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Application of guide pulley in driving locomotive
The motor is not the only one that can be used to drive the wheels of a locomotive. It is not the only two. The turbine in the hydraulic machinery also has the similar driving characteristics as the motor. Just drive a pump diesel engine, with a certain pressure to the fluid flow at the inlet of the turbine, and be able to work after the completion of the liquid in the turbine flow back to the pump, the fluid dynamic cycle work, this system can be used for diesel locomotive drive system. According to this principle, the German engineer Fettinger created the torque converter and the hydraulic coupler, the turbine and the pump wheel together, there is no mechanical connection between the two and only through the liquid flow cycle interaction. The diesel locomotive uses this kind of "soft" connection way to design the transmission system is called the hydraulic transmission.
Compared with the power transmission, hydraulic transmission is only the bright younger generation. But it A new force suddenly rises. in and electric transmission in the competition, and quickly won the important position. The utility model has the advantages that the motor can not be saved, and the utility model can save a lot of expensive copper, and meanwhile, the weight is lighter. This reduces the cost and reduces the weight of the locomotive, that is, under the same weight of the locomotive, the locomotive power is generally larger than the electric locomotive. In addition, the hydraulic transmission device of high reliability, simple maintenance, repair costs are also less. Another advantage is that parts of it are closed, regardless of wind sand and snow on its work does not produce what bad influence.
The main components of the hydraulic transmission device are hydraulic transmission box, axle gear box, reversing mechanism and the universal shaft. It is the core component of hydraulic transmission box hydraulic torque converter, mainly by the pump wheel, turbine and guide wheel composition. The crankshaft through the pump wheel shaft and gear with the diesel engine is connected through the turbine shaft and gear wheel is connected with the locomotive, the guide wheel is fixed on the torque converter shell, does not rotate. When the diesel engine is started, the pump pulley is driven to rotate at high speed, the pump pulley drives the working oil pressure and flow impact turbine blade is high, the turbine and the pump wheel to rotate in the same direction, then the output power of engine delivered to the locomotive wheel through a gear, so that the operation of locomotive.