JP6421848B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  Conventionally, a sensor that detects that a foreign object has been caught between the feed chain and the culvert of the combine or that the cereal is clogged is provided, and based on the detection result of this sensor, the upper cover of the threshing device is in a half-open state The structure (patent document 1) to do is proposed.

JP 2009-195169 A

  However, the configuration of Patent Document 1 has a problem that it is insufficient to ensure the safety of a worker who performs a handling operation when the engine is restarted unexpectedly. Further, there is a problem that the upper cover may be opened during the harvesting and harvesting work due to erroneous detection of the sensor or the like.

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

  In order to solve the above problems, the present invention takes the following technical means.

  The invention according to claim 1 is provided with a traveling device (2) below a body frame (1) on which an engine (62) is mounted, and a cutting device (4) is provided in front of the body frame (1), In the combine provided with a threshing device (3) behind the reaping device (4), a threshing portion transporting device (12) for transporting the harvested cereal meal is provided on the side of the threshing device (3). The device (12) includes a feed chain (12B) and a clamping rod (12A) positioned above the feed chain (12B), and biases the clamping rod (12A) toward the feed chain (12B). And an operating tool (6D) disposed in the periphery of the threshing part transport device (12) in a state in which a threshing clutch (90A) for transmitting rotation of the engine (62) to the threshing device (3) is connected. ) Is operated, And a control device (85) that can remove foreign matter between the holding rod (12A) and the feed chain (12B) by stopping the holding rod (62) and moving the holding rod (12A) upward. It is a combine characterized by.

  The invention according to claim 2 includes a lock mechanism for locking the clamping rod (12A) on the feed chain (12B), and the lock mechanism is unlocked when the operation tool (6D) is operated. The combine according to claim 1, which is configured as described above.

  The invention according to claim 3 includes an upper cover (50D) that covers the upper portion of the handling chamber (50) of the threshing device (3) and includes the clamping rod (12A), and a half-opening of the upper cover (50D). First detecting means (120) for detecting the state is provided, when the threshing clutch (90A) is shut off, and the half open state of the upper cover (50D) is not detected by the first detecting means (120) The combine according to claim 2, wherein the engine (62) can be started.

  According to invention of Claim 1, it arrange | positions in the peripheral part of a threshing part conveyance apparatus (12) in the state to which the threshing clutch (90A) which transmits rotation of an engine (62) to a threshing apparatus (3) is connected. When the operated tool (6D) is operated, the engine (62) is stopped and the holding rod (12A) is moved upward, and the foreign matter between the holding rod (12A) and the feed chain (12B) Since the control device (85) that can remove the slag is provided, the engine (62) is stopped with the threshing clutch (90A) connected, and the foreign matter between the holding rod (12A) and the feed chain (12B) is removed. It can be easily removed and work efficiency can be increased.

  According to the invention described in claim 2, when the operation tool (6D) is operated, the clamping rod (12A) is placed on the feed chain (12B) in order to achieve the effect of the invention described in claim 1. The lock mechanism that locks to the lock is released.

  According to invention of Claim 3, in addition to having the effect of the invention of Claim 2, the threshing clutch (90A) is shut off, and the threshing device (3) is provided by the first detection means (120). Since the engine (62) can be started when the half-open state of the upper cover (50D) covering the upper part of the handling chamber (50) is not detected, the engine (62) remains in the half-open state. Is started, and threshing can be prevented from blowing out from the threshing device (3). Moreover, the safety | security of the auxiliary worker who removes the cereals etc. which were jammed in the threshing apparatus (3) can be improved.

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 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 a principal part left view of a conveying apparatus. It is attachment explanatory drawing of the hydraulic continuously variable transmission for other feed chains. It is a fragmentary sectional top view of a threshing apparatus. It is principal part sectional drawing of a threshing apparatus. It is the E section enlarged view of FIG. It is explanatory drawing of the upper cover of a closed state. It is the F section enlarged view of FIG. It is explanatory drawing of the drive method which drives a 1st motor, cancels | releases a 1st hook, and makes an upper cover a half-open state. It is explanatory drawing of the drive method which operates an opening-and-closing lever, cancels | releases the 1st and 2nd hooks, and makes an upper cover a full open state. It is explanatory drawing of the positional relationship of a half-opening detection sensor and a contact body in the state which closed the upper cover. It is explanatory drawing of the positional relationship of a half-open detection sensor and a contact body in the state which driven the 1st motor and canceled the 1st hook. It is explanatory drawing of the positional relationship of a half-opening detection sensor and a contact body in the state which driven the 1st motor, canceled the 1st hook, and made the upper cover half-opened. It is explanatory drawing of the positional relationship of a half-opening detection sensor and a contact body in the state which operated the opening-and-closing lever, released the 1st and 2nd hooks, and opened the upper cover fully. It is a fragmentary sectional top view of a threshing apparatus, and is explanatory drawing of the positional relationship of a half-opening detection sensor and a contact body. It is explanatory drawing of the engagement state of a 2nd hook. It is explanatory drawing of the method of decelerating an engine, stopping a feed chain, and making an upper cover a half-open state. It is explanatory drawing of the method of restarting an engine.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate understanding, as viewed from the pilot, the front side is the front side, the rear side is the rear side, the right hand side is the right side, and the left hand side is the left side. The configuration is not limited.

