KR20020039642A - Riding type rice transplanting vehicle - Google Patents

Abstract

It is an object of the present invention to provide a rice transplanter which is designed to make the seeding mechanism compact. In the present invention, a plurality of pipe-shaped front and rear extension frames extending in the front-rear direction, a pipe-shaped left-right extension frame extended in the left-right width direction hypothesized between the front-end portions of the front-rear extension frame, and rear ends of each front-rear extension frame. A pipe frame-shaped electric casing consisting of a pipe-shaped rear end frame extending in the left and right width directions successively installed in the pipe is formed, and the front end portions of the drive shafts accommodated to rotate in each front and rear extension frame are rotated in the left and right extension frames. The interlocking connection along the interlocking shaft accommodated for movement, and the seeding rock shaft accommodated for rotational movement in the rear frame at the rear end of each driving shaft through the unit clutch, and the planting aid Interlocking and connecting the included seeding arm, and the unit clutch is disposed in the rear frame.

Description

Passenger rice transplanter {RIDING TYPE RICE TRANSPLANTING VEHICLE}

Conventional passenger seeding machines are arranged in the rear of the main body so that the seeding machine can be lifted and lifted up through the lifting mechanism, and seedling placement tables and seeding mechanisms are disposed on the seedling mechanism, and the seeding mechanism is placed on the seedling placement table by the seeding mechanism. Seedlings were sown in rice fields.

The seeding mechanism is provided with an aluminum die casting electric chain case extending in the front-rear direction at a horizontally spaced interval in a cylindrical pipe-shaped support frame extending in the left-right width direction, and mounted on the prime mover of the rider body. A seeding arm accommodated for interlocking movement with the interlocked PTO shaft interlocked with the interlocking shaft accommodated for rotational movement inside the support frame and extending the interlocking shaft in the left and right width directions inside the electric chain case. The interlocking linkage is connected to the shaft through an electric chain, and the seeding arm including planting relief is interlocked with the seeding rock shaft. A unit clutch is provided between the electric chain and the seeding rock shaft. By this, the electric chain and the seed rock shaft were made into the connected state or the cut state.

However, in the seeding mechanism of the conventional passenger rice transplanter, since the electric chain case made of aluminum die casting was attached to the support frame, and the power transmission was performed by the electric chain arrange | positioned inside this electric chain case, As the power transmission path structure becomes complicated, the electric chain case is manufactured by aluminum die casting, which makes manufacturing cost expensive and heavy.

For this reason, it has been a problem to simplify the structure of the seeding mechanism and to reduce the weight.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger rice transplanter, and more particularly, to a seeding mechanism provided in a seeding machine for seedling seedlings.

1 is a left side view showing a rice transplanter according to the present invention.

2 is a plan view of the machine body frame.

3 is a partial plan sectional view showing a seeding mechanism.

4 is a partial plan sectional view of the seeding mechanism.

5 is a plan sectional view showing the unit clutch.

6 is a partial cross-sectional view of the unit clutch.

7 is a plan view of the unit clutch.

8 is a component diagram showing an electric gear.

9 is a component diagram showing a clutch actuator.

Fig. 10 is a side view showing the trajectory of planting relief.

Accordingly, the present invention provides a passenger rice transplanter in which a seeding machine is disposed at the rear of the main body of the machine, and the seeding mechanism installed in the seeding machine is linked to the prime mover provided in the main body of the machine, and the seeding mechanism has a plurality of pipe shapes extending in the front-rear direction. A pipe-shaped left and right extension frame extending in the left and right width direction hypothesized between the front and rear extension frame of the front and rear extension frames, and a pipe shape extending in the left and right width direction successively provided at the rear end of each front and rear extension frame. The drive shaft front end portion which forms the pipe frame shape casing which consists of a rear frame of the said frame, and accommodated for rotational movement in each front and rear extension frame is accommodated by the interlocking shaft accommodated for rotational movement in the left and right extension frames. Simultaneous connection and seeding accommodated at the rear end of each drive shaft for rotational movement in the rear frame The arm shaft was interlocked with the unit clutch, and the seed arm including planting aid was interlocked with the seed arm, and the unit clutch was disposed in the rear frame.

