JP6813011B2 - combine - Google Patents

Description

The present invention relates to a combine.

Conventionally, a sensor for detecting that a foreign substance is caught or a grain culm is clogged between the combine's feed chain and the pinching culm is provided, and based on the detection result of this sensor, the upper cover of the threshing device is opened halfway. (Patent Document 1) has been proposed.

Japanese Unexamined Patent Publication No. 2009-195169

However, the configuration of Patent Document 1 has a problem that the safety of the operator who is performing the manual handling work is insufficiently ensured when the engine is unexpectedly restarted. In addition, there is a problem that the upper cover may be opened during the cutting and harvesting work due to erroneous detection of the sensor or the like.

Therefore, a main problem of the present invention is to solve such a problem.

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

The invention according to claim 1 is provided with an engine (62), a harvesting device (4) for harvesting a grain harvester, and a threshing device (3) for threshing a grain harvester, and the harvesting device (3) is provided with a harvesting harvester. In the combine having the threshing section transporting device (12), the threshing section transporting device (12) is provided with a feed chain (12B) and a holding rod (12A) located above the feed chain (12B). The engine (62) is stopped and the holding rod (12A) is stopped based on the operation of the operation tool (6D) arranged in the peripheral portion of the threshing section transport device (12) and the operation of the operation tool (6D ). are moved upwards, then the foreign matter control device to be removed (85) between the該挟Ji杆(12A) and the feed chain (12B), the stop of the engine by the control unit (85) (62) The combine is provided with an opening / closing lever (50E) capable of moving the holding rod (12A) upward without the need for the combine harvester.

When the invention according to claim 2, further comprising a locking mechanism for locking the clamping Ji杆the (12A) on the feed chain (12B), the front Kimisao Sakugu (6D) is operated, the locking of the locking mechanism This is the combine according to claim 1, which has a configuration in which is released.

The invention according to claim 3 covers the upper part of the handling chamber (50) of the threshing device (3) and has the upper cover (50D) provided with the holding rod (12A) and the upper cover (50D) half-opened. When the first detection means (120) for detecting the state is provided, the threshing clutch (90A) is disengaged, and the half-open state of the upper cover (50D) is not detected by the first detection means (120). , The combine according to claim 2, wherein the engine (62) can be started.

According to the invention described in claim 1, when the steering Sakugu (6D) is operated, the engine (62) to move the clamping Ji杆(12A) upward to stop the, the clamping Ji杆(12A) Since the foreign matter between the and the feed chain (12B) can be removed, the engine (62) can be stopped to easily remove the foreign matter between the holding rod (12A) and the feed chain (12B). Efficiency can be increased.

According to the invention described in claim 2, in terms of the effects of the invention described in claim 1, when the steering Sakugu (6D) is operated, Kyoji杆the (12A) feed chain (12B) The lock mechanism that locks up is unlocked.

According to the invention of claim 3, in addition to exerting the effect of the invention of claim 2, the threshing clutch (90A) is disengaged, 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 room (50) is not detected, the engine (62) remains in the half-open state of the upper cover (50D). Can be started to prevent threshing from being blown out from the threshing device (3). In addition, the safety of the auxiliary worker for removing the grain rod or the like stuck in the threshing device (3) can be enhanced.

It is a left side view of the combine. It is a top view of the combine. It is a left side view of the main part of a threshing device. It is sectional drawing of the main part of a threshing apparatus. It is a front view of the main part of a combine. It is a front view of the main part of a combine. It is an installation explanatory view of the hydraulic continuously variable transmission for a feed chain. (A) is an enlarged cross-sectional view and (b) is an enlarged side view of the hydraulic continuously variable transmission for a feed chain. It is a main part transmission mechanism diagram 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 left side view of the main part of a transport device. It is an installation explanatory view of the other hydraulic continuously variable transmission for a feed chain. It is a partial cross-sectional plan view of a threshing device. It is sectional drawing of the main part of a threshing apparatus. FIG. 16 is an enlarged view of part E in FIG. It is explanatory drawing of the upper cover in a closed state. It is an enlarged view of F part of FIG. It is explanatory drawing of the drive method which drives the 1st motor and releases the 1st hook, and makes the upper cover half open state. It is explanatory drawing of the drive method which operates the opening / closing lever, releases the 1st and 2nd hooks, and makes the upper cover fully open state. It is explanatory drawing of the positional relationship between a half-opening detection sensor and a contact body in a state where the upper cover is closed. It is explanatory drawing of the positional relationship between a half-opening detection sensor and a contact body in a state where the 1st motor is driven and the 1st hook is released. It is explanatory drawing of the positional relationship between a half-opening detection sensor and a contact body in a state where the 1st motor is driven, the 1st hook is released, and the upper cover is half-opened. It is explanatory drawing of the positional relationship between a half-opening detection sensor and a contact body in a state where the opening / closing lever is operated to release the 1st and 2nd hooks, and the upper cover is fully opened. It is a partial cross-sectional plan view of the threshing device, and is the explanatory view of the positional relationship between the half-opening detection sensor and the contact body. It is explanatory drawing of the engagement state of the 2nd hook. It is explanatory drawing of the method of decelerating the engine, stopping the feed chain, and making the upper cover half-open. 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, the directions are shown for convenience with the front side as the front side, the rear side as the rear side, the right hand side as the right side, and the left hand side as the left side when viewed from the operator. The configuration is not limited.

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 aircraft frame 1, and threshing / sorting is performed on the upper left side of the aircraft frame 1. A threshing device 3 for harvesting the grain is provided, and a harvesting device 4 for harvesting the grain rod in the field is provided in front of the threshing device 3. The grains that have been threshed and sorted by the threshing device 3 are stored in a grain tank 5 provided on the right side of the threshing device 3, and the stored grains are discharged to the outside by the discharge cylinder 7. Further, a driver's seat 6 on which the operator rides is provided on the upper right side of the airframe frame 1, and an engine room 8 on which the engine 62 is mounted is provided below the driver's seat 6.

<Mowing device>
The cutting device 4 is attached to a cutting frame 30 which is a main frame formed by a post-cutting frame 28 and a cutting transmission case 29 horizontally provided at the tip of the post-cutting frame 28 in the left-right direction. The base of the frame 28 after cutting is attached to a portion uneven to the right side of the lateral transmission cylinder 36 rotatably supported on the upper part of the pair of left and right suspensions 35, 35 on which the machine frame 1 is erected. ..

The cutting device 4 includes a weed culm 31 provided at the lower part of the front side for weeding the planted culm, a raising device 32 provided behind the weed culm 31 for causing a fallen planted culm, and a raising device. A cutting blade device 33 for cutting the root of the planted grain culm provided at the lower part behind the 32, and a cutting grain culm provided behind the raising device 32 and the cutting blade device 33 are placed on one side of the grain removing device 3. It is provided with a transport device 34 for transporting to the provided grain removal section transport device 12. The transport device 34 is composed of a stock root transport device 34A for transporting the stock root side of the harvested grain culm and a tip transport device 34B for transporting the tip side, and from this transport device 34 to the threshing section transport device 12. In order to prevent the culm from falling when taking over, a support 37 is provided on the inner side of the front end of the threshing section transport device 12 from the rear end of the transport device 34 to the front end of the handling chamber 50. Has been done.

