JP2020145976A - Grain culm transport device - Google Patents

Abstract

To provide a grain culm transport device in which accumulation of waste in a transport case can be suppressed.SOLUTION: A grain culm transport device comprises: a transport case 20; and a chain 23 with a pawl which is wound around a drive sprocket 22 and a driven sprocket 21. A transport pawl 23a protruding from the transport case 20 on a transport action side transports the grain culm according to rotation of the drive sprocket 22 in an ear transport body 14. The transport case 20 comprises: a first case portion 28 provided on one lateral side of the drive sprocket 22 and the driven sprocket 21; a second case portion 29 provided on the other lateral side of the drive sprocket 22 and the driven sprocket 21, and opened on a non-transport action side; and a covering portion 29b provided between the drive sprocket 22 and the driven sprocket 21 in a rotation locus of the chain 23 with a pawl, and covering an opening between the first case portion 28 and the second case portion 29.SELECTED DRAWING: Figure 6

Description

The present invention relates to a grain culm transporter provided in a combine harvester or the like.

The combine is equipped with a culm transporting device in a reaping section for cutting culms and a culm transport section for transporting threshed culms. For example, Patent Document 1 discloses a grain culm transporting device that transports the tip side of a culm in a culm transporting unit. In the grain transport device of Patent Document 1, a transport case, a drive rotating body and a driven rotating body pivotally supported in the transport case, and a plurality of transport claws are pivotally attached and wound around the drive rotating body and the driven rotating body. A chain with a claw is provided, and at least the transport claw protruding from the transport case on the transport action side is configured to transport the grain in response to the rotational drive of the drive rotating body. Further, the transport case includes a first case portion arranged on one side of the drive rotating body and the driven rotating body, and a second case portion arranged on the other side of the driving rotating body and the driven rotating body. The second case portion is open on the non-transporting action side. According to such a grain culm transport device, debris caught on the claw chain (transport claw) and accumulated debris can be dropped by the open portion of the second case portion, so that the debris can be caught on the claw chain. Accumulation can be suppressed.

Japanese Unexamined Patent Publication No. 2001-35

However, in the grain culm transport device of Patent Document 1, there is a possibility that the debris dropped at the open portion of the second case portion invades and accumulates on the transport action side in the transport case, which hinders the operation of the grain culm transport device. It was.

The present invention has been created for the purpose of solving these problems in view of the above circumstances, and the invention of claim 1 is a transport case and a drive rotation pivotally supported in the transport case. A body and a driven rotating body, a chain having a claw that is pivotally attached to a plurality of transporting claws and wound around the driving rotating body and the driven rotating body, and projecting from the transport case at least on the transporting action side. The transport claw is a grain transport device that transports the grain according to the rotational drive of the drive rotating body, and the transport case is arranged on one side of the drive rotating body and the driven rotating body. One case portion, a second case portion arranged on the other side of the driving rotating body and the driven rotating body, and the non-transporting action side is open, and the driving rotating body in the rotation locus of the clawed chain. And the driven rotating body, a covering portion that covers the opening between the first case portion and the second case portion, a transporting action side end portion of the first case portion, and the second case. It is characterized by including a waste discharge port arranged between the end portion on the transporting action side of the portion and on the downstream side in the transporting direction of both end portions on the transporting action side.
The invention of claim 2 is the grain transport device according to claim 1, wherein the transport action side end of the first case portion and the transport action side end of the second case portion are the claws. A first guide portion for guiding the transport claw is provided on the outer peripheral side of the chain, and the waste discharge port is formed by omitting the downstream side in the transport direction of the first guide portion, and the transport direction of the first guide portion. The downstream end is characterized in that it does not exceed the support shaft position of the drive rotating body or the driven rotating body arranged on the downstream side in the transport direction in the transport direction.
The invention of claim 3 is the grain culm transport device according to claim 1 or 2, wherein the covering portion is formed by bending a part of the second case portion. To do.
The invention of claim 4 is the grain transport device according to any one of claims 1 to 3, wherein the covering portion is close to at least one of the driving rotating body and the driven rotating body. , The driven rotating body and the driven rotating body are integrally provided with a scraper portion for removing dust adhering to at least one of the driven rotating bodies.
The invention of claim 5 is the grain culm transport device according to any one of claims 2 to 4, wherein the transport case has the transport claw on the inner peripheral side or side of the claw chain. The pair of second guide portions are provided with a pair of second guide portions for guiding the first case portion, and the pair of second guide portions extend in a direction approaching each other from the transport action side end portion of the first case portion and the transport action side end portion of the second case portion. It is characterized in that a gap serving as a waste discharge path is provided between the pair of the second guide portions.

