Mandrel screw-on machine pre-screwing and auxiliary machine device

Abstract

A mandrel screw-on machine pre-screwing and auxiliary machine device comprises a PLC control system and further comprises a rotating pre-screwing mechanism, a double-carrier-roller mechanism, pull rod driving mechanisms and supporting carrier roller mechanisms, wherein the rotating pre-screwing mechanism and the double-carrier-roller mechanism form a pre-screwing mechanism assembly, inlet and outlet mechanism assemblies which are respectively composed of each pull rod driving mechanism and a plurality of sets of the supporting carrier roller mechanism are arranged at the two ends of the pre-screwing mechanism assembly respectively, the pull rod driving mechanisms are connected with the plurality of sets of supporting carrier roller mechanisms through pull rods, and the rotating pre-screwing mechanism, the double-carrier-roller mechanism, the pull rod driving mechanisms and the supporting carrier roller mechanisms are all connected with the PLC control system. The mandrel screw-on machine pre-screwing and auxiliary machine device solves the problem that imported equipment is relied at present, fills in gaps in mandrel screw-on equipment localization, and particularly solves the technical problem that a mandrel with a phi 460mm large diameter can not be screwed in a standard mode.

Description

technical field [0001] The invention belongs to mechanical equipment in the field of petroleum drilling and metallurgy, mainly relates to supporting equipment in a hot rolling area of ​​a steel pipe continuous rolling line, and in particular to a mandrel screwing machine pre-twisting and auxiliary equipment. Background technique [0002] As an essential material for oil drilling, refining, metallurgy, construction and other industries, steel pipes are used more and more. Especially in recent years, with the improvement of hot-rolled steel pipe processing technology in my country, the export volume of steel pipes has soared. Now Most of the hot rolling production lines in our country adopt continuous rolling tube mills with high production capacity, energy saving, environmental protection, accurate and reliable modern advanced technology control technology. Among them, the mandrel used in the rolling mill is the most important thermal deformation tool, which plays a vital role...

AI Technical Summary

Problems solved by technology

[0003] At present, two methods are commonly used to complete the screwing of mandrel rods up and down in China: using large-scale chain pipe tongs for screwing by manpower; the disadvantage of using this method is that it is time-consuming and laborious, and it is impossible to screw the large-diameter mandrels with huge weight and volume. connection, and often the tightening force cannot meet the requirements, the reliability is poor, and it is easy to trip the mandrel during use, causing serious safety hazards

Another method is to purchase imported mandrel screwing equipment to complete the screwing; although the imported equipment can accurately complete the screwing work, the cost of the equipment is high and the maintenance is difficult

There is no similar equipment product in China, so research and development of a localized mandrel screwing equipment has become a top priority

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