JPS6342709Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention makes it possible to freely adjust the suction force to the running surface by changing the installation height of the skirt installed at the bottom opening of the hollow chamber. Regarding adsorption type traveling vehicles.

[Conventional technology]

A suction-type traveling device comprising a hollow chamber, a suction device that attracts the lower opening of the hollow chamber onto a traveling surface, a traveling wheel that comes into contact with the traveling surface, and a drive device that drives the traveling wheel in a vehicle body frame. For example, the vehicle is
This method is known from Japanese Utility Model Publication No. 56-17259, Japanese Utility Model Publication No. 57-9175, and the like.

[The problem that the idea aims to solve]

By the way, in such a suction type traveling vehicle, the suction force to the traveling surface is determined by the ability of the suction device, and is usually kept at a constant level. However, when the running surface is a tile surface, the suction force required on the tile surface differs depending on the size of the tile. In other words, the size of the joints is generally proportional to the size of the tile, so larger tiles have larger joint widths and depths, and smaller tiles have smaller joint widths and depths. In this case, a large amount of air is introduced through the joints, and a large suction force is required. Therefore, the suction force of the suction device changes as the size of the tile changes. Therefore, when this suction type traveling vehicle is used in an exterior wall material peeling probe as shown in Utility Model Application No. 57-97156, the traveling performance differs depending on the size of the tile.
In other words, the capacity of the suction device (the suction power of the blower) is designed to suit large tiles, so in the case of small tiles, the degree of adhesion (deformation) of the skirt installed at the bottom opening of the hollow chamber is As a result of being larger than necessary, the sliding resistance during running is increased, a large amount of running energy is consumed, and the amount of skirt wear is increased. For example, if the capacity of the suction device is designed to suit small tiles, the above problem will disappear, but on the other hand, in the case of large tiles, not only will the suction reliability be poor, but the running capacity (driving force of the running wheels) will increase. An inevitable drawback arises. Furthermore, if a suction device with different capacities is provided depending on the size of the tile, none of the above problems will be solved, but it will have to be replaced every time the size of the tile differs, reducing work efficiency and increasing the number of different types of suction devices. The need for a suction device increases costs and makes management difficult.

Note that Japanese Patent Publication No. 54-21611 discloses a suction type vehicle equipped with auxiliary wheels in order to stabilize its running.

However, even in this known example, the height of the skirt cannot be adjusted as described above, and the same problem occurred.

This idea was made to solve the problems of the conventional method, and the purpose was to easily adjust the installation height of the skirt by providing a height adjustment function to the auxiliary wheels to ensure running stability. To provide an adsorption type traveling vehicle that can be changed to

[Means to solve the problem]

The suction type traveling vehicle according to this invention includes a body frame having a top wall, a side wall, and an opening at the bottom wall, a hollow chamber formed by attaching the upper end of an annular curtain to the inside of the body frame, and An annular mounting frame attached to the entire circumference of the lower end of the curtain forming the chamber, an annular skirt attached to the entire circumference of this attachment frame, and a ring-shaped skirt provided on the vehicle body frame to open the bottom opening of the hollow chamber. a suction device that attracts suction onto the running surface; a plurality of running wheels that are provided on the vehicle body frame so as to be located inside the annular skirt and are driven by a drive device and come into contact with the running surface; A suction type traveling vehicle having a plurality of auxiliary wheels mounted on a mounting frame attached separately from the vehicle body frame so as to be located inside a skirt of the body frame, and a plurality of auxiliary wheels abutting on the running surface, the plurality of auxiliary wheels A suspension spring, one end of which is attached to the inside of the vehicle body frame, is connected to the suspension spring, and a bracket is fixed to the mounting frame, and the bracket and auxiliary are attached so that the mounting frame can be moved in the height direction while maintaining a horizontal state. It is configured to be fastened to the wheels.

[Effect]

In this invention, by fastening the auxiliary wheel and the mounting frame, the position of the mounting frame can be changed in the height direction while maintaining the horizontal state.

〔Example〕

An embodiment of this invention will be described below with reference to FIGS. 1 and 2. The structure of the suction type traveling vehicle shown here is the same as that of the conventional one except for the invented part, and thus the explanation thereof will be omitted and only the invented part will be explained here.

In the figure, 1 is a car body frame, 2 is a hollow chamber formed inside the body frame, 3 is a skirt installed in the lower opening 4 of the hollow chamber 2, and 5 is a crawler (traveling) installed in the car body frame 1. wheels).

The skirt 3 is fixed to a mounting frame (here, an L-shaped angle) 6 that is not connected to the vehicle body frame 1. The mounting frame 6 has its four corners connected to auxiliary wheels 8 installed at the four corners of the vehicle body frame 1 via suspension springs (plate springs) 7, respectively.
The auxiliary wheel 8 and the suspension spring 7 are bolted together via a bracket 9, and the bracket 9 is bolted to a bracket 10 fixed to the mounting frame 6. Bracket 8 and Bracket 10
As shown in FIG.
12 are bored, and both brackets 9, 10 are fastened by bolts 13 and nuts 14 inserted into the vertical elongated holes 11, 12. Therefore,
The skirt 3 is attached to the auxiliary wheels 8 at the four corners of the vehicle body frame 1.
It is attached via. Note that 15 in the figure is a vinyl curtain that connects the mounting frame 6 and the vehicle body frame 1 to form the hollow chamber 2.

