JP2926935B2 - Farming machine for paddy fields - Google Patents

Description

The present invention relates to a paddy field farming machine such as a riding type rice transplanter or a riding type paddy seeder.

[Conventional technology]

Conventionally, on a paddy field work machine attached to the rear of a paddy field riding type vehicle, a plurality of floats that slide down the ground and level the surface of the paddy field at the working position are placed at the rear positions of the left and right rear wheels of the riding type vehicle and the There was an agricultural work machine for paddy fields that was placed at the left and right intermediate positions with a left and right gap. In addition, many of such paddy field agricultural working machines are configured to control the lifting and lowering of the working machine by an operation of a float at a middle position between left and right. In such a configuration, in order to minimize a control delay of the lifting and lowering control of the working machine, the plurality of floats are arranged such that a front end position of the float at the left and right intermediate position is a float at each rear position of the left and right rear wheels. Was positioned so as to be located on the front side of the front end position.

[Problems to be solved by the invention]

In the above-mentioned conventional technology, the mud surface at the left and right intervals of the float is not leveled, so there is a problem in that portion that protrudes upward from the water surface of the paddy surface layer and that weeds grow there. Was.

In addition, the left and right long terrain covering the left and right floats,
Some floats are located in front of each float and behind rear wheels of a passenger vehicle. When such a leveling body is provided, the left and right interval portions of the float are also leveled, but the float at the middle position between the left and right, which also functions as a topsoil surface position sensor in the lifting and lowering control of the work machine, is disposed behind the leveling body. Will be. For this reason, the front ends of the floats at the left and right intermediate positions, which are located forward of the front end positions of the floats at the respective rear positions of the left and right rear wheels, cannot be disposed between the left and right rear wheels, and thus the work machine cannot be mounted. There is a problem that the vehicle cannot be mounted close to the vehicle and the longitudinal length of the aircraft becomes longer.

Therefore, the present invention relates to a paddy field agricultural work in which the working machine is controlled to move up and down by an operation of a float at a middle position between left and right which is arranged so that a front end position is located forward of a front end position of a float at each rear position of the left and right rear wheels. An object of the present invention is to make it possible to level the left and right gaps of a float while keeping the longitudinal length of the aircraft from becoming long.

[Means for solving the problem]

In order to solve the above-mentioned problem, the present invention provides a paddy field work machine 23 mounted on the rear part of a paddy field riding type vehicle 1 with a plurality of floats 2 for sliding the ground to level the paddy field surface at the work position.
7, 28, 28 are arranged at left and right rear wheels 10 and 10 rearward positions of the passenger vehicle 1 and left and right intermediate positions with a left and right interval, respectively, and the front end position of the float 27 at the left and right intermediate position is The floats 28 at the rear positions of the right and left rear wheels 10, 10 are also provided so as to be located on the front side of the front end position of the 28, and the work machine 23 is controlled to move up and down by the operation of the float 27 at the left and right intermediate position. In the agricultural machine for paddy field, the float
A plurality of terrain objects 29, 29 for arranging the left and right intervals of 27, 28, 28 are provided behind the front end position of the float 27 at the left and right intermediate positions and a plurality of terrain objects are provided on the left and right. A paddy field agricultural work machine characterized by being provided so as to overlap with each leveling range of floats 27, 28 on both left and right sides of the leveling bodies 29, 29.

[Functions and Effects of the Invention]

The present invention relates to a float 2 at each rear position of the left and right rear wheels 10, 10.
The work equipment 23 is operated by the operation of the float 27 at the middle position between the left and right, which is arranged so that the front end position is located on the front side of the front end positions of 8, 28.
In the paddy field working machine configured to control the lifting and lowering, float 27,28,2 by the terrain body 29,29 provided as described above
The left and right gaps of 8 can be satisfactorily leveled, and the front end of the float 27 at the left and right middle position can be placed between the left and right rear wheels 10, 10 so that the front and rear length of the fuselage can be shortened .

〔Example〕

One embodiment of the present invention will be described in detail with reference to the drawings. This embodiment relates to a riding type rice transplanter, and 1 is a towing vehicle for riding. This includes a steering gear case 3, a main transmission case 4,
An engine 5 and a rear wheel transmission case 6 are mounted, and a differential case 7 is provided on the rear end side of the main transmission case 4 so as to be freely rotatable on the left and right sides. A steering case 8 is mounted on the lower side of the front wheels 9 and 9.
, While the rear wheels 10, 10 are mounted outside the rear wheel transmission case 6. 11 is a steering wheel, 12 is a cockpit, and 13 is a boarding step. Reference numeral 14 denotes an engine cover, which is formed integrally with the step 13. Reference numeral 15 denotes a side transmission shaft that drives the rear wheel transmission case 6 from the main transmission case 4 side.

Reference numeral 16 denotes a working unit elevating mechanism, which pivotally connects the bases of an upper link 18 and a lower link 19 to a support 17 fixed to the rear end of the frame 2 and pivotally connects the distal ends thereof by a vertical link 20. Link
Hydraulic device with lever 21 integrated with frame 18 mounted on frame 2
Connected to 22.

23 is a rice transplanter as a working machine. This is provided with a seedling mounting table 25 for reciprocating left and right at the upper front side of the transmission case 24 and a seedling planting device 26 at the rear side of the transmission case 24. There are six seedling planting devices 26 equipped with individual planting bodies 26b on the left and right sides at an interval of about 30 cm, so that six rows of rice can be planted at one stroke at a time. The leveling float for leveling the planting portion position of the rice transplanter 23 includes a center leveling float 27 and side leveling floats 28 and 28, each of which is a transmission case also serving as a rice transplanter frame.
On the 24 side, the rear part is pivotally supported by a horizontal axis and the front part is mounted so that it can move up and down.

