Spinning-type tube end expanding device commonly applied to large-diameter steel tubes

Abstract

The invention discloses a spinning-type tube end expanding device commonly applied to the large-diameter steel tubes. The spinning-type tube end expanding device comprises a main engine and support rollers. The main engine comprises two portions in left-right symmetrical arrangement. Each portion comprises a base slide rail, a driving roller component, a spinning roller component, a main-engine frame and a main-engine frame position adjusting mechanism. The base slide rails are fixed on the horizontal ground. The main-engine frames are assembled with the main-engine frame position adjusting mechanisms. Guide sliders matched with the base slide rails are arranged at the bottoms of the main-engine frames. The driving roller components and the spinning roller components are mounted on the main-engine frames. The spinning-type tube end expanding device has the advantages of good universality, high practicability and convenience in debugging and can be applied to end expanding of the steel tubes with different diameters, dimension accuracy of the ends of the steel tubes can be guaranteed, and working efficiency is improved.

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] Referring to 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. For the dimensional accuracy of the butt joint of the steel pipe 1, after the non-destructive testing of the weld seam and the hydrostatic pressure test are completed, the steel pipe end 1-1 needs to be expanded in diameter.

[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 2-10 matched with the base slide ra...

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] Referring to 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. For the dimensional accuracy of the butt joint of the steel pipe 1, after the non-destructive testing of the weld seam and the hydrostatic pressure test are completed, the steel pipe end 1-1 needs to be expanded in diameter.

[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 2-10 matched with the base slide ra...

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