JP2021029188A - Single-wheel type rice transplanter - Google Patents

Abstract

To provide a single-wheel type rice transplanter capable of improving working speed, and reducing a load of an operator.SOLUTION: In a single-wheel type rice transplanter 100, an engine 4 is disposed in front of running wheels 3, and a seedling planting device 2 is disposed on the rear of the running wheels 3, and a steering handle 61 is disposed on the rear of the seedling planting device 2. A seat 41 is provided directly above the running wheels 3, and a rudder plate 71 for steering and rotating a machine body 1 is provided in front of the machine body 1, and a rudder plate operation tool 73 for operating the rudder plate 71 is provided in front of the seat 41.SELECTED DRAWING: Figure 1

Description

The present invention relates to a one-wheel rice transplanter in which a wheel support portion that rotatably supports traveling wheels is supported by a body frame so as to be driven and raised by a hydraulic cylinder.

The mainstream of rice transplanters has become a four-wheeled passenger type, and workability has improved as the size and speed of rice transplanters have increased. However, since it is difficult to move a four-wheeled riding type rice transplanter in terraced rice fields and small fields, especially in mountainous areas, a walking type rice transplanter is often used. As such a walking type rice transplanter, for example, Patent Document 1 discloses a one-wheel walking type rice transplanter.

Special Fair 2-60282 Gazette

In the seedling planting work using a walking rice transplanter, the operator walks while inserting and removing his feet into the soil of the field, so there is a limit to increasing the walking speed, and there is a problem that the working speed cannot be improved. .. In addition, since the operator walks in the field, there is a problem that the work load is heavy.

The present invention is to provide a one-wheeled rice transplanter that can improve the working speed and reduce the labor of the operator.

In the present invention, the engine is arranged in front of the traveling wheels rotatably supported by the machine body, the seedling planting device is arranged behind the traveling wheels, and the steering handle is arranged behind the seedling planting device. It is a one-wheel type rice transplanter that is arranged, and a seat is provided directly above the traveling wheel, a steering plate for steering and rotating the aircraft is provided in front of the aircraft, and the steering plate is provided in front of the seat. It is provided with a rudder plate operating tool to be operated.

According to the one-wheel type rice transplanter of the present invention, the rice transplanter also functions as a passenger type by providing the seat, the rudder plate, and the rudder plate operating tool while having the configuration of the one-wheel walking type rice transplanter. As a result, the operator can perform the seedling planting work without walking in the field, so that the work speed can be improved and the labor of the operator can be reduced. Further, by adding the seat, the rudder plate, and the rudder plate operating tool to the existing walking type rice transplanter, a lightweight and compact one-wheeled rice transplanter can be constructed simply and inexpensively.

The one-wheel type rice transplanter of the present invention may have a configuration in which the traveling wheel is supported so as to be vertically raised and lowered around the center of the horizontal axis, and the seat may be provided so as to be displaceable in the front-rear direction.

According to such an aspect, the operator sits in the seat when the ground contact point of the traveling wheel moves in the front-rear direction by moving the traveling wheel up and down around the center of the horizontal axis in response to a change in the plowing board depth. By changing the position of the seat in the front-rear direction while keeping it, the front-rear balance of the aircraft can be corrected. As a result, it is possible to suppress variations in the planting depth due to fluctuations in the front-rear balance of the airframe. In addition, the operator can arbitrarily move the center of gravity by changing the position of the seat, and can easily cope with slip during work, go straight, and turn.

In the one-wheel type rice transplanter of the present invention, a float for a rudder plate may be attached to the rudder plate, and the rudder plate and the float for the rudder plate may be provided so as to be slidable up and down.

According to such an aspect, the float for the rudder plate slides in the field scene, so that the height of the rudder plate (buried depth of the rudder plate) can be automatically adjusted according to the field scene, and the rudder plate is insufficiently buried. It is possible to prevent over-burial and realize stable rudder plate operation.

