JP2020103164A - Thresher - Google Patents

Abstract

To prevent effectively dust spill from between a lower lip plate and a threshing feed chain.SOLUTION: The end 28B on the threshing feed chain side of a lower lip plate 28 is extended to the lower side of a threshing feed chain 32 so as to be overlapped with the threshing feed chain 32 in a plane view, and is extended in the inclined state positioned higher gradually toward the threshing feed chain side. An inclination angle of the end 28B on the threshing feed chain side of the lower lip plate 28 is set so as to become looser gradually toward the threshing feed chain side.SELECTED DRAWING: Figure 7

Description

The present invention relates to a threshing device.

As a threshing device, a handling room into which the tip side part of the cutting culm is inserted, a handling barrel provided in the handling room for threshing the tip side part inserted into the handling room, and a lateral side of the handling room A threshing feed chain that extends along the handling opening formed laterally to the handling room by the lip plate and the upper lip plate, and clamps and conveys the plant base side part of the cutting stem to the rear of the handling room. There are some that are equipped with.
In this type of threshing device, for example, as shown in Patent Document 1, the lower lip plate is extended below the threshing feed chain so that the end on the threshing food chain side overlaps the threshing feed chain in plan view. In addition, some of them are extended in an inclined state in which they are positioned higher toward the threshing feed chain side, so that it is difficult for dust to spill out from the gap between the lower lip plate and the threshing feed chain.

JP, 2016-195608, A

The steeper the inclination angle of the threshing feed chain side end of the lower lip plate (hereinafter, referred to as the feed chain side end of the lower lip plate) is, the more it is placed on the feed chain side end of the lower lip plate. The positioned dust easily flows down into the handling room. However, when adopting the conventional technique, when the inclination angle of the feed chain side end of the lower lip plate is set to a steep angle, the feed chain side end of the lower lip plate extends at a steep angle to the lower part of the threshing feed chain, The gap between the feed chain side end of the lower lip plate and the threshing feed chain becomes wider. That is, it becomes easier for dust to enter the gap between the feed chain side end of the lower lip plate and the threshing feed chain, and to prevent dust from spilling through the gap between the lower lip plate and the threshing feed chain. , The effect of extending the end portion of the lower lip plate on the feed chain side to below the threshing feed chain is weakened.

The present invention is to provide a threshing device capable of effectively preventing spilling of dust from between the lower lip plate and the threshing feed chain.

The threshing device according to the present invention is
The handling chamber into which the tip side portion of the cut stalk is inserted, the handling barrel provided in the handling chamber for threshing the tip side portion inserted into the handling chamber, and the lower lip on the lateral side of the handling chamber. A threshing formed by a plate and an upper lip plate, and a threshing that extends along the handling mouth on the lateral side of the handling room and clamps and conveys the root side part of the cutting stem to the rear of the handling room. A feed chain is provided, and an end of the lower lip plate on the side of the threshing food chain is extended to the lower side of the threshing feed chain so as to overlap with the threshing feed chain in a plan view, and The threshing feed chain side is extended so as to be positioned higher, and the inclination angle of the end portion of the lower lip plate is set to be gentler on the threshing feed chain side.

According to this configuration, the inclination angle of the portion on the threshing feed chain side of the end portion of the lower lip plate on the threshing feed chain side is smaller than the inclination angle of the portion on the handling chamber side of the end portion of the lower lip plate on the threshing feed chain side. The loosening of the lower lip plate facilitates the flow of dust located at the threshing feed chain side end of the lower lip plate into the handling chamber, while the lower lip plate threshing feed chain side end and threshing The gap between the feed chain and the feed chain can be narrowed to make it difficult for dust to enter between the lower lip plate and the threshing feed chain. That is, it is possible to effectively prevent dust from spilling from between the lower lip plate and the threshing feed chain.

In the present invention, it is preferable that a regulation portion is provided that projects upward from the lower lip plate and that regulates tilting of the threshing feed chain by contacting a side portion on the handling chamber side of the threshing feed chain. Is.

