JPS60137203A - Rice planter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention links a sensor float equipped in a seedling planting device with a seedling planting device lifting mechanism, so that the float can be grounded so that the grounding load acting on the sensor float is maintained at a set load. The present invention relates to a rice transplanter configured to control the operation of the lifting mechanism based on load fluctuations.

Generally, in a rice transplanter having the configuration described in 1, the setting load is changed by adjusting the biasing force that suppresses the four-tone sensor F downward according to the softness and hardness of the mud in the field, and the setting load is reduced in soft fields. The sensor sensitivity has been increased and the set load has been increased in the evening on hard fields to ensure control stability, but the following problem occurred when the planting travel speed was changed.

In other words, when the float slides on a mud surface, it moves up and down somewhat due to the reaction force as it rides on the unevenness of the mud surface, but the higher the traveling speed, the more intense the up and down movement becomes, which makes it difficult for the seedling planting device to move. The lifting control becomes unstable, and not only does the seedling planting depth not remain constant, but the seedling planting device vibrates up and down, making it difficult to level the field. there were. Conventionally, after recognizing that such a top μ state has appeared, the set load of the sensor float is readjusted to a stronger value, which takes time and effort to obtain the appropriate set load. Met.

The present invention has been made in view of the above-mentioned circumstances, and is capable of planting seedlings by automatically adjusting the setting of the reference ground load of the sensor float according to the traveling speed during work. By preventing the lifting mechanism of the attachment device from malfunctioning, by preventing the seedling planting device from vibrating up and down, and by improving the poor ground leveling action of the float,
The purpose of planting seedlings is to maintain them in a good condition, so that the planting of seedlings by efficient high-speed driving allows the work to be carried out smoothly and efficiently.

The present invention is characterized in that the mechanism for setting and adjusting the reference ground load of the sensor float is linked with the traveling speed changing means, and the set load increases as the speed is adjusted. The functions and effects of the reed are as follows.

In other words, since the ground load of the sensor float was adjusted according to the traveling speed by using the above structure, malfunctions of the raising and lowering mechanism of the seedling planting device were reduced, and vertical vibration of the float was also reduced.

In addition, the leveling of the float is maintained normally, and furthermore, it is possible to save the trouble of setting and adjusting the standard ground load of the sensor float each time according to the traveling speed of the aircraft during work. Now the work can be done smoothly.

Next, embodiments of the present invention will be explained based on the drawings.

As shown in FIG. 1, an engine (4) is mounted on the front part of a vehicle body frame (3) equipped with a pair of left and right rear propulsion wheels (1) and a pair of left and right front propulsion wheels (2) for steering operation, In addition to providing a boarding operation section (6) in the center, there is also an inclined surface loading platform (6) that carries mat-shaped seedlings (seedlings) and moves back and forth horizontally with a constant stroke, and a seedling loading platform (6) that sequentially moves from the bottom end of the seedling loading platform (6). -Equipped with t seedling planting claws (7) for taking out seedlings one by one and planting them on the mud surface, and a plurality of floats +81, +91, etc. arranged side by side in the left and right direction of the vehicle body. A seedling planting device (10) is connected to the rear of the vehicle body frame (3) via a link mechanism (11) to a hydraulic cylinder Q2) so that the vehicle body can be raised and lowered, and the rice seedlings can be planted in rows. The machine is configured.

As shown in Fig. 2, the sensor float (8) is arranged at the left and right center of the machine body, and is attached to the seedling planting device (10) so as to be able to swing up and down at the horizontal axis (I) on the rear end side. Flexible link mechanisms are added to the front end of the sensor float (8).

Seedling planting device lifting mechanism 0 that lifts and lowers the seedling planting device (lO)
The stem is a hydraulic pump α that drives the hydraulic cylinder atr.
A rotating shaft for operating the hydraulic pulp spout (15a) in and out of the hydraulic pulp (15a),
It consists of a cylindrical body (16a) with a cam (C) at the end and an operating lever (l?) fixed to this, and the spool lv (15 m) of hydraulic pulp 0@ is operated in the insertion direction. The oil passage is communicated with the hydraulic cylinder H so that the seedling planting device (101) is raised and the seedling planting device (10) is lowered by being operated in the pull-out direction.

