JPH0530338U - Vacuum adsorption pad - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a vacuum suction pad that simplifies the operation when connecting a plurality of vacuum suction pads to one vacuum suction device and facilitates replacement of the elastic sealing material. [Structure] An automatic switching valve 14 that switches when it is applied to the wall surface 31 is attached to the adsorption pad main body 11 and connected to a vacuum suction device, so that the vacuum adsorption pad applied to the wall surface 31 does not require any special operation. Allow vacuum suction from only 10. Further, a groove 12 having a trapezoidal transverse cross-section is formed at the tip of the suction pad body 11, and a sponge pad 13 is attached to the suction pad body 11. The sponge pad 13 can be fixed by using elastic force without using an adhesive, and can be easily replaced. ..

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to the improvement of the vacuum suction pad, which simplifies the operation when a plurality of vacuum suction pads are connected to one vacuum suction device and facilitates the replacement of the elastic seal material. It is suitable for use as an anti-sway for gondola etc. that is suspended along the work surface.

[0002]

[Prior Art]

 Workers work safely and efficiently in high-altitude work such as cleaning and maintenance of large-scale wall surfaces of structures such as middle- and high-rise buildings, large tanks, ships, and power plants, as well as lifting and lowering work. Work machines such as unmanned gondolas equipped with work equipment such as manned gondolas and work robots used by people are used.For example, when the wall surface of a building is used as a work surface, it is installed on the rooftop, etc. The hoisting device in the roof car and the hoisting device mounted in the cage raises and lowers the cage that is hung via wires, and ascends and descends to a predetermined work surface.

In such a working machine using a manned type or unmanned type cage, the hoisting device is suspended through the wire regardless of whether the hoisting device is mounted in the cage or separately mounted on the roof car or the like. Often, the cage sways as the work progresses or sways due to wind pressure.

For this reason, conventionally, there has been one that uses a vacuum suction pad as a cage shake prevention device. For example, arms are provided on both sides of the cage, and the vacuum suction pads are attached to the tips of these arms, and the respective vacuum suction pads are attached. And the vacuum pump mounted in the cage should be connected by piping. When working with the cage, the vacuum pump is operated to press the inside of the vacuum suction pad against the work surface so that the inside of the vacuum suction pad can be vacuum-sucked, the inside is evacuated and vacuum-sucked, and the cage is fixed.

[0005]

[Problems to be solved by the device]

 In a cage shake prevention device that uses such a vacuum suction pad, the suction force required to prevent shake is determined by the degree of vacuum reached by a vacuum pump, etc. and the suction area exhaust flow rate. Since leakage occurs at the tip contact part of the pad, it is necessary to secure an exhaust flow rate that takes the amount of leakage into consideration and to increase the cross-sectional area of the pipe that connects the vacuum suction pad and the vacuum pump.

However, if the cross-sectional area of the pipe is increased and two vacuum suction pads are connected to one vacuum pump and used, one vacuum suction pad comes into contact with the work surface and the other vacuum suction pad is sucked. When the suction pad does not come into contact with the work surface, there is a problem that the vacuum suction is performed only from the side of the vacuum suction pad that is not in contact with the work surface having a small suction resistance, and the cage cannot be rocked by vacuum suction.

Therefore, a valve may be provided in the middle of the pipe connecting the vacuum pump and the vacuum suction pad, and the valve on the vacuum suction pad side that is not in contact with the work surface may be closed. There is a problem that the number of operations required to prevent the rocking of the robot increases.

Further, in order to reduce leakage from the vacuum suction pad, an elastic sealing material has been conventionally adhered to the tip of the vacuum suction pad, but the cage is pushed or pulled apart every time the cage is moved. However, it is troublesome to replace the elastic sealant after peeling off the elastic sealant, removing the remaining adhesive, and adhering a new elastic sealant.

The present invention has been made in view of the above problems of the prior art. A vacuum suction pad that can easily suction without requiring a special operation and can easily replace an elastic sealing material is provided. It is the one we are trying to provide.

[0010]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the vacuum suction pad of the present invention is a vacuum suction pad in which the inside of the suction pad body applied to the suction surface is vacuum-sucked by a vacuum suction device to suck the suction pad body. An automatic switching valve that communicates with the vacuum suction device and vacuum-suctions the inside when it is applied to a surface is provided, and the tip of the suction pad body facing the suction surface has a cross-sectional shape with the suction surface side opening. The suction pad main body side has a trapezoidal groove wider than this opening, and an elastic sealing material that is elastically attached and fixed is installed in the annular groove.

