For the crane, the crane hook blocks is a key component, which connects the crane and the weight, so it must pay attention to its maintenance and maintenance.
In fact, if the hoisting height limiter of the crane hook or the locking device of the hook fails or is damaged, it shall not be used again.
As to work without a license, the corresponding responsibility should be investigated.
In addition, there are some differences in the structure and shape of the hanger cranes, which are mainly divided into single hook and double hook.
In addition, it can be divided into three kinds according to its manufacturing process: piece hook, forging hook and casting hook.
At present, the more commonly used hook is forged single hook. The casting hook is not allowed to be used on the crane. Low carbon steel and carbon alloy steel are widely used to solve the problem of resistance and crack generation.