Steel pipe end rounding machine

A technology for steel pipes and pipe ends, applied in the field of longitudinal submerged arc welded pipe production line equipment, which can solve problems such as low efficiency and potential safety hazards

CN102989842AActive Publication Date: 2013-03-27天水天力特种管有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-03-27

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Abstract

The invention discloses a steel pipe end rounding machine, which comprises a body, wherein two sections of rails are symmetrically arranged on the body; a driving vehicle is arranged on the rail; rotating rollers are arranged between the two sections of rails; a steel pipe is arranged between two rotating rollers; a fixing seat is arranged on the driving vehicle; a lower adjusting cylinder is arranged on the fixing seat; a piston rod of the lower adjusting cylinder is arranged at the lower end of a die bracket; the lower part of the die bracket is provided with a lower rounding die; the upper end of the die bracket is provided with a tension cylinder; a piston rod of the tension cylinder is connected with an upper rounding die; the upper rounding die is arranged on a lifting sliding rack; and the lifting sliding rack is arranged on the die bracket. The steel pipe end rounding machine is ingenious in structure and reasonable in design, and the function of improving the ovality of the pipe end of the steel pipes of different lengths and specifications.
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Description

technical field

[0001] The invention belongs to the technical field of straight seam submerged arc welded pipe production line equipment, and in particular relates to a straight seam submerged arc welded pipe whose ellipse at the end of the pipe is corrected and restored to a circular shape before the chamfering machine pours out the welding groove so as to reduce the ellipticity of the end of the pipe. Tube end rounding machine. Background technique

[0002] In the production line of large longitudinal submerged arc welded pipes, the ellipticity of the pipe ends of the finished steel pipes should not be too large, otherwise, it is easy to cause misalignment when two steel pipes are welded together on site. The past experience is to measure the outer diameter of each steel pipe on site, and weld two steel pipes with relatively similar outer diameters in a team, but the workload is heavy and the efficiency is low. In order to solve this problem, the method of expanding the m...

Examples

Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0021] As shown in the figure, a steel pipe end rounding machine includes a car body, two sections of rails 2 are symmetrically installed on the car body, a driving car 1 is installed on the rails 2, a rotating roller 3 is installed in the middle of the two sections of rails 2, and two rotating rollers Steel pipes 4 are installed between the 3. A fixed machine base 7 is installed on the active vehicle 1, and a lower adjustment oil cylinder 16 is installed with a flange on the lower part of the mold support 8. The piston rod of the lower adjustment oil cylinder 16 is fixed on the lower end of the fixed machine base 7, and the lower adjustment oil cylinder 16 can adjust the mold support 8 as a whole. Raising or lowering to adapt to the change of the diameter and wall thickness of the steel pipe 4 causes the height change of the bus bar under the inner wall of the steel ...