The MIMA® electric forklift with AC drive system has significantly improved overall performance, significantly reduced fault and component replacement rates, and greatly enhanced reliability. The forklift has higher productivity per unit time and lower operating and maintenance costs, which will bring significant benefits to customers. Benefits. Therefore, once the AC drive system is launched, it has not only gained the trust of forklift manufacturers, but also has become more and more popular among customers, and has become the trend and direction of electric forklift technology development in recent years. Its advantages are mainly reflected in the following aspects: High Strength Steel Tie Rod are steel structural members made of carbon structural steel and alloy steel, processed by machining, heat treatment and surface anti-corrosion treatment, supplemented by adjusting sleeves, lock and joints etc. The steel tie rod are important components of steel structures for construction of giant, large span buildings and ship docks. They are mainly used for prestressed parts and large span buildings in construction projects. While the strength of the product is improved, but the plasticity index is not reduced, which satisfies the principle of using the same amount of strength in the architectural design. The tie rods, tie bars, tension rods and tension bars steel grades are specified as , grade 785, grade 830, grade 930, grade 1080 etc. Post Tension Bar,Tie Bar Construction,Post Tension Rods,Post Tension Bar For Bridge SHANDONG LE REN SPECIAL STEEL CO., LTD. , https://www.sdbrightsteelbar.com
Low operating and maintenance costs The AC motor's lifetime maintenance-free AC motor eliminates the need for a reversing contactor (forward and reverse commutation), saving parts. More importantly, the AC motor has no carbon brushes and commutators. Not only is the motor lighter and smaller, the speed is increased, and the trouble of periodically detecting and replacing the carbon brushes is completely eliminated. The biggest benefit is that the forklift motor does not need maintenance for almost a lifetime, which greatly enhances the reliability and stability of the forklift. At the same time, it does not need to consider the reserved motor maintenance space in the design of the forklift, and even seal the motor. Make the forklift structure design more compact.
Regenerative braking reduces wear and regenerative braking is a non-contact braking that is much simpler than conventional braking systems. Regardless of whether the driver brakes on the brake pedal or shifts the direction of travel brake, the motor will be in the generator state, and its electromagnetic torque will become the braking torque. This means that the brake pads are worn to a minimum. The mechanical wear is greatly reduced, which reduces the maintenance cost of the forklift and makes the running cost lower.
At the same time, AC motors are more efficient in driving and braking. Regeneration energy is generated when braking or reversing. The stronger the brakes, the more energy is regenerated. The accumulators of the AC drive system are automatically activated during braking or commutation, returning energy to the battery, extending battery life and longer life. Although some DC-driven forklifts also have regenerative braking, they must be activated during strong braking, which means that part of the regenerative energy is converted into heat when braking. In almost all cases, the AC motor produces energy regeneration and continues to act until the truck is completely stationary, which is clearly more efficient than DC motors.
Increasing production efficiency The maximum speed of an AC motor is much higher than that of a DC motor, and the power is more powerful. Moreover, the AC motor can return the obtained regenerative energy to the battery, which prolongs the battery life and can be used to improve the overall performance of the forklift. As a result, the forklift starts faster during driving, and the acceleration/deceleration performance is greatly improved, shortening the time and walking distance to the highest speed. Studies have shown that in most practical applications, the distance from one start to stop of the forklift truck is rarely longer than 20m. The excellent acceleration performance of the AC motor makes it possible to achieve full speed operation of the forklift within such a short distance, and the work efficiency of the forklift is significantly improved.
Easy to program With the rapid development of semiconductor technology, the frequency conversion speed control technology has made a breakthrough development, which can control the operation of the AC motor in real time, greatly enhance the control ability of the AC motor, and obtain the same speed regulation performance as the DC motor. The AC drive adopts speed torque control, the sensitivity of the control is improved, and the operation efficiency of the forklift can be improved. The accelerator pedal is used to release the brake function (that is, the throttle is slightly loose when the forklift is walking, the regenerative braking will work), and the reversing direction is The smooth transition can be achieved when reversing, which improves the stability and reliability of the forklift. At the same time, the CAN bus is adopted, and the distributed nodes are not limited by the installation position; the modular structure, the system is easy to expand, and the functional features can be seamlessly added or modified; the bus interface standardization is realized, the system integration is simpler, and the unit design is more flexible. .
More comfortable operation The AC drive system is different in terms of improving the comfort of the forklift driver. Since the AC motor is smaller and lighter than the DC motor, this makes the design of the forklift relatively more flexible.