Advantages of Hefei Mobile-Imported MIMA® Electric Forklift AC Drive
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:
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.
Engine Parts
Cylinder head, body, oil pan, etc.
Crank and connecting rod mechanism: piston, connecting rod, crankshaft, connecting rod bush, crankshaft bush, piston ring, etc.
Gas distribution mechanism: camshaft, intake valve, exhaust valve, rocker arm, rocker shaft, tappet, push rod, etc.
Intake system: air filter, throttle, intake resonator, intake manifold, etc.
Exhaust system: ternary catalyst, exhaust manifold, exhaust pipe
Drivetrain accessories
Flywheel, pressure plate, clutch plate, transmission, gear shift control mechanism, transmission shaft (universal joint), wheel hub, etc.
Brake accessories
Brake master cylinder, brake cylinder, vacuum booster, brake pedal assembly, brake disc, brake drum, brake pad, brake hose, ABS pump, etc.
Steering accessories
Steering knuckle, steering gear, steering column, steering wheel, steering rod, etc.
Driving system accessories
Steel ring, tire
Hanging
Front axle, rear axle, swing arm, ball head, shock absorber, coil spring, etc.
Ignition system accessories
Spark plug, high voltage wire, ignition coil, ignition switch, ignition module, etc.
Fuel system accessories
Fuel pump, fuel pipe, fuel filter, fuel injection nozzle, oil pressure regulator, fuel tank, etc.
Cooling system accessories
Water pump, water pipe, radiator (water tank), radiator fan
Lubrication accessories
Oil pump, oil filter, oil pressure sensor
Electrical instrument accessories
Sensors, PUW vent valves, lamps, ECUs, switches, air conditioners, wiring harnesses, fuses, motors, relays, horns, actuators
Lamps Decorative lights, anti-fog lights, indoor lights, headlights, front turn signals, side turn signals, rear combination lights, license plate lights, various types of light bulbs
Switch
Combination switch, glass lifting switch, temperature control switch, etc.
Air conditioner
Compressor, condenser, drying bottle, air conditioning tube, evaporation box, blower, air conditioning fan
Sensors
Water temperature sensor, intake air pressure sensor, intake air temperature sensor, air flow meter, oil pressure sensor, oxygen sensor, knock sensor, etc.
Body accessories
Bumpers, doors, fenders, windshields, pillars, seats, center consoles, engine covers, trunk covers, sunroofs, roofs, door locks, armrests, floors, thresholds, etc.
Other accessories: airbags, seat belts, etc.
Replacement point edit
First, use sealant as much as possible, and use paint substitute if necessary to achieve the ideal sealing effect;
Second, the appearance quality of rubber seals should be carefully checked before assembly; use special tools to press-fit to avoid knocking deformation;
Third, add lubricating grease as required, and regularly clean the dredging vents and check valves, etc.;
Fourth, the assembly is carried out under extremely clean conditions, and the work surface of the parts is free of bumps, scratches, burrs and other attachments;
Fifth, strict operating procedures, seals should be installed correctly to prevent deformation in place;
Sixth, master the performance specifications and use requirements of seals, and replace failed parts in time;
Seventh, for the thin-walled parts of the side cover, sheet metal cold is used for correction; the shaft hole parts that are easy to wear can use metal spraying, welding repair, adhesive, mechanical processing and other processes to reach the original size;
Eighth, nut sliding wire breakage and loosening should be repaired or replaced with new parts, and screwed to the specified torque.
Commercial Vehicle Spareparts,Passenger Vehicle Spareparts,Engineering Machinery Spareparts,Farm Machinery Spareparts
Zhengzhou Dongfeng Mid-south Enterprise Co., Ltd. , https://www.cn-dfmtruck.com