1136 results about "Vibration damper" patented technology

The invention discloses a multi-parameter fusion analysis method for fault diagnosis of an automobile shock absorber, and relates to the technical field of shock absorber analys.The method comprises the steps that a vehicle key point position set is obtained, and a sensor set is arranged to obtain a vehicle work sensing module; a vehicle working multi-sensing data flow is monitored and obtained, and a vibration damper working characteristic parameter set is obtained; optimizing to obtain a target data fusion algorithm, and obtaining working state fusion characteristic parameters of the shock absorber; carrying out matching degree calculation on the fusion characteristic parameters of the working state of the shock absorber; and carrying out fault judgment analysis on the dynamic matching degree of the shock absorber, determining fault diagnosis information of the shock absorber, and carrying out fault feedback optimization. The technical problems that the condition of the shock absorber is difficult to comprehensively and accurately detect and the fault part cannot be accurately and rapidly diagnosed and positioned in the existing shock absorber fault diagnosis parameter analysis, so that the comprehensiveness and reliability of the fault diagnosis of the automobile shock absorber are insufficient are solved, and the technical effects of improving the fault diagnosis efficiency and accuracy and the performance of the shock absorber are achieved.

The invention relates to a shock absorber and a shock absorption system, and belongs to the technical field of precise shock absorption. The shock absorber comprises a base, a top plate, a piston and a supporting piece, a cavity is formed in the side, facing the top plate, of the base, the piston is connected with the base in the cavity in the mode that the piston can move in the depth direction of the cavity, the piston and the cavity are sealed to form a sealed cavity, the piston is connected with the top plate through the supporting piece, and therefore the pneumatic assembly with the vertical vibration reduction function is integrated in the vibration damper. The air cavity and the piston of the pneumatic assembly are both arranged at the bottom of the shock absorber, so that the air cavity and the piston are prevented from occupying the space between the base and the top plate in the shock absorber, and due to the fact that the area of the area, where the air cavity can be arranged, of the shock absorber base is larger, the shock absorber base can be more compact under the condition that the thickness of the base is not increased or slightly increased. The air cavity and the piston are arranged in the shock absorber base, so that the device integration density can be improved, the space can be compact, and miniaturization and multi-functionalization of the shock absorber are facilitated.

The invention provides a multi-task-based power transmission line stockbridge damper defect detection method, which comprises the following steps: acquiring an original power transmission line stockbridge damper image, and generating a data sample close to a real fault sample; a multi-task detection network model is established, a classification loss function and a segmentation loss function are constructed for the multi-task detection network model, and the established multi-task detection network model comprises a shared feature layer, classification branches and segmentation branches; based on a data sample, training the multi-task detection network model by adopting an alternate training mode to obtain a trained multi-task detection network model, and in the training process, adaptively adjusting weight parameters by adopting an adaptive dynamic weighting strategy; and inputting a to-be-detected image of the vibration damper of the power transmission line into the trained multi-task detection network model to obtain segmentation positioning and defect detection results of the vibration damper of the power transmission line. According to the invention, the problem of poor robustness and detection performance in the prior art can be solved.

The invention relates to a pre-twisted type anti-abrasion and anti-vibration hammer. The pre-twisted vibration damper solves the problem that a ground wire is abraded due to insufficient grip strength of a pre-twisted wire of a pre-twisted vibration damper in the prior art. The wire clamp comprises a wire clamp body, the upper end of the wire clamp body is movably and rotatably connected with a wire clamp cover plate through a hinge pin shaft, an annular clamping channel is formed between the wire clamp body and the wire clamp cover plate, and a screwing and jacking structure extending towards the interior of the annular clamping channel is arranged on the wire clamp body and the wire clamp cover plate in a penetrating mode. A plug-in type connecting assembly is arranged between the wire clamp body and the wire clamp cover plate and located on the circumferential inner side of the annular clamping channel, the wire clamp body and the wire clamp cover plate are connected through an eyelet bolt structure and located on the lower side of the annular clamping channel, and a movable positioning mechanism used for rotationally positioning the eyelet bolt structure is arranged on the wire clamp body in a penetrating mode. The grounding wire pressing device has the advantages that a pressing gap is effectively eliminated while the grounding wire is pressed, friction caused by relative movement is reduced, movement allowance is provided, and damage caused by the fact that rigid pressing is affected by strong wind is avoided.

