JP2019080569A - Combine - Google Patents

Abstract

To provide a combine for increasing working efficiency by easily removing grain culms or the like clogged in a threshing part transport device.SOLUTION: A combine is configured such that: a threshing part transport device provided on a lateral part of a thresher includes a feed chain 12B, and a nipping rod 12A nipping grain culms in a position facing the upper side of the feed chain 12B; a lock mechanism is provided for locking the nipping rod 12A to a position facing the upper side of the feed chain 12B; an actuator 54 is provided for releasing a lock state of the lock mechanism; and there is provided a control device which stops an engine and drives the actuator 54 when an operation tool arranged in the peripheral part of the threshing part transport device is operated, moves the nipping rod 12A upward by releasing the lock state of the lock mechanism, and forms a gap capable of removing foreign materials between the nipping rod 12A and the feed chain 12B.SELECTED DRAWING: Figure 20

Description

  The present invention relates to a combine.

  Conventionally, a sensor is provided to detect that a foreign object is caught between the feed chain of the combine and the pinch, or a grain clog is clogged, and the upper cover of the threshing apparatus is half-opened based on the detection result of this sensor A configuration (Patent Document 1) is proposed.

JP, 2009-195169, A

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

  Therefore, the main object of the present invention is to solve such problems.

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

  The invention according to claim 1 provides the traveling device (2) below the machine body frame (1) on which the engine (62) is mounted, and provides the reaper (4) in front of the machine body frame (1). In the combine having a threshing device (3) behind the reaper (4), a threshing part transport device (12) is provided on the side of the threshing device (3) for transporting the replanted grain gutter The apparatus (12) comprises a feed chain (12B) and a clamping rod (12A) for clamping the grain at a position facing the upper side of the feed chain (12B), the clamping rod (12A) being the feed chain (12A) 12B) is provided with a lock mechanism that locks at a position opposite to the upper side, and an actuator (54) that releases the lock state by the lock mechanism is provided, and the operation tool (4) disposed at the periphery of the threshing part transport device (12) 6D) If the lock mechanism is stopped, the engine (62) is stopped and the actuator (54) is driven to release the locked state of the lock mechanism to move the clamping lever (12A) upward, and the clamping lever (12A) A control device (85) is provided between the feed chain (12B) and the feed chain (12B) to form a clearance capable of removing foreign matter.

  The invention according to claim 2 is provided with a first detection means (120) for detecting a state in which the clamping rod (12A) has moved upward, and the clamping rod (12A) is moved upward by the first detection means (120). The combine according to claim 1, wherein the drive of the engine (62) is restrained when the moved state is detected.

  According to the invention as set forth in claim 1, a lock mechanism is provided for locking the clamping rod (12A) at a position facing the upper side of the feed chain (12B), and an actuator (54) for releasing the locked state by this lock mechanism is provided. When the operation tool (6D) provided on the periphery of the threshing part transport device (12) is operated, the engine (62) is stopped and the actuator (54) is driven to lock the lock mechanism The control device (85) is provided to release the gap between the clamping rod (12A) and the feed chain (12B) to move the clamping rod (12A) upward, thereby providing a clearance capable of removing foreign matter. By the operation of (6D), the engine (62) can be stopped and foreign matter can be easily removed from the gap between the clamping rod (12A) and the feed chain (12B), resulting in high working efficiency. Rukoto can.

  According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the first detection means (120) is provided for detecting the state in which the clamping rod (12A) has moved upward; When the first detection means (120) detects that the holding rod (12A) has moved upward, the drive of the engine (62) is held in check, so the holding rod (12A) is at the upper position. It is possible to prevent the engine (62) from being driven while moving to the above position, and to improve the safety of the auxiliary worker who removes the grain clogged in the threshing device (3).

It is a left view of a combine. It is a top view of a combine. It is a principal part left view of a threshing apparatus. It is principal part sectional drawing of a threshing apparatus. It is a principal part front view of a combine. It is a principal part front view of a combine. It is mounting explanatory drawing of the hydraulic continuously variable transmission for feed chains. (A) of the hydraulic continuously variable transmission for feed chains 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 view of a conveyance device. FIG. 6 is an explanatory view of the installation of another feed chain hydraulic continuously variable transmission. It is a partial cross-section top view of a threshing apparatus. It is principal part sectional drawing of a threshing apparatus. It is the E section enlarged view of FIG. It is explanatory drawing of the upper cover of a closed state. It is the F section enlarged view of FIG. It is explanatory drawing of the drive method of driving a 1st motor, releasing a 1st hook, and making an upper cover half-opened state. It is explanatory drawing of the drive method which operates an opening-and-closing lever, releases a 1st, 2nd hook, and makes an upper cover a full open state. It is explanatory drawing of the positional relationship of a half-opened 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-opened 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 a half-opened detection sensor and a contact body in the state which drives a 1st motor, releases a 1st hook, and makes an upper cover half-opened. It is explanatory drawing of the positional relationship of a half-opened detection sensor and a contact body in the state which operated the opening / closing lever, released the 1st, 2nd hook, and made the upper cover fully open. It is a partial cross-section top view of a threshing apparatus, and is explanatory drawing of the positional relationship of a half-opened 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 state. It is explanatory drawing of the method of restarting an engine.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. In addition, for the sake of easy understanding, the directions are described with the front side as the front side, the rear side as the rear side, the right side as the right side, and the left side as the left side as 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 consisting of a pair of left and right crawlers for traveling the soil surface below the body frame 1, and threshing and sorting at the upper left side of the body frame 1 In the front of the threshing device 3, there is provided a reaping device 4 for harvesting cereal grains in the field. The grain threshed and selected by the threshing device 3 is stored in a gren tank 5 provided on the right side of the threshing device 3, and the stored grain is discharged to the outside by a discharge cylinder 7. Further, on the upper right side of the fuselage frame 1 is provided a pilot seat 6 on which an operator boardes, and below the pilot seat 6 is provided an engine room 8 in which an engine 62 is mounted.

<Mowing device>
The reaper 4 is attached to a reaper frame 30, which is a main frame formed by a post-reproduction frame 28 and a reaper transmission case 29 horizontally disposed at the front end of the post-removal frame 28 in the left-right direction. The base of the post-harvesting frame 28 is attached to the right side of the lateral transmission barrel 36 pivotally supported at the upper part of the pair of left and right suspension racks 35, 35 on which the body frame 1 is erected. .

  The reaper 4 comprises a dividing weir 31 for separating planted grain weirs provided on the lower front side, a raising device 32 for causing a fallen planting weed provided on the rear side of the separating weed 31 and a raising device A cutting blade device 33 for cutting the origin of the planted rice straw provided at the rear lower part of 32 and a mowing cereal weir provided behind the raising device 32 and the cutting blade device 33 to one side of the threshing device 3 And a transport unit 34 configured to transport toward the threshing part transport unit 12 provided. The transfer device 34 is composed of a stock origin transfer device 34A for transferring the stock origin side of the harvesting grain weir and a ear tip transfer device 34B for transferring the tip side, and from the transfer device 34 to the threshing part transfer device 12 In order to prevent the fall of the grain gravel at the time of taking over, a support 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 throttling chamber 50. It is done.