A grain rod sensor that detects the amount of grain rods transported to the front and rear parts of the transport device 34 of the harvesting device 4 where the harvested grain rods merge, the front side of the feed chain 12B, and the like in order to increase the grain recovery rate. It is preferable to provide 34C and switch the transport speed of the feed chain 12B according to the output value of the grain rod sensor 34C.

As shown in FIG. 13, the terminal portion of the transport device 34 has a terminal portion of the transport device 34 in order to prevent the posture of the grain rod inherited from the terminal portion of the transport device 34 to the start end portion of the feed chain 12B. A hand-held lever (“hand-handling restricting member” in the claim) 38 that swings up and down around a shaft 38B extending in the left-right direction of the above is provided, and below the hand-handling lever 38. An auxiliary lever 38A made of a spring plate or the like attached by a fastening member such as a bolt is provided at the end of the transport device 34.

The hand-handled lever 38 is formed to have a width in the left-right direction of the hand-handled rod 12A, and the rear end portion of the hand-handled lever 38 is used to prevent malfunction of the hand-handled lever 38 due to vibration or the like. It extends below the front part of the lever 12A. Further, the auxiliary rod 38A is formed in the width in the left-right direction of the feed chain 12B, and the front end portion of the auxiliary rod 38A extends to the front side of the front end portion of the hand-held lever 38, and the rear end portion is , It extends to the rear part of the rod 12A.

During normal cutting and threshing work, the hand-held lever 38 is swung downward around the shaft 38B in order to restrict the grain rod from being placed on the auxiliary rod 38A and the feed chain 12B (regulation). State). On the other hand, during the hand-handling work, in order to mount the grain rod on the auxiliary rod 38A and the feed chain 12B, after lifting the front part of the rod 12A upward, the hand-held lever 38 is centered on the shaft 38B. Swing upwards (unregulated state).

In addition, in order to improve the operability of the hand-handled lever 38, the hand-handled lever 38 is arranged so as to be offset from the hand-held lever 12A in the left-right direction, or the length of the hand-handled lever 38 in the front-rear direction is shortened. Therefore, it is possible to prevent the rear end portion of the hand-held lever 38 from extending below the sill 12A.

Further, in order to maintain a good posture of the grain rod inherited from the transfer device 34 to the threshing section transfer device 12, auxiliary transfer is performed to a portion uneven to the right of the upper surface or the lower surface of the support 37 facing the tip transfer device 34B. Devices can also be placed.

The auxiliary transport device is provided with a lugged belt and a butt belt that move from the front side to the rear side in order to transport the tip of the grain rod inherited from the tip transfer device 34B to the feed chain 12B. Further, the auxiliary transfer device transmits the rotation of the counter shaft 71, which will be described later, via the output shaft B of the hydraulic continuously variable transmission 10 for the feed chain, thereby transmitting the moving speed of the lugged belt or the like to the feed chain 12B. It is preferable that the speed is the same as the moving speed of. Instead of the hydraulic continuously variable transmission 10 for the feed chain, 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 suspension base 35 on the left side is attached to the upper side of the base 35A erected on the airframe frame 1. A feed chain rotation shaft 35B extending in the vertical direction that rotatably supports the base of the lateral transmission frame 35C that pivotally supports the left side portion of the lateral transmission cylinder 36 is provided on the front portion on the left side of the suspension base 35. There is. Further, in order to easily perform maintenance and inspection work of devices such as the weed sill 31 and the pulling device 32 of the cutting device 4 by rotating the lateral transmission cylinder 36 around the feed chain rotation shaft 35B, the lateral transmission frame The 35C is formed in an arc shape having a downwardly convex portion from the base portion to the tip portion in the front view. As will be described later, the threshing section transport device 12 that transports the grain rod also rotates around the feed chain rotation shaft 35B.

The suspension base 35 on the right side is attached to the upper side of the base 35A erected on the machine frame 1. A support member 35D 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 is composed of a front side support member divided into a substantially semicircular shape and a rear side support member. When the right side 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 side support members and perform maintenance on the cutting device 4 or the transmission 65. When the cutting device 4 is moved to the left side by rotating the cutting device 4, the front and rear support members are disengaged and the lateral transmission cylinder 36 is pulled out forward. Further, in order to increase the rigidity of the left and right suspensions 35, 35 against deformation and the like, a connecting frame 35E is erected at the intermediate portion of the left and right suspensions 35, 35 in the vertical direction.

The rotation of the engine 62 is transmitted to the traveling hydraulic continuously variable transmission 66 via the 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 was supported by the right end of the lateral transmission shaft 36A built 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 by the pulley 36A and rotates the lateral transmission cylinder 36 and the lateral transmission shaft 36A. The rotation transmitted to the lateral transmission shaft 36A is transmitted to the raising device 32, the cutting blade device 33, the transport device 34, etc. of the cutting device 4 via the transmission shafts (not shown) built in the frames 27 and 28. Will be done.

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

<Threshing device>
As shown in FIG. 4, the threshing device 3 is provided with a handling chamber 50 for threshing culms in the upper part on the front side, and a sorting chamber 51 for sorting the threshed grains on the lower side of the handling room 50. There is.

In the handling chamber 50, a handling barrel 55 having a plurality of handling teeth is supported by a handling barrel shaft 55A pivotally supported by the front and rear walls 50A and 50C. Then, a grain culm supply port 26A is opened in the lower left side of the front wall 50A of the handling chamber 50, a handling port 26B is opened in the lower part of the left wall 50B along the handling cylinder 55, and the lower left side of the rear wall 50C is opened. The straw outlet 26C is opened in the culm. Further, on the left side of the handling chamber 50, a threshing section transporting device 12 that sandwiches the stock base of the grain rod and transports it backward along the handling port 26B is installed side by side, and the threshing section transported by the threshing section transporting device 12 is placed. The completed straw grain stick is taken over by the straw transport device 58 provided behind the threshing section transport device 12, and then transported further rearward, then cut by a pair of straw 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 first wall insert 53A that blows air to the sheave at the front of the swing sorting device 52 and a swing sorting device in the lower part of the sorting chamber 51. The first gutter 53B that collects the leaking grains, the second wall insert 53C that blows air to the sheave at the rear of the rocking sorting device, and the grain with the branch stalks leaking from the rocking sorting device attached. That is, the second gutter 53D for collecting the second item is installed in order from the front side. The grains collected by the first gutter 53B are transferred to the grain tank 5 by the first transfer spiral 53b installed in the first gutter 53B, and the grains and the like collected by the second gutter 53D are two. It is transferred to the second processing chamber by the second transfer spiral 53d installed in the number receiving gutter 53D.

The rear part on the right side of the handling chamber 50 communicates with the dust treatment chamber, and inside the dust treatment chamber, a dust treatment cylinder 57 having a screw blade body on the outer peripheral surface is pivotally supported in the front-rear direction to perform dust treatment. On the front side of the chamber, a second processing chamber is provided for processing and reducing the second product. Inside the second processing chamber, a second processing cylinder 56 having intermittent spiral blades on the outer peripheral surface is pivotally supported. Further, on the rear upper side of the swing sorting shelf, a dust exhaust fan 48 that sucks straw dust and the like generated during threshing and sorting and discharges them to the outside of the machine is arranged.