A portable supporting stand for supporting a portable metrology device, such as a laser tracker device, at a predefined height includes at least one leg having an elongated member, where, in a deployed state, the portable supporting stand is a substantially rigid support stand that is arranged to substantially rigidly support the portable metrology device on a floor surface. The portable supporting stand also includes a vibration damper unit for reducing vibrations of the portable supporting stand.

The invention belongs to the technical field of shock absorption, and discloses a shock absorber. According to the shock absorber, the temperature change of a shock absorber medium is monitored in real time through the detection piece, and the distance between the one-way valve element and the fastening plug is automatically adjusted through the driving assembly, so that the damping force of the shock absorber can be adaptively adjusted along with the temperature change of the medium. When the viscosity is reduced due to the rising of the medium temperature, the gap between the one-way valve element and the fastening plug is automatically reduced, and the damping force is increased to maintain the vibration reduction performance; when the viscosity is increased due to reduction of the medium temperature, the gap between the one-way valve element and the fastening plug is automatically enlarged, and the situation that damping force is too large, and vibration reduction comfort is affected is avoided. According to the automatic adjusting mechanism, the problem of damping force fluctuation caused by temperature change of a traditional shock absorber is effectively solved, and the stable shock absorption effect of a vehicle can be kept at different environment temperatures.

The present invention relates to a vibration damper. The vibration damper comprises a spoke spring damper, wherein the spoke spring damper includes a central part, several spoke springs, and an outer ring part, the outer ring part radially surrounding the central part coaxially, the several spoke springs being arranged radially between the outer ring part and the central part and spaced apart from one another in the circumferential direction, the several spoke springs being elastically deformable and thereby allowing rotation of the outer ring part relative to the central part. The vibration damper further comprises a cover plate, the cover plate being fixed to the axial side of the central part and being rotatably in contact with the outer ring part, either directly or indirectly, so that when the outer ring part rotates relative to the central part, the cover plate can come into direct or indirect frictional contact with the outer ring part.The vibration damper of the present invention exhibits an improved damping effect.

The invention discloses a damping-controllable low-impact inerter vibration reduction device and a control method, the damping-controllable low-impact inerter vibration reduction device comprises a low-impact inerter, a shell, a ball screw device and a controllable electromagnetic damper, the sudden change working condition of instantaneous reversing of a traditional inerter often induces obvious impact, and then the vibration reduction performance is deteriorated. Therefore, the invention provides the double-flywheel inerter structure with different rotating directions, and the double flywheels work independently, so that the problem that large impact is generated due to sudden change of reversing is effectively solved. Besides, the controllable electromagnetic damper and the low-impact inerter are integrally designed, the inerter overcomes the defect that the damper cannot change the inherent frequency of a system and can provide large inerter, a control method is provided, the controllable electromagnetic damper can be adjusted to output expected electromagnetic damping force according to the needed ideal torque, and the electromagnetic damping force can be adjusted to be larger than that of the low-impact inerter. Therefore, the vibration damping device can obtain more excellent vibration damping performance.

The invention provides a motor assembly and an air conditioner, and the motor assembly comprises a motor body, a support, and a vibration reduction part. Mounting holes are respectively formed in two side walls of the bracket; the two end faces of the motor body are each provided with a connecting ring groove, one end of each vibration reduction piece is installed in the corresponding connecting ring groove, the other end of each vibration reduction piece extends in the direction away from the end face of the motor body, and the vibration reduction pieces are clamped in the installation holes so that the motor body can be erected on the support. According to the invention, the vibration damping part can absorb and buffer vibration energy, reduce the transmission of vibration to the bracket and the surrounding structure, and reduce the use of bolts and nuts.

