JP5954477B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  For harvesting of the combine, the feed that feeds the harvested cereal rice cake to the threshing device by the conveying device with the harvesting device equipped at the front while the combine is running, and the harvested cereal rice cake in the field is harvested. Normal mowing and threshing work, in which threshing takes place while taking over to the chain and auxiliary culvert, and auxiliary workers mow the napped cereals at the edge, and the reaped cereals are placed on the feed chain for threshing There is a handling work.

  Conventionally, in order to efficiently perform the handling operation by an auxiliary worker, the handling plate extending above the feed chain during the handling operation is vertically swung to the rear end portion of the frame of the reaping device. Provide an auxiliary pin that extends above the feed chain during normal mowing and threshing work, and opens at the front end of the threshing device to swing up and down at the front end of the threshing device. A configuration (Patent Document 1) has been proposed.

  Also, in order to simplify the combine transmission mechanism and facilitate assembly, a transmission mechanism is provided that branches into a transmission path that transmits the rotation of the engine to the traveling device and a transmission path that transmits to the mowing device and the threshing device (patent) Document 2), a transmission mechanism (Patent Document 3) is provided that branches into a transmission path for transmitting the rotation of the engine to the traveling device and the reaping device and a transmission path for transmission to the threshing device.

JP 2001-258372 A Japanese Patent Laid-Open No. 5-199812 Japanese Patent Laid-Open No. 11-253039

  However, in the configuration of Patent Document 1, when changing from the normal mowing and threshing operation to the handling operation, the operation of swinging the auxiliary clip upward to open the upper part of the feed chain, and the handling plate There is a problem that it is necessary to perform a complicated operation of swinging downward and extending above the feed chain, increasing the work load on the auxiliary worker. In addition, since the auxiliary clamp is located above the feed chain, a large work space cannot be secured above the feed chain. There is a problem that it cannot be performed efficiently.

  The transmission mechanism of Patent Document 2 cuts the drive speed of the feed chain because the rotation transmitted to the feed chain that supplies the culm to the reaping device and the threshing device is output from a common hydraulic continuously variable transmission. There was a problem that it was not possible to set the speed independently of the drive speed of the apparatus, and the supply speed of the cereal to the threshing apparatus could not be optimized. In addition, because the output shaft of the gear box that increases and decreases the rotation of the hydraulic continuously variable transmission and transmits it to the feed chain is projected toward the inside of the fuselage, the parts of the transmission mechanism from the gear box to the feed chain There is a problem that the number of points increases and the installation space cannot be saved.

  Since the transmission mechanism of Patent Document 3 transmits the feed chain from the sorting unit of the threshing device via the continuously variable transmission, there is a problem that the transmission efficiency of the feed chain is low.

  Therefore, the main problem of the present invention is to eliminate such problems.

  The present invention that has solved the above-described problems is as follows.

The invention according to claim 1 includes a threshing device (3) disposed behind the reaping device (4) and a handle (26B) formed on one side of the handling chamber (50) of the threshing device (3). ) Disposed along the upper side of the feed chain (12B), and a clamp (12C) biased toward the feed chain (12B) side. In the combine, a support portion provided at a rear portion of the cutting device (4) is provided with a handling restriction member (42) extending from the rear portion of the cutting device (4) toward the front portion of the pinch (12C). (38A), the front portion of the hand handling restricting member (42) is supported so as to be rotatable up and down around the rotation center, and the hand handling restricting member (42) is rotated in the rearward direction. The rear end portion of the hand-handling restricting member (42) in the transport direction is from the front end portion of the nip (12C). A regulated state in which the supply of hand-held cereals to the feed chain (12B) is restricted on the rear side, and the hand-controlling member (42) is rotated upward to convey the cereals. In the direction, the interval between the rear end portion of the hand-handling restricting member (42) and the front end portion of the pinch (12C) is enlarged, and the supply of the hand-held cereal rice cake to the feed chain (12B) is allowed. It is set as the structure which can be switched to an unregulated state, it extends backward from the rear part of the said mowing apparatus (4) toward the upper side of a feed chain (12B), and pinches a cereal between it and a feed chain (12B). When the auxiliary clip (40) is provided and a bent portion (42A) bent upward is formed at the rear end portion of the hand-handling restricting member (42) so as to be in the restricting state, a side view is obtained. , The rear end portion of the handling restriction member (42) is the front end portion of the nip (12C). In combined, characterized in that the faces on the side, and configured to gap formed between the upper surface and the front end lower surface of the clamping扼杆(12C) of the feed chain (12B) by the bent portion (42A) is closed is there.

According to the second aspect of the present invention, a second frame (49A) is attached to the rear portion of the first frame (4A) on the side of the cutting device (4) provided with the support portion (38A) at the rear end. 4B) is attached to the lower left side, and the second frame (4B) extends upward from the lower left side of the left side, and then bent toward the right side to form a curved part (4C). 4C) is provided with a second support portion (38B) for mounting the switch (46), and the switch (42A) is formed at the distal end portion of the bent portion (42A) formed at the rear end portion of the handling control member (42). 46) The plate (42D) that presses the terminal portion (46A) of 46) is fixed, and the switch (46) is turned on by an operation of rotating the hand handling restricting member (42) upward. 1. The combine described in 1.

According to the first aspect of the present invention, the handling restriction member (42) extending from the rear portion of the cutting device (4) toward the front portion of the pinch (12C) is provided on the cutting device (4). With respect to the support portion (38A) provided at the rear portion, the front portion of the hand handling restricting member (42) is supported so as to be able to turn up and down around the rotation center. Rotating and handling the feed chain (12B) with the rear end portion of the hand-holding restricting member (42) positioned behind the front end portion of the pinch (12C) in the conveying direction of the grain straw The regulation state in which the supply of cereal grains is regulated, and the handling regulation member (42) pivots upward, and the rear end portion of the handling regulation member (42) is sandwiched in the grain feeding direction. Switching to a non-regulated state in which the gap between the front end of the rice cake (12C) is increased and the supply of the hand-held rice cake to the feed chain (12B) is allowed Since it is configured as possible, in the restricted state, the supply of the hand-held cereal meal to the feed chain (12B) can be restricted by the hand-handling restricting member (42), and harvesting is performed while traveling. The safety of the auxiliary worker in the state can be improved. Further, a bent portion (42A) that bends upward is formed at the rear end portion of the hand-handling restricting member (42). 42) The rear end portion faces the lower side of the front end portion of the clamp (12C), and is formed between the upper surface of the feed chain (12B) and the lower surface of the front end portion of the clamp (12C) by the bent portion (42A). Can be closed. In a non-regulated state, a large space for handling work can be secured above the feed chain (12B), and the efficiency of handling work can be increased.

  Moreover, the auxiliary pinch (40) which extends backward from the rear part of the cutting device (4) toward the upper side of the feed chain (12B) and pinches the grain straw with the feed chain (12B) is provided. Therefore, in a state where the harvesting harvest is performed while traveling, the auxiliary rice bran (40) and the feed chain (12B) can pinch and convey the rice cake.

According to the invention described in claim 2, in addition to the effects of the invention described in claim 1, at the tip of the bent portion (42A) formed at the rear end of the hand handling restricting member (42), The switch (46) can be turned on by an operation of fixing the plate (42D) that presses the terminal portion (46A) of the switch (46) and rotating the hand handling restricting member (42) upward .

It is a left view of a combine. It is a top view of a combine. It is a principal part left view of a threshing apparatus. It is principal part sectional drawing of a threshing apparatus. It is a principal part front view of a combine. It is a principal part front view of a combine. It is attachment explanatory drawing of the hydraulic type continuously variable transmission for feed chains. (A) of the hydraulic continuously variable transmission for feed chains is an enlarged sectional view, and (b) is an enlarged side view. It is a principal part transmission mechanism figure of a combine. It is a principal part transmission mechanism figure of another combine. It is explanatory drawing of a transmission gear. It is a connection diagram of a control device. It is explanatory drawing of the 1st drive method of a feed chain. It is explanatory drawing of the 2nd drive method of a feed chain. It is explanatory drawing of the 1st stop method of a feed chain. It is explanatory drawing of the 2nd stop method of a feed chain. It is a principal part left view of a conveying apparatus. It is a principal part left view of a conveying apparatus. It is a left view of the other handle lever. FIG. 10 is a left side view of still another handle lever. It is a front view explaining the arrangement position of a sensor. It is attachment explanatory drawing of the hydraulic continuously variable transmission for other feed chains. (A) of a weed body is a plan view, and (b) is a left side view. It is a principal part top view of a height sensor.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, although the direction is shown and demonstrated for convenience for easy understanding, the configuration is not limited by these.

