A thin-walled and large-diameter cylinder circle calibration auxiliary device and its auxiliary circle calibration method

Abstract

The invention relates to a thin wall and large diameter barrel roundness correction auxiliary device and an auxiliary roundness correction method thereof. The device comprises a part making contact with a roller shaft on the upper portion or the top of the inner side of a barrel, and a fixing facility used for fixing the part; the device is further provided with a lifting lug; and the roundness correcting auxiliary device can be effectively hoisted through a hoist, inner supporting is provided for the roundness correcting process of the thin wall and large diameter barrel, and it is guaranteedthat the roundness correction process of the thin wall and large diameter barrel is safe and the roundness meets the product manufacturing requirement. The roundness correction auxiliary device has the beneficial effects of being novel in structure, easy to manufacture and convenient to move, is convenient to use and wide in application range, and solves the roundness correcting problem of the thin wall and large diameter barrel.

Description

technical field [0001] The invention relates to an auxiliary device for adjusting the circle of a cylinder, in particular to an auxiliary device for adjusting the circle of a thin-walled and large-diameter cylinder and an auxiliary method for adjusting the circle. Background technique [0002] There are many large-capacity containers in the petrochemical container project. The characteristics of this type of product are large container diameter and thin wall thickness. The maximum diameter of the container ranges from 6000mm to 9000mm, and the wall thickness does not exceed 40mm. In the container manufacturing process, the container body has multiple sections of cylinders assembled and welded. On the one hand, the container body has requirements for the roundness of the cylinders. A regular circular cylinder is required. However, due to the large diameter and thin wall of the container, the cylinder is basically elliptical or irregularly oblate after the longitudinal seam w...

AI Technical Summary

Problems solved by technology

However, due to the large diameter and thin wall of the container, the cylinder is basically elliptical or irregularly oblate after the longitudinal seam welding is completed. It is difficult to correct the circle due to the poor rigidity of the cylinder.

[0003] For example, Chinese patent CN201659174U discloses a thin-walled cylinder shape correction device, which utilizes the multi-lobed tapered movable block and the cone to simultaneously correct the shape and temper the quenched thin-walled cylinder, which can reduce the thin-walled cylinder. The irregular deformation of the cylinder during heat treatment after quenching and tempering, but its disadvantage is that the device structure is complex, and it is not suitable for the calibration of large-diameter cylinders; Chinese patent CN104785580A discloses a cylinder calibration and support mechanism, The machine base and the cylindrical support seat are used for rounding and supporting the cylinder of the gas injection boiler when the reinforcement ring is assembled and welded, but its disadvantage is that it cannot be adapted to the rounding and supporting of the thin-walled and large-diameter cylinder, and it is not convenient Move, when moving, there will be a large error in the calibration circle

[0004] In addition, at present, the crane hook is still mainly used to assist the rounding of the thin-walled and large-diameter cylinder. However, due to the small contact point between the crane hook and the cylinder, it is easy to pull out the dead bend, which affects the product circle calibration.

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