  As shown in FIGS. 1 and 2, the combine is provided with a traveling device 2 including a pair of left and right crawlers for traveling on the soil surface below the machine frame 1, and threshing / sorting on the upper left side of the machine 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. A pilot seat 6 on which an operator is boarded is provided on the upper right side of the fuselage frame 1, and an engine room 8 on which an engine 62 is mounted is provided below the pilot seat 6.

<Mowing device>
The reaping device 4 is attached to a reaping frame 30 that is a main frame formed by a post-reaping frame 28 and a reaping transmission case 29 that is laterally provided at the front end of the post-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 cereals from dropping when taking over, a support 37 is provided on the inner side of the front end portion of the threshing portion transport device 12 from the rear end portion of the transport device 34 to the front end portion of the handling chamber 50. It has been.

  In order to increase the recovery rate of grain, a grain sensor that detects the amount of grain that is conveyed to the front and rear of the conveying device 34 of the harvesting device 4 where the harvested grains meet, the front side of the feed chain 12B, etc. It is preferable to provide 34C and switch the conveyance speed of the feed chain 12B in accordance with the output value of the grain culm sensor 34C.

  As shown in FIG. 13, the terminal end of the transport device 34 is provided at the terminal end of the transport device 34 in order to prevent the posture of the cereals taken over from the terminal end of the transport device 34 to the start end of the feed chain 12B. Is provided with a handle lever 38 ("handling restricting member" in the claims) that swings up and down around a shaft 38B extending in the left-right direction. An auxiliary rod 38A made of a spring plate or the like attached by a fastening member such as a bolt is provided at the terminal end of the conveying device 34.

  The handle lever 38 is formed to have a width in the left-right direction of the heel 12A, and the rear end portion of the handle lever 38 has a heel to prevent malfunction of the handle lever 38 due to vibration or the like. It extends below the front part of the collar 12A. The auxiliary rod 38A is formed to have a width in the left-right direction of the feed chain 12B. The front end portion of the auxiliary rod 38A extends to the front side of the front end portion of the handle lever 38, and the rear end portion is , Extending to the rear part of the flange 12A.

  During normal mowing and threshing work, the handle lever 38 is swung downward about the shaft 38B (regulation) in order to restrict the pestle from being placed on the auxiliary rod 38A and the feed chain 12B. State). On the other hand, at the time of hand-handling work, in order to place the grain straw on the auxiliary straw 38A and the feed chain 12B, after lifting the front part of the straw 12A upward, the handle lever 38 is centered on the shaft 38B. Is swung upward (unregulated state).

  In order to improve the operability of the handle lever 38, the handle lever 38 is arranged so as to be shifted from the flange 12A in the left-right direction, or the length of the handle lever 38 in the front-rear direction is shortened. Thus, it is possible to prevent the rear end portion of the handle lever 38 from extending below the flange 12A.

  Further, in order to maintain a good posture of the cereal that is transferred from the conveying device 34 to the threshing portion conveying device 12, auxiliary conveyance is performed to a portion biased to the right side of the upper surface or the lower surface of the support 37 facing the tip conveying device 34 </ b> B. A device 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. Also, the rotation of the counter shaft 71, which will be described later, is transmitted to the auxiliary transport device via the output shaft B of the feed chain hydraulic continuously variable transmission 10 so that the moving speed of the belt with lugs and the like can be controlled. It is preferable to set the same speed as that of the moving speed. In place of the feed chain hydraulic continuously variable transmission 10, a hydraulic mechanical continuously variable transmission configured by combining a hydrostatic continuously variable transmission and a planetary gear may be used.

  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 device 3 includes a handling chamber 50 for threshing the cereal at the upper part of the front side, and a sorting chamber 51 for sorting the threshed grains below the handling chamber 50. Yes.

  In the handling chamber 50, a handling cylinder 55 having a plurality of teeth is supported by a handling cylinder shaft 55A 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 backward, and the threshing transported by the threshing section transporting device 12 is carried out. 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 That is, the second receiving rod 53D for collecting the second thing 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 and 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 is urged toward the feed chain 12B by the urging means 14 such as a spring with respect to the upper cover 50D of the handling chamber 50. The feed chain 12B is wound around and driven by tensioning wheels 17B and 17B that are rotatably supported at the front and rear ends of the upper chain rail 18A, and a driving 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.

  A speed control dial is provided on the side surface of the upper cover 50D so that an auxiliary worker who is performing the handing work can easily adjust the speed VF1 of the feed chain 12B during the handing work to improve workability. 6A is provided. Further, in order to efficiently adjust the speed VF of the feed chain 12B in accordance with the amount of the handled grain culm, the speed control dial 6A is arranged around the auxiliary basket 38A on which the handled grain culm is mounted. In order to efficiently assist an auxiliary operator who is not familiar with the operator seated on the cockpit 6, the speed control dial 6 </ b> A can be disposed on the side panel of 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. 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 the support frame 19 from interfering with the feed chain hydraulic continuously variable transmission 10 and the like, the input shaft 10A and the gear box 68 of the feed chain hydraulic continuously variable transmission 10 from the front end in a side view. After extending rearward between the output shafts 68B, the first transmission motor 10C is bent 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.

