JPH0112445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates in particular to the structure of a sensing float provided between a pair of left and right soil leveling floats in a four-row riding rice transplanter.

〓Conventional technology〓 This type of rice transplanter is equipped with two soil leveling floats on the left and right sides that level the soil at two planting positions, and automatically controls the height by sensing the float ground pressure between these floats. A sensing float is provided.

〓Problem to be solved by the invention〓 By the way, it is desirable to make the land leveling float as large as possible in order to prevent the imbalance caused by the horizontal movement of the seedling tank. It is also desirable to make the sensing float as large as possible, since the sensing performance will be affected by this.

〓Means for Solving the Problem〓 The present invention has been made in view of the above points, and in the middle part of the left and right side floats that level the soil in advance of the seedling planting row part, a This protruding part is wide on the left and right, and is provided so that it partially overlaps the front side of the side float, and the rear side excluding this protruding part is narrow on the left and right, and the front and rear middle part does not expand outward. This rice transplanter float is designed to ensure stability by increasing the size of the soil leveling float, and improve sensing accuracy by increasing the size of the sensing float and smoothing the flow of muddy water. It provides structure.

〓Embodiment〓 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawing, reference numeral 1 indicates a passenger vehicle body, and an engine 3 is mounted in front of a vehicle body frame 2, and front wheels 4 are suspended. A rear wheel 6 of the inner lug is attached behind it via a chain case 5 to drive it, and a driver's seat 7 is located between the front and rear wheels 4 and 6, and the driver's seat 7 is used for driving and other operations. I'm starting to do that. A planting machine 9 is connected to the rear part of the passenger vehicle body 1 via a lift mechanism 8 so as to be movable up and down. The planting work machine 9 is provided with a seedling tank 11 on which four seedlings are placed side by side in the case of four-row planting on a body frame 10, which is tilted backward and reciprocated in the left and right lateral directions. Planting bodies 12 are arranged facing four seedling take-out ports at the lower end of the seedling tank 11, and the seedlings are cut out one by one from the seedling tank 11 and planted on the field.

In addition, left and right side floats 13, 13' are provided on the left and right under the body frame 10 of the planting machine 9 to level the ground in advance of the seedling planting rows, and between these side floats 13, 13', A sensing float 14 is provided. Side float 13,1
3' has a wide front half and a narrow rear half,
The narrow portion 13a of the rear half is supported by the rotary support 15 on the side of the fuselage frame 10 so that it can freely swing forward, and the wide portion 13b of the front half is made as large as possible to support the rear wheels 6. It is located directly behind and has a smooth chevron-shaped tip to allow muddy water to flow smoothly.

The planting position where the implant 12 is located is leveled by leveling parts 13c and 13d at the boundary between these parts 13a and 13b.

On the other hand, the sensing float 14 is provided so as to protrude to the front side of the side floats 13, 13', and has a narrow portion 14a which is thinner than the rear side floats 13, 13' and is spaced equally between both floats 13, 13'. They are positioned with a gap between them, and their rear ends protrude slightly to the rear of the seedling tank 11, and are supported by a rotation support 15 in the same way as the side floats 13, 13', so that they can swing freely in the front. It's summery. The protruding portion side 14b is wide in the left and right directions, and partially overlaps the front sides of the left and right side floats 13, 13', and the inner two
It is formed to be wider than the width of each implant 12, 12'' and inserted into the inside of the rear wheel 6, and the tip is formed into a smooth chevron shape. Narrow middle part 14
c and 14d are formed so that they do not bulge outward, and are gently constricted to correspond to the external shapes of the wide portions 13b and 13'b of the adjacent side floats 13 and 13', allowing muddy soil and water to flow smoothly between them. Approximately equally spaced gaps 16, 16' are formed to allow the fluid to flow. A switching valve 17 for sensing the float ground pressure is attached to the center of the wide portion 14b of the sensing float 14, and the operation of this switching valve 17 moves the planting machine 9 up and down to adjust the float ground pressure. I try to keep it constant.

<Effect of the invention> Thus, according to the present invention, the large left and right side floats 13, 13' level the planting position where the planting body 12 is located, and also support the planting work machine 9 to raise the seedling tank. The stability against lateral movement of 11 is increased. The muddy water generated by the rotation of the rear wheel 6 of the inner lug flows uniformly and smoothly along the gap 16, 16' between the sensing float and the side float, and is not pushed toward the side float. Float 1 for sensing because it flows backwards.
4, and since the front portion 14b of the sensing float is formed wide and stably, sensing by the switching valve 17 can be performed accurately and reliably.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the structure according to the present invention, and FIG. 2 is a plan view thereof. 9... Planting work machine, 13, 13'... Side float, 14... Sensing float, 14a...
Narrow part, 14b... wide part.

Claims (1)

[Claims] 1. In the middle part of the left and right side floats that level the ground in advance of the seedling planting row part, it protrudes to the front side of this side float, and this protruding part side is wide from side to side, and partially overlaps with the front side of the side float back and forth. The float structure of the rice transplanter is such that the rear side excluding this protruding part is narrow from side to side, and the front and rear intermediate parts are provided with sensing floats that do not bulge outward.