JPS6379622A - Apparatus for sucking building window cleaner to wall surface - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Object of the Invention (a) Industrial Application Field The present invention relates to a wall suction device for a building window cleaning machine, and particularly relates to a computer-controlled pill window cleaning machine suspended from a rooftop hoist. can be easily and securely fixed to the wall as needed,
It is an object of the present invention to provide a highly safe and accurate seed adsorption device that can immediately release its adsorption action when being moved.

(b) Prior Art We have proposed a disassembly and transport type building window cleaning machine controlled by a microcomputer and a hoist for use therein.

When cleaning windows, these conventional cleaning machines either move up and down on rails pre-installed on the wall and are fixed to the wall to clean the windows, or they are equipped with a jet, jet or i-pull device. It is customary to attach a vacuum cleaner to the wall of a building and clean it by suction or pressure on the wall of the building, and the method disclosed in the above-mentioned published patent by the present inventors also uses a thrust-suction type fan to attach the cleaning machine to the wall of a building. It was stuck.

(C) Points to be solved by the invention The above-mentioned conventional cleaning machine first of all attaches a rail to the wall of a building in advance,
A gondola or cleaning machine is designed to move up and down on this rail surface and is fixed to clean the window, but this means is dedicated to a specific pill and has the drawback of not being versatile.

In addition, the conventional cleaning machine for the pond is configured to create negative pressure air for suction using pumps in several places, and connect them with pipes to suction at several places, so all suction cups can be used reliably. There is a drawback that a predetermined pressure cannot be obtained unless suction is started after being set at a predetermined position.

In addition, the device disclosed in the above-mentioned published patent by the present inventors had disadvantages in that it was somewhat difficult to approach the surface and the suction force was somewhat weak.

(2) Structure of the Invention (a) Means for Solving Problems The present invention improves the drawbacks of the suction means of conventional building window cleaners, and has a large suction force that firmly attaches to building walls. This provides a means for adsorbing these types of seeds that stick to the surface.

That is, the suction device of the present invention includes a screw pump, a servo motor-driven suction cup slide mechanism interlocked with the screw pump, and a propulsion fan device, and each of these suction means is attached to, for example, the four corners of the cleaning machine frame. It has a structure in which it is firmly attached to the wall surface through the interlocking of these various mechanisms, which act as follows.

(b) Function Each suction means of the present invention is activated by the control device of the cleaning machine when the building window cleaning machine, which is lowered by the rope, reaches a predetermined cleaning window part. According to instructions from a microcomputer built in, the screw pump is operated to generate wall suction force, and then the servo motor is started and acts on the screw rod and nut connected thereto,
Slide the suction cup against the wall surface, use the screw pump that continues to pump out air to strongly adsorb it to the wall surface, and then reverse the servo motor to suction the entire cleaning machine including this suction means to the wall surface. and sticks.

If the suction cup that has been slid to the wall cannot reach the wall surface, a large auxiliary fan is operated by the action of the rod attached to the suction cup to propel the cleaning machine even more powerfully toward the wall surface, and the screw pump It works in conjunction with the adsorption action of , making it strongly adsorbed to the wall surface.

On the other hand, in the case of releasing the suction, air is drawn in from around the suction cup by stopping the screw pump, and the adhesion of the wall surface is immediately released.

(c) Example book: Interlayer building window cleaning machine (above) was released to the public in 1986-1.
No. 72527, and as shown in Figure 1, the roof of the building (
The control device housing (5) is suspended by a rope (3) from a hoist (2) wheeled over the handrail (T) and the
), the cleaning head (
8) is an automatically controlled cleaning device that cleans according to the following.

Furthermore, this cleaning machine (i) has each frame (4) (4') and (
6) is disassembled and the main parts of the pond, such as the housing (
5) It is designed so that it can be disassembled into turntables (A), etc. and transported (same as the hoist) to clean the windows of Ike's building, and although it is not specified, its power is wired from a designated building power source. Electricity is supplied to each device via the housing (L), and the window cleaning liquid is supplied to the housing (5), which is installed in a cassette type.
) or via a tank pipe (9). However, in consideration of gravity and the amount used, it is preferable to collect only the recovered liquid through a pipe (9') into a cassette type tank (C) on the lower horizontal frame (4') as shown.

Conventionally, in building window cleaning machines like this, after the window to be cleaned has been determined, it is suspended from a hoist and a sensor (1 not shown) is attached near the cleaning head (8).
Determine the suction and fixing position according to 1. The cleaning machine frame (4) (4") is fixed on the building wall surface (W) by suction or propulsion means provided at the four corners of the frame, and the cleaning head (8) S is successively moved according to the cleaning program. Configured to operate and clean.

The present invention, as described below, is a building window cleaning machine (±
) has been improved so that it can be firmly and easily adsorbed onto the wall of a desired building.

Normally, for this type of cleaning, the building window cleaning machine (top), which is suspended from a hoist, is separated by a distance (Ω) so as not to damage the building wall (W), as shown in Figure 2. its fixed position can be determined by

After this position is determined by a sensor etc., the adsorption device (
The motor (11) of 10) is driven and the bearing (15)
A pair of screw pumps (12) (12') are driven through a shaft (14) (14°) supported on (15'') and spur gears (13) (13'). 1
2) (12') are interlocked with each other as shown in Figure 3, and the spaces (α1) and (α2) between them and the cylinder (16'), which has a gourd-shaped cross section, are spiral-shaped as shown in Figure 4. Since each cylinder is twisted and rotated once, each of them forms a closed space and moves in the direction of the arrow (m) to evacuate the air, thereby performing an extremely powerful pumping action.

