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

摘要

Self-locking reliability testing machine for speed difference falling preventing device comprises a frame (20), a bottom plate (2), and an air pump (16). There are settled a fixed plate (10), a releasing mechanism (5), an upper limit block (12), an impact pedestal (1), a control cabinet (11), a suspension ring (19), a weight block assembly (3), an air cylinder (7), a movable plate (4), a sensor (13), a movable plate limit rod (17) and a weight block limit rod (6) in the frame (20). Each releasing mechanism (5) includes an electromagnet (5010), a releasing pawl (506), and a lever mechanism. The releasing pawl (506) horizontally extends inward to form a movable platform for supporting the weight block assembly (3). A releasable mechanical linkage is formed by the electromagnet (5010) and one end of the lever mechanism. The impact pedestal (1) is arranged on the center of the bottom plate (2). The impact pedestal (1) and the weight block assembly (3) coincide with the center line of the speed difference falling preventing device(9). A counting sensor (104) is disposed on the impact pedestal (1). The testing machine is simple in structure, relatively low in manufacturing cost, fine in processing consistency, suitable for mass production and the like.