SELF-LOCKING RELIABILITY TESTING MACHINE FOR SPEED DIFFERENCE FALLING PREVENTING DEVICE

摘要

The disclosed diagnostic device for detecting self-lock performance of a differential safety catch of the invention, comprising a base plate, an air pump, and a frame within which a releaser, a pair of mounting plate, one or two upper stop block(s), an impact base, and a control cabinet being disposed, which is characterized in that a hanger ring is fastened with a central hanger plate on top portion of the frame, for connecting with a differential safety catch of which bottom portion being connected to weight module; the pair of the mounting plate are oppositely disposed to separated said frame into upper and lower parts, on each mounting plate an air cylinder, within which an air lever being disposed, is individually formed, a connected portable plate, at least one of which being arranged with a position sensor, is fastened with lower portion of each air lever and actuated for a vertical motion with motivation thereof; beneath each mounting plate two gag lever ports of portable plate and one gag lever port of weight module are individually disposed, wherein the gag lever ports of portable plate is connected with the portable plate for preventing the skewing thereof during said vertical motion; two releasers being oppositely disposed are disposed respectively on the two portable plates, each of which includes a electromagnet, release claw and a leverage, and is configured to connect the electromagnet with one side thereof to form a detachable mechanical linkage and the release jaw with another side thereof that enables the release jaw vertically vibrating within a certain range while detached from the leverage, and the detachable mechanical linkage formed by the electromagnet and the leverage holding the weight module to prevent the fall thereof, respectively, wherein the release jaw horizontally extends toward the internal central axis of the frame to form a movable planet used for supporting weight module; the impact base is disposed in central portion of the base plate, of which centre axis is coincided with the weight module, as well as the differential safety catch thereof, a count sensor is further disposed on said impact base.