  A cereal grain sensor that detects the amount of cereal grain that is transported to the front and back of the transport device 34 of the harvesting device 4 where the cropped cereals join together, the front side of the feed chain 12B, etc., 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 scale sensor 34C.

  In order to prevent the disturbance of the posture of the grain which is handed over from the end of the transfer device 34 to the start of the feed chain 12B, as shown in FIG. There is provided a handle lever (a "hand handle regulating member" in the claims) 38 swinging up and down around a shaft 38B extending in the left and right direction. An auxiliary rod 38A made of a spring plate or the like attached to a terminal end of the transfer device 34 by a fastening member such as a bolt is provided.

  The handle lever 38 is formed to have a width in the left-right direction of the hook 12A, and the rear end portion of the handle lever 38 is a hook to prevent malfunction of the handle lever 38 due to vibration or the like. It extends below the front of the weir 12A. Further, the auxiliary 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 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 fence 12A.

  During a normal reaping operation, the handle lever 38 is pivoted downward about the shaft 38B in order to restrict the grain basket from being placed on the auxiliary weir 38A and the feed chain 12B. State). On the other hand, at the time of handling operation, after lifting the front of the rod 12A upward in order to place the kernel on the auxiliary rod 38A and the feed chain 12B, the handle lever 38 is centered on the shaft 38B. Swing it upward as the (non-regulatory state).

  In addition, in order to improve the operability of the handle lever 38, the handle lever 38 is disposed offset from the hook 12A in the left-right direction, or the length of the handle lever 38 in the front-rear direction is shortened. Thus, the rear end of the handle lever 38 may not extend below the weir 12A.

  In addition, in order to maintain the posture of the grain transferred from the transfer device 34 to the threshing part transfer device 12 in an excellent manner, the auxiliary transfer is performed to a portion biased to the right of the upper surface or the lower surface of the support 37 facing the tip transfer device 34B. The device can also be arranged.

  The auxiliary transfer device is provided with a lugged belt moving from the front side to the rear side, and a buttocked belt, in order to transfer the tip of the grain basket handed over from the tip transfer device 34B to the feed chain 12B. In addition, the auxiliary transfer device transmits the rotation speed of the belt with a lag or the like by transmitting the rotation of a counter shaft 71, which will be described later, via the output shaft B of the feed chain hydraulic continuously variable transmission 10. It is preferable to use the same moving speed as Note that, instead of the feed chain hydraulic continuously variable transmission 10, a hydraulic mechanical continuously variable transmission configured by combining a hydrostatic continuously variable transmission and a planetary gear may be used.

  As shown in FIGS. 3 to 5, the left suspension rack 35 is attached to the upper side of a base 35 </ b> A erected on the airframe frame 1. A vertically extending feed chain pivot shaft 35B rotatably supporting a base of a lateral transmission frame 35C for pivotally supporting the left side of the lateral transmission barrel 36 is provided at the left front of the suspension rack 35. There is. Also, the lateral transmission frame is rotated to rotate the lateral transmission barrel 36 about the feed chain rotation shaft 35B to facilitate maintenance and inspection of the devices such as the sorting weir 31 and the raising device 32 of the reaper 4. 35C is formed in a circular arc shape having a convex portion downward from the base to the tip end in a front view. In addition, the threshing part conveyance apparatus 12 which conveys a cereal grain also rotates centering around the feed chain rotational axis 35B so that it may mention later.

  The right suspension rack 35 is attached to the upper side of a base 35 A erected on the airframe frame 1. At the upper end portion of the suspension rack 35, a support member 35D for pivotally supporting the right side portion of the lateral transmission barrel 36 is attached. The support member 35D is configured of a front side support member divided into a substantially semicircular arc shape and a rear side support member. When the right side portion of the lateral transmission barrel 36 is pivotally supported, the lateral transmission barrel 36 is centered on the feed chain rotation shaft 35B in order to engage the front and rear support members and perform maintenance of the reaper 4 or the transmission 65. When the reaper 4 is moved leftward, the front and rear support members are disengaged and the transverse transmission cylinder 36 is pulled forward. Further, in order to increase the rigidity of the left and right suspension racks 35, 35 against deformation or the like, a connecting frame 35E is provided in the middle in the vertical direction of the left and right suspension racks 35, 35.

  The rotation of the engine 62 is transmitted to the traveling hydraulic continuously variable transmission 66 via a pulley 66 B supported by the input shaft of the traveling hydraulic continuously variable transmission 66, and is transmitted to the traveling hydraulic continuously variable transmission 66. The transmitted rotation is supported by the right end portion of the lateral transmission shaft 36A installed in the lateral transmission cylinder 36 via a pulley (not shown) supported by the output shaft of the traveling hydraulic CVT 66. It is transmitted to the pulley 36A to rotate the lateral transmission barrel 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 conveying device 34, etc. of the reaper 4 via a transmission shaft (not shown) incorporated in the frames 27, 28. Be done.

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

<Threshing device>
As shown in FIG. 4, the threshing apparatus 3 has a processing chamber 50 for threshing the grain on the upper front side, and a sorting chamber 51 for sorting the threshed grains on the lower side of the processing chamber 50 There is.

  In the throttling chamber 50, a threshing drum 55 having a plurality of throttling teeth is supported by a threshing drum shaft 55A pivotally supported by the front and rear walls 50A, 50C. Then, the grain feed port 26A is opened at the lower left side of the front wall 50A of the throttling chamber 50, and the threshing port 26B is opened at the lower portion of the left wall 50B along the threshing cylinder 55, An outlet 26C is opened at the end. In addition, on the left side of the throttling chamber 50, a threshing part transport device 12 is disposed in parallel along the throttling port 26B to sandwich the grain origin and transport it backwards. The completed waste grit is handed over to the waste feeding device 58 provided at the rear of the threshing part feeding device 12 and further fed rearward, and then cut by a pair of waste gutters 59 and discharged to the outside .

  A swing sorting device 52 is provided in the upper portion of the sorting chamber 51, and a first scraper 53A for blowing air to the sheave in the front portion of the swing sorting device 52 is provided in the lower portion of the sorting chamber 51; Grain receiving 53B which collects leaking kernels, a second oysterwood 53C which blows air to the sheave at the rear of the rocking and sorting device, and a grain with a bellflower and the like leaking from the rocking and sorting device That is, the second rack 53D for collecting the second product is installed in order from the front side. The kernels collected by the first tray 53B are transferred to the gren tank 5 by the first transfer spiral 53b embedded in the first tray 53B, and the kernels collected by the second tray 53D are It is transferred to the second processing chamber by the No. 2 transfer spiral 53 d installed in the No. 53I.

