth connecting pieces;

a plurality of threshing teeth are uniformly fixed on the threshing rod at intervals, the threshing teeth extend along the radial direction of the threshing rod, and an included angle is formed between the axis of each threshing tooth and the axis of the roller;

the threshing rod is arranged at the position corresponding to each group of rod tooth mounting holes, and the included angle between the axis of the threshing teeth and the drum shaft is different.

The beneficial effect of adopting the further scheme is that: the included angle between the axis of the threshing teeth and the roller shaft is adjusted by rotating the threshing rod, so that the threshing teeth of the roller can adapt to different crops and threshing conditions, and the applicability of the roller is wider.

Furthermore, a threshing fixed concave plate and the threshing movable concave plate are respectively arranged at the lower side of the threshing section of the roller, and one side edge of the threshing movable concave plate is rotatably connected with one side edge of the threshing fixed concave plate;

a pull rod mechanism is fixedly arranged outside the edge of the other side of the threshing movable concave plate, and comprises a handle and a handle fixing seat; one end of the handle is connected with the threshing movable concave plate and is used for driving the threshing movable concave plate to rotate up and down relative to the threshing fixed concave plate;

a long hole is formed in the middle of the handle along the length direction of the handle, the handle fixing seat is fixedly arranged and provided with a plurality of adjusting holes, and the adjusting holes are arranged at intervals up and down; the long hole can be matched and connected with any one adjusting hole, so that the handle can move up and down relative to the handle fixing seat and is positioned.

The beneficial effect of adopting the further scheme is that: the position of the threshing movable concave plate is easy to adjust.

A harvester comprises the double-roller threshing device.

The utility model has the beneficial effects that: to the harvester that has twin drum thresher, transversely arrange's feeding wheel about setting up between the feeding mouth of gap bridge and cylinder front end can prevent effectively that twin drum harvester gap bridge and cylinder feeding mouth department from blockking up, lets the operation more smooth, improves the operating efficiency.

Drawings

FIG. 1 is a schematic side view of a twin drum thresher according to the present invention;

FIG. 2 is a schematic perspective view of a feed wheel according to the present invention;

FIG. 3 is a schematic view of the construction of two drums according to the present invention;

FIG. 4 is a schematic view of the feed arc plate of the present invention;

FIG. 5 is a schematic view of a three-stage split structure of a feeding arc plate according to the present invention;

FIG. 6 is a schematic structural view of a recess screen of the present invention;

FIG. 7 is a schematic structural view of the notch plate screen draw bar mechanism of the present invention;

FIG. 8 is a partial structural view of M in FIG. 7;

FIG. 9 is a side view of the concave screen and drum installation of the present invention;

FIG. 10 is a schematic view of the arrangement of the concave screen of the present invention mounted with two rollers;

fig. 11 is a schematic view of the harvester structure of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a header; 2. bridging; 21. a chain harrow; 3. a feed wheel; 31. a feed shaft; 32. a cylinder wall; 33. feeding a throwing plate; 34. a fixed seat; 35. adjusting the long hole; 36. throwing the hook groove;

4. a drum; 401. feeding a cone; 402. a drum shaft; 403. fixing the breadth disc; 404. a rod toothing; 4041. a bar and tooth attachment; 405. a connecting disc;

5. a concave plate sieve; 51. threshing and fixing the concave plate; 52. a movable threshing concave plate; 53. a pull rod mechanism; 531. rotating the connecting piece; 532. a handle; 533. a handle fixing seat; 534. a rotating shaft; 535. a connecting pin; 536. an L-shaped connecting plate; 54. separating the fixed concave plate; 55. grass discharging and fixing concave plates;

6. a grass cutting and discharging device; 7. a cleaning device; 8. a cleaning fan; 9. a miscellaneous elevator; 10. a thresher body; 11. a kernel elevator; 12. a grain bin; 13. unloading the grain cylinder; 14. feeding an arc plate; 141. a cambered surface; 142. and connecting the flat plates.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 1 and fig. 2, the twin-drum threshing device of the present embodiment includes two drums 4, a gap bridge 2 and a feeding wheel 3, wherein a drum shaft 402 of the drum 4 extends forward and backward, and the two drums 4 are arranged side by side left and right; the gap bridge 2 is positioned at the front side of the roller 4, and the feeding wheel 3 is transversely arranged between the gap bridge 2 and the front end feeding opening of the roller 4 from left to right.

