Marine cranes play a vital role in ship operations. However, during use, the problem of the boom being unable to rise and fall often occurs, which not only affects the operating efficiency but may also bring safety hazards. As a professional marine crane seller, we have accumulated rich experience in the long-term after-sales service process and can help customers quickly locate faults and provide effective solutions. This article will analyze in detail the main reasons why the marine crane boom cannot be raised and lowered, and explore the corresponding solutions.
1. Hydraulic system failure
The hydraulic system is the core driving part of the marine crane boom lifting and lowering. Any abnormality in the hydraulic system may cause the boom to fail to move normally.
1.1 Insufficient or contaminated hydraulic oil
The quality and quantity of hydraulic oil are crucial to the operation of the crane. If the hydraulic oil is insufficient, the hydraulic pump may not provide enough pressure, resulting in the boom being unable to rise and fall. In addition, if the hydraulic oil is contaminated, impurities may clog the pipeline or damage the hydraulic components, affecting the normal operation of the system.
Solution:
Check the hydraulic oil level regularly to ensure that the hydraulic oil is sufficient.
Replace aging or contaminated hydraulic oil and use hydraulic oil that meets the standards.
Clean the hydraulic system and replace the hydraulic filter element regularly to prevent impurities from entering the system.
1.2 Damage to the hydraulic pump or motor
The hydraulic pump and motor are key components of the hydraulic system. If the hydraulic pump is worn or damaged, it will not provide sufficient hydraulic power, resulting in the inability to lift the boom.
Solution:
Observe whether the hydraulic pump has abnormal noise or heating. If there is any abnormality, it should be repaired or replaced in time.
Check the operating status of the hydraulic motor and replace it if necessary.
1.3 Leakage or blockage of the hydraulic pipeline
Leakage of the hydraulic pipeline will cause insufficient hydraulic oil pressure, and pipeline blockage will affect the flow of oil and make the system unable to work properly.
Solution:
Visually check whether the hydraulic pipeline has leakage. If oil leakage is found, the relevant parts should be repaired or replaced immediately.
Use professional tools to check whether the pipeline is blocked, clean, or replace the damaged pipeline.
2. Failure of the electronic control system
Modern marine cranes generally use electronic control systems to control the movement of the boom. If there is a problem with the electronic system, it will also cause the boom to be unable to rise or fall.
2.1 Controller or sensor failure
The electronic controller is responsible for the transmission of instructions, and the sensor is used to detect the status of the boom. If both fail, the boom may not respond to operating commands.
Solution:
Check whether the controller is working properly and whether there is a fault code.
Use diagnostic tools to check whether the sensor is damaged and replace it if necessary.
2.2 Line failure
Line short circuit, open circuit or poor contact will affect the transmission of signals, resulting in the failure of the boom to rise and fall normally.
Solution:
Use a multimeter to check the continuity of the line and troubleshoot short circuit or open circuit problems.
Make sure all electrical connection terminals are tightened to prevent loosening or corrosion.
3. Mechanical system problems
In addition to the hydraulic system and electronic system, abnormalities in the mechanical system may also cause the boom to fail to rise and fall.
3.1 Boom hinge or pulley jamming
If the moving parts of the boom lack lubrication for a long time or are blocked by external objects, it may cause jamming and affect normal lifting.
Solution:
Regularly lubricate hinges, pulleys and other parts to reduce friction resistance.
Check whether there are foreign objects stuck in the moving parts of the boom and remove obstacles in time.
3.2 Wire rope or winch failure
If the wire rope is broken or the winch is damaged, it will also affect the lifting of the boom.
Solution:
Check the wire rope for broken strands and wear, and replace it if necessary.
Maintain the winch regularly to ensure its normal operation.
4. Improper operation or environmental factors
Sometimes, the failure of the boom to rise or fall is not due to equipment failure, but improper operation or environmental factors.
4.1 Operation error
If the operator does not perform the operation in the correct order, it may cause the boom to lock or the safety protection mechanism to be activated.
Solution:
Refer to the operation manual to ensure that the correct steps are followed.
Train the operators to improve their awareness of safe operation.
4.2 Extreme weather impact
Bad weather, such as strong winds, severe cold, lightning, etc., may affect the normal operation of marine cranes.
Solution:
Avoid lifting operations in extreme weather conditions.
Use protective measures, such as covering the equipment or heating key components, to reduce environmental impact.
There are many reasons why the boom of a marine crane cannot be raised or lowered, which may involve the hydraulic system, electronic control system, mechanical components, and external factors. As a professional marine crane seller, we recommend that users regularly maintain the equipment and promptly troubleshoot potential faults to ensure that the equipment is always in good condition. If you need to wholesale marine cranes or seek professional technical support, please contact us. We will wholeheartedly provide you with quality products and services!
www.haoyotech.com
SHANGHAI HAOYO MACHINERY CO., LTD.
About Author
