23results about "Vertical bridges" patented technology

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 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 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 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 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 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.

The utility model relates to the technical field of floating bridges, in particular to a self-adjusting lifting type floating bridge. The bridge floor panel is used as a bridge floor, the floating block is arranged below the bridge floor panel and used for bearing the bridge floor panel, the bridge floor panel is provided with a lifting adjusting device used for adjusting the distance between the bridge floor and the water surface, the lifting adjusting device comprises a second steel wire rope, a heavy block and an electric capstan, and the electric capstan is fixedly connected with the bridge floor panel. The electric capstan is connected with the heavy block through a second steel wire rope; a liquid level detection device used for detecting the distance between the bridge floor and the water surface is arranged on the bridge floor panel, and the liquid level detection device is electrically connected with the electric capstan; in the construction process, the building structure can be constructed oppositely from the two banks at the same time, so that the construction efficiency can be improved; when the liquid level detection device detects that the horizontal plane rises, the driving electric capstan is triggered to release the second steel wire rope, so that a certain distance is kept between the bridge deck panel and the horizontal plane.