Beijing North Zhongyi Heavy Machinery Co., Ltd. : Safety of crane speed limit (1)
Description：1. Brake lockingThe clearance seal is used between the valve core and the valve body of the reversin....
1. Brake locking
The clearance seal is used between the valve core and the valve body of the reversing valve of the truck crane. Under the dual action of its own gravity and lifting load gravity, the high pressure oil often leaks slowly through the small gap between the reversing valve core and the valve body when braking, and the hydraulic cylinder or hydraulic motor of the various institutions can not be effectively locked. Therefore, it is easy to drop the lifting weight, shrink the lifting arm, increase the range, the leg sinking accident, the light makes the truck crane can not work normally, the heavy will lead to the vehicle overturn, casualties and other malignant accidents. There are at least the following 4 safety measures to eliminate hidden dangers.
This article is organized by Beijing North Zhongyi Heavy Machinery Co., Ltd
