113 results about "Lattice girder" patented technology

The invention relates to the technical field of steel structure construction, aims to solve the problem of low precision caused by an existing integral hoisting mode, and provides an integral hoisting system and method for a large-span steel truss girder. Comprising a control module, a hydraulic lifting module, a three-dimensional laser scanner, a total station and an identification acquisition identifier arranged on a steel truss girder to be lifted, and the hydraulic lifting module, the three-dimensional laser scanner and the total station are connected with the control module; a hydraulic synchronous lifting technology is fused with a space positioning technology and a three-dimensional laser scanning technology of the total station, and a hydraulic lifting module is automatically adjusted by adopting data feedback of the three-dimensional laser scanner and the total station, so that the synchronization rate and the accuracy during overall lifting are improved, and the system is suitable for overall lifting of the large-span steel truss girder.

According to the 3D printing concrete truss girder structure based on three-dimensional steel bar reinforcement and the construction method, through space welding connection of the three-dimensional conical steel bars and the top plane steel bars, the interlayer bonding performance and the overall stress performance of a 3D printing concrete truss girder are remarkably improved. The three-dimensional conical steel bars comprise plane steel bars matched with the truss girder in length and width and a plurality of three-dimensional conical steel bar units, the three-dimensional conical steel bar units are arranged in the mode that the height of a three-dimensional space component formed by bending metal steel bars crosses over at least one or more concrete printing layers, and the plane steel bars are buried in the lower layer concrete. And the upper ends of the three-dimensional conical steel bar units are fixedly connected with the top vertical rod section steel bars of the top plane steel bars on the upper layer or the higher layer or the vertical bars of the next plane steel bars, so that an integral space steel bar framework is formed. The steel plate has higher shear bearing capacity, better ductility and a better failure mode, and is suitable for load-bearing components in various building and bridge engineering.

The utility model relates to a steel truss structure for mounting a door opening curtain wall. The steel truss structure comprises a fixed plate, a rib plate seat and a truss girder, the fixing plates are used for being fixed to the left inner wall and the right inner wall of a door opening through anchoring parts, and rib plate bases are vertically installed on the end faces of the fixing plates at intervals up and down. The truss girder is horizontally distributed between the two fixed plates, and the end part of the truss girder is supported between the rib plate seats which are vertically arranged at intervals in the vertical direction; the left end and the right end of the truss girder are fixed to the fixing plates respectively and fixedly connected with the corresponding upper rib plate base and the corresponding lower rib plate base at the same time. And a mounting structure for mounting a curtain wall keel is arranged on the outer side of the truss girder. The door opening lintel effectively solves the problems that an existing door opening lintel is difficult to bear a curtain wall structure, and installation and lighting of a window can be affected due to the fact that a hanging component is arranged, not only is the aim of hanging a building facade curtain wall guaranteed, but also the appearance effect and quality of a facade are achieved.

The invention belongs to the technical field of truss girder hoisting, and particularly relates to intelligent hoisting equipment for a suspension bridge truss girder in an extreme wind environment and a hoisting construction method.The intelligent hoisting equipment comprises a floating crane, and a hoisting tool component is fixedly installed at the lower end of a steel wire rope of the floating crane and comprises a posture adjusting device and an offset adjusting device. According to the intelligent hoisting equipment for the suspension bridge truss girder in the extreme wind environment and the hoisting construction method, by arranging the sling component and integrating the posture adjusting device and the offset adjusting device, multi-degree-of-freedom active adjustment can be conducted on the hoisted truss girder. The offset adjusting device generates reverse inertia force by driving the mass block to move, so that horizontal swinging of the truss girder caused by wind load is effectively counteracted; the posture adjusting device accurately corrects pitching and rolling postures of the truss girder by adjusting the length of the steel wire rope set, and therefore the overall wind resistance stability and posture keeping capacity of the hoisting system are remarkably enhanced in the extreme wind environment.

The invention belongs to the technical field of bridge construction, and particularly relates to a steel bridge diagonal bracing node fatigue assessment hot spot stress method based on machine learning. By constructing a hot spot stress concentration coefficient Gaussian regression process proxy model of the steel bridge inclined strut nodes, a mapping relation is established among geometric parameters of the steel bridge inclined strut nodes, welding seam type input variables and hot spot stress concentration coefficient output, so that the hot spot stress of different inclined strut nodes on different steel bridges is quickly determined. And in combination with a hot spot stress S-N curve and a random traffic flow loading method, realizing fatigue performance evaluation of the steel bridge diagonal bracing node. The method is suitable for various steel bridge structure systems including diagonal bracing nodes, including truss girders, box girders, long cantilever combined structures and the like, and has good engineering adaptability and popularization value.

