Since the gear for the drive shaft and the gear for the distribution shaft, which are provided separately from the rear axle case and provided with the power take-off case, interlock the stationary rotor drive shaft separately, must be provided separately, , And the manufacturing cost can not be reduced.
Further, in the conventional structure, when the stationary rotor drive gear or the like is disposed in the rear axle case, the front end side and the rear end side of the stationary rotor drive shaft project from the front side and the rear side of the rear axle case, There is a problem that the sealing structure that closes the opening is complicated in the specification in which the stationary rotor drive shaft is opened to the front side and the rear side of the axle case. There is a problem that assembling work of the stationary rotor drive shaft becomes complicated by arranging the bearings on the front end side and the rear end side of the stationary rotor drive shaft from both the front and rear sides.
In addition, in the conventional structure, since the gear for the drive shaft and the gear for the distribution shaft, which are provided separately from the rear axle case and provided with the power take-off case, interlock the stop rotor drive shaft separately, There is a problem that it can not be done.
An object of the present invention is to solve the above problems and to provide a rice bran machine capable of disposing a stationary rotor drive structure for drawing power to a stationary rotor side at a low cost.
In order to attain the above object, in a first aspect of the present invention, a rice-burning machine includes a traveling vehicle on which an engine is mounted, a weft feeding device mounted on a rear side of the traveling vehicle through a lift link mechanism, A rear axle case for disposing the rear wheels, a stop rotor for leveling the surface of the food portion, and a distribution shaft for transmitting rear wheel driving power to the right and left axles, wherein the rear axle case includes an input shaft case portion , A left gear and a right gear, and a side clutch case part for installing the distribution shaft, the power transmission mechanism transmits a power to the stationary rotor via a stationary rotor drive shaft, A drive shaft case portion is formed in the axle case, Installation, and on the lower side the input shaft to a casing portion forming the drive shaft parts of the case 2 layer.
According to a second aspect of the present invention, in the rearing machine according to the first aspect, the rear axle case includes a rear-wheel drive input shaft for transmitting power from the engine to the rear axle case, Wherein a rear shaft hole for inserting the stationary rotor driving shaft is formed in the rear axle case, and a rear axle case is provided in the rear axle case from the rear axle case opened from the rear side of the rear axle case, So that the stationary rotor drive shaft can be pulled out to the rear side of the stationary rotor.
According to a third aspect of the present invention, in the rearing machine according to the first aspect of the invention, the rear axle case is provided with a rear-wheel driving input shaft through which power is transmitted from the engine to the rear- A distributing shaft is provided with a distribution shaft and a stationary rotor drive shaft for transmitting the power to the stationary rotor interlocked with the rear wheel travel input shaft and a gear for distributing shafts for interlocking the distribution shaft with the rear wheel drive input shaft inserted into the rear axle case A gear for a drive shaft for interlocking the stationary rotor drive shaft is formed in the gear for the distribution shaft.
According to a fourth aspect of the present invention, in the rearing machine according to the first aspect of the invention, the rear axle case is provided with a rear-wheel driving input shaft through which power is transmitted from the engine to the rear- A distribution shaft and a stationary rotor drive shaft for transmitting power to the stationary rotor in cooperation with the rear wheel drive input shaft, the distribution shaft is connected to the rear wheel drive input shaft through an input side bevel gear and an output side bevel gear, And the stationary rotor drive shaft is offset in a direction away from the output side bevel gear with the rear wheel drive input shaft interposed therebetween.
According to a fifth aspect of the present invention, in the rearing machine according to the third aspect of the invention, there is provided a structure including a stationary rotor clutch for turning on and off power transmission to the stationary rotor drive shaft, wherein the gear for the distribution shaft is formed by a bevel gear , The drive shaft gear is formed by a spur gear, the spur gear is formed to have a larger diameter than the bevel gear, a stop rotor drive shaft is arranged in parallel to the rear wheel drive input shaft, And the stationary rotor clutch is provided at the front side.
According to a sixth aspect of the present invention, in the rearing machine according to the fourth aspect of the invention, the drive shaft spur gear is integrally formed with the input side bevel gear of the rear wheel drive input shaft, And a stationary rotor drive shaft is connected.
According to a seventh aspect of the present invention, in the rearing machine according to the fourth aspect of the invention, the interlocking spur gear for connecting the stationary rotor drive shaft to the rear wheel drive input shaft on the stationary rotor drive shaft, A stationary rotor clutch for turning on and off power transmission to a drive shaft and a bearing for a stationary rotor drive shaft are arranged to constitute a stationary rotor drive unit and the stationary rotor drive unit is taken out from the rear side of the rear axle case To be installed.
(Effects of the Invention)
According to the invention as set forth in claim 1, there is provided a driving apparatus for a vehicle, comprising: a traveling vehicle on which an engine is mounted; a weft attaching device mounted on a rear side of the traveling vehicle via a lifting link mechanism; a rear axle case for arranging left and right rear wheels through right and left rear wheel axles; The rear axle case is provided with an input shaft case portion for installing a rear wheel drive input shaft. The input shaft case portion is provided with right and left axle shafts. The left and right axle shafts Wherein the drive shaft case portion is formed in the rear axle case, the drive shaft case portion is formed in the rear axle case, and the drive shaft case portion is formed in the rear axle case, The stationary rotor drive shaft is installed in the drive shaft case portion, Since the drive shaft case portion is formed in a two-layered structure on the side of the stationary rotor, the stationary rotor drive structure for drawing the power to the stationary rotor side can be arranged at a low cost. The drive shaft case portion can be formed long in the front-rear direction by utilizing the front-rear widths of the input shaft case portion and the side clutch case portion. That is, it is possible to sufficiently secure the length in the forward and backward directions necessary for housing the stationary rotor drive shaft, and to form the drive shaft case portion. The input shaft case portion and the drive shaft case portion are reinforced with each other by the two-layer structure of the input shaft case portion and the drive shaft case portion, thereby making it possible to reduce weight while maintaining rigidity.
According to the invention as set forth in claim 2, the rear axle case includes a rear-wheel drive input shaft for transmitting power from the engine and a stationary-rotor drive shaft for branching the power of the rear-wheel drive input shaft and transmitting the power to the stationary rotor Wherein a rear shaft hole for inserting the stationary rotor driving shaft is formed in the rear axle case and the rear axle case is provided on the rear side of the rear axle case from the rear shaft hole opened toward the rear side of the rear axle case, It is not necessary to provide a case for disposing a stationary rotor drive gear or the like separately from the rear axle case. The stationary rotor drive shaft can be easily installed in the rear axle case. The reverse shaft hole can be easily closed with the lid body when the stop rotor drive shaft is of an unnecessary specification. For example, even after shipment of a rice-growing machine, it can be easily changed to a specification not including the stationary rotor or a specification including the stationary rotor.