  As shown in FIGS. 1 and 2, the combine is provided with a traveling device 2 composed of a pair of left and right crawlers for traveling on the soil surface below the body frame 1, and threshing / sorting on the upper left side of the body frame 1. A threshing device 3 is provided, and a reaping device 4 is provided in front of the threshing device 3 to harvest cereal grains in the field. The grain threshed and selected by the threshing device 3 is stored in a Glen tank 5 provided on the right side of the threshing device 3, and the stored grain is discharged to the outside by the discharge cylinder 7. In addition, on the upper right side of the fuselage frame 1, there is provided a cockpit 6 on which a driver is boarded.

<Mowing device>
The reaping device 4 is attached to a reaping frame 30 that is a main frame formed by a reaping frame 28 and a reaping transmission case 29 that is horizontally provided at the front end of the reaping frame 28 in the left-right direction. The base part of the post-cutting frame 28 is attached to a portion that is biased to the right side of the horizontal transmission cylinder 36 that is pivotally supported on the upper part of a pair of left and right suspension stands 35, 35 erected on the body frame 1. .

  The reaping device 4 includes a weed culm 31 for weeding a planted cereal stalk provided at the lower part on the front side, a pulling device 32 for causing a lying planted cereal stalk provided at the rear of the weed culm 31, and a pulling device The cutting blade device 33 that cuts the root of the planted culm provided at the lower part of the rear 32, and the harvesting cereal provided at the rear of the pulling device 32 and the cutting blade device 33 on one side of the threshing device 3 And a conveying device 34 that conveys toward the provided threshing portion conveying device 12. The conveying device 34 includes a stock source conveying device 34 </ b> A that conveys the stock source side of the harvested cereal rice bran, and a tip conveying device 34 </ b> B that conveys the tip side, and from the conveying device 34 to the threshing portion conveying device 12. In order to prevent the fall of the cereal grains when taking over, the inner part (right side part) of the front end part of the threshing part transport apparatus 12 is supported from the rear end part of the transport apparatus 34 to the front end part of the handling chamber 50. A body 37 is provided.

(Mowing ground measuring device)
As shown in FIGS. 23 and 24, in order to prevent the weed basket 31 from being pushed into the soil surface, the lower part of the weed basket 31 is a ground contact height for detecting the height of the weed basket 31 with respect to the soil surface. A detection device 75 is attached. The ground contact height detection device 75 is attached to a support shaft 31A that is mounted so as to be inclined downwardly to the weed ridge 31 through a connecting frame 31C. The support shaft 31A is provided with a torque spring 31 for urging the ground contact height detection device 75 rotated in the left-right direction to the normal position shown in FIG.

  The grounding height detection device 75 attached to the rear end of the connection frame 31B includes a case 76 that houses the sensor and a left-right direction that is attached to the case 76 in order to prevent damage to cables connected to the sensor. Is provided with a detection body 77 attached to a rotating shaft 76C.

  In order to reduce the size of the case 76, a magnetic sensor 76A is used as a sensor, and the magnetic field generated by the rotation of the magnet 76B attached to the right end of the rotary shaft 67C facing the magnetic sensor 76A is used. It is preferred to detect the change. Further, a torque spring 76D is provided on the rotating shaft 67C in the case 76 in order to bias it to the normal position shown in FIG.

  The detection body 77 is fixed on the soil surface by being fixed to a connecting piece 77A having a front portion fixed to the rotating shaft 76C, a rotating shaft 77B extending in the left-right direction at the rear portion of the connecting piece 77A, and a right end portion of the rotating shaft 77B. The moving grounding body 77D is provided.

  In addition, in order to prevent the connecting piece 77A from projecting from the left and right side portions of the weed ridge 31, the front side portion extends rearward, the rear side portion extends rearward to the right side, and then rearward. Extends towards. The rotating shaft 77B is provided with a torque spring 76D for biasing the grounding body 77D rotated in the front-rear direction to the normal position shown in FIG.

As shown in FIGS. 17 and 18, the second auxiliary nip for holding the cereals conveyed from the conveying device 34 to the synchro chain 13 </ b> A with the synchro chain 13 </ b> A at the rear part of the frame (first frame) 4 </ b> A of the reaping device 4. A support shaft 44 extending in the left-right direction for attaching a ridge (auxiliary ridge) 41 is provided, and a grain culm detector 41B made of an elastic member is provided below the second auxiliary ridge 41. .

In addition, at the rear end of the frame 4A of the reaping device 4, a first auxiliary squeeze (auxiliary squeeze) 40 that sandwiches the cereal rice cake inherited from the synchro chain 13A to the feed chain 12B with the feed chain 12B, Switching between a normal reaping and threshing operation and a handling operation in place of the cereal sensor 34C for detecting the amount of displacement caused by the heel sensor 41B coming into contact with the cereal and the mode switch 6B disposed on the barrel cover 50D. A mode switch (switch) to be mounted 46 is mounted with a support portion 38A for mounting the hand-holding restriction plate 42 for operating.

  The second auxiliary clamp 41 can also be attached to the support portion 38A, and the front end portion of the frame 4A is fixed to a connecting frame erected on the left side of the cutting transmission case 29 of the cutting frame 30, The rear end portion is inclined upward from the portion toward the rear portion, and the rear end portion faces the upper front side of the feed chain 12B.

  The rear side portion of the first auxiliary clamp 40 made of a spring plate or the like extends rearward along the upper side of the action-side feed chain 12B, and the rear end portion in the side view is the rear portion of the clamp 12C. It is in the lower side. Since the pinch 12C is biased toward the feed chain 12B, the first auxiliary pinch 40 is pressed against the feed chain 12B by this biasing force to pinch the cereal.

  The width of the first auxiliary clamp 40 in the left-right direction is narrower than the width of the feed chain 12B in the left-right direction. It is placed between the outer plates. The shaft 43 is provided in parallel with the drive shaft 68D for driving the feed chain 12B and the support shaft of the tensioning wheel 17B.

  The first auxiliary clamp 40 secures a wide maintenance / inspection work space after opening the barrel cover 50D and moving the clamp 12C upward during maintenance / inspection work of the feed chain 12B and the like. Therefore, it can be rotated counterclockwise as seen from the left side of the airframe around the shaft 43.

  The front end portion of the second auxiliary clamp 41 made of a spring plate or the like is rotatably attached to the support shaft 44, and the rear side portion extends rearward along the upper side of the working synchro chain 13A. In the side view, the rear end portion faces the lower side of the front portion of the clip 12C. Moreover, the front side part of the 2nd auxiliary pinch 41 is arrange | positioned under the said grain straw sensor 34C.

  The width in the left-right direction of the second auxiliary clamp 41 is formed to be narrower than the width in the horizontal direction of the synchro chain 13A, and the rear side portion of the second auxiliary clamp 41 is in the left-right direction of the synchro chain 13A. It is placed between the outer plates. The support shaft 44 is provided in parallel with the support shaft of the drive sprocket 13C that drives the synchro chain 13A and the support shaft of the extension wheel 13B.

  It should be noted that the second auxiliary clamp 41 is a main body around the support shaft 44 in order to secure a wide maintenance / inspection work space after opening the barrel cover 50D during maintenance / inspection work of the synchro chain 13A or the like. It can be rotated counterclockwise as viewed from the left side of.

  The grain culm sensor 34C is attached to the support portion 38A by a fastening member such as a bolt. The cereal sensor 34C is a sensor that detects the presence or absence of cereals that are transported from the transport device 34 to the synchro chain 13A. That is, when there is cereal straw that is transported from the transporting device 34 to the synchro chain 13A, the rear side part of the cereal grain sensing body 41B is displaced upward, so that the rear side part of the cereal grain sensing body 41B becomes the grain. The heel sensor 34C is pressed. On the other hand, when there is no corn straw transported from the transport device 34 to the synchro chain 13A, the grain sensation detector 41B is not displaced upward, and is separated from the grain sensor 34C at a predetermined interval. ing.

A front end portion of a handling restriction plate (handling restriction member) 42 made of round steel or the like is rotatably attached to a support shaft 43 extending in the left-right direction at the rear portion of the support portion 38A, and the rear side portion. Is extended rearward along the second auxiliary clamp 41 mounted on the working-side synchro chain 13A, and the rear end portion faces the lower side of the front portion of the clamp 12C in a side view. Yes. Further, in the restricted state, the upper surface of the feed chain 12B on the working side in a side view in order to prevent clogging of the cereals conveyed from the conveying device 34 to the synchro chain 13A between the pinch 12C and the synchro chain 13A. The rear end portion of the handling restriction plate 42 is formed with a bent portion 42A that bends upward so as to close the gap formed between the lower surface of the clip 12C and the tip of the bent portion 42A. An operation plate (plate) 42 </ b> D for pressing the terminal portion 46 </ b> A of the mode switch 46 is fixed.

  The left and right width of the hand handling restriction plate 42 is formed to be narrower than the left and right width of the synchro chain 13A, and the rear side portion of the hand handling restriction plate 42 is outside the left and right sides of the synchro chain 13A. It is mounted on the rear side part of the second auxiliary clamp 41 mounted between the plates.

