Device for detecting body height value of shell product

The invention discloses a device for detecting the body height value of a shell product, which comprises a base (14) and a detection rod (1), the detection rod (1) vertically and upwards penetrates through a guide seat (2), a supporting disc (3), a turntable (4) and a positioning die (5) in a clearance fit manner, and a guide clamping claw (6) is arranged at the upper part of a bracket (13) and above the center line of the positioning die (5) corresponding to the position of the detection rod (1); a measuring cylinder (7) is arranged above the center of the guide clamping claw (6), the measuring cylinder (7) is clamped, fixed and positioned by a front cavity die holder (8) and a rear cavity die holder (9), a material returning base plate (11) is arranged above the front cavity die holder (8) and the rear cavity die holder (9), a round hole is formed in the front half part of the material returning base plate (11), a material returning rod (10) is arranged on a material returning air cylinder (12), and the mat