The lifting and hydraulic systems of electric forklifts have been fully electrified and integrated. This is fundamentally different from the way internal combustion forklifts use the engine crankshaft to drive the hydraulic pump, which also constitutes its unique design characteristics and reliability characteristics.The power source of the hydraulic system of the electric forklift is an independent hydraulic pump motor.When the operator performs the lifting, lowering or tilting operation of the gantry, the control system instructs the hydraulic pump motor to start or accelerate the operation, drives the hydraulic pump to work, converts electrical energy into the pressure energy of the hydraulic oil, and then pushes the oil cylinder to complete the corresponding action.This ”on-demand energy supply" mode means that the hydraulic system does not operate continuously, and only consumes electrical energy when action is required, so the energy efficiency is very high.The pressure and flow of the system can be precisely controlled by the adjustment of the motor speed by the electronic control system, so as to achieve smooth and precise adjustment of the lifting speed and tilt speed, and the operation feels better.

The integrated design of electrification brings many reliability advantages.First of all, the system is simplified, eliminating the need for complex mechanical connections (such as clutches and drive shafts) between the internal combustion engine and the hydraulic pump, and reducing potential mechanical failure points.The hydraulic pump motor and the pump are usually directly connected or compact in design, with simple structure and stable operation.Secondly, the control is accurate and the electrical signal response speed is fast, which makes the start, stop and speed conversion of hydraulic action very rapid and controllable, reducing the hydraulic impact, which is of great benefit to protect the door frame, oil cylinder, pipeline and other hydraulic components and extend their service life.In addition, since the motor can be stepless speed regulation according to load requirements, the system rarely runs at peak full load for a long time, the working state is relatively stable, and the heat load is low.

However, the reliability of this system is also highly dependent on the quality and daily maintenance of key components.The hydraulic pump motor and its drive controller are the core, and they need to have good heat dissipation performance and overload protection capabilities.The cleanliness of the hydraulic oil is essential. It must be replaced regularly and the fuel tank must be well sealed to prevent dust and moisture from entering, because the electronic control system is more sensitive to hydraulic oil pollution.The waterproof and dustproof performance of electrical connectors cannot be ignored, especially in humid or dusty environments.Daily inspections should pay attention to whether the hydraulic system has abnormal noise, whether the lifting is stable and powerful, and whether there is a downward phenomenon.By insisting on the use of high-quality hydraulic oil, keeping the system clean, and regularly checking the electrical connections, the lifting and hydraulic systems of electric forklifts can demonstrate a high degree of stability and long-lasting reliability, supporting efficient material handling operations.