WO2019181549A1

WO2019181549A1 - Combine harvester

Info

Publication number: WO2019181549A1
Application number: PCT/JP2019/009245
Authority: WO
Inventors: 大介阿部
Original assignee: ヤンマー株式会社
Priority date: 2018-03-23
Filing date: 2019-03-08
Publication date: 2019-09-26
Also published as: CN111867357A; JP2019165674A; JP6735305B2; KR20200130803A

Abstract

Provided is a combine harvester that improves the transport performance of grain stalks. This combine harvester comprises: a feeder 24 that transports grain stalks backward from a feeder inlet 240a; an auger 23 that collects, at the feeder inlet 240a, grain stalks from a field, the grain stalks having been cut by a cutter 22; and a backflow prevention plate 25 that covers a portion of the feeder inlet 240a and prevents the grain stalks from returning to the auger 23 from the feeder inlet 240a.

Description

Combine

This disclosure relates to a combine.

For example, as shown in Patent Document 1, there is known a combine having a harvesting unit that harvests grain culm in a field, and a feeder that conveys the culm harvested by the harvesting unit backward. The reaping unit includes a cutter that cuts the culm and an auger that collects the culm harvested by the cutter at the feeder entrance. The feeder includes a feeder house in which a feeder inlet is formed, and a conveyor that is disposed in the feeder house and reciprocates in the front-rear direction.

The conveyor conveys the cereals from the front to the rear, but some cereals may adhere to the conveyor and return from the rear to the front. When the cereal returns, when the conveyor folds backward at the front end of the conveyor, the attached cereal may be thrown into the forward auger. As a result, the cereal wraps around the auger, and the lateral feed function of the auger as the lateral feed screw is impaired, and the conveyance performance may be reduced.

Japanese Patent Laid-Open No. 2017-104048

The present disclosure has been made by paying attention to such a problem, and an object thereof is to provide a combine that improves the transportation performance of cereals.

The combine of the present disclosure is:
A feeder that conveys cereal grains backward from the feeder entrance;
An auger that collects grain cereals cut by a cutter at the feeder entrance;
A reverse flow prevention plate that covers a part of the feeder inlet and prevents the cereals from returning from the feeder inlet to the auger.

According to this configuration, since the reverse flow of the cereals to the auger is prevented, it is possible to prevent the cereals from flowing back and entangled with the auger, thereby impairing the conveyance performance by the auger.

Combine left side view Combine right side view Top view of the combine Perspective view showing peripheral structure of auger and feeder Enlarged perspective view showing feeder inlet of feeder Schematic sectional view showing internal structure of auger and feeder Enlarged sectional view showing the connection between the mowing unit and the feeder The perspective view which shows the connection structure of a cutting unit and a feeder

An example of a combine according to the present disclosure will be described. First, the overall structure of the combine will be briefly described. Next, the cutting unit and the feeder will be described.

[Overall structure of combine]
1 to 3 show the left side, right side, and plane of the combine 100 of the present embodiment, respectively. In the figure, the front-rear direction, the left-right direction, and the up-down direction of the combine 100 are indicated by arrows. The combine 100 includes a traveling device 1, a reaping device 2, a threshing device 3, a sorting device 4, a storage device 5, and a power device 6.

The traveling device 1 is provided below the body frame 10. The traveling device 1 includes a transmission 11 and a crawler device 12 provided in a pair of left and right. The transmission 11 transmits the power of the power device 6 mounted on the body frame 10 to the crawler device 12. The crawler device 12 causes the combine 100 to travel in the front-rear direction, and turns the combine 100 in the left-right direction.

The cutting device 2 is provided in front of the traveling device 1. The reaping device 2 includes a reaping unit 20 for reaping cereal grains in a field, and a feeder 24 for conveying the cereals harvested by the reaping unit 20 to the rear. The cutting unit 20 includes a reel 21, a cutter (cutting blade) 22, and an auger (lateral feed screw) 23. The reel 21 guides the cereal straw in the field to the cutter 22 by rotating. The cutter 22 cuts the cereal bowl guided by the reel 21. The auger 23 collects the cereals cut by the cutter 22 at a predetermined position (inlet of the feeder 24). The feeder 24 includes a feeder house 240 and a transfer conveyor 241. The transport conveyor 241 transports the cereals gathered by the auger 23 to the front rotor 33 of the threshing apparatus 3 via the feeder house 240.

