Large mechanical equipment such as cranes, regardless of their type, require strict inspection. However, many times the inspection of cranes fails due to various factors, mainly including the following:

1. Incomplete equipment information

During the inspection process of the crane, there are often differences between the product logo of the crane and the provisions of the "Compilation Method for Crane Transport Machinery". According to the regulations of the crane, the working level of the crane will be divided into A1-A8 and other levels.

2. Unreasonable crane setup

In the production process of the crane, some components are missing. According to the requirements of the crane regulations, the crane must have a voltage loss protection function. Voltage loss protection is achieved through the start button switch and contactor, but it has not been started. The tonnage on the crane is often replaced by an emergency switch during start-up, and over time, the emergency switch will wear out, which will affect the crane's response capability in emergency situations and lead to accidents.

3. Neglecting the installation of grounding wires

The specifications for cranes clearly stipulate that the connection between the cab and the crane itself should not be less than two when bolted together. In cranes, workers often pay attention to whether the quality of electrical equipment meets specifications and neglect it. Therefore, when the crane is in operation, it often damages the driver's personal safety.

4. Design not standardized

In various parts of the crane, the installation of the main line contactor will be overlooked by many designers, so there will not be too much space left for installation personnel to install the main line contactor. All operating system touchpoints are prone to sticking, which can have a negative impact on the operation of the crane.

The above is the main factor of unqualified crane inspection introduced by Shandong bridge crane manufacturers, hoping to be helpful to everyone.