JP2002272219A - Riding type rice transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a riding type rice transplanter that has a rolling supporter 160 attached to the transplanting frame 20 in no need of linking part that would cause unavoidable weight-up and cost-up. SOLUTION: The rolling supporter 160 for the rice transplanting unit 15 is installed to the transplanting frame 20 (45) that crosses the rolling supporter 160 in the perpendicular direction so that at least a part of the rolling supporter 160 may laps on the transplanting frame 20 (45).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding rice transplanter comprising a traveling vehicle and a planting section.

[0002]

2. Description of the Related Art A planting section of a riding rice transplanter is held horizontally by a rolling control mechanism even if the running vehicle is inclined left and right. The rolling control mechanism is connected to the traveling vehicle so that the planting section can be tilted left and right around a rolling fulcrum axis that is oriented in the front-rear direction (the traveling direction),
The actuator for tilting the planting part left and right is controlled so that the detection value of the sensor that detects the left and right inclination of the planting part is a value when the planting part is not tilted left and right but is horizontal. . In addition, the planting portion connected to the traveling vehicle so that the planting portion can be tilted right and left around the axis of the rolling fulcrum in the front-rear direction (traveling direction) is simply elastically held in a horizontal posture by a rolling correction spring. there were.

A specific structure of a rolling fulcrum of the latter is disclosed in Japanese Patent Application Laid-Open No. 2000-41429. This is a side view portal type bracket that opens the lower surface side at the lower end of the hitch that is attached to the rear of the traveling vehicle via an elevating link mechanism, and holes for inserting the rolling fulcrum shaft are provided on the front and rear surfaces of this bracket. On the other hand, the connecting member extends forward from a portion orthogonal to the rolling fulcrum axis of the planting frame that forms the planting portion by assembling the seedling mounting table and the planting claw while being opened. A sleeve-shaped rolling support member into which the rolling fulcrum shaft is inserted is attached, the rolling support member is fitted inside the bracket, and the bracket and the rolling support member are rolled by aligning the hole position of the bracket with the hole position of the rolling support member. By inserting the fulcrum shaft, the planting section is connected to the traveling vehicle so that it can be tilted to the left and right around the rolling fulcrum shaft pointing in the front-rear direction. And such like.

However, in order to mount the rolling support member at a position distant from the planting frame as described above, a connecting member for connecting the rolling supporting member and the planting frame is required, and the weight is correspondingly increased. In addition to the increase in cost and cost, the rolling support member is attached to the planting frame in a cantilever state by the connecting member, so that the connecting member needs to be strong enough to withstand a large moment applied thereto. , Further increasing the weight and cost.

[0004] Therefore, the rolling support member is attached to the planting frame without using a connecting member that causes an increase in weight and cost as described above.
It is a main object of the present invention to provide a riding rice transplanter with reduced weight and reduced cost.

[0005]

According to a first aspect of the present invention, there is provided a riding rice transplanter according to the first aspect of the present invention, wherein a rolling support member of a planting portion is provided in a direction perpendicular to the rolling support member. The planting frame is provided so that at least a part of the rolling support member wraps with the planting frame in a plan view, and the rolling support member and the planting frame are connected by this characteristic structure. Even if a connecting member becomes necessary, the miniaturization of the connecting member and the reduction of the moment required for the connecting member allow the connecting member to be used lighter and cheaper than the conventional one, and the weight and cost of the riding rice transplanter can be reduced. It is intended to go down.

According to a second aspect of the present invention, there is provided a riding rice transplanter, wherein the rolling support member of the planting portion is provided directly above the planting frame in a direction perpendicular to the rolling support member. Even if this characteristic structure requires a connecting member for connecting the rolling support member and the planting frame, the connecting member can be formed by minimizing the connecting member and almost eliminating the moment applied thereto. An object of the present invention is to make it possible to use a lighter and cheaper one than conventional ones, and to reduce the weight and cost of a riding rice transplanter. That is, the most preferable structure of the characteristic structure of the first aspect is the characteristic structure of the second aspect.

According to a third aspect of the present invention, there is provided a riding rice transplanter, wherein a notch portion is provided along an outer surface of the rolling support member in a planting frame in a direction orthogonal to the rolling support member of the planting portion. The rolling support member is attached to the planting frame by this feature structure, so that the rolling support member can be directly attached to the planting frame by welding means, etc. It is intended to reduce the weight and cost.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter, and FIG. 2 is a plan view of the same. In the drawing, reference numeral 1 denotes a traveling vehicle on which an operator rides. The engine 2 is mounted on a body frame 3 and a longitudinal transmission is provided. A paddy field traveling front wheel 6 is supported in front of the case 4 via a front axle case 5, and a paddy field traveling rear wheel 8 is supported by a rear axle case 7 behind the transmission case 4. A spare seedling mount 10 is mounted on both sides of the hood 9 covering the engine 2 and the like, and the transmission case 4 and the like are covered by a body cover 11 on which the operator rides, and a driver seat 13 is provided on the upper surface of the cab 12 behind the body cover 11. A steering handle 14 is provided in front of the driver's seat 13 and behind the hood 9.

In the figure, reference numeral 15 denotes a seedling mounting table 16 for four-row planting.
And a planting section having a plurality of seedling planting claws 17 and the like.
0 and a rotary case 21 slidably supported in a reciprocating manner and rotated in one direction at a constant speed.
, A pair of claw cases 22 are disposed at symmetrical positions about the rotation axis of the rotary case 21, and the seedling mounting claw 17 is attached to the tip of the claw case 22. Also, the left and right side frames 23 are erected on both left and right sides in front of the planting frame 20 to support the seedling mounting table 16, and the hitch 24 in the front left and right center of the planting frame 20 includes a top link 25 and a lower link 26. Traveling vehicle 1 via lifting link mechanism 27
And the hydraulic lifting cylinder 28 provided on the traveling vehicle 1 is connected to the lower link 26. When the hydraulic lifting cylinder 28 is driven, the planting section 15 is raised and lowered via the lifting link mechanism 27, and the planting section 15 is lowered. At times, the seedlings for one plant are taken out from the seedling table 16 which is reciprocally slid left and right by the seedling mounting claws 17 so that the seedlings are continuously planted.

In the figure, reference numeral 29 denotes a main transmission lever, 30 denotes a seedling connecting lever which enables operations such as stopping running at a position where the aircraft is mounted, as well as from the aircraft, 31 denotes a planting elevating lever, 32 Is a main clutch pedal, 33 is a left and right brake pedal, 34 is a center float for leveling two rows, 3
5 is a left and right side float for leveling one row, 36 is a side row fertilizer for four rows, and 37 is an auxiliary wheel arranged outside the rear wheel 8.

