156 results about "Inerter" patented technology

The invention discloses a collaborative enhancement energy consumption mechanism and a support arm type fan tower drum damping device with the collaborative enhancement energy consumption mechanism, and relates to the technical field of engineering structure vibration, the collaborative enhancement energy consumption mechanism comprises a liquid column lever assembly and a plurality of inerter damping units symmetrically installed at the end of the liquid column lever assembly, and each inerter damping unit comprises a shell; the hydraulic damper and the linear-rotation converter are sequentially and axially installed in the shell from top to bottom, when the liquid column inclines, the first connecting plate is driven to drive the piston rod to stretch out and draw back, the piston rod drives the flywheel to rotate through the linear-rotation converter, and therefore vibration energy is transmitted to a fixed foundation structure through the second connecting plate to be dissipated; the invention further discloses a supporting arm type fan tower drum vibration reduction device, displacement of the vibration transmission part is transmitted to the liquid column lever through the connecting piece, the inerter damping unit is driven to stretch out and draw back, a complete energy consumption chain of the tower drum, the vibration transmission part, the connecting piece, the liquid column, the inerter damping unit and the ground is formed, and it is guaranteed that energy is stably transmitted to a fixed foundation structure.

The invention discloses an integrated rigidity damping inerter self-control type two-stage vibration reduction hydro-pneumatic suspension and a working method in the field of automobiles, a hollow plunger extends into an upper cavity of an oil cylinder, the lower end of the hollow plunger is fixedly connected with a piston, and an upper lifting lug runner is sequentially connected with an inerter pipe, an electric control throttle valve and a large hydro-pneumatic chamber through a first hydraulic oil pipe; a lower lifting lug runner is sequentially connected with a damper and a small oil gas chamber through a second hydraulic oil pipe, a built-in rigidity control valve outer cylinder with the lower end fixedly connected with a piston is arranged in the plunger, an inner cylinder with the upper end sealed and the lower end connected with the lower lifting lug through a spherical hinge is coaxially sleeved with the outer cylinder, and three rows of holes are formed in the side wall of the inner cylinder from bottom to top. Two rows of holes are formed in the side wall of the outer cylinder from bottom to top; the flow direction of oil liquid is changed when the suspension works, a seal does not need to be arranged on a piston, a longer oil through hole is formed in an outer barrel, the safety of the control valve is improved, a wheel dynamic vibration absorber is integrated to an oil cylinder, integration is achieved, an external rigidity control valve is replaced with an internal rigidity control valve, and the size of the whole suspension is reduced.

The invention provides a self-resetting liquid inerter shock insulation support. The self-resetting liquid inerter shock insulation support comprises a top plate, a middle plate, a bottom plate, a supporting ring, a flexible shock insulation body, an inerter, a resetting rod and an elastic resetting piece, the reset rod penetrates through the inerter and the middle plate, the upper end of the reset rod is connected with the top plate through an elastic reset piece, the bottom plate is provided with an arc-shaped groove, and the lower end of the reset rod is in contact fit with the arc-shaped groove; the inerter comprises a cylinder body, a spiral pipe and a piston, a sealing cavity is formed in the cylinder body, the sealing cavity is filled with working fluid, the piston divides the sealing cavity into an upper cavity and a lower cavity, the reset rod penetrates through the piston and is connected with the piston, an upper port of the spiral pipe sleeve is communicated with the upper cavity, and a lower port of the spiral pipe sleeve is communicated with the lower cavity. The inerter is implanted into the flexible shock insulation body, high static degree and low dynamic rigidity can be achieved, the shock absorption frequency band is effectively expanded, the shock insulation effect is improved, the liquid inerter can increase certain inertia mass and damping energy consumption effects for the shock insulation support, and the liquid inerter shock insulation support is simple in structure, high in durability and low in cost.

The invention relates to a self-adaptive force output and energy consumption bridge vibration and vibration control inerter tuning device, and belongs to the technical field of vibration control. Comprising a roll shaft support, a spring rod, a main inerter element, a box chamber main body, a secondary inertia flywheel, a flow guide pipe, a transmission connecting rod and a flow baffle, the main inerter element penetrates through and is arranged in the box chamber main body, the outer end of the main inerter element is connected with the spring rod, the spring rod is connected with the roll shaft support, and the roll shaft support is respectively fixed with the bottom surface of a main beam and the top of a bridge pier; in addition, the flow guide pipe is arranged in the box chamber body, a flow baffle and a transmission connecting rod are further arranged in the flow guide pipe, and the transmission connecting rod is further connected with a secondary inertia flywheel. The damping device is achieved through a hydraulic mechanism, and the damping device with the self-adaptive inerter coefficient is formed through linkage of the inerter devices in the main box chamber and the auxiliary box chamber, so that the purposes of changing the inerter coefficient in real time and damping are achieved. The shock resistance, the transmission efficiency, the energy consumption effect, the structural rigidity and the stability of a vibration reduction system can be improved.

