JPH0116718B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction traveling device applied to a wall decontamination device or the like.

This type of adsorption traveling device currently in practical use is known as a magnetic type or a sliding space adsorption type. The magnetic type can only be applied to steel plates, and its uses are limited. For this reason, the sliding space suction type is often used, and in this type, flexible pieces made of rubber or resin are attached to the outer periphery of a bottomless cylinder to form an airtight chamber on the suction surface. In many cases, it is driven by an externally driven drive shaft, and vertical movement is performed by a suspension wire.

However, the sliding vacuum suction type has (1) high running resistance with the suction surface, and is difficult to apply to rough surfaces. Furthermore, synthetic resin is used for the flexible piece, but this wears out.

(2) Since the directions of the individual flexible pieces with respect to a predetermined running direction are different, it is difficult to design the shape.

The present invention improves the drawbacks of the prior art, eliminates the running resistance between the suction surface, is applicable to rough surfaces, and can easily adhere to uneven surfaces. The object of the present invention is to provide a suction traveling device.

The structure of the present invention that achieves the above object is summarized as follows. That is, an endless belt having a cross section equal to the notch step of the rollers is stretched in parallel to two rollers, front and rear, each having an annular notch step on both side edges.
An airtight box is provided that is in close contact with the cylindrical surface of the roller and the side surface of the lower part of the belt and covers the upper part of the roller, so that an airtight space can be formed between the airtight box and the suction surface. The airtight space is evacuated and the rollers are driven while adhering to the running surface, thereby making it possible to run on the suction running surface.

Examples will be explained below. In FIGS. 1 and 2, reference numeral 1 indicates an adsorption running surface. 2 is a driving roller, and 2' is a running roller. As shown in FIG. 2, these rollers 2, 2' are provided with annular notched step portions 3, 3 on both side edges. Reference numeral 4 denotes an endless belt stretched over the notched step 3, and has the same cross-sectional shape as the notched step 3. The roller 2 and the endless belt 4 may be made of a material that is soft and elastic and has good adhesion to a wall surface, even if the strength is somewhat weak, such as foam rubber.

A drive shaft 5 of the drive roller 2 is driven by a drive motor 6 via an output shaft 7, a chain, etc. 8.
9 is a frame, and the drive shaft 5 is supported by the frame.

10 is an airtight box. It is in close contact with the cylindrical surfaces of the front and rear rollers 2, 2' (see line a in FIG. 2) and the lower side of the endless belt 4 (see line b in FIG. 1). Therefore, a completely airtight space is formed between this airtight box 10 and the running surface 1. 11 is drive wheel 5
This is a sealing cover that covers the slit formed between the airtight box 10 and the airtight box 10.

Reference numeral 12 denotes a spring for lifting the airtight box, and the airtight box 10 is always urged upward by this spring. In this way, the contact position between the airtight box 10 and the rollers 2, 2' is set closer to the suction surface 1 than the roller axis surface, and the airtight box 10
By using a structure in which the airtight box 10 is suspended from the main body of the device by a spring 12, the airtight box 10 is initially attached to the rollers 2,
Once attracted, the airtight box 10 is pushed down by the adsorption force, creating a gap between the rollers 2 and 2', which reduces the adsorption force and prevents the rollers, belt, and airtight box 10 from being attracted. It is possible to prevent mutual contact resistance from increasing more than necessary. Reference numeral 13 denotes an exhaust pipe fitting, through which a pipe connecting to the space device is connected. A bellows 14 is provided at the connection between the airtight box 10 and the mounting bracket 13.

FIG. 3 is a cross section similar to FIG. 2. In this example, a protrusion 4a is provided on the inner circumferential surface of the endless belt 4, and a concave groove having the same cross-sectional shape is provided on the roller 2 in correspondence with the protrusion 4a. By doing so, the engagement between the endless belt 4 and the rollers 2 can be made more reliable.

FIG. 4 shows another example in which the engagement between the endless belt 4 and the roller 2 is ensured. In this case, the inner circumferential surface of the belt 4 is inclined, and correspondingly, the notched stepped portion on the roller side is also formed in the same shape.

FIG. 5 is a partially cutaway sectional view of the same position as FIG. 1. This example is applicable not only to flat surfaces but also to concave or convex surfaces (concave curved surfaces in the figure). In this case, the tension of the endless belt 4 can be adjusted using a belt presser 15 with a roller 16 at the lower end (in the case of a flat wall, the belt presser 15 is made to protrude, and in the case of a concave or convex wall, the belt presser 15 is made to protrude). ), the contact surface of the endless belt 4 with the wall surface always acts in close contact with the wall surface due to the vacuum pressure in the airtight box, so the contact surface of the endless belt 4 with the wall surface conforms to the shape of the wall surface. do.

In this case, the endless belt 4 was made sufficiently thick so that the side surfaces of the airtight box 10 would not come off the sides of the belt 4 and airtightness would be maintained.

In this way, the endless belt 4 adapts to the wall surface and adsorbs it even on a concave or convex surface, making it possible to run in close contact with the wall surface.

In FIG. 6, the rollers are divided into left and right rollers 2a and 2b, and are driven independently while closely contacting the suction surface, thereby facilitating direction change.

Now, the rotating brush,
Cleaning equipment such as seat water nozzles, radiation (power)
By attaching measurement devices such as probes, ultrasound, X-ray inspection devices, fiberscopes, surface sample collection devices, and rescue equipment such as guiding reels, remote work can be easily carried out in places that are difficult to access, such as at high places. be able to.

Furthermore, by providing a high-pressure water jet nozzle, a rotating water washing brush, and a paint spray nozzle inside the airtight box, remote control and prevention of contamination from spreading to the outside are possible.

As explained above, since the endless belt of the present invention attracts the suction surface, the resistance is extremely small compared to the conventional vacuum suction device in which a flexible piece is attached to the outer periphery of a cylinder. It can also be applied.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the suction traveling device of the present invention. FIG. 2 is a cross-sectional view taken from FIG. Figures 3 and 4 show other embodiments of the endless belt. Figure 5 shows an example of a longer endless belt. Figure 6 shows an example where the roller is divided into two parts. In the figure: 1... suction running surface, 2... drive roller, 2'... running roller, 3... annular notch step, 4...
Endless belt, 5... Drive wheel, 6... Drive motor, 7... Output shaft, 8... Chain, 9... Frame,
DESCRIPTION OF SYMBOLS 10...Airtight box, 11...Slit, 12...Airtight tube lifting spring, 13...Exhaust pipe mounting bracket, 14...
Bellows, 15...belt presser, 16...roller.

Claims (1)

[Claims] 1. An endless belt with a cross section equal to the notch step of the roller is stretched parallel to two rollers, front and rear, each having an annular notch step on both side edges, and the cylindrical surface of the roller and the side surface of the lower part of the belt are An airtight box is provided that is in close contact with the roller and covers the upper part of the roller, so that an airtight space can be formed between the airtight box and the suction surface, and the airtight space is evacuated to drive the roller while adhering to the running surface. A suction traveling device characterized in that the suction traveling device is capable of traveling on a suction traveling surface by doing so.