The DYT, DYTB series electro-hydraulic push rods are suitable for reciprocating linear (or reciprocating rotational) motion, 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-purpose power source.
Principles and Functions:
1. Principle of Operation: The electro-hydraulic push rod is powered by an electric motor, which, upon forward (or reverse) rotation, drives the hydraulic oil to be outputted as pressure oil through a bidirectional gear pump. The oil then flows through an integrated oil block to the working cylinder, 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 quickly and accurately releases the excess oil, 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 self-locking mechanism. Once the motor stops rotating, the piston rod immediately stays 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 according to 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 stroke range as per 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. Features reliable overload automatic protection, allowing the motor to continue operating normally even under overload or at the end of travel, without damaging other components. Electric actuators and electric actuators cannot compare.
2. Electro-hydraulic actuators can be started under load, whereas it is difficult for electric actuators and electric actuators.
3. The same electro-hydraulic push rod can be infinitely adjustable within its rated thrust and pull force range, thus offering a wide driving force range, which is something that electric push rods and cylinders cannot achieve.
4. Under the same thrust and speed, the electro-hydraulic push rod consumes half the electrical energy of an electric push rod and an electric actuator.
5. The electro-hydraulic push rod utilizes full hydraulic transmission, offering sensitive operation, smooth running, and effectively mitigates external shock forces. It ensures accurate stroke control, a feature 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, oil-tightness, 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 the risk of leaks in air pipes and unstable pressure, along with high noise levels; hydraulic cylinders need to be installed with a hydraulic station, whereas electro-hydraulic actuators only need power to be connected for use.
8. Easy to repair. In special cases, the electro-hydraulic push rod only requires replacement, whereas the hydraulic cylinder needs to be thoroughly investigated for the cause of the fault before meticulous repair can be carried out, which affects the normal operation of the entire work.
Comparison Chart: Electro-hydraulic Push Rod vs. Electric Push Rod, Electric Actuator, Hydraulic Cylinder, and Pneumatic Cylinder
