Fixed clamp cable tensioner

At present, with the rapid development of society, the application of power equipment is more and more extensive, and the demand for power is increasing. It is very important to ensure the safety of power consumption and the stable and safe operation of power grid. However, the existing thread tighteners have many shortcomings, which are manifested in: Constructors usually bend the cable end by manual or simple tools and make the cable end fit under tension, and bind and fix the cable end with metal wires. The cable diameters of different specifications are large and small. When it is necessary to bind and fix the large-diameter cable, it is difficult and limited to operate in the traditional way. Moreover, the binding method is not uniform and random, which makes it difficult to ensure the firmness of the cable end binding. Cable ends are easy to loose and fall off, bringing potential safety hazards. Therefore, it needs to be improved by relevant practitioners.

Technology implementation elements:

In order to overcome the defects of the prior art, the utility model aims to provide a power cable terminal tightener with light structure, simple operation, convenient use and carrying, wide application range and firm clamping.

A power cable terminal tightener comprises a U-shaped bolt, a wire pressing block, two wire pressing blocks, a third wire pressing block and a locking nut sleeve, wherein the U-shaped bolt comprises two end rods and a bottom rod; one end of the two end rods is connected with the bottom rod into a whole; the other end of the two end rods is provided with external threads; the wire pressing block, the second wire pressing block and the third wire pressing block are movably sleeved on the two end rods of the U-shaped bolt in sequence; the locking nut sleeve is connected on the external threads of the two end rods of the U-shaped bolt through threads; the second wire pressing block and the third wire pressing block are locked tightly.

Further, an inward concave arc-shaped surface and a second inward concave arc-shaped surface are respectively arranged on opposite surfaces of the first wire pressing block and the second wire pressing block, and a wire clamping part is formed between the first inward concave arc-shaped surface and the second inward concave arc-shaped surface.

Further, a third concave arc-shaped surface and a fourth concave arc-shaped surface are respectively arranged on opposite surfaces of the second wire pressing block and the third wire pressing block, and a second wire clamping part is formed between the third concave arc-shaped surface and the fourth concave arc-shaped surface.

Further, the surfaces of the first wire pressing block, the second wire pressing block and the third wire pressing block are all coated with insulating material layers, and the surfaces of the bottom rod of the U-shaped bolt and the surfaces of the parts close to the bottom rod on the two end rods are also coated with insulating material layers.

Further, the insulating material layer is insulating plastic or insulating rubber pad.

Further, the bottom rod of the U-shaped bolt is an arc-shaped rod, and the surface of one side of the wire pressing block facing the arc-shaped rod is provided with a limit butting block matched with the contour of the inner surface of the arc-shaped rod.

Compared with the prior art, the utility model has the following beneficial effects:

Firstly, the cable tightener of the utility model comprises a U-shaped bolt, a first cable pressing block, a second cable pressing block, a third cable pressing block and a locking nut sleeve, which are simple in structure, light in weight and convenient to carry and use. When tightening the cable, only a cable is inserted between two cable clamping parts, and then the locking nut is screwed to make the cable pressing block press the cable tightly, so the operation is very convenient. At the same time, the design of the clamping part on the cable pressing block also makes the cable clamping reliable and difficult to loose.