【正文】 eatment using puter monitoring and control equipment carburizing atmosphere, and strictly monitor the furnace temperature, carbon potential, control gear and equipment parts used mainly CNC machining centers manufacturing, processing benefit substantially improve accuracy, domestic and foreign panies gear manufacturers in China can reach a GB100095 88 involute gear machining accuracy standard 665 level and above. 3 China scraper conveyor direction of development With coal mine production of intensive development, has a long wall face fully mechanized coal mining equipment and technology has been to the highend development, to meet the production capacity, a high degree of automation, safety and reliability of production requirements. At present, China39。 ⑶ achieved a scraper conveyor loaded with empty and the smooth startup。 ⑸ conveyor of all mechanical, electrical system overload protection, the protection system fast response。 ⑸ dualchamber design, pact, power transmission ponents without mechanical contact, high reliability. ⑹ with water as a working fluid, safe and convenient and cheap, through pipes or water supply, drainage tube through the pump row, row of pressure from the main hydraulic motordriven cycle produced by the pilot of the portfolio directly to the valve To control the water cycle。 sprocket using highstrength alloy steel, of quenching the hardness to eat HRC55, effective hardening depth of 10 mm and above, the service life of up to 400 to 5 million t of the media. In addition, from sprocket on the tooth to be improved, for example, a pany design the GRsprocket and there is great difference between conventional sprocket, which always has three sprocket tooth led the entire load. 3 tooth contact will inevitably reduce the wear chain and sprocket, thereby extending the life of the chain and sprocket, reducing the chain elongation, power transmission efficiency is higher. Softstart devices Foreign advanced conveyor transmission use of softstart technology, in scraper 3 conveyor on the successful use of the softstart main valve control devicefilled hydraulic coupler, CST controllable start and the exchange of electrical transmission system, such as Frequency Control . Because there is no domestic mature technologies and products, the Chinamade highpower scraper conveyor used in softstart device for all imported products. Figure 2 was developed by Germanyfilled hydraulic valve control DTP coupler. hydraulic valve control coupled with the principal technical characteristics ⑴ can achieve the empty scraper conveyor start and overload protection。 1 中文 4410 字 英語翻譯 英文原文 Scraper conveyor of the status quo and development trend of technology Abstract: The Face scraper conveyor of the machine and its head, tail, the central trough, ring linked, softstart devices, ponents of the technical status quo and development trend, and made China39。 D will bee the next scraper conveyor focus on the development, softstart technology, the status of testing, running state control the use of mechanical and electrical integration technology will be Scraper conveyor into the future development of an important symbol 2 Yuan parts of the technical status quo Head With the fully mechanized coal face of rapidly increasing production apacity, scraper conveyorunloading has been difficult to meet the requirements of domestic and foreign large volume of heavy scraper conveyor adopt crosslateral institutions unloaded, the agency after several generations of improvements in the ability to 2 offload , Efficiency, life and other aspects of a big increase. At the same time, unloading a high degree of reduced support for the fully mechanized coal mining has brought convenience. Tail For long distance, highpower scraper conveyor, the chain tension need greater flexibility trip, both at home and abroad using retractable tail, and is divided into manual and automatic tight chain tight chain. Manual tight chain system is regularly measured by the chain of artificial tension, stretching the tail, which can not guarantee the chain will always be in the best state of tension and the automatic system is the ideal tight chain of tension, as shown in Figure 1. The system in the chain and the nose, tail drive sprocket chain from the bottom, a tension sensor placement, in accordance with the actual chain of takeup tension control the fuel tank. This automatic use of the tight chain, conveyor chain operation will always maintain the best state of tens