JP5735385B2 - Combine - Google Patents

Description

  The present invention relates to a combine, and more particularly to a drive mechanism for a harvesting portion of a general purpose combine.

  Conventionally, there exists what was disclosed by patent document 1 as one form of a combine. That is, such a combine is a full-pile throwing type that has a cutting part in front of the airframe and throws all of the cereals harvested by the cutting part into a threshing part provided in the airframe for threshing.

  The reaping part includes a scraping reel that scrapes the culm planted in the field, a cutting blade device that cuts the stock of the culm scraped by the scraping reel, and a culm harvested by the cutting blade device. It includes a platform on which a scraping auger that is laterally fed while being scraped is mounted, and a feeder house that has a built-in conveyor for conveying the cereals that have been laterally fed by the scraping auger to the rear.

  Each operating part of these cutting parts is operated by receiving power from, for example, an engine mounted on the machine, and in particular, the cutting part is synchronized with the traveling speed of the machine so that the cutting work can be performed more smoothly. Things are known.

  In other words, each operating part of the cutting unit is operated at a high speed if the traveling speed of the airframe is fast, and is operated at a low speed if the traveling speed is slow. Is trying to stop.

JP 2009-225761 A

  By the way, as an example of the harvesting work by the combine, first, as shown in FIG. 14A, the harvesting may be started from the grain culm 301 planted in the vicinity of the culm 300 of the field 302.

  When the machine body 303 is advanced along the ridge 300 and the cutting is finished to the end of the field 302 as shown in FIG. 14B, the machine body 303 is temporarily stopped to change the direction, and then, as shown in FIG. As shown, it is necessary to move backward by a predetermined distance and advance the machine body 303 obliquely to an uncut area to secure a turning space.

  However, in the above-described conventional combine equipped with a cutting unit that is driven in synchronization with the speed, when the machine is stopped at the field end, the cutting unit is also stopped.

  Therefore, a part of the cereal husks housed in the platform are not recoiled by the take-up reel or the take-up auger when the aircraft is stopped or moved backward. Or dropped from the platform due to inertia.

  The present invention has been made in view of such circumstances, and includes a cutting unit that is driven in synchronization with the vehicle speed, but when the aircraft is stopped or retracted, the vehicle speed can be adjusted at an arbitrary timing of the operator. Provided is a combine that can drive a cutting unit regardless of the operation.

In order to solve the above-described conventional problems, in the present invention according to claim 1, a cutting unit is connected to the front of the machine body that has a traveling unit and is capable of self-running, and the cutting unit is connected to the traveling unit of the machine body. In a combine in which the cutting speed of the cutting unit and the traveling speed of the traveling unit are synchronized, the cutting unit forcible driving means for forcibly driving the cutting unit even when the traveling unit is stopped or moved backward the provided, along with the reaper provided vertically movable a raking reel and allow raking the field of Koku桿by rotary operation, the operation of the reaper forced drive means, and Rukoto is interlocked with the lowering of the reel scraping did.

  The invention according to claim 2 is characterized in that, in the combine according to claim 1, the operating body for operating the mowing part forcible drive means is a stepping-type pedal.

According to the first aspect of the present invention, the cutting unit is connected to the front of the airframe body that has the traveling unit and is capable of self-running, and the cutting unit is interlocked to the traveling part of the airframe body, In a combine that synchronizes the cutting speed with the traveling speed of the traveling section, even when the traveling section is stopped or retreated, a cutting section forcible drive means that forcibly drives the cutting section is provided, so it is synchronized with the vehicle speed. Thus, it is possible to provide a combine that can drive the cutting unit regardless of the vehicle speed at any timing of the operator when the machine body is stopped or retracted while the cutting unit is driven. In addition, this makes it possible to improve workability especially at the shore. In addition, the harvesting part is provided with a scraping reel that can scrape the cereals of the field by rotating operation, and the lowering of the scraping reel is linked to the operation of the cutting part forced drive means, so that It is possible to improve the scratching ability of the cereal and prevent the cereal from being dropped as much as possible.

  According to the second aspect of the present invention, since the operating body for operating the reaping portion forcible driving means is a stepping-type pedal, for example, when securing a turning space, by operating a handle or operating each lever. Even when both hands are occupied, the cutting unit can be driven at an arbitrary timing of the operator regardless of the vehicle speed.

It is the left view which showed the whole structure of the combine which concerns on this embodiment. It is the right view which showed the whole structure of the combine which concerns on this embodiment. It is the left view which showed the harvesting part of the combine which concerns on this embodiment. It is the front view which showed the harvesting part of the combine which concerns on this embodiment. It is the top view which showed the harvesting part of the combine which concerns on this embodiment. It is a right view of the harvesting part of the combine which concerns on this embodiment. It is the rear view which showed the harvesting part of the combine which concerns on this embodiment. It is a power transmission mechanism diagram of a combine according to the present embodiment. It is explanatory drawing which showed the hydraulic circuit of the combine which concerns on this embodiment. It is the top view which showed the operation part of the combine which concerns on this embodiment. It is explanatory drawing which showed the electrical structure of the combine which concerns on this embodiment. It is a flow of a cutting part forced drive process performed by a work controller. It is explanatory drawing which showed the structure of the power transmission of the combine which concerns on a modification. It is explanatory drawing which showed the mode of cutting in the agricultural field.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

  As shown in FIGS. 1 and 2, the combine 1 has a machine body 3 disposed immediately above a pair of left and right crawler type traveling units 2, and a cutting unit 4 is attached to the front of the machine body 3. In the airframe 3, the threshing unit 5 and the sorting unit 6 are arranged on the left side in the upper and lower stages, and the waste disposal unit 7 is arranged in the right side thereof, while the driving unit 8, the grain storage unit 9 and the prime mover unit are arranged on the right side. 10 are sequentially arranged in the front-rear direction. Reference numeral 11 denotes an engine provided in the prime mover unit 10, reference numeral 12 denotes an unloading body for bagging provided in communication with the grain storage unit 9, and reference numeral 75 denotes an output auger provided in communication with the grain storage unit 9.