  In a side view, the front tensioning wheel 17B is provided in the vicinity of the front of the horizontal shaft transmission cylinder 36 that transmits the rotation of the engine 62 to the cutting device 4, as shown in FIG. 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.

  As a result, the feed chain 12B moves upward from the drive sprocket 17A, and then moves along the tension sprocket 17C to reach the front tensioning wheel 17B. 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 driving of 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 the pulley 71C and the belt 92 supported on the left side of the pulley 71A, and on the right side of the pulley 71E 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 the supported pulley 71D, belt 93, and the like. The rotation transmitted to the input shaft 10A of the feed chain hydraulic continuously variable transmission 10 is transmitted to the gear box 68 via the output shaft 10B as shown in FIG. 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 carrier box 68 is attached to the right side surface of the rear plate 11 </ b> B that is erected forward at a portion biased to the lower side 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. 14, on the rear side of the feed chain hydraulic continuously variable transmission 10, a first transmission motor 10C for rotating a trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10, and the first A second speed change motor 10E having a larger output than the speed change motor 10C and rotating the trunnion shaft 10F at a high speed can be mounted side by side.

  The gear 10c of the first transmission motor 10C attached to the body frame 1 and the gear 10e of the second transmission motor 10E are engaged with the distal end 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 10E and rotates the trunnion shaft 10F in the handling mode. Note that the second speed change motor 10E 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> E 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.

  On the left side of the right base 35A, as shown in FIG. 6, in order to shorten the hydraulic system path, hydraulic system paths such as the feed chain hydraulic continuously variable transmission 10 and the traveling hydraulic continuously variable transmission 66 are provided. 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.

<Top cover>
The upper cover 50D is rotatably provided around the pin 101 with respect to the machine frame of the threshing device 3 by hinges 100 provided at three places in the front and rear, and between the upper cover 50D and the machine frame of the threshing device 3 There is provided an urging means 103 such as a gas spring for moving the upper cover 50D upward (in the front view, the upper cover 50D is counterclockwise). During the cutting operation, the upper cover 50D is in a closed state in which the upper cover 50D covers the upper side of the handling cylinder 55 and the clamping rod 12A contacts the feed chain 12B. Further, in order to maintain the upper cover 50D in the closed state, a lock mechanism including first and second hooks 50G and 50H, pins 50K and 50N, and the like is provided.

  In order to easily remove foreign substances clogged between the feed chain 12B and the clamping rod 12A or the clamping rod 12C, as shown in FIGS. The first motor (“actuator” in the claims) 54 that is driven in conjunction with the operation of the 6D is provided. In FIG. 18, for easy understanding, the half-open state and the fully-open state of the upper cover 50D are shown together.

  The first motor 54 is attached to the front surface of the upper cover 50D via a bracket 54F having a substantially cross-sectional shape in cross section, and the bracket 54F bypasses the urging means 103 and is attached to the upper cover 50D. It extends from the front toward the front. The first motor 54 is disposed above a gear box 73 provided on the left side of the counter shaft 72 in order to drive the first motor 54 and quickly open the upper cover 50D in a half-open state. The gear box 73 is disposed at a position facing the notch 73B provided on the rear upper surface of the gear box case 73A covering the periphery of the gear box 73. The upper side of the first motor 54 is covered with a front cover 50U that extends forward from the upper cover 50D.

  To make the side portion of the holding lid 12A of the upper cover 50D half open, that is, in a half open state, a lock between the first hook (“hook” in the claims) 50G and a pin 50K extending in the front-rear direction in the handling chamber 50 Is released, and the second hook 50H having a longer overall length than the first hook 50G and the pin 50N are brought into a locked state. Further, in order to open the upper cover 50D, that is, to make it fully open, the first hook 50G and the pin 50K are unlocked, and the pin 50N extending in the front-rear direction to the second hook 50H and the handling chamber 50 This is done by releasing the locked state.

  The upper ends of the first and second hooks 50G and 50H are rotatably supported by shafts 50F extending in the front-rear direction on the upper cover 50D.

  Further, the half-open state refers to a state in which the side portion of the upper cover 50D of the clamping rod 12A is moved upward by about 50 to 100 mm to remove foreign substances clogged on the feed chain 12B. A state in which the side portion of the holding rod 12A of 50D is moved approximately 300 to 450 mm upward to perform maintenance / inspection work of the feed chain 12B.

  As shown in FIG. 20, the first motor 54 is connected to the first hook 50 </ b> G via a connecting arm 86. In FIG. 20, for easy understanding, the half-open state and the full-open state of the upper cover 50D are shown together.

  The connection arm 86 includes a first connection arm 87 whose right side is connected to the first motor 54, a third connection arm 89 that is rotatably supported by the shaft 50F and connected to the rear surface of the first hook 50G. The second connecting arm 88 connects the left side of the first connecting arm 87 and the upper side of the third connecting arm 89.

