JPH0459193B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a wall surface traveling device used, for example, when cleaning walls of medium to high-rise buildings.

(Prior Art and its Problems) Wall cleaning and window cleaning work of mid-to-high-rise buildings is carried out by cleaning workers riding in gondolas that are lifted and lowered by winches and the like from the roofs of buildings.

However, since such gondolas are suspended by ropes, they tend to sway regardless of whether they are going up or down or stopped, and even when workers are cleaning windows or moving inside the gondola. There is a problem that workability is poor because of the shaking.

In addition, in high-rise buildings, even on days when the wind is not so strong, there is a risk that the gondola will sway around the building due to the unique wind that occurs around the building. It is required to secure.

An object of the present invention is to provide a wall traveling device that can clean walls of buildings, etc. while ensuring good workability and sufficient safety.

(Means for Solving the Problems) This invention provides an endless chain extending in the vertical direction along the side of the main body of a gondola, etc., which is held freely up and down along the wall of a building etc. by a winch. The rods are movably directed through guide rails that form a circular orbit, and the rods are connected to each link of this chain in a radial direction via springs so that they can expand and contract freely, and a suction cup is attached to the tip of each rod. Each suction cup is connected to annular piping arranged in parallel so that the chain can follow freely, and a valve is provided between each suction cup and the annular piping to open and close according to the movement of the chain, and the annular piping is linked to a predetermined part of the chain. A rotary joint attached to the rotary joint, a rotary joint that can freely reciprocate along the slide rail on the central long axis of the elliptical track, and an arm that connects these rotary joints and can freely bend at the intermediate part. Connect to vacuum pump via.

(Function) Therefore, when the vacuum pump is activated, the suction pressure of the suction cup attached to the chain via the rod is supplied via the valve to the suction cup located on the wall side of the building, etc. is adsorbed to.
In addition, when the winch is driven to raise and lower the main body from this state, each suction cup moves with the chain along the trajectory of the guide rail, and the suction cups on the wall side are constantly attracted by the valves that open and close as a result of this movement. kept in condition.

As a result, the main body is reliably held by the suction cup that sticks to the wall surface of a building, etc., regardless of whether it is stopped or going up or down.

On the other hand, each suction cup is connected via an annular pipe installed in parallel with the chain, a rotary joint attached to a predetermined link of the chain, an arm that can bend freely in the middle, and a rotary joint that can freely move on the slide rail. It is connected to a vacuum pump, so as the chain moves, the annular pipe moves in parallel.
As a result, the arm that connects both rotary joints moves while bending, and at this time, the rotary joint on the vacuum pump side moves back and forth along the slide rail, which may cause the piping system to twist when the chain moves. Entanglement is prevented.

(Example) Figures 1 to 6 show examples of the present invention, in which 1 is a roof car that can move on a rail 3 laid on the roof of a building 2, and 4 is a winch installed on the roof car 1 ( The main body of the gondola is held freely up and down via a wire rope 5 (not shown).

Guide rails 7 are disposed on both sides of the gondola main body 4 via brackets 6, respectively.
An endless chain 8 is attached to the guide rail 7.

The guide rail 7 consists of four rectangular rails having a straight part and a curved part arranged symmetrically on the inside and outside along the side of the gondola body 4. It is provided so as to form a predetermined elliptical orbit in the ascending and descending direction of the gondola main body 4.

Guide rollers 12 attached to both sides of the connecting pins 11 of each link 10 engage the guide rail 7, and the chain 8 is supported so as to be freely movable along the guide rail 7 on its oval track.

A rod 13 is attached to the center of each link 10 so as to be freely slidable in the radial direction, and a suction cup 14 is attached to the tip of each rod 13.

A spring 15 is fitted between the chain 8 and the suction cup 14 to urge the suction cup 14 outward, and a cam rail 16 disposed on the inner circumferential side of the guide rail 7 is fitted at the rear of the rod 13. An engaging roller shaft 17 is attached.

The cam rail 16 has a lift part 18 formed at each corner on the side of the building wall 9, and when the roller shaft 17 rides on the lift part 18, the suction cup 14 is pulled up together with the corresponding rod 13.

The suction cup 14 includes a circular base plate 19 that is pin-coupled to the rod 13, a collar 20 formed by fixing an elastic body such as a closed cell sponge to the outer periphery of the base plate 19 on the suction side, and a collar 20. and a suction port 21 that opens into a space surrounded by a nest 22 that sets the space to a predetermined volume.
is housed in the suction port 21, and a diaphragm 23 and a filter 24 are interposed in the suction port 21.

