Brake safety device of beam-pumping unit

The utility model discloses a brake safety device of a beam-pumping unit, and mainly relates to the field of oil field mechanical brake. Including a base, a speed reducer is mounted on the base; one side of the speed reducer is fixedly connected with a fluted disc; a brake plate is arranged on one side of the speed reducer; one end of the brake plate is hinged with the reducer side wall; verticalrods are hinged to the other ends of the brake plates; an anti-self-locking spring is arranged at the top of the vertical rod; a turning seat is hinged to the bottom of the vertical rod; a horizontalpull rod is hinged to the turning seat; a sleeve is in threaded connection with the other end of the horizontal pull rod, a bearing seat is installed at the other end of the sleeve, the sleeve penetrates through the bearing seat and is provided with a handle, a centralizing frame is arranged between the sleeve and the base, an auxiliary fluted disc is fixed to the side, away from the speed reducer, of the fluted disc, and