  One side of an arm 54B is attached to the rotating shaft 54A of the first motor 54, and a pin 54C extending in the front-rear direction is provided on the other side of the arm 54B.

  The first connecting arm 87 is formed in a substantially horizontal L shape when viewed from the front, and the lower left portion of the first connecting arm 87 is a spindle 50M extending in the front-rear direction provided on the front surface of the upper cover 50D. Is supported so as to be swingable in the left-right direction.

  A long hole 87A having a long diameter in the left-right direction is formed in the right side portion of the first connecting arm 87, and a pin 54C is fitted into the long hole 87A. A support shaft 87 </ b> B extending in the front-rear direction is provided on the upper portion of the first connection arm 87.

  The second connecting arm 88 includes a plate portion 88B in which a long hole 88A having a long diameter in the left-right direction is formed, and a rod-shaped portion 88C extending from the right side portion of the plate portion 88B toward the support shaft 87B of the first connecting arm 87. Formed from. The right end portion of the rod-shaped portion 88 </ b> C is connected to the support shaft 87 </ b> B of the first connection arm 87.

  The third connecting arm 89 is formed in a substantially semi-elliptical shape when viewed from the front, and an upper end portion of the third connecting arm 89 is provided with a support shaft 89A extending in the front-rear direction. It is inserted in the long hole 88A of the plate portion 88B. The lower end portion of the third connecting arm 89 is fixed to the upper end portion of the first hook 50G.

  Both ends of urging means 87C made of a spring spring or the like that rotates the first connecting arm 87 in the clockwise direction about the support shaft 50M in front view are attached to the lower part of the bracket 54F and the front surface of the second hook 50H. Yes.

  As a result, as shown in FIG. 27, when the engagement of the first hook 50G and the pin 50K is released and the upper cover 50D moves from the closed state to the half-open state, the second hook is caused by the compressive force of the biasing means 87C. After the right side surface of 50H moves upward while being in sliding contact with pin 50N, the tip of second hook 50H is engaged with pin 50N. Next, when the upper cover 50D is moved from the half-opened state to the fully-opened state by operating the opening / closing lever 50E, the second hook 50H rotates counterclockwise around the center of the shaft 50F, and then the base of the second hook 50H. The end portion engages with a pin 50S provided in the front-rear direction on the front surface of the upper cover 50D.

  On the other hand, when the upper cover 50D is manually moved from the fully open state to the closed state, the upper cover 50D is attached to the cereals conveyed by the feed chain 12B provided on the left side of the gear box case 73A by the compressive force of the urging means 87C. The right side surface of the second hook 50H moves downward while slidably contacting the pin 50N without interfering with the isolation wall 50T that prevents intrusion of sawdust or the like into the handling chamber 50.

  When the first motor 54 rotates counterclockwise in front view in conjunction with the operation of the stop switch 6 </ b> D, the pin 54 </ b> C of the arm 54 </ b> B attached to the first motor 54 is on the right side of the long hole 87 </ b> A of the first connection arm 87. Engage with the end, and rotate the first connecting arm 87 counterclockwise about the support shaft 50M.

  When the first connecting arm 87 rotates counterclockwise about the support shaft 50M, the rod-shaped portion 88C connected to the support shaft 87B of the first connection arm 87 moves to the right side, and the second connection arm 88 moves to the right side. Move.

  When the second connecting arm 88 moves to the right side, the support shaft 89A fitted in the long hole 88A of the plate portion 88B of the second connecting arm 88 moves to the right side, and the upper end portion of the third connecting arm 89 about the shaft 50F. Rotate counterclockwise.

  When the upper end portion of the third connection arm 89 rotates counterclockwise, the upper end portion of the first hook 50G to which the lower end portion of the third connection arm 89 is connected rotates counterclockwise about the shaft 50F. The locked state between the one hook 50G and the pin 50K provided below the shaft 50F is released, and the upper cover 50D is moved upward about the pin 101 by the urging means 103 to be in a half-open state.

  This makes it possible to easily remove foreign substances clogged between the feed chain 12B and the holding rod 12A or the holding rod 12C, and to prevent a large amount of grains, straws and the like from being scattered outside the machine body. can do.

  After the locked state of the first hook 50G and the pin 50K is released, the second hook 50H having a longer overall length than the first hook 50G whose upper end is supported by the shaft 50F is engaged with the pin 50N and locked. The upper cover 50D is moved upward by the urging means 103 until the state is reached, and a gap of about 50 to 100 mm is formed between the feed chain 12B and the clamp 12C.

  In order to open the upper cover 50D when the first motor 54 cannot be driven due to disconnection or the like, an opening / closing lever 50E is provided as shown in FIG.

  In order to reduce the size of the first motor 54 mounted on the front surface of the upper cover 50D, the base of the open / close lever 50E is a cylinder that is rotatably fitted on a shaft 50F between the first hook 50G and the second hook 50H. It is supported by the shaft 50Q.

  A base 50L is provided with a piece 50L that extends toward the first and second hooks 50K and 50H and engages with the base end of the first and second hooks 50K and 50H. The cylindrical shaft 50Q is fitted with a biasing means 50P made of a torque spring or the like for maintaining the first hook 50K in a locked state, and one end side of the biasing means 50P is engaged with the first hook 50K. The other end is engaged with the upper cover 50D.

