51 results about "High stiffness" patented technology

A stack structure (90), a display module (2), an electronic device (1), an impact-resistant layer and a preparation method, relating to the technical field of display. The stack structure (90) comprises a protective layer (91) and impact-resistant layers. The elastic modulus of each impact-resistant layers is less than the elastic modulus of the protective layer (91), the hardness of each impact-resistant layer is greater than the hardness of the protective layer (91), and / or the rigidity of each impact-resistant layer is greater than the rigidity of the protective layer (91). The protective layer (91) and the impact-resistant layers are connected by bonding or in other manners. Therefore, the compression resistance characteristic of a high-hardness and / or high-rigidity material is combined with the impact resistance characteristic of a high-elastic-modulus material, to improve the reliability of the stack structure (90). The stack structure (90) is directly connected to a display screen (20) by means of an adhesive layer, such that a display surface layer + cover plate structure is not required any more, and the architecture of the electronic device (1) can be simplified.

This invention discloses a method for near-net-shape forming of complex thin-walled irregular-shaped rings based on a dissimilar material cladding, relating to the field of material plastic forming technology. The method includes: determining the required blank material and cross-sectional allowance of the same material for ring rolling forming of the target ring; determining the dissimilar material cladding based on the cross-sectional allowance; the dissimilar material having a higher stiffness than the blank material; fabricating the blank material and the dissimilar material cladding; covering the blank material with the dissimilar material cladding and performing ring rolling to obtain an initial ring; and removing the cladding from the initial ring to obtain the target ring. This invention solves problems such as buckling instability, loss of dimensional accuracy, uneven wall thickness, excessive ellipticity, and large subsequent machining and low material utilization under large allowance design during the rolling process of thin-walled rings. It achieves high-precision near-net-shape forming of large-diameter, thick-walled titanium alloy irregular-shaped rings, improving material utilization and reducing material costs.

This invention relates to a humanoid robot, specifically a parallel rotating mechanical joint based on a ring-shaped guide rail, mimicking the rotation of a human neck. The aim is to provide a parallel rotating mechanical joint based on a ring-shaped guide rail to achieve three degrees of freedom in the movement of a biomimetic human neck joint while ensuring high rigidity and motion accuracy. Furthermore, the joint features a simplified structure, good support performance, and sufficient movement space for the neck joint. The technical solution is a parallel rotating mechanical joint based on a ring-shaped guide rail, characterized by: a head motion platform, a neck ring-shaped guide rail base, and three PSS (Personal Stability Support) link branches connected in parallel between the head motion platform and the neck ring-shaped guide rail base; the center of the head motion platform and the center of the neck ring-shaped guide rail base are connected by a composite rotating shaft.

The present application relates to the technical field of tire overall preparation, and proposes a variable stiffness tire and a tire overall preparation device, which can adapt to various driving conditions and realize the collaborative optimization of comfort and control performance, and the structure can effectively disperse flexural stress, and is not prone to heat accumulation, bulging and cracking, thereby significantly improving high-speed durability and load capacity, and the matching tire overall preparation device can adapt to the molding process of the tire body, effectively improve tire production efficiency and manufacturing precision, and comprises a tire body and a triangular rubber ring, wherein the tire body comprises a tread, a sidewall and an inner tire ring, the sidewall is divided into a shoulder section, a sidewall middle section and a bead section in the radial direction, the stiffness of the bead section, the shoulder section and the sidewall middle section decreases in turn, the sidewall middle section is a main flexible deformation area, the shoulder section provides lateral restraint, the bead section provides high stiffness support, the tread is fixedly connected with the shoulder section, and the inner tire ring is fixedly connected with the triangular rubber ring.

The application discloses a novel human-simulating flexible parallel wrist joint with redundant driving, and has the characteristics that the joint comprises a moving platform (1), an intermediate branch chain (2), a first driving branch chain (3-1), a second driving branch chain (3-2), a third driving branch chain (3-2) and a base (4). The application is based on bionics and bionically designs the bony structure and muscle system of a human wrist joint, adopts a rope driving mode, has a high stiffness bearing ratio, is driven redundantly and has good human-machine interaction performance. The joint can be pulled by three motors through external ropes, converts the rotation of the motors into the movement of the ropes through a movable pulley, realizes 2-DOF (degree of freedom) movement, and is suitable for occasions such as the end wrist joint of an industrial robot, a human-simulating arm wrist joint and an intelligent prosthesis.

