JP2012024008A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rapidly stop a feed chain by the operation of an emergency stopping switch.SOLUTION: A combine harvester equipped with the feed chain (21) for conveying the root parts of reaped grain culms by nipping them between a nipping rod (27) and the feed chain (21), and a threshing part (4) for carrying out the threshing treatment of the reaped grain culms conveyed by the feed chain (21) is constituted as follows. The feed chain (21) is wound on a driving sprocket (23) and a following sprocket (24), and a stopping means (31) for stopping the rotation of the feed chain (21) by engaging with the feed chain (21), and the emergency stopping switch (32) for operating the stopping means (31) are installed in the combine harvester. When the emergency stopping switch (32) is operated, the transmission of the driving force to the driving sprocket (23) is blocked, and the stopping means (31) engages with the feed chain (21) to stop the rotation of the feed chain (21).

Description

  The present invention relates to a combine.

  In the feed chain safety device of the combine, a feed chain clutch capable of switching the feed chain between a drive state and a stop state, a control means for controlling the operation of the feed chain clutch, and a manually operated drive command means are provided, It is known that the feed chain clutch is switched to a stopped state as the feed chain stop condition is satisfied (Patent Document 1).

JP 2003-333920 A

  In the prior art of Patent Document 1, even if the manually operated drive command means is operated and the feed chain clutch is switched to the stopped state, the transmission member from the feed chain clutch to the feed chain rotates with inertial force, There is a problem that the feed chain cannot be stopped quickly.

  In view of the above, the present invention solves such problems and prevents the feed chain from moving by the inertial force by operating the drive command means so as to stop the feed chain quickly.

In order to solve the above problems, the present invention has taken the following technical means.
The invention according to claim 1 is a feed chain (21) for holding and conveying a stock base portion of a harvested cereal rice bran with a pinch (27), and a harvested grain conveyed by the feed chain (21). In the combine provided with the threshing part (4) for threshing the straw, the feed chain (21) is wound around the drive sprocket (23) and the driven sprocket (24) and engaged with the feed chain (21). A stop means (31) for stopping the rotation of the feed chain (21) and an emergency stop switch (32) for operating the stop means (31) are provided. When the emergency stop switch (32) is operated, the drive sprocket The transmission of the driving force to (23) is interrupted, and the stop means (31) engages with the feed chain (21) to stop the rotation of the feed chain (21). It was used as a combine, characterized.

  According to a second aspect of the present invention, the stop means (31) is configured to engage with the loose side drive portion (21b) on the non-conveying side of the feed chain (21), and the emergency stop switch (32) is operated. The combiner according to claim 1, wherein the stop means (31) engages with the loose side drive portion (21b) of the feed chain (21) to stop the rotation of the feed chain (21). It was.

  According to a third aspect of the present invention, a plurality of the emergency stop switches (32) are provided in the vicinity of the feed chain (21), and any one of the plurality of emergency stop switches (32) is operated. Thus, the combine according to claim 1 or 2, wherein the stop means (31) is operated to stop the rotation of the feed chain (21).

  The invention according to claim 4 is characterized in that the plurality of emergency stop switches (32) are connected to the side part of the grain feeder (11) of the cutting and conveying part (5) on the front side part of the machine body and the threshing on the rear side part of the machine body. The combine according to claim 3, wherein the combine is provided at a side portion of the feed chain (21) of the portion (4).

  According to the first aspect of the present invention, when the emergency stop switch (32) is turned on, the transmission of the driving force to the drive sprocket (23) that drives the feed chain (21) is cut off, and the stop means (31) feeds. Since the rotation of the feed chain (21) is stopped by engaging with the chain (21), the threshing part (4) is driven in a state in which the traveling of the combine is stopped, and the hand-cut cereal meal at the end of the feed chain (21 ) And threshing to prevent the movement of the feed chain (21) due to the inertial force when the clothes are hooked on the feed chain (21) due to the carelessness of the operator. it can.

  When the stop means is applied to the tension side drive portion of the feed chain to stop it, when the tension side drive portion of the feed chain moves over the stop means, the distance between the feed chain and the nip is reduced. However, according to the second aspect of the present invention, the stopping means (31) is engaged with the loose side drive portion (21b) of the feed chain (21). Because of the configuration, the feed chain (21) can be quickly stopped without such problems.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, when any one of the plurality of emergency stop switches (32, 32) is turned on, the stopping means (31 ) Engages with the feed chain (21), so that the feed chain (21) can be easily stopped.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 2 above, one of the parts located on the side of the grain conveying device (11) of the cutting and conveying unit (5) on the front side of the machine body. By turning on either the emergency stop switch (32) or the emergency stop switch (32) on the side of the feed chain (21) of the threshing section (4) on the rear side of the machine body, the feed chain (21) Can be stopped, and the operability by workers who work in a wide range can be improved. In addition, at the four corners of the farm and the deformed rice fields where it is difficult to harvest with a combine, the operator manually cuts the uncut grain and puts the grain into the threshing section (4) from the front of the feed chain (21). However, since the threshing part is faced to work from the side, clothes on the threshing part (4) side are sandwiched, and it becomes difficult to operate the emergency stop switch (32) on the side of the threshing part (4). is assumed. Even in such a case, the rotation of the feed chain (21) can be stopped by operating the switch on the cutting and conveying section (5) that allows the body to move freely.