  When the opening / closing lever 50E is moved upward about the cylindrical shaft 50Q (in the front view, the opening / closing lever 50E is counterclockwise), the piece 50L provided at the base of the opening / closing lever 50E becomes the base of the first hook 50K. Engage.

  When the opening / closing lever 50E is moved further upward about the cylindrical shaft 50Q with the piece 50L engaged with the base portion of the first hook 50K, the first hook 50K moves upward (about the first view in front view) about the shaft 50F. 1 hook 50K is moved in the counterclockwise direction) and the locked state with pin 50K is released, and upper cover 50D is moved upward about pin 101 by biasing means 103 to be in a half-open state.

  When the opening / closing lever 50E is moved upward about the cylindrical shaft 50Q, the piece 50L provided at the base of the opening / closing lever 50E engages with the base of the second hook 50H. When the opening / closing lever 50E is moved further upward about the cylindrical shaft 50Q while the piece 50L is engaged with the base of the second hook 50H, the second hook 50H moves upward (about the first view in the front view) about the shaft 50F. The hook 50H is moved counterclockwise) to release the locked state with the pin 50N, and the upper cover 50D is moved further upward about the pin 101 by the urging means 103 to be fully opened. Accordingly, even when the first motor 54 cannot be driven due to disconnection or the like, the upper cover 50D can be set in a half-open state or a full-open state by operating the opening / closing lever 50E.

  When the first hook 50G is moved upward about the shaft 50F by the opening / closing lever 50E, the third connection arm 89 connected to the first hook 50G moves leftward about the shaft 50F. However, since the long hole 88A is formed in the second connecting arm 88, the support shaft 89A of the third connecting arm 89 can move in the left direction in the long hole 88A of the second connecting arm 88, The cover 50D can be in a half-open state or a full-open state.

  Similarly, when the first hook 50G is moved upward about the shaft 50F by the opening / closing lever 50E, the first hook 50G connected to the first hook 50G via the second and third connecting arms 88 and 89 is used. The connecting arm 87 moves in the left direction. However, since the elongated hole 87A is formed in the first connecting arm 87, the first connecting arm 87 is inserted into the elongated hole 87A with the pin 54C provided on the arm 54B attached to the first motor 54. The upper cover 50D can be in a half-open state or a full-open state.

  In order to easily move the first and second hooks 50G and 50H by the opening / closing lever 50E, the first motor 54 is driven in conjunction with the operation of the stop switch 6D to release the locked state of the first hook 50G. After that, it is preferable to reversely rotate the first motor 54 and return it to the initial position so that the distance between the right end portion of the long hole 87A formed in the first connecting arm 87 and the pin 54C is kept large. is there.

  In order to make the rotation state of the first hook 50G visible from the outside of the upper cover 50D, a marker that rotates together with the first hook 50G is provided on the rear surface of the first hook 50G as shown in FIGS. Part 50R is attached. The marker portion 50R is a member that extends outward from the rear surface of the first hook 50G in the vicinity of the shaft 50F and protrudes outside the upper cover 50G, and is provided above the opening / closing lever 50E.

  When the first hook 50G and the pin 50K are in a locked state, as shown in FIG. 18, the marker portion 50R and the opening / closing lever 50E are close to each other in the up-down direction and are substantially in contact with each other.

  On the other hand, when the locked state of the first hook 50G and the pin 50K is released and the first hook 50G is rotated counterclockwise about the shaft 50F, the marker portion 50R is, as shown in FIG. It is located above the opening / closing lever 50E. That is, when the first motor 54 is driven and the lock state between the first hook 50G and the pin 50K is released and the opening / closing lever 50E is not operated, the marker unit 50R is opened and closed. The lever 50E is in a state of being separated in the vertical direction.

<Upper cover half-open state detection mechanism>
Next, the half-open detection sensor (“first detection means” in the claims) 120 for detecting the half-open state of the upper cover 50D and the contact body 125 will be described. The half-opening detection sensor 120 operates the stop switch 6D by an auxiliary operator who performs a handling operation in order to remove the grain entangled between the sandwiching trough 12 and the feed chain 12B. This is a sensor that stops and detects the half-open state of the upper cover 50D by driving the first motor 54 to release the engagement between the first hook 50G and the pin 50K.

  In order to arrange the detection sensor 120 and the contact body 125 in a compact manner using the internal space of the gear box case 73A, the half-open detection sensor 120 is provided on the front wall 50A of the threshing device 3, as shown in FIGS. The contact body 125 attached to the provided frame 121 and detected by the half-open detection sensor 120 is attached to a bracket 54F provided on the upper cover 50D. When the upper cover 50D is closed, the contact body 125 moves from the notch 73B of the gear box case 73A to the inside of the gear box case 73A. When the upper cover 50D is fully opened, the contact body 125 is not cut away. It passes through the portion 73B and moves upward of the gear box case 73A.

