厢货式伸缩臂高空作业车

TUNNEL INSPECTION AND INSPECTION APPARATUS

A tunnel inspection and INSPECTION apparatus, comprising a main support structure and more than two work platform assemblies provided on the main support structure, each of the work platform assemblies comprising a platform and a platform connection structure connecting the platform and the main support structure, and the platform connection structure of at least one of the work platform assemblies independently controlling, with respect to the other work platform assemblies, the corresponding platform to move between an initial position of the platform and various working positions of the platform. The device enables at least one platform to independently change working positions with respect to other platforms, improving work efficiency.

TUNNEL INSPECTION OPERATION DEVICE

Disclosed is a tunnel inspection operation device, comprising a main support structure and at least one operation platform assembly arranged on the main support structure. The at least one operation platform assembly comprises a main platform assembly. The main platform assembly comprises a main platform (10) and a main platform connecting structure for connecting the main platform (10) and the main support structure, wherein the main platform connecting structure comprises an amplitude change mechanism (9) for a pitching motion relative to the main support structure, and a levelling mechanism (12) for keeping the main platform (10) in a horizontal state. The device ensures the safety of the inspection operation, while extending the movement range of the main platform.

PITCH CHANGE APPARATUS AND TUNNEL MAINTENANCE VEHICLE

A pitch change apparatus and a tunnel maintenance vehicle, the pitch change apparatus comprising a fixed portion (1), a connection portion (2), a work platform (3) and a drive mechanism (4), the work platform (3) being connected to the fixed portion (1) via the connection portion (2), one end of the drive mechanism (4) being rotatably connected to the connection portion (2), the other end being rotatably connected to the connection portion (2) via a first intermediate component (5) and rotatably connected to the fixed portion (1) via a second intermediate component (6). The other end of the drive mechanism (4) is simultaneously rotatably connected to the connection portion (2) and the fixed portion (1). Upon extending or contracting, the drive mechanism (4) drives the connection portion (2) to rotate around the fixed portion (1), and as the connection portion (2) rotates, the rotation of the connection portion (2) is transmitted to the drive mechanism (4) via the second intermediate component ...

TRAVELLING MECHANISM FOR BRIDGE DETECTION VEHICLE, AND BRIDGE DETECTION VEHICLE

A travelling mechanism for a bridge detection vehicle, and the bridge detection vehicle. The travelling mechanism comprises a vehicle frame (11), a linearly-stretching mechanism, a second oil cylinder (9), and a travelling component. One end of the linearly-stretching mechanism is hingedly connected to the vehicle frame (11), and the other end is hingedly connected to the travelling component. One end of the second oil cylinder (9) is hingedly connected to the vehicle frame (11), and the other end of second oil cylinder (9) is hingedly connected to the outer portion of the linearly-stretching mechanism. The second oil cylinder (9) drives the linearly-stretching mechanism to be raised upwards and aslope or drives the linearly-stretching mechanism to move downwards and then to be perpendicular to the ground. The linearly-stretching mechanism drives the travelling component to be retracted upwards or drives the travelling component to move downwards and then to be in contact with the ground ...