32results about "Vertical bridges" patented technology

The utility model belongs to the technical field of bridge supports, and provides a steel support suitable for a vertical take-off and landing movable bridge and the vertical take-off and landing movable bridge, the steel support comprises a middle steel lining plate, and the top of the middle steel lining plate is connected with an upper support plate in a sliding mode; the buffering assembly comprises a high polymer material buffering mechanism and a spring buffering mechanism which are arranged at the top of the upper support plate, and an upper steel plate is arranged between the spring buffering mechanism and the high polymer material buffering mechanism; the resetting assembly comprises two groups of springback mechanisms, the two groups of springback mechanisms are respectively arranged between the two opposite side walls of the middle steel lining plate and the two opposite side parts of the upper support plate, and the springback directions of the two groups of springback mechanisms are respectively parallel to the longitudinal direction of the bridge; the bearing assembly comprises a lower support plate arranged at the bottom of the middle steel lining plate, and a deflection mechanism is arranged between the lower support plate and the middle steel lining plate. The buffering device can buffer impact force generated when the movable bridge vertically ascends and descends, and can adapt to horizontal dislocation existing when the movable bridge vertically ascends and descends.

The utility model provides a lifting type wave compensation trestle which comprises a lifting assembly, a wave compensation assembly and a trestle assembly. The lifting assembly comprises a lifting driving part, a transmission gear, a fixed rack, a transmission rack and a lifting platform; the fixed rack and the transmission rack extend in the lifting direction of the lifting assembly, the fixed rack is fixedly installed on a deck of the ship and meshed with the first side of the transmission gear, the transmission rack is meshed with the second side, opposite to the first side, of the transmission gear, and the lifting driving part is connected with the transmission gear and drives the transmission gear to move along the fixed rack. The transmission rack is driven to move between a first position and a second position; the bottom of the lifting platform is connected to the end, away from the lifting driving part, of the transmission rack. The wave compensation assembly is installed on the top surface of the lifting platform. The problems that in the prior art, the efficiency of butt joint of a trestle, an offshore floating body and a fixed platform is low, and the safety risk is large are solved.

The invention discloses a fixed winch type ship lock traffic bridge lifting system and method based on balance shaft synchronization, and relates to the technical field of multi-driving-point control systems.The method comprises the following steps that displacement sensors and load sensors are arranged at at least two driving adjusting lifting points respectively; obtaining real-time height and load data of each lifting point; calculating a deviation value of each lifting point relative to a target reference value or a system average value, wherein the deviation value comprises a height deviation and a load deviation; when any deviation value exceeds a set threshold value, the PLC calculates a speed compensation value based on a current control gain parameter and outputs the speed compensation value to the driving execution unit through the motion control module; the problem of stress concentration is effectively relieved, the structural safety is greatly improved, and the service life is greatly prolonged.

The invention discloses a large-span and large-tonnage vertical lifting movable bridge and an opening method, and relates to the technical field of bridges, the large-span and large-tonnage vertical lifting movable bridge comprises a main beam, four bridge towers, cross beams between the towers, supports, four double-drum winches and eight balancing weights; the section of each bridge tower is shaped like a Chinese character'wang ', four grooves are formed in each bridge tower, two grooves serve as running channels of a main beam lifting point, and the other two grooves serve as running channels of a balancing weight; the main beam is provided with eight symmetrical lifting points, the double-winding-drum winch comprises coaxial double winding drums, the two ends of the steel wire rope are connected with the lifting points and the balance weight respectively, and the balance weight balances more than 97% of the weight of the main beam. The double-drum winch is adopted, the pressure of a hoisting point is dispersed, and the compact layout of the bridge tower shaped like the Chinese character'wang 'is combined, so that the structural design, manufacturing and mounting difficulty is reduced, the limitation of the traditional technology is broken through, larger span and tonnage requirements are met, land and waterway traffic is considered, and the practicability and the popularization value are high.