  The traveling units 2, 2 are provided with driving wheels 54 at the rear end of the traveling frame 53 attached to the lower part of the body 3 via a transmission case 57 (see FIG. 8), and at the front end of the traveling frame 53. The idler wheel 55 is rotatably supported, and a crawler belt 56 is wound between the drive wheel 54 and the idler wheel 55, and the driving force of the engine 11 is transmitted to the traveling unit 2 via the transmission case 57. It can be self-propelled by transmitting to 2.

  The cutting unit 4 includes a feeder house 20, a platform 21, a cutting blade device 22, a pair of left and right dividers 23 and 23, and a take-up reel 24.

  Specifically, as shown in FIGS. 3 to 5, the feeder house 20 is formed in a rectangular cylindrical shape extending in the front-rear direction, and a conveyor 27 (for transporting the harvested cereal from the front to the rear in the interior) 8) is provided. The feeder house 20 is arranged on the lower left side of the operation unit 8, and the rear end is pivotally supported at the front part of the machine body 3 so as to be movable up and down, and is moved up and down by a lifting hydraulic cylinder 26 (see FIG. 1 or FIG. 2). It is adjustable. Further, as shown in FIG. 8, the conveyor 27 is formed by winding a conveyor belt 30 between a drive shaft 28 and a driven drum 29.

  The platform 21 is formed in a casing shape that is substantially the same width as the left and right width of the machine body 3 and has a front opening. The platform 21 is connected to the front end opening (carrying inlet) of the feeder house 20 at the left side, and the left and right sides are internally connected. The take-up auger 25 is laid horizontally via an auger support shaft 32 with the pivot axis facing the center. The scraping auger 25 scrapes the cereals harvested by a cutting blade device 22 described later into the platform 21 and feeds it horizontally into the front end opening (feeding port) of the feeder house 20.

  The cutting blade device 22 is formed in a clipper shape extending in the left-right direction, and is disposed in the lower portion of the front end of the platform 21 over the entire width of the front end. Then, the planted portion of the planted cereal is harvested.

  The pair of left and right dividers 23, 23 project forward from the left and right side walls of the platform 21, respectively, so that the planted cereals are divided into a cutting side and a non-cutting side as the aircraft moves forward. .

  The take-up reel 24 is disposed above the pair of left and right dividers 23, 23 so as to be able to rotate and rotate, and the harvested side planted culm divided by both dividers 23, 23 is rotated to the platform 21 side. I'm trying to scratch it.

  More specifically, the take-up reel 24 and the support structure thereof are described above. An arm support shaft 40 having an axis line in the left-right direction is horizontally mounted on the upper rear end of the platform 21. At the left and right end portions of the arm support shaft 40, the base end portions (rear end portions) of a pair of left and right support arms 41, 41 extending in the front-rear direction are pivoted. Then, a reel lift cylinder 42 is interposed between the middle part of each support arm 41 and the side wall of the platform 21 so that both the support arms 41 and 41 can be lifted around the arm support shaft 40.

  Between the front end portions (front end portions) of the both support arms 41, 41, a reel support shaft 43 (see FIG. 5) extending in the left-right direction is rotatably mounted around its axis, and the reel support shaft 43 is The position can be adjusted in the front-rear direction. A pair of left and right rotation supports 44, 44 are attached to the left and right end portions of the reel support shaft 43 so as to be opposed to the left and right, and the center portions thereof are attached. Both rotary supports 44, 44 are formed of a metal plate-like body in a regular pentagon shape, and are pipes extending in the left-right direction via tine bar pivots 45 between the left and right corners (tops). A (circular tube) tine bar 46 is laid horizontally so as to be rotatable about its axis. A plurality of tines 47 are attached to each tine bar 46 in a hanging manner with a certain interval in the left-right direction.

  In this way, when the reel support shaft 43 is rotated counterclockwise when viewed from the left side (for example, FIG. 3), the pair of left and right rotation supports 44, 44 attached to the reel support shaft 43 are also rotated counterclockwise. Then, the tine 47 attached via the tine bar 46 between the two rotation supports 44 and 44 moves around the outer periphery of the rotation support 44. At this time, the tine posture holding mechanism 51 holds at least the tine 47 acting on the planted cereals in a predetermined hanging posture among the rotating tines 47, and the tine 47 held in the hanging posture is planted. It works to stir into the cereals.

  The cutting unit 4 configured as described above divides the planted cereals that have been weeded by the pair of left and right dividers 23, 23, and scrapes the planted cereals on the side of the reaped that has been weeded by the take-up reel 24. At the same time, the stocked portion of the planted cereal that has been scraped is cut by the cutting blade device 22 and scraped into the platform 21. Then, the cereals scraped into the platform 21 are laterally fed into the front end opening portion (inlet portion) of the feeder house 20 by the rake auger 25, and further, the whole cereals are transported in the feeder house 20. The conveyor 27 carries in (throws in) the threshing unit 5 disposed in the rear machine body 3.

