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122 results about "Adjustable stiffness" patented technology
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Rigidity and energy dissipation adjustable composite energy dissipation bearing device
PendingCN121915859AProtective buildings/sheltersShock proofingStress concentrationAdjustable stiffness
The invention relates to the technical field of constructional engineering equipment, in particular to a rigidity and energy dissipation adjustable composite energy dissipation bearing device which comprises a first connecting plate, a second connecting plate, a first damping part and a second damping part. The first damping piece is arranged on the first connecting plate on the column body in a friction sliding mode, and the second damping piece is connected between the beam body and the first damping piece in an included angle mode, so that the flexural rigidity of the beam-column joint can be effectively improved under the action of frequent earthquakes, and the initial rigidity and lateral displacement resistance of the structure are enhanced; the rigid response performance of the structure under the action of small earthquakes is improved; the second damping piece can adjust the energy dissipation path through the change of the included angle between the length direction of the second damping piece and the axis of the column body in the earthquake action process, the friction sliding mechanism of the first damping piece is matched, the energy dissipation capacity of the joint under the earthquake action is effectively improved, and therefore structural stress concentration is reduced, and structural damage is delayed. The structure is light in weight, convenient to install and wide in application range.
Owner:CHINA CONSTR SCI & IND CORP LTD +1
Elastic ring type squeeze film damper with adjustable rigidity and damping based on memory alloy
The invention discloses an elastic ring type squeeze oil film damper with adjustable rigidity and damping based on memory alloy, belongs to the technical field of vibration control of rotary machinery, and aims to solve the problems that a traditional damper is fixed in structural parameter and poor in adaptability, and the rigidity and damping cannot be adjusted according to the running state, the elastic ring type squeeze oil film damper comprises an outer ring, an inner ring, an oil supply shell and a mouse cage, a memory alloy ring is arranged between the outer ring and the inner ring, a first oil film is formed between the inner ring and the mouse cage, a second oil film is formed between the inner ring and the memory alloy ring, a third oil film is formed between the memory alloy ring and the outer ring, a fourth oil film is formed between the outer ring and the oil supply shell, and a heating structure is arranged on the memory alloy ring. And the temperature of the memory alloy ring is controlled through the heating structure, so that the rigidity of the memory alloy ring and the oil film forms of the second oil film and the third oil film are changed. The damping device is mainly used as a damping device of high-speed rotating equipment which needs to accurately control vibration and rigidity.
Owner:HARBIN INST OF TECH +1
Hardness-adjustable spring structure and spring bag
PendingCN121080775AStuffed mattressesSprings/dampers functional characteristicsAdjustable stiffnessMechanical engineering
The invention provides a hardness-adjustable spring structure which comprises a spring, an adjusting part and a wrapping part, the wrapping part is used for packaging the spring, and the adjusting part is used for adjusting the pre-tightening force of the spring; the adjusting piece is arranged at one end of the spring and extrudes the end of the spring; the adjusting piece comprises a rotating piece, a moving piece and a supporting piece, the moving piece is movably installed on the supporting piece, and the rotating piece is in linkage connection with the supporting piece; the rotating piece is rotated to drive the supporting piece to rotate, and the moving piece moves up and down along the supporting piece under the rotation of the supporting piece and extrudes the spring; the spring structure solves the problems that according to an existing spring structure, the pre-tightening force of a spring cannot be adjusted at will, the hardness cannot be adjusted during use, and the function is single.