The invention discloses a quasi-zero stiffness vibration isolator based on coupling of an inerter and a connecting rod and a parameter design method, and belongs to the technical field of vibration isolators. The quasi-zero stiffness vibration isolator comprises a connecting rod structure, a spring assembly, an inerter, a vibration isolation plate and a mounting base, the connecting rod structure comprises four connecting rods with the same length; the spring assembly comprises a connecting spring and two supporting springs; the rod pieces AB, AC, A 'B' and A 'C' are connected through hinge joints; two ends of AA'are connected with the inerter through connecting springs which are horizontally arranged in parallel; two ends of CC'are fixed on the mounting base, and two ends of BB 'are fixedly hinged on the vibration isolation plate; the BC end and the B 'C' end are connected through a vertical supporting spring; the supporting spring provides positive rigidity in the vertical direction, the connecting spring provides negative rigidity, and the inertial container amplifies the equivalent mass of the vibration isolation target through inertia so as to reduce the resonance frequency. The vibration isolator achieves low force transmissibility and displacement transmissibility under low-frequency excitation, and the adaptability and stability of the vibration isolator are enhanced.

The invention discloses a bridge electromagnetic inertial mass hybrid control damping system and an overall hybrid control method. The damping system comprises an inertial mass assembly, an electromagnetic assembly, a rigidity assembly and a corresponding parameter adjusting circuit. Wherein the ball screw system is used for converting linear translation into rotation, the inertial mass assembly is used for providing acceleration type inertial mass damping, the electromagnetic assembly is used for providing speed type electromagnetic damping, and the rigidity assembly is used for providing rigidity. In a normal operation stage, a parameter adjusting circuit is utilized, and the purpose of adjusting electromagnetic damping and rigidity values is achieved by changing circuit input, so that semi-active tuning is realized; under the action of an earthquake, circuit input is fixed, so that parameters of the damper are constant, and the anti-seismic robustness of the damper can be improved.

The invention provides a fan tuned mass inerter damper structure and a parameter design method, and belongs to the field of ocean engineering vibration reduction. The structure comprises an engineering structure, an outer sleeve, a roller, an inner sleeve, an additional mass block, four damper spring units and four inerter system units. The engineering structure is fixed with the external sleeve, and a guide rail is formed between the engineering structure and the external sleeve; the additional mass block is arranged in the center of the inner sleeve, the four inerter system units are connected with the damper spring unit and located on the same plane, the other ends of the four inerter system units are connected with the inner wall of the inner sleeve, and each inerter system unit comprises an inerter system spring, a damping unit, a first inerter unit and a second inerter unit. According to the structure, translation-rotation conversion is achieved through the inerter unit, efficient inertia synergy is achieved with small physical mass, and the load of a draught fan is relieved; the four units are symmetrically arranged to ensure omnidirectional vibration suppression; the roller guide rail reduces friction and improves response sensitivity and energy consumption efficiency; according to the parameter design method, parameters are accurately optimized, and broadband vibration reduction performance and engineering reliability are guaranteed.

The invention discloses a damping-adjustable inerter shock absorber which comprises an inerter and a magneto-rheological shock absorber, the lower end of the inerter is connected with the upper end of the magneto-rheological shock absorber, the inerter comprises a ball screw (1) and a ball nut (2), and the magneto-rheological shock absorber comprises a base, an outer cylinder barrel (4), a piston (5) and a rotating barrel (6). The upper end of the rotating cylinder (6) is fixedly connected with the ball nut (2), the piston (5) and the outer cylinder barrel (4) are both fixedly arranged on the base, the lower end of the rotating cylinder (6) is connected with the outer cylinder barrel (4) in an inserted mode, the piston (5) is located in the rotating cylinder (6), and magnetorheological gel is filled among the outer cylinder barrel (4), the piston (5) and the rotating cylinder (6). The damper has the advantages of attenuating the vibration amplitude and accelerating the attenuation rate at the same time, and has a wide damping adjustable range.

