JP6687871B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  Conventionally, it is equipped with a sensor that detects whether foreign matter is caught or the grain culm is clogged between the combine feed chain and the clamping rod, and the upper cover of the threshing device is opened halfway based on the detection result of this sensor. A configuration (Patent Document 1) has been proposed.

JP, 2009-195169, A

  However, the configuration of Patent Document 1 has a problem that the safety of an operator who is performing a manual operation is not sufficiently secured when the engine is unexpectedly restarted. Further, there is a problem that the upper cover may be opened during the mowing and harvesting work due to erroneous detection by the sensor.

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

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

  According to the invention described in claim 1, a mowing device (4) is provided in front of a body frame (1) carrying an engine (62), and a threshing device (3) is provided behind this mowing device (4). The threshing device (3) is provided with a threshing part transporting device (12) that carries the harvested culm by carrying it from the carrying device (34) on the cutting device (4) side, and the threshing part transporting device (12) includes: A combine combiner comprising a feed chain (12B) and a holding rod (12A) located above the feed chain (12B) and biased toward the feed chain (12B) by a biasing means (14) such as a spring, The base of the hand-handling restricting member (38) is pivotally supported by the left-right shaft (36B) at the end of the transfer device (34), and the hand-handling restricting member (38) is swung downward. Then, when viewed from the side, this hand control member is The rear end of the gripping rod (38) is located rearward of the front end of the holding rod (12A), and the hand control member (38) is arranged above the feed chain (12B) with a space therebetween so that the harvested culm It becomes a regulated state in which it is regulated to place the stalk on the feed chain (12B), and when this hand handling regulating member (38) is swung upward, the harvested culm can be placed on the feed chain (12B). The combine is characterized in that it is configured to switch to a non-regulated state.

  When the operating tool (6D) arrange | positioned at the peripheral part of the said threshing part conveyance apparatus (12) is operated, the invention of Claim 2 stops the said engine (62), and the said feed chain (12B). The combiner according to claim 1, further comprising a control device (85) for releasing the urging of the holding rod (12A) toward the () side.

  A threshing clutch (90A) for transmitting the rotation of the engine (62) to the threshing device (3) side is provided with a threshing clutch (90A) in which the holding rod (12A) is biased toward the feed chain (12B) side. The combine according to claim 2, wherein the engine (62) can be started when it is cut off.

  According to the invention described in claim 1, it is possible to regulate that the grain culm is placed on the feed chain (12B) during the normal mowing and threshing work, while the grain culm is fed during the manual handling work (12B). Can be placed on top.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, when the operation tool (6D) arranged in the peripheral portion of the threshing part transport device (12) is operated, the engine Since (62) stops and the biasing of the holding rod (12A) toward the feed chain (12B) side is released, it is possible to easily remove foreign matter between the holding rod (12A) and the feed chain (12B). It is possible to improve work efficiency.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 2, the holding rod (12A) is biased toward the feed chain (12B), and the rotation of the engine (62) is reduced by the threshing device ( The engine (62) can be started when the threshing clutch (90A) transmitted to the 3) side is disconnected.

It is a left side view of a combine. It is a top view of a combine. It is a principal part left side view of a threshing apparatus. It is a 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 an installation explanatory view of a hydraulic type continuously variable transmission for a feed chain. (A) of a hydraulic type continuously variable transmission for a feed chain is an enlarged sectional view, (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 side view of a conveyance apparatus. It is an explanatory view of installation of another hydraulic type continuously variable transmission for a feed chain. It is a partial cross-section top view of a threshing apparatus. It is a principal part sectional drawing of a threshing apparatus. It is an enlarged view of the E section of FIG. It is explanatory drawing of the upper cover of a closed state. It is an enlarged view of the F section of FIG. It is explanatory drawing of the drive method which drives a 1st motor, releases a 1st hook, and makes an upper cover half open state. It is explanatory drawing of the drive method which operates an opening-closing lever and releases a 1st, 2nd hook and makes an upper cover fully 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 opening detection sensor and a contact body in the state which driven the 1st motor and released the 1st hook. It is explanatory drawing of the positional relationship of the half-opening detection sensor and a contact body in the state which driven the 1st motor, released 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-closing lever and released the 1st and 2nd hooks, and made the upper cover fully open. It is a partial cross-section top view of a threshing device, 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 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 front side is viewed from the front of the operator, the rear side is behind, 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 composed of a pair of left and right crawlers for traveling on a soil surface below the machine body frame 1, and on the upper left side of the machine body frame 1 for threshing and sorting. The threshing device 3 for performing the above is provided, and in front of the threshing device 3, the mowing device 4 for harvesting the grain rod in the field is provided. Grains that have been threshed / selected by the threshing device 3 are stored in the Glen 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 cockpit 6 on which an operator rides is provided on the upper right side of the machine body frame 1, and an engine room 8 in which an engine 62 is mounted is provided below the cockpit 6.

<Mowing device>
The reaping device 4 is attached to a reaping frame 30, which is a main frame formed by a post-reaping frame 28 and a reaper transmission case 29 laterally provided at the tip of the post-reaping frame 28. The base of the post-mowing frame 28 is attached to the right side of a horizontal transmission cylinder 36 that is rotatably supported on the upper part of a pair of left and right suspensions 35, 35 provided upright on the machine body frame 1. .

  The reaping device 4 is provided with a weeding rod 31 for weeding planted culms provided in the lower part of the front side, a pulling device 32 provided behind the weeding rods 31 for causing felled planted culms, and a pulling device. A cutting blade device 33 provided at the lower rear part of 32 for cutting the root of the planted culm, and a raising device 32 and a cut culm provided behind the cutting blade device 33 are provided on one side of the threshing device 3. It is provided with a transport device 34 that transports toward the threshing part transport device 12 provided. The transport device 34 includes a stock-source transport device 34A that transports the stock side of the harvested culm and a tip transport device 34B that transports the tip side, and from the transport device 34 to the threshing part transport device 12. In order to prevent the falling of the grain rod when taking over, a support body 37 is provided on the inner side of the front end of the threshing part transport device 12 from the rear end of the transport device 34 to the front end of the handling chamber 50. Has been.