  The right rear portion of the throttling chamber 50 communicates with the dust collecting chamber, and a dust collecting cylinder 57 having screw blades on its outer peripheral surface is axially supported in the inside of the dust collecting chamber. At the front of the chamber, a second processing chamber is provided for processing and reducing a second product. Inside the second processing chamber, a second processing cylinder 56 having an intermittent spiral blade on an outer peripheral surface thereof is pivotally supported. Further, on the upper rear side of the rocking sorting rack, a dust collecting fan 48 is disposed which sucks in scraps and the like generated at the time of threshing and sorting and discharges it to the outside of the machine.

<Threshing part conveyance device>
As shown in FIGS. 3 and 6 and the like, the threshing part transport device 12 includes a sandwiching rod 12A located on the upper side and a feed chain 12B located on the lower side. The clamping 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, 17B rotatably supported at the front and rear end portions of the upper chain rail 18A and a drive sprocket 17A provided between the tension wheels 17B, 17B. Is an endless chain. The working feed chain 12B placed on the upper chain rail 18A sandwiches the sandwiching weir 12A and the origin of the weir in the process of moving from the front side toward the rear. In addition, in order to prevent winding around the end of the feed chain 12B and the like of the grain to be transported, the rear tensioning ring 17B uses an idle sprocket provided with winding prevention plates 17D on both sides. Is preferred.

  In order to facilitate the speed adjustment of the speed VF1 of the feed chain 12B during the handling operation by the assistant worker performing the handling operation on the side surface of the upper cover 50D, the speed adjustment dial is provided. 6A is provided. Also, in order to efficiently adjust the speed VF of the feed chain 12B according to the amount of handling grain, the speed adjustment dial 6A is disposed around the auxiliary weir 38A on which the handling grain is placed. Alternatively, in order to efficiently assist an auxiliary operator who is unfamiliar with the operator sitting on the cockpit 6, the speed control dial 6A may be disposed on the side panel of the cockpit 6.

  A speed control pedal 45 is provided on the airframe frame 1 in front of the threshing device 3 to adjust the speed VF of the feed chain 12B during the handling operation together with or in place of the speed control dial 6A. It can also be done.

  In the side view, the holding rod 12A is provided to be inclined rearward and upward along the handling port 26B from the grain feed port 26A of the processing chamber 50 to the discharge port 26C. The upper chain rail 18A on which the feed chain 12B on the working side is mounted is inclined rearwardly from the front end of the horizontal shaft transmission cylinder 36, and then gently inclined rearward and upward to the front of the grain feeding port 26A of the processing chamber 50. After reaching it, it faces the clamping rod 12A and inclines backward along the handling port 26B from the grain feed port 26A of the processing chamber 50 to the discharge port 26C. After that, it extends horizontally rearward from the drainage port 26C, and then slopes downward to the 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 transport device 12 along with the change in the number of cutting strips of the cutting 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 feed chain 12B on the non-operation side is mounted is inclined rearwardly from the front end above the counter shaft 71 transmitting the rotation of the engine 62 to the drive sprocket 17A and reaches the rear end. The rear end of the lower side chain rail 18B is provided in front of the rear tensioning wheel 17B and below the exhaust port 26C.

  At the front end of the lower chain rail 18B, a guide 18D for guiding the non-working feed chain 12B to a drive sprocket 17A provided below the front end of the lower chain rail 18B is detachably mounted. . The guide 18D is provided above the counter shaft 71, and is formed in a substantially quarter circle shape. It is preferable to provide a cover (not shown) above the guide 18D in order to prevent contamination of the counter shaft 71 and the like due to dropping of oil or the like.

  On the lower side of the lower side chain rail 18B, a support frame 19 supporting the upper side chain rail 18A and the lower side chain rail 18B by a rail connection plate 18C is provided. That is, the feed chain 12 B is supported by the support frame 19. In addition, on the connection plate 18E connected to the upper side chain rail 18A and the lower side chain rail 18B, it is prevented that the scraps falling from the feed chain 12B during the transportation of the grain falls to the drive portion of the sorting chamber 51 A scale guide plate (not shown) for mounting is attached.

  The front end portion of the support frame 19 is attached to a plate 19A attached to a bracket 19B by a bolt or the like as shown in FIGS. 3 and 5, and the bracket 19B is a feed chain pivot shaft provided on the suspension rack 35 on the left side. It is rotatably mounted on the upper and lower ends of the 35B. The feed chain rotation shaft 35B is wound around the feed chain 12B in order to reduce the penetration of the tip end portion of the feed chain 12B into the machine body when the feed chain 12B rotates around the feed chain rotation shaft 35B. It is erected near the rear side of the front tension wheel 17B.

  The support frame 19 prevents the interference with the feed chain hydraulic continuously variable transmission 10 and the like, and the input shaft 10A and the gear box 68 of the feed chain hydraulic continuously variable transmission 10 from the front end in a side view. After extending backward between the output shafts 68B, the first variable speed motor 10C is bent approximately 90 degrees in the forward direction and extends upward. Then, the counter shaft 71 extends upward from the lower side of the guide 18D and inclines rearward and upward along the lower side of the lower chain rail 18B from the lower side of the guide 18D. It reaches the central part.

  By this, when performing maintenance and inspection of the feed chain 12B, the hydraulic continuously variable transmission 10 for feed chain, etc., 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 portion of the threshing device 3 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 pivot shaft 35B is provided on the front side of the front portion of the feed chain hydraulic continuously variable transmission 10. ing.

  In the side view, as shown in FIG. 3, the front tensioning ring 17B is provided in the front vicinity of the horizontal shaft transmission cylinder 36 for transmitting the rotation of the engine 62 to the reaper 4 and the rear tensioning ring 17B is It is provided in the back vicinity of the front end part of the tip conveying device 34A. The drive sprocket 17A is disposed between the tension wheels 17B and 17B on the front and rear sides in the front-rear direction and is biased toward the tension wheel 17B on the front side, and the horizontal shaft transmission cylinder 36 and the feed chain 12B In the approximate center of a counter shaft 71 for transmitting the rotation of the engine 62. In the vertical direction, it is positioned approximately at the center of a support frame 19 extending rearward and supporting the counter shaft 71 and the lower side chain rail 18B and the like. In addition, a tension sprocket 17C whose base is supported by a drive shaft 68D to be described later is provided between the tension wheel 17B on the front side and the drive sprocket 17A.

  As a result, the feed chain 12B moves upward from the drive sprocket 17A, and then moves along the tension sprocket 17C to reach the front tensioning ring 17B, and from the front tensioning ring 17B to the upper chain rail 18A. The upper side is moved toward the rear tensioning wheel 17B. Thereafter, the feed chain 12B moves from the rear tensioning wheel 17B toward the front lower chain rail 18B, and from the rear end of the lower chain rail 18B, the upper guide of the lower chain rail 18B is the front guide 18D. , Move along the guide 18D and reach the drive sprocket 17A.