The invention belongs to the technical field of power transmission tower structure damping, and discloses an inerter particle type power transmission tower damping device with a multidirectional control effect. The inerter is introduced into the particle damper, so that the total mass of the damping device is reduced, and the light weight of the device is achieved. And in consideration of the fact that the seismic response of the power transmission tower is multidirectional motion, the arrangement mode of the particles and the inerter is optimally designed, so that the damping effect of the device is further improved. The inerter can generate inertia force opposite to the structural vibration direction, and the dynamic damping effect of the particle damper is guaranteed while the number of particles is reduced. The inerter composed of the gear and the rack is small in dead weight, compact in structure and easy to install, a power transmission mechanism has low energy loss, the gear and the rack are in rigid meshing transmission, rapid rotation of the flywheel can be achieved, the inerter has high sensitivity to sensing of earthquake response of a power transmission tower, and the inerter is suitable for popularization and application. And large rotation inertia force can be generated in a limited space.

The present application relates to a kind of three-dimensional pendulum tuning liquid inductance device, the inductance device includes tuning liquid column damper and tuning mass inductance container, tuning liquid column damper includes swing arm, ball hinge end head, swing arm connector, annular water tank and tuning liquid, swing arm one end is connected with ball hinge end head, the other end is connected with annular water tank by swing arm connector, tuning liquid is filled in annular water tank;Tuning mass inductance container is installed in the lower portion of tuning liquid column damper, ball hinge end head is connected with the structure to be damped, annular water tank swings and drives tuning mass inductance container to carry out energy consumption, the inductance device tuning period is adjustable.Compared with prior art, the present application has can control the vibration in each direction of the structure to be controlled, wide range of use;The parameters of each component can be flexibly adjusted to achieve the best damping effect, while tuning mass inductance container can realize the energy absorption of input structure with smaller space and achieve the two goals of energy dissipation and reduction of upper tuning liquid mass.

The application belongs to the technical field of structural vibration control, and relates to a mechanical-electrical clutch variable inertial damper, which is a semi-active damping device applicable to civil structures and used for inhibiting the vibration of the structure under the action of an earthquake or wind load. The device is realized by matching a mechanical inertial system, an electrical inertial system, an energy recovery control system and an active inertial mass control system. The application ensures that the device provides an inertial force in the acceleration stage of the structure and does not provide a force in the deceleration stage of the structure. The electrical inertial system can effectively reduce the design capacity of the mechanical inertial system, and in combination with the active inertial mass control system, the semi-active variable inertial control similar to bang-bang control can be realized, and in combination with the energy recovery control system, the kinetic energy of the flywheel can be recovered in the deceleration stage.

The present invention relates to a vertical cross - layer tuned inerter damping system with geometric non - linear gain. The system includes a displacement amplification lever mechanism, a ball screw mechanism, a gear - rack mechanism, and a tuned damping mechanism connected in sequence. The displacement amplification lever mechanism and the ball screw mechanism are arranged across floors in the floor structure, and the gear - rack mechanism and the tuned damping mechanism are arranged on the structural floor. The displacement amplification lever mechanism and the tuned damping mechanism are respectively connected to the structure; the rotating lever is hinged to the displacement primary transfer rod and the connecting rod respectively; the connecting rod is hinged to the displacement secondary transfer rod, and the displacement secondary transfer rod extends into the nut; the inertial gear is rigidly connected to the nut, and the translation rod meshes with the inertial gear. Compared with the prior art, the present invention non - linearly transfers and amplifies the vertical deformation during the structural vibration process, thereby driving the inerter and the damper to operate, effectively introducing non - linear inertial mass amplification, damping enhancement, and precise modal tuning control, and significantly improving the control efficiency of the system.

The application discloses a parameter intelligent adjustable inertial mass damper and a control method thereof, which are applied to efficient vibration control of super-long stay cables on large-span cable-stayed bridges in the field of civil engineering, and the damper is composed of an inertial mass element, a damping element, a self-power supply system and a heat dissipation system.The inertial mass element is combined with a conductor disc and a linear module through a ball screw, and the continuous adjustment of the equivalent inertial mass is realized by using a stepping motor to control the position of a sliding block; the damping element adopts an electric eddy current structure, a damping force is generated by cutting the magnetic field of a permanent magnet and an electromagnet by a rotating conductor disc, and the real-time regulation and control of the damping force are realized by adjusting the current of the electromagnet.The application realizes the real-time calculation and self-adaptive adjustment of optimal and suboptimal control parameters of a target mode by combining acceleration spectrum analysis and an optimization algorithm, and has the advantages of high power, high efficiency, compact structure, intelligent control, self-power supply and strong durability, and the vibration reduction effect of the stay cable is significantly improved.