  A grain rod sensor that detects the amount of the grain rods conveyed to the front and rear portions of the conveying device 34 of the mowing device 4 where the harvested grain rods join, the front side of the feed chain 12B, and the like in order to increase the collection rate of the grain grains. It is preferable to provide 34C and switch the conveying speed of the feed chain 12B according to the output value of the grain rod sensor 34C.

  As shown in FIG. 13, at the end portion of the transport device 34, the end portion of the transport device 34 is provided in order to prevent the attitude of the grain rod that is inherited from the end portion of the transport device 34 to the start end portion of the feed chain 12B. Is provided with a handle lever (lever) 38 that swings up and down around a shaft 38B extending in the left-right direction, and below the handle lever 38, a bolt or the like is provided at the end of the transport device 34. The auxiliary slidable rod 38A including a spring plate and the like attached by the fastening member is provided.

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

  During normal mowing and threshing work, the hand lever 38 is swung downward around the shaft 38B in order to prevent the grain rod from being placed on the auxiliary pulling rod 38A and the feed chain 12B (regulation). Status). On the other hand, at the time of manual handling work, in order to place the grain rod on the auxiliary pulling rod 38A and the feed chain 12B, the front portion of the pulling rod 12A is lifted up, and then the handle lever 38 is moved around the shaft 38B. And swings upward (non-regulated state).

  In addition, in order to improve the operability of the handle lever 38, the handle lever 38 is arranged so as to be offset from the slider 12A in the left-right direction, or the length of the handle lever 38 in the front-rear direction is shortened. Then, the rear end portion of the handle lever 38 may be prevented from extending below the slidable rod 12A.

  Further, in order to maintain a good posture of the grain rod that is transferred from the transport device 34 to the threshing part transport device 12, the auxiliary transport is performed on the right side of the upper surface or the lower surface of the support body 37 facing the tip transport device 34B. The device can also be arranged.

  The auxiliary transfer device is provided with a lug belt and a protruding belt that move from the front side to the rear side in order to transfer the tips of the grain rods taken over from the tip transfer device 34B to the feed chain 12B. Further, by transmitting the rotation of a counter shaft 71, which will be described later, to the auxiliary transporting device via the output shaft B of the hydraulic continuously variable transmission 10 for the feed chain, the moving speed of the lugged belt or the like is fed to the feed chain 12B. It is preferable that the moving speed be the same as the moving speed. 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 left suspension base 35 is attached to the upper side of a base 35A that is erected on the machine body frame 1. A feed chain turning shaft 35B extending in the up-down direction is rotatably supported on the left front part of the suspension table 35 to rotatably support the base portion of the horizontal transmission frame 35C that pivotally supports the left side of the horizontal transmission cylinder 36. There is. Further, in order to easily perform maintenance / inspection work of devices such as the weeding rod 31 and the raising device 32 of the cutting device 4 by rotating the horizontal transmission cylinder 36 around the feed chain rotating shaft 35B, a horizontal transmission frame is provided. 35C is formed in a circular arc shape having a downward convex portion from the base portion to the tip portion in a front view. As will be described later, the threshing section transporting device 12 that transports the grain rod also rotates about the feed chain rotating shaft 35B.

  The suspension base 35 on the right side is attached to the upper side of a base 35A that is erected on the machine body frame 1. A support member 35D that pivotally supports the right side portion of the horizontal transmission cylinder 36 is attached to the upper end of the suspension table 35. The support member 35D is composed of a front support member and a rear support member that are divided into a substantially semi-circular shape. When the right side portion of the lateral transmission cylinder 36 is pivotally supported, the lateral transmission cylinder 36 is centered around the feed chain rotation shaft 35B in order to engage the front and rear side support members and perform maintenance of the reaping device 4 or the transmission 65. When the reaping device 4 is rotated to move to the left, the lateral transmission cylinder 36 is pulled forward by disengaging the front and rear support members. Further, in order to increase the rigidity of the left and right suspension bases 35, 35 against deformation and the like, 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 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 is supported by a right end portion of a horizontal transmission shaft 36A installed in the horizontal transmission cylinder 36 via a pulley (not shown) supported by the output shaft of the traveling hydraulic continuously variable transmission 66. The horizontal transmission cylinder 36 and the horizontal transmission shaft 36A are rotated by being transmitted to the pulley 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 reaping device 4 via a transmission shaft (not shown) incorporated in the frames 27 and 28. To 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 is provided. The rotation transmitted to 66 is transmitted to the left and right crawlers of the traveling device 2 via the transmission 65.

<Thrush>
As shown in FIG. 4, the threshing device 3 is provided with a handling room 50 for threshing the culms at the front upper part, and a sorting room 51 for sorting the threshed grains under 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 front and rear walls 50A and 50C. Then, a grain culm supply port 26A is opened in the lower left portion of the front wall 50A of the handling chamber 50, a handling port 26B is opened in the lower portion of the left wall 50B along the handling barrel 55, and a lower left portion of the rear wall 50C is opened. A straw outlet 26C is opened at. Further, on the left side of the handling room 50, a threshing section transporting device 12 for sandwiching the root of the grain rod and transporting it backward is arranged along the handling port 26B, and threshing transported by the threshing section transporting device 12 is performed. The completed straw rod is taken over by the straw conveying device 58 provided behind the threshing portion conveying device 12 and further conveyed to the rear, and then cut by a pair of straw cutters 59 and discharged to the outside. .

