What is the pull wire fitting? What is the role of pull wire gold?
Let's first understand what is the "golden tool"?
Iron or aluminum metal accessories widely used for transmission lines, collectively referred to as fittings. There are many kinds of metal fittings, such as various clamps for installing wires, various hanging loops constituting insulator strings, various crimping tubes for connecting wires, repair pipes, and various types of spacer bars on split wires. In addition, in addition to the various types of cable fittings used in pole towers, and the size of the protective conductors, they must be matched.
Most of the metal fittings need to withstand large pulling forces during operation, and some also need to ensure good electrical contact. It is related to the safety of the wires or towers. Even if one is damaged, it may cause line faults. Therefore, the quality, proper use and installation of the fittings have a certain impact on the safe transmission of the line.
Pull wire fitting
Pulling hardware, mainly used to fix the cable tower, including all parts from the top of the tower to the ground cable.
According to the conditions of use, the cable fittings can be divided into three categories: tight line, adjustment and coupling.
Tight-wire parts: used to fasten the end of the cable, and have direct gripping force on the cable.
Adjustment parts: used to adjust the tension of the cable.
Contact parts: for cable assembly.
Commonly used cable gold in transmission lines has wedge clamps, UT clamps, U-rings for pull wires, steel clamps, double pull plates, wedge clamps: the cable ends are connected to the tower, and can also be used as a lightning protection line. Clips.
UT type clamp: adjustable and non-adjustable. It can be adjusted for the lower end of the cable to adjust the tension of the cable. Not adjustable for pulling the wire end.
(NUT type clamp)
The U-ring for the wire is used in conjunction with the wedge clamp and is mounted on the hoop of the tower.
Steel wire clamp: used to fix the cable tail wire and other temporary chucks and auxiliary chucks. It has a small holding force and should not be used as the main fitting for fastening wires.
Double pull wire joint plate: used to assemble two small-section steel strands instead of one large-type steel strand to balance the two pull wires.
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