The side-strip fertilizer applicator 36 includes a fertilizer hopper 38 for receiving fertilizer, a fertilizer feeding case 39, and a center float 3
4, a turbo blower-type blower 42 for discharging fertilizer through a flexible-type transfer hose 41 to a side groove device 40 of the side float 35, and a cylindrical air tank 43.
And a blower 42 at the right end of the air tank 43.
And four sets of fertilizer feeding cases 39 for four rows are arranged above the air tank 43, and the upper end of the seedling mounting table 16 is arranged close to the rear side of the fertilizer hopper 38.

As shown in FIGS. 3 to 12, the planting frame 20, which also serves as a transmission case for the planting section 15, is made up of two pipe vertical left and right vertical frames 44a, 44b and front ends of the left and right vertical frames 44a, 44b. And a horizontal frame 45 made of pipes connecting the pipes, and a cross-shaped frame joint (cross joint) 46 formed by bulge processing is connected to each of the vertical frames 44a, 44.
b. It is welded and fixed to the rear end, and the rotary case 21 is rotatably supported on the frame joint 46 via the rotary shaft 47. Cross-shaped frame joints (cross joints) 48a, 48b formed by bulging are connected to the vertical frame. 44a, 4
4b and the horizontal frame 45 are welded and fixed, and the vertical frames 44a, 44b and the horizontal frame 45 are integrally connected in a U-shape in plan view that opens to the rear of the fuselage, thereby forming the lightweight planting frame 20 at low cost.

The planting input shaft 49 projects from the front surface of the right frame joint 48b, which is the right end of the front end of the planting frame 20, and the driving force from the PTO shaft of the transmission case 4 is planted through the universal joint shaft 50. To the input shaft 49,
The planting input shaft 49 is interlocked to the right end of the planting drive shaft 51 inserted into the horizontal frame 45 via bevel gears 49a and 52, and the front end of the planting claw drive shaft 53 inserted into the left and right vertical frames 44a and 44b. The bevel gears 52 and 54 and the safety clutch 55 are connected to the left and right ends of the planting drive shaft 51, and the rear end of the planting claw drive shaft 53 is connected to the rotating shaft 47 via bevel gears 56 a and 56 b and the planting claw unit clutch 57. The seedling-claw 17 is driven by the interlocking connection.

A seedling feed shaft 58 for laterally feeding the seedling table 16 in the left-right direction and vertically feeding the seedlings on the seedling table 16 is connected to a seedling drive shaft 51 via a seedling feed case 59 made of aluminum die cast. And a welding flange 60 provided at the left-side joint end of the left frame joint 48a.
The seedling feed case 59 is bolted and fixed to the flange 61 at one end, and the seedling feed shaft 58 is attached to the other end of the seedling feed case 59.
Is inserted and supported, and a speed change mechanism 64 formed by two sets of switching gears 62 and 63 for high and low speed shift is interposed between the planting drive shaft 51 and the seedling feed shaft 58 in the seedling feed case 59, and the machine body is moved in the left-right direction. The left half of the seedling feed shaft 58 is provided on the seedling vertical feed cam shaft 65 and the right half thereof is provided on the seedling pedestal horizontal feed screw shaft 66 with respect to the approximate center. Stand 1
6 and the vertical feeding of the seedlings on the seedling mounting table 16 are performed.

As shown in FIGS. 10 and 11, a planting depth adjusting fulcrum shaft 67 is rotatably supported below the front end of the planting frame 20, and the center float 34 has a rear end upper surface and left and right side floats 35. The brackets 68, 69 on the rear end upper surface are connected to the planting depth adjusting fulcrum shaft 67 via the planting depth adjusting links 70, 71, and the lifting inclination 72 (the planting angle) is connected to the front end of the center float 34 by the lifting link 72. Of the planting depth adjustment fulcrum shaft 67 is detected.
The reference planting depth is adjusted by the planting depth adjusting lever 73 having the base end fixed.

The left and right ends of the planting depth adjustment fulcrum shaft 67 are L
The left and right side bumpers 74 having a shape are foldably and outwardly protruded through a mounting member 75.

As shown in FIGS. 8, 10, and 11, the base ends of the left and right marker support stays 77 for supporting the left and right muscle markers 76 so as to be freely foldable (undulating) are connected to the frame joints 48a and 48a.
The marker support stay 77 is formed by an L-shaped pipe, and the longitudinal stay portion 77a in the front-rear direction is line-contacted with the substantially same height surface in the longitudinal direction substantially at the center of the frame joints 48a, 48b. The horizontal stay portion 77b faces left and right outward in front of the vertical frames 44a and 44b, and supports the muscle pulling marker 76 on the mounting shaft 78 at the tip of the horizontal stay portion 77b via a marker stand 79 so as to be freely foldable. At the same time, the horizontal stay portion 77b of the left marker support stay 77 is positioned in front of the seedling feeding case 59 to function as a bumper for protecting the seedling feeding case 59.

As shown in FIG. 13, the left and right marker support stays 77 are provided with left and right reinforcing members 80 for attaching the base ends of the left and right side frames 23 to the frame joints 48a, 48b.
The base end of the vertical stay 77a is also welded and fixed to the inner surface of the side member 81 so that the side frame 23 and the marker support stay 7 are fixed.
7 to improve the supporting strength.

As shown in FIG. 14, a seedling removing plate 82 at the lower end of the seedling mounting table 16 is moved up and down to adjust the amount of seedling harvested, and a guide rod 85 is attached to a guide member 84 of the planting frame 20. Up and down freely via the seedling collection control plate 8
An engaging plate 87 for engaging with the hook 86 of the third is provided on the seedling collecting amount adjusting shaft 88 in the left-right direction, and by operating a seedling collecting amount adjusting lever 89 connected to the left end side of the seedling collecting amount adjusting shaft 88, the seedling mounting claw is provided. 17 adjusts the amount of seedling for one plant to be taken out. The bearing plate 90 fixed to the seedling sending case 59 and the right reinforcing member 81 are turned around the left and right ends of the horizontal shaft portion 88a of the seedling collecting amount adjustment shaft 88. It is movably supported, and a horizontal shaft portion 88a is provided outside the seedling feeding case 59.
Is bent forward by approximately 90 degrees to form a longitudinal axis portion 88b in the front-rear direction.
b is bent inward at approximately 90 degrees inward, and the lever mounting portion 8 is bent.
8c, the base end of the L-shaped seedling collecting amount adjusting lever 89 is fixed to the lever mounting portion 88c with two bolts 91, and the tip of the seedling collecting amount adjusting lever 89 is inclined obliquely upward and forward through a lever guide 92. The left rear wheel 8 and its auxiliary wheel 37 are extended.
A bumper which is provided so as to face the middle and protects the seedling feeding case 59 by surrounding the seedling feeding case 59 with a horizontal axis portion 88a, a vertical axis portion 88b, and a lever mounting portion 88c at the left end of the seedling collecting amount adjusting shaft 88. In addition, the transfer hose 41 of the leftmost planting streak is positioned in the gap 93 between the seedling sending case 59 and the seedling collection amount adjusting shaft 88.