According to the invention of claim 1, since the non-transporting action side of the second case portion is open, debris caught on the claw chain (conveying claw) and accumulated debris fall on the open portion of the second case portion. By doing so, it is possible to suppress the catching and accumulation of debris on the claw chain. Further, in the rotation locus of the chain with claws, and between the drive rotating body and the driven rotating body, a covering portion covering the opening between the first case portion and the second case portion is arranged. It is possible to prevent the debris that has fallen in the open portion of the second case portion from entering the transporting action side in the transport case. Further, a waste discharge port is arranged between the transport action side end of the first case portion and the transport action side end of the second case portion, and on the downstream side of both transport action side ends in the transport direction. Therefore, even if dust invades the transporting action side in the transport case, the dust can be discharged from the waste discharge port according to the rotation of the chain with claws.
Further, according to the invention of claim 2, since the waste discharge port is formed by omitting the downstream side of the first guide portion in the transport direction, it is possible to suppress an increase in cost. Further, since the downstream end of the first guide portion in the transport direction does not exceed the support shaft position of the drive rotating body or the driven rotating body arranged on the downstream side in the transport direction in the transport direction, the necessary guide range is secured. A wide waste discharge port can be formed.
Further, according to the invention of claim 3, since the covering portion is formed by bending a part of the second case portion, the structure can be simplified and the cost can be reduced.
Further, according to the invention of claim 4, the covering portion is integrated with a scraper portion that is close to at least one of the driving rotating body and the driven rotating body and removes dust adhering to at least one of the driving rotating body and the driven rotating body. Therefore, it is possible to remove the debris adhering to the driving rotating body and the driven rotating body while suppressing the cost increase.
Further, according to the invention of claim 5, since a gap serving as a waste discharge path is provided between the pair of second guide portions, even if the dust enters the transporting action side in the transport case, the gap is provided. The debris can be guided to the debris discharge port via the debris discharge path between the pair of second guide portions.

It is an overall side view of the combine which concerns on one Embodiment of this invention. It is the whole plan view of the combine. It is a front view of the culm transport device. It is a side view of the culm transfer apparatus. It is a top view of the culm transfer apparatus. It is a perspective view of the tip carrier. It is a side view of the tip carrier. It is an internal side view of the tip carrier. FIG. 7 is a sectional view taken along the line AA of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, 1 is a combine, and the combine 1 has been sorted by a pretreatment section 2 for cutting the grain, a threshing section 3 for threshing and sorting grains from the cut grain. A grain tank 4 for storing grains, a post-processing unit 5 for processing threshed waste, a traveling unit 6 having a pair of left and right crawler traveling bodies, and a control unit 7 on which various operating tools are arranged. , Equipped with.

The threshing section 3 includes a threshing feed chain 8 provided along the side surface portion. The threshing feed chain 8 inherits the grain culms transported to the end of the pretreatment section 2, and rearwardly sandwiches the inherited grain culms with the pinching rails 9 arranged side by side. Transport. At this time, the tip side of the transported grain culm undergoes a rotary threshing action of the handling cylinder (not shown) when passing through the handling chamber (not shown) of the threshing section 3.

Behind the threshing section 3, a culm transport device 11 is arranged so as to be inclined in a plan view. As shown in FIGS. 3 to 5, the culm transport device 11 transports the stock culm side of the culm (threshed culm) transported to the end of the threshing feed chain 8 to the rear. And the tip transporter 14 (grain culm transport device) that transports the tip side of the culm to the rear are assembled in parallel with a predetermined interval in the culm length direction.