When the end of the lower lip plate on the threshing feed chain side entered below the threshing feed chain, the stem culms sandwiched by the threshing feed chain were pulled toward the handling room for threshing by the handling barrel. Then, an operating force for tilting the threshing feed chain toward the handling room is generated, so that the threshing feed chain is likely to tilt toward the handling room. However, according to this configuration, when the threshing feed chain tries to tilt, the regulation unit comes into contact with the end of the threshing feed chain on the handling chamber side, and the tilting of the threshing feed chain is regulated by the regulation unit. Does not tilt, or does not tilt too much and clamps the cut culm firmly.

In the present invention, it is preferable that the restriction portion comes into contact with a pin of the threshing feed chain.

According to this configuration, since the regulating portion comes into contact with the pin corresponding to the core portion of the threshing feed chain, the threshing feed chain is firmly received and supported by the regulating portion, and the tilting regulation by the regulating portion of the threshing feed chain is effectively performed. Be seen.

In the present invention, it is preferable that the restriction portion is provided at a location corresponding to the front portion of the handle.

According to this configuration, a large amount of particles are settled on the tip side of the cutting culm, and a strong operating force in the direction of tilting the threshing feed chain is generated due to threshing on the tip side. The threshing feed chain does not tilt or does not tilt too much while the threshing feed chain is clamped and conveyed because the threshing feed chain is strongly pulled toward the handling room, so that the threshing feed chain is conveyed while it is firmly clamped. To do.

In the present invention, it is preferable that the restriction portions are scattered along the cutting culm conveying direction at the handle.

According to this configuration, the threshing feed chain that nips and conveys the cutting stalks whose tip side is being threshed carries the cutting stalks while receiving the operating force for tilting the threshing feed chain. The tilting of the threshing feed chain is regulated by the regulating part at the places scattered in the transport direction of the threshing feed chain.Thus, the threshing feed chain does not tilt even if the stalks for pinching and carrying are pulled toward the handling room. , It does not tilt so much and conveys the clipped culm while holding it firmly.

It is a left side view showing the whole combine. It is a top view which shows the whole combine. It is a vertical side view showing a threshing device. It is a vertical front view which shows a threshing part. It is a side view which shows a threshing feed chain, a guide member, and a conveyance rail. It is a side view which shows the support structure of a lower lip plate. It is a VII-VII cross section arrow line view of FIG.

An embodiment, which is an example of the present invention, will be described below with reference to the drawings.
In the following description, regarding the traveling machine body of the combine, the direction of the arrow F shown in FIGS. 1 and 2 is “the machine body front”, the direction of the arrow B is the “machine body rear”, and the direction of the arrow U shown in FIG. It is assumed that "upper body", the direction of arrow D is "lower body", the direction of arrow L shown in Fig. 2 is "left body", and the direction of arrow R is "right body".

[About the combine as a whole]
As shown in FIGS. 1 and 2, the combine has a machine body frame 1 configured by connecting a plurality of steel materials such as square pipe materials, and a pair of left and right crawlers mounted on the lower portion of the machine body frame 1. A traveling machine body having the traveling device 2 is provided. A driving unit 4 having a cabin 3 is formed on the right side portion of the front part of the traveling machine body. The reaping and conveying section 5 is provided at the front of the traveling machine body. The reaping and conveying section 5 includes a reaping section 5A provided at the front of the reaping and conveying section 5 and a conveying section 5B provided at the rear of the reaping and conveying section 5. The reaping transport unit 5 is supported on the left lateral side portion of the front part of the traveling body so as to be vertically swingable, and the reaping unit 5A descends to near the field scene, and the reaping unit 5A rises high from the field scene. Ascending/descending operation is in progress. The mowing unit 5A causes the raising device 6 to raise the planting stem culms such as rice and wheat to be planted in a plurality of planting strips, and trims the roots of the planting stem culms with the clipper-type harvesting device 7. The transport unit 5B transports the cut stalks cut by the harvesting unit 5A rearward by the stocker side sandwiching transport device 10a and the tip side locking transport device 10b. The tip-side locking transfer device 10b pulls the tip end side toward the inside of the machine with respect to the stocker-side clamping transfer device 10a at the transfer end part, and the transfer part 5B raises the cutting stems at the transfer end part. Change to a sideways posture. In the rear part of the traveling machine body, a threshing device 8 for performing the threshing process for accepting the cut stalks from the transport section 5B and threshing, and for performing the sorting process for sorting the threshed grains from dust, the threshing grain obtained by the threshing device 8 A grain tank 9 is provided in which the grain is supplied and stored by the fried apparatus 14. The threshing device 8 and the grain tank 9 are provided side by side. To the rear part of the threshing device 8, a shredding device 11 for shredding the threshing discharge straw discharged by the threshing device 8 is connected. The power of the engine (not shown) is applied to the sorting unit 8B (see FIG. 3) of the threshing device 8 and the shredding device 11 across the left lateral side of the threshing device 8 and the left lateral side of the shredding device 11. A power transmission device 13 that transmits power and a lateral cover 12 that covers the power transmission device 13 and the like from the lateral outside are provided. The horizontal cover 12 is composed of a plurality of divided horizontal covers. A grain discharging device 15 for taking out the threshed grains stored in the grain tank 9 is extended from the rear part of the grain tank 9.

