JPH068643Y2 - Plow offset device - Google Patents

Description

[Detailed description of the device]

[Industrial applications]

The present invention relates to an offset device for a plow, and more particularly to an offset device having excellent offset workability.

[Prior art]

The conventionally known plow offset device is one that allows the plow mounting position to be changed relative to the tractor so as not to make residual plowing on the ridges. In the formula, a feed screw device is used, and in the power type, expansion and contraction of a hydraulic cylinder is used to select the position of the plow. However, in order to be able to offset all plows automatically in multiple plows, the tractor that pulls the plows must also use an offset oil pump or a large oil pump capacity. It is realistic to use a manual type. However, the lever type and feed screw type, which are known to manually offset the plow, use the plow offset, in other words, the plow movement to move the lever or rotate the screw. However, if the force is small, it takes a lot of time to move. In addition, the machining cost for grinding the feed screw is also required, the offset device itself becomes expensive, and in the case of a small or medium-sized plow, the offset device occupies a large price. Therefore, the applicant of the present application has already proposed a type in which the plow is offset using a chain, which is often used as a commercial product, as a guide without using a feed screw. Specifically, Patent No. 1185276 (Japanese Patent Publication No. 58-
No. 16841).

[Problems to be solved by the device]

When performing the offset work, the manual offset device as described above needs to move down from the tractor and move to the rear side of the plow. Must move to the furthest place from. Further, even if the operator moves to the rear of the tractor and the plow, if the scaffolding environment is poor, the offset work of the plow may be difficult. Therefore, this invention enables the operator who gets off the tractor to perform the offset work from the side of the plow,
The purpose is to facilitate the work.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention is directed to a horizontal main frame 1 mounted on a tractor, a slide frame 4 movably supported in the left and right directions, and a beam 5 on the slide frame 4. In a plow device equipped with a bottom 6 attached, a chain 16 endlessly stretched on the main frame 1 along the working width direction, and left and right side parts of the main frame 1 for winding the chain 16. And a pair of chain wheels 11 and 15 provided on the slide frame 4 so that either one of the chain wheels 11 and 15 can be rotationally driven and the end of the chain 16 is fixed to the slide frame 4 from both sides in the moving direction. It is characterized by being configured.

[Action]

With the above arrangement, the plow offset device of the present invention allows an operator who descends from the tractor to offset the plow from the side of the plow device.