Owner:NEW TEC INTEGRATION (XIAMEN) CO LTD
Rigidity-adjustable underground structure beam column replaceable joint and mounting method
PendingCN120556516AArtificial islandsProtective buildings/sheltersConcrete beamsAdjustable stiffness
The invention discloses a rigidity-adjustable underground structure beam column replaceable joint and an installation method, and belongs to the technical field of reinforced concrete structures. An I-shaped steel beam and disc spring energy dissipation components are arranged on a concrete column, and the disc spring energy dissipation components are arranged on the two sides of the I-shaped steel beam; the I-shaped steel beam and the disc spring energy dissipation component are connected with the arc-shaped steel plates on the two sides, the arc-shaped steel plates are connected with the connecting steel plate through the multiple prefabricated energy dissipation rods and assemblies thereof, and the connecting steel plate is arranged on the side, facing the concrete column, of the concrete beam. The disc spring energy dissipation component rotates relative to the concrete column, the threaded steel sleeve slides up and down in the arc-shaped groove of the arc-shaped steel plate to generate relative angular displacement to extrude or stretch the disc spring to achieve energy dissipation and shock absorption, the adjusting range is large, and damage is not prone to occurring; axial rigidity is provided through the concrete beam and the I-shaped steel beam, and axial tension and compression energy dissipation is provided through the prefabricated energy dissipation rods and assemblies thereof. Rotation energy consumption and horizontal energy consumption are connected and are independent of each other, and when the beam columns rotate relatively, horizontal energy consumption assemblies cannot be damaged.
Owner:SHANDONG JIANZHU UNIV
A steel pipe stacking, bundling and transporting device with adjustable stiffness and damping
The present invention discloses a working method of a steel pipe stacking, bundling and conveying device with adjustable stiffness and damping, comprising: a ground rail, a conveying mechanism, a coding mechanism and a bundling mechanism; the ground rail is installed on a ground foundation through anchor bolts; the conveying mechanism is installed in a longitudinal track groove of the ground rail; the coding mechanism is installed on the ground foundation through anchor bolts; the bundling mechanism is installed in a transverse track groove of the ground rail; the coding mechanism stacks the steel pipes in a blanking chute of the conveying mechanism, and then the bundling mechanism moves left to a working position, and the conveying mechanism moves forward and backward to respectively send the two ends of the stacked steel pipes into two front and rear bundling machines for bundling; after bundling is completed, the bundling mechanism moves right to reset, and the conveying mechanism advances in the track groove of the ground rail to transport the bundled steel pipes to a designated position.
Owner:JIANGSU BAIZE SUPPLY CHAIN MANAGEMENT CO LTD
Passive-active adjustable stiffness heave compensation system based on underwater electro-hydraulic actuators
ActiveCN121206042BFluid-pressure actuator safetyFluid-pressure actuator testingMarine engineeringAdjustable stiffness
The application discloses a kind of active and passive adjustable stiffness heave compensation systems based on underwater electro-hydraulic actuator, including motion sensing control system, passive compensation hydraulic module, electro-hydraulic actuator active compensation hydraulic module, electro-hydraulic actuator rigidity module, sensor module.The application absorbs and releases energy by passive compensation hydraulic module under low frequency / large heave, maintains stable load, and the residual displacement after passive chain compensation is corrected in real time by electro-hydraulic actuator active compensation hydraulic module, and the compensation stiffness is set before operation or gap by electro-hydraulic actuator rigidity module, so that the system can obtain better dynamic performance and energy efficiency under different sea conditions.
Owner:ZHEJIANG UNIV
An electromagnetic quasi-zero stiffness vibration isolation device with adjustable stiffness
This invention provides an electromagnetic quasi-zero stiffness vibration isolation device with adjustable stiffness. It utilizes an electromagnetic coil to provide variable nonlinear negative stiffness, achieving quasi-zero stiffness characteristics. The invention includes a lower housing of a support, a lower end cover, a lower coil, a lower annular permanent magnet, a top block, an upper coil, an upper housing of the support, an upper end cover, a guide rod, an upper outer spring, an upper housing of the permanent magnet, an upper inner spring, an upper permanent magnet, an intermediate permanent magnet, a lower housing of the permanent magnet, a lower inner spring, and a lower outer spring. The permanent magnet and the electromagnetic coil provide variable nonlinear negative stiffness, achieving variable quasi-zero stiffness characteristics. This invention is particularly suitable for applications requiring isolation of wide-frequency excitations, including low-frequency ones.