[Structure of threshing device]
As shown in FIG. 3, the threshing device 8 includes a threshing part 8A provided on the upper part of the threshing device 8 and a sorting part 8B provided from below the handling chamber 20 of the threshing part 8A to the rear side. I have it.

As shown in FIGS. 3 and 4, the threshing unit 8A includes a handling chamber 20 and a handling barrel 21 rotatably provided in the handling chamber 20. The handling cylinder 21 is configured to be rotationally driven about an axis of a rotation support shaft 21a extending in the front-rear direction of the handling chamber 20. The handling chamber 20 is formed by a front wall 22, a rear wall 23, a top plate 24, and an arcuate receiving net 25 along the handling barrel 21. An inlet 26 is formed at the front of the handling room 20 so that the tip side of the cut culm is inserted into the handling room 20. A discharge port 27 for discharging dust such as threshing straws and broken straws is formed in the rear portion of the handling chamber 20. As shown in FIG. 4, on the left lateral side of the handling chamber 20, a handling port 30 is formed by a lower lip plate 28 and an upper lip plate 29 so as to extend in the front-back direction of the handling chamber 20.

As shown in FIG. 4, the upper lip plate 29 includes a handling port guide portion 29a extending downward from the lower portion of the upper lip plate 29. As shown in FIGS. 4 and 6, the connecting member 31a is connected to the outer surface side of the lower lip plate 28 and the left side wall 31 of the threshing device 8 at a plurality of positions in the front-back direction of the mouth of the lower lip plate 28. There is. The lower lip plate 28 and the connecting member 31a are connected by welding. The left side wall 31 and the connecting member 31a are connected by a connecting bolt. The lower lip plate 28 is fixed to the left side wall 31 via a plurality of connecting members 31a.

As shown in FIGS. 3 and 4, a threshing feed chain 32 and a transport rail 33 along the transport side portion of the threshing feed chain 32 for transporting the cutting stems are provided on the left lateral side of the handling chamber 20. Has been.

As shown in FIG. 5, the threshing feed chain 32 is configured by an endless rotating chain with a protrusion. As shown in FIGS. 4 and 5, the threshing feed chain 32 is provided on a lateral outer side of the handling opening 30 so as to extend in the front-rear direction along the handling opening 30, and below the guide member 34. Lower guide member 35, a free wheel 36 rotatably supported at the front end of the guide member 34, a drive sprocket 37 rotatably and drivably provided behind the guide member 34, and a free wheel. It is wound around a tension wheel 38 provided between the wheel 36 and the lower guide member 35. The threshing feed chain 32 is driven by a drive sprocket 37, and a portion of the threshing feed chain 32 that conveys the cutting culm is conveyed and guided backward by the guide member 34 while being supported by the guide member 34 from below. Then, of the threshing feed chain 32, the return side portion along the return path is guided and moved by the lower guide member 35 while being received and supported from below by the lower guide member 35.

