JPH0140413Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a float device in a rice transplanter.

Generally, a rice transplanter is equipped with a long float that slides on the rice field between the planting rows and extends before and after the planting position with the seedling planting claws, but the machine rotation work of this seed rice transplanter is This is carried out by lifting the rear part of the aircraft and lowering the aircraft propulsion wheels using hydraulic pressure activated by float sensing, so the front end of the float responds to the hydraulic actuation force that lowers the aircraft propulsion wheels, along with the lower front side of the aircraft attitude. As a result, he tries to be pushed even deeper into Tanabe. However, conventionally, as shown in Fig. 6, the front end of the float is formed by extending the leveling part for leveling the planting row position. The mud b is guided by the float side wall c and rises high upwards and invades the inside of the float, which increases the weight of the float, impairs the hydraulic pressure sensing effect of the float, and causes mud pushing phenomenon. This has caused drawbacks such as the inability to maintain an appropriate planting depth, which has hindered planting performance.

The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned actual situation, and is designed to eliminate the mud that is pushed out from the bottom surface of the float when the front end of the float is pressed deeply against the rice field when the aircraft is circling. In a rice transplanter that guides the rice to the sides instead of upwards to eliminate the occurrence of high mounds of mud, to prevent mud from entering the float, and without causing any problems with planting performance. The purpose is to provide a float device.

The structure of the present invention will be explained based on an embodiment shown in the drawings. Reference numeral 1 is a traveling body of a walking rice transplanter, and the traveling body 1 includes an engine 2, body propulsion wheels 3, and a seedling planting machine. The attachment claws 4, seedling stand 5, operation handle 6, etc. are provided as before.

The lower part of the traveling body 1 is equipped with a center float 7 according to the present invention and side floats 8 disposed on both sides of the center float 7.
The center float 7 is formed by a hollow body with a concave center portion on the upper surface, and is located between the rows of planting rows corresponding to the pair of left and right planting claws 4 provided on the center side of the body. It is formed to be long in the front-rear direction of the planting position A. On both sides of the center float 7 in front of the planting position A, a leveling part 9 is protruded to level the position of the planting rows on the rice field. The center side bottom surface 7a of the center float 7 is an inclined surface that gradually rises toward the front near the planting position A.
The flat side bottom surface 9a is substantially horizontal and has a stepped shape above the upward slope of the central portion side bottom surface 7a.

On the front end side of the center float 7, the rising surface of the center side bottom surface 7a and the flat side bottom surface 9a are located in front of a portion where they are substantially flush with each other, and as shown in FIG. is integrally formed with a wide portion 10 that protrudes further outward than the vertical side wall 9b extending from the flat portion 9. The bottom surface 10a of the wide portion 10 is inclined in the front-rear direction with a high front and rear low shape, but is horizontal in the left-right direction, and together with the side wall 9b constitutes a guide surface for guiding mud laterally. are doing.

Next, the operation of the present invention constructed as described above will be explained. During the seedling planting work, the center float 7 maintains a balanced pressure-receiving area by the upward slope of the central bottom surface 7a.
The rice field travels by sinking to a depth equivalent to the difference in level of the side bottom surface 9a of the leveled part, and the leveled part 9 collects the mud pushed out by the sinking of the side bottom surface 7a of the central part and creates a planting row. The position is pressed and leveled so as to be substantially flush with the field surface, and the seedling planting claws 4 plant the seedlings at the leveled planting row positions.

When the aircraft is turning, the rear end of the aircraft is lifted by operating the operation handle 6, and the front end touches the rice field, and the float is sensed to lower the aircraft propulsion wheels 3 by hydraulic operation. At this time, the front end of the center float 7 is pushed deeper into the rice field due to the hydraulic force that lowers the aircraft propulsion wheels 3, in line with the aircraft's lower front attitude. It is circulated in Mud is pushed out by the pushing of the front end of the center float 7, and as shown in FIG. , the horizontal bottom surface 10a of the wide portion 10 guides the mud in the lateral direction and forcibly extrudes it outward, preventing the extruded mud from rising high upwards as in the conventional case. do not have.

Furthermore, since the wide-width portion bottom surface 10a receives the action of pushing up the mud, the center float 7 has a large pressure-receiving area that includes the wide-width portion bottom surface 10a, and therefore, the amount of sinking of the front end of the center float 7 is reduced. Therefore, it is possible to more reliably prevent mud from entering the center recess of the center float 7 in addition to the forcible extrusion of the mud to the outside, thereby preventing mud from entering the center float 7. It does not become heavy and can always perform a normal float action, eliminate the mud pushing phenomenon, and allow the oil pressure sensing by the float to operate normally, so that an appropriate planting depth can always be maintained. .

In summary, the present invention provides, on the front end side of a float for sliding on rice fields, a wide part that protrudes further outward than the leveling part for leveling the position of the planting rows by the planting claws, and A guide surface that forcibly pushes the mud pushed out by the pushing action of the front end of the float toward the rice field toward the outside of the float, using the vertical side wall extending from the section and the horizontal bottom of the wide section. Therefore, when the front end of the float is pushed into the rice field during aircraft rotation, the mud that is pushed out is formed by the side wall extending from the leveled part and the bottom of the wide part. Guided by the guiding guide surface of the float, the float is forcibly pushed outward without rising high upward, and when the front end of the float is pushed in, the float becomes wide. The bottom surface of the float receives the uplifting action of the mud, which essentially becomes a large pressure-receiving area including the bottom surface of the wide section, which reduces the amount of settling, which together reliably prevents mud from entering the float. As a result, proper planting performance can be maintained at all times by eliminating the mud pushing phenomenon caused by mud entering into the float and the phenomenon of poor oil pressure sensing by the float.

[Brief explanation of the drawing]

The drawings show an embodiment of the float device in the rice transplanter according to the present invention, in which FIG. 1 is an overall side view of the walking rice transplanter, FIG. 2 is a plan view of the center float, and FIG. FIG. 4 is a cross-sectional view taken from FIG. 2, FIG. 5 is an explanatory diagram of the operation, and FIG. 6 is an explanatory diagram of the operation of the conventional example. In the figure, 1 is a traveling body, 4 is a seedling planting claw, 7 is a center float, 9 is a flat part, 9b is a side wall, 10 is a wide part, and 10a is its bottom surface.

Claims (1)

[Scope of utility model registration request] A wide part is provided on the front end side of the float for sliding the rice field, which projects further outward than the leveling part for leveling the position of planting the rice field by the planting claw, and a wide part is provided on the front end side of the float for sliding the rice field. The side wall of the float and the lateral bottom of the wide part form a guiding surface that forcibly pushes the mud pushed out by the pushing action of the front end of the float toward the rice field toward the outside of the float. Features a float device in a rice transplanter.