The invention belongs to the field of building technology research, and provides a steel truss girder transfer platform aiming at the problems that an existing transfer device is large in occupied field area and multiple in transfer links, the direction of a steel truss girder cannot be kept unchanged all the time in the transfer process, and accurate splicing of the steel truss girder is affected. The hydraulic lifting brackets are arranged on two sides of the direction adjusting vehicle; the direction adjusting vehicle comprises a driving base, an operation table and a rotating assembly connected with the operation table in a matched mode. The steel truss device can be directly arranged at the starting point position of the conveying rail through the direction adjusting vehicle, direction correction can be conducted, multiple transfer devices do not need to be matched to adjust the direction of the steel truss, operation is easy and fast, a rail used for adjusting the direction of the steel truss beam does not need to be arranged, the occupied area is small, and the construction space is saved.

The utility model discloses a multi-camera image acquisition device for building a three-dimensional model of a bridge structure prefabricated part, which comprises a portal steel frame and a track assembly, and the portal steel frame comprises truss columns respectively positioned on two sides of the bridge structure prefabricated part and a truss beam positioned above the bridge structure prefabricated part. The truss girder is mounted at the tops of the two truss columns; cameras are arranged on the truss columns and the truss girders at intervals to form a camera matrix which is fixed in relative position and is used for acquiring image data of the bridge structure prefabricated parts; the rail assembly comprises sliding rails arranged corresponding to the two truss columns respectively, the sliding rails are parallel to the length direction of the bridge structure prefabricated part, and the truss columns are installed on the corresponding sliding rails in a sliding fit mode. According to the multi-camera image acquisition device for building the three-dimensional model of the prefabricated part of the bridge structure, image data acquired by the cameras can be fused by fixing the position relation between the cameras, so that the three-dimensional model of the prefabricated part of the bridge structure is built.

This invention proposes a high-performance, low-cost triangular truss Bailey bridge, comprising an adjustable movable base, crossbeams, bridge deck, truss beams, and crash barriers. The truss beams include a first truss, a second truss, end upper chords, intermediate upper chords, and connecting blocks. Each crossbeam is internally equipped with wind-resistant tie rods and wind hooks. This Bailey bridge features a redesigned triangular truss frame; due to the difference in materials used, the strength of this triangular truss is significantly higher than that of the 200-type truss. This triangular truss Bailey bridge design can utilize standard modular components such as crossbeams, bridge decks, gap plates, wind-resistant tie rods, and wind hooks from the 200-type under-deck bridge, increasing the truss's adaptability and reducing material usage to save costs.

The application discloses a kind of steel column top end truss girder and inclined strut column node construction method, solve how to build integral node and how to realize the technical problems of concrete pouring and vibrating at node;Integral node structure of the application can be calculated and designed by computer software, and is integrally processed and formed in factory, and the problem that node connection positioning, welding difficulty is caused by complex node form and numerous plate parts such as stiffening plate in traditional construction is solved by reserving bracket insertion framework;Two sides of the bolt and the reserved insertion framework are welded, which can solve the problem of template and steel beam connection, and ensure that the stiffness of the integral node part is not damaged;Layered concrete pouring and vibrating solve the problem of limited space caused by complex node form and numerous plate parts such as stiffening plate in traditional construction, and improve construction quality and shorten construction period.

The present application belongs to the technical field of truss girder bending, and particularly relates to a multi-arc continuous bending tool for steel structure truss girder. The tool comprises a tool main body, two support columns in cylindrical shape, a work station, a push hydraulic cylinder and a displacement sensor, a programmable logic controller, and a bending cutter. The top end of each support column is welded with a lifting lug and detachably inserted into the tool main body. The work station, the push hydraulic cylinder and the displacement sensor are installed on the tool main body. The programmable logic controller is electrically connected with the work station, the displacement sensor and the push hydraulic cylinder. The output end of the push hydraulic cylinder is provided with a displacement sensor and a cutter head. The bending cutter is installed on the cutter head. The two support columns are symmetrically located on both sides of the force application direction of the bending cutter. The sensing surface of the displacement sensor faces the displacement sensor. The present application adopts an intelligent springback compensation algorithm, can automatically calculate and accurately execute the compensation amount, fundamentally overcomes the dimensional deviation caused by material springback, ensures the high consistency of the batch workpiece size, and greatly reduces the dependence on the operator's experience.

