JPH01121797A - Device for stripping surface of concrete structure - Google Patents

Abstract

PURPOSE:To decrease operator's and ambient exposure by providing a chipping machine consisting of triplet bits fixed to a frame body which has roller bodies on one side and a hood of a rectangular body mounted via an elastic member to the chipping machine to the title device. CONSTITUTION:Wall surface guide rollers 7 which are the roller bodies are provided to upper arms 6a of wall surface guides 6 so that the chipping machine 1 of the air hammer type triplet bits can be moved. The operator, thereupon, presses a dust collecting hood 11 to the wall surface W by gripping handles 3, 3 of the chipping machine 1 with both hands and operates the chipping machine 1. Then, a negative pressure is generated in the dust collecting hood 11 by the suction pressure of a blower device and a rubber skirt 17 and a sliding guide 18 are attracted to the wall surface. The dust caught between the meshes of a brush 16 is guided from a dust collecting hose 13 into a dust collector and is thereby collected and recovered when the wall surface W is stripped by the bits 2 of the chipping machine 1. A damper 10 for regulating the pressure to press the hood absorbs the impact by the blow of the chipping machine 1 and prevents transfer of said impact to the dust collecting hood 11, thus improving the workability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a peeling device for the surface of concrete structures.

[Prior art] For example, when dismantling a nuclear power plant, people enter walls, floors, and ceiling surfaces that are not highly contaminated and remove the contaminated surfaces by a predetermined thickness (for example, 311 mm). .

[Problems to be Solved by the Invention] However, in the above method, the chipping work was performed manually, resulting in poor workability, and contaminants were diffused, causing crystallization on the worker and the surrounding area.

[Object of the Invention] Accordingly, the object of the present invention is to provide a method for peeling off the surface of a concrete structure, which improves work efficiency, prevents the diffusion of contaminants, and reduces liquid crystals on workers and the surrounding area when dismantling a nuclear power plant, for example. We are in the process of providing equipment.

[Means for achieving the object] According to the present invention, a frame body provided with a roller body on one side;
A chisel with a three-speed bit that is not fixed to the frame, and a rectangular shape that is attached to the chisel via an elastic member, covers the periphery of the bit, is open on the bit side, and has a chute protruding perpendicular to the opening. a brush body provided on the inwardly bent edge of the hood body other than the chute side; an elastic skirt body covering the outer periphery of the brush body; A sliding plate body protruding toward the direction, an elastic skirt body provided between the lower end of the sliding plate body and the chute, a brush body provided on the elastic skirt body, and a brush body provided on the chute. A stripping device for the surface of a concrete structure is provided, which includes a connected hose body and a hanging member.

[Operations and Effects of the Invention] Therefore, for example, when dismantling a nuclear power plant, the peeling device is suspended by a hanging member, positioned on a wall surface by a roller body, the hood body is pressed against the wall surface by an elastic member, and the chipping machine is operated. During the 0-work, which allows wall surfaces to be peeled off with good workability, the hose body is connected to a blower device via a dust collector, and the inside of the hood body is made negative pressure to directly collect dust, or contaminants, generated by peeling. Alternatively, the dust caught in the eyes of the brush body can be sucked into the hood body by the wind pressure that flows between the eyes of the brush body at high speed, preventing the spread of contaminants and reducing the amount of inking on the worker and the surrounding area. At this time, the roller body prevents the hood body from swinging due to the impact of the chipping machine, and also stabilizes the positioning of the bit, and the elastic member absorbs the impact caused by the impact of the chipping machine and prevents it from being transmitted to the hood body. This can improve work efficiency.

[Preferred implementation] When carrying out the present invention, it is preferable to use a known double-handled air hammer type chisel. In this way, the device can be stably supported by gripping both handles. Can be done.

When carrying out the present invention, it is preferable to provide the frame with means for making the position of the roller body movable.
The position of the bit relative to the wall can be adjusted. .

In carrying out the present invention, it is preferable to use a sealed foam rubber plate such as neobrane as the elastic member.

When carrying out the present invention, it is preferable to provide the hood body with an air-inflow pulp. In this way, the degree of adsorption to the wall surface can be adjusted by adjusting the negative pressure inside the hood body.

When carrying out the present invention, it is preferable to provide a peeling confirmation window on the side of the hood body facing the chute. This makes it convenient to move the device while checking the peeling state near the bit.

[Example] The present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, an air hose 4 is connected to one handle 3 of a known double-handle type air hammer type 3-speed bit chisel 1, and an air hose 4 is connected to both longitudinal ends of a main body 5. A letter-shaped wall guide 6.6 is fixed. The upper arm 6a of the wall guide 6 is provided with a wall guide roller 7, which is a roller body, and is movable in the direction of the arrow by means of elongated holes and bolts (not shown), for example. A hook 8, which is a hanging member, is fixed to the upper arm 6a via a bracket 8a, and is suspended from a balancer lobe 9 of a balancer (not shown) attached to the ceiling.