The invention discloses a viscous inertial inhaul cable damper with self-adaptive damping parameters. The viscous inertial inhaul cable damper comprises a cable clamp, a first proportional rod, a first supporting rod, a first mass block, a first damper, an upper support and a lower support. The first proportion rod is sequentially provided with a first hinge hole, a second hinge hole, a third hinge hole and a fourth hinge hole in the length direction of the first proportion rod. The first hinge hole is hinged to the cable clamp. The second hinge hole is hinged to one end of the first supporting rod. The third hinge hole is hinged with one end of the first damper; the fourth hinge hole is hinged with the first mass block; the other end of the first supporting rod is hinged to the upper end of the upper support, and the other end of the first damper is hinged to the upper support. And the lower end of the upper bracket is connected with the upper end of the lower bracket. The technical problems that an existing inhaul cable damper is insufficient in displacement amplification capacity, complex in structure, large in size and difficult to meet the requirement for large vibration force of a long inhaul cable are solved.

The invention discloses an arch bridge rigid suspender tuned mass inertial torsion damper and an optimization design method thereof.The damper comprises a transmission disc, a dynamic damping disc, a transmission disc and an inerter disc, the transmission disc is fixedly connected with a suspender, the dynamic damping disc is rotatably connected to the suspender, a pre-pressure mechanism is arranged on the transmission disc, and the transmission disc is connected with the inerter disc; the dynamic damping disc is provided with a transmission block which is used for being connected with a pre-pressure mechanism so that rotation of the transmission disc can drive the dynamic damping disc to rotate, the transmission disc is connected to the hanging rod in a sliding mode, a plurality of first chiral metamaterial screws are connected between the transmission disc and the dynamic damping disc, and the first chiral metamaterial screws are arranged in a chiral mode. The inerter disc is rotatably connected to the hanging rod, a plurality of second chiral metamaterial screws are connected between the transmission disc and the inerter disc, and the second chiral metamaterial screws are arranged in a chiral mode. The problems that a traditional inerter is large in size, sensitive to amplitude and difficult to adapt to the degree of freedom of torsion are solved, and efficient, broadband and reliable vibration control is achieved.

The application discloses a kind of distributed drive automobile inertial suspension semi-active control optimization method in the technical field of vehicle suspension vibration isolation, and the method comprises the following working steps: step one, establishing suspension controlled model and ideal reference model;Step two, construct three-order generalized ground semi-active control rule;Step three, phase-frequency collaborative optimization and topological structure screening;Step four, distributed drive automobile inertial suspension semi-active control optimization.The application has the advantages of reducing the performance deviation between actual response and ideal model, improving road friendliness while ensuring ride comfort, and adapting to time-varying road excitation.

The large-span bridge three-dimensional vibration control composite damping system comprises a first energy dissipation assembly and a second energy dissipation assembly, the first energy dissipation assembly comprises an outer cylinder, a force transmission column, an axial inhaul cable and a radial inhaul cable, a sliding inner ring is installed on the inner side of the outer cylinder in a sliding mode, and the force transmission column is coaxially assembled in the sliding inner ring; straight radial inhaul cables which are distributed in a radial mode are arranged between the force transmission column and the sliding inner ring, axial inhaul cables which extend axially and are in a loose state are further arranged on the portions, located on the two sides of the radial inhaul cables, in the outer barrel, one end of each axial inhaul cable is connected with the force transmission column, and the other end of each axial inhaul cable is connected with a side plate on the corresponding side of the outer barrel. The axial inhaul cable and the radial inhaul cable are both made of shape memory alloy, and the second energy dissipation assembly comprises an electromagnetic inertial damper. According to the invention, the energy consumption assemblies are arranged in different dimensions, so that longitudinal, transverse and vertical multi-dimensional cooperative vibration control can be realized. In addition, by introducing a grading working strategy of the energy consumption assembly, external loads with different strengths can be controlled.

