269 results about "Curved beam" patented technology

The invention provides an ultra-short beam homogenization transmission line system and method based on a four-eight-pole composite magnet. The system comprises the four-eight-pole composite magnet, a system, a linear beam homogenization structure, a bent beam homogenization structure and secondary iron used for a beam homogenization transmission line. The system further comprises an ultra-short linear beam homogenization transport line, an ultra-short bent beam homogenization transport line, an ultra-short linear bent composite beam homogenization transport line and an ultra-short symmetrical bent beam homogenization transport line based on the homogenization structure and / or the dipolar iron. The method comprises an exciting current debugging method based on the four-pole and eight-pole composite iron and a linear type and bending type beam debugging method. According to the invention, the problem that the maximum enveloping part on the transmission line is occupied and the effect of octopole iron cannot be fully exerted is solved; the problems that the beam envelope of the position where the octopole iron is located is small, and the requirement for the field intensity of the octopole magnet is high are solved. The problem that the civil engineering shielded around the transmission line is more expensive because the transmission line is too long is solved.

A method for calculating an opening response of a shield tunnel with supports. A rectangular opening is formed in the shield tunnel, and the supports is arranged in the shield tunnel. Calculating a segment response of the tunnel after opening comprises: dividing segments into sections along the longitudinal seam to obtain transfer equations within and between sections, with internal forces at the opening being 0; simulating, by Timoshenko curved beam and straight beam theory, segments and supports; simulating, by radial, tangential and rotating three-directional springs, longitudinal joints, and simulating, by two-directional shear springs, circumferential joints between adjacent rings; simulating, by a Winkler soil spring, interaction between tunnel and stratum; deriving node equations of intersection of the supports and intersection of the support and segment according to principle of equal displacement and balanced internal force; and combining and solving the above equations to obtain the opening response of the shield tunnel.

The invention relates to a tunnel lining external load inversion method and system based on a physical information neural network. The method comprises the following steps: acquiring monitoring data of the inner surface of a to-be-inverted tunnel lining; according to the curved beam theory, a control equation of external load and lining neutral axis deformation is established, and boundary conditions are determined; according to the material mechanics theory, the corresponding relation between the strain and displacement of the inner side surface of the lining and the strain and displacement of the neutral axis position is established; a physical information neural network is constructed, lining space coordinates serve as input of the physical information neural network, neutral axis normal displacement, tangential displacement and lining external load at different coordinates serve as output, and neutral axis displacement is converted into lining inner surface strain and displacement; the physical information neural network is trained, so that the input and output relation meets the control equation, boundary conditions and monitoring data of the external load and lining deformation, and the normal displacement, tangential displacement and lining external load of the neutral axis at the corresponding coordinates are obtained, namely, the inversion result is obtained.

The invention belongs to the field of computer aided design, and discloses a design method of a multistable metamaterial with an ideal energy absorption characteristic, which comprises the following steps of: firstly, carrying out theoretical analysis on a buckle to establish a mathematical model; then, according to the theoretical solution of the rigidity value of the buckle structure, reverse topological optimization design is carried out on the curved beam, so that a force displacement curve of the curved beam has negative rigidity and peak force corresponding to the buckle. The buckle structure and the optimized and customized curved beam are assembled through the functional part, and the multistable metamaterial unit cell with the ideal energy absorption characteristic can be obtained. And programming design is carried out on the unit cells, so that the required metamaterial can be constructed to meet the energy absorption requirement under the complex load. The technical scheme is widely applicable to the fields of aerospace, automobile industry, building protection and the like, and excessive rebound of impact energy is avoided while the impact resistance of equipment is improved.

