A general-purpose spinning type pipe end expansion device for large-diameter steel pipes

A spinning type, large-diameter technology, applied in the field of steel pipe diameter expanding equipment, spinning steel pipe end expanding equipment, can solve the problems of poor versatility, high development cost, frequent replacement, etc.

CN103600002BActive Publication Date: 2016-08-24CANGZHOU SPIRAL STEEL TUBES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-08-24

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Abstract

The utility model relates to a general spinning type pipe end expansion device for large-diameter steel pipes, which is used to solve the problem of poor universality of the existing pipe end expansion equipment. It consists of a main machine and a supporting roller. The main machine includes two parts arranged symmetrically on the left and right, and each part is composed of a base slide rail, a driving roller assembly, a spinning roller assembly, a main frame and a main frame position adjustment mechanism. The base slide rail is fixed on the level ground, the main frame is equipped with the position adjustment mechanism of the main frame, and the guide slider matched with the base slide rail is arranged at the bottom of the main frame, and the driving roller assembly and the spinning roller assembly are installed on the on the host frame. The invention has the characteristics of good versatility, strong practicability and convenient debugging, and can be used for the expansion treatment of steel pipe ports of different pipe diameters, which can not only ensure the dimensional accuracy of the steel pipe ports, but also improve the working efficiency.
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Description

technical field

[0001] The invention relates to a steel pipe diameter expanding device, in particular to a spinning type steel pipe end diameter expanding device, which belongs to the technical field of metal non-cutting processing. Background technique

[0002] Spiral pipes are mainly used for oil and natural gas pipelines. It is made by rolling low-carbon structural steel or low-alloy structural steel strips into tube blanks according to a certain helix angle (forming angle), and then welding the pipe seams. Yes, in order to ensure the dimensional accuracy of the steel pipe butt joint during pipeline construction, after the welding, non-destructive inspection of weld seam and hydrostatic pressure test of the spiral pipe are completed, the diameter of the end of the steel pipe must be expanded.

[0003] Existing steel pipe diameter expanding equipment generally uses a hydraulic cylinder to drive the multi-edge wedge-shaped cylinder to move axially, thereby pushing the split...

Examples

Embodiment Construction

[0023] see figure 1 The spiral pipe (steel pipe 1) is made by rolling low-carbon structural steel or low-alloy structural steel strip into a pipe blank according to a certain helical angle, and then welding the pipe seams. In order to ensure the butt joint of steel pipe 1 during pipeline construction The dimensional accuracy is high. After the non-destructive testing of the weld seam and the hydrostatic pressure test are completed, the diameter of the steel pipe end 1-1 must be expanded.

[0024] see figure 2 , image 3 , Figure 7 , the present invention consists of a main machine 2 and a support roller 3, the main machine 2 includes two parts symmetrically arranged left and right, each of which consists of a base slide rail 2-3, a driving roller assembly, a spinning roller assembly, and a main frame frame 2-3. 5 and the position adjustment mechanism of the main frame. The main frame 2-5 is assembled with the position adjustment mechanism of the main frame. A guide slider...