JPH0215685B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention provides a gas pipe burying machine that effectively discharges earth and sand into a trench dug for burying gas pipes, etc. underground, in order to improve work efficiency and save labor. This invention relates to an automatic reciprocating device.

The present inventor has provided a gas pipe burying machine as described above, and the present invention further provides an automatic reciprocating device for enhancing the functionality of this gas pipe burying machine.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

1 and 2 are partially sectional side views of a gas pipe burying machine according to the present invention, and FIG. 3 is a sectional view taken along the line -' of FIG. 1.

The earth and sand filling machine is equipped with an operating engine section 2 at the top and front of the chassis 1, a tank 3 for loading sand at the rear, a rammer 4 between the two, and a running section 5 such as a crawler below the chassis 1. It is something.

The operating engine section 2 is equipped with an engine and various operating mechanisms, and a screw 7 is provided inside the tank 3 facing the discharge port 6, while impellers 8 and 8' for dispersing dirt are also provided slightly above. ing. Note that the discharge port 6 may be opened and closed by a lid 9 as appropriate.

The rammer 4 has a rod 11 descending from a main body 10, and a hammer 12 is attached to the lower end of the rod 11, and the hammer 12 itself is designed to vibrate up and down.

With this configuration, the trench 1 dug under the ground
3, and work back and forth for a certain distance.

That is, during the forward movement (FIG. 1), the cover 9 of the discharge port 6 is opened, the screw 7, impellers 8, 8', etc. are also rotating, and the earth and sand is discharged from the discharge port 6 into the groove 13. . Then, after going a certain distance, it will go back again, but at this time (Figure 2) the rammer 4
The main body 10 is lowered, and the nail 12 also vibrates up and down, compacting the discharged earth and sand. This back-and-forth movement and the accompanying work are repeated several times to complete the work in the section (sometimes it can be completed in one round-trip).

By the way, in order to save labor, this gas pipe burying machine is equipped with an automatic reciprocating device.

FIG. 4 is an explanatory diagram of this automatic reciprocating device. First, in order to set the range to be reciprocated (usually about 15 m), the forward/reverse switching device 14, 1 like a stake is used.
Hit 4' on the ground. On the other hand, the gas pipe burying machine is also provided with a pair of detection tools 15, 15' that rotate by contacting the forward/backward switching tools 14, 14'. Connect with
A detection piece 17 is installed in the middle.

FIG. 4 shows the state just before the end of forward travel, but if the forward travel continues, the detection tool 15 will come into contact with the forward/reverse switching tool 14, and due to the reaction force, will be rotated as shown by the dashed line. At this time, due to the presence of tie rod 16,
The other detection tools 15 are similarly displaced, and the detection piece 17 is also displaced to the position indicated by the chain line, and the switch 18 is switched to the switch 19. This electrical fluctuation is switched from the forward rotation electromagnetic clutch 21 to the reverse rotation electromagnetic clutch 22 via the converter 20, and the aircraft shifts from going forward to going home. Further, when the vehicle changes from going back to going forward, the detection tool 15 senses the presence of the forward/reverse switching tool 14. Note that these conversion operations can be performed manually by operating the switching lever 23 linked to the tie rod 16, and of course a stopping operation that does not perform either forward or backward movement is also possible. In addition, the configuration shown in FIG. 4 is an example, and the present invention is not limited thereto. It may be something.

Next, since the groove 13 to be filled with earth and sand is almost straight, and the interval at which it must be reciprocated is relatively short, about 15 m, there is no need for a special automatic steering device, but in some cases Even if the groove 13 is curved,
They may also be equipped with an automatic steering system similar to that.

As shown in FIGS. 5 and 6, a guide roller 24 is installed in the front, rear, or both of the parts of the aircraft, which fits tightly into the groove 13, and this forcibly steers the aircraft. It may also be something that allows you to do so.

On the other hand, FIG. 7 shows another example in which the guide roller is divided into two parts 25 and 26, each of which is pressed against the side wall of the groove 13 by a spring 27 or the like, and is The left and right guide rollers 25 and 26 are configured to be able to move independently in the axial direction. A group of switches 28 and 29 that can catch the axial movement of these left and right guide rollers 25 and 26 is installed, and the converter 30
It is connected to the left and right running clutches 31 and 32 of the machine via. As a result, the traveling clutches 31 and 32 on the side where the lateral pressure has decreased are disconnected, and the traveling clutches 31 and 32 on the side where the lateral pressure has been increased are kept connected, so that they follow the bending of the groove 13. be.

As described above, the present invention provides a pair of forward/backward switching tools 1 arranged and set at arbitrary intervals along a gas pipe buried groove.
4, 14' two front and rear detection tools 15, 1
5' are connected with a tie rod 16, and both detectors 15,
A rammer 4 and a sand discharge port 6 are disposed at an intermediate position in the longitudinal direction of the detector 15', and the detector 15,
This invention provides an automatic reciprocating device for a gas pipe burying machine, which is equipped with a clutch mechanism that switches between forward and backward movement of the machine in conjunction with the detection tool 15, 15'. Since the rammer 4 and the earth and sand discharge port 6 are arranged, the forward and backward movement switching tools 14 and 14' can always be placed in a non-backfilling target area that is not affected by the earth and sand backfilling work such as the vibration of the rammer 4, Forward/forward switching tool 1
4 and 14' will not be buried or moved and collapsed.
This has the advantage that the contact detection action with the detection tools 15, 15' is reliable.

Therefore, automatic reciprocating of the gas pipe burying machine becomes possible, which improves work efficiency and saves labor.

[Brief explanation of drawings]

1 and 2 are partial cross-sectional side views of the gas pipe burying machine, FIG. 3 is a cross-sectional view taken at -' in FIG. 1, FIG. 4 is an explanatory diagram of the automatic reciprocating device according to the present invention, and 7 to 7 are explanatory diagrams of the automatic steering system. (code), 3...tank, 4...rammer, 1
3... Groove, 14, 14'... Forward/forward switching device.

Claims (1)

[Claims] 1 Two front and rear detection tools 15, 15' that come into contact with a pair of forward/backward switching tools 14, 14' arranged at arbitrary intervals along the gas pipe buried groove are attached to the tie rod 1.
6, and a rammer 4 and a sand discharge port 6 are disposed at an intermediate position in the longitudinal direction of both the detection tools 15, 15', and a clutch mechanism is linked to the detection tools 15, 15' to switch the forward and backward movement of the aircraft. An automatic reciprocating device for gas pipe burying machines equipped with