Variable resistance dissipative energy absorber

Abstract

The invention relates to a dissipative energy absorber, in particular to a variable resistance dissipative energy absorber, which is mainly applied to a free-sliding protecting device in an inclined shaft in the field of mine. The variable resistance dissipative energy absorber comprises a central screw, a driving wheel, an upper bearing seat and a lower bearing seat, wherein the driving wheel is provided with a central hole, and the central hole is provided with an internal nut which is fixedly connected with the central screw; one end of the driving wheel is provided with an external groove, and the driving wheel is fixedly connected with a driving friction plate through the external groove; the other end of the driving wheel is provided with a roller, and wire ropes can be wound and fixed on the roller; the upper bearing seat and the lower bearing seat are fixedly connected through the central screw; the inner surface of the lower bearing seat is connected with a plurality of rotary springs, and the other ends of the rotary springs are connected with a driven bearing disc; the driven bearing disc is provided with a driven friction plate; and the driven friction plate and the driving friction plate are alternately connected. The variable resistance dissipative energy absorber has the performance of automatic change according to the impact energy amount of an external load, has strong reliability and large energy absorption capacity, and can fully, effectively and timely avoid the occurrence of free-sliding accidents.

Description

technical field [0001] The invention relates to an energy-consuming energy absorber, in particular to a variable-resistance energy-consuming energy absorber, which is mainly used in protection devices for sports cars in inclined shafts in the field of mines. Background technique [0002] In the inclined shaft hoisting transportation in the mine field, because the towed vehicle runs on the track slope, when the hoist loosens the rope too quickly and the first gear bar is not locked, a sports car accident may occur. There are also situations such as: when the hoisting wire rope continues to crack, the latch falls off or other load bearing parts are fatigued and fractured, it will also cause a sports car accident. Therefore, the inclined shaft sports car protection device must be equipped in the mine inclined shaft transportation, so that the huge kinetic energy generated by the vehicle due to the rapid decline is buffered by the inclined shaft sports car protection device, and...

AI Technical Summary

Problems solved by technology

If the resistance is set according to the smaller value of the impact value, since the vehicle has a greater potential energy when it falls, if the resistance value is too small, it cannot offset the potential energy generated when the vehicle falls, and accidents may still occur at this time; If the resistance is set at a higher value, the initial impact energy is large, the buffer distance is short, and the destructive force can still be large, which cannot achieve the effect of buffer energy absorption and effectively avoid accidents.

Images