Reasons and Preventive Measures for the Overhead Crane Hook to Reach the Top

The bridge crane hook overhead refers to the situation where the hook suddenly touches the bridge body or other obstacles during operation. This situation may cause damage to the crane and hook, or even cause a serious accident. Here are some possible causes and preventive measures for overhead hooks:

Reason:

1. Operational error: The operator made a mistake when controlling the crane, causing the hook to exceed the safety limit.

2. Overload: The hoisted goods exceed the rated load capacity of the crane, causing the hook to reach the top.

3. Unstable center of gravity: The center of gravity of the hoisted goods is unstable or shifted, causing the hook to surge uncontrollably during operation.

4. Crane failure: The crane's mechanical or electrical system fails, causing the hook to lose control and reach the top.

Precaution:

1. Training and qualifications: Ensure that only specially trained and qualified personnel can operate the crane. Operators should understand the working principles, operating techniques and safety requirements of the crane, and have correct operating skills.

2. Load control: Strictly adhere to the rated load capacity of the crane and ensure that the weight of the lifted cargo does not exceed safety limits. Before hoisting, the weight of the cargo should be accurately estimated and corresponding measures should be taken to ensure a stable center of gravity.

3. Safety devices: Ensure that the safety devices on the crane are intact and effective. This includes limit switches, heavy-load protection devices and height limiting devices, which can help monitor and control the operating range of the crane to prevent the hook from reaching the top.

4. Regular inspection and maintenance: Carry out regular inspection and maintenance on the crane to keep the equipment in good working condition. Check key components such as hooks, wire ropes, electrical systems, and control systems for wear, looseness, and malfunctions, and repair or replace them in a timely manner.

5. Warning signs and signs: Set up obvious warning signs and signs on the crane and the working area to remind operators to pay attention to the hook height limit and to warn other personnel to stay away from the working area.

In summary, through correct operation, reasonable load control, use of safety devices, regular inspection and maintenance, and clear warning signs, overhead crane hook overhead accidents can be effectively prevented. In addition, operators should always remain vigilant and abide by operating procedures to ensure the safety and stability of lifting operations.