The invention relates to the field of automobile part detection devices, and provides a device for testing
disc brake dragging torque and a
heat energy recovery method. The device for testing the
disc brake dragging torque comprises a base plate with a mounting seat and a support, a
brake caliper locating seat connected with the base plate, a
torque sensor connected with the support, a main shaft in pin joint with the mounting seat, a coupler, a
brake test disc and a torque loading device, the
brake test disc is connected with the other end of the main shaft, the torque loading device is connected with the other end of the
torque sensor, and the two ends of the coupler are connected with one end of the
torque sensor and one end of the main shaft respectively. The device for testing the
disc brake dragging torque can provide accurate dragging torque testing parameters for improved design. A testing method meets test specifications, high-pressure
compressed air is used for replacing hydraulic oil for testing, a
brake lining is made to clamp or release the brake test disc fast, and cleanliness is achieved.