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Manufacturing method of 8-byte grating steel frame

The technology of grid steel frame and manufacturing method, which is applied in the field of grid steel frame production, can solve the problems that the grid steel frame cannot be realized, and achieve the effect of less manufacturing steps, high production efficiency and short process

Inactive Publication Date: 2012-07-04
THE 4TH ENG CO LTD OF CHINA RAILWAY 17TH BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "8" ribs of the "8" byte grid steel frame have a V shape in front view and a "8" shape in the top view. Due to the special shape of its structure, it cannot be realized by the transmission grid steel frame manufacturing process. "8" byte grid steel frame production

Method used

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  • Manufacturing method of 8-byte grating steel frame
  • Manufacturing method of 8-byte grating steel frame
  • Manufacturing method of 8-byte grating steel frame

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Embodiment Construction

[0017] figure 1 It is the production flowchart of the production method of the 8-byte grid steel frame of the present invention; figure 2 It is a schematic diagram of the structure of the cold bending device; image 3 It is a schematic diagram of the structure of the cold pressing device.

[0018] As shown in the figure, the manufacturing method of the 8-byte grid steel frame in this embodiment includes the following steps:

[0019] a. Cutting the material, using a cutting machine to cut the steel bar into the specified size;

[0020] b. For the first bending, the steel bar is bent into a rectangular blank by a cold bending machine;

[0021] c. For the second cold bending, the rectangular blank is cold-finished by the cold bending device to complete the 8-byte grid blank;

[0022] d. Cold-press forming, the 8-byte grid blank is cold-pressed into a v-shape by a cold-pressing device.

[0023] The manufacturing method of the 8-byte grid steel frame has few manufacturing ste...

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Abstract

The invention discloses a manufacturing method of an 8-byte grating steel frame, comprising the following steps of: a, blanking: adopting a cutting machine to cut steel strips into the specified size; b, primary bending: bending the steel strip into a rectangular blank by a cold bending machine; c, secondary cold bending: cold-bending the rectangular blank into an 8-byte grating blank by a cold bending device; and d, cold-pressing forming: cold-pressing the 8-byte grating blank into a v shape by a cold-pressing device. According to the manufacturing method, the manufacturing steps are fewer, the process is short, and the production efficiency is high; simultaneously, the adopted cold-bending device and the cold-pressing device are respectively provided with a limiting device adaptive to the 8-byte grating steel frame, the forming accuracy of the 8-byte grating steel frame can be ensured, the cold-bending device and the cold-pressing device are respectively and automatically controlled by a hydraulic system, the labor intensity of operators can be reduced and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a method for manufacturing a grid steel frame, in particular to a method for manufacturing an 8-byte grid steel frame. Background technique [0002] As the railway market gradually increases safety and quality requirements, the support measures for railway construction have gradually shifted from the original general grid steel frame to the "8" byte grid steel frame. The "8" byte grid steel frame is to change the row frame structure of the ordinary grid steel frame from the original "U" shaped ribs to "8" shaped ribs. The "8" ribs of the "8" byte grid steel frame have a V shape in front view and a "8" shape in the top view. Due to the special shape of its structure, it cannot be realized by using the transmission grid steel frame manufacturing process. "8" byte grid steel frame production. [0003] Therefore need a kind of manufacturing method that can improve " 8 " byte grid steel frame production efficiency and can guarante...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D11/10
Inventor 余佳银
Owner THE 4TH ENG CO LTD OF CHINA RAILWAY 17TH BUREAU GRP
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