Improved two-way governor of elevator

An improved elevator two-way speed limiting device used for the speed limitation of the elevator moving up and down to ensure the operational safety of the elevator comprises a sheave assembly, a ratchet, a pulling rod, a switch, a machine bracket or the like, wherein, the sheave is connectedly provided with a flail block 1 and a racket claw, a flail block 2 is connected on the symmetrical position, the head portion of the flail block 1 is connected with the rear portion of the flail block 2 through a connecting rod, the flail block 1 fixes a square head screw, a long screw of an adjusting screw is articulated on the rear portion of the flail block 1, a strip rod is fixed on the sheave to support the ratchet claw under the action of the torsion spring, the ratchet wheel and the sheave are equipped with the same shaft, the pulling rod is provided with a left and a right accessories arranged symmetrically and respectively on the left and right box shaped boards, the lower end of the left and right pulling rod is connected with the upper portion of the ratchet wheel through a shaft pin, the box shaped board is arranged on the machine bracket, a braking shoe is respectively connected on each box shaped board. The utility model utilizes a ratchet wheel claw and a switch with the capability of moving in two directions, thereby yielding simple and compact structure, convenient installment and adjustment with safe and reliable operation.