JPH10225214A - Planting part for compact riding rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dissolve the problems that a special case is provided to drive planting pawls, constitution is complicated and a cost is high in the planting part of a conventional rice transplanter. SOLUTION: In this planting part of a riding rice transplanter, a planting transmission frame 20 to be the lower part of the supporting frame of the planting part for transmitting driving power to the respective planting pawls 17 of four-line planting is integrally molded in a gate shape in plane view by connecting a pipe body for pivotally supporting a transmission shaft inside, a pair of the left and right planting pawls 17 are arranged at both end parts of an open side and the opening side end part of an upper part supporting frame 98 for bending the pipe body to the gate shape is fixed to the front part of the planting transmission frame 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for reducing the weight of a seedling table in a planting section of a rice transplanter and driving force for lateral feeding and a power transmitting section of a planting claw to be light and simple.

[0002]

2. Description of the Related Art In recent years, workers have become aging due to agricultural circumstances, and walking-type rice transplanters place a heavy burden on workers. Therefore, riding-type rice transplanters have been desired. In the riding type rice transplanter, a planting portion is mounted via a lifting link mechanism at a rear portion of an airframe that is long in the front-rear direction.
The planting unit is a vertical transmission and a lateral transmission shift of the seedling mounting table, a planting transmission case for performing a drive shift of a planting claw, a planting transmission case arranged in front and rear, positions symmetrically to the planting transmission case, A rotary case having a planting claw is provided, and a power transmission system in which a plurality of cases are assembled is configured. In addition, these cases were formed by aluminum die casting.

[0003]

However, a conventional power transmission system for a planted part, such as a power transmission system for a planted part, manufactured by die-casting aluminum with a plurality of cases is heavy, and the total weight of the planted part is large. Therefore, the load on the rear portion of the body frame, which is the base of the lifting link mechanism for pulling the planting portion, becomes large, and it is necessary to increase the rigidity of the body frame to make the frame large. Further, in order to maintain the front-rear balance, it is necessary to arrange a balance weight at the front of the traveling vehicle, so that the overall shape of the traveling vehicle is increased and the cost is increased. In addition, in a configuration in which a plurality of cases are assembled, an assembling operation becomes complicated, and an assembling cost in a factory increases. Therefore, a power transmission unit having a simple configuration and having a configuration that can be easily assembled and reduced in cost has been desired.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in a riding rice transplanter in which a power section is disposed at the front of the body frame, power is transmitted to the front and rear wheels, and a four-row planting section is disposed at the rear of the body so as to be movable up and down, the four-row planting claw is provided. The planting transmission frame, which is the lower part of the supporting frame of the planting part, is integrally formed into a portal type in plan view, and a pair of left and right planting claws are arranged at both ends on the open side. In addition, the planting transmission frame is connected to a pipe body that supports the transmission shaft inside. Further, at the front of the planting transmission frame, the opening side end of the upper support frame that bends the pipe body in a gate shape is fixed, and the planting transmission frame and the upper support frame constitute a planting portion support frame. I have. In addition, a center float is arranged below the left and right central portions of the planting transmission frame, and side floats are arranged at symmetrical positions with respect to the center float to stabilize the planting posture in the planting portion. In addition, a fulcrum shaft supporting the center float and the side float is horizontally provided below the planting transmission frame, and a planting depth setting lever projects forward from the fulcrum shaft, and the fulcrum shaft is operated by operating the planting depth setting lever. The float rotates and the vertical height between the fulcrum shaft and each float can be adjusted.