The present application relates to a kind of flexible composite curved surface structure and its preparation method, by reasonable forming process, multiple materials are compounded together, give full play to the advantage of component material, make up for each other in performance, form synergistic effect, so that flexible composite curved surface structure has high rigidity, high strength, to meet the use requirement under complex condition, solve the full coverage, full movement process protection requirement, can give consideration to deformation and bearing requirement, suitable for special protection of special-shaped curved surface component, meet the use condition of multiple working conditions, realize the surface protection of full coverage and real-time sticking under multiple movement states, reach the effect of full protection.

This invention relates to the field of sealing component punching technology, specifically a 3D sealing component punching device, including a punching frame and a movable sealing cover. The punching frame is internally equipped with a punching support unit and a punching adjustment unit. This invention uses a limit servo cylinder to push the movable limit frame downwards, causing the upper and lower support frames to form an upper and lower clamping support. At this time, a high-pressure air pump inside the metal frame inflates the rubber airbag. The airbag expands and compresses the internal granular filling layer. Utilizing the phase change effect generated by the dramatic increase in inter-particle friction, the originally loose and flowing granular layer instantly solidifies into a high-rigidity solid. The outer elastic film then tightly adheres to the complex curved surface of the 3D sealing component, solving the technical problem that traditional rigid clamps cannot adapt to irregular curved surfaces and are prone to damaging soft sealing surfaces. It achieves rapid switching from flexible wrapping positioning to rigid locking support, ensuring zero workpiece deformation and uniform distribution of support force at the bottom of the hole during the punching process.

This invention discloses a frame decoupling structure and a MEMS resonant gyroscope incorporating it, belonging to the field of microelectromechanical systems (MEMS) technology. The frame decoupling structure is a centrally symmetric structure, comprising a drive decoupling frame and a detection decoupling frame. The drive decoupling frame is connected to a fixed anchor point via a first elastic support structure with low stiffness in the drive direction and high stiffness in the detection direction, and is connected to a mass block via a second elastic support structure with high stiffness in the drive direction and low stiffness in the detection direction. The detection decoupling frame is connected to the fixed anchor point via a third elastic support structure with low stiffness in the detection direction and high stiffness in the drive direction, and is connected to the mass block via a fourth elastic support structure with high stiffness in the detection direction and low stiffness in the drive direction. This design physically separates the mechanical paths of drive and detection using anisotropic stiffness beams, thereby effectively suppressing orthogonality errors and improving the gyroscope's performance and production yield.

This invention belongs to the field of machine tool transmission technology, and particularly relates to a backlash-free transmission structure for machine tools. The invention provides a backlash-free transmission structure for machine tools, including a gearbox, a transmission wheel assembly, and a backlash-free assembly. The backlash-free assembly includes a composite damping component, a tightening disc, and a damping adjustment component. This invention combines the advantages of elastic backlash elimination and rigid transmission. Within the tooth backlash range, it exhibits low-stiffness elastic backlash elimination, ensuring no rigid hard impact on the tooth surface. Under acceleration / heavy cutting conditions, it exhibits high-stiffness transmission, ensuring the trajectory accuracy and dynamic response of the cutting bed. Simultaneously, it possesses damping energy absorption functionality, effectively solving problems such as response lag and fatigue failure in existing technologies.

[Problem to be solved] To enable the deformation of a front structure in an intended deformation mode to effectively absorb impact energy when a shock load is applied to the front structure of an electric vehicle. [Solution] In the front structure for the electric vehicle, an inner part 21 with varying stiffness is provided on a front part in an inner part of a front longitudinal member 10; in the inner part with varying stiffness 21, several sections with low stiffness 21a and several sections with high stiffness 21b are arranged alternately in a front-rear direction of the vehicle; and on the front longitudinal member 10 behind the inner part with varying stiffness 21, a weak part 25 is provided which has a lower stiffness than the sections with high stiffness 21b.