The invention discloses a multi-optical-path ellipsoid cavity and secondary amplification resonance-based photoacoustic gas sensor and process, and relates to a photoacoustic gas sensor in the technical field of photoacoustic spectrum and trace gas detection. The device comprises an optical fiber collimator (1), an air hole (2), a laser incidence hole (3), a multi-optical-path ellipsoid reflection cavity (4), a curved beam waist resonance tube (5) and an electrical microphone (6), the optical fiber collimator (1), the laser incidence hole (3), the multi-optical-path ellipsoid reflection cavity (4), the curved beam waist resonance tube (5) and the electrical microphone (6) are connected in sequence; and the air holes (2) are respectively formed in two sides below the multi-optical-path ellipsoid reflection cavity (4). The invention has the following advantages and positive effects: the photoacoustic sensor has the advantages of high utilization rate, high sensitivity, low noise level and good system stability; the invention provides a new thought for a novel resonant high-sensitivity photoacoustic sensor, and has a huge application prospect in the field of photoacoustic spectrum gas detection.

The invention provides a large-view-field and high-temporal-spatial-resolution light sheet imaging system and method, and relates to the field of optical microscope imaging, and the system comprises a laser which is used for generating Gaussian laser; the 1 / 2 wave plate is used for adjusting the polarization direction of the laser; the spatial light modulator is used for light field regulation and control, and the Gaussian laser is modulated into a bent light beam through the spatial light modulator; the scanning galvanometer is used for synchronously scanning the modulated exciting light and controlling the light beam to form area array imaging on the sample; the scanning lens is positioned behind the galvanometer and is used for collecting the laser beams subjected to area array scanning, so that the laser is focused to a target area of the sample; the tube lens I is matched with the illumination objective lens to form a microscope system; the sample pool is used for placing and fixing a sample; a four-dimensional displacement table, a detection objective lens, an optical filter and a camera. According to the invention, through LSFM imaging of the curved light beam with the axial focal length obviously stretched, high-flux three-dimensional imaging with large field of view and high spatial-temporal resolution is realized.

The invention discloses a method for calculating stress and deformation of a roller carrier supporting thin-walled cylinder under the action of dead weight, which comprises the following specific steps of: S1, calculating the bending moment and deflection of a cylinder body in the longitudinal direction by adopting an overhanging beam model in the longitudinal direction, and determining the optimal position of the roller carrier in the longitudinal direction according to the maximum bending moment minimization and the maximum deflection minimization of a beam; s2, transversely utilizing symmetry to establish a semicircular curved beam model, and calculating bending moment and displacement in a transverse plane of the cylinder by adopting a Temosinke beam theory; s3, calculating the maximum stress in the cylindrical surface according to the in-surface bending moment, and determining the optimal half wrap angle required by the strength; and S4, calculating the ovality and root-mean-square roundness of the curved beam according to the displacement, and determining the optimal half wrap angle required by deformation. According to the method, the maximum stress and the deformation shape of the thin-walled cylinder are accurately predicted, and the optimal wrap angles of the roller carrier under the strength requirement and the deformation requirement can be determined to be 67.4 degrees and 90 degrees respectively, so that the optimal wrap angle is suggested to be between 67.4 degrees and 90 degrees in engineering.

A new and old bridge widening structure adapting to multi-directional displacement belongs to bridge construction technology; it includes an anchoring structure and a block simply supported steel plate beam spanning structure arranged on the new and old bridges; expansion joints are arranged between the block simply supported steel plate beam spanning structures; the anchoring structure is an inverted L-shaped steel or welded steel plate with a comb-shaped tooth plate; a supporting bracket device is arranged at the lower part of the anchoring structure; the simply supported steel plate beam spanning structure includes a comb-shaped tooth plate steel plate with comb-shaped tooth plates matching the anchoring structure at both ends, the comb-shaped tooth plate steel plate is provided with two transverse steel ribs and a stiffening steel plate along the bridge direction, and a movable support mechanism is arranged under the two transverse steel ribs. The present invention adopts a longitudinal modular block simply supported steel plate beam spanning structure and a support system suitable for multi-directional displacement, which can adapt to the vertical flexural deformation difference and longitudinal deformation, transverse deformation, torsional deformation of curved beams and single-support beams caused by the different stiffness of the new and old bridges, and can be quickly constructed and replaced.