  In order to prevent fluctuations in the restricted and non-regulated postures of the handling restriction plate 42 due to vibrations during travel, etc., and to easily rotate the handling restriction plate 42, the fuselage on the support shaft 43. A plate 42E is provided at the outer end (left end). A rear end portion of an elastic member 42F made of a spring or the like whose front end portion is locked to the front portion of the support portion 38A is locked to the front end portion of the plate 42E. The elastic member 42F is configured to go beyond the so-called fulcrum in the process in which the hand handling restricting plate 42 is switched from one of the restricted state posture and the non-restricted state posture to the other posture. In other words, the elastic member 42F biases the hand handling restriction plate 42 to the side that is in the restricted state posture and the side that is in the non-restricted state posture.

  During normal mowing and threshing work, the handling restriction plate 42 is rotated clockwise about the support shaft 43 and formed between the rear end portion of the frame 4A and the front end portion of the pinch 12C. In the handling state, the handling restriction plate 42 is rotated counterclockwise about the support shaft 43 to sandwich the rear end of the frame 4A. It is set as the non-regulation state which open | releases the space above the threshing part synchro conveyance apparatus 13 formed between the front-end parts of the ridge 12C.

  That is, the rear side portion of the handling handle plate 42 rotates downward about the support shaft 43, and the interval between the rear end portion of the handling handle plate 42 and the front portion of the clamping rod 12A is reduced. Then, the regulated state in which the supply of the handle cereal to the feed chain 12B is regulated, and the rear side portion of the handle regulation plate 42 rotates upward about the support shaft 43, The gap between the rear end portion of the squeeze regulating plate 42 and the front part of the sandwiching trough 12A is enlarged to switch to a non-regulating state in which supply of the hand-held cereal to the feed chain 12B is allowed.

As shown in FIGS. 17 and 18, a lower left end portion of a frame (second frame) 4 </ b > B for attaching a front dustproof cover (dustproof cover) 49 </ b > A is attached to the rear portion of the frame 4 </ b > A of the reaping device 4. Note that the frame 4B extends upward from the lower left end portion, then curves toward the right side and extends toward the right side, and then curves toward the lower side and extends downward. To the lower right end.

A mode switch 46 for switching between a normal mowing threshing operation and a hand handling operation is attached to the bending portion 4C that curves toward the right side of the frame 4B in place of a mode switch 6B disposed on a handling cylinder cover 50D described later. A support portion (second support portion) 38B is mounted.

  The mode switch 46 is a pressure-sensitive sensor that detects switching from a normal mowing and threshing operation to a handling operation mode or the like by contact between the terminal 46A of the mode switch 46 and the operation plate 42D of the handling control plate 42. A displacement sensor or the like can be used. Further, as shown in FIG. 21, in order to prevent the operation failure of the mode switch 46 due to rain or dust, the mode switch 46 is preferably disposed inside the front dustproof cover 49A.

(Other handling restriction plates)
As shown in FIG. 19, in order to easily perform the rotation operation of the hand handling restriction plate 42 by the operator, a gripping plate that is tilted rearward and gripped by the operator on the rear side portion of the hand handling restriction plate 42. (Gripping member) 42B is preferably provided. The front end portion of the first grip plate 42B is fixed to the rear side portion of the handling restriction plate 42, and the rear end portion is fixed to the upper end portion of the bent portion 42A of the handling restriction plate 42. The shape defined by the rear side portion of the gap regulating plate 42, the bent portion 42A, and the first gripping plate 42B is formed in a substantially triangular shape, and the operation plate 42 is not shown.

  As shown in FIG. 20, a second grip plate 42 </ b> C is provided on the rear side portion of the handling handle plate 42, which is tilted upward after gripping by the operator and then extends rearward. It is preferable to fix the operation plate 42D to the rear end portion of the gripping plate 42C. In this case, in order to reduce the weight of the handling restriction plate 42, the bent portion 42A of the rear end portion of the handling restriction plate 42 is not formed, and the operation plate 42 is not illustrated. Yes.

(Auxiliary transfer device)
In order to maintain a good posture of the cereal that is transferred from the transport device 34 to the threshing section transport device 12, an auxiliary transport device is placed on the right side of the upper surface or the lower surface of the support 37 facing the tip transport device 34B. It can also be arranged.

  The auxiliary conveying device is provided with a belt with a lug and a bumped belt that move from the front side to the rear side in order to convey the ear of the cereal that has been taken over from the tip conveying device 34B to the feed chain 12B. In addition, the rotation of a counter shaft 71, which will be described later, is transmitted to the auxiliary conveying device via an output shaft B of a feed chain hydraulic continuously variable transmission (hydraulic continuously variable transmission) 10 so that a belt with lugs is provided. It is preferable to set the moving speed of the same speed as that of the feed chain 12B. In place of the feed chain hydraulic continuously variable transmission (hydraulic continuously variable transmission) 10, a hydromechanical continuously variable transmission configured by combining a hydrostatic continuously variable transmission and a planetary gear is used. Also good.

  As shown in FIGS. 3 to 5, the left suspension base 35 is attached to the upper side of a base 35 </ b> A erected on the body frame 1. A feed chain rotation shaft 35 </ b> B extending in the vertical direction is provided at the front portion on the left side of the suspension base 35 so as to rotatably support the base portion of the lateral transmission frame 35 </ b> C that pivotally supports the left side portion of the lateral transmission cylinder 36. Yes. Further, the horizontal transmission frame 36 is rotated around the feed chain rotation shaft 35B to facilitate maintenance / inspection work of the weed pod 31 and the pulling device 32 of the cutting device 4, etc. 35C is formed in the circular arc shape which has a convex part in the downward direction from the base part to the front-end | tip part in front view. As will be described later, the threshing section transport device 12 for transporting the cereals also rotates about the feed chain rotation shaft 35B.

  The right suspension base 35 is attached to the upper side of a base 35 </ b> A erected on the body frame 1. A support member 35 </ b> D that pivotally supports the right side portion of the lateral transmission cylinder 36 is attached to the upper end portion of the suspension base 35. The support member 35D includes a front support member and a rear support member that are divided into substantially semicircular arcs. When the right side portion of the lateral transmission cylinder 36 is pivotally supported, the lateral transmission cylinder 36 is centered on the feed chain rotation shaft 35B in order to engage the front and rear support members and perform maintenance of the cutting device 4 or the transmission 65. When the cutting device 4 is moved to the left side, the front and rear support members are disengaged and the lateral transmission cylinder 36 is pulled forward. In addition, in order to increase the rigidity against deformation of the left and right suspension bases 35, 35, a connecting frame 35E is installed at an intermediate portion in the vertical direction of the left and right suspension bases 35, 35.

  The rotation of the engine 62 is transmitted to the traveling hydraulic continuously variable transmission 66 via a pulley 66B supported by the input shaft of the traveling hydraulic continuously variable transmission 66, and is transmitted to the traveling hydraulic continuously variable transmission 66. The transmitted rotation is supported by the right end portion of the lateral transmission shaft 36A housed in the lateral transmission cylinder 36 via a pulley (not shown) supported by the output shaft of the traveling hydraulic continuously variable transmission 66. It is transmitted to the pulley 36A and rotates the lateral transmission cylinder 36 and the lateral transmission shaft 36A. The rotation transmitted to the lateral transmission shaft 36 </ b> A is transmitted to the pulling device 32, the cutting blade device 33, the conveying device 34, etc. of the reaping device 4 through transmission shafts (not shown) housed in the frames 27 and 28. Is done.

  The rotation of the engine 62 is transmitted to the traveling hydraulic continuously variable transmission 66 via a pulley 66B supported by the input shaft of the traveling hydraulic continuously variable transmission 66, and the traveling hydraulic continuously variable transmission for traveling. The rotation transmitted to 66 is transmitted to the left and right crawlers of the traveling device 2 via the transmission 65.

<Threshing device>
As shown in FIG. 4, the threshing apparatus 3 includes a handling chamber 50 for threshing the cereal at the upper part of the front side, and a sorting chamber (sorting unit) for sorting the threshed grains below the handling chamber 50. 51 is provided.

  In the handling chamber 50, a handling cylinder 55 having a plurality of teeth is supported on a handling cylinder shaft that is pivotally supported by the front and rear walls 50A and 50C. A cereal supply port 26A is opened at the lower left side of the front wall 50A of the handling chamber 50, a handling port 26B is opened along the handling cylinder 55 at the lower side of the left wall 50B, and the lower left side of the rear wall 50C. The evacuation port 26C is opened. Further, on the left side of the handling chamber 50, a threshing section transporting device 12 is provided in parallel along the handling opening 26B so as to sandwich the cereal stock and transport it backwards. The completed sorghum cereal is taken over by a sewage transporting device 58 provided at the rear of the threshing unit transporting device 12 and further transported rearward, and then cut by a pair of scouring cutters 59 and discharged to the outside. .