A dust collection hood 11, which is a hood body, is attached to the end face of the main body 5, with a pressure adjusting damper 10 being used to press the hood, which is made of a sealed foamed rubber plate such as neoprene, which is an elastic member. This dust collection hood 11 covers the bit 2 of the chipper, and is formed into a rectangular shape with an opening on the butt 2 side and a dust collection chute 12 at the bottom. A dust hose 13 is connected. Further, a peel confirmation window 14 with a transparent plate is provided on the top surface, and an air inflow valve 15 is provided on the side surface. A brush 16 is protruded from the inwardly bent portion 11a of the edge other than the dust collection chute 12 side, and the outer periphery of the brush 16 is covered with a rubber skirt 17 that is an elastic skirt body. The bristles of this brush 16 are parallel to the bit axis, the tip of the bristles is opposite the tip of the bit 2 and the road surface, and the inner periphery is close to the outer periphery of the bit 2. On the other hand, the dust collection chute 12 of the dust collection hood 11
On the side edge, there is a wall sliding plate 1, which is a sliding plate whose end is close to the outer periphery of the bit 2, between the tip of the bit 2 and the road surface.
8 is provided, and a rubber skirt 19 is provided between the lower end of the plate 18 and the dust collection chute 13. The rubber skirt 19 is provided with a brush whose bristles are parallel to the bit axis and whose tips are flush with the road surface of the bit 2.

Next, the effect will be explained.

For example, when dismantling a nuclear power plant, the balancer robe 9 is hung on the hook 8, and the rubber skirt 17 of the dust collection hood 11 is
, the device is suspended so that the sliding guide 18 contacts the wall surface W, the dust collection hose 13 is connected to a blower device via a dust collector (not shown), and the air hose 4 is connected to a compressor device (not shown) to operate the blower. equipment, operating the compressor equipment.

Grip the handle 3.3 of the chisel 1 with both hands and press the dust collection hood 11 against the wall surface W to operate the chisel 1.

Then, the inside of the dust collection hood 11 is made negative by the suction pressure of the blower device, and the rubber skirt 17 and sliding guide 18 are attracted to the wall surface. The degree of this adsorption is determined by the air inflow valve 1
5 allows air to flow in for adjustment.

When the wall surface W is peeled to a predetermined depth with the bit 2 of the chisel 1, the dust or contaminants generated by the peeling are either directly removed by negative pressure, or the dust caught between the eyes of the brush 16 is removed between the eyes of the brush 16. is sucked into the dust collection hood 11 by the air flow shown by the arrow A flowing in at high speed, and the chute 1
2. The dust is guided from the dust collection hose 13 to the dust collection device, where the dust is collected and collected. .

At this time, the wall guide 6 prevents the main body 5 from swinging due to the reaction of the blow of the chipper, and stabilizes the position of the bit 2. This improves work efficiency by absorbing dust and preventing it from being transmitted to the dust collection hood 11.

Then, the peeling status of the bit 2 is confirmed through the peeling confirmation window 14, and the apparatus is moved. At this time, the wall guide roller 7 and the wall sliding plate 18 make the movement smooth, and the brush 16 serves to scrape off the dust adhering to the wall W and suck it into the dust collection hood 11.

[Summary] As explained above, according to the present invention, when dismantling a nuclear power plant, for example, the area around the bit is covered with a dust collection hood to suck in the separated dust to minimize the spread and protect the workers and the surrounding area. Violence can be reduced. In addition, the device can be positioned stably using a wall guide on which the device is suspended, and the device can be moved and the peeling work can be performed using a lifting machine, thereby improving work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a side sectional view showing a state of peeling work. W...Wall surface 1...Chisel machine 2...Bit 6...Wall guide 7...Wall guide roller 8...Hook 10...Hood pressure adjustment damper 11...Dust collection Hood 12... Dust collection chute 13... Dust collection pose 16.20...
Brush 17.19...Rubber skirt 18...
・Wall sliding plate Figure 2 L・-9

Claims (1)

[Claims] A frame body with a roller body on one side, a 3-speed bit chipper fixed to the frame body, and a 3-speed bit machine attached to the frame body through an elastic member that covers the periphery of the bit and opens on the bit side. A rectangular hood body with a chute protruding perpendicular to the opening, a brush body provided on an inwardly bent edge of the hood body other than the chute side, and an outer periphery of the brush body. an elastic skirt body that covers the chute, a sliding plate body protruding inward from the edge of the chute side, an elastic skirt body provided between the lower end of the sliding plate body and the chute; A peeling device for the surface of a concrete structure, characterized in that it includes a brush body provided on an elastic skirt body, a hose body connected to a chute, and a hanging member.