Kuangshan Crane Güvenilir Köprülü Vinç Tamir ve Bakım Hizmetleri 7/24 Uzman Desteğiyle Destekleniyor

Overhead cranes are the core equipment in manufacturing, logistics and construction industries, once a failure occurs, it may lead to hours or even days of production standstill, resulting in tens of thousands to hundreds of thousands of dollars in losses, urgent need for overhead crane repair. When choosing cranes, modern customers are not only concerned about the price of the equipment, but also the speed of response, professionalism and long-term stability of the after-sales service, Kuangshan Crane is well aware of this, and is committed to making every customer ‘buy with confidence, use with peace of mind, repair with peace of mind’.

As our promise: ‘We not only manufacture cranes, we provide round-the-clock support, upgrading and continuous operation guarantee – 24/7.’

Kuangshan Crane After-sales Service System Overview 

Kuangshan Crane has a service network covering the whole of China and more than 120 countries around the world to ensure that customers can get timely support wherever they are. Our after-sales service system includes the following core elements:

• Troubleshooting and Emergency Repair: Quickly locate the problem and respond within 3 hours to restore the equipment to operation.
• Upgrading: Enhance the performance of old cranes through modern technology (e.g. variable frequency drives, intelligent control systems).
• Original spare parts supply: Provide OEM spare parts to ensure 100% matching and prolong equipment life.
• Remote technical support for operators: Provide real-time guidance by phone or online platform to reduce operational errors.
• Service team: composed of licensed professional engineers with rich on-site experience and 7×24 hours online response.

11 Common Overhead Crane Problems and Kuangshan’s Maintenance Response Strategy

Overhead cranes are prone to the following common problems due to long-term high load operation or environmental factors, Kuangshan Crane provides targeted solutions: 

1. Wheel Failure and Maintenance Measures 

Bridge crane wheel failure is a relatively common mechanical failure, once the wheel fails, the crane will produce abnormal noise during operation of the car, especially obvious in the process of starting and stopping. During the operation of the crane running resistance increased significantly, the situation is lighter, the wheel edge and running rail friction scraping, equipment damage, heavy crane derailment accident. The main reasons for wheel failure are the following :

1. When the wheel is installed, there is no implementation of the installation standards, the wheel and the running rail horizontal direction there is an angle, resulting in the wheel running angle offset is too large, resulting in the phenomenon of chewing the rail ;
2. The crane guide rail installation accuracy is not enough, the guide rail vertical height direction installation error is large, the span error between the two guide rails exceeds the standard, resulting in the crane load generated lateral slip, resulting in the gnawing rail phenomenon ;
3. In the process of horizontal travelling of the crane truck, due to the transmission system causes the running speed of the crane wheels on both sides of the inconsistent, the occurrence of wheel gnawing phenomenon;
4. Bridge crane rigidity is not well ensured, to a certain extent, leading to the main beam deformation, crane beam arch changes, resulting in the occurrence of gnawing rail phenomenon.

Aiming at the causes of crane wheel failure, the following measures are usually used to solve the problem of wheel track gnawing :

1. Kuangshan Crane wheel installation strictly implement the wheel manufacturing and installation standards, to avoid the wheel and running track horizontal direction of the existence of the angle, when the wheel gnawing phenomenon, in the crane under no load state carefully look at the direction of the wheel, carefully check the two sides of the wheel and guide wear state, through the force analysis to determine the direction of the wheel correction correction and correction, and the wear is larger, there are large differences in the diameter of the wheel timely replacement. Replace the wheels which are worn and have big difference in diameter in time;
2. Kuangshan Crane installs guide rails will detect whether the span and height errors exceed the standard. Kuangshan Crane can help customers to measure and correct the width and height of the guide rail regularly, and when there is a phenomenon of wheels gnawing on the rail, it can reasonably adjust and reinforce the width and height of the rail to ensure that the precision of the rail installation meets the relevant standards, and effectively solve the gnawing of the rail due to the reason of the precision of the rail installation;
3. For the transmission system reasons occurring gnawing rail, will be combined with the scene carefully observe the installation of various parts of the degree of tightness, detailed analysis of the transmission system of the force situation, combined with the actual adjustment of the transmission system in accordance with the norms, based on its resistance to axial clearance adjustment of the bearings, to ensure that the operating condition is good, effectively avoid gnawing the phenomenon of the rail occurs.

