Angle-variable double-handle clamp

The double-handle clamp comprises a fixed bottom plate, a rotating bottom plate, a clamping block, a threaded rod and a fixing mechanism, a semicircular bevel protractor and a first clamping plate are arranged at the front end of the fixed bottom plate, a lower positioning hole is formed in the circle center position of the semicircular bevel protractor, the rotating bottom plate is provided with a second clamping plate, and a rotating shaft is arranged on the side edge of the second clamping plate. The fixing mechanism is arranged on the second clamping plate, the fixing mechanism fixes the rotating bottom plate on the semicircular angle ruler, guide plates are arranged at the rear ends of the fixed bottom plate and the rotating bottom plate, the clamping blocks are in sliding connection with the guide plates, adjusting bosses are arranged at the tail ends of the guide plates, and the threaded rods are in threaded connection with the adjusting bosses. The front end of the threaded rod is connected with the c