The DYT and DYTB series electro-hydraulic push rods are suitable for reciprocating linear (or reciprocating rotational) movements at a certain angle. They can be used in applications where lifting, lowering, or clamping of workpieces is required, as well as in remote and high-altitude hazardous areas. They can also be connected to computers for centralized (programmed) control. They are now widely used in industries such as metallurgy, mining, coal, electricity, machinery, grain, cement, chemicals, water conservancy, and transportation, serving as an indispensable general power source.
Principles and Functions:
1. Working Principle: The electro-hydraulic actuator is powered by an electric motor, which rotates in either direction. This causes hydraulic oil to be output at pressure through a bidirectional gear pump, integrated through the oil path block, and then delivered to the working cylinder, thereby realizing the reciprocating motion of the piston rod.
2. Overload Automatic Protection Function: During the operation of the electro-hydraulic push rod, if the external force on the piston rod exceeds the rated output force or the piston reaches the end position, and the motor continues to rotate, the oil pressure in the oil circuit will rise to the set pressure. The overflow valve will then quickly and accurately overflow, achieving automatic overload protection. Although the motor is still rotating, it will never be damaged.
3. Self-locking Function: The hydraulic push rod's oil circuit module is designed with a pressure self-locking mechanism. When the motor stops rotating, the piston rod immediately stays in a certain position, and the pressure oil remains in a pressure-holding state.
4. Speed can be infinitely adjusted within the designated speed range, as per customer requirements.
5. Force can be infinitely adjusted, within the designated output range, to meet user requirements.
6. Can be infinitely adjusted within the designated travel range according to customer requirements.
Comparison with Similar Products
Electro-hydraulic push rods offer the following advantages compared to electric push rods, electric actuators, hydraulic cylinders, and pneumatic cylinders:
1. Features reliable overload automatic protection, allowing the motor to continue operating normally even under overload or at the end of its stroke, without damaging other components. Electric actuators and electric actuators simply cannot compare.
2. Electro-hydraulic push rods can be started under load, whereas it is difficult for electric push rods and electric actuators.
3. The same electro-hydraulic push rod can be infinitely adjusted within its rated push and pull force range, thus offering a wide driving force range, which is not achievable with electric push rods or cylinders.
4. Under the same thrust and speed, the electro-hydraulic push rod consumes half the electrical energy of an electric push rod and an electric actuator.
5. The electro-hydraulic push rod utilizes full hydraulic transmission, offering sensitive operation, smooth running, and effectively mitigating external shock forces. It ensures accurate stroke control, a feature not achievable with cylinders, electric push rods, or electric actuators.
6. The electro-hydraulic push rod features a fully enclosed mechanical, electrical, and hydraulic integrated structure. The working oil circuit circulates within a pressure-free enclosed steel cylinder, boasting a compact size, oil-tight design, and ease of installation and maintenance. It resists dust and water intrusion and internal corrosion in harsh environments, offering a longer service life than cylinders, electric push rods, and electric actuators.
7. Low investment. Pneumatic cylinders require expensive air compressor stations, with high risk of air leakage in the pressure pipes and unstable pressure, along with high noise levels; hydraulic cylinders need a hydraulic station, while electro-hydraulic actuators only require power connection to be operational.
8. Easy to repair. In special cases, the electro-hydraulic actuator only requires replacement, whereas the hydraulic cylinder needs to be carefully diagnosed for the cause of the fault first before undergoing meticulous repair, which can affect the normal operation of the entire work.
Comparison Chart: Electro-hydraulic Push Rod vs. Electric Push Rod, Electric Actuator, Hydraulic Cylinder, and Pneumatic Cylinder
