181results about "Travelling bridges" patented technology

A telescoping ramp assembly incorporates one or more sloping deck ramp sections which nest inside one another; are mounted on wheels; and have pull-up/fold-down railing sections which rise/lower and link/unlink as the ramp sections, powered manually or by way of a motor, retract and extend upon a firm surface from underneath a housing porch which itself is fixed to the entrance way of a home or building.

The invention discloses an automatic hydraulic inverted arch trestle trolley which comprises a trestle system and inverted arch mold frame systems, wherein a trestle bogie is arranged on the trestle system, and is connected with the inverted arch mold frame systems; each inverted arch mold frame system comprises an inverted arch mold longitudinal beam and an arc inverted arch template group; each arc inverted arch template group comprises a fixed inverted arch template and a movable inverted arch template; a stretching mechanism is arranged between each movable inverted arch template and the corresponding inverted arch mold longitudinal beam; lifting supporting legs are arranged at the bottom of an inverted arch template transversal beam; an inverted arch travelling mechanism capable of stretching up and down is arranged at the bottom of the tail end of each inverted arch mold longitudinal beam; transversal moving mechanisms are arranged at the two ends of the trestle system in the longitudinal direction; trestle travelling wheels are arranged at the tail ends of the trestle system. A trolley construction method comprises the following steps: moving trestle in position, excavating inverted arch, binding steel bars, demolding the inverted arches, moving molds in position, and molding and pouring. According to the invention, quick inverted arch operation conduction of a whole tunnel on the same fracture surface can be realized, assembly and disassembly of the templates are avoided, the labor intensity of workers is greatly reduced, and the construction efficiency and the construction quality are improved.

A modular pedestrian bridge (10) is disclosed. In its simplest form, the bridge (10) includes: a span module (12) having a tunnel (14) sufficient to allow pedestrians to travel through the tunnel (14), the tunnel (14) being defined by a floor (16) and a top (18), defining a height (20), sides (22) defining a width (24) and upper and lower connectors (26) and (28), a tower module (30), a stair assembly (32), the tunnel (14) having sufficient dimensions to allow the tower module (30) to be telescopically fit into the tunnel (14) and the span module (12) being adapted to fit on a chassis or flat bed truck of a vehicle. The bridge (10) is configured to simplify assembly and disassembly and is adapted to fit on a chassis, flat bed truck and the like. The span module (12) is dimensioned, such that it does not have special freight requirements, possibly triggering state and federal escort laws for extra wide or long loads.

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.

The invention relates to a marine oil field multifunctional self-elevating supporting platform pedestrian hydraulic telescopic trestle which is characterized in that a rotatable support with an inner gear ring is installed on a pedestal, a door frame is installed on the rotatable support, a guide wheel group is installed at the upper end of the door frame, a fixed bridge section is articulated on the rotatable support, guide wheel groups are installed at both ends of the bottom of the fixed bridge section, drag wire ropes are installed on the guide wheel group of the door frame and the guide wheel groups of the fixed bridge section, a winding machine for receiving and releasing the wire ropes is installed on the door frame, an extensile telescopic bridge section is movably installed in the fixed bridge section, four parallel guide rails are installed in the fixed bridge section, a roller rolling along the guide rail is correspondingly installed on the telescopic bridge section, a rack is installed at the bottom of the telescopic bridge section, and a gear engaged with the rack and a hydraulic motor are installed at the bottom of the front end of the fixed bridge section. Thus, the trestle has the functions of turning positions, elevating angles and stretching, and the rapid connection among marine production facilities can be realized, thereby greatly improving the work efficiency; and in addition, the invention also has the advantages of light weight, high mechanization degree, fewer operating staff, low labor intensity, safety and reliability.

The invention discloses a full-hydraulic crawler-type self-propelled trestle and a construction method thereof. The trestle comprises a main bridge, a front approach bridge and a rear approach bridge,and further comprises two short-side walls symmetrically arranged at the left and right and an inverted arch backfill construction template, wherein the main bridge comprises two main beams symmetrically arranged at the left and right, a plurality of distributive girders and a bridge floor structure, and the short-side walls and the inverted arch backfill construction template comprise forming templates and template supporting frames; when a tunnel is constructed, the full-hydraulic crawler-type self-propelled trestle is used for constructing the tunnel bottom lining and inverted arch backfill layer of the constructed tunnel from back to front separately by multiple tunnel sections. The full-hydraulic crawler-type self-propelled trestle and the construction method thereof have the advantages that the design is reasonable, the construction is simple and convenient, the use effect is good, self-propelled stable walking can be performed in the tunnel by adopting a crawler-type walking mechanism, the synchronous construction of the tunnel inverted arch, short-side walls and inverted arch backfill can be achieved, tunnel digging and deslagging construction can be simultaneously performed, the tunnel construction efficiency can be greatly improved, the construction quality of the tunnel inverted arch, short-side walls and inverted arch backfill can be ensured, and the construction process is safe and reliable.