[0005]

Next, an embodiment of the present invention will be described. 1 is an overall side view of a small riding rice transplanter having a body frame which is a pipe body, FIG. 2 is a partial sectional view of the entire riding rice transplanter, FIG. 3 is a side sectional view showing the front upper part of the small riding rice transplanter, and FIG. Is a rear cross-sectional view of a transmission case, FIG. 5 is a side view of a cylindrical body that supports a rolling fulcrum shaft of a planting portion, FIG. 6 is a plan view, a partial cross-sectional view showing a planting transmission frame of the present invention,
7 is a side view, FIG. 8 is a partial plan view showing a power transmission configuration of the planting transmission frame, FIG. 9 is a side view showing the same power transmission configuration, and FIG. 10 is removal of a transmission shaft in a transmission pipe. FIG. 11 is a perspective sectional view of a seedling table on which a vertical feed belt is arranged, and FIG. 12 is a side sectional view of a transmission case.

First, a small riding rice transplanter is shown in FIGS.
A more general configuration will be described. A front and rear wheel 6 and a rear wheel 8 are suspended at a front portion and a rear portion of the traveling vehicle 1, an engine E is mounted above a front portion of a vehicle body frame F, and a transmission case M formed to be long in the front and rear direction is disposed at the left and right center of the traveling vehicle 1. The front wheel 6 is supported at the front of the transmission case M, and the rear wheel 8 is supported at the rear of the transmission case 4. Spare seedling mounts 10 are disposed on both sides of a bonnet 12e that covers the engine 2, and the transmission case M and the like are covered by a body cover 12 on which an operator or the like rides. 13 and the driver's seat 1
3 and a steering handle 1 at the rear of the bonnet 12e.
4 are arranged.

[0007] The planting section 15 is composed of a seedling stand 16 formed by four-row planting, a plurality of planting claws 17, and the like. A planting transmission frame 20 is supported by the planting transmission frame 20 so as to be reciprocally slidable left and right, and planting claws 17, which are cranked by a crank mechanism 21, are disposed at the rear of the planting transmission frame 20.

A hitch 24 is provided at a front portion of the planting transmission frame 20 via a rolling fulcrum shaft 23, and the hitch 24 is provided at a rear portion of the traveling vehicle 1 via a lifting link mechanism 27 including a top link 25 and a lower link 26. And an elevating cylinder 28 for driving the elevating link mechanism 27 to elevate and lower is connected to a lift arm connected to the lower link 26. And the front wheel 6.6 and the rear wheel 8.8
At the same time, the seedlings for one plant are taken out from the seedling table 16 which can be reciprocated slidably to the left and right by the planting claws 17 and the seedlings are continuously planted.

A traveling speed change lever 29, a main clutch pedal 32, a planting elevating lever 30, a brake pedal 33, and a planting depth setting lever 31 are disposed on the vehicle body cover 12 on which the driver's seat 13 and the like are installed. In the lower part of the planting part 15, a center float 34 for leveling and a side float 3
5 are provided. The center float 34 is disposed on the left and right center lines of the traveling vehicle 1, and the center float 3
The side floats 35 are disposed at the left-right symmetrical positions of 4, so that the left-right balance of the planting portion 15 is maintained well.

The fuselage frame F includes a main frame 2
And an engine frame 3. The engine frame 3 is disposed in front of and in front of the front wheel 6 in a side view. The engine frame 3 is formed by bending a pipe body in a substantially U-shape in plan view along the front part shape of the traveling vehicle 1 and turning the open side rearward with the main frame 2. Is fixed to a horizontal member 41 fixed to the front end of the first member. A front portion of the engine frame 3 is bent upward to form a bumper portion 3a, and a light 40 is provided on the bumper portion 3a.
Etc. can also be attached. The front ends of two main frames 2 formed of pipes are fixedly provided in the left and right middle portions of the horizontal member 41. The main frames 2 and 2 are arranged in parallel left and right, a rear portion of the main frames 2 and 2 is curved rearward and upward, and a rear end of the main frames 2 and 2 is disposed above the rear wheel 8.

