05-05-2010 дата публикации
Номер: CN0101700849A
Принадлежит:
The invention relates to a manual rescue device of lifts, which comprises a fixed base, a left wedge block, a right wedge block, a manual traction device, a pull-up member, a hoist rope, a driving wheel arranged on the left wedge block and a driven wheel arranged on the right wedge block, wherein the fixed base is provided with a trapezoidal hollow cavity, the left wedge block and the right wedge block are distributed inside the trapezoidal hollow cavity of the fixed base and respectively come into contact with two sides of the trapezoidal hollow cavity, the pull-up member is connected with the left and right wedge blocks and is provided with a primary drag rope, the hoist rope passes through a longitudinal gap therein, which is arranged between the driving wheel and the driven wheel; and the manual traction device comprises: a rocker, a rocker return spring, a pawl and an outer ratchet wheel, wherein the outer ratchet wheel and the driving wheel on the left wedge block are immovably connected ...
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