JP2013009653A - Threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent foreign objects from being caught in a feed chain when hand-cropped grain culms are manually supplied to the starting end of the feed chain.SOLUTION: A threshing upper-frame body (34) having a handling chamber (21a) and a holding rod (13) opposite to the upper side of the feed chain (14) is vertically turnably attached to a threshing lower-frame body (35) having the feed chain (14). A biasing means (36) for biasing the threshing upper-frame body (34) toward the rising side is provided. A locking mechanism (9) for locking the threshing upper-frame body (34) in a lowered position against a lifting biasing force by the biasing means (36) is provided. If a safety lever (28) used for the operation of undoing the locked state of the locking mechanism (9) is turned in the conveyance direction (A) of the feed chain (14), the locked state of the locking mechanism (9) is undone, the threshing upper-frame body (34) rises, and a gap forms between the conveyance action area of the feed chain (14) and the holding rod (13).

Description

  The present invention relates to a threshing device provided in a combine or the like.

  In the harvesting work using a self-removing combine harvester, cereals that have been hand-harvested at the four corners of the field are manually thrown into the feed chain and threshed, and this work is called manual handling. .

  In this handling operation, there is a problem that foreign matter is bitten into the feed chain when the cereal is supplied to the feed chain. To solve this problem, a technique exemplified in Patent Document 1 is attempted. It has been.

  That is, with respect to the feed chain that transports the threshing cereal, a feed guide that is provided on the upstream side of the feed chain in the transport direction and switches between the operating position and the non-operating position, and at least laterally outside the feed chain transport start end. And a handling plate provided so that its position can be changed between a non-operation position where the upper end is lower than the feed chain and an operation position where the upper end protrudes above the feed chain. An interlocking mechanism is provided for changing the position of the handling plate to the operating position in accordance with the change of position to the non-operating position where the supply guide is rotated upward to open the upstream side of the feed chain.

  Thus, in order to perform the handling operation, the position of the supply guide is automatically changed to the operating position by changing the position of the supply guide to the non-operating position. When it is attempted to perform the handling operation without switching to, the handling operation is restrained by the handling plate remaining in the non-operating position.

JP 2007-14287 A

In the above-described prior art, if a predetermined preparation operation is not performed at the stage of preparation for starting the handling operation, the handling plate cannot block the supply of the cereal to the feed chain and the handling operation cannot be performed.
Therefore, after performing a predetermined preparatory operation, it becomes possible to manually supply the harvested straw to the start end of the feed chain. It cannot solve the problem that foreign matter is caught between the feed chain and the clamp together with the heel.

  An object of the present invention is to prevent foreign matters from being conveyed while being bitten between a feed chain and a clamp during a handling operation.

The problems of the present invention are solved by the following technical means.
In the invention according to claim 1, the lower threshing frame (35) provided with the feed chain (14), the handling chamber (21a) provided with the handling cylinder (21) and the upper side of the feed chain (14). A threshing upper frame body (34) provided with a pinch (13) opposed to the upper part is attached so as to be rotatable up and down, and an urging means (36) for urging the threshing upper frame body (34) upward is provided. In the threshing device provided with the lock mechanism (9) for fixing the threshing upper frame (34) at the lowered position against the upward biasing force by the biasing means (36), the lock mechanism (9) is locked. The lever (28) for releasing the operation is provided in a portion on the feed chain (14) side of the threshing upper frame (34) or the threshing lower frame (35), and the lever (28) is transported in the feed chain (14). Locking of the lock mechanism (9) when rotated to the lower side The threshing is characterized in that the state is released and the threshing upper frame (34) rises, and a gap is formed between the conveying action area of the feed chain (14) and the pinching (13). A device.

  With this configuration, when performing a hand-working operation to manually supply the grain husks harvested by an operator standing beside the combine to the starting end of the feed chain (14), the feed chain (14) The operator operates the lever (28) to the lower side in the transport direction of the feed chain (14) when a foreign object is caught between the clamps (13) or when a foreign object is about to be caught. Then, the threshing upper frame body (34) is lifted from the threshing lower frame body (35), the pinch (13) is separated from the feed chain (14), and the foreign matter can be pulled away from the feed chain (14) side. It becomes like this.