The invention relates to a lifting system and method for a movable bridge. The system comprises two identical subsystems which are symmetrically arranged on the inlet side and the outlet side of the movable bridge respectively, and each subsystem comprises a control module, a power module and a lifting module. The control module is connected with the power module and used for controlling starting of the power module. The power module is connected with the lifting module, comprises a motor, a planetary reducer and a reducer, and is used for outputting the rotating speed and completing speed reduction adjustment, so that the lifting process of the movable bridge is synchronous; the lifting module is connected with the movable bridge and achieves synchronous lifting of the movable bridge through the rotating speed output by the power module. Compared with the prior art, the method has the advantages of being good in synchronization performance, easy to control, universal, high in safety and the like.

The application discloses a method for increasing the width of a tunnel for vehicle meeting, which comprises the following steps: placing a steel structure platform on a tunnel entrance road surface; making the bottom plate close to the lining side wall of the tunnel and adjusting the length of the lifting hydraulic rod of the lifting hydraulic cylinder to make the parking platform plate be located at a certain height; horizontally moving the parking platform plate until the parking platform plate is close to the lining side wall of the tunnel and the side wall supporting shoe assembly is supported on the lining side wall of the tunnel; and adjusting the length of the telescopic hydraulic rod of the telescopic hydraulic cylinder to adjust the position of the lower longitudinal beam which is arranged away from the lining side wall and to support the parking platform plate. The method has the advantages that the width of the tunnel for vehicle meeting is increased by utilizing the recessed space of the lining side wall, the problem of difficult vehicle meeting in the process of single-line small-section tunnel excavation is solved, the load is dispersed by supporting the side wall supporting shoe assembly on the lining side wall, the gravity center of the steel structure platform is adjusted by the telescopic hydraulic cylinder, and the stability of the steel structure platform is ensured.

The invention relates to the technical field of trestle lifting devices, in particular to a trestle lifting construction device and a construction method.The trestle lifting construction device comprises four lifting mechanisms; the lifting mechanism comprises four lifting steel pipe piles, two lifting cross beams, a winch, a pulley block fixing beam, a pulley block and a steel wire rope; the four lifting mechanisms are installed on the two sides of the trestle, the lifting steel pipe pile and the lifting cross beam serve as supports of the whole device, one end of the steel wire rope is installed on the winch, the other end of the steel wire rope is installed on the trestle, and the steel wire rope provides guidance through the pulley block. And the trestle is lifted for passing ships to navigate, so that the interference of the trestle on the navigation of the ships is avoided.

The passenger bridge system comprises a channel device, a walking device, two lifting devices, two detection sensors and a control device, each lifting device comprises a stand column and a guide pipe, one end of each stand column is connected with the corresponding guide pipe in a sleeved mode, the other end of each stand column is fixedly connected to the walking device, the channel device is connected with the guide pipes, and the detection sensors are connected with the control device. The stand column is provided with a lead screw transmission base, and the motor is used for driving the lead screw to rotate so as to drive the guide pipe to ascend and descend along the stand column. The two detection sensors are used for detecting the angular displacement of the lead screw and / or the motor shaft of the motor and sending a detection signal; the control device is used for adjusting the number of turns of rotation of the lead screw driven by the two motors according to detection signals of the two detection sensors. The passenger bridge system with the double-side synchronous detection function can accurately feed back the lifting height of the supports on the two sides of the passenger channel in real time, the running state of the motor can be conveniently adjusted in time, and the synchronous lifting precision of the supports on the two sides is guaranteed.

