JPH0214705Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention is a propulsion method in which a humuum pipe, etc. is buried underground while excavating the ground. This invention relates to a piping unit that facilitates the connection of various types of pipes, such as mud feeding pipes and mud removal pipes for discharging excavated earth and sand.

(Background of the idea) Traditionally, the mud propulsion method has been equipped with a feeder for discharging excavated soil, an injection agent supply pipe to reduce frictional resistance between the mud drainage pipe or hump pipe and the ground, and an excavation machine. Various types of pipes such as drain pipes for discharging water that flows into and accumulates in the room must be added one after another each time a hume pipe is connected in a shaft.

For this reason, when adding bolts, it is necessary to remove the bolts from the existing pipes connected with bolts, etc., insert the pipe to be added in that part, and then tighten the bolts again for each pipe. It takes a lot of effort to fit the open ends of the tubes together and to connect all the tubes individually, and the smaller the diameter of the Hume tube, the more difficult the connection work is.

In addition, when the hume pipe is propelled a specified length and burying is completed, various types of pipe bodies such as conveyance and mud removal pipes are pulled out from the shaft. There was a problem that the inner surface of the tube was damaged by rubbing.

(Purpose of the invention) This invention aims to eliminate such problems.
It allows easy connection of various types of piping, such as conveyance, mud removal pipes, and injection agent supply pipes, and also enables smooth insertion and removal of buried pipes, such as fume pipes, without damaging the buried pipes. The present invention provides a piping unit for the propulsion method.

(Structure of the invention) In order to achieve the above object, the piping unit in the propulsion construction method of the invention is designed to transport various pipes such as sludge pipes in parallel between the front and rear flange bodies that can be inserted into buried pipes such as hume pipes. It is a piping unit in which the front and rear ends are supported by the front and rear flange bodies, and mounting parts such as bolts and nuts are provided on the front and rear flange bodies, and when the piping units are connected in series, the above-mentioned The structure is configured so that various pipe bodies can be connected simultaneously in a watertight manner, and a sliding member such as a sled member or several wheels having the same curved surface as the inner circumferential curved surface of the buried pipe is installed at the lower end of at least one of the front and rear flanges. It is characterized by the fact that it is provided.

(Explanation of Embodiments) The embodiments of the present invention will be explained with reference to the drawings.
2 is a mud feeding pipe, 2 is a mud draining pipe, 3 is a lubricant supply pipe, and 4 is a drainage pipe, and these pipe bodies 1 to 4 are formed to have the same length as a buried pipe 5 such as a humid pipe. These tube bodies 1 to 4 are arranged horizontally side by side, and their front and rear ends are inserted into and supported by front and rear flanges 6 and 7.

The state in which the tube bodies 1 to 4 are attached to the front and rear flange bodies 6 and 7 is such that the rear end of the large diameter short tube 8 is fitted onto the front end of the tube body and fixed together. The open end of the short tube 8 is opened to the front side of the flange body 6 by fitting into a mounting hole 9 drilled at a predetermined portion of the rear flange body 6, and the rear end of the tube is connected to the rear flange body 7. It is inserted into a mounting hole 9 drilled at a predetermined location, and the length of its protruding end is set to a size that allows it to be inserted into the short tube 8.

Reference numeral 10 denotes a sled material fixed to the lower surface of the front flange body 6, whose lower surface is formed into the same curved surface as the inner peripheral curved surface of the buried pipe 5, so that it can slide smoothly on the inner surface of the buried pipe 5. .

11 is an O-ring attached to the inner peripheral surface of the short pipe 8;
It is fitted into the circumferential groove 12. Further, the rear end outer peripheral surface of each of the tube bodies 1 to 4 is chamfered 13 to facilitate insertion of the tube.

Reference numeral 14 indicates mounting holes for bolts, etc., which are penetrated at multiple locations on the outer periphery of the front flange body 6, and these mounting holes 14
Correspondingly, a plurality of mounting holes 15 are formed through the outer circumferential portion of the rear flange body 7.

Reference numeral 16 denotes a gutter-shaped receiving metal fitting attached to one side of the front and rear flange bodies 6, 7, which receives wiring for energizing the drive source of the excavator, etc.

