The DYT and DYTB series electro-hydraulic push rods are suitable for reciprocating linear (or reciprocating rotational) motion, and can be used in applications for lifting, lowering, or clamping workpieces. They are also ideal for long-distance and high-altitude hazardous areas and can be networked with 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. Operation Principle: The electro-hydraulic push rod is powered by an electric motor, which, through forward (or reverse) rotation, drives the hydraulic oil to be output as pressure oil via a bidirectional gear pump. The oil then flows through an integrated oil block to the working cylinder, thereby achieving 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 circuit will rise to the set pressure. The relief valve will then rapidly and accurately overflow, achieving automatic overload protection. Although the motor is rotating, it will never be burned out.

3. Locking Function: The hydraulic push rod's oil circuit assembly includes a pressure locking mechanism. Once the motor stops rotating, the piston rod immediately stays at a certain position, and the pressure oil remains in a pressure-holding state.

4. Speed can be infinitely adjusted within the designated speed range according to customer requirements.

5. Push and pull forces can be infinitely adjusted within the designated output power range, as per customer requirements.

6. Can be infinitely adjusted within the designated stroke range according to customer requirements.

Comparison with Similar Products

The electro-hydraulic push rod has the following advantages compared to electric push rods, electric actuators, hydraulic cylinders, and pneumatic cylinders:

1. Boasts reliable overload auto-protection, allowing the motor to continue running normally even under overload or at the end of its stroke, without damaging other components. Electric actuators and execution mechanisms simply can't compete.

2. Hydraulic push rods can be started under load, whereas it's difficult for electric push rods and electric actuators to do so.

3. On the same electro-hydraulic push rod, the thrust and pull force can be infinitely adjusted within its rated range, thus offering a broad driving force range, which is not achievable with electric push rods or cylinders.

4. At the same thrust and speed, the electro-hydraulic actuator consumes half the electrical energy of an electric actuator and an electric actuator assembly.

5. The electro-hydraulic push rod uses full hydraulic transmission, featuring sensitive operation, smooth running, and effective reduction of external impact forces. It offers precise stroke control that is not achievable with cylinders, electric push rods, or electric actuators.

6. The electro-hydraulic push rod features an all-in-one mechanical, electrical, and hydraulic enclosed structure. The working oil circuit circulates within a pressure-free enclosed steel cylinder, offering a compact design, oil-tightness, and ease of installation and maintenance. It resists dust and water in harsh environments, prevents internal rusting, and boasts a longer service life compared to cylinders, electric push rods, and electric actuators.

7. Low investment required. Pneumatic cylinders necessitate the construction of expensive air compressor stations, with vulnerable air pipes prone to leakage and unstable air pressure, leading to high noise levels; hydraulic cylinders require a hydraulic station, whereas electro-hydraulic actuators can be put into use simply by connecting to a power source.

8. Easy to Maintain. In special cases, the electro-hydraulic actuator only requires replacement, whereas the hydraulic cylinder needs to be thoroughly diagnosed for the fault cause before meticulous repairs can be conducted, which can disrupt the normal operation of the entire system.

Comparison Chart: Electro-hydraulic Push Rod vs. Electric Push Rod, Electric Actuator, Hydraulic Cylinder, Pneumatic Cylinder