Manufacturing method of buried cable

Abstract

The invention discloses a manufacturing method of a buried cable. The method comprises the steps of manufacturing J-shaped connecting wire clamps, peeling off insulating layers and outer jacket layers outside main cables, connecting the J-shaped connecting wire clamps and conductors, connecting U-shaped clamps, and injection molding and sealing. According to the design length of the cable which is produced by using the method, a waterproof branch opening is pre-manufactured on the cable, a branch opening is not required to be re-manufactured, a waterproof plug of the cable is plugged into a reserved socket of the cable at the branch opening, and external sealing is performed; and thus a sealing effect of a cable joint is greatly improved, and the cable is required to be unwound for one time during cable laying. Compared with the conventional agricultural buried cable, unwinding time is greatly shortened, unwinding difficulty is reduced, the probability of cable damage in the unwinding process is reduced, the cable can stably operate after being laid, and after the cable with certain length is laid, the cable can be extended due to the socket reserved at the end of the cable.

Description

technical field [0001] The invention relates to the field of electrical machinery and equipment manufacturing, in particular to a method for manufacturing underground cables. Background technique [0002] At present, there are two types of low-voltage power supply lines used for power supply in farmland: overhead lines and buried lines. Compared with overhead lines, buried lines do not need poles, porcelain insulators, pull wires and other materials, which can save a lot of electricians. material, and because the buried wire does not need to consider the tension of the cable's own weight, in the farmland, the cross section of the cable and the length and direction of the line can be selected more flexibly. The numerous wire poles bring great convenience to field farming and save a lot of cultivated land. Since the buried lines are underground, they are not easy to be attacked by natural disasters such as violent storms, heavy snow and freezing, and there is no common downsid...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two types of low-voltage power supply lines used for power supply in farmland: overhead lines and buried lines. Compared with overhead lines, buried lines do not need poles, porcelain insulators, pull wires and other materials, which can save a lot of electricians. material, and because the buried wire does not need to consider the tension of the cable's own weight, in the farmland, the cross section of the cable and the length and direction of the line can be selected more flexibly. The numerous wire poles bring great convenience to field farming and save a lot of cultivated land. Since the buried lines are underground, they are not easy to be attacked by natural disasters such as violent storms, heavy snow and freezing, and there is no common downside of overhead lines. Pole, disconnection and other accidents can also effectively avoid farmland fires caused by line failure or damage or other various reasons during the busy farming season, further ensuring the safety of people's lives and property. Install the branch lines according to different distances, and the joints at the installation positions need to be well waterproofed. Since the branch positions are generally close to the water source, they are easily corroded by moisture and cause the cable to be short-circuited to the ground, thereby affecting the normal use of the cable, and there are certain At the same time, when traditionally producing branch cables, the technical requirements are relatively high, the stability is difficult to control, and it is not flexible enough, and the installation is inconvenient. If the design is changed, it is not easy to respond quickly and effectively.

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