  A swing sorting device 52 is provided in the upper part of the sorting chamber 51, and a lower part of the sorting chamber 51 includes a first tang 53 A for blowing air to a sheave in front of the swing sorting device 52, and a swing sorting device. Kernel 53B that collects the spilled grain, the second tang 53C that blows air to the sheave at the rear of the oscillating sorter, and the cereals that are attached to the branch stem that leaks from the sway sorter A second receiving rod 53D for collecting the (second item) is installed in order from the front side. The grain recovered by the first receiving box 53B is transferred to the Glen tank 5 by the first transfer spiral 53b installed in the first receiving box 53B, and the grains and the like recovered by the second receiving box 53D are two. It is transferred to the second processing chamber by a second transfer spiral 53d built in the number receiving basket 53D.

  The rear part on the right side of the handling chamber 50 communicates with the dust treatment chamber. Inside the dust treatment chamber, a dust treatment cylinder 57 having screw blades on its outer peripheral surface is pivotally supported in the front-rear direction. A second processing chamber for processing and reducing the second product is provided on the front side of the chamber. In the second processing chamber, a second processing cylinder 56 having intermittent spiral blades on the outer peripheral surface is pivotally supported. In addition, a dust exhaust fan 48 is provided on the upper rear side of the oscillating sorting shelf to suck and discharge the waste generated during threshing and sorting.

<Threshing part conveyance device>
As shown in FIGS. 3, 6 and the like, the threshing section transporting device 12 includes a clamping rod 12A located on the upper side and a feed chain 12B located on the lower side. The clamping rod 12A includes the clamping rod 12C urged toward the feed chain 12B by the urging means 14 such as a spring with respect to the handling cylinder cover 50D of the handling chamber 50. The feed chain 12B is wound around and driven by tensioning wheels 17B and 17B rotatably supported on the front and rear ends of the upper chain rail 18A, and a drive sprocket 17A provided between the tensioning wheels 17B and 17B. Is an endless chain. The working side feed chain 12B mounted on the upper chain rail 18A clamps the holding basket 12A and the grain base in the process of moving backward from the front side. In addition, in order to prevent the cereals to be conveyed from being wound around the end portion of the feed chain 12B, the rear tensioning wheel 17B uses an idle sprocket provided with anti-winding plates 17D on both sides. Is preferred.

  On the side surface of the barrel cover 50D, the auxiliary worker who is performing the handling operation can easily adjust the speed VF1 of the feed chain 12B during the handling operation to improve workability. A dial 6A is provided. Further, in order to efficiently adjust the speed VF of the feed chain 12B in accordance with the amount of the handle culm, the periphery of the rear side auxiliary nip 43 on which the speed control dial 6A is handled and the culm is mounted. The speed control dial 6A can also be arranged on the side panel of the cockpit 6 in order to efficiently assist an assistant worker who is not familiar with the pilot seated in the cockpit 6.

  In addition to the speed control dial 6A, or instead of the speed control dial 6A, a speed control pedal 45 for adjusting the speed VF of the feed chain 12B during the handling operation is provided on the machine body frame 1 in front of the threshing device 3. You can also.

  In a side view, the sandwiching trough 12A is provided with a slope that rises rearward along the handling opening 26B from the grain supply port 26A to the discharge opening 26C of the handling chamber 50. The upper chain rail 18A on which the feed chain 12B on the working side is mounted tilts rearward and upward from the front front end of the horizontal shaft transmission cylinder 36 and then gently tilts rearward and forward of the grain supply port 26A of the handling chamber 50. After arriving, it faces and rises backward along the handling opening 26B from the grain supply port 26A of the handling chamber 50 to the discharge opening 26C, facing the holding bowl 12A. Then, after extending horizontally from the discharge port 26C, it tilts backward and reaches the rear end behind the front end of the tip conveying device 34A. In order to easily change the length in the front-rear direction of the threshing section conveying device 12 in accordance with the change in the number of cutting lines of the mowing device 4, the upper chain rail 18A preferably has a split structure that can be divided in the front-rear direction. is there.

  The lower chain rail 18B on which the non-working-side feed chain 12B is mounted is inclined upward from the front end above the counter shaft 71 that transmits the rotation of the engine 62 to the drive sprocket 17A and reaches the rear end. The rear end of the lower chain rail 18B is provided in front of the rear extending wheel 17B and below the discharge port 26C.

  A guide 18D for guiding the non-operating feed chain 12B to a drive sprocket 17A provided below the front end of the lower chain rail 18B is detachably attached to the front end of the lower chain rail 18B. . The guide 18D is provided above the counter shaft 71 and has a substantially quarter circle shape. In addition, it is preferable to provide a cover (not shown) above the guide 18D in order to prevent the counter shaft 71 and the like from being soiled by dropping of oil or the like.

  On the lower side of the lower chain rail 18B, an upper chain rail 18A and a support frame 19 that supports the lower chain rail 18B are provided by a rail connecting plate 18C. That is, the feed chain 12 </ b> B is supported by the support frame 19. In addition, the upper chain rail 18A and the connecting plate 18E connected to the lower chain rail 18B prevent the sawdust falling from the feed chain 12B being transported from the rice straw from dropping into the drive unit of the sorting chamber 51. A sawdust guide plate (not shown) is attached.

  As shown in FIGS. 3 and 5, the front end of the support frame 19 is attached to a plate 19A attached to a bracket 19B with bolts or the like, and the bracket 19B is a feed chain rotating shaft provided on the left suspension base 35. It is rotatably attached to the upper and lower ends of 35B. When the feed chain 12B is rotated around the feed chain rotating shaft 35B, the feed chain rotating shaft 35B is wound around the feed chain 12B in order to reduce the intrusion of the front end portion of the feed chain 12B into the machine body. It is erected near the rear side of the front tensioning wheel 17B.

  In order to prevent interference with the feed chain hydraulic continuously variable transmission (hydraulic continuously variable transmission) 10 and the like, the support frame 19 has a feed chain hydraulic continuously variable transmission 10 from the front end in a side view. After extending rearwardly between the input shaft 10A and the output shaft 68B of the gear box 68, it is curved approximately 90 degrees in front of the first transmission motor 10C and extends upward. Then, after extending the front of the counter shaft 71 upward, it tilts upward from the lower side of the guide 18D along the lower side of the lower chain rail 18B, and substantially extends in the front-rear direction of the lower chain rail 18B. It reaches the center.

  As a result, when maintenance / inspection of the feed chain 12B, the feed chain hydraulic continuously variable transmission 10 and the like is performed, the support frame 19 is rotated about the feed chain rotation shaft 35B to thereby feed the feed chain 12B. This can be done easily by separating the rear part from the main body of the threshing device 3. In order to facilitate maintenance and inspection of the feed chain hydraulic continuously variable transmission 10, the feed chain rotating shaft 35 </ b> B is erected in front of the front portion of the feed chain hydraulic continuously variable transmission 10. ing.

  As shown in FIG. 3, in a side view, the front tensioning wheel 17B is provided near the front of the horizontal shaft transmission cylinder 36 that transmits the rotation of the engine 62 to the cutting device 4, and the rear tensioning wheel 17B is It is provided in the vicinity of the rear of the front end portion of the tip conveying device 34A. The drive sprocket 17A is disposed between the front and rear tensioning wheels 17B and 17B in the front-rear direction and is biased toward the front tensioning wheel 17B. The drive sprocket 17A and the feed shaft 12B The counter shaft 71 that transmits the rotation of the engine 62 is positioned substantially at the center. Further, in the vertical direction, it is located at the approximate center of the support frame 19 extending rearward for supporting the counter shaft 71 and the lower chain rail 18B. Further, a tension sprocket 17C is provided between the front tensioning wheel 17B and the drive sprocket 17A. The base is supported by a drive shaft 68D described later.

  Thus, after the feed chain 12B moves upward from the drive sprocket 17A, it moves along the tension sprocket 17C to reach the front tensioning wheel 17B, and from the front tensioning wheel 17B to the upper chain rail 18A. The upper side moves toward the rear tensioning wheel 17B. Thereafter, the feed chain 12B moves from the rear tensioning wheel 17B toward the front lower chain rail 18B, and then moves from the rear end of the lower chain rail 18B to the upper side of the lower chain rail 18B with the front guide 18D. Then, it moves along the guide 18D and reaches the drive sprocket 17A.

  As shown in FIG. 6, the rotation of the engine 62 is transmitted to the feed chain hydraulic continuously variable transmission 10 through the counter shaft 71, and after being accelerated and decelerated by the key box 68, the threshing section transport device 12 is driven. It is transmitted to the output shaft 68B connected to the sprocket 17A.

  Both side portions of the counter shaft 71 are pivotally supported by a pair of support members 80 erected forward at the center of the front wall 50A of the threshing device 3 in the vertical direction. The rotation of the engine 62 is transmitted to the counter shaft 71 via a pulley 71 </ b> A supported on the right end portion of the counter shaft 71.

