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Large rectangular pipe straightening device and method

A rectangular tube and tube alignment technology, applied in the field of rectangular tube straightening, can solve the problems of thin-wall collapse of rectangular tubes, damage to the structure of rectangular tubes, etc., and achieve the effect of increasing the scope of use

Pending Publication Date: 2022-04-15
CSIC ZHONGNAN EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a large-scale rectangular tube straightening device and method to solve the problem that the existing straightening device will inevitably destroy the structure of the rectangular tube when straightening the rectangular tube, especially for large-scale thin-walled rectangular tubes. When the pipe is straightened, the thin wall of the rectangular pipe will partially collapse when the straightening pressure is too large

Method used

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  • Large rectangular pipe straightening device and method
  • Large rectangular pipe straightening device and method
  • Large rectangular pipe straightening device and method

Examples

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Embodiment 1

[0040] Such as Figure 1~10 As shown, a large-scale rectangular pipe straightening device and method, including a workbench 1, a support frame 2 is fixed on the workbench 1, a hydraulic cylinder 3 is fixed on the top of the support frame 2, and end portions are provided on both sides of the support frame 2 The support assembly 5 and the end support assembly 5 are used to support the two ends of the rectangular tube 4. A briquetting assembly 7 is provided on the outside of the deformation of the rectangular tube 4, and an internal support assembly 6 is provided on the inside. The briquetting assembly 7 is arranged on the hydraulic cylinder 3 directly below. With this structure, the support assembly 6 abuts against the inside of the deformation of the rectangular tube 4, the briquetting block assembly 7 abuts against the highest point of the deformation of the rectangular tube 4, and the two ends of the rectangular tube 4 are supported against the end support assembly 5, thereby...

Embodiment 2

[0054] Such as Figure 1~10 As shown, further description in conjunction with Example 1: adjust the height and width of the internal support assembly 6 according to the internal dimensions of the rectangular tube 4, and fix the internal support assembly 6 at the deformation of the rectangular tube 4; adjust accordingly according to the external dimensions of the rectangular tube 4 The opening of the briquetting block assembly 7 is such that the briquetting block 701 abuts against the highest deformation point of the rectangular tube 4, the side slide plate 703 abuts against both sides of the rectangular tube 4, and the connecting rod 704 abuts against the bottom of the rectangular tube 4; the rectangular tube 4 Both ends lean against the end support assembly 5, the support plate 502 in the end support assembly 5 can rotate to fit the end face of the rectangular tube 4, and the side baffles 504 are against the two sides of the rectangular tube 4; move the rectangular tube 4. Ma...

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Abstract

According to the large rectangular pipe straightening device and method, an electro-hydraulic direct drive system is used for driving a hydraulic cylinder, and the output pressure of the hydraulic cylinder and the extension amount of a piston rod can be accurately controlled; the end supporting assembly, the internal supporting assembly and the pressing block assembly can adjust the internal size and the installation position according to the size of the rectangular pipe so as to meet the straightening work of the rectangular pipes of various different specifications, and the use range of the product is greatly widened. The end supporting assemblies can freely rotate according to the deformation state of the rectangular pipe, when the rectangular pipe is pressed and corrected to deform, the end supporting assemblies and the deformed rectangular pipe are always kept in surface contact, and local collapse of the thin wall caused by line contact after deformation is avoided; an internal supporting assembly capable of being adjusted and tightly supported is arranged in the rectangular pipe, and the situation that the whole structure of the rectangular pipe does not reach the strength critical value required by deformation and the local part in contact with the pressing block assembly collapses in the pressing and correcting process is avoided.

Description

technical field [0001] The invention relates to the technical field of straightening rectangular tubes, in particular to a large-scale rectangular tube straightening device and method. Background technique [0002] In the production process of the rectangular tube, the rectangular tube has different degrees of bending deformation in the length direction, and the factory state cannot meet the use requirements, so it is necessary to use the straightening method to straighten the rectangular tube to make it meet the precision standard; the existing calibration When the straightening device straightens the rectangular tube, it will inevitably destroy the structure of the rectangular tube, especially when straightening a large thin-walled rectangular tube, the thin wall of the rectangular tube will partially collapse when the straightening pressure is too large. [0003] The Chinese patent "CN201815570U" ​​relates to a flat-push square rectangular tube straightening machine. In t...

Claims

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Application Information

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IPC IPC(8): B21D3/10B21D43/00
Inventor 曹源杜浩斌张春林万兴余黄天珩
Owner CSIC ZHONGNAN EQUIP