Middle trough with pin rails on two sides

Abstract

The invention discloses a middle trough with pin rails on two sides. The middle trough comprises an insertion board ledge, a middle plate, a bottom plate and a baffle ledge, which are connected into a whole. A rail support is arranged outside the baffle ledge, and a pin rail is connected to the rail support. An insertion board is arranged on the insertion board ledge. Offset pin rails are arranged outside the insertion board ledge, and form a coal mining machine driving traveling supporting rail. Each offset pin rail comprises a connecting seat and rail teeth, which are integrated. The connecting seats are connected with a trough body. A plurality of linearly arranged rail teeth are uniformly arranged along the length direction of each connecting seat on the connecting seat. The pin rails are arranged on the two sides of the trough body, the offset pin rails outside the insertion board ledge form the coal mining machine driving traveling supporting rail, and the pin rail outside the baffle ledge guides the traveling of a coal mining machine. The machine surface of the coal mining machine is low, and has a large coal delivery space, so that the problem of clamping between a driving wheel and the pin rail during the work of the coal mining machine can be effectively solved, the coal mining machine stably and reliably runs, and is low in failure rate, and improvement in the coal mining efficiency of fully-mechanized excavation of an extremely thin coal seam is facilitated.

Description

Technical field [0001] The invention belongs to the technical field of the middle groove of a scraper conveyor, and specifically relates to a middle groove of a scraper conveyor used in an ultra-thin coal seam heald. Background technique [0002] According to the thickness of coal seams in my country's coal mines, those with a thickness of 0.8m-1.3m are thin coal seams, and those with a thickness of less than 0.8m are extremely thin coal seams. Thin and ultra-thin coal seams are difficult-to-mine coal seams. The proven recoverable reserves of this part of the coal seams are about 6 billion tons, accounting for about 20% of the country’s total coal storage. Among them, the ultra-thin coal seams account for 14% of the hard-to-mine coal seams. %. Difficult-to-mine coal seams have extremely high requirements for the height of fully mechanized mining equipment, making mining difficult, and the current mining output is only 10% of the total output. In order to improve the energy reco...

AI Technical Summary

Problems solved by technology

When the walking part of the shearer is pulling the shearer forward, due to the influence of the offset of the center of gravity, the driving wheel and the pin rail of the scraper often get stuck, the walking resistance is large, the operation is unstable, and the long-term operation is likely to cause damage to the equipment. Damage, cause failure, not only high production cost, but also low work efficiency

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