JPH03277805A - Ceiling suspending apparatus - Google Patents

Abstract

PURPOSE:To remotely perform, on the floor, inspection work of damages, stains and so on of a ceiling installed at a high position so as to prevent any danger, and providing a suction tool for ejecting gas to generate suction force in the case of a large distance from the ceiling while repulsive force in the case of a small distance therefrom. CONSTITUTION:A suction tool A constituted of a gas supply port 1, through which high pressure gas C is introduced, a bowl-like base portion B having an opening at the lower portion thereof and an operating surface 5 at the lower end is mounted on a mount table 9 to which a damage sensor or the like is fixed. The high pressure gas C is introduced into the gas supply port 1 through a pipeline 7. When the operating surface 5 approaches a ceiling G, a space defined between the surface 5 and the ceiling G functions as a diffuser of an ejector; a cushion chamber 4, as a vacuum chamber; and the gas supply port 1, as a nozzle. Therefore, a dangerous inspection work of damages, stains and so on of the ceiling installed at a high position can be performed remotely on the floor.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention can be hung on the ceiling of a high structure or the lower surface of a tank, container, etc. in a non-contact state, and can be used to inspect the surface for scratches, dirt, etc., and to transport it. This invention relates to a ceiling hanging device used for tools, workbenches, etc.

[Conventional technology]

Traditionally, when inspecting or painting the ceiling of a high structure or tank, it is necessary to set up scaffolding from the floor.
Work has been carried out with people standing on top of it, or with inspection machines and tools attached to the end of long poles.

[Problems to be solved by the invention] As mentioned above, the conventional methods require scaffolding for work at heights, and there is also the danger of working at heights, so inspections and work cannot be completed completely. The disadvantage was that it was difficult to carry out.

(Purpose of the Invention) The present invention was made to solve these drawbacks, and by ejecting gas, it efficiently generates bow suction force and repulsion force, and it is possible to hang the bow without touching the ceiling. The object of the present invention is to provide a possible ceiling hanging device.

[Means to solve the problem]

In the ceiling hanging device of the present invention, when the gap between the suction device and the ceiling becomes large by ejecting gas from the suction device, the gap becomes negative pressure and attracts the suction device. For example, the suction device is made up of a suction device that generates positive pressure in the gap, pulls the suction device apart, and is attached to the ceiling without contact while maintaining a constant gap, and a mounting table on which inspection equipment, sensors, etc. are mounted. There is.

[Embodiments of the invention]

Examples of the present invention will be described in detail below with reference to the drawings.
The ceiling hanging device of the present invention is not limited to this example.

1 and 2 show an embodiment of the ceiling hanging device of the present invention, and FIG. 3 shows a suction device.

An upper part (2) having a gas supply port (1) into which high-pressure gas (C) flows, and a bowl-shaped base part (B) formed with a peripheral wall part (3) facing downward to release around the upper part (2) is opened. The peripheral wall portion (3)
A suction tool (A) is formed by providing a wide operating surface (5) continuous in the direction of the peripheral wall (3) at the lower end of the suction device (A).

A mounting base (9) is attached to the suction tool (A) with a port (not shown). The mounting base (9) has a structure in which, for example, a flaw detection sensor or the like can be attached.

The gas supply port (1) is connected to a high-pressure gas supply device (such as a compressor).
(not shown) are connected via a conduit (7).

Gas supply bag toward the ceiling (G) near the operating surface (5) of the suction tool (A)! High-pressure gas (C) sent through pipe [7]! The gas is ejected from the gas supply port (1) into the air chamber (4) formed inside the base (B), passes through the gap between the operating surface (5) and the ceiling (G), and is discharged to the outside.

During this time, the space formed by the operating surface (5) and the ceiling (G) functions as the diffuser of the ejector.
) serves as the vacuum chamber of the ejector, and the gas supply port (++ serves as the Ilm of the ejector nozzle).

Therefore, when the distance between the operating surface (5) and the ceiling (G) is large, the suction IL (A) functions as an ejector, and the pressure in the suction chamber (4) is reduced. At the same time, the operating surface (5
) and the ceiling (G) increases, the static pressure in the gap decreases due to the Bernoulli effect, and both create a large gravitational force against the ceiling (G).

On the other hand, when the gap between the ceiling (G) and the adsorbed working surface (5) becomes smaller, the cushion chamber (4) performs the same function as a pressure chamber type air pump, and the pressure in the cushion chamber (4) increases. At the same time, the gas passing through the gap also produces a cushioning effect, and together generates a repulsive force against the ceiling (G), thereby preventing the suction tool (A) from coming into contact with the ceiling (G). In this way, the suction tool (A) can be suspended from the ceiling (G) without contacting the ceiling CG).

A non-contact sensor (8) for sensing scratches, dirt, etc. on the ceiling (G) is attached to a mounting base (9) attached to the suction tool (A) with bolts (not shown).

In addition, a horizontal injection nozzle Qω is attached to the mounting base (9) for propulsion that can freely control the ejection of gas in four directions, making it possible to move the ceiling hanging device f (E) in any direction. There is.

Signal sensed by sensor (8) and horizontal injection nozzle OI
The control signal D is transmitted by wire or wirelessly.

In addition, in this ceiling hanging device (I7), small items such as sensors (8) can be mounted directly by removing the mounting base (9) and directly using the suction device (A).
) may be attached.

The suction device (A) used in this example is almost the same as the air holding device described in Japanese Patent Publication No. 1-51423, which was invented by the present applicant.

In addition, the suction tool (A) is located in the kutsushiran chamber (4) shown in Fig. 4.
Any device that generates negative pressure in the gap with the ceiling (G) by ejecting gas may be used, such as a suction device (D) that does not have a suction device.

The ceiling suspension device of the present invention can be used not only on ceilings but also on inclined walls and horizontal surfaces, and can also be used as a means for traveling on walls under zero gravity conditions.

〔Effect of the invention〕

As described above, the present invention has made it possible to provide a ceiling hanging device that can be remotely operated from the floor to perform dangerous inspection work for scratches, stains, etc. on high ceilings.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the ceiling hanging device of the present invention, FIG. 2 is a side view thereof, and FIGS. 3 and 4 are side sectional views of the suction tool. In the figure (1) - gas supply port (2) - upper part (3)
~Surrounding wall part (4)~Cutshiran chamber +5), (61~Working surface (8) ~Sensor (9) ~Mounting stand 00~Horizontal injection nozzle (A), (D) ~Adsorption device (C) ~High pressure gas ( E) ~ Ceiling hanging device (G) ~ Ceiling

Claims (1)

[Claims] A ceiling hanging device equipped with a suction device that generates a suction force when the distance from the ceiling is large and generates a repulsive force when the distance is small by ejecting gas.