CN112536392B - Device suitable for on-site rapid cold-drawing and straightening of thick steel bars and construction process - Google Patents
Device suitable for on-site rapid cold-drawing and straightening of thick steel bars and construction process Download PDFInfo
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- CN112536392B CN112536392B CN202011357456.5A CN202011357456A CN112536392B CN 112536392 B CN112536392 B CN 112536392B CN 202011357456 A CN202011357456 A CN 202011357456A CN 112536392 B CN112536392 B CN 112536392B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
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Abstract
The invention discloses a device suitable for quick cold-drawing and straightening of a thick steel bar on site, which comprises a straightening steel plate, wherein a hanging hole used for being connected with a steel wire hanging rope is formed in the upper part of the straightening steel plate, and a straightening notch used for clamping in the steel bar to be straightened is formed in one side of the straightening steel plate. The construction process for quick cold-drawing straightening of the thick steel bars on site comprises the following steps: one side of the steel bar straightening steel plate is provided with a straightening notch, so that the processing of the steel bar straightening steel plate is completed; the excavator is in place on site, one end of the steel rope lifting rope is connected with the excavator grab, and the other end of the steel rope lifting rope is connected with the straightening steel plate; manually placing the bent section steel bars to be straightened into the straightening notch of the straightening steel plate; the steel bars are sealed through the movable steel wire buckles, so that the steel plates are prevented from being separated from the steel bars when being straightened, and operators are prevented from being endangered; and lifting the grab bucket of the excavator upwards to straighten the steel bars section by section. The steel bar on-site straightening operation is simple and convenient, the working efficiency is greatly improved, and the construction period is saved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a device suitable for on-site rapid cold-drawing and straightening of thick steel bars and a construction process.
Background
Whether it is a pile foundation or an underground diaphragm wall foundation, in order to ensure the pouring quality of pile top concrete, the relevant specifications have clearly required that the pile head needs to be overirrigated by more than 50cm, after the concrete reaches the design strength, the overirrigated concrete is chiseled, in order to ensure the work efficiency, the overirrigated concrete is chiseled generally by mechanical chiseling, a large number of relatively dense main ribs exist in the overirrigated part, and the main ribs are disturbed when chiseled, so that the main ribs are irregularly bent. Before the construction of the subsequent upper structure (such as a bearing platform, a cap beam and the like), the main ribs are required to be straightened so as to meet the engineering quality requirement.
Straightening the steel bar is a process of straightening the bending part of the steel bar; after concrete pouring is completed and roughening is carried out, the main reinforcement can exert normal performance when being stressed in the component through straightening.
The current method for straightening the reinforcing steel bars can be generally divided into two types of hot straightening and cold straightening represented by oxygen acetylene high-temperature baking or fire baking wrenches, wherein the cold straightening is further divided into two processes of manual straightening and mechanical straightening.
For heat straightening, the field operation is very inconvenient, the safety risk is high, and the metallographic structure of the steel bar can be changed under the action of high temperature, so that the mechanical property and the service life of the steel bar are affected, and therefore, the technology is generally not allowed to be adopted.
The manual straightening is mainly suitable for the situations of straightening sporadic steel bars with smaller steel bar diameters (the common steel bar diameter is not more than 10 mm) and small engineering quantity, and has low manual straightening speed, high cost and low efficiency for the abnormal difficulty in straightening large-diameter steel bars with the large diameters of more than phi 28.
For conventional mechanical straightening, professional mechanical straightening machines are already available in the market at present, but the straightening machines are mainly used for straightening the bar stock before the finished products (such as reinforcement cages and the like) are manufactured, so that the accuracy and the installation precision of the blanking length of the bar are ensured, and the on-site disordered bent bar cannot be straightened.