In addition, the unit clutch loosely engages the transmission gear interlocked with the drive shaft on the seed arm shaft, and the clutch actuator for performing the clutch operation according to the connection or cutting state of the transmission gear and the seed arm shaft is replaced with the seed arm shaft. A stop member for stopping the driving of the seeding arm by cutting the transmission gear and the seeding arm shaft by allowing the clutching element to slide only within a predetermined rotational movement angle range of the clutch actuator. Excretion near the seeding rock axis.

In addition, the stop member clutches only when the rotational movement angle of the clutch actuator is between the rotational movement angle when the planting aid is located in the float upward direction and the rotational movement angle at the position where the planting aid extracts the seedlings. The sliding of the actuator was allowed.

In addition, an insertion recess in which the stop member is inserted is formed in the clutch actuator only within a predetermined angle range of the clutch actuator, and the end of the insertion recess is inclined.

The rice transplanter which concerns on this invention arrange | positions a seeding machine in the rear part of a cab body, installs the seeding mechanism which performs seeding work of a seedling machine in this seeding machine, and connects this seeding mechanism to the prime mover provided in the rider main body. .

The seeding mechanism includes a plurality of pipe-shaped front and rear extension frames extending in the front-rear direction, a pipe-shaped left-right extension frame extended in the left-right width direction hypothesized between the front-end portion of the front-rear extension frame, and the rear of each front-rear extension frame. The pipe casing-shaped electric casing which consists of a pipe | frame rear end frame extended in the left-right width direction provided continuously at the edge part is formed.

As a result, the seeding mechanism can be reduced in weight, and the assembly workability can be improved to reduce the manufacturing cost.

Furthermore, the front ends of the drive shafts accommodated in the front and rear extension frames are interlocked by the interlocking shafts accommodated in the left and right extension frames, and at the rear end of each drive shaft, Since the seeding arm shaft accommodated for rotational movement is interlocked with the unit clutch and the seeding arm including planting aid is linked to the seeding arm shaft, the power transmission structure of the seeding mechanism can be simplified. It is possible to reduce the size and weight of the seeding mechanism and reduce the manufacturing cost.

Furthermore, since the unit clutch is disposed in the rear frame, the assembly workability of the unit clutch can be improved.

Specifically, the unit clutch loosely fits the transmission gear interlocked with the drive shaft to the seed rock shaft, and the clutch actuator for performing the clutch operation according to bringing the drive gear and the seed rock shaft into a connected state or a cut state is a seed arm. A stop member for stopping the driving of the seeding arm shaft by cutting the transmission gear or the seeding arm shaft by allowing the clutch actuator to slide only within a predetermined rotational movement angle range of the clutch actuator. It is made into the structure which excavated in the vicinity of the seeding rock axis.

Thereby, the unit clutch can be miniaturized as much as possible.

In addition, the stop member may be used only when the rotational movement angle of the clutch actuator is between the rotational movement angle when the planting aid is located above the float and the rotational movement angle at the position where the planting aid extracts the seedlings. It allows slipping, so that when the unit clutch is operated, planting aids do not stop and collide with the paddy field or road floor without stopping while the front end of the planting place is located below the float. At the same time, it is possible to stop planting aid while the seedlings continue to hold seedlings, thereby preventing the waste of seedlings.

In addition, the clutch actuator includes an insertion recess in which the stop member is inserted only within a predetermined rotational movement angle range of the clutch actuator, and the end of the insertion recess is inclined so that the clutch actuator rotates. The stop member is smoothly inserted into the insertion recess, and the clutch operation of the unit clutch can be smoothly operated.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described concretely, referring drawings.

The passenger rice transplanter 1 which concerns on this invention is installed in a row so that the seeding machine 3 can be elevated up and down via the lifting mechanism 4 in the rear part of the rider main body 2 comprised so that it may drive by itself as shown in FIG. Doing.

As shown in FIG. 1, the travel main body 2 arranges the travel portion 6 in the lower portion of the machine body frame 5, while the prime mover portion 7 is located in the upper front portion of the machine body frame 5. The driving operation part 8 is arrange | positioned at the position immediately behind this prime mover part 7.

As shown in Figs. 1 and 2, the machine body frame 5 is a hollow extending in the left and right width direction between the front ends of the pair of left and right cross-sectional rectangular main pipes 9 and 10 extending in the front-rear direction. Cylindrical shear pipes 11 are installed.

Moreover, the machine main body frame 5 installs the cylindrical engine support pipe 12 extended in the left-right width direction between the front middle of the main pipes 9 and 10, and of this engine support pipe 12, While installing the engine support plate 13 extended in the front-rear direction between the center part and the center part of the front end pipe 11, while attaching a pair of left and right mission support brackets 14 and 15 to the center rear part of the engine support pipe 12. In addition, the rear end of the main pipes 9 and 10 has a low inclination and a high inclination at the rear, and the rear end of the main pipes 9 and 10 has an inclination of a pair of left and right cross-sectional rectangles extending in a high inclination and a low inclination. The front ends of the pipes 16 and 17 are continuously installed, and extend in the front-rear direction between the mission support brackets 14 and 15 attached to the engine support pipe 12 and the rear ends of the inclined pipes 16 and 17. The mission case 18 is hypothesized. In the figure, 19 is a door-shaped seat support pipe constructed between the middle portions of the main pipes 9 and 10, and 20 and 21 are extended in the left and right width directions in the middle portion of the main pipes 9 and 10. The tread plate support pipe attached at, 22 is a pair of left and right weights for adjusting the front and rear weight balance of the machine body, 23 is a peripheral seeding marker, and 24 is a center marker.

As shown in FIG. 1 and FIG. 2, the traveling part 6 integrally forms a front axle case 25 in front of the mission case 18, and the front axle case 25. The rear axle case 28 is integrally formed on the rear side of the mission case 18 while interlocking the pair of front wheels 26 and 27 to the left and right, and the rear axle case 28 The left and right pairs of rear wheels 29 and 30 are interlocked with each other.

As shown in FIGS. 1 and 2, the prime mover unit 7 mounts an engine 31 as a prime mover on an upper portion of the engine support plate 13, and interlocks and connects the mission case 18 to the engine 31. have.

In addition, the prime mover 7 arranges the fuel tank 32 at a position immediately above the engine 31, and the engine 31 is covered with a bonnet 33. ), Preliminary seedling placing tables 34 and 34 for placing preliminary seedlings are arranged in the left and right side positions of).

As shown in FIG. 1, the driving operation unit 8 stands and installs a steering post 35 on the bonnet 33, arranges the steering wheel 36 at the upper end of the steering post 35, and the steering wheel ( The seat 37 is provided at the position immediately behind 36.

In addition, the driving operation unit 8 moves the shift lever 38 for shift operation of the rider main body 2 on the left side of the bonnet 33 and the clutch lever 39 which enables clutch operation outside the machine main body in the front-rear direction. A seeding raising / lowering lever for displacing the seedling machine 3 on the right side of the seat 37 while allowing the clutch pedal 40 to be operated by stepping on the clutch pedal 40. 41) is installed to allow rocking operation in forward and backward directions.

In addition, the driving operation unit 8 arranges a pair of left and right front walking boards 44 and 44 on the left and right sides of the bonnet 33, and covers the cover body 45 from the lower part of the seat 37 to the left and right sides. The bottom part is formed by the front walk boards 44 and 44 and the cover main body 45. 46 in the figure is an elevating walk board formed in the cover main body 45.

The seeding machine 3 connects the seeding mechanism 53 to the rear part of the lifting mechanism 4, as shown in FIG. 1, and puts the seedling mounting base 47 in the upper part of this seeding mechanism 53 high, and low back. It is on a ramp. 48 in the figure is a float.

As shown in FIG. 2, the proximal end of the PTO joint 50 is interlocked to the front end of the PTO output shaft 49 protruding rearward from the middle of the mission case 18, and the PTO joint The proximal end of the relay shaft 51 is interlockedly connected to the front end of 50, and the proximal end of the conduction shaft 52 is interlocked to the front end of the relay shaft 51, and the The front end is interlocked with the seeding mechanism 53 to transmit power to the seeding machine 3.