The one-wheel type rice transplanter of the present invention has a configuration in which a pair of left and right main floats for supporting the seedling planting device are provided, and a pair of left and right auxiliary floats are provided on the left and right outer sides of the main float so as to be able to be flipped up and stored. You may want to be there.

According to such an aspect, by providing an auxiliary float, it is possible to assist the left-right balance of the aircraft, improve the seedling planting depth and the running stability, and prevent the operator from tipping over when getting on and off the aircraft. Can improve safety. In addition, by providing the auxiliary float so that it can be flipped up and stored, it is possible to plant seedlings by storing the auxiliary float on the shore side when planting seedlings on the shore, minimizing the distance from the shore. .. In addition, by storing the auxiliary float when turning, it is possible to minimize the turning of the headland. In addition, the auxiliary float can be flipped up and stored to make the aircraft compact, making it easy to transport and move the aircraft.

Further, a front-rear longitudinal rudder member extending downward is provided at the rear portion of the auxiliary float, the auxiliary float is rotatably supported around a vertical axis extending in the vertical direction, and the rear portion of the auxiliary float can be swung in the left-right direction. It may be provided in.

According to such an aspect, the auxiliary float can be automatically swung according to the traveling direction of the aircraft. For example, even if the seedlings are planted along the curved shore, the auxiliary float crushes the seedlings along the planting strips. You can glide without having to. In addition, the sliding trace of the rudder member provided on the auxiliary float serves as a guide for the center of the rice transplanter when planting in the next row.

It is a right side view of the one-wheel type rice transplanter of one embodiment. It is a top view of the one-wheel type rice transplanter of the same embodiment.

Hereinafter, an embodiment embodying the present invention will be described with reference to a drawing when applied to a one-wheel type rice transplanter 100 (hereinafter, simply referred to as a rice transplanter 100). In the following description, the left side in the direction of travel of the aircraft 1 is simply referred to as the left side, and the right side in the same direction of travel is simply referred to as the right side.

As shown in FIGS. 1 and 2, the rice transplanter 100 of one embodiment is a single-wheel, two-row rice transplanter equipped with a seedling planting device 2 for two-row planting at the rear of a one-wheel, walking-type machine 1. It is configured as. The rice transplanter 100 includes a single traveling wheel 3 rotatably supported by the body 1, an engine 4 and a mission case 5 arranged in front of the traveling wheel 3. A seedling planting device 2 is arranged behind the traveling wheel 3, and a pair of left and right steering handles 61 constituting the control unit 60 are arranged behind the seedling planting device 2.

Further, a bumper frame 7 connected to the front portion of the mission case 5 is provided on the front portion of the airframe 1. In the front-rear middle portion of the airframe 1, a single traveling transmission case 11 that rotatably supports the traveling wheels 3, a pair of left and right front side frames 8 arranged with the traveling wheels 3 sandwiched between the left and right, and a pair of left and right A rear side frame 9 is provided. The airframe frame 10 is composed of a mission case 5, a bumper frame 7, left and right front side frames 8, and left and right rear side frames 9.

As shown in FIG. 2, the front portion of the traveling transmission case 11 extending in the front-rear direction is connected to the right side surface portion of the mission case 5 so as to be rotatable around the horizontal axis X1 in the left-right direction. On the left side of the rear part of the traveling transmission case 11, the traveling wheel 3 is rotatably supported around the axis of the left-right axle 12. The rear portion of the traveling transmission case 11 is configured to be capable of swinging in the vertical direction with the horizontal axis X1 as a fulcrum.

The left and right front side frames 8 are made of a round pipe material for incorporating a transmission shaft inside, and the left front side frame 8 extends rearward from the left end portion of the mission case 5. The front side frame 8 on the right side extends rearward from the right end of the mission case 5. The left rear side frame 9 is connected to the rear end of the left front side frame 8, and the right rear side frame 9 is connected to the rear end of the right front side frame 8.