The present application relates to a kind of variable stiffness variable damping hydrodynamic inertance vibration isolation device, including cylinder, piston being movably arranged in the inside of cylinder, annular end cover being arranged in the top port of cylinder, the central axis of the piston is vertically through annular end cover;The inner peripheral side wall of the annular end cover is fixedly provided with annular end cover magneto-rheological elastomer, the inner peripheral side wall of the end cover magneto-rheological elastomer is fixedly provided with end cover electrically conductive sleeve, the inner side of the end cover electrically conductive sleeve is provided with end cover magnetic block fixed in the central axis of piston, end cover excitation coil is arranged on the end cover magnetic block and annular end cover, and the rigidity and damping of end cover magneto-rheological elastomer are controlled by the magnetic field generated by the energization of end cover excitation coil.The present application is reasonable in design, can realize the dynamic adjustment of rigidity and damping, effectively solve the problem that traditional structure is not good in vibration isolation effect when facing different frequency vibrations, and improve the practicality and universality of vibration isolation technology.

The present application relates to bridge damping technical field, specifically to a kind of super low frequency tuning lever mass inertial mass damper parameter design method, the damper includes: lever, mass, spring and inertial mass mechanism.Lever middle part is rotatably arranged on the structure to be damped, and lever is divided into power arm and resistance arm;Mass is arranged on power arm;Spring one end is connected with resistance arm, and the other end is connected with the structure to be damped;Inertial mass mechanism includes: arc rack, rotating shaft, flywheel and gear;Rotating shaft is rotatably connected with power arm;Flywheel is arranged on rotating shaft;Gear is arranged on rotating shaft, arc rack is fixedly arranged, and cooperates with gear, power arm swings, gear rotates relative to arc rack, and drives flywheel to rotate.This scheme can solve the problem that the elongation and the amount of TMD spring are increased in the prior art by using super low frequency TMD scheme, the installation space of TMD is limited, and the use cost of TMD is greatly increased, and the influence of TMD self weight on bridge structure.

The invention discloses a pendulum type tuned mass damping device based on a guide cable, a pulley block and an inerter, and belongs to the technical field of vibration control, the pendulum type tuned mass damping device comprises an upper fixing platform, a tower drum and a lower fixing platform, a mass pendulum is connected below the upper fixing platform, a pulley fixing platform is arranged at the lower end of the mass pendulum, and an upper pulley is arranged at the lower end of the pulley fixing platform; a lower pulley is arranged on the lower fixed platform, a guide cable is arranged between the upper pulley and the lower pulley, and the guide cable is connected with an inerter damper. According to the pendulum type tuned mass damping device based on the guide cable, the pulley block and the inerter, the pulley block is arranged on the mass pendulum, and the displacement of the mass pendulum is amplified and transmitted to the inerter damper connected with the guide cable through the pulley block and the guide cable on the pulley block; the lightweight design of the tuned mass damping device in a narrow space is realized through the mass amplification effect of the inerter damper, and the suppression of the vibration of the tower drum is realized through the inertia force of the mass pendulum and the damping force of the damping element.

The invention discloses a lunar rover adjustable inerter suspension device based on stepless speed change. Comprising a shell, electromagnetic windings arranged in the shell in an array mode, planetary intermediate gear fixers connected with the electromagnetic windings, a flywheel arranged in the shell, an output bevel gear connected with the flywheel, and a plurality of planetary intermediate gears arranged on the outer side of the output bevel gear and connected with the output bevel gear in a meshed mode. The planetary intermediate gear is arranged in the shell, the input bevel gear is arranged on the outer side of the planetary intermediate gear and connected with the planetary intermediate gear in a meshed mode, the lead screw is arranged below the input bevel gear and fixedly connected with the input bevel gear, the lead screw nut is arranged on the lead screw and connected with the lead screw, and fixed lifting lugs are arranged at the upper end of the shell and the lower end of the lead screw nut. The planet intermediate gear is installed on the planet intermediate gear fixing device through the gear shaft, and the electromagnetic winding is connected with the planet intermediate gear fixing device. The beneficial effects of the invention are that the method effectively makes up the defects of the prior art in the aspects of adjustment flexibility, adaptability, precision and extreme environment adaptation to the moon.

