Flexible fireproof cable pre-branching connector and machining and installing method thereof

Abstract

The invention provides a flexible fireproof cable pre-branching connector and a machining and installing method thereof. The flexible fireproof cable pre-branching connector comprises a connector shell formed by joining two symmetrical semi-circular block shells. One end of the connector shell is provided with a main cable incoming opening and a branch cable incoming opening and the other end is provided with a post-connection main cable outgoing opening. The main cable incoming opening, the branch cable incoming opening and the main cable outgoing opening are provided with crimping blocks. Each crimping block is formed by joining two symmetrical semi-circular rings; the inner sides of the semi-circular block shells are provided with grooves; the outer sides of the semi-circular ring crimping blocks are provided with protrusions matched with the grooves in the semi-circular block shells; the inner sides of the semi-circular ring crimping blocks are provided with crinkles matched with the outer surfaces of outer cable sheathes. The symmetrical semi-circular block shells and the symmetrical semi-circular ring crimping blocks are used and the crinkle meshing is used for fixing main cables and branch cables, so that the assembly and the operation are convenient and the firmness and tight sealing of the contact portions between the two ends of the connector and the main and branch cables are guaranteed.

Description

technical field [0001] The invention relates to a cable branch connector and a processing and installing method thereof, in particular to a flexible fireproof cable pre-branching connector and a processing and installing method thereof. Background technique [0002] In the existing flexible fireproof cable pre-branch connectors, when connecting the main and branch cables, each connector body and accessories (fastening nuts, metal compression rings, etc.) need to be inserted in sequence from the head or tail of the main cable. In addition, when the main cable is relatively long, the assembly operation is very complicated. If an accessory is missed, other connectors must be removed and reassembled. If there is a certain fault and damage during operation, the faulty connector will be replaced, and all other connectors will be disassembled when the main cable is not allowed to be disconnected, which is extremely inconvenient and time-consuming to replace. In addition, the exist...

AI Technical Summary

Problems solved by technology

[0002] In the existing flexible fireproof cable pre-branch connectors, when connecting the main and branch cables, each connector body and accessories (fastening nuts, metal compression rings, etc.) need to be inserted in sequence from the head or tail of the main cable. When the main cable is relatively long, the assembly operation is very complicated. If an accessory is missing, the other connectors must be removed and reassembled.

If there is a fault or damage during operation, the faulty connector must be replaced, and all other connectors must be disassembled when the main cable is not allowed to be disconnected. The replacement is extremely inconvenient, time-consuming and labor-intensive.

In addition, the existing branch connectors use metal compression rings to fasten the cables. Since the flexible fireproof cables use copper corrugated tube sheaths, the contact surface between the metal compression rings and the copper corrugated sheaths is small. When the cables are suspended and installed, the cables are easy to Slippage from coupling causing line failure

[0003] The structure of the existing flexible fireproof cable splitter is as follows: figure 1 As shown, the main cable 2 and the branch cable 3 are fixed in the copper pipe shell 1. Since the outer sheath of the flexible fireproof cable is made of copper metal embossed and made into a corrugated shape, the inlet and outlet ports are provided with terminal heads 5 and horns. The mouth-shaped metal compression ring 6 is pressed and locked by the solid nut 7, and the contact surface with the outer sheath can be regarded as a point (that is, the outlet of the branch cable) in terms of the branch cable. Obviously, the The force is limited, which will easily affect the firmness of the connection; at the same time, since the conductor and outer sheath of the flexible fireproof cable are made of copper material, when the cable is suspended and installed, the cable reaches a certain length, and its own weight is quite

[0004] According to the formula F=mg, m—mass, g—constant 9.8; when F 重 ≤F 拉 When , the connection of the outer sheath of the cable branch is static and firm; when F 重 >F 拉 When the connection of the outer sheath of the cable branch is under gravity F 重 Under the action of the branch cable 3 on the splitter, the outgoing line of the branch cable 3 is fixed with a metal compression ring 6, and the bearing force of squeezing and locking through the firm nut 7 is limited, causing the metal outer sheath of the branch cable 3 to be insulated from the main cable 2. 4 disconnected connectors

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