  In the above configuration, as shown in FIGS. 6 to 8, the power transmission structure of the combine 1 according to the present embodiment is configured as follows. That is, a transmission case 57 is interlocked and connected to the engine 11 mounted on the airframe 3, and the drive shaft 28 of the transport conveyor 27 is interlocked and connected to the vehicle speed tuning shaft 200 extended from the mission case. The cutting main shaft 61 is linked to the main shaft transmission mechanism 60 via the main shaft transmission mechanism 60, and the cutting main shaft 61 is connected to the scraping reel 24 via the reel transmission mechanism 62 and the auger transmission mechanism 63. The embedded auger 25 and the cutting blade device 22 via the cutting blade transmission mechanism 64 are connected to each other.

  Specifically, as shown in FIG. 7, on the right side of the feeder house 20, a cutting main shaft 61 extending in a straight line in the left-right direction is horizontally mounted on the rear wall (rear wall) 21 a of the platform 21. A main shaft transmission mechanism 60 is interposed between the left end portion of 61 and the right end portion 28a of the drive shaft 28 of the conveyer 27 protruding outward from the right side wall of the feeder house 20 to the right side. The main shaft transmission mechanism 60 is formed by winding a main shaft transmission chain 72 between a drive sprocket 70 attached to the right end 28 a of the drive shaft 28 and a driven sprocket 71 attached to the left end of the cutting main shaft 61. ing.

  Further, as shown in FIGS. 6 and 7, the right end 61a of the cutting main shaft 61 protrudes to the right side from the right wall 21b of the platform 21, and the right end 61a has a reel transmission mechanism 62 and an auger transmission. The base end portions of the mechanism 63 and the cutting blade transmission mechanism 64 are interlockedly connected.

  The reel transmission mechanism 62 attaches a reel drive sprocket 80 to the right end 61a of the cutting main shaft 61, and allows the driven sprocket 82 to rotate freely on the right end of the arm support shaft 40 on the same shaft core. The reel transmission chain 83 is wound between the two sprockets 80 and 82 (see FIG. 6). Reference numeral 84 denotes an urging and guiding body for urging the reel transmission chain 83 in the tension direction and guiding the rotation.

  A drive sprocket 85 is integrally attached to the driven sprocket 82 on the same axis, while a driven sprocket 86 is attached to the right end of the reel support shaft 43, and an interlocking chain 87 is wound between the two sprockets 85 and 86. The interlocking mechanism 52 is formed by turning.

  The auger transmission mechanism 63 has an auger drive sprocket 93 coaxially attached to the right end 61a of the cutting main shaft 61 adjacent to the left side of the reel drive sprocket 80, and protrudes outward from the right side wall 21b of the platform 21. An auger driven sprocket 94 is attached to the right end of the auger support shaft 32, and an auger transmission chain 95 is wound between the sprockets 93, 94. Here, the auger driven sprocket 94 is formed to have a diameter larger than that of the auger drive sprocket 93 so as to decelerate and rotate the take-in auger 25.

  The cutting blade transmission mechanism 64 is interposed between the right end portion 61 a of the cutting spindle 61 and the cutting blade 35 of the cutting blade device 22. That is, the proximal end portion of the rotation arm 101 extending in the front-rear direction is attached to the right end portion 61 a of the cutting main shaft 61, and the proximal end portion of the transmission rod 102 extending in the front-rear direction is attached to the distal end portion of the rotation arm 101 ( The rear end) is pivotally connected. The right end portion of the cutting blade 35 is connected to the distal end portion of the transmission rod 102 via the link mechanism 103. The link mechanism 103 rotates about the vertical axis line to link the back-and-forth reciprocating movement of the transmission rod 102 with the reciprocating sliding movement of the cutting blade 35 in the left-and-right direction.

  Next, power transmission from the engine 11 to the conveyor 27 and power transmission to the threshing unit 5 and the sorting unit 6 will be described with reference to the power transmission mechanism diagram shown in FIG.

  First, the output shaft 110 of the engine 11 is interlocked with the input shaft 112 via the first interlocking belt mechanism 111. The input shaft 112 is provided with a pair of hydraulic traveling pumps and a hydraulic traveling motor to form a traveling speed change member 73 that forms a hydraulic continuously variable transmission mechanism for traveling main transmission, and a pair of hydraulic swing pump and hydraulic swing motor. And a revolving member 74 forming a hydraulic continuously variable transmission mechanism for revolving.

  The traveling speed change member 73 and the turning member 74 are further linked to the transmission case 57, and can drive the drive wheels 54 via a gear group (not shown) disposed in the transmission case 57. Yes. In FIG. 8, reference numeral 76 denotes a vehicle speed sensor for detecting the vehicle speed of the airframe.

  Further, the transmission case 57 is rotated in synchronization with the rotation of the drive wheel 54, in other words, the vehicle speed tuning shaft 200 that rotates in synchronization with the vehicle speed is extended. The vehicle speed tuning shaft 200 is connected to a gear group in the mission case 57 via a one-way clutch (not shown) that transmits only a rotational force in a predetermined direction, and only when the vehicle body 3 is moving forward. The power is transmitted in synchronization with the speed.

  Further, the vehicle speed tuning shaft 200 is linked to the tuning switching shaft 205 via the second belt mechanism 201. Further, the second belt mechanism 201 is provided with a reaping clutch 202 so that transmission of power from the vehicle speed tuning shaft 200 to the tuning switching shaft 205 can be interrupted.