The invention according to claim 2 is the threshing apparatus according to claim 1, wherein the lever (28) is provided with an arm (28 a) protruding outward from the lever (28).
With this configuration, when the foreign object is drawn into the feed chain (14) and the worker moves in the transport direction, the arm (28a) touches the worker's body and moves the release lever (lever) (28) in the transport direction (A). , And the threshing upper frame (34) is lifted from the threshing lower frame (35), so that the pinch (13) is separated from the feed chain (14) and the foreign matter is pulled away from the feed chain (14). I can do it.

Invention of Claim 3 was set as the threshing apparatus of Claim 1 or Claim 2 which was set as the structure which the drive of a handling cylinder (21) stops with cancellation | release of the locked state of the said lock mechanism (9).
With this configuration, when the release lever (lever) (28) is rotated to release the lock mechanism (9), the drive of the cylinder (21) stops, so that the foreign matter is pulled away from the feed chain (14). It is safe even if it is delayed.

  According to a fourth aspect of the present invention, the driving of the engine (E) is stopped when the lever (28) rotates to the lower side in the conveying direction of the feed chain (14). A threshing apparatus according to claim 2 or claim 3.

  With this configuration, when the release lever (lever) (28) is rotated in the conveying direction A of the feed chain (14) when foreign matter is drawn into the feed chain (14), the rotating parts of the combine stop. It is safe.

  According to the first aspect of the present invention, when a foreign matter is bitten between the feed chain (14) and the pinch (13) or is about to be bitten during the handling operation. In this case, if the operator operates the lever (28), the threshing upper frame (34) is lifted from the threshing lower frame (35), and the pinch (13) is separated from the feed chain (14). Can be pulled away from the feed chain (14). In addition, since the lever (28) is operated to the lower side in the conveying direction of the feed chain (14) at this time, the operability is improved for the worker who is handling the hand.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the operability in an emergency can be improved by the arm (28a) projecting outward from the lever (28).

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the rotation of the handling cylinder (21) is stopped by the operation of the lever (28), so that the foreign matter is damaged. It becomes difficult to come.

  According to the invention of claim 4, in addition to the effects of the invention of claim 1 or claim 2 or claim 3, the drive of the engine (E) is also stopped by the operation of the lever (28). This makes it more difficult to damage foreign objects.

It is a whole side view of a combine. It is a top view of a threshing apparatus. It is an enlarged top view of a threshing apparatus. It is a partial enlarged side view. It is a top view which shows the principal part of a threshing apparatus.

Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
In the present specification, the left side and the right side refer to directions in which the combine moves forward, and the front side and the rear side refer to the forward side and the reverse side of the combine, respectively.

  In the overall view of the combine 1 shown in FIG. 1, the lower part of the traveling frame 2 has a pair of left and right crawlers 4 made of a flexible material such as rubber and formed into an endless belt shape. The crawler 4 is provided with a traveling device 3 configured to be able to travel freely with a slight sinking, a cutting device 6 is mounted on the front of the traveling frame 2, and an engine E and a threshing device 15 are installed on the upper portion of the traveling frame 2. The cockpit 20 and the Glen tank 30 are mounted.

  The reaping device 6 is configured such that the entire reaping device 6 can be lifted and lowered by a telescopic action of a reaping lifting cylinder (not shown), and cereals vegetated on the farm can be harvested at a predetermined height. The weeding tool 7 is disposed at the lower front end of the reaping device 6, the cereal pulling device (not shown) having an inclined shape behind it, and the cutting blade 5 is disposed at the rear bottom thereof. Between the cutting blade 5 and the start end portion of the feed chain 14 of the threshing device 15, a front conveyance device, a supply conveyance device, and the like are arranged so that the cereal can be successively conveyed and the depth of treatment can be adjusted. .

