JPH0429681Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a reversible plow device, and more particularly to a reversible plow device in which the bottom plow is of a single type.

[Conventional technology]

Reversible plow equipment has been provided to efficiently perform plowing and cultivation work, and its power is being demonstrated in large-scale fields. A typical example of this type of reversible plow device is the one disclosed in Japanese Patent Laid-Open No. 60-98901, which was proposed by the applicant of the present invention. This reversible plow device is equipped with at least two bottom plows (in series) on the top and bottom, and is quite large.

[Problem that the idea aims to solve]

Since the reversible plow device as described above is originally intended for use in large-scale fields, it is unsuitable for plowing work in small-scale fields. In particular, in order to equip two or more bottom plows on the top and bottom, the frame itself needs to be large and sturdy, and in order to reverse the large bottom plow up and down, a high-output reversing drive force is required. The above-mentioned conventional technology cannot be directly applied to a small-sized reversible plow device. Furthermore, as a plow device having an offset mechanism, there is one in which the bottom plow 2 is moved along two parallel offset frames 1 as shown in FIG. Because of this, the overall width increases, and the weight is biased toward the left side in the diagram, resulting in poor balance, and a relatively large balance weight W is required on the right side.
The overall weight is heavy, and it is difficult to apply this type of plow to a small reversible plow device. Furthermore, as shown in Fig. 6, there is a type in which offset is achieved by expanding and contracting the parallel link 3 or turnbuckle 4, but the length (total length) from the tractor to the rear end of the bottom plow 2 is changed by the offset. This is preferable because the traction resistance may become large and the weight balance on the left and right sides is biased as shown in FIG. do not have. Therefore, an object of this invention is to provide a small-sized reversible plow device which is equipped with one bottom plow at the top and one above the bottom frame, and which is equipped with an offset mechanism.

[Means to solve the problem]

In order to achieve the above purpose, this invention is based on a cross shaft installed between the lower links of a tractor and a rotating shaft installed perpendicularly to the cross shaft at the longitudinal center of the cross shaft. , comprising one support frame rotatably attached in the left-right direction and one bottom frame slidable in the left-right direction with respect to the support frame, and single bottom pullers above and below the bottom frame, respectively. The present invention is characterized in that the support frame is provided with an offset mechanism for sliding the bottom frame in the left-right direction, and the bottom frame is configured to rotate and slide in the left-right direction with respect to the rotation axis.

[Effect]

With the above configuration, even though it is a reversible plow device, offset plowing can be performed, the overall width of the entire plow device is small, and the left and right weight balance is good, eliminating the need for heavy balance weights and reducing the weight of the device. In addition, since the support frame is fixed and the bottom frame moves along the plowing width direction,
Due to the offset, the weight balance does not shift rearward, and there is no shift in traction resistance. Furthermore, even when offset, the overall length of the aircraft does not change.

