JPH0687591A - Driving device for passenger conveyor - Google Patents

Abstract

PURPOSE:To reduce the occupied space of a machine room and facilitate maintenance and inspection by disposing a motor above a speed reducer, and driving each sheave through a wrapping connector on the main frame side end side. CONSTITUTION:In a driving device 10 for a passenger conveyor, the input shaft of a parallel shaft speed reducer 3 is put out on both sides. A sheave 13 is fitted to the input shaft 3a on the main frame side end side, and a sheave 14 is fitted to the output shaft 9a of a motor 9. The respective sheaves 13, 14 are then rotatory-connected by a wrapping connector driver 15. An electromagnetic brake 21 is disposed at the input shaft 3b on the main frame inner side of the parallel shaft speed reducer 3, and a speed detector 22 is disposed outside thereof. A flywheel 23 is disposed on the bearing side of the output shaft 9a of the motor 9, that is, inside of the sheave 14, and the end face position of the speed detector 22 is disposed more on the parallel shaft speed reducer 3 side than the anti-output shaft end horizontal projection position of the motor 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive unit for a passenger conveyor, and more particularly to a drive unit suitable for saving space in a machine room.

[0002]

2. Description of the Related Art Various installations and arrangements of electric motors and speed reducers have been devised. For example, as described in Japanese Utility Model Laid-Open No. 60-183784, an elastic body that rotationally connects the electric motor and the speed reducer is arranged inside the main frame, and the electromagnetic brake is provided on the main frame side end side of the input shaft of the speed reducer. There is also an example in which it is designed to save space.

[0003]

In the prior art, when the machine room is entered for maintenance or inspection, the winding transmission device for rotationally connecting the electric motor and the speed reducer is arranged inside the main frame, so that the elastic force is mistakenly changed. There was a risk that I would get on my body and amputate.
Further, since the electromagnetic brake is arranged on the main frame side end side of the input shaft of the speed reducer, maintenance is troublesome.

[0004]

The above object is to provide a winding transmission device for rotationally connecting an electric motor and a speed reducer on the main frame side end side.
This is achieved by disposing the electromagnetic brake inside the main frame of the input shaft of the speed reducer.

[0005]

In the present invention, a speed detector (not shown in the prior art) is arranged outside the electromagnetic brake, and the speed detector end face position is closer to the speed reducer than the anti-output shaft end horizontal projection position of the electric motor. It is achieved by placing

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

A sprocket 11 is attached to an output shaft 4 of a parallel shaft speed reducer 3 whose bottom is fixed to a machine room 2 at the end 1 of a main frame, and is coaxially rotated with a sprocket 6 driven by a chain 5 connected to the sprocket 11. An electric motor 9 for transmitting power to a step chain 8 driven by a sprocket 7.
In the passenger conveyor drive device 10 consisting of, the input shaft of the parallel shaft speed reducer 3 is biaxially aligned, the sheave 13 is provided on the input shaft 3a on the end side of the main frame, and the sheave 14 is provided on the output shaft 9a of the electric motor 9. Each of the sheaves is attached and rotatably connected by the transmission device 15, the electromagnetic brake 21 is arranged on the input shaft 3b inside the main frame of the parallel shaft reducer 3, and the speed detector 22 is arranged outside the same. The flywheel 23 is arranged on the bearing side of the output shaft 9a, that is, on the inside of the sheave 14, and the end face position of the speed detector 22 is set from the anti-output shaft end horizontal projection position of the electric motor 9 to the parallel shaft speed reducer 3
Placed to the side.

According to this embodiment, when entering the machine room for maintenance and inspection, there is no concern that the electromagnetic brake 21 and the speed detector 22, which are precision devices, may be directly put on the foot, and
The inspection work of the electromagnetic brake 21 and the speed detector 22 which are frequently maintained can be easily performed.

[0009]

According to the present invention, in the drive unit for the passenger conveyor, the electric motor is arranged above the speed reducer, and each sheave is wound around the end of the main frame to be transmitted, thereby occupying the space occupied by the machine room. Easy to carry out maintenance and inspection. or,
The electromagnetic brake attached to the input shaft inside the main frame of the reduction gear, the end face position of the speed detector is placed on the parallel shaft reduction gear side from the anti-output shaft end horizontal projection position of the motor to enter the machine room during maintenance and inspection. At this time, the electric motor plays a role of protecting those devices, and the maintenance and inspection work can be easily performed. Further, by arranging the electromagnetic brake and the speed detector, which are precision devices, inside the main frame, it is possible to easily perform maintenance and inspection work of those devices which are frequently maintained.

[Brief description of drawings]

FIG. 1 is a front view of a drive device according to an embodiment of the present invention.

FIG. 2 is a side view of a driving device according to an embodiment of the present invention.

[Explanation of symbols]

3 ... reducer, 9 ... electric motor, 10 ... drive device, 11 ... sprocket, 13, 14 ... sheave, 15 ... transmission device, 23 ...
Flywheel.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Asami Haraguchi 1070 Ige, Katsuta City, Ibaraki Prefecture Hitachi Ltd. Mito Plant

Claims (2)

[Claims] 1. A parallel shaft gear type speed reducer and an electric motor which are installed in a machine room at the end of the main frame of a passenger conveyor and rotationally drive and control a large sprocket for step chain driving of steps arranged in the main frame. In the passenger conveyor drive device, the electric motor is arranged above the parallel shaft gear type speed reducer, the output shaft of the electric motor is arranged on a side end side of the main frame, and a flywheel is arranged on a bearing side of the output shaft. Attaching a sheave to the end of the output shaft, arranging the sheave on the opposite side of the input shaft of the parallel shaft gear type speed reducer, and rotationally coupling with an elastic body, The input shaft is projected to the other end side, the electromagnetic brake is attached to the speed reducer side, the speed detector is arranged on the shaft end side, and the output shaft of the parallel shaft gear type speed reducer is placed on the sheave side of the input shaft. Extend it to a position facing the large sprocket for driving the step chain. Driving device for a passenger conveyor, characterized in that attached the sprocket to rotate linked Ainsworth. 2. A passenger conveyor drive device in which an end face position of the speed detector according to claim 1 is arranged closer to the speed reducer than a horizontal projection position of an opposite output shaft end of the electric motor.