JPH01198997A - Painting device for tunnel inner wall - Google Patents

Abstract

PURPOSE:To improve finish, to prevent exercising of an adverse influence on a worker by powder dust, and to improve workability, by a method wherein a trowel is moved between two timberings along the timbering through the working of a link mechanism, and painting is effected as concrete is pressed. CONSTITUTION:Stepped parts 11 and 11 joined with the surfaces of two adjoin ing timberings 1 and 1 are formed on both sides of a front, a taper surface 3 is formed on a front surface having an outlet hole 12, And a trowel C having brush layers 2 protruded from the front and the rear end in a moving direction is formed. The trowel C of a plate body is mounted on the tip side of a link mechanism B extended from a moving support body 7 capable of reciprocating along a gantry 5 of a support part A. The trowel C is moved along the timber ing 1 with the aid of hydraulic cylinders 9 and 10 and hydraulic motors 13 and 14 as concrete is fed to the front of the trowel C, and concrete is coated as the concrete is pressed between the adjoining timberings 11 and 11.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a tunnel inner wall coating device that can apply concrete, mortar, etc. to the tunnel inner wall surface between adjacent supports.

(Prior Art) Conventionally, in order to prevent the inner wall surface of tunnels formed by excavation or blasting from collapsing, cracking, and water leakage, concrete, mortar, etc. was sprayed to form a concrete or mortar layer.

(Problem to be solved by the invention) When sprayed with a spray machine like that.

The rapid release of water containing cement into the air from the nozzle of the spray machine creates fog, and the concrete dust that bounces off the concrete creates a negative atmosphere inside the tunnel, which has a particularly bad effect on the human body. ,Also,
In spray painting, there were problems such as spraying was also performed on the surface side of both supports that matched V4, and the sprayed layer was not uniform and unnecessary spraying was performed.

(Means for Solving the Problems) This invention solves such problems and makes it possible to reliably and satisfactorily paint the inner wall surfaces of tunnels between adjacent side skin sections.

A trowel that can receive concrete, etc. from the front side is connected to the tip side of the link mechanism that can extend and contract from the support part that can be installed in the tunnel.

Front both sides 6'r''n, Prefecture Te both sides 0 both supports 7°° near +fi
″.

The front surface of the trowel, which has a brush layer protruding from the front and rear ends in the moving direction, has a tapered surface that is high at the front and low at the rear.

(Function) Therefore, if the trowel is moved between the adjacent side panels while expanding and contracting the link mechanism on the supporting side, the concrete etc. supplied to the front of the trowel will be It can be applied well to the inner wall surface of the tunnel of the side skin retainer while being pressed moderately by the surface.

(Example) Next, an embodiment shown in one drawing will be described.

1 is a support made of H-shaped steel curved into an arc, and is installed parallel to the inner wall surface of a tunnel formed by excavation or blasting at regular intervals.

In Figures 2 and 3, A indicates a support part, and the support part A is one car, the lower end of which is supported by 4.4 with special side skins on both sides, and is installed so that it can move inside the tunnel. The gantry 5 is equipped with a movable support 7 on its outer periphery that can reciprocate along substantially its entire circumference by driving a motor 6, and a link mechanism B is connected from the movable support 7 to the gantry 5.
The link mechanism B has a hydraulic cylinder 9 on the base side that connects a large number of links 8 and expands and contracts in the front and back direction as shown by the arrow A in FIG. Hydraulic cylinders 10 that extend and contract in the vertical direction are interposed on the distal end sides.

A plate-shaped iron C is connected to the tip side of the link mechanism B, and the iron C has side retainers 1 on both sides of the front side thereof, which fit against each other.
1, a tapered surface 3 with a high front and a low rear is formed on the front surface having an outflow hole 12, and a brush layer 2 is protruded from the front and rear ends of the brush layer 2 in the moving direction. The iron C can be rotated in the lateral direction as shown by arrow 2 with respect to the longitudinal axis C with respect to the distal end side of the link mechanism B, as shown in FIG. Hydraulic motor 13 and hydraulic motor 1 that can be rotated in the front and rear directions as shown by arrows with respect to the horizontal axis H.
4 are interposed and connected, and the tip of a conveying hose 15 extending from a concrete pump P movable within the tunnel is connected to the rear of the outflow hole 12 of the trowel C.

Note that the hydraulic cylinders 9 and 10 and the hydraulic motor 13
．． 14 is equipped with a sensor that can detect the force with which the trowel C is pressed against the coating surface.

The system is configured so that the operator can operate the system appropriately while understanding the concrete application status through this detection.

Therefore, while moving the movable support 7 along the outer periphery of the gantry 5 of the support part A that can be moved and installed in the tunnel, the trowel C is applied while extending and contracting the link mechanism B in the front and back up and down directions. Adjust the position and protect the adjacent side skin.

Align both step parts If and 11 of trowel C with the surface of trowel C, and while supplying concrete to the front surface of trowel C,
When the iron C is moved, the iron C rotates back and forth and in the lateral direction in response to the unevenness of the inner wall surface of the tunnel, while using the tapered surface 3 on the front side.

Apply side skin protection 1, 1 to ensure a uniform layer and a good finished surface.
This means that the concrete can be applied to the inner wall surface between the two while pressing it just the right amount.

FIG. 8 shows another embodiment, and as indicated by the same reference numerals as in the previous embodiment, it has substantially the same structure except that the structure of the link mechanism B is changed.

In another embodiment shown in FIG. 9, one support part A is used as a traveling vehicle, and the structure is substantially the same as that of the previous embodiment as indicated by the same reference numerals, but the base side of the link mechanism B is hydraulically connected. They are arranged in series so that they can be rotated laterally by a motor 16.

In yet another embodiment shown in FIG. 10, the support part A is a traveling vehicle and is constructed in substantially the same manner as the embodiment shown in FIG. It is composed of

(Effects of the Invention) In this way, the present invention allows concrete, etc., to be fed to the front surface of the trowel, to be moved between the side sheaths along the side sheaths by being operated by the link mechanism. Apply it evenly to the inner wall surface of the tunnel between one car support while pressing it moderately against the tapered surface of the front side, to ensure a good finish, and without wasting any waste by avoiding applying it to the surface of the side skin protection. This means that it is possible to paint with good operability, reliably, and with good workability without affecting the operator.

It has the advantage of being suitable for implementation.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a iron which is an embodiment of the present invention;
The figure shows a side view of the entire main part, FIG. 3 shows a rear view of a part of FIG. 2, FIG. 4 shows a perspective view of FIG. 1, and FIGS. 7 is an explanatory view, and FIG. 8, FIG. 9, and FIG. 10 each show other embodiments. A...Support part, B...Link mechanism. C...trowel, l...support. 2...Brush layer, 3...Tapered surface. Patent Applicant Komatsu Ltd. Representative (Patent Attorney) Osamu Matsuzawa Figure 1 Figure 2 Figure 3-5 Figure 11;

Claims (1)

[Claims] A trowel capable of receiving concrete, etc., is installed on the front side of the link mechanism that can be extended and expanded from a support part that can be installed in the tunnel, and both front side ends are placed close to both supports on both parallel sides. The front surface of the trowel, which has a brush layer protruding from the front and rear ends in the moving direction, has a tapered surface with a high front and a low rear, and concrete, etc., can be applied to the inner wall surface of the tunnel between the two adjacent supports. A coating device for tunnel inner walls, characterized in that it is configured to be able to perform.