The piping unit A configured in this manner is inserted and arranged in a buried pipe 5 such as a humm pipe that is propelled following a leading pipe having an excavator.
When connecting the next buried pipe 5 in the shaft,
The piping unit A was inserted while the sled material 10 was in sliding contact with the lower inner peripheral surface of the buried pipe 5, and the short pipes 8 of each of the pipe bodies 1 to 4 fixed to the front flange body 6 were connected to the existing buried pipe 5. The pipes 1 to 4 are inserted into the rear ends of the pipes 1 to 4 protruding from the rear flange body 7 of the piping unit A installed in The rear flange body 7 of the front piping unit A and the front flange body 6 of the succeeding piping unit A are connected by inserting bolts into the mounting holes 14 and 15 and fastening them with nuts.

FIG. 3 shows another embodiment of the piping unit A, in which the front and rear flange bodies 6, 7 in the previous embodiment
Independent ring bodies 17 and 18 are fixed for each tube body 1 to 4 at the mounting position of these front and rear ring bodies 1.
Front and rear flange bodies 6a, 7a are arranged inside the tubes 7, 18, and each of the tube bodies 1 to 4 is slidably inserted into the front and rear flange bodies 6a, 7a without being fixed.

With this configuration, when connecting each of the pipes 1 to 4 of the piping unit A that follows to each of the pipes 1 to 4 of the front piping unit, it is possible to connect the individual front and rear pipes to each other. In comparison with the case where all the tube bodies 1 to 4 are connected at the same time as in the embodiment described above, the fitting resistance received at the O-ring 11 can be made smaller.

FIG. 4 shows still another embodiment of the present invention. In the previous embodiment, the tube bodies 1 to 4 were connected by fitting the short tube 8 and the rear projecting end, but in this embodiment, Each pipe body 1 ~ without using short pipes
Both ends of the tube 1 are directly inserted and supported by the front and rear flange bodies 6b and 7b, respectively, and each tube body 1 is attached to the outer surface of either flange.
A circular groove 19 surrounding the outer periphery of the open end of the tubes 1 to 4 is cut, and an O-ring 20 is fitted into the circular groove 19 so that when the flanges are joined together, the tube bodies are watertightly communicated with each other.

In the above embodiment, the movement of the piping unit A is facilitated by the sled material 10, but as shown in FIGS. 3 and 4, several wheels are provided on the bottom surface of one flange body 21 may be attached, in short, a member that slides on the inner circumferential curved surface of the buried pipe 5 may be provided at the lower end of at least one of the front and rear flange bodies 6, 7.

(Effects of the invention) As described above, according to the piping unit in the propulsion method of the invention, between the front and rear flange bodies 6 and 7 that can be inserted into a buried pipe such as a hume pipe, a feeding pipe and a mud removal pipe of the same length as the buried pipe are provided. Erection of various pipes such as in parallel,
Since they are supported and integrated, transportation and other handling for connecting various pipe bodies can be done at once, and when connecting, sliding members such as sled members and wheels installed at the lower end of the flange body can be used. can be easily inserted into the buried pipe while sliding it on the inner surface of the buried pipe, and since the various pipe bodies are always arranged side by side at a predetermined height position, each pipe body of the piping unit that has already been installed can be easily inserted into the buried pipe. The front end opening of each pipe to be connected can be automatically matched to the rear end opening, and furthermore, the connection of each pipe can be made by tightening the flanges with bolts etc. It is also possible to do both at the same time, allowing the connection work to be done quickly and efficiently.

In addition, as mentioned above, since sliding members such as sled members and wheels are provided at the lower end of at least one flange body, the piping unit can be easily removed after the buried pipe installation is completed without damaging the buried pipe. It is something that can be done.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a longitudinal side view thereof, Fig. 2 is a simplified longitudinal sectional front view showing the state of use, and Figs. 3 and 4 show other embodiments of the invention. FIG. 1...Sludge feeding pipe, 2...Sludge removal pipe, 3...Lubricant supply pipe, 4...Drainage pipe, 5...Buried pipe, 6,7...
Flange body, 8...Short pipe, 10...Sled material, 11
...O-ring, 14, 15...Mounting hole.

Claims (1)

[Scope of utility model registration request] The front and rear end portions of various pipe bodies 1 to 4 such as mud feeding pipes and mud removal pipes having the same length as the buried pipe are supported between the front and rear flange bodies 6 and 7 that can be inserted into buried pipes such as hume pipes, and A piping unit in which flange bodies 6, 7 are provided with attachment parts 14, 15 using bolts, nuts, etc., and the various piping bodies 1 to 4 are connected in a watertight manner when the piping units are connected in series. In addition, the front and rear flange bodies 6, 7
A piping unit in a propulsion construction method, characterized in that a sliding member such as a sled member or several wheels having a curved surface identical to the inner peripheral curved surface of the buried pipe is provided at at least one lower end of the pipe.