According to a third aspect of the present invention, the rear axle case includes a rear-wheel drive input shaft to which power from the engine is transmitted, a distribution shaft to transmit power to the right and left rear wheels in cooperation with the rear- And a gear for a distribution shaft is provided in the rear axle case so as to be interlocked with the rear axle driving input shaft that is pushed into the rear axle case, Since the drive shaft gear for linking the drive shaft is formed in the gear for the distribution shaft, the gear for the drive shaft and the gear for the distribution shaft can be configured at a low cost, and the gear for the drive shaft and the gear Can be assembled compactly.
According to a fourth aspect of the present invention, the rear axle case includes a rear-wheel drive input shaft through which power from the engine is transmitted, a distribution shaft that transmits power to the right and left rear wheels in cooperation with the rear- A rear wheel driving input shaft is connected to the distribution shaft via an input side bevel gear and an output side bevel gear, and the rear wheel driving input shaft is connected to the rear wheel driving input shaft And the stationary rotor driving shaft is offset in a direction away from the output side bevel gear. Therefore, the stationary rotor driving shaft can be supported at the position of the rear axle case corresponding to the input portion of the stationary rotor. The mounting width dimension in the vertical direction of the rear wheel traveling input shaft and the stationary rotor driving shaft can be compact. It is possible to assemble the stationary rotor drive shaft to the rear axle case without largely limiting the arrangement of the rear-wheel drive input shaft without projecting the rear axle case downward.
According to a fifth aspect of the present invention, there is provided a structure including a stationary rotor clutch for turning on / off power transmission to the stationary rotor drive shaft, wherein the gear for the distribution shaft is formed by a bevel gear, Wherein said spur gear is formed to have a larger diameter than said bevel gear so that a stationary rotor drive shaft is arranged in parallel on said rear wheel drive input shaft and said stationary rotor clutch is provided in front of a spur gear of a stationary rotor drive shaft The gear for the drive shaft and the gear for the distribution shaft can be easily processed by forging or the like, and the manufacturing cost can be reduced. The stop rotor clutch can be installed compactly in the front portion of the stop rotor drive shaft by extending the stop rotor drive shaft forward of the spur gear in the rear axle case.
According to a sixth aspect of the present invention, there is provided a vehicular automatic transmission as defined in the sixth aspect of the present invention, characterized in that: the drive shaft spur gear is integrally formed with the input side bevel gear of the rear wheel drive input shaft, and the stop rotor drive shaft is connected to the rear wheel drive input shaft through the drive shaft spur gear The rear wheel drive input shaft or the stationary rotor drive shaft can be inserted / removed in the axial direction by inserting / extracting the rear axle drive input shaft or the stationary rotor drive shaft in the axial direction. It is possible to improve the assembly disassembly workability of the rear wheel drive input unit including the rear wheel drive input shaft or the assembly disassembly workability of the stationary rotor drive unit including the stop rotor drive shaft.
According to a seventh aspect of the present invention, there is provided a continuously variable transmission according to the seventh aspect of the present invention, wherein: the interlocking spur gear connecting the stationary rotor drive shaft to the rear wheel drive input shaft is connected to the stationary rotor drive shaft; The stop rotor clutch and the bearing for the stop rotor drive shaft are disposed to constitute the stop rotor drive unit and the stop rotor drive unit can be taken out from the rear side of the rear axle case, The rotor driving shaft can be attached to and detached from the rear axle case by inserting and extracting the rotor driving shaft in the axial direction. The assembling and disassembling workability of the stationary rotor driving unit can be improved.
Hereinafter, a preferred embodiment of the present invention will be described with reference to Figs. 1 to 11. In the following description, the left side toward the advancing direction of the rearing unit (the traveling base 1) is simply called the left side, and the right side toward the advancing direction is simply called the right side. As shown in Figs. 1 and 2, the rice-growing machine has a traveling base 1 and a weighing unit 2 connected to the rear portion of the traveling base 1 so as to be able to ascend and descend. The traveling base 1 is provided with a pair of left and right front wheels 3, a pair of left and right rear wheels 4, a driver's seat 5 on which the driver is to ride, 6 and a bonnet 7 covering the lower end of the steering wheel 6 are provided.
A steering mechanism portion 8 for steering the front wheel 3 is disposed on the lower end side of the steering wheel 6 disposed at the center of the widthwise width of the running vehicle 1. [ In addition, left and right spare legs 9 for loading a plurality of mattress preliminary seedlings in multiple stages are provided in the traveling base 1 on the right and left sides of the bonnet 7. Behind the driver's seat (5), a fertilizer (10) for filling granular fertilizer is provided in the mud on the side of the seedlings drained on the surface of the ground.
1 to 3, a vehicle body frame 1 is provided with a vehicle body frame 12 and an engine 21. An engine 21 is attached to the vehicle body frame 12 below the driver's seat 5. [ A transmission case 22 for forming a hydraulic continuously variable transmission or a group of transmission gears is disposed in front of the engine 21. The engine 21 is disposed at a position across the front-rear direction centerline of the traveling base 1. [ That is, the engine 21 is disposed at the center of the width of the running vehicle 1.
As shown in Fig. 3, the engine 21 is arranged in a lateral direction posture in which the crankshaft 23 extends in the left-right direction. A pulley 24 is attached to the left end of the crankshaft 23 and the power of the engine 21 is transmitted to the transmission case 22 via the belt 25 wound on the pulley 24. [ An HST (hydrostatic constant speed transmission) 26 is attached to the left side of the rear portion of the transmission case 22. The power from the engine 21 is transmitted to the belt 25 via the pulley 27a to the input shaft 27 of the HST 26. [ The belt 25 is in contact with a tension pulley 28.
3 and 11, the rotational force of the PTO shaft 22a protruding rearward from the transmission case 22 is input to the cooking mission case 76. [ Power is transmitted through the PTO shaft 22a to the diaphragm 2a projecting rearward from the food-part transmission case 76 and the artificial driving shaft 77 projecting upward. The ratio of the running speed to the drive speed (rotation speed) of the take-off unit 2 can be changed in the food-part transmission case 76 and the number of rotations of the PTO shaft 22a and the output shaft And the specific driving shaft 92), it is possible to change the interval (daytime) between the front and rear adjacent to each other.
