113 results about "Dynamic Vibration Absorber" patented technology

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 relates to the technical field of structural vibration control, in particular to an adjustable electric damping-negative stiffness dynamic vibration absorber for a flexible shafting. According to the technical scheme, the damping device comprises a support and a rolling bearing, a plurality of first supporting rods used for supporting are arranged outside the rolling bearing, an electric damper used for absorbing vibration is arranged at one end of each first supporting rod, and a second supporting rod used for supporting is arranged on the other side, away from the first supporting rods, of each electric damper. A negative stiffness vibration absorber is arranged at the end, away from the electric damper, of the second supporting rod, and the electric damper comprises an auxiliary circular ring used for bearing loads. Through the arrangement of the adjusting plate, the adjusting bolt, the disc spring, the mass block, the movable magnet, the static magnet and the electric damper, the purposes of vibration absorption and vibration reduction can be achieved at the transcritical rotating speed and the supercritical working rotating speed, and the negative stiffness dynamic vibration absorption frequency and the electric damping suppression modal frequency can be rapidly adjusted according to the change of the operation working condition; and the application range and the universality are improved.

The present invention discloses a suspension structure and parameter design method for suppressing high-frequency vibration of a vehicle body by three measures in the automotive field. An existing stiffness-damping inertia autonomous controllable suspension and a wheel high-frequency dynamic vibration absorber are combined to form a suspension for suppressing high-frequency vibration of a vehicle body by three measures. On the basis of vehicle body mass, wheel mass and equivalent stiffness, the mass of the wheel high-frequency dynamic vibration absorber and the minimum stiffness of the suspension in comfort mode are determined according to automobile design requirements. The damping and inertia of the inertia tube, the stiffness and damping of the wheel high-frequency dynamic vibration absorber are optimized with the goal of minimizing the objective function. When the vehicle is traveling on a bad road, the high-frequency vibration suppression measure transmitted from the wheel to the vehicle body is expanded to three measures of wheel high-frequency dynamic vibration absorption, vibration isolation and anti-resonance vibration reduction that work in coordination with each other, so that the advantage of the wheel high-frequency dynamic vibration absorption measure in cutting the peak of the high-frequency vibration of the vehicle body and the advantage of the anti-resonance vibration reduction measure in narrowing the bandwidth of the high-frequency vibration frequency band of the vehicle body are organically combined, and the vibration of the vehicle body in the high-frequency vibration band is completely flattened.

An actuator for a head-up display, includes a link attached to one end of an aspheric mirror, a driving force transmission including a lead screw to move the link, a driver to allow the lead screw to rotate along the axis of rotation of a motor as the motor is driven, a motor bracket disposed on top of the motor and attached to the driver to support the driver, a top motor mount disposed on the top of the motor, a bottom motor mount disposed on the bottom of the motor, a vibration damping part disposed between the top motor mount and the motor bracket, to absorb vibration from the motor, and a cantilever type dynamic vibration absorber disposed on both ends of the bottom motor mount, to absorb vibration from the motor.

The utility model relates to the technical field of vibration reduction, in particular to a dynamic vibration absorber which comprises a fixing assembly which can be fixedly arranged on a pipeline in a sleeving mode. The elastic damping assemblies are arranged on the outer side of the fixing assembly at intervals in the circumferential direction of the fixing assembly, and the elastic damping assemblies are detachably connected with the fixing assembly; and the counterweight assembly is arranged on the fixing assembly in a sleeving manner, and the counterweight assembly is detachably connected with the elastic damping assembly. The vibration of the pipeline can be reduced, so that the noise is reduced, and the influence on the working state of personnel is reduced.

The invention discloses a ship pipeline particle damping vibration absorption system and method based on dynamic adjustment. The system comprises a pipeline clamp component and a dynamic vibration absorber. The dynamic vibration absorber comprises a main spring component connected with the pipeline clamp component, a particle damping assembly module connected with the main spring component and a mass balance weight module. The main spring component comprises a center spring and a spring rigidity adjusting module. The particle damping assembly module comprises a fan-shaped metal frame and a plurality of particle damping vibration attenuation units arranged on the fan-shaped metal frame; vibration energy is dissipated through collision and friction of metal particles in the particle damping vibration attenuation unit, the particle diameter and the filling rate are flexibly adjusted according to actual working conditions, and the vibration absorption frequency range is widened. The mass balance weight module comprises a plurality of detachable balance weight pieces which are arranged in a stacked mode. The vibration suppression device is compact in structure and can flexibly adapt to various working conditions, and efficient suppression of vibration at the characteristic frequency position of the pipeline is achieved by dynamically adjusting the spring rigidity, the particle damping parameters and the mass balance weight.

