JPH10338453A - Travelling handrail cleaning device of passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the reliability of the operation by pulling a cleaning tool apart from a travelling handrail when the cleaning tool is automatically renewed and pressing it against the travelling handrail again upon completion of renewal. SOLUTION: A motor 35 rotates a cam 40, and a pressing base 29 presses a belt-like cleaning tool 5 against a travelling handrail 1 through a pressing spring 30 and a cushion for cleaning. When the set cleaning time elapses and a cleaning face is renewed because the belt-like cleaning tool 5 becomes dirty, it is necessary to pull the belt-like cleaning tool 5 apart from the travelling handrail 1. In this case, a cleaning device receives a command from a control means, the cam 40 is rotated counterclockwise substantially 1/2 again by the motor 35, and the pressing base 29 is stopped at a lower limit position by a lower limit position detection means. As a result, a clearance is generated between the travelling handrail 1 and a cushion 28 of the pressing base 29 so that the belt-like cleaning tool 5 can be wound up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning a moving handrail of a passenger conveyor provided on a passenger conveyor such as an escalator.

[0002]

2. Description of the Related Art Conventionally, in a passenger conveyor such as an escalator or the like, as described in, for example, Japanese Patent Laid-Open No. Hei 5-24782, a means for selectively contacting a cleaning tool which slides on a moving handrail with the moving handrail is used. There has been proposed a moving handrail automatic cleaning device that automatically cleans the surface of the moving handrail with the cleaning tool as the moving handrail moves and automatically updates the cleaning tool.

[0003]

However, in the conventional apparatus for automatically moving a handrail of a passenger conveyor, the vertical movement driving method of the pressing portion at the time of automatically updating the cleaning tool is mechanically complicated. There is a lot of problems in the reliability and energy saving of the device due to the solenoid type which always has to be energized when pressed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a passenger conveyor moving handrail cleaning apparatus which is simple in structure, has high reliability, and can be operated by energization only when the pressing portion is moved up and down, and is most advantageous in energy saving. is there.

[0005]

In order to achieve this object, the present invention comprises means for selectively contacting a cleaning tool which slides on a moving handrail of a passenger conveyor with the moving handrail. The cleaning tool automatically cleans the surface of the moving handrail with the cleaning tool, and in the passenger conveyor moving handrail cleaning device that automatically updates the cleaning tool, the cleaning tool is automatically moved from the moving handrail when the cleaning tool is automatically updated. After the updating, the moving handrail is pressed again after the updating.

According to the above-mentioned means, as the means for bringing the cleaning tool which comes into sliding contact with the moving handrail of the passenger conveyor into contact with the moving handrail or separating the cleaning tool, a combination of an eccentric cam rotated by a motor and a one-way rotating clutch is used. Therefore, there are many advantages, such as a low energy consumption because the number of components is small, the operation reliability is high, the cost can be reduced, and the cleaning tool needs to be energized only when the cleaning tool is separated from the handrail or when pressed. .

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a handrail cleaning device for a passenger conveyor according to the present invention.

FIG. 1 is a side view of a passenger conveyor to which a handrail cleaning device for a passenger conveyor according to an embodiment of the present invention is attached.

The moving handrail 1 is configured to be movable along a guide 2, and moves in synchronization with an endless step (not shown). A moving handrail cleaning device 3 is provided at a portion facing the surface of the moving handrail 1, and details of the moving handrail cleaning device 3 are shown in FIG.

FIG. 2 is an enlarged side view of a main part of FIG. 1, showing a cleaning apparatus for moving a handrail of a passenger conveyor according to an embodiment of the present invention.

As shown in FIG. 2, the moving handrail cleaning device 3 installed on the passenger conveyor has a main body case 4 having an upper surface opening.
A first shaft body 6 for mounting the unused band-shaped cleaning tool 5 in a roll shape, and a second shaft body 7 for winding a used portion of the band-shaped cleaning tool 5
And a cleaning tool pressing means 8 including a push table elevating mechanism for pressing a part of an unused portion of the band-shaped cleaning tool 5 into contact with the surface of the moving handrail 1, and detecting whether or not the moving handrail is moving and its moving direction. The state of the moving handrail speed detecting means 9, the cleaning liquid tank 10 for impregnating the cleaning tool 5 with a cleaning liquid such as a silicon liquid for improving the cleaning effect, and the state of the moving handrail cleaning device 3 are monitored, stored, calculated and controlled. The apparatus includes at least an operation unit for instructing the start of operation of the control unit 11 and the moving handrail cleaning device 3 and an operation display unit 12 for displaying a state.

