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, as well as in long-distance and high-altitude hazardous areas. They can also 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-purpose power source.

Principles and Functions:

1. Operating Principle: The electro-hydraulic push rod is powered by an electric motor, which, upon rotating in either direction, drives the hydraulic oil to be outputted as pressure oil through a bidirectional gear pump. This oil then travels through an integrated oil path block to the working cylinder, thereby realizing the 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 rise to the set pressure. The overflow valve will then quickly and accurately overflow, thereby achieving automatic overload protection. Although the motor is rotating, it will never be damaged.

3. Locking Function: The oil circuit module of the electro-hydraulic push rod is equipped with a pressure locking mechanism. Once the motor stops rotating, the piston rod immediately remains in 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 force can be infinitely adjusted within the specified 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

Hydraulic and electrical 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 operate 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 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 electrical-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 movement. It effectively mitigates external shock forces and 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 mechanical, electrical, and hydraulic integrated structure. The working oil circuit circulates within a pressure-free enclosed 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 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 thoroughly investigated for the cause of failure before meticulous repair can be conducted, which affects the normal operation of the entire process.

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