The invention discloses a belt-type oil pumping
unit load-off safety protection device, and relates to a belt-type oil pumping
unit load-off safety protection device, the belt-type oil pumping
unit load-off safety protection device comprises a balance box, a frame, a
brake block, a friction plate, a straightening wheel and a spring, a balance box is inserted into the frame, wedge grooves are symmetrically provided on both sides of the balance box, and two concave cavities are symmetrically provided on both sides of the balance box,
brake blocks are clamped inside the two wedge grooves, and the two
brake blocks are fixedly connected to the friction plate on one side adjacent to the frame by screws, in addition to utilizing the balance box and the frame, the invention only adds springs, brake blocks and friction plates, and does not have a complicated connecting rod transmission mechanism, thereby avoiding the problems of
torque transmission and movement flexibility due to many parts, many hinge points, and easy
rust at the hinges, so as to achieve the protection device with the characteristics of simple structure, flexible movement and higher braking efficiency.