For the reasons, the quick straightening construction of the pile head reinforcing steel bars of the underground diaphragm wall, which are long and narrow in distribution, inevitably disturbed to the main reinforcing steel bars, are large in number and thick in diameter, is not provided with a good solution in the engineering industry at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device and a construction process suitable for on-site rapid cold-drawing straightening of thick steel bars, which are simple and convenient in on-site straightening operation of the steel bars and greatly improve the working efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a device suitable for quick cold-drawing alignment in thick steel bar scene, includes the steel sheet that straightens, the upper portion of steel sheet that straightens is equipped with the hanging hole that is used for being connected with wire lifting rope, one side of steel sheet that straightens is equipped with the alignment notch that is used for waiting to straighten the steel bar card and go into.
The straightening steel plate is a rectangular steel plate, and the hanging hole is formed in the upper end of the steel plate.
The straightening notch is a trapezoid notch.
The steel wire buckle for preventing the steel bar from being ejected out is arranged on the straightening steel plate corresponding to the straightening notch.
The right angle part of the trapezoid notch is arranged close to the hanging hole side.
The steel wire buckle is of a detachable movable steel wire buckle structure.
The steel wire buckle is characterized in that the upper part and the lower part of the straightening notch on the straightening steel plate are respectively provided with a mounting hole and a clamping hole, one end of the steel wire buckle is connected with the mounting holes, and the other end of the steel wire buckle is used for being matched with the clamping holes for positioning.
A construction process for quick cold-drawing and straightening of thick steel bars on site comprises the following steps:
1) One side of the steel bar straightening steel plate is provided with a straightening notch, so that the processing of the steel bar straightening steel plate is completed;
2) The excavator is in place on site, one end of the steel rope lifting rope is connected with the excavator grab, and the other end of the steel rope lifting rope is connected with the straightening steel plate;
3) Manually placing the bent section steel bars to be straightened into the straightening notch of the straightening steel plate;
4) The steel bars are sealed through the movable steel wire buckles, so that the steel plates are prevented from being separated from the steel bars when being straightened, and operators are prevented from being endangered;
5) And lifting the grab bucket of the excavator upwards to straighten the steel bars section by section.
Compared with the prior art, the invention has the following advantages:
the device and the construction process suitable for the on-site rapid cold stretching and straightening of the thick steel bars are reasonable in design, the on-site straightening operation of the steel bars is simple and convenient, the working efficiency is greatly improved, and the construction period is saved; the pile head thick steel bar on-site straightening device well solves the problem that the pile head thick steel bar is straightened on site, particularly the thick steel bar with the diameter exceeding 25mm can not be realized by adopting manual straightening.
Drawings
The contents and the marks in the drawings expressed in the drawings of the present specification are briefly described as follows:
FIG. 1 is a schematic view of the structure of the device of the present invention.
Fig. 2 is a schematic view of a wire clasp of the present invention closing a slot.
Fig. 3 is a schematic diagram of the bar straightening mechanics of the present invention.
In the figure:
1. the steel wire lifting rope, the straightening steel plate, the lifting hole, the straightening notch, the mounting hole, the clamping hole, the steel wire buckle and the steel bar to be straightened are arranged in the steel wire lifting rope, the straightening steel plate, the lifting hole, the straightening notch, the mounting hole, the clamping hole, the steel wire buckle and the steel bar to be straightened.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings, which illustrate in further detail.
As shown in fig. 1 to 3, the device suitable for on-site rapid cold-drawing straightening of the thick steel bars comprises a straightening steel plate, wherein a hanging hole used for being connected with a steel wire hanging rope is formed in the upper portion of the straightening steel plate, and a straightening notch used for clamping the steel bars to be straightened is formed in one side of the straightening steel plate.
The straightening steel plate is a rectangular steel plate, and the hanging hole is formed in the upper end of the steel plate; the straightening notch is a trapezoid notch, and compared with other notches, the trapezoid notch can self-adaptively slightly slide in the notch when stress concentration is more severe, so that the steel bar is not damaged. The right angle part of the trapezoid notch is arranged close to the hanging hole side.
