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Onsite electrical detection method for double load capacity of friction type lifting machine system

An electrical detection and elevator technology, applied in elevators, transportation and packaging, etc., can solve the problem of inability to detect and calculate the load.

Active Publication Date: 2015-08-12
王泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a double skip or double cage system, since the torque of the motor at a constant speed only reflects the difference between the two loads, it is impossible to detect and calculate the respective loads in the two cages or skips using this method

Method used

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  • Onsite electrical detection method for double load capacity of friction type lifting machine system
  • Onsite electrical detection method for double load capacity of friction type lifting machine system
  • Onsite electrical detection method for double load capacity of friction type lifting machine system

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Embodiment Construction

[0005] The present invention provides an automatic control system and an electric transmission system using a friction hoist. Through precise control, the hoist operates under a specific working condition, records the motor torque and the speed of the drum, and calculates the double cage or double skip. respective loads. It is characterized in that: firstly, after the hoist is hung with a rope, it is empty-loaded, the speed curve is precisely controlled, and the speed is uniformly accelerated to a stable hoisting speed, and it runs back and forth in the wellbore, recording the motor torque and the speed of the drum, and obtains the motor output when the hoist is running at forward and reverse speeds. Two different static tension differential moments and hoist system mass (including the displacement mass of motor, drum, sky wheel or guide wheel, cage or skip and the quality of the head and tail rope); after that, the hoisting system is loaded, through precise Control the electr...

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Abstract

The invention provides an onsite electrical detection method for double load capacity of a friction type lifting machine system. A lifting machine is no-load, a speed curve is accurately controlled, stable lifting speed is achieved through uniform acceleration and motor toque and roller speed are recorded so that a no-load operation static tension difference torque value is obtained and the mass sum of the lifting machine system is calculated; and the lifting system carries different loads, the speed curve is accurately controlled, stable lifting speed is achieved through uniform acceleration and motor toque and roller speed are recorded so that respective load capacity of two cages or skips is calculated through formulas. The beneficial effects of the onsite electrical detection method are that different load capacities of being up to dozens of tons of the two cages or the skips of the friction type lifting machine are accurately detected and calculated by utilizing an onsite existing lifting machine automatic control system and an electrical transmission system without arrangement of any additional equipment so that the measuring method is accurate, simple and reliable.

Description

Technical field [0001] The present invention relates to the field of on-site electric weighing of the respective loads of mine friction hoists (including tower hoists and floor hoists), double skips or double cages, in particular to an automatic control system and an on-site use of a mine friction hoist system An electrical method for detecting the respective loads of two cages or skips by the motor drive system. Background technique [0002] There are two types of transportation and loading devices for the mine friction hoist system: one is a single cage or a single skip (one side is a cage or a skip, and the other is a counterweight); the other is a double cage or a double skip. form (both sides are in the form of cages or skips). For a single cage or a single skip, since the mass of the counterweight on the other side is fixed, the load of a single cage or a single skip can be easily calculated from the motor torque at a constant speed. However, for a double-skip or dou...

Claims

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Application Information

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IPC IPC(8): B66B5/00
CPCB66B5/00
Inventor 王泉
Owner 王泉
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