<Threshing section transport device>
As shown in FIGS. 3 and 6, the threshing section transport device 12 includes a holding rod 12A located on the upper side and a feed chain 12B located on the lower side. The holding rod 12A is urged toward the feed chain 12B side by an urging means 14 such as a spring with respect to the upper cover 50D of the handling chamber 50. The feed chain 12B is driven by being wound around the tension wheels 17B and 17B rotatably supported at the front and rear ends of the upper chain rail 18A and the drive sprocket 17A provided between the tension wheels 17B and 17B, respectively. It is an endless chain to be done. The acting-side feed chain 12B mounted on the upper chain rail 18A sandwiches the holding rod 12A and the stock of the grain culm in the process of moving from the front side to the rear. In addition, in order to prevent the transported grain rod from being wound around the end portion of the feed chain 12B, the rear tension ring 17B uses an idle sprocket provided with winding prevention plates 17D on both sides. Is preferable.

On the side surface of the upper cover 50D, a speed control dial is provided so that an auxiliary worker who is performing the hand-handling work can easily adjust the speed of the speed VF1 of the feed chain 12B during the hand-handling work to improve workability. 6A is provided. Further, in order to efficiently adjust the speed of the speed VF of the feed chain 12B according to the amount of the hand-handled grain rod, the speed governor 6A is arranged around the auxiliary sill 38A on which the hand-handled grain rod is placed. Alternatively, the speed governor 6A may be arranged on the side panel of the driver's seat 6 in order for the operator seated in the driver's seat 6 to efficiently assist an unfamiliar auxiliary worker.

In addition, together with the speed governor 6A or in place of the speed governor 6A, a speed control pedal 45 for adjusting the speed of the speed VF of the feed chain 12B during the hand-handling work is provided on the machine frame 1 in front of the threshing device 3. You can also do it.

In a side view, the holding rod 12A is provided so as to rise backward along the handling port 26B from the grain culm supply port 26A to the straw discharging port 26C of the handling room 50. The upper chain rail 18A on which the acting side feed chain 12B is placed is inclined backward from the front end of the horizontal axis transmission cylinder 36 and then gently inclined backward to the front of the grain culm supply port 26A of the handling chamber 50. After reaching, the culm supply port 26A of the handling room 50 to the straw discharge port 26C are inclined backward along the handling port 26B facing the holding culm 12A. After that, after extending horizontally from the straw outlet 26C to the rear, it tilts backward to reach the rear rear end of the front end portion of the tip transfer device 34A. It is preferable that the upper chain rail 18A has a split structure that can be divided in the front-rear direction in order to easily change the length of the threshing portion transport device 12 in the front-rear direction when the number of cutting rows of the cutting device 4 is changed. is there.

The lower chain rail 18B on which the non-acting side feed chain 12B is placed is inclined backward from the upper front end of the counter shaft 71 that transmits the rotation of the engine 62 to the drive sprocket 17A to reach the rear end. The rear end of the lower chain rail 18B is provided in front of the rear tension wheel 17B and below the straw outlet 26C.

A guide 18D that guides the non-acting side 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 is formed in a substantially 1/4 circular shape. 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 oil or the like.

On the lower side of the lower chain rail 18B, an upper chain rail 18A and a support frame 19 for supporting the lower chain rail 18B are provided by a rail connecting plate 18C.
That is, the feed chain 12B is supported by the support frame 19. Further, the connecting plate 18E connected to the upper chain rail 18A and the lower chain rail 18B prevents straw debris falling from the feed chain 12B during culm transport from falling into the drive unit of the sorting chamber 51. A straw guide plate (not shown) is attached to the culm.

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

In order to prevent interference with the feed chain hydraulic continuously variable transmission 10 and the like, the support frame 19 is viewed from the front end portion of the input shaft 10A of the feed chain hydraulic continuously variable transmission 10 and the gearbox 68. After extending rearward between the output shafts 68B of the above, 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, the guide 18D is inclined backward along the lower side of the lower chain rail 18B, and is substantially in the front-rear direction of the lower chain rail 18B. It reaches the central part.

As a result, when performing maintenance and inspection of the feed chain 12B, the hydraulic continuously variable transmission 10 for the feed chain, etc., the support frame 19 is rotated around the feed chain rotation shaft 35B, and the feed chain 12B is rotated. This can be easily done 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 rotation shaft 35B is installed in front of the front of the feed chain hydraulic continuously variable transmission 10. ing.

In the side view, as shown in FIG. 3, the front side tension wheel 17B is provided in the cutting device 4 near the front of the horizontal axis transmission cylinder 36 that transmits the rotation of the engine 62, and the rear side tension wheel 17B is provided. It is provided near the rear of the front end portion of the tip transfer device 34A. The drive sprocket 17A is arranged between the front and rear tension wheels 17B and 17B in the front-rear direction and is unevenly arranged on the front tension wheel 17B side, and the horizontal axis transmission cylinder 36 and the feed chain 12B. It is located approximately in the center of the counter shaft 71 that transmits the rotation of the engine 62. Further, in the vertical direction, it is located substantially in the center of the support frame 19 extending rearward to support the counter shaft 71 and the lower chain rail 18B and the like. Further, between the tension wheel 17B on the front side and the drive sprocket 17A, a tension sprocket 17C whose base is supported by a drive shaft 68D, which will be described later, is provided.

As a result, the feed chain 12B moves upward from the drive sprocket 17A, then moves along the tension sprocket 17C to reach the front tension wheel 17B, and from the front tension wheel 17B to the upper chain rail 18A. The upper side moves toward the rear tension wheel 17B. After that, the feed chain 12B moves from the rear tension 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 to the front guide 18D. After moving to, it moves along the guide 18D to reach 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 via the counter shaft 71, accelerated and decelerated by the carrier box 68, and then the threshing section transport device 12 is driven. It is transmitted to the output shaft 68B connected to the sprocket 17A.

Both sides of the counter shaft 71 are pivotally supported by a pair of support members 80 erected forward in the vertical center of the front wall 50A of the threshing device 3. The rotation of the engine 62 is transmitted to the counter shaft 71 via the pulley 71A supported by the right end of the counter shaft 71.

The rotation transmitted to the counter shaft 71 is transmitted to the handling cylinder 55 via the pulley 71C supported on the left side of the pulley 71A and the belt 92, and is transmitted to the right side of the pulley 71E supported on the left end 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. As shown in FIG. 8, the rotation transmitted to the input shaft 10A of the hydraulic continuously variable transmission 10 for the feed chain is transmitted to the gear box 68 via the output shaft 10B, and is accelerated or decelerated by the gear of the gear box 68. It is 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 by 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 and the drive sprocket 17A by the coupling 68C are used. The connection is released, and the rotation of the engine 62 is not transmitted to the drive sprocket 17A, so that the feed chain 12B, the guide 18D, and the like can be safely replaced. Instead of the coupling 68C connecting the output shaft 68B and the drive shaft 68D, a meshing clutch and a claw clutch may be provided at the ends of the opposite 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 11B which is erected forward at a portion of the front wall 50A of the threshing device 3 which is biased downward in the vertical direction. Further, in order to effectively utilize the space on the front side of the grain removal device 3, a hydraulic continuously variable transmission 10 for a feed chain is attached to the left side surface of the carrier box 68, and further, a hydraulic continuously variable transmission for a feed chain is attached. A first speed change motor 10C for rotating the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 is attached to the rear side of the 10.