  The rotation transmitted to the counter shaft 71 is transmitted to the handling cylinder 55 via a pulley (first pulley) 71C supported on the left side of the pulley 71A and the belt 92, and supported on the left end portion of the counter shaft 71. It is transmitted to the input shaft 10A of the feed chain hydraulic continuously variable transmission 10 via a pulley (third pulley) 71D supported on the right side of the pulley (second pulley) 71E, a belt 93, and the like. As shown in FIG. 8, the rotation transmitted to the input shaft 10 </ b> A of the feed chain hydraulic continuously variable transmission 10 is transmitted to the gear box 68 via the output shaft 10 </ b> B and is increased or decreased by the gear of the gear box 68. And transmitted to the output shaft 68B. The rotation transmitted to the output shaft 68B is transmitted to the drive sprocket 17A of the feed chain 12A via the coupling 68C. The drive sprocket 17A is rotatably supported on the drive shaft 68D.

  The drive shaft 68D is supported by a plate 19C attached to the right side of the support frame 19, and when the support frame 19 is rotated with respect to the feed chain rotation shaft 35B, the output shaft 68B by the coupling 68C and the drive sprocket 17A. Thus, the rotation of the engine 62 is not transmitted to the drive sprocket 17A, and the feed chain 12B, the guide 18D, etc. can be exchanged safely. Instead of the coupling 68C that connects the output shaft 68B and the drive shaft 68D, a meshing clutch and a pawl clutch may be provided at the ends of the opposed output shaft 68B and the drive shaft 68D.

  As shown in FIG. 7, the cut box 68 is attached to the right side surface of the rear plate 11 </ b> B that is erected forward at a portion biased downward in the vertical direction of the front wall 50 </ b> A of the threshing device 3. Further, in order to effectively use the space on the front side of the threshing device 3, a feed chain hydraulic continuously variable transmission 10 is attached to the left side surface of the carrier box 68. Furthermore, the feed chain hydraulic continuously variable transmission A first transmission motor 10 </ b> C that rotates the trunnion shaft 10 </ b> F of the feed chain hydraulic continuously variable transmission 10 is attached to the rear side of the motor 10.

  Further, as shown in FIG. 22, a first transmission motor 10C that rotates a trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 on the rear side of the feed chain hydraulic continuously variable transmission 10; A second speed change motor 10F that has a larger output than the speed change motor 10C and rotates the trunnion shaft 10F at a high speed can be mounted side by side.

  The gear 10c of the first transmission motor 10C and the gear 10e of the second transmission motor 10F attached to the body frame 1 are engaged with the tip of the sector gear 10G whose base end is supported by the trunnion shaft 10F. Yes. The control device 85, which will be described later, drives the first transmission motor 10C and rotates the trunnion shaft 10F in the normal mowing mode, and drives the second transmission motor 10F and rotates the trunnion shaft 10F in the handling mode. Note that the second speed change motor 10F freely rotates in the cutting mode, and the first speed change motor 10C freely rotates in the handling mode.

  The feed chain hydraulic continuously variable transmission 10 and the carrier box 68 can be attached to the body frame 1, and the first transmission motor 10 </ b> C and the second transmission motor 10 </ b> F can be attached to the carrier box 68, and the input shaft 10 </ b> A is provided. Instead of the feed chain hydraulic continuously variable transmission 10 in which the pump unit and the motor unit including the output shaft 10B are integrated, a feed chain hydraulic continuously variable transmission in which the pump unit and the motor unit are divided is provided. It can also be used.

  The first transmission motor 10 </ b> C shifts the feed chain hydraulic continuously variable transmission 10 in conjunction with the driving speed of the cutting device 4. Specifically, it is preferable to detect the rotational speed output from the traveling hydraulic continuously variable transmission 66 and transmitted to the reaping device 4, and to operate the first transmission motor 10C in accordance with the rotational speed. is there.

  The front end of the rear plate 11B and the rear end of the front plate 11A provided on the connecting frame 35E of the left and right suspension bases 35 and 35 are connected by loosely inserted pins in order to reduce vibration. . The rear portion of the rear plate 11B is connected to a bracket on the counter shaft 71 side by fastening means such as a bolt. Further, a cutting position sensor 36S that detects a vertical rotation position of the post-cutting frame 28 is provided below the horizontal transmission shaft 36A.

  As shown in FIG. 6, on the left side of the base 35A on the right side, hydraulic system paths such as the feed chain hydraulic continuously variable transmission 10 and the traveling hydraulic continuously variable transmission 66 are provided in order to shorten the hydraulic system path. A control valve 9A for controlling the opening and closing of the control valve 9A is provided. On the right side of the control valve 9A is an oil tank 9B for supplying oil to the feed chain hydraulic continuously variable transmission 10, the traveling hydraulic continuously variable transmission 66, and the like. Is provided.

  In order to effectively utilize the space below the front of the threshing device 3 and prevent the feed chain 12B, the belt 93 and the like from interfering with each other when the feed chain 12 rotates, the input shaft 10A of the feed chain hydraulic continuously variable transmission 10 is provided. The output shaft 10B and the output shaft 68B of the gear box 68 are provided vertically so as to be vertical.

  In order to prevent hydraulic pressure loss, the input shaft 10 of the pump portion of the feed chain hydraulic continuously variable transmission 10 is provided below the output shaft 10B to control the feed chain hydraulic continuously variable transmission 10 and control. The valve 9A and the hydraulic path are shortened.

  In order to facilitate winding of the feed chain 12B, the output shaft 68B of the gear box 68 is provided above the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 to shorten the length of the feed chain 12B. ing.

<Threshing part synchro conveying device>
As shown in FIGS. 17 and 18, the threshing section synchro transport is provided on the right side of the front side portion of the threshing section transport apparatus 12 in order to prevent disturbance of the posture of the cereal transported from the reaping apparatus 4 to the threshing apparatus 3. A device 13 is provided.

  The synchro chain 13A of the threshing section synchro transport device 13 includes tension wheels 13B and 13B that are rotatably supported at the front and rear ends of the upper chain rail, and a driving sprocket 13C provided between the tension wheels 13B and 13B. An endless chain that is wound around and driven.

  In the side view, the front part of the working side synchro chain 13A is located above the front part of the working side feed chain 12B, and the rear part of the working side synchro chain 13A is the middle in the front-rear direction of the pinch 12C. It faces below the part and is located below the working side feed chain 12B.

<Narrow guide>
As shown in FIG. 2, a narrow guide 20 is provided on the left side (uncutted side) of the combine, which can be switched along the side portion between an overhanging posture that protrudes outside the combine and a storage posture that is stored inside. It has been.

  The narrow guide 20 is composed of a front side portion 20A and a rear side portion 20B connected in an indirect state, and the front end portion of the front side portion 20A rotates to the front end portion of the rearmost weeding frame of the leftmost weed pod 31. The rear end portion of the rear side portion 20B is supported by a support member provided on the left side portion of the body frame 1 so as to be movable in the front-rear direction. Further, the narrow guide 20 is switched between an extended posture and a stored posture by a switching means (not shown) having a link structure.

  When the mode switch 6B is connected and the normal cutting mode is changed to the handling mode, the narrow guide 20 is maintained in the stowed posture in order to prevent the auxiliary operator who performs the handling operation and the narrow guide 20 from coming into contact with each other. The

<Transmission mechanism>
Next, as shown in FIG. 9, the transmission mechanism of the present embodiment will be described. The rotation of the engine 62 includes the first path A transmitted to the feed chain hydraulic continuously variable transmission 10, the second path B transmitted to the traveling hydraulic continuously variable transmission 66, and the front of the Glen tank 5. Is branched and transmitted to the third path C transmitted to the gear box 39.

  In the first path A transmitted to the feed chain hydraulic continuously variable transmission 10, the rotation of the engine 62 is performed by the pulley 70 </ b> A supported by the crankshaft 70, the belt 90, and the pulley 71 </ b> A supported by the countershaft 71. Is transmitted to the counter shaft 71 via The first path A is provided with a threshing clutch 90 </ b> A that connects and blocks transmission downstream of the belt 90.

  The rotation of the counter shaft 71 is transmitted to the second processing drum 56 and the dust removal processing drum 57 via the pulley 71B, the belt 91 and the like, and the handling drum 55 and the waste transporting device via the pulley 71C and the belt 92 and the like. 58 is transmitted. The rotation of the counter shaft 71 is transmitted to the input shaft 10A via the pulley 71D, the belt 93, and the pulley 10D supported by the input shaft 10A of the feed chain hydraulic continuously variable transmission 10. Further, the rotation of the counter shaft 71 is transmitted to the first tang 53A via the pulley 71E and the belt 94 supported on the left side of the pulley 71D, and the pulley 71F and the belt 95 supported between the pulley 71D and the pulley 71E. The first transfer helix 53b, the second hot spring 53C, and the second transfer helix 53d are transmitted through the rotary shaft 72.

