JP2000281270A - Passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change the speed of a passenger conveyor by providing a first controller controlling the drive device of the passenger conveyor and a second controller variably controlling the speed of the drive device, and relaying the cables of the first and second controllers and the cable of the drive device with a relay box. SOLUTION: The control device of a passenger conveyor having a plurality of footsteps moved in a frame 1 via a chain 10 is constituted of a controller 5 controlling the operation of a motor 2b at a constant speed and controlling electric facilities such as safety switches and luminaires and a controller 6 variably controlling the speed of the motor 2b. The controller 5 and a relay box 4 are connected via a connecting cable 12, the controller 6 and the relay box 4 are connected via a connecting cable 13, and the motor 2b and the relay box 4 are connected via a connecting cable 14. The passenger conveyor capable of simply changing its speed can be obtained, and the passenger conveyor can be operated at a constant speed by the controller 5 even when the controller 6 fails.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a passenger conveyor such as an escalator.

[0002]

2. Description of the Related Art In general, the speed at which a step provided on a passenger conveyor is driven is constant, and the driving speed of the step cannot be changed by operating a switch or the like. However, in recent years, falling accidents and the like occur when elderly people get on the passenger conveyor. There has been a growing demand for passenger conveyors having a variable speed drive function. For example, when adding such a variable speed drive function to an existing passenger conveyor, after removing the existing control unit that controls the operation of the drive motor and incorporating a variable speed control circuit, the modified control unit is used. By re-attaching and changing the wiring, the existing control unit was modified.

[0003]

However, in the above-mentioned prior art, when the existing control unit is removed and a new control unit is mounted, there is a problem that the manufacturing cost of the control unit is high. On the other hand, the existing control unit is expensive. However, there is a problem that the passenger conveyor must be stopped for a long time because the construction period required for the remodeling work is long.

In any case, it is necessary to temporarily remove the existing control unit, so that the wiring must be restarted from the beginning, and from this point, there is a problem that the construction period becomes long.

Further, as described above, the control device becomes large in size with the new installation or modification of the control unit. It takes time and effort to newly install or modify the system, or significantly change the wiring, thereby increasing the construction period and costs.

The present invention has been made in view of such a situation in the prior art, and an object of the present invention is to provide a passenger who can change the driving speed of a plurality of steps without removing an existing control unit. To provide a conveyor.

[0007]

To achieve the above object, the present invention relates to a passenger conveyor having a first control unit for controlling a driving device for driving a plurality of steps in a frame of a machine room. A second control unit for variably controlling the speed of the driving device is provided adjacent to the same frame separately from the first control unit, and a cable for the first control unit and the second control unit is provided. And a relay box for relaying the cable of the driving device.

In the present invention having the above-described structure, the driving device speed is variably controlled by the second control unit provided separately from the first control unit. Thus, the drive speed of the step can be changed by the control of the second control unit without removing the existing control unit, that is, the first control unit. In addition, since the relay box is provided to relay the cables of the first control unit and the second control unit and the cable of the driving device, the cables do not become entangled in the frame in the machine room, and the cables are movable. Also, it can be prevented from being caught on the part.
Further, since the second control unit is detachably provided so as to be attached and detached from above the machine room, the second control unit can be easily taken out of the machine room frame during maintenance,
Maintenance in the frame can be easily performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a passenger conveyor according to the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a passenger conveyor provided with a control device according to one embodiment of the present invention, FIGS. 2 and 3 are explanatory views showing an enlarged upper portion of FIG. 1, and FIG. It is explanatory drawing which shows the state at the time of operation | work.

The passenger conveyor shown in FIG. 1 is a frame 1 extending diagonally between two floors (not shown).
And a driving device 2 provided in the frame 1 and including a speed reducer 2a and a motor 2b, and a driving gear 7 rotatably driven by the driving device 2 via a first chain 8.
And a driven gear 9 that is rotationally driven by the driving gear 7 via a second chain 10, and a plurality of steps 11 that are connected to the second chain 10 and move within the frame 1. Machine room 1a formed on the upper end side of frame 1
A drive device 2 and a drive gear 7 are installed in the machine room 1, and the upper part of the machine room 1 a is covered with a floor plate 3.

The control device according to this embodiment includes a motor 2
b and a first control unit 5 for controlling electric equipment such as a safety switch and a lighting device (not shown), and a new second control unit for variably controlling the speed of the motor 2b.
(Inverter control). 12
Is a first connection cable, and the first connection cable 12
The first control unit 5 and the relay box 4 are connected via the
Control unit 6 and relay box 4 via connection cable 13
Is connected to the motor 2 via the third connection cable 14.
b and the relay box 4 are connected. In this way, since the newly-installed second control unit 6 for variably controlling is newly added, there is no need to remove the existing first control unit 5 or the like, and a passenger conveyor that can easily change the speed is obtained. be able to. Also, should the newly installed second control unit 6 fail,
The constant speed operation can be performed by the existing first control unit 5.

Further, in the junction box 4, each connection cable 12,
The connection of the cables 13 and 14 not only prevents the cables from being entangled in the machine room 1a, but also prevents the cables from being caught on the movable parts.

Further, the second connection cable 13 is set to a predetermined length. For example, during maintenance and inspection of a passenger conveyor, the second connection cable 13 is connected to the second control unit 6 and the junction box 4 while the second connection cable 13 is connected. The length is long enough to carry out the control unit 6 out of the frame 1, so that the carrying out can be easily carried out. Further, at the time of maintenance, the passenger conveyor can be moved while the second control unit 6 is carried out of the frame 1 as shown in FIG.

[0015]

As described above, according to the present invention, it is possible to obtain a passenger conveyor capable of changing the speed without removing the first control unit which is the existing control unit.
By installing the junction box, it is possible to prevent entanglement of cables and catching on movable parts.

Further, since the second control unit can be attached and detached from above, the second control unit can be easily carried out of the machine room at the time of maintenance, and a space for maintenance work can be easily secured in the machine room.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a passenger conveyor including a control device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an enlarged upper portion of FIG. 1;

FIG. 3 is the same explanatory diagram as FIG. 2 at the time of maintenance work.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 1a Machine room 2 Drive 2a Reduction gear 2b Motor 3 Floor plate 4 Relay box 5 First control unit 6 Second control unit 7 Drive gear 8 First chain 9 Follower gear 10 Second chain 11 Step 12, 13, 14 Connection cable

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Koji Yamashita 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo F-term in Hitachi Building Systems Co., Ltd. 3F321 AA01 AA02 CA00 DC01

Claims (3)

[Claims] 1. A passenger conveyor having a first control unit for controlling a driving device for driving a plurality of steps in a frame of a machine room, wherein the passenger conveyor is adjacent to the same frame separately from the first control unit. A second control unit for variably controlling the speed of the driving device, and a relay box for relaying the cables of the first control unit and the second control unit and the cable of the driving device. A passenger conveyor characterized by the following. 2. The passenger conveyor according to claim 1, wherein said second control unit is detachably provided so as to be attached and detached from above. 3. The cable length of the second control unit is
2. The passenger conveyor according to claim 1, wherein the length is set to such a length as to be able to be carried out of a frame of the machine room.