JPS6131603Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to an improvement of a tillage device that can move left and right with respect to the tractor body.

(b) Conventional technology Most tillage devices for tractors are
It is formed with a width that is approximately the same as or slightly wider than the width of the tractor body, and is configured to be connected to the tractor body using attachment means such as a three-point link so that it can be raised and lowered. In order to sufficiently till the area around obstacles such as trees with minimal remaining tillage, it is necessary to position the tractor body very close to the obstacle, which prevents accidents from coming into contact with the tractor body and obstacles. This increases the risk of falls and other various dangers.

For this reason, some conventional devices are configured so that the tilling device can be moved and adjusted laterally with respect to the tractor body, and when plowing around obstacles, the tilling device protrudes largely to one side of the tractor body. There are some systems in which the tractor body is placed in a safe place and the tractor body is moved forward while the required area is sufficiently tilled using a tilling device that protrudes largely to the side of the tractor body (for example,
Utility Model Publication No. 55-30513).

As can be seen in the above-mentioned publication, in the conventional horizontally movable tillage device, rotary pipes are inserted into both the left and right sides of the gear case arranged in the center in the width direction so as to be movable left and right, and the tillage body on the rotary pipe side is fitted with rotary pipes. It has a structure in which the transmission mechanism for transmitting power and the power mechanism for moving the frame pipe left and right, especially the shaft part, are supported across the gear case, which is a non-movable frame, and the rotary pipe side, which is a movable frame. ing.

(c) Problems to be solved by the invention By the way, the left-right movable tillage device can be adjusted to the left and right with respect to the tractor body, and the tillage width can also be changed relatively easily. In the case of soil with a small tilling width, the tilling width can be widened for high efficiency work, and in the case of soil with a large tilling load resistance, the tilling width can be narrowed for high efficiency work. Furthermore, it is expected that there will be an advantage that tilling devices with various tilling widths can be provided relatively easily and at low cost by using a large number of common parts at the production and distribution stage. As mentioned above, the structure is such that the transmission mechanism to the tiller and the shaft in the drive system for left and right movement are supported across the non-movable frame and the movable frame.
In order to rearrange the movable frame side, that is, the tiller side, to one with a different tilling width, it is impossible to do so without first disassembling the transmission mechanism, etc., so it is actually extremely difficult for users or those at the distribution stage to do so. be.

Furthermore, in conventional horizontally movable tilling equipment, the movable frame side is simply installed in a gear case in a short span and slides from side to side, so the entire equipment is not supported by the frame structure against lateral vibration and upward thrust loads applied during operation. Another drawback is that it lacks strength, which can cause twisting and deformation in the operating parts.

Therefore, the present invention was developed with the aim of providing a tilling device that can move left and right, yet has sufficient frame strength, and can easily change the tilling width.

(d) Means for solving the problem In order to achieve the above object, in this invention, the left and right outer cylinders are connected to both the left and right sides of the PTO gear box, and one outer cylinder is connected to the PTO gear box. A left-right moving mechanism gear box is interposed between the outer cylinders, and a sub-beam connecting body is extended from the outer end of each outer cylinder, and these constitute a transmission part of the non-movable frame.
A drive unit that is assembled and supported on the transmission part side, with an inner cylinder and a sub-beam on the power passive part side, which are configured separately from the transmission part, supported by the outer cylinder and sub-beam connection body on the transmission part side. The tilling device is configured such that the passive shaft side can be interlocked and connected to the shaft and the operating shaft of the left-right moving mechanism using an insertion/removal structure.

(E) Function Therefore, according to the present invention, the power passive part side that is movable left and right is supported over a long span by the outer cylindrical part of the non-movable frame transmission part, and the power passive part side is also allowed to move left and right. In this state, the sub-beam is also supported on the non-movable transmission part side, so the strength against lateral vibration and thrust loads applied during work is significantly improved.

