20 results about "Lattice tower" patented technology

The invention belongs to the technical field of lattice tower structure health detection, and relates to a lattice tower rod piece missing intelligent detection method based on multi-view three-dimensional reconstruction. According to the method, an adaptive feature matching algorithm fusing geometric features and texture descriptors is provided, camera pose estimation is optimized by constructing a global depth consistency scoring mechanism, and high-precision sparse point cloud reconstruction is realized; designing a depth map optimization strategy based on energy minimization, and effectively overcoming the interference of complex illumination and a low-texture environment on three-dimensional reconstruction in combination with density threshold filtering and geometric structure feature analysis; an ordered / disordered point cloud adaptive noise reduction method is innovatively provided, and noise robustness processing is realized through gradient constraint and covariance matrix eigenvalue analysis; and finally, an improved neighborhood radius adaptive registration algorithm is adopted, and a rod piece missing region is accurately identified through a significance scoring mechanism. The method remarkably improves the automation level and reliability of rod piece missing detection, and can be widely applied to structural health detection of the lattice tower.

The invention discloses a fan lattice tower optimization design system and method based on an improved genetic algorithm, and the system comprises a parameter input module which is used for receiving and preprocessing tower design parameters; the population initialization module is used for randomly generating a population and adapting to the change of the overall structure layer number of the tower by adopting a variable-length coding strategy; the finite element modeling and analysis module is used for constructing a parameterized finite element model for individuals of each population based on a finite element platform and performing finite element analysis; the algorithm optimization module is used for calculating the total cost and penalty term of each individual, and then taking the total cost of the tower as an optimization target, and using an improved genetic algorithm to complete optimization iteration; and the result output module is used for outputting an optimal individual parameter and a total cost optimal value when optimization iteration reaches the maximum evolutionary algebra or meets a convergence condition. The manufacturing cost of the tower can be remarkably reduced on the premise that constraint conditions such as strength, stability and frequency are met.

The utility model discloses a five-way structure, a conversion section connecting structure comprising the five-way structure and a lattice type tower. The five-way structure comprises a first connector, a second connector, a third connector and a fourth connector. The first connector and the second connector are obliquely arranged at the top of the fourth connector, and the first connector is located above the second connector. The two third connectors are arranged on the lower portion of the fourth connector side by side, and an included angle exists between the two third connectors. Connecting seams between the connectors are integrally formed in a pouring mode, and connecting holes are formed in the connecting end faces of the connectors. The utility model has the characteristics of compact structure, convenience in disassembly and assembly, high reliability and the like, and is favorable for improving the convenience in installation and maintenance of the high-power wind generating set.

The invention relates to the field of lattice towers, in particular to an externally-wrapped reinforced corner column lattice tower suitable for a wind power supporting structure, which comprises N corner columns arranged along the height direction, lattice diagonal rod systems arranged between the adjacent corner columns, a bottom supporting structure for supporting the corner columns and a conversion section for connecting an upper wind power tower drum, each corner column comprises an outer pipe, an inner pipe, a prestressed steel strand arranged in the inner pipe and a concrete structure filled between the outer pipe and the inner pipe, and the two ends of the prestressed steel strand are anchored in the conversion section and the bottom supporting structure respectively. By adopting the technical scheme, the material consumption and the construction cost can be effectively reduced on the premise of ensuring the structural safety.

The invention discloses an optimal design method of a wind power concrete filled steel tube lattice type tower, which is applied to the wind power concrete filled steel tube lattice type tower, and the lattice type tower comprises a lattice section and a steel section arranged above the lattice section; the method comprises the steps that S1, the height of a lattice section and the height of a steel section are determined; s2, constructing a lattice segment initial model; s3, verifying whether the tower performance index of the lattice section initial model is qualified or not through a structural mechanics theory algorithm; s4, based on a finite element simulation analysis result, performing optimization design on the lattice segment initial model to obtain a lattice segment optimization model; and S5, on the basis of the lattice section optimization model and the height of the steel section, constructing a lattice type tower integrated model, calculating loads at the joints of all nodes of the lattice type tower integrated model under different working conditions through fan load calculation software, and checking whether optimization design meets design requirements or not. According to the method, the iterative optimization workload of fan load calculation software can be reduced, the calculation power demand is reduced, and the calculation period is shortened.

