Auxiliary mechanism for elevator speed limiter tensioning device

Abstract

The invention discloses an auxiliary mechanism for an elevator speed limiter tensioning device. The auxiliary mechanism comprises a first cable breakage protection mechanism, a second cable breakage protection mechanism and a wheel body circumference locking mechanism; the first cable breakage protection mechanism comprises an infrared detector and a protection arm which are arranged on a verticalguide rail; the second cable breakage protection mechanism comprises a vertical rod, a transverse rod and locking parts which are symmetrically arranged at the two ends of the transverse rod; and thewheel body circumference locking mechanism comprises flanges, a clamping groove and a sliding block. According to the auxiliary mechanism, two-stage cable breakage protection is achieved through thefirst cable breakage protection mechanism and the second cable breakage protection mechanism, the protection effect after a steel wire rope is broken is greatly enhanced, good limiting and buffering effects are achieved after cable breakage, the height of sudden descending of an elevator is reduced, the personnel potential safety hazards and equipment loss are reduced to the maximum extent, more golden rescue and rush repair time is won, the safety coefficient is high, and the practicability is higher.

Description

technical field [0001] The invention relates to the technical field of elevator equipment, and more specifically, relates to an auxiliary mechanism for a tensioning device of an elevator speed governor. Background technique [0002] As the height of the building increases, the speed of the elevator must increase accordingly. In high-speed elevators, due to the insufficient tension of the governor, the wire rope of the governor cannot meet the traction conditions, resulting in slippage. Not only is it impossible to effectively monitor the running speed of the elevator, but it also accelerates the wear and tear of the wire rope and even breaks, directly threatening the lives of passengers. The existing tensioning device includes a guide rail fixed in the pit of the hoistway, a tensioning wheel mounting seat, a tensioning wheel, a counterweight and a travel switch, etc., and the existing tensioning device has the following disadvantages: [0003] As the elevator rises higher,...

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Problems solved by technology

[0003] As the elevator rises higher, the greater the tensioning force is required. While the tensioning effect is higher, the toughness of the steel wire rope must be ensured, but the steel wire rope is easy to find broken ropes. At this time, the elevator speed limiter It only has the function of tensioning, but it cannot detect the problem of the wire rope at the first time, so that the accident cannot be contained at the first time to reduce the human-machine injury;

[0004] In the long-term operation of the elevator, it is inevitable that the components will be aging, which increases the risk of wire rope breakage, and the wire rope breakage poses a great threat to the elevator operation and the personal safety of passengers; The cable protection mechanism has the disadvantages of difficult maintenance and reduced safety factor

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