JP2013027349A - Thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thresher configured to facilitate removal of foreign matter caught between a feed chain and a retaining rod while manually feeding stalks to the feed chain.SOLUTION: In the thresher, a thresher upper frame body (34) including the retaining rod (13) is mounted to a thresher lower frame body (35) including the feed chain (14) so that the thresher upper frame body is freely vertically turned relative to the thresher lower frame body, and a locking mechanism (9) is provided for holding the thresher upper frame body (34) at a lowered position. The thresher is configured such that a release lever (17) for releasing the locking state of the locking mechanism (9) is provided on the outside of the thresher upper frame body (34), the thresher upper frame body (34) is provided with a lever (28) for lifting the retaining rod (13) relative to the thresher upper frame body (34), at a part below the release lever (17), the lever (28) is operated to lift the retaining rod (13), and a gap is formed between the feed chain (14) and the retaining 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.
The invention according to claim 1 is characterized in that a threshing upper frame body provided with a clamping (13) facing the upper side of the feed chain (14) with respect to a threshing lower frame body (35) including a feed chain (14). In the threshing apparatus provided with a lock mechanism (9) for attaching (34) to be vertically rotatable and holding the threshing upper frame (34) in the lowered position, the lock mechanism (9) is unlocked. A release lever (17) is provided on the outer side of the threshing upper frame (34), and the pinch (13) is threshed at a portion below the release lever (17) in the threshing upper frame (34). A lever (28) for raising the upper frame (34) is provided, and the clamp (13) is raised by the operation of the lever (28), and between the feed chain (14) and the clamp (13). A threshing device characterized in that a gap is formed in

The invention according to claim 2 is the threshing apparatus according to claim 1, wherein the lever (28) is formed with a predetermined length in the grain conveying direction of the feed chain (14). .
Invention of Claim 3 provided the holding means (40) which hold | maintains the said pinch (13) in the raised state, The threshing apparatus of Claim 1 or Claim 2 characterized by the above-mentioned did.

  According to a fourth aspect of the present invention, there is provided a lever rod (28a) for raising the clamp (13) in conjunction with the operation of the lever (28), and the holding means (40) has a clamp ( The threshing device according to claim 3, further comprising a locking hook (50) for holding the lever rod (28a) in a state where 13) is raised.

  According to the fifth aspect of the present invention, the clamp presser rod (42) that supports the clamp (13) is slid vertically on a support bracket (41) fixed to the threshing upper frame (34) side. A spring (43) that is configured to be movable and that urges the clamp (13) toward the feed chain (14) is provided between the support bracket (41) and the clamp (13). In contrast to the base side member (42a) provided on the lever rod (28a) side of the clamping presser rod (42), the clamping presser rod (42) is provided on the clamping (13) side. The tip side member (42b) is supported so as to be movable in the vertical direction, and the base side member (42a) is raised by the operation of the lever (28), so that the base side engagement of the lower part of the base side member (42a) is achieved. Portion (42aa) and distal end side member (42b) upper end side engaging portion (4 bb) and engage, and the threshing apparatus according to claim 4, clamping 扼杆 (13) is configured to be lifted by further proximal member (42a) is increased.

  According to the first aspect of the invention, by operating the release lever (17), the threshing upper frame (34) can be rotated upward, and the inside of the threshing device (15) can be opened. When the foreign object is drawn together with the cereal by the chain (14), the lever (28) is operated to feed the clamping ridge (13) to the feed chain (14) without raising the threshing upper frame (34). It is possible to pull out the foreign material away from the object.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the operator who performs the handling operation on the side portion of the threshing device can easily operate the lever (28).
According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or claim 2, the lever (28) is operated so that the pinch (13) is separated from the feed chain (14). Since the state can be maintained, foreign matters can be easily removed.

According to invention of Claim 4, in addition to the effect by the invention of said Claim 3, it can hold | maintain the clamp (14) in the raised state by simple structure.
According to the fifth aspect of the invention, in addition to the effect of the fourth aspect of the invention, the lever (28) even if the pinch (13) is moved up and down by the cereal conveyed during normal threshing work. When the lever (28) is operated during a handling operation, the pinch (13) is separated from the feed chain (14), so that the pinch (13 ) Can be prevented from being held in a raised state.