Further, as shown in FIG. 14, a first transmission motor 10C for rotating the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 and a first transmission motor 10C are located behind the feed chain hydraulic continuously variable transmission 10. A second speed change motor 10E, which has a larger output than the speed change motor 10C and rotates the trunnion shaft 10F at a high speed, can be installed 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 tip of the fan-shaped gear 10G whose base end is supported by the trunnion shaft 10F. There is. The control device 85, which will be described later, drives the first transmission motor 10C to rotate the trunnion shaft 10F in the normal cutting mode, and drives the second transmission motor 10E to rotate the trunnion shaft 10F in the hand-held mode. The second speed change motor 10E freely rotates in the cutting mode, and the first speed change motor 10C freely rotates in the hand-held mode.

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

Further, the first transmission motor 10C shifts the feed chain hydraulic continuously variable transmission 10 in conjunction with the drive speed of the cutting device 4. Specifically, it is preferable to detect the speed of rotation output from the traveling hydraulic continuously variable transmission 66 and transmitted to the reaping device 4, and operate the first speed change motor 10C according to this rotation speed. is there.

The front end of the rear plate 11B and the rear end of the front plate 11A provided on the connecting frames 35E of the left and right suspensions 35, 35 are connected by loosely inserted pins to reduce vibration. .. The rear portion of the rear plate 11B is connected to the bracket on the counter shaft 71 side by fastening means such as bolts. Further, below the lateral transmission shaft 36A, a cutting position sensor 36S for detecting the vertical rotation position of the frame 28 after cutting is provided.

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

In order to effectively utilize the space on the lower front side of the grain removal device 3 and prevent interference between the feed chain 12B, the belt 93, etc. when the feed chain 12 rotates, the input shaft 10A of the hydraulic continuously variable transmission 10 for the feed chain And the output shaft 10B and the output shaft 68B of the gear box 68 are provided so as to be vertically vertical.

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

In order to facilitate the winding of the feed chain 12B, the output shaft 68B of the gearbox 68 is provided above the output shaft 10B of the hydraulic continuously variable transmission 10 for the feed chain, and the length of the feed chain 12B is shortened. 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 the hinges 100 provided at three front and rear positions, and is between the upper cover 50D and the machine frame of the threshing device 3. Is provided with an urging means 103 such as a gas spring that moves the upper cover 50D upward (in the front view, the upper cover 50D is counterclockwise). At the time of cutting work, the upper cover 50D is in a closed state in which the upper cover 50D covers the upper part of the handling cylinder 55 and the holding rod 12A contacts the feed chain 12B. Further, in order to keep the upper cover 50D in the closed state, a lock mechanism including the first and second hooks 50G, 50H, pins 50K, 50N and the like is provided.

In order to easily remove the foreign matter stuck between the feed chain 12B and the pinching rod 12A or the pinching rod 12C, as shown in FIGS. 15 to 19, a stop switch (claim) is provided on the front surface of the upper cover 50D. "actuator" in the first motor (claim driven in conjunction with the operation of the "steering Sakugu") 6D) 54 is provided in the. Note that FIG. 18 shows both the half-opened state and the fully-opened state of the upper cover 50D for ease of understanding.

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

To open the side of the holding rod 12A of the upper cover 50D half-open, that is, half-open, the first hook (“hook” in the claim) 50G and the pin 50K extending in the front-rear direction in the handling chamber 50 are locked. Is released, and the second hook 50H, which has a longer total length than the first hook 50G, and the pin 50N are locked. Further, in order to open the upper cover 50D, that is, to make it fully open, the locked state of the first hook 50G and the pin 50K is released, and the pin 50N extending in the front-rear direction to the second hook 50H and the handling chamber 50. It is also performed by releasing the locked state with.

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

The half-open state refers to a state in which the side portion of the holding rod 12A of the upper cover 50D is moved upward by approximately 50 to 100 mm to remove foreign matter stuck on the feed chain 12B, and the fully-open state means the upper cover. This refers to a state in which the side portion of the 50D holding rod 12A is moved upward by approximately 300 to 450 mm to perform maintenance / inspection work on the feed chain 12B.

As shown in FIG. 20, the first motor 54 is connected to the first hook 50G via the connecting arm 86. In addition, in FIG. 20, in order to facilitate understanding, the half-opened state and the fully-opened state of the upper cover 50D are shown together.

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

One side of the arm 54B is mounted on 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 side of the first connecting arm 87 is a support shaft 50M extending in the front-rear direction provided on the front surface of the upper cover 50D. It is supported so that it can swing in the left-right direction around the center.

An elongated hole 87A having a major axis in the left-right direction is formed on the right side portion of the first connecting arm 87, and a pin 54C is fitted in the elongated hole 87A. Further, a support shaft 87B extending in the front-rear direction is provided on the upper portion of the first connecting arm 87.

The second connecting arm 88 includes a plate portion 88B in which an elongated hole 88A having a major axis 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. Is formed from. Further, the right end portion of the rod-shaped portion 88C is connected to the support shaft 87B of the first connecting arm 87.

The third connecting arm 89 is formed in a substantially semi-elliptical shape when viewed from the front, and a support shaft 89A extending in the front-rear direction is provided at the upper end of the third connecting arm 89. It is fitted into the elongated hole 88A of the plate portion 88B. Further, 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 the urging means 87C including a spring spring or the like that rotates the first connecting arm 87 clockwise around the support shaft 50M when viewed from the front are attached to the lower portion of the bracket 54F and the front surface of the second hook 50H. There is.

As a result, as shown in FIG. 27, when the first hook 50G and the pin 50K are disengaged and the upper cover 50D moves from the closed state to the half-opened state, the compressive force of the urging means 87C causes the second hook. After the right side surface of the 50H moves upward while sliding in contact with the pin 50N, the tip of the second hook 50H is engaged with the pin 50N. Then, when moving to the fully open the top cover 50D by operating the opening and closing levers 5 0E from half-opened state, after the second hook 50H is rotated counterclockwise around the shaft 50F, the second hook 50H The base end portion of the upper cover 50D 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, it adheres to the grain rod conveyed by the feed chain 12B provided on the left side of the gearbox case 73A due to the compressive force of the urging means 87C. The right side surface of the second hook 50H moves downward while sliding in contact with the pin 50N without interfering with the isolation wall 50T that prevents straw debris from entering the handling chamber 50.

When the first motor 54 rotates counterclockwise in front view in conjunction with the operation of the stop switch 6D, the pin 54C of the arm 54B mounted on the first motor 54 is on the right side of the elongated hole 87A of the first connecting arm 87. Engage with the end and rotate the first connecting arm 87 counterclockwise around the support shaft 50M.

