JPH0532376U - Escalator moving handrail speed detector - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] In a moving handrail speed detector for an escalator, an operating piece protruding from the end face of the outer roller interferes with the running step and interferes with running of the step. The purpose is to lose. [Structure] A plurality of operating pieces 18 of an outer roller 14 of a moving handrail speed detecting device are embedded in the outer roller so that the tip end thereof is flush with the end face so as not to interfere with a step.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a moving handrail speed detecting device for an escalator or a moving sidewalk.

[0002]

[Prior Art]

 A conventional moving handrail of an escalator will be described with reference to FIGS. 4 to 6.

A drive device 2 installed on the upper floor of the escalator truss 1 is wound between a step chain drive sprocket 3 and a driven sprocket 4 provided on the lower floor of the truss 1 via a drive chain and a drive large sprocket. The step chain 5 is circulated and the steps 6 attached to the step chain are circulated on the guide rails 7.

On the other hand, the moving handrails 9 wound around the balustrades 8 provided on both sides of the step 6 are cyclically driven by the frictional force of the handrail drive wheels 11 of the moving handrail drive device 10 provided inside the truss. In this way, the moving handrail 9 is driven in synchronization with the steps 6 after the driving force of the drive device 2 passes through the drive chain and then branches and the driving force is transmitted to the handrail driving wheels 11. ing.

With the above structure, the escalator travels in synchronization with the steps 6 and the moving handrails 9 to transport passengers.

By the way, since the step 6 is the power transmission of the power from the drive device 2 by the engagement of the chain and the sprocket, the speed does not change due to slippage during traveling.

On the other hand, the moving handrail 9 is driven by the handrail drive wheels 11 by operating the handrail drive device 10 by the power transmitted from the same drive source 2 as the step 6 by a drive chain or the like. Since power is transmitted to the handrails by frictional force with the handrail drive wheels 11, slippage may occur in traveling of the moving handrail 9. Therefore, a moving handrail speed detecting device 12 or the like is provided so as to detect slippage of the moving handrail 9 and, if necessary, to take measures such as stopping the escalator (for example, JP-A-63-143 191). ).

The moving handrail speed detecting device 12 is installed on an L-shaped support frame 13 provided on the truss 1 on the return path of the moving handrail 9.

That is, the outer roller 14 that is in contact with the outer decorative surface of the moving handrail 9 is provided from the support frame 13, while the outer roller 14 is in contact with the inside of the moving handrail 9 so that the moving handrail 9 is sandwiched by the outer roller 14. A roller 15 is provided.

The inner roller 15 is mounted so that a supporting piece 16 thereof moves up and down by a screw 17 to appropriately hold down the moving handrail.

The outer roller 14 is provided with four operating pieces 18 projecting toward the steps at equal intervals around the end surface of the outer roller 14, and approaches the tip of the operating piece 18 to detect non-contact detection of an electromagnetic proximity switch 19 or the like. Install a vessel.

With the above-described configuration, the non-contact detector 19 sequentially detects each operating piece 18 that is passing through in rotation, and outputs a pulse signal corresponding to the moving speed of the moving handrail 9 to control the speed of the moving handrail 9 by escalator control. On the other hand, the speed of the step is separately detected from the electric motor in the drive unit, and compared with the speed of the moving handrail to detect the synchronization between the two and the control panel to take necessary measures. I am configuring.

[0013]

[Problems to be solved by the device]

 Generally, the moving handrail 9 of the escalator is structured so as to move on both sides of the running step 6, and the moving handrail speed detector 12 is installed at the same height as the step 6 on the way back of the moving handrail 9. There is. Therefore, the plurality of operating pieces 18 attached to the end surface of the outer roller 14 of the moving handrail speed detecting device 12 and the non-contact detector 19 installed in the vicinity thereof are both arranged so as to project to the running side of the step 6. ing.

As described above, since the operating piece 18 is arranged so as to project, there is a risk that it may interfere with the running step 6 and that maintenance and inspection is difficult to perform.

It is an object of the present invention to configure a moving handrail speed detecting device in which an operating piece provided on the outer roller and rotating does not interfere with running of a step.

[0016]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention embeds an operating piece that can be attached to the end surface of an outer roller of a moving handrail detection device, flush with the end surface of the outer roller, and installs a non-contact detector close to the end surface of the outer roller. To do.

[0017]

[Action]

 This prevents the rotating operating piece provided on the side surface of the step from interfering with the step and hindering the running of the step.

[0018]

【Example】

 The present invention will be described with reference to the embodiments shown in FIGS.

The moving handrail speed detecting device 12 is installed by an L-shaped support frame 13 provided on the truss 1, which is an intermediate portion of the return path of the moving handrail 9 inside the balustrade.

An outer roller 14 is provided from the support frame 13 in contact with the outer decorative surface of the moving handrail 9 and, on the other hand, in a state of being in contact with the inner side of the moving handrail 9 and sandwiching the moving handrail 9 with the outer roller 14. An inner roller 15 is provided.

The inner roller 15 is mounted so that a supporting piece 16 thereof moves up and down by a screw 17 to appropriately hold down the moving handrail 9.

In the outer roller 14, four operating pieces 18 of a magnetic metal body are embedded in the outer roller 14 so as to be flush with each other at the periphery of the opposite end surface of the support frame 13 so as to rotate integrally. Form. An electromagnetic proximity switch 19 is installed near the operating piece 18. The non-contact detector 19 sequentially detects each actuating piece 18 passing near the tip thereof, outputs a pulse signal corresponding to the moving speed of the moving handrail 9, and inputs this to the escalator control panel. To do.

As described above, by embedding the operating piece 18 in the outer roller, the operating piece 18 rotating integrally with the outer roller 14 does not interfere with the step 6 and hinders the running of the step. Such accidents can be prevented in advance.

It should be noted that the operation piece 18 may be provided on the inner roller 15 instead of the structure in which the operation piece is embedded in the outer roller.

[0025]

[Effect of the device]

 The present invention provides a moving handrail speed detection device that prevents accidents due to interference between the operating piece of the outer roller of the speed detection device and the steps, detects the handrail speed with certainty, and performs safer escalator operation. ..

[Brief description of drawings]

FIG. 1 is a front view of a moving handrail speed detecting device according to the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

FIG. 3 is a view taken along the line III-III of FIG.

FIG. 4 is a front view of a conventional moving handrail speed detecting device.

5 is a view taken along the line VV of FIG.

FIG. 6 is a front view of an escalator.

[Explanation of symbols]

 9 Moving handrail 12 Moving handrail speed detection device 14 Outer roller 15 Inner roller 18 Actuating piece 19 Non-contact detector

Claims (1)

[Scope of utility model registration request] 1. An escalator for detecting the speed of a moving handrail by a pulse signal of a non-contact detector installed in the end face of the roller, the roller having an operating piece protruding from the lower surface of the moving handrail. 2. The moving handrail speed detecting device for an escalator, wherein the operating piece is embedded inside an end surface of the roller.