High-strength green sand pouring system of oversized traction sheave shell

Abstract

The invention discloses a high-strength green sand pouring system of an oversized traction sheave casing, the traction sheave casing is provided with an upper plate surface part, a front side plate surface part, a left side plate surface part, a right side plate surface part and a rear side plate surface part, and the upper plate surface part extends downwards to form a thin-wall circular ring outer shell, a thin-wall circular ring inner shell and a central shaft cylinder; the pouring system comprises a forming cavity profiling a traction sheave shell, a hot riser for injecting molten iron into the forming cavity, a plurality of flow gate water inlet pieces, a plurality of exothermic risers and a plurality of auxiliary flow gate water inlet pieces. A flow gate of the hot riser is arranged at the middle height position of the front side plate surface part; the auxiliary flow gate water inlet piece comprises a first set of auxiliary water inlet pieces communicating with the thin-wall circular ring outer shell and the thin-wall circular ring inner shell, and a second set of auxiliary water inlet pieces communicating with the thin-wall circular ring inner shell and the center shaft cylinder. According to the invention, the casting of a casting with a large-size high-fall structure is realized, the casting and mold filling path is greatly shortened, the mold filling time is shortened, and the problems of sand hole and hot node shrinkage are effectively solved.

Description

【Technical field】 [0001] The invention belongs to the technical field of casting technology, and in particular relates to a high-strength green sand pouring system for an oversized traction wheel casing. 【Background technique】 [0002] The traction machine is the power equipment of the elevator, also known as the elevator host; its function is to transport and transmit power to make the elevator run, and each elevator will be equipped with a traction machine. At present, there is a super-sized traction machine with a casing size of 860mm in length * 840mm in width * 450mm in height. This traction machine can meet the urgent demand for lightweight, high-power and high-speed traction machine casings for high-rise residential elevators in the future. And it has the advantage of low manufacturing cost compared with foreign countries. With the urbanization process and economic development at home and abroad, the demand for research and development of transmission and braking inte...

AI Technical Summary

Problems solved by technology

However, the size and height of the casting of the traction wheel casing far exceed the size of the general automatic line sand box, especially for the casting of green mold sand. Due to such a large height difference of the product, it is easy to cause problems of trachoma and hot joint feeding. Project development has invisibly increased the difficulty

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