JP2942201B2 - Jig used for propulsion method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig capable of arranging hoses arranged inside a propulsion pipe to perform proper propulsion.

[0002]

2. Description of the Related Art When laying pipes such as sewer pipes, gas pipes or electric wire pipes underground, a propulsion pipe such as a fume pipe or a steel pipe is made to follow an excavator in a predetermined direction from a starting shaft. For example, in many cases, a so-called propulsion method for propelling an incoming shaft is used. In this propulsion method, the excavator arranged at the top is provided with a cutter head for excavating the ground, and the cutter head is rotated to excavate the ground,
Furthermore, the excavated earth and sand is taken into the excavator and discharged to the ground.

For this reason, the excavator includes a mud pipe for discharging electric and signal cables and excavated earth and sand. If the excavator employs a muddy water method, cables and pipes such as a mud pipe are used. It is connected. In particular, the propulsion method requires a large amount of thrust if the frictional resistance between the ground and the outer peripheral surface of the propulsion pipe is large. Is performed, and a hose for injecting lubricant is connected to the propulsion pipe at a predetermined pitch.

[0004] All the cables, pipes and hoses pass through the inside of the propulsion pipe, and are disposed on a distributor installed on the starting shaft side.
The control panel, pump, etc. are connected to the excavator or the propulsion pipe. That is, every time one propulsion pipe is propelled, all the cables, pipes, and hoses are disconnected once at a predetermined position, and the inside of a new propulsion pipe connected to the propulsion pipe that has already been propelled. After passing, it is connected again.

[0005]

As described above, in the propulsion method, a large number of cables, pipes, and hoses are arranged inside the propulsion pipe. These cables, etc., are left inside the propulsion pipe without being all tidy, and the cables, pipes, or hoses are intermittent due to clutter, especially when connecting a new propulsion pipe. There is a problem that work is not easy.

An object of the present invention is to provide a jig for supporting hoses used in a propulsion method in order to arrange hoses arranged inside a propulsion pipe and to carry out orderly propulsion.

[0007]

Means for Solving the Problems In order to solve the above problems, a jig used in the propulsion method according to the present invention is a jig for supporting hoses used in carrying out the propulsion method, and includes a propulsion pipe. An arc-shaped main body having a diameter substantially equal to the inner diameter of the main body and having at least half of the circumference, and a supporting member fixed to the inner peripheral surface of the main body and supporting a predetermined hose. Things.

In the jig used in the above-mentioned propulsion method (hereinafter simply referred to as "jig"), the main body is formed in an arc shape having a diameter substantially equal to the inner diameter of the propulsion pipe and having at least half of the circumference. When the main body is disposed inside the propulsion pipe at a predetermined pitch, the main body can be pressed against the inner peripheral surface of the propulsion pipe to maintain a stable posture. Therefore, cables, tubes, and hoses, which become hoses, can be supported by the support member fixed to the inner peripheral surface of the main body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the above jig will be described below with reference to the drawings. FIG. 1 is an explanatory view when the propulsion method is performed, FIG. 2 is a front view illustrating the configuration of a jig,
FIG. 3 is a view taken in the direction of arrows III-III in FIG.

First, prior to describing the structure of the jig,
FIG. 1 schematically illustrates the propulsion method. In the propulsion method, the excavator 1 and the propulsion pipe 2 are propelled in a target direction by transmitting the thrust generated from the main pushing device 3 through the propulsion pipe 2 that follows the excavator 1 that excavates the ground. The jig A is arranged at a preset pitch on the propulsion pipe 2 following the excavator 1, and the jigs A support the hoses B so that the inside of the propulsion pipe 2 is tidy. The structure is such that the work proceeds smoothly.

The excavator 1 is composed of a shield body 1a and a tail shield 1b, and both are connected by a jack 1c so that when the propulsion direction deviates from a predetermined line, the deviation can be corrected. Further, a cutter head 1d is mounted on the tip of the shield body 1a, and a motor 1 for driving the cutter head 1d is provided inside the shield body 1a.
f is attached.

As the propulsion pipe 2, a pipe such as a fume pipe, a steel pipe, or a synthetic resin pipe is used. These pipes can be appropriately selected according to the properties of a fluid flowing through a target pipe and other conditions. Used for

The main pushing device 3 has a mounting table 3a on which the excavator 1 and the propulsion pipe 2 are mounted to guide the propulsion direction. The mounting table 3a has a rear end of the excavator 1 or the propulsion pipe 2. The push wheel 3c which contacts the rear end and moves by the thrust generated by the jack 3b to propel the excavator 1 and the propulsion pipe 2 is arranged.

The excavator 1 is supplied with electric power for driving the motor 1f or a cable 4 for supplying electric power for driving a hydraulic unit (not shown), a control unit for controlling the driving of the motor 1f, and controlling the driving of the jack 1c. A control unit for detecting displacement of the excavator 1 from a predetermined line in the propulsion direction, a control unit for a TV camera for photographing the inside of the excavator 1, and a control panel installed on the ground. A signal cable 5, a mud pipe for discharging earth and sand excavated by the cutter head 1d, and a pipe 6 such as a mud pipe for supplying muddy water to the cutter head 1d are connected. The excavator 1 and the selected propulsion pipe 2 are each connected via a valve 8 to a hose 7 such as a lubricant injection hose for injecting a lubricant into a gap formed between the excavator 1 and the ground.

