JPH03129097A - Formation of cover - Google Patents

Abstract

PURPOSE:To prevent the generation of dust during a covering work and secure a superior working environment by carrying out covering by slinging a covering member, which is formed into lump form by mixing a viscous material, to the surface of a covered article by a slinging means. CONSTITUTION:A sling means 1 is constituted of a machine body 7, supporting member 7a, and a rotary arch 2, and placed on a shiftable vehicle 11, which means 1 can be turned in the CD direction on a center shaft CL. A covering material holding device 3 having a saucer shaped placing surface is installed at the top edge of the rotary arch 2, and driving means 5 such as springs and motors are installed inside. Then, a covering material 6 is mixed with viscous material and formed into lump form, which is slung and attached to the surface 9a of a covered objective article 9 such as bank by the sling means 1, and a cover is formed. Accordingly, the generation of dust during the conventional covering work is prevented, and a superior working environment can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for forming a coating on a structure for coating a tunnel earth or the like with a coating material.

(b), Conventional Technology Conventionally, when constructing a lining by covering a tunnel ground with a covering material such as concrete or mortar, the covering material was sprayed onto the surface of the ground using a spraying machine. Is going.

(C)0 Problems that the invention aims to solveHowever, this creates an extremely poor working environment due to the generation of dust.
Workers' health is at risk. In addition, since it is not possible to increase the spraying distance between the surface of the ground and the outlet of the spraying machine, it is not possible to work over a wide area at once, and the work must be done while frequently moving the spraying machine. The work is complicated and takes a lot of time.

In addition, in order to prevent the coating material that has adhered to the surface of the ground from running off, it is necessary to add an quick-setting agent to the coating material to hasten the hardening of the coating material, and it takes a lot of time and effort to prepare and add the quick-setting agent. This is a costly inconvenience.

In order to solve the above-mentioned problems, the present invention has developed a coating forming method that does not generate a powder layer during spraying, can cover a wide range, and can significantly reduce the amount of quick-setting agent added. The purpose is to provide

(d) Means for solving the zero problem, that is, the present invention provides a throwing means (1) and a covering material (
6) is mixed with a viscous agent to form the covering material (6) into a lump, and the lump-like covering material (6) is thrown onto the means (1).
and the throwing means (1) throws the covering material (6) in the form of a lump onto the surface (9a) of the object (9) to form a covering.

Note that the numbers in parentheses are for convenience to indicate corresponding elements in the drawings, and therefore, this description is not limited to the descriptions on the drawings. r(e) below,
The same applies to the column "Effect".

(e) 1 Effect With the above-described configuration, the lump-like covering material (6) can be applied to the object (
9) collided with the surface (9a) and was destroyed.

It acts to cover the surface (9a) of the object (9).

(f) 9 examples The present invention will be described in detail below based on one drawing.

FIG. 1 is a diagram showing an embodiment of the coating forming method according to the present invention.

The slinger 1 shown in the construction drawing has a body 7, and the body 7 is mounted on a moving vehicle 11 in a manner that is rotatable in directions of arrows C and D about a central axis CL via a support member 7a. It is placed there. The rotary arm 2 is attached to the fuselage 7 in the direction of arrows A and B.
A coating material holder 3 is provided at the tip of the rotary arm 2, and the coating material holder 3 has a bowl-shaped loading surface. 3a is formed. Furthermore, drive means 5 such as a spring and a motor are provided inside the body 7.

The driving means 5 is connected to the rotary arm 2, and can rotate the rotary arm 2 in the directions of arrows A and B between the injection position SS and the replenishment position R5. Further, the driving means 5 moves the rotary arm 2 from the replenishment position RS to the injection position SS.
When rotating in the direction indicated by the arrow, it can be rotated vigorously. In addition, the injection position SS of the rotating arm 2
and replenishment position R3 can be changed and adjusted as desired.

When forming the coating 10 on the surface 9a of the tunnel ground 9 using the sling crab to form a lining, first,
Concrete mortar (What is ``concrete mortar'' in the present book?

A viscosity agent is added to the coating material 6 (which means "concrete" or "mortar") to increase the viscosity of the coating material 6. At this time, an accelerating agent is added to the coating material 6 as necessary to accelerate curing, but the amount of the accelerating agent added may be smaller than in the case of the spraying method using a normal spraying machine, or O. . Then, the coating material 6 having a high viscosity is formed into a spherical shape having a size that can be placed on the loading surface 3a of the coating material holder 3 of the slinger 1.

Next, as shown in FIG. 1, the slinger 1 is covered with a coating 10.
The moving vehicle 11 is positioned so that it faces the ground 9 with a predetermined throwing distance IIL between it and the surface 9a of the ground 9 to be formed, that is, in such a way that the front 1a faces the ground 9. .

Then, the rotating arm 2 of the sling crab is rotated in the direction of the arrow B, and the loading surface 3a of the dressing material holder 3 is directed upward in the figure, as shown by the two-dot chain line in FIG.
Position to 3. Then, a spherical covering material 6 is supplied onto the loading surface 3a of the covering material holder 3 from a supply means (not shown).

When the spherical covering material 6 is placed on the loading surface 3a, the driving means 5 rotates the arm 2 once in the direction of the arrow A to the injection position SS. Then, the covering material 6 is thrown out from the loading surface 3a in the direction of arrow S on the side of the earth 9 and collides with the surface 9a of the earth 9.