Right and left front axle cases 30 are attached to left and right sides of the front portion of the mission case 22. The left and right front wheels 3 are rotatably and steerably supported on the left and right front wheel axles 31 provided on the left and right front axle cases 30, respectively. The travel drive shaft 32 extends rearward from the transmission case 22. The driving force of the rear wheel 4 outputted from the transmission case 22 is transmitted to the inside of the rear axle case 33 through the driving drive shaft 32. [ The rear axle case (33) is provided with a rear wheel traveling input shaft (75) linked to the driving drive shaft (32).
The rear axle case 33 is disposed obliquely below the engine 21 on the rear side. The transmission case 22 and the rear axle case 33 are on the center axis of the traveling base 1 and integrally connected to the connecting frame 13 made of pipe. Rear wheel axle 34 is projected from the rear axle case 33 to the left and right. The left and right rear wheel axles 34 are pivotally supported by the left and right rear wheels 4 so as to be relatively non-rotatable. The rear axle case 33 is connected to the vehicle body frame 12 by two right and left rear supports 16. The rear strut 16 extends in the vertical direction in a slightly inclined posture with respect to the vertical line when viewed from the side.
The upper surface side of the engine 21, the mission case 22 and the like is covered with a vehicle body cover 37 on which the operator is to ride. The vehicle body cover 37 is a unitary structure, and a plurality of slits are formed so that the left and right front wheels 3 and the like can be seen with the naked eye. The driver's seat 5 is provided on the upper surface of the vehicle body cover 37. The driver's seat 5 is generally located at the substantially left and right central portions of the running vehicle 1 and further, As shown in Fig.
A brake pedal 38 is provided on the left side of the vehicle body 1 above the mission case 22 on the right side of the vehicle body 1, in other words, on the vehicle body cover 37 on the right side of the bonnet 7, And an accelerator pedal 39 is disposed on the right side. Around the bonnet 7 of the running vehicle 1 are provided various types of levers (a peripheral lever, an accelerator lever, a lifting / lowering lever 113, etc.), a switch . A front panel (not shown) on the bonnet 7 is provided with a meter, a display, and the like.
Side markers 71 are provided on the left and right sides of the weft insertion unit 2. The side marker 71 is provided with a marking body 72 for line drawing forming a trajectory of the next stroke on the gourmet side and a bar-shaped marker arm 73 which is rotatably supported on the tip side of the marker ring body 72 Respectively. The marker arm (73) is rotatably supported by the food substrate (50). The marking body 72 is configured to be able to move to a working posture in which the marking arm 73 is landed on the surface of the discussion and a storage posture in which the marking body 72 is raised to the ground by the rotation (relief operation) of the marker arm 73.
A fertilizer device (10) is arranged behind the driver's seat (5). The fertilizer unit (10) is provided with a hopper (40) for containing granular fertilizer. The granular fertilizer in the hopper 40 delivered in a fixed amount through the fertilizer feeding portion of the fertilizer device 10 is fed to the grain feeding device 2 through the flexible hose 42 by the blowing and conveying action of the blower 41 Lt; RTI ID = 0.0 > of the < / RTI >
The seedling feeding device 2 includes six feeding devices 45 driven by the power from the engine 21 input through the mission case 22, six seedling stands 46, And a float 47 for surface leveling of the surface provided on the lower surface of the transmission case 44.
As shown in Figs. 1 to 4, the tombstead stand 46 is installed in a posture inclined to the front and rear. The grain stand 46 is supported on the food frame 51 and the left and right side frames 52 of the food substrate 50 through the upper guide rail 48 and the lower rail 49 so as to be reciprocally movable left and right. The food base body 50 includes a generally elongated food frame 51 disposed on the lower front side of the toaster stand 46 and a pair of left and right side frames 52 provided from both left and right ends of the food frame 51, And a rotor lifting shaft 54 connecting the upper connecting frame 53 connecting upper ends of the left and right side frames 52 and the upper and lower middle portions of the left and right side frames 52. [ The upper connecting frame 53 is welded and fixed to the side frame 52 via an upper bracket 52a and the rotor elevating shaft 54 is rotatably mounted to the side frame 52 through an intermediate bracket 52c have.
As shown in Fig. 1, the hitch bracket 62 is connected through a rolling point shaft (not shown) at a center position of the width of the food frame 51. The hitch bracket 62 is connected to the rear side of the vehicle body frame 12 (the traveling base 1) through a lift link mechanism 65 including a top link 63 and a lower link 64. [ A hydraulic lifting cylinder 66 attached to the body frame 12 is connected to the lower link 64. When the elevating cylinder (66) is driven, the weighing unit (2) ascends and descends through the elevating link mechanism (65). Further, the grain feeding device 2 is rotated in the axial direction of the rolling point to change the tilt posture in the lateral direction.
Further, the feeding shaft 2a is projected from the transmission case 22 toward the rear side. A driving force from the diaphragm shaft 2a is transmitted to a food input shaft (not shown) projecting forward from a food input case (not shown) attached to the left and right center of the food frame 51 through the universal joint shaft 61 (See Fig. 1). The horizontal feeding operation of the weeding section 46 in the lateral direction by the driving force transmitted to the above-mentioned food-portion input shaft, the vertical feeding operation of the mat-like seedling on the weeding section 46, and the rotation driving of the cooking- .
The eating and conveying mechanism 45 is connected to the rear side cantilever on the rear portion of the food compartment frame 51 to support the rotary case 55. [ The eating-part transmission case 44 is attached to three portions in total of the left and right end portions and the central portion of the eating-part frame 51. Two rotary casings (55) are rotatably supported on the eating-material transmission case (44) to rotate at a uniform speed in one direction. A pair of type changeover cases 56 are disposed symmetrically about the rotational axis of the rotary case 55. And the cooking oven 57 is attached to each cooking oven case 56. That is, at the time of descending of the weighing unit 2, seedling for two weeks is drawn out from the weeding stand 46 which reciprocates right and left in two turns by one turn of the rotary case 55, A pair of seedlings are consecutively fed by the two food sticks 57 on the surface of the rice straw suspended by the rice straw 47, so that six seedling operations are continuously performed.
On the lower side of the food frame 51, a point shaft 67 for adjusting the depth of the food part extending in the left-right direction is rotatably attached. 5, a bracket 68 attached to the upper surface of each float 47 is connected to a point shaft 67 via an adjustment link 69. [ The depth of reference portion depth of the seedling is adjusted by operating the depth-of-field adjusting lever 67a for fixing the base end to the point shaft 67 (see FIG. 1). Further, a change in the inclination angle of the float 47 is detected by a lift link (not shown) connected to the float 47 at the center position, thereby enabling automatic control of the depth of the food portion.
A stop device (35) is provided in front of the grain feeding device (2). The stop device 35 includes a stop rotor 80 provided in front of the float 47, a rotor supporting vertical frame 130 supporting the stop rotor 80 to the food rack body 50, And a universal joint shaft 36 for transmitting the power of the stationary rotor drive unit 82 to the stop rotor 80. The stationary rotor drive unit 82 includes a stationary rotor drive unit 82,
The stop rotor 80 includes one rotor shaft 81 extending in the left and right direction, a plurality of rotor-shaped rotor pieces 83 disposed on the rotor shaft 81, A stationary rotor transmission case 84 disposed substantially at the center, and a rotor cover 140 covering the upper portion of the rotor piece 83. [ The power transmitted from the stationary rotor drive unit 82 through the universal joint shaft 36 is transmitted to the rotor shaft 81 to rotate the rotor shaft 81 and the rotor piece 83. That is, the discussion surface of the left and right width (the discussion surface of the food width of six tanks) of the mouldering unit 2 is configured to be even by the rotor piece 83.
The stopping rotor (80) is provided with a rotor lifting mechanism (141) for lifting and lowering the lifting and lowering device (2) in a non-interlocking manner. The rotor lifting mechanism 141 is lifted and lowered by the operation of a rotor lifting handle 133 which will be described later. The rotor lifting mechanism 141 has a rotor-supported vertical frame 130 on the pipe extending downward from the left and right side frames 52 of the food base 50. A rotor shaft 81 is rotatably connected to the lower end of the rotor supporting vertical frame 130.
The rotor supporting vertical frame 130 is connected to the side frame 52 via an upper link 131 and a lower link 132 forming a parallel link mechanism. A rotor lifting shaft 54 is rotatably attached to the side frame 52 through an intermediate bracket 52b. One end side of the upper link 131 is fixed to the rotor lifting shaft 54 and the other end side of the upper link 131 is rotatably connected to the rotor supporting vertical frame 130. One end side of the lower link 132 is pivotally connected to the lower end side of the side frame 52 through a lower bracket 52c and the other end side of the lower link 132 is pivotally connected to the rotor supporting vertical frame 130 Possibly connected.
A base end side of a rotor lifting handle 133 for lifting and lowering the stopping rotor 80 is welded and fixed at a position close to the right side side frame 52 of the rotor lifting shaft 54. And the operating portion of the rotor lifting handle 133 extends forward. The side frame 52 on the right side is provided with a position holding member 134 for engaging the middle of the rotor lift handle 133 so as to be detachable. The rotor lifting handle 133 is held at the operating position by the position holding member 134. [ A plurality of notches (not shown) are formed in the position holding member 134 to engage the rotor lifting handle 133 in a tearable manner.
With the above arrangement, when the operator grasps and rotates the rotor lifting handle 133 upward or downward, the upper link 131 rotates in the direction of the rotor lifting shaft 54. The stationary rotor 80 moves upward or downward in a substantially vertical direction by the parallel link operation through the rotor supporting vertical frame 130 connected to the upper link 131 in accordance with the rotation of the upper link 131. The stop rotor 80 moves to the raised position (non-working position) or the lowered position (landed position). The stopper rotor 80 is held at a predetermined height by engaging the rotor lifting handle 133 with the receiving portion of the position holding member 134. [ Since the stopper 80 is moved up and down in a non-interlocking manner with the moulder unit 2, even when the mover unit 2 is supported at the lowered position (landing position) To the raised position (non-working position).
The front end side of the wire connecting arm 138 projecting rearward is welded and fixed to the rotor lifting shaft 54. [ One end side of the clutch interlocking wire 136 is connected to the rear end side of the wire connecting arm 138 via a wire connecting piece 135. The other end side of the clutch interlocking wire 136 is connected to the rear end side of the clutch on-off arm 137 provided on the left and right outer sides of the left rear support 16. The clutch on-off arm 137 is rotatably supported on the rear support 16 at a central portion in the longitudinal direction extending in the front-rear direction.
The front end side of the clutch on-off arm 137 is connected to the driving clutch operation arm 106 of the rear axle case 33 via the connecting rod 139. [ When the stop rotor 80 moves to the raised position (non-working position) or the lowered position (landing position), the clutch on-off arm 137 is rotated via the clutch interlocking wire 136 in conjunction with the rotation The drive clutch operation arm 106 is rotated through the drive shaft 139 and the stationary rotor clutch 89 that turns on and off the power transmission to the stationary rotor 80 is turned on and off.
For example, when the operator rotates the rotor lifting handle 133 upward to move the stopping rotor 80 up to a predetermined height position, the stopping rotor clutch 89 is turned off via the clutch interlocking wire 136 It is configured to work. On the other hand, when the rotor lift handle 133 is rotated downward to move the stop rotor 80 down to a predetermined height position, the stop rotor clutch 89 is configured to be turned on via the clutch interlocking wire 136 have.
The rear axle case 33 is provided with a rear wheel drive input unit 90 including a rear wheel drive input shaft 75 and the like connected to the drive drive shaft 32 and a rear wheel drive input unit 90 connected to the left and right rear wheels 4 in cooperation with the rear wheel drive input shaft 75. [ A side clutch 93 disposed on left and right ends of the distribution shaft 91 and a stationary rotor drive shaft 85 interlocked with the rear wheel drive input shaft 75, A stationary rotor drive unit 82 is disposed. The stationary rotor drive shaft 85 is connected to the rotor shaft 81 of the stationary rotor 80 via the universal joint shaft 36. The rear axle 34 is disposed on both left and right sides of the rear axle case 33. The power of the distribution shaft 91 is transmitted to the rear wheel axle 34 The final gear mechanism 95 is provided.