  An oscillating sorting device 52 is provided in the upper part of the sorting chamber 51, and a lower part of the sorting chamber 51 is provided with a first Karako 53A for blowing air to a sheave in front of the oscillating sorting device 52, and the oscillating sorting device The first trough 53B that collects the leaking grains, the second Karako 53C that blows air to the rear sieve of the rocking sorter, and the grain with branch stems that leak from the rocking sorter That is, the second gutter 53D for collecting the second item is sequentially installed from the front side. The grain collected in the first gutter 53B is transferred to the Glen tank 5 by the first transfer spiral 53b installed in the first gutter 53B, and the grain collected in the second gutter 53D is It is transferred to the No. 2 processing chamber by the No. 2 transfer spiral 53d installed in the No. trough 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 screw blades on the outer peripheral surface is axially supported in the front-rear direction to perform dust treatment. On the front side of the chamber, there is provided a second treatment chamber for treating and reducing the second substance. Inside the second processing chamber, a second processing cylinder 56 having intermittent spiral blades on its outer peripheral surface is pivotally supported. Further, a dust exhaust fan 48 is arranged on the upper rear side of the rocking / sorting shelves to suck straw dust and the like generated during threshing / sorting and discharge the dust to the outside of the machine.

<Threshing unit transport device>
As shown in FIGS. 3 and 6, the threshing section transporting 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 biased toward the feed chain 12B by a biasing 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 tension wheels 17B and 17B rotatably supported at the front and rear ends of the upper chain rail 18A and a drive sprocket 17A provided between the tension wheels 17B and 17B. It is an endless chain. The feed chain 12B on the working side, which is placed on the upper chain rail 18A, clamps the clamping rod 12A and the root of the grain stem in the process of moving from the front side to the rear side. In order to prevent the conveyed grain rod from being wound around the end portion of the feed chain 12B, the rear tensioning wheel 17B uses an idle sprocket having winding prevention plates 17D on both sides. Is preferred.

  On the side surface of the upper cover 50D, in order to improve the workability by the auxiliary worker who is performing the manual work, it is possible to easily adjust the speed VF1 of the feed chain 12B during the manual work and to improve the workability. 6A is provided. Further, in order to efficiently perform the speed adjustment of the speed VF of the feed chain 12B according to the amount of the hand-operated grain rod, the speed control dial 6A is arranged around the auxiliary sled rod 38A on which the hand-operated grain rod is mounted. In addition, the speed control dial 6A may be arranged on the side panel of the cockpit 6 in order for the operator sitting on the cockpit 6 to efficiently assist an unfamiliar assistant operator.

  A speed control pedal 45 for adjusting the speed VF of the feed chain 12B during manual handling is provided on the machine body frame 1 in front of the threshing device 3 together with or in place of the speed control dial 6A. You can also

  In a side view, the sandwiching rod 12A is provided in a slanting upward direction along the handle 26B from the grain culm supply port 26A of the handle room 50 to the straw outlet 26C. The upper chain rail 18A on which the feed chain 12B on the working side is mounted is tilted rearwardly upward from the front end of the front of the horizontal shaft transmission cylinder 36, and then gently rearwardly inclined to the front of the grain culm supply port 26A of the handling chamber 50. After reaching, it tilts backwards along the handle 26B from the grain culm supply port 26A of the handling chamber 50 to the straw outlet 26C so as to face the sandwiching rod 12A. After that, it horizontally extends rearward from the straw outlet 26C and then inclines rearwardly to reach the rearward rear end of the front end portion of the tip conveying device 34A. In order to easily change the length in the front-rear direction of the threshing part conveying device 12 in accordance with the change in the number of cutting lines of the mowing device 4, it is preferable that the upper chain rail 18A has a division structure that can be divided in the front-rear direction. is there.

  The lower chain rail 18B on which the non-acting side feed chain 12B is mounted is inclined rearward from the upper front end of 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 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 quarter circle shape. In addition, it is preferable to provide a cover (not shown) above the guide 18D to prevent the counter shaft 71 and the like from being contaminated due to a drop of oil or the like.

  Below the lower chain rail 18B, a support frame 19 that supports the upper chain rail 18A and the lower chain rail 18B by the rail connecting plate 18C is provided. That is, the feed chain 12B is supported by the support frame 19. In addition, the connecting plate 18E connected to the upper chain rail 18A and the lower chain rail 18B prevents straw debris that falls from the feed chain 12B during grain transfer from falling to the drive unit of the sorting chamber 51. A straw debris guide plate (not shown) for cutting is attached.

  As shown in FIGS. 3 and 5, the front end portion of the support frame 19 is attached to a plate 19A attached to a bracket 19B with bolts or the like, and the bracket 19B is a feed chain rotation shaft provided on a left suspension base 35. It is rotatably attached to the upper and lower ends of 35B. When the feed chain 12B is rotated about the feed chain rotating shaft 35B, the feed chain rotating 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 inside of the machine body. It is erected near the rear side of the front tension 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 support frame 19 is viewed from the front end from the input shaft 10A and the gear box 68 of the feed chain hydraulic continuously variable transmission 10 from the front end. After extending rearwardly between the output shafts 68B, the first transmission motor 10C is curved at about 90 degrees and extends upward. Then, after extending in front of the counter shaft 71 upwardly, the counter shaft 71 is inclined rearward from the lower side of the guide 18D along the lower side of the lower chain rail 18B, and the front and rear direction of the lower chain rail 18B is substantially the same. It reaches the central part.

  Thus, when performing maintenance and inspection of the feed chain 12B, the feed chain hydraulic continuously variable transmission 10, and the like, the support frame 19 is rotated about the feed chain rotation shaft 35B, and the feed chain 12B is rotated. This can be easily performed 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 35B is erected on the front side of the front portion of the feed chain hydraulic continuously variable transmission 10. ing.

  In a side view, the front tension 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 reaping device 4, and the rear tension wheel 17B is, as shown in FIG. It is provided near the rear of the front end of the tip transport device 34A. The drive sprocket 17A is arranged between the front and rear tension wheels 17B, 17B in the front-rear direction and is biased toward the front tension wheel 17B side, and the horizontal shaft transmission cylinder 36 and the feed chain 12B. The counter shaft 71 that transmits the rotation of the engine 62 is located substantially in the center. Further, in the vertical direction, the counter shaft 71 and the lower chain rail 18B and the like are positioned substantially at the center of the support frame 19 that extends rearward. A tension sprocket 17C whose base is supported by a drive shaft 68D described later is provided between the front tension wheel 17B and the drive sprocket 17A.