  As shown in FIG. 6, the rotation of the engine 62 is transmitted to the feed chain hydraulic stepless transmission 10 via the counter shaft 71 and is accelerated and decelerated by the car box 68. It is transmitted to an output shaft 68B connected to the sprocket 17A.

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

  The rotation transmitted to the counter shaft 71 is transmitted to the threshing drum 55 via the pulley 71C supported on the left side of the pulley 71A and the belt 92, and to the right 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 through the supported pulley 71D, the belt 93 and the like. The rotation transmitted to the input shaft 10A of the feed chain hydraulic continuously variable transmission 10 is transmitted to the gear box 68 via the output shaft 10B as shown in FIG. And transmitted to the output shaft 68B. The rotation transmitted to the output shaft 68B is transmitted to the drive sprocket 17A of the feed chain 12A via the coupling 68C. The drive sprocket 17A is rotatably supported by the drive shaft 68D.

  The drive shaft 68D is supported by a plate 19C mounted on 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. 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 replaced safely. Note that, instead of the coupling 68C that connects the output shaft 68B and the drive shaft 68D, meshing clutches and claw clutches can also be provided at the end portions of the output shaft 68B and the drive shaft 68D facing each other.

  As shown in FIG. 7, the car box 68 is attached to the right side surface of the rear side plate 11B erected forward at a portion biased downward on the front wall 50A of the threshing apparatus 3 in the vertical direction. Further, in order to effectively utilize the space on the front side of the threshing device 3, the feed chain hydraulic stepless transmission 10 is attached to the left side surface of the car box 68, and further, the feed chain hydraulic stepless transmission On the rear side of 10, a first transmission motor 10C for rotating the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 is attached.

  Further, as shown in FIG. 14, a first transmission motor 10C for rotating the trunnion shaft 10F of the feed chain hydraulic stepless transmission 10 on the rear side of the feed chain hydraulic stepless transmission 10; It is also possible to mount side by side a second transmission motor 10E for rotating the trunnion shaft 10F at a high speed and having a larger output and the like than the transmission motor 10C.

  The gear 10c of the first transmission motor 10C attached to the machine frame 1 and the gear 10e of the second transmission motor 10E are engaged with the tip of the sector gear 10G whose base end is supported by the trunnion shaft 10F. There is. The control device 85 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 manual operation mode. In the reaper mode, the second gear shift motor 10E freely rotates, and in the manual mode, the first gear shift motor 10C freely rotates.

  The feed chain hydraulic continuously variable transmission 10 and the car box 68 can be mounted on the machine frame 1, and the first speed change motor 10C and the second speed change motor 10E can be mounted on the car box 68, and the input shaft 10A is provided. Instead of the feed chain hydraulic stepless transmission 10 in which the pump portion and the motor portion having the output shaft 10B are integrally formed, the feed chain hydraulic stepless transmission 10 is configured in which the pump portion and the motor portion are divided. It can also be used.

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

  The front end of the rear plate 11B and the rear end of the front plate 11A provided on the connecting frame 35E of the left and right suspension racks 35, 35 are connected by loosely inserted pins 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 a bolt. Further, below the lateral transmission shaft 36A, a cutting position sensor 36S for detecting the rotational position of the frame 28 after cutting in the vertical direction 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, hydraulic system paths such as the feed chain hydraulic stepless transmission 10 and the traveling hydraulic stepless transmission 66 etc. The control valve 9A for controlling the opening and closing of the valve is provided, and an oil tank 9B for supplying oil to the feed chain hydraulic continuously variable transmission 10, the traveling hydraulic continuously variable transmission 66 etc. is provided on the right of the control valve 9A. It is provided.

  In order to effectively utilize the space on the front lower side of the threshing device 3 and to prevent the interference of the feed chain 12B, the belt 93 and the like when the feed chain 12 rotates, the input shaft 10A of the feed chain hydraulic stepless transmission 10 The output shaft 10B and the output shaft 68B of the gear box 68 are vertically disposed vertically.

  In order to prevent hydraulic pressure loss, the input shaft 10 of the pump portion of the feed chain hydraulic continuously variable transmission 10 is provided below the output shaft 10B, 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, 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 apparatus 3 by the hinges 100 provided at the front and rear three places, and between the upper cover 50D and the machine frame of the threshing apparatus 3 The upper cover 50D is provided with an urging means 103 such as a gas spring for moving the upper cover 50D upward (in a front view, the upper cover 50D in the counterclockwise direction). Cover the upper portion of the threshing cylinder 55 and the clamping rod 12A is in a closed state in contact with the feed chain 12 B. Further, in order to keep the upper cover 50D in a closed state, the first and second hooks 50G and 50H, and the pin A lock mechanism consisting of 50K, 50N, etc. is provided.

  In order to easily remove foreign matter clogged between the feed chain 12B and the clamping wedge 12A or the clamping wedge 12C, as shown in FIGS. There is provided a first motor ("actuator" in the claims) 54 which is driven in conjunction with the operation of the "operation tool" 6D. Note that FIG. 18 illustrates the half-opened state and the fully-opened state of the upper cover 50D together in order to facilitate understanding.

  The first motor 54 is attached to the front surface of the upper cover 50D via a bracket 54F formed in a substantially inverted U-shaped cross section, and the bracket 54F bypasses the biasing means 103 to thereby make up the upper cover 50D. It extends forward from the front. In addition, in order to drive the first motor 54 to quickly open the upper cover 50D in the half-open state, the first motor 54 is disposed above the gear box 73 provided on the left side of the counter shaft 72 It is disposed at a position facing a notch 73B provided on the rear upper surface of the gearbox case 73A covering the periphery of the gearbox 73. Note that the upper side of the first motor 54 is covered by a front cover 50U that extends in the forward direction from the upper cover 50D.

  In order to half-open or half-open the side of the clamping rod 12A of the upper cover 50D, the lock of the first hook ("hook" in the claims) 50G and the pin 50K extending in the front and rear direction to the handling chamber 50 , And the second hook 50H whose total length is longer 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 extended in the front and rear direction to the second hook 50H and the handling chamber 50 It is also performed by releasing the lock state of

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

  The half-opened state refers to a state in which the side portion of the sandwiching rod 12A of the upper cover 50D is moved upward approximately 50 to 100 mm to remove foreign matter clogged on the feed chain 12B, and the fully-opened state is the upper cover In this state, the side of the 50D holding rod 12A is moved upward approximately 300 to 450 mm to perform maintenance and inspection of the feed chain 12B.

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

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

  One side of an arm 54B is attached to a rotation 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 connection arm 87 is formed in a substantially horizontal L shape in a front view, and a left lower portion of the first connection 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 swingably in the left and right direction centering on the

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

  The second connection arm 88 has a plate portion 88B in which an elongated hole 88A having a long diameter in the left-right direction is formed, and a rod portion 88C extending from the right side of the plate portion 88B toward the support shaft 87B of the first connection arm 87. It is formed of The right end of the rod portion 88C is connected to the support shaft 87B of the first connection arm 87.

