JPS6215331Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for laying underground a pipe that can be bent to some extent, such as a PVC pipe.

Traditionally, in order to lay gas, electric, water, sewage, etc. pipes underground, the ground was excavated into a trench, and retaining sheet piles were driven into both sides of the trench. After the pipes were laid, the sheet piles were removed and buried. The cut-and-cover method is generally used.

However, with this construction method, ground excavation with a hydraulic excavator, driving of sheet piles, and removal work are required, which is extremely troublesome and reduces pipe installation efficiency, and also causes construction pollution such as vibration and noise. I don't like it.

The present invention was devised in view of the above circumstances, and its purpose is to provide a pipe laying device that can efficiently lay pipes underground.

Embodiments of the present invention will be described below with reference to the drawings.

A main frame 3 is constructed by connecting a pair of left and right gate-shaped frames 1, 1 with a pair of front and rear cross members 2, 2, and a traveling body 4 is provided at the lower end of each gate-shaped frame 1, respectively.

The traveling body 4 includes a bifurcated portion 1a of the portal frame 1,
An idler 5 and a sprocket 6 are provided between 1a,
It has a structure in which a crawler belt 7 is wound around the idler 5 and the sprocket 6, and a travel motor 8 for driving the sprocket 6 is provided.

The pair of horizontal members 2 include a pair of front and rear cylinders 9,
9 is suspended, and its movable portion 9a is pivotally connected to a pair of left and right turnbuckles 10. The turnbuckle 10 has a pair of left and right threaded rods 1 on a fixed body 11.
2 and 12 are screwed together, and each threaded rod 12,
One end of 12 is a pair of front and rear earth retaining panels 13,1.
3 is rotatably connected.

A turnbuckle 10' is provided between the lower portions of a pair of panels 13, 13, and is composed of a fixed body 11 and a pair of left and right threaded rods 12', 12'.

Reference numeral 14 denotes a rotary groove excavator installed on the front edge of a pair of front and rear panels 13, 13, and a sprocket 16 driven by a drive motor 15 installed on the panel 13.
An endless link 21 provided with a digging blade 20 is wound around a lower idler 18 provided on the panel 13 via a bracket 17 and an upper idler 19 provided on the panel 13, forming a so-called trencher.

Reference numeral 22 denotes a tube guide body provided at the front part of the main frame 3, and has a structure in which a cylindrical body is provided between the front parts of a pair of left and right gate-shaped frames 1, 1.

Therefore, in order to start laying the cable, first, as shown in FIG.
Then, the end of the panel 13 is pressed against the ground and the groove A is excavated by the rotary groove excavator 14 while the main frame 3 is run and the panel 13 is sequentially tilted to a horizontal position to excavate the groove A of a predetermined depth.

After the groove A of a predetermined depth is excavated, the panel 13 is placed in a horizontal position, the main frame 3 is moved in this state, and the groove A is continuously excavated by the rotary groove excavator 14.

On the other hand, at the same time, the pipes B connected on the ground are sequentially sent out from the pipe guide body 22 into the groove A, and are laid in the excavated groove A while being bent.

At this time, the trench A is earth-retained by a pair of panels 13, 13, preventing the earth and sand from collapsing, and there is no need to drive or remove sheet piles as in the past, making the pipe installation work that much easier. Become.

Furthermore, since the distance between the pair of panels 13, 13 can be adjusted using the turnbuckle 10, earth retaining action is ensured, and earth retaining can be performed even with grooves of different widths.

The present invention is as described above, and the pipe B can be connected and laid in the trench A excavated by the rotary trench excavator 14 while retaining the earth with a pair of panels 13, and the pipe B can be laid efficiently.

In addition, by expanding and contracting the movable parts 9a of the pair of front and rear cylinders 9, the panel 13 can be moved up and down or tilted, and the rotary trench excavator 1
4 can move up and down or incline together with the panel 13, so the depth of the trench to be excavated can be adjusted to adjust the depth of pipe installation. The pipe can be smoothly excavated to a predetermined depth by tilting the pipe, and then the pipe can be laid by laying the panel 13 horizontally, thereby facilitating the pipe laying work.

Moreover, the pair of panels 13, 13 can be moved in the left-right direction by rotating the pair of threaded rods 12 of the turnbuckle 10 to adjust the distance between them, so it is possible to retain soil in grooves of different widths.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a front view, the second figure is a front view, the third figure is a rear view,
FIG. 4 is an explanatory diagram of the operation. 3 is the main frame, 4 is the traveling body, 13 is the panel,
14 is a rotary groove excavator, 22 is a pipe guide, A is a groove, and B is a pipe.

Claims (1)

[Scope of utility model registration request] A pair of left and right frames equipped with running bodies 4 are connected by a pair of front and rear cross members 2, 2 to form a main frame 3, and a pair of front and rear cylinders 9 are suspended from the front and rear pair of cross members 2, 2, respectively. , each movable part 9a
A turnbuckle 10 having a pair of left and right screw rods 12, 12 is rotatably connected to the left and right, and the left and right pair of screw rods 12, 12 are rotatably connected to a pair of left and right earth retaining panels 13, 13 facing in the front-rear direction. At the same time, a rotary groove excavator 14 is attached to one end of the left and right panels 13, 13 in the front and back direction, and a pipe guide 2 is attached to one end of the main frame 3 in the front and back direction.
1. A pipe laying device characterized by having: 2.