The cables 4, the signal cables 5, the tubes 6 and the hoses 7 constitute hoses B. These hoses B are provided inside the propulsion pipe 2 at a predetermined pitch (for example, one propulsion pipe 2). (Such as one for each) and are neatly arranged along the inner peripheral wall of the propulsion tube 2.

A procedure for implementing the propulsion method according to the present invention by the above-described propulsion device will be described. First, the excavator 1 is mounted on the mounting table 3a of the main pushing device 3 installed in the starting shaft, and the cable 4 is connected to the motor 1f of the excavator 1 and the signal cable 5 is connected to a control unit (not shown). Further, hoses B composed of a pipe 6 and a hose 7 are connected.
At this time, the hoses B are arranged at the bottom of the excavator 1.
Then, the jack 3b is driven to advance the push wheel 3c,
The excavator 1 is propelled with this advance.

When the propulsion of the excavator 1 is completed, the push wheel 3c
Is retracted so that the hoses B are cut off near the rear end of the excavator 1, and the hoses B are previously placed on a jig A and placed on the mounting table 3a.
Through the inside of the propulsion pipe 2 placed in the tub. At this time, the hoses B are supported by the jig A arranged on the propulsion pipe 2. Next, the hoses B inside the excavator 1 and the hoses B arranged in the propulsion pipe 2 are connected.
c is advanced, and the propulsion pipe 2 is propelled.

After the propulsion of the propulsion pipe 2 is completed, the above operation is repeated and a new propulsion pipe 2 is successively propelled to protrude, so that a desired pipeline can be laid. Then, after laying the pipeline by the propulsion pipe 2, the hoses B and the jig A disposed inside the propulsion pipe 2 are collected.

Next, a preferred example of the jig A will be described with reference to FIGS.
This will be described with reference to FIG. The jig A has a diameter substantially equal to the inner diameter of the propulsion pipe and has a main body 11 formed in an arc shape.
The supporting members 12a to 12d for supporting the cables 4, the signal cables 5, the tubes 6, and the hoses 7 serving as hoses are fixed to the inner peripheral surface of the main body 11.

The main body 11 is formed from a flat bar having a predetermined width dimension and having a diameter substantially equal to the inner diameter of the propulsion pipe and an arc slightly larger than a semicircle. The jig A is not specially fixed when placed inside the propulsion tube. For this reason, by forming the main body 11 into an arc shape having a diameter slightly larger than the inner diameter of the propulsion pipe, when placed inside the propulsion pipe, the restoring force of the main body 11 causes the inner peripheral surface of the propulsion pipe to be formed. It is preferable to be configured so that it can be fixed by pressing.

The support members 12a to 12d are formed in hook shapes having dimensions corresponding to the thickness and shape of the hoses to be supported, and are fixed to predetermined positions on the inner peripheral surface of the main body 11 by welding. I have. The conditions such as the number and shape of the support members 12a to 12d are not particularly limited, and are preferably set in a well-balanced manner in accordance with the conditions such as the number, thickness, and weight of the cables and tubes constituting the hoses. .

In the jig A configured as described above, the main body 11
When inserted into the propulsion pipe in a state where the diameter of the propulsion pipe is reduced, and placed at a predetermined position, the restoring force of the main body 11 presses against the inner peripheral surface of the propulsion pipe to maintain the position. Accordingly, the jig A can support the various cables 4, 5, the pipe 6, and the hose 7.

[0023]

As described above in detail, the jig according to the present invention can be provided inside the propulsion pipe to support hoses necessary for performing the propulsion operation. Especially,
Since the hoses can be arranged and supported along the inner peripheral surface of the propulsion pipe, the hose has features such as being able to arrange and arrange the inside of the propulsion pipe.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram when a propulsion method is performed.

FIG. 2 is a front view illustrating a configuration of a jig.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;

[Explanation of symbols]

 A jig B hoses 1 excavator 2 propulsion pipe 3 main pushing device 4 cable 5 signal cable 6 pipe 7 hose 8 valve 11 main body 12a to 12d support member

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomoyuki Matsubara 4-32-22 Nishi-Shinjuku, Shinjuku-ku, Tokyo Odakyu Construction Co., Ltd. (72) Inventor Kiyoshi Yokoyama 4-31-6, Yoyogi, Shibuya-ku, Tokyo Co., Ltd. (56) References JP2-14705 (JP, Y2) JPN 55-48855 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E21D 9 / 06 311 E21F 17/02

Claims (1)

(57) [Claims] 1. A jig for supporting hoses used in carrying out a propulsion method, comprising: an arc-shaped main body having a diameter substantially equal to the inner diameter of a propulsion pipe and having at least half of a circumference. A jig for use in a propulsion method, comprising: a support member fixed to an inner peripheral surface of the main body and supporting predetermined hoses.