JP2006177391A - Operating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operating device with an actuated object such as a transmission device assisted and actuated by an actuator in linkage with the operation of a manual lever, for operating the actuated object such as the transmission device actuated by the manual lever even if a trouble occurs in the actuator. <P>SOLUTION: The operating device uses an electric motor 201 which is driven in accordance with a detection value for the operation position of a shift lever, for actuating a trunnion shaft 121 of a HST 5 while transmitting the driving force of the electric motor to the trunnion shaft 121 via a turn supporting shaft 117, a rod 120, a trunnion arm 122, and a brake pad 205. When a trouble occurs in the electric motor 201, the shift lever 110 is operated without depending on the driving force to actuate the trunnion shaft 121 via the turn shaft 117 slidable on the side face of a large-diameter driven gear 203 directly connected to the rotating shaft of the electric motor 201, the rod 120 and the trunnion arm 122. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an operation device used for agricultural machines such as a riding rice transplanter and a riding tractor.

2. Description of the Related Art Agricultural working machines including a farming unit that performs farming such as planting seedlings behind a traveling device are known. The farm working machine operates the manual shift lever at a shift operation position such as a working speed for planting seedlings, a moving speed for traveling on the road, a PTO speed for operating only the farm working unit, etc. In this configuration, the shift control is performed and output to the drive wheels of the traveling device. Further, the farm work machine has a configuration in which an actuator is operated by operating a manual shift lever to shift the HST transmission.
JP 2003-276468 A

  In the agricultural machine described in Patent Document 1, an actuator is operated by a mechanical interlocking mechanism that is interlocked with a manual operation of the shift lever, and the shift device is shifted by the operation of the actuator. Good operability. However, if the actuator fails, the transmission cannot be operated.

  In view of the above, an object of the present invention is to provide an operating device having an operation target such as a transmission that operates with the assistance of an actuator interlocked with an operation of a manual lever. It is another object of the present invention to provide an operating device capable of operating an operation target such as the transmission with a manual lever.

The problems of the present invention are solved by the following means.
That is, a manual operation lever (transmission lever) 110, a lever operation position detection sensor (potentiometer) 126 that detects an operation position of the operation lever 110, and an actuator (based on a detection value of the lever operation position detection sensor 126) (Electric motor) 201, an operation target (the trunnion shaft 121 of HST5) that is operated by driving the actuator 201, and a coupling mechanism that transmits the driving force of the actuator 201 to the operation target (the trunnion shaft 121 of HST5). The set of the large-diameter driven gear 203, brake pad 205, rotation support shaft 117, rod 120, trunnion arm 122 of FIG. 5 or the ring gear 217, planetary gear 218, sun gear 219, planetary carrier 221 and trunnion arm gear 122a of FIG. , Tranio A combination mechanism (rotation support shaft 117, rod 120 in FIG. 5) that operates the operation target (trunion shaft 121 of HST5) by operating the manual operation lever 110 regardless of the driving force of the actuator 201). , A set of trunnion arms 122 or a planetary gear 218, a sun gear 219, a planetary carrier 221, a trunnion arm gear 122a, and a trunnion arm 122 in FIG.

  According to the present invention, the actuator (electric motor) 201 is actuated based on the detection result of the operation position sensor 126 of the speed change lever 110, and the object to be actuated (via the interlocking mechanism (117, 120, 122, 205)). Since the trunnion shaft 121) of the HST 5 is operated, the coupling mechanism (117, 120, 122) or the planetary gear 218, the sun gear 219, the planetary carrier 221, the trunnion arm gear 122a, the trunnion arm shown in FIG. The operation target (the trunnion shaft 121 of the HST 5) can be operated via the set 122).

An embodiment of the present invention will be described with reference to the drawings.
The side view of FIG. 1 and the plan view of FIG. 2 show the riding type rice transplanter of this embodiment, FIG. 3 shows a power transmission mechanism diagram for the front and rear wheels, and a development view of the traveling mission of FIG.

As shown in FIG. 1 and FIG. 2, the riding type rice transplanter 1 is provided with a seedling planting device 3 which is a kind of working device by a lifting link device 2 on a traveling vehicle. The riding type rice transplanter 1 is a four-wheel drive vehicle having a pair of left and right front wheels 6 and 6 and rear wheels 7 and 7 as drive wheels.
In the present specification, the left and right sides in the forward direction of the rice transplanter 1 are referred to as the left side and the right side, respectively, the forward direction is referred to as the front side, and the reverse direction is referred to as the rear side.

