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introduction：1The dynamic characteristics of circuit breaker are simulated and analyzed，It is beneficial to realize the optimal design of circuit breaker；The operating characteristics of circuit breaker in fault state are also studied，It can provide theoretical basis for circuit breaker state detection。Study on dynamic characteristics of circuit breakers，The scheme used to be：The kinematic and dynamic equations of circuit breaker moving parts are listed；The appropriate numerical method is used to solve the equations；The motion process and parameters of moving parts are given by visual simulation method[1]。This research scheme is relatively effective for simple motor systems，Especially in low-voltage electrical mechanism motion characteristics
2015-03-31 Reading quantity 2777
introduction：Applicable model： 1、Single column calibration hydraulic press：Y41-2（PYE-2），Y41-10，Y41-10，Y41-10A（PYE-10），SF71002，Y41-25，Y41-25A（П413），PYE-25，Y41-40（П414），Y41-40A，Y41-63（PYE-63），liquid41-63，П415Y41-100（ПA417），liquid41-100A，Y41-160，Y41-160A，Y41-160B。 2、liquid
2015-03-31 Reading quantity 2871
introduction： “Double Luck”Series of complete sets of equipment using perfect cleaning equipment and“Fractional grinding、Graded screening、Impact powder、Square screen、Air extraction”The milling process。 Its outstanding feature： one、Overall plane layout，Province of infrastructure investment，Compact structure，Easy to operate、Easy maintenance，Greatly improve device stability。 two、Adopt high quality energy-saving motor，The power consumption of similar equipment is the lowest in China。 three、New type square screen，Improve the vibration in the screen
2015-03-31 Reading quantity 2787
introduction：DCSIts a decentralized control system(Distributed Control System)Be short for...，The domestic general habit is called distributed control system。It is a multilevel computer system which consists of process control level and process monitoring level and is linked by communication network，Integrated computer(Computer)、communication(Communication)、reveal(CRT)And control(Control)Etc.4Ctechnology，The basic idea is decentralized control、Centralized operation、Hierarchical management、Flexible configuration、Easy configuration。DCSHave the following characteristics： (1)Gao Ke
2015-03-31 Reading quantity 2880
introduction：neiranji zhouxi niuzhuan zhendong Torsional vibration of internal combustion engine shafting torsional vibration of engine crankshaft Internal combustion engine shafting is made of steel or ductile iron，Inherent elasticity，Have inertia，It has its own natural frequency。Under the excitation of harmonic torque，It creates a forced torsional vibration，When the frequency of the excitation torque approaches the natural frequency of the shafting,Torsional vibration amplitude increases sharply,The phenomenon of resonance occurs。Strong resonance can disrupt the normal operation of the internal combustion engine
2015-03-31 Reading quantity 2857
introduction：Water hammer water hammer Karman vortex street Karman street Bernoulli equation Bernoulli equation Laval nozzle Laval nozzle cavitation cavitation damage The Archimedes Principle Archimedes’ principle Fluid kinematics fluid kinematics Nawi－Stokes equation Navier-Stokes equation Mach number Mac
2015-03-31 Reading quantity 2871
introduction：The common forming method of powder metallurgy materials is to compress the metal powder into a rigid closed mold，Higher mold cost；Because the powder fluidity is poor，It is also affected by friction，The compact density is generally low and unevenly distributed，Low strength，thin-wall、It is difficult to form products with slender shape and variable section along the pressing direction。therefore，The following problems should be paid attention to in the design of parts structure by pressing forming。 ⑴Keep it simple、Symmetrical shape，Avoid excessive changes in section and narrow grooves、Spherical scale，To facilitate molding and compaction，As shown in the figure7.3.1As indicated。 ⑵Avoid local thin walls，Compact and prevent with casual powder
2015-03-31 Reading quantity 1416
introduction： GEC…FSASelf-lubricating radial joint 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。]The structure type and overall dimensions ,
2015-03-31 Reading quantity 1530
introduction：1.Enter part origin parameters（G54-G59）1)MODEKnob set“EDIT”；2)According to theMENUOFSETKey to enter the parameter setting page；3)withPAGEDown or up arrow keys inNo1～No3Coordinate page sumNo4～No6Coordinate page（As shown in the figure1）Switch between； figure1No1~No6Respectively correspond toG54~G59 4)withCURSORDown or up arrow keys select the coordinate system；5)Press the number key to enter the address word（X/Y/Z）And values to the input field；6）According to theI
2015-03-31 Reading quantity 2904
introduction：qianru liheqi Embedded clutch jaw clucth Through teeth、A clutch with teeth or keys chimed together to transmit torque，Accordingly, it is called a dental clutch、Tooth clutch and key clutch。Dental clutch is most commonly used（See picture[Jaw clutch]），Both of its joints have raised teeth on their end faces，Jojama、The teeth on the follower joint are inserted or detached from each other，Can make the Lord、The driven shaft is engaged or separated。This clutch works without relative sliding between teeth，Surety master、The driven shaft is strictly synchronized，No friction loss，High transmission efficiency;But when engaged impact
2015-03-31 Reading quantity 2777
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