【Example】

Embodiments of this invention will be described below with reference to the attached drawings. First, in FIGS. 1 to 3, the symbol L indicates a pair of left and right lower links as a lift mechanism included in the tractor T, and mounting pins provided at both ends of the cross shaft 1 are connected between the lower links L and L. 1
I am trying to insert A. A base end of a mast frame 2 to which an uplink U of the tractor T is attached is fixed to the cross shaft 1, and a bearing 3 is attached to the base end, that is, the central portion of the cross shaft 1 in the longitudinal direction. is fixed perpendicular to the cross shaft 1. A rotating shaft 4 is mounted on the bearing 3, and a side surface of a short cylindrical support frame 5 is fixed to the end of the rotating shaft 4. The axes are orthogonal in plan view. The cross-sectional shape of the support frame 5 is determined in relation to the shape of the bottom frame. With respect to this support frame 5, the bottom plow 1
The movable frame 10 constituting the bottom frame 10 has an L-shaped arrangement in plan view for attaching the
A is fitted and can be slid left and right. The bottom frame 10 is constituted by the movable frame 10A and the mounting frame 10B of the bottom plow 12 fixed perpendicularly thereto, and the beam 1 is attached to the mounting frame 10B of the bottom plow 12.
Bottom plows 12 are attached to the top and bottom of the plow 1, one each through the bottom plow 1, and each bottom plow 12 is provided with a land side (ground side plate) 13 that promotes stability and straightness of the plow on the cultivated land. Further, a balance weight 14 is attached to the free end of the moving frame 10A, if necessary. The weight of this balance weight 14 is relatively light. The bottom frame 10 is the support frame 5
The offset mechanism 20, which serves as a drive source for sliding left and right against the bottom plow, is attached to the mounting frame 1 of the bottom plow.
Between 0B and moving frame 10A, moving frame 1
Chain 21 stretched along the rear side of 0A
The chain wheel 22 meshes with the chain 21 and has its shaft end supported by the support frame 5. The wheel shaft 22a of this chain wheel 22 is 6
It has a square shaft and is rotated in either the left or right direction by a ratchet spanner (not shown), and this rotation allows the chain wheel 22 to be rotated in either the left or right direction. Tighteners 23, 23 are provided on both left and right sides of the chain wheel 22 to ensure meshing with the chain 21.
is provided, and the rotation of the chain wheel 22 gives a feeding action to the chain 21. One end of the chain 21 is fixed to the free end of the moving frame 10A, and the other end is fixed to the mounting frame 10B, so that the moving frame 10A can be moved left and right through the chain 21 by rotation of the chain wheel 22. . The chain wheel 22 is engaged with an arm-shaped stopper 24 to prevent it from rotating inadvertently, and can be fixed with a lock pin 25. Further, the mast frame 2 is provided with a reverse mechanism 100 for reversing the plow using the lift mechanism of the tractor T. This reverse mechanism 100 operates with the plow device lifted up via the cross shaft 1 and mast frame 2 by the lift mechanism (lower links L, L and up link U) of the tractor T.
A bottom frame 10 is rotated about a rotating shaft 4 by a hydraulic device provided on the tractor T, so that a bottom plow 12 is reversed to an up-down position and locked in that state. In a reversible plow device having such a configuration, when the plow device is attached to the tractor T by a lift mechanism and performs plowing/cultivation work, the plow device normally moves the bottom plow 12 by an offset mechanism 20 as shown in FIG. is located approximately at the center in the width direction of the tractor T, that is, the bottom plow 1
2 is not offset.
When the tractor T reaches the edge of the field after plowing and plowing, the lift mechanism lifts the plow device, and the reverse mechanism 100 reverses the bottom plow 12 while or after turning the machine. Continue plowing and plowing. Then, plow the ridge edge along the ridge N of the field.
When plowing, as shown in Fig. 4, the offset mechanism 20 moves the bottom plow 12 to the most offset position (rear wheel trace of the tractor T) to plow and plow the ridge. can do. When performing the offset operation, lift the bottom frame 12 slightly so that the bottom plow 12 is slightly above the ground.
By rotating the shaft ring 22a of the chain wheel 22 using a ratchet spanner, the movable frame 10A is moved along the support frame 5. Of course, this offset can be similarly performed even when the bottom plow 12 is located in the opposite direction as shown in FIG.

[Effect of the idea]

As is clear from the above explanation, the following effects can be expected from the reversible plow device of this invention. (a) Even though it is a reversible plow device, offset plowing can be easily performed. (b) The width of the entire plow device can be reduced, the left and right weight balance is good, and even if balance weights are required, they can be weighed, making it possible to reduce the weight of the device. (c) Since the support frame is fixed and the bottom frame can move along the plowing width direction, the weight balance does not shift rearward due to offset, and the tractor's traction resistance does not shift. (d) By offsetting, the overall length of the aircraft does not change.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the main parts of this invention with the plow device not offset, Fig. 2 is a front view of the offset mechanism, Fig. 3 is a partial side view of the plow device mounted on a tractor, and Fig. 4 is a partial side view of the plow device mounted on a tractor. The figure is a schematic plan view showing a state in which a plow device is offset to plow and cultivate a ridge, and FIGS. 5 and 6 are explanatory plan views of a device having a conventional offset mechanism. T...tractor, L...lower link, U...up link, N...ridge, 1...cross shaft,
2...Mast frame, 3...Bearing, 4...Rotating shaft, 5...Support frame, 10...Bottom frame, 10A...Movement frame, 10B...Mounting frame, 14...Balance weight, 20... Offset mechanism, 21... Chain, 22... Chain wheel, 22a... Wheel wheel, 23... Tightener, 24...
...stopper, 25...lock pin.

Claims (1)

[Scope of Claim for Utility Model Registration] A cross shaft installed between the lower links of a tractor and a rotary shaft installed in the longitudinal center of the cross shaft so as to be orthogonal to the cross shaft. It is equipped with one support frame that is rotatably attached, and one bottom frame that is slidable in the left and right directions with respect to the support frame, and a single bottom plow is installed on the top and bottom of the bottom frame, respectively. A reversible plow device, characterized in that the support frame is provided with an offset mechanism for sliding the bottom frame in the left-right direction, and the bottom frame is configured to rotate and slide in the left-right direction with respect to the rotation axis.