JPH01256660A - Asbestos removing device - Google Patents

Abstract

PURPOSE:To make it possible to remove asbestos, efficiently, completely and rapidly, and to prevent asbestos from scattering into the ambient air so as to enhance the safety by providing an inner hood which is flexible so as to enable close contact with the surface of a ceiling or the like, on the inside of a dust-proof hood. CONSTITUTION:A grinding section 3 for grinding and removing asbestos spray- coated on the surface of a ceiling, a wall or the like 1 has a dust-proof hood 5, and is coupled to a suction part 18. A flexible inner hood 6 adapted to make into close-contact with the surface of the ceiling, wall or the like 1 is arranged on the inside of the dust-proof hood 6 through the intermediary of an air suction part 7. In such a condition that the inner hood 6 is made into close contact with a surface to be ground, the asbestos 2 is ground by the grinding section 3 and is then sucked into the sucking section 18. Accordingly, it is possible to completely remove the asbestos without the asbestos scattering to the outside.

Description

[Detailed Description of the Invention] C. Industrial Application Field] The present invention relates to an asbestos removal machine, and more specifically, it is capable of efficiently and completely removing asbestos sprayed onto ceilings, walls, etc., and is highly safe. Regarding the removal machine.

[Background of the Invention] Asbestos was already known to be a carcinogenic substance in the late 1960s. Currently, its use is prohibited in principle (soon to be completely prohibited), but even after it was discovered that it causes cancer, asbestos has been commonly used as a spray material for ceilings, walls, etc. for many years, so buildings using asbestos are not allowed. still exist in large numbers.

Recently, the removal of asbestos has finally begun to receive attention.

Currently, asbestos removal is carried out using various methods.
The work is roughly as follows.

■Install a curing sheet at the removal site ■Install a ventilation system Moisten the asbestos (to reduce dust) ■Scrape off the asbestos ■Collect the scraped asbestos and pack it into a bag ■Save the asbestos remaining on the removal surface Asbestos removal work, which involves fixing it with a chemical solution and washing the curing sheet with water, removing it, and packing it into bags, is inefficient and incomplete and relies mostly on human labor, leading to longer construction times and higher costs. There is a problem that it takes.

Furthermore, since the working environment is unsafe, workers must take sufficient dust countermeasures (for example, G4 protective clothing and masks), which further reduces work efficiency. I was letting it happen.

For this reason, it has been desired to develop a device that can efficiently and completely remove asbestos quickly and that can also perform safe work.

[Object of the Invention] Therefore, the present invention is capable of efficiently and completely removing asbestos sprayed onto ceilings, walls, etc.

Moreover, the object is to provide a highly safe asbestos removal machine.

[Means for Solving the Problems] The present inventor has made extensive studies to achieve the above object, and as a result, has arrived at the present invention.

That is, the asbestos removing machine according to the present invention is an asbestos removing machine that grinds and removes asbestos sprayed on ceilings, walls, etc., while sucking it with a grinding section having a dustproof hood connected to a suction section, The dustproof hood is characterized in that an inner hood is provided inside the dust-proof hood through an air intake part and has a flexibility that can be closely attached to the ceiling, wall surface, etc.

[Function] According to the present invention, the grinding part for grinding asbestos cleanses the dust-proof hood connected to the suction part, and a flexible inner hood is provided inside the dust-proof hood through an air intake part. With the inner hood in close contact with the grinding surface,
By grinding asbestos with the grinding part and suctioning it with the suction part, asbestos can be completely removed without scattering to the outside.

[Example] An embodiment of the present invention will be described below.

FIG. 1 is a cross-sectional view showing an embodiment of the asbestos removing machine and the dust-proof hood of the asbestos remover according to the present invention, FIG. 2 is a schematic side view showing an embodiment of the asbestos removing machine according to the present invention, and FIG. FIG. 2 is a schematic side view showing an example of a suction section and a dust collector.

In the figure, l is the ceiling sprayed with asbestos 2, and 3
is a grinding section that grinds the asbestos 2 and removes it from the ceiling 1.

The grinding part 3 is made of a hard brush, and rotates to grind the asbestos 2 and remove it from the ceiling l.

4 is a motor for driving the grinding section 3, and the grinding section 3 is rotated by a drive transmission means 4A such as a chain or an endless belt. The rotation direction of the grinding unit 3 may be clockwise or counterclockwise as shown in the drawing (hereinafter, all directions are indicated on the drawing), but it is preferable to rotate clockwise, which is the grinding direction. The asbestos 2 is pulled off from the ceiling 1, which increases the grinding force, which is preferable.By further rotating the asbestos to the right, the asbestos 2 that has been ground into dust is scattered to the right, which is the grinding direction.
This will hit the inner hood 6 (described later) on the side in the grinding direction,
At this point, the asbestos 2 in the right inner hood 6 has not yet been ground, so the VER degree is high corresponding to its thickness, which is preferable because the asbestos 2 in the form of dust is unlikely to leak to the outside.