  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 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 that, 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, and is accelerated / decelerated by the carrier box 68, and then the threshing part conveying 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 which are erected upright toward 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 71A supported on 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 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 hydraulic continuously variable transmission 10 for the feed chain via the supported pulley 71D, belt 93 and the like. 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 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 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. Is disconnected, 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 safely replaced. Instead of the coupling 68C that connects the output shaft 68B and the drive shaft 68D, a meshing clutch or a pawl clutch may be provided at the ends of the output shaft 68B and the drive shaft 68D that face each other.

  As shown in FIG. 7, the carrier box 68 is attached to the right side surface of the rear plate 11B that is erected upright toward the front side of the front wall 50A of the threshing device 3 at a portion that is biased downward. Further, in order to effectively utilize 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 box 68, and further, a feed chain hydraulic continuously variable transmission. On the rear side of 10, a first speed change motor 10C for rotating a trunnion shaft 10F of a hydraulic continuously variable transmission 10 for a feed chain is attached.

  Further, as shown in FIG. 14, a first speed change motor 10C for rotating a trunnion shaft 10F of the hydraulic continuously variable transmission 10 for the feed chain and a first speed change motor 10C are provided behind the hydraulic continuously variable transmission 10 for the feed chain. A second transmission motor 10E, which has a larger output than the transmission motor 10C and rotates the trunnion shaft 10F at a high speed, can be installed in parallel.

  The gear gear 10c of the first gear shift motor 10C and the gear gear 10e of the second gear shift motor 10E attached to the machine body frame 1 are engaged with the tip end portion of the sector gear 10G whose base end portion is supported by the trunnion shaft 10F. There is. A control device 85 described later drives the first variable speed motor 10C to rotate the trunnion shaft 10F in the normal mowing mode, and drives the second variable speed motor 10E to rotate the trunnion shaft 10F in the manual handling mode. The second variable speed motor 10E freely rotates in the mowing mode, and the first variable speed motor 10C freely rotates in the manual handling mode.

  The hydraulic continuously variable transmission 10 for the feed chain and the carrier box 68 can be attached to the machine body frame 1, the first speed change motor 10C and the second speed change motor 10E can be attached to the carrier box 68, and the input shaft 10A is provided. In place of the feed chain hydraulic continuously variable transmission 10 in which the pump section and the motor section having the output shaft 10B are integrally structured, a feed chain hydraulic continuously variable transmission in which the pump section and the motor section are divided structures is provided. It can also be used.

  Further, the first variable speed motor 10C changes the speed of the feed chain hydraulic continuously variable transmission device 10 in association with the drive speed of the reaping device 4. Specifically, it is preferable to detect the rotation speed output from the traveling hydraulic continuously variable transmission 66 and transmitted to the mowing device 4, and operate the first transmission motor 10C according to the 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 frame 35E of the left and right suspensions 35, 35 are connected by a loosely inserted pin in order 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 post-cutting frame 28 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, the hydraulic system path 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 opening and closing of the control valve 9A is provided. On the right side of the control valve 9A, an oil tank 9B that supplies oil to the feed chain hydraulic continuously variable transmission 10, the traveling hydraulic continuously variable transmission 66, and the like. It is provided.

  In order to effectively utilize the space below the front of the threshing device 3 and prevent the interference of 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. The output shaft 10B and the output shaft 68B of the gear box 68 are vertically arranged vertically.

  In order to prevent hydraulic pressure loss, the input shaft 10 of the pump section of the feed chain hydraulic continuously variable transmission 10 is provided below the output shaft 10B, and the feed chain hydraulic continuously variable transmission 10 and control are provided. 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 hydraulic continuously variable transmission 10 for the feed chain to shorten the length of the feed chain 12B. ing.

<Upper 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 front and rear positions, and between the upper cover 50D and the machine frame of the threshing device 3. A biasing means 103 such as a gas spring for moving the upper cover 50D upward (counterclockwise in the front view) is provided in the. During the mowing 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 holding 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, etc. is provided.

  In order to easily remove the foreign matter stuck between the feed chain 12B and the holding rod 12A or the holding rod 12C, as shown in FIGS. The first motor 54 that is driven in association with the operation of the “operation tool” in FIG. 6D is provided. Note that FIG. 18 illustrates both the half-opened state and the fully-opened state of the upper cover 50D for easy understanding.

  The first motor 54 is attached to the front surface of the upper cover 50D via a bracket 54F having a substantially U-shaped cross section, and the bracket 54F bypasses the biasing 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 to quickly bring the upper cover 50D into the half-opened state, the first motor 54 is disposed above the gear box 73 provided on the left side portion of the counter shaft 72 and is viewed in a plan view. It is arranged at a position facing a cutout 73B provided on the rear upper surface of the gear box case 73A that covers the periphery of the gear box 73. The upper side of the first motor 54 is covered with a front cover 50U extending forward from the upper cover 50D.

  To make the side of the holding rod 12A of the upper cover 50D half open, that is, in the half open state, unlock the first hook 50G and the pin 50K extending in the front-rear direction in the handling chamber 50 to release the first hook. This is performed by locking the second hook 50H having a total length longer than 50G and the pin 50N. Further, in order to open the upper cover 50D, that is, in the fully opened state, the locked state of the first hook 50G and the pin 50K is released, and the second hook 50H and the pin 50N extending in the front-rear direction in the handling chamber 50. It is also performed by releasing the locked state of and.

  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-opened state is 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 substances that are stuck on the feed chain 12B, and the fully opened state is the upper cover. The state in which the side portion of the holding rod 12A of 50D is moved upward by approximately 300 to 450 mm 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 50G via a connecting arm 86. Note that FIG. 20 illustrates the upper cover 50D in a half-opened state and a fully-opened state together for easy understanding.

  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. The second connecting arm 88 connects the left side portion of the first connecting arm 87 and the upper side portion of the third connecting arm 89.