A steel wire buckle for preventing the steel bar from being ejected out is arranged on the straightening steel plate corresponding to the straightening notch; the steel wire buckle is a detachable movable steel wire buckle structure. Preferably, the method is used. The two parts located on the alignment notch on the alignment steel plate are respectively provided with a mounting hole and a clamping hole, one end of the steel wire buckle is connected with the mounting hole, and the other end of the steel wire buckle is used for being matched with the clamping hole for positioning, so that the structure is simple, and the operation is simple and convenient.
The construction process for quick cold-drawing straightening of the thick steel bars on site comprises the following steps:
1) One side of the steel bar straightening steel plate is provided with a straightening notch, so that the processing of the steel bar straightening steel plate is completed;
2) The excavator is in place on site, one end of the steel rope lifting rope is connected with the excavator grab, and the other end of the steel rope lifting rope is connected with the straightening steel plate;
3) Manually placing the bent section steel bars to be straightened into the straightening notch of the straightening steel plate;
4) The steel bars are sealed through the movable steel wire buckles, so that the steel plates are prevented from being separated from the steel bars when being straightened, and operators are prevented from being endangered;
5) And lifting the grab bucket of the excavator upwards to straighten the steel bars section by section.
The steel bar field straightening operation is simple and convenient, the working efficiency is greatly improved, and the construction period is saved; the pile head thick steel bar on-site straightening device well solves the problem that the pile head thick steel bar is straightened on site, particularly the thick steel bar with the diameter exceeding 25mm can not be realized by adopting manual straightening.
Description of preferred embodiments:
the main reinforcement of the ground wall roof is required to be straightened before the steel bars of the hat beam are bound, and the straightening device adopts a thickened and open rectangular high-strength steel plate (the length of the steel plate is 400mm multiplied by the width of the steel plate is 200mm multiplied by the thickness of the steel plate is 38mm, and the specific size and the plate thickness can be determined according to the diameter of the straightened steel bars and the required straightening force): the steel plate is provided with a trapezoid notch so as to enable the straightened steel bar to be in place; in order to prevent the safety of constructors from being endangered when the machine is straightened, the movable steel wire buckle is arranged at the notch, so that the notch can be quickly and conveniently closed; the top of the steel plate is provided with a hole so as to be convenient for installing a shackle, a steel wire rope is arranged on the shackle, and the steel wire rope is connected with lifting equipment, so that the aim of straightening the steel bars is fulfilled.
The equipment of alignment can select hoist or dig the machine, considers dig the comparatively flexible flexibility of machine, and the efficiency of construction is high, is connected to the lifting hook of dig the machine bucket through wire rope on, and the main muscle is lived to the steel sheet interlock, with the powerful promotion of dig the machine bucket, can accomplish the reinforcing bar alignment fast.
As shown in fig. 3, by using the mechanics principle, a thick steel bar is clamped into a steel plate through a thickened and open rectangular high-strength steel plate, a notch is used as a fulcrum, an upward acting force and a moment arm between the fulcrum form a couple, when the couple is larger than the resisting moment of the steel bar, the steel bar deforms towards the acting force direction (namely is gradually straightened) until the acting force and the direction of an anchor point are vertical, and at the moment, the steel bar of the section to be straightened is in a straightened state.
The pile head steel bar on-site straightening is a difficult problem which is difficult to control all the time, particularly the thick steel bar with the diameter exceeding 25mm is hardly realized by adopting manual straightening.
The number of the steel bars of the pile head of the continuous wall in general engineering reaches thousands, the diameter of the steel bars reaches about 40mm, the number of the steel bars is large, and if manual straightening cannot achieve an ideal straightening effect, the engineering cannot be completed on time, and the straightening process is adopted, so that the straightening time of a single steel bar is only about 5 minutes, the construction efficiency is greatly improved, and the construction period is saved.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and the above-described technical features may be arbitrarily combined to form a plurality of embodiments of the present invention.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is capable of being modified or applied to other applications without any modification, as long as the inventive concept and technical scheme are adopted.