The invention discloses a plate welding assembly tool and a welding method thereof. The tool comprises a plane supporting platform and a support, wherein the support is located above the supporting platform and used for fixing a truss beam of a pressing mechanism; the pressing mechanism at least comprises two groups of telescopic air cylinders or oil cylinders; a strip-shaped opening is formed in the middle of the steel structure plane pressing plate; a slotted copper liner of which the middle part is provided with a strip-shaped groove; the tool is used for butt seam welding of a plane to-be-welded plate. According to the tool, non-rigid pressing plate connection is adopted, an air cylinder piston rod is only in surface contact with the pressing plate, and the problem of insufficient local pressing caused by traditional rigid connection is solved; the shape is controlled by adopting the slotted copper gasket, a groove matching structure is arranged, and the qualification rate is greatly improved in combination with the high thermal conductivity of the gasket; the tool can be automatically matched, is matched with the repeated positioning precision of a robot welding system, is simple in structure and convenient and fast to operate, and can guarantee the assembly precision, the pressing effect and the back face forming quality at the same time.

The invention relates to a method for producing lattice girders (1) from wires, wherein the lattice girders (1) comprise: chords, with a lower chord arrangement having at least one lower chord (2), in particular two lower chords (2), and an upper chord (3) which is arranged at a specific height (H) relative to the lower chord arrangement; and at least one, in particular two, diagonal chords (4) which extend, for example, in a zigzag manner back and forth between the lower chord arrangement and the upper chord (3), wherein the wires for the chords are fed in a forward direction (V), and the at least one diagonal chord (4) is welded to the lower chord arrangement and to the upper chord (3), wherein the height (H) is adjusted to produce lattice girders of different heights. In order to achieve efficient production of lattice girders in a simple manner, according to the invention, in order to adjust the height (H) between successive lattice girders (1), a completed lattice girder (1) is positioned with a feed-side end (6) at a cutting position (5), whereupon the height (H) is adjusted, after which the completed lattice girder (1) is severed, and the severed wires are retracted in a reverse direction (R) in order to produce the next lattice girder (1) with the adjusted height (H). The invention also relates to an apparatus for carrying out such a method.

The invention relates to a ceiling element for a building ceiling. The ceiling element is designed as a timber-concrete composite. The ceiling element comprises a timber component having one or more formwork structures, a concrete component comprising a precast slab and a cast-in-place concrete topping, a lattice girder, a connector, and a sleeve. The connector is inserted into the sleeve. The concrete component is connected to the timber component via the connector and / or the formwork structure.

The invention provides a truss girder and web girder parameter equivalence method and device based on deformation control, and belongs to the technical field of aircraft structure design. The method comprises the steps that a mechanical model of a truss girder structure is established, and structure parameters of all pull rods in the truss girder structure are determined; constructing a deformation expression of the truss girder structure under the given load based on the structure parameters of the pull rods; establishing a mechanical model of the web beam structure, and determining structural parameters of edge strips and webs in the web beam structure; constructing a deformation expression of the web plate girder structure under the given load based on the structural parameters of the edge strip and the web plate; the deformation of the truss girder structure and the deformation of the web girder structure under the given load are kept consistent, so that a rigidity equivalent expression is obtained based on the deformation expression of the truss girder structure and the deformation expression of the web girder structure, and the equivalent relation between truss girder structure parameters and web girder structure parameters is obtained based on the rigidity equivalent expression.

The invention belongs to the technical field of truss beam columns, and particularly relates to a construction device of a large-span steel pipe truss beam column structure, which comprises a crane and a steel pipe truss base, a lifting seat is mounted above the crane, a truss beam column body is mounted above the steel pipe truss base, and a counterweight transverse seat is mounted at the end part, far away from the crane, of the lifting seat. Two sliding seats are arranged at the bottom of the balance weight transverse seat in a sliding mode, fixing frames are installed at the bottoms of the two sliding seats, winding steel ropes are arranged below the fixing frames, and the winding steel ropes are used for fixing a truss beam column body and lifting the truss beam column body upwards through a lifting seat; by controlling movement of the sliding seat, the fixed frame and the winding steel rope, the winding steel rope can fix multiple positions of the truss beam column body, the problem that due to the fact that the number of asymmetric structures of the truss beam column body is large, hoisting of the truss beam column body is troublesome is solved, the problem that the truss beam column body swings in the hoisting and transferring process is solved, construction of the truss beam column body is facilitated, and the construction efficiency is improved. And the safety is high.