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

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

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

  The second connecting arm 88 has a plate portion 88B formed with a long hole 88A having a long diameter in the left-right direction, 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. Are formed from. The right end 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 in a front view, and a support shaft 89A extending in the front-rear direction is provided at an upper end portion of the third connecting arm 89. It is fitted in the long hole 88A of the plate portion 88B. The lower end of the third connecting arm 89 is fixed to the upper end of the first hook 50G.

  Both ends of a biasing means 87C including a spring spring or the like for rotating the first connecting arm 87 in the front view in the clockwise direction about the support shaft 50M are attached to the lower portion of the bracket 54F and the front surface of the second hook 50H. There is.

  As a result, 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, as shown in FIG. 27, the second hook is compressed by the biasing means 87C. After the right side surface of 50H moves upward while slidingly contacting the pin 50N, the tip portion of the second hook 50H is engaged with the pin 50N. Next, when operating the opening / closing lever 50E to move the upper cover 50D from the half-opened state to the fully-opened state, the second hook 50H rotates counterclockwise around the shaft 50F, and then the base of the second hook 50H is rotated. 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 compression force of the biasing means 87C attaches it to the grain rod conveyed by the feed chain 12B provided on the left side of the gear box case 73A. The right side surface of the second hook 50H moves downward while slidingly contacting the pin 50N without interfering with the isolation wall 50T that prevents invasion of straw and the like into the handling chamber 50.

  When the first motor 54 rotates counterclockwise in the front view in conjunction with the operation of the stop switch 6D, the pin 54C of the arm 54B attached to the first motor 54 causes the pin 54C of the first connecting arm 87 to the right of the long hole 87A. It engages with the end portion and rotates the first connecting arm 87 counterclockwise about the spindle 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 to the right. To move.

  When the second connecting arm 88 moves to the right, 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, and the upper end of the third connecting arm 89 about 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 about the shaft 50F. The locked state of the one 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 biasing means 103 to be in a half-opened state.

  As a result, it is possible to easily remove the foreign matter clogged between the feed chain 12B and the sandwiching rod 12A or the sandwiching rod 12C, and prevent a large amount of grains, paddy, etc. in the handling chamber 50 from being dispersed 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, which is longer 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 biasing 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 sandwiching rod 12C.

  An opening / closing lever 50E is provided as shown in FIG. 21 in order to open the upper cover 50D when the first motor 54 cannot be driven due to a 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.

  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 is provided at the base of the opening / closing lever 50E. Further, the cylindrical shaft 50Q is fitted with a biasing means 50P such as a torque spring for maintaining the first hook 50K in a locked state, and one end side of the biasing means 50P engages with the first hook 50K. The other end is engaged with the upper cover 50D.

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

  When the opening / closing 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 first hook 50K, the first hook 50K moves upward with the shaft 50F as the center (in the front view, The one hook 50K is moved counterclockwise) to release the locked state with the pin 50K, and the urging means 103 moves the upper cover 50D upward with the pin 101 as the center to be in a half-opened 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 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 the front view, The 2 hook 50H is moved to the counterclockwise direction) to release the locked state with the pin 50N, and the urging means 103 moves the upper cover 50D further upward with the pin 101 as the center 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 brought into the half-opened state or the fully-opened state by operating the opening / closing lever 50E.

  When the first hook 50G is moved upward by the opening / closing lever 50E about the shaft 50F, the third connecting arm 89 connected to the first hook 50G moves leftward about the shaft 50F. 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 leftward in the elongated hole 88A of the second connecting arm 88, and The cover 50D can be in a half-opened state or a fully-opened state.

  Similarly, when the first hook 50G is moved upward by the opening / closing lever 50E about the shaft 50F, 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 leftward. However, since the long 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 attached to the first motor 54 is fitted into the long hole 87A. Can be moved to the left, and the upper cover 50D can be in a half-opened state or a fully-opened state.

  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 reversely rotate the first motor 54 and return it to the initial position so that the distance between the right end portion of the elongated hole 87A formed in the first connecting arm 87 and the pin 54C is kept large. is there.

  In order to make the rotating 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. The part 50R is attached. The marker portion 50R is a member that extends 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 in the locked state, as shown in FIG. 18, the marker portion 50R and the opening / closing lever 50E are close to each other in the vertical direction and are substantially in contact with each other.

  On the other hand, when the locked state between the first hook 50G and the pin 50K is released and the first hook 50G rotates counterclockwise around the shaft 50F, the marker section 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 locked state between the first hook 50G and the pin 50K is released, and the opening / closing lever 50E is not operated, opening / closing the marker portion 50R The lever 50E is in a vertically separated state.

<Half-open state detection mechanism of top cover>
Next, the half-open detection sensor 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 entangled between the gripping rod 12 and the feed chain 12B, an auxiliary operator who is performing a manual operation operates the stop switch 6D to move the feed chain 12B. It is a sensor that is stopped and the first motor 54 is driven to release the engagement between the first hook 50G and the pin 50K to detect the half-opened state of the upper cover 50D.

  In order to arrange the detection sensor 120 and the contact body 125 compactly by 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-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 cutout portion 73B of the gearbox case 73A to the inside of the gearbox case 73A, and in the fully opened state of the upper cover 50D, the contact body 125 is cut out. It passes through the portion 73B and moves above the gearbox case 73A.

  FIG. 22 shows the positions of the half-open detection sensor 120 and the contact body 125 detected by the half-open 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 located below the half-opening detection sensor 120, and the half-opening 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 engagement between the first hook 50G and the pin 50K is disengaged and the upper cover 50D starts moving counterclockwise by the biasing means 50P. At the start of movement of the upper cover 50D, the contact body 125 is located below the half-opening detection sensor 120, and the half-opening detection sensor 120 is in the OFF state.

