44results about "Vertical bridges" patented technology

The invention provides a lifting type wave compensation trestle. The lifting type wave compensation trestle 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 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 sleeving 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 movable bridge has the advantages that the defects that a conventional vertical lifting movable bridge needs to be provided with a huge bridge tower and a complex structure are 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 provides a mechanical platform moving system which is used for solving the problem that a vehicle cannot pass through a deep pit. The mechanical platform is installed at the bottom of the deep pit, when a vehicle needs to pass through the deep pit, the mechanical platform moves from the initial position to the stop position, the supporting legs extend out, the mechanical platform is made to have stability, a section of mechanical road surface is formed on the deep pit, and the vehicle can pass through the mechanical platform; when the vehicle is not allowed to pass through the deep pit, the supporting legs are withdrawn, the mechanical platform moves to the initial position, the mechanical road surface on the deep pit disappears, and the vehicle cannot pass through. The utility model has the advantages of high reliability, high stability and high bearing performance.

The invention provides a lifting type wave compensation trestle. The lifting type wave compensation trestle 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.

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 invention relates to a lifting device for a trestle at a navigation hole. The lifting device comprises two lifting assemblies and two support assemblies. A trestle to be lifted is located between the two fixed trestles, the front side and the rear side of the trestle to be lifted are each connected with one support assembly, the support assemblies are connected with the fixed trestles on the two sides, and the lifting assembly is connected to the support assemblies and connected with the trestle to be lifted. The support assembly comprises two construction auxiliary piers, the two construction auxiliary piers are arranged below the two fixed trestles respectively, the two construction auxiliary piers are each provided with a hoisting bearing pier, the upper ends of the two hoisting bearing piers are each connected with a hoisting cross beam, and a supporting longitudinal beam is connected between the two hoisting cross beams; the lifting device for the trestle at the navigation hole is provided to overcome the existing defects, and smooth navigation of passing ships in a navigation water area and normal use of the steel trestle during engineering construction are guaranteed.

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 utility model relates to the technical field of tunnel construction, in particular to a trestle body supporting structure which comprises a trestle body, a front lifting supporting device is arranged at the front end of the trestle body, and a trestle walking device is arranged at the rear end of the trestle body. A middle lifting supporting device is arranged at the position, corresponding to the position between the front lifting supporting device and the trestle walking device, of the trestle body. The front lifting supporting device comprises front fixing supporting legs symmetrically arranged on the two sides of the trestle body. Compared with the prior art, the structure of the front lifting supporting device is additionally provided with the second front movable supporting leg and the hydraulic oil cylinder for driving the second front movable supporting leg to ascend and descend, and the horizontal component force of the second front movable supporting leg to the trestle body support is opposite to the horizontal component force of the construction vehicle to the trestle when the construction vehicle walks in a full-load mode. Therefore, due to the arrangement of the second front movable supporting leg, the radial force borne by the first front movable supporting leg can be reduced, and then the first front movable supporting leg can be prevented from being damaged due to the fact that the radial force is too large.

The present invention discloses a novel energy-saving self-balancing vertical opening bridge, which includes an opening span, a lifting tower, a load-bearing sling and a driving drum. A self-balancing side span is arranged on the outer side of the lifting tower. The load-bearing sling passes around the driving drum and is connected to one end of the self-balancing side span close to the lifting tower, so that the end of the self-balancing side span forms a vertical movable end. The other end of the self-balancing side span is hingedly connected to a fixed part to form a connection structure that can rotate up and down, so that the vertical movable end of the self-balancing side span is adjacent to the opening span. The present invention utilizes the structural deadweight of the rotatable self-balancing side span and arranges additional counterweights therein, so that the vertical gravity of the self-balancing side span on one side of the lifting tower can be roughly equal to the vertical gravity of one end of the opening span, thereby completely eliminating the arrangement of counterweights in the lifting tower, expanding the applicable span of the vertical opening bridge, and reducing the energy consumption of the opening and closing operation.

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 utility model relates to the technical field of tunnel construction, in particular to a trestle with an intelligent regulation and control function, which comprises a trestle main body and a regulation and control system, a front lifting support device is arranged at the front end part of the trestle main body, a trestle walking device is arranged at the rear end part of the trestle main body, and the front lifting support device comprises a front fixed support leg and a front movable support leg. A pressure sensor is arranged at the lower end of the front movable supporting leg and is in signal connection with the regulation and control system; the front lifting supporting device further comprises driving equipment used for driving the front movable supporting legs to ascend and descend, and the driving equipment is in signal connection with the regulation and control system. Due to the arrangement of the pressure sensor and the regulation and control system, when the front end of the trestle main body sinks, the regulation and control system can control the driving equipment to operate, so that the front movable supporting leg descends, the sinking amount of the front end of the trestle main body is compensated, and the problem that the front end of the trestle main body sinks due to the sinking of the bottom surface of the pressing position of the front movable supporting leg can be effectively solved. And the front end of the trestle main body sinks.

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 relates to the technical field of hydraulic pressure, and discloses a hydraulic system for a hydraulic lifting bridge and a control method of the hydraulic system. A first-stage pressure control module, an overflow module and a plurality of second-stage pressure control modules are arranged in the hydraulic system, the hydraulic system is communicated with a rod cavity and a rodless cavity of a hydraulic oil cylinder of the lifting bridge, the first-stage pressure control module is communicated with a hydraulic oil tank, and the second-stage pressure control module is communicated with a hydraulic oil tank; the hydraulic oil can be conveyed in a pressurized mode, and the conveyed hydraulic oil flows into a rod cavity or a rodless cavity of the lifting bridge hydraulic oil cylinder through selective reversing of the second-stage pressure control module. When the oil pressure is too high, the overflow module enables redundant hydraulic oil to flow back to the hydraulic oil tank in a liquid separation and backflow mode, and therefore a multi-layer pressure protection system is constructed, overload can be effectively prevented, and the hydraulic system is protected against damage.

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 discloses a lifting structure and a fixing device, and relates to the technical field of mining machinery, in particular to the lifting structure and the fixing device which comprise the lifting structure, a transportation platform, pile legs arranged on the outer wall of the transportation platform, trestles connected to the two ends of the transportation platform and driving parts arranged on the outer walls of the pile legs. The device has the beneficial effects that the transportation platform can be opened up and down, a winch and a pulley are matched to enable trestles at the two ends to be rapidly folded and then matched with a gear box to ascend and descend, and a lifting structure can be driven by a vehicle or a device to move; and the stability of the trestle during traffic can be greatly improved, and the service life is prolonged.