As shown in FIGS. 4 and 5, the transport rail 33 is composed of a plurality of divided rails 33a arranged in the culm transport direction. The adjacent split rails 33a are connected to each other in such a manner that they can be vertically swung relative to each other. Each split rail 33a is supported by a support frame 40 via a support rod 39 whose lower end is connected to the split rail 33a. Each support rod 39 is supported by a support portion 40a of the support frame 40 so as to be vertically slidable. Each support rod 39 is equipped with a spring 41 that biases the divided rail 33a to engage the threshing feed chain 32 by downwardly biasing the support rod 39. The transport rail 33 is supported by a support frame 40 via a plurality of support rods 39 so as to be vertically movable, and is urged by a plurality of springs 41 to engage with a transport side portion of the threshing feed chain 32. The transport rail 33 enables the transport side portion of the threshing feed chain 32 to sandwich and transport the stock side of the cut stalk.

As shown in FIGS. 4 and 7, the guide member 34 has a roller receiving portion 34a for receiving the chain roller 32a of the threshing feed chain 32 from below, and an upper portion connected to the lower surface side of the roller receiving portion 34a. And a frame portion 34b that supports the. The lateral width W1 of the frame portion 34b is set smaller than the lateral width W2 of the roller receiving portion 34a, and one end portion of the roller receiving portion 34a projects from the frame portion 34b toward the handling port 30 and the roller receiving portion 34a and the frame portion 34b. And are connected. The roller receiving portion 34a and the frame portion 34b are connected by welding. As shown in FIGS. 4 and 5, the guide member 34 extends from each of the plurality of connecting members 31a, and the extended end portion is supported by the support arm 42 connected to the frame portion 34b. The guide member 34 is supported by the left side wall 31 via the support arm 42 and the connecting member 31a. As shown in FIGS. 4 and 5, the lower guide member 35 is supported by the guide member 34 via a support rod 43. The support rod 43 extends downward from a side portion of the frame portion 34b facing the lower lip plate 28, and is connected to a lower surface side portion of the lower guide member 35 at an extended end portion.

As shown in FIG. 7, the lower lip plate 28 extends toward the threshing feed chain 32 from a lower portion 28A facing the handling drum 21 in a state of being along the outer peripheral portion of the handling barrel 21 and an upper end portion of the lower portion 28A. And the end portion 28B on the threshing feed chain side (hereinafter, simply referred to as the chain side end portion 28B). As shown in FIGS. 4 and 7, the chain side end portion 28B extends below the threshing feed chain 32 so as to overlap with the threshing feed chain 32 in a plan view, and is located higher on the threshing feed chain side. It is stretched in a tilted state.

The inclination angle of the chain side end portion 28B is set so as to become gentler on the threshing feed chain side. Specifically, as shown in FIG. 7, the shape of the chain-side end portion 28B as viewed in the front-rear direction is a one-step folded shape that is folded at the middle portion C of the chain-side end portion 28B in the lateral width direction. Of the end portion 28B, the inclination angle with respect to the vertical direction (direction indicated by the arrow H) in the extension end side portion 28S located on the side where the threshing feed chain 32 is located with respect to the intermediate portion C is K1, and the chain side end Letting K2 be the inclination angle with respect to the vertical direction (the direction indicated by the arrow H) in the handling body side portion 28K of the portion 28B located on the side where the handling barrel 21 is located with respect to the intermediate portion C, the extension end side portion The inclination angle K1 of 28S is set to be less than the inclination angle K2 of the handle barrel side portion 28K. In the handling barrel side portion 28K, since the inclination angle K2 of the handling barrel side portion 28K is steeper than the inclination angle K1 of the extension end side portion 28S, dust easily flows down into the handling chamber 20 while the extension end portion is extended. The gap Z between the side portion 28S and the threshing feed chain 32 can be narrowed.

In the present embodiment, the shape of the chain side end portion 28B when viewed in the front-back direction is a one-step folded shape, but the shape is not limited to this. For example, a chain-side end portion of a multi-stage folded shape formed in a state of being folded at two or more positions in the lateral width direction, and a step portion closer to the threshing feed chain 32 is formed with a gentler inclination angle with respect to the vertical direction. May be adopted. Further, when viewed from the front-rear direction, the chain side end portion formed in an arc shape is adopted in a state where it extends smoothly from the upper portion of the lower portion 28A to the lower portion of the threshing feed chain 32 without being broken, and is positioned higher toward the threshing feed chain side. You may.