A body cover 12 is mounted on the upper part of the main frames 2. The vehicle body cover 12 is integrally formed of a synthetic resin, and a rear portion of the vehicle body cover 12 is bulged upward to form a driver seat mounting portion 12a. The driver seat 3 is mounted on the driver seat mounting portion 12a. The main frame 2 is supported by a seat frame 9 at the rear of the main frame 2.
In addition, a step portion 1 is provided in front of the driver seat mounting portion 12a.
2b, a bonnet 12e in front of the step portion 12b is formed, and a passage portion 12c is formed on the left and right sides of the bonnet 12e.

The transmission case M extends from the lower front and rear central portions of the fuselage frame F to the rear lower portion of the rear end of the fuselage frame F, and is formed to be long in the front-rear direction. ing. In addition, a transmission 51 is formed with a traveling transmission mechanism inside the transmission case M, and front axle cases 5.5 are fixedly provided on left and right side surfaces of the transmission 51, respectively.
Axle cases 53, 53 from the left and right ends of
The front wheel 6 is fixed to the lower end of the axle case 53.
The axle 54 to which the 6 is fixed is supported. At the rear end of the transmission case M, there are formed cylindrical rear axle cases 7.7 each having an axial center in the left-right direction, and axles 56 are supported in the rear axle cases 7.7. 5
The rear wheels 8.8 are fixed to the left and right ends of the 6.56 so that the conventional transmission case is eliminated. Therefore, front and rear front axle cases 5.5 and rear axle cases 7
And 7 are integrally formed in the same transmission case M,
The transmission case M constitutes a part of a frame member that supports the wheels 6,8.

As shown in FIGS. 1 and 3 and FIG.
0 is projected, power is transmitted to the pulley 61 fixed to the input shaft 60 via the belt 48, and the belt 48 for transmitting the power of the engine E and the transmission case M are arranged substantially linearly, A power transmission path for transmitting power to each wheel 6, 8 has a space-saving and efficient arrangement.

The transmission unit 5 of the transmission case M
1, a PTO shaft 62 as shown in FIG.
The drive of the PTO shaft 62 is transmitted to the planting section 15 via a universal joint.

Next, the support structure of the body frame F mounted on the transmission case M which suspends the wheels 6, 8 will be described. As shown in FIG. 3, in the middle of the main frame 2.2 above the front axle case 5.5, a support bracket 8 is provided below the main frame 2.2.
1. A fixed plate 82 is fixedly mounted on the support bracket 81. The fixed plate 82 is arranged on the front surface of the front axle case 5 and fixed to a boss formed on the upper portion of the front axle case 5. The front part of the body frame F is fixed to the front axle case 5.

A rear connecting frame 85 formed of a pipe is fixedly provided at the rear of the main frames 2. The other end of the rear connecting frame 85 extends to a position near the rear axle case 7 at the lower rear. And is fixed to the side of the rear axle case 7 using the fixing plate 86. Therefore, the rear end of the main frame 2 and the rear end of the transmission case M are connected via the rear connection frame 85,
The body frame F, the transmission case M, and the rear connection frame 85 constitute an integral frame that supports the traveling vehicle 1 having a triangular shape in a side view. The transmission case M has an elongated shape, and as shown in a sectional view of FIG.
It is formed in a tubular shape, and a plurality of ribs 95
Is formed, the section modulus is increased, and a rigid case is formed. Thus, a highly rigid integrated frame for suspending the wheels 6 and 8 is formed.

