FIELD: machine engineering.
SUBSTANCE: device for restricting the rotation angle of valve with the hook in the left cover and supporting hole in the right cover 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 meshing with the slot edge along its length during the valve opening. 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 and the left covers, placed on the pad overlapping with the two longitudinal slot edges and to each other to move with each other and the clutch along the slot. In this case, the left cover has a hook to mesh with the bracket rigidly attached to the support with a movable hook. The right cover has a supporting hole with the hook possibility to pass through it after passing through the flared end of the pad slot. The left or the right cover has a supporting hole through which the squeezing handle is put.
EFFECT: improved device reliability.
3 cl, 16 dwg