The application relates to a novel wind power supporting structure. A novel cast steel pipe node lattice wind power supporting structure comprises a pile foundation, a cast steel pipe node lattice tower, a tower conversion node and a steel tower drum which are sequentially connected in the height direction; the cast steel pipe node lattice tower is composed of a top layer tower section, a plurality of middle tower sections and a bottom layer tower section; the top layer tower section, the plurality of middle tower sections and the bottom layer tower section are respectively composed of lattice units with the same structure; the lattice unit comprises a plurality of support columns and column interconnecting rods; each support column is composed of a TT type node and a tower column; the column interconnecting rod comprises a diagonal rod and a horizontal rod; adjacent TT type nodes are connected through the horizontal rod; the upper end and the lower end of adjacent support columns are cross-connected through the diagonal rod. The cast steel pipe node lattice wind power supporting structure has high strength and bending stiffness, can effectively exert the mechanical properties of the material, reduce the construction difficulty on site, greatly shorten the construction period and reduce the cost.

The present application relates to the technical field of angle steel tower, and provides a multi-loop power transmission line angle steel lattice tower, which comprises a tower base, a positioning mechanism is fixedly connected to the top of the tower base, the positioning mechanism comprises a supporting positioning pile fixedly installed at the top of the tower base, a protective cover is fixedly connected to one side of the supporting positioning pile, a knob is movably connected to the outer wall of the protective cover, a worm is fixedly connected to the outer wall of the knob, and a transmission worm wheel is movably connected to the outer wall of the worm. By rotating the knob, the worm is rotated, the transmission worm wheel is rotated, the bidirectional screw rod is driven to rotate, the two movable blocks are moved along the movable grooves in opposite directions, the L-shaped supporting frame is driven to move, the two limiting blocks are inserted into the limiting grooves in the tower body respectively, and the tower base and the tower body are positioned and assembled conveniently, stably and quickly.

An apparatus for generating offshore wind employs shallow draft floats supporting a lattice tower with a wide base having a single-line anchoring providing passive yawing. The lattice structure supports a horizontal shaft at both ends of the shaft for rotating a rotor assembly. Mechanical energy from the rotor may be transferred to electrical generation equipment located at the base of the structure.

This application discloses a precise positioning and hoisting device for reusable lattice-type towers, comprising: a positioning frame with several I-shaped guide grooves on its upper surface; a connecting mechanism disposed on the positioning frame, including a movable support and a driving component for sliding the movable support within the guide grooves, the movable support being locked at a preset position by a locking component; a connecting flange fixed above the movable support, the connecting flange having the same specifications as the bottom flange of the corner column; and a support mechanism disposed on the positioning frame and having the same number of corner columns, the support mechanism including a first telescopic rod, one end of the first telescopic rod being hinged to the positioning frame and the other end being hinged to the pole body of the corner column, the first telescopic rod having a fixed telescopic length. This application can meet the stringent requirements of modern power systems for the rapid, precise, and non-destructive installation of reusable towers for temporary power supply.

The application relates to the wind power technology field and discloses a lattice tower and a wind power generation device. The lattice tower comprises a plurality of pile bodies and a plurality of web members. The plurality of pile bodies are arranged around a preset direction, one end of the plurality of pile bodies is connected to a base, and the other end of the plurality of pile bodies is arranged away from the base. The pile body comprises a plurality of sub-piles which are sequentially spliced together, the sub-pile comprises a hollow pipe body, a concrete structure which is located in the pipe body and attached to the inner wall of the pipe body, and the pile body further comprises a prestressed structure which sequentially penetrates through the plurality of sub-piles. Each web member is connected between two adjacent pile bodies. The lattice tower and the wind power generation device provided by the application can be beneficial to saving production costs and improving production efficiency.

The utility model relates to a prestressed ribbed concrete filled steel tube cage type tower structure which comprises a plurality of sections of connected steel tube cages, and each section of steel tube cage comprises prestressed concrete steel tubes, metal rings, crossed steel tubes and transverse steel tubes. The prestressed concrete steel pipes are annularly arranged and are composed of steel pipes, stiffeners bonded to the inner side walls of the steel pipes, prestressed steel strand bundles penetrating through the axial directions of the steel pipes and self-compacting high-strength concrete. The multiple layers of metal rings are welded to the outer side of the prestressed concrete steel pipe, and vertical connecting flanges are arranged at the ends of the metal rings. The plurality of prestressed concrete steel pipes are connected into a cage-shaped structure by the crossed steel pipes and the transverse steel pipes through the connecting plates and the welding lug plates; wherein the steel pipe cage is formed by splicing at least two semi-arc-shaped prefabricated sections on site, splicing surfaces are fixed through vertical connecting flanges and connecting plates by bolts, and the bolt connecting positions are covered with welding layers to form a maintenance-free structure. The fatigue life of the whole tower is remarkably prolonged, and the tower is suitable for land high-wind-speed draught fans and offshore wind power scenes.