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

When the second connecting arm 88 moves to the right side, the support shaft 89A fitted in the elongated 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 centering on the shaft 50F. Rotate counterclockwise.

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

As a result, foreign matter stuck between the feed chain 12B and the pinching rod 12A or the pinching rod 12C can be easily removed, and a large amount of grains, paddy, etc. in the handling chamber 50 can be prevented from being dispersed to the outside of the machine body. can do.

After the locked state of the first hook 50G and the pin 50K is released, the second hook 50H, which has a longer overall length than the first hook 50G whose upper end is supported by the shaft 50F, engages with the pin 50N and locks. 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 pinching rod 12C.

As shown in FIG. 21, an opening / closing lever 50E is provided in order to open the upper cover 50D when the first motor 54 cannot be driven due to disconnection or the like.

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 opening / closing lever 50E is a cylinder rotatably fitted to the shaft 50F between the first hook 50G and the second hook 50H. It is supported by the shaft 50Q.

The base of the opening / closing lever 50E is provided with a piece 50L that extends toward the first and second hooks 50K and 50H and engages with the base ends of the first and second hooks 50K and 50H. Further, the cylindrical shaft 50Q is fitted with an urging means 50P including a torque spring or the like that keeps the first hook 50K in a locked state, and one end side of the urging 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 (counterclockwise in front view) about the cylindrical shaft 50Q, 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 with respect to the cylindrical shaft 50Q in a state where the piece 50L is engaged with the base of the first hook 50K, the first hook 50K moves upward with the shaft 50F as the center (in front view, the first hook 50K). The lock state with the pin 50K is released by moving the 1 hook 50K to the counterclockwise direction) side, and the upper cover 50D is moved upward with the pin 101 as the center by the urging 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 open / close lever 50E is moved further upward with the cylindrical shaft 50Q as the center while the piece 50L is engaged with the base of the second hook 50H, the second hook 50H moves upward with the shaft 50F as the center (in front view, the second hook 50H). The lock state with the pin 50N is released by moving the 2 hook 50H to the counterclockwise direction) side, and the upper cover 50D is further moved upward with the pin 101 as the center by the urging means 103 to be in the fully opened state. As a result, even when the first motor 54 cannot be driven due to disconnection or the like, the upper cover 50D can be opened halfway or fully open by operating the opening / closing lever 50E.

When the first hook 50G is moved upward with respect to the shaft 50F by the opening / closing lever 50E, the third connecting arm 89 connected to the first hook 50G moves to the left with the shaft 50F as the center. However, since the elongated hole 88A is formed in the second connecting arm 88, the support shaft 89A of the third connecting arm 89 can move in the elongated hole 88A of the second connecting arm 88 in the left direction, and the upper portion can be moved. The cover 50D can be half-opened or fully opened.

Similarly, when the first hook 50G is moved upward with the shaft 50F as the center by the opening / closing lever 50E, the first hook 50G is connected to the first hook 50G via the second and third connecting arms 88 and 89. The connecting arm 87 moves to the left. However, since the elongated hole 87A is formed in the first connecting arm 87, the first connecting arm 87 is in a state in which the pin 54C provided in the arm 54B mounted on the first motor 54 is fitted in the elongated hole 87A. Can be moved to the left, and the upper cover 50D can be half-opened or fully opened.

In order to more 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 rotate the first motor 54 in the reverse direction to return it to the initial position so that the distance between the right end of the elongated hole 87A formed in the first connecting arm 87 and the pin 54C is maintained large. is there.

In order to make the rotating state of the first hook 50G visible from the outside of the upper cover 50D, as shown in FIGS. 18 and 20, on the rear surface of the first hook 50G, a marker that rotates together with the first hook 50G. The part 50R is attached. The marker portion 50R is a member that extends outward from the rear surface of the first hook 50G near the shaft 50F toward the outside of the machine body and projects to the outside of the upper cover 50G, and is provided above the opening / closing lever 50E.

When the first hook 50G and the pin 50K are locked, as shown in FIG. 18, the marker portion 50R and the opening / closing lever 50E approach each other in the vertical direction and come into substantially 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 rotates counterclockwise with respect to the shaft 50F, the marker portion 50R becomes as shown in FIG. It is located above the open / close lever 50E. That is, when the first motor 54 is driven to unlock the first hook 50G and the pin 50K and the opening / closing lever 50E is not operated, the marker portion 50R and the opening / closing are opened / closed. The lever 50E is separated in the vertical direction.

<Half-open state detection mechanism of top cover>
Next, the half-open detection sensor (“first detection means” in the claim) 120 for detecting the half-open state of the upper cover 50D and the contact body 125 will be described. In the half-opening detection sensor 120, in order to remove the grain rod entwined between the holding rod 12 and the feed chain 12B or the like, an auxiliary worker performing hand-handling work operates the stop switch 6D to operate the feed chain 12B. It is a sensor that stops and drives the first motor 54 to release the engagement between the first hook 50G and the pin 50K and detect the half-open state of the upper cover 50D.

In order to compactly arrange the detection sensor 120 and the contact body 125 by utilizing the internal space of the gearbox case 73A, as shown in FIGS. 22 to 26, the half-open detection sensor 120 is mounted on the front wall 50A of the threshing device 3. The contact body 125 attached to the provided frame 121 and detected by the half-opening detection sensor 120 is attached to the bracket 54F provided on the upper cover 50D. In the closed state of the upper cover 50D, the contact body 125 moves from the notch 73B of the gear box case 73A to the inside of the gear box case 73A, and in the fully open state of the upper cover 50D, the contact body 125 is notched. It passes through the portion 73B and moves upward of the gearbox case 73A.

FIG. 22 shows the positions of the contact body 125 detected by the half-open detection sensor 120 and the half-open detection sensor 120 when the first hook 50G engages 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 located below the half-open detection sensor 120, and the half-open detection sensor 120 is in the OFF state.

FIG. 23 shows the positions of the half-open detection sensor 120 and the contact body 125 when the upper cover 50D starts to move counterclockwise by the disengagement of the first hook 50G and the pin 50K by the urging means 50P. At the start of movement of the upper cover 50D, the contact body 125 is located below the half-open detection sensor 120, and the half-open detection sensor 120 is in the OFF state.

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

In FIG. 25, the first hook 50G and the pin 50K are disengaged, the upper cover 50D is further moved counterclockwise by the urging means 50P, and the upper cover 50D comes into contact with the half-open detection sensor 120 in the fully opened state. It shows the position of the body 125. When the upper cover 50D is in the fully open state, the contact body 125 is located above the half-open detection sensor 120, and the half-open detection sensor 120 is in the 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 is transmitted to the first path A transmitted to the feed chain hydraulic continuously variable transmission 10 and the second path B transmitted to the traveling hydraulic continuously variable transmission 66. Then, it is branched into the third path C which is transmitted to the gear box 39 in front of the Glen tank 5 and is transmitted.