  The third connection 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 the upper end portion of the third connection arm 89. It is inserted into the long hole 88A of the plate portion 88B. The lower end portion of the third connection arm 89 is fixed to the upper end portion of the first hook 50G.

  Both ends of biasing means 87C comprising a spring and the like for rotating the first connecting arm 87 clockwise about the support shaft 50M in front view are mounted on the lower part of the bracket 54F and the front face of the second hook 50H There is.

  Thus, as shown in FIG. 27, when the upper cover 50D is moved from the closed state to the half-opened state by the disengagement of the first hook 50G and the pin 50K, the second hook is generated by the compression force of the biasing means 87C. After the right side surface of 50H moves upward while sliding on pin 50N, the tip of second hook 50H is engaged with pin 50N. Next, when the upper cover 50D is moved from the half open state to the full open state by operating the open / close lever 50E, the second hook 50H rotates in the counterclockwise direction to the center of the shaft 50F. The end engages with a pin 50S provided on the front surface of the upper cover 50D in the front-rear direction.

  On the other hand, when manually moving the upper cover 50D from the fully open state to the closed state, it was attached to the grains carried by the feed chain 12B provided on the left side of the gearbox case 73A by the compression force of the biasing means 87C. The right side surface of the second hook 50H moves downward while slidingly contacting the pin 50N without interfering with the separation wall 50T that prevents the invasion of chips and the like into the processing chamber 50.

  When the first motor 54 rotates counterclockwise in front view interlocking with the operation of the stop switch 6D, the pin 54C of the arm 54B attached to the first motor 54 is the right side of the long hole 87A of the first connection arm 87. It engages with the end, and rotates the first connection arm 87 counterclockwise around the support shaft 50M.

  When the first connection arm 87 rotates counterclockwise around the support shaft 50M, the rod-like portion 88C connected to the support shaft 87B of the first connection arm 87 moves to the right to move the second connection arm 88 to the right. Move it.

  When the second connection arm 88 moves to the right, the support shaft 89A inserted into the long hole 88A of the plate portion 88B of the second connection arm 88 moves to the right, and the upper end of the third connection arm 89 is centered on the shaft 50F. Rotate counterclockwise.

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

  As a result, it is possible to easily remove foreign matter clogged between the feed chain 12B and the sandwiching rod 12A or the sandwiching rod 12C and to prevent the large amount of grains in the handling chamber 50 and the scattering of straws and the like to the outside of the machine body. can do.

  After the locked state between the first hook 50G and the pin 50K is released, the second hook 50H having a total length longer than that of 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 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 clamp 12C.

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

  In order to miniaturize 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 mounted on the shaft 50F between the first hook 50G and the second hook 50H. It is supported by the shaft 50Q.

  At the base of the opening and closing lever 50E, a piece 50L extending toward the first and second hooks 50K and 50H and engaged with the proximal end of the first and second hooks 50K and 50H is provided. Further, biasing means 50P consisting of a torque spring or the like for keeping the first hook 50K in a locked state is fitted on the cylindrical shaft 50Q, and one end side of the biasing means 50P is engaged with the first hook 50K. The other end is engaged with the upper cover 50D.

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

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

  When the opening and closing lever 50E is moved upward about the cylindrical shaft 50Q, the piece 50L provided at the base of the opening and closing lever 50E engages with the base of the second hook 50H. When the opening / closing lever 50E is moved further upward around the cylindrical shaft 50Q in a state in which the piece 50L is engaged with the base of the second hook 50H, the second hook 50H is upward (about the front view in 2) The hook 50H is moved counterclockwise to release the locked state with the pin 50N, and the biasing means 103 moves the upper cover 50D further upward centering on the pin 101 to be fully opened. As a result, even when the first motor 54 can not 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 coupled to the first hook 50G moves in the left direction about the shaft 50F. However, since the long hole 88A is formed in the second connection arm 88, the support shaft 89A of the third connection arm 89 can move in the left direction in the long hole 88A of the second connection arm 88, and the upper portion The cover 50D can be in a half open state or a full open state.

  Similarly, when the first hook 50G is moved upward by the opening and 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 in the left direction. However, since the long hole 87A is formed in the first connection arm 87, the first connection arm 87 is in a state where the pin 54C provided on the arm 54B attached to the first motor 54 is fitted in the long hole 87A. The upper cover 50D can be half-opened or fully open.

  In order to move the first and second hooks 50G and 50H more easily by the opening and 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 as to maintain a large distance between the right end of the long hole 87A formed in the first connecting arm 87 and the pin 54C. is there.

  In order to make it possible to visually recognize the rotational state of the first hook 50G from the outside of the upper cover 50D, as shown in FIGS. 18 and 20 etc., a marker that rotates with the first hook 50G on the rear surface of the first hook 50G. The unit 50R is attached. The marker portion 50R is a member that extends from the rear surface of the first hook 50G in the vicinity of the shaft 50F in the outward direction of the airframe and protrudes outside the upper cover 50G, and is provided above the opening / closing lever 50E.

  When the first hook 50G and the pin 50K are in the locked state, as shown in FIG. 18, the marker unit 50R and the opening / closing lever 50E approach in the vertical direction and are in a substantially contact state.

  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, as shown in FIG. It is located above the opening and closing lever 50E. That is, when the first motor 54 is driven to release the lock between the first hook 50G and the pin 50K and the open / close lever 50E is not operated, the marker 50R and the open / close lever 50E are opened. The lever 50E is separated in the vertical direction.

<Half-opened state detection mechanism of upper cover>
Next, the half-opened detection sensor ("first detection means" in claims) 120 and the contact body 125 for detecting the half-opened state of the upper cover 50D will be described. In order to remove the grain entangled between the holding rod 12 and the feed chain 12B etc., the half-opened detection sensor 120 operates the stop switch 6D by an assistant worker who is performing a manual operation to remove the feed chain 12B. The first motor 54 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 open state of the upper cover 50D.

  As shown in FIGS. 22 to 26, in order to arrange the detection sensor 120 and the contact body 125 compactly utilizing the internal space of the gear box case 73A, the half-opened detection sensor 120 is provided 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-opened detection sensor 120 is attached to a 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 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 a cutout. After passing through the portion 73B, the gear box case 73A is moved upward.

  FIG. 22 shows the position of the contact body 125 detected by the half-opened detection sensor 120 and the half-opened detection sensor 120 when the first hook 50G engages with the pin 50K and the top cover 50D is closed. In the closed state of the upper cover 50D, the contact body 125 is located below the half-opened detection sensor 120, and the half-opened detection sensor 120 is in the OFF state.

  FIG. 23 shows the positions of the half-opened detection sensor 120 and the contact body 125 at the start of the movement of the upper cover 50D in the counterclockwise direction due to the engagement between the first hook 50G and the pin 50K and the biasing means 50P. At the start of the movement of the upper cover 50D, the contact body 125 is located below the half-opened detection sensor 120, and the half-opened detection sensor 120 is in the OFF state.