Next, the support structure of the leveling center float 34 and the side float 35 for holding the planted portion 15 at a constant height will be described. As shown in FIGS. 1 and 2, a fulcrum shaft 100 is provided below the planting transmission frame 20, which is a power transmission unit of the planting unit 15, with left and right side floats 35.
・ It is installed horizontally to fit the width of 35. The fulcrum shaft 10
Are protruded toward the rear of each of the floats 34 and 35 below and below the proper position of the float 0, and are pivotally supported on the rear of each of the floats 34 and 35. Also,
An operation arm 102 projects forward from the fulcrum shaft 100, and a planting depth setting lever 31 projects above the front end of the operation arm 102. Further, an intermediate portion of the planting depth setting lever 31 passes through a cover 99 fixed to the upper support frame 98 shown in FIG. 2, and is engaged with a latch formed on the cover 99. . Therefore,
When the planting depth setting lever 31 is operated, the rear ends of the support arms 101 move vertically around the fulcrum shaft 100, and the vertical distance between each of the floats 34 and 35 and the fulcrum shaft 100 is adjusted. The height of the attachment portion 15 is moved up and down, and the seedlings cut by the planting claws 17 are planted at a certain depth.

Next, the power transmission configuration of the planting section 15 will be described. As shown in FIGS. 6 to 9, in this embodiment, the planting portion 15 is used for four-row planting, and four planting claws 1 are used.
7.17.17.17. A transmission pipe 110 for transmitting a driving force to two of the planting claws 17.
· Two transmission pipes 110 · 1
The front portion is connected by a connecting pipe 111 to form a portal-type planting transmission frame 20 in plan view, with the open side of the portal facing rearward, and planting claws 17 on the left and right sides of the left and right open side ends.
・ 17 are arranged. A transmission shaft is supported inside the transmission pipe 110 and the connection pipe 111.

As shown in FIGS. 6 and 7, the transmission pipe 110 and the connection pipe 111 of the planting transmission frame 20 are formed as rod-shaped pipes. They are connected by a T-shaped pipe 112 which is T-shaped in a plan view. The T-shaped pipe 112
It is formed by a horizontal pipe 112a and a vertical pipe 112b. That is, a T-shaped pipe 112 is connected to the front and rear ends of the transmission pipe 110, and one side (the right side in the present embodiment) of the T-shaped pipe 112 disposed at the front part is a horizontal pipe 112a.
Are arranged in the front-rear direction, the front part of the transmission pipe 110 is inserted into the horizontal pipe 112a, and one side of the connecting pipe 111 is inserted into the vertical pipe 112b. The T-pipe 112 on the other side (left side) of the T-pipe 112 arranged at the front is
The axis of the horizontal pipe 112a is aligned with the axis of the connecting pipe 111, the connecting pipe 111 is inserted into the horizontal pipe 112a, and the front part of the left transmission pipe 110 is inserted into the vertical pipe 112b. Also, a T-shaped pipe 1
12 ・ 112 is a horizontal pipe 112a of the T-shaped pipe 112
Are arranged in the left-right direction to transmit power to the crank mechanism 21 arranged on both sides of the horizontal pipe 112a.

Further, the planting transmission frame 20 includes:
A support for supporting the drive case 108, the crank mechanism 21, and the upper support frame 98 is fixedly provided. That is, a crank support arm 113 projects rearward and upward from a rear portion of the T-shaped pipe 112 disposed at a rear portion of the transmission pipe 110. T-type pipe 1 placed in front of left transmission pipe 110
12, a case support arm 114 protrudes forward and upward, and a horizontal shaft support arm 115 protrudes parallel to the case support arm 114 forward and upward from the right front part of the connection pipe 111. The cylindrical body 11 in which the rolling fulcrum shaft 23 is fitted forward from the left and right central portions of the connecting pipe 111.
7 is fixedly provided. The planting transmission frame 2
T-pipe 112 ・ 11 arranged at the front, which is the front of 0
At the front, brackets 116 to which the upper support frame 98 is fixed are fixed to the front part. Therefore, the crank mechanism 21, the drive case 108, and the support portion of the transverse feed shaft 109 are firmly fixed to the planting transmission frame 20 which has a simple configuration in which the pipe bodies are connected and has a sufficient space,
A durable support portion is formed that is resistant to vibration and impact.