In the first path A transmitted to the hydraulic continuously variable transmission 10 for the feed chain, the rotation of the engine 62 is the pulley 70A supported by the crankshaft 70, the belt 90, and the pulley 71A supported by the counter shaft 71. Is transmitted to the counter shaft 71 via. The first path A is provided with a threshing clutch 90A that connects and blocks transmission to the downstream side of transmission from 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, etc., and is transmitted to the counter shaft 72 via the pulley 71C, the belt 92, and the pulley 72A. Then, the rotation of the counter shaft 72 is transmitted to the handling cylinder 55 and the straw discharging 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 and disconnection between the gear box 73 and the handling barrel shaft 55A is provided on the front side of the gear box 73 provided on the front side of the handling chamber 50. A handling body clutch 74 such as a claw clutch can also 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 may be further provided on the transmission downstream side of the handling cylinder clutch 74 in order to stop the driving of the handling cylinder 55 in an emergency. .. In order to facilitate the maintenance and inspection work of the handling body brake 75, it is preferable to support the handling body brake 75 on the shaft 75B juxtaposed with the handling body shaft 55A on the lower side of the gearbox 73. The shaft 75B is interlocked with a spur gear fixed to the handling cylinder shaft 55A, and the handling cylinder brake 75 brakes the shaft 75B to stop the rotation of the handling cylinder shaft 55A.

As shown in FIG. 9, 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 hydraulic continuously variable transmission 10 for the feed chain. Will be done. Further, the rotation of the counter shaft 71 is carried out via the pulley 71E supported on the left side of the pulley 71D and the belt 94, the first wall insert 53A, the first wall insert 53b, the second wall insert 53C, the second wall insert 53d, and dust exhaust. It is transmitted to the fan 48, the swing sorting device 52, and the straw cutter 59.

The rotation of the input shaft 10A is transmitted to the gearbox 68 via the output shaft 10B, accelerated and decelerated by a plurality of gears 68A built in the gearbox 68, and then to the output shaft 68B pivotally supported by the gearbox 68. Be transmitted.

The gear box 68 is provided with a feed chain speed sensor 10S for measuring the rotation speed of the gear 68A provided on 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 to the feed chain 12B via the drive sprocket 17A pivotally supported at 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 rotation shaft 35B erected on the suspension base 35 on the left side, the feed chain 12B is inside the machine body from the center of the feed chain 12B. The center of the feed chain rotation shaft 35B is provided, the feed chain rotation shaft 35B is extended vertically in the vertical direction, and as shown in FIG. 6, the left end of the output shaft 68B is on the left side of the left end of the counter shaft 71. It is extended and the drive sprocket 17A is also supported on the left side of the pulley 71E.

On the left side of the driver's seat 6, a main transmission lever 16 for remotely controlling the traveling hydraulic continuously variable transmission 66 is provided, and on the rear side of the main transmission lever 16, a transmission 65 is provided according to the collapsed state of the planted grain rod. An auxiliary transmission lever 15 for switching and operating a stepped auxiliary transmission provided in the transmission mechanism is provided. The main shift lever 16 is provided with a speed-up switch 16A and a deceleration switch 16B for remotely controlling the feed chain hydraulic continuously variable transmission 10. By pressing and holding the speed-up switch 16A for about 2 seconds or longer, the rotation of the output shaft 10B of the hydraulic continuously variable transmission 10 for the feed chain can be changed to the maximum rotation speed, and the speed-up switch 16A is pressed for about 1 second. Then, the rotation of the output shaft 10B can be gradually increased in speed. Similarly, by pressing and holding the deceleration switch 16B for about 2 seconds or longer, the rotation of the output shaft 10B of the hydraulic continuously variable transmission 10 for the feed chain can be changed to the minimum rotation speed, and the deceleration switch 16B is shortened by about 1 second. When pressed, the rotation of the output shaft 10B can be gradually reduced. The speed increase switch 16A and the speed reduction switch 16B are collectively referred to as a speed change switch S. Further, a main shift lever position sensor 16S for measuring the shift position of the main shift lever 16 is provided in the lower part of the main shift lever 16, and a sub for measuring the shift position of the auxiliary shift lever 15 is provided in the lower part of the auxiliary shift 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 carried out by the pulley 70B supported by the crankshaft 70, the belt 96, and the traveling hydraulic continuously variable transmission 66. It is input to the traveling hydraulic continuously variable transmission 66 via a pulley 66B supported by an 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 or decelerated by a plurality of gears built in the transmission 65. After that, the transmission is transmitted to the traveling device 2 via the left and right axles 65A pivotally supported by the transmission 65 and the drive wheels 65B fixed to the tip of the axle 65A. Further, the rotation of the output shaft of the traveling hydraulic continuously variable transmission 66 is performed from the output shaft 65C that outputs from a portion on the upper side of the auxiliary transmission in the transmission path in the transmission 65, and the tip of the output shaft 65C. It is transmitted to the pulley 36B supported at the right end of the lateral transmission shaft 36A via the output pulley 65D and the transmission belt 65E attached to the above. A cutting clutch 65F is configured as a configuration for urging a tension roller on the transmission belt 65E.

That is, the rotation of the engine 62 transmitted to the input shaft of the traveling hydraulic continuously variable transmission 66 is accelerated / decelerated by the traveling hydraulic continuously variable transmission 66 and then branched, and one of them is pivotally supported by the transmission 65. Since it is transmitted to the crawler of the traveling device 2 via the left and right axles 65A and the other is transmitted to the raising device 32, the transport device 34, etc. of the cutting device 4 via the lateral transmission shaft 36A, the traveling speed of the traveling device 2 V, the raising speed of the raising device 32 of the cutting device 4, and the carrying speed VH of the conveying device 34 are determined with a certain relationship. For example, when the traveling speed V of the traveling device 2 is increased, the raising speed of the raising device 32 of the cutting device 4 and the conveying speed VH of the conveying device 34 are also increased, and the traveling speed V of the traveling device 2 is reduced. In this case, the raising speed of the raising device 32 of the cutting device 4 and the carrying speed VH of the conveying device 34 are also low. The axle 65A and the lateral transmission shaft 36A are provided with a traveling speed sensor 66S and a transport speed sensor 34S for measuring the rotation speed, respectively.

Further, in the transmission path in the transmission 65, the left and right side clutch gears 65H are pivotally supported on the left and right side portions of the center gear 65G provided on the lower side of the auxiliary transmission device so as to be engaged and disengaged. .. A 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 are engaged with the 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 gears 65H in the left-right direction by a shifter (not shown) operated by the left-right tilt operation of the steering lever arranged in front of the driver's seat 6 from the center gear 65G. By detaching it, the transmission is cut off.

Further, the left and right side clutches 65I are interlocked with the stepping operation of the scraping pedal 22 arranged on the step below the front of the driver's seat 6, and when the scraping pedal 22 is stepped on, the left and right side clutches The center gear 65G and the side clutch gear 65H are disengaged via the 65I, and the rotation of the engine 62 is not transmitted to the axle 65A. On the other hand, when the depression of the scraping pedal 22 is released, the center gear 65G and the side clutch gear 65H are engaged with each other 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 cut to the ridge, the main shift lever 16 is operated to the neutral position to stop, the scraping pedal 22 is depressed, and the center gear 65G and the side clutch gear 65H are operated via the side clutch 65I. The engagement is released and the rotation of the axle 65A is stopped.

