Elevator device

A technology of elevators and elevator cars, applied in the field of buffers, can solve problems such as rising costs and ineffective use of space, and achieve the effect of reducing the depth size

Inactive Publication Date: 2008-07-02
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, not only is there a problem that the space cannot be used effectively, but there is also a big problem that, in building construction, the excavation depth needs to be increased to ensure a sufficient depth dimension for the elevator pit, which leads to an increase in cost

Method used

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Examples

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Embodiment Construction

[0035] Embodiments of the present invention will be described below with reference to the drawings.

[0036] Fig. 1 is a partial sectional view showing a first embodiment of an elevator buffer according to the present invention, Fig. 2 is an explanatory view showing a relationship between a buffer and an elevator car, and Fig. 3 is an explanatory view showing a schematic structure of an elevator.

[0037] As shown in FIG. 3 , the elevator in this embodiment is configured such that a wire rope 13 is wound around a sheave 17 of a hoist 14 installed in a machine room 15, and the wire rope 13 is used to suspend the elevator car as a lifting body. 11 and the counterweight 12, by rotating the sheave 17, the elevator car 11 and the like can be operated. In such an elevator it is obligatory to install a buffer 1 in the elevator pit 16a at the bottom of the hoistway 16 . In addition, the buffer 1 is sometimes installed under the counterweight 12 (not shown in the figure for convenienc...

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PUM

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Abstract

It is possible to provide a buffer for an elevator and an elevator apparatus including the buffer, which can reduce the depth of an elevator pit. The elevator device has a buffer (1), which has: a working cylinder (2), which is installed at the bottom of the hoistway (16), filled with working oil (5); and a plunger (3), The plunger is inserted into the working cylinder (2) and can be displaced in the vertical direction, wherein the plunger (3) is arranged so that when the elevator car (11) reaches a position lower than a specified height, in order to To avoid collision with the elevator car (11), the plunger (3) descends. And, when the elevator car (11) descends at an abnormal speed, the buffer (1) forms a stretched state.

Description

technical field [0001] The invention relates to a buffer, which is arranged at the bottom of the elevator hoistway, and when the elevator car or the counterweight approaches the bottom of the hoistway at a speed exceeding the normal speed, the impact force can be moderated with a proper deceleration, so that the elevator car The carriage or counterweight is safely stopped. Background technique [0002] Under normal conditions, the elevator's descending position will not exceed the normal stop position of the lowest floor, but when some abnormality occurs, the descending position of the elevator may exceed the normal stop position of the lowest floor. For this reason, in order to alleviate the impact force of the elevator car, even when the above-mentioned abnormality occurs, the elevator car can be safely stopped, and it is obligatory to install a buffer in the elevator pit formed at the bottom of the elevator hoistway. As we all know, as a prerequisite, the installed buffe...

Claims

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Application Information

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IPC IPC(8): B66B5/28
Inventor 小野哲志松冈秀佳
Owner HITACHI LTD
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