JPS5910219Y2 - Drainage pipe guide device for trench excavator - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a drainage pipe guide device for a trench excavator.

For example, when improving the drainage of wet fields and converting them into dry fields, as shown in Figure 1, an auger-type trenching machine 1 is towed behind a tractor via a three-point link, 2, excavate a groove 3, and sequentially lay a drain pipe 4 in the groove 3 while guiding it by a guide 6 provided at the rear of the lower part of the auger cylinder 5. A drop tube 8 that opens downward from the tank 7 to the rear of the guide body 6
Make sure to cover it with water-permeable material such as rice husks that have fallen through the water.

At the start of trench digging work, the trench excavator 1 is tilted forward as shown in FIG. Since the guide body 6 also has its holder 9 fixed to the auger cylinder body 5, the guide body 6 moves upward, and as the trench excavator 1 tilts forward, the guide body 6 moves toward the trench bottom 10.
The drain pipe 4 is raised to a considerably higher position than the guide body 6.
Since the drain pipe 4 is laid while being guided at a considerably high position from the trench bottom 10, the permeable material tends to remain between the drain pipe 4 and the trench bottom 10, and the drainage pipe 4 is laid in contact with the trench bottom 10. Therefore, there was a problem in that the drainage pipe 4 was installed at a higher position than the planned position.

This invention solves the above problems, and even when the trench excavator is tilted forward, the drainage pipe can be laid in contact with the bottom of the trench, and the installation position of the drainage pipe is not higher than the planned position. The purpose is to provide a drainage pipe guide device for trench excavators that can
In order to achieve this purpose, in a trench digging machine that excavates a trench and lays a drainage pipe in the trench, a pair of left and right side plates are installed on the rear machine frame of the excavation part, on the inside of which the drainage pipe runs. The groove excavator is equipped with a guide body that can be freely swung and fixed in the working depth direction of the excavation machine, and is located between both plates and guides the drain pipe by coming into contact with the rear side at the bottom rear of the excavation part. It is characterized by the fact that

Hereinafter, the first embodiment of the present invention will be described based on the drawings of FIGS. 2 to 6. Reference numeral 11 denotes a tractor body, 12 a hydraulic system for lifting and lowering a working machine, and 13 a pair of right and left noft arms thereof.

14 is an auger-type trench excavator, which has a tractor body 1;
1 via a three-point linkage mechanism 15 so that it can be raised and lowered freely.

To explain the trench excavator 14, 16 is a gear box, from which an auger-shaped excavating part 17 is rotatably installed, and from this box 16 is a semi-cylindrical auger case with an open front. A machine frame 18 consisting of
A trench 19 is excavated by this.

Reference numeral 20 denotes a drainage pipe equipment section, which is equipped with a winding drainage pipe 21 such as a corrugated pipe having a large number of holes, and is attached to a gear box 16 etc. via a support 22. The pipes 21 are sequentially laid in the groove 19 from the rear of the lower part of the machine frame 18.

Reference numeral 23 denotes a guide holder, which is composed of a pair of left and right side plates 24 through which the drain pipe 21 passes on the inner side. The holder 23 is pivotally supported by the groove excavator 14, so that the holder 23 can freely swing in the vertical direction, that is, in the working depth direction of the trench excavator 14, and extends rearward.

27 is a guide body exemplified by a flanged roller, and the holder 23
The guide body 27 is installed horizontally between the rear side plates 24 and rotatably supported by a pin 28, and the guide body 27 restricts the lateral movement of the drain pipe 21 by contacting the drain pipe 21 with the rear surface side. I will guide you while doing so.

Reference numeral 29 denotes an operation lever for swinging and fixing the guide holder 23. The lower end of the lever 29 is pivoted by a pin 30 between the side plates 14 in the middle of the holder 23 in the longitudinal direction, and the lever 29 is erected. .

Reference numeral 31 denotes a lever support bracket, which projects rearward from the upper rear surface of the machine frame 18. A fixed cylinder 32 is provided downwardly from the rear lower surface of this bracket 31, and a lever hole passing through the bracket 31 in the vertical direction is provided. 33 is provided, and the operation lever 29 is inserted into this lever {L33 so as to be movable in the vertical direction. This lever hole 33 is in the shape of a hollow hole, so that when the guide body holder 23 is swung by the lever 29, , so as not to interfere with its operation.

A fixed pin hole 34 is formed in the fixed running cylinder 32 in the radial direction, and a plurality of pin holes 35 are also formed in the upper part of the operating lever 29 in the radial direction at predetermined intervals. A fixed cylinder 32 is used to maintain the body holder 23 in a horizontal state.
A fixed pin hole 34 of the operating lever 29 and a predetermined pin hole 35 of the operating lever 29
A fixing pin 36 is removably inserted into the.