The invention provides a pulley block planetary composite damping shock absorber of an ultra-long flexible blade of a wind turbine generator and a control method of the pulley block planetary composite damping shock absorber, and belongs to the field of wind power equipment. The system comprises a pulley block, a pulley block assembly, a sun inerter device, a planet inerter device and a shell plate. When the blades swing, shimmy and twist, bending deformation of the blades is transmitted to the pulley blocks through the steel wire cables, vibration displacement is amplified, the inerter system is driven to rotate at a high speed, and under the coordination effect of the inerter effect and various damping elements, the system can convert inertia force of the inerter device into reverse damping force. And energy is efficiently dissipated through multiple paths such as oil circulation and particle collision. Through elastic connection, the planetary inerter compound system achieves adjustment of damping characteristics and broadband vibration suppression, the vibration amplitude of the fan blade is remarkably reduced, the service life of the fan blade is prolonged, and the reliability of the fan blade is improved.

The application relates to a space paddle type inertial device, which comprises a piston driving rod, a flywheel, a rotary damper and a space paddle type rotating shaft; the space paddle type rotating shaft comprises a spherical hinge, a bearing and a connecting rod which are sequentially connected; the flywheel and the rotary damper are connected with two ends of the connecting rod respectively, and the piston driving rod is connected with the spherical hinge; the flywheel and the rotary damper rotate around the same axis, the piston driving rod moves horizontally under the drive of the outside world, the flywheel and the rotary damper are driven to rotate by the space paddle type rotating shaft, and the translation of the piston driving rod is converted into the rotation of the flywheel and the rotary damper by the space paddle type rotating shaft. The rotation of the flywheel realizes mass amplification. The application realizes mass amplification, damping energy consumption, and has the advantages of simple mechanical form, flexible installation, easy implementation, high-efficiency vibration reduction, simple structure, low cost, convenient maintenance and high energy dissipation efficiency compared with the prior art.

The invention belongs to the related technical field of building shock insulation, and discloses an integrated anti-seismic optimization design method and equipment for a foundation shock insulation structure with an additional tuning inerter shock absorption system, and the method comprises the following steps: (1) simplifying the foundation shock insulation structure with the additional tuning inerter shock absorption system into a two-degree-of-freedom system, carrying out response spectrum analysis on the two-degree-of-freedom system based on a standard response spectrum; (2) optimizing design parameters of the tuning inerter system based on a response spectrum analysis result; and (3) determining an effective damping ratio corresponding to the tuning inerter system based on a principle that the displacement of the vibration isolation structure is equal, and then, after an equivalent basic vibration isolation structure with an additional effective damping ratio corresponding to the basic vibration isolation structure of the additional tuning inerter damping system is established, carrying out structural design based on the equivalent basic vibration isolation structure. Therefore, the integrated anti-seismic optimization design of the foundation seismic isolation structure additionally provided with the tuning inerter damping system is completed. According to the invention, the integrated anti-seismic optimization design of the foundation seismic isolation structure additionally provided with the tuning inerter damping system is realized.

The hydraulic inerter with the adjustable inerter coefficient comprises a cylinder body, the interior of the cylinder body is divided into a main cylinder body and an auxiliary cylinder body through a wall face with a round hole, a piston block is arranged in the main cylinder body, and piston rods are coaxially and fixedly arranged on the two end sides of the piston block. The end of one piston rod penetrates into the auxiliary cylinder body through a round hole and is connected with the auxiliary cylinder body through a spring which is coaxially connected with the piston rod, the end of the other piston rod penetrates out of the main cylinder body to the outside, reserved holes are formed in the cylinder walls, on the two end sides of the piston block, of the main cylinder body, and the two reserved holes are communicated through a tubular channel. The tubular channel is composed of a straight pipe section, a spiral pipe section and a connecting pipe. According to the hydraulic inerter with the adjustable inerter coefficient, when the excitation is continuously small, the dynamic mass of the structure is reduced by reducing the inerter coefficient; when excitation is large, large inertia force is output to assist the structure in damping by increasing the inerter coefficient.

The invention belongs to the technical field of pile foundations, and particularly relates to an assembly type vibration reduction reinforcing uplift pile based on inerter damping and a mounting method. The assembly type vibration reduction reinforcing uplift pile comprises an inerter multidirectional vibration reduction device, a first shell is arranged on the outer side of the inerter multidirectional vibration reduction device, a plurality of piston dampers are connected to the inner wall of the upper portion of the first shell through spherical hinges, a connecting plate is arranged in the first shell, and the outer wall of the connecting plate is connected with all the piston dampers through spherical hinges; the upper portion of the connecting plate is connected with an upper-layer building, the lower portion of the connecting plate is connected with an inerter damping assembly, a bottom plate is arranged below the inerter damping assembly, and the bottom plate is fixedly connected with the first shell; and an elastic component is arranged between the connecting plate and the bottom plate. The method has the advantages that damage to the structure under vibration disturbance can be reduced, the vibration control efficiency is improved, assembly type installation is convenient and fast in the construction process, and the pile body is uplift-resistant.