The invention provides a unit cell structure design method and device based on nickel-titanium shape memory alloy, and relates to the technical field of intelligent materials and structures.The method includes the steps that relevant characteristic parameters of nickel-titanium alloy are collected, a mechanical property index, a thermal stability index and a reliability index are generated, and then a phase change temperature index is obtained through comprehensive calculation; and the phase change temperature threshold is corrected, the geometrical shape and the bonding mode of the unit cell structure are determined, and the quasi-zero-stiffness curved beam, the supporting frame and the connecting part of the unit cell structure are optimally designed in combination with the corrected phase change temperature threshold. According to the method, through characteristic parameter pretreatment, mechanical property index calculation and unit cell structure geometric optimization of the nickel-titanium shape memory alloy, the excellent performance under different phase change states is achieved, and the buffering energy absorption and low-frequency vibration isolation functions of the alloy are improved.

The invention discloses a novel three-dimensional cylindrical negative stiffness energy absorption structure and a design method thereof.The novel three-dimensional cylindrical negative stiffness energy absorption structure comprises an energy absorption structure body, the energy absorption structure body is composed of an inner cylindrical face, an outer cylindrical face and an internal periodic structure, and the internal periodic structure is provided with novel biaxial negative stiffness honeycomb unit structures distributed periodically; and each novel biaxial negative stiffness honeycomb unit structure is provided with an upper bent beam structure and a lower bent beam structure. Compared with a traditional hexagonal honeycomb structure, the novel three-dimensional cylindrical negative-stiffness energy absorption structure has better mechanical properties, the energy absorption effect is remarkably improved, good repeatability is achieved, and compared with a traditional two-dimensional negative-stiffness structure, the application range of the three-dimensional cylindrical negative-stiffness energy absorption structure is expanded; the movement requirements of the structure in some aspects are better met, application and popularization are facilitated, and even an assumption is provided for proposing a three-dimensional spherical shell energy absorption structure.

The invention discloses a method for testing interlayer tensile strength of a ceramic matrix composite material. Comprising the following steps: acquiring the geometric dimension of a sample, performing surface treatment on a test surface of the sample, marking a test section of the sample, acquiring the geometric dimension of a four-point bending clamp, determining a placement mode of the sample and a camera, and capturing a displacement field of the test surface of the sample by using the camera while performing a curved beam four-point bending test. Obtaining the load value and stroke of the first load drop, extracting the in-situ strain of the sample by using a camera, deducing a formula for calculating the interlayer radial and tangential modulus ratio of the sample, carrying out calculation, and calculating the interlayer tensile strength of the sample by using the existing formula. According to the method disclosed by the invention, the modulus ratio of the interlayer radial direction to the interlayer tangential direction is obtained by using in-situ strain, the problem that the interlayer radial modulus is difficult to accurately determine directly through the test is solved, and the accuracy of the interlayer tensile strength of the ceramic matrix composite material measured through the curved beam four-point bending test is improved.

The invention discloses a free-form surface beam shaping device and method, and belongs to the technical field of light distribution regulation and control. The free-form surface beam shaping method provided by the invention comprises the following steps: firstly, generating a standardized incident and emergent surface grid distribution diagram, then respectively mapping the standardized incident and emergent surface grid distribution diagram to a free-form surface and a target surface, and then calculating normal vectors of corresponding sampling points on the free-form surface according to the directions of incident light and emergent light, sampling points on the free-form surface are calculated based on normal vectors, and the method can design a free-form surface optical element to regulate and control light distribution. By integrating the designed free-form surface optical elements into the optical element array, light distribution regulation and control can be carried out on multiple light beams. The design method has very strong universality, can design free-form surface light distribution regulation and control aiming at multiple light sources and multiple light beams, realizes application in a high-power application scene, and can realize accurate regulation and control on non-zero expansion quantity light beams.

