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Safe device of elevator

A safety device and elevator technology, used in transportation, packaging, elevators, etc., can solve the problems of rotation speed fluctuation, emergency braking action delay, and friction between the governor roller and the guide rail, etc., to improve detection accuracy and reliability. sexual effect

Inactive Publication Date: 2008-10-01
HITACHI LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this time, as the distance between the elevator car and the guide rail changes, the displacement of the roller pressing spring, that is, the applied force, will also vary slightly, which may cause fluctuations in the frictional force between the governor roller and the guide rail.
For this reason, when the speed of the elevator car is kept constant, the rotational speed of the governor roller will also fluctuate, which may lead to a decrease in the detection accuracy of the governor device and a delay in the emergency braking action of the emergency brake device. , it may even appear that the emergency braking device does not operate

Method used

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Examples

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Embodiment Construction

[0039] An embodiment of the present invention will be described below with reference to the drawings.

[0040] figure 1 It is a side view showing a schematic configuration of an elevator to which an embodiment of the elevator safety device of the present invention is applied. Fig. 2 is a partially enlarged side view showing an important structure of an embodiment of the elevator safety device of the present invention, image 3 It is a partially enlarged side view showing the detailed structure of the governor device and its surroundings.

[0041] Figure 1 to Figure 3 The shown cable-type elevator has an elevator car 1, a main rope 3 connected to the elevator car 1 at one end and a counterweight 2 at the other end, and a hoist 4 (driver) that is wound around the main rope 3 and driven to rotate. device). On one side (the right side in the figure) and the opposite side (the left side in the figure) of the elevator car 1 side of the elevator passage, guide rails 5A, 5B are a...

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PUM

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Abstract

An elevator safety device is provided. The elevator safety device is able to improve a detection precision of a speed governor device, further improving reliability of emergency braking motion. The device has the speed governor device of a speed governor roller rotating and contacting the lead rail and arranged on the elevator cage, and a safety device that processes emergency braking when the elevator cage is overspeed measured by the speed governor device such as the elevator of the emergency braking device. The safety device has an accessory roller mechanism having an accessory roller rotating and contacting the lead rail and arranged on the elevator cage; a swing bearing mechanism that supports the speed governor device and the accessory roller mechanism to swing related to the elevator cage; and a tension rod connected between the speed governor roller and the accessory roller, endowing press related to the lead rail to the speed governor and press related to the second lead rail to the accessory roller.

Description

technical field [0001] The invention relates to a safety device for an elevator that performs emergency braking on the elevator car when it is detected that the elevator car is overspeeding, and in particular relates to a speed governor device that detects the overspeeding of the elevator car is installed on the elevator car Safety devices on the elevator. Background technique [0002] For example, a rope-type elevator generally has an elevator car, a main rope connected to the elevator car at one end and a counterweight at the other end, and a hoist (driver) that is wound around the main rope and driven to rotate. In addition, guide rails are provided on the side of the elevator car and on the opposite side of the elevator passage, and guide rollers respectively engaged with the guide rails are provided on the elevator car to guide the elevator car up and down. Then, the main rope is reeled up or unwound by the rotational drive of the hoist, whereby the elevator car is rai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/04
Inventor 池田裕渡边春夫重田政之
Owner HITACHI LTD
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