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A special hoop bending machine for making high-speed rail box girder steel bars

A hoop bending machine and box girder technology, applied in the field of steel bar hoop bending machines, can solve the problems of low work efficiency, large shape error and high labor intensity, and achieve the effects of simple structure, good hoop quality and high efficiency

Active Publication Date: 2019-07-05
NANJING LONGHAO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above production method: low work efficiency, high labor intensity, large shape error

Method used

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  • A special hoop bending machine for making high-speed rail box girder steel bars
  • A special hoop bending machine for making high-speed rail box girder steel bars
  • A special hoop bending machine for making high-speed rail box girder steel bars

Examples

Experimental program
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Effect test

Embodiment Construction

[0020] The present invention will be further explained below in conjunction with the drawings:

[0021] As attached figure 1 , 2 , 3, the workbench 2 is fastened to the frame 1 by a number of bolts 5 and gaskets 6; the straight section mold 11 and the arc mold 18 are fastened to the workbench 2 by bolts, the straight section mold 11 and the arc The shape mold 18 together constitutes a combined bending mold inside the steel hoop on the worktable 2, and the straight section mold 11 is placed at the front end of the arc mold 18; the vertical shaft 7 is vertically supported in the frame 1 through two bearings 8 and passes through the first The ends of the three bearings 4 are positioned on the positioning journal 201 on the bottom surface of the table 2; one end of the rotating arm 3 is fixedly connected to the vertical shaft 7, which lies horizontally between the table 2 and the frame 1, and makes the other One end protrudes out of the worktable 2, and at the protruding end is provi...

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PUM

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Abstract

The invention relates to a special hoop bending machine for manufacturing a box girder reinforcing steel bar of high-speed railway. The special hoop bending machine comprises a rack, a workbench, a straight section mould, an arc-shaped mould, a vertical shaft, a rotary arm, a pressure roller mechanism and a power system, wherein the straight section mould and the arc-shaped mould define a reinforcing steel bar hoop inside profiling mould on the workbench; the vertical shaft is perpendicularly supported in the rack; one end of the rotary arm is fixed with the vertical shaft and is transversely arranged between the workbench and the rack; the other end of the rotary arm extends out of the workbench; the upper part of a roller shaft is movably connected with the rotary arm which extends out of the workbench; the lower part of the roller shaft is connected with a roller through a bearing; and the outer cylindrical surface of the roller is opposite to an arc-shaped mould surface, and defines a three-sided mould cavity of the threaded steel in the axial section of the vertical shaft along with a working table board. Threaded steel is put in the straight section mould to start a speed reducer, and the rotary arm rotates clockwise and drives the roller wheel to rotatably press the threaded steel, so that the threaded steel is deformed according to the shape of the arc-shaped mould; when the roller gets across the arc-shaped mould and rotates by a set circular-arc angle, the roller forces the threaded steel to bend into a tail-end straight section; and a bending angle is determined by the size of a circular-arc angle that the roller wheel gets across the arc-shaped mould.

Description

Technical field [0001] The invention relates to a steel bar bending machine, in particular to a steel bar bending machine specially used for making high-speed rail box beam steel bars, and belongs to the technical field of construction machinery design and manufacture. Background technique [0002] With the rapid development of high-speed railways in my country, a 900-ton prefabricated box girder has been widely used in practical high-speed railway projects. In order to ensure driving safety and structural durability, the designers of the project installed more than 60 tons of threaded steel bars in the reinforced concrete box girder, and more than 20 kinds of stirrup shapes, one of which was bent at 90° at both ends and connected A straight section, the middle part is an arc section of steel hoops, the straight sections at both ends are required to bend inward, and the angles to the arc tangent are 3° and 9°. This style of steel hoops is installed in each box girder. As many as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21F1/00
CPCB21F1/00B21F1/004
Inventor 李守祥
Owner NANJING LONGHAO NEW MATERIAL TECH CO LTD
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