  The reaping clutch 202 is provided with a reaping clutch solenoid 203. The energization control of the reaping clutch solenoid 203 is performed by a work controller 230 described later, whereby the reaping clutch 202 is connected and disconnected. More specifically, when the energization is performed to the reaping clutch solenoid 203, the reaping clutch 202 is connected, and when the supply of power to the reaping clutch solenoid 203 is interrupted, the reaping clutch 202 is disconnected. .

  The tuning switching shaft 205 is linked to the drive shaft 28 via the third belt mechanism 204. As described above, the drive shaft 28 is linked to the cutting main shaft 61 via the main shaft transmission mechanism 60, and the cutting clutch 202 is operated to be in a connected state when the combine 1 is traveling, so that the cutting portion 4 moves to the vehicle speed. It is configured to operate in synchronization with That is, the cutting unit 4 is linked to the traveling units 2 and 2 so that the cutting speed of the cutting unit 4 and the traveling speed of the traveling units 2 and 2 are synchronized. The reaping clutch 202 constitutes a part of the reaping portion forcible driving means for forcibly driving the reaping portion 4 even when the traveling portions 2 and 2 are stopped or moved backward together with the work controller 230 described later. It is also a thing.

  Next, power transmission from the engine 11 to the threshing unit 5 and the sorting unit 6 will be described.

  An engine tuning shaft 211 is linked to the output shaft 110 of the engine 11 via a fourth interlocking belt mechanism 113, a first intermediate shaft 210, and a fifth interlocking belt mechanism 114. Reference numeral 117 shown in the middle of the fourth interlocking belt mechanism 113 is a threshing tension clutch.

  The engine tuning shaft 211 includes a handling cylinder support shaft 121 of the axial flow type handling cylinder 120 disposed in the threshing portion 5, a sixth interlocking belt mechanism 212, a second intermediate shaft 220, a bevel gear mechanism 221, and a third intermediate shaft. 222 and the seventh belt interlocking mechanism 213.

  In addition, the Kara 130, the first conveyor 131, the second conveyor 132, and the swing sorter 133 provided in the sorting unit 6 are respectively provided with a Kara support shaft 134, a first conveyor support shaft 135, and a second conveyor support shaft 136. The rocking action shaft 137 is arranged in parallel.

  A ninth belt mechanism 215 is provided between the engine tuning shaft 211 and the swinging action shaft 137, and a tenth belt mechanism 216 is provided between the swinging action shaft 137 and the second conveyor support shaft 136. An eleventh belt mechanism 217 is interposed between the second conveyor support shaft 136 and the first conveyor support shaft 135.

  The eleventh belt mechanism 217 is provided with an intermediate pulley 219, and the fourth intermediate shaft 223 extended from the intermediate pulley 219 and the Karatsu support shaft 134 are interlocked and connected via the twelfth belt mechanism 218. I am letting.

  In this way, the driving force of the engine 11 is transmitted to the traveling unit 2, the mowing unit 4, the threshing unit 5 and the sorting unit 6, respectively, so that each operating unit is operated steadily.

  Further, as shown in FIGS. 8 and 9, the engine 11 is connected with a hydraulic pump 169 that generates hydraulic pressure for raising and lowering the above-described take-up reel 24, raising and lowering the platform 21, and raising and lowering the unloading auger 75. .

  As shown in FIG. 9, the hydraulic pump 169 includes a reel lifting cylinder 42 that lifts and lowers the above-described scraping reel 24, a lifting hydraulic cylinder 26 that lifts and lowers the cutting portion, and a carry-out auger cylinder that raises and lowers the carry-out auger 75. The hydraulic pressure is supplied to a hydraulic circuit for driving 176a and the like.

  In particular, the reel raising / lowering cylinder 42 is configured to operate by receiving supply of pressure oil generated by the hydraulic pump 169 via an oil passage 170 in the reel raising / lowering hydraulic circuit 171.

  A spring center type hydraulic switching valve device 165 is provided in the middle of the oil passage 170 in the reel lifting hydraulic circuit 171. The hydraulic switching valve device 165 includes a hydraulic switching valve 165a and a lowering hydraulic switching solenoid 165b. And a rising hydraulic pressure switching solenoid 165c.

  The lowering hydraulic pressure switching solenoid 165b and the raising hydraulic pressure switching solenoid 165c are electrically connected to a work controller 230, which will be described later, and the work controller 230 controls energization of these hydraulic pressure switching solenoids 165b and 165c. The hydraulic switching valve device 165 is switched so that the take-up reel 24 can be raised and lowered.

  Specifically, when the lowering hydraulic pressure switching solenoid 165b is excited by the control of the work controller 230, the take-up reel 24 is lowered, and when the raising hydraulic pressure switching solenoid 165c is excited, the take-up reel 24 is raised. When neither the lowering hydraulic pressure switching solenoid 165b or the raising hydraulic pressure switching solenoid 165c is energized, the hydraulic pressure switching valve 165a is in the neutral position and the vertical position of the take-up reel 24 is fixed. In FIG. 9, reference numeral 172 is a pilot check valve, reference numerals 173 and 174 are relief valves, reference numeral 175 is a cutting part lifting hydraulic circuit, reference numeral 176 is an auger lifting hydraulic circuit, and reference numeral 176a is a carry-out auger cylinder.

  Here, returning to the description of FIG. 8, in the power transmission mechanism described above, characteristically to the combine 1 according to the present embodiment, the tuning switching shaft 205 and the engine tuning shaft 211 are connected to the reaping portion forced drive clutch 224. It is connected via an engine tuning power transmission mechanism 225 having

  This reaping portion forced drive clutch 224 is provided with a reaping portion forced drive clutch solenoid 226 that is driven and controlled by the work controller 230, similar to the reaping clutch 202, and transmits power from the engine tuning shaft 211 to the tuning switching shaft 205. Can be cut off.

