升降貨梯http://www.jntr168.com/所用的馬達(dá)，要能承受極頻繁的啟動(dòng)、停止和換向作用；能在重載下起動(dòng)，就是要有較高的起動(dòng)轉(zhuǎn)矩，以及較小的起動(dòng)電流。對(duì)于這三個(gè)要求，直流馬達(dá)要比交流馬達(dá)來(lái)得合適一些，但是普通市內(nèi)電源，都是三相交流的。如果要用直流馬達(dá)，必須裝有直流設(shè)備，改變交流為直流。
Cargo lifter motor used to be able to withstand extremely frequent starting, stopping and reversing the role; can start under heavy load, is to have a high starting torque, as well as smaller starting current. For these three requirements, the DC motor AC motor is more appropriate than some, but ordinary city power, are three-phase AC. If you use DC motors, DC equipment must be installed to change the AC to DC.
 
一般工廠內(nèi)的升降貨梯，所用的馬達(dá)多數(shù)是交流三相感應(yīng)型的，無(wú)論是鼠籠型或者滑圈型的都可。為了要有較高的起動(dòng)轉(zhuǎn)矩，馬達(dá)的馬力，常比實(shí)際需要的馬力，約大三分之一左右，鼠籠型馬達(dá)，多用于低速，而滑圈型馬達(dá)，則用于速度較高的升降貨梯。 又有一種變速的交流感應(yīng)馬達(dá)，是在同一定子槽內(nèi)，埋放二套線圈這樣可以得到二種速率。在起動(dòng)時(shí)，用高速線圈；需要減速時(shí)，可趁高速線圈仍接于電源時(shí)，將低速線圈亦接于電源，然后關(guān)斷高速線圈，將低速線圈的電阻，加以短接。這種變速的手續(xù)，亦可由定時(shí)繼電器來(lái)完成。
General cargo lifter within the plant, most of the motor used is a three-phase AC induction type, either squirrel cage or slip ring type available. In order to have a high starting torque, motor horsepower, horsepower often than actually needed, about one-third larger, squirrel cage motor, used for low-speed, and slip ring type motor is used for higher speed the cargo lifter. Harboring a variable speed AC induction motor, the stator is in the same slot, put the two sets of coils buried so obtained two kinds of rates. When starting with a high-speed coil; when the need to slow down, you can still take advantage of high-speed coil connected to the power supply when the coil is also connected to the low-power, high speed and then turn off the coil, the coil resistance at low speed, to be shorted. This shift procedure, can also be done by a timing relay.  

升降貨梯：http://www.jntr168.com/