JPH07110170B2 - Walkable paddy farm work machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a paddy field agricultural working machine such as a walk-behind rice transplanter or a submerged seeder.

2. Description of the Related Art Conventionally, in a walk-type rice transplanter, a leveling float is pivotally attached to the lower part of a frame extending in the front-rear direction on a horizontal axis that allows the rear part to be raised and lowered by an operating lever, and the leveling part of this leveling float is adjusted up and down for planting. It is well known that the depth of seeding and the depth of seeding can be adjusted, but in the conventional structure, the float and the frame do not come into contact with each other even when the pivotal support is adjusted to the uppermost position, and It had a structure that left a space.

Problems to be Solved by the Invention As described above, the conventional type has a structure in which a gap still remains between the frame and the float even if the rear rotation fulcrum of the float is raised to the uppermost position. At the time of storage or storage, it is necessary to sandwich a special airframe receiving member between the float and the frame so that the airframe load can be received by the float.If this is not done, the lever attached with the horizontal axis of the pivot or the horizontal axis itself. However, there was a defect that the float could not be adjusted up and down due to deformation.

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

That is, the present invention has the engine 1 on the front side and the traveling transmission case 2 that is driven by appropriately mounting the traveling wheels 4, 4 arranged on the left and right sides, and extends rearward from the traveling transmission case 2 side. The frame 11 that bends upward and rearward from the middle part thereof is formed in the left and right center parts, and the left and right handles 12 are attached to the rear end side of the frame 11, and the agricultural work machine 13 is provided in the middle part of the frame 11. The ground level float that slides on the surface soil surface of the paddy field on the bottom side of this frame 11
The upper part of the rear side of 20 is mounted so as to rotate around a horizontal shaft 24 which is adjusted up and down by an operating lever 21, and when the horizontal shaft 24 is raised by the operating lever 21, the frame 11 is formed on the upper surface of the float 20. A walk-type paddy agricultural working machine was formed which was fitted in the longitudinal groove 20a so that the load of the machine was supported by the float 20.

Effect and Effect of the Invention According to the present invention, while the frame 11 is near the upper surface of the leveling float 20, it is possible to make a sufficient vertical movement without hindering the swing on the front side of the float 20 by the frame 11.
At the time of transportation or storage, if the rear part of the leveling float 20 is lifted to the uppermost position by the operation lever 21, the frame 11 is fitted into the groove of the float 20 and the leveling load is supported by the leveling float 20. The operation lever 21 does not change and the horizontal shaft 24 is not bent, so that transportation and storage can be reliably performed.

Example 1 is an engine. Reference numeral 2 denotes a traveling transmission case, the front end side of which is fixed to the side portion of the engine 1 so that the rear side thereof has a plane L shape, and the main body portion of the mission is located below the rear portion of the engine 1. This transmission case 2
On both left and right sides of the casing, there are provided cover cylinders for wrapping the drive shaft, and to the cover cylinders 3, 3 whose bases are freely rotatable are attached, and traveling wheels 4, 4 are mounted on the cover so that they can be transmitted. A hydraulic unit A including a hydraulic switching valve 5 and a first hydraulic cylinder 6 is attached to the upper side of the transmission case 2, and a piston 6a of the hydraulic cylinder 6 and left and right chain cases 3 and 3 are connected to a horizontal rod 7 and a rod. The left and right wheels 4, 4 are configured to be moved up and down by a hydraulic device by interlocking via 8a, 8b and arms 9, 9. A second hydraulic cylinder 10 that expands and contracts the rod 8a on the left side is interposed and is operated by switching the rolling valve 5a of the hydraulic switching valve 5, and the first hydraulic cylinder 6 will be described later. It is interlocked with the pitching valve 5b which is switched by the leveling float. The horizontal rod 7 is attached to the piston 6a of the first hydraulic cylinder 6 at its left and right center portions via a spring so as to be elastically slidable.

Reference numeral 11 denotes a frame, which is composed of a tubular body having a square cross section, a base portion of which is fixed to the traveling transmission case 2 and which has a structure in which the base portion is extended backward by a predetermined distance and then is swung upward and rearward. It is bent in the middle. The left and right handles 12 are attached to the rear end.

Reference numeral 13 denotes a rice transplanter, which is an example of a working machine, and has a planted transmission case 14 which is fixed by the base side straddling the frame 11 and protrudes upward.
The planting implement 15 is attached to both left and right sides of the plant by a crank and a rocking rod, and the seedling table 16 laterally movably attached to the frame 11 is attached to the rear side of the planting plant 15 in the planting transmission case 14. A connecting rod 17 is interlocked with a moving rod that is connected to the left and right reciprocating mechanism. Incidentally, the seedling receiving frame 18 which forms the seedling dividing opening while receiving the front end face of the seedling to be placed on the front end side of the seedling placing table 16 is interlocked with a lever 19 pivotally attached to the frame 11. It is configured so that it can be moved forward and backward and the amount of seedling division can be adjusted.

20 is a leveling float, on the lower side of the frame 11, the inside is molded with a synthetic resin in the center, a groove 20a is formed in the front-rear direction in the left and right central portions, the frame 11 It is a form that can be inserted.

Reference numeral 21 denotes a float up / down operation lever, which is rotatably attached to the frame 11 via a bracket, and a rear midway portion thereof is inserted into a guide groove 22a formed with an engaging recess of a lever guide panel 22 fixed to the frame 11, A bracket 23 fixed to the float 20 is pivotally attached to the front end by a horizontal shaft 24. Then, when the float 20 is swung up to the uppermost position by the operation lever 21 to engage with the engagement recess of the panel 22,
The lower part of the frame 11 is fitted into the groove 20 provided on the upper surface of the frame 20 so that they are pressed against each other.

