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Terminal box for cables

A junction box and cable technology, applied in the direction of electrical components, etc., can solve the problems of easy loosening of cable joints and easy failure of sealing, and achieve the effect of simple structure and avoiding falling off

Inactive Publication Date: 2014-09-10
SICHUAN TIANWEI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art that the seal at the joint between the junction box and the cable is easy to fail, and the cable joints in the junction box are easy to loosen under the action of the tension of the cables at both ends, the present invention provides a cable junction box

Method used

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  • Terminal box for cables
  • Terminal box for cables
  • Terminal box for cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 1 to Figure 3 , a cable junction box, including a groove-shaped base 1 and an upper cover 4 connected with the base 1 by bolts or screws, a junction cavity 7 is formed between the base 1 and the upper cover 4, and the side of the base 1 At least one threading pipe 3 is also fixed, and the threading pipe 3 includes a lead tube 31 fixed on the base 1. A through hole with a different diameter is provided on the axis of the lead tube 31, and an internal thread is provided at one end of the through hole with a different diameter. A sealing gasket 32 ​​is embedded in the different diameter through hole, and a compression nut 33 threadedly connected with it is arranged in the internal threaded hole. One end of the compression nut 33 is in contact with one end of the sealing gasket 32, and the sealing gasket 32 The other end of the other end is fixed in position relative to the lead barrel 31, and the sealing gasket 32 ​​and the compression nut 33 are provided w...

Embodiment 2

[0026] The present embodiment is further limited on the basis of embodiment 1, as Figure 1 to Figure 3 , because the base 1 and the upper cover 4 are mostly made of plastic materials in the prior art, no matter for safety considerations or material saving considerations. Failure, the base 1 is fixed with a plurality of threaded seats 8 for connecting the base 1 and the upper cover 4 with bolts or screws, and the threaded seats 8 are all internal threaded metal sleeves embedded in the base 1. In this embodiment The threaded seat 8 is a copper sleeve provided with an internal thread, and the fixed connection between the base 1 and the upper cover 4 is realized through the screw holes 9 provided on the upper cover 4 corresponding to the inner threaded seat 8 one-to-one.

Embodiment 3

[0028] The present embodiment is further limited on the basis of embodiment 1, as Figure 1 to Figure 3 , in order to ensure the sealing performance between the base 1 and the upper cover 4 , a sealing ring 2 is also provided between the connecting end faces of the base 1 and the upper cover 4 .

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Abstract

The invention discloses a terminal box for cables. The terminal box for the cables comprises a base and an upper cover, wherein a wiring cavity is formed between the base and the upper cover, at least one conduit is further fixed to the side face of the base, each conduit comprises a lead cylinder, reducing through holes are formed on the axes of the lead cylinders, internal threads are arranged at one end of each reducing through hole, sealing gaskets are embedded in the reducing through holes, and compression nuts which are in threaded connection with internal thread holes are arranged in the internal thread holes. The terminal box for the cables is simple in structure and good in sealing performance and the explosive-proof performance, and connecting heads of the cables can be connected rapidly and stably.

Description

technical field [0001] The invention relates to a wire and cable protection device, in particular to a cable junction box. Background technique [0002] The underground environment of coal mines is special, and there are flammable gases and dusts. Once the above-mentioned gases and dusts reach the explosion limit and encounter any electric sparks, it is very easy to cause serious production safety accidents. Therefore, all kinds of communication, monitoring, instrumentation and automation in mines It is particularly important for system equipment such as explosion-proof function. [0003] Underground coal mines have many lighting facilities and power equipment, and junction boxes are indispensable equipment in the process of zero-time long line and cable wiring. In the prior art, the seal at the joint between the junction box and the cables is prone to failure, and the cable joints in the junction box are easily loosened under the action of the tension of the cables at both...

Claims

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Application Information

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IPC IPC(8): H02G3/08
Inventor 赵勇吴景棋余庭均陈建
Owner SICHUAN TIANWEI ELECTRONICS