In this embodiment, as shown in the figure, a rotating brush is used as the grinding part 3, but the present invention is not limited to this.
Any material can be used as long as it can be completely removed from the sprayed surface such as the ceiling 1 and has excellent wear resistance, such as a cutting drum or a milling cutter for concrete cutting. The grinding part 3 is preferably one that is easy to replace and has a shape and material that makes it difficult for the ground asbestos 2 to adhere to it.
A brush may be provided to scrape off the adhered asbestos 2 so that it does not adhere to the asbestos 2 and reduce the grinding power.Furthermore, when the ceiling l has an uneven surface, a brush with a shape corresponding to the unevenness is used. It is preferable.

In addition, when grinding the asbestos 2, it is preferable to also grind the surface layer of the ceiling l thinly in order to completely remove the stone u2.

The grinding section 3 has a dustproof hood 5, and the dustproof hood 5
is for preventing asbestos 2 ground into dust by the grinding section 3 from scattering into the outside air, and the dustproof hood 5 is connected to the suction section 18 via a duct 8. The grinding section 3 is arranged to slightly protrude from the dustproof hood 5 in order to grind the asbestos 2, and the degree of protrusion is determined by the thickness of the asbestos 2 to be ground. In this embodiment, the dustproof hood 5 opens upward for grinding the ceiling 1, but the opening direction can be changed and the installation angle of the dustproof hood can be adjusted arbitrarily to accommodate sloped ceilings, walls, etc. The dustproof hood 5 may be installed by making any of the support stand 9, the fine adjustment mechanism lO, and the stand 11 adjustable in angle to be able to adjust the angle of the support stand 9, the fine adjustment mechanism lO, and the stand 11, which will be described later. may be fixed. Furthermore, it is preferable that the dustproof hood 5 is provided so as not to come into contact with the asbestos 2, in order to smoothly take in air from the air intake section 7, which will be described later, and to prevent it from coming into contact with the asbestos 2. This is to prevent asbestos 2 from falling out of the dustproof hood 5 due to the asbestos 2.

The suction part 18 takes in air from the air intake part 7 and suctions it through the duct 8 to suction the ground asbestos 2 in the dustproof hood 5, and the suction force has a wind speed of 5 m/sec or more. Preferably, the aspirated asbestos 2 is collected by a dust collector 1
(In Figure 1, the solid line arrow X represents the flow of air, and the dotted line arrow Y represents the flow of asbestos 2 dust.) Any type of suction device that has sufficient suction power can be used, and various known types can be used. Further, as the dust collector 18, the suction section 18
Any material that can collect asbestos 2 aspirated by the asbestos 2 without leaking it to the outside may be used.

Various known materials can be used.

An inner hood 6 is provided inside the dustproof hood 5 via an air intake part 7. The inner hood 6 is made of a flexible material such as rubber, and due to its flexibility, it can be brought into close contact with the grinding surface (the surface of the asbestos 2 before grinding of the stone MB 2, and the surface of the ceiling 1 after grinding). This prevents asbestos 2, which becomes dust due to grinding, from scattering outside the dustproof hood 5.

In order to increase dustproofness, the inner hood 6 may be made of two or more layers of rubber with different hardnesses, or a brush-like material may be further provided inside the inner hood 6. , the dust remaining on the ground surface of the ceiling 1 may be swept off. Also, if the ceiling 1 has unevenness, similar to the grinding part 3, the inner hood 6 is also provided with unevenness corresponding to the unevenness. Furthermore, in places where the asbestos 2 is ground and the ceiling l is exposed, the degree of adhesion of the inner hood 6 is reduced by the thickness of the asbestos 2, so in order to prevent this reduction, the degree of adhesion of the inner hood 6 is The hood 6 may be made longer.

By closely contacting the surface of the ceiling 1 or the asbestos 2 sprayed onto the ceiling 1, the inner hood 6 can prevent the asbestos 2 that has been ground into dust from leaking to the outside. Furthermore, due to unevenness or steps in the ceiling 1 etc., the ceiling 1 and inner hood 6
Even if a gap is formed between the asbestos 2 and asbestos 2 that has become dust leaks from the gap, since the inner hood 6 is provided inside the dustproof hood 5 via the air intake 7, it will not leak from the air intake 7. Since the dust is sucked into the dustproof hood 5 along with the air taken in, leakage to the outside and scattering into the air can be completely prevented.

