CN110225699B

CN110225699B - Quantity adjusting mechanism of roller type delivery device

Info

Publication number: CN110225699B
Application number: CN201880008404.1A
Authority: CN
Inventors: 福光康治; 高山恭生; 高山定之; 有吉映明
Original assignee: Agritecno Yazaki Co Ltd
Current assignee: Agricultural Technology Exploration Co ltd
Priority date: 2017-01-27
Filing date: 2018-01-19
Publication date: 2022-04-12
Anticipated expiration: 2038-01-19
Also published as: WO2018139370A1; KR102321328B1; KR20190104408A; CN110225699A; JP2018117596A; JP6765676B2

Abstract

A slide roller assembly (A) is fixed to a feed drive shaft (3), the feed drive shaft (3) is connected to a plurality of adjustment handles (1) of a plurality of adjustment handle assemblies (C) for adjusting the feed amount, and the feed drive shaft (3) is slid by the plurality of adjustment handles (1) to adjust the roller opening of the plurality of slide roller assemblies (A). A plurality of slide roller assemblies (A) can be simultaneously adjusted by the plurality of adjustment handles (1), and a fine adjustment mechanism (B) capable of finely adjusting the delivery amount of each slide roller assembly (A) is further provided.

Description

Quantity adjusting mechanism of roller type delivery device

Technical Field

The present invention relates to a quantity adjusting mechanism for a roller feeder in a sowing machine, a fertilizing machine, or the like, and relates to a mechanism for adjusting the gap positions of all or a plurality of rollers of a roller feeder for feeding granular materials such as seeds or fertilizers.

Background

Conventionally, a feed unit of a sowing machine or a fertilizing machine is constituted by a roller-type feed device, and a mechanism for adjusting the feed amount of the roller-type feed device by sliding a roller on a sliding side of the feed device with respect to a roller on a fixed side is known. Further, in a position adjusting mechanism of a plurality of rollers, a technique is also known in which all or a plurality of fertilizing and seeding rollers are once adjusted by an adjusting handle (patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2016 & 158548

Disclosure of Invention

The present invention has been made in view of the fact that the operation using a plurality of adjustment handles for adjusting the amount of all or a plurality of strips at once causes unevenness in the amount of fertilizer application and seeding for each strip, and has been made by providing a fine adjustment device for each of the roller feeders in addition to a plurality of position adjustment mechanisms.

Further, since the technique disclosed in patent document 1 uses the screw fastening mechanism, there are problems that the operation is difficult when the screw is loosened or fastened, and the screw fastening mechanism is loosened during the operation. In contrast, in the present invention, among the plurality of position adjustment mechanisms, the mechanism for engaging and disengaging the delivery drive shaft and the slide roller assembly can easily perform these operations.

Further, in order to enable adjustment in a minute unit in a portion of the plurality of adjustment knobs of the plurality of position adjustment mechanisms, the operation mechanism of the plurality of adjustment knobs is configured to be capable of finely adjusting a relationship between a rotation angle of the plurality of adjustment knobs and a feed amount.

The problems to be solved by the present invention are as described above, and means for solving the problems are described next.

In the amount adjustment mechanism of the roller feed device according to the embodiment of the present invention, the plurality of slide roller assemblies are fixed to the feed drive shaft, the feed drive shaft and the plurality of adjustment knobs of the plurality of adjustment knob assemblies for adjusting the feed amount are connected, the feed drive shaft is slid by the plurality of adjustment knobs to adjust the roller opening degrees of the plurality of slide roller assemblies, and the plurality of slide roller assemblies are each provided with a fine adjustment mechanism capable of finely adjusting the feed amount of the slide roller assembly.

In the operation of a plurality of adjustment handles for adjusting the quantity of all or a plurality of strips at once, in consideration of the uneven fertilization and seeding quantity of each strip, a fine adjustment device is provided for each roll type delivery device in addition to a plurality of position adjustment mechanisms, so that fine adjustment between adjacent seed and fertilizer delivery device units can be performed.

In the structure capable of adjusting a plurality of slide roller assemblies simultaneously, in order to adjust the interval between the adjacent (each) seed and fertilizer delivery device units, an engaging and disengaging mechanism capable of engaging and disengaging the delivery driving shaft and the slide roller assemblies is provided, the engaging and disengaging mechanism is composed of a shaft engaging member and an engaging state maintaining member, the shaft engaging member can be fixed in an engaging state by the engaging state maintaining member in a state where the shaft engaging member is in contact with the delivery driving shaft, and the engaging state maintaining member rotates around the delivery driving shaft in a state where the engaging member is engaged with the shaft engaging member, and becomes a fulcrum spanning structure spanning the pivot supporting pin between the shaft engaging member and the engaging state maintaining member.

The engagement/disengagement mechanism is constituted by the shaft engaging member, the engaged state maintaining member, the fulcrum-crossing spring, the pressing resin member, and the like, and thus, the operation of engaging and disengaging the delivery drive shaft with and from the slide roller assembly can be easily performed.

