A scraper machine tail drum

Abstract

The invention discloses a scraper tail drum which is provided with a barrel structure with a bearing hole. The scraper tail drum comprises a middle cylinder and outer drums with chain grooves, wherein the middle cylinder is of a hollow cylinder, the outer drums which have diameters larger than that of the middle cylinder and are provided with the chain grooves and are arranged at two ends of the middle cylinder, and the middle cylinder, the outer drums and the chain grooves are integrally cast at a time together with the bearing whole. The integrated cast is of a lost foam casting. The material is of iron alloy which comprises chemical components percentage by weight: 0.01-0.15 of carbon, 0.2-0.5 of silicon, 0.4-1.0 of manganese, 0.5-2.0 of nickel, 10.0-12.0 of chromium, 0.2-0.3 of vanadium, 0.01-0.02 of phosphorus, 0.01-0.02 of sulphur and the rest of ferrum. The scraper tail drum has the beneficial effects of being simple to machine, saving the machining time, lowering the machining difficulty, being simple in structure, fewer in consumable materials, lower in cost and lighter in weight; the materials have high high-temperature creep rupture strength, good oxidation resistivity, good thermal stress and stable and reliable mechanical property; and the machining process is safe and reliable, and accordingly the machining failure possibility and the consequent cost are reduced.

Description

technical field [0001] The invention relates to a scraper machine used in coal mines, in particular to an integral tail drum of the scraper machine. Background technique [0002] The tail roller is one of the main accessories of the scraper conveyor. In the prior art, when assembling and processing the tail drum, it is necessary to assemble and weld the middle drum and the two outer drums together after machining, so that the processed tail drum has cumbersome processing, long construction period, Disadvantages such as high cost, many consumables, and poor structural stability. Simultaneously, because the tail drum in the prior art, used material is common ferroalloy generally, its mechanical performance is not stable enough, reliable, has a strong impact on use. Contents of the invention [0003] In view of the above problems, in order to overcome the deficiencies of the prior art, the present invention provides an integral tail drum of scraper machine, which simplifies...

AI Technical Summary

Problems solved by technology

In the prior art, when assembling and processing the tail drum, it is necessary to assemble and weld the middle drum and the two outer drums together after machining, so that the processed tail drum has cumbersome processing, long construction period, Disadvantages such as high cost, many consumables and poor structural stability

Simultaneously, because the tail drum in the prior art is generally made of ordinary iron alloy, its mechanical properties are not stable and reliable enough, which seriously affects the use

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