The utility model discloses a kind of reinforcing structures between steel structure factory building beam column steel frame, including the inclined brace component being arranged between existing steel column and existing steel frame beam, inclined brace component includes inclined brace rod, and column connecting plate and beam connecting plate being arranged at both ends, column connecting plate connects the existing steel column, and beam connecting plate connects the existing steel frame beam;Existing steel column is provided with column reinforcing plate in the region of connecting the column connecting plate, and existing steel frame beam is provided with beam reinforcing plate in the region of connecting the beam connecting plate;Adjacent the existing steel column between being arranged at factory building side wall is further provided with detachable intercolumnar rigid tie rod, and the setting height of the intercolumnar rigid tie rod is not lower than the height of column connecting plate at the position. Through the above setting, the safety and stability of the roof truss beam can be better ensured, the roof permanent load can be increased, the overall structure is simple, and the original structure does not need to be disassembled or adjusted, so the installation and construction are easy.

The invention provides a goaf slope lattice beam strain monitoring and demodulation system based on MEMS optical fiber sensing, and belongs to the technical field of goaf slope lattice beam strain monitoring and demodulation. In order to solve the technical problems that an existing lattice beam monitoring system can only measure physical quantity in one direction, cannot achieve full-time coverage and cannot monitor dynamic and static strain of a lattice beam at the same time in measurement, the adopted technical scheme is that balls capable of rotating are arranged at the top and the bottom of a first rolling screw and the top and the bottom of a second rolling screw; the first rolling screw and the second rolling screw can roll on a first rolling screw limiting groove formed in the horizontal direction through the balls, and the first rolling screw and the second rolling screw are connected and fixed through a first connecting rod. A first spiral compression spring is arranged in the first spring limiting groove, and a second spiral compression spring is arranged in the second spring limiting groove. The method is applied to goaf slope lattice girder strain monitoring.

The present application relates to the technical field of bridge construction, and provide a kind of hoisting method and hoisting system of cable crane, the hoisting method of cable crane includes: by two the trolley respectively two running mechanisms are moved to the upper of main cable using lifting point conversion mode, two running mechanisms are connected to the set position of main cable;By two trolley respectively two main girder section is moved to the upper of running mechanism using lifting point conversion mode, two main girder sections are connected to running mechanism respectively;By two trolley cooperation, intermediate truss girder is lifted to between two main girder sections, and two ends of intermediate truss girder are connected to main girder section respectively;Two cable winding machines are lifted to corresponding running mechanism respectively, and two cable winding machines are connected to corresponding running mechanism;The present application can be applicable to the portal frame with smaller structure and without sliding system in the early design stage, increase the application range and versatility of hoisting system.

The invention provides a carbon capture tower and a method for manufacturing the carbon capture tower, and the carbon capture tower comprises a carbon capture tower body and a filler layer arranged in an inner cavity of the carbon capture tower body, and further comprises a truss girder arranged in the inner cavity of the carbon capture tower body, the truss girder is positioned at the lower end of the packing layer and is used for supporting the packing layer; the node connecting pieces are fixedly arranged at the two ends of the truss girder and fixed to the inner wall of the carbon capture tower body, the truss girder serves as a core supporting component and is directly located at the lower end of the packing layer to form a rigid supporting face, and the truss girder and the inner wall of the carbon capture tower body are fixedly connected through the node connecting pieces. According to the arrangement, holes do not need to be formed in the wall of the carbon capture tower body, and the structural integrity of the carbon capture tower body is reserved.

The utility model discloses a gate-type support structure and longitudinal support system, the gate-type support structure comprises a truss girder and a diagonal bar, the truss girder comprises a truss upper chord and a truss lower chord, the two ends of the truss upper chord and the truss lower chord are respectively hinged to a column through a first gusset plate, the upper end of the diagonal bar is hinged to the truss lower chord through a second gusset plate, and the upper end of the diagonal bar is hinged to the column through a second gusset plate. The lower end of the inclined supporting rod is hinged to the lower end of the stand column through a third gusset plate, the truss upper chord, the truss lower chord and the inclined supporting rod are each formed by assembling two pieces of angle steel welded together through a connecting plate, and each gusset plate is clamped between the two first wing plates of the two corresponding pieces of angle steel. The two steel angles are assembled to form a main rod piece of the door type supporting structure, stress distribution is uniform and reasonable, the design requirement is met, and the whole structure is more stable and reliable.