Reference numeral 25 is an interlocking rod, which interlocks the front part of the float 20 with the pitching valve 5b. When the front side of the float 20 approaches the airframe side to a certain extent or more, the piston 6a of the first hydraulic cylinder device protrudes and the wheels 4 , 4 are lowered, and conversely, when they are separated over a certain range, the piston 6a is retracted and the wheels 4, 4
Is supposed to rise. Also, rolling valve
5a is configured to be switched by a pendulum 26, and a weight 29 is attached to a lower portion of an arm 28 which is rotatable around an axis in the front-rear direction on a protrusion 27 fixed to the machine frame of the hydraulic unit A. 28 The valve 5a is connected with the middle part and the valve 5a is switched when the aircraft leans to the left and right to a certain extent or more, the second hydraulic cylinder device is operated, and the left wheel 4 is moved up and down to make the aircraft horizontal left and right. It is configured to return to the state side.

A pointer 30 facing downward is provided on the weight 29, and a mark 31 indicating the direction in which the pointer 30 faces is formed on the traveling transmission case 2 side. The valve 5a can be adjusted so that the valve 5a is substantially switched when the direction in which the weight 29 is directed points to a certain position of the mark 31. That is, the adjusting mechanism B of the interlocking portion between the arm 28 and the valve 5a is constructed so that the pointer 30 and the mark 31 can be adjusted accurately.

The adjusting mechanism B includes bolts 36 provided on the left and right of the valve switching rod 35.
The arm 28 is interposed between a and 36b, and the position where the arm 28 and the bolts 36a and 36b contact can be adjusted.

Incidentally, the attachment of the pointer 30 and the mark 31 may be reversed to provide the mark 31 on the weight side and the pointer 30 on the case 2 side.
Anything that can visually check how much the pendulum 26 is tilted with respect to the machine body may be used.

To explain the above-mentioned action in detail, during rice planting work, when the cultivator becomes deeper from the surface soil surface of the paddy field, the left and right wheels 4, 4 sink, so that the front side of the leveling float 20 is pushed up to raise the rod 25.
, The pitching valve 5b is switched to project the piston 6a, and the rear ends of the chain cases 3 and 3 are rotated downward to rotate the wheels 4 and 4.
Descends and raises the aircraft. On the contrary, when it becomes shallower, the machine body floats, so the float 20 is suspended and the valve 5b is switched to the opposite side, and the piston 6a is retracted and the machine body descends.

Further, when the body leans to the left and right, the pendulum 26 always descends vertically, so that the rolling valve 5a is switched through the valve switching rod 35 while the left and right bolts 36a and 36b of the arm 28 are switched. Ten pistons move in and out to substantially adjust the length of the rod 8a, and the body is controlled to be horizontal on the left and right sides. In this way, the height and inclination of the machine body are automatically controlled and propelled to perform rice transplanting work.

That is, the seedlings in the seedling mounting table 16 that moves laterally back and forth from side to side are planting tools 15.
It is divided by and planted in the part that has been leveled by the leveling float 20 below.

Incidentally, during this planting work, since the groove 20a into which the frame 11 is fitted is formed on the upper surface of the leveling float 20,
Even if you set the planting depth by moving the float 20 up so that it becomes the deepest state with the operation lever 21, it does not unexpectedly limit the vertical movement of the float 20 and promotes without mud pushing. It is possible to lower the center of gravity of the machine greatly and perform stable work.

When the truck is transported or stored, the operation lever 21
When the leveling float 20 is further moved up beyond the adjustment locking position (a) where the planting depth in the working state becomes the deepest and the lever 21 is locked at the transportation locking position (b), the leveling float 20
The frame 11 is fitted into the groove 20a of the float 20 so that the load of the machine is supported by the float 20, so that the load of the machine is not entirely applied to the lever 21 and the horizontal shaft 24 of the pivot portion.
The airframe load is supported by. Therefore, unlike the conventional case, it is possible to avoid the troublesome work of installing the cushion support member between the float and the frame during transportation or storage.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a back cross-sectional view of an essential part, FIG. 2 is a plan view of the essential part, FIG. 3 is a side view of a leveling float, and FIG. Top view of leveling float, No. 5
The figure is a side view showing the whole rice transplanter, and Fig. 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, reference numeral 1 is an engine, 2 is a traveling transmission case, 4 is traveling wheels, 11
Is a frame, 12 is a handle, 13 is a working machine, 20 is a leveling float, 20a is a groove, 21 is an operating lever, and 24 is a horizontal axis.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takahide Shiozaki No. 1 Hachikura, Tobe Town, Iyo-gun, Ehime Prefecture Koichi Hoshino, Examiner, Engineering Department, Iseki Agricultural Machinery Co., Ltd.

Claims (1)

[Claims] 1. An engine 1 and a traveling transmission case 2 for driving by appropriately installing traveling wheels 4, 4 arranged on both left and right sides on the front side. The traveling transmission case 2 extends rearward from the traveling transmission case 2 side. A frame that bends upward and rearward from its midpoint
11 is formed in the left and right center part, and a handle 12 which is divided into left and right is attached to the rear end side of the frame 11,
The agricultural work machine 13 is attached to the middle part of the frame 11, and the rear side upper part of the leveling float 20 that slides on the surface soil of the paddy field is rotated around the horizontal shaft 24 that adjusts up and down with the operation lever 21 on the lower side of the frame 11. When the horizontal shaft 24 is lifted by the operating lever 21, the frame 11 is fitted into the groove 20a formed in the vertical direction on the upper surface of the float 20 so that the load of the body 20
A walk-type paddy farm work machine configured to be supported by.