The DYT and DYTB series electro-hydraulic push rods are suitable for reciprocating linear (or oscillating rotational) movement, 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. Now widely used in industries such as metallurgy, mining, coal, electricity, machinery, grain, cement, chemicals, water conservancy, and transportation, they are an indispensable general power source.

Principle and Function:

1. Working Principle: The electro-hydraulic actuator is powered by an electric motor. By rotating the motor in either the forward or reverse direction, it drives the hydraulic oil to be output as pressure oil through a bidirectional gear pump. The oil then travels through an integrated oil circuit block and is delivered to the working cylinder, thereby achieving reciprocating motion of the piston rod.

2. Overload Automatic Protection Function: During the operation of the electro-hydraulic actuator, if the external force on the piston rod exceeds the rated output force or the piston reaches the end position, the motor continues to rotate. At this point, the oil pressure in the oil circuit increases to the set pressure, and the overflow valve rapidly and accurately overflows, thereby achieving automatic overload protection. Although the motor is rotating, it will never be burnt out.

3. Self-locking Function: The oil circuit module of the electro-hydraulic push rod is equipped with a pressure self-locking mechanism. Once the motor stops rotating, the piston rod immediately remains at a fixed 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. Push and pull forces can be infinitely adjusted within the designated output power range, as per customer requirements.

6. The travel can be infinitely adjusted within the designated travel range according to customer requirements.

Comparison with Similar Products

Hydraulic Push Rods offer the following advantages compared to electric push rods, electric actuators, hydraulic cylinders, and pneumatic cylinders:

1. Boasts reliable overload automatic protection, allowing the motor to continue running normally even when overloaded or at the end of its travel, without damaging other components. Electric actuators and electric actuators cannot compare.

2. Electro-hydraulic push rods can be started under load, whereas it is difficult for electric push rods and electric actuators to do so.

3. The same electro-hydraulic push rod can be infinitely adjustable within its rated pushing and pulling force range, thus offering a wide driving force range, which is something that electric push rods and cylinders cannot achieve.

4. Under the same conditions of thrust and speed, the electro-hydraulic push rod consumes half the electrical energy of an electric push rod and electric actuator.

5. The electro-hydraulic push rod utilizes full hydraulic transmission, offering sensitive operation and smooth running, effectively reducing external impact forces. It provides accurate stroke control, which is 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 tube, offering a compact design, no oil leakage, and ease of installation and maintenance. It resists dust and water in harsh environments, prevents internal rusting, and has a longer service life compared to cylinders, electric push rods, and electric actuators.

7. Low investment. Pneumatic cylinders require expensive air compressor stations, with vulnerable air pressure pipes prone to leakage and unstable pressure, along with high noise levels; hydraulic cylinders necessitate the construction of hydraulic stations, whereas electro-hydraulic actuators can be used simply by connecting to the power supply.

8. Easy to maintain. 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 affects the normal operation of the entire work.

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