The DYT and DYTB series electro-hydraulic push rods are suitable for reciprocating linear (or reciprocating rotational) movement, and can be used in applications where objects need to be lifted, lowered, or clamped. 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.

Principle and Function:

1. Working Principle: The electro-hydraulic actuator 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 travels 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 increase to the set pressure. The overflow valve will then quickly and accurately overflow, achieving automatic overload protection. Although the motor is 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. Once the motor stops rotating, the piston rod immediately stays at a specific 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 according to customer requirements.

6. The travel range can be infinitely adjusted within the designated travel distance 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. Features reliable overload auto-protection, ensuring the motor can operate normally even under overload or at the end of travel, without damaging other components. Electric actuators and electric actuators are not comparable.

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 infinitely adjust its thrust and pull force within its rated range, thus offering a broad driving force range, which is not achievable with electric push rods or cylinders.

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

5. The electro-hydraulic push rod uses full hydraulic transmission, offering sensitive operation and smooth running, effectively mitigating external shock forces, and precise stroke control that cylinder, electric push rod, and electric actuator cannot achieve.

6. The electro-hydraulic push rod employs an all-in-one, fully enclosed mechanical, electrical, and hydraulic structure. The working oil circuit circulates within a pressure-free, sealed steel cylinder, featuring a compact size, no oil leakage, and ease of installation and maintenance. Under harsh conditions, it does not attract dust, allow water intrusion, or corrode internally, resulting in a longer service life than pneumatic cylinders, electric push rods, and electric actuators.

7. Low investment required. Pneumatic cylinders necessitate the construction of expensive air compressor stations, with the risk of frequent leaks in the pressure pipes, unstable pressure, and high noise levels; hydraulic cylinders require the establishment of a hydraulic station, whereas electro-hydraulic push rods can be used simply by connecting to the power supply.

8. Easy to repair. In special cases, the electro-hydraulic actuator only requires replacement, whereas the hydraulic cylinder necessitates a gradual identification of the fault cause followed by 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, Pneumatic Cylinder