Tension joint for overhead line
A technology for connecting fittings and overhead lines, applied in the direction of needle point/slotted plate contacts, circuits, connections, etc. used to penetrate insulated wires/cable core wires, it can solve problems such as poor firmness and easy loosening, and ensure stability Reliability, excellent anti-loosening effect
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Embodiment 1)
[0016] This embodiment is a connection fitting for overhead lines, see Figure 1 to Figure 4 As shown, it includes a core tube 2, two sets of pressing jaw assemblies 3, two flat nuts 4 and two sets of crimping assemblies.
[0017] The tube wall of the core tube is provided with six radial limiting sliding holes 22, and each radial limiting sliding hole runs through the core tube tube wall along the radial direction of the core tube; each radial limiting sliding hole is located in the axial direction of the core tube. In the middle part of the top, the radial cross-sectional shape of each radial limiting hole is I-shaped; the inner peripheral wall of the core tube is provided with an annular stopper 23 protruding inward. In this embodiment, the six radial limiting holes are divided into two groups, and the three radial limiting holes in each group are used for matching with a corresponding set of pressing jaw assemblies.
[0018] Each set of crimping components is used to adap...
Embodiment 2)
[0032] This embodiment is basically the same as the above-mentioned embodiment 1, the difference is that: see Figure 5 and Image 6 As shown, at least one crimping piece 1 is provided with a mounting screw hole 15 penetrating through the pressing plate part in the radial direction of the core tube; a temperature sensing device 8 is fixed in the mounting screw hole.
[0033] The temperature sensing device 8 includes a metal housing 81 made of metal material with a containing groove 811, a temperature sensor 82 arranged in the containing groove, and a spring 83 for crimping the temperature sensor on the bottom wall of the containing groove , The screw pipe plug 84 that is used for limit spring.
[0034] One end 812 of the metal shell close to the central axis of the core tube is provided with a heat conduction boss 813 used as a puncture, and one end 814 of the metal shell away from the central axis of the core tube is provided with an inner hexagonal screw groove 815; There ...
Embodiment 3)
[0042] This embodiment is basically the same as the above-mentioned embodiment 2, the difference is: see Figure 7 As shown, a current transformer 9 is sleeved and fixed on the outer peripheral wall of the crimping piece in this embodiment, and the current transformer 9 includes a ring-shaped induction body 91 and an intelligent control module 92; the overall shape of the intelligent control module is also ring-shaped; the ring-shaped The sensing body 91 and the intelligent control module 92 are arranged side by side.
[0043] The inner peripheral wall of the intelligent control module 92 is provided with two sockets protruding inward (not shown in the figure), and each socket is inserted into a corresponding socket, so that the temperature sensor and the intelligent control module connected to the central control circuit in the
[0044] This embodiment can be used to clamp three phase cables. At this time, this embodiment as a whole can be used as a high-voltage zero-sequenc...
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