工作面刮板输送机技术现状与发展趋势毕业论文外文翻译(编辑修改稿)

工作面刮板输送机技术现状与发展趋势毕业论文外文翻译(编辑修改稿)内容摘要：

ontour Help create a slot on the Rolling materials, steel rolling on the surface than the smooth casting of steel, small friction. Central tank plate using highstrength steel hardening Wearresistant, wear little. Rolling in the central trough lateral welding dumbbell Block, will not help reduce the thickness of groove. Forging dumbbell on the design and ensure that the central trough Yaling not Block damage, and the youngest is basically breaking strength of times the dumbbell, so the fault is always the first dumbbell. Another trough of the central structure of the tank from top to bottomofduplication, this form can be set from top to bottom groove and the failure of different conditions for different structural design and material selection, and easy on the replacement tank, will help improve strength and Life. The central trough in the form of SGZ880 / 2 400type doublestranded in the crossside dumping in the face scraper conveyor has been successfully applied. Ring linked Circle as a scraper conveyor chain of traction, its tensile strength directly related to the reliability of. At present, China39。 s largest ring linked to φ42 mm 146mm pact chain, tensile strength of 2270 kN, the largest foreign ring linked to φ48 mm 152mm pact chain, tensile strength of 3550 kN. With the ring linked the increasing size of the central trough of higher and higher, conveyor magnificent performance declined, the gateway if not thorough cleanup will also affect passage of conveyor. So ring linked the direction of development is to improve tensile strength and reduce the high degree of Central legislation. Materials and Technology In order to improve the roundabout chain of tensile strength, the current foreign Grade C and Dlinked ring in the largesized materials with 23 MnNiCrMo54, 23MnNiCrMo54 and 23 MnNiCrMo64 scouring steel, tensile strength limit ≥ 1600 ~ 1800 MPa. Welding Technology: the use of advanced welding equipment, welding and the use of flash returns processing technology, successfully resolved the surfacing of the process of overheating, such as a burning issue. In quality testing, the use of scanning stretch fracture fracture of cables used to pretension ring linked to strengthen technology, greatly enhancing the carrying capacity and fatigue. form and geometry In 1985 the first to create a pany 38 mm 137mm flat chain. Flat is linked 6 each of the chain is still ringCentral, Central was squeezed the flat ring. Flat chain link sliding work to reduce the size of the increase in the chain of slot pressure on the units and improve the legislation of the Central wear resistance。 reduce its high level of the chain more easily through the sprocket, but can also reduce the capacity of power transmission and Bays of a high degree. Modern highperformance conveyor are generally involved in supporting a flat chain. Figure 5 conventional chain and a new widebody linked flat In 2020, the pany has developed a widebody at a flat linked, as shown in Figure 5. It is a highintensity, lowchain, has the following characteristics: ⑴ using this chain can reduce the high scraper chain, thereby reducing the central trough height, eventually reduce the use of highmining, coal mining to meet thin. ⑵ using this chain can reduce the use of power, or power in the same circumstances, increase the length of face, it will greatly reduce the workload of opening up, reducing the number of face move. ⑶ this forging of widebody flat link chain has increased the contact area, can improve the chain link at the same time reduce the intensity of the wear and helps to maintain the rigidity of chain link. Such as a flat 42 mm chain can take 2 855kW of installed power, and 50 mm widebody flat can be linked up to 3 1000kW bear the installed power. intelligent conveyor chain As unable to accurately predict the failure of the chain, according to conventional practices are generally ahead of the replacement of the chain. In 2020 a pany with a number of research institutes to study the development of a conveyor chaindetection system, as shown in Figure 6. This is a bination of integrated sensor technology of intelligent conveyor chain, it will stress the chain of realtime record, the help of microelectronics technology devices, from puters that the chain of life remaining before the fracture. It also can detect the chain of preload, is conducive to life during the period in the chain to achieve the best use of state, improve safety and avoid accidents. The link chain。