The stock source transport body 13 is discharged between a drive sprocket on the transport start end side (not shown) driven by power taken out from the threshing section 3 and a driven sprocket (not shown) provided on the transport end side. The feed chain 17 is wound around, and a sprocket rail 18 is arranged in parallel below the culm feed chain 17. Then, the culm feed chain 17 is conveyed toward the rear post-processing unit 5 while sandwiching the stock source side of the culm conveyed to the end of the threshing feed chain 8 with the sandwiching rail 18. Further, the stock source transport body 13 is provided with an intermediate sprocket 19 (see FIG. 9) that meshes with the intermediate portion of the culm feed chain 17 to take out the power of the tip transport body 14.

As shown in FIGS. 3 to 9, the tip transport body 14 rotates the transport case 20, the driven sprocket 21 (driven rotating body) installed on the transport start end side in the transport case 20, and the driven sprocket 21. The driven sprocket shaft 21a that freely supports the drive sprocket shaft 21a, the drive sprocket 22 (drive rotating body) that is built in the transport end side in the transport case 20, and the drive sprocket 22 that are integrally rotatably supported and interlocked with the intermediate sprocket 19. A drive sprocket shaft 22a to be connected, a chain 23 with a claw wound between both sprockets 21 and 22, a plurality of transport claws 23a pivotally attached to the chain 23 with a claw, and the transport claw. It includes a first guide portion 24 and a second guide portion 25 for standing and guiding the 23a on the transporting action side of the clawed chain 23, and a tension roller 26 provided in an intermediate portion in the transport case 20.

The transport claw 23a that stands up on the transport action side protrudes downward from the protrusion 20c formed at the lower part of the transport case 20, and transports the tip side of the culm to the rear with the transport guide 27. Further, the transport claw 23a that has reached the end of the transport action side circulates on the non-transport action side in a lying posture along the chain with claws 23.

The transport case 20 includes a first case portion 28 arranged on one side of the drive sprocket 22 and the driven sprocket 21, and a second case portion 29 arranged on the other side of the drive sprocket 22 and the driven sprocket 21. Be prepared. More specifically, the first case portion 28 constitutes one side surface of the transport case 20 facing the stock carrier 13, and the second case portion 29 constitutes the other side surface of the transport case 20. are doing.

The first case portion 28 covers one side of the chain body 23b, the drive sprocket 22 and the driven sprocket 21 of the claw chain 23, while the second case portion 29 covers the chain body 23b and the drive sprocket 22 of the claw chain 23. Of the other side of the driven sprocket 21, only the transporting action side is covered, and the non-transporting action side is open. According to such a transport case 20, the claw chain 23 is made by dropping the debris caught on the chain body 23b of the claw chain 23 and the debris accumulated on the transport claw 23a by the open portion 29a of the second case portion 29. It is possible to suppress the catching and accumulation of debris.

The transport case 20 is arranged in the rotation locus of the clawed chain 23 and between the drive sprocket 22 and the driven sprocket 21, and is a covering portion that covers the opening between the first case portion 28 and the second case portion 29. 29b is provided. According to such a transport case 20, the opening between the first case portion 28 and the second case portion 29 caused by opening the non-transporting action side of the second case portion 29 is covered by the cover portion 29b. , It is possible to prevent the dust dropped by the open portion 29a of the second case portion 29 from entering the transporting action side in the transport case 20.

The cover portion 29b is formed by bending a part of the second case portion 29. Specifically, the covering portion 29b is formed by bending the upper end side of the second case portion 29 made of a metal plate material inward. According to such a transport case 20, the structure can be simplified and the cost can be reduced as compared with the case where the cover portion 29b is formed of a separate member.

As shown in FIG. 9, the covering portion 29b is inclined so as to be lower as it is separated from the first case portion 28 in the front view. According to such a transport case 20, the dust that has fallen on the cover portion 29b can be discharged to the outside of the case along the inclination. Further, as shown in FIGS. 3 and 9, the tip carrier 14 of the present embodiment is tilted so that the upper side is separated from the stock carrier 13 and the lower side is closer to the stock carrier 13 in the front view. Therefore, the inclination angle of the covering portion 29b can be substantially increased, and the discharge of the debris that has fallen on the covering portion 29b can be promoted.