The utility model belongs to the technical field of assembly type steel structures, and discloses a single truss girder corner mortise and tenon connection structure which comprises a first fastener, a second fastener and a locking assembly. The first fastener is provided with a first groove body, the second fastener is provided with a second groove body, when the first fastener and the second fastener are mutually buckled, the first groove body and the second groove body are mutually communicated and form a connecting channel, the connecting channel is configured to be arranged on a chord member in a sleeving mode, one end of the connecting channel extends in the first direction, and the other end of the connecting channel extends in the second direction; an included angle is formed between the first direction and the second direction, and the first fastener and the second fastener can be mutually locked through the locking assembly. By means of the arrangement, the single truss girder corner mortise and tenon connection structure can simplify the installation operation of the truss girder at the corner, and the construction efficiency is improved.

This invention provides a concrete formwork device suitable for backfilling over-excavated slopes in reservoir basins, belonging to the field of hydraulic engineering technology. The device includes a trolley assembly, a main truss beam, a first lifting arm, two auxiliary truss beams, a formwork beam structure, a second lifting arm assembly, and a formwork assembly. The trolley assembly includes a first trolley and a second trolley; the main truss beam is connected between the first and second trolleys; the first lifting arm is mounted on the second trolley, and its telescopic end is connected to the main truss beam for driving the main truss beam to rise and fall and adjust its inclination angle; the two auxiliary truss beams are installed on the main truss beam; the formwork beam structure is installed between the two auxiliary truss beams; the second lifting arm assembly is installed on the formwork beam structure; and the second lifting arm assembly is connected to the formwork assembly for driving the formwork assembly to press against the bedrock surface of the over-excavated area of ​​the slope. This invention improves the versatility for different slope gradients and over-excavated areas of different scales.

The application provides a steel lattice beam bridge deck transportation device and relates to the technical field of civil engineering. The steel lattice beam bridge deck transportation device comprises a bridge deck and a transportation vehicle. The bridge deck is fixedly installed with a plurality of shear keys arranged in parallel with each other. The transportation vehicle comprises a channel steel frame. Two symmetrically distributed connecting steel bars are fixedly installed at the bottom of the channel steel frame. Bearings are installed at both ends of the connecting steel bars. Fixed connecting steel wheels are sleeved on the surface end of the bearings located on the side close to the channel steel frame. A circular pipe is fixedly connected to the middle of the channel steel frame. Mounting holes are arranged in a quadrilateral distribution on the surface of the channel steel frame. An installation piece is arranged above each mounting hole. The problems that the amount of steel bars of a steel pipe concrete arch bridge steel lattice beam bridge deck system is large, the bridge deck is full of shear nails and shear keys, common transportation tools cannot drive on the bridge deck, and the steel bars can only be manually lifted to a construction point are solved.

The application relates to the field of steel truss bridge construction technology, and discloses a horizontal rotating construction method for a steel truss girder bridge, which comprises the following steps: S1, lower bearing platform construction, pouring foundation piles in a foundation pit, and then pouring the lower bearing platform on the foundation piles; S2, lower spherical hinge construction, erecting a lower spherical hinge on the lower bearing platform, erecting a slide on the periphery of the lower spherical hinge, and penetrating a pin shaft at the axis position of the lower spherical hinge; S3, upper spherical hinge construction, hoisting the upper spherical hinge and aligning the upper spherical hinge with the pin shaft, then placing the upper spherical hinge on the lower spherical hinge, and inserting the upper spherical hinge on the pin shaft; S4, upper bearing platform construction, arranging a jacking mechanism on the slide, erecting a pouring formwork on the jacking mechanism, then pouring reinforced concrete on the upper spherical hinge, and forming the upper bearing platform; S5, bridge assembly; S6, bridge turning; and S7, bridge closure. The application has the effect of reducing the influence of the river channel or the driving lane and guaranteeing the traffic capacity of the river channel or the driving lane by constructing on one side of the river channel or the driving lane.

