JPH09266869A - Building wall surface cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building wall surface cleaning device which enhances the operability for projecting and storing a cage and can prevent cage collision accidents caused by operating errors. SOLUTION: A rope 7 from which a cage 5 hangs down is folded back at a movable sheave 12 which moves back and forth integrally with a first-step arm 3, and then leads to the rope winding drum 6a of a winch 6. When the first-step arm 3 is moved longitudinally by a predetermined distance, a second- step arm 4 is moved longitudinally by twice the distance, while the length of the rope 7 from the front end of the second-step arm 4 to the rope winding drum 6a is held constant. As a result, the cage 5 can be moved horizontally without operation of the winch 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building wall cleaning device used for cleaning windows of buildings, and more particularly to an arm retractable cleaning device.

In this specification, with respect to the front and rear, the direction in which the cage is extended is referred to as the front, and the direction in which the cage is stored is referred to as the rear.

[0003]

2. Description of the Related Art Conventionally, as an arm telescopic cleaning device for a building wall, as shown in FIG. 3, a gondola main body (1) running along an edge of a rooftop (20) of the building and a gondola main body (1). )
The first stage arm (3), which is mounted on the
A second stage arm (4) which is configured to move back and forth by a double movement amount with the forward and backward movement of the stage arm (3), and is hung from the front end of the second stage arm (4) and wound up. With a cage (5) that can be raised and lowered by the machine (6),
The rope (7) that suspends the rope goes through the sheave (31) fixed to the gondola body (1) and then the rope winding drum of the hoist (6).
Those that have reached (6a) are known.

According to the conventional building wall cleaning device,
When both arms (3) and (4) are moved forward, the cage (5) is raised, and when both arms (3) and (4) are moved backward, the cage (5) is lowered. Therefore, in order to store the cage (5) from the extended state of the cage (5) shown by the chain line in FIG.
When the car is retracted, the cage (5) will descend and collide with the parapet (20a) on the rooftop (20). Cage (5)
Is raised in advance to the upper limit position where it hits the limit switch (18), but even in this case, a sufficient gap is not secured between the lower end of the cage (5) and the upper surface of the parapet (20a). Therefore, in order to avoid a collision,
(3) Do not retract (4) at once, stop both arms (3) and (4) once before the cage (5) collides with the parapet (20a), and then operate the hoisting machine (6). It is necessary to wind the rope (7) with the rope (7) and always make a gap between the lower end of the cage (5) and the upper surface of the parapet (20a) to retract both arms (3) (4). Met. Both arms
The same applies when moving (3) and (4) forward, and both arms (3) and (4)
Work to raise the cage (5) to the upper limit position where it hits the limit switch (18), and the hoist (6) is operated to reel out the rope (7) to parapet the cage (5).
It was necessary to repeat the work of lowering it so that it did not hit (20a).

[0005]

As is apparent from the above description, in the conventional building wall cleaning device, the front and rear movement of the arm and the winding and unwinding of the rope by the hoisting machine are repeated when the cage is extended and retracted. Not only is it troublesome, but there is also the problem that a cage collision may occur due to an operation error.

An object of the present invention is to provide a cleaning device for a building wall surface, which can improve the workability when the cage is extended and stowed and can prevent a collision accident of the cage due to an operation error.

[0007]

A cleaning device for a building wall surface according to the present invention comprises a gondola main body running along an edge of a roof of a building, a first stage arm provided on the gondola main body so as to be movable back and forth. A second stage arm that is moved back and forth with a double movement amount as the first stage arm moves back and forth; and a cage that is hung from the front end of the second stage arm and is raised and lowered by a hoist. In the building wall cleaning device equipped with, the rope that suspends the cage is
It is characterized in that after it is folded back by the movable sheave that moves back and forth integrally with the first stage arm, it reaches the rope winding drum of the hoisting machine.

According to the building wall cleaning device of the present invention,
When the first-stage arm is moved back and forth by a predetermined distance, the second-stage arm moves back and forth twice as much, but the rope that suspends the cage is a movable sheave that moves forward and backward together with the first-stage arm. Since it is folded back, the length of the rope from the front end of the second stage arm to the rope winding drum is
Be kept constant. As a result, the cage can be moved horizontally without operating the hoist.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show a building wall cleaning device according to the present invention, which comprises a gondola main body (1) running left and right along an edge of a rooftop (20) of the building, and a gondola. A rectangular parallelepiped frame (2) fixed to the upper part of the main body (1) and extending forward and backward, a first stage arm (3) of a rectangular tube shape provided in the frame (2) so as to be movable back and forth, and a first It is arranged in the step arm (3) and the first step arm (3) moves forward and backward.
A second stage arm designed to move back and forth with double the amount of movement
(4), a cage (5) suspended from the front end of the second stage arm (4) by a rope (7) such as a wire rope, and a rope winding drum provided at the rear of the gondola body (1). Winding machine (6) having (6a) and screw shaft mounted on frame (2) and for moving first stage arm (3) back and forth
(8) and a chain device (9) for moving the second stage arm back and forth provided on the first stage arm (3).

