Spring pressure-assisted cutting fixing device with double cutting torches and application method of spring pressure-assisted cutting fixing device

Abstract

The invention discloses a spring pressure-assisted cutting fixing device with double cutting torches and an application method of the spring pressure-assisted cutting fixing device, which are quite suitable for cutting grooves of petals of spherical tanks and can simultaneously carry out one-step groove forming cutting for two groove surfaces. The fixing device comprises a transverse adjusting rod, a cutting torch fixing sleeve and a supporting guide wheel, the transverse adjusting rod is connected with an arc seam cutting adjusting mechanism, the cutting torch fixing sleeve is mounted on a cutting torch positioning mechanism, the supporting guide wheel is mounted in a supporting guide wheel mounting mechanism, the arc seam cutting adjusting mechanism is fixed onto a spring pressure assisting mechanism by a bolt, and the cutting torch positioning mechanism and the supporting guide wheel mounting mechanism are mounted on the lower portion of the spring pressure assisting mechanism. The application method includes cutting an upper groove angle beta 1 by the aid of a positioning cutting torch; and cutting a lower groove angle beta 2 by the aid of an adjustable cutting torch in the movable cutting torch fixing sleeve, leading the positioning cutting torch and the adjustable cutting torch to realize cutting simultaneously, and forming an X-shaped cutting line on a spherical shell plate. Owing to spring pressure assistance, the supporting guide wheel always contacts with the steel spherical shell plate along with change of the shape of a cutting plate.

Description

technical field [0001] The invention relates to an electric welding cutting and fixing device, especially a spring-assisted pressure-assisted double cutting torch cutting and fixing device and its use method, which is very suitable for cutting the bevel of spherical tank flaps, and can perform one bevel on two bevel surfaces at the same time. Form cut. Background technique [0002] Steel spherical storage tank is an A3-grade pressure vessel for storing various gases, liquefied gases and liquids. Compared with other storage containers of the same volume, it has the advantages of small surface area, light weight, uniform force, small footprint, and convenient construction. Cost saving and other advantages. But for the cutting of spherical shell plates, most of the domestic production units still stay at the technical level of single torch cutting. The biggest disadvantage of the single torch cutting technology for cutting the X groove of the spherical shell plate is the low ...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a spring-assisted pressure double cutting torch cutting and fixing device and its use method, which can overcome the defects of the existing device, such as bulky structure, heavy slider weight, large frictional resistance, and unstable distance between the cutting torch and the steel plate

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