Then, the operation lever (11 is a lever guide (111)
By stopping at a position of 10 (m), the cylinder body (1
6a) By abutment of the cam (c) at the end, the Nupu/'
(15m) is operated in the insertion direction, and the seedling planting device (10)
was forcibly raised, and in the evening, the lever (I7) was locked at the position of the Ido River (group) and the planting device (10) was raised.
The lowering of the sprue/' which had been regulated by the cam (C) is restricted, and the lever Qη passes through the position (Dl) of the lever gate and is locked at the position (Al).
(15a) is released, and the sensor float (8) is moved by a wire disposed across the arm 4 fixed to the rotation axis and the link mechanism (18 m long) on the float side of the link mechanism. The fluctuation of the ground load is transmitted to the arm 4, and the seedling planting device +10) is automatically raised and lowered by following the unevenness of the mud surface.

Further, the grounding load of the sensor float (8) is adjusted by springs 1211 and 8 arranged in parallel with the link (18a), and one spring +211 is connected to a lever (money) via a wire (2). ), and the other 7dering is connected to the wire),
It is linked and connected to the tension operating arm for adjusting the effective diameter of the pulley of the belt-type continuously variable transmission device (2) installed between the engine output shaft (4a) and the transmission input shaft (CL).

In addition, by locking and fixing the lever in a plurality of locking grooves formed on the side of the lever, the biasing force of the spring) can be changed, and the set grounding load of the sensor float (8) can be adjusted. Further, the operating arm of the continuously variable transmission is interlocked and connected to the speed operating bar 9), and the operating arm of the continuously variable transmission is
When is operated to the high speed side (Hl), the wire (c) is pulled, the biasing force of the spring (■) is increased, and the grounding load of the sensor float (8) is increased. (8) Ground load is spring C
It is determined by the resultant force of 2m+ and ■, and the setting can be adjusted arbitrarily by operating the lever @, and automatically when the aircraft's traveling speed slows down in the evening.

Fig. 8 shows another flow side of the present invention, and the sensor float (8), link mechanism (1'4, wire, and seedling planting device lifting mechanism (14) are arranged as described above. but,
Spring +21 installed on sensor float (8)
1 is single and the outer wire end of the wire day (28
a) The wire (30) that moves and operates the engine (4)'s accelerator device (311) is operated from a distance (9)
It differs in that it is linked and connected to the lever +241.
The difference is that the setting adjustment of the ground load of the sensor float (8) can be arbitrarily changed by operating the , and it is also possible to adjust the setting adjustment of the ground contact load of the sensor float (8) automatically according to the traveling speed of the aircraft. It has become something that does not exist.

[Brief explanation of drawings]

The drawings show an embodiment of the rice transplanter according to the present invention, in which FIG. 1 is an overall side view, FIG. 2 is a schematic side view showing the lifting and lowering operation structure of the seedling planting device, and FIG. 8 is the lifting and lowering operation structure of the seedling planting device. FIG. 2 is a schematic side view of the structure shown on the left side. +41... Engine, (8)... Sensor float, (10)... Seedling planting device, 04
)... Seedling planting device lifting mechanism, 61)...
・Accelerator device.

Claims (1)

[Claims] ■ A sensor float (
8) and the raising/lowering mechanism a4 of the seedling planting device, and controlling the operation of the raising/lowering mechanism 04 based on the float ground load firing so that the ground load acting on the sensor float (8) can be maintained at the set load. The rice transplanter is configured as such, and the mechanism for setting and adjusting the reference ground load of the sensor float (8) is linked with the traveling speed changing means, so that the higher the adjustment speed, the larger the set load becomes. A rice transplanter. ■ The traveling speed changing means is the on-board engine (4)! The rice transplanter according to claim 0, which operates the rice transplanter 1).