Braking system for downward belt conveyor

Abstract

The invention discloses a dual-braking system for a downward belt conveyor. The dual-braking system comprises a belt conveyor driving drum shaft 1, a hydro-viscous brake 4, a propulsion oil cylinder 8, a hydro-viscous brake shaft 9, a first throttling valve 14, a lubricating oil pump 18, a pressure oil pump 21, a belt conveyor speed reducer high-speed shaft 23, an oil tank 26, a second throttling valve 27, a disc brake braking disc 2, a disc brake braking head 3, a pressure reducing valve 11, a liquid control reversing valve 13, a first electromagnetic reversing valve 16, a second electromagnetic reversing valve 25, a second liquid control reversing valve 28, a third liquid control reversing valve 29 and a third electromagnetic reversing valve 30. The downward belt conveyor uses the hydro-viscous brake 4 as a braking device, meanwhile, a disc brake is added, the combined effect of the lubricating oil pump 18 and the pressure oil pump 21 is combined, the downward belt conveyor is enabled to respectively reach the braking effect under the normal condition and the power failure condition, the occurrence of runaway accidents caused by braking failure is avoided, and the reliability of the dual-braking system for the downward belt conveyor is further improved.

Description

technical field [0001] The invention relates to a braking system for an underrun conveyor. Background technique [0002] The down-belt conveyor is a conveying device that transports materials from a high place to a low place. Because it can make full use of terrain features and reduce equipment investment, it is more and more used in underground roadways of mines. , mine surface transportation system, open pit mining field and mineral processing plant and other fields. [0003] There will be two problems in the working process of the down-conveyor belt conveyor: one is that overspeed will occur during the transportation process, and the speed will become faster and faster, and eventually the belt conveyor will lose control, resulting in a speeding accident; the other is that during the working process If the braking system cannot respond quickly during a sudden power failure, the material on the conveyor belt will drive the conveyor belt down, and the speed will become fast...

AI Technical Summary

Problems solved by technology

[0003] There will be two problems in the working process of the down-conveyor belt conveyor: one is that overspeed will occur during the transportation process, and the speed will become faster and faster, and eventually the belt conveyor will lose control, resulting in a speeding accident; the other is that during the working process If the braking system cannot respond quickly during a sudden power failure, the material on the conveyor belt will drive the conveyor belt down, and the speed will become faster and faster, which will also lead to a speeding accident

Although the hydraulic viscous brake overcomes the disadvantage that the temperature of the disc brake cannot be controlled, it requires electrical control, and its braking time cannot be automatically controlled in the case of a sudden power failure

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