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

  In FIG. 25, the engagement between the first hook 50G and the pin 50K is released, and the urging means 50P further moves the upper cover 50D counterclockwise to contact the half-open detection sensor 120 in the fully opened state. The position of the body 125 is shown. 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. The rotation of the engine 62 is, as shown in FIG. 9, a first path A transmitted to the feed chain hydraulic continuously variable transmission 10 and a second path B transmitted to the traveling hydraulic continuously variable transmission 66. Then, it is branched and transmitted to the third path C which is transmitted to the gear box 39 in front of the Glen tank 5.

  In the first path A transmitted to the hydraulic continuously variable transmission 10 for the feed chain, the rotation of the engine 62 is caused by 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 disconnects the power 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 barrel 55 and the straw conveying device 58 via the gear box 73 and the handling barrel shaft 55A.

  In order to facilitate maintenance / inspection work of the gear box 73, a meshing clutch for operating connection / 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 handle 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 handle barrel clutch 74 on the same axis as the handle barrel shaft 55A.

  Further, on the transmission downstream side of the handling cylinder clutch 74, 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 in order to stop the driving of the handling cylinder 55 in an emergency. . In order to facilitate the maintenance / inspection work of the handle cylinder brake 75, it is preferable to support the handle cylinder brake 75 on a shaft 75B provided in parallel with the handle cylinder shaft 55A below the gear box 73. The shaft 75B is interlocked with a spur gear fixed to the handle barrel shaft 55A, and the handle barrel brake 75 brakes the shaft 75B to stop the rotation of the handle barrel shaft 55A.

  As shown in FIG. 9, the rotation of the counter shaft 71 is transmitted to the input shaft 10A via a pulley 71D, a belt 93, and a pulley 10D supported by the input shaft 10A of the feed chain hydraulic continuously variable transmission 10. To be done. Further, the rotation of the counter shaft 71 is performed by the pulley 71E supported on the left side of the pulley 71D and the belt 94, through the first Kara 53A, the first transfer spiral 53b, the second Kara 53C, the second transfer spiral 53d, and the dust discharge. It is transmitted to the fan 48, the swing selection device 52, and the straw cutter 59.

  The rotation of the input shaft 10A is transmitted to the gear box 68 via the output shaft 10B, is accelerated and decelerated by the plurality of gears 68A installed in the gear box 68, and then is transmitted to the output shaft 68B pivotally supported by the gear box 68. Being transmitted.

  The gear box 68 is provided with a feed chain speed sensor 10S that measures the rotational speed of a 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 is transmitted to the feed chain 12B via the drive sprocket 17A pivotally supported at the left end of the drive shaft 68D. In order to easily rotate the feed chain 12B around the feed chain rotating shaft 35B that is erected on the left suspension base 35, as shown in FIG. The center of the feed chain rotation shaft 35B is provided, and the feed chain rotation shaft 35B is vertically extended in the vertical direction. As shown in FIG. 6, the left end of the output shaft 68B is located on the left side of the left end of the counter shaft 71. The drive sprocket 17A is extended and is also supported on the left side of the pulley 71E.

  On the left side of the cockpit 6, a main speed change lever 16 for remotely controlling a traveling hydraulic continuously variable transmission 66 is provided, and a transmission 65 is provided on the rear side of the main speed change lever 16 according to a fall state of a planted grain rod. An auxiliary transmission lever 15 is provided for switching operation of a stepped auxiliary transmission provided in the internal transmission mechanism. The main speed change 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. By pressing the speed increasing switch 16A 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 speed increasing switch 16A is pressed for about 1 second. Then, the rotation of the output shaft 10B can be gradually increased in speed. Similarly, if 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 rotation speed, and the deceleration switch 16B is shortened by about 1 second. When pushed, the rotation of the output shaft 10B can be gradually reduced. The speed increasing switch 16A and the speed reducing switch 16B are collectively referred to as a speed change switch S. A main shift lever position sensor 16S that measures the shift position of the main shift lever 16 is provided below the main shift lever 16, and a sub shift lever 15 that measures the shift position of the sub shift lever 15 is provided below the sub 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 causes the pulley 70B supported by the crankshaft 70, the belt 96, and the traveling hydraulic continuously variable transmission 66 to rotate. Input is made to the traveling hydraulic continuously variable transmission 66 via 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 or decelerated by a plurality of gears incorporated in the transmission 65. After that, the power 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 ends of the axles 65A. The rotation of the output shaft of the traveling hydraulic continuously variable transmission 66 is output from the output shaft 65C, which is output from a portion on the transmission path in the transmission 65, which is on the side of the auxiliary transmission that is higher than the auxiliary transmission, and the tip of the output shaft 65C. It is transmitted to the pulley 36B supported at the right end of the horizontal transmission shaft 36A via the output pulley 65D attached to the transmission pulley 65D and the transmission belt 65E. A reaping clutch 65F is configured to urge the tension roller to 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 and decelerated by the traveling hydraulic continuously variable transmission 66, and then branched, and one of which is pivotally supported by the transmission 65. Since the power is transmitted to the crawlers of the traveling device 2 via the left and right axles 65A, and the other is transmitted to the raising device 32 of the reaping device 4, the conveying device 34, etc. via the lateral transmission shaft 36A, the traveling speed of the traveling device 2 is reduced. V, the raising speed of the raising device 32 of the reaping device 4, and the conveying speed VH of the conveying device 34 are determined in a fixed 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 harvesting 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 decreased. In this case, the raising speed of the raising device 32 of the reaping device 4 and the conveying speed VH of the conveying device 34 are also low. The axle 65A and the lateral transmission shaft 36A are respectively provided with a traveling speed sensor 66S and a conveyance speed sensor 34S that measure the rotation speed.

  Further, in the transmission path in the transmission 65, left and right side clutch gears 65H are rotatably supported at both left and right sides of a center gear 65G provided at a position 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 above left and right side clutches 65I slide the side clutch gear 65H in the left and right direction by a shifter (not shown) that is operated by the left and right tilting operation of the steering lever arranged in front of the cockpit 6, and the left and right side clutches 65I move from the center gear 65G. The transmission is cut off by removing it.