To suppress horizontal vibration of a nuclear pressure vessel during an earthquake, and make a dynamic vibration absorber compact to suppress an installation space of the dynamic vibration absorber, in a nuclear power plant.SOLUTION: An earthquake resistance support device for a nuclear power plant is arranged in a reactor containment vessel, and suppresses horizontal vibration of a reactor pressure vessel supported by a pedestal when an earthquake occurs. The earthquake resistance support device comprises a horizontal beam that is arranged between the reactor containment vessel and the reactor pressure vessel, and the pedestal, and extends in the radial direction of the reactor pressure vessel and the pedestal; and a dynamic vibration absorber installed on the horizontal beam. The dynamic vibration absorber comprises a hollow weight extrapolated to the horizontal beam and movable in an axial direction of the horizontal beam, and a coil spring device that elastically supports the hollow weight in the axial direction of the horizontal beam, to allow the hollow weight to vibrate in the axial direction of the horizontal beam.SELECTED DRAWING: Figure 3

The application discloses an adjustable nonlinear dynamic vibration absorber and system, and has the technical scheme that a tuning mass block is slidably connected to the surface of a support plate, and first scissor structures are rotatably connected between the tuning mass block and the two ends of the support plate; the first scissor structures are provided with second scissor structures and dampers, the second scissor structures and the dampers can drive the first scissor structures to stretch and contract through elastic belts, the second scissor structures are provided with elastic elements for driving the second scissor structures to stretch and contract; the stretching direction of the elastic elements is parallel to the sliding direction of the tuning mass block, and is perpendicular to the damping direction of the dampers, so that the first scissor structures and the second scissor structures can realize vibration absorption through geometric nonlinearity when moving. The stiffness and damping characteristics of the application can be adjusted, and the linear elements can be used to realize nonlinear stiffness, damping and super-low natural frequency, and the problem of Duffing system instability that cannot be eliminated by traditional nonlinear vibration absorbers is solved.

To provide a dynamic vibration absorber capable of appropriately attenuating the vibration of an object. 【Solution means】The dynamic vibration absorber has a curved surface that is curved in a concave shape and has at least one groove formed in the bending direction, and moves in accordance with the vibration of the object. The dynamic vibration absorber includes a moving part that rolls or slides on the curved surface, and a mass body that moves in the bending direction by the rolling or sliding of the moving part.

The application discloses a kind of floating plate low height power vibration absorber, including mass, mass both ends are symmetrically arranged first support, first support is mutually perpendicular fixed part and support part, the support part and mass both ends are fixedly connected rubber layer, the bottom surface of mass distance fixed part bottom surface has interval S.The power vibration absorber presented in the application, mass, support and rubber layer are sequentially laminated connection, so that the height of whole power vibration absorber is reduced, and the driving of vehicle is not affected.The thickness of mass can be controlled, and the frequency range of power vibration absorber is adjusted.

Provided is a dynamic vibration absorber that includes a first support part, a second support part separated from the first support part by a first gap, and at least a first vibration absorber module, the first vibration absorber module includes a first surface of the first support part, a first surface of the second support part, and a first vibration absorber cylinder connecting the first surface of the first support part and the first surface of the second support part, the first vibration absorber cylinder includes a first cylindrical portion and at least a first movable mass, the first movable mass being connected to the first cylindrical portion to vibrate at a predetermined frequency.