As shown in fig. 2, the feeding wheel 3 of this embodiment includes a feeding shaft 31, a plurality of cylinder walls 32 and a plurality of feeding throwing plates 33, the cylinder walls 32 are fixed on the feeding shaft 31, the feeding throwing plates 33 are arranged on the cylinder walls 32 at intervals along the circumferential direction of the feeding shaft 31, and each feeding throwing plate 33 extends along a direction parallel to the drum shaft 402. Through setting up the feeding and throwing the board, can be with smooth throwing of material send the cylinder department of feeding mouth rear end.

As shown in fig. 2, each feeding throwing plate 33 is fixed on the cylinder wall 32 through a fixing seat 34, the feeding throwing plate 33 and the cylinder wall 32 are arranged at intervals, and the fixing seat 34 is fixedly connected with one side wall of the feeding throwing plate 33. The feeding throwing plate and the cylinder wall are arranged at intervals by utilizing the fixed seat, so that the situation that material piles are blocked on the cylinder wall is avoided.

In this embodiment, three different feeding throwing plate embodiments are provided, and a tooth-shaped structure is provided at one end of the feeding throwing plate 33 away from the cylinder wall 32, or the feeding throwing plate 33 is a straight plate-shaped structure, or one end of the feeding throwing plate 33 away from the cylinder wall 32 is bent to form a throwing hook groove 36. The throwing groove can provide structural reinforcement for the feeding throwing plate.

As shown in fig. 2, the fixing seat 34 of this embodiment is provided with an adjusting bolt, and the feeding throwing plate 33 is provided with an adjusting long hole 35 extending in a direction perpendicular to the feeding shaft 31. The height of the feeding throwing plate can be adjusted according to the requirement.

This embodiment is to twin drum thresher, and feeding wheel transversely arranged about setting up between the feeding mouth of gap bridge and cylinder front end utilizes feeding wheel 3 to throw the material to cylinder entrance with feeding wheel 3 departments with the material transport feeding wheel 3 departments through 2 departments of gap bridge, can prevent effectively that twin drum harvester gap bridge and cylinder feeding mouth department from blockking up, lets the operation more smooth, improves the operating efficiency.

Example 2

The double-roller threshing device of the embodiment, as shown in fig. 3 to 5, comprises two rollers 4 and a feeding arc plate 14; each roller 4 comprises a feeding cone 401 and a roller shaft 402, and the feeding cone 401 is fixed at the front end of the roller shaft 402; the drum shafts 402 of the two drums 4 are arranged in parallel left and right; the feeding arc plate 14 is detachably arranged at the lower sides of the two feeding cones 401; the side of the feeding arc plate 14 facing the feeding cone 401 has an arc surface 141 for guiding the flow to each roller 4; the roller 4 is a longitudinal axial flow roller, two parallel longitudinal axial flow rollers are adopted for separation operation, and the feeding arc plate 14 is arranged on the lower side of the feeding cone 401, so that the separation device can independently perform the complete threshing process of crops without arranging an auxiliary device; meanwhile, the arc surfaces 141 of the feeding arc plate 14 corresponding to the two feeding cones 401 can uniformly guide the materials to the two rollers 4 respectively for threshing, so that the efficiency of threshing operation and the threshing quality are improved.

In the above embodiment, it is preferable that the fixed width disc 403 is detachably mounted to the rear end of the drum shaft 402; at least one bar tooth element 404 is detachably arranged between the fixed width disc 403 and the feeding cone 401, and the bar tooth element 404 is parallel to the roller shaft 402; it is further preferred that the bar engaging members 404 of the present invention are a plurality of bars, and the plurality of bar engaging members 404 are arranged around the drum shaft 402 at regular intervals around the drum shaft 402 with the drum shaft 402 as an axis, thereby forming an open drum wall; by providing a plurality of removable bar teeth 404, the diameter of the drum 4 can be adjusted, enabling it to be used for different crops or different threshing operations.

