The conveyor belt with synthetic fiber and steel wire rope core as the skeleton accounts for about 80% of the total conveyor belt in China. The V-belt of rope structure is close to 80%, which is close to the international advanced level. Since 2003, the country has implemented the production license system of flame-retardant conveyor belt and automobile V-belt, which has greatly promoted the improvement of the quality level of China's adhesive tape products. Flame-retardant conveyor belts include four types: fabric core flame-retardant conveyor belts (PVC and PVG) for underground coal mines, wire rope core flame-retardant conveyor belts for coal mines and general flame-retardant conveyor belts. In addition, there are heat-resistant conveyor belts and endless conveyor belts. Its output accounts for about 1/3 of the total output of conveyor belts. Because the flame-retardant conveyor belt requires flame retardancy and electrostatic conductivity, and it is used in flammable and explosive places controlled by the state, the technical content of its products is relatively high, and the quality level of this product can represent the quality level of conveyor belt products in China to a certain extent. Automobile V-belts include wrapping type and trimming type. Automobile V-belt is also a high-tech product in V-belt products because of its relatively harsh use conditions, and its quality status can also represent the quality status of V-belt products in China to some extent. Li Hong, secretary-general of the Pipe Belt Branch of China Rubber Industry Association, said that the upgrading of conveyor belt products is to develop layered fabric core conveyor belts and low-smoke and low-toxicity flame-retardant conveyor belts that can meet the needs of coal mines, and realize the industrialization of straight warp, straight weft and core conveyor belts; Improve the technical level of new conveyor belts such as tubular conveyor belts and large inclination conveyor belts, and expand market share. The second is to develop energy-saving, safe and environmentally friendly new products to replace old products. Light conveyor belt is a fine product in conveyor belt, with low investment, low energy consumption, high technology content and high added value of products. With the development of economy, the progress of science and technology and the improvement of modernization, the market demand for light conveyor belts is increasing, and users should be guided to pay attention to the use of light conveyor belts. The third is to strengthen the research and development of special conveyor belts, and further develop large-angle conveyor belts in the form of patterns, barriers, baffles, lifts, and intelligent multifunctional tear-proof conveyor belts.
In 20 10, the rubber conveyor belt industry will fully implement product upgrading, and at the same time, it is necessary to adjust and improve the existing production technology to improve the mechanization, automation, continuity and rationality of the technology and the stability of product quality. 1. The requirements for rollers of large inclination conveyor belts are much higher than those of flat belts. If the same type of belt is used, the model of roller is larger than that of flat belt.
2. Baseband
The base belt of corrugated belt conveyor mainly bears tension, but its lateral stiffness also plays a great role in the performance and effect during use. If the conveyor belt is just too small, it will cause the transverse deformation of the conveyor belt and cause the materials to be scattered. (If CC-56 cotton canvas core conveyor belt is selected, the breaking strength is 56N/mm, the number of core layers is at least 6-including 6 layers, the thickness of upper cover glue is above =4.5mm, and the thickness of lower cover glue is above = 1.5mm).
3. The storage and use methods of large inclination conveyor belts are the same as those of ordinary conveyor belts and heat-resistant conveyor belts.
4. Covered belts should be used for conveyor belts with large inclination angles exceeding 70 degrees. (The advantage of using cover tape is to prevent leakage from damaging the baseband; At the same time, it can also increase the transportation volume of materials). First: claw pulley located at any concave transition of conveyor belt. Practice has proved that the transverse strength of steel wire rope conveyor belt is insufficient. When starting, the repelling pulley causes the local stress of the conveyor belt to be too large, which leads to the tearing of the conveyor belt. Changing the umbrella-shaped part of the pulley into a belt drum can completely solve the problem.
Second, improve the industrial conveyor belt hopper. Improving the hopper of industrial conveyor belt is one of the effective measures to prevent the early damage of conveyor belt. The hopper at the joint of each belt conveyor is improved, so that its ability to pass through foreign objects is increased by 2.5 times. Long and large foreign objects are not easy to get stuck between the funnel wall and the conveyor belt during transportation, which reduces the probability of foreign objects tearing the conveyor belt. The guide baffle at the hopper makes the gap between the hopper and the conveyor belt bigger and bigger along the running direction of the conveyor belt, which solves the problem that coal and gift blocks are stuck between the conveyor belt and the tongue plate, and eliminates the damage of the conveyor belt caused by this. Buffer baffles are installed in the hopper with large drop to prevent materials from directly impacting the conveyor belt. ..