  As shown in FIG. 1, a mission case 11 and an engine 12 are arranged on the front and rear of a main frame 10 below the step floor 19, and a hydraulic pump 13 (FIG. 3) is integrated with the rear upper surface of the mission case 11. Further, a steering post 14 protrudes upward from the front portion of the transmission case 11.

  A steering handle 16 and a meter panel 17 are provided at the upper end of the steering post 14. A step floor 19 serving as a control floor is attached to the upper part of the airframe, and a cockpit seat 20 is installed above the engine 12.

  The front wheels 6, 6 are pivotally supported by front wheel support cases 22, 22 provided on the side of the mission case 11 so that the direction can be changed. The rear wheels 7 and 7 are pivotally supported by rear wheel support cases 24 and 24 that are integrally attached to the left and right ends of the rolling rod 23 (FIG. 3). The rolling rod 23 is supported by a rolling shaft 25 protruding from the rear end of the main frame 10 so as to be rotatable in a plane perpendicular to the traveling direction. Further, the left and right drawing markers 223 are provided at both right and left ends of the transmission case 162 of the seedling planting device 3 so as to be able to stand and fall.

  The working device 3 includes a seedling tank 163 that reciprocates left and right, a planting device 164 having a planting pot for cutting out seedlings of one stock and planting them in the soil, and a float 165 for leveling the seedling planting surface. 166 (center float 165 functions as a ground sensor).

  The raising and lowering of the seedling planting device 3 is performed by connecting the seedling planting device 3 via the lifting link device 2 provided on the rear side of the vehicle body 10, and is lifted and lowered by the expansion and contraction of the lifting cylinder 160 to rise to the non-working position. Or descend to the ground work position. Further, power transmission to the seedling planting device 3 is performed from the engine 12 via a PTO transmission shaft 167 (FIG. 1), and a PTO (planting) clutch (not shown) that turns on and off the transmission of the PTO transmission shaft 167. Z).

  The HST 5 is shifted by a shift lever 110 provided on the right side of the handle 16. When the speed change lever 110 is operated to the neutral position, the travel drive is stopped, and the speed change lever 110 is operated to the forward high speed state by operating the gear shift lever 110 to the front side. The forward / reverse speed can be increased or decreased according to the inclination angle of the lever 110.

  As shown in the power transmission mechanism diagram for the front and rear wheels 6 and 7 in FIG. 3, the rotational power of the engine 12 is transmitted to a counter shaft 32 that is a drive shaft of the hydraulic pump 13 via a belt 31. 32 is transmitted to the input shaft 35 of the hydraulic transmission HST5 via the belt 33, and transmitted from the output shaft 36 of the hydraulic transmission HST5 to the mission input shaft 34 via the belt.

  A main clutch 43 is provided on the mission input shaft 34, and the driving force of the hydraulic transmission HST 5 is transmitted to the mission input shaft 34 via the main clutch 43. The main clutch 43 is a well-known multi-plate clutch. As shown in the development diagram of the traveling mission in FIG. 4, the main clutch shaft side friction plate 44, the mission input shaft side friction plate 45, the spring 46 pressing both friction plates, It is composed of a fixing member 47 for switching operation, a sliding member 48 and the like.

  The mission input shaft 34, the counter shaft 50, the traveling primary shaft 51, the traveling secondary shaft 52, the planting primary shaft 53, and the planting secondary shaft 54 are supported in parallel on the front portion of the casing 40 of the mission case 11. ing. The gear G1 of the mission input shaft 34 and the gear G2 of the counter shaft 50, and the gear G2 and the gear G3 of the traveling primary shaft 51 are engaged with each other, and the rotation of the mission input shaft 34 is transmitted to the traveling primary shaft 51 in the forward direction. It is done.