Owner:FUZHOU UNIV
Rigidity-adjustable tensegrity floating type photovoltaic system based on air bag type pressure regulation and control method
PendingCN121990123AAdjustable structural stiffnessSuitable for long-term servicePhotovoltaic supportsPhotovoltaic energy generationAdjustable stiffnessNew energy
The invention belongs to the field of offshore new energy and space structure engineering, and particularly discloses a rigidity-adjustable tension integral floating type photovoltaic system based on air bag type pressure regulation and a control method, the photovoltaic system comprises a tension bearing structure, and the tension bearing structure comprises a plurality of hinge rod assemblies and cable components connected with the hinge rod assemblies; the floating body is arranged at the bottom of the tension bearing structure; the photovoltaic module suspension unit is matched with the tension bearing structure and is used for bearing a photovoltaic module; the air bag type constant-tension assembly is connected with the cable component and comprises an air bag, and the tension level of the cable component can be changed by adjusting the internal pressure of the air bag, so that the equivalent stiffness of the hinge rod assembly is adjusted. According to the invention, the equivalent stiffness of the whole structure can be adjusted, so that the adaptability of the floating photovoltaic structure to the marine environment load and the structural safety are improved.
Owner:NINGBO ORIENTAL UNIVERSITY OF TECHNOLOGY
Vibration isolation pad with adjustable rigidity
The utility model discloses a vibration isolator with adjustable rigidity, which relates to the field of vibration isolators and comprises a main support column, an outer mounting ring is horizontally welded on the outer side edge of the main support column, fixing through holes are uniformly formed in the top surface of the outer mounting ring, and a discharge side groove is horizontally formed in the outer side edge of the main support column. A placing channel is vertically formed in the top end of the main supporting column, a sealing cover plate is fixedly connected to the inner side edge of the placing channel through a horizontal bolt, a rotating top block is clamped to the top end of the main supporting column, a penetrating channel is horizontally formed in the outer side edge of the main supporting column, and a rotating disc is horizontally clamped to the inner side edge of the penetrating channel. Clamping through grooves are symmetrically formed in the top face of the rotating disc, main shock insulation pads are horizontally connected to the inner side edges of the clamping through grooves in a clamped mode, a modular replacement structure is adopted, so that the device is more convenient to adjust and replace, and meanwhile, the existing replacement and connection requirements are met through rotating type replacement operation.
Owner:YUNNAN TUMBLER SEISMIC REDUCTION & ISOLATION TECHNOLOGY SERVICE CO LTD
Sole with adjustable rigidity and shoe
The utility model discloses a sole with adjustable rigidity, which comprises an outsole and a midsole which are sequentially arranged from top to bottom, the outsole and the midsole are bonded together, the upper end of the midsole is provided with an embedding groove, an insole is embedded in the embedding groove, the bottom of the insole is bonded with a rigid support plate, and the rigid support plate is connected with the outsole and the midsole. The insole is provided with an embedded groove, the rigid supporting plate is arranged between the embedded groove and the insole, the Shore hardness C of the insole ranges from 38 degrees to 45 degrees, the thickness of the insole ranges from 10 mm to 30 mm, the thickness of the rigid supporting plate ranges from 0.6 mm to 1.5 mm, the Shore hardness C of the insole ranges from 38 degrees to 45 degrees, and the thickness of the insole ranges from 10 mm to 20 mm. The depth of the embedded groove is equal to the sum of the thickness of the insole and the thickness of the rigid supporting plate, and the shape and the size of the embedded groove are matched with the shape and the size of the insole respectively. According to the shoe sole with the adjustable rigidity and the shoe, the overall longitudinal rigidity of the shoe sole is adjusted to adapt to different crowds and exercise types, so that the shoe sole has better cushioning performance and exercise performance.