When the main shift 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. Will be done. At this time, since the left and right side clutches 65I are shut off, the traveling device 2 is not driven forward and maintains the stopped state. With this configuration, the planted culm that remains in the cutting device 4 can be cut by operating the scraping pedal 22 and the main speed change lever 16 while the vehicle has been cut to the ridge and stopped.

It is also possible to interlock the cutting clutch 65F with the stepping operation of the scraping pedal 22.

That is, when the scraping pedal 22 is stepped on, the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the cutting device 4 are connected via the cutting clutch 65F to drive the cutting device 4. On the other hand, when the depression of the scraping pedal 22 is released, the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the cutting device 4 are disconnected via the cutting clutch 65F, and the driving of the cutting device 4 is stopped. To do.

When one side of the field is cut to the ridge, the main speed change lever 16 is operated to the neutral position to stop the vehicle body. When the scraping pedal 22 is depressed with the combine stopped, the cutting device 4 is driven. At this time, since the main speed change 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 transmitted to the discharge spiral 39A of the Glen tank 5, the rotation of the engine 62 is performed by the pulley 70C supported by the crankshaft 70, the belt 97, the gear box 39, etc., and the lower part of the Glen tank 5. It is transmitted to the discharge spiral 39A provided in. Further, the rotation of the discharge spiral 39A is transmitted to the auger spiral 39B installed in the discharge cylinder 7 provided behind the Glen tank 5. The third path C is provided with a discharge clutch 97A that connects and cuts off the transmission to the downstream side of the transmission from the belt 97.

<Control device>
As shown in FIG. 10, a traveling speed sensor 66S for detecting the speed V of the traveling device 2 and a speed VH of the transport device 34 of the cutting device 4 are mounted on the input side of the control device 85 provided in the driver's seat 6. The transport speed sensor 34S to detect, the feed chain speed sensor 10S to detect the speed VF of the feed chain 12B of the grain removal unit transport device 12, the auxiliary shift lever position sensor 15S to detect the lever position of the auxiliary shift lever 15. Acceleration / deceleration switches 16A and 16B for accelerating / decelerating the speed VF of the feed chain 12B provided on the main speed change lever 16 and a speed control 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 claim) 6B for switching to the hand handling mode, a reverse rotation switch 6C for rotating the feed chain 12B from the rear side to the front side, and the feed chain 12B. A grain stick sensor 34C for detecting the presence or absence of a grain stick to be transported, a stop switch 6D for urgently stopping the drive of the feed chain 12B provided on the side surface of the upper cover 50D, and a start switch 6E for starting the engine 62. , The cutting clutch 65F that transmits the rotation of the engine 62 to the cutting device 4, the grain removal clutch 90A that transmits the rotation of the engine 62 to the grain removal device 3, the discharge clutch 97A that transmits the rotation of the engine 62 to the grain tank 5, and the upper part. A half-open detection sensor 120 that detects the half-open state of the cover 50D is connected via a predetermined input interface circuit.

On the other hand, on the output side, the first transmission motor 10C for driving the tranny shaft 10F of the hydraulic stepless speed changer 10 for the feed chain in the normal cutting mode and the hydraulic stepless speed changer for the feed chain in the hand-held mode. A second transmission motor 10E for driving the 10th tranny shaft 10F, and a first motor 54 for driving a first hook 50G for maintaining the upper cover 50D of the handling chamber 50 in the locked state on the output side of the control device 85. A second motor 74A for driving the handling cylinder clutch 74 that interrupts the transmission of the engine 62 and the handling cylinder 55, and a third motor 75A for interrupting the handling cylinder brake 75 for urgently stopping the handling cylinder 55 are predetermined output interface circuits. It is connected via.

The mode switch 6B is not limited to a switch manually operated by an operator. That is, in order to prevent the posture of the grain rod inherited from the end of the transfer device 34 of the cutting device 4 to the start end of the feed chain 12B, the end of the transfer device 34 has a hand that swings in the vertical direction. An auxiliary rod 38A is provided on the lower side of the handling lever 38 and the handling lever 38. When switching to the hand-handling mode, the hand-handling lever 38 is swung upward around the shaft 38B in order to place the hand-handling grain rod on the auxiliary rod 38A and the feed chain 12B. Switch from state to unregulated state. A switch (mode switch) 38C for turning ON / OFF is provided in conjunction with the operation of swinging the hand-held lever 38, and the switch 38C can be used as the mode switch 6B.

<How to drive / stop the feed chain>
Next, a method of driving / stopping the feed chain 12B of the present embodiment will be described.

(First drive method of feed chain)
FIG. 11 illustrates a first method of driving the speed VF of the feed chain 12B. The horizontal axis represents the traveling speed V of the traveling device 2 detected by the traveling speed sensor 66S, and V1 and 2 are the first and second set values of the traveling speed V. The vertical axis on the left side shows the speed VF of the feed chain 12B detected by the feed chain speed sensor 10S, VF1 and 2 are the first and second set values of the speed VF of the feed chain 12B, and the vertical axis on the right side is the transport speed. The speed VH of the transport device 34 detected by the sensor 34S is shown, VH1 and 2 are the first and second set values of the transport speed VH, and VH1 and 2 show the travel speed V of the travel device 2 as the first and second set values. Corresponds to the speed at V1 and 2.

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

First, the control device 85 determines whether or not there is an input of the mode switch 6B, and if it is determined that there is no input of the mode switch 6B, the control device 85 determines the speed VH of the transfer device 34 (convey speed sensor 34S). It is determined whether or not the input value from) is slower than the first set value VH1.

When the speed VH of the transfer device 34 is determined to be 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. The transport speed VH of the transport device 34 with respect to the travel speed V of the travel device 2 changes depending on the shift stage set by the auxiliary shift lever 15.

Equation 1 VF = K × V
However, K = VH1 / V1
On the other hand, when it is determined that the speed VH of the transport 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.

Equation 2 VF = VF1 + 1.5 to 2.5 x K x (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 Equation 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. Keep in.

(Second drive method of feed chain)
FIG. 12 illustrates a second method of driving 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, and the same members as those in the first driving method are designated by the same reference numerals and duplicate descriptions are omitted.

First, the control device 85 determines whether or not there is an input of the mode switch 6B, and if it is determined that there is no input of the mode switch 6B, the speed VF of the feed chains 12B in the first to third states described above is maintained. 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 accelerated or decelerated in the range of 10 to 20% by the speed governor dial 6A.

Equation 3 VF = 0.25-0.5 x VH1
<Half-opening method of top cover>
Next, a method of opening the upper cover 50D in a half-open state will be described with reference to FIG. 28.

In the hand-handling work of the combine, the threshing section transporting device 12 may be clogged with culms. In order to clear the clogging of the culm, it is necessary to interrupt the hand-handling work, stop the engine 62, and pull out the clogged culm from the threshing section transport device 12. When the upper cover 50D is fully opened in the removal work, the grain culms that are not to be pulled out and are sandwiched by the threshing section transport device 12 may fall from the threshing section transport device 12 or enter the inside of the handling chamber 50. Since there is a risk, it is preferable to open the upper cover 50D halfway and pull out only the clogged culm. Therefore, in the present embodiment, the upper cover 50D can be held in a half-opened state, facilitating the removal work of pulling out the clogged culm from the threshing section transport device 12.

