Single girder gantry crane is a kind of common lifting machinery, which belongs to a kind of gantry crane, and is widely used in the fields of industrial production and logistics transportation. Due to the problem of project turnover or enterprise relocation, you may face the problem of dismantling and installing gantry crane equipment. Today, the professional of the crane manufacturer will give you a brief explanation of the content of the dismantling single beam frame crane plan.

Principles of single girder gantry crane demolition work

• Safety first: Before dismantling the single girder gantry crane, the safety of the workplace must be ensured. Demolition personnel must receive professional training, abide by safe operating procedures, and wear safety helmets and protective gloves.
• Minimize loss as much as possible: During the demolition process, the loss of equipment must be minimized. This can be achieved through correct disassembly methods and reasonable protection measures. For example, a crane can be used to lift equipment instead of moving it by hand.
• Principles of environmental protection: During the demolition process, the principles of environmental protection must be followed to minimize the impact on the environment. Waste and hazardous substances generated during demolition must be disposed of to ensure that the environment is not polluted.

The steps of single girder gantry crane demolition work

• Preparations: Before dismantling, all necessary tools and equipment must be prepared. This includes cranes, cutting machines, electric welding machines, gas welding equipment, hand hoists, jacks, etc. In addition, corresponding safety measures and warning signs need to be prepared.
• Determine the dismantling plan: work out a reasonable dismantling plan according to the condition and usage of the equipment. The disassembly sequence, cutting method, crane hoisting scheme, etc. should be included in the plan. Ensure the feasibility and safety of the program.
• Cutting equipment: According to the sequence and requirements determined by the disassembly plan, cut the equipment. You generally start with load-bearing members, such as roof trusses or leg columns. Can be cut with a grinder. But care should be taken to prevent the grinding wheel from flying out and hurting people. If the gas-cutting method is used, relevant safety regulations and operating procedures need to be followed.
• Crane hoisting: After the cutting is completed, a crane can be used for hoisting. Before hoisting, it is necessary to determine the hoisting location and method; and check whether the crane meets the safety requirements. Make sure the crane has enough lifting capacity to handle the weight of the equipment. During the hoisting process, close cooperation between the commander and the crane operator is required to ensure safety.
• Removal of other gantry crane components: After the hoisting of the crane is completed, other components can be disassembled. For example, electrical equipment, hydraulic equipment, etc. The disassembly process needs to be carried out in order to prevent damage to other components. If the equipment has more fragile parts, it is necessary to use air cushions or other protective measures to reduce losses.
• Recycling: During the demolition process, reusable components need to be recycled as much as possible. For example, metal materials, electronic components, etc. This reduces waste while also reducing costs. Components that cannot be recycled must be disposed off in accordance with the disposal regulations for hazardous substances.
• The dismantling plan of the single girder gantry crane needs to be formulated and implemented according to the actual situation to ensure safety, reduce losses and meet environmental protection requirements. At the same time, resources should be utilized as much as possible to reduce costs.

The reason for the sliding hook of the electric hoist of the single girder gantry crane

The electric hoist plays the role of lifting up and down and transporting heavy objects left and right on the gantry crane. Once a fault occurs, the equipment must be stopped. For example, the common sliding hook, what are the reasons for the electric hoist sliding hook?

• If the wire rope of the electric hoist fails, when the remote control presses the lift or lower button, if the cone brake cannot be closed normally, the motor failure or insufficient power may cause the hook to fall under load.
• Bearing damage in wire rope torque transmission will also affect torque transmission. Bearing damage may cause various parts of the transmission mechanism to be affected by the eccentric load torque, resulting in problems such as shaking and twisting of the transmission shaft, poor gear meshing, spline wear, etc., affecting torque transmission and causing the load-bearing drop of the hook.
• If the reducer fails, the electric hoist will reduce the speed and increase the torque through the gear transmission of all levels in the reducer. Any twisting or breaking of the transmission shaft, broken teeth or poor meshing of any gear will affect the transmission of torque, and will also cause the load-bearing of the hook to slide.
• The conical brake of the electric hoist is in a normally closed state. If the braking force is insufficient during the lifting or lowering of the hook, the conical brake cannot be closed normally, and the hook will also fall under load.
• There is a problem in the torque transmission from the motor to the reducer in the electric hoist. The motor and reducer of the electric hoist are respectively located on both sides of the hoist, and the torque transmission is completed by the drive shaft and coupling inside the reel. If the transmission shaft is broken, the spline is worn, the coupling is damaged and other problems occur, it will affect the transmission of torque, resulting in the load bearing of the hook falling.

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