  In FIG. 24, the engagement between the first hook 50G and the pin 50K is released, and the biasing means 50P causes the upper cover 50D to move in the counterclockwise direction to move the upper cover 50D in the half-opened state. Indicates the position of. In the half-opened state of the upper cover 50D, the contact body 125 contacts the half-opened detection sensor 120, and the half-opened detection sensor 120 is turned on.

  In FIG. 25, the engagement between the first hook 50G and the pin 50K is released, and the biasing means 50P causes the upper cover 50D to move further in the counterclockwise direction to contact the half open detection sensor 120 when the upper cover 50D is fully open. The position of the body 125 is shown. In the fully open state of the upper cover 50D, the contact body 125 is located above the half-opened detection sensor 120, and the half-opened detection sensor 120 is in the OFF state.

Transmission mechanism
Next, the transmission mechanism of the present 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 CVT 10 and a second path B transmitted to the traveling hydraulic CVT 66. And a third path C which is transmitted to the front gear box 39 of the glen tank 5 to be transmitted.

  In the first path A transmitted to the feed chain hydraulic continuously variable transmission 10, the rotation of the engine 62 is achieved 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. In the first path A, a threshing clutch 90A is provided that connects and blocks transmission to the transmission downstream side of the belt 90.

  The rotation of the counter shaft 71 is transmitted to the second processing cylinder 56 and the dust collection processing cylinder 57 via the pulley 71B and the belt 91 etc., 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 threshing drum 55 and the discharge and transfer device 58 via the gear box 73 and the threshing drum shaft 55A.

  In order to facilitate maintenance and inspection work of the gear box 73, a meshing clutch for operating connection and disconnection between the gear box 73 and the threshing drum shaft 55A on the front side of the gear box 73 provided on the front side of the throttling chamber 50; A threshing drum 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 threshing drum clutch 74 coaxially with the threshing drum shaft 55A.

  In addition, on the transmission downstream side of the threshing drum clutch 74, a threshing drum brake 75 such as a wet multi-disc brake for stopping the rotation of the threshing drum shaft 55A may be further provided in order to stop driving the throttling drum 55 urgently. . In order to facilitate maintenance and inspection work of the threshing drum brake 75, it is preferable to support the threshing drum brake 75 on a shaft 75B provided in parallel with the threshing drum shaft 55A on the lower side of the gear box 73. The shaft 75B is interlocked with the spur gear fixed to the threshing drum shaft 55A, and the threshing drum shaft 75A is stopped by the threshing drum brake 75 braking the shaft 75B.

  As shown in FIG. 9, the rotation of the counter shaft 71 is transmitted to the input shaft 10A through the pulley 71D, the belt 93, and the pulley 10D supported by the input shaft 10A of the feed chain hydraulic continuously variable transmission 10. Be done. Furthermore, 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 iron 53A, the first transfer spiral 53b, the second third iron 53C, the second transfer spiral 53d, dust It is transmitted to the fan 48, the swing sorting device 52, and the discharge cutter 59.

  The rotation of the input shaft 10A is transmitted to the gear box 68 through the output shaft 10B, and after being accelerated and decelerated by the plurality of gears 68A installed in the gear box 68, the output shaft 68B supported by the gear box 68 It is transmitted.

  The gear box 68 is provided with a feed chain speed sensor 10S that measures the rotational 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 through the coupling 68C, and is transmitted to the feed chain 12B through the drive sprocket 17A supported at the left end of the drive shaft 68D. As shown in FIG. 5, the feed chain 12B is located on the inner side of the machine than the center of the feed chain 12B as shown in FIG. The feed chain rotation shaft 35B is provided at the center, and the feed chain rotation shaft 35B is vertically extended in the vertical direction, and the left end of the output shaft 68B is on the left side of the left end of the counter shaft 71 as shown in FIG. The drive sprocket 17A is extended and supported on the left side of the pulley 71E.

  A main shift lever 16 for remotely operating the traveling hydraulic CVT 66 is provided on the left side of the operator's seat 6, and a transmission 65 is provided on the rear side of the main shift lever 16 according to the fallen state of the gardening fence. An auxiliary transmission lever 15 is provided for switching the stepped auxiliary transmission provided in the internal transmission mechanism. The main shift lever 16 is provided with a speed increasing switch 16A for remotely operating the feed chain hydraulic continuously variable transmission 10 and a speed reducing switch 16B. By pressing and holding the speed increase switch 16A 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 maximum rotation speed, and the speed increase switch 16A is briefly pressed for about 1 second. Then, the rotation of the output shaft 10B can be made stepwise faster. Similarly, when the reduction switch 16B is pressed 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 reduction switch 16B is shortened by about 1 second. When pressed, 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. Further, a main shift lever position sensor 16S for measuring the shift position of the main shift lever 16 is provided below the main shift lever 16, and a shift position of the sub shift lever 15 is measured 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 is determined by the pulley 70B supported by the crankshaft 70, the belt 96, and the traveling hydraulic continuously variable transmission 66. This traveling hydraulic continuously variable transmission 66 is inputted through the pulley 66B supported by the input shaft.

  The rotation of the input shaft of the traveling hydraulic CVT 66 is transmitted to the transmission 65 through the output shaft of the traveling hydraulic CVT 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 end of the axles 65A. In addition, the output shaft of the traveling hydraulic CVT 66 is output from an output shaft 65C which is output from a portion on the transmission side in the transmission 65 on the upper side of the auxiliary transmission, the tip portion of the output shaft 65C. Is transmitted to a pulley 36B supported at the right end of the lateral transmission shaft 36A via an output pulley 65D attached to the transmission belt 65E. A cutting clutch 65F is configured as a configuration for biasing the tension roller to the transmission belt 65E.

  That is, after the rotation of the engine 62 transmitted to the input shaft of the traveling hydraulic continuously variable transmission 66 is increased / decreased by the traveling hydraulic continuously variable transmission 66, it is branched and one is supported by the transmission 65. The traveling speed of the traveling device 2 is transmitted to the crawler of the traveling device 2 via the left and right axles 65A, and to the raising device 32 and the conveying device 34 of the reaper 4 via the lateral transmission shaft 36A. V, the raising speed of the raising device 32 of the reaper 4 and the transfer speed VH of the transfer device 34 are determined with a fixed relationship. For example, when the traveling speed V of the traveling device 2 is high, the raising speed of the raising device 32 of the reaper 4 and the transfer speed VH of the conveying device 34 are also high, and the traveling speed V of the traveling device 2 is low. In this case, the raising speed of the raising device 32 of the reaper 4 and the transfer speed VH of the transfer device 34 also become low. A traveling speed sensor 66S for measuring the rotational speed and a conveyance speed sensor 34S are respectively provided on the axle 65A and the lateral transmission shaft 36A.

  Further, in the transmission path in the transmission 65, the left and right side clutch gears 65H are rotatably supported on both left and right side portions of a center gear 65G provided at a position on the lower side than the sub transmission. . A claw clutch type left and right side clutch 65I is formed between the center gear 65G and the left and right side clutch gears 65H. The left and right axle clutches attached to the base of the left and right axles 65A are engaged with the left and right side clutches 65I.

