Q-U-shaped ball joint hanging plate is a commonly used connecting fixture in transmission line fittings, mainly used for ball and socket connections between insulator strings and tower crossarms, line clamps or other fittings.

Its product usage can be summarized as:

1. The connection between the insulator string and the tower hanging point is in the suspension string and tension string, used to connect the upper end of the insulator string to the cross arm hanging point, and is a key connecting component of the hardware string.  

2. The transition connection of the ball and socket structure has a ball head at one end and a U-shaped hanging plate at the other end, which can form a flexible ball and socket connection with the bowl head hanging plate, ball head hanging ring, extension ring, etc., allowing the metal fittings string to have a certain swinging ability and adapt to changes in the stress of the circuit.  

3. Adjust the installation angle of the insulator string. The ball and socket structure can rotate freely, compensate for installation errors, maintain the optimal stress state of the insulator string, and improve the stability of the line operation.  

The standard configuration of suspension and tension strings for transmission lines is widely used in transmission lines with voltage levels such as 110kV, 220kV, and 500kV.  

5. Improve the mechanical reliability of metal fittings with simple structure, high strength, and reliable connection, which can effectively transmit wire tension and load, ensuring the safe operation of the line.