The invention discloses a heat distribution pipeline vibration response analysis and vibration reduction control method along with bridge laying, and the method comprises the following steps: S1, building a pipeline vibration analysis model containing fluid flow, external excitation and a thermal expansion effect based on an energy finite element method, and calculating the energy density distribution and energy flow distribution of a pipeline; s2, on the basis of the energy density distribution and the energy flow distribution, identifying damaged and weak parts of the pipeline through predefined damage indexes; s3, designing at least one magnetic damping dynamic vibration absorber based on a fixed-point theory, and determining the mounting position of the magnetic damping dynamic vibration absorber along the pipeline through a multi-objective optimization algorithm; s4, performing thermal stress coupling analysis on the pipeline system added with the magnetic damping dynamic vibration absorber; and S5, the vibration reduction effect is verified through finite element simulation and field tests. Through the pipeline vibration analysis model established based on the energy finite element method, the energy density and the energy flow distribution of the pipeline in the axial direction are accurately calculated, and the propagation path and the concentration area of vibration energy are revealed.

The invention discloses a gradient embedded acoustic black hole and dynamic vibration absorber composite vibration isolator design method based on a reduced multi-body system transfer matrix method. Based on an acoustic black hole principle and a dynamic vibration absorber working principle, a composite structure comprising a plurality of gradient embedded acoustic black holes and a dynamic vibration absorber is designed. Compared with a gradient embedded acoustic black hole structure with the same geometric size and material, the gradient embedded acoustic black hole and dynamic vibration absorber composite structure has better low-frequency broadband vibration isolation performance.

The invention discloses a frequency-adjustable dynamic vibration absorber, and belongs to the technical field of dynamic vibration absorbers, the frequency-adjustable dynamic vibration absorber comprises a fixed support assembly, a plate spring, a mass block, a driving assembly and a sliding clamp, and the fixed support assembly is provided with a plate spring mounting part and a driving assembly mounting part; the middle part of the plate spring is mounted on the plate spring mounting part, and two ends of the plate spring are free ends which are respectively provided with a group of mass blocks; the driving assembly is mounted on the driving assembly mounting part; the area between the middle and the free end of the plate spring is the movement area of the sliding clamps, the two sides of the plate spring are each provided with one movement area, one sliding clamp is arranged in each movement area, the sliding clamps are in sliding connection with the plate spring, and the sliding clamps are in transmission connection with the driving assembly. The vibration absorber is driven by the driving assembly to linearly move in the length direction of the plate spring, the effective working length of the plate spring is changed, the inherent frequency of the plate spring is adjusted, the inherent frequency of the vibration absorber is synchronously matched with the external excitation frequency, and the optimal vibration absorption effect is achieved.

The invention discloses a frequency-adjustable type double-order dynamic vibration absorber, and relates to the field of vibration control, the frequency-adjustable type double-order dynamic vibration absorber comprises a supporting base, a plate spring used for absorbing vibration force is arranged at the top of the supporting base, the plate spring comprises at least three supporting layers and elastic layers located between the adjacent supporting layers, and the supporting layers and the elastic layers are fixed through vulcanization bonding; mass blocks are arranged at the tops of the two ends of the plate spring, absorption seats are arranged at the bottoms of the two ends of the plate spring and located at the mass blocks, and the mass blocks longitudinally move at the tops of the absorption seats; the adjusting structure comprises a body cover plate arranged at the top of the plate spring relative to the supporting base, limiting beams used for limiting movement of the mass block are arranged on the two sides of the body cover plate, adjusting clamping plates are movably arranged in the middles of the limiting beams, and the adjusting clamping plates drive the mass block to transversely move and adjust the vibration frequency of the plate spring. Movement of the mass block is flexibly adjusted to enable vibration frequencies to be matched, and meanwhile double vibration absorption is suitable for medium-frequency and high-frequency vibration absorption work.

The utility model relates to a multifunctional hybrid dynamic vibration absorption device which comprises a spring mass system, a magnetic force adjusting system and a passive dynamic vibration absorber part, and the passive dynamic vibration absorber part is of a cantilever beam structure. A spring mass system and a magnetic force adjusting system are installed on the cantilever beam structure. An adjusting mass block can be additionally arranged on the basic mass block, so that mass adjustment is realized. The elastic rod is of a cantilever beam structure, the position of the main mass can be adjusted through the adjusting screw, and therefore fine adjustment of rigidity is achieved. According to the utility model, an independent magnetic force adjusting system composed of the magnetic circuit mass block, the driving winding and the permanent magnet is provided, after the system is electrified, electromagnetic force can be generated in the vibration direction, and active control can be realized by matching with a sensor and a control system.

