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Bidirectional safety tongs with reliable work

A safety gear, reliable technology, applied in the field of safety gear, can solve problems such as inconvenient installation

Active Publication Date: 2013-10-23
XJ SCHINDLER XUCHANG ELEVATOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a reliable two-way safety gear to solve the problem of inconvenient installation in the narrow space of the hoistway when two sets of overspeed brake safety gear are used in the prior art to brake the elevator car in two directions

Method used

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  • Bidirectional safety tongs with reliable work

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Embodiment Construction

[0013] An embodiment of a reliable two-way safety gear, in figure 1 The installation frame is square, with two side plates 3 on both sides, the two side plates 3 are arranged in parallel, and an end plate 2 is fixed at one end of the two side plates 3, and the end plate 2 connects the two side plates Connected together, a guide hole is provided on the end plate 2, and a brake roller linkage rod 1 is guided through the guide hole. The brake roller linkage rod 1 is fixed on the part between the two side plates 3. Pull plate 7, two sliding grooves 8 are provided on the lifting plate 7. The two sliding grooves 8 are respectively located on both sides of the roller linkage rod 1, and the extension directions of the two sliding grooves 8 are perpendicular to the two side plates 3. Drive wedges 5 are respectively fixedly arranged on the inner side walls of the two side plates, and plate springs 4 are arranged between the two drive wedges 5 and the corresponding side plates 3. One si...

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Abstract

The invention discloses a pair of bidirectional safety tongs with reliable work. A guide hole is formed in the end plate of a mounting frame; a brake roller linkage rod penetrates through the guide hole; a lifting plate is fixed on the brake roller linkage rod; slide slots with the extending direction vertical to two side plates are arranged at two sides of the brake roller linkage rod on the lifting plate; driving wedge blocks are fixed at the inside faces of the two side plates; the faces of the two driving wedge blocks, opposite to each other, are V-shaped; the inside faces of the two side plates are provided with limiting plates with V-shaped slide slots; two square friction blocks are arranged between the two driving wedge blocks, and are in sliding touch match with the V-shaped faces of the driving wedge blocks; a gap exists between the two friction blocks; two ends of a mounting shaft in the two friction blocks are respectively inserted in the corresponding slide slots and the V-shaped slide slots in a sliding mode; and when the brake roller linkage rod drives the lifting plate to move upwards or downwards, the two friction blocks are moved together and can clamp a track to realize the brake of an elevator car.

Description

Technical field [0001] The invention relates to a safety gear for braking an elevator car, in particular to a two-way safety gear with reliable work for braking the elevator car when the elevator car is overspeeding up or down. Background technique [0002] In order to prevent the elevator from going up or down too fast and accidents, safety gears are generally installed at both ends of the lower beam. When the car is overspeeding, the overspeed governor set in the elevator hoistway will drive the safety gear to stop the car by clamping the track. The elevator braking device in the prior art generally realizes the clamping of the track through the sliding of a triangular wedge, and is usually divided into two systems, an upward overspeed braking safety caliper and a downward overspeed braking safety caliper. The wedges cannot complete the clamping of the guide rail in two directions, and the two sets of system equipment are relatively large. It is inconvenient or even difficult t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/18
Inventor 孙红亮韩云飞易小红王炎涛杭帅楠
Owner XJ SCHINDLER XUCHANG ELEVATOR
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