The side view of a combine. The top view of a combine. The side view of the feed chain part of a threshing part. The side view of the feed chain part of a threshing part. The side view of the feed chain part of a threshing part. The front sectional view of the feed chain part of a threshing part. The side view of the feed chain part of a threshing part. The front sectional view of the feed chain part of a threshing part. The front sectional view of the feed chain part of a threshing part. Explanatory drawing of the feed chain part of a threshing part. The side view of a combine. The side view of a combine. The top view of a feed chain transmission mechanism. The side view of a feed chain transmission mechanism.

An embodiment of the present invention will be described with reference to the drawings.
FIGS. 1 and 2 show a combine equipped with the present invention. A left and right traveling crawlers 2 and 2 are arranged below a traveling chassis 1 of the combine, and a control unit 3 is disposed at a front right side on the traveling chassis 1. The grain tank 15 is mounted on the right rear side, the threshing unit 4 is mounted on the left front side, and the waste treatment device 16 is provided behind the threshing unit 4 and the grain tank 15.

  A cutting and conveying unit 5 is provided on the front side of the traveling chassis 1 so as to be movable up and down. The cutting and conveying unit 5 includes a plurality of weed bodies 6,..., A culm raising device 7,..., A cutting blade device 8, a cereal scraping and conveying device (not shown), a cereal collecting and conveying device 10, and a cereal A scissor transport device 11 and the like are provided.

  With the above configuration, when the rotating parts of the combine 1 are driven to start the cutting operation, the traveling crawlers 2 and 2 rotate to start the driving of the combine 1, and the cereals in the field are the weeds on the front side of the cutting and conveying unit 5. 6,... Are guided by the culm raising device 7, while being weeded for each cereal row, and are erected by the lag. The raised cereal is harvested by the cutting blade device 8 and conveyed rearward by the cereal scraping and conveying device (not shown), the cereal collecting and conveying device 10 and the culm conveying device 11, and the feed chain of the threshing unit 4. Takes over to 21. Next, the threshing is carried out by a handling cylinder built in the threshing unit 4 while being conveyed rearward by the feed chain 21, and the grains are cerealed by the first cerealing machine and stored in the glen tank 15. In addition, the threshed waste is transported to the rear waste treatment device 16, shredded, and dropped and discharged.

Next, the threshing cereal conveyance structure of the threshing unit 4 will be described based on FIGS.
The upper part of the threshing unit 4 is provided with a barrel that constitutes the threshing processing part, and the lower part of the threshing part, the first receptacle with the first spiral, the second receptacle with the second spiral, and the swing It is equipped with a dynamic sorting shelf, first cerealing device, and second cerealing device.

  A feed chain 21 is disposed on one side of the threshing section 4, for example, on the upper left side in the traveling direction so as to follow the front-rear direction. The feed chain 21 is wound around the drive sprocket 23 pivoted on the rear side of the feed chain frame 22 and the driven sprocket 24 pivoted on the front side of the feed chain frame 22, and the engine is driven from the engine to the drive sprocket 23. It is configured to transmit power and rotate clockwise. The upper rotation portion of the feed chain 21 is the tension side drive portion 21a, the lower rotation portion is the loose side drive portion 21b, and the front side portion of the loose side drive portion 21b is pulled upward by the lower tension guide rod 25. And is guided to the driven sprocket 24.

  Further, a rear end portion of the sandwiching frame 26 along the front-rear direction is provided on the handling cylinder cover 30 above the feed chain 21 so as to be supported by a left-right axis. Below the pinching frame 26, a large number of pinches 27,... Are provided so as to be refracted by left and right pins 27a,. The lower ends of the hooks 28 are pivotally connected, and the upper parts of the hooks 28 are supported on the hook frame 26 so as to be movable up and down, and springs 29,. It is configured so that the pincers 27,... Are pressed toward the upper side of the feed chain 21, and the threshing pestle is sandwiched between the pinches 27,. It is configured as follows.

  In addition, the upper rotation portion of the feed chain 21 becomes a tension side drive portion 21a and rotates toward the rear side, and the lower rotation portion becomes a loose side drive portion 21b and rotates toward the front side. The drive sprocket 23 is driven to rotate clockwise in FIG.

