Energy-consumption energy absorber capable of automatically changing resistance

Abstract

The invention relates to an energy-consumption energy absorber capable of automatically changing the resistance, which is mainly applied to a protective device of an inclined shaft runaway car in the field of mines. The energy-consumption energy absorber comprises a right bracket, a center screw, a roller and a left bracket and is characterized in that threads are arranged at one end of the center screw; the center screw is in threaded connection with the right bracket and the roller; the other end of the center screw is connected with a sleeve through a key; the sleeve is embedded with a shaft sleeve and is arranged on the left bracket; one side of a camping plate is connected with the shaft sleeve and the other side of the clamping plate is connected with a compression spring; the other end of the compression spring is arranged inside the right bracket; a movable friction dynamic friction plate is arranged on the inner surface of the roller and is alternately connected with a static friction plate arranged on the shaft sleeve; two steel wire ropes are uniformly wound on the outer surface of the roller and are positioned by rope-pressing blocks; and the right bracket and the left bracket are fixedly connected by anchor bolts. The invention has the advantages of the performance of automatically changing the resistance according to the impact energy of external load, strong reliability, high impact-resistant energy and capability of effectively avoiding car runaway accidents.

Description

technical field [0001] The invention relates to an energy-consumption type energy absorber, in particular to an energy-consumption type with automatic variable resistance, which is mainly used in anti-car devices for inclined shafts in the field of mines. Background technique [0002] Inclined shaft transportation is an important part of mine transportation. Inclined shaft sports car is an important hidden danger affecting mine safety production. Once a sports car occurs, it may cause equipment damage, interrupt inclined shaft transportation, cause serious economic losses, and seriously cause personnel damage. Casualties, therefore, the inclined well anti-car protection device is an indispensable safety facility in inclined shaft transportation. In the existing inclined well sports car protection device, the energy absorber is one of the necessary components, and its performance directly affects The safety of the protective device of the sports car on the inclined shaft. ...

AI Technical Summary

Problems solved by technology

[0004]The friction force of the first type of energy absorber is adjusted by the clamping force, and the clamping force is realized by the bolt tightening process. If the wire rope is too tight It is easy to be pulled off, and the wire rope is easy to be pulled out if it is too loose; the second type of energy absorber cannot automatically adjust the pressing force according to the impact energy because the pressing force is a certain value, so when calculating the friction force, it is calculated according to the impact force. If the resistance is set with a large energy value, the initial impact energy is large, and the buffer distance is short, resulting in a large slope failure force, which cannot achieve the buffer energy absorption effect and cannot effectively avoid accidents.

Images