The invention discloses a vibration reduction balancing device based on a picking unmanned aerial vehicle. The vibration reduction balancing device comprises the unmanned aerial vehicle, an undercarriage, a picking mechanism, a balancing mechanism, an active vibration reduction mechanism and a passive vibration reduction mechanism. The passive vibration reduction mechanism comprises a balance vibration reduction supporting plate and a passive vibration reduction assembly which are arranged on the undercarriage. The picking mechanism comprises a picking rod, a shearing and clamping mechanism and a shearing and clamping driving mechanism; the active vibration reduction mechanism comprises a vibration reduction controller, a first vibration damper, a second vibration damper and an attitude sensor; the balance mechanism comprises a guide frame arranged on the balance vibration reduction supporting plate, a balancing weight arranged on the guide frame in a sliding mode and a balance driving mechanism arranged on the balance vibration reduction supporting plate. When the device is used for picking, the situation that the unmanned aerial vehicle cannot keep balance due to center-of-gravity shift of the unmanned aerial vehicle can be prevented, meanwhile, vibration generated by the unmanned aerial vehicle can be reduced, shaking in the picking process is reduced, and the harvesting stability is guaranteed.

The invention discloses a water-turbine generator set damping device which comprises a main structure module comprising a damping vibration attenuation unit composed of a first linear spring, a first linear damper and a first mass block; the NES module comprises a second mass block, a first cavity coaxial with the second mass block is arranged in the second mass block, and an eddy current damping unit is arranged in the first cavity; the U-shaped flexible hinge comprises a U-shaped damping cylinder and a U-shaped flexible hinge unit arranged in the damping cylinder, the flexible hinge unit comprises a plurality of unit double-shaft flexible hinges which are sequentially connected in series through a connecting base body, the damping cylinder is filled with magnetorheological fluid, and the two ends of the flexible hinge unit are connected with the damping cylinder respectively. By adopting the combination mode of the main structure module, the U-shaped flexible hinge and the NES module, the vibration frequency band of 10-200 Hz can be covered, broadband vibration reduction is achieved, the vibration amplitudes in different directions such as the axial direction and the radial direction can be absorbed, and the vibration reduction requirement of a water turbine generator set in the complex hydraulic environment can be met.

A vibration damper, comprising a spoke spring buffer (10), wherein the spoke spring buffer (10) comprises a center portion (11), a plurality of spoke springs (12) and an outer ring portion (13), the outer ring portion (13) coaxially surrounds the radial outer side of the center portion (11), the plurality of spoke springs (12) are respectively radially connected between the outer ring portion (13) and the center portion (11) and are circumferentially arranged at intervals, and the plurality of spoke springs (12) can elastically deform to allow the outer ring portion (13) to rotate relative to the center portion (11); and further comprising a cover plate (20), wherein the cover plate (20) is fixed on an axial side of the center portion (11), and can directly or indirectly abut against the outer ring portion (13) in a relative rotation manner, such that when the outer ring portion (13) rotates relative to the center portion (11), the cover plate (20) can be in direct or indirect frictional contact with the outer ring portion (13), thereby reducing the risk of deformation of the spoke spring buffer (10) toward an axial side.

A liquid discharge head includes a nozzle plate, multiple individual liquid chambers, a circulation common liquid chamber, a common liquid chamber, a vibration damper, a circulation bridge, and a common bridge. The nozzle plate has multiple nozzles from which a liquid is dischargeable in a liquid discharge direction. The multiple nozzles are arrayed in a nozzle array direction orthogonal to the liquid discharge direction. The vibration damper damps vibration of the liquid in the common liquid chamber. The circulation bridge is bridging the circulation common liquid chamber in an orthogonal direction orthogonal to the nozzle array direction and the liquid discharge direction. The common bridge is bridging the common liquid chamber in the orthogonal direction. The common bridge is disposed at the same position as the circulation bridge in the liquid discharge direction.

The invention discloses an overflow valve plate for a shock absorber, a flow regulating valve, the shock absorber and a vehicle. The overflow valve plate comprises a main body part, a flow regulating valve and a flow regulating valve, the guide part is connected to the main body part and protrudes out of at least one side of the main body part in the thickness direction, the guide part and the main body part jointly define a guide hole, and the overflow valve plate is suitable for being movably arranged on a supporting column in the shock absorber in a sleeving mode through the guide hole; and the overflow valve plate is guided by the supporting column to move in the axial direction of the shock absorber. According to the overflow valve plate provided by the embodiment of the invention, the guide part can be used for guiding the movement of the overflow valve plate, so that the inclination or shaking of the overflow valve plate during movement can be reduced, the movement of the overflow valve plate is more stable, and the stability of damping force adjustment of the shock absorber is favorably improved.

