45results about How to "Reasonable force" patented technology

The invention relates to the technical field of automatic machining equipment, in particular to a bending method and a bending device.The bending method provides bending device.The bending device comprises a first bending unit and a second bending unit, the first bending unit is provided with a first bending part, and the second bending unit is provided with a second bending part; the method comprises the following steps: transferring a flexible structure to a first bending unit; the first bending part is driven to do jacking motion in the first direction to jack the first bending position of the flexible structure, so that the flexible structure forms a first bending structure at the first bending position; the flexible structure bent for the first time is transferred to a second bending unit; and the second bending part is driven to do translational motion in the second direction, so that the flexible structure is pushed to be close to the position of the second bending position, and the flexible structure forms a second bending structure at the second bending position. The invention mainly aims to provide a bending method and aims to realize secondary bending of a flexible structure.

The utility model discloses a kind of foundation structure and wind turbine generator set of wind turbine generator set, it is related to wind power generation technical field, wherein, foundation structure includes first bearing platform, second bearing platform, multiple bored piles and multiple anchor rods, the top surface of first bearing platform is connected with the connecting cylinder for connecting the tower cylinder of wind turbine generator set;Second bearing platform is set below first bearing platform, the top surface of second bearing platform projects the bottom surface of first bearing platform and forms step surface, the vertical projection of the bottom surface of first bearing platform in second bearing platform forms core area, the edge of second bearing platform forms the expansion area surrounded in core area;Multiple bored piles are distributed in core area with interval, each bored pile extends downward from the bottom surface of second bearing platform, and bored pile is vertically arranged;Multiple anchor rods are distributed in expansion area with interval, and anchor rod extends downward from the bottom surface of second bearing platform and is arranged with inclination.The foundation structure has good bearing capacity and stability, can guarantee the safety and stability of wind turbine generator set in long-term operation process.

The utility model discloses a photovoltaic module junction box anti -loosening fixing device, including junction box, wherein the junction box inside middle position is equipped with the terminal, and the both ends of terminal are equipped with helical spring respectively, wherein helical spring below is equipped with sliding mechanism. The utility model discloses through setting terminal connection fixed wire in the junction box inside middle position, sets up helical spring respectively at the both ends of terminal, effectively reduces the possibility that wire loosens at the junction because of external force and pulls, has reduced the risk of wire drop, has guaranteed the stability of electric quantity delivery, through setting sliding mechanism below helical spring, when wire is subjected to wind power and so on external force and pulls, sliding mechanism drives helical spring telescopic, can effectively buffer the pulling strength of external force to wire, further avoids the loosening of wire and terminal junction because of excessive stress, has strengthened the stability and reliability of whole junction structure.

The utility model discloses a kind of high-strength framework structures of solid wood composite door, including door body, upper frame and lower frame are separately provided on door body, outer frame and inner frame are separately provided on the both sides of door body, rectangular tubular crosspiece is equipped in the middle of outer frame and inner frame, fixed block is equipped in the middle of crosspiece, threaded hole is vertically equipped in the middle of fixed block, main support rod is equipped in threaded hole, a plurality of I wheels are equipped on the main support rod of crosspiece up and down, vice support rod connection inner frame and outer frame are equipped on the both sides of I wheel.The utility model has the beneficial effects that: the high-strength framework structure of solid wood composite door of the utility model utilizes the design of advanced metal and wood combination, guarantees the appearance and firmness of door body, provides excellent compression resistance, corrosion resistance and deformation resistance performance;The utility model improves the strength and stability of door body in compression resistance, bending resistance, tensile resistance and other aspects by optimizing internal support frame, reasonably distributing stress, selecting high-strength material and strengthening connecting part.

The utility model discloses a sliding structure capable of running smoothly, which belongs to the technical field of automobile accessories and comprises a sliding groove, a sliding channel arranged along the length direction of the sliding groove is arranged in the sliding groove, a sliding seat and a screw rod for driving the sliding seat to translate along the sliding channel are arranged in the sliding channel, the top surface of the sliding seat is connected with a cantilever, and the cantilever is connected with the sliding groove. A guide rail is arranged on the inner wall of the sliding groove, a groove is formed in the sliding base, and the guide rail extends into the groove. According to the sliding structure which runs smoothly, the original large cylindrical sliding contact surface is changed into a small-area contact form that the sliding chute is matched with the sliding seat, so that the friction coefficient is greatly reduced.

