JP2950404B2 - Anti-rolling device for shield machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing rolling of a shield excavator in which a ductile cast iron pipe, a steel pipe, or the like is buried by a shield excavator.

[0002]

2. Description of the Related Art In the construction of a propulsion method using a shield excavator, since a fume pipe made of a concrete pipe is generally used in many cases, the size of the shield excavator is adjusted to the size of the fume pipe. Has been produced. For this reason, when performing ductile cast iron pipe or steel pipe, etc., the shield excavator and the propulsion pipe are different in size and cannot be directly fitted, so the shield excavator and the propulsion pipe are placed behind the shield excavator. A method of equipping an adapter tube for communication is used.

[0003] Although the above-described method enables the propulsion construction of a ductile cast iron pipe or a steel pipe, in the propulsion construction using a shield excavator, the shield excavator itself rotates when the ground is cut by the shield excavator tip face plate. A problem of rolling occurs, and many problems such as an obstacle to the direction correcting jack and a malfunction of measuring instruments occur.

For this reason, in order to prevent rolling of the shield machine, a plurality of pins are fixed to the front end face of the adapter pipe facing the rear end face of the shield machine and provided on the rear end face of the shield machine. Generally, a method of preventing rolling of a shield machine by inserting it into a pin hole is used.

[0005]

The rolling prevention device described above makes it possible to prevent rolling of the shield machine, but when the shield machine is connected to the adapter tube, the pin position is shifted to the pin hole position. Although it is difficult to confirm that the pins match, it takes a lot of time for the connection work, and the pins are often deformed or damaged during insertion. In addition, the pin is held by the pin shearing force as the force for holding the rolling.However, when the ground at the propulsion point is strong, a large rolling force is generated, and the pin shearing force becomes insufficient and the pin deformation or deformation occurs. At present, cutting often occurs.

[0006]

That is, according to the structure of the present invention, a plate divided into a plurality of plates on the rear end face of the shield machine and the front end face of the adapter pipe facing each other are alternately connected to the rear end face of the shield machine and the adapter pipe. Anti-rolling device fixed at the front end face on the side.

As the plate fixed to each end face, a steel material which is easily fixed to each end face by welding is used. Regarding the size of the plate to be divided, the plate is divided so as not to become too heavy according to the diameter of the propulsion pipe in consideration of the mounting workability.

[0008]

The plate fixed to the front end face of the adapter pipe is fitted between the plates fixed at a predetermined distance to the rear end face of the shield machine. When cutting the ground by rotating the shield excavator tip face plate, if the ground strength is large or the resistance around the shield excavator is small, the shield excavator itself will try to rotate, but the plate on the rear end face of the shield excavator is an adapter The rotation of the shield machine is prevented by the plate on the tube side preventing rotation. At this time, the adapter pipe is integrated with the following propulsion pipe by bolts or the like, so that it does not rotate with the shield machine.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view illustrating a rolling prevention device for a shield machine according to the present invention. Shield machine 2
A plurality of plates 1 are welded to the rear end face 4 at predetermined intervals in the circumferential direction. The shield machine 2
Since it is manufactured according to the size of the concrete fume pipe, it cannot be joined with the propulsion pipe 6 such as a ductile cast iron pipe or a steel pipe. Equipped with a possible adapter tube 3 to enable joining. The plate 1 is welded to the front end face 5 of the adapter pipe 3 at a position where the plate 1 provided in the shield machine 2 does not exist. Adapter tube 3
A propulsion pipe 6 is fitted behind and is fastened to the adapter pipe 3 by bolts or the like.

As the plate 4, a steel material which is relatively strong and can be firmly mounted on a shield machine is generally used. It is also possible to use a lightweight and high-strength resin material developed in recent years.

FIG. 2 is a front view of the shield excavator illustrating the anti-rolling device of the present invention. Plates 1 are welded to the rear end face 4 of the shield machine 2 at predetermined circumferential intervals at two locations in the circumferential direction.

FIG. 3 is a front view of the adapter tube illustrating the anti-rolling device of the present invention. Adapter tube 3
The plate 1 is welded to the front end face 5 at two places between the two plates 1 welded to the rear end face 4 of the shield machine 2.

In this embodiment, the number of plates 1 to be installed on the shield machine 2 and the adapter pipe 3 is two, but the number of pieces to be divided can be changed in consideration of the pipe diameter and the mounting workability. it can. Increase the diameter of the propulsion pipe 6
In general, increase the number of plates 1 by increasing the number of divisions
This can facilitate the mounting operation. Next, the usage of the device of the present invention will be described with reference to FIGS. Due to the rotation of the face plate at the tip of the shield machine 2, the ground is cut and taken into the shield machine 2. When the strength of the ground is relatively large during propulsion or when the outer peripheral resistance of the shield machine 2 is small, the shield machine 2 itself tries to rotate by receiving the rotational force. The provided plate 1 is a shield machine 2
Abuts against the plate 1 provided on the front end face 5 of the adapter pipe 3 joined to the rear of the shield excavator 1 to prevent the shield machine 1 from rotating. At this time, the adapter pipe 3 is tightened at a plurality of places by bolts with the following propulsion pipe 6, and has a large resistance to rotation.

Although the ductile cast iron pipe and the steel pipe are illustrated as the propulsion pipe 6, the anti-rolling device according to the present invention can be adopted even when the temporary pipe propulsion using the steel pipe or the like is first performed in the two-step method. It is.

[0015]

As described above, even if a large rolling force is applied to the shield machine, the apparatus for preventing rolling of the shield machine according to the present invention is reliably prevented by a large shearing force of the plate. The pin was no longer deformed or damaged, and the shield machine no longer rolled. For this reason, the direction correction at the time of propulsion is not hindered, and the surveying instruments and the like do not malfunction.

[0016]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view illustrating a rolling prevention device of a shield machine according to the present invention.

FIG. 2 is a front view of a shield excavator illustrating a rolling prevention device according to the present invention.

FIG. 3 is a front view of the adapter tube side for explaining the anti-rolling device of the present invention.

[Explanation of symbols]

 Reference Signs List 1 plate 2 shield excavator 3 adapter pipe 4 rear end face of shield excavator 5 front end face of adapter pipe 6 propulsion pipe

Claims (1)

(57) [Claims] A propulsion method equipped with an adapter pipe for communicating with a propulsion pipe to be buried behind a shield excavator. In a device for preventing rolling of a shield excavator at a tip end, an opposing shield excavator side is provided. A plurality of plates divided into a rear end face and a front end face on the adapter pipe side, which are alternately fixed on the rear end face on the shield excavator side and the front end face on the adapter pipe side. Prevention device.