Owner:361 DEGREES (CHINA) CO LTD +2
A robot polishing and finishing terminal three-degree-of-freedom series-parallel hybrid electromagnetic variable stiffness actuator
The application belongs to the technical field of mechanical transmission devices, and discloses a robot polishing and grinding terminal three-degree-of-freedom series-parallel hybrid electromagnetic variable stiffness actuator, which is a series-parallel hybrid variable stiffness structure, a single-degree-of-freedom electromagnetic direct-drive variable stiffness module, a two-degree-of-freedom parallel electromagnetic direct-drive variable stiffness module, and a carefully designed structural member and peripheral sensor system. The application realizes three-degree-of-freedom stiffness independent adjustment and driving force decoupling control. Through the series-parallel hybrid variable stiffness structure design, the Z-direction unit and the X-Y plane parallel system are separated in the structure level, and through the parallel configuration of the electromagnetic spring unit and the voice coil direct-drive motor unit, the equivalent stiffness adjustment and the active driving force output in each direction are independent of each other, so that the stiffness coupling problem in the traditional parallel mechanism is avoided, and the continuous adjustable stiffness and high-precision force control output in the three-degree-of-freedom directions are realized.
Owner:HUAZHONG UNIV OF SCI & TECH
An integrated variable stiffness grading variable-diameter anchor cable system and method
An integrated, graded, adjustable stiffness variable-diameter anchor cable system and method belongs to the field of mining and underground engineering support technology. The system comprises a hollow anchor cable body consisting of a first equal-diameter section, a variable-diameter section, a second equal-diameter section, and an exposed tensioning section, arranged from left to right. The diameter of the variable-diameter section gradually decreases from the large-diameter end to the small-diameter end in a continuous manner, with its large and small-diameter ends coaxially connected to the first and second equal-diameter sections, respectively. A grout outlet is provided on the right side of the variable-diameter section. A grout stop plug is fitted onto the left end of the second equal-diameter section. A sliding tray is fitted onto the outside of the exposed tensioning section. A locking device is fitted onto the outside of the exposed tensioning section and located on the right side of the tray. Resin anchoring agent is bonded to the outside of the first equal-diameter section. The method includes: drilling and anchoring; anchor cable installation and initial pre-tightening; surrounding rock deformation monitoring and stiffness requirement decision-making; controllable grouting based on stiffness adaptation; and stable support based on graded stiffness. This invention enables graded adjustment of support stiffness according to the stage of surrounding rock deformation.
Owner:CHINA UNIV OF MINING & TECH
Control method and control system for hydraulic suspension with stepless, rapid and real-time adjustable rigidity
The invention discloses a hydraulic suspension control method and control system with stepless, rapid and real-time adjustable rigidity, the suspension system receives vehicle information in real time and adjusts the rigidity of a suspension according to the received information, including adjusting the rigidity of the suspension according to the received vehicle roll / pitch angle information or roll / pitch angular velocity information or vertical acceleration information, and adjusting the rigidity of the suspension according to the received vehicle roll / pitch angle information or roll / pitch angular velocity information or vertical acceleration information. According to the received information and the action areas of the rodless cavity and the rod cavity of the shock absorber, the pressure variation required by the rod cavity and the rodless cavity of the shock absorber and the target pressure value of the required rigidity are solved; according to the target pressure value and the pressure variation, the oil pressure of the rod cavity and the oil pressure of the rodless cavity are rapidly adjusted to the target value by controlling the power of a control motor of the oil way and / or the opening degree of a valve, and the rigidity of the suspension is rapidly adjusted to the required rigidity value. According to the method, the oil supply pressure in the shock absorber is adjusted in real time according to the target value and the actual value of the pressure of the shock absorber, so that the pressure value in the shock absorber reaches the required value, and the real-time rapid stepless adjustment of the rigidity is realized.
Owner:SINTRONIC TECH (SUZHOU) CO LTD
An adhesive robot capable of stable compliant landing
The application discloses an adhering robot capable of stable and compliant landing, comprising a fuselage, a plurality of three-degree-of-freedom single legs arranged on the bottom side of the fuselage, an adhering foot sole arranged at the end of the three-degree-of-freedom single leg, and a single leg sub-controller, a main controller and a power battery arranged on the fuselage respectively, the three-degree-of-freedom single leg corresponding to the adhering foot sole and the single leg sub-controller one by one; the power battery is electrically connected with the three-degree-of-freedom single leg, the adhering foot sole, the single leg sub-controller and the main controller respectively; the single leg sub-controller is communicatively connected with the main controller and the corresponding three-degree-of-freedom single leg respectively; the single leg sub-controller makes the three-degree-of-freedom single leg and the adhering foot sole move according to the instruction of the main controller, so as to realize the walking and buffer landing of the robot. The adhering foot sole is used as a primary buffer mechanism, and the three-degree-of-freedom single leg is used as a secondary buffer mechanism with adjustable stiffness and damping, the adhering foot sole and the three-degree-of-freedom single leg jointly work to improve the success rate and stability of the robot and the target spacecraft adhesion, and effectively reduce the disturbance to the target spacecraft.