The slide roller assembly and the plurality of adjustment handle assemblies are mounted on the unit mounting rod, the feed drive shaft is inserted through a hexagonal shaft fitting hole of the fertilizing and seeding roller constituting the slide roller assembly, the other end of the feed drive shaft is fixed to a feed drive shaft side free fitting shaft of the plurality of adjustment handle assemblies, the feed drive shaft side free fitting shaft fixed to the end of the feed drive shaft is connected to the plurality of adjustment handle shafts in a free fitting state, and the plurality of adjustment handle shafts are rotated by the rotation of the plurality of adjustment handles, so that the feed drive shaft side free fitting shaft and the feed drive shaft slide by a plurality of position adjustments.

In this way, the specific configuration of the plurality of adjustment handle shafts, the feed drive shaft side play fitting shaft, and the feed drive shaft enables adjustment of a micro unit even in the plurality of adjustment handle portions of the plurality of position adjustment mechanisms. Therefore, in the operating mechanism of the plurality of adjustment handles, fine adjustment can be performed by the relationship between the rotation and the amount of the handle.

The plurality of thread grooves are engraved in a plurality of adjustment handle shafts that are fixed to and rotate in a plurality of adjustment handles of the plurality of adjustment handle assemblies, and by providing the number of the plurality of thread grooves and a click mechanism that maintains the rotational state of the plurality of adjustment handles, the rotational positions of the plurality of adjustment handles can be fixed in multiple stages, and fine adjustment in stages can be performed by the same number as the product of the number of the thread grooves and the number of the fixed positions of the rotational positions.

When the plurality of adjustment handles are rotated 360 degrees, the rotation angle in the middle is stopped by the click mechanism, and the adjustment amount of the slide roller assembly can be finely adjusted in multiple stages by the plurality of adjustment handles.

Effects of the invention

The invention is characterized in that a fine adjustment device is arranged on each roller type delivery device besides a plurality of position adjustment mechanisms, and fine adjustment between adjacent seed and fertilizer delivery device units can be carried out, thereby solving the problems of the structure of a plurality of adjustment handles for carrying out one-time adjustment on all or a plurality of strips in the prior art, namely, solving the problem of uneven fertilization and seeding amount of each strip by operating the plurality of adjustment handles.

Further, since the technique disclosed in patent document 1 uses the screw fastening mechanism, there are problems that the operation is difficult when the screw is loosened or fastened, and the screw fastening mechanism is loosened during the operation. In contrast, in the multiple position adjustment mechanisms according to the present invention, the mechanism for engaging and disengaging the delivery drive shaft and the slide roller assembly can simplify these operations.

Further, the plurality of adjustment handle portions of the plurality of position adjustment mechanisms are also configured to be adjustable in a micro unit, and the relationship between the rotation angle and the feed amount of the plurality of adjustment handles can be finely adjusted in the operation mechanism of the plurality of adjustment handles.

Drawings

Fig. 1 is a side view of a seed/fertilizer feeding device unit including a plurality of position adjustment mechanisms.

FIG. 2 is a rear view of the multi-row type fertilizer and seed drill in which fourteen seed and fertilizer feeding units are connected.

Fig. 3 is a plan view showing a plurality of position adjustment mechanisms.

Fig. 4 is a plan view showing a slide roller assembly and a fine adjustment mechanism of the amount adjustment mechanism of the roller feeding device.

Fig. 5 is an enlarged plan view showing a part of the slide roller assembly constituting the plurality of position adjustment mechanisms and the fine adjustment mechanism provided at the same time in the single roller-type fertilizing and seeding unit.

Fig. 6 is a plan view of a slide roller assembly of a single multi-position adjustment mechanism.

Fig. 7 is a plan view of a fine adjustment mechanism showing a plurality of position adjustment mechanisms in a single line.

Fig. 8 is a plan view showing the structure of the shaft engaging member, the engaged state maintaining member, the fine adjustment side roller 1, and the fine adjustment knob constituting the engaging and disengaging mechanism for engaging and disengaging the slide roller assembly and the feed drive shaft in the amount adjusting mechanism of the roller feed device.

Fig. 9 is a side view of a portion of the shaft engaging member and the engaged state maintaining member, the fixed-side roller, the plurality of adjustment slide-side rollers, the fine adjustment side roller, and the fine adjustment knob that fix the slide roller assembly to the delivery drive shaft.

FIG. 10 is a top view of a portion of a multiple bar adjustment handle assembly.

FIG. 11 is a side view of a portion of a multiple bar adjustment handle assembly.

Fig. 12 is an outside view (a), a rear view (b), an inside view (c), and a central sectional view (d) of the engagement/disengagement body support portion for engaging and disengaging the feed drive shaft and the slide roller assembly.

Fig. 13 is an outside side view (a), a rear view (b), and an inside side view (c) of the fixed-side roller.

Fig. 14 is an outside side view, a rear view, an inside side view and a sectional view of the plurality of regulating slide side rollers.

Fig. 15 is a rear view (a) and an inside side view (b) of the vernier side roller.

Fig. 16 is a side view (a) and a side view (b) of the fixed-side roller housing that supports the fixed-side roller.

Fig. 17 is a rear view (a) and a side view (b) of the fine adjustment screw shaft externally fitted to the feed drive shaft.