  And the stop pin 31 is provided in the upper side part of the lower part which is the slack side drive part 21b of the feed chain 21. As shown in FIG. Further, when an emergency stop switch 32 is provided on the front side portion of the barrel cover 30 and the emergency stop switch 32 is turned on, transmission of the driving force to the feed chain 21 is interrupted, and for example, a stop solenoid 33 which is a driving means is operated. The stop pin 31 is pushed downward and protrudes between the connecting pins 21c of the feed chain 21 which are pivotally connected to the chain unit 21d, so that the feed chain 21 is mechanically locked and stopped.

  The means for interrupting the transmission of the driving force to the feed chain 21 is arbitrary, but as shown in FIGS. 13 and 14, the driving force input to the input shaft 45 by belt transmission is transmitted through the intermediate shaft 44 by a plurality of gears. The feed chain drive shaft 43 is driven, and a shifter 46 that rotates together with the intermediate shaft 44 is moved in the axial direction of the intermediate shaft 44 by rotating an arm provided on the shifter shaft 46a. The feed chain drive shaft 43 is driven by transmitting a drive force to the gears on both sides loosely fitted to the feed chain. By holding the shifter 46 at an intermediate position where no power is transmitted to any gear, transmission of the driving force to the driving sprocket 23 is interrupted.

In addition to this configuration, it is possible to employ a configuration in which a threshing clutch that transmits driving force from the engine to the threshing unit 4 is shut off or the engine itself is stopped.
According to the above configuration, when the threshing unit 4 is driven in a state in which the traveling of the combine is stopped, and the hand-harvested pestle at the heel is supplied to the feed chain 21 and threshing, the operator mistakenly puts the arm into the feed chain 21 When the operator turns on the emergency stop switch 32, the driving force is not transmitted to the feed chain 21 and is stopped when the operator turns on the emergency stop switch 32 even when it is sandwiched between the clamps 27 or when clothes are hooked on the feed chain 21. Since the pin 31 protrudes downward and enters between the connecting pins 21c, the feed chain 21 can be immediately stopped. Therefore, the feed chain 21 does not continue to rotate due to the inertial force after the emergency stop switch 32 is operated. improves.

  Further, if the stop pin 31 is applied to the connecting pin 21c of the tension side drive portion 21a that is the upper rotation portion of the feed chain 21 to stop, the tension side drive portion 21a is stopped by the inertia force of the feed chain 21. There is a risk of moving over the pin 31. However, when the stop pin 31 is applied to the connection pin 21c of the loose side drive portion 21b that is the lower rotation portion of the feed chain 21 to stop the connection, the connection pin 21c jumps over the stop pin 31 with inertial force. The feed chain 21 can be surely and quickly stopped without moving.

  Further, when the emergency stop switch 32 is provided, as shown in FIGS. 1 and 2, a front emergency stop switch 32 a is provided on the left side of the grain feeder 11 of the cutting and conveying unit 5, and the front side portion of the handling cylinder cover 30 is provided. A rear emergency stop switch 32b may be provided on the left side, and the stop pin 31 may be operated to stop the feed chain 21 by operating one of the front and rear emergency stop switches 32a and 32b. If comprised in this way, even if an operator's clothes are caught in the feed chain 21, an operator can stop the feed chain 21 easily by operating the emergency stop switches 32a and 32b either before and after. Can be safe.

Next, another embodiment will be described with reference to FIGS.
The rear end portion of the sandwiching frame 26 is pivotally supported on the barrel cover 30 so as to be pivotable up and down about a left and right axis 26a, and pivoted by the expansion and contraction of the hydraulic cylinder 34 on the upper front side portion of the barrel cover 30. The arm 35 is provided, the tip of the arm 35 is pin-connected to the front side portion of the sandwiching frame 26, and the front side portion of the sandwiching frame 26 is configured to be rotatable up and down. Accordingly, the pinch frame 26 is rotated downward to place the pinches 27,... Into the state of pressing and conveying the pestle, or the pinch frame 26 is rotated upward to move the pinches 27,. The cereals are switched to the pressed release state. When the emergency stop switch 32 is turned on, a hydraulic control valve (not shown) is operated to shorten the hydraulic cylinder 34, and the front side portion of the clamping frame 26 is rotated upward so that the feed chain 21 and the clamping chain are clamped. It is configured so that there is a gap between the flanges 27,.

  According to the above configuration, even when clothes are caught on the feed chain 21 due to carelessness of the operator, when the operator turns on the emergency stop switch 32, the front side portion of the pinching frame 26 is rotated upward to feed A gap is formed between the chain 21 and the clamps 27, so that clothes can be easily pulled out and it is safe.

  Next, FIGS. 7 and 8 will be described. .. Of the chain 21 adjacent to the feed chain 21 are pivotally connected to each other by the connecting pins 21c,..., The rollers 37 are fitted to the connecting pins 21c,. I support from. A recess 38a is formed in the central portion of the upper side surface of the chain receiving plate 38 along the front-rear direction to reduce the contact area between the rollers 37 on the feed chain 21 side and the chain receiving plate 38. The noise is reduced.

