JPH01317318A - Agricultural working machine for paddy field of walking type - Google Patents

Abstract

PURPOSE:To support weight of machine body with ground making float in transferring or housing by installing upper part of rear side of the ground making float on lower side of frame around transverse shaft and the frame is engaged in vertical groove in upper face of the float with rising of the transverse shaft by operating lever. CONSTITUTION:A transverse shaft set an upper part of rear side of ground making float 20 so as to revolve is risen by an operating lever 21 and frame 11 is engaged in vertical groove in upper face of the float 20, thus weight of the machine body is supported by the float 20. The frame is positioned near the upper face of the float 20 without inhibiting swing of the float 20.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to agricultural machines for paddy fields, such as walk-behind rice transplanters and submerged seeding machines.

Conventional technology Conventionally, in walk-behind rice transplanters, a soil leveling float is attached to the lower part of a frame that extends in the front-rear direction, and the rear part is pivoted to a horizontal shaft that can be raised and lowered using an operating lever. It is known that the seeding depth and seeding depth can be adjusted, but with this conventional structure, even if the pivot part is adjusted to the top, the float and frame do not come into contact with each other, and the seeding depth cannot be adjusted in the vertical direction. The structure left some space.

Problems to be Solved by the Invention As mentioned above, in the conventional type, even if the rear pivot point of the float was raised to the top, a gap still remained between the frame and the float, making transportation difficult. It is necessary to sandwich special fuselage bones between the float and the frame so that the float can receive the weight of the fuselage during loading and storage. The problem was that the float itself deformed, making it impossible to adjust the float up and down.

Means for Solving the Problems In order to solve the above problems, the present invention has taken the following technical means.

That is, the present invention has an engine 1 on the front side and a traveling transmission case 2 to which traveling wheels 4, 4 disposed on both left and right sides are suitably mounted and driven, and extending rearward from the side of this traveling transmission case 2. , a frame 11 that bends upward and backward from the middle part is constructed in the left and right center parts, and this frame 11
Attach a handle 12 divided into left and right sides on the rear end side,
A farm work machine 13 is attached to the middle part of the frame 11, and the upper part of the rear side of the soil leveling float 20 that slides on the topsoil surface of the paddy field is rotated around a horizontal shaft 24 that is adjusted up and down by a control lever 21 on the lower side of the frame 11. When the horizontal shaft 24 is raised by the operation lever 21, the frame 1
1 is a vertical groove 20 formed on the upper surface of the float 20.
This walking-type paddy field agricultural working machine is constructed so that the weight of the machine body is supported by a float 20 by fitting into the inside of the float 20.

Effects and Effects of the Invention According to this invention, the frame 11 is the earth leveling float 2.
0, the front side of the float 20 can be moved up and down sufficiently without being obstructed by the frame 11, and the rear of the soil leveling float 20 can be moved to the top when being transported or stored. When lifted with lever 21,
Since the frame 11 fits into the groove of the float 20 and the machine load is supported by the ground leveling float 20, the operation lever 21
There is no deformation or bending of the horizontal shaft 24, and transportation and storage can be ensured.

Example 1 is an engine. Reference numeral 2 denotes a traveling transmission case, which is fixed to the side of the engine 1 at its front end and whose rear side is shaped like a flat cross.The main body of the transmission is located at the lower rear side of the engine 1. , this transmission case 2
Cover tubes are provided on both left and right sides of the drive shaft to enclose the drive shaft, and chain cases 3, 3 whose bases are rotatable are attached to the cover tubes, and heavy running wheels 4.degree. 4 are attached to these for transmission. and,
A hydraulic unit A consisting of a hydraulic switching valve 5 and a first hydraulic cylinder 6 is attached to the upper side of this transmission case 2, and a piston 6a of this hydraulic cylinder 6 and left and right chain cases 3 are attached.
, 3 and the horizontal rod 7. Rod 8a.