The hitch 24 has upper and lower link shafts 94 and 95 for connecting the top link 25 and the lower link 26, and a sleeve-like rolling support member 160 provided substantially at the center of the horizontal frame 45 of the planting frame 20 is connected to the lower end of the hitch 24. And a hydraulic rolling cylinder 99 is mounted on a mounting seat 98 at an upper end of the hitch 24, and a front end of a piston rod 100 of the hydraulic rolling cylinder 99 is fixed to a fixing bracket 101 at an upper end of the right side frame 23. Gear pump 102 for reciprocatingly driving a double-acting hydraulic rolling cylinder 99
Reversible electric motor 1 for driving gear pump 102 forward and reverse
03 and the oil tank 104 with the hydraulic rolling cylinder 9
9 and a receiving plate 10 fixed to the upper surface of the mounting seat 98
A rolling correction spring 106 is stretched between the left and right brackets 5 on the rear side of the seedling mounting table 16, and a pendulum-type rolling sensor 108 provided on a sensor table 107 of the horizontal frame 45 on the left side of the hitch 24 is attached to the planting section 15. When detecting the left and right inclination of the piston rod 1 of the hydraulic rolling cylinder 99,
00 is controlled so as to swing the planting section 15 left and right around the rolling fulcrum shaft 97 so that the planting section 15 is held horizontally.

A horizontal frame 45 is provided on the right side of the hitch 24.
The seedling feed shaft support member 109 to be welded and fixed is provided, and the seedling feed shaft support member 109 and the fixing bracket 101 at the upper end of the right side frame 23 are reinforced and connected by an oblique stay 110, and the lightest structure is used for the right side. Frame 2
By improving the rigidity of No. 3, the rolling performance of the planting portion 15 is ensured.

Further, the seedling feed shaft support member 109 rotatably supports a substantially middle portion of the seedling feed shaft 58, and is provided between the bearing plate 111 fixed to the right marker support stay 77 and the seedling feed shaft support member 109. Both ends of the seedling lateral feed screw shaft 66 are supported via the bearing 112, and the right end of the seedling vertical feed cam shaft 65 is connected to the left end of the seedling lateral feed screw shaft 66 via the shaft coupling 113.
Also, the left end of the seedling vertical feed cam shaft 65 is connected and supported to the seedling feed case 59, respectively, and the seedling vertical feed cam shaft 65 and the seedling stand horizontal feed screw shaft 66 formed by dividing the seedling feed shaft 58 into right and left.
To improve the support strength by connecting the right end of the seedling vertical feed cam shaft 65 to the seedling stand horizontal feed screw shaft 66 with the same axis to improve the vertical seedling feed accuracy. The seedling vertical feed cam shaft 65 is formed of an iron hollow pipe, and the seedling stand horizontal feed screw shaft 66 is formed of a solid iron material. The seedling stand lateral feed screw shaft 66 having a large weight is distributed and arranged on the right side from the left and right center of the plant to balance the left and right of the planting portion 15.

Further, the slider 1 is attached to the seedling lateral feed screw shaft 66.
14 is screw-connected, and the slider 114 is connected to the seedling mounting table 16 through the slider receiver 115, so that the seedling horizontal feed screw shaft 6
6, the seedling table 16 is reciprocated right and left while rotating in one direction.
When the seedling table 16 moves to the left and right moving end,
The vertical feed cam 116 is brought into contact with the driven cam 117, and the vertical feed roller shaft 119 is rotated in one direction via a one-way clutch 118, so that a pair of upper and lower vertical feed roller shafts 119, 120 vertical feed rollers 121,1
The vertical feed belt 123 wound between the two is moved toward the lower end by one seedling.

As shown in FIGS. 15 to 17, the frame joint 48a for connecting the seedling feeding case 59 is provided with a welding flange 60 for mounting and fixing the seedling feeding case 59 at the left-side joint end of the frame joint 48a. Flange 60
A spigot fitting portion 124 that fits into the joining end portion of the frame joint 48a that protrudes by a certain length is provided on the inner surface of one side of the seedling feeding case 59, and a tapered surface 125 is formed at the outer end of the spigot fitting portion 124. , An O-ring 126 is interposed between the tapered surface 125 and the frame joint 48a to easily maintain airtightness between the frame joint 48a and the seedling feed case 59 when the welding flange 60 and the flange 61 are fastened by the bolt 127 with a simple configuration and at low cost. Done by

The seedling feed case 59 is provided with a speed change shaft 128 separate from the planting drive shaft 51, a spline hole 129 is formed inside the bevel gear 52, and the spline hole 129 is shifted to the left end of the planting drive shaft 51. The transmission shaft 128 is integrally connected to the planting drive shaft 51 by fitting the right end of the shaft 128 so that the transmission shaft 128 can be easily detached integrally when the seedling feed case 59 is removed.

The frame joint 48a and the bevel gear 5
With the bearing 130 interposed between the two, the frame joint 48
a, the bevel gear 52 is rotatably supported inside the left facing joint end of the frame joint 48a, and the welding flange 60 is welded and fixed to the outer peripheral surface of the joint end of the frame joint 48a outside the position of the bearing 130. The inner diameter b of the mounting portion of the welding flange 60 is formed to be larger (a <b) than the inner diameter a of the fitting portion of the bearing 130 at the joint end.
Even if the joint end of the seedling feeding case 59 is slightly deformed, the assembly of the bearing 130 is not adversely affected.

Further, the seedling sending case 59 includes a vertical case portion 5.
A transmission mechanism 64 formed in an L-shape having a horizontal case portion 59b, a flange 61 at the right end of the horizontal case portion 59b, and switching gears 62 and 63 formed in the vertical case portion 59a. The speed changeover mechanism 131 is incorporated in the speed change gear 59b. The changeover gears 62 and 63 include drive side gears 62a and 63a that idlely support the speed change shaft 128 and the seedling vertical feed camshaft 6.
5 The driven gears 62b and 63b are connected and fixed to the left end, and the transmission changeover mechanism 131 is embedded in the key groove 132 of the transmission shaft 128 and the front end is driven by the seat spring 133 to generate the key groove 134 of the driving gears 62a and 63a. And a switching lever 138 connected to the shift key 135 via a shift ring 136 and a shifter 137, and the left end operating portion 138a of the switching lever 138 is moved to the left outside of the seedling feeding case 59. And the switching speed of the seedling feed speed between the high and low speeds is performed by pushing and pulling the switching lever 138 in the left and right direction.