The pressing means 8 is arranged between the first shaft 6 and the second shaft 7, as shown in FIG. Belt cleaning tool 5
The second shaft 7 for winding the used portion of the second shaft 7 has a clutch mechanism 13 for preventing reverse rotation of the shaft and a second shaft for winding the used belt-shaped cleaning tool 5 around the second shaft 7. Cleaning tool updating means 14 for rotating the cleaning tool 7.

FIGS. 3 and 4 are structural views of a main part showing an embodiment of the pressing mechanism of the present invention.

As described above, the cleaning mechanism is such that when cleaning the moving handrail of the passenger conveyor, the band-shaped cleaning tool is pressed against the handrail surface, and when the set cleaning time has elapsed, the dirty band-shaped cleaning tool is updated. This is a pressing-pulling repetition mechanism that pulls the belt-shaped cleaning tool away from the surface of the moving handrail, winds up a predetermined amount, and then presses the moving handrail surface again.

The structure of the pressing mechanism 8 of the present invention will be described in detail. As shown in FIGS. 3 to 5, the pressing mechanism 8 is held by guides 23 and 24 inside a pressing holder 22 fixed on a pressing support table 21. And a pressing shaft 25 fixed to the guide 24 by screws, and further supported by a receiving metal 26 screwed to the guide 24 via a pin 27, and a sponge-like cushion 28 attached to the upper surface. Is guide 2
The belt-shaped cleaning tool 5 is configured to be pressed against the moving handrail 1 by a pressing spring 30 set between 3 and 24.

Further, the driving portion of the pressing mechanism includes an eccentric cam 40 fixed to an extension shaft 37 on a shaft of a motor 35 mounted on a motor support bracket 36, and an outer periphery integrated with the motor support base 36 at a tip thereof. A one-way rotating clutch 39 which is stopped and fixed to the engaged clutch supporting bracket 38 is fitted.

In order to transmit the rotation of the cam 40 to the pressing table 29, a roller 42 supported by a pin 41 at the lower end of the guide 23 is in contact with the outer peripheral surface of the cam. Then, the pressing table 29 is driven up and down while rolling on the outer periphery of the cam 40. In addition, means (not shown) for detecting the upper limit position and the lower limit position of the cam 40 is incorporated in this pressing mechanism.

With such a configuration, when the operation of the moving handrail 1 of the passenger conveyor is started, an operation start command is received from the moving handrail speed detecting means 9, and the motor 35 moves the cam 40 to the direction indicated by the solid arrow 50. Rotating in the direction (left rotation), the pressing table 29 presses the belt-shaped cleaning tool 5 against the moving handrail 1 via the pressing spring 30 and the cushion 28 (FIGS. 3 and 4).

In this case, since the one-way rotation clutch rotates in the forward direction, there is no rotation resistance, and the cam 40 is at the position where the upper limit position detecting means operates. In this embodiment, the position is 15 ° before the upper limit point. To stop (FIG. 3). The operation before the upper limit point is performed in order to prevent the stop position of the cam 40 from exceeding the upper limit point due to the inertia of the motor and other rotating bodies after the motor stop command by the operation of the detecting means.

In this manner, the cleaning of the moving handrail is started. During the cleaning, the cam 40 stopped before the upper limit point always moves in the direction of the dotted arrow 50 '(reaction force of the spring 30 of the pressing table 29). (Right rotation).
(FIG. 3) In order to hold the pressing table 29 against this reaction force, the present invention utilizes the reverse rotation preventing force of the one-way rotation clutch.

That is, the one-way rotating clutch 39 does not rotate in the direction of the dotted arrow 50 'for fixing the outer periphery of the one-way rotating clutch to the clutch supporting bracket 38 and holds the reaction force of the spring 30. ing. However, it should be noted here that the reaction force must be received in the direction of the dotted arrow 50 'as shown in FIG. If you take it in the direction, it will not function at all.