The elevating mechanism 4 installs a pair of left and right upper links 54 and 54 between the upper portions of the rear sloped pipes 16 and 17 of the rider body 2 so as to be capable of vertically rotating movement. A pair of left and right lower links 55 and 55 are installed between the middle portions of the inclined pipes 16 and 17 so as to be rotatable vertically and connected to the lower links 55 and 55. The seed drill 3 is moved up and down by rotating 56 and 56 up and down with a lifting cylinder (not shown).

As shown in Fig. 3, the seeding mechanism 53 includes three pipe-shaped front and rear extension frames 57, 58, and 59 extending in the front and rear directions disposed at intervals in the left and right width directions, and the front and rear extension frames ( Two pipe-shaped left and right extension frames 60, 61 extending in the left and right width directions hypothesized between the front ends of the 57, 58, and 59, and the rear ends of the front and rear extension frames 57, 58, and 59, respectively. A pipe frame-shaped electric casing 65 consisting of pipe-shaped rear end frames 62, 63, and 64 extending in the left and right width directions provided is formed. In the figure, 66 is a hollow connection body provided between the front and rear extension frames 57, 58 and 59 and the left and right extension frames 60 and 61. As shown in FIG.

Thus, in this embodiment, since the electric casing 65 of the seeding mechanism 53 is formed in the shape of a pipe frame, the seeding mechanism 53 can be reduced in weight and cost.

In addition, the seeding mechanism 53 accommodates the drive shafts 67, 68, and 69 in the front and rear extension frames 57, 58, and 59 so as to be rotatable, respectively, while the seeding mechanism 53 is interlocked with the left and right extension frames 60, 61, respectively. (70, 71) are accommodated so as to rotate, respectively, and the seed frame rock axes (72, 73, 74) are accommodated in the rear frame (62, 63, 64), respectively, so that the PTO output shaft ( At the same time, the drive shaft 68 of the center is interlocked with each other, and the front ends of the drive shafts 67, 68, and 69 are interlocked by the interlocking shafts 70 and 71, respectively. The seeding arm shafts 72, 73 and 74 are interlocked with each other via the unit clutches 75, 76 and 77 at the rear end of the unit. In the figure, reference numeral 78 is a horizontal feed mechanism for reciprocating the seedling placing table 47 in the horizontal direction.

In this way, the seeding mechanism is connected to the drive shafts 67, 68, 69, the drive shafts 70, 71, and the seed rock shafts 72, 73, 74 in the pipe frame-shaped electric casing 65 inside. The power transmission structure of 53 can be simplified, and the size and weight of the seeding mechanism 53 can be reduced and manufacturing cost can be reduced.

In particular, by arranging the unit clutches 75, 76, 77 in the rear frames 62, 63, 64, the assembling workability of the unit clutches 75, 76, 77 can be improved.

Each seeding rock shaft 72, 73, 74 is interlocked with a front crank 81 at an intermediate portion of the seeding rock 80 including a planting relief 79, and the rear end of the seeding rock 80. The part is connected via the rear crank 83 to the rear end of the support main body 82 provided on the upper end frames 62, 63, and 64.

Each of the unit clutches 75, 76, 77 has an equivalent structure, and when the structure of the unit clutch 75 on the left side is described, the unit clutch 75 has a seeding arm shaft (as shown in Figs. 72, the drive gear 67 and the drive gear (bevel gear) 84 interlocked with the drive shaft 67 is loosely fitted to enable rotational movement, and the drive gear 84 and the seed arm shaft 72 are connected or cut. As shown, the clutch actuator 85 for carrying out the clutch operation is arranged to slide along the seed arm shaft 72, and the clutch actuator 85 and the seed arm shaft 72 are splined together. Interlocked by. In the figure, 86 is a spline groove, 87 is a biasing spring for applying a force to the clutch actuator 85 toward the electric gear 84, 93 is a bearing, 94 is a bevel gear, and 95 is a shaft supporting body.

As shown in FIGS. 5 and 8, the transmission gear 84 forms a tooth surface 89 having an inclination at the end of the cylindrical gear body 88, and a portion of the tooth surface 89 is formed on the gear body. Two engagement parts 90 cut out in the shape of a recess along the axis line 88 are formed at intervals in the circumferential direction.

On the other hand, the clutch actuator 85 has two clutch claws projecting along the axis of the actuator body 91 at the end of the cylindrical actuator body 91 as shown in Figs. 92 is formed at intervals in the circumferential direction.