The switching gears 62 and 63 are provided with a shift key 1
The drive-side gears 62a and 63a on the side engaged with 35 are formed of a metal material such as iron, and the other driven-side gears 62b and 63b are formed of a resin material to improve both weight reduction and durability.

As shown in FIGS. 18 and 19, the planting frame 20 has bevel gears 49a, 52 and 54 compactly incorporated in the front frame joints 48a and 48b.
The bevel gear 56 is compactly attached to the rear frame joint 46.
In order to simplify the structure and reduce the cost by incorporating the a and 56b and the planting claw unit clutch 57, the planting claw unit clutch 57 has a fixed clutch portion 139 attached to the bevel gear 56b that is idlely supported on the rotating shaft 47. A movable clutch portion 141 is formed on a sliding member 140 which is spline-fitted to the rotating shaft 47 so as to be slidable left and right, and the fixed clutch portion 139 and the movable clutch portion 141 are normally pressed by pressing the sliding member 140 with a clutch spring 142. The sliding member 140 is connected (clutched) and the clutch 140
A clutch operating member 143 that retreats against the force is provided at the frame joint 46 so as to be able to advance and retreat, and the clutch operating member 14
3 is connected via a lever 144 or the like to a unit clutch lever (not shown) disposed on the back side of the seedling mounting table 16 or the like, and the planting claw unit clutch 57 is turned on and off by operating this clutch lever.

As shown in FIGS. 20 (1) and (2), the side bumper 74 is attached to a U-shaped mounting member 75 fixed to both ends of the planting depth adjusting fulcrum shaft 67 in a side view.
a is vertically movably inserted, and a compression spring 146 is interposed between the mounting member 75 and the spring seat 145 of the bumper bent vertical portion 74 a that projects downward from the mounting member 75.
An L-shaped position regulating plate 147 to be brought into contact with the left end surface and the front surface of the attaching member 75 is fixed to the bumper bent vertical portion 74a, and a stopper 148 for preventing the position regulating plate 147 from rotating backward is attached to the attaching member 75. And the position regulating plate 147
At the contact position between the mounting member 75 and the left end face, the bumper bent horizontal portion 74b is made to protrude in the extension direction of the planting depth adjustment fulcrum shaft 67 to protect the seedling extraction plate 82 and the like, while the compression spring 146 When the side bumper 74 is pulled upward and the bumper bent horizontal portion 74b is rotated approximately 90 degrees forward, the body width is reduced at the bumper storage position where the position regulating plate 147 and the front surface of the mounting member 75 are brought into contact. Easy loading of light trucks on the loading platform and storage in the garage.

The internal transmission mechanism of the seedling feed case 59 has a two-axis configuration including a seedling vertical feed cam shaft 65 and a speed change shaft 128. The two sets of switching gears 62 and 63 and the simple shift mechanism 64 and shift change mechanism 131 of the shift key 135 are provided. Is formed in the seedling sending case 59, so that the mold allowance is reduced, the cost is reduced, the size of the seedling sending case 59 is reduced, and the seedling sending case 59 is fixed to the case body side of the seedling sending case 59 via the bolt 149. The case cover 150 is detached, the switching gears 62 and 63 are exchanged, and the internal transmission mechanism is easily inspected, thereby improving the maintainability.

The lateral case portion 59 of the seedling feed case 59
b is a long shape, the vertical case portion 59a and the flange portion 61
When the tools are used for removing and attaching the bolts 127 by increasing the distance between them, the tools are easily inserted to the bolt 127 position to easily attach and detach the seedling feeding case 59. And improve maintainability.

In addition to the weight reduction and cost reduction of the riding rice transplanter by the configuration of each part in the above-described transplanting section 15, the configuration of the rolling fulcrum of the transplanting section 15 which is the gist of the present invention is also used. The structure of the rolling fulcrum will be described in detail below with reference to FIGS. 21 to 28 in order to reduce the weight and cost.

A vertically long hitch 24 is connected to the rear of the traveling vehicle 1 via a lifting link mechanism 27 on the left-right center line of the vehicle or substantially on the right-left center line of the vehicle. At the front part of the planting frame 20 which forms the planting part 15 by assembling the seedling mounting table 16 and the seedling planting claws 17 with a horizontal axis or a substantially horizontal axis having a circular cross-section facing the In addition, the left and right central portions or the left and right substantially central portions of the horizontal frame 45, which are the left and right central portions or the left and right substantially central portions of the planting frame 20 in the direction orthogonal to the rolling fulcrum shaft 97, are rotatably pivoted around the rolling fulcrum shaft 97. Support, and left and right rolling correction springs 10
6, the planting portion 15 is elastically held in a horizontal posture or a substantially horizontal posture, and the planting portion 15 is connected to the traveling vehicle 1 so that the planting portion 15 can be tilted right and left around the rolling fulcrum shaft 15. An actuator that tilts the planting section 15 left and right so that the value detected by the rolling sensor 108 that detects the left and right inclination of the plant 15 is horizontal when the planting section 15 is not tilted left and right, that is, hydraulic rolling. By controlling the operation of the cylinder 99, the planting section 15 can be held horizontally or substantially horizontally even when the traveling vehicle 1 is inclined left and right. That is, the rolling control is performed.

The hitch 24 is vertically long and has a tapered shape in which the lower portion is widened in a side view. The cross section of the hitch 24 is formed in a U-shape in which the open portion faces rearward in a plan view. A rolling fulcrum shaft support 151 on the side of the hitch 24 is provided at the lower end of the hitch 24. The rolling fulcrum shaft support 151 on the side of the hitch 24 is
4. A bracket 152 having a gate shape in a side view with the opening facing downward is fixed by welding between the left and right side walls of the lower end, and the left and right sides are closed at the lower end of the hitch 24 by the left and right side walls of the hitch 24. A front and rear surface is closed by the bracket 152 to form a joint space 153 with the planting portion 15 whose only the lower surface is open, and the rolling fulcrum shaft 97 is perpendicular to the front and rear surface of the bracket 152 which is the front and rear surface of the joint space 153. A short front and rear boss (sleeve) 154 and 155 having a cylindrical shaft hole through which the front boss 154 passes is inserted through the front wall of the hitch 24, and the front end is hitch 24. , The front end of the front boss 154 is welded and fixed to the front wall of the hitch 24, and the middle part of the rear boss 155 is welded and fixed to the rear surface of the bracket 152, Is protruded ends of the front and rear bosses 154 and 155 from the front and rear surfaces in the inside of the case space 153, hitch 2
4, the rolling fulcrum shaft 97 is attached to the front boss 15 from the front.
4. Next, the hitch 2 is inserted into the rear boss 155 and the rolling fulcrum shaft 97 is passed through the joining space 153.
4 to be inserted and supported.

