Connecting bridge running gear safety device

The utility model relates to a safety device, especially a connecting bridge running gear safety device. The utility model discloses a together articulated at lower extreme protective shroud and upper end protective shroud, round safety edge switch is equipped with in the lower extreme protective shroud outside, and the lower extreme protective shroud is two C type mechanisms, the casters dress is in the bottom surface and ground contact of lower extreme protective shroud, and both sides respectively are provided with simple door mechanism around protector, constitute the protection mechanism that floats. The utility model has the advantages of according with industry standard and requiring and the development trend, the lower extreme protective shroud makes safety device front end and ground distance keep invariable along with change of gradient through a round pin floating design that the casters articulated and front end constitutes, has improved the security. Safe marginal switch stops after making connec