JPH08244621A - Levitating type working device - Google Patents

Abstract

PURPOSE: To prevent the rapid drop of an air pressure from an air cushion mechanism even if an air supply pipe comes off by installing a check valve to the air entrance of an accumulator consisting of the frame body of a work stand made of a hollow material and installing one end of piping reaching the air cushion mechanism on the air exit of the accumulator. CONSTITUTION: When a valve 13 is opened, an air with high pressure generated by an air compressor 11 is supplied in the accumulator 3 of a work stand 2 through an air supply pipe 12 → a check valve 7 → an air entrance 5. The air in the accumulator 3 is supplied to an air cushion mechanism 4 through an exit 6 → a flow rate adjust valve 17 → a piping 16. By the way, when the air supply pipe 12 comes off from the air entrance 5, etc., by any reasons, as the reverse flow of the air in the accumulator 3 is prevented by the check valve 7, it is not leaked from the air entrance 5. As the air left in the accumulator 3 is jetted gradually from the air cushion mechanism 4, it is lowered gradually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a floating work device.

[0002]

2. Description of the Related Art FIG. 5 is a perspective view of a conventional levitation type working apparatus. The levitation type working apparatus 100 shows a workbench 101 and a plurality of legs 101a ... (...) of this workbench 101. The same applies hereinafter. ) The air cushion mechanism 102 attached to the lower part ...
The air is blown from the bottom of the air cushion mechanism 102. Each air cushion mechanism 102 ... And the air compressor 103 are connected by an air hose 104. In addition, 105 is an air intake, 106 ... is a flow regulating valve. When air is ejected from the bottom of the air cushion mechanism 102, the workbench 101 floats above the floor. If it floats, the frictional resistance with the floor becomes small, so that the workbench 101 can be moved in all directions with a small pushing force or pulling force.

[0003]

Air compressor 10
When 3 is placed on the floor and the workbench 101 is moved, the air hose 104 may sometimes come off the air intake 105. When the air hose 104 comes off the air intake 105, the air pressure injected from the air cushion mechanism 102 ... Suddenly decreases, and the levitation force of the workbench 101 sharply decreases.
As a result, the workbench 101 hits the floor surface strongly, and there are inconveniences such as load on the legs 101a and scratches on the floor surface. An object of the present invention is not to drastically reduce the air pressure injected from the air cushion mechanism even if the air supply pipe is disconnected from the air intake port or the like.

[0004]

In order to achieve the above object, the present invention provides an air cushion mechanism in which the air jetted from the bottom causes the air cushion mechanism to float above the floor surface, and a workbench having the air cushion mechanism attached to the lower portion. In the floating work device, the work table frame is made of a hollow member to form an accumulator, a check valve is attached to the air intake port of the accumulator, and the air cushion mechanism is connected to the air discharge port of the accumulator. The feature is that one end of the pipe is attached.

[0005]

Even if the air supply pipe is disconnected from the air intake port or the like, since the check valve is provided, the air in the accumulator does not leak from the air intake port and is gradually ejected from the air cushion mechanism. For this reason, the air pressure ejected from the air cushion mechanism does not suddenly decrease, and the workbench gradually lands.
Also, since the workbench also served as the accumulator,
No separate accumulator is required.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a levitation type work apparatus according to the present invention. The levitation type work apparatus 1 includes a work table 2 and legs 2a of the work table 2.
It is composed of a plurality of air cushion mechanisms 4 ... The workbench 2 is composed of a frame body having a rectangular shape in plan view in which four legs 2a ... And beams 2b ... Are combined.
The beams a and the beams 2b are formed of hollow members to form an accumulator 3. That is, by connecting all the joints of the hollow members made of square pipes or round pipes to each other to form an airtight container as a whole, the entire frame of the workbench 2 also serves as the accumulator 3. Here, the accumulator 3 is a container that stores pressurized air.

The frame (accumulator 3) of the workbench 2 is provided with an air intake 5 for supplying air to the side portion,
The air outlets 6 ... Are attached near the legs 2a.
A check valve 7 is attached to the air intake 5 in order to prevent backflow of air in the accumulator 3, and an air supply pipe 12 leading to an air compressor 11 serving as an air source is attached to the check valve 7. Mounted. Air supply pipe 1
Reference numeral 2 is an air hose or the like. One end of a pipe 16 such as an air hose reaching the air cushion mechanism 4 is individually attached to the air discharge port 6.

FIG. 2 is a piping system diagram of the levitation type working apparatus according to the present invention. An air intake port 5 and an air discharge port 6 are attached to an accumulator 3 and a check valve 7 is attached to the air intake port 5.
Is attached, the air supply pipe 12 is attached between the check valve 7 and the air compressor 11, and the pipes 16 are individually attached between the air cushion mechanism 4 ... And the air discharge port 6. Indicates that. Reference numeral 13 is a valve attached to the air compressor 11, and 14 is a joint called a quick joint for attaching the air supply pipe 12 to the check valve 7 with one touch. Further, 17 is a flow rate adjusting valve, which adjusts the flow rate of air supplied to each air cushion mechanism 4 to adjust the air injection amount of each air cushion mechanism 4.