This invention relates to a vibration isolation device and operating method for a thrust bearing of a submersible under extreme hydrostatic loads, belonging to the technical field of marine propulsion devices. The device consists of two identical semi-circular ring modules assembled into a complete ring. Each module includes a multi-layered stack of semi-circular metal ring plates and clamping bolts. Two rings of bolt holes are circumferentially formed on the metal ring plate stacks, which are rigidly connected to the thrust bearing housing flange and the thrust bearing base flange via hydraulic clamping bolts. The plane of the metal ring plates is perpendicular to the axis of the shaft system. The high stiffness within the metal ring plates provides lateral stability support, while the low stiffness outside the plane provides longitudinal elastic vibration isolation. All metal parts are made of titanium alloy or duplex stainless steel, which is resistant to seawater corrosion and does not exhibit stiffening under deep-sea pressure. The operating method of the device is also disclosed, highlighting its advantages of excellent vibration isolation performance, stable lateral support, high installation accuracy, maintenance-free operation, and good maintainability.

This invention proposes a lightweight loading device and its design method suitable for low-altitude propeller balances, belonging to the technical field of low-altitude aircraft test balances. The aim is to solve the problem that existing loading devices cannot meet the requirements of low-altitude propeller six-component balances with diameters less than 200mm for simulating real-world installation methods, high rigidity, and lightweight calibration. In this invention, the low-altitude propeller balance is horizontally mounted on a raised base via a lower balance connector, and the upper surface of the low-altitude propeller balance is connected to the upper balance connecting plate. The central body is mounted on the outside of the low-altitude propeller balance; the front and rear, and left and right cantilever arms are all mounted on the central body; drag lugs are installed on both sides of the left and right cantilever arms, and normal force and roll moment lugs are installed on the left and right cantilever arms; pitch moment lugs are installed on the front and rear cantilever arms. This invention solves the problem that existing loading devices cannot meet the requirements of low-altitude propeller six-component balances with diameters less than 200mm for simulating real-world installation methods, high rigidity, and lightweight calibration.

The application relates to the technical field of beam structures, in particular to a beam structure which comprises a beam main body and connecting bases, the number of the connecting bases is two, the two connecting bases are symmetrically arranged at two ends of the beam main body, and a butt joint mechanism is arranged between the connecting bases and the beam, the beam main body comprises an outer shell, longitudinal ribs, plate ribs and inclined ribs, the surface of the beam main body is provided with a track structure, the two ends of the inclined ribs are respectively connected with one side of the inner top wall of the outer shell and the inner bottom of one side, the surface of the outer shell is provided with a track and other protruding structures, therefore, the inclined ribs in the beam can realize internal diagonal line connection of the outer shell with the shortest length, the weight of the beam structure is reduced while the strength of the outer shell is improved, and the beam structure can realize minimum weight on the premise of guaranteeing overall strength through the arrangement of the longitudinal ribs, the plate ribs and the reinforcing ribs, so that light weight and high rigidity are considered.

This invention relates to the field of precision machinery technology, and more particularly to a high-rigidity parallel adjustment platform with variable configuration, comprising: a lower platform, an upper platform, N legs, N first sliding components, and N second sliding components. The N legs are arranged at intervals between the upper and lower platforms, and each leg is telescopically connected via a planetary roller screw assembly. Each first sliding component includes a first moving part and a first fixed part, with the first fixed part disposed on the lower platform and the first moving part movable relative to the first fixed part. Each second sliding component includes a second moving part and a second fixed part, with the second fixed part disposed on the upper platform and the second moving part movable relative to the second fixed part. The first end of each leg is connected to the corresponding first moving part via a corresponding first offset hinge, and the second end of each leg is connected to the corresponding second moving part via a corresponding second offset hinge. This invention at least improves the adaptability of the parallel adjustment platform to different usage scenarios.

The application belongs to the technical field of aerospace structure and specifically relates to a bearing structure based on heterogeneous materials and a manufacturing method. The bearing structure based on heterogeneous materials comprises a high modulus base used for mounting a detection system component and a position information measurement system component, and a high damping base sleeved outside the high modulus base and used for being connected with a spacecraft. The high damping base is connected with the high modulus base through a physical interlocking structure, and an area where the physical interlocking structure is located is defined as a transition area. In the transition area, the high damping base and the high modulus base are nested with each other. The application breaks the performance limitation of a single material through combined application of heterogeneous materials, realizes multifunctional integration of light weight, high stiffness, high vibration suppression and the like, and obtains a light high modulus heterogeneous material high stability structure.