  The left and right side clutches 65I slide the side clutch gear 65H in the left and right direction by a shifter (not shown) operated by a left and right tilting operation of a steering lever disposed in front of the cockpit 6 to move from the center gear 65G. It becomes a transmission interruption state by leaving it.

  Further, the left and right side clutches 65I are interlocked with the stepping-in operation of the scratching pedal 22 disposed on the lower front step of the pilot seat 6, and when the scratching pedal 22 is depressed, the left and right side clutches The center gear 65G and the side clutch gear 65H are disengaged through 65I, and the rotation of the engine 62 is not transmitted to the axle 65A. On the other hand, when the depression of the scratching 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 cut to the very edge, the main shift lever 16 is operated to the neutral position and stopped, and the scratching pedal 22 is depressed to set the center gear 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 to the forward side again with the combine stopped, the output shaft 65C is driven by the output of the traveling hydraulic CVT 66, and the reaper 4 is driven via the reaper clutch 65F. Be done. At this time, since the left and right side clutches 65I are disconnected, the traveling device 2 is not driven forward and maintains the stopped state. With this configuration, it is possible to cut the planted grain weirs in the reaper 4 by the operation of the scraping pedal 22 and the main shift lever 16 in a state where it is cut to the very edge and stopped.

  In addition, the reaper clutch 65F can be interlocked with the depression operation of the scratching pedal 22.

  That is, when the scratching pedal 22 is stepped on, the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the reaper 4 are connected via the reaper clutch 65F to drive the reaper 4. On the other hand, when the depression of the take-off pedal 22 is released, the connection between the output shaft 65C of the transmission 65 and the lateral transmission shaft 36A of the reaper 4 is released via the reaper clutch 65F to stop the drive of the reaper 4 Do.

  When one side of the field is cut to the very limit, the main shift lever 16 is operated to the neutral position to stop the vehicle body. In a state where the combine is stopped, the reaper 4 is driven when the scratching pedal 22 is depressed. At this time, since the main shift 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 achieved by the lower part 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. Further, 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 grain tank 5. The third path C is provided with a discharge clutch 97A for connecting and blocking transmission to the transmission downstream side of the belt 97.

<Control device>
On the input side of the control device 85 provided in the pilot seat 6, as shown in FIG. 10, the traveling speed sensor 66S for detecting the speed V of the traveling device 2 and the speed VH of the transport device 34 of the reaper 4 A feed 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 carrying device 12, an auxiliary shift lever position sensor 15S for detecting the lever position of the auxiliary shift lever 15; Speed adjustment dial for increasing / decreasing the speed VF of the feed chain 12B provided on the side surface of the upper cover 50D and the speed increasing / decreasing switch 16A, 16B for increasing / decreasing the speed VF of the feed chain 12B provided on the main shift lever 16 6A, a mode switch ("second detection means" in the claims) 6B for switching to the handling mode, and a feed switch 12B reverse rotation from the rear side to the front side, a grain sensor 34C for detecting the presence or absence of the grain carried on the feed chain 12B, and a feed provided on the side surface of the upper cover 50D The stop switch 6D for stopping the drive of the chain 12B urgently, the start switch 6E for starting the engine 62, the reaper clutch 65F for transmitting the rotation of the engine 62 to the reaper 4 and transmitting the rotation of the engine 62 to the threshing device 3 A threshing clutch 90A, a discharge clutch 97A for transmitting the rotation of the engine 62 to the grain tank 5, and a half-open detection sensor 120 for detecting a half-opened state of the upper cover 50D are connected via a predetermined input interface circuit.

  On the other hand, on the output side, the first transmission motor 10C for driving the trunnion shaft 10F of the feed chain hydraulic continuously variable transmission 10 in the normal reaping mode, and the hydraulic continuously variable transmission for feed chain in the manual operation mode A second transmission motor 10E for driving the trunnion shaft 10F of 10, and a first motor 54 for driving a first hook 50G for keeping the upper cover 50D of the handling chamber 50 in a locked state on the output side of the control device 85; A predetermined output interface circuit is a second motor 74A for driving the threshing drum clutch 74 for interrupting transmission of the engine 62 and the throttling barrel 55, and a third motor 75A for interrupting the throttling drum brake 75 for urgently stopping the throttling barrel 55. Connected through.

  The mode switch 6B is not limited to the switch manually operated by the operator. That is, in order to prevent the disturbance of the posture of the grain which is handed over from the end of the transfer device 34 of the reaper 4 to the start of the feed chain 12B, the end of the transfer device 34 swings vertically. An auxiliary lever 38A is provided below the handle lever 38 and the handle lever 38. At the time of switching to the handle mode, the handle lever 38 is pivoted upward about the shaft 38B in order to place the handle grain on the auxiliary rod 38A and the feed chain 12B. Switch from state to non-regulatory state. It is also possible to provide a switch (mode switch) 38C that turns on / off in conjunction with the operation of swinging the handle lever 38, and to use the switch 38C as the mode switch 6B.

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

(First drive method of feed chain)
FIG. 11 illustrates a first driving method of the speed VF of the feed chain 12B. The horizontal axis indicates the traveling speed V of the traveling device 2 detected by the traveling speed sensor 66S, and V1, 2 are 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 2 are the first and second set values of the speed VF of the feed chain 12B, and the vertical axis on the right is the transport speed The velocity VH of the transfer device 34 detected by the sensor 34S is shown, and VH1, 2 are the first and second setting values of the transfer velocity VH, and VH1, 2 are the first and second setting values of the traveling velocity V of the traveling device 2 It corresponds to the speed of V1, 2 o'clock.

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

  First, the controller 85 determines whether the mode switch 6B is input or not. If it is determined that the mode switch 6B is not input, the controller 85 determines the velocity VH of the transport device 34 (the transport speed sensor 34S It is determined whether or not the input value) from is lower than the first set value VH1.

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

Formula 1 VF = K × V
However, K = VH1 / V1
On the other hand, when the velocity VH of the transfer device 34 is determined to be equal to or higher than the first set value VF1, the velocity VF of the feed chain 12B can be calculated by the following equation 2 as shown in the second state. 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 the speed VF of the feed chain 12B (the 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 velocity VF of the feed chain 12B is lower than the second set value VH2 of the transport device 34, the velocity VF of the feed chain 12B is set to the velocity calculated by equation 2 as shown in the second state. Control.

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

(2nd 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 velocity VF of the feed chain 12B, the broken line indicates the velocity VH of the transfer device 34, and the same members as those in the first driving method are denoted by the same reference numerals and redundant description will be omitted.

  First, the controller 85 determines whether the mode switch 6B is input or not, and when it is determined that the mode switch 6B is not input, the speed VF of the feed chain 12B in the first to third states described above is maintained. 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 formula 3. The speed VF of the feed chain 12B can be increased or decreased in the range of 10 to 20% by the speed adjustment dial 6A.