  Specifically, the energization control of the reaping portion forced drive clutch solenoid 226 is performed by a work controller 230 described later, whereby the reaping portion forced drive clutch 224 is disconnected. In other words, when the reaped portion forced drive clutch solenoid 226 is energized, the reaped portion forced drive clutch 224 enters the connected state, and the supply of electric power to the reaped portion forced drive clutch solenoid 226 is interrupted, so that the reaped portion The forced drive clutch 224 is disengaged. This reaping portion forced drive clutch 224 also constitutes a part of the reaping portion forced drive means together with the work controller 230 described later.

  Then, as will be described later with reference to the flow of FIG. 12, when the reaping portion forced drive clutch 224 is connected, the reaping clutch 202 is disconnected by the work controller 230. In this state, the cutting unit 4 is driven in synchronization with the vehicle speed. In the following description, such a clutch state is also simply referred to as “vehicle speed synchronization state”.

  Conversely, when the reaping clutch 202 is in the connected state, the reaping portion forced drive clutch 224 is disconnected by the work controller 230. In this state, the cutting unit 4 is driven in synchronization with the engine 11. In other words, the cutting unit 4 is driven regardless of the vehicle speed. In the following description, such a clutch state is also referred to as an “engine tuning state”.

  In other words, the combine 1 according to the present embodiment includes a reaping portion forcible driving means that can be switched from the vehicle speed synchronization state to the engine synchronization state, so that even if the reaping portion 4 stops at the farm field end, The cutting unit 4 can be driven at any timing of the person regardless of the vehicle speed.

  Therefore, it is possible to prevent the grain culm stored in the platform 21 from falling off the platform 21 due to recoil reaction or inertia.

  The reaping portion forcible driving means is operated by an operator operating a predetermined operating body at an arbitrary timing when the body 3 is stopped or retreated. In particular, in this embodiment, when the operator depresses the stepping type pedal provided in the driving unit 8, the cutting clutch 202 is disconnected and the cutting unit forcible drive clutch 224 is connected, so that the cutting unit 4 moves the vehicle speed. It is configured to drive independently of the drive.

  This is for the purpose of facilitating the operation of the reaping portion forcible driving means during the turning operation of the airframe described above with reference to FIG. That is, even when the left and right hands are blocked by holding the accelerator lever 166 with the left hand and holding the cutting unit lifting / lowering operation lever 17 with the right hand for operations such as forward and backward movement and turning, the operator It is possible to easily operate the cutting unit forcible driving means by the foot.

  Further, as the cutting part forcible driving means is driven, that is, the vehicle is synchronized from the vehicle speed synchronization state to the engine synchronization state, the lowering operation of the scraping reel 24 is linked to improve the scraping ability of the cereal after cutting. At the same time, it is possible to prevent spillage of cereals as much as possible.

  Hereinafter, the configuration of the main part of the combine 1 according to the above-described embodiment will be described more specifically.

  As shown in FIG. 10, a driver's seat 13 is provided in the driving unit 8 provided on the right side behind the cutting unit 4 of the airframe 3.

  A side column 33 is provided on the left side of the driver's seat 13 and a front operation column 34 is provided on the front side. The main transmission lever 15 is provided in the front half of the side column 33 and the auxiliary transmission lever 16 is provided outward. In the latter half of the side column 33, a threshing clutch lever 36 is disposed on the inner side, and a cutting clutch lever 37 is disposed on the outer side.

  Further, the cutting clutch lever 37 is provided with a cutting clutch lever state detection switch 37a for detecting the operation state of the lever. The reaping clutch lever state detection switch 37a is turned on when the reaping clutch lever 37 is operated in a state where the reaping clutch 202 is connected, and is operated when the reaping clutch 202 is operated in a disconnected state. Is a switch that is turned off.

  The front front operation column 34 is provided with a mowing unit lifting operation lever 17 in the center, a reel lifting lever 18 on the right side, and an accelerator lever 166 on the left side in parallel. The reaping part raising / lowering operation lever 17 also has a role of a turning operation lever for changing the direction of the machine body, and when the reaping part 4 is tilted in the front-rear direction, the reaping part 4 is lifted and lowered in the left-right direction. By doing so, the turning motion of the airframe 3 is performed.

  Further, at the foot position of the operator sitting on the driver's seat 13, a reaping portion forced drive pedal 19 is disposed as an operating body for operating the reaping portion forced drive means.

  This reaping portion forced drive pedal 19 is provided with a pedal depression pressure detection switch 19a for detecting a depression pressure operation by an operator. When the operator depresses the reaping portion forcible drive pedal 19, the switch is turned on. It is a switch that is turned off when no pressure is applied.

  The pedal depression pressure detection switch 19a, the cutting clutch lever state detection switch 37a, and the vehicle speed sensor 76 are electrically connected to a work controller 230 provided at a predetermined position of the machine body 3, as shown in FIG. ing.

  Further, the work controller 230 includes a hydraulic switching solenoid 165b for moving up and down the take-up reel 24 disposed in the reel lifting hydraulic circuit 171; a cutting clutch solenoid 203 for connecting and disconnecting the cutting clutch 202; and a cutting unit. A reaping portion forced drive clutch solenoid 226 that connects and disconnects the forced drive clutch 224 is connected. The work controller 230 plays a role of controlling the entire machine, and many other devices such as the cutting unit lifting / lowering operation lever 17 and the reel lifting / lowering lever 18 are also connected. The description is omitted for the sake of simplicity.