The control unit 60 includes a pair of left and right handle frames 62, a pair of left and right steering handles 61, an elevating operation lever 63, an accelerator lever 64, a planting clutch lever 65, and a traveling clutch lever 66.

As shown in FIGS. 1 and 2, the seedling planting device 2 uses a pair of left and right leveling floats 26 (an example of a main float) for leveling the seedling planting position in a paddy field as the vehicle body travels, to the left and right of the traveling wheel 3. A seedling stand 27 for placing two mat-shaped seedlings, a lateral feed mechanism 28 for reciprocating the seedling stand 27 in the left-right direction with a constant stroke, and a seedling stand 27 at the left and right stroke ends. A vertical feed mechanism 29 that moves each mat-shaped seedling placed on the seedling stand 27 downward by a predetermined amount each time it reaches, and the lower end of the mat-shaped seedling placed on the seedling stand 27. It is configured to include a pair of left and right seedling planting mechanisms 30 and the like for cutting a predetermined amount of seedlings from the part and planting them in a paddy field.

The left and right leveling floats 26 can swing up and down with respect to the machine body 1 with the left and right axis X2 set on the float bracket 31 provided on the upper surface of the rear portion as a fulcrum, and the front portion can move up and down within a predetermined range. It is supported in the state of becoming.

Next, a configuration for adjusting the vehicle body height for changing the vehicle body height will be described. The traveling transmission case 11 that rotatably supports the traveling wheels 3 is supported by the machine frame 10 so as to be driven and raised by the hydraulic cylinder 50. The hydraulic cylinder 50 for rotating the traveling transmission case 11 around the horizontal axis X1 to change the height of the vehicle body swings integrally with the traveling transmission case 11 with the swing arm 51 and the front side frame 8 on the right side. It is provided over and over.

By operating the elevating operation lever 63 to expand and contract the hydraulic cylinder 50, the traveling transmission case 11 can be swung up and down with the horizontal axis X1 in the left-right direction as a fulcrum, and the traveling wheel can be swung up and down by this up-and-down swing. The height to the vehicle body of 3, in other words, the height to the ground of the vehicle body can be adjusted. Further, the hydraulic cylinder 50 is configured to expand and contract as the front end portion of the leveling float 26 moves up and down.

Next, a configuration for the operator to ride on the rice transplanter 100 will be described. A seat 41 is arranged directly above the traveling wheel 3. The seats 41 are provided on a pair of left and right seat front and rear frames 44 fixed to the upper part of a gate-shaped front seat frame 42 and a rear seat frame 43 erected on the left and right front side frames 8 so as to be displaceable in the front-rear direction. ing.

The front seat frame 42 and the rear seat frame 43 are made of round pipes, have a substantially U-shaped shape with a downward opening when viewed from the front, and are arranged so as to straddle the upper part of the traveling wheel 3. The left and right lower ends of the front seat frame 42 are detachably attached to the front portion of the front side frame 8. The left and right lower ends of the rear seat frame 43 are detachably attached to the rear portion of the front side frame 8.

A pair of left and right seat front and rear frames 44 are detachably attached to the upper portion (horizontal portion) extending in the left-right direction of the front seat frame 42 and the rear seat frame 43. The seat front-rear frame 44 is made of a round pipe, and extends substantially horizontally in the front-rear direction from above the rear seat frame 43 to the front of the aircraft 1 through the front seat frame 42. The rear end of the seat front and rear frame 44 is fixed to the upper part of the rear seat frame 43. The middle part of the seat front and rear frame 44 is fixed to the upper part of the front seat frame 42.

Two pipe-shaped slide members 45 are slidably fitted to each of the front and rear seat frames 44 at a position between the front seat frame 42 and the rear seat frame 43, and are covered by the left and right seat front and rear frames 44. The fitted front slide members 45 and the rear slide members 45 are connected by a pair of front and rear seat support members 46 extending in the left-right direction.