The invention discloses a gear vertically-driven suspension bridge gate flood and tide retaining system which is characterized in that a suspension bridge gate, bent frames, a vertical gear driver and the like cooperatively operate, the two bent frames are symmetrically arranged in opening and closing towers on two banks of a river channel, an upstream face is provided with a simply-supported bracket, and the top and the periphery of the upstream face are provided with a traction cable, a guide pulley block and a traction controller; and a vertical rack and a hoop type vertical gear driver are arranged on the side vertical surface. The suspension rotation bridge gate is of a flat plate type and is provided with a steering bearing penetrating through a gate body. During daily opening, the upstream side of the gate is placed on the simply-supported bracket, and the downstream side of the gate is horizontally embedded into a transmission cavity of the vertical gear driver through the steering bearing to form a horizontal supporting system with the simply-supported bracket. The traction cable is connected with the gate upstream lifting point and the traction controller, so that the gate can turn over around the downstream steering bearing. A built-in gear of the vertical gear driver is meshed with a rack of the bent frame and matched with traction of the traction cable to form locking, rotation and up-down displacement, the gate is driven to be opened and closed, and the requirements for large-span high-water-head long-stroke operation, shipping and communication are met.

The invention provides a guiding device of a vertical lifting movable bridge, the movable bridge and a mounting method, and belongs to the technical field of bridges, the guiding device comprises two spring damping pulley blocks, a vertical connecting rod and a horizontal connecting rod, each spring damping pulley block comprises a long shaft, a short shaft and three spring damping pulleys, one end of the short shaft is connected with the midpoint of the long shaft, and the other end of the short shaft is connected with the midpoint of the vertical connecting rod; the three spring damping pulleys are connected to the two ends of the long shaft and one end of the short shaft respectively. Each spring damping pulley comprises a pulley, a spring and a damper which are connected with one another; two ends of the vertical connecting rod are respectively connected with the two spring damping pulley blocks; one end of the horizontal connecting rod is connected with the spring damping pulley block, and the other end is connected with a main beam of the vertical lifting movable bridge. The guide device does not need a rail, clamping or damage cannot occur in the lifting process, durability is greatly improved, the guide device has the reset, buffering and vibration reduction functions, and safe, stable and mute opening of the movable bridge can be achieved.

The invention belongs to the technical field of engineering construction, and discloses a cross-sea navigation construction trestle lifting device which comprises a lower supporting pier, a lifting bridge span structure and a lifting system, and further comprises lower supporting pier steel pipe piles, upper supporting pier steel pipe piles and lower supporting pier steel pipe piles, and the lower supporting pier steel pipe piles are composed of six lower supporting pier steel pipe piles with the diameter of 630 mm in two rows; the number of the lower supporting pier steel pipe piles in each row is three, and the lower supporting pier steel pipe piles are connected with inter-pile parallel connectors and inclined struts in a welded mode through 20 # channel steel. By lifting and descending the whole construction trestle floor, the water area navigation and construction passing are met, and meanwhile the pressure and safety risks on social public transportation are reduced; construction of temporary roads is reduced; the construction period uncertainty caused by temporary shortcut land acquisition is avoided, the project construction period can be guaranteed, and the management cost is reduced; and damage to natural resources is avoided.

The invention relates to a wave type opening bridge floor construction method and device. The device comprises two movable bridge bodies, and early warning mechanisms are arranged on the inner sides of the two movable bridge bodies; according to the movable bridge, the intelligent early warning mechanism is arranged between the two movable bridge bodies, real-time detection of the alignment state of the bridge surface can be effectively achieved, and whether the bridge sections are in accurate butt joint or not is judged according to the magnetic adsorption relation between the first magnet and the second magnet; when adsorption fails, an internal reset spring is triggered to push a rubber plate to extrude a trigger switch, so that an early warning lamp is activated to give an audible and visual alarm, an operator is effectively reminded to correct displacement, and hidden dangers such as structural dislocation and clamping stagnation are avoided; the method has the technical advantages of being high in automation degree, high in response speed and accurate in error detection, is particularly suitable for complex or high-frequency lifting bridge deck construction scenes, and remarkably improves the construction safety and the butt joint efficiency.