  The operation of the harvesting device 6 of the combine 1 is performed as follows. First, the engine E is started and the main transmission lever 10 is operated so that the combine 1 moves forward. The harvesting lever is operated to engage the harvesting clutch, and the threshing lever is operated to activate the threshing clutch. On the other hand, when the traveling frame 2 travels forward, a mowing operation and a threshing operation are started.

  The grain culm planted in the field is subject to weeding by the weeding tool 7 at the lower front end of the reaping device 6, and is then brought upright if it is in the lying state by the pulling action of the culm. The stock of the cereal reaches the cutting blade 5 and is cut and is scraped into the front conveying device and conveyed rearward, inherited by the supply conveying device and sequentially conveyed upward in the rear portion.

Further, the cereal is inherited from the supply and transport device to the feed chain 14 and the starting end of the nip 13 and supplied to the threshing device 15.
In the threshing device 15, a handling chamber 21 a with a handling cylinder 21 pivoted on the upper side is arranged, a sorting room is provided on the lower side of the handling chamber, and the tip of the harvested cereal rice cake that is supplied and transferred in the conveying direction A is threshed. And sort.

  The tip side of the grain pod supplied to the threshing device 15 is sent to the handling room and threshed, and the grain having the highest specific gravity is conveyed to the Glen tank 30 through the first cereal cylinder 16 and temporarily stored in the Glen tank 30. Is done.

  The remaining cereals that have reached the end of the handling room of the threshing device 15 and have been threshed are transported by being sandwiched between a waste chain and a waste chain that are not shown in the figure, and a rear cutter (not shown) ) Is cut and released to the field.

The grain in the grain tank 30 is conveyed by the vertical auger 18 and the horizontal auger 19 and discharged from the outlet of the horizontal auger 19 to the outside of the combine 1.
FIG. 2 is a front sectional view of the threshing device 15, and a threshing upper frame body 34 that forms a handling chamber 21 a that pivotally supports the handling cylinder 21 is rotatably connected to an upper part of the threshing lower frame body 35 by a hinge 32. The lock mechanism 9 that engages the frame hook 25 of the threshing upper frame body 34 with the lower frame pin 26 on the threshing lower frame body 35 side is provided, and the threshing upper frame body 34 is moved by the lock mechanism 9 to the threshing lower frame body 35. Secure to. A first damper (biasing means) 36 is provided between the threshing lower frame body 35 and the threshing upper frame body 34 to urge the threshing upper frame body 34 upward.

  The frame hook 25 urges the lower support shaft 23 to be engaged with the lower frame pin 26 by the first torsion spring 24. An opening / closing rod 27 is connected to the side opposite to the portion engaged with the lower frame pin 26 of the frame hook 25, and this opening / closing rod 27 protrudes outward from the side surface on the feed chain 14 side across the upper threshing frame 34. The end is bent back.

  A release lever (lever) 28 for pressing the protruding end of the opening / closing rod 27 is provided on the side surface of the threshing upper frame 34 so as to be rotatable by a lever support shaft 29. The release lever 28 has a presser cam portion 28c at one end and an operation portion 28b at the other end. When the lower operation portion 28b is rotated backward, that is, in the conveying direction A of the feed chain 14, the opening / closing rod 27 is pushed inward by the presser cam portion 28c of the release lever 28, and the frame hook 25 is moved to the first torsion. It rotates against the urging force of the spring 24, and the lower frame pin 26 and the frame hook 25 are disengaged. Then, the first damper 36 provided between the threshing lower frame body 35 and the threshing upper frame body 34 extends to slightly lift the threshing upper frame body 34.

  Since the feed chain 14 is mounted on the threshing lower frame body 35 and the clip 13 is mounted on the threshing upper frame body 34, the release lever 28 is released in an emergency when the work tool is about to be pulled into the feed chain 14 together with the cereal basket. When the lower side is rotated rearward, that is, in the transfer direction of the feed chain 14, the lock mechanism 9 is unlocked, the threshing upper frame 34 is lifted upward about the hinge pin 33 of the hinge 32, and the pinch 13 is fed into the feed chain. 14 and away from the clamping force, the operator can pull out the drawn work tool (foreign matter).