[0011]

[Action]

 According to this vacuum suction pad, the suction pad body is equipped with an automatic switching valve that switches when it hits the surface to be sucked, and is connected to the vacuum suction device. Vacuum suction is performed only from the vacuum suction pad that is applied to the suction surface so that vacuum suction does not become difficult. In addition, a groove with a trapezoidal cross-section is formed at the tip of the suction pad body to attach an elastic sealant, which can be fixed by using elastic force without using an adhesive and can be easily replaced. I am able to

[0012]

【Example】

 An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 relate to an embodiment of a vacuum suction pad of the present invention, FIG. 1 is a longitudinal sectional view, FIG. 2 is a rear view, and FIG. 3 is an operation explanatory view. This vacuum suction pad 10 is provided with a cylindrical suction pad body 11 having one end opened, and a groove 12 having a trapezoidal transverse cross section is formed on an annular outer periphery of the opening end, and the opening width of the groove tip is It is narrow and the width of the bottom of the groove is wide. Then, in the groove 12, for example, a sponge pad 13 having a triangular tip portion and a rectangular base end portion in a cross-sectional shape is pushed in as an elastic seal material and fixed by its elastic force. An automatic switching valve 14 is provided at the back of the suction pad main body 11, and the suction pad main body 11 is opened and closed by pressing the suction pad main body 11 against the surface to be sucked or separated.

In this automatic switching valve 14, as shown in FIG. 2, a cylindrical valve box 15 is attached with a screw 16 at a position displaced from the center of the adsorption pad body 11, and a small diameter is attached to the tip of the valve box 15. A spool valve mounting hole 17 is formed, and a communication hole 18 having a large diameter is formed at the base end portion of the valve box 15 so as to communicate with the spool valve mounting hole 17. The spool valve mounting hole 17 has a cylindrical spool valve 20 having a flange 19 formed on the base end side and closed, and is mounted from the communication hole 18 side so as to be slidable. The front end of the spool valve 20 projects forward from the sponge pad 13 with the collar 19 of 20 abutting against the end face of the spool valve mounting hole 18.

A plurality of holes 21 are formed on the side wall of the base end portion of the spool valve 20 so as to communicate with the hollow portion, and these holes 21 are located inside the spool valve mounting hole 17 so that The state in which 19 is in close contact with the end surface of the spool valve mounting hole 17, and the state in which the flange 19 of the spool valve 20 is separated from the end surface of the spool valve mounting hole 17 and the hole 21 is located in the communication hole 18 having a larger diameter than the spool valve 20. The opening and closing of the spool valve 20 is performed by and. Further, a plurality of suction holes 22 are formed on the side wall of the tip end portion of the spool valve 20, and a filter 23 such as a wire mesh is attached to the base end side thereof.

In the communication hole 18, a compression spring 24 that is pressed against the flange 19 of the spool valve 20 and urges it to push forward is attached and is pressed by a lid 26 fixed with a screw 25. Then, a hose connecting fitting 27 is attached to the lid 26 so as to communicate with the inside of the communication hole 18, and is connected to a vacuum suction device (not shown) via a hose 28.

The vacuum suction pad 10 configured as described above is used by being supported by the tip of an arm mechanism 30 operated by, for example, a handle 29, and suction on a wall surface 31 is performed as follows. Be seen. The hose 28 connected to the hose connecting fitting 27 of the vacuum suction pad 10 is connected to a vacuum suction device such as a vacuum pump, and the vacuum suction device is put into operation.

In this state, as shown in FIG. 1 and FIG. 3A, the spool valve 20 of the automatic switching valve 14 is pushed forward by the compression spring 24, and the collar 19 of the spool valve 20 scrolls. The automatic switching valve 14 is in a closed state in close contact with the end surface of the valve mounting hole 17.

After that, when the vacuum suction pad 10 is pressed against the wall surface 31 by the arm mechanism 30, as shown in FIG. 3B, the tip of the spool valve 20 of the automatic switching valve 14 hits the wall surface 31 and is compressed. Since the spool valve 20 is pushed back against the spring 24, the flange 19 of the spool valve 20 separates from the end surface of the spool valve mounting hole 17, and the hole 21 is located in the communication hole 18 for vacuum suction. Communicated with the device.

As a result, the air in the suction pad body 11 is sucked through the filter 23 from the suction hole 22 at the tip of the spool valve 20 in the suction pad body 11, passes through the spool valve 20, the hole 21, and the communication hole 18. The vacuum suction device 10 sucks the vacuum suction pad 10 to the wall surface 31.

