JPH025692Y2 - - Google Patents

Description

[Detailed description of the invention] The invention provides a float for the seedling planting device.
The float is mounted so as to be movable up and down and biased downward, and an electric sensor is provided to detect the vertical position of the float relative to the seedling planting device, and the vertical position of the float relative to the seedling planting device is maintained within a set range. , a control mechanism is provided to automatically operate the seedling planting device with respect to the vehicle body based on information from the sensor;
A mechanism is provided to support the float so that the position can be changed up and down so that the predetermined mounting position of the seedling planting device can be changed up and down, and the sensor is positioned up and down so that the predetermined mounting position of the seedling planting device can be changed up and down. The present invention relates to a rice transplanter that is provided with a changeable support mechanism so that the planting depth can be changed and adjusted.

The above-mentioned rice transplanter is capable of maintaining the seedling planting device in an appropriate posture relative to the mud surface regardless of side-to-side rocking of the vehicle body, and can change the planting depth while always maintaining good rolling control. Although it was designed to be adjustable, it had the following inconveniences.

In other words, when adjusting the planting depth, conventionally, the operation for changing the mounting position of the float and the operation for changing the mounting position of the sensor are performed separately, but in this case, the operation is troublesome and cumbersome. At the same time, there was also a risk of erroneous operation.

The present invention was developed in view of the above circumstances, and its purpose is to enable easy and accurate adjustment of planting depth through simple modification. This is what I am trying to do.

In the rice transplanter mentioned above, the present invention is such that the float support mechanism is interlocked and connected to the sensor support mechanism so that the sensor mounting position is changed in the same direction and by approximately the same amount as the float mounting position is changed. It is characterized by:

In other words, when adjusting the planting depth, if the float mounting position is changed, the sensor mounting position can be changed in the same direction by approximately the same amount. This eliminates the inconvenience of the conventional structure mentioned above in which changing the sensor mounting position is performed separately, and the planting depth can be adjusted accurately with a simple operation. A rice transplanter that can be used satisfactorily has been obtained.

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

As shown in FIG. 1, at the rear of the vehicle body, which is equipped with left and right front wheels 1, 1, left and right rear wheels 2, 2, an engine 3, a driver's seat 4, etc., there is a slanted seedling stand 5 that is reciprocated horizontally with a constant stroke; It is equipped with four planting claws 6 that circulate up and down along the lower end row of pine-shaped seedlings placed on the seedling platform 5, take out the seedlings one by one, and plant them in the field. A seedling planting device 7 is provided, and the seedlings are successively planted as the lateral body advances.

The seedling planting device 7 is connected to the vehicle body via a quadruple link mechanism 8 so as to be movable up and down in a parallel position, and a hydraulic cylinder 9 is provided for raising and lowering the link mechanism 8 with respect to the vehicle body, Also,
The seedling planting device 7 is configured to be able to be raised and lowered relative to the vehicle body by extending and contracting the hydraulic cylinder 9.

As shown in Figures 2 to 4, three floats 10, 10A, 10A level the field for planting seedlings.
are arranged in the width direction of the vehicle body, and their rear ends are pivoted about the horizontal axis X with respect to the seedling planting device 7, and the front ends of each float 10 are arranged in the upper and lower directions. Seedling planting device 7 in a state that allows movement.
Bending/extending links 11, 11A, 11 connected to
A is provided.

A spring 12 biases the float 10 toward the center float 10 downward.
is provided in a state that acts on the bending/extending link 11, and a swing operation arm 14 for a control valve 13 that switches the operating state of the lifting hydraulic cylinder 9.
, the bending link 11 with respect to the central float 10
When the swing position of the float 10 for the seedling planting device is within the appropriate setting range, the control valve 13 is operated by the hydraulic cylinder 9. If the lift is out of the proper range when the lift is stopped,
The control valve 13 is actuated to extend the hydraulic cylinder 9 to raise the seedling planting device 7, and when the downward movement is out of the proper range, the control valve 13 is actuated to shorten the hydraulic cylinder 9 to raise the seedling planting device 7. The planting depth can be adjusted so that the planting device 7 can be automatically switched to a lowered state, and the swinging position of the float 10 relative to the seedling planting device can be automatically maintained within a set range. The structure is designed to maintain a constant value.

