JPS6340092Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a support device for side floats in a rice transplanter. Conventionally, various attempts have been made to support the side floats, which are located far away from the main transmission frame and outside the running wheels. However, these have drawbacks such as a complicated structure and a support device that protrudes outward from the fuselage.

This invention eliminates these drawbacks and provides a side float support device for a rice transplanter that is simple and compact in construction, and for this purpose the following technical measures were taken.

That is, there is a main transmission frame 3 on which the prime mover 1 is mounted at the front and a seedling planting device 2 at the rear, and a chain case 5 which is vertically swingable around the drive shafts 4, 4 on both sides of the main transmission frame 3. In a rice transplanter having a pair of running wheels 6, 6 that are mounted on shafts, and a main float 7 whose front part is suspended below the main transmission frame 3 so as to be able to move up and down, the outside of the pair of running wheels 6, 6 is provided. Side floats 8, 8 whose front parts are movable up and down are provided, the front ends of which are rotatably supported on a support rod 9 fixed to the chain case 5 concentrically with the drive shaft 4, A side float support device in a rice transplanter has a structure in which the tip of a side float 8 is supported by the rear end of a connecting rod 10 that is installed obliquely toward the rear.

In the illustrated example, the main power transmission frame 3 is equipped with a prime mover 1 covered by a cover 11 at the front, a seedling planting device 2 at the rear, and a transmission mechanism installed in the main power transmission frame 3 between them. They are connected by.

Reference numeral 12 denotes a main transmission box of the seedling planting device 2, which is connected to the rear end of the main transmission frame 3, and auxiliary transmission boxes 14, 14 for driving planting claws 13, 13 are connected on both sides. Also, reciprocating horizontal movement rods 27 project from both sides of the main transmission box 12 and are connected to the rear seedling tank 15 by a connecting rod 16.

Reference numeral 17 denotes a support frame, the base end of which is fixed to the sub-transmission box 14, and a control handle 18 is provided at the rear. 19 is a lateral movement guide roller for the seedling tank 15.

The running wheels 6, 6 are provided with a chain case 5, which is vertically swingable around the drive shafts 4, 4 of the main transmission frame 3.
5 and is driven and rotated. The vertical swing of the wheels 6, 6 is determined by sensing the depth of the plowing platform by the approach of the vehicle body to the surface of the topsoil. This is a known system that detects a change in the distance between the wheels 6, 6 and the main transmission frame 3 supported by the wheels 6, 6, and moves the wheels 6, 6 up and down to correct the change.

The main float 7 is suspended at its front by flexing links 20, 20 of the main transmission frame 3 and supported at its rear by a shaft 21 so as to be rotatable about the surface of the soil.

The side floats 8, 8 are located outside the running wheels 6, 6, and have their rear portions rotatably supported on a shaft 22.

The support rod 9 is provided on the outside of the chain case 5 concentrically with the drive shaft 4, and the support rod 9 has a connecting rod 10 with the tip of the side float 8 located at the rear of the outside.
The boss 23 is pivotally supported.

Further, the rear end of the connecting rod 10 supports the tip of the side float 8 via a link rod 24, and the side float 8 is configured to be movable up and down about a rear pivot shaft 22. Furthermore, as shown in Fig. 4,
An elongated hole 27 may be provided at the rear end of the connecting rod 10 to be fitted and connected to a pin 28 supported on the upper part of the float 8.

The prime mover 1 is started to drive each part, and the running wheels 6,
Rice planting work is carried out while traveling by the support rod 9, but even if the running wheels 6, 6 are adjusted in vertical swing due to changes in the tiller, the support rod 9 does not allow the vertical swing of the running wheels 6, 6. It is provided in the chain case 5 at a position concentric with the central drive shaft 4, and the side floats 8,
The work can be carried out without any change in the supporting posture of 8.

In addition, in order to connect the support rod 9 and the side float 8 on the rear outside of the support rod 9, a member (boss) that can be fitted with the pivot member (the shaft 25 of the support rod 9 and the link rod 24) is provided in the front and rear. 23 and boss 26) and are connected and supported by the connecting rod 10 installed diagonally, the connecting structure is not only simple, but also the connecting support member protrudes outward from the fuselage. The entire machine body can be made smaller without any problems, and there is no fear that the connecting support part will come into contact with the ridge and be damaged when planting near the ridge or when turning.

In addition, since the connecting rod 10 is installed diagonally toward the outer rear, when the aircraft turns, etc., the connecting rod 10 that is pivotally connected to the support rod 9 plunges into muddy soil, and this joint part becomes muddy. The vertical movement of the side floats 8 and 8 is always accurate without getting caught, weeds or straw debris get caught, and even if this is buried in muddy soil, it will not push the muddy soil and cause the planted seedlings to fall over. To smoothly guide mud to the outside and rear without causing any damage.

Since this device is constructed as described above, the length of the support rod that protrudes outward from the chain case side can be shortened, so that even if the machine is tilted and turned during work, the tip of the support rod remains on the soil surface. This prevents dirt from entering the pivot part of the side float relative to the support rod, and prevents weeds, straw, etc. from getting caught, and the side float can move up and down smoothly without applying any operating resistance to the pivot part. can. Further, the support rods are not bent or damaged, and moreover, the rice transplanter can be rotated in a small amount of time.

[Brief explanation of the drawing]

The figure shows one implementation of the present invention.
2 is a side view, FIG. 2 is a plan view, FIG. 3 is a side view of essential parts, and FIG. 4 is a side view showing another embodiment. In the figure, symbol 1 is the prime mover, 2 is the seedling planting device, 3 is the main transmission frame, 4 is the drive shaft, 5 is the chain case, 6 is the running wheel, 7 is the main float, 8 is the side float, and 9 is the support rod. , 10 indicate connecting rods.

Claims (1)

[Scope of utility model registration request] A main transmission frame with a prime mover mounted on the front and a seedling planting device mounted on the rear, a pair of running wheels mounted on a chain case that can swing up and down around drive shafts on both sides of the main transmission frame, In a rice transplanter having a main float whose front part is suspended below the main transmission frame so as to be movable up and down, a side float whose front part can be movable up and down is provided on the outside of the pair of running wheels, and the side float is concentric with the drive shaft. In a rice transplanter, the front end of which is rotatably pivoted on a support rod fixed to a chain case in position, and the tip of a side float is supported by the rear end of a connecting rod that is installed diagonally outward and rearward from the pivot support. Side float support device.