The invention relates to the technical field of civil engineering, in particular to a steel sheet pile supporting device. The steel sheet pile supporting device comprises a pile plate body, an enclosing purlin assembly and a steel pipe support, and the pile plate body is fixedly connected with the enclosing purlin assembly through a hanging piece; the enclosing purlin assembly comprises a front plate, a rear plate and I-shaped steel, the front plate and the rear plate are connected through at least two sets of first bolts, and the length of the first bolts is larger than the distance between the front plate and the rear plate. The I-shaped steel is inserted between the front plate and the rear plate, and the number of the I-shaped steel is 2-3; the steel pipe support is a steel pipe, the steel pipe support is connected with the front plate, at least two sets of first stiffening ribs are arranged at the end of the side, close to the front plate, of the steel pipe support, and the steel pipe support is in threaded connection with the supporting piece through the first bolt holes. According to the supporting device, the assembling procedure is greatly simplified, the connection between the steel pipe support and the enclosing purlin assembly is firmer and more reliable, the load effect under the full working conditions of supporting tension, pressing and the like can be effectively resisted, and the overall stability and the bearing capacity of the supporting device are further improved.

The utility model relates to a kind of early-dismantling support structures of superimposed floor, belong to the field of construction engineering, it includes vertical support, horizontal support and formwork;The vertical support is set in the gap between adjacent superimposed board both sides and is supported below superimposed board, including lower column, upper column, adjusting nut, backing plate and early-dismantling head, lower column is connected by screw with upper column, adjusting nut is threadedly connected in the top of upper column, backing plate is installed in the top of adjusting nut, early-dismantling head is connected in the top of backing plate, upper column is connected with early-dismantling head and passes through backing plate;The horizontal support includes interval arrangement main ridge and variable cross section main ridge, both ends of main ridge and variable cross section main ridge are all overlapped in the top of backing plate, main ridge is used to support superimposed board, and variable cross section main ridge is used to place formwork.The utility model structure is good in integrity, stress is uniform, and it is convenient and fast to install and dismantle, quality safety is double controllable, with remarkable economic benefits and social benefits.

The utility model discloses a two-way prestress weight reduction assembly type composite floor slab system. The two-way prestress weight reduction assembly type composite floor slab system comprises a pre-tensioning prestress prefabricated concrete bottom plate, weight reduction blocks, cast-in-place concrete ribs and post-tensioning prestress steel bars. Longitudinal prestressed load-bearing steel bars and transverse distribution steel bars are arranged in the pre-tensioned prestressed precast concrete bottom plate. A concrete reinforcing rib or a steel truss reinforcing rib or a steel and concrete combined structure reinforcing rib is arranged on the concrete bottom plate; the weight reducing blocks are laid on the pre-tensioned pre-stressed precast concrete bottom plate, and the weight reducing blocks are spaced by a certain distance. A plurality of pre-tensioned pre-stressed precast concrete bottom plates are assembled together, and concrete ribs are formed after the weight reducing blocks are cast in place. The prestressed steel bars are post-tensioned in the concrete ribs, and after the concrete reaches the strength, the steel bars are tensioned to form post-tensioned prestressing force to form bonded or unbonded prestressing force. According to the utility model, the bidirectional rigidity of the floor system is consistent, the bidirectional force transmission performance and the bidirectional anti-cracking effect are better, the integrity of the floor system is better, and more steel materials are saved.

This invention relates to the field of PCB manufacturing technology, specifically disclosing a PCB drilling method based on differentiated processing of the same hole diameter. The method includes the following steps: acquiring hole position information and integrating measured data from the board surface for condition prediction; assigning virtual tool diameter codes to different hole positions according to the evaluation results and coordinating manufacturability for high-risk hole positions; using codes to drive two-layer parameter decision-making, generating Pareto optimal parameters through multi-objective optimization; during processing, decoupling thermo-mechanical-vibration interaction errors in real time through a multi-source sensor fusion model and generating multi-dimensional compensation instructions; and finally, achieving self-learning directional fine-tuning and iterative closed-loop of processing parameters through the linkage analysis of online hole wall quality assessment and tool life prediction. This invention achieves comprehensive intelligent processing from inter-hole differentiated parameter matching to dynamic precision feedback control within the hole, significantly improving hole wall quality and processing efficiency while effectively reducing overall processing costs, and has good industrial promotion value.