The spherical covering material 6 is destroyed by the collision with the surface 9a of the ground 9, becomes an uncured coating [6', and adheres to the surface 9a in a form connected to the already formed coating [10]. . As already mentioned, the coating material 6 contains a viscous agent, so it has strong self-retention properties.

During the flight from the slinger 1 to the ground surface 9a and the ground surface 9
Even when it collides with the surface 9a, it does not turn into particles and adheres to the surface 9a in one piece. Therefore, when the coating material 6 collides with the surface 9a during flight, the aggregate etc. will not bounce back, and dust will not be generated as in the conventional spraying method, thereby preventing deterioration of the working environment. I can do it. Furthermore, due to the high viscosity of the coating material 6, that is, the uncured coating 6', the uncured coating 6' adhered to one surface 9a does not flow down in the figure along the surface 9a, so that curing is accelerated. Due to the need to prevent run-off, the amount of the quick setting agent added can be reduced. Further, it is also possible to adjust the amount of the viscosity agent added to the coating material 6 so that no quick setting agent is added at all.

When the coating 6' is formed by throwing the spherical coating material 6 onto the ground 9 and depositing it on the surface 9a, next, the coating 6'
In order to throw a new covering material 6 upward in the figure, that is, in the force direction of arrow S', the injection position SS of the rotary arm 2, etc. are changed and set. On this occasion.

There is no need to move the slinger l. Then, in the same manner as described above, the rotary arm 2 is positioned to the replenishment position R8, and the loading surface 3 of the dressing material holder 3 is
A new spherical covering material 6 is supplied onto a. Then, the rotary arm 2 is vigorously rotated in the direction of the arrow A to the set injection position SS by the driving means 5, and the newly supplied coating material 6 is injected in the direction of the arrow S' force, and the ground 9 It is thrown onto the surface 9a of the ground 9 by throwing it over the previously applied coating 6'.

In this way, the coating 10 is formed on the surface 9a of the ground 9 in the vertical direction in the figure. In addition, by appropriately rotating the slinger in the directions of arrows C and D, the direction is changed perpendicular to the plane of the drawing 1 paper, and the slinger 1 is aligned with the plane of the drawing paper on the surface 9a of the ground 9 without moving the slinger 1. The coating 10 is also formed in the vertical direction.

That is, the spherical covering material 6 is continuously supplied to the slinger 1, the direction of the slinger 1 with respect to the ground 9 is adjusted as appropriate while the moving vehicle 11 and the slinger 1 are fixed in one place, and the rotating arm is 2 injection position SS etc. with slinger 1
The spherical covering material 6 is thrown from the slinger 1 to a predetermined position on the surface 9a of the earth 9 by adjusting it in a manner corresponding to its orientation with respect to the earth 9.

A coating 10 is formed on the surface 9a of the ground 9.

Note that if the covering material 6 cannot be thrown over the entire surface 9a of the ground 9 by changing the direction of the slinger 1 with respect to the ground 9, the moving vehicle 11 and the slinger 1
The work is carried out while moving the coating material 6. At this time, the rotational movement speed of the rotary arm 2 in the direction of arrow A by the driving means 5 is increased to the extent that the coating material 6 does not split during flight. By increasing the flight distance, it is possible to increase the throwing distance between the slinger 1 and the earth 9. Then, adjust the direction of Slinger l with respect to the ground 9,
Furthermore, by adjusting the injection position SS of the rotary arm 2, etc., the covering material 6 can be thrown over a wide range of surfaces 9a of the ground 9 without frequently moving the slinger 1 (mobile vehicle 11). The coating 10 can be formed and the work can be done easily and quickly.

In the above-mentioned embodiment, a case was described in which the slinger 1 having the dressing material holder 3 and the rotating arm 2 for rotationally driving the dressing material holder 3 was used as the throwing means, but the throwing means was spherical. Any structure may be used as long as the covering material 6 formed on the ground can be thrown onto a predetermined position on the surface 9a of the earth 9.

(g) 0 Effects of the Invention As explained above, the present invention provides a throwing means such as a slinger 1, mixes a viscous agent into the coating material 6, forms the coating material 6 into a lump, and forms the coating material into a lump. The covering material 6 is supplied to the throwing means, and the covering material 6 in the form of a lump is thrown onto the surface 9a of an object such as a ground 9 to form a covering for a tunnel lining or the like. Therefore, the lumpy covering material 6 collides with and adheres to the surface 9a of the object, thereby covering the surface 9a of the object. Therefore, since no dust is generated during the work, deterioration of the work environment is prevented and the health of the workers is not harmed. Furthermore, since the throwing distance between the surface 9a of the object and the throwing means can be increased within a range where the covering material 6 does not split while flying between the throwing means and the surface of the object, the throwing means can be The covering material 6 can be thrown over a wide range on the surface 9a of the object while being fixed in one place.

Therefore, there is no need to frequently move the throwing means,
Work can be done easily and quickly. In addition, since the viscosity of the coating material 6 is made higher than usual by adding a viscosity agent, it is possible to prevent the coating material 6 deposited on the surface 9a of the object from flowing down. The amount of quick-setting agent added can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing one embodiment of the coating forming method according to the present invention. ... Throwing means ... Covering material ... Target a ... Surface (ground) (slinger)

Claims (1)

[Scope of Claims] A throwing means is provided, a viscous agent is blended into the covering material, the covering material is formed into a lump, the lump-like covering material is supplied to the throwing means, and the lump-like covering material is supplied by the throwing means to the lump-like covering material. A coating forming method in which a coating is formed by throwing a coating material onto the surface of an object.