Integral passive broken belt protection device and method for belt conveyor

Abstract

The invention discloses an integral passive broken belt protection device and an integral passive broken belt protection method for a belt conveyor. The device mainly consists of a rack and an upper self-locking wedge block, an upward overturning mechanism, a downward overturning mechanism, a lower self-locking wedge block and an overturning link gear which are arranged on the rack. A belt of the conveyor is controlled by the overturning link gear arranged between the upward and downward overturning mechanisms; when the conveying belt normally operates, the overturning mechanisms are kept balanced under the action of counter weights and a pressing force of the conveying belt; and when the conveying belt is broken, the pressing force of the conveying belt disappears and the balance is broken, and thus, a counter weight plate and a counter weight block are deflected to generate the torque to enable the upward and downward overturning mechanisms to be respectively self-locked with the upper and lower self-locking wedge blocks, so that the broken belt is clamped and braked. The integral passive broken belt protection device has a simple structure, is convenient to use, has high response speed, is simple to reset, is reliable to capture, is convenient to maintain, is particularly suitable for integral binding cloth of the rubber belt of the mine underground belt conveyor and is also suitable for other belt conveyors.

Description

technical field [0001] The invention relates to the technical field of belt conveyors, in particular to an integral passive broken belt protection device and method for belt conveyors suitable for underground coal and rock transportation in coal mines. Background technique [0002] Belt conveyors are widely used in mining, metallurgy, chemical industry, light industry, coal, ports and many other fields. Large-scale, high-speed, and high-yield production sites have increasingly high technical requirements for belt conveyors. The previous broken belt protection device has low reliability, which is a major bottleneck hindering the increase in productivity. It affects the efficiency of underground coal mining. Even worse. At present, the most widely used broken belt arresting devices in the market are wedge-type broken belt catchers and intelligent speedometer-controlled broken belt catchers. The two make up for some shortcomings of the line contact broken belt protection devi...

AI Technical Summary

Problems solved by technology

The two make up for some shortcomings of the line contact broken belt protection device, but the former cannot be used for the lower belt conveyor, there are malfunctions, and the inconsistency between the catchers makes the catch area small, while the latter is not easy to repair Maintenance and initial investment are large; during normal operation, the wedges or rollers of the two occupy a certain space on the conveyor belt, which will inevitably affect the transportation volume; when the belt breaks, the clamping force of the wedges or rollers on the side of the conveyor belt The bigger and bigger, the uneven force on the conveyor belt may cause the longitudinal tear of the conveyor belt

In addition, the backstop idler is also used for broken belt protection, but it is still not suitable for the down belt conveyor

For fields such as underground coal transportation where the operating space is narrow and major safety accidents are prone to occur, there is currently no very reliable broken belt protection device to choose from

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