The utility model relates to a novel electro-tricycle bearing type frame structure, which belongs to the technical field of tricycle frames and comprises a right bent pipe, an upper-layer frame camber beam and a lower-layer frame camber beam which are oppositely arranged. An upper-layer frame front beam is connected between the two upper-layer frame camber beams and extends to the outer sides of the upper-layer frame camber beams, upper-layer frame vertical supports are connected between the upper-layer frame camber beams and the lower-layer frame camber beams, the bent positions of the upper-layer frame camber beams are connected with the upper surfaces of the lower-layer frame camber beams, a middle beam is connected between the front cross support and the connecting beam, and a lower cross support is connected between the middle beam and the lower-layer frame camber beams. And a front vertical beam is mounted on the middle beam. After the structure is adopted, the tricycle frame has the advantages that the upper-layer frame camber beam and the lower-layer frame camber beam are connected through the connecting beam, the front cross brace, the reinforcing cross brace and the upper-layer frame front beam according to a tricycle frame produced according to a novel tricycle type, the tricycle frame is formed in a welding mode, the strength is greatly improved, the surface is smooth after forming, and the weight is well borne.

A mechanical system includes a curved beam and a motor coupled to the curved beam. The curved beam is configured to buckle at two different locations along the positive and negative portions of its load / displacement curve, corresponding to opposite and equal sense bending directions. The motor is configured to impart a flapping motion to the curved beam.

The invention provides a curved beam bridge anti-overturning device utilizing a pulley block and an adjusting rod. The curved beam bridge anti-overturning device mainly comprises a steel strand, a fixed pulley, a movable pulley, a supporting rod, the adjusting rod, a steel sleeve, a limiting block, an anchor rod, an anchor ring, an anchoring block, a gasket, an anchor hole, a bolt, a hexagon head and a screw rod. By tensioning the steel strands and combining the pulley blocks, the device can effectively optimize force transmission in the beam body. Meanwhile, the arranged supporting rods can effectively restrain transverse displacement of the curved bridge and resist overturning moment of a single curved bridge. The two ends of the adjusting rod are connected with the supporting rod and the steel strand respectively, and efficient transmission and optimization of force between the supporting rod and the steel strand are achieved through the lever principle. When the curved bridge is subjected to eccentric load or dynamic load, the mutual connection of the structures can obviously optimize the force transmission in the bridge body and effectively restrain the transverse displacement of the bridge, so that the anti-overturning capability of the curved bridge is enhanced. The device provides an innovative solution for improving the safety of the curved bridge under the action of eccentric load or dynamic load.

The invention belongs to the technical field of precision machining equipment, and discloses a curved beam variable-rigidity fast tool servo device and a using method thereof.The curved beam variable-rigidity fast tool servo device comprises three flexible mechanisms, namely a single straight circular flexible hinge playing a guiding role, a straight beam flexible hinge and a flexible curved beam playing a variable-rigidity function; the driving component comprises three groups of piezoelectric ceramics and is used for driving the flexible mechanism to deform; the magnetorheological elastomer is mainly used for changing the rigidity of the structure; the tool rest seat and the rigid base are mainly used for placing tools; according to the invention, rigidity change of the magnetorheological elastomer and pretightening force provided for the curved beam by the piezoelectric ceramics on the left side and the right side can be realized simultaneously through an external magnetic field, so that the rigidity of the flexible curved beam is changed, and the rigidity of the flexible curved beam and the rigidity of the core layer magnetorheological elastomer are connected in parallel; therefore, the rigidity of the device can be changed independently and also can be changed synergistically.

The invention relates to the technical field of overhead line system cantilever installation, in particular to railway overhead line system cantilever installation equipment which comprises a hanging basket fixedly installed with an external climbing crane mechanical arm, an arc-shaped beam is slidably connected to the middle of the hanging basket in a clamped mode, and a first carrying plate and a second carrying plate are fixed to the two sides of the arc-shaped beam respectively. First motors used for driving the arc-shaped beam to rotate are fixed to the two sides of the hanging basket correspondingly, and two second motors are fixed to the top face of the first carrying plate. According to the invention, the motor II drives the poke rod to rotate, so that the inclined cantilever can be automatically inserted into the mounting hole of the lower insulator, and the motor I drives the arc-shaped beam to rotate upwards by taking the hinged position of the lower insulator and the supporting column as the circle center, so that the arc-shaped beam moves the flat cantilever to the position of the mounting hole of the upper insulator; and finally, the whole cantilever is pushed towards the supporting column through the poke rod again, the cantilever is automatically installed between the two insulators, and the cantilever installation efficiency can be improved.