Fig. 18 is a side view (a) and a rear view (b) of an engaged state maintaining member constituting the engaging and disengaging mechanism.

Fig. 19 is a side view (a) and a rear view (b) of a shaft engaging member constituting the engaging and disengaging mechanism D.

Fig. 20 is a side view (a) and a rear view (b) of the fulcrum cross spring constituting the engagement and disengagement mechanism.

Fig. 21 is a rear view (a), a side view (b), and a perspective view (c) of a pressing resin body constituting the engaging and disengaging mechanism.

Fig. 22 is an outside side view (a), a rear view (b), and an inside side view (c) of the freely rotating support shaft.

Fig. 23 is a side view (a) and a rear view (b) of a plurality of adjustment handles.

Fig. 24 is a side view (a) and a rear view (b) of the adjustment position marker.

Fig. 25 is a side view (a) and a rear view (b) of a plurality of adjustment handle shafts.

FIG. 26 is a side and rear view of the adjustment position pawl ring 23 of the multiple adjustment handle.

Fig. 27 is a plan view (a) and a side view (b) of the connecting cylinder connecting the feed drive shaft and the handle shaft.

Fig. 28 is a plan view of the adjustment amount marks of the plurality of position adjustment mechanisms.

Description of the symbols

A sliding roller assembly

B fine adjustment mechanism

C multi-strip adjusting handle assembly

D clamping and disengaging mechanism

U seed, fertilizer send out device unit

3 delivery drive shaft

4-shaft clamping piece

5 seed delivery device

6 engaging state maintaining member

7 fertilizer delivery device

8 fixed side roller

9 multiple regulating sliding side roller

10 Main frame

11 vernier side roller

11a fine adjustment knob

11b particle-embedded protrusion

12 unit mounting bar

13 seed hopper

14 fertilizer hopper

15 engaging and disengaging body supporting part

15a, 15b left and right guide plates

15c roller side fixing plate

15d bearing body

15f, 15g pivot axle

16 fulcrum spanning spring

17 pressing the resin body

18 fine adjustment screw shaft

19 fertilizing roller shell

20 sowing roller shell

21 one-touch type fastener

22 fixed side roll shell

23 position adjusting ratchet ring

24 connected cylinder

25 handle shaft

26 adjustment amount marking

27 position regulating mark body

28 feeding out driving shaft side running embedded shaft

29 pawl mechanism

30 freely rotating support shaft

31 rolling roller

32 hilling disk

33 ditching disc

34 waterproof cover

35 parallel connecting rod

36 position fixing part

37 multi-strip adjusting handle frame

38 adjusting internal thread

39 fine adjustment pawl

40 inner circumference bearing

41 outer peripheral bearing

42 delivery roll frame

43 Fine adjustment mechanism frame

Detailed Description

A fertilizing and seeding machine including a plurality of position adjustment mechanisms will be described with reference to fig. 1, 2, 3, and 4.

The seed/fertilizer feeding device unit U is configured to: the fertilizing unit and the seeding unit are integrated in front and back, and seeding operation can be performed while fertilizing operation is performed.

A fertilizer hopper 14 is disposed at the upper front portion, and a seed hopper 13 is disposed at the upper rear portion, and both are integrally or separately provided with a locking metal fitting made up of a one-touch locking piece 21 provided at the side surfaces of the fertilizer hopper 14 and the seed hopper 13.

Generally, the amount of fertilizer to be applied is greater than the amount of seeds to be sown, and therefore the fertilizer hopper 14 constitutes a larger capacity than the seed hopper 13.

A fertilizer feeding device 7 disposed in the fertilizer application roller case 19 is disposed at a lower portion of the fertilizer hopper 14, and a seed feeding device 5 disposed in the sowing roller case 20 is disposed below the seed hopper 13.

A waterproof cover 34 is provided below the fertilizer feeding device 7 and the seed feeding device 5 so that the fertilizer and seeds fed from the fertilizer feeding device 7 and the seed feeding device 5 and dropped are not wetted by rain water or the like.

The waterproof cover 34 also has a function of preventing fertilizer and seeds from flying out from the gaps between the fertilizer feeding device 7 and the seed feeding device 5 and the vertically rotating main frame 10.

The seed/fertilizer feeding device unit U fixes the fertilizer feeding device 7 and the seed feeding device 5 to a position fixing member 36, and the position fixing member 36 is configured to be attachable to and detachable from a unit mounting rod 12 provided on a working vehicle such as a tractor.

The plurality of seed and fertilizer feeding device units U are fixed to the unit mounting rod 12 by the position fixing member 36, and when the interval between the plurality of seed and fertilizer feeding device units U is adjusted, the engagement between the position fixing member 36 and the unit mounting rod 12 is released, and the seed and fertilizer feeding device unit U per unit is slid on the unit mounting rod 12, whereby the interval can be adjusted.

When the distance between the seed and fertilizer feeding device unit U is adjusted, it is necessary to release the slide roller assembly a from the feeding drive shaft 3 of the plurality of position adjustment mechanisms, and to configure the engaging and disengaging mechanism D for the plurality of position adjustment mechanisms including the shaft engaging member 4 and the engaged state maintaining member 6 at the time of adjustment and non-adjustment.