  Furthermore, the work controller 230 includes a CPU, a ROM, a RAM, and the like. The CPU operates the solenoids according to the signals input from the levers and switches described above in accordance with a program stored in advance in a ROM or the like, and switches between the vehicle speed synchronization state and the engine synchronization state. Execute drive processing. As described above, the work controller 230 that executes the reaping portion forcible driving process functions as a part of the reaping portion forcible driving means.

  Further, the RAM functions as a temporary storage area, and stores variables and various flag values necessary for executing the program. As a flag stored in the RAM, for example, there is a pedal depression pressure flag that indicates whether or not the reaping portion forcible drive pedal 19 is depressed and whether or not the pedal operation is effective. The pedal depression pressure flag takes a value of “1” when the operator presses the reaping portion forced drive pedal 19 and takes a value of “0” when the depression is not depressed. Further, the mowing unit forcible drive pedal 19 takes a value of “0” even when the pedal is depressed, but the aircraft is not stopped or retracted and the pedal operation is not effective.

  Further, the RAM has a reaping portion forcible driving flag indicating whether or not the reaping portion is forcibly driven. This forcing part driving flag takes a value of “1” when the forcing part is forcibly driven, and takes a value of “0” for the forcible driving part.

  The reaping part forced drive process executed by the work controller 230 is executed as part of a process (hereinafter referred to as a main routine) that controls the entire machine body such as the machine control of the combine 1 and the operator's operation response. Here, the mowing unit forced drive process will be specifically described, and description of other various processes in the main routine will be omitted.

  As shown in FIG. 12, in the mowing part forcible drive process, it is first determined whether or not the pedal depression pressure detection switch 19a is ON (step S10). If it is determined that the pedal depression pressure detection switch 19a is ON (step S10: Yes), the CPU moves the process to step S11.

  In step S11, the CPU sets the value of the pedal depression pressure flag assigned to the predetermined address in the RAM to “1”, and moves the process to step S12.

  In step S <b> 12, the CPU determines whether or not the traveling units 2 and 2 are stopped or reverse based on a signal transmitted from the vehicle speed sensor 76. When it is determined that the traveling units 2 and 2 are stopped or retreating (step S12: Yes), the CPU moves the process to step S14. On the other hand, when it is determined that the traveling units 2 and 2 are not stopped or reverse (step S12: No), the CPU moves the process to step S13.

  In step S <b> 13, the CPU determines whether or not the value of the reaping portion forced drive flag assigned to the predetermined address in the RAM is “1”. If it is determined that the value of the mowing part forced drive flag is “1” (step S13: Yes), the CPU moves the process to step S14. On the other hand, when it is determined that the value of the forcing part forcibly driving flag is not “1” (step S13: No), the CPU moves the process to step S25, assuming that the operation is not an effective forcing part for forcing part 19 Then, the value of the pedal depression pressure flag assigned to the predetermined address in the RAM is set to “0”, and the process returns to the main routine.

  In step S14, the CPU determines whether or not the cutting clutch lever state detection switch 37a is ON. If it is determined that the cutting clutch lever state detection switch 37a is ON (step S14: Yes), the CPU moves the process to step S15, turns off the cutting clutch solenoid 203 to turn off the cutting clutch 202, and synchronizes the vehicle speed. The transmission of power from the shaft 200 to the tuning switching shaft 205 is interrupted, and the process proceeds to step S16. On the other hand, if it is determined in step S14 that the cutting clutch lever state detection switch 37a is not ON (step S14: No), the CPU moves the process to step S16.

  In step S <b> 16, the CPU sets the reaping portion forced drive clutch solenoid 226 to ON to place the reaping portion forced drive clutch 224 in the connected state, and transmits power from the engine tuning shaft 211 to the tuning switching shaft 205.

  That is, when the step S16 is executed by the work controller 230, the reaping portion forcible drive means is activated, and the vehicle speed synchronization state is switched to the engine synchronization state. When step S16 is completed, the CPU moves the process to step S17.

  In step S17, the CPU turns on the lowering hydraulic pressure switching solenoid 165b, switches the reel lifting hydraulic circuit 171 to the lowering state, and lowers the take-up reel 24. In other words, the lowering of the scraping reel is interlocked with the operation of the cutting unit forcible driving means. When this step S17 is completed, the CPU sets the value of the mowing unit forced drive flag to “1” (step S18), and returns the process to the main routine.

  On the other hand, when it is determined in step S10 that the pedal depression pressure detection switch 19a is not ON (step S10: No), the CPU moves the process to step S19.

  In step S19, the CPU determines whether or not the value of the pedal depression pressure flag is “1”. If it is determined that the value of the pedal depression pressure flag is not “1” (step S19: No), the CPU returns the process to the main routine. On the other hand, when determining that the value of the pedal depression pressure flag is “1” (step S19: Yes), the CPU moves the process to step S20.

  In step S20, the CPU determines whether or not the cutting clutch lever state detection switch 37a is ON. If it is determined that the cutting clutch lever state detection switch 37a is ON (step S20: Yes), the CPU moves the process to step S21, turns on the cutting clutch solenoid 203, connects the cutting clutch 202, and sets the vehicle speed. Power is transmitted from the tuning shaft 200 to the tuning switching shaft 205, and the process proceeds to step S22. On the other hand, if it is determined in step S20 that the cutting clutch lever state detection switch 37a is not ON (step S20: No), the CPU moves the process to step S22.