Mounting device (100) for a lithography system (1), comprising a first and a second component (102, 104), at least one vibration damping device (106) with at least one damping element (108) with which the second component (104) is attached to the first component (102) in a vibration-damping manner, and at least one flexible enclosure (112) by means of which the at least one damping element (108) is enclosed in a fluid-tight manner.

The utility model discloses an asphalt concrete recycled aggregate screening device, which relates to the technical field of asphalt concrete recycling equipment, aims to provide an asphalt concrete recycled aggregate screening device capable of discharging dust which is difficult to use, and is technically characterized in that a base is provided with a shock absorber, the shock absorber is provided with a hopper, and the hopper is provided with a hopper. A vibration damper is arranged on the base, a hopper is arranged on the vibration damper, a sieve plate is arranged below the hopper, the sieve plate is slidably connected to the side face of the vibration damper, a vibrator is arranged below the sieve plate, and a collecting box is arranged at the position, corresponding to the hopper, of the base. The air suction fan sucks the collected inward air outwards, the materials with large particle sizes fall down depending on the weight of the materials, and the dust with small particle sizes is discharged by the air suction fan, so that the purpose of automatically separating the dust during screening is achieved, and the dust is prevented from being mixed with the materials.

The utility model provides a shock absorber structure, which belongs to the technical field of automobile suspension systems and comprises a shock absorption upright column assembly. The vibration reduction stand column assembly comprises a single-barrel shell and a piston valve system, a working cylinder filled with vibration reduction oil is arranged in the single-barrel shell, the piston valve system is longitudinally and movably arranged in the working cylinder, the upper end of the piston valve system is connected with a piston rod extending out of the upper end of the single-barrel shell, and the piston valve system is provided with a throttling hole formed in the axial direction. The two ends of the throttling hole are provided with an adjustable compression valve plate and an adjustable rebuilt valve plate respectively, and the compression valve plate and the rebuilt valve plate are independently controlled through an electric control assembly. According to the shock absorber structure provided by the utility model, the compression valve plate and the rebuilt valve plate respectively realize independent work by means of the electric control assembly, the flowing speed of the shock absorption oil is quickly adjusted, the damping is controlled, the switching precision of the valve core is improved, the flow of the shock absorption oil is accurately controlled, and the continuous stepless adjustment of the shock absorption damping is realized.

The utility model discloses an integral vibration reduction structure of a shelter power station, a plurality of installation positions are arranged between the shelter power station and an installation platform, and each installation position is provided with a vibration reduction installation assembly; the vibration reduction mounting assembly comprises an adapter seat and a vibration damper, the adapter seat is fixed on the shelter power station, the vibration damper is fixed on the mounting platform, and the adapter seat and the vibration damper are connected together; the adapter comprises a top plate, a supporting column and a bottom plate which are fixedly connected in sequence from top to bottom, upper fixing holes are distributed in the periphery of the top plate, and upper fixing bolts fixedly connect the top plate with the shelter power station through the upper fixing holes; a lower center hole is formed in the center of the bottom plate, and the bottom plate and the upper end of the shock absorber are fixedly connected together through a middle fixing bolt via the lower center hole. The shock absorber is fixed to the bottom of the shelter power station through connection of the adapter, overall shock absorption of the shelter power station relative to an installation platform is achieved, and the influence of vibration generated when the power station works on other equipment is reduced to the maximum extent.

The invention relates to a flow adjusting device, a shock absorber and a vehicle, the flow adjusting device is arranged in a shell so as to at least divide the inner space of the shell into a first cavity and a second cavity, the flow adjusting device is provided with a first channel communicating with the first cavity and the second cavity, and the flow adjusting device comprises a valve seat, a valve rod and a valve rod, the valve element can move between a first position and a second position relative to the valve seat so as to adjust communication damping of the first channel; the valve plate is movably arranged between the valve seat and the valve core; the second elastic piece is used for applying elastic force to the valve plate, so that the valve plate has the tendency of abutting against the valve seat; the conduction piece is combined with the second elastic piece; the conduction piece is fixed relative to the valve seat. The flow adjusting device, the shock absorber and the vehicle have the beneficial effect that the flow adjusting flexibility is improved by arranging the valve plate capable of being independently adjusted between the valve seat and the valve element.