The threshing device 3 is provided behind the reaping device 2. The threshing device 3 includes a handling cylinder 31, a receiving net 32 that covers the handling cylinder 31 from below, and a front rotor 33 in the handling chamber. The handling drum 31 threshs the culm by rotating and conveys it backward. The receiving net 32 supports the culm conveyed by the handling cylinder 31 and drops the threshing processed product onto the sorting device 4. The front rotor 33 sends the cereals that the feeder 24 has conveyed to the threshing device 3. Below the handling drum 31, a first conveyor 143 and a second conveyor (not shown), which are screw conveyors for transferring grains, are provided. All of these carry the threshed grain in the horizontal direction.

The sorting device 4 is provided below the threshing device 3. The sorting device 4 includes a rocking device 41 that rocks and sorts the threshing product, and a blower device 42 that sends air toward the rocking device 41. The grain selected by the rocking device 41 is conveyed by the first conveyor 143 and the cereal conveyor 151 and is input to the Glen tank 51 through the input port 153. The blower 42 blows away foreign matters such as sawdust contained in the threshing product. Contaminants such as sawdust are discharged to the outside from a discharge port 45 provided behind the sorting device 4.

The storage device 5 is provided on the right side of the threshing device 3 and the sorting device 4. The threshing device 3 and the sorting device 4 and the storage device 5 are arranged in parallel on the left and right above the body frame 10. The storage device 5 includes a Glen tank 51 for storing grains. The Glen tank 51 stores the grains that have been conveyed from the sorting device 4 through the first conveyor 143 and the cereal conveyor 151. When discharging the grain in the Glen tank 51, the discharge auger 52 is used. The discharge auger 52 is configured to be rotatable in the vertical and horizontal directions, and can discharge the grains to an arbitrary place.

The power unit 6 is provided below the operation unit 13 and in front of the storage unit 5. The power unit 6 includes an engine 61. The engine 61 of the present embodiment is a diesel engine, and converts thermal energy obtained by burning fuel into kinetic energy. More specifically, the engine 61 converts thermal energy obtained by burning fuel into motive power that drives each part such as the traveling device 1. The power unit 6 may be an electric motor that generates power by electricity. The power unit 6 may include both an engine 61 and an electric motor.

The operating unit 13 is provided in front of the glen tank 51 and on the right front portion of the fuselage frame 10. The driver 13 is provided with a driver's seat 14 on which an operator is seated, and a steering handle 15 disposed in front of the driver's seat 14, and various operating tools such as a shift lever, a clutch lever, and switches around them. Is arranged.

[Mowing unit]
As shown in FIG. 4, the cutting unit 20 includes a cutter 22, an auger 23 that is a transverse feed screw arranged behind the cutter 22, and a cutting bottom plate 201 that covers the lower side of the auger 23 and forms a conveying surface of the cereal. And a cutting frame 202. Each member (the cutter 22, the auger 23, the cutting bottom plate 201) constituting the cutting unit 20 is fixed to the cutting frame 202. As shown in FIGS. 3, 4, and 6, the auger 23 includes a rotatable shaft cylinder 23 a and a spiral screw blade 23 b provided on the outer peripheral surface of the shaft cylinder 23 a.

[feeder]
As shown in FIG.6 and FIG.5, the feeder 24 has the feeder house 240 which forms the conveyance space of a grain candy, and the conveyance conveyor 241 arrange | positioned in the feeder house 240. As shown in FIG. The feeder house 240 is formed in a box shape, a feeder inlet 240a is formed at the front, and a feeder outlet 240b is formed at the rear. The feeder inlet 240 a here is a surface connecting edges formed in the feeder house 240. The transport conveyor 241 reciprocates in the front-rear direction and transports the cereals from the front to the rear. Specifically, the transport conveyor 241 includes a pair of front and rear drums 241a, an annular chain 241b stretched between the pair of drums 241a, and a plurality of slats 241c having plate portions attached to the annular chain 241b. . As the arrow 241a and the annular chain 241b rotate, the slats 241c move from the front to the rear, turn back to the front at the rear end of the conveyor 241 and move from the rear to the front. Then, it is folded back at the front end of the conveyor 241. That is, the annular chain 241b and the slat 241c reciprocate in the front-rear direction.

