Drilling machine angle adjusting device

The utility model provides a drilling machine angle adjusting device which comprises a crawler vehicle body, a machine frame platform and an adjusting device body arranged in the center of the machine frame platform. The adjusting device body comprises primary and secondary planet limiting teeth, a hydraulic oil cylinder, a primary and secondary rotating disc, a central positioning shaft, a back bearing device and a limiter; the child-mother planet limiting teeth comprise planet limiting tooth child teeth and planet limiting tooth mother teeth, and the planet limiting tooth child teeth are arranged in the mother teeth; the back bearing device is fixedly connected with the planetary limiting teeth, and the hydraulic oil cylinder is connected with the primary-secondary rotating disc and the back bearing device; the center positioning shaft is vertically connected to the center of the child-mother rotating disc, the planet limiting tooth child tooth and the back bearing device are arranged on the center position