According to the suction type traveling vehicle of the embodiment configured as described above, the installation height of the skirt 3 relative to the auxiliary wheels 8 can be changed by loosening the bolts 13 through the vertical elongated holes 11 and 12. becomes possible. In other words, the degree of contact with the running surface 16 can be adjusted freely. Therefore, if the running surface is made up of large tiles, the installation height should be adjusted to increase the degree of adhesion, and if it is made up of small tiles, the installation height should be adjusted to reduce the degree of adhesion. By changing , even if the suction capacity of the suction device is fixed, it is possible to obtain a suction force that corresponds to the size of the tile. In the illustrated case, both brackets 9, 10
Although the vertical elongated holes 11 and 12 are provided in the brackets 9 and 12, the installation height of the skirt 3 can be changed in the same way even if the vertical elongated holes are provided in either one of the brackets 9 or 10.

The skirt 3 is attached to the vehicle body frame 1 via the auxiliary wheels 8 because the auxiliary wheels 8 in contact with the running surface 16 provide a well-balanced close contact with the running surface 16. be.

Figure 4 shows another embodiment of this invention.
A threaded rod 18 is installed vertically on the flange 17 of the auxiliary wheel 8', and the threaded rod 18 is inserted into the horizontal bent piece 19 of the bracket 10', and the nuts 20 and 21 are inserted from the upper and lower surfaces of the horizontal bent piece 19. The mounting frame 6' of the skirt 3' is connected by tightening. According to this, the height of the skirt 3' can be adjusted by loosening and adjusting both nuts 20, 21.

[Effect of idea]

As mentioned above, this invention has a top wall, a side wall,
A car body frame with an opening in the lower wall, a hollow chamber formed by attaching the upper end of a ring-shaped curtain to the inside of this car body frame, and an annular attachment that is attached to the entire circumference of the lower end of the curtain forming this hollow chamber. a frame, an annular skirt attached to the entire circumference of the mounting frame, a suction device provided on the vehicle body frame for sucking the lower opening of the hollow chamber onto the running surface, and a suction device located inside the annular skirt. A plurality of running wheels are provided on the vehicle body frame so as to be driven by a drive device and come into contact with the running surface, and a plurality of running wheels are installed separately from the vehicle body frame so as to be located inside the annular skirt. In an adsorption type traveling vehicle having a plurality of auxiliary wheels provided on a mounting frame and abutting on the running surface, a suspension spring having one end attached to the inside of the vehicle body frame is connected to the plurality of auxiliary wheels, The bracket is fixed to the above-mentioned mounting frame, and the bracket and the auxiliary wheels are fastened together so that the mounting frame can be moved in the height direction while maintaining a horizontal state. After loosening the fastening between the skirt and the bracket and allowing both to move, the installation height of the skirt can be changed by simply moving the bracket the required distance and refastening both at that position. can do. Therefore, when the running surface is a tile surface, the suction force required for the running surface can be easily set by simply adjusting the installation height of the skirt according to the size of the tile. Furthermore, since the height adjustment mechanism is performed inside the interior, which is isolated from the outside world,
There is no risk of interfering with suction or hindrance to equipment installed outside or to workers.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of this invention.
FIG. 2 is a bottom view of the same. FIG. 3 is an enlarged longitudinal cross-sectional view showing the joint between the skirt and the auxiliary wheel.
FIG. 4 is a longitudinal sectional view of the same different embodiment. Explanation of symbols of main parts, 1...Vehicle frame, 2...
...Hollow chamber, 3...Skirt, 4...Opening, 5...
Crawler (running wheel), 6, 6'...Mounting frame, 8,
8'... Auxiliary wheel, 9, 10, 10'... Bracket, 11, 12... Vertical long hole, 13... Bolt,
14...Nut, 16...Running surface, 17...Flange, 18...Threaded rod, 19...Horizontal bent piece, 2
0,21...Natsuto.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A car body frame having a top wall and side walls with an open bottom wall, a hollow chamber formed by attaching the upper end of an annular curtain to the inside of this car body frame, and an annular mounting frame attached to the entire circumference of the lower end of the curtain forming a hollow chamber; an annular skirt attached to the entire circumference of the mounting frame;
A suction device is provided on the vehicle body frame to attract the lower opening of the hollow chamber onto the running surface, and a suction device is provided on the vehicle body frame located inside the annular skirt and is driven by a drive device to drive the vehicle. a plurality of running wheels that abut on the running surface; and a plurality of auxiliary wheels that are provided on a mounting frame attached separately from the vehicle body frame and located inside the annular skirt and that abut on the running surface; In the adsorption type traveling vehicle having the above-mentioned plurality of auxiliary wheels,
A suspension spring with one end attached to the inside of the vehicle body frame is connected, a bracket is fixed to the mounting frame, and the bracket and auxiliary wheels are connected so that the mounting frame can be moved in the height direction while maintaining a horizontal state. An adsorption type traveling vehicle characterized by being configured to fasten. (2) A suspension spring whose one end is attached to the vehicle body frame is connected to the plurality of auxiliary wheels via a bracket, and this bracket is fastened to a bracket fixed to the mounting frame by bolts and nuts, and both brackets are connected at least 2. The suction type traveling vehicle according to claim 1, which is characterized in that a long hole is provided in one of the ends, and the bracket and the auxiliary wheel are connected to each other through the long hole. (3) A suspension spring, one end of which is attached to the vehicle body frame, is connected to the plurality of auxiliary wheels, a screw rod is provided vertically, a bracket having a horizontal bending piece is fixed to the mounting frame, and the screw rod is connected to the bracket. Utility model registration claim 1, characterized in that the bracket is inserted into a horizontally bent piece and tightened with nuts from the upper and lower surfaces of the horizontally bent piece to connect the bracket and the auxiliary wheel. Adsorption type traveling vehicle.