Composite cable guide inner pipe outer surface grooving machine

Abstract

The invention discloses a composite cable guide inner pipe outer surface grooving machine which comprises a machine frame. A machining sleeve is installed on the machine frame through a bearing block, a belt pulley arranged in the middle of the machining sleeve is connected with a belt pulley arranged a motor output shaft arranged on the machine frame through a transmission belt, and a grooving device axially arranged perpendicular to the machining sleeve is arranged at one end of the machining sleeve. The composite cable guide inner pipe outer surface grooving machine has the advantages that the structural design is reasonable, operation is simple and convenient, the machining speed is high, efficiency is high, cost is reduced due to the facts that threaded grooves are formed in the outer surface of an inner pipe and glass fibers are wound outside the inner pipe, a glass reinforced plastic pipe formed by the wound glass fibers and the inner pipe are tightly combined into a whole, so that the inner pipe and an outer pipe are prevented from sliding, the heat conductivity coefficient is large, the heat resistance is good, the advantages of glass fiber reinforced plastic is fully exploited, the manufactured pipe is high in rigidity, strong in load anti-pressure ability, strong in foundation settlement resistant capacity and capable of overcoming the shortages that the inner wall of the glass fiber reinforced plastic is not resistant to abrasion and is prone to looseness, a cable can pass through easily, and the phenomenon that the cable is blocked is avoided.

Description

Technical field: [0001] The invention relates to a slotting machine for the outer surface of the inner tube of a composite cable guide. Background technique: [0002] There are basically two types of pipe materials used for plastic cable protection in the market, one is thermosetting plastics, mainly fiberglass pipes, and the other is thermoplastics, mainly PVC, polyethylene, and polypropylene pipes. The advantages and disadvantages of the pipes of these two types of materials are as follows: [0003] Advantages of FRP cable protection pipes: (1) FRP pipes are light in weight, high in rigidity, and strong in compression and subsidence resistance; (2) Large in thermal conductivity and good in flame retardancy, especially when cables are operated underground for a long time; (3) Good weather resistance, the service life can reach 50 years in the environment of -40 ℃ ~ 150 ℃. FRP cable protection pipes are still the preferred pipes in the typical design of the State Grid Corp...

AI Technical Summary

Problems solved by technology

There has been a composite cable protection tube in the market that utilizes the advantages of thermoplastic materials and thermosetting materials to organically combine FRP and polypropylene. However, it simply uses FRP as the outer tube and polypropylene as the inner tube. The method of direct combination, because thermoplastic is a very typical non-polar crystalline material, has low surface tension, large shrinkage rate, poor creep resistance, poor dimensional stability of the product, and is prone to warping deformation. It is difficult to combine with other The materials are adsorbed together, resulting in a gap between the pipes of the two materials, and even in the process of pulling the cable, the inner pipe will be pulled out, which cannot meet the purpose required by the market

Later, after repeated development, the pipes of two different materials were tightly combined into a whole through the intermediate bonding layer. However, in actual research and development, the biggest disadvantage of producing pipes through the intermediate bonding layer is that the bonding force cannot meet the requirements. The required shearing force and tear resistance requirements, it is still easy to cause the inner tube and the outer tube to split and slip when the cable is pulled, which is not conducive to the popularization and use of the product

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