The invention belongs to the technical field of vibration isolation, and particularly relates to a quasi-zero stiffness metamaterial sandwich structure, a vibration isolation device and a manufacturing method. The quasi-zero stiffness metamaterial sandwich structure is formed by periodically arranging unit cells in the horizontal direction, and each unit cell comprises an upper panel, a lower panel, a QZS resonator core body and a vertical supporting column; the QZS resonator core comprises a central mass block, QZS resonator units are arranged on the upper portion and the lower portion of the central mass block in a mirroring mode, each QZS resonator unit is composed of two quasi-zero-stiffness unit cells which are arranged in a crossed mode, and each quasi-zero-stiffness unit cell is composed of a negative-stiffness component comprising a horizontal curved beam and a positive-stiffness component comprising an oblique straight beam. According to the sandwich structure, the quasi-zero-stiffness resonator of a novel structure serves as a core body, wider application in the ultra-low frequency vibration reduction field can be achieved, the band gap is adjustable, and the problems that a traditional metal base material structure is high in band gap frequency and limited in application field can be solved.

The invention provides an arc-shaped beam bending device for steel structure machining, and belongs to the technical field of machining. According to the structure, a pressing roller is connected to a sliding block, a plurality of electric cylinders are arranged on a base table, the free ends of the electric cylinders are connected with pushing rollers, a plurality of first motors are arranged on the base table, guide wheels are connected to main shafts of the first motors, a base is fixedly connected to the side of the base table, and a sliding way and a rack are fixedly connected to the base; the rack is parallel to the sliding way, a sliding table is arranged on the sliding way, a gear is arranged on the sliding table, the gear and the rack are in matched transmission, a second motor is fixedly arranged on the sliding table, and the second motor is in transmission connection with the gear. Bending machining is carried out on the conveying channel of the steel beam through the push rollers and the guide wheels, and the steel beam bending machine is suitable for high-hardness and large-curvature machining scenes and has the high yield. Meanwhile, the cutting mechanism and the welding mechanism are additionally arranged, multi-procedure operation can be continuously completed, and the overall process efficiency is improved.

The invention discloses a group space bending-twisting-shaped arc-shaped inclined column and inclined beam steel structure and a jacking construction method thereof. The whole annular steel structure is composed of inclined columns and inclined beams. A box-shaped inclined column and a box-shaped inclined beam are adopted in the steel structure, so that an inclined column longitudinal stiffening plate, an inclined column transverse stiffening plate and an inclined beam longitudinal stiffening plate are conveniently arranged in the steel structure, and a reasonable structural layout is provided for overall jacking; an oblique beam observation exhaust and grout supplementing hole communicated with the outside is formed in the position, located above the oblique beam longitudinal stiffening plate, of the higher end of the box-shaped oblique beam and used for observing whether the box-shaped oblique beam is completely filled with grout or not, exhausting is achieved, and the situation that grout is possibly supplemented in the later period is achieved, and the construction method that the box-shaped oblique column and the box-shaped oblique beam are integrally jacked and poured together is achieved. And the use period is greatly shortened, the construction efficiency is improved, the structural strength is very good, and the requirement that the bearing capacity is increasingly increased can be met.

The invention relates to a variable-width volute spiral spring design method and a volute spiral spring, and belongs to the technical field of volute spiral springs.The variable-width volute spiral spring design method comprises the steps that S1, polar angles corresponding to plane spiral lines at different arc length positions are determined; s2, determining curvature radiuses corresponding to the planar spiral lines at different polar angle positions; s3, according to different curvature radius parts, the initial section width of the volute spiral spring is designed; and S4, the initial width of the volute spiral spring is adjusted according to the ratio of the radius to the half thickness of different parts, and uniform distribution of bending stress is achieved. The core of the method is that a corresponding width change rule is designed according to a change rule of bending stress along with curvature radius disclosed by a curved beam theory. By means of the method, the maximum bending stress of all the sections can be equal, and therefore the bearing capacity and stability of the volute spiral spring are improved.