At the same time as this pump action, the servo motor (
20) to rotate the threaded rod (21) directly connected to this, and the nut part (22) on the suction 11i (19) that is screwed to the nut part (22) is connected to the alternate layer (1) as shown by the dotted line. ')only,
Slide inside the screw pump outer plate (18) and attach it to the wall (W).
contact with. Of course, during this time, the screw pump (12) (1
2') continues to rotate, it continues to remove air between the suction cup (19) and the wall (W), lowering the atmospheric pressure and exerting a strong suction effect.

If such a strong suction effect is obtained, the rotation of the servo motor (20) will be switched in the opposite direction, the threaded rod (21) itself will enter the nut (22), and at the same time, the servo motor (20) will be rotated in the opposite direction. Each adsorption device (10
) That is, the entire cleaning machine (upper part) is drawn to the wall surface and cleaning of the glass surface according to the program is started.

- When the suction cup (19) pulls the cleaning machine ('work) like a force ratio, the rod (23) attached to the suction cup (19)
) also move together and remove the limit switches (24) and (2).
5) senses each position and drives the servo motor (20
) to stop.

During this time, the limit switch (26) detects contact with the wall (W), and the limit switch (27) detects the adsorption f.
A decrease in pressure is sensed by a negative pressure-induced bulge mechanism, which is constructed of a thin film (28) made of rubber or the like on a part of f1 (19).

On the other hand, if the distance XICQ') between the wall surface (W) and the suction cup (19) is too large and exceeds the sliding limit of the suction cup (19), the claw (29) at the tip of the rod (23) moves The end claw (31) of the fan (30) is pulled, and the annular groove (35) of the cavity (34) of the fan (33) is fitted so that the roller (32) can rotate accordingly. Department (
34) and the friction plate (4O)j- are crimped, so the pulley (36) attached to the shaft (14) of the motor (11)
) and the belt (37) that connects the pulley (38) on the shaft (39) generates a thrust pushing the motor (11),
With this, the suction cup (19) and the wall surface (W) are brought into contact and fixed.

During work, since the motor (11) continues to rotate, the screw pump (12) (12') covers air leakage from the joint and maintains suction power.

When it is necessary to remove the suction cup (19) upon completion of work,
Stop the motor (11) and turn off the screw pump (12) (12).
'): Release the heavy suction and attach the suction cup (19) to the wall (W).
), the pump outer plate (16), the slide part (17) at the base of the suction cup (19), and the protective cover (18), air flows in and immediately connects the suction ff1 (19) with the wall < Since the pressure between W> becomes equal to atmospheric pressure, the suction effect disappears and the cleaning machine (soil) separates from the work surface.

Also, before the suction ff1 (19) is fully extended, the wall surface (W
), the servo motor (20) immediately reverses to pull the suction cup (19) and stops the servo motor (20) at a predetermined position. However, the screw pump (
12) (12') continues to operate throughout the cleaning period, firmly fixing the cleaning machine (-) to the wall surface (W), and as soon as the work is completed, the motor (11) stops and the suction cup is removed as described above. (19) Release the wall fixation.

It is expressed as follows.

By regulating the ON and OFF operations of the screw pump motor (11) and servo motor (20) in this manner, the cleaning machine (IJ) can be automatically fixed to the wall surface (W) and detached. , strong suction power and agile operation make it possible to perform work safely, accurately, and quickly.

(Appended Table) Servomotor Operation Status Explanation Table (d) Effects of the Invention Due to the above configuration, the suction device of the present invention has the following effects.

(1) Strong adsorption to the wall due to the cooperative action of the screw pump and fan.

(2) Since the suction cup automatically slides and approaches the wall surface, suction is safe, accurate, and quick.

(3) It approaches smoothly and absorbs gradually, so it does not damage the wall surface.

(4) Easy to release the adsorption.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the working state of the building window cleaning machine and hoist of the present invention. FIG. 2 is a cutaway front view showing the wall suction device of the building window cleaning machine of the present invention. The third figure is a sectional view taken along the line ■-■ in the second figure. FIG. 4 is a partial front view showing the engaged state of the screw pump shown in FIGS. 2 and 3. FIG. In the figure, (top) is a building window cleaning machine, (10) is a suction device, (
11) is a motor, (12) (12') is a screw pump,
(19) is a suction cup, (20) is a servo motor, (21
) is a threaded rod, (22) is a nut, (24) (25)
(26) (27) is a limit switch, (30) is a rod, (31) is an end wind, (32) is a roller, (33
) is a fan, (34) is a fan cavity, (40) is a friction plate, and (43) is a chassis.

Claims (1)

[Claims] Each of these consists of a combination of a hoist that is controlled by a microcomputer and can be disassembled and transported, and a building window cleaning machine, and the wall suction device of the building window cleaning machine is linked to a screw pump equipped with a slideable suction cup. A wall adsorption device for a building window cleaning machine, characterized in that it is configured by a large auxiliary fan that provides a vacuum cleaner.