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Escalator for negotiating curves

A technology of escalators and curves, applied in escalators, transportation and packaging, etc., can solve the problems that escalators cannot be used to pass, curved escalators are not suitable, dangerous, etc.

Inactive Publication Date: 2006-01-25
LEVYTATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the disclosed escalator cannot be used to traverse a track with multiple curved sections of different radii
[0005] Other curved escalators Curved escalators are disclosed in various patents or patent applications, but these either tend to have tapering steps as described above (see for example US 5158167), thus creating dangerous gaps in straight sections, or Prefer to use steps that move around a curve of constant radius, but such curved escalators are not suitable for use on curves with different radii
For example, US 5544729 uses complex formulas to calculate the shape of each rung, but the resulting rungs can only be used on a special curve
A slightly simpler system is disclosed in US 5165513, but if the steps used in the system are used in any track other than a circular track, the shape of the steps will create a gap between the treads

Method used

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  • Escalator for negotiating curves
  • Escalator for negotiating curves
  • Escalator for negotiating curves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Corresponding bending settings

[0050] Referring to the drawings, Figure 1 shows a plan view of straight and curved portions of an example of a novel escalator. One end of the pedal (1) is formed with a circular convex arc, and the other end of the pedal (1) is formed with a circular concave arc with the same radius.

[0051] When assembled, the convex arcuate portion of one pedal fits in the concave portion of the next pedal, regardless of the relative angle (up to a design-dependent maximum) between the centerlines of the two pedals. This angle can vary from one pair of pedals to the next.

[0052] Escalators for traversing curves may include open loops with reversing capability or endless circuits with reversible capability upon selection.

[0053] connection between units

[0054] Figure 2, which depicts a front view corresponding to the plane of Figure 1, shows a connection between the units that provides relative up or down movement capability and rotation...

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PUM

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Abstract

An escalator has steps shaped (1) to negotiate curves. The steps are suitably linked (4)(5)(6), guided (3)(10)(11), contained and powered so that the escalator can rise, fall, follow a horizontal path, be straight or curved in any predetermined sequence within the design parameters. The steps remain usable in both the flow and return paths. Shields are fitted to guard against entrapment of shoes or other apparel between the moving and stationary parts. For boarding or alighting safely, straight horizontal lengths may be included with appropriate means for passengers crossing from or to a stationary floor.

Description

technical field [0001] The present invention relates to an escalator capable of passing through curves. Background technique [0002] As we all know, an escalator is a machine that transports pedestrians and their luggage from one level to another. However, conventional designs are only suitable for runs that are straight when viewed in plan, which severely limits their applicability. [0003] And, at any one time, 50% of the steps in a conventional escalator are not being used because they are returning below the steps that are in use. It also means that a large part of the equipment is under the guide rails, making repairs difficult and expensive. [0004] WO 91 / 06501 discloses a circular escalator which runs along a closed loop having curved lines and straight sections. The treads of the escalator steps taper towards the inside diameter of the curve to allow the steps to pass through the curve. A complex gear mechanism splays the inner end sections of the steps outwar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B23/12B66B21/06B66B23/14
CPCB66B21/06B66B23/14B66B23/12
Inventor 约翰·考特·利维
Owner LEVYTATOR