JPS594031B2 - Method and device for advancing the cylinder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for advancing a cylinder underground, and a reaction force receiver for advancing the cylinder to the front of the starting base on both sides of the cylinder to be advanced. The object of the present invention is to provide a technically excellent and economically advantageous method and device for safely, reliably, and efficiently advancing a cylindrical body by providing equipment to support the reaction force.

Conventional methods for digging a cylinder into the ground include the propulsion method, towing method, and traction propulsion method.In the case of the propulsion method, reaction force receiving equipment is installed on the vertical part of the earth retaining wall at the back of the launch base, and the tube is In order to move forward by interposing a strut between the body and the propulsion jack, the distance between the cylinder body and the propulsion jack gradually increases.
The number of struts increases, which is not only uneconomical but also dangerous as it causes jumps and bending.The traction method requires horizontal poles and long side members, which is uneconomical, and the reaction force for advancing the cylinder is The receiving equipment must be installed on the front wall of the reaching tunnel, and the towing propulsion method has the drawback of requiring a long launching base for three parts, and also has the drawback of insufficient reaction force receiving force during the initial advance of penetration.

The present invention solves the above-mentioned drawbacks by installing new reaction force receiving equipment at the front of the starting base on both sides of the cylinder to be advanced, and also saves construction costs. Reaction force receiving equipment is installed at the front of the starting base on both sides of the cylinder, and locking members are provided protruding from both sides of the rear of the cylinder, and the protruding parts of the reaction force receiving equipment and the locking members are inserted. The cylindrical body is moved forward by inserting the tow allowance jack advance equipment by supporting the reaction force generated when the jack is operated by the reaction force receiving equipment in front of the starting base via the towing side member arranged as a tow side member. It is something to do.

Hereinafter, embodiments will be described in detail with reference to the drawings.

The one shown in FIGS. 1 and 2 is one embodiment of the invention, in which the front part of the starting base 3 of the cylinder body 1 having the cutting edge 2 at the front part and the cylinder body 1
Build reaction force receiving equipment 4 on both sides of the

Locking members 51 are provided at the rear of the cylinder 1 so as to protrude outward from the side walls of the cylinder 1, and the reaction force receiving equipment 4 and the protrusions of the locking member 5□ are inserted to connect the support side member 6. Arrange.

A removable fixture 7 for locking the reaction force receiving equipment 4 and the support side member 6 is disposed at one end of the support side member 6, and a locking member 5□ is provided at the other end of the support side member 6. The advancement equipment for the cylindrical body 1 is completed by disposing a slant type advancement jack equipment 8 having a removable fixing device 7 that locks the support side member 6.

The cylinder body 1 is moved forward by fixing the fixing devices 7 at both ends of the support side member 6 to the support side member 6, operating the slanting forward jacking equipment 8, and using the reaction force receiving equipment 4 to absorb the reaction force generated when the jack is operated. The cylindrical body 1 is supported via the support side member 6 and the locking member 5□.
This is what advances the underground.

Further, FIGS. 3 and 4 show another embodiment, and in the advancing device in the embodiment, regarding the locking member, in the case of this embodiment, the cylindrical body 1 A separate short locking member 52 is rigidly fixed to the rear end of the cylinder body 1 by the fixing device 9 and the fixing member 10 embedded in the rear wall of the tube and the fixing device 9 which can be tightened from the outside. A portion of the locking member 52 is provided to protrude outward on both sides of the cylinder 1, and other than this, the device and the method of advancing the cylinder are the same as in the previous embodiment.

In this embodiment, when a plurality of large width cylinders are advanced into the ground one after another, the short locking member that is locked by the fixing member embedded in the cylinder is moved to the rear cylinder. It has the advantage that the bodies can be laid forward one after another.

As is clear from the above explanation, the present invention supports the reaction force generated when the jack is operated by the reaction force receiving equipment provided in the front part of the starting base, and supports the tilting type forward jack through the support side member and the locking member. Since the cylinder is moved forward by operating the equipment, unlike the propulsion method, there is no need to install reaction force receiving equipment on the earth retaining wall at the back of the vertical shaft, and there is no need for a strut between the cylinder and the propulsion jack. Unlike the towing method, there is no need for a long horizontal bow league and tow side members, and there is no need for reaction force receiving equipment on the reaching side.
There is no need for a long launch base for the parts, and it can be constructed under embankments where a reaction force receiver cannot be installed behind the cylinder.In addition, when three or more parts are to be advanced underground, this construction method allows construction of two parts. It has the advantage that after excavating one piece at a time into the ground, a new device for the traction propulsion method can be installed from the mouth of the three-part body to advance three or more pieces underground. It has many advantages, such as being able to completely eliminate the lack of initial reaction force required to advance the first two parts into the ground, and is economically superior.

Although the method and apparatus of the present invention have been described above with reference to embodiments, the present invention is of course not limited to these embodiments, and various modifications of the design may be made without departing from the gist of the present invention. It's something you get.

[Brief explanation of drawings]

1 and 2 are a side view and a plan view showing one embodiment of the present invention, and FIGS. 3 and 4 are a side view and a plan view showing another embodiment. 1...Cylinder body, 2...Blade mouth, 3...
・・Starting base, 4・・・・Reaction force equipment, 51, 5□・
...Locking member, 6...Hand side member, 7.
. . . Fixing device, 8 .

Claims (1)

[Claims] 1. Regarding the method of advancing the cylinder, the reaction force receiving equipment for advancing the cylinder is placed at the front of the starting base on both outsides of the cylinder so as not to hinder the movement of the cylinder. At the same time, a locking member is cut into each side wall of the cylinder by protruding outward from the side surface of the cylinder at the rear part of the cylinder, and the reaction force receiving equipment and the locking member are inserted. A towing side member is provided, a removable fixing device is attached to one end of the towing side member, and a towing allowance advancement jack equipment having a detachable fixing device is attached to the other end, and the advancement device of the cylinder is installed. The cylindrical body is moved forward by fixing the fixing devices at both ends of the towing side member, and by supporting the reaction force generated at the time of jack operation by the reaction force receiving equipment at one end of the towing side member, and operating the towing allowance advancement jacking equipment. A method for advancing a cylinder, the method comprising: moving the cylinder forward via a trailing member that is fixed to a locking member of the cylinder. 2. Reaction force receiving equipment built at the front of the starting base on both outside sides of the cylinder and protruding outward from the sides of the cylinder at the rear of the cylinder so as not to impede the forward movement of the cylinder. ,
For each side wall of the cylindrical body, a locking member rigidly provided on each side wall, a support side member inserted through the reaction force receiving equipment and the protrusion of the locking member, a reaction force receiving equipment, and a locking member. It is constructed by combining a towing allowance advancement jacking device having a removable fixing device disposed at one end of the towing side member so as to lock the towing side member and a detachable fixing device disposed at the other end. A cylindrical advancement device characterized by: 3. The cylindrical advancement device according to claim 2, wherein the locking member is formed by extending a portion of the cylindrical body outward from both measuring portions at the rear end of the cylindrical body. 4. The cylindrical body advancement device according to claim 2, wherein the locking member comprises a fixing member embedded in the rear end wall of the cylindrical body and a short locking member locked by a fixture.