The utility model relates to the technical field of drainage, in particular to a drainage system for a fan platform and a road slope of a mountain wind power plant. The road is connected with a fan platform, an excavation side slope is arranged on the side, close to a mountain, of the road, the excavation side slope is sequentially provided with a plurality of side slope structures from top to bottom in the slope direction of the excavation side slope, and the drainage system comprises a first water retaining ridge arranged on the side, away from the mountain, of the road and arranged in the extending direction of the road; the first drainage ditch is arranged on the side, close to the excavation slope, of the road and used for collecting and conveying water on the excavation slope and the road; the first intercepting ditch is arranged at a riding track between two adjacent side slope structures and is used for collecting water on the side slope structures above the first intercepting ditch; and the drainage pipeline is used for conveying water in the first intercepting ditch to the first drainage ditch. The problems of large-area scouring and water erosion of water flow to the slope surface and the road surface can be effectively solved, the stability of the slope and the roadbed is effectively improved, and a guarantee is provided for long-term stable operation of a mountain wind power plant.

This invention relates to the field of belt conveyor technology and discloses a tubular belt conveyor system, comprising: at least two support sections; a cable assembly connected to the at least two support sections, the cable assembly including multiple cables arranged in parallel; several sets of support rod assemblies spaced apart along the extension direction of the cables, each set of support rod assemblies including multiple support rods connected end-to-end in sequence, each support rod connected between two adjacent cables, and idlers connected to the support rods, the idlers being rotatable relative to the support rods, the idlers on the multiple support rods forming a receiving space; and a conveyor belt extending along the extension direction of the cables and located within the receiving space formed by the idlers. By connecting several support rod assemblies to the cable assembly to form a flexible system to support the conveyor belt, the cables and support rods support each other, resulting in a stable structure, lighter weight, higher cable load-bearing capacity, and stronger spanning capacity of the entire system; directly mounting the idlers on the support rods simplifies assembly, facilitates construction, reduces steel consumption, lightens weight, and reduces the load on the support sections.

The application relates to the technical field of household appliances, and discloses a cleaning brush and a control method thereof. The cleaning brush comprises a main machine, a handle and a machine head. The machine head is connected with the main machine and comprises a water tank and brush hairs. Cleaning medium is arranged in the water tank, and the brush hairs are arranged at the bottom of the water tank. An atomizing water spraying device is arranged at the bottom of the water tank and communicates with the inside of the water tank. The other end of the atomizing water spraying device is provided with a nozzle. The atomizing water spraying device is used for atomizing the cleaning medium and spraying the atomized cleaning medium to a surface to be cleaned and the brush hairs. Compared with the related art, the water tank and the atomizing water spraying device are integrated in the brush head, so that an additional handheld water pipe, a shower for humidification or frequent wetting of the brush hairs is not needed, the cleaning operation process is simplified, and the use convenience is remarkably improved.

This utility model discloses a multi-functional cap for endoscope irrigation water bottles, relating to the field of medical device technology. The cap comprises an interface, a screw-on cap body, and a guide post. The screw-on cap body has a through hole at its center, the interface is located at the external through hole of the cap body, and the guide post is located at the internal through hole of the cap body. The interface surface has external threads, and the inner surface of the cap body has internal threads along the periphery of the guide post. This multi-functional cap for endoscope irrigation water bottles is placed at the mouth of a bottle containing sterile water or other solutions. The interface connects to other external interfaces, including various interfaces with multi-functional tubing. It not only provides a good seal but also is compatible with various caps, making it convenient to use and more suitable for widespread adoption.

According to the positioning unit and the steel rail fastener, the through positioning hole is formed in the middle of the positioning unit, and the elastic unit can be arranged according to the height difference between the positioning unit and the steel rail and the depth of the positioning hole, so that the thickness of the elastic unit can be obviously increased in the limited height between a sleeper and the steel rail; and the rigidity is correspondingly reduced, so that the fastener has better vibration reduction performance. Moreover, when a train passes through a steel rail on the steel rail fastener, the elastic unit plays a role in vertical bearing, and the buckling and pressing unit and the positioning unit play roles in transverse and longitudinal bearing, so that effective separation of vertical bearing and longitudinal and transverse bearing of the steel rail fastener is innovatively realized through the arrangement of the through positioning holes, a force transmission path is optimized, and the reliability of the steel rail fastener is improved. The vertical force basically does not act on the positioning unit, so that the problem that the positioning unit is bent, deformed and even broken due to the fact that the positioning unit frequently bears large vertical force for a long time can be solved, the continuous service life of the fastener is longer, and the reliability is higher.