A stopper plate 156 is welded and fixed to the end opposite to the insertion start end of the rolling fulcrum shaft 97, and the rolling fulcrum shaft 97 is attached to the front boss 1 from the front of the hitch 24.
54, and then inserted into the rear boss 155 to insert and support the rolling fulcrum shaft 97 through the lower end of the hitch 24 with the rolling fulcrum shaft 97 penetrating the joining space 153.
Abuts against the front wall of the hitch 24 and the rolling fulcrum shaft 97
And the stopper plate 156 is fastened and fixed to the front wall of the hitch 24 via a bolt 157 and a nut 158 to prevent the rolling fulcrum shaft 97 from being pulled out and prevented from rotating.

On the other hand, a rolling fulcrum pivot 159 on the side of the planting section 15 is provided at the front of the planting frame 20 which forms the planting section 15 by assembling the seedling mounting table 16 and the seedling planting claws 17. In addition, it is provided at the left and right central portions or the left and right substantially central portions of the horizontal frame 45 which is the left and right central portions or the left and right substantially central portions of the planting frame 20 in the direction orthogonal to the rolling fulcrum shaft 97.
The rolling fulcrum shaft pivot 159 on the planting portion 15 side
Intermediate boss (sleeve) 160 serving as a rolling support member
And a connecting member for integrally connecting the intermediate boss 160 to the left and right central portions or substantially the left and right central portions of the horizontal frame 45 such that a part of the intermediate boss 160 wraps at least with the horizontal frame 45 in plan view. The hitch table 161 is formed.

The intermediate boss 160 is provided between the front and rear bosses 1 of the joint space 153 of the rolling fulcrum shaft pivot 151 on the hitch 24 side.
It has a cylindrical shaft hole formed between 54 and 155 so as to be fitted in series in the front-rear direction and through which the rolling fulcrum shaft 97 is inserted.

The hitch table 161 holds the intermediate boss 160 in contact with the right and left central portions or right above right and left substantially central portions of the horizontal frame 45 which is the planting frame 20 in a direction orthogonal to the intermediate boss 160, and The intermediate boss 160 and the horizontal frame 45 intersect at a right angle in a plan view, and are connected to the horizontal frame 45 at a plurality of positions in a horizontal or substantially horizontal posture in the front-rear direction.

That is, the hitch table 161 has at least a plurality of front and rear connection surfaces 162 and 163 which are a plurality of vertical connection surfaces facing each other in the longitudinal direction of the fuselage, and is provided from the front outer surface and the rear outer surface of the horizontal frame 45. , 163 is vertically set up, and the lower part of the front and rear connecting surfaces 162, 163 is
5 in the longitudinal direction of the vehicle with the front and rear connecting surface 16 therebetween.
2, 163 are opposed to each other in the longitudinal direction of the fuselage above the horizontal frame 45. The front and rear connection surfaces 162 and 163
The lower part sandwiching the horizontal frame 45 can be formed wider than the horizontal width of the hitch 24, and the upper part protruding above the horizontal frame 45 can be fitted into the joining space 153 of the rolling fulcrum shaft pivot 151 on the hitch 24 side. , And intermediate boss 1
60 are formed to have a width and height that can penetrate the lower frame, and lower portions of the front and rear connection surfaces 162 and 163 are formed as lower fixing portions 162a and 163a that are welded and fixed to the horizontal frame 45. An upper portion of the front and rear connection surfaces 162 and 163 is an intermediate boss. 160 are welded and fixed to the upper fixing portions 162b and 163b, and the narrow upper fixing portions 162b and 163b are replaced with the wide lower fixing portions 16b.
2a and 163a are integrally extended from the left and right intermediate portions, and the left and right side portions of the lower fixing portions 162a and 163a are connected to the upper fixing portion 162.
b, 163b, the lower fixing portion 162
a, 163a and upper fixing portions 162b, 163b are formed at upper and lower left and right sides of an intermediate portion of the front and rear connecting surfaces 162, 163, respectively, and the upward end surfaces 162c, 163c are formed on the outer peripheral surface of the horizontal frame 45. It is formed in accordance with the height of the highest part (the height of one upper point of two points where a vertical line passing through the axis of the horizontal frame 45 and the outer peripheral surface of the horizontal frame 45 intersect). And the horizontal frame 45
The intermediate boss 160 is passed through the upper fixing portions 162b and 163b of the front and rear connection surfaces 162 and 163 projecting upward at a right angle while the bottom surface of the intermediate boss 160 is in contact with the horizontal frame 45. The front and rear portions are fixed at the upper portions 162b and 163b of the front and rear connection surfaces 162 and 163.
And the contact portion of the intermediate portion of the intermediate boss 160 with the horizontal frame 45 is welded and fixed to the horizontal frame 45, and the intermediate boss 160 becomes the planting frame 20 in a direction orthogonal to the intermediate boss 160. 45 in a horizontal or substantially horizontal position in the front-rear direction such that the intermediate boss 160 and the horizontal frame 45 intersect at right angles in the right and left central portions or the substantially right and left central portions of the 45 in plan view. It is connected to the frame 45 at a plurality of places (three places).

The front and rear connecting surfaces 162 and 163 are formed integrally by bending a single flat iron plate according to the cross-sectional shape of the horizontal frame 45 as shown in the figure. That is, one flat iron plate is bent into a U-shape at the same curvature as the outer peripheral surface of the horizontal frame 45 having a circular cross section to form the hitch table 161 in a U-shape in a side view, and the U-shaped hitch table 161 in a side view. The opposite front and rear surfaces are front and rear connection surfaces 162 and 163. Then, the U-shaped hitch table 161 in side view is attached to the horizontal frame 4.
5 from below, and attaches the horizontal frame 45 to the hitch table 16.
The hitch table 161 is held and fixed to the horizontal frame 45 while being held and held by the bottom of
5, the contact edge of the hitch table 161 to the outer peripheral surface is welded and fixed to the horizontal frame 45, and the front and rear connection surfaces 162 and 163 are vertically raised from the front outer surface and the rear outer surface of the horizontal frame 45 as described above. 162 and 163 are opposed to each other in the longitudinal direction of the fuselage with the horizontal frame 45 interposed therebetween.
The upper portions 62 and 163 are opposed to each other in the longitudinal direction of the fuselage above the horizontal frame 45.

