Common Faults and Troubleshooting of Concrete Mixers
Concrete mixers are key equipment in construction, and their normal operation is crucial to the progress and quality of construction. However, during use, the mixer may have various faults that affect its normal operation. The following are some common concrete mixer faults and their troubleshooting methods:
Motor failure
Fault phenomenon:
The motor cannot start or stops immediately after starting.
The motor runs abnormally, making abnormal noise or vibration.
Troubleshooting method:
Power supply problem: First check whether the power supply is normal, whether the power cord is damaged or has poor contact, and ensure that the power is on and the voltage is stable.
Motor damage: Check whether the motor is overheated or burned. If the motor is damaged, replace or repair the motor.
Overload protection: Check whether the overload protection device is tripped or damaged, and reset or replace the protection device if necessary.
Bearing problem: If the motor makes too much noise when running, it may be that the bearing is worn or lubricated insufficiently, and lubricating oil needs to be added or the bearing needs to be replaced.
Transmission system failure
Fault phenomenon:
The transmission device is not running smoothly or stuck.
The belt or chain is loose and slipping.
Troubleshooting method:
Belt or chain inspection: Check whether the belt or chain is loose or worn, and adjust or replace it if necessary.
Gear wear: Check whether the gear is worn or damaged, and replace it if necessary.
Insufficient lubrication: Check the lubrication of the transmission system, add an appropriate amount of lubricating oil, and ensure that the transmission device runs smoothly.
Mixing drum failure
Failure phenomenon:
The mixing drum does not rotate or rotates slowly.
The mixing blade is worn or broken.
Troubleshooting method:
Motor output problem: Check whether the motor output is normal and whether the motor belt is slipping.
Mixing blade wear: Check whether the mixing blade is severely worn or broken, and replace it if necessary.
Mixing drum stuck: Check whether there is foreign matter stuck in the mixing drum, clean it up and restart it.
Control system failure
Failure phenomenon:
The control panel has no display or displays abnormally.
The operation button fails.
Troubleshooting method:
Power supply problem: Check whether the power supply of the control panel is normal and whether the power cord is damaged.
Line problem: Check whether the control line is well connected and whether there is a circuit break or short circuit.
Component damage: Check whether the buttons, switches and other components on the control panel are damaged, and replace them if necessary.
Leakage problem
Fault phenomenon:
The equipment casing is charged.
The operator feels electric shock.
Troubleshooting method:
Grounding check: Check whether the grounding wire of the equipment is well connected to ensure that the grounding resistance meets the standard.
Insulation damage: Check whether the insulation of the power cord and the motor is damaged, and perform insulation treatment or replace damaged parts if necessary.
Leakage protector: Check whether the leakage protector is working properly and replace it if necessary.
Oil leakage problem
Fault phenomenon:
The equipment leaks oil.
Troubleshooting method:
Seal inspection: Check whether the seals of the various connection parts of the mixer are aged or damaged, and replace them if necessary.
Oil circuit problem: Check whether the oil circuit system is blocked or damaged, clean the oil circuit or replace damaged parts.
Other common problems
Uneven mixing: It may be that the mixing blade is not designed properly or the speed is too low. The mixing blade angle needs to be adjusted or the motor speed needs to be increased.
Excessive noise: It may be that the equipment is not installed firmly or the bearing is worn. The equipment needs to be reinstalled or the bearing needs to be replaced.
The above are common faults and troubleshooting methods of concrete mixers.
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