In the above embodiment, it is preferable that the rod engaging member 404 has at least two segments, each segment of the rod engaging member 404 is detachably connected to the connecting plate 405, and the connecting plate 405 is fixed to the drum shaft 402; each section of the rod tooth assembly 404 can be detached, so that the threshing device can be provided with different types of rod tooth assemblies 404 according to different types of crops, and the threshing device can be more suitable for the characteristics of different crops, thereby further improving the threshing efficiency and the threshing quality.

In the above embodiment, the rod engaging member 404 may preferably have two, three or four segments; because the stalk length, the grain size and the like of the crops are different, the number of the sections of the stalk tooth assembly 404 can be set by combining the characteristics of the crops, so that the threshing device has wide applicability.

Further preferably, the rod engaging member 404 is three segments, which are used for threshing, separating and discharging grass in sequence from the feeding cone 401 to the fixed breadth disc 403, and the length of the rod engaging members 404 in the three segments is equal; the use of three sections of the straw engaging members 404 allows the crop to be sequentially threshed, separated and weed-removed without the need for other auxiliary devices to remove grass.

In the above embodiment, preferably, the rod engaging member 404 includes threshing rods and threshing teeth, each threshing rod is fixed with a plurality of threshing teeth at even intervals, and each threshing tooth extends along the radial direction of the threshing rod; when the rod engaging member 404 is segmented, specifically, threshing rod segmentation, the threshing teeth are still uniformly distributed on each segment of threshing rod; when the roller 4 rotates, the threshing rod drives the crops to rotate, and the threshing teeth can thresh.

In the above embodiment, as shown in fig. 3, preferably, each segment of the rod-tooth assembly 404 includes a threshing rod and threshing teeth, two ends of the threshing rod are respectively fixedly provided with a rod-tooth connecting piece 4041, and the rod-tooth connecting piece 4041 is provided with a plurality of sets of rod-tooth mounting holes; a plurality of threshing teeth are uniformly fixed on the threshing rod at intervals, the threshing teeth extend along the radial direction of the threshing rod, and an included angle is formed between the axis of each threshing tooth and the drum shaft 402; the angle between the axis of threshing teeth and the drum shaft 402 is different at the mounting position of the threshing rod corresponding to each group of rod tooth mounting hole. During adjustment, the threshing rod is detached and rotated, so that the included angle between the axis of the threshing teeth and the drum shaft 402 is adjusted to a required angle, and then the rod tooth mounting hole corresponding to the position is fixed on the fixed breadth disc 403 or the connecting disc 405 through a bolt and a nut; in the adjusting process, the fixed positions of the two ends of the threshing rod are not changed, and only the mounting holes for fixing are changed; the included angle between the axis of the threshing teeth and the roller shaft is adjusted by rotating the threshing rod, so that the threshing teeth of the roller can adapt to different crops and threshing conditions, and the applicability of the roller is wider.

In the above embodiment, the threshing rod may be a rod with a smooth surface, or may be a threaded rod, and the threaded rod is preferably a threaded rod; the threshing teeth may also be threshing elements having a particular shape, such as helical teeth, conical teeth, etc.

In the above embodiment, preferably, the feeding cone 401 is provided with a spiral feeding blade; when the roller 4 rolls, the feeding cone 401 is driven to rotate, the spiral feeding blade on the feeding cone 401 can drive crops to enter the roller 4 and carry out spiral motion along the roller 4, and threshing is realized under the action of threshing teeth.

In the above embodiment, preferably, the two rollers 4 rotate in opposite directions, namely clockwise and counterclockwise; the rotation directions of the two rollers 4 are set to be opposite directions, so that the crops positioned between the two rollers 4 can be further threshed under the rotation of the two rollers, and the problem of poor threshing effect caused by mutual transfer of the crops of the two rollers 4 can be prevented.

In the above embodiment, preferably, the rear end edge of the feeding arc plate 14 is arc-shaped; the front end of the feeding arc plate 14 is provided with a connecting flat plate 142, the connecting flat plate 142 is fixedly connected with the arc surface 141, and the arc surface 141 is divided into a plurality of sections; the curved edge can be connected with a concave sieve 5 arranged at the lower side of the two drums 4, and the connecting plate 142 can be connected with a gap bridge 2 located at the front part of the threshing device.