FIG. 3 is a block diagram of an air cushion mechanism according to the present invention. The air cushion mechanism 4 has a bottomed cylindrical hood 21 and a flexible hood 21 attached to the lower portion of the hood 21. It is composed of a diaphragm 27. Hood 2
1 is an upper hood portion 2 which is bolted to the lower portion of the leg portion 2a
2, a side wall portion 23 around the hood portion 22, a central protrusion 24 that hangs from the lower surface of the central portion of the hood portion 22, and an air / air intake 25 provided in the upper portion of the hood portion 22. The air intake 25 is connected to the accumulator 3 by a pipe 16 as shown in FIG. The diaphragm 27 is a bell mouth-shaped member whose outer peripheral portion is joined to the lower portion of the peripheral wall portion 23 of the hood 21 and whose inner peripheral portion is joined to the central protruding portion 24. The donut-shaped space sealed by the hood 21 and the diaphragm 27 forms an air chamber 28. The air chamber 2 is provided near the inner periphery of the diaphragm 27.
A large number of injection holes 29 for injecting air from 8 are opened.

Next, the operation of the floating work device 1 having the above-mentioned structure will be described with reference to FIGS. 1, 3 and 4. As shown in FIG. 1, when the valve 13 is opened, the high-pressure air generated in the air compressor 11 passes through the route of the air supply pipe 12 → the check valve 7 → the air intake 5 and the frame of the workbench 2 (accumulator 3).
Supplied within. Then, the air in the accumulator 3 is supplied to the air cushion mechanism 4 ... through the route of the air discharge port 6 ...? The flow rate adjusting valve 17 ...?

As shown in FIG. 3, the air cushion mechanism 4 has a peripheral wall portion 2 of the hood 21 when air is not supplied.
3 The lower part is in contact with the floor surface F. FIG. 4 is an operation diagram of the air cushion mechanism according to the present invention.
When high-pressure air is supplied to the air chamber 28, the air fills the air chamber 28 and inflates the diaphragm 27. Then, the air is jetted from the jet holes 29 of the diaphragm 27, flows as shown by an arrow in this figure, and is jetted to the outside from the gap between the floor surface F and the diaphragm 27. For this reason,
The air cushion mechanism 4 floats from the floor surface F, and the workbench 2 also floats accordingly. Therefore, as shown in FIG. 1, since the workbench 2 floats from the floor surface F, the frictional resistance between the workbench 2 and the floor surface becomes small, so that the workbench 2 can be moved in all directions with a small pushing force or pulling force.

When the air supply pipe 12 is disconnected from the air intake port 5 or the like for some reason, the check valve 7 prevents backflow of the air in the accumulator 3 so that the air does not leak from the air intake port 5. . Then, the air remaining in the accumulator 3 is gradually ejected from the air cushion mechanism 4. As a result, the air pressure injected from the air cushion mechanisms 4 gradually decreases, and the workbench 2 lands quietly.

In the above embodiment, the workbench 2 has a frame body made of a hollow member to form the accumulator 3. The capacity of the accumulator 3 is not limited to the accumulator 3 regardless of the shape, size and weight. Determined to be large enough to land gently. Further, the workbench 2 has the air cushion mechanisms 4 ... Attached to the lower portion thereof, and the attachment position and quantity of the air cushion mechanisms 4 ... Are not limited. Further, the air inlet 5 and the air outlet 6 ... Attached to the accumulator 3 may be attached at any position and in any quantity. Furthermore, the air cushion mechanism 4 has a function of floating itself from the floor surface F by the air ejected from the bottom, and the structure is free. For example, the central protrusion 24 shown in FIG. 3 may be configured to protrude below the peripheral wall portion 23, and the lower portion of the central protrusion 24 may be in contact with the floor surface F when air is not supplied.

[0014]

As described above, according to the present invention, the frame of the workbench is made of a hollow member to form an accumulator, a check valve is attached to the air intake port of the accumulator, and the air discharge port of the accumulator is connected to the air discharge port. By installing one end of the pipe leading to the cushion mechanism, the air pressure does not drop sharply even if the air supply pipe is disconnected. For this reason, the workbench does not land quickly, so there is no risk of impact on the workbench, objects placed on the workbench, the floor surface, and the like. Further, since the workbench also serves as an accumulator, a different accumulator is not required, the structure is simplified, and space can be saved.

[Brief description of drawings]

FIG. 1 is a perspective view of a floating work device according to the present invention.

FIG. 2 is a piping system diagram of a floating work device according to the present invention.

FIG. 3 is a configuration diagram of an air cushion mechanism according to the present invention.

FIG. 4 is an operation diagram of an air cushion mechanism according to the present invention.

FIG. 5 is a perspective view of a conventional floating work device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Floating type working device, 2 ... Workbench, 2a ... Leg part, 2b ...
Beam, 3 ... Accumulator, 4 ... Air cushion mechanism,
5 ... Air intake port, 6 ... Air discharge port, 7 ... Check valve, 11 ...
Air source (air compressor), 12 ... Air supply pipe, 1
6 ... Piping.

Front page continuation (72) Inventor Jiro Someya 1-10 Shin-Sayama, Sayama City, Saitama Prefecture Honda Engineering Co., Ltd.

Claims (1)

[Claims] 1. A levitation-type working apparatus comprising an air cushion mechanism in which the air is blown from the bottom portion to float above the floor surface, and a workbench having the air cushion mechanism attached to the bottom thereof. A floating work device characterized by forming a hollow member into an accumulator, attaching a check valve to the air inlet of this accumulator, and attaching one end of a pipe leading to the air cushion mechanism to the air outlet of the accumulator. .