As the main transmission device K, the gear G3 and the gear G4 are respectively fitted in fixed positions on the traveling primary shaft 51, and the gears G5 and G6 integrally formed with the traveling secondary shaft 52 are slidable in the axial direction. It is mated. When the gears G5 and G6 are moved by the shifter 56 and the gears G4 and G5 are engaged with each other, a low working speed is obtained, and when the gears G3 and G6 are engaged, a high road traveling speed is obtained.
Further, the planted primary shaft 53 is fitted with a gear G7 that always meshes with the gear G4. The position where the gears G5 and G6 do not mesh with any gear is neutral.

  As the inter-strain transmission C, gears G9 and G10 formed integrally with the planting primary shaft 53 are slidably fitted in the axial direction, and gears G11 and G12 are mounted on the planting secondary shaft 54. Are attached to each. By appropriately moving the gears G9 and G10 with the shifter 57, three combinations of the gear G9 and the gear G11, the gear G10 and the gear G11, and the gear G10 and the gear G12 are obtained, and the three-stage stock switching can be performed. It is transmitted from the planting secondary shaft 54 to the planting part transmission shaft 58 via the bevel gears G13 and G14.

  Rear axles 60, 60 and front axles 61, 61 are supported at the rear of the casing 40, and are transmitted from the traveling secondary shaft 52 to the rear axles 60, 60 via the rear differential device D and from the rear differential device D to the front differential. It is transmitted to the left and right front axles 61 and 61 via the device E. The left and right front wheels 6 and 6 are driven and rotated by the left and right front axles 61 and 61, respectively.

  The rear differential device D includes a container 63 in which a gear G16 meshing with the gear G15 of the traveling secondary shaft 52 is formed on the outer peripheral portion, a primary bevel gear G17 attached to a vertical axis 64 in the container, and left and right rear axles 60, 60. The secondary bevel gears G18 and G18 attached separately to each other are housed in a state where they mesh with each other, and the driving force transmitted to each axle is appropriately changed.

  The front differential device E has the same configuration as the rear differential device D, and is attached to the container 65, the vertical axis 66, the rear differential device side gear G19, the front differential device side gear G20, the bevel gear G21 attached to the vertical axis 66, and the front axle 61. Bevel gear G22. The rear differential device D and the front differential device E are provided with differential lock devices F and H that stop the differential function and allow the driving force to be transmitted to both axles 60 and 61 evenly. The differential lock device F (H) includes a claw 69 (70) formed on the container 63 (65) and a claw 73 (74) of a differential lock member 71 (72) fitted to a square bar portion of the axle 60 (61). The axle 60 (61) is fixed to each other. A differential lock lever 91 (FIG. 2) for operating the differential lock device F of the rear wheel 7 is provided on the meter panel 17.

The differential lock device H of the front wheel 6 is configured such that the differential function is also stopped by depressing the differential lock pedal 37 (FIG. 2) provided at step 19. The diff lock lever 91 and the diff lock pedal 37 are disposed at the front part of the fuselage on the front floor 19 portion of the cockpit 20 located between the cockpit 20 and the steering post 14. Both levers 91 are arranged on the left side of the aircraft.
When the foot is released from the diff lock pedal 37, the diff lock device H of the left and right front wheels 6, 6 becomes diff on, and the left and right front wheels 6, 6 are differentially operated.

  Accordingly, a brake pedal 140 and a differential lock pedal 37, which will be described later, are arranged on the front side of the cockpit seat 20 and on the right side and the left side of the floor 19 portion on the front side of the cockpit seat 20 located between the cockpit seat 20 and the steering post 14. Thus, an operator sitting in the cockpit 20 is configured to step on the left and right feet.

  For example, when getting out of the field by overcoming a fence on the field, the operator gets out of the body and stands in front of the body (on the front edge of the body to replace his body) Move forward or backward to safely move over the fence.

  At this time, when any of the left and right front wheels 6, 6 or either of the left and right rear wheels 7, 7 is idle, the pilot can immediately operate the diff lock lever 91 or the diff lock pedal 37 in the front of the aircraft in an easy posture. It is possible to safely go over the ridges in the differential lock state.

  The rear axles 60, 60 are connected to the side clutch shafts 76, 76 by bevel gears G23, G24,..., And are further transmitted from the side clutch shafts 76, 76 to the rear output shafts 77, 77 via the side clutches I, I. . The side clutch I is a multi-plate clutch and includes a friction plate 80 on the side clutch shaft side and a friction plate 81 on the rear output shaft side. The operating cylinder 82 slidably fitted to the rear output shaft 77 is urged in a direction to press both friction plates 80 and 81 by a leaf spring 83, and is always in a state in which the side clutch I is engaged. . When the operating cylinder 82 is moved in the direction opposite to the urging direction by the shifter 85I, the side clutch I is disengaged.