The application discloses a unit type overlapped roof membrane structure and a construction method thereof. The unit type overlapped roof membrane structure comprises roof trusses arranged in units, beam column structures and membrane structures connected above each roof truss; adjacent roof trusses are arranged in an up-down overlapping mode at the adjacent positions, and each unit type roof truss is arranged in a wave shape towards the upper side; and a drainage groove is arranged at each overlapping position of the roof truss. The up-down overlapping arrangement of the roof trusses is beneficial to ventilation; the wave shape arrangement of the roof trusses is beneficial to roof drainage and is aesthetically pleasing; the fixing belts of the membrane structures are arranged on the top chord bars and the connecting bars of the trusses, which is beneficial to guarantee the tension and fixation of the membrane structures, and the secondary covering of the waterproof membrane is beneficial to the connection of the membrane structures under large span and the drainage at the interactive connection positions with the water tanks; and the arrangement of the drainage grooves at the ends of the roof trusses is beneficial to guarantee the systematic drainage of the unit type roof trusses.

The utility model belongs to the technical field of concrete mixing equipment, and relates to a novel movable belt conveyor distributing system which comprises a rack, a main belt conveyor is arranged at the top of the rack, a receiving hopper is arranged at one end of the main belt conveyor, a feeding belt conveyor is arranged on one side of the receiving hopper, a bidirectional belt conveyor is arranged at the other end of the main belt conveyor, and a truss girder is arranged on the rack. The two-way belt conveyor is arranged on the truss girder, the two-way belt conveyor and the truss girder are directly provided with a walking device, and the truss girder is provided with a moving trolley. The material distribution device can adjust the material distribution point positions in the left-right direction of the bidirectional belt conveyor and realize the front-back and left-right four-direction arrangement of aggregate in the stock bin, so that the full coverage of the stock bin is realized, dead angles are eliminated, and the space utilization rate and the material distribution efficiency of the stock bin are improved.

This invention discloses a follow-up automatic welding device and processing method for diaphragm wall steel cage truss beams. The frame-type track beam can move vertically to the automatic mesh welding device. The follow-up structural component moves axially along the frame-type track beam and resets. The follow-up structural component can be erected on the upper and lower longitudinal reinforcement bars of the longitudinal truss beam. It can also detect the position information of the longitudinal truss beam to clamp the longitudinal truss beam and move synchronously with it. During the synchronous movement, it moves on the longitudinal truss beam and welds the longitudinal truss beam through the welding gun assembly. The weld quality detection module can move synchronously with the follow-up structural component, so that when the welding gun assembly welds the longitudinal truss beam, the weld quality detection module can synchronously and in real time acquire the welding status of the longitudinal truss beam, thereby accurately controlling the welding quality of the longitudinal truss beam. This achieves synchronous welding of the longitudinal truss beam during the processing of the diaphragm wall steel cage, improving processing efficiency and reducing manual labor intensity.

The application provides a mounting method of a large-span steel truss cantilever special-shaped structure, which comprises permanent support columns, temporary support columns, truss beams, cantilever beams and steel bar truss floor slabs, the permanent support columns and the temporary support columns are used as support seats of the truss beams; the truss beam is an arc-shaped steel truss structure, the arc-shaped two ends are connected with adjacent building components, the cantilever beam is attached to the arc-shaped section of the steel truss and presents a double-layer radial shape; the steel bar truss floor slab is laid on the cantilever beam and is used for pouring concrete as a building structure floor slab in a later period; the method is used for hoisting after partially integrally assembling the components, so as to reduce the frequency of personnel high-altitude operation as much as possible; the stress conditions of structure hoisting and temporary support are accurately and comprehensively analyzed, and then actual operation is carried out; the construction method is safe and reliable; the application range is wide; for complex steel structure installation and construction, especially for more cantilever structures, the method and the idea have good applicability.

The invention relates to the technical field of automatic control, and discloses a balance adjustment control method and system for a multi-power-unit attached lifting platform. According to the method, angle data between a guide frame and a platform truss girder is obtained in real time through an inclination angle sensor, single-machine leveling operation is executed during starting, and synchronous lifting is conducted after it is ensured that the height difference of all power units is within a preset range. In the synchronization process, a self-adaptive control algorithm is adopted, the rotating speed of the motor is dynamically adjusted according to parameters such as motor loss, load distribution and lifting speed, and platform balance is kept. Multiple safety protections such as angle tolerance monitoring, sound-light alarm and emergency shutdown are built in the system, and the operation safety and stability of the platform are improved.