Systems and methods for deploying adjacent trailing edge flaps that are part of different flap assemblies of different stiffnesses are disclosed. An exemplary method comprises: deploying a first flap of a first flap assembly having a first stiffness by a first deployment amount and deploying a second flap adjacent the first flap by a second deployment amount where the deployment amount of the first flap part of the flap assembly of lower stiffness is greater than the second deployment amount of the second flap part of the flap assembly of higher stiffness. The difference in deployment amounts may be adapted to improve continuity between the first flap and the second flap when the first and second flaps are deployed and subjected to an aerodynamic load.

This invention relates to the field of mechanical manufacturing. The objective is to provide a parallel machining equipment with dual moving platforms capable of heavy-duty milling. This equipment features high rigidity, high load capacity, and high precision, addressing the problems of insufficient rigidity, load capacity, and precision in traditional machining environments. The technical solution is a parallel machining equipment with dual moving platforms capable of heavy-duty milling; characterized in that: the combined moving platform includes a first moving platform and a second moving platform connected by an adapter; the adapter is a rectangular cylinder with through slots on all four sides, one end of which is horizontally hinged to the first moving platform, and the other end is fixedly connected to the second moving platform; of the four branches: the first and third branches each include a third revolute joint, an RPR prismatic joint, and a first revolute joint sequentially connected between the fixed platform and the first moving platform; the second and fourth branches each include a Hooke's joint, a UPR prismatic joint, and a second revolute joint sequentially connected between the fixed platform and the second moving platform.

This invention belongs to the field of material handling equipment technology, specifically relating to an automated guided vehicle (AGV) for automated loading and unloading with buffering. It includes a vehicle body, a lifting platform, a floating docking platform, a deviation detection unit, a controllable buffer unit, a clamping unit with elastic clamping pads, and a controller. The floating docking platform has a horizontal floating margin, and the controllable buffer unit can switch between high and low stiffness. The controller provides graded control based on the detected comprehensive deviation: when the deviation is less than a first threshold, the buffer unit operates at high stiffness, outputting a first clamping force, corresponding to static friction greater than the maximum inertial force during normal travel; when the comprehensive deviation is greater than or equal to the first threshold, the buffer switches to low stiffness, outputting a second clamping force, corresponding to static friction less than the sliding trigger inertial force. This invention, by switching the controllable buffer unit from a high-stiffness state to a low-stiffness state under large deviation conditions, allows impact energy to dissipate over a longer buffering stroke, avoiding the defect of excessively high impact peaks caused by rigid buffering.

The utility model relates to the field of assembly type steel - fiber reinforced concrete composite board discloses a light and thin assembly type steel - acrylic plate - fiber reinforced concrete composite board, it includes: the bottom plate, middle layer and fiber reinforced concrete panel are connected as a whole through the bolt nail from bottom to top, the bottom plate is steel bottom plate, the middle layer includes the acrylic plate that is equipped with the hole, the fiber reinforced concrete panel is formed by steel bar and fiber reinforced concrete pouring, the bolt nail one end passes through the hole of acrylic plate and is connected with the bottom plate, the bolt nail other end is anchored in the fiber reinforced concrete panel, the bolt nail equal interval is arranged transversely, longitudinally, the bolt nail is equipped with the screw thread along its length direction, is equipped with the screw hole that matches with the bolt nail on the bottom plate. The scheme is through increasing acrylic plate as middle layer and dispersing most strain energy, reduces permanent deformation caused by stress concentration, reduces the thickness of bridge deck slab surface, reduces the overall weight of bridge deck slab, keeps higher stiffness and carrying capacity simultaneously, facilitates quick construction installation.

This invention discloses a design method for a high-stiffness, high-strength three-dimensional lattice structure: A truss lattice structure is established using 3D modeling software as the initial lattice structure; the unit cells of the lattice model are mirrored and combined to obtain usable novel unit cells; these novel unit cells are then arrayed to obtain a novel lattice structure. This invention yields a structure with performance superior to most traditional truss lattices, which can be effectively applied to the lightweight design of high-stiffness, high-strength structures.