The front and rear elongated seats 41 are fixed on the front and rear seat support members 46. As shown in FIG. 1, the seat 41 can be repositioned back and forth by sliding the slide member 45 back and forth on the seat front and rear frame 44.

As shown in FIGS. 1 and 2, a rudder plate 71 for steering and rotating the airframe 1 is provided in front of the airframe 1. The control plate 71 is fixed to the lower end of the steering shaft 72 extending in the vertical direction. The steering shaft 72 is rotatably provided around the shaft. At the upper end of the steering shaft 72, the front end of the steering plate operating tool 73 in which the operator seated in the seat 41 swings in the left-right direction to operate the steering plate 71 is fixed.

The steering shaft 72 is made of a round pipe and is supported by an upper shaft support member 74 fitted to a portion near the upper end of the middle portion of the steering shaft 72 and a lower shaft support member 75 fitted to a portion closer to the lower end of the middle portion of the steering shaft 72. It is provided so that it can slide up and down. The upper shaft support member 74 is attached to the upper shaft support member holding portion 76 fixed to the front end portion of the left and right seat front and rear frames 44. The lower shaft support member 75 is attached to a lower shaft support member holding portion 77 whose rear end portion is fixed to the central portion of the bumper frame 7 and extends forward.

Further, a pair of left and right step members 67 on which the operator seated on the seat 41 can place his / her feet are provided above the front portion of the left and right front side frames 8.

When the aircraft 1 is moving forward, the operator can change the direction of travel of the aircraft 1 by swinging the steering plate operating tool 73 left and right while seated in the seat 41 to change the direction of the steering plate 71. That is, the rice transplanter 100 of the present embodiment has a structure as a riding type in addition to a structure as a walking type.

A float 78 for the rudder plate is fixedly installed on the upper part of the rudder plate 71, and the float 78 for the rudder plate slides on the field scene 101 to obtain the height position of the rudder plate 71 (the buried depth of the rudder plate 71). Is configured to be automatically adjusted according to the field scene 101. As a result, it is possible to prevent insufficient or excessive burial of the rudder plate 71, and stable operation of the rudder plate 71 can be realized.

As shown in FIGS. 1 and 2, the aircraft 1 is provided with a passenger control unit 160 at a position closer to the front than the seat 41. The passenger control unit 160 includes a substantially U-shaped handle frame 162 that opens upward when viewed from the front, a pair of left and right steering handles 161 and an elevating operation lever (not shown) provided in front of the left steering handle 161. It is configured to include a planted clutch lever (not shown) and a traveling clutch lever 166 provided below the steering handle 161 on the left side. The handle frame 162 composed of a round pipe includes a lower portion (horizontal portion) extending in the left-right direction and a handle mounting portion extending upward from the left and right ends of the lower portion, and the steering handle 161 is directed backward at the upper end of the handle mounting portion. It is connected so as to extend.

The lower portion (horizontal portion) of the handle frame 162 extending in the left-right direction is the upper surface of the handle holding plate 81 fixed to the rear side of the upper shaft support member holding portion 76 and straddling the front portions of the left and right seat front-rear frames 44. It is attached to the handle holding member 82 fixedly attached to. The handle holding member 82 is provided so that a pair of left and right handle mounting portions extending upward of the handle frame 162 can be arranged in an arbitrary inclined posture by firmly sandwiching the lower portion of the handle frame 162 extending in the left-right direction. Then, the holding force of the handle holding member 82 is loosened, and the handle mounting portion of the handle frame 162 is rotated around the lower portion of the handle frame 162 as a fulcrum to bring the handle frame 162 into a desired inclined posture. By firmly sandwiching the lower portion and fixing the tilted posture of the steering wheel mounting portion, it is possible to adjust the height position and the front-rear position of the passenger operation unit 160 according to the posture and physique of the operator.

