The DYT, 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, as well as in long-distance and high-altitude hazardous areas. They can also be connected to 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-purpose power source.

Principles and Functions:

1. Operating Principle: The electro-hydraulic push rod is powered by an electric motor. By rotating the motor in either the forward or reverse direction, the hydraulic oil is pressurized through a bidirectional gear pump and sent through an oil manifold block to the working cylinder, thereby achieving reciprocating movement 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, causing the relief valve to overflow rapidly and accurately, 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 designed with a pressure self-locking mechanism. Once the motor stops rotating, the piston rod immediately remains 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 force range according to customer requirements.

6. The stroke can be infinitely adjusted within the designated stroke range as per 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 automatic protection, allowing the motor to continue running normally even under overload or at the end of the stroke, without damaging other components. Electric actuators and electric actuators cannot compare.

2. Electro-hydraulic push rods can be started under load, whereas it's quite 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 electrical-hydraulic 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 reducing the impact force from the outside. It provides precise stroke control, which is not achievable with cylinders, electric push rods, or electric actuators.

6. The electro-hydraulic push rod features a fully enclosed, integrated mechanical, electrical, and hydraulic structure. The working oil circuit circulates within a pressure-free, sealed steel cylinder, 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 required. Pneumatic cylinders necessitate the construction of expensive air compressor stations, with the risk of leaks in air pressure pipes and unstable pressure, as well as high noise levels; hydraulic cylinders require the establishment of a hydraulic station, whereas electro-hydraulic actuators only need to be plugged in to operate.

8. Easy to maintain. In special cases, the electro-hydraulic push rod only requires replacement, whereas the hydraulic cylinder necessitates a gradual identification of the fault cause followed by meticulous repair, which can affect the smooth operation of the entire work.

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