Press-down reduction box for four-roller reversible tungsten-molybdenum hot rolling mill

Abstract

The invention discloses an press-down reduction box for a four-roller reversible tungsten-molybdenum hot rolling mill. An oil stopping ring is arranged in a lower box body of the reduction box, and the oil stopping ring is upwards in butt joint with a lower bearing check ring. The lower bearing check ring is fixed connected with a worm wheel shaft, and the circumference of the lower end of the worm wheel shaft is sleeved with a worm wheel lower bearing. The worm wheel lower bearing is located on the lower bearing check ring, and a seal is arranged between the oil stopping ring and the lower bearing check ring. An oil returning hole is formed in the bottom of the lower box body of the reduction box, and the upper port edge of the oil returning hole is lower than the lower edge of the seal. A sleeve cup is fixedly installed on an upper box cover of the reduction box, and a worm wheel upper bearing is sleeved with the sleeve cup. The worm wheel upper bearing is connected with the upper portion of the worm wheel shaft in a sleeving mode, and an upper bearing check ring is arranged at the upper end of the worm wheel upper bearing. An upper end cover is arranged at the upper end of the sleeve cup and is provided with a protection cover. The worm gear upper bearing is in loose fit with the worm wheel shaft. The press-down reduction box does not leak oil and is convenient to demount and mount.

Description

technical field [0001] The invention belongs to the technical field of steel rolling equipment, and relates to a four-roller reversible tungsten-molybdenum hot rolling mill pressing speed reducer. Background technique [0002] The reduction device of the four-roll reversible tungsten-molybdenum hot rolling mill is an important part of the rolling mill. In addition to ensuring the mechanical parameters of the reduction reducer to meet the requirements of the rolling mill, since its lubrication is lubricated with thin oil, it must also have good sealing performance. It will cause oil leakage from the reducer and the pressing device. Due to the high temperature of the rolled slab, the temperature of the slab during rolling is above 1050°C. After the oil leaks, it will cause a fire, which will not only affect production, but may also cause serious problems. In addition, the deceleration also requires easy disassembly and easy installation and maintenance. [0003] The deficienc...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a four-roller reversible tungsten-molybdenum hot-rolling mill pressing speed reducer, which solves the prob...

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