Causes of poor grasping force of grab bucket of bridge crane

The reasons why the grab of bridge crane can't catch are the grab itself and the surface of the object.

1. Problems of the grab itself: There are problems in the design or manufacture of the grab itself, such as insufficient cooperation of various parts and failure of the spring, which makes it impossible to firmly grasp the object.

2. The problem between the grab and the surface of the object: the lack of friction between the grab and the surface of the object will also lead to the inability to firmly grasp the object. This is because the surface of the object is too smooth or the surface of the gripper is uneven.