A rear-wheel drive input shaft 75 extending in the front-rear direction is provided on the left side of the connecting frame 13 of the rear axle case 33. A distribution shaft 91 extending in the left-right direction is provided behind the rear-wheel drive input shaft 75. The distribution shaft 91 is supported by the rear axle case 33 via the distribution shaft bearings 91a and 91b. The stationary rotor drive shaft 85 extending in the front-rear direction is provided offset from the rear of the rear-wheel drive input shaft 75 to the left of the rear-wheel drive input shaft 75.
The rear axle case 33 is provided with an input shaft case portion 43a for installing a rear wheel drive input shaft 75, left and right final gear case portions 43b for mounting left and right axles, And a clutch case portion 43c is formed. A drive shaft case portion 43d is formed in the rear axle case 33 as a structure for transmitting power to the stationary rotor 80 through the stationary rotor drive shaft 85. [ A stop rotor drive shaft 85 is provided in the drive shaft case portion 43d and a drive shaft case portion 43d is formed in a two-layered structure below the input shaft shaft portion 43a.
A front side lateral shaft hole 33a is formed in the input shaft case portion 43a and is open to the front side wall 33c of the rear axle case 33. The rear side driving input unit 90 Are formed in the rear axle case 33 in a detachable manner. The rear wheel drive input unit 90 includes a rear wheel drive input shaft 75 projecting forward from the front side directional shaft hole 33a, front and rear input shaft bearings 96 and 97 supporting the rear wheel drive input shaft 75, And a transmission gear body 100 to be described later for transmitting power to the distribution shaft 91 and the stationary rotor drive shaft 85. [
And the electric motor gear body 100 is provided on the rear end side of the rear wheel drive input shaft 75. [ A bevel gear 100a for a distributing shaft and a spur gear 100b for a drive shaft are integrally formed in the electric motor gear body 100. [ An interlocking bevel gear 107 provided on a distribution shaft 91 is engaged with a bevel gear 100a for a distribution shaft. And an interlocking spur gear 88 provided on the stationary rotor drive shaft 85 is engaged with the drive shaft spur gear 100b. The bevel gear 100a for distribution shaft, the bevel gear 107 for interlocking, and the stationary rotor drive shaft 85 are accommodated in the side clutch case portion 43c.
That is, the bevel gear 100a for the distribution shaft and the spur gear 100b for the drive shaft are integrally formed as the electric gear body 100 by forging or the like. The rear wheel drive input shaft 75 is disposed within the rear axle case 33 in a dimension corresponding to the installation dimension of the drive shaft spur gear 100b (gear 100b (100b)) in the rear axle case 33 because the distributing shaft bevel gear 100a and the drive shaft spur gear 100b are integrally formed. (The thickness of the rear wheel drive input shaft 75), the electric motor gear body 100 can be provided on the rear wheel drive input shaft 75. [
Since the drive shaft spur gear 100b (the electric motor gear body 100) is disposed at the rear end side of the rear wheel drive input shaft 75, the middle of the stop rotor drive shaft 85 is connected to the rear end side of the rear wheel drive input shaft 75 . The stationary rotor drive shaft 85 can be disposed within the front and rear width of the rear axle case 33. [ In the power transmission gear assembly 100, the tooth bottom diameter of the drive shaft spur gear 100b is set to be equal to or larger than the tooth tip diameter of the bevel gear 100a for the distribution shaft.
The front and rear input shaft bearings 96 and 97 and the power transmission gear body 100 are disposed on the rear wheel drive input shaft 75 to constitute the rear wheel drive input unit 90. Therefore, The rear wheel drive input unit 90 can be inserted into the shaft hole 33a and the rear wheel drive input unit 90 can be mounted on the rear axle case 33. [
Since the rear wheel drive input shaft 75 is disposed at a position near the left side of the rear axle case 33 with respect to the gas center line in the front and rear direction, the bevel gear for the distribution shaft, which branches the power from the rear wheel drive input shaft 75 to the distribution shaft 91, (100a) and the interlocking bevel gear (107) are also disposed at positions near the left side of the distribution shaft (91). Left and right side clutches 92 are disposed on the left and right ends of the distribution shaft 91 and a camshaft 124 for the side clutch for on-off operation of the side clutch 92 is provided on the inner side of each side clutch 92 have.
As shown in Fig. 6, the side clutch 92 is of a multi-plate type, and is configured to be turned on when interlocking with the operation of the steering wheel 6 and reaching a predetermined steering angle or more. The steering wheel 6 includes a steering mechanism 8, an intermediate rod 112 extended forward and backward below the body frame 12, and a rotary arm (not shown) disposed below the rear axle case 33 via the longitudinal rod 112a. 120) (see Figs. 1 and 10). The intermediate rod 112 is pushed and pulled in the front-rear direction by the rotation operation of the steering handle 6 to rotate the rotary rocking arm 120 in the left-right direction.
6, the other end of the rotary rocking arm 120 is connected to an operation arm 122 disposed above the rear axle case 33 through a point shaft 121 extending vertically through the rear axle case 33, As shown in FIG. The rotary arm 120, the fulcrum shaft 121, and the operation arm 122 are integrally rotated. The right and left ends of the operation arm 122 are provided so as to be contactable with one end of a pair of left and right intermediate arms 123. The operation arm 122 is displaced to a position where it does not contact either the left or right intermediate arm 123 or to a position where it pushes the intermediate arm 123 of either the left or right intermediate arm 123 by the movement of the rod 112. [
The cam shaft 124 for the side clutch is provided so as to be rotatable integrally with the other end of the right and left intermediate arms 123 and the lower end of the cam shaft 124 for the side clutch extends downward to be connected to the rear axle case 33 ). The lower side cam side surface of the side clutch camshaft 124 is in contact with the inner side of the side clutch 92. The side clutch 92 is turned on and off by the rotation of the camshaft 124 for the side clutch.
The rod 112 is pushed or pulled by turning the steering wheel 6 at a predetermined steering angle or more so that the turning arm 120 and the branch shaft 120 121 to rotate the intermediate arm 123 corresponding to the side clutch 92 on the inner side of the turning. When the intermediate arm 123 is pressed, the camshaft 124 for the side clutch rotates to turn off the side clutch 92 on the inner side in the revolving direction. The turning radius is reduced by interrupting the transmission of power to the rear wheel 4 on the inner side of the turning in conjunction with the turning operation of the steering handle 6 at the time of the turning operation above the predetermined steering angle. The turning performance of the traveling base 1 is improved. In addition, when the steering wheel 6 is turned at a predetermined steering angle or less, it is possible to prevent the side clutch 92 on both the inside of the turn and the outside of the turn from being continuously maintained and running in a serious skew by the operation of the steering wheel 6 It is possible to improve the alignment control performance (straight running performance).
