Small portable self-adaptive hydraulic pipe bender

Abstract

The invention provides a small portable self-adaptive hydraulic pipe bender. The pipe bender comprises a forming die, a compression bar, a pressing bar, a connection bar, a piston, a pipe clamp, a pressing block, a forming die hinge pin, a pressing bar hinge pin, a pressing block hinge pin, a manual hydraulic pump and a high-pressure hose. The forming die is a body structure, and the ends of the pipe clamp and the pressing bar are hinged to the forming die through the forming die hinge pin. The middle of the pressing bar is hinged to the pressing bar hinge pin through the connection bar, the pressing block is hinged to the other end of the pressing bar through the pressing block hinge pin, the piston is disposed in an oil cylinder in the forming die, and the manual hydraulic pump is used for providing oil pressure. During operation, a straight pipe to be bent is attached to the forming die through the pipe clamp and the pressing block, the manual hydraulic pump is pressed repeatedly to generate high-pressure oil to push the piston to move, the connection bar is pushed by the piston and pulls the pressing bar to rotate, and the pressing bar pushes the pressing block to impose bending moment on the pipe to bend the pipe. The pipe bender has the advantages of being portable, compact in structure, large in bending moment, self-adaptive to changes, applicable to pipe bundle bending within limited operation space and capable of preventing producing of defects of pits, indentations and the like on the surfaces of pipes.

Description

technical field [0001] The invention relates to a small portable self-adaptive hydraulic pipe bender which is portable, compact in structure, large in bending moment and applicable to limited operating space, and belongs to the technical field of thick-wall pipe bending pipe bender design. Background technique [0002] At present, there are a large number of highly automated and high-precision pipe bending equipment on the market. The size of such equipment is usually large, with a length, width and height of several meters, and only straight pipes can be installed on the pipe bending equipment alone for bending. . For on-site bent pipes with limited operating space, such as but not limited to, for each thick-walled straight pipe in the bent pipe bundle, the ratio of the inner diameter of the straight pipe to the wall thickness is less than 3, and the number of straight pipes is about 40, parallel to each other. The outer diameter is about 20 mm, one end is fixed, the other...

AI Technical Summary

Problems solved by technology

For on-site bent pipes with limited operating space, such as but not limited to, for each thick-walled straight pipe in the bent pipe bundle, the ratio of the inner diameter of the straight pipe to the wall thickness is less than 3, and the number of straight pipes is about 40, parallel to each other. The outer diameter is about 20 mm, one end is fixed, the other end is free, the tube spacing is small, within 100 mm, the bending radius is about 150 mm, and the bending angle is 35 degrees. The bending can only be carried out on site. Tube equipment cannot solve the above-mentioned tube bundle bending problem with operating space restrictions

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