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Fully-mechanized mining face scraper conveyor chain state detection device and method

A state detection device, scraper conveyor technology, applied in the direction of conveyor control devices, conveyors, conveyor objects, etc., can solve the problems that magnetic particle detection cannot realize online detection, cannot meet the needs of production, and the equipment is expensive. Achieve the effect of avoiding production safety hazards, light weight and low price

Active Publication Date: 2019-11-26
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, magnetic particle testing cannot realize online testing, and it is inconvenient to use. The equipment used in acoustic emission and ultrasonic testing methods is expensive, and cannot meet the needs of the current fully mechanized mining face production

Method used

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  • Fully-mechanized mining face scraper conveyor chain state detection device and method
  • Fully-mechanized mining face scraper conveyor chain state detection device and method

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Embodiment Construction

[0030] The specific embodiments of the present invention will be briefly described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those skilled in the art without creative work Examples, all belong to the protection scope of the present invention.

[0031] Figure 1-Figure 2 The preferred embodiment of the present invention is shown, and it is analyzed in detail from different angles.

[0032] Such as Figure 1-2 A chain state detection device for a scraper conveyor in a fully mechanized mining face shown includes a magnetic field generator installed under the chain 8 to magnetize the chain 8 and a magnetic field detection device installed next to the scraper conveyor. The magnetic field generating device includes an adjustable DC source 1 and a multi-turn coil 2 elect...

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Abstract

The invention discloses a fully-mechanized mining face scraper conveyor chain state detection device and method, and relates to the technical field of chain detection. The detection device comprises amagnetic field generation device and a magnetic field detection device. The magnetic field generation device comprises an adjustable direct-current source and a multi-turn coil. The magnetic field detection device comprises a detection probe, a polarizer, an optical fiber circulator, a broadband light source and a photoelectric detector. The detection probe comprises a reflection mirror, a magnetic induction coil and a magneto-optic crystal. The detection probe gets close to a chain through an adjustment support to achieve online detection. According to the fully-mechanized mining face scraper conveyor chain state detection device and method, the scraper conveyor chain is magnetized firstly, mutual inductance is generated between a leakage magnetic field generated by chain defects and themagnetic induction coil of the detection probe, a magnetic signal generated by mutual inductance in the magnetic induction coil is converted into an optical signal in the magneto-optic crystal, the optical signal is then converted into an electrical signal, a state signal of the chain is obtained through signal processing, real-time online detection of the chain can be achieved, it is ensured that a scraper conveyor safely and stably operates, and coal mine production potential safety hazards are avoided.

Description

technical field [0001] The invention relates to the technical field of chain detection, in particular to a chain state detection device and method of a scraper conveyor in a fully mechanized mining face. Background technique [0002] With the continuous improvement of the requirements for the safe and stable operation of coal mine machinery, as the key mechanical equipment on the fully mechanized mining face, the stable operation of the scraper conveyor directly affects the safety and continuity of coal mine production. Since the chain bears the greatest load, more failures in the scraper conveyor occur on the chain. It is necessary to adopt an effective means to realize online detection of the chain. [0003] The working conditions of the scraper conveyor are complicated, and the chain works under high load for a long time, which is prone to failure forms such as wear, cracking, corrosion, and plastic deformation. If the major defects and hidden dangers of the chain can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G19/20B65G43/02
CPCB65G19/20B65G43/02
Inventor 许少毅薛宏宇江红祥李威王禹桥范孟豹杨雪锋陈瑶
Owner CHINA UNIV OF MINING & TECH
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