Single Girder Underslung Crane

Single girder underslung crane introduction:

Single girder underslung crane is designed with simplicity and rigidity in mind, making it a reliable choice for your lifting needs.  Underslung crane compact size and low working class make it a versatile option for a variety of applications. You can choose between normal speed or frequency control for stable traveling, and the optional cantilever feature makes it even more versatile. Our single girder underslung crane have a lifting capacity of 0.5t-10t, a span of 3m-25.5m, and a lifting height of 1m-30m, with working classes of A3 or A4. We can also customize our cranes to meet your specific requirements.

Single girder underslung crane structure composition and features:

1. Metal Structure: The metal structure consists of the main girder and end truck, which are made of high-quality materials to ensure strength and durability. The main girder comes in two types, depending on the lifting capacity and span required. The small lifting capacity and span type is composed of I-beam and U-steel without a beam structure, while the large lifting capacity and span type is constructed with a box beam along with molded and welded U-beams and I-beams. The end truck is welded using U-steel, and the main girder and end truck are connected by a pin shaft to allow for a slight swing within a small range. This design ensures smooth running of the wheels on the truck.
2. Electric Hoist: The electric hoist is responsible for lifting objects and traveling along the main girder. It can be powered by a flat cable or special cable, and its specifications can be customized based on the specific lifting requirements.
3. Traveling Mechanism: Single girder underslung crane's traveling mechanism features a separate-driving system, where driving and braking are accomplished by a tapered brake motor. The detailed structure is similar to that of a common wire rope electric hoist. Additionally, a trinity-drive system is available as an option to meet specific requirements.
4. Electrical Parts: Single girder underslung crane's electrical parts allow for separate control of lifting and traveling operations, enabling separate or simultaneous movement. The electrical appliance enables speed adjustment without contact or spark modules, and safety features such as position limiters and traveling position switches are included. The crane can be controlled via ground wire control or ground remote control, and power leading can be achieved through current collectors or flexible cables.

Safe and proper usage of single girder underslung crane:

• Crane Test: Before using the crane, it is important to conduct a crane test without loading to inspect all the traveling mechanisms and safety devices, ensuring that they are functioning properly and accurately. This is crucial for ensuring the safety and reliability of the crane.
• Adjusting Traveling and Lifting Limiter: It is important to adjust the traveling and lifting limiters to ensure that the crane does not exceed its capacity and operates safely.
• Overloading: Overloading is strictly prohibited as it can damage the crane and pose a serious safety risk.
• Inclined Girder Direction: The crane should not be used to lift objects in an inclined girder direction as this can cause instability and lead to accidents.
• Forbidden Environments: The crane should not be used in environments with fire, bombing, or corrosive atmosphere. It should also not be used to lift molten metal or toxic, inflammable, and explosive objects.
• Proper Maintenance: Regular maintenance is important for ensuring the longevity and proper functioning of the crane. It is recommended to follow the manufacturer's instructions for maintenance and inspection of the crane.

Single girder underslung crane maintenance:

• Regular Inspection: Users should perform frequent inspections of the crane to identify any signs of wear, damage, or malfunction. This includes checking the structural components, electrical systems, and safety devices. Any issues should be addressed promptly to prevent further damage or accidents.
• Greasing the Reducer: Before using the crane, it is important to inject grease into the reducer of the trolley. A grease with a large viscosity (30-50) should be used. The amount of grease should not exceed the lowest axis of the reducer to prevent over-greasing. It is recommended to change the grease after one month of initial use and then every six months thereafter.
• Lubrication of Moving Parts: The moving parts of the crane, such as wheels, gears, and bearings, should be properly lubricated to reduce friction and ensure smooth operation. Follow the manufacturer's recommendations for lubrication intervals and use the appropriate lubricants.
• Electrical System Maintenance: Inspect the electrical components regularly to ensure proper functioning. Check for loose connections, damaged wires, or any signs of electrical issues. Clean and maintain the electrical system as per the manufacturer's guidelines.
• Safety Device Testing: Regularly test and verify the functionality of safety devices such as limit switches, emergency stop buttons, and overload protection systems. Ensure that they are in proper working condition and promptly replace any faulty components.
• Professional Maintenance: It is advisable to have periodic professional maintenance performed by qualified technicians. They can conduct more in-depth inspections, perform necessary adjustments, and address any issues that may require specialized expertise.

Proper maintenance is essential for ensuring the safe and reliable operation of the Single Girder Underslung Crane. By following these maintenance guidelines and conducting regular inspections, users can ensure that their Single Girder Underslung Crane remains safe, reliable, and in optimal working condition.