JPH03224993A - Lining device for tunnel or the like - Google Patents

Abstract

PURPOSE:To save consumption of material without allowing dust in spraying of concrete to disperse by a method wherein the concrete to be applied to lining for a tunnel is temporarily received with a receiving member, and the received concrete is then applied to the wall surface of the tunnel by movement of a trowel. CONSTITUTION:A pipe member 4 is held with a robot arm 2 so that an outlet 5 of the pipe member 4 is placed facing a wall surface 9 whereon lining is to be applied. When a trowel member 7 is in a waiting position, concrete is supplied from a supply pipe 8 to the inside of the pipe member 4, and the trowel member 7 is moved afterward to an applying position by operation of a cylinder 6, and the wall surface 9 is covered with the concrete discharged from the outlet 5 of the pipe member 4. Then lining is made with the concrete applied over the wall surface 9 by reciprocation of the trowel 7. The surface of the concrete layer 10 is finished with a finishing trowel 11. Thereby dispersion of dust is prevented and consumption of concrete material can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a lining device for lining the walls of excavated tunnels or the like with concrete.

Prior Art Currently, NATM is the standard tunnel lining method. This construction method sprays concrete directly onto the tunnel wall, so it has various advantages such as easy construction and short construction time.

However, the shotcrete construction method generates dust during spraying, and this dust may harm the health of workers. Additionally, this construction method had the problem that the shotcrete often bounced back, resulting in a large amount of wasted concrete material.

Problems to be Solved by the Invention An object of the present invention is to solve the above-mentioned conventional problems and provide a tunnel lining device that generates less dust and the like.

SUMMARY OF THE INVENTION In order to achieve the above object of the present invention, in a lining device for lining the wall surface of an excavated tunnel or the like with concrete, a receiving member provided with an outlet at one end side;
a core member provided within the receiving member so as to be reciprocally movable in directions toward and away from the outlet and for pushing concrete from the receiving member; The present invention is characterized in that it has an immediate action means that reciprocates between the outlet and the standby position, and a concrete supply means that supplies concrete into the receiving member between the outlet and the standby position.

Action The concrete for lining is once received by the receiving member,
The concrete is applied to the tunnel wall by moving the core member. Therefore, since concrete is only supplied to the receiving member and no concrete spraying is performed, hardly any spray dust is generated and waste of concrete material is reduced.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, the reference numeral 1 is a robot arm device 3, and the robot arm device 1 of this example is the "-arm 2".
and a second arm 3. A tube member 4 having a U-shaped cross section as a receiving member is attached to the tip of the second arm 3, and the tube member 4 is supported by the robot arm device 1 so as to be movable to a desired position.

The tube member 4 has an outlet 5 formed at one end, and a cylinder 6 as a drive device is attached to the other end. A rod 6a of the cylinder 6 extends in the direction of the outlet 5, and a core member 7 is fixed to the tip thereof. This core member 7 is formed to have substantially the same shape as the inner cross-section of the tube member 4, and is reciprocated between a standby position shown by a solid line in FIG. 2 and a coating position shown by a chain line by the operation of the cylinder 6. Ru. In this example, the core member 7 at the application position is substantially aligned with the surface of the outlet 5 of the tube member 4, but the core member 7 at this position may be placed slightly before or after the surface of the outlet 5.

A supply pipe 8 for supplying concrete is attached to the pipe member 4, and in this case, the connection position of the supply pipe 8 is set so that the concrete supply position is between the standby position and the application position of the core member 7. ing.

Concrete is conveyed to this supply pipe 8 from a concrete supply means (not shown) such as a concrete pump or a concrete sprayer. Note that concrete may be directly supplied to the pipe member 5 by a belt conveyor without using a supply pipe.

Further, a hardening agent such as an accelerating agent may be added to the concrete material if necessary.

The operation of the lining device thus constructed is as follows.

In Figure 1, numeral 9 is the wall of the excavated tunnel;
10 shows the already lined concrete layer. Here, when continuing lining, the outlet 5 of the pipe member 4
The pipe member 4 is held by the robot arm device 1 so as to face the wall surface 9 to be lined. When the core member 7 is in the standby position, concrete is supplied from the supply pipe 8 to the pipe member 4.
When the core member 7 is moved from the standby position to the application position by the operation of the cylinder 6, the concrete is discharged from the outlet 5 of the pipe member 4 and applied to the wall surface 9. Then, when the core member 7 returns to the standby position again,
Concrete is newly supplied into the pipe member 4 from the supply pipe 8. Incidentally, the supply of concrete can be easily controlled by synchronizing the operation of the cylinder 6.

In this way, the core member 7 can be reciprocated and the concrete can be lined by coating it on the wall surface 9, so that no dust is generated and even if there is loss of concrete material, it is extremely small.

After coating with the core member 7, the surface of the concrete layer 10 is finished with a core or a tamping machine or the like. During this finishing process, as shown in FIG.
1 may be provided. In this case, the finishing core 11 is actuated by a second cylinder 12 constructed similarly to the core member 7 .

The lining device thus constructed can automatically prepare the surface of the concrete coated with the core member 7 by moving the pipe member 4 and using the finishing core 11 one after another.

FIG. 4 shows another embodiment of the present invention, in which the tube member 4 is formed into a cylindrical shape. Therefore, the pipe member 4 is
This is advantageous because concrete material does not spill even when tilted along the channel wall surface.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified in various ways. For example, a wide pipe member may be used;
In this case, two or more cylinders may be used to reciprocate the core member. Furthermore, there may be a plurality of supply pipes.

Furthermore, the tube member is not limited to the robot arm device, but may be provided in any appropriate device that can be moved to any position and held at that position.

Effects According to the above configuration, since the concrete is lined by the movement of the core member, dust is eliminated and waste of concrete material can also be prevented.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
FIG. 3 is an explanatory view showing a modified embodiment of the present invention, and FIG. 4 is a perspective view showing still another embodiment of the present invention. 4... Pipe member 5... Outlet 6... Cylinder 7... Core member 8... Supply pipe

Claims (1)

[Claims] A lining device for lining the wall surface of an excavated tunnel or the like with concrete includes a receiving member provided with an outlet at one end, and a receiving member reciprocatingly movable in the direction toward and away from the outlet within the receiving member. a core member for pushing out from the receiving member; a driving means for reciprocating the core member between a coating position at or near the outlet and a standby position remote from the outlet; and a receiving member between the outlet and the standby position. A lining device for a tunnel or the like, comprising a concrete supply means for supplying concrete into a member.