This utility model relates to a fixing structure for a photovoltaic power station on a concrete flat roof, belonging to the field of photovoltaic power station fixing technology. The photovoltaic power station includes multiple photovoltaic brackets arranged in a straight line at equal intervals. The two mounting ends of the photovoltaic brackets are respectively fixed to two concrete counterweights, which are fixed to the roof. A concrete parapet wall is set on each side of the photovoltaic bracket arrangement direction, and the concrete counterweights are fixed to the roof. The two ends of the fastening cables are respectively fixed to the two concrete parapet walls, and the fastening cables are fixedly connected to all the concrete counterweights. This solves the problem of insufficient load-bearing capacity of the current roof for photovoltaic power stations.

Anchoring rod, including fixed end anchor (1) and tension end backing plate (2), one end of anchor cable body (3) is connected with fixed end anchor (1) and is fixed, it is characterized in that: one or multiple pressure dispersion devices (4) are arranged on the outer circumference of the anchoring section L1 of the anchor cable body (3), the grouting pipe (6) extending to the vicinity of the front end of the anchor cable body (3) is arranged on the tension end backing plate (2), the exhaust overflow port (7) is opened on the tension end backing plate (2), the outer surface of the anchor cable body (3) adopts integral anticorrosion structure, the present application has the advantages of reasonable structure, convenient installation and tension, can accurately adjust the anchoring force of each pressure dispersion device according to geological conditions and stress conditions, has the advantages of small tension shrinkage, small stress loss under anchor and the like, and the full length of the anchor rod has excellent corrosion resistance, can meet the anchoring construction requirements under the conditions of higher anticorrosion requirements such as underwater.

This invention discloses a prefabricated assembled foundation for wind turbine towers, combining a spherical shell and a conical shell, and its construction method. Belonging to the technical field of wind turbine tower foundations, the prefabricated assembled foundation includes: a spherical shell foundation body comprising multiple prefabricated spherical shell components, the spherical shell foundation body having a downwardly convex spherical shell shape; a conical shell foundation body arranged on the upper side of the spherical shell foundation body, the conical shell foundation body having a conical shell shape and comprising multiple prefabricated conical shell components; and a ring beam connecting the conical shell foundation body and the spherical shell foundation body, the ring beam comprising multiple prefabricated beam components, the multiple prefabricated beam components being spliced ​​and connected along the circumference of the spherical shell foundation body. The prefabricated assembled foundation for wind turbine towers based on the spherical shell and conical shell combination of this invention can fully utilize the advantages of thin-shell foundations, such as reasonable stress distribution and material saving. The cavity enclosed by the foundation can be filled with counterweights to improve the foundation's overturning stability. The use of prefabricated components can significantly shorten the on-site construction cycle and ensure the consistency of foundation construction quality.

This invention relates to a locking anchor structure and its construction method, comprising: a receiving component, the receiving component including a first sidewall plane facing the tunnel face, an upper steel frame fixed to one end of the receiving component, and a lower steel frame fixed to the other end; and a first anchor rod, one end of the first anchor rod being fixed to the first sidewall plane, and the other end being used to fix it to the inner sidewall of the tunnel. The first sidewall plane and the first anchor rod can be welded outside the tunnel. Anchor rod holes are opened inside the tunnel to fix the first anchor rod. Subsequently, the upper and lower steel frames are fixed to the receiving component. This receiving component can replace part of the steel frame to form a new surrounding rock support, forming an integral whole with its upper and lower steel frames, resulting in reasonable stress distribution, reliable structure, and stronger bearing capacity. It solves the problems of limited welding space, high operation difficulty, and low welding efficiency of traditional locking anchor rods located between the steel frame and the tunnel face.

The utility model discloses a kind of wire hanging ring structures of inlet-outlet line roof frame, involve engineering design construction technical field.The utility model includes the first positioning mechanism of installing the web of main girder and the second positioning mechanism of installing the upper flange and lower flange of main girder, first through-hole with the axis parallel to the web is structured on the first positioning mechanism, second through-hole perpendicular to the web is structured on the second positioning mechanism, the first positioning mechanism and the second positioning mechanism are respectively structured with first hole reinforcing mechanism and second hole reinforcing mechanism;It has realized to constitute inlet-outlet line roof frame overall structure, meet the optimization of substation construction plane, enhance the structural strength of roof frame, promote the security of building and roof frame overall situation purpose.