In the above embodiment, preferably, the front dimension of each arc surface 141 of the feeding arc plate 14 is greater than or equal to the rear dimension; when the diameter is gradually reduced, the diameter of the cambered surface 141 corresponding to each feeding cone 401 is gradually reduced, so that the flow guiding effect on the crops can be further improved, and the crops can more easily enter the roller 4.

In the above embodiment, preferably, an arc transition connection structure is provided between the two arc surfaces 141 of the feeding arc plate 14 and between the connection flat plates 142; the arc transition connection structure can form separation between the two feeding cones 401, so that crops are separated when entering the two rollers 4, and the problems of feeding faults and the like caused by mutual influence in the entering process are prevented.

In the above embodiment, preferably, the feeding arc plate 14 may be integrally formed, or may be welded after being manufactured in segments; when the segments are manufactured, as shown in fig. 3, the segments are divided into three segments.

The working process of the threshing device provided by the utility model is as follows:

the crop enters the roller 4 along with the rotation of the feeding cone 401 under the matching of the feeding arc plate 14 and the feeding cone 401. The two rollers 4 rotate respectively in the anticlockwise direction and the clockwise direction, crops in each roller 4 spirally rotate towards the fixed breadth disc 403 along the rolling tangential direction, and threshing operation is carried out under the action of the rod tooth elements 404 of the rollers 4; the threshed seeds fall from the open drum wall and are continuously screened or collected, and the crop straws continuously rotate towards the fixed width disc 403 and are discharged out of the drum 4.

As shown in fig. 6, the harvester of the utility model comprises the threshing device, and further comprises a header 1, a gap bridge 2, a roller cover 3, a concave sieve 5, a chopping and grass discharging device 6, a cleaning device 7, a cleaning fan 8, a sundry residue elevator 9, a threshing machine body 10, a grain elevator 11, a grain tank 12 and a grain unloading cylinder 13.

The header 1 is arranged at the front part of the threshing machine body 10 and is communicated with a threshing device in the threshing machine body 10 through a gap bridge 2, and the harvested crops are fed into the threshing device. The threshing device also comprises a roller cover 3 and a concave sieve 5, the roller cover 3 is fixed above the concave sieve 5, a roller 4 is rotatably arranged in a threshing cavity enclosed by the roller cover 3 and the concave sieve 5, and the crops are threshed in the threshing cavity.

The rear end of the threshing device is communicated with the chopping and straw discharging device 6, and the threshed straws are discharged from the rear end of the threshing device and chopped or pushed backwards by the chopping and straw discharging device 6; the threshed grains fall to a cleaning device 7 below through a concave plate sieve 5.

The vibrating screen in the cleaning device 7 further cleans the grains, the cleaning fan 8 supplies air to the vibrating screen, the sundries and the grains are separated under the action of the vibrating screen and the cleaning fan 8, and the sundries are discharged from the rear end of the cleaning device 7 under the blowing of the cleaning fan 8; the seeds still containing impurities fall into an impurity elevator 9 from the rear part of the cleaning device 7, and the impurity elevator 9 sends the part of seeds back to the threshing device from the roller cover 3 for secondary threshing; after being screened by the cleaning device 7, clean grains are lifted to a grain tank 12 from the front end of the cleaning device 7 through a grain elevator 11, and the grain tank 12 can discharge grains through a grain discharging barrel 13 after being filled with the grains.