  The rotation of the rotary shaft 72 is transmitted to the dust exhaust fan 48, the swing sorting device 52, and the waste cutter 59 via a pulley 72 </ b> A supported on the left side of the rotary shaft 72 and a belt 98. In order to increase or decrease the rotational speed of the dust exhaust fan 48, it is preferable that the dust exhaust fan 48 is transmitted via the transmission gear box 120.

  The rotation of the input shaft 10 </ b> A is transmitted to the gear box 68 via the output shaft 10 </ b> B, and after being increased / decreased by a plurality of gears 68 </ b> A built in the gear box 68, the rotation is performed on the output shaft 68 </ b> B supported by the gear box 68. Be transmitted.

  The gear box 68 is provided with a feed chain speed sensor 10S that measures the rotational speed of the gear 68A provided in the output shaft 10B of the feed chain hydraulic continuously variable transmission 10.

  The rotation of the output shaft 68B is transmitted to the drive shaft 68D via the coupling 68C, and is transmitted to the feed chain 12B via the drive sprocket 17A supported on the left end of the drive shaft 68D. As shown in FIG. 5, in order to easily rotate the feed chain 12B around the feed chain rotating shaft 35B provided upright on the left suspension base 35, the feed chain 12B is located on the inner side of the body than the center of the feed chain 12B. The center of the feed chain rotating shaft 35B is provided, and the feed chain rotating shaft 35B extends vertically in the vertical direction. The left end of the output shaft 68B is on the left side of the left end of the counter shaft 71 as shown in FIG. The drive sprocket 17A is also extended to the left of the pulley 71E.

  A main transmission lever 16 for remotely operating the traveling hydraulic continuously variable transmission 66 is provided on the left side of the cockpit 6, and a transmission 65 is provided on the rear side of the main transmission lever 16 according to the lying state of the planted cereal. A sub-transmission lever 15 is provided for switching the stepped sub-transmission device provided in the transmission mechanism. The main transmission lever 16 is provided with a speed increasing switch 16A and a speed reducing switch 16B for remotely operating the feed chain hydraulic continuously variable transmission 10. When the acceleration switch 16A is pressed and held for about 2 seconds or longer, the rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 can be changed to the maximum rotation speed, and the acceleration switch 16A is pressed for about 1 second. Then, the rotation of the output shaft 10B can be increased stepwise. Similarly, when the deceleration switch 16B is pressed and held for about 2 seconds or more, the rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 can be changed to the minimum rotational speed, and the deceleration switch 16B is shortened by about 1 second. When pushed, the rotation of the output shaft 10B can be reduced stepwise. The speed increasing switch 16A and the speed reducing switch 16B are collectively referred to as a speed change switch S. A main transmission lever position sensor 16S that measures the transition position of the main transmission lever 16 is provided below the main transmission lever 16, and a sub-transmission position that measures the transition position of the sub-transmission lever 15 is provided below the sub transmission lever 15. A shift lever position sensor 15S is provided.

  In the second path B transmitted to the traveling hydraulic continuously variable transmission 66, the rotation of the engine 62 is caused by the pulley 70B supported by the crankshaft 70, the belt 96, and the traveling hydraulic continuously variable transmission 66. This is input to the traveling hydraulic continuously variable transmission 66 through a pulley 66B supported by the input shaft.

  The rotation of the input shaft of the traveling hydraulic continuously variable transmission 66 is transmitted to the transmission 65 via the output shaft of the traveling hydraulic continuously variable transmission 66 and is accelerated and decelerated by a plurality of gears built in the transmission 65. After that, the vehicle is transmitted to the traveling device 2 via left and right axles 65A that are pivotally supported by the transmission 65 and drive wheels 65B that are fixed to the front end of the axle 65A. In addition, the rotation of the output shaft of the traveling hydraulic continuously variable transmission 66 is performed from the output shaft 65C that is output from a portion of the transmission path in the transmission 65 that is closer to the auxiliary transmission than the auxiliary transmission device to the tip of the output shaft 65C. Is transmitted to a pulley 36B supported on the right end of the lateral transmission shaft 36A via an output pulley 65D and a transmission belt 65E. As a configuration for urging the tension roller to the transmission belt 65E, a cutting clutch 65F is configured.

  That is, the rotation of the engine 62 transmitted to the input shaft of the traveling hydraulic continuously variable transmission 66 is increased and decelerated by the traveling hydraulic continuously variable transmission 66 and then branched, and one of them is pivotally supported by the transmission 65. The left and right axles 65A are transmitted to the crawler of the traveling device 2, and the other is transmitted to the pulling device 32 of the reaping device 4, the conveying device 34, the synchro chain 13A of the threshing portion synchro conveying device 13 and the like via the lateral transmission shaft 36A. Therefore, the traveling speed V of the traveling device 2, the pulling speed of the pulling device 32 of the reaping device 4, the transporting speed VH of the transporting device 34, and the transporting speed of the synchro chain 13 </ b> A of the threshing unit synchro transporting device 13 are constant. Determined with a relationship. For example, when the traveling speed V of the traveling device 2 is increased, the pulling speed of the pulling device 32 of the reaping device 4, the transporting speed VH of the transporting device 34, and the transporting speed of the synchro chain 13 </ b> A are also increased. When the traveling speed V is low, the pulling speed of the pulling device 32 of the reaping device 4, the transport speed VH of the transport device 34, and the transport speed of the synchro chain 13A are also slow. The axle 65A and the lateral transmission shaft 36A are provided with a travel speed sensor 66S and a transport speed sensor 34S for measuring the rotational speed, respectively.

  Further, in the transmission path in the transmission 65, left and right side clutch gears 65H are pivotally supported so as to be engaged and disengaged on both left and right side portions of the center gear 65G provided on the lower side of the auxiliary transmission. . Claw clutch type left and right side clutches 65I are formed between the center gear 65G and the left and right side clutch gears 65H, respectively. The left and right side clutches 65I mesh with left and right axle gears attached to the bases of the left and right axles 65A.

  The left and right side clutches 65I slide the side clutch gear 65H in the left-right direction by a shifter (not shown) that is operated by a left-right tilting operation of a steering lever disposed in front of the cockpit 6, and from the center gear 65G. By separating it, the transmission is cut off.

  Further, the left and right side clutches 65I are linked to the stepping operation of the take-in pedal 22 disposed on the step in the lower front of the cockpit 6, and when the take-in pedal 22 is depressed, the left and right side clutches 65I. The center gear 65G and the side clutch gear 65H are disengaged via 65I, and the rotation of the engine 62 is not transmitted to the axle 65A. On the other hand, when the depression of the brake pedal 22 is released, the center gear 65G and the side clutch gear 65H are engaged via the left and right side clutches 65I, and the rotation of the engine 62 is transmitted to the axle 65A.

  When one side of the field is trimmed to the edge, the main transmission lever 16 is operated to the neutral position to stop the vehicle, the depression pedal 22 is depressed, and the center gear 65G and the side clutch gear 65H are connected via the side clutch 65I. The engagement is released and the rotation of the axle 65A is stopped.

  When the main transmission lever 16 is operated to the forward side again with the combine stopped, the output shaft 65C is driven by the output of the traveling hydraulic continuously variable transmission 66, and the cutting device 4 is driven via the cutting clutch 65F. Is done. At this time, since the left and right side clutches 65I are disengaged, the traveling device 2 is not driven forward and maintains a stopped state. With this configuration, the planted culm that remains in the reaping device 4 in a state where it has been cut and advanced to the edge of the cocoon can be reaped by operating the drive pedal 22 and the main transmission lever 16.

  Note that the mowing clutch 65F can be interlocked with the depression operation of the take-in pedal 22.

  That is, when the take-in pedal 22 is depressed, the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the reaping device 4 are connected via the reaping clutch 65F, and the reaping device 4 is driven. On the other hand, when the depression of the take-in pedal 22 is released, the connection between the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the cutting device 4 is released via the cutting clutch 65F and the driving of the cutting device 4 is stopped. To do.

  When cutting one side of the field to the edge, the main shift lever 16 is operated to the neutral position to stop the vehicle body. When the take-in pedal 22 is depressed with the combine stopped, the reaping device 4 is driven. At this time, since the main transmission lever 16 is moved to the neutral position, the traveling device 2 is not driven forward and maintains the stopped state.

  In the third path C that is transmitted to the discharge spiral 39A of the Glen tank 5, the rotation of the engine 62 is caused by the pulley 70C supported by the crankshaft 70, the belt 97, the gear box 39, and the like below the Glen tank 5. Is transmitted to a discharge spiral 39A provided in The rotation of the discharge spiral 39 </ b> A is transmitted to an auger spiral 39 </ b> B housed in a discharge cylinder 7 provided behind the Glen tank 5. The third path C is provided with a discharge clutch 97A that connects and disconnects transmission downstream of the belt 97.