Reference numeral 9 denotes a support stand that supports the grinding section 3, motor 4, and dustproof hood 5, and the support stand 9 is installed on a pedestal 11 via a fine adjustment mechanism section 10. The fine adjustment mechanism section lO and the pedestal 11 are height adjustment mechanisms for making the grinding section 3 correspond to the height of the ceiling 1, etc. First, after setting the rough height using the pedestal 11, the fine adjustment mechanism section IO by ceiling 1
The surface layer is slightly ground and the height of the inner hood is finely adjusted so that it comes into close contact with the ceiling l.

The fine adjustment mechanism section 1O is constituted by a mechanism such as a hydraulic cylinder or a spring, and is used not only to finely set the height of the grinding section 3 as described above.

It acts as a cushion to cope with or absorb the slight unevenness and inclination of the ceiling l, the vertical movement or shock caused by the ups and downs of the floor surface when the pedestal 11 is moved, and this function prevents asbestos 2 from remaining and internalizing due to uneven grinding. To prevent a gap between a hood 6 and a ceiling l.

The pedestal 11 has a two-stage configuration of an upper pedestal 11A and a lower pedestal 11B, and when transported to the work place, the upper pedestal 11A
Lower it and carry it in through an entrance such as a door. After 111 people, the wire 12 is hoisted up by the hoist 13 and the upper frame 11 is lifted up.
A is raised to the working height and fixed with the fixing part 14. The lifting mechanism for the upper frame 11A is not limited to the illustrated wire 12 and hoist 13, but can be raised and lowered by various means such as a hydraulic jack. The height of the pedestal 11 shall be such that it is possible to grind the ceiling 1 when the upper pedestal 11A is raised, and that it can pass through the entrance/exit of the work area when lowered. However, if the height of the entrance/exit is significantly different from the height of the ceiling, the height of the pedestal 11 is set as shown in the figure. It is preferable not to be limited to the two-stage configuration, but to adopt a three-stage configuration or a multiple-stage configuration.

Reference numeral 15 denotes a traveling motor installed on the lower pedestal 11B, which drives wheels 18 and causes the pedestal 11 to travel at a constant speed, thereby moving the grinding section 3 and grinding the asbestos 2 over the entire surface of the ceiling l. The traveling motor 15 may be of a variable speed type, and the speed may be reduced at locations where it is difficult to grind the asbestos 2.

Further, the vehicle may be driven by a worker without relying on a power source such as a motor.

Reference numeral 17 denotes an operation panel, which is configured so that the operation of the grinding section 3 and the operation of the traveling motor 15 can be centrally controlled.

As above, one embodiment of the asbestos removing machine according to the present invention has been explained based mainly on the mode of polishing and removing asbestos 2 sprayed on the ceiling l. However, when the asbestos removing machine is applied to a wall surface, In addition to changing the opening direction of the opening direction, it is also possible to respond by attaching the support base 9 that supports the grinding part 3, motor 4, and dustproof hood 5 to the side surface of the upper frame 11A via the fine adjustment mechanism part IO. Yes, in this case, the fine adjustment mechanism of the fine adjustment lifting/lowering section 1O works, which is preferable.

Furthermore, the asbestos removal machine according to the present invention is not limited to an asbestos removal machine that is installed on a pedestal lO and travels (a pedestal installed type), but can be used as a small handy type that can be carried and operated with one or both hands. Fine spraying that is difficult to grind can also be done in different places.In this case, a handy type duct can be connected to the pedestal type duct to connect the suction part 18.
The dust collector 18 and dust collector 18 may be shared so that work can be performed at the same time.

[Effects of the Invention] According to the present invention, asbestos sprayed on ceilings, walls, etc. can be efficiently and completely removed quickly, so the work period can be shortened and Work costs can be reduced.

Moreover, since the asbestos that has been ground into dust does not scatter into the air, it is possible to work in a safe working environment, and there is no need to install curing sheets or take excessive dust countermeasures. .

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the asbestos removing machine and the dust-proof hood of the asbestos remover according to the present invention, FIG. 2 is a schematic side view showing an embodiment of the asbestos removing machine according to the present invention, and FIG. FIG. 2 is a schematic side view showing an example of a suction section and a dust collector. 1: Ceiling 2 Asbestos 3: Grinding section 4: Motor 5: Dust-proof hood 6: Inner hood 7: Air intake section 8: Duct 9; Support stand lO: Fine adjustment mechanism section 11: Frame 12: Wire 13: Hoisting machine 14: Fixed part 15: Traveling motor 16 Two wheels 17: Operation panel 18: Suction part 19: Dust collector

Claims (1)

[Claims] An asbestos removal machine that grinds and removes asbestos sprayed onto ceilings, walls, etc. by suctioning it with a grinding section that has a dustproof hood connected to a suction section, the machine comprising: An asbestos removal machine characterized by being provided with a flexible inner hood that can fit tightly against the ceiling, wall, etc.