8b, linked via arms 9, 9, left and right wheels 4.4
It is configured to be raised and lowered by a hydraulic device. Further, a second hydraulic cylinder 1o that expands and contracts the left rod 8a is interposed, and the hydraulic switching valve 5
The above-mentioned first hydraulic cylinder 6 is operated by switching a rolling valve 5a, and the above-mentioned first hydraulic cylinder 6 is interlocked with a pitching valve 5b which is switched by a ground leveling float, which will be described later. The horizontal rod 7 is attached at its left and right center portions to the piston 6a of the first hydraulic cylinder 6 via a spring so as to be elastically slidable.

Reference numeral 11 denotes a frame, which is a cylindrical body with a square cross section, the base of which is fixed to the traveling transmission case 2, and which extends rearward a predetermined distance and then swings upward rearward; It is bent in the middle between the front and back. and,
A handle 12 divided into left and right sides is attached to this rear end.

Reference numeral 13 denotes a rice transplanter which is an example of a working machine, and planting tools 15 are mounted on both left and right sides of a planting transmission case 14 whose base side is fixed across the frame 11 and protrudes upward, by means of a crank and a swinging rod. Attach the frame 11 to the rear side of this planting tool 15.
A connecting tool 1 is connected to a moving rod connected to the left and right reciprocating mechanism in the planting transmission case 14.
It is linked with 7. A seedling receiving frame 18, which is located on the front end side of the seedling platform 16 and receives the front end surface of the seedlings to be placed and forms a seedling dividing opening, is linked to a lever 19 rotatably pivoted to the frame 11. You can adjust the movement forward and backward using the
It is configured so that the amount of seedling division can be adjusted.

Reference numeral 20 denotes a leveling float, which is located on the lower side of the frame 11 and is hollow inside and is molded from synthetic resin, and a groove 2°a is formed in the left and right center of the float in the front-rear direction.
The frame 11 is configured to fit into the frame 11.

Reference numeral 21 denotes a float up/down operation lever, which is rotatably attached to the frame 11 via a bracket, and whose rear midway portion is inserted into a guide groove 22a forming an engagement recess of a lever guide panel 22 fixed to the frame 11. A bracket 23 fixed to the float 20 is pivotally connected to the front end by a horizontal shaft 24. When the float 20 is swung up to the top using this operating lever 21 and set to engage with the engagement recess of the panel 22, the lower part of the frame 11 fits into the groove 20 provided on the upper surface of the float 20, and the two are brought into pressure contact. It is configured to do so.

25 is an interlocking rod that interlocks the front part of the float 20 and the pitching valve 5b, and when the front side of the float 20 approaches the aircraft body within a certain range, the piston 6a of the first hydraulic cylinder device protrudes and connects the wheel 4. ,4 is lowered,
Conversely, when the distance exceeds a certain range, the piston 6a is retracted and the car 1!14°4 is raised. Further, the rolling valve 5a can be switched by a pendulum 26, and an arm 28 is attached to a protrusion 27 fixed to the machine frame of the hydraulic unit A and is rotatable around an axis in the front and rear direction.
A weight 29 is attached to the lower part of the arm 28, and a valve 5a is connected to the middle part of the arm 28. When the aircraft leans more than a certain level to the left or right, the valve 5a is switched to operate the second hydraulic cylinder device, and the left wheel is activated. 4 is operated to raise and lower the aircraft to return it to the left and right horizontal state.

A pointer 30 pointing downward is provided on the weight 29, and a mark 31 indicating the direction of the pointer 30 is formed on the traveling transmission case 2 side. The valve 5a can be adjusted so as to be substantially switched when the direction of the weight 29 points to a certain position of the mark 31. That is, the arm 28 and the valve 5a
The adjuster 41 of the interlocking part is configured so that it can be adjusted accurately using the pointer 30 and the mark 31.

The adjustment mechanism B has the arm 28 interposed between bolts 36a and 36b provided on the left and right sides of the valve switching rod 35, so that the position where the arm 28 and the bolts 36a and 36b come into contact can be adjusted.

