LNG auxiliary filling arm

The invention relates to the technical field of fluid medium shipment hose hoisting equipment, in particular to an LNG auxiliary filling arm which comprises a supporting stand column installed on the ground through a base. According to the LNG auxiliary filling arm, through cooperation of a rotating support and a manual self-locking winch on the outer side, a telescopic suspension arm is rotated by a corresponding angle, then a hose is moved to a shipment area, and the hose is lowered to a ship filling port by controlling a self-locking winch on the inner side, so that LNG ship fuel filling is time-saving and labor-saving, and the operation mode is very simple and convenient; a first hand-operated winch, a second hand-operated winch and a turnover angle adjusting handle are arranged on the outer side face of a top adjusting column, an operator does not need to operate the hose, and safety is greatly improved; and a lateral supporting rod with the top provided with an elastic damping wheel is arranged on the o