  FIG. 22 shows the position of the half-opening detection sensor 120 and the contact body 125 detected by the half-opening detection sensor 120 when the first hook 50G is engaged with the pin 50K and the upper cover 50D is in the closed state. When the upper cover 50D is closed, the contact body 125 is positioned below the half-open detection sensor 120, and the half-open detection sensor 120 is in an OFF state.

  FIG. 23 shows the positions of the half-open detection sensor 120 and the contact body 125 when the engagement of the first hook 50G and the pin 50K is released and the upper cover 50D starts to move counterclockwise by the biasing means 50P. When the movement of the upper cover 50D is started, the contact body 125 is positioned below the half-opening detection sensor 120, and the half-opening detection sensor 120 is turned off.

  In FIG. 24, the first hook 50G and the pin 50K are disengaged, the upper cover 50D is moved counterclockwise by the biasing means 50P, and the half-open detection sensor 120 and the contact body 125 when the upper cover 50D is in the half-open state. Indicates the position. When the upper cover 50D is in the half-open state, the contact body 125 is in contact with the half-open detection sensor 120, and the half-open detection sensor 120 is in the ON state.

  FIG. 25 shows that the first hook 50G and the pin 50K are disengaged, the upper cover 50D is further moved counterclockwise by the biasing means 50P, and the upper cover 50D is in contact with the half-open detection sensor 120 when the upper cover 50D is fully opened. The position of the body 125 is shown. When the upper cover 50D is fully opened, the contact body 125 is positioned above the half-open detection sensor 120, and the half-open detection sensor 120 is in an OFF state.

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

  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 cylinder 56 and the dust removal processing cylinder 57 via the pulley 71B, the belt 91, and the like, and is transmitted to the counter shaft 72 via the pulley 71C, the belt 92, and the pulley 72A. The rotation of the counter shaft 72 is transmitted to the handling cylinder 55 and the waste transporting device 58 via the gear box 73 and the handling cylinder shaft 55A.

  In order to facilitate maintenance and inspection work of the gear box 73, a meshing clutch for operating the connection / disconnection between the gear box 73 and the handling cylinder shaft 55A on the front side of the gear box 73 provided on the front side of the handling chamber 50; A handling cylinder clutch 74 such as a claw clutch may be provided. In order to reduce the number of parts constituting the clutch, it is preferable to provide the handling cylinder clutch 74 on the same axis as the handling cylinder shaft 55A.

  Further, a handling cylinder brake 75 such as a wet multi-plate brake for stopping the rotation of the handling cylinder shaft 55A can be further provided on the transmission downstream side of the handling cylinder clutch 74 in order to urgently stop the driving of the handling cylinder 55. . In order to facilitate maintenance and inspection work of the handling cylinder brake 75, it is preferable to support the handling cylinder brake 75 on a shaft 75B provided in parallel with the handling cylinder shaft 55A on the lower side of the gear box 73. The shaft 75B is interlocked with a spur gear fixed to the barrel 55A. When the barrel brake 75 brakes the shaft 75B, the rotation of the barrel 55A is stopped.

  As shown in FIG. 9, the rotation of the counter shaft 71 is transmitted to the input shaft 10 </ b> A via the pulley 71 </ b> D, the belt 93, and the pulley 10 </ b> D supported by the input shaft 10 </ b> A of the feed chain hydraulic continuously variable transmission 10. Is done. Further, the counter shaft 71 is rotated through the pulley 71E supported on the left side of the pulley 71D and the belt 94 through the first tang 53A, the first transfer spiral 53b, the second tang 53C, the second transfer spiral 53d, the dust discharge. It is transmitted to the fan 48, the swing sorting device 52, and the waste cutter 59.

  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. In order to easily rotate the feed chain 12B around a feed chain rotating shaft 35B provided upright on the left suspension base 35, as shown in FIG. 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. Since 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 and the conveying device 34 of the reaping device 4 via the lateral transmission shaft 36A, the traveling speed of the traveling device 2 is increased. V, the pulling speed of the pulling device 32 of the reaping device 4 and the transport speed VH of the transport device 34 are determined with a certain relationship. For example, when the traveling speed V of the traveling apparatus 2 is increased, the pulling speed of the pulling apparatus 32 of the reaping apparatus 4 and the conveying speed VH of the conveying apparatus 34 are also increased, and the traveling speed V of the traveling apparatus 2 is decreased. In this case, the pulling speed of the pulling device 32 of the reaping device 4 and the transport speed VH of the transport device 34 are also low. 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.

<Control device>
On the input side of the control device 85 provided in the cockpit 6, as shown in FIG. 10, a travel speed sensor 66 </ b> S for detecting the speed V of the travel device 2 and a 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 a speed adjusting dial for increasing / decreasing the speed VF of the feed chain 12B provided on the side surface of the upper cover 50D. 6A, a mode switch ("second detection means" in the claims) 6B for switching to the handling mode, 6C, a reverse rotation switch 6C that reversely rotates the rear 12B from the rear side to the front side, a grain sensor 34C that detects the presence or absence of a grain straw conveyed on the feed chain 12B, and a feed provided on the side surface of the upper cover 50D. A stop switch 6D that urgently stops the drive of the chain 12B, a start switch 6E that starts the engine 62, a reaping clutch 65F that transmits the rotation of the engine 62 to the reaping device 4, and a rotation of the engine 62 that is transmitted to the threshing device 3. A threshing clutch 90A, a discharge clutch 97A that transmits the rotation of the engine 62 to the glen tank 5, and a half-open detection sensor 120 that detects a half-open state of the upper cover 50D are 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 speed change motor 10E for driving the 10 trunnion shafts 10F; a first motor 54 for driving a first hook 50G for maintaining the upper cover 50D of the handling chamber 50 in a locked state; The second motor 74A for driving the barrel clutch 74 for intermittent transmission of the engine 62 and the barrel 55 and the third motor 75A for intermittently connecting the barrel brake 75 for emergency stop of the barrel 55 are predetermined output interface circuits. Connected through.