FIGS. 1 and 2 show the cage (5) overhang and
This shows the state during storage, and the cage (5) has been raised to the upper limit position where it hits the limit switch (18).

At the rear end of the first stage arm (3), there is a rear protrusion.
(3a) is provided, and a movable sheave (12) having a vertically extending shaft (12a) and moving back and forth integrally with the first stage arm (3) is attached to the rear protrusion (3a). . Cage (5)
The rope (7) that has been suspended is wound around the sheave (13) provided at the front end of the second stage arm (4), then pulled straight back and folded back by the movable sheave (12). In addition, the left and right shafts (1
It is wound around a fixed sheave (11) having 1a) and reaches the rope winding drum (6a) of the hoisting machine (6). An intermediate fixed sheave (10) is further provided between the fixed sheave (11) and the rope winding drum (6a).

The chain device (9) comprises a sprocket (14) provided at both front and rear ends of the first stage arm (3), a chain (15) wound around them, and a front end of the frame (2). Fixed bracket (1) fixed to guide the chain (15)
6) and the chain at the rear end of the second arm (4).
It consists of a movable bracket (17) that moves back and forth integrally with (15). When the first-stage arm (3) moves back and forth by a distance L, the chain (15) moves along with the movement of the first-stage arm (3).
The second stage arm (4) is moved back and forth by a distance L with respect to the first stage arm (3) by rotating by an amount corresponding to the forward and backward movement distance of.

In FIG. 2, when the first stage arm (3) is retracted by a predetermined distance L from the state shown by the chain line to the state shown by the solid line, the second stage arm (4) is retracted 2L. In the conventional device, if the rope (7) is not wound up by the amount of 2 L, the cage will be lowered, but according to the device of the present invention, the required winding length is the rope (7). Since the turn-back sheave (12) is offset by L * 2 due to the L retreating, the length of the rope (7) is kept constant. Therefore, the cage (5) can be moved horizontally as shown in FIG. 1 without operating the hoisting machine (6), and the cage (5) can be moved to the rooftop during the operation of extending and retracting the cage (5). It does not collide with the parapet (20a) of (20).

The fixed sheaves (10) (11) arranged between the movable sheave (12) and the rope winding drum (6a).
Is not limited to the above embodiment,
If the rope (7) is to be folded back by the movable sheave (12), the installation position and number of fixed sheaves can be variously changed. Further, in the above embodiment, the arms (3) and (4) have only two stages, but a third stage arm is provided on the second stage arm (4) so as to be movable back and forth, and a fourth stage arm is provided at the third stage. It is also possible to provide a movable sheave for folding back the rope on the third stage arm so as to move back and forth with a movement amount that is twice as much as the arm moves back and forth.

[0016]

According to the building wall surface cleaning apparatus of the present invention, the cage can be moved horizontally without operating the hoisting machine, so that the workability at the time of extension and storage of the cage can be improved and the operation can be performed. It is also possible to prevent a cage collision due to a mistake.

[Brief description of drawings]

FIG. 1 is a side view showing a building wall cleaning device according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view showing a conventional building wall cleaning device.

[Explanation of symbols]

 (1) Gondola body (3) First stage arm (4) Second stage arm (5) Cage (6) Hoisting machine (6a) Rope winding drum (7) Cage hanging rope (12) Movable sheave

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeyuki Kuroda 1-6-2 Nishimiyahara, Yodogawa-ku, Osaka-shi, Osaka Sansei Corporation

Claims (1)

[Claims] 1. A gondola body (1) running along an edge of a rooftop (20) of a building, a first stage arm (3) provided on the gondola body (1) so as to be movable back and forth, and a first A second stage arm (4) which is configured to move back and forth by a double movement amount with the forward and backward movement of the stage arm (3), and is hung from the front end of the second stage arm (4) and wound up. In a building wall cleaning device equipped with a cage (5) that can be raised and lowered by a machine (6), a rope (7) that suspends the cage (5) moves back and forth together with the first stage arm (3). A device for cleaning a building wall surface, which is folded back by the movable sheave (12) and then reaches the rope winding drum (6a) of the hoist (6).