Onsite electric testing method for important mechanical parameters of friction type elevator system

Abstract

The invention provides an onsite electric testing method for important mechanical parameters of a friction type elevator system. The method comprises the steps: when a rope is not hung, an electric transmission system of a motor is precisely controlled, the motor and a roller are accelerated at a constant accelerated speed to reach a rated speed, the torque of the motor and the speed curve of the roller are recorded and the sum of rotational inertia of the motor and the roller is calculated; after the rope is hung, the system runs to and fro at the rated speed, records the torque, the speed and the running displacement and calculates a mass difference between special loads at two sides of the roller, a mass difference per unit length between a first rope and a tail rope; finally, the system is accelerated at the constant accelerated speed to reach a rated speed value, records the torque and the speed and calculates the sum of an equivalent mass of a hosting sheave or a guide sheave and an suspended mass of the elevator. The onsite electric testing method has the beneficial effects that the onsite present electric equipment is utilized to precisely detect important parameters of mechanical equipment with mass of dozens of tons and rotational inertia of hundreds of thousands kgm2; any additional equipment is not arranged and the measuring method is accurate, simple and reliable.

Description

Technical field [0001] The invention relates to the field of on-site detection and inspection of important mechanical parameters of mine friction hoists (including shaft tower type and floor type), in particular to an on-site hoist automatic control and motor drive system detection of the motor and motor in the friction hoist system The sum of the moment of inertia of the drum, the quality difference of the sum of the specific first rope section suspended on both sides of the drum and the quality of the cage (or skip), the quality difference of the unit length of the head and tail ropes, the wind resistance moment of the shaft, the quality of the steel wire rope and the sky wheel (or The method of important mechanical parameters such as the sum of the displacement mass of the guide wheel and the mass of the cage (or skip). Background technique [0002] Mine friction hoist system includes motor drive system, hoist control system, hydraulic brake system, motor, drum, sky wheel...

AI Technical Summary

Problems solved by technology

After the equipment is transported to the mine site, due to the limited site conditions, parameters such as huge mass and moment of inertia cannot be effectively weighed and tested, so it is impossible to know whether the parameters of the hoisting system after manufacture are different from the design parameters

If there is a major discrepancy, it may bring safety hazards or accidents to the entire lifting system.

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