At the time of suction of the vacuum suction pad 10, even if the plurality of vacuum suction pads 10 are connected to one vacuum suction device, if the suction pad body 11 is separated from the wall surface, Since the spool valve 20 is in close contact with the end surface of the spool valve mounting hole 17 and the automatic switching valve 14 is in a closed state, only the vacuum suction pad 10 in close contact with the wall surface 31 is vacuum-sucked, No special operation is required, and vacuum suction does not become difficult.

When the sponge pad 13 of the vacuum suction pad 10 is worn, the sponge pad 13 can be replaced by pulling out the sponge pad 13 from the groove 12 of the suction pad body 11 and then pushing a new sponge pad 13 into the groove 13. The sponge pad 13 can be fixed by the shape of the groove 12 without using an adhesive, so that it can be replaced in a short time.

Next, the case where the vacuum suction pad 10 is applied to the rocking prevention of the cage for wall surface work will be described with reference to FIG. 4 showing a plan view and FIG. 5 showing a side view. The cage 32 is equipped with the vacuum suction pads 10 on the left and right sides via the arm mechanism 30, and one vacuum pump 33 mounted in the cage 32 and each vacuum suction pad 10 are connected to the hose. It is connected by 28. Two hoisting machines 34 for moving up and down along the wall surface 31 are mounted in the cage 32, and are suspended by two wire ropes 35.

The vacuum suction pad 10 is used to prevent the cage 32 from swinging, but in this case also, the vacuum suction pad 10 is applied to the wall surface by the arm mechanism 30 without any special operation. The vacuum suction is performed from one side, and even when the two cannot be applied to the wall surface 31 at the same time, the vacuum suction can be reliably performed without difficulty, and the cage 32 can be easily rocked. In addition, in the above-mentioned embodiment, the case was applied to the cage for wall work, but the present invention is not limited to this, and when vacuum suction is performed to prevent shaking, for example, it may be lifted and lowered by a wire or the like. It can be widely applied to work machines that use a combination of vertical movement and horizontal movement.

Furthermore, the configuration of the arm mechanism, such as the number of arms and the degree of freedom, can be freely selected. Further, each constituent element may be modified within the scope of the invention.

[0025]

[Effect of the device]

 According to the vacuum suction pad of the present invention, as described in detail with one embodiment, the suction pad body is equipped with an automatic switching valve that switches when the suction pad body is brought into contact with the suction surface, and is connected to the vacuum suction device. By doing so, by simply applying the vacuum suction pad to the surface to be attracted, vacuum suction can be performed without requiring special operations, and even if multiple vacuum suction pads are connected to one vacuum suction device. Vacuum suction can be performed only from the vacuum suction pad applied to the surface to be attracted, and vacuum suction does not become difficult. In addition, since a groove with a trapezoidal cross-section is formed at the tip of the suction pad body to attach an elastic sealant, it can be fixed by using elastic force without using an adhesive, and can be easily replaced. can do. Therefore, it is suitable as an anti-sway for work machines that are hung with wire ropes such as cages of gondola for working in high places.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of a vacuum suction pad according to the present invention.

FIG. 2 is a rear view of an embodiment of the vacuum suction pad of the present invention.

FIG. 3 is an operation explanatory view of an embodiment of the vacuum suction pad of the present invention.

FIG. 4 is a plan view in which the vacuum suction pad of the present invention is applied to a cage to prevent it from shaking.

FIG. 5 is a side view in which the vacuum suction pad of the present invention is applied to a cage swing stop.

[Explanation of symbols]

 10 Vacuum adsorption pad 11 Adsorption pad main body 12 Groove 13 Sponge pad (elastic sealing material) 14 Automatic switching valve 15 Valve box 17 Spool valve mounting hole 18 Communication hole 19 Spit 20 Spool valve 21 Hole 22 Suction hole 24 Compression spring 26 Lid 27 Hose Connection fitting 28 Hose 30 Arm mechanism 31 Wall surface (adsorbed surface) 32 Cage 33 Vacuum pump 34 Hoisting machine

Claims (1)

[Scope of utility model registration request] 1. A vacuum suction pad that vacuum-sucks and sucks the inside of a suction pad body applied to a suction surface by a vacuum suction device, wherein the vacuum suction device is applied to the suction pad body on the suction surface. An automatic switching valve that communicates with the inside and vacuum-sucks the inside is provided, and the trapezoid whose cross-sectional shape is open on the suction surface side and wider on the suction pad body side than the opening at the tip facing the suction surface of this suction pad body. The vacuum suction pad is characterized in that a groove is formed, and an elastic sealing material is mounted and fixed by an elastic force in the annular groove.