Air-cooled grading cylinder type permanent magnet eddy current descent control device

Abstract

An air-cooled graded cylinder type permanent magnet eddy current descent control device is provided with a base, a shell, a graded retarding device and a speed increasing device, wherein the graded retarding device and the speed increasing device are arranged in a cavity of the base and the shell, the graded retarding device comprises a conductor rotor, a permanent magnet stator and a rotor drivenshaft, the permanent magnet stator is equally divided into four parts according to the circumference, each part is an independent permanent magnet stator sliding block, and the permanent magnet stator sliding blocks are connected with stator sliding grooves formed in a stator shaft. The stator shaft is fixed to the shell. Permanent magnets are arranged on the circumferences of the permanent magnet stator sliding blocks. The speed increasing device comprises a driving gear, a driven gear, a rope rotating wheel and a rotor main shaft, the driven gear is fixed to the rotor driven shaft, and thedriving gear and the rope rotating wheel are fixed to the rotor main shaft. The permanent magnet stator achieves the purpose of graded braking and slow descending according to the number of descendingpeople through the arrangement of the sliding blocks, the structure is compact, and the permanent magnet conductor coupling structure for braking generates stable magnetic force, is not prone to fail, has no physical friction loss, and is high in reliability, applicability and use convenience.

Description

technical field [0001] The invention belongs to an escape device for a high-rise building, and particularly designs an air-cooled graded cylinder type permanent magnet eddy current descender. Background technique [0002] With the rapid development of the country's economy, high-rise buildings are gradually increasing. When disasters such as high-rise fires or earthquakes occur, high-rise escape devices can help trapped people escape quickly, so high-rise escape devices are also widely popularized. At present, escape devices for high-rise buildings include centrifugal friction type, intermittent impact type, and hydraulic damping type, but the existing escape devices still have deficiencies in the stability of the falling process and the failure rate of equipment. [0003] In Part 1 of the National Compulsory Standard "Building Fire Escape and Refuge Equipment": Equipment Guidelines, it is required that the escape descent device should be equipped with a standard of 20 peopl...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an air-cooled graded cylindrical permanent magnet eddy current descender, which solves the problem that the existing descender has a fixed bearing mass and cannot be adjusted in stages

[0006] Another purpose of the present invention is to solve the problem that the existing slow descent device takes in the rope slowly and needs to overcome the slow speed work in the process

[0007] Another purpose of the present invention is to solve the problems of high failure rate and unstable speed in the descending process of existing descending devices

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