In the following description, the locked state of the first hook 50G means a state in which the first hook 50G is engaged with the pin 50K, and the unlocked state of the first hook 50G is the upper cover 50D.
A state in which the pin 50K is not engaged even if the shaft rotates. The locked state of the second hook 50H means that the second hook 50H can engage with the pin 50N, and the released state of the second hook 50H means that the upper cover 50D engages with the pin 50N even if it rotates. The state of not doing.

In step S1, the control device 85 determines whether or not the stop switch 6D has been input, and if it determines that the stop switch 6D has not been input, the control device 85 continues to drive the engine 62 and keeps the upper cover 50D in the closed state. To do.

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

In step S2, the control device 85 includes a cutting clutch 65F provided between the engine 62 and the cutting device 4, and a threshing clutch 90A provided between the engine 62 and the threshing device 3.
Then, it is determined whether or not there is an input of the discharge clutch 97A provided between the engine 62 and the Glen tank 5, and there is no input of all the clutches of the cutting clutch 65F, the grain removal clutch 90A, and the discharge clutch 97A, that is, cutting. When it is determined that the clutch 65F, the grain removal clutch 90A, and all the clutches of the discharge clutch 97A are disconnected, the engine 62 is continuously driven and the upper cover 50D is maintained in the closed state.

On the other hand, which of the cutting clutch 65F, the threshing clutch 90A, and the discharge clutch 97A has one clutch input, that is, which of the cutting clutch 65F, the threshing clutch 90A, and the discharge clutch 97A has one clutch connected. If it is determined that the clutch 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 is an input of the mode switch 6B for switching between the normal cutting work and the hand-handling work, and if it is determined that there is no input of the mode switch 6B, that is, it is determined that the normal cutting work is performed, the upper cover Keep the 50D closed.

On the other hand, when there is an input of the mode switch 6B, that is, when it is determined that the work is being handled by hand, the process proceeds to step S5, and the first transmission motor 10C is driven to position the trunnion shaft 10F of the pressureless transmission 10F in the neutral position. The drive of the feed chain 12B is stopped, and the first motor 54 is driven to release the locked state of the first hook 50G and the pin 50K to open the upper cover 50D halfway. In addition, the auxiliary worker who is performing the hand-handling work notifies the operator who boarded the cockpit 6 that the upper cover 50D is half-opened and the culm entwined with the threshing section transport device 12 is being worked. Therefore, it is preferable to sound the buzzer when the upper cover 50D is half-opened.

Note that FIG. 20 shows a form in which the first motor 54 rotates clockwise and the connecting arm 86 connecting the first motor 54 and the first hook 50G moves from above to below the first motor 54. Shown.

<How to close the top cover after half-opening>
Next, a method of closing the upper cover 50D after the upper cover 50D is half-opened will be described with reference to FIGS. 20 and 21.

When the lock state of the first hook 50G and the pin 50K is released by driving the first motor 54, 54C erected on the arm 54B of the first motor 54 connects the first motor 54 and the first hook 50G. Since it is engaged with the end of the elongated hole 87A opened in the first connecting arm 87, the first hook 50G is moved by the pulling operation of pulling down the upper cover 50D to lock the pin 50K. Cannot be returned to. In this state, as shown in FIG. 20, the marker portion 50R is located above the opening / closing lever 50E.

Therefore, in order to move the first hook 50G and return it to the pin 50K and the locked state by the pulling operation of pulling down the upper cover 50D, the stop switch 6D is operated again, and as shown in FIG. The 1-motor 54 is rotated counterclockwise, and the connecting arm 86 connecting the 1st motor 54 and the 1st hook 50G is moved from the lower side to the upper side of the 1st motor 54 to move the pin 54C and the first of the 1st motor 54. 1 After disengaging the end of the elongated hole 87A of the connecting arm 87, the upper cover 50D is closed by locking the first hook 50G and the pin 50K by pulling down the upper cover 50D. Can be.

In this state, as shown in FIG. 21, the marker portion 50R is located close to the upper side of the open / close lever 50E, and in order to improve the operability of the stop switch 6D, the stop switch 6D is subjected to an alternate operation. It is preferable to employ a switch that performs the above.

Further, in the above-described embodiment, the stop switch 6D is operated again to rotate the first motor 54 counterclockwise, and the connecting arm 86 is moved from the lower side to the upper side of the first motor 54 to move the first motor 54. The engagement between the pin 54C and the end of the elongated hole 87A of the first connecting arm 87 has been disengaged, but the first motor 54 is automatically turned off when a predetermined time elapses after operating the stop switch 6D. Rotate clockwise to move the connecting arm 86 from below to above 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. You can also let it.

<How to restart the engine>
Next, a method of restarting the engine 62 will be described with reference to FIG. 29.

In step S6, the control device 85 determines whether or not there is an input of the start switch 6E, and if it determines that there is no input of the start switch 6E, 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 or not there is an input of the threshing clutch 90A provided between the engine 62 and the threshing device 3, and there is an input of the threshing clutch 90A, that is, the threshing clutch 90A is connected. If it is determined to be in the state, the engine 62 is not started.

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

In step S8, the control device 85 determines whether or not there is an input of the half-open detection sensor 120 provided in the threshing device 3, and if there is an input of the half-open detection sensor 120, that is, the upper cover 50D is in the 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 to start the engine 62. It is preferable that the engine 62 is started and stopped by opening and closing a supply valve (not shown) that supplies fuel to the engine 62.

1 Aircraft frame 2 Traveling device 3 Threshing device 4 Threshing device 6D Operating tool 12 Threshing part transport device 12A Holding rod 12B Feed chain 50 Handling room 50D Upper cover 62 Engine 85 Control device 90A Threshing clutch 120 First detection means

Claims (3)

A threshing section transporting device (12) provided with an engine (62), a harvesting device (4) for cutting grain culms, and a threshing device (3) for threshing grain culms, and supplying the harvested culms to the threshing device (3). ) In the combine
The threshing section transport device (12) includes a feed chain (12B) and a holding rod (12A) located above the feed chain (12B).
An operating tool (6D) arranged around the threshing section transport device (12) and
Based on the operation of the operating tool (6D), the engine (62) is stopped and the holding rod (12A) is moved upward to remove foreign matter between the holding rod (12A) and the feed chain (12B). The control device (85) that enables it and
Combine, characterized by comprising the control device (85) by the engine (62) of the clamping Ji杆without let the stop (12A) can be move upward opening and closing lever (50E). A lock mechanism for locking the clamping Ji杆(12A) on the feed chain (12B), if the previous Kimisao Sakugu (6D) is operated, the claims has a configuration in which the lock of the lock mechanism is released The combine according to 1. A first detecting means (50D) that covers the upper part of the handling chamber (50) of the threshing device (3) and has the holding rod (12A), and a half-open state of the upper cover (50D). 120) is provided, and the engine (62) can be started when the threshing clutch (90A) is disengaged and the half-open state of the upper cover (50D) is not detected by the first detection means (120). The combine according to claim 2.

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