A vibration damper (200, 400, 500, 600, 700, 800) for damping a vibration of a component (202) of an optical system (100), comprising an at least partially closed housing (204), a damping mass (206), a throttle (208), at least one fluid chamber (210), and at least one spring element (212), wherein the at least one fluid chamber (212) is gas-tight or vacuum-tight to the outside by the at least partially closed housing (204) or by the at least partially closed housing (204) and the at least one spring element (212), and is filled with a fluid, wherein the spring element (212) is provided between the at least partially closed housing (204) and the damping mass (206) to dampen a movement of the damping mass (206) in the fluid chamber (210), and wherein the throttle (208) is configured to to generate fluid friction by which the movement of the damping mass (206) in the fluid chamber (210) is controlled.

A downhole tool for drilling a wellbore in a subterranean formation is described. The downhole tool includes a mounting block or chassis that experiences vibrations when drilling and at least one sensor or electronics assembly mechanically coupled to the mounting block or chassis by at least one vibration damper element.

An optical system (200) comprising a component (202), a support structure (204) for supporting the component (202), a vibration decoupling unit (206) for decoupling the component (202) from a vibration of the support structure (204), wherein the vibration decoupling unit (206) comprises a first spring element (208) connected to the component (202), a second spring element (210) connected to the support structure (204), and an intermediate mass (212) connected to the first spring element (208) and the second spring element (210), wherein a vibration damper (214) is connected in parallel to the first spring element (208) with the intermediate mass (212) and the component (202), or wherein a vibration damper (214) is connected in parallel to the second spring element (210) with the intermediate mass (212) and the support structure (204). is.

The invention belongs to the technical field of automobile shock absorber electromagnetic valves, and particularly relates to a hydraulic shock absorber electromagnetic valve for vehicle testing. A backflow channel communicated with an overflow cavity and a pressurizing cavity is arranged on a partition plate, a one-way valve leading to the pressurizing cavity is arranged on the backflow channel, so that oil flowing into the overflow cavity flows back into the pressurizing cavity to react on a pressurizing seat, and the oil in a main liquid cavity needs to have higher pressure when the pressurizing seat is pushed away from a main valve body; and the oil liquid pressure difference between the liquid inlet and the liquid outlet is further increased, the damping force of the oil liquid in the electromagnetic valve is increased, and the vibration reduction performance of the vibration damper is improved. Compared with an electromagnetic valve of a shock absorber in the prior art, when the power-on amount of the electromagnetic coil is certain, the electromagnetic valve provides larger damping force for the vehicle shock absorber; on the contrary, when the damping force needed by the vehicle shock absorber is fixed, the electromagnetic valve consumes less electric energy, the number of times of vehicle charging in the vehicle driving evaluation test process is reduced, the vehicle research and development test efficiency is improved, and electric energy is saved.

The present application belongs to the field of ultra-precision vibration reduction, and discloses a precision active vibration reducer compatible with a vacuum environment, comprising: a top plate, a bottom plate, and a vibration reduction unit, wherein the vibration reduction unit comprises a passive vibration reduction unit and an active vibration reduction unit connected in parallel, the active vibration reduction unit being arranged between the top plate and the bottom plate and being located outside the air spring, and the passive vibration reduction unit comprising a coaxial and vertically arranged air spring and a magnetic negative stiffness spring; the air spring comprises a main air chamber, the bottom of the main air chamber being connected to a metal sealing bellows, the top of the main air chamber being flexibly connected to the top plate; the bottom end of the metal sealing bellows being sealed and fixed to the bottom plate, so that the main air chamber becomes a vacuum-sealed cavity; the magnetic negative stiffness spring being arranged in the air spring, and its top end being fixed to the upper wall of the cavity, and its bottom end being flexibly connected to the bottom plate. The present application has excellent vibration isolation performance and good adaptability to a vacuum environment, and can meet the vibration isolation requirements of equipment such as EUV lithography machines.