Example 3

As shown in fig. 6 to 11, in the present embodiment, a concave plate unit on a thresher body will be described in addition to embodiment 1 or embodiment 2. The lower side of the threshing section of the roller is respectively provided with a threshing fixed concave plate and a threshing movable concave plate, and the threshing section of the roller 4 is provided with a rotatable threshing movable concave plate 52, so that the size of a gap between the threshing movable concave plate and the roller 4 is adjustable, and the threshing device is suitable for different crops. One side edge of the threshing movable concave 52 is rotatably connected with one side edge of the threshing fixed concave 51; a pull rod mechanism 53 is fixedly arranged outside the other side edge of the threshing movable concave 52. The pull rod mechanism 53 comprises a rotary connecting piece 531, a handle 532, a handle fixing seat 533 and a rotary shaft 534; one end of the rotary connecting piece 531 is rotatably connected with the threshing movable concave 52, the other end is fixedly connected with the rotary shaft 534 through a bolt and a nut, and the rotary shaft 534 is fixedly connected with one end of the handle 532; a long hole is formed in the middle of the handle 532 along the length direction, the handle fixing seat 533 is fixed on the machine body, a plurality of adjusting holes are formed in the handle fixing seat, and the adjusting holes are arranged at intervals up and down; the long hole can be matched and connected with any adjusting hole through a bolt and a nut, so that the handle 532 can move up and down and be positioned relative to the handle fixing seat 533; when the handle 532 moves up and down, one end of the handle 532 rotates to drive the rotating shaft 534 to move left and right, and the rotating shaft 534 drives the rotating connecting piece 531 to rotate the threshing movable concave 52 up and down; the handle 532 is adopted to drive the rotating connecting piece 531 to drive the threshing movable concave plate 52 to rotate downwards or upwards, so that the structure is simple, labor is saved, and the adjusting process of the threshing movable concave plate 52 is simple and efficient; in addition, the position of the threshing movable concave 52 can be quickly judged according to the specific adjusting hole fixed by the handle 532, thereby being convenient for determining that the threshing movable concave 52 continuously rotates upwards or downwards.

The utility model discloses a it is fixed with arbitrary regulation hole to set up the slot hole on the handle 532, during the regulation, more easily match slot hole and regulation hole, simultaneously, because each position of slot hole all can be implemented fixedly, consequently, make accommodation process and fixed process convenient more laborsaving, need not to make the accurate removal of handle 532 to the particular position.

In the above embodiment, preferably, the elongated holes on the handle holder 533 have various arrangements, including being arranged at intervals along a straight line, or being arranged at intervals along a folding line.

In the above embodiment, the rotating link 531 and the rotating shaft 534 are preferably fixed by bolts, so that the displacement of the threshing movable concave 52 caused by the relative rotation between the rotating link 531 and the rotating shaft 534 during the threshing operation is prevented.

As shown in fig. 7, in the above embodiment, preferably, there are two rotating connectors 531, and the rotating shaft 534 penetrates through the other ends of the two rotating connectors 531; the rotating shaft 534 is parallel to the axial direction of the threshing movable concave 52, and the positions of the two rotating connectors 531 are respectively corresponding to the edges of the two ends of the threshing movable concave 52; the rotary connecting pieces 531 are arranged on the edges of the two ends of the threshing movable concave 52, so that the threshing movable concave 52 can be uniformly stressed, the rotary adjusting process of the threshing movable concave 52 is easier to control, and the threshing movable concave is more stable when being fixed.

In the above embodiment, preferably, the handle 532 is a bent structure, and the bent structure is near one end of the handle 532 connected with the rotating shaft 534; the handle 532 with the structure has short moment acting on the threshing movable concave 52 and long moment for applying force, so that the handle 532 saves more labor when adjusting the threshing movable concave 52.

In the above embodiment, as shown in fig. 7 and 8, it is preferable that the other end of the pivotal connector 531 is provided with the connection pin 535, the connection pin 535 is rotatable and positionable with respect to the pivotal connector 531, and the connection pin 535 is detachably connected to one end of the L-shaped connection plate 536; the edge of the end part of the threshing movable concave plate 52 is provided with a fixed part which extends outwards along the radial direction of the threshing movable concave plate, and the other end of the L-shaped connecting plate 536 is rotatably connected with the fixed part of the threshing movable concave plate 52; when the rotary connecting member 531 moves left and right, the horizontal force can be converted into a downward force by the connecting pin 535 and the L-shaped connecting plate 536, so that the threshing movable concave 52 can be rotated more easily, and the adjustment process of the threshing movable concave 52 is more labor-saving.