  Further, rear wheel brake devices J and J are provided on the rear output shafts 77 and 77. The rear wheel brake device J applies pressure to the discs 87,... Attached to the rear output shaft 77 for braking, and the pressure plates 88,. That is, the side clutch I is normally engaged and the rear wheel brake device J is not engaged, and the side clutch I is disengaged by operating the shifter 85I to move the operating cylinder 82 in the direction opposite to the urging direction. When the shifter 85J is operated, the rear wheel brake device J is applied. The operation of the rear wheel brake device J (operation of the left / right shifter 85J) is performed by a pedal 140 provided on step 19 described later. Note that the base portion of the left and right clutch operation arm 86I is fixed to the left and right shifter 85I, and the base portion of the left and right brake operation arm 86J is fixed to the left and right shifter 85J.

  The rear end portions of the rear output shafts 77 and 77 protrude out of the casing 40, and left and right rear wheel transmission shafts 89 and 89 that are transmitted to the rear wheel support cases 24 and 24 are connected to the protruding end portions. The left and right rear wheels 7 and 7 are driven and rotated by the left and right rear wheel transmission shafts 89 and 89, respectively.

  When the diff lock lever 91 is operated forward, the diff lock is operated, and when operated backward, the diff lock lever 91 is operated. Therefore, when seedling planting work is performed in the field, the diff lock lever 91 is set to the diff lock, the main transmission K is shifted to the working speed, the seedling is placed on the seedling mounting stage of the seedling planting device 3, and each part When the vehicle is driven forward, the differential lock device F for the left and right rear wheels 7 and 7 is in a state in which the differential lock is stopped and the differential function is stopped, so that the straightness of the machine body is good and a good seedling planting operation can be performed.

  In the case of traveling on the road, if both the rear differential device D and the front differential device E are operated in a state in which the differential function works, the vehicle can travel safely.

The seedling planting device 3 is mounted on the rice transplanter 1 so as to be movable up and down by the lifting and lowering link device 2. The lifting mechanism and the configuration of the seedling planting device 3 will be described.
First, the piston upper end of a general lift cylinder 160 (FIG. 1) whose base is rotatably provided in the rice transplanter 1 is connected to the lifting link device 2, and the hydraulic pump 13 (FIG. 3) Supplying / discharging pressure oil to / from the lift cylinder 160 via a lift valve (not shown) and extending / retracting the piston of the lift cylinder 160 to connect to the lift link device 2 The apparatus 3 is configured to be moved up and down.

  The seedling planting device 3 is supported by a planting transmission case 162 that also serves as a frame that is freely mounted on the rear part of the lifting link device 2 via a rolling shaft, and a support member provided in the planting transmission case 162. The seedling mounting table 163 that reciprocates in the left-right direction of the machine body and the seedling planting that is attached to the rear end portion of the planting transmission case 162 and that separates seedlings for one stock from the lower end of the seedling mounting table 163 and is planted in the field. And a center (sensor) float 165, a side float 166, etc., which are leveling bodies whose rear part is pivotally supported on the lower part of the planting transmission case 162 and whose front part is mounted so as to freely swing up and down. ing. The center float 165 and the side float 166 are provided so as to level the field and level the front of the field where the seedling planting tool 164 can plant seedlings.

FIG. 5 shows a schematic diagram of a mechanical linkage mechanism between the speed change lever 110 and the electric motor 201.
A base portion of the transmission lever 110 is fixed to the shaft 113, and a fan-shaped gear 114 is also fixed to the shaft 113. The tip of the rod 115 is slidably engaged with a long hole 114a provided in the fan-shaped portion of the fan-shaped gear 114. The other end of the rod 115 is pivotally locked to a plate material 118 fixed to one end of the pivot support shaft 117.