【Example】

An embodiment of the present invention will be described below with reference to FIGS. In these drawings, reference numeral 1 indicates a main frame mounted on a tractor (not shown), a reinforcing frame 2 is arranged in parallel with the main frame 1, and both frames 1 and 2 are members having a circular sectional shape. Both ends thereof are connected by the side frames 3 (A, B) to form a rectangular frame. A relatively short tubular slide frame 4 is fitted to the main frame 1, and a beam plate 4A extends forward from the slide frame 4 and the beam plate 4A
A flange 4B serving as a load receiver is formed at the tip end of the, and the flange 4B is in close contact with the upper surface of the reinforcing frame 2, and
It can be moved left and right. On the reinforcing frame 2, a top link mounting seat 2A of a three-point link is formed at the upper end of the mast 21, and a lower link mounting pin 2B is also mounted. Then, a bottom 6 is attached to each of the beam plate 4A and the mounting frame 4X extending rearward from the slide frame 4 via a beam 5, and each bottom 6 is attached.
A coulter 61 is located at the front position of the, and a gauge wheel 62 is mounted at the side of the bottom 6 at the rear. Further, in the side frame 3, inside the right side frame 3R, the chain wheel 11 is pivotally supported by the bracket 12, and the screw rod 12A of this bracket 12 is screwed and attached to the nut 13, and from the outside of the right side frame 3R. An adjusting nut 13A is screwed on the end of the screw rod 12A so as to adjust the tension of the chain. A pair of support plates 14 facing each other in the up-down direction is fixed to the outside of the left frame 3L of the side frame 3, and a chain wheel 15 is pivotally supported between the support plates 14 and 14, and a wheel shaft of the chain wheel 15 is supported. The end of 15A is a nut type square shaft. Further, the support plates 14, 14 have a common pin hole 14A,
The rotation of the chain wheel 15 can be prevented by dropping the stop pin 14B into the pin hole 14A. This chain wheel 15 is wound and a chain 16 is introduced inside through the window holes 3A, 3B formed in the left frame 3L, and one end 16X of the chain 16 is passed through the window hole 4Y of the beam plate 4A. The chain wheel 11 is wound and fixed to the beam plate 4A,
The other end 16Y of the chain 16 is fixed to the beam plate 4A. Therefore, by applying a ratchet spanner to the wheel shaft 15A of the chain wheel 15 to rotate it, the chain 16 is fed, and the beam plate 4A is moved to either the left or right direction, so that the slide frame 4 and the beam plate 4A are passed through. To offset the bottom 6 by the desired stroke.
After the offset, the stop pin 14B is dropped into the pin hole 14A formed in the support plates 14, 14 to prevent rotation of the chain wheel 15 and maintain the offset position of each bottom. In the above embodiment, the chain wheel 15 for providing the offset driving force is provided on the left side of the plow, and the chain wheel 11 is arranged inside the right frame 3R, but the left and right positional relationships are reversed. Yes, in this case the chain wheel 11
In addition, a space such as the bracket 12 can be used as an offset space. Further, although the one-way plow is shown in the illustrated embodiment, the present invention can be similarly applied to a reversible plow having upper and lower plows.

[Effect of device]

As is apparent from the above description, the plow offset device of the present invention has a chain 16 endlessly stretched on the main frame 1 along the working width direction, and in order to wind the chain 16, The main frame 1 is provided with a pair of chain wheels 11 and 15 provided on both left and right sides so that either one of the chain wheels 11 and 15 can be rotationally driven, and the end of the chain 16 is attached to the slide frame 4. On the other hand, since it is configured to be fixed from both sides in the moving direction, the offset of the bottom can be performed with a small force from the side of the plow device, and the offset device itself can be constructed at low cost, and even when applied to a reversible plow, The chain will not loosen when the posture is reversed.

[Brief description of drawings]

The attached drawings show an embodiment in which the offset device of the present invention is applied to a one-way plow.
The drawing is the same plan view, FIG. 3 is the oblique view of the III part of FIG. 2, FIG. 4 is the oblique view of the IV part of FIG. 2, and FIG. 5 is the partial sectional view of FIG. 1 …… Main frame 2 …… Reinforcement frame, 21 …… Mast, 2A …… Top link mounting seat, 2B …… Lower link mounting pin 3 …… Side frame, 3R …… Right side frame, 3L …… Left side frame 4 ... Slide frame, 4A ... Beam plate, 4B ...
… Flange, 4X …… Mounting frame 5 …… Beam 6 …… Bottom 11 …… Chain wheel 12 …… Bracket, 12A …… Screw rod 13 …… Nut, 13A …… Adjust nut 14 …… Support plate, 14A …… Pin hole, 14B …… Stop pin 15 …… Chain wheel, 15A …… Axle 16 …… Chain, 16X, 16y …… End

Claims (1)

[Scope of utility model registration request] 1. A horizontal main frame mounted on a tractor.
With respect to (1), the slide frame (4) supported so that it can move in the left-right direction and the beam on this slide frame (4)
In a plow device having a bottom (6) attached via (5), a chain (16) stretched endlessly along a working width direction on a main frame (1), and this chain (16) To wind
A pair of chain wheels (1
1, 15) and one of the chain wheels (11, 15) can be driven to rotate, and the end of the chain (16) has a slide frame.
An offset device for a plow, which is configured to be fixed from both sides in the moving direction with respect to (4).