The elevating operation lever (not shown) of the passenger control unit 160, the accelerator lever 164, the planted clutch lever (not shown) provided below the left control handle 161 and the traveling clutch lever 166 are the elevating operation lever 63 of the control unit 60. It has the same functions as the accelerator lever 64, the planting clutch lever 65, and the traveling clutch lever 66, and the operator operates the same operation as operating the rice planting machine 100 with the control unit 60 while sitting on the seat 41. It is configured to be able to do.

As shown in FIGS. 1 and 2, a pair of left and right auxiliary floats 91 are provided on the left and right outside of the left and right leveling floats 26. The auxiliary float 91 includes an auxiliary float support shaft 92 projecting upward from the center of the upper surface of the auxiliary float 91, a float shaft support member 93 that rotatably supports the auxiliary float support shaft 92 around the axis, and a float shaft. A rotating arm member 94 extending inward from the support member 93 inwardly, and a fixed arm member 96 rotatably supporting the left and right inner ends of the rotating arm member 94 around a support shaft 95 extending in the front-rear direction. , It is supported by the float bracket 31 so that it can be flipped up and stored. The auxiliary float 91 is provided so that the position can be fixed at the installation position (see the solid line in FIGS. 1 and 2) and the storage position (see the alternate long and short dash line in FIG. 2).

By providing the auxiliary float 91 in this way, the left-right balance of the machine body 1 can be assisted, and the seedling planting depth and running stability can be improved. In addition, safety can be improved by preventing the operator from tipping over when getting on and off the aircraft 1. In addition, by providing the auxiliary float 91 so that it can be flipped up and stored, it is possible to plant seedlings by storing the auxiliary float 91 on the shore side when planting seedlings on the shore side, minimizing the distance from the shore. become. Further, by storing the auxiliary float 91 at the time of turning, the turning of the headland can be minimized. Further, by flipping up and storing the auxiliary float 91, the machine body 1 can be made compact, and the machine body 1 can be easily transported and moved.

As shown in FIGS. 1 and 2, a front-rear longitudinal rudder member 97 extending downward is provided at the rear portion of the auxiliary float 91. Further, as described above, the auxiliary float 91 is rotatably supported around the auxiliary float support shaft 92 extending in the vertical direction, and the rear portion of the auxiliary float 91 is provided so as to be swingable in the left-right direction.

As a result, the auxiliary float 91 can be automatically swung according to the traveling direction of the machine body 1. For example, even if seedlings are planted along a curved shore, the auxiliary float 91 does not crush the seedlings along the planting strips. You can glide. Further, the sliding trace of the rudder member 97 provided on the auxiliary float 91 serves as a guide for the center of the rice transplanter at the time of planting in the next row.

In the one-wheel rice transplanter 100 of the above embodiment, the engine 4 is arranged in front of the traveling wheel 3, the seedling planting device 2 is arranged behind the traveling wheel 3, and the steering handle is arranged behind the seedling planting device 2. 61 is arranged, a seat 41 is provided directly above the traveling wheel 3, a rudder plate 71 for steering and rotating the body 1 is provided in front of the body 1, and a rudder for operating the control plate 71 is provided in front of the seat 41. A plate operating tool 73 is provided.

According to the above embodiment, the seat 41, the rudder plate 71, and the rudder plate operating tool 73 are provided while providing the configuration of a one-wheel walking type rice transplanter, so that the rice transplanter also functions as a passenger type. As a result, the operator can perform the seedling planting work without walking in the field, so that the work speed can be improved and the labor of the operator can be reduced. Further, by adding 41 seats, a rudder plate 71 and a rudder plate operating tool 73 to the existing walking type rice transplanter, a lightweight and compact one-wheeled rice transplanter can be constructed easily and inexpensively.