  Further, the left and right side clutches 65I are interlocked with the depression operation of the scraping pedal 22 arranged on the front lower step of the cockpit 6, and when the scraping pedal 22 is depressed, the left and right side clutches are engaged. 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 take-in 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 mowed to the edge, the main transmission lever 16 is operated to a neutral position to stop the vehicle, and the take-in pedal 22 is depressed to press the center clutch 65G and the side clutch gear 65H via the side clutch 65I. The engagement is released to stop the rotation of the axle 65A.

  When the main shift lever 16 is operated again to the forward side with the combine stopped, the output shaft 65C is driven by the output of the traveling hydraulic continuously variable transmission 66, and the harvesting device 4 is driven via the harvesting clutch 65F. To be done. At this time, since the left and right side clutches 65I are disengaged, the traveling device 2 is not driven forward and the stopped state is maintained. With this configuration, it is possible to mow the planted grain culm that is still in the mowing device 4 by operating the scraping pedal 22 and the main shift lever 16 in a state in which the mowing device 4 has been mowed and stopped.

  The reaping 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 to drive the reaping device 4. 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 reaping device 4 is released via the reaping clutch 65F and the driving of the reaping device 4 is stopped. To do.

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

  In the third path C transmitted to the discharge spiral 39A of the Glen tank 5, the rotation of the engine 62 is transmitted to the lower portion of the Glen tank 5 via the pulley 70C supported by the crankshaft 70, the belt 97, the gear box 39 and the like. It is transmitted to the discharge spiral 39A provided in the. The rotation of the discharge spiral 39A is transmitted to the auger spiral 39B installed in the discharge cylinder 7 provided at the rear of the Glen tank 5. The third path C is provided with a discharge clutch 97A that connects and disconnects the power transmission downstream of the belt 97.

<Control device>
As shown in FIG. 10, on the input side of the control device 85 provided in the cockpit 6, a traveling speed sensor 66S that detects the velocity V of the traveling device 2 and a velocity 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 part transport device 12, an auxiliary shift lever position sensor 15S for detecting the lever position of the auxiliary shift lever 15, Acceleration / deceleration switches 16A and 16B for increasing / decreasing the speed VF of the feed chain 12B provided on the main shift 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 6B for switching to a manual mode, and a feed chain 12B from the rear side to the front side. A reversing switch 6C for rotating, a grain rod sensor 34C for detecting the presence or absence of a transported grain rod on the feed chain 12B, and a stop switch 6D for urgently stopping the drive of the feed chain 12B provided on the side surface of the upper cover 50D. A start switch 6E for starting the engine 62, a mowing clutch 65F for transmitting the rotation of the engine 62 to the mowing device 4, a threshing clutch 90A for transmitting the rotation of the engine 62 to the threshing device 3, and a rotation of the engine 62 A discharge clutch 97A that is transmitted to the tank 5 and a half-open detection sensor 120 that detects the 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 speed change motor 10C for driving the trunnion shaft 10F of the hydraulic continuously variable transmission 10 for the feed chain in the normal mowing mode, and a hydraulic continuously variable transmission for the feed chain in the manual operation mode. A second speed change motor 10E for driving the trunnion shaft 10F of the No. 10, 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 on the output side of the control device 85; The second motor 74A for driving the handling cylinder clutch 74 for connecting / disconnecting the transmission of the engine 62 and the handling cylinder 55, and the third motor 75A for connecting / disconnecting the handling cylinder brake 75 for making an emergency stop of the handling cylinder 55 have a predetermined output interface circuit. Connected through.

  The mode switch 6B is not limited to the switch manually operated by the operator. That is, in order to prevent disturbance of the posture of the grain rod that is inherited from the end portion of the transport device 34 of the harvesting device 4 to the start end portion of the feed chain 12B, the end portion of the transport device 34 has a vertically swinging hand. A handle lever (hand handle restricting member) 38 and an auxiliary flap 38A are provided below the handle lever 38. When switching to the hand handling mode, the hand handling lever 38 is swung upward about the shaft 38B in order to place the hand handling grain rod on the auxiliary pulling rod 38A and the feed chain 12B. Switch from state to unregulated state. It is also possible to provide a switch (mode switch) 38C that turns ON / OFF in conjunction with the operation of swinging the hand lever 38, and use the switch 38C as the mode switch 6B.

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

(First drive method of feed chain)
FIG. 11 shows the first driving method of 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 V2 are the first and second set values of the traveling speed V. 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 is the transport speed. The speed VH of the conveyance device 34 detected by the sensor 34S is shown, VH1,2 are the first and second set values of the conveyance speed VH, and VH1,2 are the travel speed V of the traveling device 2 that is the first and second set values Corresponds to V1 and 2 o'clock speed.

  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 the mode switch 6B is input, and when it is determined that the mode switch 6B is not input, the control device 85 determines that the speed VH of the transfer device 34 (the transfer speed sensor 34S). Input value) 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 formula 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 gear position set by the auxiliary shift 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 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.

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, as shown in the second state, the speed VF of the feed chain 12B is set to the speed calculated by Expression 2. 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 drive method of feed chain)
FIG. 12 shows 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 designated by the same reference numerals, and duplicate description will be omitted.

  First, the control device 85 determines whether or not the mode switch 6B is input. If it is determined that the mode switch 6B is not input, the control device 85 maintains the speed VF of the feed chain 12B in the first to third states described above. To do.

  On the other hand, when it is determined that the mode switch 6B is input, the speed VF of the feed chain 12B is controlled to the speed calculated by the following expression 3. The speed VF of the feed chain 12B can be increased or decreased within the range of 10 to 20% by the speed control dial 6A.

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

  In the manual handling work of the combine, the threshing part conveying device 12 may be clogged with grain culms. In order to eliminate the clogging of the grain culm, it is necessary to interrupt the manual handling work, stop the engine 62, and remove the jammed grain culm from the threshing unit transport device 12. In the removal work, if the upper cover 50D is fully opened, the grain culms that are not to be pulled out and are sandwiched by the threshing part transport device 12 may fall from the threshing part transport device 12 or get inside the handling chamber 50. Therefore, it is preferable to pull out only the jammed grain culms with the upper cover 50D in the half-opened state. Therefore, in the present embodiment, the upper cover 50D can be held in the half-opened state to facilitate the removal work of pulling out the jammed grain culms from the threshing unit transport device 12.