It is a matter of course that the one-way rotating clutch is selected to have a stopping torque enough to withstand the reaction force of the spring.

When the cleaning time has elapsed and the cleaning surface is to be renewed because the cleaning tool 5 has become dirty, it is necessary to separate the cleaning tool 5 from the handrail 1. In the case of the present invention, the cleaning device receives a command from the control means 11, rotates the cam 40 again by approximately half in the direction of the solid arrow 50 (left rotation) by the motor 35, and lowers the pressing table 29 by the lower limit position detection means. Stop at the lower limit position. As a result, as shown in FIG.
8, a band-shaped cleaning tool 5 can be wound up.

[0024]

As described above, the following effects can be expected from the belt-like cleaning tool pressing mechanism of the apparatus for cleaning a moving handrail of a passenger conveyor according to the present invention.

(1) The motor is activated only by vertical movement when the belt-shaped cleaning tool is renewed, and is a large energy saving type as compared with a solenoid type, which is always energized during the cleaning time.

(2) The structure is simplest because of the method of moving the cam up and down by the rotation of the cam by the motor.

(3) Since the reverse rotation preventing force of the one-way rotary clutch in which the holding of the pressing table is incorporated in the camshaft is applied, the number of components is small in combination with the cam system, high reliability, small size and light weight. An inexpensive cleaning device can be provided.

[Brief description of the drawings]

FIG. 1 is a side view of a passenger conveyor equipped with a passenger conveyor moving handrail cleaning device according to an embodiment of the present invention.

FIG. 2 is an enlarged side view of a main part of FIG. 1, showing a passenger conveyor moving handrail cleaning device according to an embodiment of the present invention;

FIG. 3 is a structural view showing an embodiment of a band-shaped cleaning tool pressing portion of the present invention.

FIG. 4 is a structural view of the passenger conveyor moving handrail shown in FIG. 3 in a direction perpendicular to the handrail.

FIG. 5 is an operation diagram of a pressing portion lower limit point of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Moving handrail 2 Guide 3 Moving handrail cleaning device 4 Main body case 5 Belt-shaped cleaning tool 6 First shaft 7 Second shaft 8 Cleaning tool pressing means 9 Moving handrail speed detecting means 10 Cleaning liquid tank 11 Control means 12 Operation display means 13 Clutch mechanism 14 Cleaning tool update means 15 Cleaning tool update drive motor 21 Press support base 22 Press holder 23 Guide 24 Guide 25 Press shaft 26 Receptacle 27 Pin 28 Cushion 29 Press table 30 Press spring 35 Motor 36 Motor support bracket 37 Extension shaft 38 Clutch support bracket 39 One-way rotation clutch 40 Cam 41 Pin 42 Roller 50 Rotation direction (left rotation) 50 'Rotation direction (right rotation)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Sasaki 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Japan Inside the Hitachi Building System Co., Ltd. (72) Masahiko Kamoshita 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Ltd. (72) Inventor Makoto Shimodera 1-6-6 Kanda Nishiki-cho, Chiyoda-ku, Tokyo Stock Company Hitachi Building Systems Co., Ltd. (72) Inventor Takashi Watanabe 1-1-1 Higashitaga-cho, Hitachi City, Ibaraki Prefecture Sun Tachiga Engineering Co., Ltd.

Claims (3)

[Claims] 1. A means for selectively contacting a cleaning tool that slides on a moving handrail of a passenger conveyor with the moving handrail, and automatically moves a surface of the moving handrail by the cleaning tool with the movement of the moving handrail. In the moving handrail cleaning device for a passenger conveyor that cleans and automatically updates the cleaning tool, the cleaning tool is separated from the moving handrail at the time of automatic updating of the cleaning tool, and is pressed against the moving handrail again after the update is completed. A moving handrail cleaning device for a passenger conveyor. 2. The apparatus for cleaning a moving handrail of a passenger conveyor according to claim 1, wherein, as means for separating and pressing the cleaning tool, vertical movement is performed by rotation of an eccentric cam. 3. A one-way rotation clutch for preventing a reverse rotation of a cam so that a cleaning tool pressed by a moving handrail does not separate during cleaning in the vertical movement method of the cleaning tool pressing means by the cam. The apparatus for cleaning a handrail of a passenger conveyor according to claim 1, wherein: