JPH01256695A - Method for propelling pipe - Google Patents

Abstract

PURPOSE:To increase a propellable distance by transmitting a propulsion force applied by a pressure device via propulsion-force transmitting devices which are additionally inserted and placed successively in pipes and which are engaged with each proper number of pipes in the pipe axial direction. CONSTITUTION:After the cutting edge of a pipe 13 is pushed into earth by means of a pressure device 12, pipes 13 are successively added while adding propulsion-force transmitting devices 15 inside the pipes 13, to propel the pipes. The propulsion force applied by means of the pressure device 12 is transmitted to the propulsion-force transmitting devices 15 and distributed to the end portion of each pipe 13 via the engaging portion 18 of the transmission device 15, to transmit a propulsion force necessary for propelling one pipe 13.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a method for propelling a tube.

2. Description of the Related Art A conventional general pipe propulsion method, for example, as shown in FIG. Placed pressurizing device 3
As a result, the pipe 1 itself is used as a force transmitting body to propel the cutting blade 4 provided at its tip and push it out to the other shaft 2.

Problems to be Solved by the Invention However, in the conventional tube propulsion method described above, the tube itself is directly pushed in as a force transmitter, so a tube with high compressive strength in the tube axis direction is required. In the case of propulsion work using plastic pipes with low compressive strength, there is a problem that the length that can be propelled becomes short and the distance between shafts becomes short, increasing the construction cost.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a method for propelling a pipe that can propel even a pipe with a small compressive strength over a long distance.

Means for Solving the Problems In order to solve the above problems, the present invention provides a pipe propulsion method in which a pressure device pressurizes a pipe in the direction of the pipe axis, pushes the pipe into the soil, and sequentially adds and propels the pipe. The propulsive force applied by the pressurizing device is transmitted through propulsive force transmitting devices that are sequentially inserted into the pipe and engage an appropriate number of pipes in the direction of the pipe axis. It is.

Effect With the above configuration, the propulsive force applied by the pressurizing device is distributed to an appropriate number of tubes via the propulsive force transmitting device, and only the propulsive force necessary to propel the appropriate number of tubes is transmitted. , it is no longer necessary to transmit the entire propulsive force to the multiple tubes, and the compressive strength of the multiple tubes in the tube axis direction can be reduced. Therefore, thin-walled pipes with low compressive strength can be propelled over long distances.

EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In FIGS. 1 to 3, a pressurizing device 12 is provided inside the shaft 11.
is arranged, and this pressurizing device 12 is configured to pressurize a tube 13 made of resin in the horizontal direction and push it into the soil 14. Then, the pipe 13 is successively added to the shaft 11 by fitting the socket 13b into the socket 13a, and the propulsive force transmitting device 15 is successively added to the inside of the pipe 13 and inserted into the pipe 13. has been done. This propulsive force transmission IW 115 is formed of a cylindrical main body part 16 made of steel in the tube axis direction, and a locking part 18 fixed to the end of this main body part 16 with a bolt 17. The locking portion 18 is divided into a plurality of arcuate parts. And the locking part 1
8 is interposed between the main body portions 16 that are successively added, and is also interposed between the pipes 13 that are successively added, and engages with the end of the tube in the tube axis direction. .

Further, the locking portion 18 may be provided for each of a plurality of tubes 13, or may be provided for each appropriate number of tubes 13 as appropriate.

A cutting edge 19 is provided at the tip of the joined tube 13.

The operation of the above configuration will be explained below.

First, when burying the pipe 13, the cutting edge 19 is pushed into the soil 14 by the pressurizing device 12, and then the pipe 13 is successively added, and the propulsive force transmission device 15 is added inside the pipe 13 while propelling it. . At this time, pressurizing device 1
The propulsive force applied by 2 is transmitted to the propulsive force transmitting device 15, and distributed to the ends of the multi-tube 13 through the locking part 18 of this propulsive force transmitting device @15 to propel one tube 13. Only the necessary propulsion force is transmitted.

This eliminates the need to transmit the entire propulsive force to the multi-tube 13, and the compressive strength of the multi-tube 13 in the axial direction can be reduced. Therefore, a thin-walled resin pipe or the like having low compressive strength can be propelled into the soil 14 over a long distance. Further, in this embodiment, the propulsion force is transmitted to each single tube 13, but it may be transmitted to each of a plurality of tubes 13 as appropriate depending on the compressive strength of the tube 13. Furthermore, when the tube 13 is propelled, a large resistance force is applied to the cutting edge 19 at the tip, so simply preventing this thrust from being directly transmitted to the tube 13 can greatly reduce the compressive strength of the tube 13. can be achieved. Alternatively, in the pipe 13 having the same compressive strength, the length that can be propelled can be greatly increased compared to the conventional pipe.

Effects of the Invention As described above, according to the present invention, the propulsive force is distributed to an appropriate number of tubes by the propulsive force transmission device, and only the propulsive force necessary to propel the appropriate number of tubes is transmitted. Therefore, it is possible to reduce the compressive strength in the axial direction of the multi-tube, and to increase the possible distance of propulsion.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main part of Fig. 1, Fig. 3 is a sectional view taken along the line A-A in Fig. 2, and Fig. 4 is FIG. 1 is an overall configuration diagram showing a conventional propulsion method. 11... Vertical shaft, 12... Pressure device, 13... Pipe,
15... Propulsion transmission device, 16... Main body, 18.
...locking part, 19...blade mouth. Agent Yoshihiro Morimoto Figure 2 A Figure 3

Claims (1)

[Claims] 1. A method of propulsion of pipes in which a pressure device pressurizes the pipe in the direction of the pipe axis and pushes it into the soil, and the pipes are successively added and propelled. A method for propulsion of a tube, characterized in that the propulsion force is transmitted via a propulsion transmission device which is inserted in a continuous manner and engages an appropriate number of tubes in the direction of the tube axis.