Therefore, when the air in the space is sucked through the suction port 21 while the suction cup 14 is in contact with the building wall 9, etc., the pressure in the space is immediately reduced due to the provision of the nest 22, and suction is performed. It will be done. Furthermore, if the suction condition is poor and the pressure inside the space leaks, the amount of suction air is limited by the throttle 23 interposed in the suction port 21, so that the suction of other suction cups 14 is not affected. .

A pipe (hose) 25 is connected to the suction port 21 of each suction cup 14, and each pipe 25 is connected to an annular pipe (hose) 26 disposed along the cam rail 16. A valve 27 is interposed between each of them.

The valve 27 is of a push type and is connected to the chain 8.
An opening/closing lever 28 provided on the valve 27 is engaged with a valve cam rail 29 disposed between the guide rail 7 and the cam rail 16.

The valve cam rail 29 has a lift part 30 formed continuously between both lift parts 18 of the cam rail 16, and as shown in FIG. 7, when the lever 28 rides on the lift part 30, the valve 27 is opened. There is.

On the other hand, the annular pipe 26 is connected to a rotary joint 32 attached to a specific link 31 of the chain 8, and is connected to the slider block via an arm 34 made of a metal pipe with a rotary joint 33 interposed in the middle. It is connected to a rotary joint 36 attached to 35. In this case, the rotary joints 32 and 36 may be connected by piping provided separately from the arm 34.

The arm 34 has rotary joints 32, 33,
36, the slider block 35 is supported so that it can freely reciprocate on a slide rail 37 formed on the central long axis of the elliptical orbit of the guide rail 7.

A vacuum pump 39 is connected to the rotary joint 36 via a pipe (hose) 38.

Therefore, when the chain 8 moves on the guide rail 7, the pipe 25 and the annular pipe 26 move in the same way as the chain 8, and the arm 34 connected to the rotary joint 32 of the link 31 moves while being bent. Since the slider block 35 moves on the slide rail 37 in accordance with this, each piping is not twisted or tangled.

With this configuration, when the gondola main body 4 is suspended by the winch as shown in FIGS. 4 and 5 (for example, in a stopped state), the cam rail 16
A suction cup 14 located inside both lift parts 18 contacts the building wall surface 9, and a valve 27 of a pipe 25 connected to this suction cup 14 is opened by a valve cam rail 29.

Therefore, when the vacuum pump 39 is operated, the suction pressure is applied to the pipe 38, the arm 34, and the annular pipe 2.
6, supplied to the suction cup 14 via piping 25;
This suction cup 14 sticks to the building wall surface 9.

In this case, since the valves 27 on the other suction cups 14 are closed by the valve cam rail 29, the suction pressure of the vacuum pump 39 is not supplied to these suction cups 14. In addition, each suction cup 14 has a rod 1
3 and a spring 15 so that they can be expanded and contracted independently.
As shown in FIG.
1 or undulation 42, etc., the suction cup 14 expands and contracts accordingly, so that the suction can be ensured. Note that depending on the location of unevenness, etc., the pressure inside the suction cup 14 may be lower than the wall surface 9.
Although leakage may occur between the suction cup 14 and the suction cup 14, the amount of leakage is suppressed to a small amount by the throttle 23 interposed in the suction port 21, so that the suction state of the other suction cups 14 is not affected.

When the gondola main body 4 is raised or lowered by the winch, the chain 8 is changed from the above state as it is raised or lowered.
moves relatively along the guide rail 7 together with each suction cup 14. At this time, as the suction cup 14 on the side away from the building wall surface 9 (the rear side with respect to the up-and-down direction) and the chain 8 move, the corresponding valve 27 When the valve cam rail 29 is removed from the lift portion 30, the suction pressure from the vacuum pump 39 is cut off, and then the roller shaft 17 of the rod 13 is moved from the cam rail 16.
When the vehicle rides on the lift section 18 of the vehicle, it is pulled up.

In addition, the suction cup 14 on the side facing the building wall 9 (the front side with respect to the vertical direction) is attached to the wall 9 when the roller shaft 17 of the corresponding rod 13 passes the lift portion 18 of the cam rail 16 as the chain 8 moves. The valve 27 extends further and the valve cam rail 29
When the lift section 30 is reached, suction pressure from a vacuum pump 39 is supplied.