As shown in FIG. 6, in the feeder 24 having the above structure, when the slat 241 c returns from the rear to the front with the cereals attached to the slat 241 c, In some cases, the cereals attached to 241 c are thrown toward the auger 23.

Therefore, in this embodiment, as shown in FIGS. 4, 5, and 6, a backflow prevention plate 25 that covers a part of the feeder inlet 240 a and prevents the cereal from returning from the feeder inlet 240 a to the auger 23 is provided. It has been. The backflow prevention plate 25 covers the upper part of the feeder inlet 240a. As shown in FIG. 6, the backflow prevention plate 25 is disposed on a path Li through which the cereals returned from the rear to the front by the conveyor 241 are put into the auger 23. As shown in the figure, the backflow prevention plate 25 is inclined so that the lower part is further away from the feeder inlet 240a than the upper part. Thereby, the cereal which hits the backflow prevention plate 25 can be guided forward and downward, and the cereals are prevented from being clogged between the backflow prevention plate 25 and the inside of the feeder.

Furthermore, the direction of the backflow prevention plate 25 is set so that the virtual extension line 25v of the backflow prevention plate 25 does not intersect the shaft cylinder 23a of the auger 23. If the orientation of the backflow prevention plate 25 is set in this way, even if the cereal has fallen along the surface of the backflow prevention plate 25, it is possible to prevent the cereal from contacting the shaft cylinder 23 a of the auger 23.

As shown in FIGS. 4, 6, 7, and 8, the cutting unit 20 includes a cutting bottom plate 201 that covers the lower side of the auger 23, and a cutting frame 202 that supports the cutting bottom plate 201. As shown in FIGS. 5, 6, 7, and 8, the feeder 24 includes a feeder bottom surface 240 c that forms a feeder house 240 that forms the feeder inlet 240 a, and a feeder frame 242 that supports the feeder bottom surface 240 c. . As shown in FIGS. 6 and 7, the cutting unit 20 includes a guide plate 26 that extends from the cutting bottom plate 201 to the feeder side and guides the cereal from the cutting bottom plate 201 to the feeder bottom surface 240 c. The guide plate 26 is fixed to the cutting bottom plate 201 by welding, and is a free end where the end on the feeder 24 side is not fixed.

As shown in FIGS. 8 and 7, the cutting unit 20 and the feeder 24 are fastened with bolts through the reinforcing plate 27, with both the

frames

202 and 242 in a state where the cutting frame 202 and the feeder frame 242 face each other. Fixed. The cutting frame 202 and the feeder frame 242 are fixed at two locations via bolts. The reinforcing plate 27 extends along the width direction of the cutting unit 20 and straddles the fixed portion between the cutting frame 202 and the feeder frame 242. The front end of the guide plate 26 on the feeder 24 side is bent downward and is in contact with the upper surface of the reinforcing plate 27. That is, the reinforcing plate 27 supports the free end of the guide plate 26.

As described above, the combine of this embodiment is
A feeder 24 that conveys the cereals backward from the feeder inlet 240a;
An auger 23 that collects grain culms cut by the cutter 22 at a feeder inlet 240a;
A backflow prevention plate 25 that covers a part of the feeder inlet 240a and prevents the cereals from returning from the feeder inlet 240a to the auger 23.

According to this configuration, since the reverse flow of the cereals to the auger 23 is prevented, it is possible to prevent the cereals from flowing back and entangled with the auger 23 to impair the conveyance performance by the auger 23.

In the present embodiment, the feeder 24 has a feeder house 240 in which a feeder inlet 240a is formed, and a conveyor conveyer 241 that is disposed in the feeder house 240 and reciprocates in the front-rear direction. The cereals returned from the rear to the front by the conveyor 241 are arranged on the path Li to be put into the auger 23.

