FIELD: machine engineering.
SUBSTANCE: device for restricting the rotation angle of valve with the left cover and supporting hole in the right slider comprises a hook adapted to hinge the pad with a slot having a flared end facing the hinge joint. In this case, the hook is made longitudinally movable and passing through the flared end of the slot, with the possibility of subsequent meshing with at least one edge of the slot along its length during the valve opening. On the pad, the right slider is worn movable along it with a supporting hole configured for the hook to completely or partially pass therethrough after it passes through the extended end of the longitudinal slot. Thus, on the pad, a rack ratchet mechanism is made comprising a toothed rack, with at least one tothed recess in one of the longitudinal slot edges and provided with a squeezing handled clutch disposed to squeezing from the toothed recesses and movement in the slot between the right slider and the left cover, placed on the pad overlapping with the two longitudinal slot edges and connected to the right slider to move with it and the clutch along the slot. In this case, the left cover or the right slider has a supporting hole through which the squeezing handle is put.
EFFECT: improved device reliability.
3 cl, 16 dwg
