Elevator rail grab safety apparatus
专利汇可以提供Elevator rail grab safety apparatus专利检索，专利查询，专利分析的服务。并且Safety apparatus for elevators designed to exert a braking force on the guiding rail in an elevator shaft to bring an elevator car to a controlled stop when the apparatus is actuated by an overspeed sensing mechanism. The mechanism comprises two brake units on either side of the car including dual wedge shaped brake shoes, guided on wedge blocks by a ball bearing to move in a direction parallel to the rail and in a direction toward the rail, under the influence of actuator rods. The friction generated by initial contact with the rail produces an additional force, wedging the brake shoes through the bearings against the wedge block and producing an increasing force. The total force is limited, to produce a controlled deceleration of the car. A compression spring located between pivoted elongated arms controls the maximum pressure that is applied by the brake shoes. The elongated arms are pivoted on a pivot structure that permits sufficient freedom of movement to allow the brake shoes to align themselves with the rail.，下面是Elevator rail grab safety apparatus专利的具体信息内容。
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