10, the stationary rotor drive shaft 85 is not disposed in the vertical direction below the rear wheel drive input shaft 75, but is provided offset relative to the rear wheel drive input shaft 75. As shown in Fig. The interference between the connecting portion of the rear wheel traveling input shaft 75 and the distributing shaft 91 and the connecting portion of the rear wheel traveling input shaft 75 and the stationary rotor driving shaft 85 in the rear axle case 33 is reduced . Even when the structure (stationary rotor drive unit 82) that divides the power from the rear wheel drive input shaft 75 to the stationary rotor drive shaft 85 is formed in the rear axle case, the increase in the vertical dimension of the rear axle case 33 Can be reduced.
The offset amount L of the stop rotor drive shaft 85 with respect to the rear wheel drive input shaft 75 is set such that the stop rotor drive shaft 85 and the rear wheel drive input shaft 75 overlap ). A structure in which the power is branched from the rear wheel traveling input shaft 75 to the stationary rotor drive shaft 85 in the rear axle case 33 without imposing restrictions on the arrangement of the side clutches 93 ) Can be formed.
A rear shaft hole 33a is opened in the rear side of the rear axle case 33 and a rear shaft hole 33a is formed in the rear side of the rear axle case 33 And is connected to the universal joint shaft 36. As shown in Fig. The stationary rotor drive unit 82 includes a stationary rotor drive shaft 85 and front and rear drive shaft bearings 86 and 87 for supporting the stationary rotor drive shaft 85 in the rear axle case 33, An interlocking spur gear 88 engaged with the drive shaft spur gear 100b of the drive shaft 75 and a stationary rotor clutch 89 for turning on and off the transmission of power from the rear wheel drive input shaft 75 to the stationary rotor drive shaft 85 .
As shown in Fig. 8, the drive shaft bearings 86 and 87 are disposed on the front end side and the rear end side of the stationary rotor drive shaft 88. As shown in Fig. The interlocking spur gear 88 is disposed in the middle of the stop rotor drive shaft 85. The stop rotor clutch 89 is disposed on the front end side of the stop rotor drive shaft 88.
7 and 8, the stationary rotor drive unit 82 includes drive shaft bearings 86 and 87, an interlocking spur gear 88, and a stationary rotor clutch 85 on the stationary rotor drive shaft 85, (89). The stationary rotor drive unit 82 is detachably mounted to the rear axle case 33 using a reverse shaft hole 33b for projecting the stationary rotor drive shaft 85 in the rearward direction. Since the stationary rotor drive unit 82 is provided in the rear axle case 33, a special case for accommodating the stationary rotor drive unit 82 as in the prior art becomes unnecessary. The number of constituent parts can be reduced, and the manufacturing cost can be reduced.
The front end side of the reverse shaft hole 33b is closed by the front side wall 33c of the drive shaft case portion 43d and the rear end of the reverse shaft hole 33b is stopped from the rear opening edge 33d of the rear shaft hole 33b as shown in FIGS. And the rear end side of the rotor drive shaft 85 protrudes in the rearward direction. The bearing for a drive shaft 86 is fitted in the inner periphery of the rear shaft hole 33b so as to be pulled out in the rear direction to the bearing fitting front portion 115 inside the front side wall 33c of the rear axle case 33. [ In the inner periphery of the rear shaft hole 33b, the bearing for the drive shaft 87 is fitted in the rear opening edge 33d of the rear axle case 33 so as to be pulled backward. Therefore, by inserting the stationary rotor drive unit 82 from the rear side of the rear axle case 33 into the rear opening of the rear shaft hole 33b so as to fit the drive shaft bearing 86 to the bearing fitting front portion 115 The fixed rotor drive unit 82 (a structural eutectic structure in which the power is branched from the rear wheel drive input shaft 75 to the stationary rotor drive shaft 85) is mounted on the drive shaft case portion 43d of the rear axle case 33. [
As shown in Figs. 7 and 8, the front-side lateral shaft hole 33a for supporting the rear-wheel drive input unit 90 is formed in the input shaft case portion 43a of the rear axle case 33. [ The reverse shaft hole 33b for supporting the stationary rotor drive unit 82 is formed in the drive shaft case portion 43d of the rear axle case 33. [ The front and rear width dimensions of the side clutch case portion 43c and the input shaft case portion 43a and the front and rear width dimensions of the drive shaft case portion 43d are substantially the same. A drive shaft case portion 43d is formed as a two-layered structure below the input shaft case portion 43a and the side clutch case portion 43c. That is, the stationary rotor drive shaft 85 is disposed below the rear wheel drive input shaft 75 and the distribution shaft 91. The stationary rotor drive shaft 85 extends in the front-rear direction so as to intersect the distribution shaft 91 in parallel with the rear-wheel drive input shaft 75.
A stationary rotor drive shaft 85 is disposed below the rear wheel drive input shaft 75 and a rear end of the stationary rotor drive shaft 85 connected to the universal joint shaft 36 is connected to a rear wheel axle Since the inclination angle of the universal joint shaft 36 is not excessively increased, the elevating range of the stopper rotor 80 is ensured due to the elevating movement of the weighing apparatus 2, can do.
8, when the stopper device 35 is not provided with the stopper rotor drive unit 82 separated from the rear axle case 33, the opening of the rear-end shaft hole 33b is sealed And is covered with a lid 108 as a lid cover. That is, the configuration of the rear axle case 33 can be changed to the specification with the stopper 35 or the specification without the stopper 35 only by attaching / detaching the lid 108 to / from the rear axle case 33 . There is no need to replace the rear axle case 33 to change the above specification. The lid body 108 can be detached and the stationary rotor drive unit 82 can be inserted into the rearward shaft hole 33b even after the husbandry machine is shipped with the specification that does not include the stopper 35, It is possible to mount the stopper 35 without exchanging the stopper 35.
The interlocking spur gear 88 is engaged with the drive shaft spur gear 100b of the rear-wheel drive input shaft 75 as shown in Figs. 7, 8, and 9. Fig. The interlocking spur gear 88 is rotatably and slidably disposed on the stationary rotor drive shaft 85. A rotor drive clutch 89 is provided on the stationary rotor drive shaft 85 in front of the interlocking spur gear 88. The rotor drive clutch 89 includes a clutch shifter 102 slidably fitted on a stationary rotor drive shaft 85, a clutch type impeller 101 formed on the clutch shifter 102, A clutch spring 103 which urges the clutch shaft 102 against the interlocking spur gear 88 and a camshaft 105 for the drive clutch which slides the clutch shifter 102 in the axial direction against the clutch spring 103 Respectively.
