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introduction：The inlet and outlet of the traditional directional valve is controlled by a spool，The corresponding relationship between the two oil port listening openings has been determined as early as the design and processing of the valve core，It cannot be modified during use，Thus, the flow rate or pressure through the two oil ports cannot be independently controlled，Do not influence each other。 Along with the microprocessing controller、Reduction in the cost of sensor components，Continuous improvement of control technology，The double spool control technology can be applied in the field of construction machinery。BritainUtronicsThe company uses its own technology and patent advantages to develop a double spool multi-way directional valve，Has been widely usedJCB、Deere、DAWOO、
2015-05-06 Reading quantity 2903
introduction：analyzeINAImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]Structural design、Manufacturing process and material quality decide to import bearings[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]Three factors of quality。 INAImported bearing[Imported bearing
2015-05-06 Reading quantity 1599
introduction： bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Fatigue failure is a surface form of failure，The main manifestation is the initiation of fatigue cracks，Expansion and fracture processes，The long-term effects of failure of the metal under alternating loads。The sealed plain bearings are lubricated with specially tested, high-quality lithium based greases。This grease
2015-05-06 Reading quantity 1580
introduction： ug Default metric ugii_env.datInside set。 UGII_DEFAULTS_FILE=${UGII_BASE_DIR}ugiiug_metric.def ugChange unit 1. Its just that the units change and the actual length stays the same. a. Unigraphics NX->UG Command Prompt b. Cd UGII c. Ug_convert_part -in
2015-05-06 Reading quantity 2813
introduction：The drawing die is to draw and press the blank into a hollow body，Or the hollow body is pulled and pressed into a smaller shape of the hollow body without significant changes in plate thickness of the die。 Drawing die structure form 1.Die for the first deep drawing process（table1） 2.Die for subsequent deep drawing process（table2） 3.The reverse drawing die deepens the process parts in the opposite direction of the previous process，Its called reverse drawing。Reverse drawing turns out the inner wall of the process parts，Large contact surface between process parts and die，Material flow resistance is also large，Therefore, the press ring is not required。figure1Is an example of reverse drawing。figure2in
2015-05-06 Reading quantity 2899
introduction：It is the season of flood control and drought relief，Agricultural pumps are widely used，How to properly use and maintain agricultural pumps for irrigation、Drainage and the proper operation and life of the pump are critical。 one、Installation of water pump The installation and calibration of the pump is a critical first step，Although the pump unit has been corrected at the factory，But due to transportation、Assembly and other reasons，Can lead to varying degrees of deformation or loosening，therefore，The water pump should be installed side by side during installation、Edge correction。 1、Mounting polymerization (1)Remove grease and dirt from the base，Place the base on the foundation。 (2)Use a level
2015-05-06 Reading quantity 2901
introduction： one、Improper installation(Account for about16％) 1、Use brute force when installing，Hit the bearing directly with a hammer[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]The greatest damage to bearings；It is the main cause of deformation。 2、Inadequate installation，Mounting is deviated or not installed to the bearing position，Cause the bearing clearance is too small。Inside and outside
2015-05-06 Reading quantity 1462
introduction： INAbearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Usually the space that can be installed is limited。In most cases，shaft（orINABearing diameter）Is based on mechanical design or other design limitations。Bearing type and size，Therefore, bearings in the New Territories North region are selected
2015-05-06 Reading quantity 1459
introduction： Using liquid as the working medium﹐A fluid drive that relies on the hydrodynamic action between the impeller and the liquid to transfer energy。The impeller will power the machine(Internal combustion engine﹑motor﹑turbine)Input speed﹑Torque conversion﹐The working part of the machine is driven by the output shaft。The liquid is loaded with the input shaft﹑Output shaft﹑The impellers on the shell interact﹐Produces a change in the moment of momentum﹐Thus achieving the purpose of transferring energy。Hydraulic transmission and hydraulic transmission by liquid pressure energy to transfer energy in the original
2015-05-06 Reading quantity 2809
introduction：Chemical composition Rolling bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]steel：GCr15，GB/T18254—2000《High carbon chromium bearing steel》 Unified digital code grade chemical composition，％ B00150GCr15&nbs
2015-05-06 Reading quantity 1466
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