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Carbon fiber board prestress tension clamp

A carbon fiber plate and prestressing technology, applied in the direction of manufacturing tools, workpiece clamping devices, etc., can solve problems such as the inability to reinforce carbon fiber plate engineering structures, achieve the effects of increasing force, preventing fracture, and improving clamping performance

Active Publication Date: 2012-07-04
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current carbon fiber sheet tensioning fixtures cannot meet the above requirements, and cannot make carbon fiber sheets high-quality and widely used in engineering structure reinforcement.

Method used

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  • Carbon fiber board prestress tension clamp
  • Carbon fiber board prestress tension clamp
  • Carbon fiber board prestress tension clamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 It is a structural schematic diagram of a prestressed tensioning fixture for a carbon fiber plate of the present invention; figure 2 is a sectional view of the clamping sleeve; image 3 for figure 2 The enlarged view of the section along A-A; Figure 4 It is a schematic diagram of the wedge-shaped clip wedged into the clamping sleeve; Figure 5 for Figure 4 Enlarged view of part P in the middle; Figure 6 It is a schematic diagram of the structure of the pre-jacking device; Figure 7 is the B-direction view of the support plate II; Figure 8 It is a schematic diagram of the pre-jacking operation; Figure 9 It is a schematic diagram of the tensioning state of the tensioning fixture; Figure 10 It is a schematic diagram of the structure of the jacking device; Figure 11 It is a schematic diagram of the jacking operation; Figure 12 It is a schematic diagram of the structure of the support plate II with dovetail operation; Figure 13 for Figure 12 ...

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Abstract

The invention discloses a carbon fiber board prestress tension clamp which comprises a clamping sleeve with a wedge-shaped through hole, a wedge-shaped clamping piece used for clamping a carbon fiber plate, a connecting plate detachably fixedly arranged at the big opening end of the wedge-shaped through hole, and a tension rod fixedly arranged on the connecting plate, wherein the wedge-shaped clamping piece is used for clamping the carbon fiber plate and then is wedged into the clamping sleeve to be matched with the wedge-shaped through hole. The carbon fiber board prestress tension clamp is characterized in that the wedge angle of the wedge-shaped clamping piece is more than that of the wedge-shaped through hole, which can lighten the stress concentration at the small end of the wedge-shaped clamping piece, is beneficial to transferring the tension force inside the clamp and prevents the carbon plate from being broken during the tesnion. The cylindrical clamping sleeve is adopted to ensure that the thickness of the clamping sleeve at the middle along the width direction of the wedge-shaped clamping piece is biggest, which can reduce the transverse deformation of the clamping sleeve, is beneficial to the uniform force of the carbon fiber plate in the width direction and prevents carbon fibers at the side of the carbon fiber plate from being broken, therefore, the clamp has better clamping property. A pre-ejecting and ejecting-retreating device is matched with the clamp, therefore, the prestress tension operation with high-quality and high speed and efficiency of the carbonfiber plate can be realized.

Description

technical field [0001] The invention relates to a clamp, in particular to a prestressed tensioning clamp for a carbon fiber plate. Background technique [0002] Carbon fiber material is a high-performance engineering material. Its elastic modulus is close to or even higher than that of steel, and its fiber strength can reach more than 3500MPa, which has high engineering application value. [0003] Due to its superior performance, carbon fiber materials have been widely used in structural reinforcement and reconstruction projects, but for most engineering instances, they are used at a low level. In actual engineering, carbon fiber materials are usually pasted on the surface of the structure in the form of sheets, and the strength utilization rate usually does not reach 20% of the standard strength, and the stress level under the normal use limit state generally does not reach 5% of the standard strength. [0004] A large number of theoretical analysis and experimental resear...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B11/00
Inventor 全学友
Owner CHONGQING UNIV
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