JPS6239601Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a sliding working machine installed at the rear of a tractor, in which the center of the working axis can be changed laterally to the center of the tractor.
For example, it relates to a slide rotary tiller.

The present invention provides a sliding work machine of this type.
The purpose of this is to lower the machining accuracy of the support portion of the sub-beam and to facilitate the sliding of the sub-beam.

In this invention, when the sub-beam is slidably supported on the support body fixed to the support tube of the main beam, a plurality of elastic rollers are interposed between the support body and the sub-beam, and are pivotally supported on the support body. This makes the sliding operation of the sub-beam easier and eliminates the need for high processing precision compared to the conventional system in which the support body and the sub-beam are loosely supported.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

In the embodiment, a rotary tilling work machine 1 is used as a slide work machine, and the rotary tilling work unit is movable left and right with respect to the tractor body.
The rotary tiller 1 is mounted on a tractor 2 so as to be movable up and down by a three-point link mechanism including a top link, a lower link, a lift arm, and the like.

The tractor 2 via the three-point linkage mechanism 3 mentioned above.
A pair of left and right slide tubes 5, 6 are inserted into the support tube 4 connected to the slide tubes 5, 6 and the support tube 4.
constitutes a main beam A, and a sub-beam B arranged parallel to the main beam A, and a main beam A.
The slide tubes 5, 6 and the working part [rotary tiller shaft with many claws 9] 10 are parallel to each other,
The horizontal direction is integrated with the vertical transmission case 7 and the support case 8 to form a frame, and the support tube 4, that is, the working part (tilting shaft) 10 is oriented in the left-right direction (FIG. 2A, It can be moved freely in the A′ direction).

A usual power transmission mechanism is installed in the support tube 4 and the transmission case 7, and the power from the output shaft of the tractor 2 is transmitted to the tilling shaft 10 through this power transmission mechanism, and the tilling shaft 10 is driven. It is becoming more and more common. Further, the support tube 4 and the slide tube 5 are equipped with a slide operation mechanism (not shown) for moving the tilling shaft 10 in the left-right direction.

The slide operation mechanism may be constructed such that the slide tube 5 is extended or shortened by a hydraulic mechanism built into the support tube 4, or may be constructed such that the slide tube 5 is extended or shortened by a hydraulic mechanism built into the support tube 4, or power is applied from the tractor to the tilling shaft via a clutch mechanism on a threaded shaft inside the support tube 4. The slide tube 5 can be configured to be extended or shortened by transmitting the information and rotating the screw shaft by operating the clutch mechanism.

In the present invention, when the sub-beam B is supported movably in the left and right direction by the support tube 4 of the main beam A, a tube integrated with support arms 11 and 12 protruding from both ends of the support tube 4 toward the sub-beam B side is used. The sub-beam B is passed through the supports 13 and 14 of the shape, as shown in FIG.
4, and is supported via a plurality of cylindrical rollers 15 which are rotatably supported. In the embodiment, three rollers 15 are arranged at 120 degree intervals and are made of synthetic rubber with appropriate elasticity, and the support body 13,
The roller 15 is rotatably supported by a shaft 17 supported by a protrusion 16 projecting toward the center from the inner circumferential surfaces 13a, 14a of the roller 14.

C is a working depth adjustment device (depth gauge mechanism)
The tip of the depth frame 18 is connected and supported by a tube 19 integrated with the sub-beam B, the tail wheel shaft 20 is supported at the rear end of the depth frame 18, and the tail wheel shaft 2
A tail wheel 21 is mounted on the lower end of the 0, and a depth adjusting screw mechanism 22 is attached to the tail wheel 21, and the tail wheel 21 is moved up and down by operating the depth adjusting screw mechanism 22 to adjust the working depth (cultivation depth). Can be changed freely.

23 is a rotary cover.

In general rotary tillage work, the center of the body width of the tractor 2 is aligned with the center of the body width of rotary tillage work. If it is desired to make a mark, move the rotary tiller 1 to the opposite side of the obstacle in the direction A or B in Figure 1 in order to drive the tractor 2 close to the obstacle. 1 is driven to the left or to the right with respect to the tractor 2.

When the above-mentioned rotary tiller 1 moves to the left or right with respect to the tractor 2,
As one of the slide tubes 5 and 6 expands and the other shortens, the sub-beam B moves within the supports 13 and 14, but in the present invention, it is supported by the supports 13 and 14 via rollers 15. Sub-beam B moves smoothly.

As described above, the present invention supports the sub-beam through three or more elastic rollers in the support body that is integrated with the support tube of the main beam. The sub-beam moves smoothly, and even if foreign matter enters, it is absorbed by the elastic deformation of the elastic roller, making it easy to move.The sub-beam's sliding motion is always light and easy, and since point contact does not require precision, processing is easy. ,
Furthermore, surface treatment can be performed by painting instead of plating, which has the effect of reducing costs.
In addition, although point contact has the above effect, since the roller is an elastic body, in the event of twisting, etc., the contact surface elastically deforms and becomes a surface, resulting in surface contact, which facilitates sliding support. .

[Brief explanation of the drawing]

FIG. 1 is a side view of a rotary tiller. FIG. 2 is also a plan view. FIG. 3 shows a sub-beam support mechanism according to an embodiment of the present invention, and is a sectional view of the sub-beam and the support body. 1...Rotary tiller, 2...Tractor, A...Main beam, B...Sub beam, 1
3, 14...Support, 15...Roller.

Claims (1)

[Scope of utility model registration request] It has a main beam and a sub-beam parallel to the work axis, and consists of a support tube that connects and fixes the main beam to the tractor body, and a pair of left and right slide tubes that are partially inserted into the support tube and can slide freely in the axial direction. In a slide work machine in which the slide tube, the sub beam, and both ends of the work shaft are integrated through a transmission case or a support case, and the working part is slidable in the left and right directions with respect to the support tube, the sub beam B is connected to the main beam. While passing through the supports 13 and 14 fixed to the support tube 4 of A in the axial direction,
The sub-beam B is moved to the support tube 4 via three or more elastic rollers 15 that are pivotally supported by the supports 13 and 14.
A slide work machine characterized by being supported by.