As shown in FIG. 7, the threshing feed chain side end portion 28t of the chain side end portion 28B rises up to the lower side of the roller receiving portion 34a along the frame portion 34b, and is about to spill from the extended end side portion 28S. It is formed to be a stopper that receives the dust that is generated.

As shown in FIGS. 4 and 7, the lower lip plate 28 is provided with a restricting portion 44 that rises from the chain side end portion 28B. As shown in FIG. 6, the restricting portion 44 includes a front portion of the lower lip plate 28 corresponding to the front end side portion of the handling opening 30 and a portion distant from the front portion toward the lower side of the stem-culm transport direction. , And are provided in a state of being scattered. The threshing feed chain 32 is tilted toward the handling chamber 20 by an operating force generated by pulling the cutting stalks held by the threshing feed chain 32 toward the handling chamber side for the threshing process by the handling barrel 21. try to. That is, the end of the threshing feed chain 32 on the side opposite to the handling port tries to float up from the roller receiving portion 34a. However, when the threshing feed chain 32 tries to tilt, the restricting portion 44 comes into contact with the end of the threshing feed chain 32 on the handling chamber side of the pin 32b to receive and support the threshing feed chain 32 from the handling chamber 20 and threshing. The tilting of the feed chain 32 is restricted by the restricting portion 44. The front regulating portion 44 is located in a portion of the transporting side portion of the threshing feed chain 32, which is away from the idler wheel 36 and the drive sprocket 37, in a portion closer to the center in the transport direction, and the tilting of the threshing feed chain 32 is performed. Easy to prevent tilting at the front. The rear side restricting portion 44 is located at a rear portion of the transport side portion of the threshing feed chain 32, which is away from the idler wheel 36 and the drive sprocket 37, and is closer to the center in the transport direction. Prevents tilting at the rear that is easy to do.

In the present embodiment, the restriction portion 44 is formed as a separate member from the lower lip plate 28, and is formed by a restriction portion forming member that is detachably attached to the lower lip plate 28 by a mounting screw. The present invention is not limited to this, and it is possible to employ a restriction portion integrally formed on the lower lip plate 28 by press molding or the like. In the present embodiment, the restriction portions 44 are provided at three locations in the culm conveying direction, but the invention is not limited to this. For example, it may be provided only at the position corresponding to the front end side portion of the handling opening 30. Further, it may be provided in two or less places or in four or more places. In the present embodiment, the regulation unit 44 is configured to contact the pin 32b of the threshing feed chain 32, but the configuration is not limited to this, and a configuration of contacting the plate of the threshing feed chain 32 can be adopted.

In the threshing device 8, the root end of the threshing feed chain 32 receives the root side of the cutting culm whose posture has been changed to the sideways posture by the transport unit 5B, and the accepted root side is directed backward by the threshing feed chain 32. It is pinched and conveyed, and the tip side of the cut stalks is guided to the inlet 26 by the inlet bottom plate 45 (see FIG. 3) and inserted into the starting end portion of the handling chamber 20. The root side of the cutting culm with the tip side inserted into the starting end of the handling room 20 is sandwiched and conveyed by the threshing feed chain 32 along the handling opening 30 toward the rear of the handling room 20, and the tip side is threshed by the handling barrel 21. While being handled, the handling room 20 is transferred to the rear.

