Pressure bearing plate for coal mine and manufacturing method thereof

Abstract

The invention relates to a coal mine pressure bearing plate and a manufacturing method thereof, the coal mine pressure bearing plate comprises an ultra-high molecular weight polyethylene plate body, a clamping block is arranged in the middle of a first side edge of the plate body, an opening matched with the clamping block is formed in a second side edge opposite to the first side edge, a plurality of grooves are formed in the back surface of the plate body, and the grooves are matched with the clamping block. The bearing plate is made of ultra-high molecular weight polyethylene with the molecular weight not lower than 350,000 and double-resistance master batch in a mold pressing mode according to the proportion not larger than 3: 2. When in use, the pressure-bearing plates are directly spliced on the road surface, and after splicing is completed, a support transfer trolley can pass through the pressure-bearing plates. Compared with the prior art, the method has the advantages that the existing hardening process required by cement is omitted, the splicing operation is fast and convenient, the pavement can be hardened more efficiently, the coal mining operation is accelerated to a certain extent, and the coal mining cost is saved.

Description

technical field [0001] The invention relates to a pressure-bearing plate for coal mines and a manufacturing method thereof, in particular to a pressure-bearing plate used for laying roads in coal mining and a method for manufacturing the pressure-bearing plate, belonging to the field of coal mining operations. Background technique [0002] In the actual production process of coal mines, the situation is very complicated. In some roadways, under strong impact ground pressure, the road surface will be seriously deformed, and various protrusions and depressions will occur. There are also small roadways with low frequency of use, and the road surface has not been hardened at all. After a fully mechanized mining face is completed, the fully mechanized mining support needs to be transported to the next working face with a support transfer vehicle for coal mining operations. Generally, the weight of a fully mechanized mining support is 70 to 80 tons, and the weight of the support...

AI Technical Summary

Problems solved by technology

However, the weight of the steel plate itself is too heavy, and workers cannot complete the operation with bare hands without auxiliary tools. After laying, the steel plate is easy to shift when the support transfer vehicle passes by, and the position needs to be adjusted repeatedly to ensure safe passage, which affects the moving. reverse progress

Images