Main speed reducer for seamless steel tube mandrel retaining

Abstract

The invention discloses a main speed reducer for seamless steel tube mandrel retaining. The main speed reducer comprises a box body and multiple transmission devices arranged in the box body, wherein each transmission device comprises an independent-drive motor, an input shaft, an output shaft and bearing blocks containing bearings, two ends of the input shaft and two ends of the output shaft are supported by the bearings respectively, gears in meshed transmission are arranged between the input shaft and the output shaft, the input shaft is arranged on the periphery of the output shaft, and the output shaft is arranged in the middle of the box body. The main speed reducer is widely applied to a production line in the steel tube industry, has the advantages of compact structure, small size, light weight, low noise, high transmission efficiency and long service life, can save manpower and material resources and can facilitate mounting and transportation.

Description

technical field [0001] The invention relates to a gear reducer, in particular to a seamless steel pipe mandrel limiting main reducer used in a mandrel limiting device of a seamless steel tube continuous rolling mill. Background technique [0002] The seamless steel pipe mandrel stop main reducer is generally used in the mandrel stop device of the seamless steel pipe continuous rolling mill. The main function is to drive the mandrel stop device to act on the rolling steel. There are four sets of transmissions in the box, and each transmission is driven by an independent motor. However, in actual use, the installation position of the input shaft and output shaft of each transmission of the above-mentioned traditional structure of the reducer is often different. There is a defect of not being compact enough, so it affects the operation of the entire reducer, which brings a series of adverse effects. Contents of the invention [0003] In view of this, the purpose of the prese...

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Problems solved by technology

[0002] The seamless steel pipe mandrel stop main reducer is generally used in the mandrel stop device of the seamless steel pipe continuous rolling mill. The main function is to drive the mandrel stop device to act on the rolling steel. There are four sets of transmissions in the box, and each transmission is driven by an independent motor. However, in actual use, the installation position of the input shaft and output shaft of each transmission of the above-mentioned traditional structure of the reducer is often different. There are defects that are not compact enough, so it affects the operation of the entire reducer, which brings a series of adverse effects

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