The application provides a curved track bed, which comprises a curved plate body, a plurality of track bottom pads and a plurality of vibration isolators embedded in the curved plate body. Since the curved plate body is placed on the base through the vibration isolators containing elastic elements, a floating plate form is formed, the rigid connection between the track structure and the base structure is cut off, and the track bottom pads are further arranged, so that the impact energy during train running can be absorbed through the plurality of elastic elements and the track bottom pads, and the track vibration reduction and noise reduction effect at the turning track can be realized. Further, the elastic element arranged on the outer strand of the track has relatively lower rigidity, and the track bottom pad has a variable rigidity design, one side of which with higher rigidity faces the outer side of the track. Therefore, the curved track bed of the application has a targeted design, which can not only reduce vibration and noise, but also correct the deviation of the curved steel rail, better balance the stress conditions of the wheels on both sides of the train when passing the curve, thereby improving the curve passing efficiency, and improving the service life, safety and reliability of the related facilities.

Roll-dispensed stock containers are provided. The roll-dispensed stock containers can include a recessed cutting track positioned along a length of a support wall of the container. The support wall can also include one or more apertures positioned adjacent to the recessed cutting track configured to receive a base of a slidable cutter movable along an elongated slot in a lid of the container. The base of the slidable cutter is captured by the recessed cutting track during a cutting operation to secure the lid in a closed position and to apply constant pressure against roll-dispensed stock as it is cut. Roll-dispensed stock containers of the present disclosure can also include a coating on one or more surfaces thereof. The coating can be formed from a material selected to reduce surface friction, increase rigidity, disperse forces associated with a cutter, and / or otherwise enhance characteristics of the container.

This invention proposes a high aspect ratio, high stiffness composite shaft tube and its design method, belonging to the field of mechanical structure design and manufacturing. It includes a core tube, a damping layer, a cladding layer, a first functional layer, and a second functional layer. Several core tubes are spaced apart along the axial direction of the shaft tube and spliced ​​end-to-end. The damping layer is filled between the ends of adjacent core tubes. The cladding layer is fitted over a continuous structure. Either the first or second functional layer is fitted over the cladding layer, or the first and second functional layers are sequentially fitted over the cladding layer from the inside out. The first and second functional layers respectively meet the impact load and wear resistance requirements of the shaft tube. This invention combines a high-modulus ceramic core tube with a low-density, high-specific-stiffness carbon fiber composite cladding layer, effectively resolving the contradiction between static stiffness and self-weight. Furthermore, it introduces a multi-level interface formed by segmented core tubes and damping layers, which, in conjunction with the inherent interlayer damping of carbon fiber composite materials, effectively buffers impact loads.

This invention discloses a variable stiffness structure with high stiffness and bendability on one side, comprising a flexible substrate, protrusions on one side of the flexible substrate, and filler blocks into which the protrusions can be embedded. The protrusions are arranged in a periodic array, with gaps between adjacent protrusions matching the size of the filler blocks. The filler blocks engage with the gaps via sliding joints, and the switching of the stiffness on both sides of the structure is achieved by inserting and removing the filler blocks. An array expansion mechanism can increase the number of filler block arrays along corresponding directions to achieve large-area / large-scale array splicing of the structure. In the fully embedded state, an interference fit structure relatively locks the positions of the filler blocks and the substrate protrusions, fixing one side of the structure in a high-stiffness stable state. This invention has a reasonable structure, reliable switching, high stiffness on one side and low stiffness on the other, a large load-bearing area, and can adapt to various topological configurations such as squares, triangles, and circles.

The application discloses a single-degree-of-freedom planar two-dimensional deployable basic unit and a large-scale deployable device. The deployable basic unit is a symmetrical quadrangular prism multi-closed-loop mechanism, which comprises two platforms arranged in parallel, and a driving branch chain connected between the two platforms; a set of planar linkage mechanisms are arranged on end faces of the two platforms respectively, and a set of connecting mechanisms are arranged on four opposite sides of the two platforms respectively; the driving branch chain is located on a central axis of the deployable basic unit, and the driving branch chain has a cylindrical pair; the planar linkage mechanism has four identical planar links, one end of each planar link is hinged to the platform, and the four planar links are located in the plane of the platform; and the connecting mechanism is connected with two adjacent planar links in the two planar linkage mechanisms respectively. The application has good symmetry, and has many advantages such as high rigidity, light weight, high structural reliability, single-degree-of-freedom and simple driving system.