The utility model discloses an adjustable bottom cross beam assembly of a multi-curvature camber beam extradosed cable-stayed bridge hanging basket. Relates to the technical field of cable-stayed bridge hanging basket construction, and comprises a bottom cross beam which is divided into two sections from a cross slope change point, and a gap is arranged between the two sections of bottom cross beam; the two connecting pieces are arranged in the gap, each connecting piece comprises a connecting plate and a pin shaft hole plate, the connecting plates are connected with the bottom cross beam, the pin shaft hole plates are vertically arranged on the connecting plates, pin shaft holes are formed in the pin shaft hole plates, the pin shaft hole plates on the two connecting pieces make contact with each other, and the two pin shaft hole plates are hinged through a pin shaft. According to the utility model, the two sections of bottom cross beams are respectively provided with the connecting pieces, and the connecting pieces on the two sections of bottom cross beams are hinged through the pin shaft, so that the left bottom cross beam can be adjusted up and down, the elevation of the bottom die and the accuracy of the cross slope of the beam bottom are ensured, and compared with the conventional method, the operation is simple, the consumed time is shortened, and the cost is saved.

A framing system for a construction set comprising a number of interchangeable elements which can be arranged to construct a variety of three-dimensional structures, as well as individual, stand-alone floors, which in turn are adapted to be stacked on one another. In some embodiments, the system comprises at least one central unit, a plurality of outer mid-columns, at least one tie beam corner unit, and / or at least one curved beam unit which cooperate to form a variety of stand-alone floors. The system comprises additional components which increase the stability of the construction set, including but not limited to internal corner brackets, cross pins, cross studs, square panels, and rectangular panels.

The invention belongs to the technical field of cement-based composite metamaterials, and particularly relates to a cement-based metal framework reinforced concrete metamaterial. According to the concrete metamaterial, negative stiffness layers and energy absorption layers are alternately arranged, each negative stiffness layer comprises two curve beams which are symmetrically arranged in the length direction, each curve beam is structurally composed of a repeating unit with the middle portion arched and the two ends pre-bent, each energy absorption layer comprises a framework and concrete, the framework is filled with the concrete, and the negative stiffness layers and the energy absorption layers are arranged in a staggered mode. The framework is formed by periodically arranging a plurality of inwards-concave hexagonal units in the length direction, and the horizontal side length of each inwards-concave hexagonal unit makes contact with the arch in the middle of the curve beam. The non-filled negative stiffness framework area and the negative Poisson's ratio framework area filled with concrete are constructed, function partition response of the structure in different impact stages is achieved, flexible regulation and control of performance can be achieved through topological structure adjustment, and therefore the crashworthiness and adaptability of the structure are improved.

The present invention discloses a support structure for underpasses with anti-pullout piles and a construction method thereof, which solves the problems of high difficulty and low safety factor in the prior art of removing anti-pullout piles during concealed excavation of existing tunnels and / or buildings. The support structure for underpasses with anti-pullout piles of the present invention comprises a connecting steel pipe that connects the existing building structure and the tunnel segment using a pipe curtain method, wherein a curved beam plate is provided on the side of the tunnel segment corresponding to the connecting steel pipe, and a reinforcing ring beam is provided on the side of the existing building structure corresponding to the connecting steel pipe, one end of the connecting steel pipe passes through the tunnel segment and is connected to the curved beam plate, and the other end passes through the existing building structure and is connected to the reinforcing ring beam and / or the existing building structure; after one side of the existing building structure is connected to the tunnel segment via the connecting steel pipe, the existing anti-pullout pile is removed, and then the other side of the existing building structure is connected to the tunnel segment via the connecting steel pipe. The present invention uses the pipe curtain method to construct connecting steel pipes, and uses the connecting steel pipes to connect the tunnel segments and the internal curved steel beams with the upper existing building structure to form a whole, so that the tunnel segments and the upper structure have a common anti-floating effect, and can safely and efficiently realize the safe construction of tunnels passing under existing buildings.