Although the front and rear connecting surfaces 162 and 163 may be formed separately, as described above, the hitch table 161 is formed by a holding member having the horizontal frame 45 and holding the hitch table 161 therebetween. By integrally forming the front and rear connection surfaces 162 and 163 for connecting the boss 160 at a plurality of locations, the front and rear connection surfaces 162 and 163 can be formed and compared with the case where the front and rear connection surfaces 162 and 163 are formed separately. It is easy to assemble, has little product dimensional error of the front and rear connecting surfaces 162, 163 and assembly dimensional error, is excellent in accuracy, and has a large welding area between the front and rear connecting surfaces 162, 163 and the horizontal frame 45, so that high joining is achieved. The strength of the hitch table 161 as a holding member is improved because the strength can be easily obtained, and a high joining strength between the horizontal frame 45 and the intermediate boss 160 can be obtained. The opening portion when fitted around arm 45,
Later, it is closed by the intermediate boss 160, and the intermediate boss 160 and the front and rear connection surfaces 162 and 163 are synergistically
And the rolling fulcrum shaft pivot 159 on the planting portion 15 side is completely integrated with the horizontal frame 45 to increase the strength. For this reason, the intermediate boss 160 constituting the rolling fulcrum shaft pivot 159 on the planting portion 15 side.
Even if the hitch base 161 itself is not so strong in strength, the rolling fulcrum shaft pivot 15 on the planting part 15 side can be used.
9 can secure the necessary strength, which contributes to weight reduction and cost reduction.

Further, a hole 164 is provided in the contact surface of the U-shaped hitch table 161 with the horizontal frame 45 so that the horizontal frame 4
5, while increasing the welding area, that is, increasing the joining strength, and at the same time, reducing the weight. Expansion of the welding area of the hitch table 161 with the horizontal frame 45, that is, enhancement of the bonding strength, can also be performed by forming irregularities on the edge of the contact surface portion with the horizontal frame 45 as is clear from the drawing.

Seedling feed shaft support member 109 and hitch table 161
Of the seedling feed shaft support member 1
09 and the hitch base 161 serve as reinforcing members, so that the strength of the hitch base 161 is further increased to further reduce the weight and cost, and furthermore, the seedling feed shaft support member 1
09 to reduce weight and cost by increasing strength.

The planting portion 15 formed as described above
Boss 1 at the side rolling fulcrum shaft pivot 159
60 and upper fixing portion 162 between front and rear connecting surfaces 162 and 163
b, 163b, from above, the joint space 153 of the rolling fulcrum shaft pivotal support 151 on the hitch 24 side formed as described above is externally fitted, and the intermediate boss 160 and the upper fixing portion of the front and rear connecting surfaces 162, 163 are fitted into the joint space 153. 162b, 16
3b, and an intermediate boss 160 between front and rear bosses 154, 155.
55 are arranged in series in the longitudinal direction of the fuselage, and each boss 15
The rolling fulcrum shaft 97 is inserted from the front of the hitch 24 into the front boss 154, then into the intermediate boss 160, and finally into the rear boss 155, and the stopper plate 156 is inserted into the hitch 24 from the front of the hitch 24. The rolling fulcrum shaft 97 is inserted into the front wall of the hitch 24 via bolts 157 and nuts 158 to prevent the rolling fulcrum shaft 97 from being inserted. And the planting portion 15 is pivotally connected to the lower end of the hitch 24 via a rolling fulcrum shaft 97, and the traveling vehicle 1 is tilted to the left and right around the rolling fulcrum shaft 15. connect.

Further, a plurality of interference portions for preventing the planting portion 15 from inclining beyond a certain range with respect to the traveling vehicle 1 are provided at a plurality of locations in each of the left and right tilt directions.
Upward end surfaces 16 are provided on the left and right sides of the middle of the front and rear connection surfaces 162 and 163 in the rolling support shaft pivot 159 on the fifth side.
2c, 163c, and the upward end faces 162c, 1
The configuration in which 63c is formed in accordance with the height of the highest portion of the outer peripheral surface of the horizontal frame 45 and the lower ends of the right and left side walls of the hitch 24 corresponding to the right and left side surfaces of the joining space 153 in the rolling fulcrum shaft pivotal support 151 on the side of the hitch 24 run. When the planting portion 15 is not inclined with respect to the vehicle 1, the front and rear connecting surfaces 162, 1
63 upward end faces 162c, 163c and horizontal frame 4
5, when the planting portion 15 is tilted upward or leftward by a predetermined angle with respect to the traveling vehicle 1, the upward end surface 16 of the front and rear connecting surfaces 162 and 163
The lower ends of the right and left side walls of the hitch 24 corresponding to the left and right side surfaces of the joint space 153 in the rolling fulcrum shaft pivot 151 on the hitch 24 side so as to abut (interfere) with the outermost surface of the outer peripheral surface of the horizontal frame 45. 24 is lifted up from the lower ends of the other left and right side walls by a notch 165 in the form of a gate when viewed from the side. 1) at the lower end of the right and left side walls of the hitch 24 serving as the bottom of the notch 165 and the upward end face 162c of the front connection surface 162, and the hitch 24 serving as the bottom of the upward end face 163c and the notch 165 of the rear connection surface 163. A total of three interference parts A, B, one at the lower end of the left and right side walls, and one at the lower end of the left and right side walls of the hitch 24 which is the highest part of the outer peripheral surface of the horizontal frame 45 and the bottom of the notch 165. The provided front and rear coupling surface in the rolling fulcrum shaft pivotally supporting 159 of the planting unit 15 side when no further planting unit 15 is tilted with respect to the vehicle 1 162,
63, that is, upper fixing portions 162b, 16
The center of the upper end of 3b has a radius such that the cylindrical surface centered on the axis of the rolling fulcrum shaft 97 contacts the inner surface of the upper surface of the bracket 152 in the rolling fulcrum shaft pivot 151 on the hitch 24 side, that is, the ceiling surface of the joint space 153. Of the front and rear connecting surfaces 162 and 163 in the rolling fulcrum shaft pivot 159 on the planting portion 15 side when the planting portion 15 is not inclined with respect to the traveling vehicle 1 and is not inclined with respect to the traveling vehicle 1. Side portions, ie, upper fixing portions 162b, 163b
The cylindrical surface centered on the axis of the rolling fulcrum shaft 97 has a radius that makes contact with the inner surface of the upper surface of the bracket 152 of the rolling fulcrum shaft pivot 151 on the hitch 24 side, that is, the ceiling surface of the joint space 153. When the planting portion 15 is inclined to the left or right by a predetermined angle with respect to the traveling vehicle 1, the front-rear connecting surface of the rolling fulcrum shaft pivotal support portion 159 on the planting portion 15 side. The right and left upper end portions of the upper and lower fixing portions 162b and 163b, ie, the upper and lower right and left side portions of the upper fixing portions 162b and 163b,
The upper fixing portions 162b and 163b of the front and rear connecting surfaces 162 and 163 in the rolling fulcrum shaft pivot 159 on the planting portion 15 side are formed so as to abut (interfere) with the inner surface of the upper surface of the 52, that is, the ceiling surface of the joining space 153. The upper fixing portion 16 on the front side which abuts (interferes) when the planting portion 15 is inclined to the left or right by a predetermined angle with respect to the traveling vehicle 1.
A total of two interference portions D and E, one at the upper left and right sides of the joint space 153 and one at the ceiling surface of the joint space 153, and one at the upper right and left sides of the rear upper fixing portion 163b and the ceiling surface of the joint space 153.
When the planting portion 15 is inclined leftward or rightward by a predetermined angle with respect to the traveling vehicle 1, the structural member of the rolling fulcrum shaft pivot 159 on the planting portion 15 side and the rolling fulcrum shaft pivot on the hitch 24 side. The structural member of the support part 151 is simultaneously contacted (interfered) at five places, and the laterally tilting operation (rolling) of the planting part 15 is restricted to a predetermined range.