<Other transmission mechanisms>
Next, as shown in FIG. 10, another transmission mechanism of this embodiment will be described. The same members as those in the transmission mechanism described above are denoted by the same reference numerals, and redundant description is omitted.

  The rotation of the engine 62 includes a first path A transmitted to the cutting hydraulic continuously variable transmission 100, a second path B transmitted to the traveling hydraulic continuously variable transmission 66, and a front of the Glen tank 5. It is branched and transmitted to the third path C transmitted to the gear box 39.

  In the first path A transmitted to the mowing hydraulic continuously variable transmission 100, the rotation of the counter shaft 71 is supported by the pulley 71D, the belt 93, and the input shaft 101 of the mowing hydraulic continuously variable transmission 100. Is transmitted to the input shaft 101 through the pulley 102. The rotation of the input shaft 101 is accelerated and decelerated by the gear box 103 and then transmitted to the reaping device 4 via the first output shaft 104 of the gear box 103, and the reaping device 4 and the synchro chain via the second output shaft 105. 13A is transmitted. The rotation of the counter shaft 71 is transmitted to the first tang 53A via a pulley 71E and a belt 94 supported on the left side of the pulley 71D, and a pulley 71F and a belt 95 supported between the pulley 71D and the pulley 71E. The first transfer helix 53b, the second hot spring 53C, and the second transfer helix 53d are transmitted through the rotary shaft 72.

  The rotation of the rotary shaft 72 is transmitted to the transmission gear box 120, the swing sorting device 52, and the waste cutter 59 via a pulley 72A and a belt 98 supported on the left side of the rotary shaft 72. Further, the rotation transmitted to the input shaft 121 of the transmission gear box 120 is transmitted to the dust exhaust fan 48 through the gears 122 and 123, and is transmitted to the transmission counter shaft 125 through the gears 122, 123 and 124.

  As shown in FIG. 11, a clutch shifter 126 having engagement teeth formed on both right and left sides that slide in the axial direction of the transmission countershaft 125 is attached to the middle portion of the transmission countershaft 125. The gear shift counter shaft 125 is mounted with a high speed gear 127 having engagement teeth formed on the clutch shifter 126 side and a low speed gear 128 having engagement teeth formed on the clutch shifter 126 side.

  In a restricted state where the supply of hand-held cereals to the feed chain 12B is restricted, the clutch shifter 126 slides in the axial direction of the transmission countershaft 125 according to the measured value of the traveling speed sensor 66S. That is, when the traveling speed of the traveling device 3 is high, the clutch shifter 126 slides toward the high speed gear 127 and engages with the high speed gear 127 to increase the rotation transmitted to the transmission counter shaft 125. On the other hand, when the traveling speed of the traveling device 3 is low, the clutch shifter 126 slides toward the low speed gear 128 and engages with the low speed gear 128 to decelerate the rotation transmitted to the transmission counter shaft 125.

  Further, in a non-regulated state in which the supply of hand-held cereals to the feed chain 12B is allowed, the clutch shifter 126 is measured by the travel speed sensor 66S in order to increase the safety of the hand-working operation of the auxiliary worker. Regardless of the value, sliding is limited to the high speed gear 127 side, sliding to the low speed gear 128 side and engaging with the low speed gear 128 to reduce the rotation transmitted to the transmission counter shaft 125.

  The rotation increased by the engagement of the clutch shifter 126 and the high speed gear 127 is transmitted to the output shaft 131 via the gear 129, and the rotation reduced by the engagement of the clutch shifter 126 and the low speed gear 128 causes the gear 130 to rotate. Via the output shaft 131. The rotation of the output shaft 131 is transmitted to the drive shaft 68D of the feed chain 12B via the coupling 68C, and is transmitted to the feed chain 12B via the drive sprocket 17A supported on the left end of the drive shaft 68D.

  In the second path B transmitted to the traveling hydraulic continuously variable transmission 66, the rotation of the engine 62 is caused by the pulley 70B supported by the crankshaft 70, the belt 96, and the traveling hydraulic continuously variable transmission 66. This is input to the traveling hydraulic continuously variable transmission 66 through a pulley 66B supported by the input shaft.

  The rotation of the input shaft of the traveling hydraulic continuously variable transmission 66 is transmitted to the transmission 65 via the output shaft of the traveling hydraulic continuously variable transmission 66 and is accelerated and decelerated by a plurality of gears built in the transmission 65. After that, the vehicle is transmitted to the traveling device 2 via left and right axles 65A that are pivotally supported by the transmission 65 and drive wheels 65B that are fixed to the front end of the axle 65A.

  In the third path C that is transmitted to the discharge spiral 39A of the Glen tank 5, the rotation of the engine 62 is caused by the pulley 70C supported by the crankshaft 70, the belt 97, the gear box 39, and the like below the Glen tank 5. Is transmitted to a discharge spiral 39A provided in

<Driving and stopping the feed chain>
Next, a method for driving / stopping the feed chain 12B of this embodiment will be described. As shown in FIG. 12, on the input side of the control device 85 provided in the cockpit 6, a travel speed sensor 66 </ b> S that detects the speed V of the travel device 2 and the speed VH of the transport device 34 of the reaping device 4 are provided. A transport speed sensor 34S for detecting, a feed chain speed sensor 10S for detecting the speed VF of the feed chain 12B of the threshing section transport device 12, a sub shift lever position sensor 15S for detecting the lever position of the sub shift lever 15, Acceleration / deceleration switches 16A and 16B for increasing / decreasing the speed VF of the feed chain 12B provided on the main transmission lever 16 and speed control for increasing / decreasing the speed VF of the feed chain 12B provided on the side surface of the barrel cover 50D. Dial 6A, mode switch 6B for switching to the handling mode, and feed chain 12B from the rear side toward the front side A reverse switch 6C for rotating, a culm sensor 34C for detecting the presence or absence of a culm conveyed on the feed chain 12B, and a stop switch for urgently stopping the drive of the feed chain 12B provided on the side surface of the barrel cover 50D 6D is connected via a predetermined input interface circuit. On the other hand, on the output side, a first transmission motor 10C that drives the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 in the normal cutting mode, and a feed chain hydraulic continuously variable transmission in the handling mode. A second transmission motor 10E that drives the 10 trunnion shafts 10F is connected via a predetermined output interface circuit.

  The mode switch 6B is not limited to a switch that is manually operated by an operator. That is, in order to prevent disturbance of the posture of the cereal that is handed over from the terminal end of the conveying device 34 of the cutting device 4 to the starting end of the feed chain 12B, the terminal end of the conveying device 34 has a hand that swings in the vertical direction. A handling auxiliary plate 42 and a rear auxiliary clamp 43 are provided below the handling handle plate 42. At the time of switching to the handling mode, the handling handle plate 42 is swung upwardly about the axis 44A in order to place the handling grain candy on the rear auxiliary nip 43 and the feed chain 12B. Then, the state is switched from the restricted state to the non-restricted state. It is also possible to provide a mode switch 46 that is turned ON / OFF in conjunction with an operation of swinging the hand handling restriction plate 42 and use the mode switch 46 as the mode switch 6B.

(First feed chain drive method)
FIG. 13 illustrates a first driving method of the speed VF of the feed chain 12B. The horizontal axis indicates the traveling speed V of the traveling device 2 detected by the traveling speed sensor 66S, and V1 and V2 are first and second set values of the traveling speed V, respectively. The left vertical axis indicates the speed VF of the feed chain 12B detected by the feed chain speed sensor 10S, VF1 and VF2 are the first and second set values of the speed VF of the feed chain 12B, and the right vertical axis indicates the conveyance speed. The speed VH of the transport device 34 detected by the sensor 34S is shown, VH1 and VH2 are first and second set values of the transport speed VH, and VH1 and 2 are the first and second set values of the travel speed V of the travel device 2. It corresponds to the speed of V1,2.

  The solid line indicates the speed VF of the feed chain 12B, and the broken line indicates the speed VH of the transport device 34.

  First, the control device 85 determines whether or not there is an input from the mode switch 6B. If it is determined that there is no input from the mode switch 6B, the control device 85 determines the speed VH (conveyance speed sensor 34S) of the transport device 34. It is determined whether or not the input value from (1) is lower than the first set value VH1.

  When it is determined that the speed VH of the transport device 34 is lower than the first set value VH1, the speed VF of the feed chain 12B is controlled to the speed calculated by the following equation 1 as shown in the first state. Note that the transport speed VH of the transport device 34 with respect to the travel speed V of the travel device 2 varies depending on the gear position set by the auxiliary transmission lever 15.

Formula 1 VF = K × V
However, K = VH1 / V1
On the other hand, when it is determined that the speed VH of the conveying device 34 is equal to or higher than the first set value VF1, the speed VF of the feed chain 12B is calculated by the following equation 2 as shown in the second state. To control.