As shown in FIG. 6, the crank support arm 113 has a rear portion branched in two directions and a pivotal support portion 113a.
A pivotal portion 1 having a substantially Y-shape in plan view on which 113a is formed;
Pins for pivotally supporting the arm base of the crank mechanism 21 are fixedly provided at the rear portions 13a and 113a. Further, between the left and right pivot portions 113a, 113a, a portal-type reinforcing body 107 is provided in a plan view.
Thus, the crank mechanisms 21 can be firmly pivotally supported.

The cylindrical body 117 is fixed to the left and right central positions of the planting transmission frame 20 so as to stabilize the center of gravity, and as shown in FIG. The central portion of the connecting pipe 111 is fitted, the open end of the solid body 118 is fixed to the front upper side, and a cylindrical body 117 having an axial center in the front-rear direction above the solid body 118.
Are fixed, a reinforcing member 119 is fixed between the lower part of the front part of the cylindrical body 117 and the lower part of the solid body 118, and the cylindrical body 117 is firmly fixed on the upper part of the left and right central part of the connecting pipe 111. Therefore, the rolling fulcrum shaft 23 is firmly fixed, and the planting portion 15 can be stably rolled.

As shown in FIGS. 8 and 9, the drive case 10 is provided on each support portion of the planting transmission frame 20.
8 and the like are fixed. On both left and right sides of the rear end of the crank support arm 113, link bases of the crank mechanism 21 are pivotally supported, respectively.
2 and a crank mechanism 21
Is fixed, and the planting claws 17 are caused to crank. The planting transmission frame 2
An upper support frame 98 that bends the pipe body into a gate shape is disposed at the front part, and left and right open ends of the upper support frame 98 are screwed to the front parts of the brackets 116, 116, respectively. The upper support frame 98 passes in front of a transverse feed shaft 109 described later and extends upward. The guide rail 19 described above is supported using the upper portion of the upper support frame 98, and the planting transmission frame 20 and the upper support frame 98 are supported.
Are integrally connected to each other to form a highly rigid frame that supports the planting portion 15.

A drive case 108 is fixed to the outer side surface of the case support arm 114, and a lateral feed shaft 109 is pivotally supported at the front of the case support arm 114 and the front of the horizontal shaft support arm 115. The left end of the feed shaft 109 is inserted into the drive case 108. The lateral feed shaft 109 is disposed in parallel with the connecting pipe 111, and the lateral feed shaft 109 is disposed above the rolling fulcrum shaft 23 in a side view, so that the support structure of the lateral feed shaft 109 is simple, and the efficiency is improved. Has a good arrangement configuration.

A transmission shaft is supported inside the planting transmission frame 20, as shown in FIGS. An input shaft 120 is supported on the right transmission pipe 110, a transmission shaft 122 is supported on the left transmission pipe 110, a transmission 121 is supported on the connecting pipe 111, and a T at the rear of the left and right transmission pipes 110. Drive shafts 123 are supported on the mold pipe 112.

The input shaft 120 is connected to the front T-shaped pipe 1.
12 protrudes forward from the horizontal pipe 112a, and one end of the universal joint shaft is connected to the PTO shaft 6 described above.
2 is transmitted. A bevel gear 124 is fixedly provided at the rear end of the input shaft 120, and meshes with a bevel gear 125 which is fixedly provided in the middle of the drive shaft 123 to drive the drive shaft 123. A bevel gear 127 is provided at the front of the input shaft.
Are fixedly engaged with a bevel gear 126 fixedly attached to the end of the transmission shaft 121 of the connection pipe 111 to transmit power to the transmission shaft 121. A bevel gear 128 is fixedly mounted on the left side of the transmission shaft 121, meshed with a bevel gear 129 fixedly mounted on the front part of the transmission shaft 122 in the left transmission pipe 110, the transmission shaft 122 is transmitted, and fixed to the end of the transmission shaft 122. Drive shaft 123 via bevel gear 130 and bevel gear 131
Is driven to drive the crank mechanism 21 arranged on the rear side of the transmission pipes 100, 100, and rotate the planting claws 17 along a locus shown in FIG. 9 to plant seedlings.