Note that the attachment of the pointer 30 and mark 31 may be reversed so that the mark 31 is provided on the weight side and the pointer 30 is provided on the case 2 side.In short, it is possible to visually see how much the pendulum 26 is tilted with respect to the aircraft body. It is fine as long as it is something.

To explain the above-mentioned action in detail, during rice planting work, when the plowing platform becomes deeper than the topsoil surface of the paddy field, the left and right cars @ 4 sink, so the front side of the soil leveling float 20 is pushed up and the rod 25 The pitching valve 5b is switched, the piston 6a protrudes, the rear ends of the chain cases 3, 3 are rotated downward, the wheels 4.4 are lowered, and the machine body is raised. Conversely, when the water becomes shallow, the aircraft floats up, so the float 20 hangs down, the valve 5b is switched in the opposite direction, the piston 6a is retracted, and the aircraft descends.

Also, when the aircraft leans left and right, the pendulum 26 is always vertically lowered, so the left and right bolts 36a, 3 of the arm 28
61), on the other hand, the rolling valve 5a is connected to the valve switching rod 3.
5, the piston of the second hydraulic cylinder 10 moves in and out to substantially adjust the length of the rod 8a, and the aircraft is controlled to be horizontal to the left and right. In this way, the height and inclination of the machine are automatically controlled while the machine is propelled and rice transplanting work is carried out.

That is, the seedlings on the seedling stand 16 that moves horizontally and reciprocally are divided by the planting tool 15 and planted in the area leveled by the lower leveling float 20.

During this planting work, since a groove 20a into which the frame 11 fits is formed on the top surface of the soil leveling float 20, the depth of the planting can be adjusted using the control lever 21 so that the float 20 is at its deepest position. Even if the float 20 is set to move upward, the vertical movement of the float 20 is not unexpectedly restricted, and the machine can be propelled without mud pushing, and the center of gravity of the machine body can be greatly lowered, allowing stable work.

When transporting by truck or storing, use the operating lever 2.
1. To plant in the working state, move the soil leveling float 20 upward beyond the adjustment locking position (A) where the depth is the deepest, and lock the lever 21 in the transport position (B). , the frame 11 is fitted into the groove 2Oa of the ground leveling float 20, and the weight of the machine body is supported by the float 20, so that the entire weight of the machine body is not applied to the lever 21 or the horizontal shaft 24 of the pivot part, The float 20 supports the weight of the aircraft.

Therefore, there is no need to take the troublesome effort of interposing a cushion support member between the float and the frame during transportation or storage as in the past.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a cross-sectional view of the main part, Fig. 2 is a plan view of the main part, Fig. 3 is a side view of the soil leveling float, and Fig. 4 is a cross-sectional view of the main part. Top view of the grading float, No. 5
The figure is a side view showing the entire rice transplanter, Figure 6 is its plan view,
FIG. 7 shows a rear view of the hydraulic unit, and FIG. 8 shows a side view thereof. In the figure, symbol 1 is the engine, 2 is the running transmission case, 4 is the running wheel, 1
1 is a frame, 12 is a handle, 13 is a working device, 20 is a leveling float, 20a is a groove, 21 is an operating lever, and 24 is a horizontal shaft. Figure 8Figure 7

Claims (1)

[Claims] Engine 1 on the front side and running wheels 4, 4 arranged on both left and right sides
It has a traveling transmission case 2 which is suitably mounted and driven, and a frame 11 that extends rearward from the side of the traveling transmission case 2 and bends upward and rearward from the middle part thereof is configured in the left and right center portions, A left and right handle 12 is attached to the rear end of this frame 11, an agricultural implement 13 is attached to the middle of the frame 11, and a land leveling float 20 that slides on the topsoil surface of the paddy field is attached to the lower part of this frame 11.
A horizontal shaft 24 whose rear upper part is adjusted up and down with an operating lever 21.
When the horizontal shaft 24 is raised by the operation lever 21, the frame 11 moves around the float 2.
A walking-type paddy field agricultural working machine configured so that the weight of the machine body is supported by a float 20 that fits into a longitudinal groove 20a formed on the top surface of a float 20.