The utility model discloses a lattice type tower and wind generating set, the lattice type tower includes the multiple main support column of the circumferential interval arrangement along the middle axis of lattice type tower, and the multiple auxiliary support piece is arranged between the adjacent two main support column, the multiple main support column all includes the inclined column section, the turning section and the column section gradually setting from bottom to top and constitutes, the inclined column section gradually inclines from top to bottom to the direction close to the middle axis, the turning section is the circular arc shape gradually extending from top to bottom to the direction close to the middle axis, the column section is parallel with the middle axis, and the interval between the column section and the middle axis is less than the interval between the upper end of inclined column section and the middle axis. The utility model can make the overall height of lattice type tower improve greatly, solved the technical problem that the height was limited because the traditional lattice type tower was caused root to open bigger, and the economy and the applicable scene were improved significantly.

The invention discloses a lattice tower structure safety early warning system based on visual dynamic deformation monitoring, and the system comprises an image data processing module which collects an image of a rod piece of a lattice tower through a high-definition camera, extracts the edge features and shape features of the rod piece through an image processing program, compares the extracted features with a standard feature library, and carries out the early warning of the lattice tower structure. If the characteristics are inconsistent, plastic deformation, bending deformation or falling loss of the key component is judged, and when it is recognized that the rod piece is abnormal, an early warning signal is triggered; and the data processing module is used for acquiring a dynamic image sequence of multiple target points of the lattice tower through a binocular camera, and then calculating the three-dimensional coordinate change of each target point in the structural deformation key area related to the characteristics through a stereoscopic vision algorithm. According to the invention, through non-contact visual perception and data intelligent fusion, detection of the safety state of the lattice tower structure is completed, so that accurate diagnosis and operation and maintenance of damage are realized.

The application discloses a combined wind power generation tower and a combination method, and relates to the field of structural engineering.The combined wind power generation tower comprises a single-pipe tower component, a lattice tower component and a conversion component.The single-pipe tower component comprises a first flange arranged at the bottom of the single-pipe tower component.The lattice tower component comprises inclined web members and tower columns, and a polygonal space truss is formed by the inclined web members and the tower columns.The conversion component comprises a connecting table arranged between the single-pipe tower component and the lattice tower component.The connecting table is connected with the single-pipe tower component and the lattice tower component through connecting pieces.The conversion component and the single-pipe tower component are hoisted to a designated position by hoisting equipment, and are installed respectively, that is, the steel connecting table is connected with the tower columns of the lattice tower component through second prestressed bolts, and the connecting table is connected with the connecting table through first prestressed bolts.The combined wind power generation tower has the advantages of low cost, convenient construction, large overall rigidity of the device, simple structure and reasonable force transmission.

The invention relates to the technical field of wind power, in particular to a construction method of a wind power tower, which comprises the following steps of: prefabricating a plurality of hollow concrete-filled steel tube corner column sections by adopting a centrifugal forming process; the multiple corner column sections, transverse supports and inclined supports are spliced on the ground to form at least one lattice tower section, the lattice tower sections are hoisted to the top face of a foundation, and the foundation is an integrally-poured concrete bearing platform; a switching section is installed at the top of the lattice tower section, and a through prestress channel is formed between the switching section and the foundation; pre-stressed tendons penetrate into the pre-stressed channels, so that the pre-stressed tendons extend along the inner walls of the corner column sections and penetrate through the foundation, and the pre-stressed tendons are tensioned; after tensioning is completed, grouting materials are poured into all the corner column sections and the prestress channels, the surrounding area of the foundation is backfilled, and an integrated foundation structure without a tensioning chamber is formed; and an upper tower drum section and wind power equipment are hoisted above the switching section.