The invention relates to a dynamic vibration absorber based on acoustic black hole and particle damping coupling, which comprises an acoustic black hole structure and a cavity shell, the acoustic black hole structure comprises a thickness gradual change area and a uniform thickness area, and the thickness of the thickness gradual change area is gradually reduced from the maximum thickness end to the minimum thickness end; the minimum thickness end of the uniform thickness area and the minimum thickness end of the thickness gradual change area are connected into a whole, and a damping covering layer is arranged at the joint of the thickness gradual change area and the uniform thickness area. The cavity shell covers the acoustic black hole structure, a cavity is formed in the cavity shell, partition plates are arranged in the cavity at intervals, the adjacent partition plates divide the cavity into sub-cavities which are not communicated with one another, the sub-cavities are filled with free particles, and the height of the partition plates in the cavity is matched with the outer contour of the acoustic black hole structure in a coordinated mode. The gap between the top of each partition plate and the acoustic black hole structure is smaller than the diameter of a free particle. By means of the synergistic effect of acoustic black hole energy gathering and particle damping energy dissipation, the overall vibration reduction efficiency is improved, and the effective frequency band is widened.

The present disclosure relates to a dynamic vibration absorber for reducing vibrations of a component installed on a vehicle frame member. The dynamic vibration absorber has an air tank, an elastic member comprising a first spring member, and a gripping device attached to the elastic member and configured to grip the air tank. The gripping device has a first gripping member having a first gripping space to embrace at least a portion of the air tank. The first gripping member is configured such that when the at least portion of the air tank is fitted to the first gripping space, a first gripping force is applied to the least portion of air tank.

The utility model relates to a dynamic vibration absorber for an OCT (optical coherence tomography) appearance detection mechanism for a lens, which is provided with a vibration absorption base and a mass block, a vibration absorption screw is erected on the vibration absorption base, a through groove is arranged on the mass block, the mass block is slidably arranged on the vibration absorption base through matching of the vibration absorption screw and the through groove, and vibration absorption gaskets are arranged on two sides of the mass block. Each vibration absorption gasket is arranged on the vibration absorption screw rod in a sleeving manner, a vibration absorption spring is arranged between each vibration absorption gasket and the mass block, each vibration absorption spring is arranged on the vibration absorption screw rod in a sleeving manner, the two ends of each vibration absorption spring act on the mass block and the vibration absorption gasket respectively, and an adjusting nut is arranged on the vibration absorption screw rod. The two vibration absorption gaskets are arranged between the two oppositely-arranged adjusting nuts, the vibration absorption gaskets are arranged between the vibration absorption springs and the adjusting nuts on the corresponding sides, and after the mass block is vibrated on the vibration absorption base, the vibration absorption springs reversely apply force to the mass block through continuous force application of the vibration absorption springs. The device is ingenious in structure, convenient and practical.

The utility model discloses a driving shaft dynamic vibration absorber which comprises a dynamic vibration absorber body, a mass block and an installation cover, a driving shaft body is arranged in the dynamic vibration absorber body in a penetrating mode, a positioning column is integrally and fixedly installed on the outer side of the right end of the dynamic vibration absorber body, and a first fixing bolt is arranged in the positioning column in a penetrating mode; and the mass block is installed at the outer side end of the positioning column, an extension plate is integrally and fixedly installed on the outer surface of the mass block, and a second fixing bolt is arranged in the extension plate in a penetrating mode. The utility model belongs to the technical field of dynamic vibration absorbers, and aims at solving the problems that in the prior art, the adjustability of the vibration frequency is limited, adjustment is complex, and meanwhile the protection effect is poor. The technical effects are that the adjustability of the vibration frequency is improved, and the phenomenon that the extension plate and the second fixing bolt cannot be disassembled due to external corrosion can be effectively avoided.

The invention provides a dynamic vibration absorber suitable for a complex vibration environment and a vibration absorption method, and the dynamic vibration absorber suitable for the complex vibration environment comprises a base which is provided with a boss; a first cantilever beam type spring piece and a second cantilever beam type spring piece are arranged on the two sides of the boss in an outward extending mode. A first mass block assembly is arranged at the end, away from the boss, of the first cantilever beam type spring piece, and a second mass block assembly is arranged at the end, away from the boss, of the second cantilever beam type spring piece. Compared with the prior art, at least one technical scheme adopted by the invention can achieve the beneficial effects that one dynamic vibration absorber can realize structural vibration reduction in a plurality of excitation frequency environments, and the models and the number of the vibration absorbers are reduced, so that the development expenditure and the installation workload are reduced.