A framing system for a construction set comprising a number of interchangeable elements which can be arranged to construct a variety of three-dimensional structures, as well as individual, stand-alone floors, which in turn are adapted to be stacked on one another. In some embodiments, the system comprises at least one central unit, a plurality of outer mid-columns, at least one tie beam corner unit, and / or at least one curved beam unit which cooperate to form a variety of stand-alone floors. The system comprises additional components which increase the stability of the construction set, including but not limited to internal corner brackets, cross pins, cross studs, square panels, and rectangular panels.

The utility model discloses a tool for guaranteeing the assembling and welding precision of a curved beam of a monorail turnout beam, which relates to the technical field of manufacturing of transportation equipment and specifically structurally comprises a plurality of support components distributed at intervals; the transverse supports are installed between every two adjacent supporting assemblies respectively, and the transverse supports are combined to form an arc-shaped tool face; the supporting assembly comprises two ground platforms which are arranged in a spaced mode. The supporting plates are mounted on the ground platforms in a one-to-one correspondence manner; the two side baffles are installed at the two ends of the ground platform located on the outer side respectively, and the tops of the side baffles are located on the same horizontal plane. The utility model solves the technical problem that the existing monorail turnout curved beam lacks a tool for manufacturing precision.

Disclosed in the present invention are a magnetic-levitation spatial curved beam molding system and molding method. The magnetic-levitation spatial curved beam molding system comprises: a side mold assembly; and functional part mold plate assemblies, wherein two functional mold plate assemblies are correspondingly arranged on two side mold plates, respectively, each functional part mold plate assembly comprises functional part mold plates used for locating a magnetic levitation functional part and at least two vertical adjustment assemblies, and driving ends of vertical adjustment parts are movably fitted with the bottoms of the functional part mold plates, respectively so as to adjust the spatial locations and angles of the functional part mold plates. The functional mold plate assemblies are provided to locate and mount the magnetic levitation functional part, and the vertical adjustment assemblies and lateral adjustment parts are provided to implement any adjustment of the spatial angles and locations of the functional part mold plates, so as to satisfy the requirement of adjusting the spatial location of the magnetic levitation functional part on a spatial curved beam, such that the arrangement location of the magnetic levitation functional part can be better matched with the structure of the spatial curved beam, and the molding precision of the spatial curved beam is ensured.

The utility model relates to a straddle carrier frame which comprises a main frame, extending frames are symmetrically arranged at the left end and the right end of the main frame, each extending frame comprises a bearing beam and a supporting base connected with the main frame, and the supporting bases are arranged at the two ends of the bottom of the bearing beam. The supporting base comprises a transverse plate arranged at the lower end of the bearing beam and a bent beam used for supporting the transverse plate, and reinforcing ribs are welded to the connecting position of the bent beam and the main frame. The design of the extension frame allows the frame to adapt to a smaller plant space while keeping the strength, and is very useful for a warehouse or a factory environment with limited space. By using the camber beams and the supporting transverse plates, the length of the supporting transverse plates is shortened, so that the weight of the frame is reduced, and meanwhile, the required strength is maintained.

The utility model provides a bridge girder erection machine capable of satisfying double-layer cast-in-place beam height limit width limit beam erection construction, which comprises a machine arm, a first column, a second column, a hanging curved beam and a hanging beam crane, the first column is installed on a lower ear beam at the front end of the machine arm and fixedly connected with the machine arm through a gear rack, the second column is installed on an upper ear beam of the machine arm, and the hanging curved beam is fixedly connected with the machine arm through a gear rack. The second column is fixedly connected with a machine arm through a gear rack, an anchoring cross beam is arranged on one side of the machine arm, a front beam transporting vehicle and a rear beam transporting vehicle are arranged below the machine arm, and a hanging curved beam is installed on one side of an upper lug beam of the machine arm. The device is suitable for the width-limiting working condition of portal piers after construction of upper-layer cast-in-place beams of double-layer beams erected by a bridge girder erection machine and the height-limiting working condition of erecting lower-layer beams, low-clearance-height beam erection of the lower-layer beams under the double-layer beam working condition can be achieved, and narrow-width space beam erection of the lower-layer beams under the double-layer beam working condition can be achieved; the anchoring type hanging curved beam is adopted to replace a second column to hang the machine arm, and the hole passing and beam erecting requirements of the bridge girder erection machine are met.