The utility model discloses a lattice formula concrete wind power tower column foundation, including a plurality of around wind power tower vertical center line circumferential uniform distribution's foundation structure, the foundation structure includes the foundation main part buried in the foundation and is used for and the wind power tower bottom tower column links the platform column, the platform column is located in the foundation main part, the outer wall of platform column and the inner wall of foundation main part are equipped with a plurality of first connecting plate, and the outer wall between adjacent foundation main part is equipped with the second connecting plate for realizing the connection of adjacent foundation main part. The utility model discloses a lattice formula concrete wind power tower column foundation has the advantages such as light self weight, simple structure, reasonable stress, high anti -pulling bearing capacity, good economy, convenient construction etc.

This application discloses a tilting cylinder capable of precisely controlling the tilting angle, belonging to the field of cylinders. The tilting cylinder includes a cylinder body, a support mounted on the cylinder body, and a tilting seat movably mounted on the support. A locking mechanism is provided on the support, comprising a rotating shaft rotatably inserted into the support via a circular hole and fixedly connected to the tilting seat, a worm gear fixedly mounted on the rotating shaft, a worm rotatably inserted into the support and meshing with the worm gear, and a driving component for driving the worm gear to rotate. Through the meshing transmission of the worm gear and worm, the power of the driving component can be converted into precise angle adjustment of the tilting seat. The high-precision characteristics of the worm gear transmission are utilized to achieve precise control of the tilting angle. Simultaneously, the worm gear transmission has a natural mechanical self-locking characteristic, which allows the tilting seat to be rigidly locked in position through a mechanical structure after adjustment to the target angle, preventing angle deviation due to factors such as air pressure fluctuations and significantly improving the positional stability of the tilting seat.

The utility model discloses a kind of precast pile bearing cantilever type retaining wall, including precast pile main body, retaining board, support base plate, ribbed plate, connecting sleeve, steel plate, anti-drop base plate, anti-drop side plate, connecting plate, longitudinal reinforcement, horizontal steel bar and transverse reinforcement.Through the above structure, the problem that existing retaining wall is easily caused chain reaction by impact is solved, and the structural stability and reliability are improved.Precast pile main body penetrates into foundation, and upper structure and soil load are dispersed to deep stable stratum, to avoid single wall impact leading to overall collapse.Retaining board, ribbed plate and support base plate form cantilever structure, resist lateral pressure of soil body, and each component works cooperatively, improve soil body stability behind wall, reduce soil deformation.Collapse hole and collapse groove inside connecting plate design, so that retaining wall separates connecting plate and anti-drop side plate when impacted, reduce impact on nearby retaining wall.

The present application belongs to the field of civil engineering structure, and the technical scheme is as follows: a space grid structure, comprising a single-layer hollow roof in cross grid shape, a space lattice roof truss and horizontal steel cables; the vertical structure top end is connected with the horizontal steel cables, the horizontal steel cables are closed, and the horizontal steel cables are segmented to form a plurality of segmented points at a certain interval, the segmented points are the first nodes of the structure; the first members of the space lattice roof truss are led from each first node of the structure upward along the oblique direction of the inverted tetrahedron, and the other end of the first member is the second node of the structure, which is also the intersection of the adjacent first members; and the space lattice roof truss is formed by analogy. The adjacent uppermost layer structure nodes are connected by connecting rods to form the single-layer hollow roof. The present application meets the requirements of the space and appearance of the cultural and creative building with exposed structure, and also meets the requirements of reasonable structure stress and convenient construction.

The invention belongs to the technical field of electric power transmission and distribution equipment, and discloses an electric power fitting applied to an overhead line, which comprises a connecting main body, a wire clamping assembly, an insulation connecting assembly and an installation adjusting assembly. The wire clamping assembly is used for clamping and fixing wires of different specifications, the insulation connecting assembly is used for being reliably connected with an insulator, the installation adjusting assembly is used for adjusting the installation height and the stress angle of the hardware fitting, and stable connection of the wires and the insulator is achieved. The connecting body is of an integrally-formed structure and is provided with reinforcing ribs and through holes, so that the structural strength and the installation stability are improved. And each component is made of an anti-corrosion metal material and is coated with an insulating coating, so that good corrosion resistance and electrical safety performance are achieved. The device is reasonable in structure, high in adaptability, convenient to install and suitable for various overhead line working conditions, and the safety and reliability of line operation can be effectively improved.

The utility model discloses a kind of connecting devices of cable net curtain wall, relate to building curtain wall technical field.The connecting device of cable net curtain wall includes connecting assembly and horizontal support component, the connecting assembly includes integrated ear plate cover and split cable clamp, split cable clamp is connected in the outside of integrated ear plate cover, the horizontal support component includes support force rod and pin shaft, and support force rod is connected with integrated ear plate cover by pin shaft.The utility model provides a kind of connecting device of cable net curtain wall, it is convenient to install, can realize batch processing production;Structure is reliable, and stress is reasonable;It can be applied to plane, curved surface, space cable net structure.