The slide roller assembly a is shown in fig. 6, 7 and 8.

The slide roller assembly a is a portion that slides with respect to the fixed-side roller 8 fixed to the position fixing member 36 side by the delivery roller frame 42 and the fixed-side roller housing 22.

The feed drive shaft 3 is constituted by a part of the engagement/disengagement body support part 15, the engagement state maintaining member 6, and the engagement/disengagement mechanism D of the shaft engaging member 4, which slide with respect to the fixed side roller 8, and a plurality of adjustment slide side rollers 9, a fine adjustment side roller 11, a fine adjustment knob 11a, a fine adjustment screw shaft 18, and the like.

Among the components of the slide roller assembly a, the fine adjustment side roller 11 and the fine adjustment knob 11a that slide on the fine adjustment side roller 11 for further fine adjustment constitute a fine adjustment mechanism B.

When the unit mounting rod 12 slides left and right for each unit of the seed and fertilizer feeding device unit U, the engaging and disengaging mechanism D is released.

Further, when the feed amounts of a plurality of or all of the seeds are adjusted at once by the operation of the plurality of adjustment handles 1 using the plurality of position adjustment mechanisms, the engaging and disengaging mechanism D is brought into an engaged state with all of the seed and fertilizer feeding device units U.

Parallel links 35 are disposed below the position fixing members 36, and the main frame 10 is supported by the parallel links 35 so as to be vertically movable in parallel.

A furrowing pan 33 is disposed at the forefront of the main frame 10 to form a furrow for sowing and fertilizing, and a hilling pan 32 is disposed at the rear of the furrowing pan 33, and all fertilizers and seeds put into the furrow formed by the furrowing pan 33 are hilled by the hilling pan 32.

And a rolling roller 31 rolling the field soil of the hilled seed discharging device 5 is supported at the rear of the hilling tray 32. The outer periphery of the rolling roller 31 is provided with a scraper 37.

Fig. 2 discloses a plurality of position adjustment mechanisms in which fourteen sets of seed/fertilizer feeding device units U are arranged in parallel. When the fourteen seed and fertilizer feeding device units U are arranged in this manner, all fourteen seed and fertilizer feeding devices can be adjusted by a set of the plurality of adjustment handle assemblies C, but in fig. 2, the seed and fertilizer feeding device units are divided into seven pieces on the left and right, and the plurality of adjustment handle assemblies C on the right and the plurality of adjustment handle assemblies C on the left are provided.

Next, the mounting positions of the multiple adjustment handle assembly C and the seed and fertilizer feeding device unit U of the multiple position adjustment mechanism of the present invention will be described with reference to fig. 3 and 4.

A unit attachment lever 12 is attached to a rear portion of a working vehicle such as a tractor via a working machine lifting device. The seed/fertilizer feeding device unit U and the plurality of adjustment handle assemblies C of the present invention are attached to the unit attachment pole 12.

In fig. 2, an example is shown in which each of seven pieces is divided into right and left pieces and mounted as a plurality of position adjusting mechanisms, but three pieces of the plurality of position adjusting mechanisms with respect to the left seven pieces in this structure are shown in fig. 3 and 4.

Fig. 3 is a plan view of a portion of the seed/fertilizer feeding device unit U where the position fixing member 36 is also provided.

Fig. 4 shows a plurality of position adjustment mechanisms in a state where a part of the position fixing member 36 is removed from the seed/fertilizer feeding device unit U and a part of the slide roller assembly a is exposed.

In fig. 3, the rotation direction of the fertilizer application feed drive shaft 3 and the rotation direction of the seed sowing feed drive shaft 3 in the feed drive shaft 3 are opposite directions in the arrow with a circular arc shown at the left end.

One of the delivery drive shafts 3 is forcibly rotated by a motor or a ground-engaging rotational driving force from a ground-engaging wheel. The other feed drive shaft 3 for sowing and fertilizing is configured to: one forced rotational force is transmitted through a meshing gear 8a provided on the outer periphery of the fixed-side roller 8 to be rotated.

As shown in fig. 3, 4, 10, and 11, the plurality of adjustment handle assemblies C are configured to be fixed to the unit attachment pole 12 so as to be slidable in the left-right direction.

The adjustment handle assemblies C are also configured to be lockable and unlockable to the unit attachment lever 12 by a position fixing member 36, and a plurality of adjustment handle frames 37 are extended from the position fixing member 36.

An adjustment female screw 38 is fixedly supported on the adjustment handle frames 37, and a male screw portion screwed to the outer periphery of the adjustment handle shafts 25 connected to the adjustment handles 1 is screwed to an inner diameter screw portion of the adjustment female screw 38.

By rotating the plurality of adjustment handle shafts 25 by the plurality of adjustment handles 1, portions of the plurality of adjustment handle shafts 25 can be moved left and right at fine intervals with respect to the adjustment female screw 38 and the plurality of adjustment handle frames 37.

The outer periphery of the adjustment handle shafts 25 rotated by the adjustment handles 1 is engraved with a male screw, and the adjustment position pawl ring 23 is engaged and rotated together. With the plurality of adjustment handle shafts 25, the outer periphery abuts against the pawl projection of the fine adjustment pawl 39, thereby determining the rotational position of the plurality of adjustment handles 1. The adjustment position pawl ring 23 engraved with twenty pawl recesses 23a is caught and rotated together.

