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Lead crimping tube

A technology of crimping tubes and wires, which is applied in the direction of connecting contact materials, connections with permanent deformation, multi-core cable end parts, etc., which can solve problems such as poor connection effect and difference in crimping stress

Inactive Publication Date: 2012-05-09
江苏华厦电力成套设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for the latter, if the common crimping tube is used, since the yield strength of the steel core and the aluminum stranded wire are different, the crimping stress will be different, resulting in poor splicing effect

Method used

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Examples

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Embodiment Construction

[0018] The present invention as Figure 1-7 As shown, the outer surfaces of the nozzles at both ends of the crimping tube 1 are provided with a taper 10 .

[0019] The inner diameter of the crimping tube 1 is larger than the wire ( figure 2 ACSR or Image 6 The aluminum stranded wire 4) has an outer diameter of 1-5%, and the ratio of the inner diameter of the crimping tube 1 to the length of the crimping tube 1 is 1:5-20.

[0020] Conductor is provided with steel core 30 (i.e. as figure 2 The steel-cored aluminum stranded wire in it), the outside is the aluminum stranded wire layer 3, and the connection pipe 2 is also provided in the crimping pipe 1, and the connection pipe 2 inner diameter is 1-5% greater than the steel core 30 outer diameter.

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Abstract

The invention provides a lead crimping tube and relates to a lead link fitting. The lead crimping tube has advantages of high connection reliability and good effect. The lead crimping tube is characterized in that: tapering is formed respectively at outer surfaces of orifices of two ends of the tube; the internal diameter of the tube is larger than 1 to 5% of the external diameter of the lead; and a ratio of the internal diameter of the tube to the length of the tube is 1 to 5-20. According to the invention, in order to avoid an occurrence of a corona phenomenon at a step between a crimping tube and a lead after the crimping, outer surfaces of orifices of the crimping tube are arranged in a tapering mode; and an optimally selected mode is as follows: the mode of transition to an inner bore edge of the tube is arranged into a curved one. In addition, with regard to an occurrence of a steel-cored aluminium strand product, a connecting tube is added; crimping and connection are carried out on the steel core and then crimping is carried out on the aluminium stranded wire; therefore, a main stretching load is exerted on the steel core and it is avoided the aluminium stranded wire for power transmission is stretched too much. Moreover, the lead crimping tube has high connection reliability and a good conducting effect is realized after the connection.

Description

technical field [0001] The invention relates to a wire connecting fitting, in particular to a pre-twisted wire connecting tube reinforced connecting tube. Background technique [0002] A very large number of crimping tubes are used on the power overhead line, and the steel core part and the aluminum layer part of the steel-reinforced aluminum stranded wire are respectively connected in layers by hydraulic pressure or clamping technology. At present, the structural forms of the conductors are diversified, including ordinary aluminum stranded wires and aluminum stranded wires with steel cores. Especially for the latter, if the common crimping tube is used, the crimping stress will be different due to the difference in yield strength between the steel core and the aluminum stranded wire, resulting in poor splicing effect. Contents of the invention [0003] Aiming at the above problems, the present invention provides a wire crimping tube with high connection reliability and g...

Claims

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Application Information

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IPC IPC(8): H01R4/20H01R4/60H01R11/11
Inventor 庄大清庄大宏郭树龙王建虎庄杰
Owner 江苏华厦电力成套设备有限公司
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