  In step S22, the CPU turns off the cutting unit forced drive clutch solenoid 226 to turn off the cutting unit forced drive clutch 224, cuts off the power from the engine tuning shaft 211 to the tuning switching shaft 205, and moves the process to step S23. .

  In step S23, the CPU turns OFF the lowering hydraulic pressure switching solenoid 165b, switches the hydraulic pressure switching valve 165a of the reel lifting hydraulic circuit 171 to the neutral state, and moves the process to step S24.

  In step S24, the CPU sets the value of the mowing unit forced drive flag to “0”, and moves the process to step S25.

  In step S25, the CPU sets the value of the pedal depression pressure flag to “0”, and returns the process to the main routine.

  Thus, the combine 1 which concerns on this embodiment connects the cutting part 4 ahead of the body 3 main body which has these structures, ie, the traveling parts 2 and 2, and became self-propelled, The body 3 main body In the combine 1 in which the cutting speed of the cutting unit 4 and the traveling speed of the traveling units 2 and 2 are synchronized, the traveling units 2 and 2 are stopped or moved backward. In this case, the cutting unit forcible driving means for forcibly driving the cutting unit 4 (for example, the work controller 230, the second belt mechanism 201, the cutting clutch 202, the engine tuning power transmission mechanism 225, the cutting unit forcible driving clutch 224). Therefore, when the airframe 3 is stopped or retracted, the cutting unit 4 is driven at any timing of the operator regardless of the vehicle speed, while the cutting unit 4 is driven in synchronization with the vehicle speed. Can be Yes.

[Modification]
Next, a modification of the combine 1 according to the present embodiment will be described with reference to FIG. In the above-described combine 1, the switching between the mowing clutch 202 and the mowing portion forced drive clutch 224 is electrically performed via the work controller 230 using the ON operation of the pedal depression pressure detection switch 19a as a trigger. Then, the structure is different in that it is configured to transmit the depression pressure of the mowing unit forced drive pedal 19 by a mechanical configuration such as a wire or a link mechanism and to switch between the mowing clutch 202 and the mowing unit forced driving clutch 224. I'm.

  This modification will be specifically described. As shown in FIG. 13, the second belt mechanism 201 includes a reaping clutch composed of two tension clutches, a first tension clutch 240 and a second tension clutch 241. In addition, the engine tuning power transmission mechanism 225 is provided with a third tension clutch 242 that functions as a reaping portion forced drive clutch, and the operation of the reaping clutch lever 37 is performed via the first wire mechanism 250. It is configured to be transmitted to the 1-tension clutch 240, and the depression pressure operation of the reaping portion forced drive pedal 19 is applied to the second tension clutch 241 and the third tension clutch 242 via the second wire mechanism 251 and the third wire mechanism 252, respectively. It is configured to be transmitted.

  The second belt mechanism 201 is configured by a vehicle speed tuning system transmission belt 201a wound around a pulley 200a disposed on the vehicle speed tuning shaft 200 and a pulley 205a disposed on the tuning switching shaft 205. The first tension clutch 240 and the second tension clutch 241 in this modified example connect and disconnect the power transmitted from the vehicle speed tuning shaft 200 to the tuning switching shaft 205 by loosening the vehicle speed tuning transmission belt 201a. I am going to do that.

  Further, the first tension clutch 240 is biased in a direction in which no tension is applied to the vehicle speed tuning transmission belt 201a when an operation by the first wire mechanism 250 described later is not performed, that is, in a free state. Yes.

  Further, the second tension clutch 241 is biased in a direction in which tension is applied to the vehicle speed tuning transmission belt 201a when the second tension clutch 241 is in a free state in which an operation by the second wire mechanism 251 described later is not performed.

  In addition, the second belt mechanism 201 does not transmit power only when either the first tension clutch 240 or the second tension clutch 241 applies tension to the vehicle speed tuning transmission belt 201a. When tension is applied by both the second tension clutch 241 and the pulleys 200a and 205a and the vehicle speed tuning transmission belt 201a, the friction is sufficient and power is transmitted.

  The first wire mechanism 250 includes a so-called sliding wire 250a composed of a tubular outer wire and an inner wire inserted through the outer wire. As shown in FIG. By displacing 37 from the horizontal position indicated by the broken line to the inclined position indicated by the solid line, the first tension clutch 240 at the separation position indicated by the broken line can be displaced against the biasing force to the adjacent position indicated by the solid line. Yes.

  Similarly to the first wire mechanism 250, the second wire mechanism 251 is also provided with a sliding wire 251a, and one end side of the second wire mechanism 251 is a swing lever of the link mechanism 253 disposed below the reaping portion forced drive pedal 19. 253a.

  The link mechanism 253 is provided as a mechanism for converting the stepping pressure operation of the reaping portion forcible drive pedal 19 into the pulling operation of the sliding wire 251a. When the rod 253c is lowered, the swing rod 253a that is swingably connected to the lower end of the pedal rod 253c is displaced from the state indicated by the solid line to the state indicated by the broken line around the swing support shaft 253b. The sliding wire 251a is pulled. The pedal rod 253c is urged upward by an elastic body (not shown), and is configured to return to the position indicated by the solid line when the operator removes his / her foot from the cutting unit forcible drive pedal 19.

  The other end side of the sliding wire 251a of the second wire mechanism 251 is connected to the second tension clutch 241. When the sliding wire 251a is pulled by the stepping pressure of the cutting portion forcible driving pedal 19, the solid line The second tension clutch 241 in the proximity position indicated by is displaced against the biasing force at the separation position indicated by the broken line.