The spring bias between the fine adjustment pawls 39 and the adjustment position pawl ring 23 causes the locking state, and the plurality of adjustment handles 1 determine the locking position every eighteenth degrees.

Further, the female screw of the adjustment female screw 38 fixed to the plurality of adjustment handle frames 37 and the thread groove 25a of the male screw of the plurality of adjustment handle shafts 25 are finely engraved, and the number of rotations of the plurality of adjustment handles 1 is configured such that the fifteen thread grooves 25a at the pitch of 2mm correspond to a predetermined adjustment width.

Therefore, the twenty locking recesses and the fifteen thread grooves 25a of the adjustment position pawl ring 23 provide three hundred stop positions of the adjustment handle 1 as a whole, and the adjustment position is determined in units of 1/300.

The shape of the detent ring 23 in this adjustment position is shown in fig. 26.

The adjustment position pawl ring 23 is provided with a pawl recess 23a in twenty positions on the outer periphery thereof, into which the distal end projections of the fine adjustment pawls 39 are fitted to fix the positions of the plurality of adjustment handles 1, and the fine adjustment pawls 39 are fitted into the pawl recesses 23a to position the plurality of adjustment handles 1.

In addition, fifteen thread grooves 25a with the interval of 2mm are engraved on the adjusting inner thread 38 and the fine adjustment threads on the outer periphery of the plurality of adjusting handle shafts 25, with the adjusting width of 0 to 30 mm. The adjusting handles 1 can only move 2mm after rotating one circle.

Therefore, since the number of the click recesses 23a of the adjustment position click ring 23 is twenty and the number of the adjustment threads of the plurality of adjustment handle shafts 25 is fifteen by 30mm, the adjustment width of 30mm can be divided into three hundred and fixedly stopped.

The position adjustment of the plurality of position adjustment mechanisms can be fine-tuned by three hundred scales between 30 mm.

In order to obtain the scale of the three-hundred adjustment positions, adjustment amount marks 26 shown in fig. 28 are arranged on the plurality of adjustment handle frames 37 between the adjustment female screw 38 for fertilization and the adjustment female screw 38 for sowing. In the adjustment amount mark 26, a scale in millimeters is engraved between 30 mm.

In addition, an adjustment position indicator 27 shown in fig. 24 is fitted on the side of the fixed adjustment amount mark 26 on the opposite side to the side of the plurality of adjustment handle shafts 25 to which the plurality of adjustment handles 1 are fixed.

By adjusting the movement of the plurality of adjustment handle shafts 25, the adjustment position indicator 27 is configured to move in the lateral direction of the adjustment amount mark 26, and the marking of the plurality of position adjustment positions for fertilization and the plurality of position adjustment positions for sowing can be confirmed.

As shown in fig. 23, the shape of the plurality of adjustment handles 1 is such that bolts are screwed into bolt holes at two positions at the outer end of the plurality of adjustment handle shafts 25.

Since the feed drive shaft 3 for fertilizer application and the feed drive shaft 3 for seed sowing are forcibly driven in the reverse direction by the rotational drive force from the drive motor or the ground drive wheel in a linked manner, and the forcibly driven rotation is not transmitted to the plurality of adjustment handles 1, the feed drive shaft 3 and the plurality of adjustment handle shafts 25 can slide in the left and right directions for adjusting the strip pitch, but the feed drive shaft 3 can be forcibly rotated for feeding and the plurality of adjustment handles 1 can be freely rotated for adjusting the strip pitch.

That is, the idling mechanism between the feed drive shaft 3 and the plurality of adjustment handle shafts 25 is configured between the feed drive shaft side play fitting shaft 28 and the plurality of adjustment handle shafts 25 shown in fig. 22.

As shown in fig. 10, the feeding-out drive shaft side loose fitting shaft 28 is configured to be rotatable with respect to the plurality of adjustment handle shafts 25 by an inner peripheral bearing 40 for feeding out the drive shaft side loose fitting shaft 28 fitted to an inner diameter portion of the plurality of adjustment handle shafts 25.

The plurality of adjustment handle shafts 25 are supported by the plurality of adjustment handle frames 37 so as to be freely fitted thereto via outer peripheral bearings 41 supported by the plurality of adjustment handle frames 37, and the plurality of adjustment handles 1 and the feed drive shaft 3 are rotatable with respect to each other, but the plurality of adjustment handle shafts 25 and the feed drive shaft 3 can be moved only by the same adjustment width in the left-right direction by rotation in accordance with the adjustment of the pitch of the plurality of adjustment handles 1.

The feeding drive shaft side free fitting shaft 28 is supported so as to be freely fitted through a support hole of an inner peripheral bearing 40 provided inside the plurality of adjustment handle shafts 25, and the outer end of the feeding drive shaft 3 is fitted and fixed to the outer diameter portion of the plurality of adjustment handle shafts 25 projecting inward by a coupling cylindrical body 24 shown in fig. 27.

