What Is a High-Pressure Cylinder?
A high-pressure cylinder is an actuator that utilizes a motor to rotate a ball screw, thereby pushing or pulling a high-load object in a linear direction. Unlike conventional hydraulic cylinders, which require a pump for operation and maintaining thrust, high-pressure cylinders do not need a pump. This results in reduced power consumption.
An advantage of high-pressure cylinders is their simple system configuration, as they do not require oil transport piping. Only cable connections are needed to drive the motor.
In case of a power failure, the load is maintained by the operation of the motor with a brake, thus preventing fall accidents.
Uses of High-Pressure Cylinders
High-pressure cylinders are primarily used in heavy machinery, construction machinery, and agricultural machinery that require high-load linear motion. They are utilized for locking machine parts, opening and closing doors, and adjusting the angles and positions of various components. These cylinders are also employed for lifting and lowering heavy objects.
In the medical field, high-pressure cylinders facilitate the movement of wheelchairs and beds with their lifting and lowering functions.
The maximum thrust of high-pressure cylinders is designed according to the target load, and they operate across a wide range of temperatures, from low to high.
Principles of High-Pressure Cylinders
High-pressure cylinders consist of a motor, a gear head, and a ball screw, working together to achieve linear expansion and contraction motion. The rotational motion generated by the motor is transmitted to the gear head, causing it to rotate.
As the gear head is connected to a ball screw, the screw extends or retracts depending on the rotation direction of the head, thus adjusting the extent of expansion or contraction. A ball screw is a component comprising a nut or bearing ball attached to a threaded rod, allowing the conversion of rotational motion into linear motion.
This design enables precise control over parameters such as position and speed in linear motion. The motion is stable even at low speeds and transitions smoothly during acceleration.
Therefore, high-pressure cylinders can be reliably used for multi-point stopping and other precise control applications.