The invention relates to the technical field of bridge engineering, and provides a checking method and system which fit the structural characteristics of a lifting type movable bridge, consider the multi-factor coupling effect and are accurate in calculation aiming at the problems that a calculation model is excessively simplified and actual working condition parameters are not combined with the structural characteristics of the lifting type movable bridge and the like in an existing checking method. The method comprises the following steps of: calculating total equivalent rotational inertia and total equivalent translational mass of all parts including a motor, a speed reducer, a working brake, a winding drum, a bridge body and a balancing weight; according to the performance parameters of the safety brake and the working brake, the winding drum side safety braking translation acceleration, the winding drum side working braking translation acceleration and the unbalanced load translation acceleration are calculated; calculating an impact load coefficient of the system; on the basis, the stroke safety of the bridge body and the strength and skid resistance of the steel wire rope are checked. According to the method, the accurate checking method adaptive to the impact effect of the lifting type movable bridge under the emergency shutdown working condition is realized, and a scientific basis is provided for design, debugging test and safe operation of the movable bridge.

A gangway for use with a container to be accessed is provided. The gangway comprises a fixed platform and a support structure connected to the fixed platform in a manner that allows the support structure to rotate with respect to the fixed platform between a raised stowed position and a lowered deployed position. An end platform is pivotally connected at the distal end of the support structure, the end platform defining an upper walking surface and a bottom surface that engages the top of the container, the height between the bottom surface and the walking surface being no greater than one inch.

The utility model discloses a trestle anti-falling device which comprises a rotating end support, a non-rotating end support and an anti-falling bearing beam. The rotating end support is fixedly mounted on a first lifting steel pipe pile, the non-rotating end support is fixedly mounted on a second lifting steel pipe pile, and the mounting elevation of the rotating end support is matched with that of the non-rotating end support; the rotating shaft end of the anti-falling bearing beam is rotatably mounted on the rotating end bracket, and the anti-falling bearing beam comprises a driving device for driving the anti-falling bearing beam to rotate so that the non-rotating shaft end of the anti-falling bearing beam and the non-rotating end bracket move in opposite directions; in the temporary navigation trestle structure using the trestle anti-falling device, the lowest position of the movable trestle section is limited through the limiting cross beam, and the trestle anti-falling device is installed on the upper side of the limiting cross beam and used for achieving anti-falling protection on the trestle. The anti-falling device for the temporary navigation trestle can be suitable for an existing lifting type temporary navigation trestle structure, effective anti-falling protection on the temporary navigation trestle can be formed, accidents and harm of the temporary navigation trestle are avoided or reduced as much as possible, and the safety of the temporary navigation trestle is effectively improved.

The invention relates to a multifunctional beam seam cover plate suitable for a vertical lifting movable bridge and a mounting method of the multifunctional beam seam cover plate. The movable bridge comprises an L-shaped cover plate, the section of the L-shaped cover plate is in an L shape, the L-shaped cover plate comprises a long edge and a short edge, a round hole matched with a pin shaft is formed in the intersection point of the two edges, and the L-shaped cover plate is assembled on a fixed bridge through the cooperation of the round hole and the pin shaft and freely rotates around the pin shaft. The long edge of the L-shaped cover plate is in lap joint with the bridge surface of the movable bridge and covers a beam seam between the fixed bridge and the movable bridge, when the movable bridge is lifted and opened, the L-shaped cover plate freely rotates around the pin shaft to be separated from the movable bridge, and when the movable bridge is descended and closed, the short edge of the L-shaped cover plate is in contact with the movable bridge and rotates along with the movable bridge until the long edge is in contact with the bridge surface of the movable bridge so as to stop moving. When the movable bridge is closed, the L-shaped cover plate plays a role in penetrating through the bridge floor, and driving safety and smoothness are guaranteed; when the movable bridge is lifted, the L-shaped cover plate is turned over to form a natural barrier, traffic on the bridge can be blocked, and vehicles are prevented from falling off.

