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Arrangement for stopping an elevator car in an emergency braking situation, and elevator

An emergency braking and elevator technology, applied in the field of elevators, can solve the problems of elevator car deceleration, friction and grip force reduction, etc., and achieve the effect of reliable work

Inactive Publication Date: 2009-04-15
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in elevators without counterweight, but also in traction sheave elevators in which the counterweight is particularly light relative to the elevator car, emergency braking of the elevator car during the upward movement, together with the effect of gravity, may produce Elevator car deceleration causing potential hazards
In a fast counterweighted elevator, due to the sudden stop of the traction sheave, the rope will start to slip at high speed while the frictional grip force is reduced, which again may cause some new problems

Method used

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  • Arrangement for stopping an elevator car in an emergency braking situation, and elevator
  • Arrangement for stopping an elevator car in an emergency braking situation, and elevator
  • Arrangement for stopping an elevator car in an emergency braking situation, and elevator

Examples

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Embodiment Construction

[0012] figure 1 Shows a simplified and schematic side view of a traction sheave elevator without counterweight, comprising at least one elevator hoist machine 5 with a hoisting motor, traction sheave 6, elevator control system 8 and installation An elevator car inside a car frame 2 which is movable in a substantially vertical direction along guide rails 4 and suspended on hoisting ropes 3 . The first end 29 of the hoisting rope 3 is fixed to a fixed point on the rope compensating device, whereby the hoisting rope passes over the deflection pulley 9a included in the rope compensating device and thus from one or more deflectors arranged at the bottom of the elevator shaft. The hoisting ropes pass under the pulley 9b, after which the hoisting ropes lead upwards to a diverting pulley 9c below the elevator car, and after passing this pulley, the hoisting ropes go down again from under one or more further diverting pulleys 9d arranged at the bottom of the elevator shaft pass. Afte...

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Abstract

The invention relates to an arrangement for stopping an elevator car in an emergency braking situation, the elevator according to said arrangement comprising at least a hoisting machine (5) which has a traction sheave (6) fitted on its axle (10) and a brake (19) for braking the rotary motion of the axle (10), and an elevator car (1) suspended on a set of hoisting ropes (3) and adapted to be moved in a substantially vertical direction along guide rails (4) by means of the traction sheave (6) and the hoisting ropes (3). The traction sheave (6) is adapted to be rotated via a one-way clutch (26) or a corresponding element.

Description

technical field [0001] The invention relates to a stop device for an elevator car in case of emergency braking, as stated in the preamble of claim 1, and also to an elevator, as stated in the preamble of claims 9 and 10 . Background technique [0002] In more sophisticated elevators, the deceleration of the elevator under normal conditions, that is, when the elevator car is about to stop at a certain landing, is usually achieved by motor braking. However, according to the regulations, the elevator must be equipped with a device capable of emergency braking, starting in abnormal conditions such as caused by power failure or certain disturbances affecting safety. The emergency brake used is, for example, a conventional elevator brake, which normally holds the elevator car stationary when it is at a certain landing. Especially in elevators without counterweight, but also in traction sheave elevators in which the counterweight is particularly light relative to the elevator car,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B11/04
CPCB66B11/043B66B5/02B66B11/08F16D41/066
Inventor 乔玛·穆斯塔拉蒂埃斯科·奥兰科
Owner KONE CORP
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