Claims (1)
1. A construction process for quick cold-drawing and straightening of thick steel bars on site is characterized in that:
the device comprises a straightening steel plate, wherein a hanging hole used for being connected with a steel wire hanging rope is formed in the upper part of the straightening steel plate, and a straightening notch used for clamping in a steel bar to be straightened is formed in one side of the straightening steel plate;
the straightening notch is a trapezoid notch; the right-angle part of the trapezoid notch is arranged close to the hanging hole side;
the steel wire buckle for preventing the steel bar from being ejected out is arranged on the straightening steel plate corresponding to the straightening notch; the steel wire buckle is of a detachable movable steel wire buckle structure; the upper part and the lower part of the straightening notch on the straightening steel plate are respectively provided with a mounting hole and a clamping hole, one end of the steel wire buckle is connected with the mounting hole, and the other end of the steel wire buckle is used for being matched and positioned with the clamping hole;
the construction process comprises the following steps:
1) One side of the steel bar straightening steel plate is provided with a straightening notch, so that the processing of the steel bar straightening steel plate is completed;
2) The excavator is in place on site, one end of the steel rope lifting rope is connected with the excavator grab, and the other end of the steel rope lifting rope is connected with the straightening steel plate;
3) Manually placing the bent section steel bars to be straightened into the straightening notch of the straightening steel plate;
4) The steel bars are sealed through the movable steel wire buckles, so that the steel plates are prevented from being separated from the steel bars when being straightened, and operators are prevented from being endangered;
5) And lifting the grab bucket of the excavator upwards to straighten the steel bars section by section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011357456.5A CN112536392B (en) | 2020-11-27 | 2020-11-27 | Device suitable for on-site rapid cold-drawing and straightening of thick steel bars and construction process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011357456.5A CN112536392B (en) | 2020-11-27 | 2020-11-27 | Device suitable for on-site rapid cold-drawing and straightening of thick steel bars and construction process |
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| CN112536392A CN112536392A (en) | 2021-03-23 |
| CN112536392B true CN112536392B (en) | 2023-07-14 |
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| CN210936875U (en) * | 2019-09-12 | 2020-07-07 | 中铁二局集团有限公司 | Simple and convenient reinforcing bar straightening device |
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| CN201427164Y (en) * | 2009-04-16 | 2010-03-24 | 中铁六局集团有限公司 | Pile head reinforcement bar straightener |
| JP2011110569A (en) * | 2009-11-26 | 2011-06-09 | Asahi Sunac Corp | Straightening device and straightening method for coil-shaped wire rod |
| CN202621774U (en) * | 2012-05-23 | 2012-12-26 | 中建七局第一建筑有限公司 | Steel-bar straightening righting spanner |
| CN202910227U (en) * | 2012-11-02 | 2013-05-01 | 中铁十九局集团第七工程有限公司 | Twisted steel bar straightening mechanism |
| CN203992153U (en) * | 2014-05-09 | 2014-12-10 | 中国建筑第六工程局有限公司 | A kind of bar straightening machining tool |
| JP2018144185A (en) * | 2017-03-07 | 2018-09-20 | 旭金属工業株式会社 | Wire correction tool |
| CN207057520U (en) * | 2017-03-31 | 2018-03-02 | 上海宝冶集团南京建筑有限公司 | A kind of filling pile head bar straightening instrument |
| CN208230735U (en) * | 2018-04-26 | 2018-12-14 | 河南省第一建筑工程集团有限责任公司 | A kind of bar straightening machining tool |
| CN208945053U (en) * | 2018-10-17 | 2019-06-07 | 国网四川省电力公司甘孜供电公司 | Control cable smoothes out with the fingers the Line tool |
| CN109894546A (en) * | 2019-03-26 | 2019-06-18 | 五冶集团上海有限公司 | A kind of bar straightening tool of simplicity |
| CN210547652U (en) * | 2019-07-17 | 2020-05-19 | 中建八局第二建设有限公司 | Pile head reinforcing steel bar straightening tool |
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| CN210936875U (en) * | 2019-09-12 | 2020-07-07 | 中铁二局集团有限公司 | Simple and convenient reinforcing bar straightening device |
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