Negative bending moment steel strand threading tool and its application method

A steel strand and negative bending moment technology, which is applied in the field of negative bending moment steel strand threading tools, can solve the problems that affect the life safety of the threading construction personnel, the hidden dangers of the threading construction, and the time-consuming and laborious construction of the threading construction. , to achieve safe and reliable construction process, safe and reliable beam-through construction operation, and avoid scratching and injury effects

Active Publication Date: 2017-10-17
ZHEJIANG ROAD & BRIDGE CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that safety accidents are likely to occur due to high-altitude fall in the construction process of the existing roof during the negative bending moment steel strand threading construction, and the threading construction is time-consuming and laborious, the efficiency of the threading construction is low, and the cost of the threading construction is high. The potential safety hazards of beam threading construction are serious, directly affecting the life safety of beam threading construction workers and other current situations, and the current situation provides a method that can change the beam threading construction position, making the beam threading construction operation safer and more reliable, simpler, time-saving and labor-saving, and more efficient in beam threading. Higher negative bending moment steel strand threading tool and method of use thereof

Method used

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  • Negative bending moment steel strand threading tool and its application method
  • Negative bending moment steel strand threading tool and its application method
  • Negative bending moment steel strand threading tool and its application method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] figure 1 , figure 2 , image 3 , Figure 4 In the shown embodiment, a negative bending moment steel strand threading tool includes a pull rod 10, a pull handle 20 is fixedly connected to the upper end of the pull rod 10, and the pull handle 20 is fixedly connected to the end of the pull rod 10 to form a T-shaped structure. At the lower end of the pull rod 10, two parallel inner and outer lateral card bodies are connected, and the positioning friction plate 50 that is connected to the inner lateral card body 30 on the side of the pull handle is movably rotated, and the positioning friction There is an arc groove 51 on the sheet, the axial arc surface of the arc groove 51 is perpendicular to the inner transverse card body 30, and the axial arc surface of the arc groove 51 is rotated on the inner transverse card body 30 toward the outside The axial arc surface of the transverse card body 40 is spatially inclined towards the outer transverse card body 40; the outer side...

Embodiment 2

[0028] image 3 In the shown embodiment, the positioning friction plate is provided with a drawstring structure that adjusts the rotation direction of the positioning friction plate on the connecting body that is movably connected with the inner lateral card body, and the other end of the pull rope 70 of the pull rope structure is connected to the upper end of the pull rod. . Others are identical with embodiment 1.

Embodiment 3

[0030] Another object of the present invention is to provide a method for using a negative moment steel strand threading tool, which includes the following steps:

[0031] A beam-through construction worker A uses both hands above the pier to directly penetrate the front end of the steel strand into the corrugated pipe B on the side where the beam-through construction worker A is directly facing the direction above the bridge pier;

[0032] Another beam-threading construction worker B holds the pull handle described in Embodiment 1 or Embodiment 2 with both hands, and clamps the inner and outer lateral clamps at the lower end of the pull rod to the steel strand to be threaded, and makes Embodiment 1 Or after one of the arc-shaped grooves of the positioning friction plate on the inner lateral card body described in Embodiment 2 is locked and positioned with the steel strand, pull the pull handle hard to make the steel strand penetrate further in the direction of the construction...

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Abstract

The invention discloses a hogging moment steel strand bundle penetrating tool and a use method thereof. A pull handle is fixedly connected to the upper end of a pull rod. The pull handle and the end of the pull rod are fixedly connected to form a T-shaped structure. An inner transverse clamping body and an outer transverse clamping body which are parallel are connected to the lower end position of the pull rod, a locating friction plate is movably and rotationally connected to the position, close to one side of the pull handle, of the inner transverse clamping body, an arc-shaped groove is formed in the locating friction plate, the axial arc surface of the arc-shaped groove is perpendicular to the inner transverse clamping body, and the interval distance for bundle penetrating construction operation conducted after the arc-shaped groove of the locating friction plate and a steel strand are clamped and located is reserved between the two transverse clamping bodies. By the adoption of the tool, the safety and reliability of a person conducting bundle penetrating construction operation above a pier are improved, bundle penetrating construction operation is safer and more reliable, and the tool is simple, capable of saving time and labor and higher in bundle penetrating efficiency. The phenomenon that palms or other portions of the body of a constructor are scratched and hurt is avoided, bundle penetrating construction operation is safer, more reliable and more effective, and more time and labor are saved.

Description

technical field [0001] The invention relates to a steel strand threading tool, in particular to a negative moment steel strand threading tool used in the pier top negative moment steel strand threading construction and a use method thereof. Background technique [0002] When carrying out negative bending moment construction on the existing pier top, manual beam threading construction is often used, that is, first, the steel strand needs to be threaded into the corrugated pipe opening reserved for the negative moment crossing beam plate at one end, and then the steel strand is continuously threaded into the reserved bellows of the beam body, and then thread the external steel strands back into the opposite bellows at the end of the other span beam plate of the beam body that is aligned with the mouth of the penetrated bellows to realize the return of the steel strands. Thread through the beam until the reserved length of the steel strands at both ends of the pier meets the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00E01D101/28
CPCE01D21/00E01D2101/28
Inventor 谭长根肖辉运叶斌斯纪平王玉富韦麟林后宽傅建红刘胜华章其乐王永旗
Owner ZHEJIANG ROAD & BRIDGE CONSTR
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