The utility model discloses a vertical lifting movable bridge which comprises a main beam, a bridge abutment, a support, a pile foundation, a pile leg and a lifting device, the bridge abutment is supported on the foundation through the pile foundation, the support is arranged on the top face of the bridge abutment, the main beam is parked on the support, the pile leg is vertically arranged on the top of the bridge abutment, the bottom end of the pile leg is embedded in the bridge abutment, and the lifting device is arranged on the pile leg in a sliding and sleeved mode. The two ends of the main beam are fixedly connected with lifting devices which can vertically ascend and descend along the pile legs so as to drive the main beam to vertically ascend and descend. The utility model has the advantages that: 1, the defect that a conventional vertical lifting movable bridge needs to be provided with a huge bridge tower and a complicated structure is overcome, the structure is simple, the occupied area is small, and the application range is wide; 2, a lifting mode can be set according to local conditions according to opening requirements of the movable bridge, so that the manufacturing cost is saved; and 3, a lifting assembly in the lifting device adopts a working mode that a hydraulic oil cylinder is pulled, so that the problem of stability of a pressing rod when the oil cylinder is pressed can be avoided, the size and the manufacturing cost of the oil cylinder are reduced, an unfavorable working environment that the oil cylinder is pressed is changed into a favorable working environment that the oil cylinder is pulled, the service life of the oil cylinder can be prolonged, and the maintenance cost is reduced.

The utility model belongs to the technical field of trestles, and provides a lifting type steel trestle which comprises a supporting structure, a bridge floor layer and a lifting structure. A plurality of sets of double-output-shaft motors are controlled to synchronously rotate to enable a first bevel gear and a second bevel gear to be meshed to drive a threaded sleeve to rotate, the threaded sleeve rotates to be in threaded fit with a screw rod, and then the screw rod can be driven to drive a bridge floor layer to ascend and move; the threaded sleeve rotates reversely and is in threaded fit with the threaded rod to drive the threaded rod to drive the bridge floor layer to descend and move conveniently, so that the bridge floor height is adjusted conveniently and effortlessly according to the water level, the device is convenient to use in areas with large water level changes, and the practicability of the device is improved.

The invention relates to a height-adjustable equal-span truss type bridge which is characterized by comprising a first-stage bridge, a second-stage bridge, a bridge lifting system and bridge connecting units which are built on a shore base and a wharf boat and have height difference. One end of the first-level bridge and one end of the second-level bridge are rotationally connected with the first bridge connecting unit and the second bridge connecting unit correspondingly, and the other end of the first-level bridge and the other end of the second-level bridge are rotationally connected with the bridge lifting system at the same time. The first-level bridge and the second-level bridge are lifted through the bridge lifting system, and under the synergistic effect of the first bridge connecting unit and the second bridge connecting unit, the first-level bridge and the second-level bridge are located above the water surface. The device is suitable for a large-fall environment scene, and is simple in structure, low in manufacturing cost, adjustable in height, convenient to operate, economical and safe, frequent disassembly and assembly are avoided, and the construction difficulty and the work amount are reduced.

The utility model provides a lifting type wave compensation trestle which comprises a lifting assembly, a wave compensation assembly and a trestle assembly. The trestle assembly is connected to the lifting assembly through the wave compensation assembly so as to be driven by the lifting assembly to ascend and descend. The wave compensation assembly is used for driving the trestle assembly to swing around the wave compensation assembly, so that at least part of the trestle assembly is parallel to the horizontal plane. The lifting assembly comprises a tower, a lifting winch, a lifting sliding rail and a lifting platform. The tower is vertically installed on a deck of a ship, the lifting winch is arranged on the top of the tower, a lifting sliding rail is arranged on the side wall of the tower, and the side wall of the lifting platform is slidably connected to the lifting sliding rail and can be driven by the lifting winch to ascend and descend along the lifting sliding rail. The wave compensation assembly is arranged on the bearing surface of the lifting platform to lift along with the lifting platform. The problems that in the prior art, the efficiency of butt joint of a trestle, an offshore floating body and a fixed platform is low, and the safety risk is large are solved.

