181results about "Travelling bridges" patented technology

A bridging device (10) for providing a bridging surface (12) between two points comprising a stack of interjoined beams (14) housed in a retracted position in a housing (11) mounted at a first point; and a drive system that drives the beams (14) to slide one over the other to telescopically extend out of the housing (11) from the retracted position to an extended position to thereby form a bridging surface (12) to a second point.

The invention provides a special launching carrier with variable position platform and a method for bridge erection using the same. The special launching carrier with variable position platform comprises a special carrier for erection bridge beam and an under-bridge machine with platform. The special carrier for erecting beam comprises a main beam, a front wheel group, a rear wheel group and a lifting device; the under-bridge machine with platform comprises a under-bridge, a rotatable rear leg, a front roller, a middle roller, a rear roller and an erecting trolley arranged on the under-bridge, and the variable position platforms are installed on both sides of tail portion of the under-bridge. When erecting bridge beam, the front wheel group moves onto the variable position platforms, which may be elevated and folded in terms of conditions of the first and last spans of different bridges, so that the bridge erection is achieved.

A travel support device for a conveyor bridge 4 having a swivel joint 12, a two-axis tilting joint 10 and a roller table 8. A portion of the tilting joint 10 is mounted to the swivel joint 12 and another portion of the tilting joint 10 is mounted to the roller table 8 such that the tilting joint 10 rotates about a defined longitudinal axis 30 and an axis 32 transverse of the longitudinal axis 30.

Vertical alignment of a movable bridge with a doorway of an aircraft is achieved by moving a sensor disposed on the movable bridge in a generally downward direction so as to sense a position of an upper surface of the aircraft. The upper surface of the aircraft has a known elevational relationship relative to the doorway of the aircraft, which is used along with the sensed position to align an aircraft engaging portion of the movable bridge with the doorway. The method accommodates different heights of a same model of aircraft resulting from differences in the aircraft loads and is easily implemented using non-contact sensors.

A mobile compression and tension bridge and shelter structure having a plurality of individual structural elements that are parallel to each other and perpendicular to the length of the bridge or shelter. The structural elements are flexibly connected to one another on a bottom surface forming an arch caused by the shape of the elements or by placing spacers between the elements with at least one tension device attached to each structural element.

An open and close apparatus for a shelter of a boarding bridge includes at least one extension arm means provided on the portal frame, each extension arm means comprising: an upper arm having one end pivotally coupled with a column of the portal frame; a lower arm having one end pivotally coupled with the other end of the upper arm and the other end pivotally coupled with an upper end of the flexible frame; a propeller controlled by a control system and including an extension rod and a main body for accommodating the extension rod, wherein one end of the extension rod is pivotally coupled with the lower arm, and one end of the main body is pivotally coupled with the upper arm; and overpressure protection means for buffering an acting force between the shelter and the aircraft shell, and the overpressure protection means is connected to the control system such that when the acting force exceeds a predetermined value, the control system controls the propeller to stop protruding and / or contracting the extension rod. The open and close apparatus in the present invention can perfectly seal with an entrance of an aircraft with a large profile curve variety and is simple in configuration, and can prevent the aircraft shell from distortion or damage when the aircraft shell squeezes or collides with the shelter.

The invention provides a self-walking type hydraulic trestle. The self-walking type hydraulic trestle comprises a trestle main body for vehicle traffic, the two ends of the trestle main body are respectively provided with a first supporting leg and a second supporting leg, one end, close to the first supporting leg, of the trestle main body is provided with the first supporting leg is provided with a walking wheel which can change the height, one end, close to the second supporting leg, of the trestle main body is provided with a movable supporting leg which can move along the length directionof the trestle main body, the movable supporting leg can expand and retract to change the length; the first supporting leg and the second supporting leg can adjust the horizontal distances to the trestle main body; the bottom part of the trestle main body is provided with inverted arch formworks and filling formworks in a hanging manner, the inverted arch formworks and the filling formworks are arranged in sequence along the tunnel ground construction direction, and the inverted arch formworks and filling formworks can change the relative distances to the trestle main body in the vertical direction. The self-walking type hydraulic trestle has the advantages that the two ends of the trestle main body are provided with structures alternately contacting with a ground, so that the position adjustment is realized, and the inverted arch formworks and the filling formworks are arranged under the trestle main body, so that the construction efficiency is improved.

A system for transporting a span on a road vehicle capable of being transformed into an amphibious vehicle, enabling crossing of a dry or water-filled gap by any road vehicle. The vehicle for transporting the span is amphibious to allow any vehicle to cross a gap filled with water by transferring and transporting the vehicle on the span supported on the amphibious vehicle operating as a floating ferry. The invention is particularly applicable in the field of civil or military engineering.

The passenger boarding bridge includes a first tunnel including a first fixed passage on which a passenger walks; and a second tunnel including a second fixed passage on which the passenger walks, the first tunnel being inserted into the second tunnel from one end side of the second tunnel, the second tunnel having another end side connected to a cab, the second fixed passage being fixed to the another end side. The second tunnel includes a movable passage including multiple plate floor members in a chain manner, the movable passage having one end fixed to the second fixed passage of the second tunnel in a pivotable manner. Accordingly, a passenger boarding bridge in which a passage level difference is eliminated at a joint part between an inner tunnel and an outer tunnel can be realized.