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Device and method for testing friction coefficient of stranded wire and splice fitting sleeve
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A technology for connecting fittings and friction coefficients, which is applied in the direction of measuring devices, mechanical devices, instruments, etc., can solve the problems of large tensile force, long strand sample length, and no friction coefficient, etc., and achieve the effect of short strands and wide specification range
Active Publication Date: 2022-04-22
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +3
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Abstract
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is: in order to solve the problem that there is no special test device for the friction coefficient between the stranded wire and the casing in the prior art, and when using the stranded wire pulling force to carry out the friction test, the stranded wire sample length needs to be long and the pulling force In order to provide a friction coefficient test device and method for stranded wires and connecting fittings sleeves
Method used
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Embodiment 1
[0028] This embodiment provides a device for testing the coefficient of friction between a stranded wire and a fitting sleeve, including:
[0029] Strand tensioning device, casing support bench and strand rotational force testing device;
[0030] The twisted wire tensioning device includes a fixed tensioning frame and a movable tensioning frame, the fixed tensioning frame is fixedly installed, the mobile tensioning frame can be moved and installed, and the two ends of the twisted wire to be tested are respectively fixed on the fixed tensioning frame. frame and mobile tension frame;
[0031] The bushing support stand is used to install the connecting fittings bushing, and the stranded wire to be tested is closely attached to the inner wall of the connecting fittings bushing;
[0032] The twisted wire rotation force testing device includes a rotation force drive assembly, a transmission assembly and a force measuring element, the rotation force drive assembly is connected to th...
Embodiment 2
[0062] This embodiment provides a method for testing the coefficient of friction between the stranded wire and the connecting fitting sleeve, including:
[0063] Apply longitudinal pressure to the wiring fitting sleeve to obtain the positive pressure generated on the twisted wire to be tested;
[0064] Drive the twisted wire to be tested to rotate;
[0065] Record the initial rotational force of the twisted wire to be tested relative to the wiring fitting sleeve;
[0066] According to the positive pressure and the initial rotational force generated on the strand to be tested, determine the friction coefficient between the strand to be tested and the wiring fitting sleeve.
[0067] The friction coefficient test method of this embodiment is realized by the friction coefficient test device of embodiment 1, please refer to embodiment 1 for the specific device structure.
[0068] Optionally, the coefficient of friction between the stranded wire and the sleeve of the wiring fittin...
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Abstract
The application relates to a device and method for testing the friction coefficient of a stranded wire and a connecting fitting casing, including: a stranded wire tensioning device, a casing support stand, and a stranded wire rotational force testing device; a stranded wire tensioning device for using To test the tension of the twisted wires, the two ends of the twisted wires to be tested are respectively fixed on the fixed tensioning frame and the mobile tensioning frame; the casing support stand is used to install the connecting fittings casing; the twisted wire rotation force testing device includes Rotation force drive assembly and load cell, the rotation force drive assembly includes a transmission shaft and a drive mechanism, one end of the transmission shaft is connected to the twisted wire through a fixed tension frame, and the other end of the transmission shaft is connected to the drive mechanism The power take-off shaft is mechanically connected, and the load cell is mounted on the drive shaft.
Description
technical field [0001] The application belongs to the technical field of testing overhead power transmission wires, and in particular relates to a friction coefficient testing device and method for stranded wires and splicing fitting sleeves. Background technique [0002] Overhead transmission lines are the "skeleton" and "vein" of a strong and intelligent transmission network. At present, the long-distance pulling and stringing process is widely used, but the manufacturing length of the wire is fixed, generally 2500m. Therefore, for long-distance construction, connecting fittings must be used to realize the connection between the wires to meet the long-distance construction. [0003] The existing crimping-type splicing fittings and pre-twisted splicing fittings have many problems in service safety, large influence of human factors, difficult control of splicing quality and complicated construction process. [0004] The realization of the grip strength of the non-crimping ...
Claims
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 叶中飞党朋蔡西川卢明庞锴吕中宾伍川陶亚光张博宋高丽李梦丽
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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