Three bolt holes are formed in the connecting cylinder 24, and the outer bolt holes are holes to be fixed by bolts at the inner end of the delivery drive shaft side loose fitting shaft 28 inserted into the inner diameter portion.

The other two holes on the inner side are bolt holes for connecting and fixing the outer end of the delivery drive shaft 3 inserted into the inner diameter portion to the connecting cylindrical body 24.

Next, the structure of the slide roller assembly a and the fine adjustment mechanism B will be described mainly with reference to fig. 6, 7, 8, and 9.

As shown in fig. 3 and 4, a feed roller frame 42 in which the fertilizer feeder 7 and the seed feeder 5 are assembled inside is extended from the rear portion of the position fixing member 36 fixed to the unit mounting rod 12.

The feed roller frame 42 is a rectangular frame-shaped frame in plan view, and inside it, the fertilizer feeder 7 is supported by the feed drive shaft 3 for fertilizer application so as to be engageable and fixable by the engagement and disengagement mechanism D, and the seed feeder 5 is supported by the feed drive shaft 3 for seeding so as to be engageable and fixable by the engagement and disengagement mechanism D.

The fertilizer feeding device 7 and the seed feeding device 5 are opposite in rotation direction but symmetrical in structure, and therefore, they will be described together.

A plurality of adjustment slide side rollers 9 are loosely fitted to the feed drive shaft 3 formed of a hexagonal shaft passing through the center.

The plurality of adjustment slide side rollers 9, a fixed side roller 8, a fine adjustment side roller 11, and a fine adjustment knob 11a, which will be described later, are all made of resin.

The plurality of adjustment sliding side rollers 9 are fitted to the feed drive shaft 3 via a fine adjustment screw shaft 18 having an inner diameter inserted thereinto, and normally, the plurality of adjustment sliding side rollers 9 are rotatable with respect to the rotation of the feed drive shaft 3, and may be configured to slide to the left and right for adjusting the row interval with respect to the unit attachment rod 12 of the seed fertilizer feeding device unit U.

However, when the fertilizing amount and the seeding amount of all the strips or the plurality of strips are adjusted simultaneously by the plurality of position adjusting mechanisms, the feed drive shaft 3 and the plurality of adjusting slide side rollers 9 are integrally fixed by the engaging and disengaging mechanism D, and the plurality of adjusting slide side rollers 9 are configured to be slidable left and right in accordance with the sliding of the feed drive shaft 3 to the left and right adjusting strip intervals.

When the plurality of adjustment slide side rollers 9 are moved leftward and rightward by the plurality of adjustment handle assemblies C, the fixed side rollers 8 supported by the fixed side roller housings 22 outside the delivery roller frame 42 are configured to change the relative positions with respect to the plurality of adjustment slide side rollers 9, without being moved leftward and rightward.

The granular body fitting projection 8b on the inner side of the fixed roller 8 can fit the granular body fitting recess 9a on the outer periphery of the plurality of regulating slide rollers 9 and can change the width of the fitting groove in the right and left direction to adjust the fitting amount from a large amount to a small amount.

A reverse rotation drive gear 8a capable of driving the fertilizer feeding device 7 and the seed feeding device 5 in a reverse rotation direction with respect to each other is protruded from the outer periphery of the fixed side roller 8, and the reverse rotation drive gear 8a for the fertilizer feeding device 7 and the reverse rotation drive gear 8a for the seed feeding device 5, which are provided at the front and rear sides simultaneously, are engaged with each other to thereby drive the fixed side roller 8 with respect to each other.

The fixed-side roller 8 is supported rotatably inside the fixed-side roller housing 22, but is supported so as not to move left and right with respect to the position fixing member 36.

In contrast, the plurality of adjustment slide side rollers 9 are configured such that: the plurality of position adjustment mechanisms can slide left and right with respect to the fixed-side roller 8 (immovable with respect to the position fixing member 36), and thus the plurality of position adjustment mechanisms of the present invention can be configured.

The structure of the plurality of adjustment sliding side rollers 9 is shown in fig. 14, and as shown in fig. 5, the engagement/disengagement body support portion 15 of the engagement/disengagement mechanism D, which constitutes a main part of the present invention, is fixed by bolts to a portion where the plurality of adjustment sliding side rollers 9 slidably protrude outward from the feed roller frame 42.

The engagement/disengagement body support portion 15 is shown in fig. 12, and a bearing body 15d is integrally formed between the left and

right guide plates

15a and 15 b. The feed drive shaft 3 formed of a hexagonal shaft is slidable in the right and left directions inside the bearing body 16d, but the rotational drive force is engaged with and loosely fitted to the plurality of adjustment slide side rollers 9 so as to be transmittable from the feed drive shaft 3 via the engagement/disengagement body support portion 15.

A roller-side fixing plate 15c is fixedly provided at right angles to the inner sides of the left and

right guide plates

15a and 15b, a bolt hole 15e is formed in the roller-side fixing plate 15c, and the engagement/disengagement body support portion 15 is fixed to the outer side surface of the plurality of adjustment slide side rollers 9 by a bolt inserted into the bolt hole 15 e.

