Abstract: A bridge detecting vehicle with two foldable arms, including: a vehicle body, slewing mechanisms, horizontal and vertical arms and telescopic arms. One end of the two horizontal arms is respectively arranged on the slewing mechanisms, and the other end of the two horizontal arms is respectively connected to the two horizontal arms. A crossed arm is provided between the two horizontal arms. The two vertical arms are respectively connected to the two horizontal arms via ball joints. A detecting device is respectively provided at rear ends of the two telescopic arms.

Abstract: A scaffolding to be fastened to a bridge or the like deck structure comprises a boom system (2) for supporting the working platforms and the support structures needed for the work and for fastening the boom system of the fastening body (1) to the upper surface of the deck structure. The boom system (2) is connected to the fastening body via a swivel quadrangle (3, 6, 11, 12).

Abstract: An under bridge access vehicle includes a tower having a ladder section and a platform section, and a vehicular chassis including a turntable mounted on the vehicular chassis for rotation thereabout and a tiltable frame mounted on the turntable in pivotal disposition relative thereto. A cross-linking member, including a pair of elongate arms pivotally joined intermediate respective lengths thereof, extends between and connects together the tiltable frame and tower. Specifically, a first of the arms includes an end mounted at a fixed location on the tiltable frame and another end slidably mounted on the ladder section, and a second of the arms including an end slidably mounted on the tiltable frame and another end slidably mounted on the ladder section, with each said arm extending between and being pivotally connected to the respective ends thereof. A first cylinder interconnects the tiltable frame and cross-linking member whereby the tower is movable between a retracted position and an extended position.