  The engine tuning power transmission mechanism 225 is configured by winding a forced drive system transmission belt 225a between a pulley 211a disposed on the engine tuning shaft 211 and a pulley 205b disposed on the tuning switching shaft 205. The third tension clutch 242 tightens and loosens the forcible drive system transmission belt 225a to disconnect power transmitted from the engine tuning shaft 211 to the tuning switching shaft 205.

  The third tension clutch 242 is biased in a direction that does not apply tension to the forced drive system transmission belt 225a when the third tension clutch 242 is in a free state in which an operation by a third wire mechanism 252 described later is not performed.

  Similarly to the first wire mechanism 250 and the second wire mechanism 251, the third wire mechanism 252 also includes a sliding wire 252 a, and one end side of the third wire mechanism 252 is disposed below the reaping portion forcible drive pedal 19. The swing mechanism 253a of the link mechanism 253 is connected.

  Further, the other end side of the sliding wire 252a is connected to the third tension clutch 242, and when the sliding wire 252a is pulled by depressing the mowing part forcible drive pedal 19, the separation position indicated by a broken line is shown. The third tension clutch 242 is displaced against the urging force in the proximity position indicated by the solid line.

  According to such a clutch mechanism according to this modification, the second tension clutch 241, the second wire mechanism 251, the third tension clutch 242, the third wire mechanism 252, the link mechanism 253, and the like are the cutting unit forcible drive means. As a result, the following operation is performed.

  That is, as shown by a solid line in FIG. 13, when the cutting clutch lever 37 is in the inclined position and the aircraft body 3 is advanced toward the grain culm planted in the field without pressing the cutting unit forcible drive pedal 19, The unit 4 is driven in synchronism with the vehicle speed, and performs the operation of scraping the cereal.

  If the aircraft is stopped or retreated in this state, the cutting unit 4 is also stopped. However, when the operator depresses the cutting unit forcible drive pedal 19, the second tension clutch 241 is moved from the close state indicated by the solid line. Displacement into the separated state indicated by the broken line stops the transmission of the driving force from the vehicle speed tuning shaft 200 to the tuning switching shaft 205.

  In the engine tuning power transmission mechanism 225, the second tension clutch 241 is displaced from the separated state indicated by the solid line to the close state indicated by the broken line, and transmission of the driving force from the engine tuning shaft 211 to the tuning switching shaft 205 is started. The

  As described above, even in the configuration according to this modification, even when the traveling units 2 and 2 are stopped or retreated, the power of the engine tuning shaft 211 is transmitted to the tuning switching shaft 205 to force the cutting unit 4. Can be driven automatically.

  In addition, a pedal depression pressure detection switch 19a is arranged at a position where the pedal rod 253c is abutted when the pedal rod 253c is displaced from the position indicated by the solid line to the position indicated by the broken line, and the pedal depression pressure detection switch 19a is turned on. By configuring the lowering hydraulic pressure switching solenoid to be turned on by the operation, the lowering of the take-up reel 24 can be interlocked with the operation of the mowing unit forcible drive means.

  As described above, the combine 1 according to the present embodiment has the above-described configuration, that is, the cutting unit 4 is connected to the front of the main body 3 having the traveling units 2 and 2 and capable of self-propelling. 3 In the combine 1 in which the cutting unit 4 is linked to the traveling units 2 and 2 of the main body and the cutting speed of the cutting unit 4 and the traveling speed of the traveling units 2 and 2 are synchronized, the traveling units 2 and 2 are stopped or Even when the vehicle is moved backward, the cutting unit forcible driving means for forcibly driving the cutting unit 4 is provided. Therefore, the machine body 3 is stopped or moved backward while the cutting unit 4 is driven in synchronization with the vehicle speed. In this case, the cutting unit 4 can be driven at an arbitrary timing of the worker regardless of the vehicle speed.

  Finally, the description of each embodiment described above is an example of the present invention, and the present invention is not limited to the above-described embodiment. For this reason, it is a matter of course that various modifications can be made in accordance with the design and the like as long as they do not depart from the technical idea according to the present invention other than the embodiments described above.

  For example, in the combine 1 according to the present embodiment, the operating body that operates the mowing part forcible driving means is realized as a stepping-type pedal (the mowing part forcible driving pedal 19), but is not limited to this. It may be realized by a lever or a switch.

DESCRIPTION OF SYMBOLS 1 Combine 2 Driving | running | working part 3 Machine body 4 Cutting part 8 Driving | running part 19 Cutting part forced drive pedal 24 Stake reel 25 Stake auger 42 Reel raising / lowering cylinder 165b Lowering hydraulic pressure switching solenoid 171 Reel raising / lowering hydraulic circuit 201 Second belt mechanism 202 Cutting clutch 224 Forced drive clutch for reaping part 225 Engine synchronized power transmission mechanism 230 Work controller

Claims (2)

A cutting part is connected to the front of the machine body that has a traveling part and is capable of self-running, and a cutting part is linked to the traveling part of the body to synchronize the cutting speed of the cutting part and the traveling speed of the traveling part. In the combined combine
Even when the traveling unit is stopped or moved backward, a cutting unit forcible driving means for forcibly driving the cutting unit is provided ,
The reaping part is provided with a scraping reel that can scrape the cereals of the field by rotating operation so that it can be raised and lowered,
The combine characterized in that the lowering of the scraping reel is interlocked with the operation of the forcing part driving means .   2. The combine according to claim 1, wherein the operating body for operating the mowing unit forcible driving means is a step-down pedal.

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