JPH0548621U - Automatic height adjustment type wheel mark erasing device for rice transplanter - Google Patents

Abstract

(57) [Abstract] [Purpose] The wheel trace erasing device is properly moved up and down according to the condition of the field to erase the wheel traces of the rice transplanter to eliminate mud pushing. [Constitution] In the wheel erasing device of the rice transplanter, a sensor for detecting the water depth and hardness of the field scene is arranged at an arbitrary position of the rice transplanter, and the height of the side float is automatically changed based on the signal from the sensor. It is configured to do so.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a wheel mark erasing device for a rice transplanter.

[0002]

[Prior Art]

 In conventional rice transplanter wheel mark erasing devices, a side float is placed behind the rear wheels to even out the wheel marks. Since the height of the side float is manually adjusted or is fixed, it is impossible to finely adjust the height according to the depth of water and the hardness of the topsoil during the work.

[0003]

[Problems to be solved by the device]

 In this way, if the float height is set regardless of the hardness of the field surface, if the wheel mark erasing device is not at an appropriate height for the depth of water or the hardness of the topsoil, the device will be The mud of the rice field was pushed to knock down the planted seedlings adjacent to the machine under work with the mud, or conversely, the control force of the device was insufficient and wheel marks remained. is there.

[0004]

[Means for Solving the Problems]

 The present invention uses the following means to solve the above problems. That is, in the wheel mark erasing device of the rice transplanter, a sensor for detecting water depth and hardness of the field scene is arranged at an arbitrary position of the rice transplanter, and the height of the side float is automatically changed based on the signal from the sensor. It is configured accordingly.

[0005]

【Example】

 Next, an embodiment shown in the attached drawings will be described. 1 is a side view of the rice transplanter, FIG. 2 is a plan view of the float portion F, FIG. 3 is a side view of the side float 1 which is a wheel mark erasing device, and FIG. 4 is a view showing a detection method by the water depth detection sensor 9. FIG. 5 is a diagram showing a detection method by the topsoil hardness detection sensor 10.

First, the overall structure of the rice transplanter will be described with reference to FIG. The planting machine B is mounted on the rear part of the traveling machine A so as to be able to move up and down. The planting machine B reciprocates the seedling placing table 3 left and right from a drive case M that transmits the engine driving force of the traveling machine. By sliding, the planting claws 4 are driven from the chain case 5 to cut off the seedlings, and the planting claws 4 are rotated to perform the planting work.

The lower part of the seedling mounting table 3 is a float portion F. Explaining with reference to FIG. 2, in the lower part of the seedling mounting table 3, a float support rod 6 is provided laterally in which three parts of left and right side turning parts 6a and 6a and a central turning part 6b are independently turnable. A center float 2 is hung on the central rotation part 6b of the float support rod 6, and a side float 1.1, which is a wheel mark erasing device, is hung on the side rotation parts 6a, 6a. The center float 2 is attached for the purpose of stabilizing the planting and adjusting the planting depth, and the link 2a is rotated by the rotation of the central rotating portion 6b, and the float is moved up and down. The planting depth is adjusted by operating the planting depth adjusting lever 7 protruding from the central rotating portion 6b to rotate the central rotating portion 6b. A sensor wire 2b extends from the front part of the center float 2. The sensor wire 2b senses the traveling speed of the aircraft and automatically adjusts the center float 2 up and down. When working at high speed, the mud pushing by the float becomes strong. It reduces the push.

Next, the side float 1 which is a wheel mark erasing device will be described. As described above, the side float 1 is hung on each of the left and right side turning portions 6a of the float support rod 6 so as to eliminate and level the wheel marks made on the topsoil by the wheels of the traveling machine in front. Then, the link 1a rotates up and down by using the side rotation portion 6a as a rotation fulcrum. The link 1a is connected to one end of a cylinder 8 (air, hydraulic pressure, electric, etc.) at the front part, and the expansion and contraction of the cylinder 8 causes the link 1a to rotate. In this embodiment, an air cylinder is used.

