JPS6018023Y2 - Rice transplanter's planting device lifting mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a first state between the present machine and the planting device, in which the planting device can be raised and lowered while maintaining a constant attitude relative to the machine;
The above-mentioned rice transplanter is equipped with a driving lifting mechanism that can switch the device to a second state in which it can be raised and lowered by rotating around a fixed fulcrum on the machine side. For planting, when turning the aircraft with the device floating above the ground or supplying seedlings to the seedling platform, the device can be floated above the ground for planting so that the slope of the seedling platform is gentle to the ground. Although it is advantageous for aircraft rotation and seedling supply,
Planting is for adjusting the depth during planting.When raising and lowering the planting device, ensure that the posture of the planting device relative to the machine is constant, and the planting is for adjusting the depth. The point is to be able to do it in a more or less constant state.

First, an embodiment of the present invention will be explained based on the drawings.The riding machine 1, a seedling stand 7 located at the rear of the machine and leaning forward, 8 groups of planting claws, and 4 groups of soil leveling floats. 5 with
For row planting, the first state is between the device 2 and the device 2, where the device 2 can move up and down while maintaining a constant tilt to the ground, and for planting, the device 2 is moved around the fixed fulcrum R on the machine 1 side. A riding rice transplanter is equipped with a drive lifting mechanism 3 that can be switched freely to a second state in which it can be moved up and down by the rotation of the rice transplanter. 5 is provided, and a mechanism 6 is provided which links the sensor 5 and the driving elevating mechanism 3 to perform elevating operation in the first state when ground contact is detected.

The drive elevating mechanism 3 is provided with a link mechanism 9 that connects the planting device 2 to the planter 1 so as to be able to move up and down, and a link arm that swings up and down together with the top link 10 of the link mechanism 9. 11 and a fixed part on the side of the machine 1, a hydraulic cylinder 12 for driving the link mechanism 9 is interposed between the vertical link 13 and the lower link 14 of the link mechanism 9.
The hydraulic cylinder 12 is connected to the hydraulic cylinder 12 between the pivot joint 15 and the link arm 11 in the freely telescopic operating state.
The link mechanism 9 is parallelly interlocked as the hydraulic cylinder 12 expands and contracts, and in the locked state, the entire link mechanism 9 is connected to the top link 10 at the main body 1 side. That is, the hydraulic cylinder 16 (hereinafter, the hydraulic cylinder 12 will be referred to as a first cylinder and this will be referred to as a second cylinder) is rotated around the fixed fulcrum R.

). In addition, the link mechanism 9 is
Due to the abutting action of the pivot connection part 15 between the vertical link 13 and the lower link 14 to the fixed part on the machine 1 side, and the urging action by the weight of the device, planting is performed around the fixed fulcrum R during parallel movement. The overall movement is to be prevented.

The linkage mechanism 6 includes a lock valve 17 for the second cylinder 16, which is an electromagnetic valve that is switched to the locked state when energized and switched to the unlocked state when not energized, and the sensor 5 is set to the lock valve 17 when the sensor 5 detects grounding. It functions as a lock valve operation control switch that operates in the OFF state.

In summary, the rice transplanter according to the present invention has a device lifting mechanism as explained at the beginning, in which a sensor for detecting the grounding state is provided on the float of the planting device, and this sensor and the driving lifting mechanism are connected to each other. The present invention is characterized in that a mechanism is provided which cooperates to perform the lifting and lowering operation in the first state when grounding is detected.

In other words, when the float 4 is floating above the ground, the planting device 2 can be immediately rotated up and down from its floating position, so planting can be done when the device 2 is floating above the ground and turning the aircraft or placing seedlings. When replenishing the seedlings to the table, the slope of the seedling resting table 7 relative to the ground is made gentle so that unexpected slipping of the seedlings is not caused, so that the turning of the machine and the replenishment of the seedlings can be carried out advantageously.

Moreover, as long as the float 4 is in contact with the ground, that is, during planting work, the planting device 2 can be raised and lowered based on the detection of ground contact by the sensor 5 while maintaining its attitude relative to the plant. For planting to adjust the depth, regardless of whether the device 2 is raised or lowered, the posture of the device 2 relative to the machine should be maintained constant. Now you can adjust the depth.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the lifting mechanism of the rice transplanter according to the present invention, and FIG. 1 is a side view of the entire rice transplanter, and FIG. 2 is an enlarged side view of the main parts. 1... This machine, 2... Planting device, R.
... Fixed fulcrum, 3 ... Drive lifting mechanism, 4
...Float, 5...Sensor, 6.
・・・・・・Linkage mechanism.

Claims (1)

[Scope of utility model registration request] Between this machine 1 and the planting device 2, the planting device 2 is placed in a first state in which it can be raised and lowered while keeping the posture of the planting device 1 constant; In this rice transplanter, the rice transplanter is equipped with a driving lifting mechanism 3 which can be switched to a second state in which raising and lowering is possible by rotation around a fixed fulcrum R of the rice transplanter. and a mechanism 6 that links the sensor 5 and the drive lifting mechanism 3 to perform the lifting operation in the first state when ground contact is detected. Lifting mechanism.