In the above embodiment, preferably, the recess plate screen 5 comprises two sets of recess plate units; the number of the rollers 4 is two, and the two rollers 4 are arranged side by side; a concave plate unit is arranged at the lower side of the threshing section of each roller 4; the threshing movable concave plates 52 of the two concave plate units are respectively positioned at the opposite outer sides of the two rollers 4 and have opposite rotating directions; the threshing movable concave plates 52 corresponding to the two rollers 4 can be independently adjusted, and each threshing movable concave plate 52 can adapt to the crop flow in the corresponding roller 4.

In the above embodiment, it is preferable that each of the concave units further includes a separation fixing concave 54 and a grass discharge fixing concave 55; each of said drums 4 further comprises a separating section and a weed-discharging section; the separation fixing concave plate 54 and the grass discharge fixing concave plate 55 are respectively and fixedly arranged at the lower sides of the separation section and the grass discharge section; each section of concave plate can be independently disassembled; meanwhile, during adjustment, only the concave plate unit corresponding to the threshing section can be adjusted, and the separation fixing concave plate 54 and the grass discharge fixing concave plate 55 are not needed, so that the adjustment process is more labor-saving and quicker.

The working process of the concave plate component of the embodiment is as follows:

before the threshing device carries out threshing operation, the clearance between a threshing movable concave plate 52 of the concave plate sieve 5 and the roller 4 is adjusted; the specific adjustment mode is as follows:

when the handle 532 is pulled down or pushed up, one end of the handle 532 rotates to drive the rotating shaft 534 to move left and right, so that the rotating connecting piece 531 is driven to move left and right; the rotating link 531 drives the connecting pin 535 and the L-shaped connecting plate 536 to convert the horizontal force into a downward oblique force, so that the threshing movable concave 52 rotates downward or upward, and the gap between the threshing movable concave and the roller 4 is increased or decreased. After the gap between the threshing movable concave 52 and the roller 4 is adjusted to a required size, the long hole on the handle 532 and one adjusting hole of the handle fixing seat 533 are fixed through a bolt and a nut; thereby completing the adjustment of the threshing movable concave 52.

Example 4

As shown in fig. 11, the harvester of this embodiment includes the double-drum threshing device of any one of embodiments 1 to 3, and further includes a header 1, a gap bridge 2, a drum cover 3, a drum 4, a concave plate sieve 5, a chopping and grass discharging device 6, a cleaning device 7, a cleaning fan 8, an impurity and residue elevator 9, a threshing machine body 10, a grain elevator 11, a grain bin 12, and a grain unloading drum 13.

The header 1 is arranged at the front part of the threshing machine body 10 and is communicated with a threshing device in the threshing machine body 10 through a gap bridge 2, and the harvested crops are fed into the threshing device. Threshing device includes cylinder lid 3, cylinder 4 and concave sieve 5, and cylinder lid 3 is fixed in the top of concave sieve 5, and cylinder 4 is two, and two cylinders 4 are rotatable installing in the threshing cavity that cylinder lid 3 and concave sieve 5 enclose side by side, and cylinder 4's axis sets up along the orientation by preceding to back of harvester, and the crop is threshed in threshing cavity realization.

The rear end of the threshing device is communicated with the chopping and straw discharging device 6, and the threshed straws are discharged from the rear end of the threshing device and chopped or pushed backwards by the chopping and straw discharging device 6; the threshed grains fall to a cleaning device 7 below through a concave plate sieve 5.

The vibrating screen in the cleaning device 7 further cleans the grains, the cleaning fan 8 supplies air to the vibrating screen, the sundries and the grains are separated under the action of the vibrating screen and the cleaning fan 8, and the sundries are discharged from the rear end of the cleaning device 7 under the blowing of the cleaning fan 8; the seeds still containing impurities fall into an impurity elevator 9 from the rear part of the cleaning device 7, and the impurity elevator 9 sends the part of seeds back to the threshing device from the roller cover 3 for secondary threshing; after being screened by the cleaning device 7, clean grains are lifted to a grain tank 12 from the front end of the cleaning device 7 through a grain elevator 11, and the grain tank 12 can discharge grains through a grain discharging barrel 13 after being filled with the grains.

