围棋少年第二部 www.rqmd.net 2017/06/19 浏览次数：
A cable support in the manufacturing process, from raw materials into iron and steel glass, composite materials, several kinds of engineering plastics, from the installation on the combined cable support, embedded cable bracket insertion type cable support, single fixed type cable bracket.
Two, the power plant and substation in the cable, except for a few buried underground, the remaining majority are installed on the cable bracket, the cable support role generally have the following aspects: 1. The cable is neat, easy maintenance; the layered cable erection, to maintain a certain distance, good heat dissipation; there can be a variety of cables laid separately, to avoid mutual influence, such as control cable and power cable laying separately, high-voltage cables and low voltage cable separately using the cable laying; support cable will hold up, to prevent flooding, mechanical damage etc..
Three, steel cable support is the use of cable support with the longest history in the power system, because of its high strength, can be applied to various occasions, making is simple and convenient, so we use the old power plant and substation cable bracket, basically all is the angle of cable support. The disadvantage of angle steel cable support is that it consumes more steel. In many harsh environmental conditions, such as subway, tunnel, chemical industry, rainy and humid or coastal salt fog and other occasions, the use of steel cable support vulnerable to corrosion, facilities maintenance cost is high, the service life is short.
Four 、 installation mode, combination type cable bracket, easy to install, but the cable trench wall requirements are particularly smooth. The cable layer changes can not be dealt with. The installation of the buried cable support is not convenient, which makes it difficult to construct the cable trench wall, but it can be applied to the design of the cable trench with different layers. The insertion type cable bracket is inconvenient to install and requires smooth formation of the cable trench wall, and can be used for the design of the cable trench with different layers. The single fixed cable bracket is easy to install, requires smooth formation of the cable trench wall, and can be used for the design of the cable trench with different layers.
Five. Composite cable support is mainly composed of reinforcing glass fiber and resin which acts as adhesive and transfer load. The tensile strength of glass fiber is very high. Its content, length and laying form determine the strength of the bracket. The strength of the composites according to the stress conditions, product yield, production process, prices bear ability to design the glass fiber content, length and laying form composite scaffold rigid doubled nylon bracket produced in the United States. Even under long-term load, it will not deform, and there will be no downward inclination of the metal cable bracket used in the subway in some cities in china. Composite scaffolds are corrosion resistant and are especially suitable for use in humid, salt, fog, acid and weak base environments.