The invention belongs to the technical field of port engineering, and particularly relates to a wharf and water intake structure based on a semi-submerged caisson and a pile foundation and a construction method.The structure comprises the semi-submerged caisson, the wharf pile foundation, a wharf upper structure and a water intake head, the bottom of the wharf pile foundation is fixedly connected with the semi-submerged caisson, and the top of the wharf pile foundation is fixedly connected with the wharf upper structure; the semi-submerged caisson, the wharf pile foundation and the wharf superstructure form a whole; the semi-submerged caisson adopts an arrangement mode that water is discharged from a rear-row compartment and is submerged in a front-row compartment, and a water taking head is arranged in a water area of the front-row compartment of the caisson in an embedded mode. A large-range permeable structure is formed below the wharf surface, so that the effects of enlarging the water taking range and reducing the normal speed of water flow at the front edge of the wharf are achieved; the construction method of the structure is simple and convenient, the structure can be applied to a gravity type along-shore wharf needing to be provided with a water intake, efficient and intensive utilization of shoreline resources is achieved, and meanwhile the safety of berthing and unberthing operation of ships at the front edge of the wharf is improved.

The present disclosure relates to a kind of truck box cover mechanism, including truck box, upper cover, jacking mechanism and drive assembly, the top of truck box is provided with opening and crossbeam, two sides of truck box width direction are called first side, second side;Upper cover can be switched between the closed position of covering opening and the open position of being turned to the side outside truck box;Jacking mechanism includes first transmission part, second transmission part and third transmission part, both ends of first transmission part are respectively hinged with upper cover and crossbeam;One end of second transmission part is hinged in the first side of crossbeam, and the other end is equipped with the roller of rolling cooperation with upper cover;Two ends of third transmission part are respectively hinged on first transmission part and second transmission part.Output end of drive assembly is hinged in the second side of crossbeam, and it is hinged with first transmission part.The truck box cover mechanism of the present disclosure, by setting jacking mechanism, and being hinged with drive assembly and upper cover respectively, make upper cover move along predetermined trajectory under the action of drive assembly, improve the reliability of upper cover opening and closing.

The invention relates to a parallel loading wing type large-span cantilever truss structure system and a mounting method thereof, the structure system is formed by connecting a plurality of loading wing type trusses which are arranged along the outer edge of a main body structure in parallel at intervals and unfolding wing type trusses on the outermost side in parallel, and the trusses are connected into a space whole through horizontal connecting components. The wing carrying type truss comprises a vertical bearing part and a horizontal overhanging part which are inclined from inside to outside, a wing carrying structure is formed, and overhanging loads are efficiently and obliquely transmitted to a main body structure. Reinforcing components such as three-fork web members are arranged at the ends of the wing-unfolding type trusses, and the rigidity of the ends is enhanced. The mounting method adopts sequential construction of pushing truss by truss from one end to the other end and synchronously connecting horizontal members. The problems that a traditional solid-web cantilever beam is huge in dead weight, insufficient in rigidity and large in building space occupation are solved, and the large-span solid-web cantilever beam has the advantages of being reasonable in stress, small in steel consumption, large in spanning capacity and wide in building space and is suitable for large-span cantilever buildings such as stadiums and terminal buildings.

The invention provides a closed-loop feedback adjustable diamond cutting tool which comprises a first adjusting unit capable of deflecting and adjusting in an X-Y plane around a Z axis, a second adjusting unit capable of sliding and adjusting is connected above the first adjusting unit, and a sliding surface of the second adjusting unit is parallel to the X-Y plane. The second adjusting unit is connected with a fourth adjusting unit through a third adjusting unit used for Z-direction leveling, the fourth adjusting unit drives the diamond to rotate along the Y axis, and the top face of the fourth adjusting unit is provided with a visual calibration plate for a camera to shoot. The shot visual calibration board judges whether the first adjusting unit and / or the third adjusting unit are / is parallel to the camera or not through the visual analysis system, and if the first adjusting unit and / or the third adjusting unit are / is not parallel, the first adjusting unit and / or the third adjusting unit are / is adjusted. According to the tool, four stages of adjusting mechanisms are integrated, the application range is greatly widened, the machining universality is greatly improved, the positioning precision after diamond clamping is effectively improved, and the section cutting accuracy is improved.