As a result, the suction cup 14 located on the side of the building wall 9
The gondola main body 4 is raised and lowered by the winch while reliably adhering to the building wall surface 9.

In this case, a lift portion 18 of the cam rail 16 is formed at the corner where the suction cup 14 comes into contact with and leaves the building wall surface 9, and the suction cup 14 is pulled up or extended in a direction perpendicular to the building wall surface 9.
4 is prevented from colliding with the building wall surface 9 or being twisted.

In addition, each suction cup 14 is connected to an annular pipe 26 installed in parallel with the chain 8, a rotary joint 32 attached to a predetermined link 31 of the chain 8, an arm 34 that can be bent at the intermediate portion, and a slide at the center of the guide rail 7. Since the rail 37 is connected to the vacuum pump 39 via the rotary joint 36 that can freely move back and forth, there is no need to worry about the piping system becoming kinked or tangled, resulting in cracks or coming loose. Improved reliability. In addition, if the slide rail 37 is not provided and the rotary joint 36 is fixed at the center position of the guide rail 7, the trajectory in the oval direction of the guide rail 7 is changed in order to improve stability when running on a wall. The longer the arm 34 is, the longer the extended length of the arm 34 becomes, and the locus of movement and bending angle of the intermediate portion 33 also become larger, so such a configuration is not preferred from the viewpoint of durability.

In this way, the gondola main body 4 is reliably held by the suction cup 14 that sticks to the building wall surface 9 regardless of whether it is stopped or going up or down.
This improves the workability of cleaning walls and windows, and it also ensures sufficient safety because it does not shake even when exposed to wind, which is typical of high-rise buildings, or during earthquakes. In addition, since the main body 4 can be held by the suction cup 14 even when going up and down, the main body 4 can be raised and lowered to immediately escape to a safe place in the event of a strong wind.

It goes without saying that this embodiment can be used not only for cleaning work but also as a lifting machine. Alternatively, the chain 8 may be driven by a motor or the like so that it can run on its own.

(Effects of the Invention) As described above, according to the present invention, the main body of a gondola or the like can be held on the wall surface of a building, etc. with a suction cup, and can be raised and lowered while being held with the suction cup, thereby improving workability such as cleaning walls. It is possible to improve safety and ensure high safety. In addition, since each suction cup can be expanded and contracted by a rod and a spring, it can be reliably sucked even if there are irregularities on the wall surface.

In addition, each suction cup and the vacuum pump are connected to an annular pipe arranged in parallel in a chain, a rotary joint attached to a predetermined link, an arm that can be bent at the intermediate part, and a slider rail along the central long axis of the guide rail. Since the connection is made via a freely movable rotary joint, the piping system does not get kinked or tangled, improving reliability.

[Brief explanation of the drawing]

1 and 2 are main part configuration diagrams and sectional views taken along the line A-A showing an embodiment of the present invention, FIG. 3 is a sectional view of the suction cup portion, and FIGS. 4 and 5 are overall views and their Side view,
FIG. 6 is a piping system diagram, FIG. 7 is a valve operating state diagram, and FIGS. 8 to 10 are explanatory diagrams showing adsorption states. 4... Gondola body, 7... Guide rail, 8
...Chain, 10,31...Link, 13...
Rod, 14...Sucker, 15...Spring, 2
5, 38... Piping, 26... Annular piping, 27...
Valve, 32, 36...Rotary joint, 3
4...Arm, 37...Slide rail, 39...
…Vacuum pump.

Claims (1)

[Claims] 1. An endless chain is attached to the side of the main body of a gondola, etc., which is held freely up and down along the wall of a building, etc. by a winch, and is freely movable via a guide rail that forms an elliptical trajectory in the up and down direction along the side of the main body. A rod was connected to each link of this chain in a radial direction via a spring so that it could expand and contract, a suction cup was attached to the tip of each rod, and each suction cup was arranged in parallel so that it could freely follow the chain. A rotary joint, which is connected to the annular pipe and opens and closes according to the movement of the chain, is provided between each suction cup and the annular pipe, and the annular pipe is attached to a predetermined link of the chain; It is characterized by a rotary joint that can freely reciprocate along the central long axis of the slide rail, and an arm that connects these rotary joints and can be bent freely at the intermediate portion, and is connected to a vacuum pump. Wall running device.