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Pre-bending device

A pre-bending and driving device technology, applied in the field of pre-bending devices, can solve the problems of inability to meet production requirements and straightening

Inactive Publication Date: 2009-02-04
ZHANGJIAGANG CHANGLI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The width of the conventional flat bulb steel cooling bed is relatively narrow, generally about 12 meters, which can meet the basic production requirements, because the deformation of the 12-meter-long flat bulb steel can still be straightened by the subsequent straightening machine Straight, if the length of the spherical flat steel is longer, the amount of bending will be greater, and the straightening machine cannot straighten it, so it cannot meet the production demand

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] figure 1 As shown, the described pre-bending device consists of several pre-bending trolleys B arranged side by side 1 ~B n Composition, the number of pre-bending trolleys B can be determined according to the length of the produced special-shaped steel to ensure the amount of pre-bending in the opposite direction of the special-shaped steel.

[0014] As shown in Figure 2, the structure of each pre-bending trolley B is as follows: on the support 7 of the pre-bending trolley B, a driving device 1 and a trolley guide rail 8 are arranged, and the output shaft of the driving device 1 is provided with a drive sprocket 12, and the trolley guide rail 8 is provided with a mobile trolley 6, one end of the chain 10 is fixed on the mobile trolley 6, and the other end is fixed on the mobile trolley after bypassing the driven sprocket 13 arranged on the bracket and the driv...

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Abstract

The invention discloses a preflex device which comprises a plurality of parallelly arranged preflex trolleys and is characterized in that a bracket of each preflex trolley is provided with a driving device and a trolley guideway; an output shaft of the driving device is provided with a driving chain wheel; the trolley guideway is provided with a movable trolley; one end of a chain is fixed on the movable trolley, and the other end rounds a driven chain wheel arranged at the bracket and a driving chain wheel arranged on the driving device and then is fixed on the other end of the movable trolley; the movable trolley is matched and provided with a push head and a card board; a groove is arranged on the card board at the position matched with the push head. The preflex device has the advantages that the preflex device can be used for processing reverse preflex towards profiled bar before the profiled bar is cooled, thus the bending degree of the profiled bar is very small after the profiled bar is cooled; the profiled bar can be straightened by a straightening machine easily; accordingly, the final yield of the profiled bar is improved greatly.

Description

technical field [0001] The invention relates to a pre-bending device for pre-bending special-shaped steel materials. Background technique [0002] Special-shaped steel is a product that is widely used in the national industry. With the rapid development of the equipment manufacturing industry, the requirements for special-shaped steel are also increasing, especially for the length of long special-shaped steel. Some special-shaped steels on the market now, such as flat bulbs for ships, mainly have a maximum length of 12 meters. Flat bulbs for ships have an asymmetric cross-section structure. The asymmetry of its cross-section leads to different cooling rates on both sides, which causes the flat bulb steel to bend and deform in a certain direction. This deformation direction is called the natural cooling deformation direction. The longer the special-shaped steel, the greater the bending arc. The width of the conventional flat bulb steel cooling bed is relatively narrow, gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D11/00B21D11/22
CPCY02P70/10
Inventor 张观华尹磊徐卫平石红卫项向东
Owner ZHANGJIAGANG CHANGLI MACHINERY
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