Transmission and converter System Why are most power shift transmissions used with hydraulic torque converters in construction machinery?
A non-rigid Torque Converter using liquid as the working medium is one of the types of hydraulic transmission. The hydraulic torque converter has a closed working chamber in which the liquid circulates. The pump wheel, turbine wheel and guide wheel are respectively connected with the input shaft, output shaft and housing. When the power machine (internal combustion engine, electric motor, etc.) drives the input shaft to rotate, the liquid flows out of the centrifugal pump wheel, passes through the turbine, the guide wheel and then returns to the pump wheel in sequence, and circulates again and again. The pump wheel transfers the mechanical energy of the input shaft to the liquid. The high-speed liquid drives the turbine to rotate, transferring energy to the output shaft. The torque converter transmits torque by generating a change in momentum moment by the interaction of liquid and blades. The main feature of the hydraulic torque converter different from the hydraulic coupling is that it has a fixed guide wheel. The guiding effect of the guide wheel on the liquid makes the output torque of the torque converter higher or lower than the input torque, so it is called a torque converter. The ratio of the output torque to the input torque is called the torque conversion coefficient. The zero-speed torque conversion coefficient when the output speed is zero is usually about 2-6. The torque conversion coefficient decreases with the increase of output speed. The input shaft and output shaft of the hydraulic torque converter rely on liquid connection, and there is no rigid connection between the working components. The characteristics of the hydraulic torque converter are: it can eliminate shock and vibration, overload protection performance and start performance; the speed of the output shaft can be greater or less than the speed of the input shaft, and the speed difference between the two shafts varies with the size of the transmitted torque; Good automatic transmission performance, the output speed will automatically decrease when the load increases, and vice versa; the power machine has a stable working area, and the transient changes of the load will not be reflected on the power machine. The hydraulic torque converter has higher efficiency near rated working conditions, with the highest efficiency being 85%~92%
Transmission And Converter System,Hydraulic Oil Pressure Sensor,Guide Wheel Seat Sdlg,Shantui Loader Torque Converter
Transmission And Converter System,Hydraulic Oil Pressure Sensor,Guide Wheel Seat Sdlg,Shantui Loader Torque Converter Shandong Tianfu International Trade Co.,Ltd. , https://www.tfloaderparts.com
With its unique position in the field of rare earths, niobium has become a hot spot in the market for many years. The largest user of the metal neodymium is neodymium-iron-boron permanent magnet materials. The advent of NdFeB permanent magnets has injected new vitality and vitality into the high-tech field of rare earths. NdFeB magnets have a high magnetic energy product and are called contemporary: "King of Permanent Magnets", which is widely used in electronics and machinery industries for its excellent performance. The successful development of Alpha Magnetic Spectrometer indicates that the magnetic properties of NdFeB magnets in China have entered the world-class level.é’• is also used in non-ferrous materials. Adding an aluminum alloy or a magnesium 1.5 to 2.5% neodymium, can improve the high temperature properties of the alloy, airtightness and corrosion resistance, it is widely used as aerospace materials. In addition, the ytterbium-doped yttrium aluminum garnet produces a short-wave laser beam, which is widely used in the industry for the welding and cutting of thin materials having a thickness of 10 mm or less. Medically, yttrium-aluminum garnet lasers are used instead of scalpels for removal surgery or disinfection of wounds. Tantalum is also used for the coloration of glass and ceramic materials as well as additives for rubber products. With the development of science and technology, the expansion and extension of the field of rare earth technology, the element of strontium will have a wider use of space.
é’•(Nd) Basic knowledge introduction
With the birth of the elements praseodymium, neodymium elements have emerged, the arrival of neodymium rare earth elements active in the field, plays an important role in the earth, and about the rare earths market. î´