It is a whole side view of a combine. It is a top view of a threshing apparatus. It is a partial enlarged side view. It is a partial enlarged front sectional view. It is a partial expanded sectional side view which shows another Example of a holding means. It is a partial expanded side sectional view which shows another Example of a pin clamp rod. It is a driving force transmission diagram of a feed chain. It is a conveyance speed change graph of a feed chain. It is a 1st Example side view of a handling cylinder. It is 1st Example AA sectional drawing of a handling cylinder. It is a 2nd Example side view of a handling cylinder. It is 2nd Example BB sectional drawing of a handling cylinder.

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 having a handling cylinder 21 is arranged on the upper side, a sorting chamber is integrally provided on the lower side of the handling chamber, and the tip of the harvested cereal cocoon that is supplied and transferred in the transport direction A Thresh and screen.

The tip side of the grain pod supplied to the threshing device 15 is sent to the handling room and threshed, and the grain with the highest specific gravity is conveyed to the Glen tank 30 through the first cereal cylinder 16 and temporarily stored.
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 an unillustrated waste chain and a waste chain tip chain (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, wherein the threshing upper frame 34 is pivotally supported by the upper frame shaft 8, and the lever plate 16 and the cover hook 38 are mounted on the upper support shaft 11 provided in the front-rear direction above the lever 28. And the upper support shaft 11 is urged to rotate by the second torsion spring 12 so that the cover hook 38 is engaged with a lower frame pin 37 provided on the threshing lower frame body 35. Then, the release lever 17 fixed to the lever plate 16 protrudes outward from the side surface of the threshing upper frame body 34, and when the release lever 17 is pushed upward, the cover hook 38 is detached from the upper frame pin 37 and the cylinder 36 removes the threshing upper frame. The body 34 can be raised and opened.

FIG. 4 shows the support structure on the front end side of the jaws 13.
On a support bracket 41 provided on the threshing lower frame body 35, a clamp presser rod 42 having a clamp 13 fixed to the lower end is supported so as to be slidable up and down. The clamp pressing rod 42 includes an upper large-diameter portion (base-side member) 42 a and a lower small-diameter portion 42 b (tip-side member), and a small-diameter portion 42 b between the support bracket 41 and the clamp 13. The clamp 13 is repelled downward by a compression spring (spring) 43 that is wound around.

  An inner end of a lever rod 28a pivotally supported by a support pin 46 in the front-rear direction is connected to the upper end of the clamping presser rod 42 by a connecting pin 45, and is moved rearwardly outside the lever rod 28a. When the bent lever 28 is pushed downward, the pinching rod 42 is lifted upward, and the pinch 13 is pulled up against the compression spring 43 along the pinching guide 53 to feed the feed chain 14. Get away from.

  When the clip 13 is pulled up to the upper limit, the holding means 40 engages the lever rod 28a so as to hold the separated state of the clip 13 with respect to the feed chain 14. The holding means 40 in FIG. 4 is configured such that the lever rod 28a is sandwiched between two leaf springs 48, but as shown in FIG. The lever rod 28 a may be locked to the locking hook 50. The latch hook 50 is provided with a release lever 52, and when it is pivoted downward, the lever rod 28a is detached and the clamp 13 is lowered.

  As shown in FIG. 6, the clamp pressing rod 42 is composed of a cylindrical large diameter portion (base portion side member) 42a and a piston-shaped small diameter portion (tip end side member) 42b. If the large-diameter portion 42a does not move and the large-diameter portion 42a is pulled upward greatly, the large-diameter engaging portion (base-side engaging portion) 42aa engages with the small-diameter engaging portion (front-end-side engaging portion) 42bb and the small-diameter portion 42b may be taken up and lifted to pull up the clip 13.

Reference numeral 31 shown in FIG. 4 denotes an emergency stop button, which stops the drive of the feed chain 14 when pressed.
Although not shown in the figure, a handling lever is provided that enables the handling operation when the drive switch of the feed chain 14 is turned on when the threshing lower frame body 35 is extended to the side later. When the handle operating lever is touched and rotated backward, the drive switch of the feed chain 14 may be turned off and the drive of the feed chain 14 may be stopped.

  FIG. 7 shows a drive configuration of the feed chain 14, and the feed chain 14 is driven by the sprocket 54 from the output shaft 64 of the chain drive case 56 via the clutch 59. Two one-way clutches 58 are incorporated in the gear transmission portion in the chain drive case 56, and the input shaft rotation on the high speed rotation side is transmitted to the output shaft 64 among the two transmission input shafts 63a and the constant speed input shaft 63b. I am doing so.

  The speed change input shaft 63a is driven by the cutting belt transmission 57 from the cutting transmission shaft 55, and the constant speed input shaft 63b is driven by the high speed belt transmission 61 and the low speed belt transmission 62 from the threshing counter shaft 60. Either 61a or the low speed clutch 62a is put in and driven.