The invention discloses a lattice tower cable hoisting and laying device and method.The lattice tower cable hoisting and laying device comprises a hoisting mechanism, a hanging frame mechanism, a clamping mechanism and a guiding mechanism, and the hoisting mechanism is arranged in a channel in the top of a steel tower section and used for hoisting a cable; the hanger mechanism is arranged in the steel tower section channel, is positioned below the hoisting mechanism and is used for temporarily hanging the cable hoisted by the hoisting mechanism; the multiple clamping mechanisms are arranged in a channel of the lattice tower at intervals in the height direction of the lattice tower and used for fixing the cable hanging down from the hanging frame mechanism. The guide mechanism is at least partially arranged in the channel of the lattice section and extends in the height direction of the lattice section, the guide mechanism is detachably connected with the hoisting end of the hoisting mechanism, and the hoisting end can move in the extending direction of the guide mechanism. According to the technical scheme provided by the invention, the reliability and continuity of hoisting operation in an outdoor environment can be improved.

The embodiment of the invention discloses a method for determining the normal section bending moment of a steel-concrete hybrid wind power lattice type tower transfer structure under the bending working condition. The method comprises the steps that the geometric size of the transfer structure, the size of a flange plate, the preset downward axial force and the preset total bending moment are obtained; the transfer structure of any arc angle in the transfer structures is taken as an isolation body for stress analysis to obtain the stress condition, the stress condition comprises vertical shearing force acting on the normal section centroid of the isolation body, and the horizontal plane where the acting point of the vertical shearing force is located and the axis of the isolation body intersect at an intersection point O; determining the moments of all loads to the intersection point O in the isolator based on the stress condition, the flange plate size, the total bending moment, the geometric size and the axial force; and then obtaining a corresponding normal section bending moment through a pre-established normal section bending moment formula. According to the method, the blank of an existing design specification is filled, the reliability of a calculation result is ensured, a scientific basis is provided for optimization design and safety evaluation of the switching structure, and the engineering risk is reduced.

The utility model discloses a prestressed wind power lattice type tower column angle change part, including the steering portion, the upper tower column connecting portion of being located at the top of steering portion and the lower tower column connecting portion of being located at the bottom of steering portion, the steering portion is equipped with the prestressed cable bundle channel along its axial direction, and the prestressed cable bundle channel forms the smooth inner convex structure to the steering side at the position of the steering of prestressed cable bundle. The application realizes the steering of tower column angle change and prestressed cable bundle simultaneously through the additional angle change part, and the angle change part is the separate part independent of tower column component, is convenient for processing, guarantees the unity of tower column component form, construction, is favorable to its scale production. The prestressed cable bundle can realize automatic gathering and smooth steering when tensioning, and reduces the prestress loss caused by steering.

This invention discloses a method for determining the normal section bending moment of a steel-concrete hybrid wind turbine lattice tower transition structure under axial compression. The method involves obtaining the geometric dimensions of the transition structure and a preset downward axial force; taking any arc angle of the transition structure as an isolator for stress analysis to obtain the stress conditions, including: a vertical shear force acting on the centroid of the normal section of the isolator, with the horizontal plane of the shear force's application point intersecting the axis of the isolator at intersection point O; determining the moments of all loads in the isolator about intersection point O based on the stress conditions, geometric dimensions, and axial force; and obtaining the corresponding normal section bending moment using a pre-established formula based on the moments of all loads about intersection point O. This invention not only fills a gap in existing design specifications and ensures the reliability of the calculation results through theoretical derivation and finite element verification, but also provides a scientific basis for the optimized design and safety assessment of transition structures, reducing engineering risks.

The application discloses a transmission line plate-type tower foundation design method based on a genetic algorithm, and has the following steps: a plurality of transmission line plate-type tower foundation structures are randomly generated, and a design parameter combination of each transmission line plate-type tower foundation structure is obtained; a comprehensive safety index and a comprehensive economic index of each transmission line plate-type tower foundation structure are obtained according to the design parameter combination; an actual bearing capacity of the transmission line plate-type tower foundation structure is obtained according to the design parameter combination, and an initial population composed of transmission line plate-type tower foundation structures with actual bearing capacities greater than design loads is obtained through filtering; a comprehensive evaluation function is obtained based on the comprehensive safety index and the comprehensive economic index of each transmission line plate-type tower foundation structure in the initial population; and after the initial population is optimized through a genetic algorithm, the design parameter combination of the transmission line plate-type tower foundation structure is selected according to the comprehensive evaluation function value. The application can improve the overall safety and economy of the transmission line tower foundation.