Non-contact coal mine conveyor belt deviation protection method and device

Abstract

The invention discloses a deviation protection method and device for a rubber belt of a non-contact coal mine conveyor. Two infrared receivers are mounted on longitudinal beams on the two sides of the conveyor through lower fixed frames correspondingly. The middle portions of two infrared transmitters are rotationally connected with the lower ends of two vertical rods correspondingly. The upper ends of the two vertical rods are connected with a cross rod. The upper end of the middle of the cross rod is connected with the lower end of a suspender. A controller is arranged on the suspender. A connecting plate is arranged at the upper end of the suspender and fixed to a tunnel top wall over the rubber belt of the conveyor through a connecting piece. The upper portions of the two vertical rods are each provided with a wire coil. A wire of each infrared transmitter passes through the wire coil on the same vertical rod and then is connected with the controller. A splayed structure is formed by the two infrared transmitters and the two infrared receivers. According to the deviation protection method and device, the protection action is sensitive and reliable, the service life is prolonged, the production cost is reduced, and work efficiency is improved.

Description

Technical field: [0001] The invention relates to coal transportation equipment in coal mines, in particular to a non-contact coal mine conveyor belt deviation protection method and device. Background technique: [0002] According to Yongmei Company's "Coal Mining Mining Electromechanical Refined Management Standards", the deviation protection installation requirements: the deviation protection of the fixed belt conveyor (the tail of the machine is fixed for a long time) should be used in pairs, and the head and tail of the machine should be used in pairs. Install one set for each, 10-15m away from the nose and tail of the machine. When the belt conveyor has a large slope change (when the slope exceeds 20°), one set should be installed at the position of the slope change; move the belt conveyor The deviation protection only needs to install one set on the nose. The deviation protection application special bracket is fixed on the large frame or longitudinal beam of the belt c...

AI Technical Summary

Problems solved by technology

At present, the belt team of Chensilou Coal Mine has installed more than 40 sets of deviation protection. According to the statistics of spare parts consumption in 2014 and 2015, it is found that 48 sets of deviation protection are replaced every year on average, accounting for the proportion of the consumption of electronic control parts of belt conveyors. 8.22%, high input cost

In order to improve the performance and service life of the deviation protection of the conveyor, ensure the safe production of the mine, and reduce the investment in production costs, the engineers and technicians of the belt team have carefully summarized and analyzed and found that: ①The deviation protection currently used is all contact type. When the deviation occurs, the tape touches the deviation protection bar. According to regulations, the deviation protection can only be activated when the positive force at the midpoint of the deviation protection bar is 20-100N. If the deviation of the tape does not reach the protection action value, the tape will always Grind the deviation protection rod, wear out the deviation protection rod, and the deviation protection cannot work normally; ②The current deviation protection is internally controlled by the action of the micro switch, and the deviation protection is poorly sealed. The contact of the micro switch is easy to Oxidation causes poor contact and short service life

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