In the case of the six-row rice transplanter, the shape of each of these floats is formed in a scoop shape in which the front side is wide left and right and the rear side is narrow, and seedlings can be planted in the recessed rear position. Has become. The arrangement is
As shown in FIG. 2 or FIG. 3 in plan view, the center leveling float 27 protrudes forward, and the rear end (a) of the wide portion and the front end (b) of the side leveling float 28 are forward and backward. A shifted front and rear distance L is formed.

Reference numeral 29 denotes a vehicle trace leveling body for leveling the wheel traces, which is disposed at a front-rear interval between an inner end portion of the side leveling float 28 and a rear end of a wide portion of the center leveling float 27 and an outer end portion thereof. (C) is located in front of the side leveling float and the inner end (d)
Is located behind the wide part of the center leveling float.

And this wheel trace terrain 29 is a horizontal mounting frame that extends to the left and right
The lateral mounting frame 30 is fixed to the transmission case 24 via a support rod 31.

The action of the above example will be described in detail. During the rice planting operation, in the embodiment, the running front wheels 9, 9 are wheel mark grading bodies.
Leveled by 29. This is because the rear wheels 10, 10 do not need to be leveled by the leveling body 29 in order to level the ground at the leveling portion extending in the front-rear direction of the side leveling float 28. However, when the rear wheels 10a, 10a are mounted as shown in the imaginary line in FIG. 2 or in FIG. 3 because of the need to increase the tractive force, the vehicle trace leveling body 29 works to erase the trace.

The leveling body 29 is disposed at a front-rear interval between the inner front end of the side leveling float 28 and the rear end of the wide part of the center leveling float 27, and the outer end (c) has a side leveling float. And the inside (d) is located behind the wide portion of the central leveling float 27, so that the muddy water and the wheel marks that are pushed to the left and right at the wide end of the central leveling float 27 are leveled by the leveling body 29. The top soil surface of the paddy field is leveled by the joint of the three parts: the center leveling float 27, the side leveling float 28, and the wheel mark leveling body 29.

The central leveling float 27 is connected to a hydraulic valve 33 for controlling the operation of the hydraulic device 22 so that the rice transplanter 23 is controlled to move up and down in accordance with the depth of the paddy field. The wide part on the tip side of the float 27 is a leveling body 29
Since the float 27 is located at the front side, the movement of the float 27 is good, and accurate control is performed without fear of erroneous sensing.

In order to detachably attach the auxiliary rear wheel 10a, the axle 34 protruding outward from the rear wheel transmission case 6 is set as a square shaft (square, hexagon, etc.) and the square shaft portion 34a is used as the boss 35 of the rear wheel 10.
(The rear wheel 10 and the auxiliary rear wheel 10a in the drawing)
Is the same, the boss width T of the rear wheel boss 10 and the boss width T of the auxiliary rear wheel 10a become the same, so that the length of the square shaft portion 34a is at least twice as long as T, What is necessary is just to be equal to or greater than the sum of the boss widths of 10 and the auxiliary rear wheel 10a. ), As shown in FIG. 3, the bosses 35, 35a of the two wheels 10, 10a are inserted into the square shaft portion 34a in a state of being joined, and fastened with the retaining pins 36.
According to the mounting of such auxiliary wheels, it is only necessary to mount the auxiliary wheels and regular wheels on the axle in a superimposed manner, and the mounting structure is simplified, and only the outer wheels are fixed to the axle with pins. Note that the width of the bosses 35 and 35a must be considered so that the wheels are positioned at the intervals between the seedlings. If a spacer such as a collar is interposed between the boss 35 and the boss 35a, the boss width can be freely selected.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view of a partially simplified riding rice transplanter, FIG. 2 is a simplified plan view of main parts, and FIG. 3 is a main part of another example. FIG. 4 is a back cross-sectional view of a main part of another example. Reference numeral 1 in the figure is a paddy field riding type vehicle, 9 is a front wheel, 10 is a rear wheel, 27 is a center leveling float, 28 is a side leveling float,
29 is a wheel trace leveling body, L is a front and rear interval between the inner front end of the side leveling float and the rear end of the wide part of the center leveling float, (c) is an outer end side of the wheel trace leveling body, (d) ) Indicates the inner end side of the wheel mark preparation body.

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor, Hisashi Kamiya 1-Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Inspector, Iseki Agricultural Machinery Co., Ltd. Examiner, Hidehiko Nishida (56) Japanese Utility Model Application Sho 58-155923 (JP, U) Japanese Utility Model Application Sho 57-96622 (JP, U) Japanese Patent Publication No. 59-47572 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01C 11/02

Claims (1)

(57) [Claims] 1. A plurality of floats 27, 28, 28 for sliding on the ground and leveling the surface of a paddy field at a work position are mounted on a paddy field work machine 23 mounted at the rear of the paddy field ride type vehicle 1. The left and right rear wheels 10, 10 are arranged at respective rear positions and the left and right intermediate positions with a left and right interval, and the front end position of the float 27 at the left and right intermediate position is the rear position of the left and right rear wheels 10, 10. In the paddy field agricultural work machine, which is arranged and provided so as to be located on the front side of the front end positions of the floats 28, 28, and the lifting and lowering of the work machine 23 is performed by the operation of the float 27 at the left and right intermediate position, A plurality of leveling bodies 29, 29 for leveling the left and right intervals of the float 27 are located on the left and right sides behind the front end position of the float 27 at the left and right intermediate position,
A paddy field agricultural work machine, wherein a leveling range of the leveling bodies 29, 29 is provided so as to overlap each leveling range of the floats 27, 28 on both left and right sides of the leveling bodies 29, 29.