Then, the force of the clutch actuator 85 is added to the electric gear 84 by the force of the force spring 87, and the clutch claw 92 of the clutch actuator 85 is connected to the electric gear 84. In the case of engaging the engagement portion 90, the transmission gear 84 and the seed arm shaft 72 are in a connected state, while the clutch actuator 85 resists the bias force of the biasing spring 87 to transmit the transmission gear. When the engagement between the clutch claw 92 of the clutch operating body 85 and the engaging portion 90 of the electric gear 84 is released, the motor is moved to the opposite direction away from the 84. The seeding rock shaft 72 is cut.

Thus, in this embodiment, the clutch claw 92 of the clutch actuator 85 is integrally formed with the transmission gear 84 on a part of the tooth surface 89 of the transmission gear 84. This eliminates the need to separately install the clutch claw 92 and the engagement member of the clutch actuator 85, which can reduce the number of parts and at the same time reduce the size and weight of the unit clutches 75, 76 and 77. We can plan.

Furthermore, in this embodiment, since the engagement portion 90 is formed concave with respect to the tooth surface 89 of the transmission gear 84, the transmission gear 84 is molded by precision casting and at the same time the engagement portion ( 90 can be formed, so that the engagement portion 90 can be easily formed, and the manufacturing cost can be reduced.

In addition, the unit clutch 75 forms openings 96 and 97 which are bulge-molded in the entirety and rear of the rear frame 62 as shown in FIGS. 5 to 7, and the front opening 96. While connecting the rear end of the front and rear extension frame 57, the disc lid cover body 98 was installed in the rear opening 97, and bulge molding was also performed on the upper end of the rear frame 62. An opening 99 is formed, and a clutch operating member supporter 101 for supporting the clutch operating member 100 for connecting and cutting the unit clutch 75 is attached to the opening 99.

The clutch operating member supporter 101 forms a circumferential fitting portion 102 at the lower portion thereof, and inserts the fitting portion 102 into the upper opening 99 of the rear end frame 62 and the rear end frame 62. Is installed using the fixing bolt 104 on the bracket 103 attached to the upper portion of the crankcase, and rotates the circumferential clutch operating member 100 in the through hole 105 penetrating from the upward direction to the downward direction. Attached to exercise. 112 is the packing.

Thus, since the opening 99 is formed in the upper part of the rear-end frame 62, and the clutch operating member support body 101 for supporting the clutch operating member 100 is attached to this opening 99, an electric gear ( 84) and the seeding arm shaft 72 on which the clutch actuator 85 is assembled to the rear frame 62, and then the clutch operating member supporter 101 on which the clutch operating member 100 is mounted can be assembled. Workability can be improved.

Moreover, only by removing the clutch operating member supporter 101, maintenance work of the parts constituting the unit clutch 75 such as the transmission gear 84, the clutch actuator 85, the seed arm shaft 72, and the like can be performed. This can facilitate the maintenance of the unit clutch 75.

In particular, the clutch operating member support 101 can be attached to the opening 99 of the rear end frame 62 by inserting the insert 102 of the clutch operating member support 101 into the bulge-shaped opening 99. As a result, the assembly accuracy can be improved, and since the assembly can be performed without using oil or the like, maintenance can be facilitated.

The clutch operation member 100 forms an operation claw 106 at the lower end, engages the operation claw 106 with the flange portion 107 of the clutch actuator 85, and clutch operation lever 108 at the upper end. ) Is attached. In the figure, 109 is a biasing spring, 110 is a fixing screw for a biasing spring, and 111 is an adjustment plate.

In addition, as shown in FIG. 3, each clutch operation member 100 is interlocked with an operation lever (not shown) disposed on the rear surface of the seedling placing table 47 through the clutch operation wires 118, 119, and 120. , By attaching the outer surface bearings 121, 122, 123 of the respective clutch operation wires 118, 119, 120 to the front and rear extension frames 57, 58, 59, respectively. It is attached along each front and back extension frame 57, 58, 59, and the clutch operation wires 118, 119, 120 are moved so that the seed arm 80, the front and rear cranks 81, 83, and the left and right which rotate rotationally. The horizontal conveyance mechanism 78, the seedling placing table 47, etc. are not made to contact.

