In the early days, the linear actuator was a very commonly used linear transmission device, which was moved by the rotation of the motor. Linear actuators are widely used because of their easy installation and simple operation.
Once in the domestic mechanical industry, the first choice for linear motion execution products was the combination of cylinders, hydraulic cylinders, and rack and pinion reducers. Linear actuators, screw elevators, and electric cylinders were rarely used. Cylinders and hydraulic cylinders have their own advantages, such as fast cylinder speed, compact size, large hydraulic cylinder thrust, overload unloading, and frequent use.
In the late 1990s, with the increase of imported equipment, the domestic conversion of foreign drawings, and the domestic procurement of push rod products, linear actuators and screw elevators were gradually known by domestic mechanical design and development personnel. The use of linear actuators and screw elevators, Advantages Easy installation, simple structure, maintenance-free, not affected by the environment, air source, and hydraulic source. Especially the mechanical synchronization and mechanical self-locking are better than the cylinder and hydraulic cylinder.
If there is no air source or hydraulic source, the linear motion mechanism is not Many, separate gas distribution stations or hydraulic pump stations, the cost is relatively high, linear actuators and screw elevators only need to use power, this aspect has obvious advantages.
For a period of time, linear actuators mainly rely on imports, which has high cost and long cycle time.