JPS598B2 - 3-row walking rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a three-row walking type rice transplanter in which three seedling planting tools for taking out seedlings from a seedling stand that reciprocates left and right are arranged side by side in the lateral direction of the machine body.

Conventional 3-row walking type rice transplanters had one large soil leveling float placed in front of the three seedling planting tools, so the mud pushing at the front of the float was a dog and it flowed down the side of the float. There is a drawback that the adjacent planted seedlings are washed away by muddy water, so it is still necessary to cut out the rear part of the float and place the seedlings on the left and right outside of the fuselage in order to pass the seedling planting tool through the notch and plant the seedlings. Although muddy water from the side of the float flows into the area where the planting tool passes, muddy water does not flow into the area where the seedling planting tool located in the center of the aircraft passes, so when planting seedlings, there is no risk of the seedlings getting caught in the claws. The present invention solves the above-mentioned drawbacks, and also prevents the planting depth from varying due to the slope of the machine due to the unevenness of the tiller. The purpose is to provide a 3-row walking rice transplanter.

The characteristic configuration of the 3-row walking rice transplanter of the present invention is that three seedling planting tools for taking out seedlings from a seedling table that moves back and forth from side to side are arranged side by side in the lateral direction of the machine and are located in the center of the machine. A pair of left and right soil leveling floats are installed on both the left and right sides of the seedling-planting device to level the soil where the seedlings will be planted by the seedling-planting devices located on the left and right sides of the machine. Leveling the area 1
Two ground leveling floats are arranged at the front of the machine, and a pair of left and right running floats that can swing up and down are arranged between the ground leveling floats arranged at the front of the machine and a pair of left and right ground leveling floats arranged at the rear of the machine. A two-wheel, three-float type three-row rice transplanter is constructed by disposing driving wheels, and a sensing body is configured to allow the soil leveling float disposed at the front of the machine to swing vertically to detect vertical displacement of the vehicle body. The ground leveling float as a sensing body and a lifting device for driving drive wheels are interlocked and connected, and the pair of left and right driving drive wheels is moved in response to a detection result of the ground leveling float as a sensing body. The vehicle body is configured to be able to rise and fall freely up and down, and the running vehicle body is composed of the ground leveling float as the sensing body and a pair of drive wheels for running on the left and right, and the seedling platform and the seedling planting tool that move back and forth from side to side, as well as the left and right wheels located at the rear. A seedling planting device is constituted by a pair of ground leveling floats, and the seedling planting device is connected to the traveling vehicle body so as to be able to roll freely around the axis in the longitudinal direction of the vehicle body, and the following effects can be achieved from such a structure. be effective.

In other words, because the soil leveling floats for the three seedling planting tools were separated, the mud pushing by the front part of the floats was reduced, and the force of muddy water flowing along the sides of the floats was reduced, washing away adjacent planted seedlings. In addition, because the soil leveling floats for the three seedling planting tools are arranged in a triangular shape, it is possible to guide muddy water to the seedling planting tool located in the center of the machine. The separation of the seedlings from the planting claws has improved, and the seedlings can be planted successfully.

The ground leveling float disposed at the front of the machine body is configured to be able to swing up and down, and is configured as a sensing body for detecting the vertical displacement of the vehicle body, and the leveling float as the sensing body and an elevating device for driving drive wheels are configured. In response to the detection results of the sensing body, the pair of left and right running drive wheels can be raised and lowered freely. , the soil leveling float as a sensing body descends relative to the machine body to detect the vertical displacement of the vehicle body, and conversely, when the tiller is depressed, the soil leveling float serving as the sensing body rises relative to the machine body. By detecting this change, and by raising and lowering the wheels based on the detection results, it has become possible to prevent fluctuations in planting depth.

In this way, if the leveling float placed at the front of the machine is configured as a sensor that detects the vertical displacement of the car body to automatically control the elevation and descent of the wheels, the pair of left and right leveling floats located at the rear of the machine When one of the floats runs aground on raised mud, such as a wheel track, the sensing float is activated and lowers the wheel. Since it is configured to allow rolling, it is possible to prevent shallow planting due to the sensor not working and lowering the wheels.

Embodiments of the present invention will be described below based on the drawings.

A traveling vehicle body is constituted by a pair of left and right traveling drive wheels 4, 4 mounted on a cylindrical frame 2 with an engine 1 in the front via a transmission case 3 that can be vertically swung and fixed. Three seedling planting tools I, which move up and down along a fixed rotation trajectory, are attached to the machine frame 6 equipped with a control bundle 5 extending in parallel in the lateral direction of the machine, and Seedlings can be harvested by attaching an inclined seedling platform 8 that reciprocates in the lateral direction of the machine in conjunction with the movement of the seedling planting tool 1, with the seedling take-out port facing the rotation trajectory of each of the planting tools I... A planting device A is constructed, in which the seedling planting device A is attached to the rear of the self-propelled vehicle body, and a rotary transmission shaft 9 passing through the cylindrical frame 2 is connected to the end thereof via an attached bevel gear 10. A number of seedlings installed inside the machine frame 6 are interlocked and connected to the input gear 11.