Then, when the clutch operating member 100 is rotated using the clutch operating lever 108, the operation claw 106 presses the flange portion 107 of the clutch actuator 85, and the clutch actuator 85 Resisting the biasing force of the biasing spring 87 and moving in the opposite direction away from the transmission gear 84, the clutch claw 92 of the clutch actuator 85 and the engaging portion 90 of the transmission gear 84 The engagement is released, and the transmission gear 84 and the seed rock shaft 72 are cut.

In addition, the clutch operating member supporter 101 allows the clutch actuator 85 to slide along the seed arm shaft 72 only within a predetermined rotational movement angle range of the clutch actuator 85. A stop member 113 for stopping the driving of the seeding arm 80 with the 84 and the seeding arm shaft 72 in a cut state is attached close to the seeding arm shaft 72.

In other words, the stop member 113 is screwed toward the seed arm shaft 72 as a lower surface of the fitting portion 102 of the clutch operating member supporter 101, and immediately above the seed arm shaft 72. And the insertion recess 114 inserted by the stop member 113 into the end face of the clutch actuator 85 in the circumferential direction, and both ends 115 of the insertion recess 114 are formed. , 116 is formed to be inclined.

When the stop member 113 can be inserted into the insertion recess 114 of the clutch actuator 85, that is, when the clutch actuator 85 is within a predetermined rotational movement angle range, the clutch operating lever ( When the clutch operating member 100 is rotated using the 108, the stop member 113 is inserted into the insertion recess 114 of the clutch actuator 85, and the clutch actuator 85 is the seeding arm shaft ( 72, while the stop member 113 cannot be inserted into the recess 114 of the clutch actuator 85, i.e., the clutch actuator 85 is outside the predetermined rotational angle range. Even when the clutch operating member 100 is rotated using the clutch operating lever 108, the stop member 113 is stuck to the end face 117 of the clutch operating body 85 so that the movement of the clutch operating body 85 can be prevented. It is stopped.

The predetermined rotational movement angle range of the clutch actuator 85 includes rotational rotation angle and planting aid when the front end of the planting claw 79 is located above the float 48, as shown in FIG. 79 is set to become a rotational movement angle between the rotational movement angle at the position where the seedlings are taken out from the seedling placing table 47.

Thus, in this embodiment, the stop member 113 is provided in the unit clutch 75, and by the action of the stop member 113, the rotational movement angle of the clutch operating body 85 is reduced. Allows the clutch actuator 85 to slide along the seeding arm shaft 72 only between the rotational movement angle when the float 48 is located above and the rotational movement angle at the position where the planting pegs 79 take out the seedlings. Therefore, when the unit clutch 75 is operated, the front end of the planting mat 79 is not stopped with the front end of the planting mat 79 positioned below the float 48, and the planting mat 79 is placed on the rice field floor or on the road. It is possible to prevent damage by colliding with the floor in advance, and at the same time, there is no stopping of the planting tank 79 while keeping the seedlings, and no waste of seedlings.

Furthermore, since the stop member 113 is disposed in the vicinity of the seeding arm shaft 72, the unit clutch 75 can be made as small as possible.

Particularly, since the stop member 113 is attached to the clutch operating member supporter 101, the clutch operating member 100 and the stop member 113 are attached to the same member (the clutch operating member supporter), thereby positioning accuracy between the two. Is improved, and the clutch operation by the clutch operation member 100 can be smoothly performed.

In addition, in this embodiment, since both ends 115 and 116 of the insertion recess 114 provided in the clutch actuator 85 are formed to be inclined, the insertion recess of the clutch actuator 85 that rotates ( The stop member 113 is smoothly inserted into the 114, and the clutch operation of the unit clutch 75 can be smoothly operated.

This invention is implemented in the form as described above, and produces the effect as described below.

In other words, in the present invention, a plurality of pipe-shaped front and rear extension frames extending in the front-rear direction, a pipe-shaped left-right extension frame hypothesized between the front and rear ends of the front and rear extension frames, and each front and rear extension frame Since the electric casing of the seeding mechanism consisting of the pipe-shaped rear end frame extended in the left-right width direction which is provided next to the rear end of the structure is formed in the shape of a pipe frame, the seeding mechanism can be reduced in weight and assembly workability can be achieved. In this way, the manufacturing cost can be reduced.