  As shown in FIG. 8, the feed chain 14 is driven by first inserting the low-speed clutch 62a to start the cutting and threshing operation during low-speed running to drive the feed chain 14 at a constant low speed and eventually increase the cutting belt transmission as the running speed is increased. The output shaft 64 increases in speed due to the transmission of the speed change input shaft 63a from 57, and in high speed running, the low speed clutch 62a is turned off and the high speed clutch 61a is turned on to start the output shaft 64 at a constant high speed.

  9 and 10 show the configuration of the threshing barrel 69, and an angle member 72 bent at right angles to the truncated cone portion 70 and the cylindrical portion 71 is arranged in a cylindrical bowl shape between the front plate 73 and the rear plate 74. FIG. The triangular handle teeth 75 are arranged on the outside of the angle member 72 in a spiral shape with its plate surface inclined at right angles to the axis and in the feed direction. On the truncated conical portion 71 and the cylindrical portion 71, straightening teeth 76, in which wires are projected in a triangular shape, are arranged in a spiral shape. A plate-shaped stirring plate 78 is attached to the handle cylinder central shaft 77 radially between the angle members 72 over substantially the entire length of the handle cylinder.

With the above barrel structure, the main body 80 made of the angle member 72 becomes strong, and the agitation and threshing action of the processed material that has entered the main body is improved.
FIG. 11 and FIG. 12 show still another structure of the handling cylinder. A semicircular ring-shaped handling tooth plate 79 is bolted and nuted to a center disk 83 in which the main body 80 is fixed to the handling cylinder center shaft 77 at regular intervals. In the configuration attached at 82, integral handle teeth 79a are formed at regular intervals on the handle tooth plate 79, and separate handle teeth 81 are attached by bolts and nuts 82 between the integral handle teeth 79a.

  With this configuration of the handling cylinder, maintenance for exchanging the handling tooth plate 79 and the separate handling teeth 81 can be easily performed.

DESCRIPTION OF SYMBOLS 13 Cinch 14 Feed chain 15 Threshing device 17 Release lever 28 Lever 28a Lever rod 34 Threshing upper frame 35 Threshing lower frame 40 Holding means 42 Cinch presser rod 42a Large diameter part (base side member)
42aa Large-diameter engaging portion (base-side engaging portion)
42b Small diameter part (tip side member)
42bb small diameter engagement part (front end side engagement part)
50 Locking hook

Claims (5)

  A threshing upper frame (34) having a pinch (13) facing the upper side of the feed chain (14) can be turned up and down relative to a threshing lower frame (35) having a feed chain (14). In the threshing apparatus provided with the lock mechanism (9) for mounting and holding the threshing upper frame body (34) in the lowered position, the release lever (17) for releasing the lock state of the lock mechanism (9) is set to the threshing upper frame. It is provided on the outer side of the body (34), and the pinch (13) is placed on the threshing upper frame (34) on the lower part of the release lever (17) in the threshing upper frame (34). A lever (28) for raising is provided, and the clamp (13) is raised by operating the lever (28), and a gap is formed between the feed chain (14) and the clamp (13). Threshing apparatus characterized by the above.   The threshing device according to claim 1, wherein the lever (28) is formed to have a predetermined length in the grain conveying direction of the feed chain (14).   The threshing apparatus according to claim 1 or 2, further comprising a holding means (40) for holding the pinch (13) in a raised state.   A lever rod (28a) that raises the pinch (13) in conjunction with the operation of the lever (28) is provided. The holding means (40) has a lever rod in a state in which the pinch (13) is raised. The threshing device according to claim 3, further comprising a locking hook (50) for holding (28a).   A clamp presser rod (42) that supports the clamp (13) is configured to be slidable up and down on a support bracket (41) fixed to the threshing upper frame (34) side, and the support bracket A spring (43) for urging the clamp (13) toward the feed chain (14) is provided between the clamp (13) and the clamp (13), and the clamp presser rod (42 ) With respect to the base side member (42a) provided on the lever rod (28a) side, the tip side member (42b) provided on the pinching (13) side of the pinching rod (42) is moved up and down. The base side member (42a) is lifted by the operation of the lever (28), and the base side engaging portion (42aa) and the distal end side member (42a) below the base side member (42a) are supported. 42b) The upper end side engaging portion (42bb) is engaged, and Threshing device according to claim 4, the base member (42a) is configured to narrow 扼杆 (13) is lifted by rising.

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