Common fault phenomena and elimination methods of electric carrier

Common fault phenomena and elimination methods of electric carrier

As a new type of electric logistics handling equipment, its electric engine is not comparable to fuel forklifts, and as an all-electric truck, it also combines the country's resource-saving development projects and environmental protection, and has occupied a place in the vast forklift market. If you want to replace internal combustion forklifts, it will take some time, but as the popularity of the truck, As well as with the increasing number of enterprises using electric trucks in the market, the failure of electric trucks in use is also increasingly worried about, and how to effectively avoid or eliminate the hidden trouble has become a problem for business owners to worry about. According to such problems, in the communication and discussion with the company's engineering and technical personnel, we specially collected and summarized some problems that are prone to occur in the application of electric trucks and how to solve and eliminate such problems.

Fault symptoms and troubleshooting methods:

First,Tremors occur during ascension.

1.There is air in the lifting cylinder, which can be solved by multiple loads and lifting methods. 2. Hydraulic system leakage, repair and replace oil seals and hydraulic cylinders.

Second,Automatic descent under load.

1. If there is oil leakage in the oil pipe or oil line joint, the seal can be replaced. 2. The electromagnetic, manual directional valve, check valve has dirt stuck or the sealing ring is worn, resulting in internal leakage. Treatment method: Clean the valve group and replace the seals

Third, the lifting speed is too slow or can not be lifted .

1. The oil tank is short of oil, and the hydraulic oil needs to be added or replaced completely. 2. The pressure of the relief valve is insufficient, adjust it again. 3. Excessive wear of oil pump, resulting in internal leakage, need to be replaced. 4. Electromagnetic, manual reversing valve, check valve, safety valve wear or seal wear aging, need to be updated. 5. The hydraulic oil temperature is too high for a long time. The hydraulic oil deteriorates and the viscosity decreases, resulting in leakage. Replace the hydraulic oil.

Fourth, the driving wheel produces abnormal sound when walking .

1. The lubricating oil is mixed with hard debris, and the lubricating oil is updated 2. Excessive bearing wear or damage, need to be replaced.

Fifth,brake failure.

1. The control circuit is not disconnected, check the control system. 2. Brake friction disc wear, replace.

Sixth,Be completely motionless.

1. Check whether the electric door lock is open or broken. 2. Check whether the battery is powered on. The battery is insufficient.

Seventh, can not move forward or backward.

1. Battery power is insufficient, add power. 2. Walk control microswitch loose, lock screws. 3. Dc contactor failure, repair and replace. 4. Electrical control board damage, repair and replace. 5. Drive motor failure, check and repair. 6. Brake lock, adjust the drive wheel brake pad distance.

Eighth, the battery use time is short and can not be charged .

1. The battery electric solution is insufficient, and the distilled water or lead acid water is added. 2. Replace the battery with a new one. 3. If the power socket is in poor contact, trim the contact surface. 4. The battery is badly damaged, replace the unified battery.

Ninth, the charger does not work.

1. The charger does not have any display, the breaker is burned off 2. The charger power light is on, the internal breaker is broken or the resistance type is broken, and the rectifier tube is damaged.