Next, a description will be given of an assembling and removing structure of a transmission shaft arranged in the planting transmission frame 20. The input shaft 120 in the transmission pipe 110 and the drive shaft 123 in the T-shaped pipe 112 are inserted and removed by removing the bearing. The transmission shaft 12 in the connecting pipe 111
1 is inserted and removed by removing the transmission case 108.
As shown in FIG. 10, the transmission shaft 122 in the left transmission pipe 110 is connected to the T-shaped pipe 112 at the rear of the transmission pipe 110.
The drive shaft 123 inside the connection pipe 111 is removed and the transmission shaft 121 in the connection pipe 111 is removed, and the bevel gears 129 and 130 fixed to the transmission shaft 122 are connected to the T-shaped pipe 112.
T-shaped pipe 11 taken out from 112 and fixed in front
An extraction hole 112c is opened in the front surface of 2, and the transmission shaft 122 is extracted from the extraction hole 112c.

Next, power transmission to the seedling table driving mechanism such as the horizontal feed shaft 109 will be described. The connecting pipe 1
The left end of the transmission shaft 121 inside the projection 11 projects laterally from the T-shaped pipe 112, is inserted into the drive case 108, and the sprocket 133 is fixed to the end. A sprocket 134 is also fixed to the left end of the traverse shaft 109 inserted into the drive case 108, and a chain (not shown) is wound between the sprocket 134 and the sprocket 133 to supply power to the traverse shaft 109. A seedling table drive mechanism for transmitting is configured. A groove 109a for sliding a slide is formed in the lateral feed shaft 109, and a slide receiver 137 is loosely fitted on the outer peripheral surface of the transverse feed shaft 109, and is provided in the slide receiver 137. Sliding child 138 is in groove 10
9a, the sliding element 138 slides in the groove 109a with the rotation of the transverse feed shaft 109, and the sliding element receiver 13
7 reciprocates left and right on the horizontal feed shaft 109. At the rear of the sliding child receiver 137, the seedling mounting table 16
Are connected, and the seedling table 16 is
Is reciprocated right and left.

The right end of the transverse feed shaft 109 is
The vertical feed cam 139 protrudes rightward from the horizontal shaft support arm 115 and overlaps with the input shaft 120 as shown in a plan view in FIG. 8 and above the input shaft 120 as shown in a side view in FIG. The conventional vertical feed shaft for driving the vertical feed cam 139 is eliminated, and the horizontal feed shaft 109 is also used as a vertical feed shaft. The vertical feed cam 139 is disposed so as to be in contact with the driven cams 140 shown in FIG. 11 below the seedling mounting table 16, and is configured to drive the vertical feed roller 141 intermittently. The driven cams 140 are provided with two protrusions on the left and right, and the distance between the driven cams 140 is equal to the moving distance by the lateral feed.
6, the vertical feed cam 13
9 and the one-side driven cam 140 (140) are brought into contact with each other, the vertical feed belt 141 is driven, and the seedling mat is fed vertically.

[0030]

As described above, the present invention has the following advantages. That is, as described in claim 1, the planting transmission frame for transmitting the driving force to each planting claw is integrally formed into a portal type in plan view, so that the frame can be easily manufactured in a factory and the cost can be reduced. Can be. By disposing two planting claws at the left and right open ends of the gate, respectively, it is possible to cope with four-row planting, and an efficient and simple transmission frame is formed.

Further, since the planting transmission frame is constituted by a pipe body capable of supporting the transmission shaft inside, the complicated work of manufacturing a special case by aluminum die casting or the like is eliminated. The manufacturing is easy, and the manufacturing cost can be greatly reduced. Also, the pipe body can keep high rigidity and at the same time light weight, the planting transmission frame is lighter, the gravity of the whole planting part can be reduced,
The load on the body frame of the lifting link mechanism and the traveling vehicle can be reduced.