The invention relates to a movable bridge type vehicle traffic system for road construction. The movable bridge type vehicle traffic system comprises a rising rampway, a rising transition rampway, a middle horizontal way, a falling transition rampway, a falling rampway, first support equipment and second support equipment, wherein the rising rampway, the rising transition way, the middle horizontal way, the falling transition way and the falling rampway are sequentially connected; the first movable support equipment is arranged at the lower edges of the rising transition way, the middle horizontal way and the falling transition way; the second movable support equipment is arranged at the lower edges of the rising rampway and the falling rampway. The movable bridge type vehicle traffic system disclosed by the invention can be repeatedly used, and the conditions of road construction and temporary traffic of cars can be considered, so that the traffic pressure is relieved, the fuel consumption of vehicles, caused by traffic jam is reduced, the energy saving and environmental protection are facilitated, and the movable bridge type vehicle traffic system belongs to the field of road construction.

The invention provides a self-moving type vehicular bridge for striding over belt conveyors, and belongs to the technical field of open-cast mining. The vehicular bridge comprises a main bridge body and auxiliary bridge bodies. A transmission shaft is fixed at one end of each auxiliary bridge body, and first chain wheels are arranged at the two ends of each transmission shaft. The two opposite ends in the length direction of the main bridge body are hinged to the auxiliary bridge bodies through the transmission shafts, so that an arc-shaped bridge deck is formed. The two opposite ends in the width direction of the main bridge body are each provided with two speed reduction motors. Second chain wheels are arranged at the output ends of the speed reduction motors. Each second chain wheel is connected with the adjacent first chain wheel through a transmission chain. First lifting hydraulic cylinders are fixed at the two opposite ends in the length direction of the main bridge body separately, and pier supports are arranged at the bottoms of the first lifting hydraulic cylinders. A main lifting hydraulic cylinder is fixed in the center of the lower surface of the main bridge body. The belt conveyors can pass through the spaces between the main lifting hydraulic cylinder and the first lifting hydraulic cylinders. The bottom of the main lifting hydraulic cylinder is rotationally connected to a tracked carrier. The vehicular bridge provided by the invention is convenient to move, and the erecting position of the vehicular bridge can be moved and changed according to setting of different transportation lines.

The invention provides a tunnel inverted-arch self-propelled trestle. Walking supports and horizontal moving oil cylinders are arranged below a trestle body, inverted-arch side formworks are arranged on the two sides of the trestle body, and thus the trestle can move front, back, left and right. When a construction vehicle walks to a construction road section through the trestle, concrete is poured, and inverted-arch work is started through the inverted-arch side formworks. A rear approach bridge is arranged behind the trestle body, a driving wheel is arranged below the rear end of the trestle body, the walking supports are arranged below the trestle body, a front approach bridge is arranged in front of the trestle body, a front trestle brace is arranged below the front approach bridge, the integral horizontal moving oil cylinders are arranged below the front end of the trestle body, foot margin oil cylinders are arranged below the integral horizontal moving oil cylinders, side formwork systems are arranged on the two sides of the trestle body, and formwork horizontal moving oil cylinders are arranged above the side formwork systems. The tunnel inverted-arch self-propelled trestle is simple in structure and low in cost and fault rate, inverted-arch construction can be carried out while vehicle traffic is ensured, the tunnel building speed can be effectively ensured, and building accidents are effectively reduced.

An auto-telescoping trestle bridge applicable to movable platforms comprises hydraulic telescoping mechanisms, flanges, a pedestrian deck, and trestle guardrails. The hydraulic telescoping mechanisms are welded on a deck of a movable platform. Each hydraulic telescoping mechanism comprises a hydraulic cylinder, a piston, a spring, a tongue pillar, a tongue pillar sheath, and a telescoping switch handle. Each flange is provided with premade holes. The flanges are symmetrically welded below two ends of the pedestrian deck. The trestle guardrails are arranged at two ends of the pedestrian deck and connected to the ends of the pedestrian deck and the tops of the flanges respectively by welding. The auto-telescoping trestle bridge has the advantages that safety risks of the movable platform trestle bridges are effectively decreased, the bridge is applicable to severe sea conditions, and platform desk area is greatly saved.

The invention discloses a tunnel invert zone division and process division streamlined construction method. The tunnel invert zone division and process division streamlined construction method includes the following steps that a first step, a telescopic mobile trestle enters a tunnel; a second step, the operation of an invert excavation initial support area is carried out in a sectional circulation mode; a third step, rebar binding of an invert lining area is conducted when the construction of the invert excavation initial support area is conducted or after the construction of the invert excavation initial support area is finished; an invert formwork is transported from an invert filling area to the invert lining area in a hanging mode, concrete of the invert lining area is poured; at thesame time, a central ditch formwork is pulled to the invert filling area, and the concrete of the invert filling area is poured; and a fourth step, after the concrete intensity of the invert filling area reaches the standard, and the telescopic mobile trestle is started to be moved into the next construction cycle. According to the tunnel invert zone division and process division streamlined construction method, each construction cycle can save 27 hours, time of the invert construction is saved, the rapid follow-up of secondary lining is promoted, it is ensured that the safe step distance management is controllable, the rapid construction of faces is pushed, and lining safety and stability are ensured.

