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Reinfored bar rolling thread connector and connecting method

A threaded connector and threaded connection technology, applied in the direction of building components, building reinforcements, structural elements, etc., can solve the problem of increasing the unevenness of force on each thread and stress concentration, affecting the external output of building construction technology, Issues such as restrictions on the use of steel bars

Inactive Publication Date: 2010-08-11
上海建研钢筋连接技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, due to the limitation of steel bar connection technology, large-scale steel bars with a steel bar diameter greater than 40mm were not used in construction projects, which affected the improvement of the construction level and the export of construction technology.
The strength of the steel bar is proportional to the square of the diameter, and the connection strength of the single-turn thread is proportional to the thread diameter. To ensure the connection strength, the thread connection of large-scale steel bars must increase the number of connection thread turns, which will increase the force of each turn of thread The degree of unevenness and stress concentration greatly restrict the use of steel bars with a diameter greater than 40mm.

Method used

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  • Reinfored bar rolling thread connector and connecting method
  • Reinfored bar rolling thread connector and connecting method
  • Reinfored bar rolling thread connector and connecting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Embodiment 1: With reference to Fig. 1, Fig. 2. For the connecting sleeve and the steel bar, the present invention only designs the profile angle of the (internal) thread of the connecting sleeve and the (external) thread of the steel bar to be 75°, and the tooth height is designed to be 0.38~0.43 times of the pitch, preferably the tooth height is 0.41 times the pitch. In practice, the purpose of the invention can be achieved as long as one or both ends of the connecting sleeve are screwed with steel bars.

Embodiment 2

[0009] Embodiment 2: Refer to Fig. 3 and Fig. 4 . In this embodiment, on the basis of Embodiment 1, the connecting sleeve is designed as two sections of (internal) threads with relative left and right hand directions, and the left and right (inner) threads are respectively screwed with steel bars matching the hand directions. The outer diameters of the steel bars at both ends of the connecting sleeve can be the same or different.

Embodiment 3

[0010] Embodiment 3: Refer to FIG. 5 . In this embodiment, the bottom diameters of the two sections (internal) threads in the left and right directions of the connecting sleeve are different, and a telescopic sleeve with internal threads and external threads at both ends is used to screw the external threads of the telescopic sleeve on On the (internal) thread matched with the connecting sleeve, the internal thread of the telescopic sleeve is screwed on the (external) thread of the steel bar, and the length after the steel bar is connected can be adjusted.

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Abstract

A rolled thread connection element of steel reinforcement is prepared as setting thread for connecting with steel reinforcement at one end of connection sleeve on said element, setting thread profile angle to be 75 degree and top height of thread to be 0.38-0.43 times of thread pitch, using one end of connection sleeve to connect said element with steel reinforcement through thread.

Description

[technical field] [0001] The invention relates to the technical field of building construction, in particular to an extra-large steel bar rolling threaded connector for building. [Background technique] [0002] With the development of construction technology and the expansion of building scale, the diameter of steel bars and the density of steel bars are getting larger and larger. In the past, due to the limitation of steel bar connection technology, large-scale steel bars with a steel bar diameter greater than 40mm were not used in construction projects, which affected the improvement of the construction level and the export of construction technology. The strength of the steel bar is proportional to the square of the diameter, and the connection strength of the single-turn thread is proportional to the thread diameter. To ensure the connection strength, the thread connection of large-scale steel bars must increase the number of connection thread turns, which will increase ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/18
Inventor 穆铭豪张卫平
Owner 上海建研钢筋连接技术有限公司
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