The invention provides a C-shaped lifting appliance with a locking function. The C-shaped lifting appliance is characterized by comprising an upper frame, a lower frame, suspension arms and a lockingdevice; and the upper frame is connected to the suspension arms through bolts, the upper frame is connected to a trolley unit through a hanging shaft, and the middle of the upper frame is ensured to be insulated through a
polytetrafluoroethylene spacer bush. The upper frame is provided with an electrifying device, and
electricity is conducted through conductive
copper plates on the outer side of aelectrophoresis
station. The suspension arms are formed by
welding tubes and plates, the suspension arms are formed by hot bending once by adopting steel tubes, are connected to the upper frame and the lower frame through bolts up and down, and the
welding error is reduced while the
welding amount is reduced. Special tool clamps are used for manufacturing the suspension arms, and the
machining error of the suspension arms is within 2 mm. The lower frame is connected to the suspension arms through bolts, and the middle of the lower frame is ensured to be wear-resistant and
corrosion-resistantthrough a
polytetrafluoroethylene spacer bush. The locking device is arranged below the lifting appliance, and the locking device is used for automatically clamping parts which are hoisted and moved by the lifting appliance, so that the purpose of automatic production is achieved, and the purpose of improving the production efficiency is achieved.