(1) The tower crane foundation sinks and tilts: 1 The operation should be stopped immediately, and the swing mechanism should be locked to limit its rotation. 2 Set the ground anchor according to the situation and control the tilt of the tower crane. (2) Tower crane balance arm, boom arm folding arm: 1 tower crane can not do any action. 2 According to the rescue plan, according to the situation, the tower crane structure is strengthened by means of welding, or the connection method is used to connect the tower crane structure with other objects to prevent the tower crane from tipping over and accidents during the removal process. 3 Use 2-3 sets of tonnage cranes, one lock boom and one lock balance arm. One of them acts as a balancing moment when the arm is removed, preventing the tipping due to sudden changes in force. 4 Remove the deformed connecting piece in the boom or balance arm connector according to the order specified in the rescue plan, cut it with gas welding, and remove the boom with a crane; 5 remove the tower crane according to the normal tower removal procedure. The deformed structure is cut by steam welding. (3) Tower crane tipping: 1 Adopt welding and connection methods to increase the balance torque without destroying the instability and control, and control the development of danger. 2 Select the appropriate tonnage crane to remove the tower crane according to the rescue plan, and the deformed parts are cut or adjusted by gas welding. (4) Danger of anchoring system: 1 Correspond to the tower with the balance arm of the tower, the process of the arm should be stable and locked. 2 Strengthen the tower crane anchoring system. 3 If you need to replace the anchor system components, first reduce the tower crane to the specified height before replacing the components. (5) Deformation, fracture and open welding of the tower body: 1 Correspond to the deformation part of the tower balance arm, the process of the arm should be stable and locked. 2 According to the situation, the tower crane structure is deformed or broken, and the welded portion is strengthened by means of welding or the like. 3 Falling tower replaces the damaged structure. Orifice Plate Flowmeter,Throttling Device Orifice Plate Flowmeter,Magnetic Standard Throttling Device Flowmeter,Orifice Flow Transducer Jiangsu Pinpai Technology Co., Ltd. , https://www.jspingpa.com