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Positive linear handrail drive with toothed belt

A technology of handrails and driving surfaces, applied in escalators, transportation and packaging, conveyors, etc., can solve problems such as gripping surface wear

Inactive Publication Date: 2011-02-02
OTIS ELEVATOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of the device shown in this document is that there is a tendency to create a vertical separation force which interferes with the engagement between the drive belt and the handrail
The presence of these rollers against the gripping surface still has the potential to cause wear on the gripping surface

Method used

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  • Positive linear handrail drive with toothed belt
  • Positive linear handrail drive with toothed belt
  • Positive linear handrail drive with toothed belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] figure 1 A passenger conveyor 20 is shown schematically. In this example, the passenger conveyor is an escalator having a plurality of steps 22 for transporting passengers between landings 24 and 26 on different floors inside a building. The present invention is not limited to escalators, but the present invention is equally applicable to other forms of passenger conveyors such as moving walkways.

[0020] figure 1 The illustrated example of a passenger conveyor includes, for example, a handrail 30 that travels with the steps 22 that can be grasped by a passenger standing on the conveyor for self-stabilization. figure 2 schematically shows a figure 1 An example armrest 30 is shown with a gripping surface 32 facing generally upward. exist figure 2 , this view corresponds to the figure 1 The portion of the section line shown has the gripping surface 32 facing downwards, since the movement of the armrest is along this so-called return of the armrest loop.

[0021]...

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PUM

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Abstract

A passenger conveyor handrail (30) is driven by a device (40) including a toothed drive belt (42). An example drive belt has a plurality of teeth (46) with an at least partially concave surface (50) for engaging teeth (36) on the handrail (30). A disclosed example also includes at least partially convex projections (52) near an end of each tooth on the drive belt (42). A driven surface (48) of the drive belt (42) includes a plurality of grooves (70) arranged to allow the drive belt to slip relative to a drive wheel (60) under certain loading conditions. The disclosed example arrangement facilitates proper engagement between a drive belt (42) and a toothed handrail (30) while avoiding vertical separation forces between them, which allows for eliminating pinching rollers that would otherwise engage a gripping surface (32) on the handrail (30).

Description

technical field [0001] The present invention relates generally to passenger conveyors. More specifically, the present invention relates to a device for actuating a handrail of a passenger conveyor. Background technique [0002] Passenger conveyors, for example, can efficiently move passengers between different floors within a building, or move passengers through long and narrow passages. Typical devices include a plurality of steps or a conveyor belt on which standing individuals can be carried from one location to another. Handrails typically press over the railing and provide a surface for the individual to grip on to keep themselves stable. A typical handrail structure has a generally flat surface that is oriented either parallel to the ground or to the direction of motion of the conveyor (ie, along the ascent of the escalator at an angle to vertical). [0003] The handrail is driven to move with the steps or conveyor belt. A handrail drive mechanism causes the desire...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B23/04B66B23/24
CPCB65G19/30
Inventor C·郭J·M·米尔顿-伯努瓦B·R·谢维尔特D·林德迈尔K·泽豪森B·恩格尔克
Owner OTIS ELEVATOR CO