Formula 2 VF = VF1 + 1.5 to 2.5 × K × (V−V1)
However, K = (VH2-VH1) / (V2-V1)
Next, the control device 85 determines whether or not the speed VF of the feed chain 12B (input value of the feed chain speed sensor 10S) is lower than the second set value VH2 of the transport device 34.

  When it is determined that the speed VF of the feed chain 12B is lower than the second set value VH2 of the transport device 34, the speed VF of the feed chain 12B is set to the speed calculated by Expression 2 as shown in the second state. Control.

  On the other hand, when it is determined that the speed VF of the feed chain 12B is equal to or higher than the second set value VH2 of the transport device 34, the speed VF of the feed chain 12B is set to the second set value VF2 as shown in the third state. To maintain.

  When the traveling speed V of the traveling device 2 detected by the traveling speed sensor 66S exceeds the maximum speed V2 over a predetermined time, a warning is given to the driver by a monitor or the like disposed in front of the cockpit 6. It is preferable.

(Second feed chain drive method)
FIG. 14 illustrates a second driving method of the speed VF of the feed chain 12B. The solid line indicates the speed VF of the feed chain 12B, the broken line indicates the speed VH of the transport device 34, the same members as those in the first driving method are denoted by the same reference numerals, and duplicate descriptions are omitted.

  First, the control device 85 determines whether or not there is an input from the mode switch 6B. If it is determined that there is no input from the mode switch 6B, the control device 85 maintains the speed VF of the feed chain 12B in the first to third states. To do.

  On the other hand, when it is determined that the mode switch 6B has been input, the speed VF of the feed chain 12B is controlled to the speed calculated by the following equation 3. The speed VF of the feed chain 12B can be increased / decreased in a range of 10 to 20% by the speed control dial 6A. It is preferable to operate 6A to increase the speed of the feed chain 12BVF.

Formula 3 VF = 0.25-0.5 * VH1
(First stop method of feed chain)
FIG. 15 shows a first stopping method of the feed chain 12B driven by the first driving method.

  The operation state of the stop switch 6D is shown in the first stage from the upper side of FIG. 15, and the feed stage hydraulic continuously variable transmission 10 that increases and decreases the rotational speed transmitted to the feed chain 12B is shown in the second stage. The position of the trunnion shaft 10F is illustrated, and the speed VF of the feed chain 12B is illustrated in the third stage. Further, the driving state of the engine 62 is illustrated in the fourth stage of FIG. 15, and the speed VH of the transport device 34 provided in the reaping device 3 that is driven in conjunction with the traveling device 2 is illustrated in the lowermost stage. .

  First, the control device 85 determines whether or not there is an input from the stop switch 6D. If it is determined that there is no input from the stop switch 6D, the control device 85 drives the feed chain 12B by the first driving method.

  On the other hand, when it is determined that the stop switch 6D has been input, the first transmission motor 10C connected to the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 is driven, and the rotational position of the trunnion shaft 10F is determined. The rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 is stopped by rotating to a neutral position. As a result, the driving force to the feed chain 12B is interrupted, and the rotation of the feed chain 12B stops.

  When it is determined that the stop switch 6D has been input, the engine 62 is stopped to stop the rotation transmitted to the traveling hydraulic continuously variable transmission 66, and the traveling device 2 and the reaping device 4 are provided. The rotation of the transport device 34 is stopped.

  In order to stop the feed chain 12B more quickly, it is preferable to rotate the trunnion shaft 10F slightly beyond the neutral position to a position on the reverse side.

(Second method for stopping the feed chain)
FIG. 16 shows a second stopping method of the feed chain 12B driven by the second driving method. In addition, the same code | symbol is attached | subjected to the same member as a 1st stop method, and the overlapping description is abbreviate | omitted.

  First, the control device 85 determines whether or not there is an input from the stop switch 6D. If it is determined that there is no input from the stop switch 6D, the control device 85 drives the feed chain 12B by the second driving method.

  On the other hand, when it is determined that the stop switch 6D has been input, the rotation position of the trunnion shaft 10F is driven by the second transmission motor 10E connected to the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10. The rotation of the output shaft 10B of the feed chain hydraulic continuously variable transmission 10 is stopped by rotating to a neutral position. As a result, the driving force to the feed chain 12B is interrupted, and the rotation of the feed chain 12B stops.

  When it is determined that the stop switch 6D has been input, the engine 62 is stopped to stop the rotation transmitted to the traveling hydraulic continuously variable transmission 66, and the traveling device 2 and the reaping device 4 are provided. The rotation of the transport device 34 is stopped.

  In order to stop the feed chain 12B in an emergency, the second speed change motor 10E sets a reduction ratio or the like larger than that of the first speed change motor 10C used in the first stop method, and the first speed change motor 10C moves the trunnion shaft 10F. The trunnion shaft 10F can be rotated at a higher speed than when rotating. Further, in order to stop the feed chain 12B more quickly, the trunnion shaft 10F is rotated until it slightly exceeds the neutral position to the reverse rotation position, and the rotation of the output shaft 10B is stopped by the rotation sensor 68G. It is preferable to rotate the trunnion shaft 10F from the reverse rotation side position to the neutral position after the rotation of the output shaft 10B is detected again or after 1 to 2 seconds have elapsed.

  In order to remove cereals and the like clogged between the feed chain 12B and the pinch 12C, the rotation direction of the feed chain 12B can be switched by operating the reverse switch 6C. In this case, in order to prevent inadvertent reverse rotation of the feed chain 12B and increase the safety of the auxiliary worker, the feed chain 12B is driven to rotate reversely only when the reverse rotation switch 6C is operated. In order to ensure the time to leave the combine, in order to drive the feed chain 12B in the reverse direction after the reverse switch 6C has been operated for 1 to 2 seconds or to notify the surrounding collaborators of the reverse state of the feed chain 12B, It is preferable to sound the horn when the feed chain 12B is reversed.

  In addition, after the stop switch 6D is operated and the feed chain 12B, the engine 62, etc. are stopped, in order to start the engine 62 again, it is necessary to release the mode switch 6B and switch to the normal cutting mode.

  The present invention can be applied to agricultural work vehicles.

3 Threshing device 4 Mowing device
4A frame (first frame)
4B frame (second frame)
4C curved portion 12B feed chain 12C pinching pin 26B handle 34 conveying device 38A support portion
38B support part (second support part)
40 1st auxiliary clamp (auxiliary clamp)
42 Hand Handling Restriction Plate (Hand Handling Restriction Member)
42A bent portion 42B gripping member
42D operation plate (plate)
46 mode switch (switch)
46A terminal
49A front dustproof cover (dustproof cover)
50 Chamber 62 Engine

Claims (2)

A threshing device (3) disposed behind the reaping device (4) and a feed disposed along a handle (26B) formed on one side of the handling chamber (50) of the threshing device (3). In the combine provided with a chain (12B) and a scissors (12C) arranged facing the upper side of the feed chain (12B) and biased toward the feed chain (12B), the harvesting device (4 ) The hand-handling restricting member (42) extending from the rear part toward the front part of the clip (12C) with respect to the support part (38A) provided at the rear part of the cutting device (4). The front portion of the handling restricting member (42) is supported so as to be able to turn up and down around the center of rotation, and the hand handling restricting member (42) is rotated in the rearward direction, so The rear end portion of the restricting member (42) is located on the rear side of the front end portion of the clamp (12C), and the The regulation state in which the supply of hand-held cereals to the dough chain (12B) is regulated, and the hand-controlling member (42) rotates upward, and the hand-controlling member ( 42) The distance between the rear end portion of the pinch (12C) and the front end portion of the pinch (12C) is increased so that the feed chain (12B) can be supplied to the feed chain (12B). An auxiliary pinch (40) extending backward from the rear part of the reaping device (4) toward the upper side of the feed chain (12B) and pinching the cereal with the feed chain (12B) is configured. A bent portion (42A) bent upward is formed at the rear end portion of the hand-handling restricting member (42), and the hand-handling restricting member is seen in a side view when in the restricted state. (42) The rear end portion faces the lower side of the front end portion of the clamp (12C), and the bent portion Combine, characterized in that it has a configuration in which the gap is closed, which is formed between the upper surface and the front end lower surface of the clamping扼杆(12C) of the feed chain (12B) by 42A). The lower end of the left side of the second frame (4B) for attaching the dust cover (49A) is mounted on the rear of the first frame (4A) on the side of the cutting device (4) having the support portion (38A) at the rear end. Then, the second frame (4B) is extended upward from the lower left end portion thereof and then bent toward the right side to form a bending portion (4C). The bending portion (4C) has a switch (46). A second support part (38B) to which the switch is attached is mounted, and a terminal part (46A) of the switch (46) is attached to the distal end part of the bent part (42A) formed at the rear end part of the hand handling restricting member (42). The combine according to claim 1, wherein the switch (46) is turned on by an operation of fixing a plate (42D) for pressing the handle and rotating the hand-controlling member (42) upward .

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