This invention discloses a stage transition control method for a prefabricated stiffened brace conversion reinforcement system. The method includes establishing an original support system model, dividing the construction into stages, identifying the impact zone of openings, generating candidate prefabricated stiffened brace schemes, calculating the stage transition safety factor, and optimizing the candidate schemes. By replacing multiple ordinary supports that need to be removed within the opening area with a small number of high-bearing-capacity, high-rigidity, and prefabricable stiffened supports, and combining a stage transition safety factor determination method and a minimum replacement support set optimization algorithm, the method achieves a safe transition of the underground structure from a conventional foundation pit support state to a deep and large opening construction state, and then to a complete basement structure state. This solves the problems of insufficient bearing capacity of ordinary steel supports, large space occupation and difficult removal of large-section concrete supports, lack of quantitative criteria for support conversion in deep and large opening areas, and difficulty in balancing construction space and support safety in existing underground structure connection construction.

This invention relates to the field of prestressed concrete structures and discloses a composite core-column slab and its stiffness control method. The core-column slab includes a UHPC slab, longitudinal solid central ribs arranged along the span, and several core columns. High-strength unbonded prestressed CFRP (fiberglass reinforced polymer) reinforcements are arranged in pre-drilled channels within the central ribs. The CFRP reinforcements are arranged parabolically within the span and eccentrically relative to the bottom of the slab, so that prestress is generated at the bottom of the slab after tensioning. Guides are installed at the core column positions. The prestressed tendons bend as they pass through the guides, and the lateral force at the bend is transferred to the core column by the guides, thereby significantly improving the shear force transfer capacity and overall stiffness of the slab-column joint and within the slab span. Furthermore, this invention establishes a prestressing tension calculation formula based on the functional relationship between span-to-height ratio and stiffness, implementing stiffness compensation for different spans, and realizing a lightweight, high-stiffness, and durable integrated design for large-span modular building floor slabs.

This invention provides a tungsten lattice framework-reinforced nickel-titanium alloy and its preparation method. The tungsten lattice framework-reinforced nickel-titanium alloy comprises a tungsten lattice framework and a nickel-titanium alloy; the tungsten lattice framework has pores, and the nickel-titanium alloy fills the pores of the tungsten lattice framework; the crystal structure of the tungsten lattice framework is a body-centered cubic structure; the body-centered cubic structure is composed of lattice rods with a diameter of 0.675~1.027 mm. This invention constructs a body-centered cubic tungsten lattice framework and forms a three-dimensional interpenetrating metallurgical composite structure with the nickel-titanium alloy matrix, limiting the high stiffness and high load-bearing capacity of the tungsten lattice framework, providing stable mechanical support for the composite material. This structural design can improve the alloy strength while retaining the high damping characteristics of the nickel-titanium alloy, thereby effectively overcoming the inherent contradiction of difficulty in balancing high strength and high damping performance in traditional materials, and significantly improving the overall structural reliability and functional stability.

The application provides a lightweight loading device suitable for a low-altitude propeller balance and a design method thereof, and belongs to the technical field of low-altitude aircraft test balance. The purpose is to solve the problem that the existing loading device cannot meet the requirements of simulating real installation mode, high stiffness and lightweight calibration of a low-altitude propeller six-component balance with a diameter of less than 200 mm. In the application, the low-altitude propeller balance is horizontally installed on a raised base through a balance lower connecting piece, and the upper surface of the low-altitude propeller balance is connected with a balance upper connecting plate; a center body is installed on the outer side of the low-altitude propeller balance; front and rear cantilevers and left and right cantilevers are all installed on the center body; resistance lifting lugs are installed on the two sides of the left and right cantilevers; the left and right cantilevers are provided with normal force lifting rings and rolling moment lifting rings; and the front and rear cantilevers are provided with pitching moment lifting rings. The application solves the problem that the existing loading device cannot meet the requirements of simulating real installation mode, high stiffness and lightweight calibration of a low-altitude propeller six-component balance with a diameter of less than 200 mm.