According to this configuration, the backflow prevention plate 25 blocks the cereal returned from the rear to the front by the transport conveyor 241 when it is put into the auger 23, thereby preventing the transport performance of the auger 23 from being impaired. It becomes possible.

In the present embodiment, the backflow prevention plate 25 is inclined such that the lower part is farther forward from the feeder inlet 240a than the upper part.

According to this configuration, the cereals that have hit the backflow prevention plate 25 can be guided forward and downward, and the cereals are prevented from being clogged between the backflow prevention plate 25 and the inside of the feeder (for example, the conveyor 241). It becomes possible to do.

In the present embodiment, the auger 23 has a rotatable shaft cylinder 23a and a helical screw blade 23b provided on the outer peripheral surface of the shaft cylinder 23a, and the virtual extension line 25v of the backflow prevention plate 25 is the axis. The direction of the backflow prevention plate 25 is set so as not to intersect the cylinder 23a.

According to this configuration, even if the cereals fall along the surface of the backflow prevention plate 25, it is possible to prevent the cereals from coming into contact with the shaft cylinder 23a of the auger 23.

In the present embodiment, a cutting frame 202 that supports a cutting bottom plate 201 that covers the lower side of the auger 23;
A feeder frame 242 for supporting a feeder bottom surface 240c constituting a feeder house 240 forming a feeder inlet 240a;
A guide plate 26 extending from the cut bottom plate 201 to the feeder side and guiding the cereal from the cut bottom plate 201 to the feeder bottom surface 240c, and
The cutting frame 202 and the feeder frame 242 are fixed via a reinforcing plate 27,
The front end of the guide plate 26 on the feeder 24 side is bent downward and is in contact with the upper surface of the reinforcing plate 27.

According to this configuration, the cereal can be smoothly conveyed from the cutting bottom plate 201 to the feeder bottom surface 240c via the guide plate 26. The guide plate 26 has a free end at the feeder 24 side, and the reinforcing plate 27 supports the free end, so that the strength can be increased.

The present disclosure is not limited to the embodiment described above, and various improvements and modifications can be made without departing from the spirit of the present disclosure.

20 Cutting unit 201 Cutting bottom plate 202 Cutting frame 22 Cutter 23 Auger

23a Shaft cylinder

23b Screw blade 24 Feeder 240a Feeder inlet 240 Feeder house 240c Feeder bottom surface 242 Feeder frame 241 Conveyor conveyor 25 Backflow prevention plate 25v Virtual extension line 26 Reinforcement plate 27 Guide plate 27 Li path

Claims

A feeder that conveys cereal grains backward from the feeder entrance;
An auger that collects grain cereals cut by a cutter at the feeder entrance;
A reverse flow preventing plate that covers a part of the feeder inlet and prevents the cereals from returning from the feeder inlet to the auger.
The feeder has a feeder house in which the feeder inlet is formed, and a conveyor that is disposed in the feeder house and reciprocates in the front-rear direction.
2. The combine according to claim 1, wherein the backflow prevention plate is disposed on a path through which the cereals returned from the rear to the front by the transport conveyor are put into the auger.
The combine according to claim 1 or 2, wherein the backflow prevention plate is inclined such that the lower part is further forward from the feeder inlet than the upper part.
The auger has a rotatable shaft cylinder, and a helical screw blade provided on the outer peripheral surface of the shaft cylinder,
The combine according to any one of claims 1 to 3, wherein a direction of the backflow prevention plate is set so that a virtual extension line of the backflow prevention plate does not intersect the shaft cylinder.
A cutting frame that supports a cutting bottom plate covering the lower portion of the auger;
A feeder frame that supports the bottom surface of the feeder constituting the feeder house forming the feeder inlet;
A guide plate extending from the cut bottom plate to the feeder side and guiding cereals from the cut bottom plate to the feeder bottom surface,
The cutting frame and the feeder frame are fixed via a reinforcing plate,
The combine according to any one of claims 1 to 4, wherein the guide plate has a feeder-side tip bent downward and in contact with the upper surface of the reinforcing plate.