  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 refers to a state where the pin 50K is not engaged. The locked state of the second hook 50H refers to a state in which the second hook 50H can engage with the pin 50N, and the released state of the second hook 50H engages with the pin 50N even if the upper cover 50D rotates. Not to say

  In step S1, the control device 85 determines whether or not the stop switch 6D is input. If it is determined that the stop switch 6D is not input, 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, when it is determined that the stop switch 6D is input, the process proceeds to step S2.

  In step S2, the control device 85 controls the harvesting clutch 65F provided between the engine 62 and the harvesting device 4, the threshing clutch 90A provided between the engine 62 and the threshing device 3, the engine 62 and the Glen tank 5. It is determined whether or not the discharge clutch 97A provided between the cutting clutch 65F, the threshing clutch 90A, and all the clutches of the discharging clutch 97A is not input, that is, the cutting clutch 65F and the threshing clutch 90A. When it is determined that all the clutches of the discharge clutch 97A are disengaged, the engine 62 continues to be driven and the upper cover 50D is maintained in the closed state.

  On the other hand, one of the cutting clutch 65F, the threshing clutch 90A, and the discharge clutch 97A has one clutch input, that is, one of the cutting clutch 65F, the threshing clutch 90A, and the discharge clutch 97A has one clutch connected. If it is determined that the engine 62 is present, the process proceeds to step S3, and the driving of the engine 62 is stopped.

  In step S4, it is determined whether or not there is an input from the mode switch 6B for switching between the normal mowing work and the manual handling work. If there is no input from the mode switch 6B, that is, if it is the normal mowing work, the upper cover Keep 50D closed.

  On the other hand, when the mode switch 6B is input, that is, when it is determined that the manual operation state is reached, the process proceeds to step S5, the first speed change motor 10C is driven, and the trunnion shaft 10F of the pressureless continuously variable transmission 10 is moved to the neutral position. To stop the drive of the feed chain 12B, and drive the first motor 54 to release the locked state of the first hook 50G and the pin 50K to bring the upper cover 50D into a half-opened state. In addition, the operator who is on the cockpit 6 is informed that the auxiliary operator who is performing the manual operation is working the grain culm that is entwined with the threshing part transport device 12 with the upper cover 50D in the half-opened state. Therefore, it is preferable to ring the buzzer when the upper cover 50D is in the half-opened state.

  In FIG. 20, the first motor 54 rotates clockwise, and the connecting arm 86 that connects the first motor 54 and the first hook 50G moves from above the first motor 54 to below. Shows.

<Closing method after the upper cover is half opened>
Next, a method for closing the upper cover 50D after the upper cover 50D is in the half-opened state will be described with reference to FIGS.

  In the state where the locked state of the first hook 50G and the pin 50K is released by the drive of 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 engages with the end of the elongated hole 87A formed in the first connecting arm 87, the first hook 50G is moved by the pull-down operation of pulling down the upper cover 50D and locked with the pin 50K. Cannot be returned to. In this state, as shown in FIG. 20, the marker portion 50R is located above the open / close lever 50E and spaced apart.

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

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

  Further, in the above-described embodiment, the stop switch 6D is operated again to rotate the first motor 54 counterclockwise to move the connecting arm 86 from below the first motor 54 to above the first motor 54. Although the engagement between the pin 54C and the end of the elongated hole 87A of the first connecting arm 87 is released, the first motor 54 is automatically turned off after a predetermined time has elapsed after the stop switch 6D was operated. By rotating clockwise, the connecting arm 86 is moved upward from below the first motor 54 to release the engagement between the pin 54C of the first motor 54 and 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 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, when it is determined that the start switch 6E is 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 that the condition is met, the engine 62 is not started.

  On the other hand, when it is determined that the threshing clutch 90A is not input, 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 in the half-opened state. , The engine 62 is not started.

  On the other hand, if there is no input from the half-opening detection sensor 120, that is, if it is determined that the upper cover 50D is in the closed state or the fully opened 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 3 Threshing device 4 Mowing device 6D Operating tool 12 Threshing part conveying device 12A Holding rod 12B Feed chain 14 Energizing means 34 Conveying device 36B Shaft 38 Hand lever (handholding control member)
62 Engine 85 Control Device 90A Threshing Clutch

Claims (3)

  A mowing device (4) is provided in front of a body frame (1) equipped with an engine (62), and a threshing device (3) is provided behind this mowing device (4). A threshing part transport device (12) for taking over and transporting the cut culm from the transport device (34) on the device (4) side is provided, and the threshing part transport device (12) includes a feed chain (12B) and the feed chain. A combiner equipped with a holding rod (12A) located above the (12B) and biased to the feed chain (12B) side by a biasing means (14) such as a spring, the transport end of the transport device (34). When the base portion of the hand-handling control member (38) is pivotally supported by the shaft (36B) in the left-right direction and the hand-handling control member (38) is swung downward, the hand-handling control member (38) is seen from the side. The rear end of the handle regulating member (38) is clamped The hand control member (38) is located rearward of the front end of (12A) and is arranged above the feed chain (12B) with a space to put the harvested culm on the feed chain (12B). When the hand-handling restricting member (38) is swung upward, the harvested culm can be placed on the feed chain (12B) and is switched to a non-restricting condition. Combine that is characterized.   When the operating tool (6D) arranged in the peripheral part of the threshing section transporting device (12) is operated, the engine (62) is stopped and the holding rod (12A) to the feed chain (12B) side. The combine according to claim 1, further comprising a control device (85) for releasing the urging of the combine.   When the clamping rod (12A) is biased toward the feed chain (12B) and the threshing clutch (90A) for transmitting the rotation of the engine (62) to the threshing device (3) side is disengaged, the engine ( 62) The combine according to claim 2, which is configured to start 62).

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