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Fast steel bar straightening machine and method for straightening steel bars using it

A technology for straightening machine and steel bar, applied in the field of steel bar processing, can solve the problems of poor straightening effect, adverse effects on mechanical properties of reserved steel bars, low straightening efficiency, etc., achieves simple structure, strong equipment versatility, and avoids performance damage Effect

Active Publication Date: 2017-03-15
NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low straightening efficiency, poor straightening effect and adverse effects on the mechanical properties of the reserved steel bars commonly used in the conventional method of straightening the reserved steel bars in the construction process of the existing reverse method, the purpose of the present invention is to provide a steel bar The fast straightening machine and its method of straightening the steel bars enable the reserved steel bars to be hooped and straightened section by section under the constraint of the lateral pressure of the separate hydraulic jack, avoiding the damage caused by the conventional steel bar straightening method to the reserved steel bars Mechanical performance damage, but also able to adapt to the narrow space of reverse construction

Method used

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  • Fast steel bar straightening machine and method for straightening steel bars using it
  • Fast steel bar straightening machine and method for straightening steel bars using it
  • Fast steel bar straightening machine and method for straightening steel bars using it

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Effect test

Embodiment 1

[0028] Example 1: Combining Figure 2 to Figure 6 The steel bar straightening machine of present embodiment is illustrated, as figure 2 As shown, the steel bar quick straightening machine includes a sleeve 11 for straightening reserved steel bars 30, and a hydraulic device 20 communicated with the sleeve 11; the inner wall of the sleeve 11 is provided with at least two sets of hydraulic jack assemblies, namely Hydraulic jack assembly one 12 and hydraulic jack assembly two 13; wherein, each set of hydraulic jack assemblies is provided with three separate hydraulic jacks distributed radially along the axis ax of the sleeve 11 and located on the same section, and each separate hydraulic jack The jacks are all in communication with the hydraulic device 20 , and the separate hydraulic jacks can push in the direction of the axis ax of the sleeve 11 under the action of the hydraulic device 20 , thereby tightening and straightening the reserved steel bar 30 passing through the sleeve...

Embodiment 2

[0036] Embodiment two: combine Figure 2 to Figure 6 Illustrate the method for straightening reserved steel bars by using the steel bar quick straightening machine described in embodiment one, and the specific steps are as follows:

[0037] 1. Make the piston rod b of the separate hydraulic jack be at the initial position (that is, the state where the piston rod b is contracted), and the free end of the reserved steel bar 30 penetrates the sleeve 11 along the axis ax and is interposed between the separate hydraulic jacks;

[0038] 2. Turn on the switch located on the handle 14 to start the hydraulic main engine 21, and the top plate c of the separate hydraulic jack pushes toward the reserved steel bar 30 at the same time, so that the reserved steel bar 30 is gradually squeezed and tightened by the top plate c, thereby straightening the The reserved steel bar 30 of this section in the cylinder 11, the reserved steel bar 30 of about 25cm length can be straightened in one operati...

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Abstract

The invention provides a fast steel bar straightener and a method for utilizing the straightener for straightening steel bars, relates to the technical field of steel bar machining, and aims at the problems that when a reserved steel bar straightening method frequently used in an existing reverse construction method is used, the straightening efficiency is low, the straightening effect is poor, and the adverse effect on the mechanical property of the reserved steel bars is caused. The straightener comprises a sleeve and a hydraulic device which are communicated. At least two hydraulic jack assemblies are arranged on the inner wall of the sleeve. Each hydraulic jack assembly is provided with three separated hydraulic jacks uniformly distributed in the radial direction of the axis and communicated with the hydraulic device. The separated hydraulic jacks can be ejected in under the effect of the hydraulic device, so that the steel bars penetrating through the sleeve are hooped and straightened. The method comprises the steps that 1, the reserved steel bars penetrate through the sleeve so as to be enclosed among the separated hydraulic jacks; 2, the reserved steel bars are extruded, hooped and straightened gradually by the separated hydraulic jacks; 3, the step 1 and the step 2 are repeated to gradually straighten the reserved steel bars from the fixed ends to the free ends.

Description

technical field [0001] The invention relates to the technical field of steel bar processing, in particular to a fast steel bar straightening machine used in the reverse method of building foundation engineering and a method for straightening steel bars using the machine. Background technique [0002] In the reverse construction process, in order to realize the connection with the subsequent structure, it is often necessary to reserve a certain length of steel bars in the construction process of the previous structure, such as the horizontal reserved steel bars or vertical shear wall structures of the intake structure constructed by the reverse method The vertical reserved reinforcement. Such as figure 1 As shown, these reserved steel bars 1 temporarily exposed on the outside of the component will inevitably be bent by the construction machinery on site, or sometimes due to the needs of construction safety, site layout and steel bar protection, the reserved steel bar 1 needs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21F1/02
CPCB21F1/02
Inventor 马跃强龙莉波许崇伟刘龙李成
Owner NO 2 CONSTR GRP CO LTD OF SHANGHAI CONSTR GRP
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