The utility model belongs to the technical field of dynamic vibration absorbers, and particularly relates to a double-layer damping dynamic vibration absorber based on a condensate pump, which comprises a water pump assembly and a damping vibration absorption assembly, the water pump assembly comprises a water pump body and a water pump end cover, the water pump end cover is arranged on the water pump body, and the damping vibration absorption assembly is arranged on the water pump body. The damping vibration absorption assembly is arranged on the water pump end cover, the damping vibration absorption assembly comprises a base, a damping vibration attenuation mechanism and a balance weight part, the base is detachably arranged on the water pump end cover, the damping vibration attenuation mechanism is arranged on the base, and the balance weight part is arranged on the damping vibration attenuation mechanism. Therefore, interface stress concentration caused by a traditional embedding process is avoided through the layered and stacked double-layer damping structure, local stress is effectively dispersed through coupling connection of the balance weight piece and the upper damping vibration attenuation component, broadband vibration suppression of the condensate pump is achieved, and meanwhile structural reliability and installation convenience are improved.

The application discloses a pipeline magnetic force damping dynamic vibration absorber, which comprises a shell, a clamp, a vibration absorbing mechanism and a magnetic force damping mechanism arranged in the shell, the vibration absorbing mechanism comprises a sliding rod fixed on the shell and a mass block slidingly arranged on the sliding rod, the magnetic force damping mechanism comprises a conductor plate arranged on the mass block and a magnet fixed on the shell, and the magnet is arranged correspondingly to the conductor plate. The material of the conductor plate is a metal with good conductivity, preferably copper. The pipeline magnetic force damping dynamic vibration absorber has the advantages that it does not need to be rooted in other structures except the pipeline, and has low requirement on installation space; and the magnetic force damping structure is a non-contact structure, so that the damping effect is not attenuated or the service life is not shortened due to friction and other factors, compared with other contact damping structures.

This invention belongs to the field of vibration absorption for nuclear power plant pipelines, specifically relating to a wide-frequency-range rubber spring dynamic vibration absorber for nuclear power pipeline vibration reduction. The absorber includes: a fixed frame and vibration-absorbing blocks. The fixed frame has a circular structure, with two sets of fixed frames arranged parallel and symmetrically. The vibration-absorbing blocks are located between the two sets of fixed frames, and a plurality of vibration-absorbing blocks are evenly distributed along the circumference of the fixed frames. Both ends of the vibration-absorbing blocks are detachably connected to the two sets of fixed frames, with a certain gap between the ends of the vibration-absorbing blocks and the fixed frames. The fixed frame is securely connected to the pipeline. The fixed frame clamps the pipeline, bears the vibration of the pipeline, and transmits the vibration to the vibration-absorbing blocks, which absorb the vibration and suppress the pipeline vibration. This invention's vibration absorber has a simple structure, is easy to assemble and disassemble, and can effectively suppress vibrations from all directions of the pipeline.

This invention relates to the field of intelligent manufacturing technology, and more particularly to a design method and system for a dynamic vibration absorber in the field of vibration control. The invention establishes a two-degree-of-freedom nonlinear dynamic vibration absorber system, and optimizes a passive mechanical network of biquadratic optimal form based on the linearized model fitted from this system model. Based on the system model combined with the passive mechanical network, a fractional-order integral sliding mode controller based on a disturbance observer is designed. The fractional-order switching disturbance observer can estimate and supplement various unknown factors in the system, and outputs the optimal control force through fractional-order integral sliding mode control. Finally, a semi-active capacitive control law is designed, and a suboptimal control force is obtained through force tracking to achieve vibration reduction control. This invention effectively improves the control accuracy of the dynamic vibration absorber.