A pivot shaft 15f of the shaft engaging member 4 and a pivot shaft 15g of the engaging state maintaining member 6 are bridged between the left and

right guide plates

15a and 15b of the engaging and disengaging body supporting portion 15.

The shape of the engaged state maintaining member 6 is shown in fig. 18.

The engaged state maintaining member 6 has a locking member bent into an obtuse angle ("dogleg") at a central portion thereof, and pivotally supports an engaging operation of the fulcrum crossing spring 16 with the shaft locking member 4 as shown in fig. 19.

The shaft engaging member 4 is shown in fig. 19. In fig. 19, the shaft engaging member 4 is pivotally supported between the left and

right guide plates

15a and 15b of the engaging and disengaging body supporting portion 15 by a pivot shaft 15f of the engaging and disengaging body supporting portion 15, and is rotatable about the feed drive shaft 3. A locking hook 4a is formed at the tip end, and a portion of the locking hook 4a can be locked to one end of the fulcrum cross spring 16 shown in fig. 20.

The engagement state maintaining element 6 is pivotally supported by a pivot shaft 15g of the engagement state maintaining element 6 provided on the engagement/disengagement body supporting portion 15, and the other end of the fulcrum crossing spring 16 is pivotally supported at a position that can go over the fulcrum with the pivot shaft 15g as the fulcrum.

With such a configuration, as shown in fig. 9, the portion of the distal end of the shaft engaging member 4 that presses the resin member 17 is pressed by the outer periphery of the hexagonal delivery drive shaft 3, and the delivery drive shaft 3 and the engagement and disengagement body support portion 15 are maintained in an elastically biased state by the engagement state maintaining member 6 that engages with the fulcrum cross spring 16.

Thereby, the feed drive shaft 3, the engagement/disengagement body support portion 15, and the plurality of adjustment slide side rollers 9 are configured to integrally rotate and slide left and right.

When the pressed state of the portion pressing the resin body 17 is released by the engaging and disengaging mechanism D, the portions of the plurality of regulating slide-side rollers 9 and the slide roller assemblies a can slide left and right with respect to the feed drive shaft 3, and even if the adjustment is performed by the plurality of regulating handles 1, the open portions of the seeds and the slide roller assemblies a of the fertilizer feeding device unit U do not slide left and right to regulate the feed amount.

As shown in fig. 21, the pressing resin body 17 is formed in a cap shape made of an elastic body, and the shaft engaging member 4 is elastically biased so as to be able to reliably maintain a state of pressing and engaging the feed-out drive shaft 3.

When the adjustment is performed by sliding the respective seeds and the strip interval of the fertilizer feeding device unit U to the left and right by the plurality of position adjustment mechanisms, the engaged state maintaining member 6 constituting the engaging and disengaging mechanism D is released, and the engaged state of the engaging and disengaging body supporting portion 15 formed by the pressing resin body 17 and the shaft engaging member 4 and the feeding drive shaft 3 is released.

After the adjustment of the strip pitch is completed, the pressing resin body 17 of the shaft engaging member 4 is again locked by the fulcrum spanning spring 16 and the engaged state maintaining member 6 in a state of pressing the pressing resin body onto the delivery drive shaft 3, and the engaged state maintaining member 6 is configured not to easily come off in a state where the engaged state maintaining member 6 goes over the pivot shaft 15 g.

The engagement and disengagement mechanism D formed in the engagement and disengagement support 15 rotates the plurality of adjustment grips 1 of the plurality of adjustment grip assemblies C in a state where the feed drive shaft 3 and the plurality of adjustment slide side rollers 9 are integrated, moves the feed drive shaft 3 to all of the left and right or all of the plurality of adjustment slide side rollers 9 together, slides to the left and right in a state where the granular material fitting concave portions 9a of the plurality of adjustment slide side rollers 9 are fitted along the granular material fitting convex portions 8b of the fixed side rollers 8, and adjusts the volume of the granular material fitting portion formed by the granular material fitting convex portions 8b and the granular material fitting concave portions 9a by changing the width to the left and right, thereby adjusting the amount of fertilizer or seeds.

However, when the plurality of adjustment handle assemblies C are used to perform the adjustment of the uniform amount, the feed amount of each of the plurality of seed and fertilizer feeding device units U may not be a predetermined value or a predetermined value desired during the operation.

In this case, a fine adjustment mechanism B is provided in a portion of the slide roller assembly a, and each of the plurality of adjustment lever assemblies C can be finely adjusted after adjustment.

In the fine adjustment mechanism B, a fine adjustment screw shaft 18 shown in fig. 17 is fitted to the outer periphery of the feed drive shaft 3, and a fine adjustment side roller 11 constituting the fine adjustment mechanism B is slidably fitted to the outer periphery of the fine adjustment screw shaft 18 by screw movement.

That is, in the granular material fitting recesses 9a of the plurality of adjustment slide side rollers 9, in addition to the granular material fitting protrusions 8B of the fixed side roller 8 described above, the granular material fitting protrusions 11B of the fine adjustment side roller 11 of the fine adjustment mechanism B are also fitted from the side opposite to the granular material fitting protrusions 8B of the fixed side roller 8, which is the left and right inner sides.