As shown in FIG. 6, the covering portion 29b is in close proximity to the driving sprocket 22 and the driven sprocket 21, and integrally includes scraper portions 29c, 29d, and 29e for removing dust adhering to the driving sprocket 22 and the driven sprocket 21. Specifically, the scraper portions 29c and 29d are close to the side surface portion and the outer peripheral portion of the drive sprocket 22 to remove dust adhering to the drive sprocket 22, and the scraper portion 29e is the outer peripheral portion of the driven sprocket 21. By approaching, the dust adhering to the driven sprocket 21 is removed. According to such a transport case 20, it is possible to remove dust adhering to the drive sprocket 22 and the driven sprocket 21 while suppressing an increase in cost.

Further, the transport case 20 is arranged between the transport action side end of the first case portion 28 and the transport action side end of the second case portion 29, and on the downstream side of both transport action side ends in the transport direction. A waste discharge port 30 is provided. According to such a transport case 20, even if dust enters the transporting action side in the transport case 20, the dust can be discharged from the scrap discharge port 30 according to the rotation of the claw-attached chain 23.

As shown in FIGS. 8 and 9, the first guide portion 24 extends in a direction approaching each other from the transport action side end of the first case portion 28 and the transport action side end of the second case portion 29, and has claws. A pair of guide members 24a for standing and guiding the transport claws 23a on the outer peripheral side of the chain 23 are provided. The waste discharge port 30 is formed by omitting the downstream side of the first guide portion 24 in the transport direction. According to such a transport case 20, since the waste discharge port 30 is formed by omitting the downstream side of the first guide portion in the transport direction, it is possible to suppress an increase in cost.

Further, the downstream end of the first guide portion 24 in the transport direction is set so as not to exceed the support shaft position (drive sprocket shaft 22a position) of the drive sprocket 22 arranged on the downstream side in the transport direction in the transport direction. In this way, the waste discharge port 30 can be formed widely while securing the necessary guide range of the first guide portion 24.

As shown in FIGS. 8 and 9, the second guide portion 25 extends in a direction approaching each other from the transport action side end of the first case portion 28 and the transport action side end of the second case portion 29, and has claws. A pair of guide members 25a for standing and guiding the transport claw 23a on the inner peripheral side or the side of the chain 23 are provided. A gap S, which serves as a waste discharge path, is provided between the pair of guide members 25a. According to such a transport case 20, even if dust invades the transporting action side in the transport case 20, the dust is guided to the waste discharge port 30 via the waste discharge path between the pair of guide members 25a. Can be done.

According to the present embodiment configured as described above, the transport case 20, the drive sprocket 22 and the driven sprocket 21 pivotally supported in the transport case 20, and a plurality of transport claws 23a are pivotally attached to the drive sprocket 22 and the drive sprocket 22. A tip carrier that includes a chain with a claw that is wound around a driven sprocket 21, and a transport claw 23a that protrudes from the transport case 20 at least on the transporting action side to transport the grain sprocket in response to the rotational drive of the drive sprocket 22. 14. The transport case 20 is arranged on one side of the drive sprocket 22 and the driven sprocket 21 and on the other side of the drive sprocket 22 and the driven sprocket 21, and has a non-transport action. Since the second case portion 29 whose side is open is provided, the debris caught on the clawed chain 23 and the accumulated debris are dropped by the open portion 29a of the second case portion 29, so that the debris on the clawed chain 23 can be removed. It can suppress catching and accumulation.

Further, the transport case 20 is arranged in the rotation locus of the clawed chain 23 and between the drive sprocket 22 and the driven sprocket 21 and covers the opening between the first case portion 28 and the second case portion 29. Since the covering portion 29b is provided, it is possible to prevent the debris dropped by the opening portion 29a of the second case portion 29 from entering the transporting action side in the transport case 20.

Further, the transport case 20 is arranged between the transport action side end of the first case portion 28 and the transport action side end of the second case portion 29, and on the downstream side of both transport action side ends in the transport direction. Since the waste discharge port 30 is provided, even if the dust enters the transporting action side in the transport case 20, the dust can be discharged from the waste discharge port 30 according to the rotation of the claw-attached chain 23.