Reference numeral 37 denotes a water-permeable material tank, which is filled with water-permeable material such as rice husk or saw cut, and is attached to the gear box 16 or the like via a bracket 38.This tank 37 has a downward opening at the rear of the guide body 27. A drop tube 39 is provided, and the water-permeable material dropped from the tank 37 through the drop tube 39 covers the drain pipe 21 laid in the groove 19.

FIG. 7 shows a second embodiment of the present invention, in which the guide holder 23 is not swing-fixed by the operating lever, and the side plate 24 of the holder 23 is attached to the holder mounting bracket 25 using bolts and nuts instead of pins. By fixing the holder 23 in a swingable manner with a fixture 40 such as
It can be fixed and swung freely in the working depth direction.

The embodiment is structured as described above, and when the trenching machine 14 starts trenching work, the trenching machine 14 assumes a forward leaning position as shown in FIG. Permeable material tank 3
The opening of the drop tube 39 of No. 7 moves above the guide body 27, but at that time, in the first embodiment, the fixing pin 36
from the pin hole 35 of the operating lever 29, and swing the guide holder 23 downward with the lever 29 to remove the guide 2.
7 to approach the groove bottom 41 as shown in FIG. If you do trench digging work after that, the drain pipe 21 will be connected to the guide body 27
Since the drainage pipe 21 is laid while being guided at a position very close to the trench bottom 41, there is no risk of the permeable material remaining between the drain pipe 21 and the trench bottom 41. There is no risk that the installation position will be higher than the planned position.

Also in the second embodiment, when the trench excavator 14 is tilted forward, the fastening of the fixture 40 of the guide holder 23 is loosened, and the holder 23 is moved to the position shown by the imaginary line in FIG. By swinging the guide body 27 to approach the groove bottom 41, then fastening the fixture 40 and fixing the holder 23 before digging the groove, the same effect as in the first embodiment can be obtained. obtain.

The trench excavator 14 changes its posture from a forward leaning posture to an upright posture as the trench excavation work progresses, but in both the first and second embodiments, the guide body holder 23 is moved toward its original position. If the drain pipe 21 is swung to the bottom 41, the drain pipe 21 can be laid in contact with the groove bottom 41.

In addition, in the embodiment, the guide body 27 is attached to the guide body holder 2.
Although the guide body 27 is rotatably provided in the holder 23, the guide body 27 may be provided in a fixed state on the holder 23, and the form of the guide body 27 is not limited to the embodiment.

The present invention is as described above, and since both side plates supporting the drainage pipe guide are provided on the rear machine frame of the excavation part so as to be swingable and fixed in the working depth direction of the trench excavator, the trench excavator The guide body can be reliably fixed in a position suitable for guiding the drain pipe in accordance with the posture of It has the advantage that it can be prevented from being higher than the planned position, has a simple structure, and can be installed at low cost.

Further, the side plates themselves do not have a pressing function to press the guide body downward, so the side plates are not twisted, and the drain pipe can always be well guided by the guide body.

Furthermore, since the drain pipe is made to pass between the both side plates, there is almost no possibility that the drain pipe will come off the guide body due to the restriction by the both side plates and the drain pipe will no longer be subjected to the guiding action of the guide body.

[Brief explanation of drawings]

Fig. 1 is a side view showing the conventional example, Fig. 2 is a side view showing the first embodiment of the present invention, Fig. 3 is a side view showing the operating state of Fig. 2, and Fig. 4 is the side view of Fig. 2. An enlarged sectional view of the main part, Figure 5 is the 4th
4 is a sectional view of one hole of the operating lever in FIG. 2,
FIG. 7 is a sectional view of the main part of the second embodiment of the present invention, also showing the operating state. 11...Tractor body, 14...Ditching machine, 15...Three-point link mechanism, 17...
- Excavation section, 18... Machine frame, 19... Groove, 21... Drain pipe, 23... Guide body holder, 27... - Guide body, 29...operation lever, 40...fixing tool.

Claims (1)

[Scope of utility model registration request] In a trench excavator that excavates a trench and lays a drainage pipe in the trench, a pair of left and right side plates are installed on the rear machine frame of the excavation part, along the inside of which the drainage pipe passes, in the direction of the working depth of the trench excavator. A groove capable of swinging and fixing on both sides, and having a guide body supported on both side plates, which guides the drain pipe by contacting with the rear side of the excavation part at the rear of the lower part of the excavation part. Excavator drainage pipe guide device.