By sliding on the seedling planting mud surface B, the vehicle body is supported on the ground in cooperation with the wheels 4, 4, and the seedling planting area of the seedling planting tool T located at the center of the vehicle body is leveled in advance. One ground float 12 is connected to the self-propelled vehicle body, and a mud surface B with seedlings is planted.
A pair of left and right grounding floats 13 slide on the top to support the weight of the machine in cooperation with the float 12, and also to prepare the ground in advance for the seedling planting locations of the seedling planting tools 7, 7 located on both the left and right sides of the machine. .13 is connected to the seedling planting device A.

Thus, three rows of seedlings can be planted while the vehicle is traveling with both wheels 4, 4 in contact with the hard disk C.

To attach the seedling planting device A to the vehicle body, as shown in FIG.
4 is fitted into the rear end of the cylindrical frame 2 so as to be relatively rotatable around the axis X in the longitudinal direction of the vehicle body, thereby preventing rolling of the self-propelled vehicle body to the seedling planting device around the axis X. A removable pin 17 is inserted between the vehicle body side member 15 attached to the cylindrical frame 2 and the seedling planting device side member 16 attached to the cylindrical body 14.
The structure is such that the rolling can be prevented in the inserted state.

In other words, if the hard disk C has an inclined part or unevenness in the left-right direction of the car body and the car body leans left and right, the pin 17 is pulled out and the grounding flow of the planting part 13 as shown in FIG. , 13 causes the seedling planting device A to roll against the vehicle body, and the flow N3, 13
The above-mentioned rolling is performed automatically and without delay by follow-up floating sliding on the planting mud surface B of the seedlings, without causing any excess or deficiency in the amount of adjustment, and the planting depth in all the seedling planting tools I is made uniform. The pin 17 is attached during non-working driving such as road driving to prevent the vehicle body from becoming unbalanced due to rolling of the seedling planting device A due to driving vibrations.

In addition, in order to prevent the seedling planting device from tilting from side to side due to the transmission by the rotating shaft 9, the left and right weights of the seedling planting device A are varied in a direction that cancels out the rolling force of the seedling planting device caused by the transmission. It's a shame.

Both transmission cases 3, 3 are configured to be able to swing vertically around a horizontal axis on the side opposite to the side where the wheels are attached, and the transmission cases 3, 3
A hydraulic cylinder 18, which is a lifting device for integrally lifting and lowering both axles 4, 4, is provided, and the front float 12 is configured to be able to swing up and down. The control pulp 19 is interlocked with respect to the float 12
The vertical displacement of the vehicle body is detected using a sensing float, and based on the detection result, the wheels 4, 4 are automatically controlled to raise and lower to maintain a constant height of the vehicle body above the ground.

Note that the pin 1T can be changed to various mechanisms such as a hydraulic cylinder that can fix the seedling planting device A to the self-propelled vehicle body in a non-rollable state, and these are collectively referred to as the fixing mechanism 17.

[Brief explanation of drawings]

The drawings show an embodiment of the 3-row walking type rice transplanter according to the present invention, in which Figure 1 is an overall side view of the walking type rice transplanter, Figure 2 is a plan view thereof, and Figure 3 is a sectional view of the mounting structure. , FIG. 4 is an explanatory diagram showing the rolling state of the planting device, and FIG. 5 is a schematic diagram of the wheel elevation control mechanism. 4...Wheel, I...Seedling planting tool, 8...
...Seedling stand, 12.13...Float,
17... Fixing mechanism, 18... Lifting device, A... Seedling planting device.

Claims (1)

[Claims] 1. Three seedling planting tools 1 for taking out seedlings from a seedling platform 8 that moves back and forth from side to side are arranged in parallel in the lateral direction of the machine, and on both sides of the seedling planting tool I located in the center of the machine, A pair of left and right soil leveling floats 13° 13 are provided to level the ground where seedlings are planted by the seedling planting tools 1 and 7 located on both outer sides, and level the ground where the seedlings are planted by the seedling planting tool 7 located at the center of the machine. One soil leveling float 12 is disposed at the front of the machine, and a vertically swinging structure is provided between the ground leveling float 12 disposed at the front of the machine and a pair of left and right ground leveling floats 13. A pair of left and right running driving wheels 4, 4 are arranged to constitute a two-wheel, three-float type three-row rice transplanter, and a soil leveling float 12 arranged at the front of the machine body is configured to be able to swing vertically. It is constructed as a sensing body that detects the vertical displacement of the vehicle body, and also includes a ground leveling float 12 as this sensing body and a lifting device 1 for driving drive wheels 4, 4.
8 are interlocked and connected, and the pair of left and right traveling drive wheels 4, 4 are configured to be able to move up and down in response to the detection result of the ground leveling float 12 as the sensing body, and the ground leveling float 12 and the ground leveling float 12 as the sensing body A traveling vehicle body is constituted by a pair of left and right driving drive wheels 4, 4, and a seedling platform 8 and a seedling planting tool 7 that reciprocate left and right, and a pair of left and right soil leveling floats 13, 13 located at the rear. A three-row walking type rice transplanter characterized in that a seedling planting device A is configured, and the seedling planting device A is connected to a traveling vehicle body so as to be able to roll freely around the longitudinal axis of the machine body.