  Further, the other end of the rotation support shaft 117 is supported by penetrating through a central shaft hole 203 a of a large-diameter driven gear 203 that meshes with a drive gear 202 provided on the rotation shaft 201 a of the electric motor 201. An arm 119 is fixed to an intermediate portion of the rotation support shaft 117. One end of a rotatable rod 120 is connected to the end of the arm 119, and the other end of the rod 120 is connected to the end of a trunnion arm 122 that is directly connected to the trunnion shaft 121 of the HST5.

  A rotation support shaft 117 passes through the center of a brake pad 205 provided on both sides of the large-diameter driven gear 203, and a brake pad 205 is arranged on the opposite side of the brake pad 205 with the large-diameter driven gear 203 interposed therebetween. In addition, a washer 206, a winding spring 207, and a washer 206 are sequentially disposed on the outer side of the brake pad 205, and the central portions of these members 205 to 207 are disposed so as to penetrate the rotation support shaft 117. Therefore, the large-diameter driven gear 203 is tightly sandwiched between the two brake pads 205 and 205 by tightening with the bolt 208 from the outer side of the outer washer 206, so that the rotational drive of the electric motor 201 is transmitted to the large-diameter driven gear 203. The rotation of the large-diameter driven gear 203 is transmitted to the trunnion arm 122 via the rotation support shaft 117 and the rod 120.

  Note that the rotation angles of the fan-shaped gear 114 and the trunnion arm 122 are measured by operation position sensors 126 and 127 each composed of a potentiometer.

  In the above configuration, the large-diameter driven gear 203 is also rotated through the gear 202 by forward and reverse rotation of the electric motor 201, and the rotation support shaft 117 is also rotated by the rotation of the large-diameter driven gear 203. 115, a force that swings the speed change lever 110 via the fan-shaped gear 114 and the shaft 113 works, and the rotation of the rotation support shaft 117 causes the arm 119 to rotate, and the trunnion arm 122 moves the trunnion shaft 121 through the rod 120. Rotate around the center to operate the trunnion shaft 121 of HST5.

  Therefore, since the rotation of the electric motor 201 supports the operation of the speed change lever 110, the operation of the speed change lever 110 is lightened. Also, if the electric motor 201 fails, the large-diameter driven gear 203 becomes non-rotatable. However, since there are brake pads 205, 205 on both sides of the large-diameter driven gear 203, this movement occurs when the speed change lever 110 is operated. The rotation support shaft 117 interlocking with the rotation of the center shaft hole 203a of the large-diameter driven gear 203 is rotated via the brake pads 205, 205. As a result, the shift lever 110 can be operated, and therefore the HST trunnion shaft 121 can be rotated.

In the above configuration, the electric motor 201 is operated based on the detection result of the operation position sensor 126 of the shift lever 110 and the trunnion shaft 121 of the HST 5 is operated via the interlocking mechanism. Because the brake pads 205 and 205 slide between the rotation support shaft 117 and the large-diameter driven gear 203 without operating the interlocking mechanism of the interlocking mechanism with the electric motor, the shift lever 110 is operated. Can do.
Thus, even if the electric motor 201 fails in the power assist HST5, the shift lever 110 can be manually operated immediately.

  Further, in the power assist HST5, when the shift lever 110 is manually operated, the HST5 is shifted without the assistance of the electric motor 201 when the shift stage is at the on-road travel position.

  This is to prevent the operator from being surprised if the HST 5 moves too early with the assistance of the electric motor 201 when traveling on the road.

  Further, as shown in the main part perspective view of FIG. 6 and the main part plan view of FIG. 7, the forward cable 198 and the reverse cable 199 are connected between the engine 12 and the trunnion arm 122 of the HST 5, and the shift lever When the configuration in which the engine speed can be changed by the operation of 110 is adopted, the related parts of the accelerator petal 212 shown in FIG. 6 can be added to the junction of the forward cable 198 and the reverse cable 199.

  As described above, the connecting configuration of the joining portions of the cables 198 and 199 is simplified simply by disposing the engaging member 211 connected to the end of the rotating arm 213 of the accelerator petal 212 on the joining portion of the cables 198 and 199. Therefore, an inexpensive petal configuration can be obtained.

