Speed limiter with car slipping preventive device

Abstract

The invention discloses a speed limiter with a car slipping preventive device. The speed limiter is characterized in that two ends of a spindle are connected with a support frame, a swing rod device is connected onto the support frame by swing shafts and comprises an upper swing rod and a lower swing rod, a rope pulley device sleeves the spindle, the upper swing rod is positioned above the rope pulley device, the lower swing rod is positioned below the rope pulley device and is symmetrical with the upper swing rod, actuating struts are arranged in the middle of the upper swing rod and the middle of the lower swing rod respectively, and the upper swing rod and the lower swing rod are connected with the support frame by the swing shafts. The speed limiter has the advantages that when a car of an elevator slips and the slipping distance of the car is farther than a distance set by a travel switch, the elevator can be braked; when the speed of the elevator is higher than a speed set by the speed limiter, the speed limiter can be mechanically actuated, and then safe pliers or a rope gripper can be driven to be actuated, so that the elevator can stop and is high in safety and reliability.

Description

technical field [0001] The invention relates to a speed governor with an anti-rolling device used in an elevator device. Background technique [0002] With the progress of society, elevators are used more and more widely in social life, and higher requirements are put forward for the equipment in the elevator industry. At present, there are many types of speed limiters. For example, the patent number is: 200620004641.5. The speed governor includes a sheave assembly, a swinging part and a bracket, and is characterized in that: the sheave part includes a ratchet, a sheave fixedly installed on the ratchet and wound with a speed governor rope, and four sides to the ratchet mounted on the ratchet through connecting pins. An octagonal disc-shaped cam, one end plane of the ratchet has 4-8 ratchets evenly distributed, the sheave part is installed on the bracket through the bearing and the sheave shaft, and the swing part includes a crescent-shaped pendulum , the pendulum is install...

AI Technical Summary

Problems solved by technology

[0003] At present, elevators are almost used in high-rise buildings in every city, and elevator accidents often occur frequently, and the elevator car slips and causes people to fall into the elevator shaft, causing casualties. The elevator is only limited to mechanical braking when the elevator is going up or down overspeed, which reduces the safety and reliability of the elevator operation. Therefore, the two-way speed governor for elevators with the above structure still has obvious technical defects.

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