2. Brake Failure and Maintenance Measures 

Brake is an important part of the bridge crane, which directly affects the equipment operating status, affecting the site staff and equipment safety. Brake failure usually includes the following aspects :

1. Brake fails to brake. The reason is that the brake pads are seriously worn out in long term operation, which causes the iron core and the support to contact and rub directly, losing braking ability. 2;
2. Insufficient braking force. Insufficient braking power is mainly caused by wear and tear of the brake pads. In addition, wear and tear of the working shaft and weakening of the spring elasticity can also lead to insufficient braking power, which needs to be analysed in the light of the specific conditions of the equipment to accurately find out the cause of the failure;
3. The brake cannot be opened. The main reasons are that the strand point cannot rotate, there is a phenomenon of jamming, the elasticity of the main spring is too large, there is air in the cylinder of the hydraulic system for some reason, etc. In addition, if there is sludge dirt on the brake wheel, it may also cause the brake to fail to open.
4. Brake wheel temperature is high, exceeding the standard high temperature failure. Brake wheel temperature exceeds the standard fault, the main reason is that the brake installation does not strictly implement the process standards, commissioning process is not standardised, resulting in serious sliding friction between the brake pads and the brake wheel, resulting in a rapid rise in the brake wheel temperature, leading to the phenomenon of smoke.

Bridge crane brake failure should be differentiated by type and targeted treatment:

1. When the brake can not be braked or the pressure is insufficient, check the wear of the brake pads in time, determine the degree of wear of the pins by observing the actual state of use, and replace the corresponding spare parts according to the norms and standards. Meanwhile, make reasonable adjustments to the tie rod nut on the brake frame to meet the working requirements of the brake.
2. When the brake is stuck, the lubrication of the brake system strand point and brake lining will be strengthened, and paraffin will be used to clean the sludge and dirt on the surface of the brake wheel, and the spring pressure will be carefully checked to effectively prevent the brake from sticking in the operation process.
3. When high temperature occurs in the brake wheel, we will make the brake wheel and the brake belt match stably according to the situation, so as to effectively avoid high temperature in the brake wheel.

3.Crane Main Girder Failure and Maintenance Measures 

Crane running for a period of time, the main girder on the arch degree can not reach the design requirements of the phenomenon of downward deflection, the reasons mainly include the following aspects :

1. The main girder welding process is not standardised during the crane production process, internal stress is generated during the welding process of the main girder of the crane, which causes the main girder structure to deform as the upper arch decreases during the operation; Kuangshan Crane adopts an automated intelligent production line, which can manufacture cranes quickly and accurately and meet the crane standards.
2. Problems in crane assembly, during the assembly process, the structure is forced to stress phenomenon, resulting in the main girder of the crane deflection; Kuangshan Crane provides crane installation services, the whole process by our technicians to participate in the guidance.
3. Environmental temperature reasons, in the metallurgical industry, the crane is in a high temperature working condition for a long time, the hardness of the material gradually decreases with the extension of time, under its own weight and load, the main beam structure deformation ;
4. Overload operation. Crane load weight for a long time over the standard, induced deformation of the main girder structure, the main girder on the arch decline.

There are two commonly used arch correction repair methods for cranes, flame correction and pre-stress correction. Although the two kinds of repair take different means, construction material differences, construction methods are different, but the principle of repair is generally similar, are used to reverse the beam and strengthen the fixed. The difference between the two is that flame correction is the use of high-temperature technology to shorten the tensile zone of the beam itself, relying on the eccentric tension to bend the beam, and then reinforced; pre-stressing correction is the use of pre-stressing reinforcement installed, relying on the method of applying eccentric tension to bend the beam, and rely on the increase in the stress of the beam reinforcement. The advantages of prestressing correction are relatively low site requirements, relatively small workload, short repair period, in addition to the prestressing correction of the upper arch on the crane girder without thermal damage, the weight of the girder after repair does not change much. However, the use of prestressing correction construction, by the temperature of the strand elongation there is a possibility of change, for the local arch degree of super poor repair effect is not ideal. In the repair process should be combined with the actual condition of the crane beam arch, reasonable choice of repair method, so as to effectively ensure the effect of beam repair.

4. Wire Rope Failure and Maintenance Measures 

wire rope failure belongs to the crane common failure, due to the weight of the goods transported all borne by the wire rope, easy to occur wire rope wear and tear, failure to deal with relatively simple, but its harm is relatively large, easy to cause production safety accidents. Overhead crane in the wire rope specifications and load weight related, if the wire rope selection does not meet the standard requirements, there may be wire rope wear, fracture phenomenon. At the same time the wire rope after a period of use, easy to material fatigue, accident hidden danger.

In the process of crane operation, it is necessary to strictly implement the operating procedures, and at the same time should do a good job of maintenance; one should avoid accidental damage to the wire rope; the second is to regularly check the use of the wire rope, the wire rope for reasonable replacement. Effectively solve the potential safety hazards, to ensure the safe and stable operation of overhead travelling crane.

5. Motor Overheating and Treatment Measures

1. The output power of the motor is lower than the actual demand during operation, which leads to overloading of the motor. In this case, detailed calculations will be made according to the actual situation on site, and the motor will be replaced with a high-power motor to meet the actual working requirements. 2) The input voltage of the motor is too small or too high.
2. The input voltage of the motor is too small or unstable, resulting in overheating of the motor. It is necessary to test and check the input line to ensure the stability of the input voltage.
3. Motor overheating caused by jamming phenomenon of crane power system, the normal operation of the motor due to external resistance caused by load increase, overheating phenomenon, the need for comprehensive and detailed inspection of the crane transmission system, accurately find out the location of the jamming and jamming causes, and timely treatment of related problems, to eliminate the problem of motor overheating.

6. Abnormal Motor Vibration and Treatment Measures

1. The motor and reducer coaxiality is not enough, the two axes are not in the same straight line, need to ensure that the coaxiality through the corresponding adjustment in line with the installation specifications.
2. Motor bearing wear phenomenon, resulting in motor operation in the state of eccentric movement, resulting in crane motor abnormal vibration, to eliminate such phenomena, need to replace the motor wear bearing, thus completely reducing the problem of eccentric movement.
3. Due to the motor running for a long time, the gap between the rotor and stator is not uniform, there is abnormal contact between the two, resulting in unbalanced friction, resulting in vibration of the motor. To solve this kind of phenomenon need to remove the crane motor, replace the motor rotor according to the requirements, reinstall the motor to work.

7. Crane Main Hook Lifting Faults and Processing Measures 

In the process of crane operation, the main hook lifting if there is lifting difficulties, the speed will be obvious abnormal phenomena.

1. Check whether the working status of relay is stable or not.
2. Check whether the main hook motor is operating normally;
3. Verify the electromagnetic brake function ;
4. Check the AC electromagnetic protection cabinet to determine whether it is in working condition, etc., so as to eliminate the main hook lifting abnormal working conditions.

8. Controller contact erosion fault and treatment measures

1. Poor contact leads to contact sparks when opening and closing, thus causing controller contact burns, should be replaced or repaired contacts in time to ensure good contact performance.
2. The controller specification model does not match with the actual work load, need to be adjusted in conjunction with the actual situation to replace the control system.
3. The power supply line line failure occurs instantaneous short circuit, due to the line short-circuit caused by the current is too large, resulting in the controller contacts burned, at this time should be tested in time to check the line, to prevent such phenomena from occurring again.

9. Fuse fuse is burned out fault and processing measures 

The crane in the opening moment, the switchgear appeared line fuse melting phenomenon. The reason of this kind of problem is that the current in the line is too large at the moment of switching on, which causes the fuse to heat up too much and be blown. It is necessary to detect and check the line through professional equipment, find out the cause of the fault and its location, and replace the fuse to restart the crane.

10. Main contactor disconnection fault causes and treatment measures 

Crane in normal operation of the main contactor disconnection, resulting in such a phenomenon has the following aspects of the reasons :

1. The main contactor of the crane is disconnected due to the large action of the trolley current relay, and the current of the relay exceeds its setting value. At this time, we will combine with the actual situation on site, re-adjust the relay current value. 
2. A position of the trolley sliding contact line debris, resulting in poor contact with the crane sliding contact line, clean up debris on the surface of the sliding contact line can effectively solve this phenomenon ;
3. In the crane operation by external factors, resulting in vibration caused by the sliding contact line off, should be promptly investigated to cause the vibration of the sliding contact line off the cause, to improve the stability of the crane in the production.

11.Motor Can Not Start Processing Measures 

If the crane trolley motor can not work, from the pure line cause, the motor line there is a short circuit or broken circuit phenomenon, need to be combined with the trolley line arrangement detection and inspection of the cause of the problem, and accurately deal with the fault where. If the crane trolley motor can not work properly, you need to carefully check the intermediate line between the contactor and the controller, accurately find out where the line problem is, and timely investigation of line problems.

Preventive measures for common crane failures 

Equipment maintenance is of great significance to the operation of the equipment, equipment failure prevention work is also very important, preventive work can prevent problems before they occur, to ensure the normal operation of the crane mechanical and electrical facilities. Therefore, we should pay attention to the crane common failure prevention work, through the implementation of scientific and reasonable equipment regular maintenance, effectively solve the daily inspection can not deal with the maintenance project. In general, in addition to normal regular maintenance projects, cranes should pay full attention to the following content :

• Terminal fastening work should be carried out in spring and autumn alternately, in principle, should be spring, autumn each overhaul is appropriate. 2.
• Regularly check the operation of the bearings of the crane parts, replace the bearings with hidden danger, review the axial clearance of the reducer, and adjust the gear mesh.
• Contactor with relatively fast contact damage should be combined with the actual situation to replace the contactor or capacity expansion and transformation;
• Strengthen the crane operating environment management, due to the crane is relatively large by environmental factors, should be combined with the actual clean-up of the crane, fully guarantee the crane operating environment.

The above measures will help to reduce crane failure and ensure the normal operation of the crane. Kuangshan Crane provides overhead crane checklist for your convenience to download and use.

Advantages of Kuangshan Crane After-sales Service 

Fast Response: Average Response Time <24 Hours 

Kuangshan Crane after-sales team consists of a group of experienced professional engineers with strong practical ability, with solid theoretical foundation and rich field experience. They are not only familiar with CMAA, ASME, ISO and other international standards, but also understand the actual needs and technical problems of customers in the process of equipment use.

Our engineers work seamlessly with our customers to provide one-stop technical support services from fault diagnosis, technical analysis, parts replacement recommendations to remote assistance and on-site commissioning to ensure that the equipment is back in operation quickly and downtime losses are minimised. Whether it is emergency repairs, regular maintenance or technical enquiry, our team is able to respond quickly, with an average response time of less than 24 hours for both national and overseas customers.

Core Team Introduction:

Liam, crane senior technical consultant

Experience: 20+ years of technical service experience in bridge and gantry cranes.

Expertise: Proficient in bridge crane structure and components, customised repair solutions, proficient in FEM, CMAA, GB standards to ensure repairs are in line with safety specifications.

Harvey, crane technical expert

Experience: 10+ years of overseas engineering service experience, familiar with the whole process from pre-sales to after-sales, serving complex projects in Southeast Asia, Africa, Middle East and other markets.

Expertise: After-sales communication with multinational customers, on-site troubleshooting and remote support for non-standard faults.

Tina, crane OEM expert

Experience: Nearly 10 years of experience in technical interface and maintenance service for OEM customers.

Expertise: after-sales parts matching, intelligent system docking, special industry maintenance strategy development, good at equipment troubleshooting and optimisation, to ensure the stable operation of equipment.

Original Spare Parts Supply: Ensure Match, Extend Service Life 

Kuangshan Crane provides 100% original OEM spare parts to ensure perfect match with the equipment, avoiding secondary failures due to poor quality parts. Our global supply chain covers 120+ countries, ensuring fast delivery of spare parts and reducing downtime.

Motor

Gearbox

Fren

Customised Maintenance: Overhead Crane Repair Companies Near Me 

In key markets such as Georgia, Kazakhstan, the five Central Asian countries and Indonesia, Kuangshan Crane provides regular maintenance services, develops personalised maintenance plans, and combines predictive maintenance techniques to extend the life of equipment and reduce the failure rate.

Customer Success Story: Pumping Station Upgrade Project 

Project Background: A sewage wastewater pumping station was originally equipped with an LD-type 5 t/10 5 m A3 single girder bridge. 5 t/10.5 m A3 single girder overhead travelling crane, due to the new equipment size increased by 300 mm, weight increased by 220 kg, the original lifting height of 3.46 m can not meet the installation requirements.

Challenge: The height of the plant was limited, and the traditional LD crane could not meet the demand for efficient lifting.

Solution: Kuangshan proposed a replacement for the LDC low headroom single girder overhead travelling crane.

• Optimised lifting height: The new model has a lifting height of 3.94 m (480 mm higher than the original model), which meets the installation requirements.
• Cost saving: no need to change the original girder system, the customer only pays for the LDC bridge and a few accessories to complete the upgrade.
• Rapid delivery and commissioning: from contract signing to on-site installation and commissioning was completed in 21 days, with the project going into operation 5 days ahead of schedule.

Result: The customer’s site downtime was reduced by 65% and the overall project cost was saved by 18%.

Client comment: ‘Kuangshan not only helped us solve our space constraints, but also completed the delivery and commissioning in the fastest possible time.’

Özet 

Kuangshan Crane’s after-sales service is centred on fast response, technical expertise and customised maintenance to ensure the safe, compliant and efficient operation of bridge cranes. Whether it’s for emergency repairs, modernisation or OEM spare parts supply, our global service network and dedicated team of professionals always provide reliable support to our customers. When you choose Kuangshan Crane, you get not just equipment, but long-term operational security and value enhancement.

kristal

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E-posta: krystalli@kscranegroup.com