Moreover, the structure of power assist HST5 shown in FIG. 8 can also be used.
FIG. 8 shows a configuration in which the electric motor 201 is provided to the power assist of the HST speed change lever 110 via a planetary gear mechanism. As in the configuration described with reference to FIG. 5, the transmission lever 110 operates the electric motor 201 based on the detection result of the operation position sensor 126 of the transmission lever 110 to operate the trunnion shaft 121 of the HST 5 via the interlocking mechanism. A ring gear 217 is provided through a gear group that meshes with a gear 202 provided on the rotation shaft 201 a of the electric motor 201, and a planetary gear mechanism including a planetary gear 218, a sun gear 219, and a planetary carrier 221 is meshed with the ring gear 217. The planetary carrier 221 is configured to mesh with a gear 122 a provided on a trunnion arm 122 that rotates the trunnion shaft 121 of the HST 5. The gear 122 a rotates on the planetary carrier 221 while meshing to rotate the trunnion shaft 121. . Further, the HST lever 110 is provided with a power linking mechanism in which the planetary carrier 221 rotates in conjunction with the acceleration or deceleration operation of the lever 110. The electric motor 201 can change the rotation direction of the electric motor 201 in the forward / reverse direction in conjunction with the acceleration or deceleration operation of the HST lever 110.

  Therefore, when assisting the operation of the HST lever 110 by the electric motor 201, the ring gear 217 is rotated by the electric motor 201, and the trunnion arm 122 is operated via the planetary gear 218, the sun gear 219, and the planetary carrier 221. At this time, the HST lever 110 is also operated via the sun gear 219.

  With the above configuration, when the electric motor 201 assists the power, the electric motor 201 can adjust the rotation of the trunnion shaft 121 of the HST 5 by tilting the knob of the HST lever 110 back and forth.

  In addition, when the electric motor 201 is malfunctioning, the ring gear 217 is locked, but the planetary gear 218 is freely rotatable, so that the sun gear 219, the planetary gear 218, and the planetary carrier 221 are operated by operating the HST lever 110. The trunnion arm 122 is operated via

  Therefore, even when the electric motor 201 is malfunctioning, the HST lever 110 can be manually operated as it is. Conventionally, when the electric motor 201 is malfunctioning, the HST cannot be operated at all. However, in this embodiment, even when the electric motor 201 is malfunctioning, there is an advantage that the HST lever 110 can be manually operated without switching operation.

  In the power assist configuration by the electric motor 201 of the HST lever 110 shown in FIG. 8, FIG. 9 (FIG. 9A is a front view, FIG. 9B is a front view) provided on the knob portion 110a of the HST lever 110 during power assist. The electric motor 201 may be used to adjust the rotation of the trunnion shaft 121 of the HST 5 by means of an acceleration button 28 and a deceleration button 29 shown in a side view and FIG.

  A power assist configuration by the electric motor 201 of the HST lever 110 shown in FIG. 10 (FIG. 10A is a plan view and FIG. 10B is a side view) may be used. In this configuration, a fan-shaped trunnion gear 220 that meshes with a gear 202 fixed to a rotating shaft 201a of the electric motor 201 is provided, the rotation shaft of the trunnion gear 220 is coaxial with the trunnion shaft 121 of the HST5, and the trunnion shaft 121 The trunnion arm 122 integral with the trunnion gear 220 is arranged in parallel. Then, a long pin 224 is provided through the walls of the trunnion arm 122 and the trunnion gear 220, and a cable 222 provided at the tip of the long pin 224 is connected to the base of the HST lever 110 so as to be interlocked with the front / rear operation of the HST lever 110. The long pin 224 connecting the trunnion arm 122 and the trunnion gear 220 is pulled out so that the HST 5 returns to the neutral position.

With the above configuration, the operation of the HST lever 110 can be assisted by the electric motor 201. However, when the electric motor 201 is malfunctioning, the trunnion arm 122 is automatically released to the neutral position because the trunnion arm 122 is released from the trunnion gear 220. The trunnion gear 220 is also returned to the neutral position by the electric motor 201 at the same time.
Conventionally, when the electric motor 201 is malfunctioning, there is a possibility that the HST 5 cannot be stopped even if the shift lever 110 is returned. However, the above configuration improves the traveling safety.

  It should be noted that the HST lever 110 is operated by the electric motor 201 in each of the power assist embodiments. If the pulse width of the rotation speed control pulse of the electric motor 201 for HST assist is narrowed as the vehicle speed increases, the HST 5 cannot be accelerated rapidly. Therefore, especially when shifting to a moving speed, not only is it safe, but the shifting feeling is improved.

