Steel strand outer wire tensioning device and inner and outer wire limit friction force measuring device and method
A tensioning device and a technology for steel strands, applied in the field of detection, can solve the problems of difficulty in observing the change of the outer wire, inconvenient installation of the outer wire, etc., and achieve the effects of small occupied space, convenient installation, and reliable separation and anchoring.
Active Publication Date: 2021-06-18
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
[0006] The outer wire between the two loose anchor devices is blocked by the oil cylinder, it is inconvenient to install related instruments for data acquisition on the outer wire, and it is also difficult to observe the change of the outer wire during the tensioning process
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[0043] The present invention will be described in further detail below.
[0044] Such as Figure 1 - Figure 4 As shown, the steel strand outer wire is applied, and the steel strand 5 is provided with inner wire 52 and the plurality of outer wire 51, including the frame 4, the first bulk unit 11, the second bulk anchor device 12, The connecting device and the first driving device, the steel strand 5 sequentially passes on the first discharge anchor device 11 and the second bulk anchor device 12, the first bulk anchor device 11 separates the outer wire 51 and the inner wire 52 of the end of the steel strand 5 The outer wire 51, the second discharge anchor device 12 separates the outer wire 51 and the inner wire 52 of the other end of the steel strand 5 and the inner wire 51, and the first bulk anchor device 11 and the first driving device are respectively provided in the second scatter. On both sides of the anchor device 12, the first discharge anchor device 11 is connected to the fr...
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The invention relates to a steel strand outer wire tensioning device which comprises a rack, a first anchor scattering device, a second anchor scattering device, a connecting device and a first driving device, wherein the first anchor scattering device and the second anchor scattering device separate and anchor an outer wire and an inner wire at the two ends of a steel strand, and the first anchor scattering device and the first driving device are arranged on the two sides of the second anchor scattering device respectively. The first anchor scattering device is connected to the rack, the second anchor scattering device is slidably connected to the rack, a fixed part of the first driving device is fixedly connected to the rack, a movable part of the first driving device is connected to one end of the connecting device, and the other end of the connecting device is connected to the second anchor scattering device. And the steel strand outer thread between the first anchor scattering device and the second anchor scattering device is connected with a data acquisition instrument. A necessary operation space is provided for mounting a data acquisition instrument on the surface of the outer wire of the steel strand so as to acquire data and measure, and a necessary observation space is provided for the change of the outer wire in an experiment process. The invention further relates to a steel strand inner and outer wire limit friction force measuring device and method.
Description
Technical field [0001] The present invention relates to the field of detection, and more particularly to steel lagging wire tensile devices and internal and external wire limit friction force measuring devices and methods. Background technique [0002] Steel strands are stranded steel cables composed of high-strength steel wires, suitable for bridge cable, prestressed concrete or similar uses, in other fields such as highway bridges and other fields such as mechanical industries. [0003] The steel strand includes inner wire and a plurality of outer wires wound on the inner wire. The steel strand outer wire has a spiral twist spatial shape, and the inner wire will form a tightening force to form a complex contact, friction, slip, etc., which causes the steel strand wire to form a complex contact, friction, slip and other mechanical behavior, which in turn leads to it Mechanical damage such as frequent wear, fatigue, breaking during use during use. The core content of the interact...
Claims
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IPC IPC(8): G01L1/04
CPCG01L1/04
Inventor 赵勇霖郭俊标甄晓霞张卓杰王荣辉李明阳李浚东
Owner SOUTH CHINA UNIV OF TECH