JPH046533Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic ridge height adjustment device in a high ridge multi-working machine for a tractor.

In other words, a high-ridge multi-work machine for tractors is constructed by connecting a rotary work machine to the rear of a four-wheeled tractor so that it can be raised and lowered by a lift arm, and a high-ridge shaping plate, multi-film, etc. are connected to the rear of the rotary work machine. When the height of the ridge becomes too high or too low, it can be automatically corrected to the normal height. High ridges whose height changes relatively easily are always corrected to the normal height. However, the present invention provides a structure that enables high-ridge mulching work to be carried out well, enables reliable and good detection of heights, and has a simple structure so that it can be carried out suitably.

Next, the embodiment shown in the drawings will be described.

A is a four-wheeled tractor, and both lift arms 1, which are rotated vertically by a hydraulic device 7, are mounted above a rear case 10 that supports both rear wheels 9, and a control valve 8 of the hydraulic device 7 is connected to a hydraulic lever. 11 so that the control valve 8 can be operated, and a seat 13 is provided above the rear case 10, and a handle 14 is provided in front of the seat 13. It is constructed in the same way as the shape and structure.

B is a rotary working machine, which is equipped with a rotary 15 and a high ridge shaping plate 2 at the front and rear of the lower part, and connects the rear part of the rear case 10 of the four-wheeled tractor A and the front part of the rotary working machine B with the upper top link 16. The lift arms 1 and the lower links 17 are connected by lift links 18, 18, respectively, so that the rotary work machine B can be raised and lowered by rotation of the lift arms 1. It is constructed in the same way as the conventional structure.

Further, an integrated support frame 4a is provided rearwardly extending from the rotary work machine B, and an integrated frame 4 is provided rearwardly from above the rear end of the support frame 4a, and a branch punch is provided vertically from the frame 4. 1
A roll 3a of the multi-film 3 is rotatably installed at the bottom of the guide punch 2 for guiding and guiding the unwinding of the multi-film 3 so as to straddle the high ridges.
0 is hung from the frame 4, and the support frames 21, 21, which extend downward on both sides from the rear of the frame 4, are provided with a film presser ring 22 and a soil cover ring 2 at the front and rear on the lower side of the support frames 21, 21.
3 are respectively mounted on shafts and constructed in the same manner as the conventional structure.

The multi-film 3 on the top of the high ridges is located slightly behind the bottom of the film roll 3a.
A detection roller 5 that can be pressed upward is installed,
The detection roller 5 is formed into a drum shape, and has a supporting punch 24 whose upper part is pivoted so that the frame 4 can rotate freely.
A detection roller 5 is rotatably mounted on the lower part of the support punch 24, and a lower part of a support punch 25 hanging from the frame 4 is fitted into the middle part of the support punch 24, and the detection roller 5 is mounted on the support punch 25. Compression spring 26 that presses downward
One end of a wire 6 extending from a wire receiver 27 suspended from the frame 4 is connected to the middle part of the support punch 5, and the other end of the wire 6 is connected to the upper part of the rotary work machine B. It extends to and is connected to the feedback operation section 12.

Therefore, during work, the rotary work machine B and its entire rear part are lowered by downward rotation of the lift arm 1 as shown in FIG. The tilled mud is shaped by the high ridge shaping plate 2 to form high ridges, and behind it, the mulch film 3 let out from the roll 3a is guided by the guide pestle 20 and coated on the high ridges. After that, multi-film 3
While the film retaining wheels 22, 22 hold down both sides of the soil, the soil covering wheels 23, 23 cover the soil, allowing mulching work to be carried out in the same manner as in the past.

In this state, at the rear where the multi-film 3 is covered, the detection roller 5 is always in pressure contact with the upper part of the multi-film 3 on the top of the high ridge, as shown in Fig. 4, and the high ridge is higher than normal. If the pressure is low, the detection roller 5 will move upward as shown by the arrow X by tensioning the compression spring 26, and if it is low, the detection roller 5 will move downward as shown by the arrow Y due to the elastic pressure of the compression spring 26. , when the support punch 24 rotates as the support punch 24 moves up and down, the wire 6
is pulled or loosened, and when the feedback operation section 12 is operated by the wire 6 and the control valve 8 is operated, the rotary work machine B is moved up and down by the lift arm 1. And the entire rear part thereof is adjusted vertically, and the height of the high ridge is adjusted normally.

In this way, the present invention is a rotary working machine B which is connected to the rear of a four-wheeled tractor A by a lift arm 1 so as to be able to rise and fall freely, and which is connected to the rear of the tractor with a high ridge shaping plate 2, a multi-film 3, etc. In the high-ridge multi-work machine, the rotary work machine B
A detection roller 5 which can be pressed against the multi-film 3 above the top of the high ridges is mounted on an integral frame 4 extending rearward so as to be movable up and down, and linked to move in conjunction with the up and down movement of the detection roller 5. The wire 6 is connected to the control valve 8 side of the hydraulic device 7 that moves the lift arm 1 up and down so as to be able to provide feedback. When the height of the high ridges after the mulch is completed is too high or too low, which is lower than the flattened ridge surface of the flattened plate, the detection roller 5 moves up and down and the hydraulic device 7 This means that the ridges can be automatically corrected to their normal height after the completion of multi-covering while controlling the feedback, and the high ridges whose height is relatively easy to change can always be corrected to their normal height. Multi-film 3
While the detection roller 5 is in pressure contact with the top of the ridge, the height of the high ridge after being pressed by the detection roller can be reliably and well detected, and it can be suitably implemented with a simple structure.

Moreover, since the detection roller can operate via the multi-film without directly touching the soil surface of the ridge, the detection is smooth and the height of the soil surface of the high ridge can be detected more stably after completion. It has excellent features that allow it to be used.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the whole with some parts omitted, FIG. 2 shows a part of FIG. 1, and FIG. 3 shows a part of FIG. 2. 4 shows a cross-sectional view of a portion of FIG. 1. A...4-wheel tractor, 1...lift arm, B
...Rotary work machine, 2...High ridge shaping board, 3...
...Multi-film, 4...Frame, A...Tall ridges, 5...Detection roller, 6...Wire, 7...
...Hydraulic system, 8...Control valve.

Claims (1)

[Scope of utility model registration request] In a high-ridge multi-work machine for a tractor, which is constructed by connecting a rotary work machine B to the rear of a four-wheeled tractor A so that it can be raised and lowered by a lift arm 1, a high-ridge shaping plate 2, a multi-film 3, etc. are connected to the rear of the rotary work machine B. A detection roller 5 that can press against the multi-film 3 on the top of the high ridge is mounted on the integrated frame 4 extending rearward of the rotary work machine B so as to be movable up and down. An automatic ridge height adjustment device characterized in that a wire 6 which is connected in an interlocking manner is connected to a control valve 8 side of a hydraulic device 7 that moves the lift arm 1 up and down so as to be able to provide feedback.