  In the operation portion of the release lever 28, a contact arm (arm) 28a protrudes to the side, and an operator's body moving in the transport direction A touches the contact arm 28a and rotates backward.

Note that if the engine E is stopped as the release lever 28 rotates backward, the drive of the feed chain 14 is stopped, so that it is safer.
As another embodiment, an emergency stop switch and a barrel opening / closing button are provided, a hydraulic cylinder that connects the threshing lower frame body 35 and the threshing upper frame body 34 is provided, and when the emergency stop switch is pressed, the hydraulic cylinder extends slightly and the threshing upper frame When the body 34 is slightly opened and the handling cylinder opening / closing button is pressed, the hydraulic cylinder may extend the full stroke to fully open the threshing upper frame 34.

  The handling cylinder cover 10 is pivotally supported on the upper part of the threshing upper frame 34 by the cover shaft 8 coaxial with the hinge pin 32 described above, and the lever plate 16 is mounted on the upper support shaft 11 provided in the front-rear direction above the release lever 28. The cover hook 38 is fixed, and the upper support shaft 11 is urged to rotate by the second torsion spring 12 so that the cover hook 38 engages with the upper frame pin 37 provided on the threshing upper frame body 34. Then, a handle 17 fixed to the lever plate 16 protrudes outward from the side surface of the handling cylinder cover 10, and when the handling handle 17 is pushed upward, the cover hook 38 is detached from the upper frame pin 37 and the handling cylinder cover 10 is opened upward. I can do it.

Alternatively, the handle 17 may be provided with a downward auxiliary handle, and the handle 17 may be rotated upward while grasping and pulling the auxiliary handle.
As another embodiment, a video camera or a thermography for monitoring a worker who is handling a hand is installed on the barrel cover 10 and the worker has moved backward from the hand handling position for a predetermined time by image analysis processing. When judged, the electric threshing clutch is turned off or the drive clutch of the feed chain 14 is turned off to stop the engine E, thereby preventing foreign matter from entering the threshing device 15 caught in the feed chain 14. May be.

  Furthermore, as another embodiment, an emergency stop lever that is pulled out from the storage position during handling is provided, and when a work tool that is held by an operator is caught in the feed chain 14, the body comes into contact with the emergency stop lever. The engine E may be stopped, the electric threshing clutch may be disengaged, or the drive clutch of the feed chain 14 may be disengaged to stop the engine E.

9 Locking mechanism 13 Pinching 14 Feed chain 15 Threshing device 21 Handling cylinder 28 Release lever (lever)
28a Contact arm (arm)
34 Threshing upper frame 35 Threshing lower frame 36 First damper (biasing means)
E engine

Claims (4)

  With respect to the threshing lower frame body (35) provided with the feed chain (14), the handling chamber (21a) provided with the handling cylinder (21) and the jaws (13) facing the upper side of the feed chain (14) The threshing upper frame body (34) provided with the threshing upper frame (34) is attached so as to be rotatable up and down, and urging means (36) for urging the threshing upper frame body (34) to the ascending side is provided. In the threshing apparatus provided with the lock mechanism (9) for fixing the threshing upper frame (34) in the lowered position against the upward biasing force, the lever (28) for releasing the lock state of the lock mechanism (9) is provided. When the threshing upper frame (34) or the threshing lower frame (35) is provided at a site on the feed chain (14) side, and the lever (28) is rotated to the lower side in the conveying direction of the feed chain (14), The locked state of the lock mechanism (9) is released and the upper frame of the threshing (34) increases, the threshing apparatus which is characterized in that a configuration in which a gap is formed between the conveying active area of the feed chain (14) and the clamping 扼杆 (13).   The threshing device according to claim 1, wherein the lever (28) is provided with an arm (28a) projecting outward of the lever (28).   The threshing apparatus according to claim 1 or 2, wherein the driving of the handling cylinder (21) is stopped when the locking mechanism (9) is released.   The threshing according to claim 1, 2 or 3, wherein the driving of the engine (E) is stopped when the lever (28) rotates to the lower side in the conveying direction of the feed chain (14). apparatus.

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