In addition, the drive system of the tilling shaft and the axis of the left/right movement mechanism system are supported and installed on the non-movable transmission part side, and the receiving side of the power passive part is connected to these by an insertion/extraction structure, so the tilling width is It is now much easier to construct a tillage device by rearranging and equipping the power transmission part with different power-driven parts on the transmission part side. Of course, it is possible to provide equipment with various tilling widths at low cost by simply changing a few parts on the passive side, but it is also relatively easy for general users or workers in the distribution process to change the tilling width. For example, it is possible to change the tillage width to suit the soil conditions at the site of use after confirming the use.

(F) Embodiments Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

First, among tillage devices that can automatically move left and right as needed during work, the mechanical structure is roughly as follows.

A left-right movable gear box 2 is arranged adjacent to one side of the PTO gear box 1 located in the center, and outer cylinders 4, 4 are extended on the outside of each side, and each outer cylinder 4, At the outer end of 4, there are sub-beam connecting bodies 7, 7.
are arranged in series, and the non-movable frame of the transmission part 25 is framed by these.

On the other hand, the power passive parts 26, 26 installed in the transmission part 25 connect side supports 5, 5 to the respective outer ends of the inner cylinders 6, 6 which are slidably fitted into the outer cylinders 4, 4. with both side supports 5,5
The space between the two side supports 5, 5 is connected by a sub-beam 8 which is slidably supported by the sub-beam connecting bodies 7, 7, and is formed into a frame.
A tilling shaft 9 is horizontally suspended between the lower ends of the tiller.

And each inner cylinder 6, 6 of the power passive part 26, 26
is fitted into the outer cylinders 4, 4, and the sub-beam 8 is fitted and supported by the sub-beam connecting bodies 7, 7.
The power passive parts 26, 26 will be attached to the transmission part 25 side, and the power passive parts 26, 26 side equipped with the tilling shaft 9 will be approximately 200 to 400
It becomes possible to move left and right within a range of mm.

As a result, the tilling device is configured to be able to move left and right while keeping the width constant, but the drive mechanism 10 for the tilling shaft 9 is on one side support 5 side, and the drive mechanism 10 for the tilling shaft 9 is on the other side support 5 side and can be moved left and right on the other side support 5 side. The mechanism 11 is built into the outer cylinders 4, 4 and the inner cylinders 6, 6 so that their functions will not be impaired even if their relative lengths are changed.

In the drive mechanism 10 of the tilling shaft 9, a drive shaft 13 is spline-coupled to a spline tube (receiving portion 12) provided in the inner tube 4, and this spline tube 12 is connected to a transmission shaft 16 to which a sprocket 15 in a transmission tube 14 is fixed. is fixed to. Further, the sprocket 15 is linked to a sprocket 18 fixed to the tilling shaft 9 by a chain 17 or the like.

In the left-right moving mechanism 11, a bevel gear 19 is fixed to a drive shaft 13 in the left-right moving gear box 2, and in response to this, an idle bevel gear 20 and further a bevel gear 21 are provided on an extension of the drive shaft 13 so as to be relatively rotatable on a screw shaft 22. It is loosely fitted. A slide clutch 23 is spline-fitted to a screw shaft 22 at an intermediate position between both bevel gears 19 and 21, and this slide clutch 23 can be switched between both bevel gears by switching with an operating lever A extending outside the left-right moving mechanism gear box 2. The structure is such that it slides into engagement with 19 and 21. Furthermore, the end side threaded portion 22 of the threaded shaft 22
a is screwed to a female screw (receiving portion 24) fixed to the side support 5.

As described above, by engaging the slide clutch 23 with either of the bevel gears 19, 21, the tilling device is moved from side to side.

By the way, in this invention, in order to cope with changes in the dimensions of the tilling width, the outer cylinders 4, 4 and the sub-beam connecting bodies 7, 7 fixed thereto are used as the transmission part 25 of the non-movable frame, even if the dimensions are different. Make it unchanged. On the other hand, the inner cylinders 6, 6, which are slidably supported by the sub-beam connectors 7, 7 and fixed to the side supports 5, 5, serve as power passive parts 26, 26.
This is used as a changing member when changing dimensions. In the case of the left-right moving mechanism 11, the screw shaft 22, which is an operating shaft, and the drive shaft 13 are fixed members, and a female screw screws into the screw shaft 22 and is fixed integrally with the side support 5. The arrangement is such that 24 is a changing member. Note that the female thread 24 extends approximately along the screw shaft 22.
It is designed to allow relative displacement in the range of 200 to 400 mm.