The upward and downward connecting surfaces 162c, 163c of the front and rear connecting surfaces 162, 163 in the rolling fulcrum shaft pivot 159 on the planting portion 15 side which is one of the interference portions A, B, C.
And the bottom of the notch 165 in the rolling fulcrum shaft pivot 151 on the hitch 24 side, which is the other of the interference portions A, B, and C, with respect to the outermost surface of the lateral frame 45. In order to prevent the corners from abutting (interfering) and one or both of the interference portions A, B, and C from being dented and deformed, the rolling fulcrum shaft pivoting portion 1 on the hitch 24 side.
Outward ribs 166 are formed at the lower ends of the left and right side walls of the hitch 24 serving as the bottom sides of the notches 165 in 51.
Rolling fulcrum shaft pivot 1 on the planting portion 15 side
Upward end face 1 of front and rear connection faces 162 and 163 at 59
62c, 163c and the outermost surface of the horizontal frame 45 are brought into contact (interference) with each other, so that interference between the interference portions A, B, C is performed between the surfaces. The interference between one and the other of the remaining interference portions D and E is performed between the surfaces.

As is apparent from the above description, the intermediate boss 160, which is a rolling support member of the planting portion 15, is placed at least on the horizontal frame 45, which is the planting frame 20, in a direction perpendicular to the intermediate boss 160, in plan view. A part of the intermediate boss 160 is provided so as to wrap with the horizontal frame 45, and even if a hitch table 161 as a connecting member for connecting the intermediate boss, 160 and the horizontal frame 45 is required,
Due to the downsizing of the hitch table 161 and the reduction of the moment involved, a hitch table 161 that is lighter and cheaper than the conventional hitch table can be used, and the weight and cost of the riding rice transplanter can be reduced. Further, the planting portion 15 can be arranged closer to the traveling vehicle 1 than before, and the operability when operating various operation levers on the planting portion 15 side while sitting on the driver's seat 13 of the traveling vehicle 1 is improved. And the running performance can be improved by shortening the overall length of the fuselage.

Further, an intermediate boss 160 which is a rolling support member of the planting portion 15 is provided directly above the horizontal frame 45 which is the planting frame 20 in a direction orthogonal to the intermediate boss 160. Even if a hitch table 161 as a connecting member for connecting the horizontal frame 45 is required, the hitch table 161 can be made smaller than the conventional one by minimizing the hitch table 161 and almost eliminating the moment applied thereto. Light and cheap ones can be used, and the weight and cost of the riding rice transplanter can be reduced. In addition, the planting section 15 can be arranged closest to the traveling vehicle 1 as compared with the related art, and operability when operating various operation levers on the planting section 15 side while sitting on the driver's seat 13 of the traveling vehicle 1 is improved. It is possible to improve the running performance by shortening the overall length of the fuselage.

Further, in a riding rice transplanter connected to the traveling vehicle 1 so that the planting portion 15 can be tilted left and right around a rolling fulcrum shaft 97 facing in the front-rear direction, the planting portion 15 is attached to the traveling vehicle 1. A plurality of interference portions are provided in each of the left and right tilt directions so as not to incline beyond a certain range, so that the force acting on each of the interference portions A, B, C, D, and E is reduced as compared with the related art. Parts that are lighter and cheaper than conventional parts can be used, and the weight and cost of the riding rice transplanter can be reduced.

Further, in a riding rice transplanter connected to the traveling vehicle 1 so that the planting portion 15 can be tilted left and right around a rolling fulcrum shaft 97 facing the front and rear direction, a hitch 24 connected to the traveling vehicle 1 and a plant An intermediate boss 160 which is a rolling support member connected to the horizontal frame 45 which is a portion orthogonal to the rolling fulcrum shaft 97 in the planting frame 20 of the attachment portion 15 is connected by the rolling fulcrum shaft 97, and the intermediate boss 160 is connected to the horizontal frame 45. The hitch table 161 which is a connecting member for connecting the 160 at a plurality of locations is configured to interfere with the hitch 24 at a plurality of locations when the planting section 15 is tilted to a certain left or right attitude with respect to the traveling vehicle 1. And
Each of the interference parts A, B, C between the hitch 24 and the hitch base 161
The forces applied to D and E are made smaller than before, and the hitch 24 and the hitch base 161 can be made lighter and cheaper than the conventional one, so that the weight and cost of the riding rice transplanter can be reduced.

FIGS. 29 and 30 show a modification of the rolling fulcrum shaft pivot on the planting portion 15 side. The rolling fulcrum shaft pivoting portion 159A on the planting portion 15 is provided with a hitch base 161.
Without using, the intermediate boss 160 which is a rolling support member of the planting portion 15 is placed at the left and right central portion or the left and right substantially central portion of the horizontal frame 45 which becomes the planting frame 20 in a direction orthogonal to the intermediate boss 160, Intermediate boss 160 in plan view
And the horizontal frame 45 are connected to the horizontal frame 45 in a horizontal or substantially horizontal posture in the front-rear direction so as to intersect at a right angle. If the hitch table 161 is not used to connect the intermediate boss 160 and the horizontal frame 45, the intermediate boss 16
0 just contacts the horizontal frame 45, the intermediate boss 1
60 can be fixed to the horizontal frame 45 at only one point by welding, and the joining strength is insufficient. To compensate for this, a notch 167 along the outer surface of the intermediate boss 160 is provided on the upper surface of the left and right central portions or the upper surface of the substantially right and left central portions of the horizontal frame 45, and the intermediate boss 160 is joined to the notch 167 from above. The outer surface of the intermediate boss 160 and the outer surface of the horizontal frame 45 are fixed by welding around the periphery, so as to increase the welding area and obtain the necessary joining strength.