At the handle side portion 28K of the lower lip plate 28, dust easily flows into the handling chamber 20, and the gap Z between the extended end side portion 28S of the lower lip plate 28 and the threshing feed chain 32 is narrow. As a result, the end 28t of the lower lip plate 28 serves as a stopper against dust that spills from the lower lip plate 28 to the side opposite to the handling chamber side. It is possible to prevent dust, such as generated dust, from spilling through the gap between the lower lip plate 28 and the threshing feed chain 32. That is, the stocker side portion is nipped and conveyed toward the rear of the handling chamber 20 while preventing dust from adhering to the power transmission device 13 and the like located below the threshing feed chain 32. Even if the threshing feed chain 32 tries to tilt toward the handling room 20 due to the operation force generated by the operation of pulling the cutting culm toward the handling room 20 by the threshing of the tip side portion by the handling barrel 21, The threshing feed chain 32 does not tilt due to the action of each regulating portion 44 that comes into contact with the end of the feed chain 32 on the handling room side, or does not tilt so much and the harvested culm is conveyed while being firmly clamped by the threshing feed chain 32. It The threshing discharge straws are discharged to the rear of the handling chamber 20 from the discharge port 27 of the handling chamber 20 by being sandwiched and conveyed by the threshing feed chain 32.

The threshed grains obtained by the threshing process fall through the leak holes of the receiving net 25 and fall into the sorting section 8B. The falling threshing grains are received by the swing sorting device 46 (see FIG. 3), and the received threshing grains are subjected to swing sorting by the swing sorting device 46 and wind sorting by the sorting wind from the Kara 47 (see FIG. 3). It is separated from dust such as straw dust. The refined grains of the selected threshing grains are conveyed to the outside of the threshing device 8 by the No. 1 screw 48 (see FIG. 3) and supplied to the fried grain device 14. Unprocessed grains of the selected threshing grains are conveyed to the outside of the threshing device 8 by the No. 2 screw 49 (see FIG. 3), and the start end portion of the rocking sorting device 46 is externally supplied by the reducing device 50 (see FIG. 3). Is reduced to.

[Another embodiment]
(1) In the above-described embodiment, the chain side end 28B of one step is adopted to make the inclination angle of the chain side end 28B of the lower lip plate 28 closer to the threshing feed chain side. Not limited to this, it is possible to fold two or more stages and employ an arc-shaped chain side end portion when viewed in the front-back direction.

(2) In the above-described embodiment, an example in which the restricting portion 44 that comes into contact with the pin 32b of the threshing feed chain 32 is adopted is shown, but the present invention is not limited to this. That is, it is possible to employ a restricting portion that comes into contact with the plate 32c below and above the pin 32b.

(3) In the above-described embodiment, the example in which the regulation portion 44 is provided at two locations in the crop transportation direction has been shown, but it may be provided only at one location corresponding to the front portion of the handling opening 30. Further, the cut stalks may be provided at three or more locations in the conveying direction.

INDUSTRIAL APPLICABILITY The present invention is applicable not only to a combine provided with a crawler traveling device but also to a threshing device provided in a combine provided with traveling wheels.

20 Handling Room 28 Lower Lip Plate 28S End of Threshing Feed Chain Side of Lower Lip Plate (End on Chain Side)
29 Upper lip plate 30 Handle 32 Threshing feed chain 44 Regulator

Claims (5)

A handling room where the tip side of the cut stalk is inserted,
A handling cylinder provided in the handling room, for threshing the tip side portion inserted into the handling room,
On the lateral side of the handling room, a handling opening formed by a lower lip plate and an upper lip plate,
A threshing feed chain that extends along the handling opening in the lateral side of the handling room and holds and conveys the root side portion of the cutting stem to the rear of the handling room,
The end portion of the lower lip plate on the side of the threshing food chain is extended to the lower side of the threshing feed chain so as to overlap with the threshing feed chain in a plan view, and is located higher on the side of the threshing feed chain. It is extended in a tilted state,
The threshing device in which the inclination angle of the end portion of the lower lip plate is set to be gentler toward the threshing feed chain side. The threshing according to claim 1, further comprising: a restricting portion that projects upward from the lower lip plate and that restricts tilting of the threshing feed chain by contacting a side portion of the threshing feed chain on the handling chamber side. apparatus. The threshing device according to claim 2, wherein the restricting portion contacts a pin in the threshing feed chain. The threshing device according to claim 2 or 3, wherein the restricting portion is provided at a location corresponding to a front portion of the handling opening. The threshing device according to any one of claims 2 to 4, wherein the restricting portions are scattered along the cutting culm conveying direction at the handling opening.

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