The lateral center portion of the seedling planting device 7 is pivoted to the rear end portion of the quadruple link mechanism so as to be swingable around the longitudinal axis Y, and the seedling planting device 7 is attached to the quadruple link mechanism 8. A spiral telescoping rod 16 for swinging operation is provided to be rotated by an electric motor 17, and reed start switches 18a and 18b for forward and reverse rotation of the motor 17 are provided on the left side. It is supported on the seedling planting device 7 in a state in which it is operated in accordance with the vertical movement of a rod 19 with a switch operating piece pivotally connected to a flexible link 11A with respect to a float 10A.
The seedling planting device 7 is automatically moved relative to the vehicle body based on the information of the switches 18A, 18A so that the vertical position of the left float 10A, which is biased downward by its own weight, relative to the seedling planting device is maintained within the set range. It is configured for rolling operation.

More specifically, when the vertical position of the left float 10A for the seedling planting device is at the same height as the vertical position of the central float 10 for the seedling planting device, the seedling planting device 7
The ground posture as seen in the front and back directions is a proper posture in line with the field scene, and whether or not it is in the proper posture is detected by the vertical fluctuation of the left float 10A with respect to the central float 10, and the proper posture is maintained. By performing rolling control to maintain the planting depth, the planting depth of each of the four planting claws 6 is made constant.

As shown in Figures 2 and 3, each float 1
Support arms 20, 20A for the rear end of 0...
The horizontal shaft 21 to which the 20A is attached is rotatably supported by the seedling planting device 7, and the horizontal shaft operating lever 22 is rotated integrally with the horizontal shaft 21, and the locking frame is held at a plurality of positions in the swinging direction. 23, the outer wire end of the wire 15 for lifting and lowering control, the spring 12, and
The frame body 24 supporting the bending/extending link 11 is attached to the first swinging arm 25 which is capable of vertically swinging the device for planting seedlings, and the support case 26 of the switches 18a, 18b is attached to the first swinging arm 25 that can swing up and down the device for planting seedlings. possible second
It is attached to the swing arm 27. And the first,
Each of the second swing arms 25 and 27 is connected to the horizontal shaft 2.
1, the support arms 20... are interlocked and connected via link mechanisms 28, 28A so that they swing by the same amount in the same direction as the support arms 20... swing. Accordingly, each float 10...
The predetermined mounting position of the seedling planting device is changed vertically, and the outer wire end of the lifting wire 15 and the starting switches 18a, 18b are changed accordingly.
The predetermined mounting position of the seedling planting device can be changed up and down to change and adjust the planting depth.

Reference numeral 29 in the figure is a manual lift lever that locks and swings the spool of the control valve 13, which is biased toward the lowering operation by the central float 10, to the upper operation using the locking arm 30. Yes, elevated position U,
Lifting stop position N, lowering position D, and the control valve 13
in a freely operable state and float 1 as described above.
0 and position A for automatic operation.

In carrying out the present invention, the rolling control mechanism may include a hydraulic cylinder for rolling operation that is operated based on information from switches 18a and 18b as electric sensors, and its specific configuration may vary. Can be changed.

Furthermore, the specific structure of the float support mechanism can be modified in various ways, such as by providing a support rod that slides up and down instead of providing the support arm 20A that moves up and down.

Furthermore, various modifications can be made to the sensor support mechanism, such as providing a support rod that slides up and down instead of providing the arm 27 that swings up and down.

In addition, various changes can be made such as using a wire instead of the link mechanism 28 to interlock the float support mechanism 20A and the sensor support mechanism 27.

[Brief explanation of the drawing]

Figure 1 is a side view of the riding rice transplanter, Figure 2 is a schematic diagram of the lifting and lowering operation structure of the seedling planting device, Figure 3 is a side view showing the mounting structure of the rolling control float, and Figure 4 is a side view of the riding rice transplanter.
The figure is a schematic front view showing the rolling operation structure. 7...Seedling planting device, 10A...Float, 18
A, 18B...Electric sensor, 20A...Float support mechanism, 27...Sensor support mechanism.

Claims (1)

[Scope of utility model registration request] A float 10A is attached to the seedling planting device 7 so as to be movable up and down and biased downward, and electric sensors 18a and 18b are provided to detect the vertical position of the float 10A relative to the seedling planting device. A control mechanism is provided for automatically rolling the seedling planting device 7 relative to the vehicle body based on information from the sensors 18a and 18b so as to maintain the vertical position of the seedling planting device 10A within a set range. , a mechanism 20A is provided to support the float 10A so that the predetermined mounting position of the seedling planting device can be changed up and down, and the sensor 18
Mechanism 2 that supports a and 18b so that the predetermined mounting position of the seedling planting device can be changed up and down.
7, the rice transplanter is configured to be able to change and adjust the planting depth, the float support mechanism 2
0A is interlocked and connected to the sensor support mechanism 27 so that the sensor mounting position is changed in the same direction and by approximately the same amount as the float mounting position is changed.