To the harvester that has twin drum thresher, transversely arrange's feeding wheel about setting up between the feeding mouth of gap bridge and cylinder front end can prevent effectively that twin drum harvester gap bridge and cylinder feeding mouth department from blockking up, lets the operation more smooth, improves the operating efficiency.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A double-roller threshing device is characterized by comprising two rollers, a gap bridge and a feeding wheel, wherein roller shafts of the rollers extend forwards and backwards, and the two rollers are arranged side by side left and right; the gap bridge is positioned at the front side of the roller, and the feeding wheels are transversely arranged between the gap bridge and the front end feeding port of the roller from left to right.

2. The twin-drum threshing apparatus of claim 1 wherein the feeding wheel comprises a feeding shaft, a drum wall and a plurality of feeding throwing plates, the drum wall is sleeved and fixed on the feeding shaft, the feeding throwing plates are arranged on the drum wall at intervals along the circumferential direction of the feeding shaft, and each feeding throwing plate extends in a direction parallel to the drum shaft.

3. The twin-drum threshing apparatus of claim 2 wherein each feeding throwing plate is fixed to the drum wall by a fixing seat, the feeding throwing plates are spaced apart from the drum wall, and the fixing seat is fixedly connected to a side wall of the feeding throwing plate.

4. The twin drum threshing apparatus of claim 3 wherein the end of the feeding throwing plate away from the drum wall is provided with a tooth structure, or the feeding throwing plate is a straight plate structure, or the end of the feeding throwing plate away from the drum wall is bent to form a throwing hook slot.

5. The twin drum thresher of claim 3, wherein the fixing base is provided with an adjusting bolt, and the feeding throwing plate is provided with an adjusting slot hole extending in a direction perpendicular to the axis of the drum.

6. The twin drum thresher of any one of claims 1 to 5 wherein a feed arc plate is removably mounted to the underside of the feed cone at the front of each of said drums, said feed arc plate having two curved surfaces for directing flow to each of said drums, said feed arc plate having a connecting plate at its front end, said connecting plate having a rear end overlapping said curved surfaces.

7. The twin drum threshing apparatus of claim 6 wherein the drum wall of the drum is a plurality of bar teeth, and the other end of the drum shaft is detachably mounted with a fixed width disc; the plurality of rod tooth assemblies are detachably arranged between the fixed width disc and the feeding cone, and each rod tooth assembly is parallel to the roller shaft; the roller shaft is fixedly connected with at least one connecting disc, the rod tooth assembly is divided into at least two sections which are respectively detachably arranged between the feeding cone and the adjacent connecting disc, between the fixed breadth disc and the adjacent connecting disc or between the two adjacent connecting discs.

8. The twin-drum threshing apparatus of claim 7 wherein each segment of the threshing teeth assembly comprises a threshing rod and threshing teeth, and the threshing rod is fixedly provided with a rod teeth connecting piece at each end, and the rod teeth connecting piece is provided with a plurality of sets of rod teeth mounting holes;

a plurality of threshing teeth are uniformly fixed on the threshing rod at intervals, the threshing teeth extend along the radial direction of the threshing rod, and an included angle is formed between the axis of each threshing tooth and the axis of the roller;

the threshing rod is arranged at the position corresponding to each group of rod tooth mounting holes, and the included angle between the axis of the threshing teeth and the drum shaft is different.

9. The twin-drum threshing apparatus according to any one of claims 1 to 5, wherein a threshing stationary concave and a threshing movable concave are mounted on the lower side of the threshing section of the drum, respectively, and one side edge of the threshing movable concave is rotatably connected with one side edge of the threshing stationary concave;

a pull rod mechanism is fixedly arranged outside the edge of the other side of the threshing movable concave plate, and comprises a handle and a handle fixing seat; one end of the handle is connected with the threshing movable concave plate and is used for driving the threshing movable concave plate to rotate up and down relative to the threshing fixed concave plate;

a long hole is formed in the middle of the handle along the length direction of the handle, the handle fixing seat is fixedly arranged and provided with a plurality of adjusting holes, and the adjusting holes are arranged at intervals up and down; the long hole can be matched and connected with any one adjusting hole, so that the handle can move up and down relative to the handle fixing seat and is positioned.

10. A harvester, characterized in that it comprises a twin drum threshing device according to any of claims 1 to 9.

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