Owner:SICHUAN UNIV
A horizontal vibration isolation device with adjustable stiffness
This invention discloses a horizontal vibration isolation device with adjustable stiffness, comprising: a base plate; a middle plate, which is horizontally positioned above the base plate and forms a first vibration isolation layer with the base plate; an upper plate, which is horizontally positioned above the middle plate and forms a second vibration isolation layer with the middle plate; sliding tracks, a first set of sliding tracks symmetrically arranged on the left and right sides of the first vibration isolation layer, the upper and lower ends of the first set of sliding tracks being connected to the middle plate and the base plate respectively, a second set of sliding tracks symmetrically arranged on the front and rear sides of the second vibration isolation layer, the upper and lower ends of the second set of sliding tracks being fixedly connected to the upper plate and the middle plate respectively; spring fixing members, two sets of spring fixing members symmetrically arranged on the left and right sides of the upper surface of the base plate, and two sets of spring fixing members symmetrically arranged on the front and rear sides of the upper surface of the middle plate; and two spring connecting members, one of which is fixed to the middle plate and the other is fixed to the upper plate, with a supporting spring connecting each spring connecting member to each spring fixing member.
Owner:CHINA AVIATION PLANNING AND DESIGN INSTITUTE (GROUP) CO LTD
Rigidity-adjustable composite air spring
The utility model relates to a rigidity-adjustable composite air spring, which belongs to the technical field of air springs, and comprises a sealing ring, a sealing bearing, an anti-collision rubber pad, an upper electrified coil, a support piston rod, a cylinder barrel, an annular permanent magnet, a locking nut, a lower electrified coil and a membrane type air spring, and the annular permanent magnet is mounted at the support piston rod through the locking nut. According to the air spring, the characteristic that the rigidity of the electromagnetic spring can be changed to be positive and negative is utilized, so that the total rigidity of the air spring which is connected in parallel is reduced to be nearly zero under low frequency and small displacement, the effect of filtering low frequency vibration is achieved, the total rigidity is further improved under large displacement, the effect of improving the bearing capacity is achieved, and the service life of the air spring is prolonged. And compared with an existing electromagnetic composite air spring, the movable magnet does not penetrate through the interior of the static magnet, it is guaranteed that the size of the movable magnet can be as large as possible, and therefore the rigidity of the electromagnetic spring has a larger adjusting range.
Owner:XIAN HANSIKOTE AIR SUSPENSION SYSTEM CO LTD
Single-degree-of-freedom composite driving adjustable stiffness micro-motion platform
This invention discloses a single-degree-of-freedom composite-driven adjustable stiffness micro-motion platform, relating to the field of precision motion platform technology. It can achieve real-time stiffness adjustment while ensuring precise micro-motion. The specific solution is as follows: A single-degree-of-freedom composite-driven adjustable stiffness micro-motion platform includes a flexible micro-motion platform with a stage at its center. A composite parallel guide flexible component is provided on the first opposite side of the stage. A piezoelectric ceramic actuator is installed on one side of the second opposite side of the stage. A normal stress electromagnetic adjustable stiffness actuator is installed on the second opposite side of the stage and is positioned opposite to the piezoelectric ceramic actuator. It includes a T-shaped stator core, with an excitation coil on the winding square column in the middle of the T-shaped stator core. L-shaped stator cores are provided on both sides of the excitation coil. The first end of the L-shaped stator core is connected to the T-shaped stator core, and an air gap is provided between the second end and the armature. The normal stress electromagnetic adjustable stiffness actuator is connected to the flexible micro-motion platform through the armature. External leads are connected to the excitation coil to adjust the stiffness.
