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Method and device for calibrating longitudinal welding seam of steel pipe

A steel pipe and correction frame technology, applied in the field of electro-hydraulic correction method and its device

Active Publication Date: 2013-08-14
彭智祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the steel pipe is manufactured by the horizontal mechanical assembly welding process, the steel pipe cannot be moved but can be rotated. The aforementioned correction methods and devices do not meet the requirements of its working position, and at the same time cannot meet the requirements of its fast and accurate correction.

Method used

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  • Method and device for calibrating longitudinal welding seam of steel pipe
  • Method and device for calibrating longitudinal welding seam of steel pipe
  • Method and device for calibrating longitudinal welding seam of steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 2: as Figure 5 A correction frame shown is composed of a horizontally placed U-shaped frame 1, a movable pull plate 2, an adjustment backing plate 3, a hydraulic jack 4 and an electric pump station 5 thereof. The U-shaped frame includes an upper beam 6, a lower beam 7, a column 8 and a horizontal track 9. The top surface of the lower beam 7 is a concave groove, and the open end of the U-shaped frame has a pin shaft 10 connected to a movable pull plate, and the pin shaft 10 It is fixed or telescopic, the telescopic pin is installed in the pin hole 11 of the beam, the hydraulic jack 4 is installed between the upper beam and the lower beam of the U-shaped frame 1, and its horizontal track 9 is used as a support And can move longitudinally, the movement of the hydraulic jack 4 can be driven by the electric screw nut 12 or the trolley driven by the motor reduction gear, the movable pull plate 2 is installed on the open end of the U-shaped frame 1, and the movable...

Embodiment 2

[0017] Embodiment 3: as Figure 4 A calibration frame with an automatic calibration procedure shown is composed of a horizontally placed U-shaped frame 1 , a movable pull plate 2 , an adjustment backing plate 3 , a hydraulic jack 4 and its electric pump station 5 . The U-shaped frame includes an upper beam 6, a lower beam 7, a column 8 and a horizontal track 9. The top surface of the lower beam 7 is a concave groove, and the open end of the U-shaped frame has a pin shaft 10 connected to a movable pull plate, and the pin shaft 10 It is fixed or telescopic, the telescopic pin is installed in the pin hole 11 of the beam, the hydraulic jack 4 is installed between the upper beam and the lower beam of the U-shaped frame 1, and its horizontal track 9 is used as a support And can move vertically, the movement of the hydraulic jack 4 is driven by the electric screw nut 12 or the trolley driven by the motor reduction gear, the movable pull plate 2 is installed on the open end of the U-s...

Embodiment 3

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PUM

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Abstract

The invention discloses an electro-hydraulic method and device for correcting steel pipes, which are used for cold pressing of steel pipes or steel plates in a horizontal state. The existing technology reduces manual repetitive work, makes the operation very simple, and the steel pipe manufacturing quality is easier to be guaranteed. With the assistance of a crane or a rail transport trolley, the correction frame is conveniently moved horizontally, and the steel pipe or steel plate in the U-shaped frame with a locked height is cold-pressed with a jack in a segmented or multi-point connection to achieve a certain length. The welding longitudinal seam of steel plate or steel pipe structure can be corrected or arc pressed, and only an ordinary mechanical operator can easily complete the whole operation procedure on site.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and relates to an electro-hydraulic correction method and device for the longitudinal seam of a steel pipe in a horizontal state, which are used for cold pressing of a steel pipe or steel plate of a certain length. Background technique [0002] In the process of manufacturing pressure vessels or steel pipes, it is usually necessary to cold-press the steel plate. For example, before rolling the plate, use a large press to bend the end of the steel plate, and then send it to the plate rolling machine to be rolled into tiles with a certain arc. . After the tiles are welded into a steel pipe structure, there may be deformation due to longitudinal seam welding, especially when submerged arc welding is used for fast welding, it is often necessary to correct the arc of the part where the deformation exceeds the standard. There are two existing correction methods, one is to hoist the steel pipe ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D3/10B21D1/00
Inventor 彭智祥
Owner 彭智祥