  Further, as shown in FIG. 9, a portion of the chain receiving plate 38 of the feed chain frame 22 that supports the rollers 37 on the feed chain 21 side from below is formed as a recess 38a, and a synthetic resin plate 39 is provided in the recess 38a. It is also possible to support the central portion of the rollers 37,. If comprised in this way, the surface pressure of the metal part of the rollers 37 and ... by the side of the feed chain 21 can be reduced, and reduction of chain noise can be aimed at.

  Next, FIG. 10 will be described. When the feed chain 21 is configured, the front and rear ends of adjacent left and right chain units 21d,... Are pivotally connected to each other by connecting pins 21c, and the rollers 37 are fitted to the connecting pins 21c. Further, a protrusion 21e for conveying the cereal is formed in the front and rear direction intermediate portion of the right chain unit 21d,... Closer to the inner side of the machine body. The conveyance protrusion 21e is not configured. According to the above configuration, the clothes of the operator are not easily caught on the left chain unit 21d of the feed chain 21, and it is safe.

Next, FIG. 11 will be described.
An oil supply tank 41 is provided at the upper front side of the barrel cover 30, and an oil supply port of the oil supply pipe 42 is exposed above the tension side drive part 21 a that is the upper rotation part of the feed chain 21.

  Thus, the cock (not shown) is opened and closed, and oil is naturally dropped onto the connecting pins 21c,..., Rollers 37,... Of the feed chain 21 to prevent the feed chain 21 from running out of oil and reduce noise. Can be planned.

  Further, when lubricating the feed chain 21 from the oil tank 41, the threshing clutch sensor (not shown) detects the state of engagement of the threshing clutch, and the presence / absence of the harvested grain cocoon for detecting the presence / absence of the harvested grain basket in the harvesting transport unit 5 Only when the detection sensor (not shown) detects that there is a cereal, if it is lubricated by the lubrication command from the control unit (not shown), while reducing the noise of the feed chain 21, the transported culm Oil stains can be prevented.

  As shown in FIG. 12, an oil tank 41 is provided on the left and right sides of the feed chain 21 at the lower front side of the feed chain frame 22, and the oil is applied above the loose side drive portion 21 b that is the lower rotating portion of the feed chain 21. The feed opening of the pipe 42 may be faced and the feed chain 21 may be lubricated to reduce noise while preventing oil shortage.

  Further, when lubricating from the oil supply tank 41 to the slack side drive part 21b which is the lower rotation part of the feed chain 21, the threshing clutch sensor (not shown) detects the engaged state of the threshing clutch, and the cutting and conveying part 5 If the lubrication command from the control unit (not shown) is used to lubricate the feed chain only when the harvested wheat straw detection sensor (not shown) for detecting the presence or absence of the harvested grain straw detects the presence of the grain straw, It is possible to prevent oil contamination of the conveying cereal while reducing the noise of 21.

4 Threshing section 5 Harvesting transport section 11 Grain transporting device 21 Feed chain 21a Tension side drive portion 21b Loose side drive portion 23 Drive sprocket 24 Driven sprocket 27 Clamp 31 Stop means 32 Emergency stop switch

Claims (4)

  A feed chain (21) that clamps and conveys the root part of the harvested cereal rice bran with the pinch (27), and a threshing part that threshs the harvested cereal meal carried by the feed chain (21) ( 4), the feed chain (21) is wound around the drive sprocket (23) and the driven sprocket (24) and engaged with the feed chain (21) to rotate the feed chain (21). A stop means (31) for stopping the operation and an emergency stop switch (32) for operating the stop means (31). When the emergency stop switch (32) is operated, the drive force to the drive sprocket (23) is reduced. The transmission is cut off, and the stop means (31) engages with the feed chain (21) to stop the rotation of the feed chain (21). .   The stop means (31) is configured to engage with a loose side drive portion (21b) which is the non-conveying side of the feed chain (21), and when the emergency stop switch (32) is operated, the stop means (31) The combine according to claim 1, wherein the combiner is configured to engage with the loose side drive portion (21b) of the feed chain (21) to stop the rotation of the feed chain (21).   A plurality of the emergency stop switches (32) are provided in the vicinity of the feed chain (21), and any one of the plurality of emergency stop switches (32) is operated to operate the stop means ( The combine according to claim 1 or 2, wherein 31) is operated to stop the rotation of the feed chain (21).   The plurality of emergency stop switches (32) are connected to a side part of the grain feeder (11) of the cutting and conveying part (5) on the front side of the machine body and a feed chain (4) of the threshing part (4) on the rear side part of the machine body. The combine according to claim 3, wherein the combine is provided at a side portion of 21).

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