  The present invention can be applied to a working machine such as a riding rice transplanter.

It is a whole side view showing a riding type rice transplanter which is one example of the present invention. It is a whole top view of the riding type rice transplanter shown in FIG. It is a schematic plan view which shows the transmission structure of the riding type rice transplanter shown in FIG. It is an expanded view of the driving | running | working mission of the riding type rice transplanter shown in FIG. It is the schematic of the mechanical linkage mechanism of the transmission lever and electric motor of the riding type rice transplanter shown in FIG. It is a perspective view of the accelerator petal installation part to the forward cable and reverse cable of the riding type rice transplanter shown in FIG. It is a top view which shows the connection part of the forward cable of the riding type rice transplanter shown in FIG. 1, a reverse cable, and HST. It is a figure explaining the connection relation of the shift lever of another Example of the riding type rice transplanter shown in FIG. 1, an electric motor, and HST. It is a structural diagram of the grip of the speed change lever of the riding type rice transplanter shown in FIG. It is a figure explaining the connection relation of the shift lever of another Example of the riding type rice transplanter shown in FIG. 1, an electric motor, and HST.

Explanation of symbols

1 Riding type rice transplanter 2 Elevating link device 3 Seedling planting device 5 HST
6 Front wheel 7 Rear wheel 9 Sub-shift lever 10 Main frame 11 Mission case 12 Engine 13 Hydraulic pump 14 Steering post 16 Steering handle 17 Meter panel 19 Step floor 20 Pilot seat 22 Front wheel support case 23 Rolling rod 24 Rear wheel support case 25 Rolling shaft 28 Acceleration button 29 Deceleration button 31, 33 Belt 32 Counter shaft 34 Mission input shaft 35 Input shaft 36 Output shaft 37 Differential lock pedal 40 Casing 43 Main clutch 44, 45, 80, 81 Friction plate 46 Spring 47 Fixing member for switching operation 48 Sliding member 50 Counter shaft 51 Traveling primary shaft 52 Traveling secondary shaft 53 Planting primary shaft 54 Planting secondary shaft 56, 57 Shifter 58 Planting part transmission shaft 60 Rear axle 61 Front axle 63, 65 64, 66 Vertical axis 69, 70, 73, 74 Claw 71, 72 Differential lock member 76 Side clutch shaft 77 Output shaft 82 Actuating cylinder 83 Leaf spring 85I, 85J Shifter 86I Clutch operating arm 85J Brake operating arm 87 Disc 88 Pressure plate 89 Left and right Rear wheel transmission shaft 91 Differential lock lever 110 Shift lever 110a Knob portion 113 shaft 114 Fan gear 114a Slot 115 Rod 117 Rotation support shaft 118 Plate material 119 Arm 120 Rod 121 Trunnion shaft 122 Trunnion arm 122a Trunnion arm gear 126, 127 Operation position detection Sensor 140 Brake petal 160 Elevating cylinder 162 Transmission case 163 Seedling stand 164 Seedling planting tool 165 Center float 166 Side float 167 PTO transmission shaft 198 Previous Side cable 199 Reverse side cable 201 Electric motor 201a Rotating shaft 202 Drive gear 203 Large diameter driven gear 205 Brake pad 206 Washer 207 Winding spring 208 Bolt 211 Engagement member 212 Petal 213 Rotating arm 214, 215 Character-shaped arm 216 Support Member 217 Ring gear 218 Planetary gear 219 Sun gear 220 Trunnion gear 221 Planetary carrier 222 Cable 223 Drawing marker 224 Long pin

Claims (1)

A manual operation lever (110);
A lever operation position detection sensor (126) for detecting an operation position of the operation lever (110);
An actuator (201) driven based on a detection value of the lever operation position detection sensor (126);
An actuating object (121) actuated by driving of the actuator (201);
A connection mechanism (203, 205, 117, 120, 122 or 217, 218, 219, 221, 122a, 122) for transmitting the driving force of the actuator (201) to the operation object 121;
A coupling mechanism (117, 120, 122 or 218, 219, 221, 122a, 122) that operates the operation target (121) by operating the manual operation lever (110) without depending on the driving force of the actuator (201). An operating device provided.

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