Study Of The Loading System Of The Coal Mining Electrical Traction Based On The Traction Characteristics

With China's coal modernization level unceasing enhancement, the coal production of a variety of coal winning machine in use is also improve toward multi-function, high power, high precision and so on direction, as coal winning machine walking "feet," traction of the shearer.two shoulder ministry not only work when the mobile and non-working hours when the transfer, and its traction speed is also affect the efficiency and the size of the load of the machine, the productivity and performance will have serious consequences, the working reliability and speed stability directly affect the production. With high yield and high efficiency are demanded the coal mining machine appear the installed power and traction, and to face increased production more safe and reliable, according to China's current maintenance and manufacturing all kinds of coal winning machine types and future development trend, in accordance with the original coal industry standard "and the coal mining machine factory experiment technology requirements" specified requirements, all the maintenance or new manufacturing coal winning machine, before delivery to the required performance test and loading test.Therefore, combining with the actual and scientific research projects, developed a set of reactive performance advanced electric traction shearer.two double traction department to perfect synchronization loading test rig, the quality inspection of coal winning machine, improve the coal mining machine link maintenance level and manufacturing quality, thus improving the working reliability of coal winning machine, ensure the high yield and high efficiency in our coal mines have very important significance.This paper combined with previous coal winning machine loading test experience,, and on the basis of innovative puts forward coal winning machine around the scheme of synchronous loading traction, two traction department and around at the same frequency conversion control system test-bed, loading achieving synchronization. And the frequency converter for over electric current, over voltage and low voltage, phase lack, leakage current test. Establish coal winning machine traction with loading test, frequency converter of test and the coordinated response speed performance test complete test system, the successful development of the rig, it not only can improve traction shearer.two loading test accuracy of flat, and reduce human factors, to improve test efficiency, still can greatly reduce spending and make great economic benefits and application value.Coal winning machine double traction department synchronous loading test bench success, is scheme of traction shearer.two loading, first proposed of traction department synchronization about electric loading technology, combining realization, inverter frequency control overall loading test, is not only the loading test of the traction box, but for the electric appliances components, such as loading test of frequency. Double traction of the realization of synchronous loading test, can make the coal winning machine traction department loading technology go up to a new stage, and also for coal winning machine machine loading test explore more perfect test technology.