An intelligent railway trestle bridge for railway and iron combined transportation through a dam comprises a ground railway section connected with a conventional railway network; the flood gate groove section penetrates through the dam and is provided with a flood gate capable of being opened and closed and a train passing rail; the trestle body is erected on the water surface and comprises a plurality of piers and trestles erected on the piers, the trestles are provided with overwater railway sections, and intelligent electric hydraulic lifting mechanisms are integrated in the piers and used for automatically adjusting the height of the trestles according to the real-time water level condition; wherein railway tracks of the ground railway section, the flood control gate groove section and the overwater railway section are connected in sequence to form a continuous transportation channel. Through seamless connection of tracks of the ground railway section, the flood control gate groove section and the overwater railway section, a complete transportation channel of railway-waterway combined transportation is formed, and the physical barrier of a traditional dam to cross-water-area transportation is broken through.

The invention provides a movable bridge guiding device adapting to temperature difference deformation and an arrangement method, and belongs to the field of water transportation and bridge engineering. The device comprises a movable bridge, a bridge tower, a track embedded part and a guide device. The guide device comprises an X-direction limiting type, a Y-direction limiting type, an X-direction limiting type and a Y-direction limiting type, and each limiting type is composed of a macromolecule self-lubricating limiting sliding block and a guide frame. The core arrangement method comprises the steps that an XY two-way limiting device is arranged at a first bridge tower and serves as a temperature difference deformation starting fixing point; a Y-direction limiting device is arranged at the second bridge tower, and X-direction deformation is allowed; an X-direction limiting device is arranged at the third bridge tower, and Y-direction deformation is allowed; and the fourth bridge tower is not restrained so as to release the maximum deformation. Through differential constraint and use of high-performance self-lubricating sliding blocks at key parts, the problems of stretching and buckling deformation caused by temperature difference of a large-span movable bridge are effectively solved, the adaptive capacity, the operation stability and the long-term durability of a guiding system are remarkably improved, and the maintenance cost and the safety risk are reduced.

The present application relates to the technical field of bridge engineering, aiming at the problems of existing checking method, such as excessive simplification of calculation model, not combining actual working condition parameters and improving the structural characteristics of opening bridge, the present application provides a checking method and system which is in line with the structural characteristics of lifting opening bridge, considers the coupling action of multiple factors and is accurate in calculation. The method comprises: calculating the total equivalent rotational inertia and the total equivalent translational mass of each component including motor, speed reducer, working brake, drum, bridge body and counterweight; calculating the translational acceleration of drum side safety brake, the translational acceleration of drum side working brake and the translational acceleration of unbalanced load according to the performance parameters of safety brake and working brake; then calculating the impact load coefficient of the system; on this basis, checking the stroke safety of the bridge body, the strength of the steel wire rope and the anti-skid. The present application realizes the precise checking method which is suitable for the impact action of emergency shutdown working condition of lifting opening bridge, and provides a scientific basis for the design, debugging test and safe operation of opening bridge.

This invention discloses a fixed winch-type ship lock traffic bridge lifting system and method based on balance shaft synchronization, belonging to the field of multi-drive point control system technology. The system includes the following steps: displacement sensors and load sensors are respectively installed at at least two drive adjustment lifting points; real-time height and load data of each lifting point are obtained; the deviation of each lifting point relative to a target reference value or system average value is calculated, including height deviation and load deviation; when any deviation exceeds a set threshold, the PLC controller calculates a speed compensation amount based on the current control gain parameters and outputs the speed compensation amount to the drive execution unit through the motion control module. This invention effectively alleviates stress concentration problems and significantly improves structural safety and service life.

The utility model relates to the technical field of stage machinery, in particular to a broken bridge trawl device. The broken bridge trawl device comprises a lifting translation broken bridge and a protective structure, and the protective structure is connected with the lifting translation broken bridge through a connecting assembly. The lifting translation broken bridge can rotate around the connecting assembly to be parallel to the protection structure and drive the protection structure to move synchronously. According to the broken bridge trawl device provided by the utility model, the protection structure is arranged, so that an actor does not fall into water when the actor climbs on and leaves the lifting translation broken bridge and performs, and the performance safety of the actor is ensured.