JPS6056451B2 - Rice transplanter rolling control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides ground-based sensors that are elastically biased in the direction of contact with the ground via springs on both left and right sides of a multi-row planting device that is connected and supported to the traveling machine so that it can roll freely. Based on the detection signals from both sensors,
This invention relates to a rolling control device for a rice transplanter, which is provided with a drive mechanism that forcibly rolls the planting device relative to a traveling machine so that the posture of the planting device relative to the mud is maintained constant or almost constant in the left and right directions. .

In conventional rolling control devices for rice transplanters of this type, the pressing forces of the left and right ground-type sensors against the mud surface were manually adjusted based on the operator's senses, which not only required skill. In addition, the operation is complicated and troublesome, and it is actually impossible to adjust the pressing force of the sensor to the mud surface to an appropriate pressing force according to the hardness of the left and right mud surfaces. Rolling control of the planting device based on erroneous detection operations not only causes variations in planting depth, but also causes problems such as floating seedlings and missing plants.

In view of the above-mentioned circumstances, it is an object of the present invention to solve the above-mentioned inconveniences associated with the adjustment of the pressing forces of the left and right ground-type sensors against the mud surface. , a device is provided to detect the hardness of the mud surface near the mounting points of the left and right sensors, and based on an increase or decrease in the hardness detected by this device, the pressing force of the springs against the mud surface of both ground sensors is automatically and reversibly increased or decreased. It is characterized by being provided with an adjustment mechanism.

In other words, the pressing force of the left and right ground-type sensors against the mud surface can be automatically and accurately adjusted to an appropriate pressing force according to the detected hardness, based on the detection result of the mud surface hardness detection device. There is no need for any of the complicated and cumbersome operations required in the past, and there is no need to make incorrect or forgotten adjustments.The rolling control of the planting device is based on accurate detection results from the left and right sensors, while simplifying operations during planting. As a result, it was possible to perform good planting with stable rolling control without causing the above-mentioned troubles.

Hereinafter, an embodiment of the present invention will be described based on the drawings. A parallel quadruple link mechanism 3 is installed at the rear of the traveling body 1 and is driven and oscillated in the vertical direction as the hydraulic cylinder 2 expands and contracts. On the rear mounting frame 3A of this parallel quadruple link mechanism 3, three ground floats 4, which can swing up and down within a certain range using the rear end side as a fulcrum, are arranged side by side in the left and right direction for planting in five rows. The device 5 is connected and supported so as to be able to roll freely around one front and rear axis P, and among the ground floats 4, the ground floats 4, 4 located on both the left and right sides are connected to each other for detecting changes in the ground load of the ground floats 4, 4. It is configured to double as a ground sensor, and based on the detection operation of the sensor floats 4, 4, the ground load is maintained constant or almost constant, in other words, the soil surface in the left and right direction of the planting device 5 is controlled. In a riding rice transplanter equipped with a mechanism 6 for forcibly rolling the planting device 5 so that the posture is maintained constant or almost constant, the hardness of the mud surface near the attachment point of the sensor floats 4 is detected. A mechanism 8 is provided which automatically and reversibly adjusts the pressing force of both the ground contact sensors 4, 4 against the mud surface based on the increase or decrease in the hardness detected by the device 7.

The drive mechanism 6 is constructed as follows.

That is, the rear brackets 4A, 4 located within or near the planting nail circulation locus of the sensor floats 4, 4.
A is provided with springs 11, 11 that elastically bias A in the ground contact direction via L-shaped links 10, 10 pivotally connected to the planting transmission case 9 of the planting device 5.
The sensor float 4 resists the elastic urging force of 1 and 11.
, 4 are displaced above a certain level by contact with the L-shaped links 10, 10.
In addition, the mounting frame 3A has an arm 13A that is swingable around a vertical axis that engages with a pin 12 provided on the planting transmission case 9 side. Based on the detection operation, a drive motor 13 is provided which forcibly rolls the planting device 5 via the arm 13A so that the ground load of the sensor floats 4, 4 is maintained constant or almost constant.
The mud surface hardness detection device 7 includes both the sensor floats 4
, 4. A pair of left and right grounding members 7A, 7A receive mud surface resistance when moving under the mud surface near 4, and swing and displace according to the degree of resistance, and these grounding members 7A, 7A are grounded. It is composed of torsion coil springs 7B, 7B that swing and bias in the direction.

The automatic adjustment mechanism 8 is composed of a pair of left and right wires 8A, 8A that link the springs 11, 11 and the grounding members 7A, 7A, respectively, and is configured to adjust the swinging position of the left and right grounding members 7A, 7A. Accordingly, the pressure force of the sensor floats 4, 4 against the mud surface by the corresponding springs 11, 11 is automatically adjusted individually.

Also, among the grounding floats 4..., the grounding pressure of the grounding float 4 located at the center of the width of the aircraft is constant or almost constant based on a change in vertical swing of a certain amount or more due to a change in ground pressure. The planting device 5 is automatically controlled to move up and down via the hydraulic cylinder 2 so that the height of the planting device 5 is maintained.

The mud surface hardness near the central grounding float 4 is detected, and the elastic pressing force of the central grounding float 4 on the mud surface is automatically and reversibly adjusted to increase or decrease based on the increase or decrease in the detected hardness. Also good.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the rolling control device for a rice transplanter according to the present invention, in which Fig. 1 is an overall side view of the riding rice transplanter, Fig. 2 is a rolling control system diagram, and Fig. 3 is a part of the main parts. It is a notch rear view. 1... Traveling body, 4... Ground type sensor, 5... Planting device, 6... Drive mechanism, 7... Mud hardness Detection device, 7A...
Grounding member, 8...Automatic adjustment mechanism.

Claims (1)

[Scope of Claims] 1. Ground-type sensors elastically biased in the direction of ground contact via springs 11, 11 on both left and right sides of a planting device 5 for planting multiple rows that is connected and supported to the traveling body 1 so as to be able to roll freely. 4, 4, and based on the detection signals from these two sensors 4, 4, the planting device 5 is controlled so that the posture of the planting device 5 relative to the soil in the left and right direction is maintained constant or almost constant. In a rolling control device for a rice transplanter, which is provided with a drive mechanism 6 for forcibly rolling the traveling body 1, a device 7 is provided for detecting the mud surface hardness near the attachment points of the left and right sensors 4, 4. The springs 11, 11 are adjusted based on the increase or decrease in hardness detected by the device 7.
A rolling control device for a rice transplanter, characterized in that a mechanism 8 is provided for automatically and reversibly adjusting the increase/decrease of the pressing force of both ground sensors 4, 4 against the mud surface. 2 The mud surface hardness detection device 7 is connected to both the ground sensors 4
, 4 consists of a pair of left and right grounding members 7A, 7A that receive mud resistance when moving under the mud surface in the vicinity and are displaced according to the degree of resistance. Rolling control device for the rice transplanter described. 3. The rolling control device for a rice transplanter according to claim 1 or 2, wherein both the ground sensors 4, 4 are configured to have a ground float installed in the planting device 5.