Assembling and manufacturing the electric hoist brake, in order to reduce the torque and reduce the size of the brake, the brake is usually mounted on the high speed shaft of the hoisting mechanism, that is, the input shaft of the motor shaft or the speed reducer. Electric hoist This brake generates a constant braking torque by the pressure of the compression spring. It mainly brakes 3 parts of the torque: (1) the maximum static torque that is converted to the high-speed shaft when the rated load decreases; (2) the moment of inertia of the high-speed shaft; (3) The moment of inertia converted to the high speed shaft when the load is lowered.
When the lifting speed is about 10m/min, the torque of the third part only accounts for about 2% of the braking torque. When the rated load is stationary in the air, the brake only brakes the static torque of the first part. The entire software system can be used in another warehouse. The electric hoist adopts the multi-thread programming and control meta-state structure diagram and the intermediate database to read and write information in the design of the monitoring software, which makes the control function flexible and diverse, and the programming idea is clear. It has been used in multiple warehouses and the system is stable and reliable.
In order to prevent the load from falling due to the broken shaft of the transmission system, the load-made brakes are mounted on the slow or medium speed shaft. The electric self-propelled brakes of the electric hoist are mounted on the front-stage medium-speed shaft of the drive reel drive shaft. The brake of the high speed shaft only brakes the moment of inertia of the high speed shaft; the load of the medium speed shaft is used to brake the static moment of the load and the moment of inertia when it descends. Both types of brakes are used for satisfactory results with any load.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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