During the rice planting work, the soil quality and the water depth of the topsoil may change, which may cause mud pushing by the side floats 1 or the unerased wheels may be left untouched. Particularly in the case of mud pushing, the seedlings with planting are located right next to the side floats, which causes great damage. In order to prevent this, a water depth detection sensor S1 and a topsoil hardness sensor S2 are attached beside the side float 1 of the side turning part 6a, and changes in water depth and topsoil hardness in the working machine are detected and the changes are dealt with. Then, the air cylinder 8 is expanded and contracted to move the side float 1 up and down. FIG. 2 shows the construction of the cylinder operation by the sensor. That is, the control unit C inputs and calculates signals from both sensors, and based on the signals, the electromagnetic valve V is switched to expand and contract the air cylinder 8.

Here, the relationship between the water depth, the surface soil hardness, and the elevation of the side float will be described. First, when the water is deep, the side float 1 is elevated and lowered according to the water depth, and the float is placed on the water surface. Should be located to prevent the occurrence of water push. And when there is little water and the topsoil is a mud-like soft one, the wheel marks will disappear naturally even if it is not strongly suppressed with a float, and conversely when it is strongly suppressed. , Mud pushing will occur. Therefore, in this case, the float must be pulled up. Also, if the topsoil is hard, the marks of the wheels will be left on the topsoil, so it is necessary to lower the float and push the topsoil strongly to even out the topsoil. According to the present invention, the side float 1 is automatically moved up and down according to the change in water depth and soil quality during work to prevent the mud water from being pushed and the wheel marks from being left unerased. is there.

Next, a method of detecting water depth by the water depth detection sensor 9 will be described with reference to FIG. It detects the water depth by comparing the reflection angle α of the light emitted from the sensor on the water surface and the reflection angle β of the light refracted in the water and reflected on the topsoil. The greater the difference is, the deeper the water depth is, and the air cylinder 1a is contracted to pull up the side float 1 and position it on the water surface.

Next, a method for detecting the hardness of the topsoil will be described with reference to FIG. The topsoil hardness detection sensor 10 urges the insertion part 10c downward by the spring 10a, attaches the rotation detection sensor part 10b for detecting the rotation amount to the rotation part, and inserts the insertion part 10c into the topsoil. It is composed. The larger the insertion depth D of the insertion portion 10c, the larger the rotation amount of the rotation portion, and the rotation detection sensor portion 10b detects the rotation amount to measure the soil quality of the topsoil. The larger D is, the softer the topsoil is. In this case, pull up the side float 1 so that mud pushing does not occur, and if the penetration depth D is small, the soil is hard and the wheel marks are sufficiently erased. Therefore, the wheel mark erasing device 1 is lowered to increase the force of suppressing the soil.

The depth of the wheel marks is not always uniform on the left and right wheels. The soil quality of the topsoil may also differ between the left and right. Therefore, the side float 1 is also independently movable to the left and right, and the water depth detection sensor 9, the topsoil hardness detection sensor 10, and the operating system of the air cylinder 8 are separately arranged on the left and right. In this way, make sure there is no difference between the left and right marks.

[0014]

[Effect of the device]

 Since the present invention has the above-described structure and embodiment, it has the following effects. With the construction as claimed, the wheel mark erasing device automatically moves up and down according to changes in water depth and hardness of topsoil during planting work. It is possible to prevent the situation from falling down, and it is possible to surely erase the wheel marks.

[Brief description of drawings]

FIG. 1 is a side view of a rice transplanter.

FIG. 2 is a plan layout view of a float portion F.

FIG. 3 is a side view of a side float 1 which is a wheel mark erasing device.

FIG. 4 is a diagram showing a detection method by a water depth detection sensor 9.

FIG. 5 is a diagram showing a detection method by the topsoil hardness detection sensor 10.

[Explanation of symbols]

 A traveling machine B planting machine 1 side float (wheel mark erasing device) 2 center float 8 air cylinder 9 water depth detection sensor 10 topsoil hardness detection sensor

Claims (1)

[Scope of utility model registration request] 1. A wheel mark erasing device for a rice transplanter, wherein a sensor for detecting water depth and hardness of a field scene is arranged at an arbitrary position of the rice transplanter, and the height of the side float is automatically adjusted based on a signal from the sensor. Automatic height adjustment type wheel mark erasing device for rice transplanters, which is configured to be changed.