That is, the plurality of regulation slide side rollers 9 are slid by adjusting the plurality of regulation handle assemblies C with respect to the granular material fitting projection 8B of the fixed side roller 8, the distance between the plurality of regulation slide side rollers 9 and the fine adjustment side roller 11 is adjusted in the left-right direction by the fine adjustment mechanism B in addition to the left-right width of the fitting groove, and the width of the granular fitting groove on the opposite side to the fixed side roller 8 can be finely adjusted in the left-right direction between the plurality of regulation slide side rollers 9 and the fine adjustment side roller 11.

The fine adjustment side roller 11 is configured as shown in fig. 15, and a fine adjustment knob 11a is fitted to an inner end of the fine adjustment side roller 11. The fine adjustment side roller 11 and the fine adjustment knob 11a are both made of resin, and a resin member that allows both of them to freely rotate is loosely fitted and integrally supported between the fine adjustment side roller 11 and the fine adjustment knob 11 a.

The fine adjustment knob 11a is screwed to an adjustment screw portion 18a provided on the fine adjustment screw shaft 18, and when the fine adjustment knob 11a is rotated, the fine adjustment knob 11a and the fine adjustment side roller 11 can be moved only by a distance of a screw amount in the right-left direction by screwing the adjustment screw portion 18 a.

The fine adjustment knob 11a of the fine adjustment side roller 11 slides to fine adjust the left and right, and the fine adjustment side roller 11 is moved relative to the plurality of adjustment slide side rollers 9 regardless of the state of the plurality of adjustment slide side rollers 9 or the engagement and disengagement body support portion 15 of the slide roller assembly a, whereby the fine adjustment mechanism B can be additionally used to adjust each of the seed and fertilizer feeding device units U.

In addition to the collective adjustment of all or a plurality of the adjustment handles 1 of the adjustment handle assemblies C, the feed amount can be finely adjusted to a desired amount in all or a plurality of the adjustment mechanisms of the roller feeder by finely adjusting the fine adjustment knobs 11a disposed on the respective seed and fertilizer feeder units U and rotating the fine adjustment side rollers 11.

Claims

1. A quantity adjusting mechanism of a roller type delivery device is characterized in that,

a plurality of sliding roller assemblies (A) are fixed on the delivery driving shaft (3), the delivery driving shaft (3) is connected with a plurality of adjusting handles (1) of a plurality of adjusting handle assemblies (C) for adjusting the delivery amount, the delivery driving shaft (3) is slid by the plurality of adjusting handles (1) to adjust the roller opening degree of the plurality of sliding roller assemblies (A),

a fine adjustment mechanism (B) capable of finely adjusting the delivery amount of the slide roller assembly (A) is simultaneously arranged on each of the plurality of slide roller assemblies (A), the fine adjustment mechanism (B) is composed of a fine adjustment side roller (11) and a fine adjustment knob (11a),

in the structure that the plurality of sliding roller assemblies (A) can be adjusted simultaneously, in order to adjust the interval of the adjacent seed and fertilizer delivery device units (U), an engaging and disengaging mechanism (D) which can engage and disengage the delivery driving shaft (3) and the sliding roller assemblies (A) is arranged,

the engaging/disengaging mechanism (D) is composed of a shaft engaging member (4) and an engaging state maintaining member (6), and the shaft engaging member (4) can be fixed in the engaging state by the engaging state maintaining member (6) in a state where the shaft engaging member (4) is in contact with the delivery drive shaft (3),

the engagement state maintaining member (6) rotates around the delivery drive shaft (3) in a state of being engaged with the shaft engaging member (4), and becomes a fulcrum spanning structure spanning a pivot supporting pin between the shaft engaging member (4) and the engagement state maintaining member (6).

2. The roll delivery apparatus as recited in claim 1,

the sliding roller assembly (A) and the plurality of adjustment handle assemblies (C) are mounted on a unit mounting rod (12),

the delivery driving shaft (3) passes through a hexagonal shaft embedding hole of a fertilizing and seeding roller forming the sliding roller assembly body (A),

the other end of the delivery drive shaft (3) is fixed to a delivery drive shaft side free insertion shaft (28) of a plurality of adjustment handle assemblies (C),

a delivery drive shaft side free-fitting shaft (28) fixed to the end of the delivery drive shaft (3) is connected to the plurality of adjustment handle shafts (25) in a free-fitting state,

the rotation of the plurality of adjustment handles (1) rotates a plurality of adjustment handle shafts (25), and slides a delivery drive shaft side free fitting shaft (28) and a delivery drive shaft (3) to perform a plurality of position adjustments.

3. The roll delivery apparatus as recited in claim 2,

a plurality of thread grooves (25a) are carved on a plurality of adjusting handle shafts (25) which are fixed on a plurality of adjusting handles (1) of the plurality of adjusting handle assembly bodies (C) and rotate,

a click mechanism (29) is provided for maintaining the number of the plurality of screw grooves (25a) and the state of rotation of the plurality of adjustment handles (1), whereby the rotational positions of the plurality of adjustment handles (1) can be fixed in a plurality of stages, and fine adjustment can be performed in the same number of stages as the product of the number of screw grooves (25a) and the number of fixed positions of the rotational positions.