The application discloses a parallel hole damping-spiral tube inerter underwater damping device and belongs to the technical field of underwater vibration control. The device comprises an upper shell, a lower shell, a damping spring, an open small hole damping and an open fluid inerter. The upper shell and the lower shell are two parts in relative sliding. The damping spring and the open small hole damping are assembled in parallel to form an integral body, which together constitutes an open spring damping. The open spring damping and the open fluid inerter are connected in parallel, and the upper and lower ends of the two are respectively fixed to the upper shell and the lower shell. The open small hole damping and the open fluid inerter are both installed in the upper shell and the lower shell. The application adopts a parallel topology structure of inerter, damping and spring. The double spiral pipes and the symmetrical piston rods realize the fluid inerter effect in two directions. The small holes on the damping piston realize the speed-dependent throttling damping. The device has the characteristics of wide frequency vibration isolation, strong static load capacity, symmetrical positive and negative characteristics and deep water environment.

A semi-active inerter damper based on magnetorheological fluid belongs to the technical field of dampers and comprises an upper cover plate, an upper shell, a lower shell, a lower cover plate and a connecting rod, the upper cover plate is arranged on the upper end face of the upper shell, the lower end face of the upper shell is connected with the upper end face of the lower shell, the lower cover plate is arranged on the lower end face of the lower shell, and the connecting rod is connected with the lower cover plate. The outer side wall of the upper shell is connected with a magnet exciting coil; a magnetorheological fluid flywheel and a support are arranged in the upper shell, a lead screw and a connecting piece are arranged in the lower shell, the magnetorheological fluid flywheel is connected to the lead screw through the support, the lead screw is connected with the connecting piece, the upper end of the connecting rod is connected to the connecting piece, and the lower end of the connecting rod penetrates through the lower cover plate and extends in the direction away from the lower shell. Through semi-active adjustment of the inerter coefficient, the damper can be more accurately matched with the vibration mode of the inhaul cable, so that the more effective vibration reduction effect is achieved, the damper can adapt to more complex vibration conditions, and the durability and safety of the cable-stayed bridge inhaul cable are improved.

The invention discloses a vibration energy recovery device for a composite double-frequency-raising ball screw inerter. Comprising a shell, a ball screw arranged on the shell, a ball nut arranged on the ball screw, a dual frequency raising device connected with the ball nut, a self-disconnection device connected with the dual frequency raising device, an electromagnetic power generation element connected with the dual frequency raising device, and an elastic piezoelectric power generation element connected with the ball screw, the upper lifting lug is arranged above the ball screw, the lower lifting lug is arranged below the shell, the upper lifting lug is fixedly connected with the ball screw, the ball screw penetrates through the shell, the other end of the ball screw is connected with the elastic piezoelectric power generation element, and the lower lifting lug is fixedly installed on the shell. The vibration energy recovery device has the beneficial effects that vibration reduction and acceleration energy feedback can be considered according to different working conditions of a suspension system, and the problems that a traditional suspension vibration energy recovery device is low in energy recovery efficiency and cannot maximize the performance of a suspension are solved.

The utility model discloses a lever inertial damper facilitating adjustment of the amplification coefficient of a lever, and relates to the technical field of bridge vibration reduction. Comprising a mounting shell, a sliding block and a dowel bar, a guide rod is arranged in the mounting shell, two sets of connecting plates are arranged on the two sides of the sliding block, two sets of mounting bases are arranged on the two sides of the mounting shell, and a telescopic rod is arranged at the output end of an electric push rod. The electric push rod, the sliding block and other components are arranged, the mounting shell and the guide rod can limit and assist the sliding block in moving up and down for a proper distance in the mounting shell, the electric push rod operates, the telescopic rod can adjust the use height of the sliding block in the mounting shell up and down, and the use angle of the dowel bar is changed; therefore, the problem that the amplification coefficient of the lever is inconvenient to adjust to be matched with a damper for use is effectively solved, the adaptability of the device under different working conditions is effectively improved, and the optimal vibration control effect is provided.