According to the third aspect of the present invention, the shape of the planting transmission frame is simple, and an upper support frame formed of a pipe can be easily fixed to the front of the planting transmission frame. The assembly work is easy, and the manufacturing cost can be reduced. In addition, the upper support frame is also formed of a pipe body, and if it is integrally fixed to the planting transmission frame, a highly rigid and lightweight supporting frame of the planting part is configured, reducing the gravity of the whole planting part. Thus, the load on the body frame of the lifting link mechanism and the traveling vehicle can be reduced.

The planting portion having the planting transmission frame which is light in weight is held by a float having a stable arrangement in the left-right direction, so that the left-right balance of the planting portion is maintained. The planting portion is kept in a stable planting posture without collapse, and accurate planting work is performed.

According to a fifth aspect of the present invention, a planting depth setting lever for adjusting a planting depth of a seedling is provided at a planting portion having a planting transmission frame configured to be lightweight, so that manual operating force is reduced. It becomes lighter, can be easily adjusted by an operator in the traveling vehicle, and can be configured to have excellent operability.

[Brief description of the drawings]

FIG. 1 is an overall side view of a small riding rice transplanter having an airframe of a pipe body.

FIG. 2 is a partial plan view of the same overall plan view.

FIG. 3 is a side sectional view showing a front upper portion of the small riding rice transplanter.

FIG. 4 is a rear sectional view of a transmission case.

FIG. 5 is a side view of a cylindrical body that supports a rolling fulcrum shaft of the planting portion.

FIG. 6 is a plan view, partly in section, showing the planting transmission frame of the present invention.

FIG. 7 is a side view of the same.

FIG. 8 is a plan view, partly in section, showing a power transmission configuration of the planting transmission frame.

FIG. 9 is a side view showing the power transmission configuration.

FIG. 10 is a cross-sectional plan view showing a configuration in which a transmission shaft in a transmission pipe is removed.

FIG. 11 is a perspective view of a seedling table on which a vertical feed belt is arranged.

FIG. 12 is a side sectional view of a transmission case.

[Explanation of symbols]

 F body frame 1 traveling vehicle 6 front wheel 8 rear wheel 15 planting part 17 planting claw 20 planting transmission frame 31 planting depth setting lever 34 center float 35 side float 98 upper support frame 100 fulcrum shaft 41 side member 85 rear connecting frame 94 pivot Support pin

Claims (5)

[Claims] 1. A riding rice transplanter in which a power unit is disposed at a front portion of a body frame, power is transmitted to front and rear wheels, and a planting portion is disposed at a rear portion of the body so as to be movable up and down. A planting part for a small riding rice transplanter, characterized in that a planting transmission frame for transmitting power to the claws is integrally formed into a portal type in plan view, and a pair of left and right planting claws are arranged at both ends on the open side. 2. The planting transmission frame according to claim 1,
A planting section for a small riding rice transplanter, wherein a pipe body for supporting a transmission shaft is connected inside. 3. An opening-side end of a gate-shaped upper support frame is fixed to a front portion of the planting transmission frame according to claim 1, and the planting transmission frame and the upper support frame support the planting portion. A planting part of a small riding rice transplanter characterized by comprising a frame. 4. The planting transmission frame according to claim 1, wherein a center float is arranged below the left and right central portions, side floats are arranged at symmetrical positions about the center float, and the planting posture is stabilized in the planting portion. The planting section of a small riding rice transplanter. 5. A fulcrum shaft for supporting a center float and a side float is provided laterally below the planting transmission frame according to claim 1, and a planting depth setting lever projects forward of the fulcrum shaft to set the planting depth. A planting part of a small riding rice transplanter characterized in that the fulcrum shaft is rotated by operating a lever and the vertical height between the fulcrum shaft and each float can be adjusted.