Owner:SHANDONG UNIV
Segmented stiffness adjustable shape memory alloy driven actuator and control method thereof
ActiveCN122008171BProgramme-controlled manipulatorMachines/enginesAdjustable stiffnessShape-memory alloy
This invention belongs to the field of intelligent actuators and flexible actuators, and relates to a segmented shape memory alloy driven actuator with adjustable stiffness and its control method. The actuator includes a flexible shell, an isolation element, a shape memory alloy driving element, and a phase change stiffness control material. The isolation element divides the flexible shell into multiple axially arranged cavity structures. The phase change stiffness control material fills each cavity, and the phase change temperatures are not completely identical. Each temperature parameter and driving force satisfies a preset matching relationship. The control method involves controlling the heating temperature of the shape memory alloy driving element to sequentially unlock the equivalent stiffness of the cavities through phase changes of the phase change stiffness control material. This allows for multi-segment controllable equivalent stiffness adjustment under a single driving source. The actuator of this invention has a simple structure and programmable response, making it suitable for soft robots, deformable support structures, and intelligent execution systems.
Owner:DONGHUA UNIV +1
A helical spring suspension with adjustable stiffness variation
The application relates to a stiffness-adjustable and transformable helical spring suspension, and relates to the technical field of vehicle machinery, which comprises two suspension devices arranged on the two sides of a vehicle body and connected with wheel shafts on the two sides of the vehicle body and a connecting mechanism for connecting the two suspension devices, wherein each suspension device comprises a rotating rod, a mounting frame, a pull rod, a buffer sleeve, a buffer spring and a fixing assembly. The mounting frame is driven to move by the wheel shaft of the vehicle body, the rotating rod and the pull rod are driven to move by the movement of the mounting frame, the damping sheet is driven to move by the movement of the pull rod, the buffer spring is extruded by the movement of the damping sheet, and the impact force generated by the movement of the wheel shaft is damped and buffered by the buffer spring.
Owner:ZHEJIANG FUCHUN SPRING CO LTD
A multi-tooth mechanical metamaterial with adjustable stiffness, preparation method thereof, and application thereof
A multi-tooth mechanical metamaterial with adjustable stiffness, and its preparation method and application. The present invention belongs to the field of mechanical metamaterials. In order to overcome the shortcomings of existing fixed stiffness structures. The metamaterial unit cell of the present invention is assembled from an inner and outer barrel. The variable stiffness shell is the main load-bearing structure of the inner and outer barrels. In order to facilitate the assembly between the unit cells, a first limiting ring, a second limiting ring and a limiting block are designed on the inner and outer barrels respectively. The function of the first limiting ring and the second limiting ring is to "clamp" when adjacent unit cells are connected to prevent different unit cells from detaching. The limiting block plays the role of transferring the load between adjacent unit cells. By making the inner and outer barrels of the unit cell rotate relative to each other, the fan-shaped teeth of different sizes are brought into contact with each other, thereby realizing the stiffness adjustment of the metamaterial. The multi-tooth mechanical metamaterial proposed by the present invention can be used in the joint transmission of flexible robots, adaptive adjustment of mechanical arms and the manufacture of aircraft landing gear.
Owner:HARBIN INST OF TECH
Grabbing integrated continuum mechanical arm
The invention relates to the technical field of robots, in particular to a grabbing and taking integrated continuum mechanical arm. The mechanical arm comprises a driving mechanism, a coupling mechanical arm body and a grabbing mechanism which are connected in sequence; the coupling mechanical arm body is provided with driving ropes distributed in the circumferential direction and comprises a flexible rod and a plurality of spherical friction bodies arranged on the flexible rod in a sleeving mode, the spherical friction bodies are sequentially connected end to end, and serpentine springs distributed in the circumferential direction are arranged between the adjacent spherical friction bodies. An electromagnetic rigidity adjusting assembly is arranged at the bottom of the coupling mechanical arm body and used for adjusting friction force of the spherical friction bodies to achieve adjustment of the rigidity of the coupling mechanical arm body. According to the integrated continuum mechanical arm for grabbing, the continuum joints formed by coupling the serpentine springs and the spherical friction bodies are adopted, the rigidity is adjustable, and the load capacity is improved under the condition that the flexibility is guaranteed.
