Disclosed is a device for testing loading performance of a wheelchair motor. The device comprises a pedestal, with a torque-speed transducer is fixed on the pedestal, and one end of the torque-speed transducer being connected to an output shaft of a wheelchair motor to be tested while the other end is connected to an adjustable magnetic powder brake. A pneumatic quick-clamping device is provided on the pedestal at a position corresponding to the end of the torque-speed transducer connected to the output shaft of the wheelchair motor to be tested. The pneumatic quick-clamping device is used for connecting and fixing the wheelchair motor to be tested, and comprises a support platform, a motor connecting plate and a plurality of cylinders. The support platform is supported and mounted above the pedestal through cylindrical bodies. The plurality of cylinders are mounted and fixed below the pedestal, the piston rods of the cylinders being penetrated upward through both the pedestal and the support platform, and a compression head being provided at the upper end of each of the piston rods. The motor connecting plate is provided with a through hole configured to fix with the wheelchair motor to be tested. Two spaced-apart open pores are configured to fit the compression heads at the upper ends of the piston rods, openings from which the piston rods enter being provided on the side walls of the open pores. The downward movement of the piston rods compress the compression heads onto the motor connecting plate to compress and fix the motor connecting plate, thus fix the wheelchair motor to be tested.