The clutch spring 103 is wound on the front end side of the stop rotor drive shaft 85 and disposed between the front end side of the clutch shifter 102 and the bearing 86 for the drive shaft. A cam engagement piece 104 is formed on the outer periphery of the front end portion of the clutch shifter 102 in a flange shape. And the cam on one end of the camshaft 105 for the drive clutch is locked to the cam engagement piece 104. The drive clutch camshaft 105 is projected outward from the left side surface of the rear axle case 33 (drive shaft case portion 43d) so that the drive clutch operation arm 106 is attached to the projecting end portion of the camshaft 105 for the drive clutch It is connected.
And the clutch shifter 102 is engaged with the stationary rotor drive shaft 85 for engagement. The clutch shifter 102 is provided so as to be keyed to the stationary rotor drive shaft 85 and slidable in the axial direction of the stationary rotor drive shaft 85. The drive clutch actuating arm 106 is operated through the clutch interlocking wire 136 so that the camshaft 105 for the drive clutch rotates so that the clutch shifter 102 slides on the stopper rotor drive shaft 85 in the forward and backward directions have.
With the above arrangement, the downward movement of the stopper 80 causes the power of the clutch shifter 102 to approach the interlocking spur gear 88 and to be transmitted to the stop rotor drive shaft 85, and the clutch shifter 102 rotates in conjunction with the interlocking spur gear 88 to drive the stationary rotor drive shaft 85. That is, when the clutch shifter 102 is slid toward the interlocking spur gear 88 side by the clutch spring 103 and the clutch type impeller 101 of the clutch shifter 102 is engaged with the interlocking spur gear 88 The rotation of the interlocking spur gear 88 is transmitted to the stationary rotor drive shaft 85 through the clutch shifter 102 and the stationary rotor drive shaft 85 is interlocked with the rear wheel drive input shaft 75, ≪ / RTI >
On the other hand, the upward movement of the stopper 80 causes the clutch shifter 102 to be separated from the linking spur gear 88, and the power transmitted to the stationary rotor drive shaft 85 is cut off. That is, the camshaft 105 for the drive clutch rotates by the operation of the drive clutch operation arm 106 to slide the clutch shifter 102 against the clutch spring 103 in the direction away from the linking spur gear 88 The rotation of the interlock spur gear 88 is not transmitted to the stop rotor drive shaft 85. [ The stop rotor 80 stops because the stop rotor drive shaft 85 does not rotate even when the rear wheel drive input shaft 75 rotates.
For example, in a case where the writing operation by the stopping rotor 80 is not performed in the filling part such as the water filling part, the intermediate partition part, the canopy part, etc., the operator rotates the rotor lifting handle 133 upward The stop rotor clutch 89 is turned off as the stop rotor 80 rises as described above.
Next, a second embodiment in which a rotor elevating motor 109 for raising and lowering the stopping rotor 80 is provided will be described with reference to Fig. And a rotor lifting motor 109 for lifting and lowering the stopping rotor 80. The rotor elevating motor 109 is an electric motor. A rotor lifting motor 109 is installed at a position near the lower end of the side frame 52 through a motor bracket 52d. The rotor elevating upper arm 142 is provided on the rotor elevating shaft 109a which is the output shaft of the rotor elevating motor 109. [ The lower arm 143 is connected to the lower link 132 via the upper arm 142 of the rotor. The rotor lifting shaft 109a is rotated by the forward or reverse rotation of the rotor lifting motor 109 to rotate the lower link 132 to move the rotor lifting frame 130 upward or downward, 80).
The rotor elevating motor 109 is rotated forward or reverse by the operation of the stationary rotor elevation switch 114 installed on the front panel. The operator rotates the rotor supporting vertical frame 130 by operating the stationary rotor lifting switch 114 so that the stationary rotor 80 is held at the raised position (non-working position) separated from the surface of the food grain. On the other hand, the worker operates the stopper rotor lifting switch 114 to move the rotor supporting vertical frame 130 downward, so that the stopper rotor 80 is held at the lowered position (working position) on the surface of the food grain. The up-and-down movement of the stopper 80 is performed in a non-interlocked manner with the lifting and lowering movement of the weighing unit 2. [ The stopper 80 can be held at the raised position (non-working position) even when the grain feeding device 2 is in the lowered position (working position).
The rotor lifting handle 133 can not grasp the operator unless the lifting device 2 is raised to the raised position (non-working position). When the stopper device 2 is in the lowered position (working position) and the stopper rotor 80 is lowered from the raised position (non-working position) to the lowered position (working position) ). When the stop rotor 80 is configured to be raised and lowered by the rotor elevating motor 109 as in the second embodiment, the stop rotor elevation switch 114 is operated by operating the stop rotor elevation switch 114 regardless of the position of the take- Since the rotor 80 can be moved up and down, workability can be improved.
6 and 7, in the embodiment described above, the running vehicle 1 on which the engine 21 is mounted and the take-off unit (loader) 1 mounted on the rear side of the running vehicle 1 through the elevating link mechanism 67 A rear axle case 33 for arranging the left and right rear wheels 4 via right and left rear wheel axles 43 and a stop rotor 80 for evenly smoothing the surface of the front wheel, The rear axle case 33 is provided with an input shaft case 43a for mounting a rear wheel drive input shaft 75 and left and right final gear cases 43a, And a side clutch case portion 43c provided with a distribution shaft 91 is formed in the stationary rotor 80. The stationary rotor 80 has a structure in which power is transmitted through the stationary rotor drive shaft 85, A drive shaft case portion 43d is formed in the rear axle case 33 and a stop rotor Since the drive shaft case 85 is provided and the drive shaft case portion 43d is formed in a two-layer structure below the input shaft case portion 43a, a stop rotor drive structure for drawing power to the stop rotor 80 side is provided at a low cost Can be deployed. The drive shaft case portion 43d can be elongated in the front-rear direction by utilizing the front-to-rear widths of the input shaft case portion 43a and the side clutch case portion 43c. That is, it is possible to sufficiently secure the length in the front-rear direction necessary for housing the stop rotor drive shaft 85, and to form the drive shaft case portion 43d. The input shaft case portion 43a and the drive shaft case portion 43d are reinforced with each other by a two-layer structure of the input shaft case portion 43a and the drive shaft case portion 43d.
