Mine hoist s7-300 electric control protection test method

A mine hoist, protection test technology, applied in the direction of elevators, transportation and packaging, etc., can solve problems such as management blind spots, and achieve the effect of avoiding mechanical impact and ensuring safety

Active Publication Date: 2016-03-09
张国庆
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not meet the provisions of Article 391 of the "Coal Mine Safety Regulations" that "every part of the lifting device... the motor and control equipment, as well as various protection and locking devices, etc., must be inspected once a day by full-time personnel...", there is Management blind spots

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The PLC electric control protection test of the mine hoist can be divided into two categories.

[0042] One category is the items that can be tested directly. This part of the items refers to the protection of external hardware, such as hardware anti-overwinding protection, hardware deceleration function protection, brake gap protection, loose rope protection, full warehouse protection, depth indicator failure protection, over load and undervoltage protection. In some hoists, the "overload and undervoltage" protection in PLC electronic control adopts comprehensive microcomputer protection. For this configuration, you can check whether the fixed value and time limit value in the annual corresponding electrical test protection setting report of the mine meet the requirements. Turn the hardware overwinding switch of the depth indicator from the "closed" position to "open", the safety circuit will act, and the hardware anti-overwinding protection will be effective, otherwi...

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PUM

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Abstract

The invention discloses an S7-300 electric control protection comprehensive test technology of a mine hoist, which belongs to a research scope of a novel theory and a novel method of safety production in energy source and environment science and belongs to an underground operating personnel management technology and a safety production technology for a coal mine in industry (energy source). According to the S7-300 electric control protection comprehensive test technology of the mine hoist, disclosed by the invention, the requirement on detection and protection in every day according to Coal Mine Safety Regulation is met; the safe reliability of a PLC (Programmable Logic Controller) electronic control system of the mine hoist can be judged, and serious accidents are prevented from happening; and the requirement on electrical control PLC development of the mine hoist is conformed; and by utilizing related software and the combination of three test methods, i.e an on-line dynamic test for changing a preset value, an on-line static test for setting a variable list and an off-line static test for simulating the software, all hardware and software which are electrically controlled by the PLC of the mine hoist are subjected to a comprehensive test, and the mechanical shock on the mine hoist is prevented to the maximum.

Description

technical field [0001] "Mine Hoist S7-300 Electric Control and Protection Comprehensive Test Technology" belongs to the research scope of new theories and new methods of safety production in energy and environmental science, and also belongs to the management technology and safety production technology of coal mine underground operators in industry (energy). Background technique [0002] 1. Basic concepts [0003] (1) Basic concepts [0004] A. Mine hoist [0005] Mine hoist is mainly composed of motor, reducer, reel (or friction wheel), braking system, electric control system, etc. It is a large fixed equipment integrating mechanical, hydraulic and electrical technologies. The reel is driven by an AC or DC motor, and the steel wire rope on the reel drives the container to lift personnel and equipment, lift coal, gangue and lower materials in the shaft. The safety of its operation not only affects the production of the mine, but also directly involves the life safety of m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/02
Inventor 张国庆
Owner 张国庆
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