The Ed series electric hydraulic thruster acts like a "hydraulic magnifier" in the industrial field, converting tiny motor kinetic energy into powerful linear thrust. Essentially, it's a compact and efficient hydraulic power system with the following core process:
Electric input → Mechanical rotation → Hydraulic conversion → Powerful linear output
This entire process is compactly integrated into a cylindrical device, combining the power of hydraulics with the controllability of electrical systems.
Detailed explanation of working principle
▶ Step 1: Motor Drive, Power Source Activation
The three-phase asynchronous motor is powered on and starts to rotate at high speed (usually 1400-2800r/min) through the coupling, driving the input shaft of the built-in hydraulic pump. This converts electrical energy into pure mechanical energy.
▶ Step 2: Pressure Generation, Energy Conversion Acceleration
The rotating shaft drives the swashplate plunger pump to operate at high speed. The plunger reciprocates under the action of the rotating swashplate:
Suction stroke: The plunger retracts, creating a negative pressure inside, and the special hydraulic oil in the reservoir is drawn in through the suction check valve.
Compression stroke: The swashplate pushes the plunger to compress the pump chamber volume, causing the oil pressure to rise rapidly, which pushes the hydraulic oil to open the discharge check valve.
This process is cycled rapidly, achieving continuous oil pressure output, and mechanical energy is successfully converted into hydraulic energy.
▶ Step 3: Pressure Transmission, Driving Piston
The high-pressure oil is pumped to the upper chamber (piston head area) of the actuator. The oil pressure there is much greater than the resistance of the return spring in the lower chamber, and the strong fluid static pressure drives the piston rod to overcome the load resistance and extend quickly outward.
▶ Step 4: Precise Return, Reset Assurance
When the control signal is cut off, the motor stops rotating, and the oil pump pressure disappears:
The oil pressure at the top of the piston drops abruptly.
The high-strength return spring in the lower chamber drives the piston to retract quickly.
As the piston retreats, the hydraulic oil flows back to the reservoir through the valve block flow channel.
At this point, the actuator retracts, and the normally closed brake returns to the braking state under the force of the spring, safely locking the equipment.
core structure
Power motor: Quick start, ensuring initial power
Swashplate plunger pump: Core for high pressure generation, stable oil flow supply
Piston and cylinder body: Direct executor of hydraulic oil thrust, achieving push-pull motion
Specialized hydraulic oil: Ensures pressure transmission efficiency and low-temperature fluidity at -20°C to 50°C operating conditions
Reset spring group: Provides reliable return force and enhances braking effect
High and low pressure chamber seals: Ensure separation of oil circuits and effective application of pressure
