Bidirectional telescoping type horizontal-rotation cable telescoping device

Abstract

The invention belongs to the technical field of cable telescoping devices and particularly relates to a bidirectional telescoping type horizontal-rotation cable telescoping device. The bidirectional telescoping type horizontal-rotation cable telescoping device mainly comprises a telescoping chain arranged on bridge box girders and is characterized in that the telescoping chain comprises a head telescoping joint arranged on the bridge box girder I, a tail telescoping joint arranged on the bridge box girder II, a connecting mechanism arranged between the head telescoping joint and the tail telescoping joint and a cable limit device arranged on the connecting mechanism. The bidirectional telescoping type horizontal-rotation cable telescoping device has the advantages that the device can evidently protect cables, the problem that the cables are excessively squeezed and are broken by pulling during cross-sea bridge operation, safe cable operation and sustainable power supply are achieved, later maintenance is quite convenient, manufacturing cost is low as compared with that of submarine cable laying, and high economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of cable telescopic devices, and in particular relates to a bidirectional telescopic horizontal rotation cable telescopic device. Background technique [0002] With the rapid development of the economy, the connection between the offshore islands and the mainland and between the bays is getting closer and closer. Therefore, the birth of the cross-sea bridge not only solves the problems of power supply and water supply on the islands, but also solves the problems of personnel exchanges and cargo transportation. It can be said to kill three birds with one stone. Compared with laying expensive submarine cables, using cross-sea bridges to lay long-distance cables can lay cables with larger interface sections and deliver greater capacity of electric energy to islands. Moreover, conventional cables are laid on the bridge, and the cables are laid in the bridge, which is convenient for inspection and maintenance, w...

AI Technical Summary

Problems solved by technology

[0004] 1. The current cable telescopic devices basically use the cable as a force transmission tool, and rely on the bending of the cable to drive the telescopic device to move. The entire movement process is that the cable is compressed and stretched, which can easily cause excessive fatigue of the cable and excessive tension of the cable. Squeezing and excessive stretching will cause great damage to the cable, which is a taboo in the use of cables, so that the cable expansion device does not play a good role in protecting the cable;

[0005] 2. Cables with different voltages cannot be protected by the same set of telescopic devices in upper and lower layers.

Sea-crossing cables work in high-temperature, high-salt, and high-humidity environments, and dust is unavoidable during operation. Ordinary guide wheels or ordinary shaft products will soon be rusted or dusty, making the movement of the sliding part inflexible or appearing. Stuck phenomenon, which disables the entire device

Especially when the production of PTFE is applied to the sliding part, when the device encounters an external force and deforms slightly, the PTFE product will be damaged and lose the sliding effect it should play. Polytetrafluoroethylene in such a harsh environment Tetrafluoroethylene products will age quickly, making the device unusable, so the device using this material is not advisable, because there are too many limitations, and the device cannot be used if the bridge body shakes a little bit, which will bring troubles to repair and maintenance. to a lot of inconvenience;

[0007] 4. For the special position of some bridge boxes of the cross-sea bridge, there is no special cable expansion device available for use

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