Braker for elevator upward

The utility model provides a braker for elevator upward which relates to a braker used when the elevator is overspeed during going upwardly, comprising a base frame, upper and lower wedge blocks which are arranged inside the base frame. A pair of upper wedge blocks are arranged symmetrically on two sides of a steel cable; a pair of connecting plates are arranged symmetrically in right and left on the outer sides of the two upper wedge block. The two connecting plates are respectively sleeved on a left guiding column and a right guiding column and can drive the two upper wedge blocks to move transversely and vertical along the guiding columns. A counter pulling spring rod and a stopping rod are connected between the two connecting plates. The two upper wedge blocks are provided with back linings. A pair of lower wedge blocks are arranged symmetrically in right and left on two sides of a steel cable on the lower part of the upper wedge blocks. The outer sides of the two lower wedge blocks are provided with a left baffle plate and a right baffle plate; a sliding rail of the lower wedge blocks is arranged between the left and the right baffle plates. Buffer springs are arranged between the baffle plates and the wedge blocks. The braker for elevator upward has the advantages of simple structure, safe braking, reliability, convenient installation, easy use and convenient maintenance.