In addition, the front ends of the drive shafts accommodated in the front and rear extension frames are interlocked by the interlocking shafts accommodated in the left and right extension frames, and at the rear end of each drive shaft. Since the seeding arm shaft accommodated for rotational movement is interlocked with the unit clutch, and the seeding arm including planting aid is linked with the seeding arm shaft, the power transmission structure of the seeding mechanism can be simplified. This also makes it possible to reduce the size and weight of the seeding mechanism and reduce the manufacturing cost.

Furthermore, since the unit clutch is disposed in the rear frame, the assembly workability of the unit clutch can be improved.

In particular, the unit clutch loosely engages the transmission gear interlocked with the drive shaft on the seed arm shaft, and the clutch actuator for the clutch operation according to the transmission gear and the seed arm shaft in the connected state or the cut state is the seed rock shaft. A stop for stopping the driving of the seeding arm with the transmission gear and the seeding arm shaft cut by allowing the clutch actuator to slide only within a predetermined rotational angle range by arranging to slide accordingly. Since the member is arranged in the vicinity of the seed rock axis, the unit clutch can be miniaturized as much as possible.

Further, the stop member is the clutch actuator only when the rotational movement angle of the clutch actuator is between the rotational movement angle when the planting aid is located above the float and the rotational movement angle at the position where the planting aid extracts the seedlings. Since the unit clutch is operated when the unit clutch is operated, the planting aid collides with the rice field floor or the road floor without being stopped while the front end of the planting bird is located below the float. At the same time, the planting aid does not stop in the state where the seedlings continue to hold the seedlings, and the waste of the seedlings can be prevented.

In addition, since the clutch actuator is formed with a recess into which the stop member is inserted only within a predetermined rotational movement angle range of the clutch actuator, the end of the insertion recess is inclined so that the clutch actuator rotates. The stop member is smoothly inserted into the insertion recess of the clutch, and the clutch operation of the unit clutch can be smoothly operated.

Claims (4)

In the passenger rice transplanter which arrange | positions a seeding machine in the rear part of a rider main body, and connects the seeding mechanism installed in the said seeding machine to the prime mover designed to the rider main body, The seeding mechanism includes a plurality of pipe-shaped front and rear extension frames extending in the front and rear directions, A pipe-shaped left and right extension frame extending in the left and right width direction hypothesized between the front and rear ends of the front and rear extension frames; A pipe frame-shaped electric casing formed of a pipe-shaped rear end frame extended in the left and right width directions successively provided at the rear end of each front and rear extension frame, The front end of the drive shaft accommodated for rotational movement in each front and rear extension frame is interlocked by the interlocking shaft accommodated for rotational movement in the left and right extension frames, and at the rear end of each drive shaft, the rotational movement in the rear frame. And interlocking the seeding arm shaft accommodated so as to be interlocked through a unit clutch, and linking the seeding arm including a planting relief to the seeding arm shaft. And a seeding mechanism for a rice transplanter, wherein the unit clutch is disposed on a rear frame. The method of claim 1, The unit clutch loosely inserts the transmission gear interlocked with the drive shaft to the seed rock shaft, and the clutch actuator for performing the clutch operation according to the transmission gear and the seed rock shaft being in a connected state or a cut state. And a stop member for stopping the driving of the seeding arm shaft by cutting the transmission gear and the seeding arm shaft by allowing the clutch actuator to slide only within a predetermined rotational movement angle range. A seeding mechanism for a passenger rice transplanter, characterized by excretion near the arm axis. The method of claim 2, The stop member allows the clutch actuator to slide only between the rotational movement angle of the clutch actuator and the rotational movement angle when the planting aid is located above the float and the rotational movement angle at the position where the planting aid extracts the seedlings. A seeding mechanism for a rice transplanter, characterized in that. The method of claim 2 or 3, The seeding mechanism of the rice transplanter characterized by forming an insertion recess in which the stop member inserts only in the clutch actuator within a predetermined rotational movement angle range, and inclining the end portion of the insertion recess.