As a result, even when changing the dimensions of the tilling width, the inner cylinders 6, 6, the spline cylinder 12 and the female thread 2
4.It can be easily handled by combining items with different dimensions. Of course, sub beam 8,
It is necessary to use tilling shafts 9 of different lengths, and these shafts are already available in various sizes.

As described above, in assembling tilling devices with different tilling widths, the power transmission section 25, which has a large number of parts, can be made into an unchanging common member, so the power passive section 26, 26 has a simple configuration for changing the width dimension.
It is possible to make it wider or narrower by simply changing a limited number of parts.

This greatly contributes to the sharing of manufacturing jigs, simplification of parts management, and reduction in assembly man-hours, thereby contributing to a significant reduction in manufacturing costs.

(g) Effect of the invention As is clear from the above explanation, the tilling device of the invention has power passive parts 26, 2 that move from side to side.
6 side is supported over a long span by the outer cylinders 4, 4 of the non-movable frame transmission section 25, and at the same time is supported on the transmission section 25 side while being connected and reinforced by the sub-beam 8, so that the lateral side applied during work is The strength against uplift loads due to swing loads and tillage impact has been significantly improved, and the operating parts are durable and do not twist or deform.

Further, most of the mechanism for moving the power passive parts 26, 26 side left and right and the mechanism for operating the tilling shaft 9, especially the shaft part, are supported on the transmission part 25 side, and the power passive part 26, 26 receiving portion 12,
Since the 24 insertion/removal structure is used to interlock and connect, there are many common parts when changing the tilling width, and it is also easy to install and remove. It is much easier to construct a tillage device by rearranging and equipping the section 25 side compared to conventional devices, and in the manufacturing stage, the transmission section side is commonly used and only a small part of the power passive section side is used. Not only can we provide tillage equipment with various tilling widths at a low cost by simply changing the parts of the machine, but also it is possible to change the tilling width relatively easily even by general users or workers in the distribution process. Therefore, even if, for example, it is confirmed that the tilling width is inappropriate at the site of use, it has become a convenient tool that allows you to change the tilling width on the spot with relative ease.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a specific example of the present invention, FIG. 2 is a sectional view of a main part, and FIG. 3 is a plan view. Code, 1... PTO gear box, 2... Lateral movement mechanism gear box, 4... Outer cylinder, 6... Inner cylinder (power passive part), 7... Sub-beam connection body, 8... Sub-beam, 12... Spline cylinder (receiving part), 13... Drive shaft, 22... Screw shaft (operating shaft), 24... Female thread (receiving part), 25... Transmission part of non-movable frame, 26...
...Power passive part.

Claims (1)

[Scope of utility model registration request] Since the left and right outer cylinders 4 are connected to both the left and right sides of the PTO gear box 1, one outer cylinder 4 is connected to the PTO gear box 1.
A left-right moving mechanism gear box 2 is interposed between the gear box 1 and the gear box 2, and furthermore, sub-beam connecting bodies 7, 7 are extended from the outer ends of the respective outer cylinders 4, 4, so that the non-movable frame is connected to the gear box 1. A transmission section 25 is configured, and the transmission section 25
The inner cylinders 6, 6 and the sub-beam 8 on the side of the power passive parts 26, 26, which are configured separately from the transmission part 25,
The drive shaft 13, which is supported by the side outer cylinders 4, 4 and the sub-beam connecting bodies 7, 7, and which is assembled and supported on the transmission part 25 side, and the actuating shaft 22 of the left-right moving mechanism, A tillage device characterized in that the receiving parts 12 and 24 are configured so that they can be interlocked and connected in an insertion/removal structure.