  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 lever 38 and an auxiliary rod 38A are provided below the handling lever 38. When switching to the handling mode, the handling lever 38 is swung upwardly about the shaft 38B in order to place the handling grain cereal on the auxiliary basket 38A and the feed chain 12B. Switch from state to unregulated state. A switch (mode switch) 38C that is turned ON / OFF in conjunction with an operation of swinging the handle lever 38 can be provided, and the switch 38C can be used as the mode switch 6B.

<Driving and stopping the feed chain>
Next, a method for driving / stopping the feed chain 12B of this embodiment will be described.

(First feed chain drive method)
FIG. 11 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.

(Second feed chain drive method)
FIG. 12 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 within a range of 10 to 20% by the governing dial 6A.

Formula 3 VF = 0.25-0.5 * VH1
<How to open the top cover halfway>
Next, a method for opening the upper cover 50D in a half-open state will be described with reference to FIG.

  In the handling operation of the combine, the threshing part transport device 12 may be clogged with cereals. In order to eliminate clogging of cereals, it is necessary to suspend the handling operation, stop the engine 62, and perform a removing operation of pulling out the stuffed cereals from the threshing unit transporting device 12. In the removing operation, when the upper cover 50D is fully opened, the cereal grains that are not pulled out and are held by the threshing section transport device 12 fall from the threshing section transport apparatus 12 or enter the inside of the handling chamber 50. Since there is a possibility, it is preferable to pull out only the stuffed cereal with the upper cover 50D in a half-open state. Therefore, in this embodiment, the upper cover 50D can be held in a half-opened state, and the removal work of pulling out the stuffed cereals from the threshing section transport device 12 is facilitated.

  In the following description, the locked state of the first hook 50G means a state where the first hook 50G is engaged with the pin 50K, and the released state of the first hook 50G means that the upper cover 50D is rotated. Also means a state where the pin 50K is not engaged. The locked state of the second hook 50H refers to a state where the second hook 50H can be engaged with the pin 50N, and the released state of the second hook 50H refers to the pin 50N engaged even when the upper cover 50D rotates. The state that does not.

  In step S1, 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 continues to drive the engine 62 and maintains the upper cover 50D in the closed state. To do.

  On the other hand, if it is determined that there is an input from the stop switch 6D, the process proceeds to step S2.

  In step S <b> 2, the control device 85 includes a reaping clutch 65 </ b> F provided between the engine 62 and the reaping device 4, a threshing clutch 90 </ b> A provided between the engine 62 and the threshing device 3, and the engine 62 and the glen tank 5. It is determined whether or not there is an input of the discharge clutch 97A provided therebetween, and there is no input of all the clutches of the cutting clutch 65F, the threshing clutch 90A, and the discharging clutch 97A, that is, the cutting clutch 65F and the threshing clutch 90A, If it is determined that all the clutches of the discharge clutch 97A have been released, the engine 62 continues to be driven and the upper cover 50D is kept closed.

  On the other hand, any of the reaping clutch 65F, the threshing clutch 90A, and the discharge clutch 97A has one clutch input, that is, any of the reaping clutch 65F, the threshing clutch 90A, and the discharge clutch 97A is connected to one clutch. When it is determined that the engine 62 is in the state, the process proceeds to step S3 and the drive of the engine 62 is stopped.

  In step S4, it is determined whether or not there has been an input from the mode switch 6B for switching between the normal cutting operation and the handling operation. If it is determined that there is no input from the mode switch 6B, that is, the normal cutting operation, the top cover 50D is kept closed.

  On the other hand, if it is determined that the mode switch 6B is input, that is, it is in the hand-operated working state, the process proceeds to step S5, and the first transmission motor 10C is driven to move the trunnion shaft 10F of the pressureless continuously variable transmission 10 to the neutral position. To stop the drive of the feed chain 12B, and the first motor 54 is driven to release the lock state of the first hook 50G and the pin 50K so that the upper cover 50D is opened halfway. In addition, the operator who has performed the handling operation notifies the operator who has boarded the cockpit 6 that the upper cover 50D is in a half-opened state and is working on the cereal entangled with the threshing section transport device 12. For this reason, it is preferable to sound a buzzer when the upper cover 50D is in a half-open state.

  In FIG. 20, the first motor 54 rotates in the clockwise direction, and the connecting arm 86 that connects the first motor 54 and the first hook 50 </ b> G moves from the upper side to the lower side of the first motor 54. Show.