7 and 8, the rear axle case 33b is opened in the rear side direction in the rear axle case 33, and the front side wall and the rear side wall of the rear axle case 33 are forward The front end side and the rear end side of the stationary rotor drive shaft 85 are rotatably supported via the drive shaft bearing 86 on the side of the drive shaft and the drive shaft bearings 87 on the rear side, The stationary rotor drive unit 82 including the stationary rotor drive unit 82 can be easily operated from the rear side of the rear axle case 33 to improve the assembling workability and the like of the stationary rotor drive unit 82. [ The stationary rotor clutch 89 and the like can be compactly mounted on the drive shaft casing portion 43d by using the front end side of the stationary rotor drive shaft 85. [
8 and 9, the stationary rotor clutch 89 is provided on the stationary rotor drive shaft 85 on the inner front side of the drive shaft casing portion 43d. Therefore, The stationary rotor drive unit 82 including the stationary rotor clutch 89 and the like can be easily disposed around the center shaft 85 and the assembling workability and the like of the stationary rotor drive unit 82 can be improved.
7 and 8, the power of the rear-wheel drive input shaft 75 and the rear-wheel drive input shaft 75, which transmit the power from the engine 21 to the rear axle case 33, A rear shaft hole 33b for inserting the stationary rotor driving shaft 85 is formed in the rear axle case 33 and a rear shaft hole 33b for inserting the stationary rotor driving shaft 85 is formed in the rear axle case 33, The rear axle case 33 and the rear axle case 33 are formed so as to be able to pull the stop rotor drive shaft 85 from the rear axle case 33b opened toward the rear side of the rear axle case 33 on the rear side of the rear axle case 33, It is not necessary to provide a case for disposing a stationary rotor drive gear or the like separately. The stationary rotor drive shaft 85 can be easily installed in the rear axle case 33. [ The reverse shaft hole 33b can be easily closed with the cover body 108 when the stop rotor drive shaft 85 is of an unnecessary specification. For example, even after the transfer of the rice-growing machine, it is possible to easily change the specification without the stopping rotor 80 or the specification with the stopping rotor 80.
7, the rear axle case 33 is provided with a rear wheel traveling input shaft 75 to which the power from the engine 21 is transmitted and a rear wheel driving input shaft 75 to which the left and right rear wheels And a stop rotor drive shaft 85 for transmitting power to the stop rotor 80 in cooperation with the rear wheel drive input shaft 75. The rear axle case 33 A gear 100a for a drive shaft for interlocking the stationary rotor drive shaft 85 is connected to the rear end of the drive shaft gear 100b for the distribution shaft 91, It is possible to construct the drive shaft gear 100b and the distribution shaft gear 100a at a low cost by integrally forming the drive shaft gear 100b and the distribution shaft gear 100a, 100a can be compactly assembled.
6 and 10, the rear axle case 33 is provided with a rear wheel traveling input shaft 75 to which the power from the engine 21 is transmitted and a rear wheel driving input shaft 75 to which the left and right rear wheels A distribution shaft 91 for transmitting power to the rear wheel input shaft 4 and a stop rotor drive shaft 85 for transmitting power to the stop rotor 80 in cooperation with the rear wheel traveling input shaft 75, 75 via the distributing shaft bevel gear 100a and the interlocking bevel gear 107 so that the rear wheel driving input shaft 75 is interposed between the distributing shaft 91 and the interlocking bevel gear 107, The stationary rotor drive shaft 85 can be supported at the position of the rear axle case 33 corresponding to the input portion of the stationary rotor 80 since the stationary rotor drive shaft 85 is provided offset in the direction in which the stationary rotor 80 moves away. The mounting width dimension of the rear wheel drive input shaft 75 and the stop rotor drive shaft 85 in the vertical direction can be made compact. It is possible to assemble the stationary rotor drive shaft 85 to the rear axle case 33 without largely limiting the arrangement of the rear wheel drive input shaft 75 without projecting the rear axle case 33 downward.
In the above embodiment, as shown in Figs. 7 to 9, a structure is adopted in which the stationary rotor clutch 89 that turns on and off the transmission of power to the stationary rotor drive shaft 85 is provided, (The bevel gear 100a for the distribution shaft) and the gear for the drive shaft are formed by a spur gear (the spur gear 100b for the drive shaft) so that the spur gear 100b for the drive shaft is formed with a larger diameter than the bevel gear 100a for the distribution shaft The stationary rotor drive shaft 85 is arranged in parallel on the rear wheel drive input shaft 75 and the stationary rotor clutch 89 is provided in front of the interlocking spur gear 88 of the stationary rotor drive shaft 85 The spur gear 100b for the drive shaft and the bevel gear 100a for the distribution shaft can be easily processed by forging or the like, and the manufacturing cost can be reduced. The stop rotor drive shaft 85 is extended forward from the linking spur gear 88 in the rear axle case 33 so that the stop rotor clutch 89 is compactly installed in the front portion of the stop rotor drive shaft 85 .
8, the spur gear 100b for the drive shaft is integrally formed with the bevel gear 100a for the distribution shaft of the rear-wheel drive input shaft 75, The rear wheel drive input shaft 75 or the stationary rotor drive shaft 85 is inserted and withdrawn in the axial direction so as to be attached to and detached from the rear axle case 33 because the stop rotor drive shaft 85 is connected to the rear wheel drive input shaft 75 . The assembling and disassembling workability of the stationary rotor drive unit 82 including the rear wheel drive input unit 90 including the rear wheel drive input shaft 75 or the stationary rotor drive shaft 85 can be improved.
8 and 9, an interlocking spur gear 88 for connecting a stationary rotor drive shaft 85 to a rear wheel drive input shaft 75 to a stationary rotor drive shaft 85, A stationary rotor clutch 89 that turns on and off the transmission of power from the traveling input shaft 75 to the stationary rotor drive shaft 85 and bearings 86 and 87 for the stationary rotor drive shaft 85 are disposed, Since the stationary rotor drive unit 82 is constructed so as to be able to pull out the stationary rotor drive unit 82 from the rear side of the rear axle case 33, the stationary rotor drive shaft 85 is inserted / removed axially, Can be attached to and detached from the axle case (33). The assembling and disassembling workability of the stationary rotor driving unit 82 can be improved.
