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Elevator emergency stop apparatus

A stopping device and emergency technology, applied in the directions of transportation and packaging, elevators, etc., can solve the problems such as hindering the space saving of elevator installations, increasing the size of the hoistway, and increasing the depth of the pit.

Inactive Publication Date: 2006-06-21
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But in the emergency stop device of this elevator, because the safety link that connects each wedge is arranged in the below of car, therefore comprise the elevating main body whole body of car at the length of height direction to become long downwards, pit depth (car W

Method used

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  • Elevator emergency stop apparatus
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  • Elevator emergency stop apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0023] figure 1 It is a configuration diagram schematically showing the elevator apparatus according to Embodiment 1 of the present invention. In the drawing, a pair of car guide rails 2 is provided in a hoistway 1 . The car 3 is guided by the car guide rail 2 to move up and down in the hoistway 1 . A traction machine (not shown) for raising and lowering the car 3 and a counterweight (not shown) is arranged at an upper end portion of the hoistway 1 . The main rope 4 is wound around the driving sheave of the traction machine. The car 3 and the counterweight are suspended in the hoistway 1 by the main rope 4 . On the car 3, a pair of guide rail engaging portions 5 serving as braking means are arranged to face the respective car guide rails 2 . The car 3 is braked by the action of each guide rail engaging portion 5 .

[0024] In addition, a speed governor 6 serving as car speed detection means for detecting the ascending and descending speed of the car 3 is arranged at the u...

Embodiment approach 2

[0042] Figure 6 It is a front view showing the elevator apparatus according to Embodiment 2 of the present invention, Figure 7 yes means Figure 6 Side view of the elevator installation in . In this example, each guide rail engagement portion 5 is arranged in a groove portion 65 at the upper end of the longitudinal frame 63 . Other configurations and operations are the same as those in Embodiment 1.

[0043] In such an elevator apparatus, the safety link conventionally attached to the car can be omitted, and each guide rail engaging portion 5 can be arranged within the length of the car 3 in the height direction. Therefore, the length in the height direction of the elevating main body including the car 3 can be shortened, and space saving of the entire elevator apparatus can be realized.

Embodiment approach 3

[0045] Figure 8 is a front view showing an elevator apparatus according to Embodiment 3 of the present invention, Figure 9 yes means Figure 8 Side view of the elevator installation in . In this example, each rail engaging portion 5 is provided in a groove portion 65 in the middle portion of the vertical frame 63 . Other configurations and operations are the same as those in Embodiment 1.

[0046] As in Embodiments 1 and 2, also in such an elevator apparatus, space-saving of the entire elevator apparatus can be realized.

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PUM

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Abstract

An emergency stop device for an elevator, wherein a pair of car guide rails guiding a car is disposed in a hoistway. The car comprises a cab and a car frame supporting the cab. A pair of rail engagement parts are mounted on the car frame. Each rail engagement part comprises a wedge allowed to come into contact with and to be separated from each car guide rail and an operating mechanism for pressing the wedge against the guide rail. The operating mechanisms are formed to be operated independently of each other. The rail engagement parts are disposed so as to hold the car in the horizontal direction.

Description

technical field [0001] The present invention relates to an emergency stop device of an elevator, which forcibly stops a car ascending and descending at an abnormal speed. Background technique [0002] In the conventional elevator apparatus, an emergency stop device is used to prevent the car from falling. Japanese Patent Laid-Open No. 2002-220171 discloses an emergency stop device that presses wedges against a pair of car guide rails to prevent the car from falling. The car is provided with a safety link connecting the wedges. Each wedge and safety link are arranged below the car. A speed governor rope that moves synchronously with the lifting of the car is connected to the safety link. The governor rope is wound on the sheave of the governor. Therefore, by using the speed governor to restrain the speed governor rope, the safety link is actuated, and each wedge is pressed against each car guide rail at the same time. [0003] But in the emergency stop device of this ele...

Claims

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Application Information

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IPC IPC(8): B66B5/22
CPCB66B5/22
Inventor 佐佐木一浩小寺秀明木川弘冈本健一梶田昭成茶谷康史
Owner MITSUBISHI ELECTRIC CORP