The invention discloses a longitudinal tension test load device for a super-
tonnage lifting hook and a test method.The longitudinal tension test load device comprises a foundation bearing platform, a load test cabin is arranged on the top face of the foundation bearing platform, and a plurality of lifting lugs used for lifting are fixedly installed on the top face of the load test cabin; a
servo driving motor, a precise
ball screw, a longitudinal sliding base, a main loading
hydraulic cylinder, an adjustable supporting frame, a sliding type bearing frame, a main locking connecting rod, a connecting rod supporting frame, a
gear transmission block, a fan-shaped meshing gear, a driven connecting rod mechanism, a self-adaptive clamping module, a lateral mounting
flange and a self-locking limiting plate are matched with one another; the position of the adjustable supporting frame on the hook claw can be adjusted for multiple tests, the industrial
endoscope can detect cracks on the surface of the hook in the test process, the
laser displacement sensor can monitor deformation of the claw, a worker detects flaws of the hook through the ultrasonic flaw
detector, and the test effect on the hook is achieved.