Owner:HEFEI UNIV OF TECH
Three-degree-of-freedom parallel electromagnetic variable stiffness actuator as an end effector for robotic grinding and polishing
ActiveUS20260021576A1Programme-controlled manipulatorGripping headsAdjustable stiffnessThree degrees of freedom
A three-degree-of-freedom parallel electromagnetic variable stiffness actuator as an end effector for robotic grinding and polishing, comprising: non-stiffness electromagnetic drive branches, an electromagnetic spring drive branch, structural components, and peripheral sensor systems. There are three non-stiffness electromagnetic drive branches; three-degree-of-freedom motion can be generated through these three non-stiffness electromagnetic drive branches. For the electromagnetic spring drive branch, its driving component is an electromagnetic spring, which is responsible for providing adjustable stiffness. The actuator achieves a high-precision, high-flexibility control of the grinding and polishing end through a unique three-degree-of-freedom parallel structure.
Owner:HUAZHONG UNIV OF SCI & TECH
Periodic vibration damping structure and method of mounting same
The present application is suitable for the field of structural engineering, and provides a periodic damping structure and a mounting method thereof, the periodic damping structure comprising a lattice framework and a vibrator unit, the stiffness of the vibrator unit being adjustable; the vibrator unit is detachably connected with the lattice framework, and the included angle between the vibrator unit and any side surface of the lattice framework is adjustable; the lattice framework is spliced, and then the vibrator unit is mounted in the lattice framework, and the stiffness of the vibrator unit is adjusted according to different frequency excitations; through the detachable connection between the vibrator unit and the lattice framework, and under the action of the vibrator unit with adjustable stiffness, the mounting mode and quantity between the vibrator unit and the lattice framework are changed, so that the change of the band gap characteristics in the structure under different frequency excitations is realized, and then the optimal vibration isolation effect can be obtained in different frequency ranges, and the present application can be widely applied to various use environments.
Owner:WUHAN HAIYI HIGH END EQUIP STRUCTURE DESIGN CO LTD +1
Pile foundation structure, construction method thereof and method for adjusting pile-soil load sharing proportion
The invention belongs to the technical field of constructional engineering, and discloses a pile foundation structure, a construction method thereof and a pile-soil load sharing proportion adjusting method. The pile foundation structure comprises a pile, a bearing platform located at the top of the pile, a cushion layer located below the bearing platform and a material layer located at the bottom of the cushion layer, the pile is embedded into foundation soil, and the top of the pile penetrates through the material layer and the cushion layer to penetrate into the bearing platform to be connected with the cushion layer and the bearing platform. The material layer is of a multi-layer composite structure and comprises a low-rigidity material layer and a high-rigidity material layer. Materials with different rigidities are adopted to form the rigidity-adjustable material layer, the rigidity of the material layer can be adjusted by adjusting parameters of the material layer, and then the load sharing proportion of the pile foundation and the soil body can be adjusted.
Owner:BEIJING JINGCHENG HUAYU ARCHITECTURAL DESIGN & RES INST CO LTD +1
A multi-stable variable stiffness restorable angular lock mechanism
A multi-stable variable stiffness recoverable angle locking mechanism belongs to the technical field of mechanical structure design, comprising a main branch arm, a secondary branch arm, a cantilever, an elastic key and a hinge shaft; the root of the main branch arm and the root of the secondary branch arm are hinged through the hinge shaft; the end of the main branch arm and the end of the secondary branch arm are both provided with an external hinge hole; the main branch arm is provided with an elastic key accommodation groove; the elastic key is located in the elastic key accommodation groove; one end of the cantilever is fixedly connected to the secondary branch arm, and the other end of the cantilever is a free end; the cantilever is provided with a locking tooth groove, and the locking tooth groove is engaged with the elastic key. The multi-stable variable stiffness recoverable angle locking mechanism realizes the integration of multi-stable state shape retention, continuous adjustable stiffness and quick self-recovery locking, only needs mechanical force to drive to realize action, only needs to rely on the cooperation of elasticity and geometric constraint to realize angle locking, and has the characteristics of simple and compact structure, rapid response, high recovery precision, multiple cyclic use, and strong environmental adaptability.