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.

The invention discloses a mobile overpass which comprises a base frame and a walking wheel which is arranged on the base frame and driven by a power device; the base frame is provided with a support device capable of being extended downwards; the base frame is provided with an upright and a fixed bridge body obliquely arranged; the mobile overpass further comprises a sliding bridge body slidably arranged on the upright and capable of being obliquely and integrally connected with the fixed bridge body towards the same direction after slipping; the sliding bridge body is driven by a sliding drive device; the upright is provided with a slideway obliquely arranged; the sliding bridge body is provided with a sliding frame matched with the slideway; the fixed bridge body comprises a support column fixedly arranged on the base frame and a fixed bridge plate fixedly arranged on the support column; and the sliding drive device comprises a support cylinder arranged on the base frame and a traction cylinder arranged on the upright. In the invention, the overpass can be quickly formed in order to solve transitory traffic jams; and the mobile overpass has the advantages of slow cost and short work period, and ensures that the traffic jam at different intersections can be flexibly processed.

Mobile bridge system with at least one bridge section comprising two articulatedly interconnected parts, and a bridge laying vehicle provided with a lifting frame hydraulically pivotable from the horizontal transportation position into a vertical laying position, carrying a lowering frame guiding a laying cable and pivotably resting on the vehicle. One part of the bridge section, during the transportation thereof, rests a downwardly directed roadway surface on the lifting frame and is locked thereto, while the other part of the bridge section during the transportation thereof rests with an upwardly directed roadway surface on the first part. A lowering frame is fixed to the lifting frame so as to be displaceable beyond its free end and the other part of the bridge section is provided in the vicinity of its free end with outwardly pivotably mounted, length-adjustable trestle legs.

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 invention relates to an overpass, in particular to a movable bus station overpass. A body of the movable bus station overpass has an inward convex structure which comprises four layers, wherein pavements on a first layer and a second layer have parking places, while a third layer and a fourth layer have chairs. Each two layers are connected by passages. The second layer and the third layer are provided with extension passages which have through side exits at two ends. Wheels moving the body of the movable bus station overpass are arranged at the lower part of the fourth layer. The overpass is energy-saving and environmentally-friendly and can solve the problem of traffic congestion without increasing transport infrastructures.

The invention relates to an invert trestle structure for a simple multi-straddle type tunnel and a construction method. The invert trestle structure comprises a lower excavated step, wherein a lower step to be excavated is arranged on one side of the lower excavated step; a first invert trestle is arranged on the other side of the lower excavated step; a first invert trestle filler is arranged above the first invert trestle; a support truss is arranged in the middle of the lower excavated step; a face is arranged on one side of the upper end of the lower step to be excavated; double rows of super small guide tubes are connected with the face and the upper end of a secondary liner; primary guide tube supports are arranged at the lower ends of the double rows of super small guide tubes. Compared with the prior art, the invert trestle structure has the characteristics that the straddles are increased, has the advantages that along with increase of the straddles, construction operation areas are increased, and inter-procedure streamline operation can be implemented in invert trestle construction, and has the benefits and beneficial effects that nearly a half of the operation time can be saved for invert trestle construction.

The invention belongs to the field of tunnel construction facilities, and particularly discloses a tunnel construction comprehensive trolley. The tunnel construction comprehensive trolley comprises a control mechanism, and further comprises a railway laid in a tunnel and a tunnel construction comprehensive trolley body which is controlled by the control mechanism and runs on the railway. The tunnel construction comprehensive trolley body comprises a secondary lining steel bar trolley body and a geotechnical cloth waterproof plate trolley body which are arranged in sequence from the tunnel portal to the heading face. A self-walking trestle and a first walking rail which allows the self-walking trestles to walk are arranged in the secondary lining steel bar trolley body and the geotechnical cloth waterproof plate trolley body. The lower part of the front end of the self-walking trestle is provided with a first crawler belt trolley support base. The self-walking trestle and the first crawler belt trolley support base are controlled by the control mechanism. According to the scheme, the self-walking trestle is placed in the secondary lining steel bar trolley body and the geotechnical cloth waterproof plate trolley body, the secondary lining steel bar trolley body and the geotechnical cloth waterproof plate trolley body can balance weight for the self-walking trestle, the phenomenon of deformation and unsafe construction generated by deliberately prolonging the self-walking trestles for reaching a standard length are avoided.