Since the planting drive shaft 51 is inserted through the horizontal frame 45, the depth of the notch 167 is
5 and the planting drive shaft 5
1 is formed so as not to come into contact therewith.

In the figure, reference numerals 168 and 169 denote the hitch table 16.
Rolling fulcrum shaft pivot 1 on planting section 15 side without
The inner surface of the upper surface of the bracket 152 in the rolling fulcrum shaft pivotal support 151 on the hitch 24 side, which is one of the interference portions D and E, is integrally raised from the front and rear portions of the intermediate boss 160 at 59A, that is, on the ceiling surface of the joint space 153, The other of the interference units D and E that abut (interfere) when the planting unit 15 is inclined leftward or upward by a predetermined angle with respect to the traveling vehicle 1,
That is, the rolling fulcrum shaft pivot 159 on the planting portion 15 side
Upper fixing portion 162 of the front and rear connecting surfaces 162 and 163 in FIG.
b, 163b are front and rear stoppers having the same action as those of the upper and lower stoppers 168, 169.
When the planting portion 15 is inclined to the left or right by a predetermined angle with respect to the traveling vehicle 1, the inner surface of the upper surface of the bracket 152 in the rolling fulcrum shaft pivotal support 151 on the hitch 24 side,
That is, it abuts (interferes) with the ceiling surface of the joint space 153,
The left and right tilting operation (rolling) of the planting section 15 is restricted to a predetermined range.

As is clear from the above, the intermediate boss 16 is attached to the horizontal frame 45 which is a planting frame in a direction orthogonal to the intermediate boss 160 which is a rolling support member of the planting portion 15.
A notch 167 is provided along the outer surface of the outer frame 0, and an intermediate boss 160 is attached to the notch 167. The intermediate boss 160 can be directly attached to the horizontal frame 45 by welding means or the like, and a conventional connecting member is unnecessary. Thus, the weight and cost of the riding rice transplanter can be reduced.

[0056]

As apparent from the above embodiment, claim 1
According to the invention described in the above, the intermediate boss 160 which is a rolling support member of the planting portion 15 is attached to the horizontal frame 45 which is the planting frame 20 in a direction orthogonal to the intermediate boss 160 by at least the intermediate boss 160 in plan view. A part thereof is provided so as to overlap with the horizontal frame 45, and a hitch table 16 which is a connecting member for connecting the intermediate boss, 160 and the horizontal frame 45.
Even if it becomes necessary, this hitch stand 161
As a result, the hitch table 161 can be made lighter and cheaper than the conventional hitch table, and the effect of reducing the weight and cost of the rice transplanter can be achieved. .

According to the second aspect of the present invention, the planting portion 15
The intermediate boss 160 as a rolling support member is provided directly above the horizontal frame 45 as the planting frame 20 in a direction orthogonal to the intermediate boss 160.
Even if a hitch table 161 which is a connecting member for connecting the
By minimizing the 61 and minimizing the moment applied thereto, the hitch table 161 can be lighter and cheaper than the conventional hitch table, and the effect of reducing the weight and cost of the riding rice transplanter can be achieved. To play.

According to the third aspect of the present invention, the planting portion 15
A notch 167 is provided along the outer surface of the intermediate boss 160 on the horizontal frame 45 as a planting frame in a direction orthogonal to the intermediate boss 160 as a rolling support member.
7, the intermediate boss 160 is attached.
Can be directly attached to the horizontal frame 45 by welding means or the like, so that the conventional connecting member can be eliminated, and the effect of reducing the weight and cost of the riding rice transplanter can be achieved.

[Brief description of the drawings]

Fig. 1 Side view of a rice transplanter

FIG. 2 is an overall plan view of a riding rice transplanter.

FIG. 3 is a side view of the planting part.

FIG. 4 is a plan view of a planting portion.

FIG. 5 is an explanatory plan view of a planting part.

FIG. 6 is a schematic front view of a planting section.

FIG. 7 is a front view of the planting frame portion.

FIG. 8 is a side view of the planting frame portion.

FIG. 9 is a plan sectional view of the planting frame portion.

FIG. 10 is a plan view of the left side of the planting frame.

FIG. 11 is a plan view of the right side of the planting frame.

FIG. 12 is a left side sectional view of the planting frame.

FIG. 13 is an explanatory partial perspective view of a planting frame.

FIG. 14 is an explanatory view of a seedling removal unit.

FIG. 15 is an explanatory sectional view of a seedling sending case portion.

FIG. 16 is an explanatory view of a speed change shaft.

FIG. 17 is an explanatory view of a switching mechanism.

FIG. 18 is an explanatory diagram of a planting claw unit clutch unit.

FIG. 19 is an explanatory view of the external appearance of a planting claw unit clutch unit

FIG. 20 is an explanatory view of a side bumper part.

FIG. 21 is a front view of a rolling fulcrum.

FIG. 22 is a cross-sectional rear view of a rolling fulcrum.

FIG. 23 is a side view of a rolling fulcrum.

FIG. 24 is a cross-sectional side view of a rolling fulcrum.

FIG. 25 is a plan view of a rolling fulcrum.

FIG. 26 is an exploded side view of a rolling fulcrum.

FIG. 27 is a cross-sectional rear view of a rolling fulcrum showing a rolling regulation.

FIG. 28 is a side view of a rolling fulcrum showing a rolling regulation.

FIG. 29 is an external perspective view of a rolling fulcrum pivot portion on the planting portion side according to a modified example.

FIG. 30 is a cross-sectional side view of a rolling fulcrum shaft pivot on the planting portion side according to a modified example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling vehicle 15 Planting part 20 Planting frame 24 Hitch 45 Horizontal frame 97 Rolling fulcrum shaft 160 Intermediate boss (rolling support member) 161 Hitch base (connecting member) 167 Notch A, B, C, D, E Interference part

Claims (3)

[Claims] 1. A rolling support member of a planting portion is provided on a planting frame in a direction orthogonal to the rolling support member such that at least a part of the rolling support member wraps with the planting frame in plan view. A riding rice transplanter characterized by the following. 2. The riding rice transplanter according to claim 1, wherein the rolling support member of the planting portion is provided immediately above the planting frame in a direction orthogonal to the rolling support member. 3. A transplanting rice planting characterized by providing a cutout along the outer surface of a rolling support member in a planting frame in a direction orthogonal to the rolling support member of the planting portion, and attaching the rolling support member to the cutout. Machine.