Further, the transport action side end portion of the first case portion 28 and the transport action side end portion of the second case portion 29 include a first guide portion 24 for guiding the transport claw 23a on the outer peripheral side of the claw chain 23, and scraps are provided. Since the discharge port 30 is formed by omitting the downstream side of the first guide portion 24 in the transport direction, it is possible to suppress an increase in cost.

Further, since the downstream end of the first guide portion 24 in the transport direction does not exceed the support shaft position of the drive sprocket 22 arranged on the downstream side in the transport direction in the transport direction, the waste discharge port while ensuring the necessary guide range. 30 can be formed widely.

Further, since the covering portion 29b is formed by bending a part of the second case portion 29, the structure can be simplified and the cost can be reduced.

Further, the covering portion 29b is close to the driving sprocket 22 and the driven sprocket 21, and integrally includes scraper portions 29c, 29d, and 29e for removing the debris adhering to the driving rotating body and the driven rotating body, thus increasing the cost. The debris adhering to the driving sprocket 22 and the driven sprocket 21 can be removed while suppressing the pressure.

Further, the transport case 20 includes a pair of second guide portions 25 (guide members 25a) that guide the transport claws 23a on the inner peripheral side or side of the claw-attached chain 23, and the pair of second guide portions 25 are the first. There is a gap S between the pair of second guide portions 25, which extends in a direction approaching each other from the transport action side end of the case portion 28 and the transport action side end of the second case portion 29, and serves as a waste discharge path. Since it is provided, even if dust invades the transporting action side in the transport case 20, the dust can be guided to the scrap discharge port 30 via the scrap discharge path between the pair of second guide portions 25.

The present invention is not limited to the above embodiment, and various modifications and modifications can be made within the scope of the gist of the present invention described in the claims. For example, in the above-described embodiment, the tip carrier of the culm transport device is illustrated as the culm transport device of the present invention, but the present invention can also be applied to the culm transport device of the pretreatment unit.

1 Combine 11 Ejection transporter 13 Stock source carrier 14 Tip carrier 20 Transport case 21 Driven sprocket 22 Driven sprocket 23 Claw chain 23a Transport claw 24 1st guide 25 2nd guide 28 1st case 29 2nd Case part 29a Open part 29b Cover part 29c, 29d, 29e Scraper part 30 Waste discharge port

Claims (5)

With the transport case
The drive rotating body and the driven rotating body axially supported in the transport case,
A plurality of transport claws are pivotally attached, and the driving rotating body and a chain with claws wound around the driven rotating body are provided.
The transport claw protruding from the transport case at least on the transport action side is a grain culm transport device that transports the culm in response to the rotational drive of the drive rotating body.
The transport case is
A first case portion arranged on one side of the driving rotating body and the driven rotating body, and
A second case portion arranged on the other side of the driving rotating body and the driven rotating body and having an open non-transporting action side,
A covering portion which is arranged in the rotation locus of the clawed chain and between the driving rotating body and the driven rotating body and covers an opening between the first case portion and the second case portion.
A waste discharge port arranged between the transport action side end portion of the first case portion and the transport action side end portion of the second case portion and on the downstream side in the transport direction of both transport action side ends. A grain transport device characterized by being provided. The transport action side end of the first case portion and the transport action side end of the second case portion include a first guide portion that guides the transport claw on the outer peripheral side of the claw-attached chain.
The waste discharge port is formed by omitting the downstream side of the first guide portion in the transport direction.
The first aspect of claim 1, wherein the downstream end of the first guide portion in the transport direction does not exceed the support shaft position of the drive rotating body or the driven rotating body arranged on the downstream side in the transport direction. Grain transport device. The culm transport device according to claim 1 or 2, wherein the covering portion is formed by bending a part of the second case portion. The covering portion is characterized by integrally provided with a scraper portion that is close to at least one of the driving rotating body and the driven rotating body and removes dust adhering to at least one of the driving rotating body and the driven rotating body. The culm transport device according to any one of claims 1 to 3. The transport case includes a pair of second guide portions that guide the transport claw on the inner peripheral side or side of the claw-attached chain.
The pair of the second guide portions extend in a direction approaching each other from the transport action side end portion of the first case portion and the transport action side end portion of the second case portion.
The grain culm transport device according to any one of claims 2 to 4, wherein a gap serving as a waste discharge path is provided between the pair of the second guide portions.

Images