Owner:NORTHEASTERN UNIV CHINA
Aeroelastic model wind tunnel test device and method with continuously adjustable rigidity and damping
The invention discloses an aeroelastic model wind tunnel test device and method with continuously adjustable rigidity and damping, and belongs to the technical field of wind tunnel tests.The aeroelastic model wind tunnel test device comprises a wind tunnel test section, a test model and a test unit, and test holes are symmetrically formed in side plates of the wind tunnel test section; the test model is installed in the test hole in a penetrating manner and extends to the outside of the wind tunnel test section; the two sides of the test model are connected with test units through rigid extension rods. According to the aeroelastic model wind tunnel test device and method with continuously adjustable rigidity and damping, the equivalent rigidity and damping characteristics of the model can be adjusted continuously and independently by adjusting electric signals in the wind tunnel test process, so that the dynamic response of an actual flexible or elastic structure is simulated more truly, and the test efficiency is improved. And the accuracy, flexibility and test efficiency of wind effect evaluation are remarkably improved.
Owner:YANGTZE UNIVERSITY
A Real-Time Bending and Shaping Method for Virtual Plants Based on Adjustable Stiffness Weights
ActiveCN121145285Bhighlight substantive featuresSignificant progressGeometric CADVirtual/augmented realityAlgorithmAdjustable stiffness
This invention provides a real-time bending and shaping method for virtual plants based on adjustable stiffness weights. The method involves configuring virtual plant parameter information and generating a parameterized plant model. The parameter information includes at least plant parameter information, plant control parameter information, and environmental parameter information. When the interactive mode is activated and the plant end is dragged, the end of the plant model is acquired and fixed at the target dragged position. Based on the target dragged position, the dragged virtual plant structure undergoes weighted inverse dynamic bending processing and interpolation. Based on the updated dragged virtual plant structure, other branch structures of the virtual plant are updated synchronously. The overall updated virtual plant structure is subdivided and subjected to Catmull-Rom curve interpolation. The interactive mode is then terminated, and the currently updated virtual plant structure is solidified. This invention uses gradual stiffness, mass curves, and weak bending moment constraints to make the bending shape of the virtual plant highly similar to the stress on real branches.
Owner:HENAN WEIDA ELECTRONIC TECH CO LTD
Balancing rod capable of adjusting rigidity and installation distance and control method thereof
Owner:TAIZHOU JIAHE AUTO STAMPING PARTS CO LTD
Shock absorber with adjustable rigidity
The invention relates to the technical field of hydraulic transmission, in particular to a rigidity-adjustable shock absorber which specifically comprises a barrel and a first spring, and one end of the first spring is fixed outside the barrel; the other end of the first spring is fixed outside the electro-hydraulic actuator, the electro-hydraulic actuator comprises a connecting part and an actuating part, and the connecting part is arranged at one end of the actuating part; the piston rod is arranged in the cylinder in a sliding mode in the axial direction, one end of the piston rod extends out of the cylinder to be connected with the connecting part, the other end of the piston rod is provided with a piston valve plate part and a magnetostriction part, and a second spring is arranged between the magnetostriction part and the piston valve plate part and abuts against the magnetostriction part and the piston valve plate part; when the magnetostriction part generates axial telescopic deformation due to the change of a magnetic field, the pre-tightening force of the second spring is changed, and when the actuating part axially moves in the electro-hydraulic actuator, the connecting part drives the piston rod to move, and then the pre-tightening force of the first spring is adjusted. The rigidity of the main spring and the rigidity of the valve plate of the shock absorber are continuously adjusted.
Owner:ZHEJIANG LVJIAYI INTELLIGENT SUSPENSION CO LTD