Formula 3 VF = 0.25 to 0.5 × VH1
<How to open the top cover in half>
Next, a method of bringing the upper cover 50D into the half-opened state will be described based on FIG.

  In the handling operation of the combine, the threshing part transport device 12 may be clogged. In order to eliminate the clogging of the grain pods, it is necessary to interrupt the handling operation, stop the engine 62 and pull out the grain pods that have become stuck from the threshing part transport device 12 and perform removal work. In the removal operation, when the upper cover 50D is fully opened, cereal grains not to be pulled out and held by the threshing part conveyance device 12 may fall from the threshing part conveyance device 12 or enter the inside of the throttling chamber 50. Since there is a risk, it is preferable to pull out only the clogged grain with the top cover 50D in a half-opened state. Therefore, in the present embodiment, the upper cover 50D can be held in a half-opened state, thereby facilitating the removal operation of pulling out the clogged cereal grains from the threshing portion conveyance device 12.

  In the following description, the locked state of the first hook 50G means the 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 in which the pin 50K is not engaged. The locked state of the second hook 50H means that the second hook 50H can be engaged with the pin 50N, and the released state of the second hook 50H is engaged with the pin 50N even if the upper cover 50D is rotated. Not state.

  In step S1, the control device 85 determines whether or not there is an input of the stop switch 6D. If it is determined that there is no input of the stop switch 6D, the drive of the engine 62 is continued to keep the upper cover 50D closed. Do.

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

  In step S 2, the control device 85 includes a reaper clutch 65 F provided between the engine 62 and the reaper 4, a threshing clutch 90 A provided between the engine 62 and the threshing device 3, an engine 62 and a gren tank 5. It is determined whether or not there is an input of the discharge clutch 97A provided between them, and there is no input of all the clutches of the reaper clutch 65F, the threshing clutch 90A, and the discharge clutch 97A, that is, the reaper clutch 65F and the threshing clutch 90A, If it is determined that the connection of all the clutches of the discharge clutch 97A is released, the drive of the engine 62 is continued, and the upper cover 50D is maintained in the closed state.

  On the other hand, any of the reaper clutch 65F, the threshing clutch 90A, and the discharge clutch 97A has an input of one clutch, ie, any one of the reaper clutch 65F, the threshing clutch 90A, and the discharge clutch 97A is connected If it is determined that the vehicle is in the off state, 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 of mode switch 6B for switching between normal reaping work and handling operation, and when there is no input of mode switch 6B, that is, when it is determined that it is normal reaping work, the upper cover Keep 50D closed.

  On the other hand, when there is an input of the mode switch 6B, that is, when it is determined that the operation is in the manual operation state, the process proceeds to step S5, the first transmission motor 10C is driven and the trunnion shaft 10F of the nonpressure , And the first motor 54 is driven to release the locked state of the first hook 50G and the pin 50K, and the upper cover 50D is brought into the half-opened state. In addition, the operator who has been carrying out the handling operation is notified to the operator who has boarded the cockpit 6 that the upper cover 50D is in the half-opened state and the grain coffin entangled in the threshing part conveyance device 12 is being worked. In order to do so, it is preferable to sound a 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 connecting the first motor 54 and the first hook 50G moves downward from above the first motor 54. It shows.

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

  In a state where the locked state of the first hook 50G and the pin 50K is released by the driving 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 And the first hook 50G is moved by a pull-down operation to pull the upper cover 50D downward to lock the pin 50K with the pin 50K. It can not be returned to. In this state, as shown in FIG. 20, the marker unit 50R is spaced above the opening / closing lever 50E.

  Therefore, in order to move the first hook 50G to the locked state with the pin 50K by pulling down the upper cover 50D downward, the stop switch 6D is operated again, as shown in FIG. The motor 54 is rotated counterclockwise to move the connecting arm 86 connecting the first motor 54 and the first hook 50G upward from below the first motor 54, and the pin 54C of the first motor 54 and the (1) After releasing the engagement with the end of the long hole 87A of the connection arm 87, the first hook 50G and the pin 50K are locked by the pull-down operation to lower the upper cover 50D downward, and the upper cover 50D is closed Can be

  In this state, as shown in FIG. 21, the marker unit 50R is located above and close to the opening / closing lever 50E, and alternate operation is performed on the stop switch 6D in order to improve the operability of the stop switch 6D. It is preferable to adopt a switch that performs the

  Further, in the embodiment described above, the stop switch 6D is operated again to rotate the first motor 54 counterclockwise to move the connecting arm 86 upward from below the first motor 54, thereby However, after the stop switch 6D is operated, the first motor 54 is automatically turned off when a predetermined time elapses after the stop switch 6D is operated. By rotating clockwise, the connecting arm 86 is moved upward from below the first motor 54 to release the engagement between the pin 54C of the first motor 54 and the end of the long hole 87A of the first connecting arm 87. You can also

<How to restart the engine>
Next, a method of restarting the engine 62 will be described based on FIG.

  In step S6, the control device 85 determines whether or not there is an input of the start switch 6E. If it is determined that there is no input of the start switch 6E, the engine 62 is not started.

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

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

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

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

  On the other hand, if there is no input of the half-opened detection sensor 120, that is, if it is determined that the upper cover 50D is in the closed state or the fully open state, the process proceeds to step S9 and the engine 62 is started. It is preferable to start and stop the engine 62 by opening and closing a supply valve (not shown) that supplies the engine 62 with fuel.

DESCRIPTION OF SYMBOLS 1 airframe frame 2 traveling apparatus 3 threshing apparatus 4 reaping apparatus 6D operation tool 12 threshing part conveyance apparatus 12A pinching rod 12B feed chain 54 1st motor (actuator)
62 engine 85 control device 120 first detection means

Claims (2)

  A traveling device (2) is provided below the machine body frame (1) on which the engine (62) is mounted, and a cutting device (4) is provided in front of the machine body frame (1). In the combine equipped with the threshing device (3), the threshing part transport device (12) for transporting the reaping grain casket on the side of the threshing device (3) is provided, and the threshing portion transport device (12) (12B) and a clamping weir (12A) for clamping the grain at a position facing the upper side of the feed chain (12B), and the clamping weir (12A) is at a position facing the upper side of the feed chain (12B) A lock mechanism for locking is provided, an actuator (54) for releasing the locked state by the lock mechanism is provided, and when the operation tool (6D) disposed at the peripheral portion of the threshing part transport device (12) is operated, Said en (62) is stopped and the actuator (54) is driven to release the locked state of the lock mechanism to move the clamping rod (12A) upward, and the clamping rod (12A) and the feed chain (12B) And a control device (85) for forming a clearance capable of removing foreign matter between the two.   A first detection means (120) for detecting a state in which the clamping rod (12A) moves upward is provided, and a state in which the clamping lever (12A) is moved upward is detected by the first detection means (120) The combine according to claim 1, wherein the drive of the engine (62) is restrained.

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