Cold shrinkable cable lug

Abstract

The invention relates to a cold shrink type cable terminal, and discloses a cold shrink type cable terminal capable of performing double-layer shrink wrapping sealing on a cable. The umbrella skirts are expanded to form the cable terminal which is not extruded to deform. The terminal is characterized in that one end of a first pipe sleeve is connected with one end of an umbrella skirt pipe, the pipe wall of the other end of the first pipe sleeve is sunken inwards to form a cutting groove, the cutting groove is close to the other end of the first pipe sleeve, a top pressing plate is fixedly arranged in the first pipe sleeve, the top pressing plate is close to the other end of the first pipe sleeve, the top pressing plate is positioned above the cutting groove, one end of the second pipe sleeve is connected with the other end of the umbrella skirt pipe, the wall of the second pipe sleeve is sunken inwards to form a cutting groove, the cutting groove is close to the other end of the second pipe sleeve, an air nozzle is arranged at the other end of the second pipe sleeve, the length of the first pipe sleeve is larger than the sum of the length of the second pipe sleeve and the length of the umbrella skirt pipe, and a middle air cavity is formed in the umbrella skirt pipe.

Description

technical field [0001] The invention relates to a cold-shrinkable cable terminal, which relates to a cable terminal that seals and shrinks the cable connection end when the cable is connected, and belongs to the field of cable communication. In particular, it relates to a cable terminal capable of performing double-layer shrink-wrapping and sealing on the cable, and the shed shed is inflated and formed without being extruded and deformed. Background technique [0002] At present, there are mainly two types of cold-shrinkable terminals for medium and low-voltage cables, which are also the main types of all cold-shrinkable terminals on the market. The first type of cold-shrinkable structure includes the insulator body and the internal stress control tube. Put the whole body on the stripped cable, determine the position, and then pull out the internal stress control tube, so that the insulator body shrinks and wraps on the cable for insulation protection; [0003] The second t...

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Problems solved by technology

[0004] In the above two schemes, the cost is high, the structure is complicated, and there are many steps to use, and the shed can only be expanded after shrinking, and it is initially in a state of extrusion deformation, shrinking or resulting in incomplete deformation of the shed, and silicone oil / silicon grease is used at the same time There are environmental issues

[0005] Publication number CN105337241A discloses a cold-shrinkable terminal for power cables, including an insulating body and stress control glue. When the cold-shrinkable terminal is installed on the power cable, the stress control glue is filled in the space between the insulating body and the power cable. In the gap, in order to prevent partial concentrated discharge at the end of the power cable, the device draws out the support structure of the cold shrinkage structure by using the recovery of the support tube to form a cold shrinkage. The support tube is used, and the preparation and processing process is complicated and the cost is high. , and the umbrella skirt is also formed after shrinkage, and the deformation and extrusion are serious

[0006] Publication number CN202949200U discloses a cold-shrinkable terminal for power cables. The power cable includes a conductor core, an insulating layer wrapped on the conductor core, and a conductive shielding layer wrapped on the insulating layer; the cold-shrinkable terminal includes: insulation a body having a first end and a second end opposite to the first end; and a stress control tube disposed inside the insulating body and close to the second end of the insulating body, which adopts a structure of only a single Layer shrinkage structure, relatively poor wrapping for cables

[0007] Publication number CN203352122U discloses a cold-shrinkable terminal assembly, including: a support tube, a layer of grease is coated on a section of the outer wall of the support tube; and a cold-shrinkable terminal, the insulating body of the cold-shrinkable terminal is pre-expanded to On the support tube coated with a layer of grease; the device is filled with grease, after assembly, the structural integrity of the umbrella skirt is poor, and the support tube structure is also used, and the overall cost is high

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