Quick connecting and replacing mechanism of aluminum electrolysis multifunctional crown block tail end operation tool

According to the quick connecting and replacing mechanism for the aluminum electrolysis multifunctional crown block tail end operation tool, the occupied space is greatly reduced, self-adaptive positioning is achieved, and the tail end operation tool is reliably and quickly connected. The fixed frame is connected with a trolley of the multifunctional crown block, each T-shaped frame comprises a left cross arm, a right cross arm and a vertical arm, the left cross arm is provided with a positioning ball head, the right cross arm is fixed on the fixed frame, the lower end of the vertical arm is connected with a tail end operation tool, a positioning sleeve is arranged in the middle of the public lifting driving unit, a sliding sleeve slides in the positioning sleeve, and a roller is arranged at the top of the sliding sleeve. The holding device is arranged at the lower part of the public lifting driving unit; when a tail end operation tool needs to be replaced, the public lifting driving unit ascends to the corre