JPS6337779Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a planting device that is connected and supported to the traveling machine so that it can move up and down and roll freely, and a plurality of ground floats that can swing up and down within a certain range are installed side by side in the left and right direction. Among them, the grounding floats located on both the left and right sides are configured as sensing floats for detecting rolling, and the grounding float located in the center is configured as a sensing float for detecting pitching, respectively, and the sensing float for detecting rolling is configured to act as a sensing float. Along with this, there is a mechanism for controlling rolling so that the planting device approaches a horizontal position, and a mechanism for controlling the rolling of the planting device so that the ground pressure acting on the sensing float becomes a predetermined value as the sensing float for pitching detection operates. The present invention relates to a rice transplanter equipped with a mechanism for controlling the elevation and descent of the rice transplanter.

In the rice transplanter with the above configuration, pitching control moves the planting device up and down to keep the ground pressure of the center float constant due to the longitudinal inclination of the machine body due to the unevenness of the hard disk in the front and back direction, and pitching control that moves the planting device up and down to keep the ground pressure of the center float constant. Due to the horizontal inclination of the aircraft body, if rolling control, which swings the planting device left and right in order to keep the ground pressure of the left and right side floats constant, is activated at the same time, the control will not be stable.

Therefore, in the rice transplanter having the above configuration, it is desirable to give priority to pitching control and rolling control.

Therefore, in giving priority between pitching control and rolling control, it is conceivable to provide a priority control circuit that gives priority between pitching control circuit and rolling control circuit. has the disadvantage that its structure is complicated.

The present invention is intended to give priority between pitching control and rolling control using a simple configuration without providing a special priority control circuit.

The characteristic structure of this invention to achieve the above purpose is as follows:
The central grounding float is placed closer to the front of the aircraft than the left and right grounding floats, giving priority to the lifting control and rolling control, and the following effects can be obtained from this configuration. play.

In other words, by a simple configuration in which the pitching detection float and the rolling detection float are shifted in the longitudinal direction of the aircraft, priority can be given between pitching control and rolling control, and this Therefore, a special priority control circuit is not required. Moreover, since the configuration is such that pitching control is performed first when giving priority, for example, if the left and right rear wheels of the aircraft ride on a convexity on a hard surface, and the planting device is at a higher level than the standard level. , and when there is a difference between the left and right convexities, the rolling control is activated after the pitching control is activated, so the amount of rolling control is smaller than when the rolling control is activated first.

Hereinafter, an embodiment of the present invention will be described based on the drawings. As shown in FIGS. 1 to 3, the rear part of the traveling aircraft 1 has a driving motion in the vertical direction as the hydraulic cylinder 2 expands and contracts. A 4-parallel link mechanism 3 is installed, and a 5-row planting device 5 is connected and supported to the rear mounting frame 4 of this 4-parallel link mechanism 3 so that it can roll freely around one front and rear axis P. The transmission mechanism for the forward-inclined seedling stand 6 and the planting claw drive mechanism 7 of the planting device 5 is connected to the interior planting case 8, with the rear end thereof serving as a fulcrum a, and via bent links 9. Three ground floats 10, which can be vertically oscillated within a certain range, are arranged side by side in the left and right direction. ,9
Both floats 10, 10 with a bending posture change of
Sensors 11, 11 are attached to detect the relative inclination angle with respect to the planting device 5 in an on/off manner, respectively, and further, based on the detection results of the sensors 11, 11, it is determined whether the left and right floats 10, 10 are the same or almost the same. the planting device 5 so that the angle is
A drive mechanism 12 is provided for forcibly rolling the traveling body 1.

By arranging the swinging fulcrums a, a of the left and right grounding floats 10, 10 at the intermediate portions of the respective floats 10, 10 in the longitudinal direction, the swinging Pressure receiving surfaces 10a, 10b and 10a, 10b are formed in opposite directions with the fulcrums a, a as boundaries, and the ground contact area of the front pressure receiving surfaces 10a, 10a is made sufficiently larger than that of the rear ground contact surfaces 10b, 10b. It has a large structure.

The drive mechanism 12 forcibly moves the planting device 5 around the front-rear axis P by driving and swinging the arm 14 that engages with the pin 13 fixed to the planting case 8 side around the vertical axis. A driving motor 15 for rolling, and the left and right grounding floats 10, based on the detection operation of the sensors 11, 11.
and a control circuit 16 for driving and controlling the drive motor 15 so that the angle of the drive motor 10 is maintained at the same or almost the same angle.

Further, among the grounding floats 10, the grounding float 10 located at the center is configured to also serve as a sensor float for detecting changes in the grounding pressure of the grounding float 10. Based on the vertical movement of the planting device 5, the planting device 5 is automatically controlled in elevation via the hydraulic cylinder 2 serving as an elevation control mechanism so that the ground pressure is maintained constant or almost constant. . and the grounding float 1 located at the center.
0, the ground floats 10 and 1 located on both the left and right sides
It is arranged in front of the fuselage compared to 0, and is configured so that pitching control is performed before rolling control.

As shown in FIG. 4, sensors 11, 11 for detecting the relative inclination angle of the left and right ground floats 10, 10 with respect to the planting device 5 are connected to the front ends of the ground floats 10, 10 and the planting case 8. It may also be provided between the sides.

In addition, the sensors 11, 11 may be configured to analogically detect the relative inclination angles of the left and right ground floats 10, 10 with respect to the planting device 5.

[Brief explanation of drawings]

The drawings show an embodiment of the rice transplanter according to the present invention; FIG. 1 is an overall side view of the riding rice transplanter, FIG. 2 is a partially omitted plan view, FIG. 3 is a partially cutaway side view of the main parts, and FIG. 4
The figure is a partially cutaway side view of main parts showing another embodiment. 1... Traveling body, 2... Lifting control mechanism, 5...
Planting device, 10...ground float, 12...rolling control mechanism.

Claims (1)

[Scope of utility model registration request] A plurality of grounding floats 10 that are vertically swingable within a certain range are arranged in parallel in the left-right direction on the planting device 5 which is connected and supported to the traveling body 1 so as to be able to rise and fall and roll freely. The ground floats 10, 10 located at the center are used as sensing floats for rolling detection, and the ground float 10 located in the center is used as a sensing float 10 for pitching detection.
and a mechanism 12 for controlling rolling so that the planting device 5 approaches a horizontal position in accordance with the sensing operation of the sensing float 10 for detecting rolling, and the sensing float 1 for detecting pitching.
In a rice transplanter equipped with a mechanism 2 that controls the raising and lowering of the planting device 5 so that the ground pressure acting on the sensing float 10 reaches a predetermined value in response to the sensing operation of the sensing float 10, the central grounding float 10 is , a rice transplanter characterized in that the rice transplanter is arranged on the front side of the machine body than the left and right ground floats 10, 10, and priority is given between the lifting control and the rolling control.