Further, in the one-wheel type rice transplanter 100 of the above embodiment, the traveling wheel 3 is supported so as to be vertically ascending and descending around the horizontal axis X1, and the seat 41 is provided so as to be displaceable in the front-rear direction. According to such a configuration, when the traveling wheel 3 moves up and down around the horizontal axis X1 according to the change in the plowing board depth and the ground contact point of the traveling wheel 3 moves in the front-rear direction, the operator By changing the position of the seat 41 in the front-rear direction while sitting on the seat 41, the front-rear balance of the aircraft 1 can be corrected. As a result, it is possible to suppress variations in the planting depth due to fluctuations in the front-rear balance of the machine body 1. Further, the operator can arbitrarily move the center of gravity by changing the position of the seat 41, and can easily cope with slip during work, go straight, and turn.

In the above embodiment, the front seat frame 42, the rear seat frame 43, the upper shaft support member 74, and the handle holding plate 81 can be easily attached to and detached from the front and rear seat frames 44 by bolting. The seat frame 43 and the seat front / rear frame 44 may be configured such that the upper portion (horizontal portion) extending in the left-right direction can be divided into left and right at the central portion. As a result, the seat 41, the front seat frame 42, the rear seat frame 43, the front and rear seat frames 44, the upper shaft support member 74, and the handle holding plate 81 can be stored compactly in a separated state. For example, these members can be used as attachment specifications. When transporting or storing, the packing size can be reduced and the distribution cost can be reduced. In particular, since the substantially U-shaped rear seat frame 43 and the front and rear seat frames 44 are configured to be split left and right at the central portion, the area occupied by these members can be reduced and the packing size can be reduced. Further, the lower portion (horizontal portion) of the substantially U-shaped handle frame 162 may also be configured so as to be divisible into left and right at the central portion. As a result, the packing size of the handle frame 162 can be reduced.

The present invention is not limited to the above-described embodiment, and can be embodied in various aspects. The configuration of each part is not limited to the illustrated embodiment, and various changes can be made without departing from the spirit of the present invention. is there.

For example, the rice transplanter may be a rice transplanter equipped with a seedling planting device having three or more rows of planting rows instead of the two-row planting type rice transplanter. Further, the front-rear movement of the seat 41 may be performed according to the change in the vertical position of the traveling wheel 3.

1 Airframe 2 Seedling planting device 3 Traveling wheels 4 Engine 11 Traveling transmission case 12 Axle 26 Leveling float (main float)
41 Seat 42 Front seat frame 43 Rear seat frame 44 Seat front and rear frame 45 Slide member 46 Seat support member 61 Steering wheel 71 Rudder plate 72 Steering shaft 73 Rudder plate operating tool 78 Rudder plate float 91 Auxiliary float 97 Rudder member 100 Single-wheel type rice planting Machine 101 Field scene X1 Horizontal axis

Claims (5)

The engine is arranged in front of the traveling wheels rotatably supported by the machine body, the seedling planting device is arranged behind the traveling wheels, and the steering handle is arranged behind the seedling planting device. It is a one-wheel type rice transplanter
A one-wheel type in which a seat is provided directly above the traveling wheels, a steering plate for steering and rotating the aircraft is provided in front of the aircraft, and a steering plate operating tool for operating the steering plate is provided in front of the seat. Rice transplanter. The traveling wheel is supported so as to be able to move up and down around the center of the horizontal axis.
The one-wheel type rice transplanter according to claim 1, wherein the seat is provided so as to be displaceable in the front-rear direction. The one-wheel type rice transplanter according to claim 1 or 2, wherein a float for a rudder plate is attached to the rudder plate, and the rudder plate and the float for the rudder plate are provided so as to be slidable up and down. It has a configuration in which a pair of left and right main floats that support the seedling planting device are provided.
The one-wheel type rice transplanter according to any one of claims 1 to 3, wherein a pair of left and right auxiliary floats are provided on the left and right outer sides of the main float so as to be flipped up and stored. A front-rear and longitudinal rudder member extending downward is provided at the rear portion of the auxiliary float, the auxiliary float is rotatably supported around an axis extending in the vertical direction, and the rear portion of the auxiliary float is provided so as to be swingable in the left-right direction. The one-wheeled rice transplanter according to claim 4.

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