<How to close the upper cover after half-opening>
Next, a method of closing the upper cover 50D after the upper cover 50D is half open will be described with reference to FIGS.

  In a state where the lock state of the first hook 50G and the pin 50K is released by driving the first motor 54, 54C standing on the arm 54B of the first motor 54 connects the first motor 54 and the first hook 50G. Since the first connecting arm 87 is engaged with the end of the long hole 87A opened, the first hook 50G is moved by the pulling operation to pull down the upper cover 50D, and the pin 50K is locked. I can't go back to it. In this state, as shown in FIG. 20, the marker portion 50R is positioned above the opening / closing lever 50E.

  Therefore, in order to move the first hook 50G by the pulling-down operation that lowers the upper cover 50D downward to return to the locked state with the pin 50K, the stop switch 6D is operated again, as shown in FIG. The first motor 54 is rotated counterclockwise, and the connecting arm 86 connecting the first motor 54 and the first hook 50G is moved from the lower side of the first motor 54 to the upper side. After releasing the engagement with the end of the long hole 87A of the one connecting arm 87, the first cover 50D and the pin 50K are locked and the upper cover 50D is closed by a pulling operation that lowers the upper cover 50D downward. Can be.

  In this state, as shown in FIG. 21, the marker unit 50R is positioned close to the upper side of the opening / closing lever 50E, and the stop switch 6D has an alternate operation in order to improve the operability of the stop switch 6D. It is preferable to employ a switch for performing the above.

  In the above-described embodiment, the stop switch 6D is operated again, the first motor 54 is rotated counterclockwise, and the connecting arm 86 is moved upward from the lower side of the first motor 54. The pin 54C of the first connecting arm 87 is disengaged from the end of the elongated hole 87A of the first connecting arm 87, but the first motor 54 is automatically turned off when a predetermined time elapses after the stop switch 6D is operated. By rotating clockwise, the connecting arm 86 is moved upward from below the first motor 54 to disengage the pin 54C of the first motor 54 from the end of the elongated hole 87A of the first connecting arm 87. It can also be made.

<How to restart the engine>
Next, a method for restarting the engine 62 will be described with reference to FIG.

  In step S6, the control device 85 determines whether or not the start switch 6E has been input. If it is determined that the start switch 6E has not been input, the control device 85 does not start the engine 62.

  On the other hand, if it is determined that the start switch 6E has been input, the process proceeds to step S7.

  In step S7, the control device 85 determines whether there is an input from the threshing clutch 90A provided between the engine 62 and the threshing device 3, and there is an input from the threshing clutch 90A, that is, the threshing clutch 90A is connected. If it is determined that the engine is in the state, the engine 62 is not started.

  On the other hand, when it is determined that there is no input of the threshing clutch 90A, that is, the connection of the threshing clutch 90A is released, the process proceeds to step S8.

  In step S8, the control device 85 determines whether or not there is an input from the half-opening detection sensor 120 provided in the threshing device 3, and when there is an input from the half-opening detection sensor 120, that is, when the upper cover 50D is determined to be in a half-open state. The engine 62 is not started.

  On the other hand, when there is no input from the half-open detection sensor 120, that is, when it is determined that the upper cover 50D is in the closed state or the fully open state, the process proceeds to step S9 and the engine 62 is started. The engine 62 is preferably started and stopped by opening and closing a supply valve (not shown) that supplies fuel to the engine 62.

DESCRIPTION OF SYMBOLS 1 Airframe frame 2 Traveling apparatus 3 Threshing apparatus 4 Harvesting apparatus 6D Operation tool 12 Threshing part conveyance apparatus 12A Holding rod 12B Feed chain 50 Handling chamber 50D Upper cover 62 Engine 85 Control apparatus 90A Threshing clutch 120 1st detection means

Claims (3)

  A traveling device (2) is provided below the machine body frame (1) on which the engine (62) is mounted, a mowing device (4) is provided in front of the airframe frame (1), and behind the mowing device (4). In the combine provided with the threshing device (3), a threshing portion transport device (12) for transporting the harvested cereal rice cake is provided on the side of the threshing device (3). (12B) and a clamping rod (12A) positioned above the feed chain (12B), and the clamping rod (12A) is urged toward the feed chain (12B) to provide the engine (62) When the operation tool (6D) arranged in the peripheral portion of the threshing section conveying device (12) is operated in a state where the threshing clutch (90A) that transmits the rotation to the threshing device (3) is connected, Stop engine (62) Both moving the clamping Ji杆 (12A) upward, Combine, characterized in that provided 該挟 Ji杆 and (12A) controller that enables removal of foreign matter between the feed chain (12B) to (85).   The lock mechanism for locking the clamping rod (12A) on the feed chain (12B) is provided, and when the operation tool (6D) is operated, the lock mechanism is unlocked. Combine as described.   An upper cover (50D) that covers the upper part of the handling room (50) of the threshing device (3) and includes the clamping rod (12A), and a first detection means that detects a half-open state of the upper cover (50D) ( 120), the threshing clutch (90A) is shut off, and the engine (62) can be started when the first detection means (120) does not detect the half-open state of the upper cover (50D). The combine according to claim 2.

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