Grinding and ash removing device for insulating tower production line based on vertical weight tensioning method

Abstract

The invention provides a grinding and ash removing device for an insulating tower production line based on a vertical weight tensioning method. The grinding and ash removing device comprises a supportarranged around a workpiece, wherein a plurality of sweeping and grinding wheels distributed around the workpiece are arranged on the support, the sweeping and grinding wheels are connected with thesupport through supporting oil cylinder rods, and a motor controls the sweeping and grinding wheels to slide along the supporting oil cylinder rods through the supporting oil cylinder rods and controls the sweeping and grinding wheels to rotate. According to the grinding and ash removing device, a received downward-pulling tool is conveniently subjected to grinding treatment and ash removing treatment in a vertical production process.

Description

technical field [0001] The invention relates to the field of insulating poles and towers, in particular to a grinding and cleaning equipment for insulating poles and towers production line based on vertical heavy vertical stretching method. Background technique [0002] In the power industry, FRP composite materials are also playing an important role, among which the most widely used and most effective is the transmission line tower. Compared with traditional material towers, fiberglass composite towers have been recognized by countries all over the world for their technical advantages of light weight, high strength, high insulation, and corrosion resistance. Therefore, they have become the target products that are actively developed, promoted and applied in global power grid construction. The manufacture and application of composite poles in foreign countries are mainly concentrated in North America and Europe, among which the research, development and application are most ...

AI Technical Summary

Problems solved by technology

[0006] 1) The process stability of the material is poor. The main molding processes of FRP composite materials include hand lay-up molding, lamination molding, RTM method, extrusion method, compression molding, and winding molding. Among them, pultrusion molding and RTM method have better material stability. And compression molding, the dispersion of material properties is relatively small, but the production process of the latter two methods is more complicated, and the production efficiency is low. At present, the main composite material products on the market still tend to pultrusion molding process;

[0007] 2) The dispersion of material performance is large. Since the performance of FRP composite materials is closely related to the fiber lay-up structure, and the lay-up of fibers in FRP materials is very slow to ensure uniformity everywhere, so the mechanical properties of the material after sampling at different positions There will be deviations in performance, and the dispersion of FRP materials produced by some processes is relatively large, which leads designers to take the lower limit of the test value of the material as much as possible when designing the structure of FRP composite materials, and its structure will lead to excessive performance in material design. Affluence leads to a series of problems such as excessive use of materials, serious waste of materials, and high product costs;

[0008] 3) Long-term environmental aging resistance is poor. FRP composite materials are organic resin composite materials. The weather resistance of organic resins, especially the resistance to ultraviolet aging in sunlight, is the Achilles heel of its outdoor applications. In order to improve the weather resistance of FRP materials, carry out A lot of research on weather resistance of corresponding materials has been carried out, the more common ones are surface weather-resistant coating method and surface weather-resistant material composite method;

Although the large size solves the slowness of the hand lay-up process, the solidification and demoulding links of the winding process still exist, and these two links are the bottleneck of production efficiency. An average set of composite poles takes 2-3 hours to solidify on average, and the cooling time is 0.5 hours. Hours, hoisting and demoulding about 0.5 hours, so the production efficiency of GFRP single-pole tower winding is extremely low, about 6-8 hours for a pole; at the same time, because the fibers of the winding tower cannot be completely laid vertically, the laying of the fibers in the longitudinal direction cannot To maximize the strength, part of the strength will be dispersed in the circumferential direction. In this case, in order to ensure the longitudinal strength of the composite tower, the thickness of the fiber layer can only be increased to ensure the longitudinal strength of the composite tower. The thickness of the tower will increase , the weight also increases, resulting in high cost of composite tower materials

The above production links, whether it is material cost, labor and production management cost are very high, and the production capacity of corresponding products is also extremely low, resulting in the cost of FRP composite pole towers being 3-4 times that of traditional steel pipe towers, which restricts the use of FRP composite poles. Promotion and application

[0015] 2) Although the composite material tower has a greater load-bearing capacity than the traditional tower, due to the low elastic modulus of the material, the modulus of the fiber-reinforced resin matrix composite material is 50-70GPa, which is about half of the steel material. Larger deflection occurs under heavy loads. For example, the bending moment strength of a 10kV composite pole is 2-3 times that of a cement pole, but its failure bending deformation can reach 3 times. The larger deformation limits the application of composite poles and towers. Conducive to the industrialization of composite poles

[0017] Due to the large diameter of the pipe produced by the traditional horizontal pultrusion process, the mold is seriously eccentric from the top to the bottom, and the pultrusion process will be in contact with the air. It is easy to form air bubbles and holes between the layers of the pultruded composite product, resulting in hollowing and eccentricity of the pipe. In addition, due to the gravitational force, the resin soaked in the upper layer will automatically flow downward during the pultrusion process, causing the upper fiber layer to lack resin, and the lower fiber layer to be rich in resin. Seriously affect the strength of the pipe, and the stability of the product is extremely low

[0018] The horizontal pultrusion mold relies on the fulcrum at one end of the mold to fix the mold, and adjusts the eccentricity of the pultruded product through the fulcrum. In the pultrusion of large-scale FRP products, the mold used is very large. Take the 110kV composite material tower as an example. The maximum diameter of the tower can reach 1500mm, so the weight of the mold will be very large. In order to ensure that large-size FRP products can be quickly cured and bent in a short time, the curing heating device should be lengthened, and the corresponding pultrusion mold should also be lengthened, so the weight of the mold will be very high. Surprisingly, it is impossible to fix the pultrusion mold by only relying on one end of the mold to pass the cantilever beam. If the length of the pultrusion mold is shortened, the heat curing time of the product is not enough, and the product cannot be completely cured

[0019] The insulating pole tower production line of the vertical heavy vertical stretching method can overcome various shortcomings of the horizontal placement process, but currently there is a lack of grinding and dust removal mechanism specifically for this production line

Images