JPH0150756B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine for laying pipes such as box culverts, etc., and its purpose is to facilitate adjustment and control of the propulsion direction of the machine.

Conventionally, sheet piles have often been used as earth retainers when burying water and sewage pipes such as box culverts, but in recent years a construction machine propulsion method called the open shield construction method has been developed to speed up construction and reduce noise. be.

By the way, box culverts are often buried under or along roads, and are often installed bent. In this case, of course, the laying machine also needs to be bent and propelled.

The present invention has been developed to meet the above-mentioned needs, and its details will be explained with reference to illustrated embodiments.

The laying machine of this invention has a main body A and a movable tail part B.
Consisting of Body A has edges 1 forming the left and right side walls,
1 and the bottom central edge 2, each edge 1,
At the tip of 2, there is a cutting edge 3 that allows for better penetration into the ground.
is formed and has a slight opening angle α symmetrically toward the front to reduce lateral earth pressure during direct excavation or curved excavation. Further, connecting beam members 4 are arranged at the lower end, middle stage, and upper stage to connect the opposing edges 1, 1.

The propulsion jacks 5 are arranged inside the cover in two stages, upper and lower, inside the left and right edges 1 or on both sides of the edges 1 and the central edge 2.

The main body A is provided with a power unit 6 and an operation stand 6' at appropriate positions.

The tail part B consists of left and right tails 7, 7 and tail bottom plates 8, 8 divided into two in the direction of the propulsion shaft, and the tails 7 on both sides and the half tail bottom plate 8 are formed into an L shape. The front edges of the tail bottom plates 8, 8 are such that when the tail portions are bent, the tail bottom plates 8, 8 are connected to the main body A.
In order to prevent the tail from hitting the rear end, the front edges of the tail bottom plates 8, 8 are formed in a conical shape, and a gap is also provided in the opposing parts of the bottom plates 8, 8, so that the tail parts are separated by a small gap. The left and right sides are facing each other. In addition, a bottom plate 9 is provided protruding from the rear end of the main body A so as to partially overlap the tail bottom plates 8, 8 to close a Y-shaped space between the main body A side and the bottom plates 8, 8, from which earth and sand can flow in by heaving etc. It prevents you from doing so. The tips of the side tails 7 are pivotally connected to the rear side edges of the main body A by shafts 10, and are configured to be rotatable in the horizontal direction. In addition, when the main body A is moving straight, a bracket 11 is provided protruding from the tail 7 and a bracket 12 is provided protruding from the main body A, and a lock pin 13 is installed between the brackets 11 and 12 so that the horizontal rotation of the tail portion is restrained and the main body A can easily move straight. It is recommended that you insert .

The upper parts of the main body A and the tail part B each have a structure in which multiple panels are added together to accommodate the depth of the excavation groove, and the connecting beams and central edge are also structured to connect multiple members in the width direction. Can handle the width of excavated trenches.

To explain the operating conditions of the laying machine above, the main body A is propelled by the propulsion jack 5 using the shaft wall or the existing box culvert _C1 as a reaction force receiver, and the earth and sand between the edges 1 and 1 is excavated by an excavator such as a backhoe 14. . On the other hand, a box culvert C ₂ is suspended from the upper opening into the space of the tail part B created by this, and if necessary, the box culvert C 2 can be pushed out of the space of the tail part B by the propulsion jack 5, or the box culvert C 2 can be removed from the previous box in the space of the tail part B. Connect with culvert C ₁ and repeat the same construction.

When it becomes necessary to bend the propulsion direction of the main body A, remove the lock pin 13 and turn the left and right propulsion jacks 5.
The main body A can be bent and pushed by appropriately adjusting the thrust of the main body A. At this time, the tail part B is pivotally connected to the main body A, and the tail bottom plate 8 is divided into two parts, so that the bending of the main body A can be prevented. There is little restraint, and when the main body A bends, the tail part becomes narrower by cos θ, making it relatively easy to adjust and control the direction.

This invention has the above-mentioned configuration, and this pipe laying machine acts as a mountain stop and can be reliably propelled as the ground is excavated, and by suspending the pipe from the upper opening, connections can be made inside the pipe. Work is safe and easy. In particular, since the tail portion is pivotally connected to the main body and there is a small gap between the opposing tails, it is easy to bend and propel the pipe laying machine.

[Brief explanation of drawings]

1, 2, and 3 are a cross-sectional view, a longitudinal sectional view, and a plan view showing an embodiment of the present invention, and FIG.
Figures 5 and 6 a and b are a vertical sectional view and a plan view showing an overview of the state of use. A...Body, B...Tail, C...Box culvert, 1...Edge, 2...Central edge,
3...Blade mouth, 4...Connecting beam material, 5...Propulsion jack, 6...Power unit, 6'...Operation stand, 7...Tail, 8...Tail bottom plate, 9...Bottom plate, 10... ...Axis, 11...Bracket, 12...
Bracket, 13... pin, 14... backhoe.

Claims (1)

[Claims] 1 Consisting of edges on both sides and a central edge at the bottom, connecting beams are provided between the edges on both sides, and the edges have a slight opening angle symmetrically toward the front, and upper and lower propulsion jacks are installed on the inner surfaces of the edges on both sides. The rear part of the main body is made by placing the main body to which the main body is fixed, and the tail part formed in an L shape by dividing the side tail and the tail bottom plate into two in the direction of the propulsion axis into left and right sides with a slight gap between them. A pipe laying machine characterized by being pivotally connected to the pipe so that it can rotate horizontally.