The present invention discloses a multiple dynamic vibration absorber applied in an asymmetric rotor system and a design method thereof. The rotating shaft of the asymmetric rotor system has non-axisymmetric characteristics or the supporting structure has non-isotropic characteristics, and there are problems of excessive vibration and instability when passing through the critical speed and the 1 / 2 critical speed. The multiple dynamic vibration absorber is composed of an annular base and a plurality of cantilever beam oscillators, and is installed on the rotating shaft through rolling bearings. The multiple dynamic vibration absorber does not rotate with the asymmetric rotor system. The cantilever beam oscillators are equidistantly installed along the circumferential direction on the annular base, and the average value of their natural frequencies is close to the center frequency of the instability zone frequency band of the asymmetric rotor system. During the operation of the asymmetric rotor system, the cantilever beam oscillators absorb part of the vibration energy of the system. By optimizing the structural parameters of the multiple dynamic vibration absorber, the damping level of the system is greatly improved, the resonance amplitude at the critical speed of the system is reduced, and the instability phenomenon of the system is suppressed.

This invention discloses a method, apparatus, device, and medium for evaluating vibration absorption in a vehicle suspension system. The method includes: before installing a dynamic vibration absorber in the suspension system, acquiring a first vibration value detected at a second position point when a first position point in the suspension system vibrates; determining a first transmission curve based on the first vibration value; after installing the dynamic vibration absorber in the suspension system, acquiring a second vibration value detected at the second position point when the first position point vibrates; determining a second transmission curve based on the second vibration value; and evaluating the vibration absorption effect of the suspension system based on the first and second transmission curves to obtain an evaluation result. By using the transmission curve between the first and second position points of the suspension system to guide the design of the dynamic vibration absorber, the matching of the dynamic vibration absorber's operating frequency band with the problematic frequency band inside the vehicle is improved, thereby increasing the accuracy of determining the center frequency band of the dynamic vibration absorber and effectively improving the vibration absorption effect of the suspension system.

The invention discloses a chiral lattice sandwich structure with wide and low frequency vibration damping characteristics, which comprises a plurality of lattice sandwich units, each lattice sandwich unit comprises an upper panel, a lower panel and a dynamic vibration absorber, a plurality of chiral support columns are arranged between the upper panel and the lower panel, and the dynamic vibration absorber is arranged between the upper panel and the lower panel. The chiral supporting columns are obliquely arranged, the heads and the tails of the chiral supporting columns are connected with the upper-layer panel and the lower-layer panel respectively, a middle chiral crystal lattice core layer is defined by the chiral supporting columns, miniature chiral crystal lattices are arranged in the chiral crystal lattice core layer, and the dynamic vibration absorbers are fixedly connected to the miniature chiral crystal lattices. According to the invention, a dynamic coupling effect is realized, so that a broadband vibration attenuation effect is obtained.

A vibration absorption apparatus for a head-up display driving module is provided. The vibration absorption apparatus includes: a housing; a motor disposed on an end portion of the housing via a motor mount; a lead screw abutting against a central area of the housing, the lead screw extending from and coupled to the axis of rotation of the motor; a lead screw bracket to fix the lead screw; a link to lift or lower the lead screw based on a driving force of the motor; a flexible coupling to connect the axis of rotation of the motor and the lead screw; heterogeneous spring members coupled to the flexible coupling to isolate torsional vibrations of the flexible coupling; and a cantilever type dynamic vibration absorber disposed between the motor mount and the lead screw bracket, the cantilever type dynamic vibration absorber to absorb and damp vibration produced by the motor.

The utility model discloses a rear overhang traction arm with a dynamic vibration absorber, which comprises a rear overhang traction arm body (1), a first connecting end (2) is a U-shaped notch, a second connecting end (3) is provided with a rubber bushing (4), and the rubber bushing (4) is fixed on the second connecting end (3) through a bolt and nut assembly. The rear suspension traction arm is characterized in that a dynamic vibration absorber (5) is arranged at any position of the rear suspension traction arm body (1), the installation position of the dynamic vibration absorber (5) and the installation position of the rubber bushing (4) are located on the same plane, and the vibration absorption direction of the dynamic vibration absorber (5) is consistent with the height direction of the rear suspension traction arm body (1). According to the rear suspension traction arm, the dynamic vibration absorber is additionally arranged on the metal plate body, co-vibration energy of the traction arm is transferred to the dynamic vibration absorber, and vibration is absorbed.