A vibration damper for a vehicle comprises a damper tube filled with hydraulic fluid, a working piston which is connected to a piston rod and arranged within the damper tube so as to be movable back and forth, wherein the interior of the damper tube is divided by the working piston into a first working chamber and a second working chamber, a closure assembly which fluid-tightly closes off the damper tube at the piston rod side, a rebound stop arrangement having a rebound stop piston, which is mounted on the piston rod, and a rebound stop sleeve for receiving the rebound stop piston in the rebound stage, wherein the rebound stop piston separates off a rebound stage working chamber within the rebound stop sleeve, and wherein the rebound stop piston has a bypass channel for fluidically connecting the piston-rod-side working chamber to the rebound stage working chamber, wherein a valve device is arranged in the rebound stop piston hydraulically in parallel to the bypass channel.

A two-mass vibrating conveyor device is described, comprising a first mass which defines a vibrating conveyor path, a second mass which defines an equivalent vibrating conveyor path, motorization means operatively associated with the first mass and the second mass, elastic means which interconnect the first mass with the second mass, and damping means, each of the damping means being fixed at a stationary node of the elastic means. Furthermore, a vibration damper kit is described, belonging to damping means interconnecting a two-mass vibrating conveyor device to a fixed support structure.

The invention belongs to the technical field of vibration-proof hammers, and particularly relates to a self-adjusting vibration-proof hammer and a design method thereof.The self-adjusting vibration-proof hammer comprises a first clamping piece, the first clamping piece is clamped on a wire, and a vibration-proof mechanism is detachably connected to the lower portion of the first clamping piece. The first middle piece is installed below the first hanging piece, first steel strands are installed on the two sides of the first middle piece, first hammer bodies are installed at the ends, away from the first middle piece, of the first steel strands, first cavities are formed in the first hammer bodies, first partition plates are arranged in the first cavities, and first damping shells are placed above the first partition plates. A plurality of second steel strands are installed between the first damping shell and the inner side of the first cavity, particle damping is fully distributed in the first damping shell, damping is generated through friction between particles in the first damping shell, and therefore the vibration reduction effect is achieved, and vibration of the wire is reduced.

The invention discloses a lightweight deployment model edge configuration method based on damper multi-defect detection, and belongs to the technical field of intelligent power grid operation and maintenance, and the method comprises the following steps: S1, carrying out the scene similarity processing of a damper multi-defect data set and an edge equipment attribute data set, and obtaining a target scene sequence; s2, performing sparse training on the initial teacher models in sequence through the target scene sequence to obtain a target teacher model and a corresponding initial weight sequence; constructing an initial student model based on the initial weight sequence; s3, performing parameter adjustment on the initial student model through a knowledge distillation strategy in combination with the target teacher model to obtain a target student model; s4, the target student model adapts to the target scene sequence to obtain an edge configuration path, and the target student model is implanted into the corresponding edge device according to the edge configuration path; the objective of the invention is to improve the precision and efficiency of vibration damper defect detection and realize efficient deployment of a model on edge equipment at the same time.

The invention discloses a composite vibration reduction structure device which is applied to a low multi-layer modular steel building, the low multi-layer modular steel building comprises a top layer module and at least one lower layer module from top to bottom in the vertical direction, and the composite vibration reduction structure device comprises a tuned mass damper and a dynamic damper. The tuned mass damping assembly is arranged at a bottom plate of the top layer module and is used for relieving vibration caused by external traffic and wind load; and the dynamic dampers are arranged on the bottom plate C-shaped steel of the top layer module and the lower layer module and used for eliminating vibration generated by jumping and running, dual inhibition combining external vibration and internal vibration is achieved, and the anti-vibration and anti-disturbance capacity of the low multi-layer modular steel building can be comprehensively improved.

A vibration damper for a vehicle comprises a damper tube filled with hydraulic fluid, a working piston which is connected to a piston rod and which is arranged within the damper tube so as to be movable back and forth, wherein an interior of the damper tube is divided by the working piston into a first working chamber and a second working chamber, a rebound stop arrangement having an auxiliary piston, which concentrically surrounds the piston rod, and a sleeve-like rebound stop receptacle, which is mounted on the damper tube, for receiving the auxiliary piston in the rebound stage, wherein the auxiliary piston is mounted on the piston rod so as to be axially movable relative thereto, and the rebound stop arrangement has a spring element that is fastened to the auxiliary piston.