813 results about "Vibration damper" patented technology

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 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 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.

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 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.

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 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.

The invention discloses a vibration reduction assembly and an extremely-low vibration reduction system for an extremely-low-temperature refrigeration platform. The vibration reduction assembly comprises a main frame. The active suppression platform is arranged above the main frame, reads a signal in real time through a sensor in the active suppression platform and feeds back the signal to an internal control unit, and the control unit sends an instruction to reversely adjust the compression amount of an internal spring so as to realize active vibration reduction; the rotary valve vibration reduction mounting seat is used for respectively fixing the rotary valve motor and the phase modulation air reservoir through a supporting plate and a fixed clamping block and realizing vibration reduction through a vibration reduction element arranged in the rotary valve vibration reduction mounting seat; a second vibration reduction body is arranged in the corrugated pipe assembly so as to reduce vibration in the vertical direction and the radial direction. According to the invention, the active suppression platform is arranged to actively eliminate vibration so as to reduce vibration or vibration transmission. The corrugated pipe is arranged above the active restraining platform, vertical vibration of the cold head of the refrigerating machine can be reduced, a plurality of second vibration reduction bodies are arranged on the periphery of the corrugated pipe body, and radial vibration of the cold head of the refrigerating machine can be reduced through the second vibration reduction bodies.

This invention discloses a vibration damper structure for overhead cables, comprising: a base; a clamping assembly mounted on the base for clamping overhead cables; a reinforcing assembly connected to the base; spacing adjustment assemblies respectively mounted on opposite sides of the reinforcing assembly; and a vibration damper body detachably connected to the end of the spacing adjustment assembly. The spacing adjustment assembly includes: an adjusting seat, two bearing rings mounted on opposite ends of the adjusting seat, a lead screw connected between the two bearing rings, a guide rod disposed within the adjusting seat, a slider seat meshing with the lead screw, and a positioning shaft tube fastened to the slider seat. The guide rod is located on one side of the lead screw and passes through the slider seat, and the vibration damper body is connected to the positioning shaft tube. The vibration damper structure for overhead cables implementing this invention allows for adjustment of the hammer spacing to adapt to the wind vibration resistance performance of cables of different diameters; it has a simple structure and a wide range of applications.

The invention relates to a vibration-damping apparatus (18) for a winding device (4) of a textile machine (1), which textile machine produces cross-wound packages (5), the vibration-damping apparatus being provided for reducing the vibrations that occur at the pivotably mounted package cradle (8) during the winding operation of the textile machine (1).According to the invention, in order to obtain a vibration-damping apparatus which is unproblematic both with regard to safety and with regard to contamination and which also always ensures a vibrationally relatively stable state of the package cradle, the vibration damper is in the form of a friction damper (20) having friction forces of different intensity depending on the working direction, the friction forces acting as the cross-wound package (5) lifts off during the winding operation being greater than the friction forces acting during the return of the cross-wound package (5).

The invention relates to the technical field of commercial vehicles, in particular to a vehicle shock absorber damping force dynamic adjustment method based on road feature recognition, and introduces a machine vision technology to detect road features in the vehicle driving direction. Through the machine vision system, the vehicle can identify the unevenness features of the road in advance, including the feature types and the spatial positions thereof, and feed back the information to the control system in real time. And the control system adjusts the damping force of the shock absorber in advance according to the previewed road characteristics. Specifically, training and optimization are carried out based on an improved YOLOV8 model, road feature classification information and detection frame position information from the trained model are received in real time through a semi-active controller, and a preset control algorithm is executed according to information returned by the model to adjust the damping force of the shock absorber in advance. According to the method, preview control is carried out in the semi-active suspension by recognizing road excitation, and the problem that the vibration reduction effect of the semi-active suspension is not ideal due to response time lag of the vibration damper is solved.

The invention belongs to the technical field of wire maintenance, and discloses a fixing device for preventing a stockbridge damper from shifting and an unmanned aerial vehicle installation system.The fixing device comprises a clamping assembly, a locking assembly, a hanging and triggering assembly and a hanging frame; the clamping assembly comprises an arc-shaped clamping block connected to the hanging frame in a sliding mode and a lead screw rotationally connected to the hanging frame, a nut is fixedly installed in a center hole of the arc-shaped clamping block, the nut is matched with an external thread of the lead screw, and the arc-shaped clamping block is driven to be close to or away from the hanging frame by rotating the lead screw; through the synergistic effect of the clamping assembly, the locking assembly and the hooking and triggering assembly, full-process automation of the device from carrying, positioning, triggering to final locking is achieved. After the unmanned aerial vehicle transports the device to a designated position, the locking assembly can be triggered to be released through a remote instruction, then the clamping assembly is driven to automatically and firmly hold the wire, and a lead screw nut mechanism of the device has the inherent self-locking characteristic and can effectively resist long-term vibration.

This invention relates to the field of automotive shock absorbers and discloses an oil-gas separation shock absorber, comprising a sliding sleeve and a cylinder. The cylinder has a floating piston inside, which is slidably mounted inside the cylinder. A valve body includes a compression valve and an extension valve. A sealing plug is connected to the top of the cylinder. A fixing rod has its top fixedly connected to the top of the sliding sleeve, and its bottom connected to the valve body. This invention, by incorporating an expansion member, allows the sealing ring to expand outwards, resulting in a tighter contact between the sealing ring and the inner wall of the cylinder, thereby improving sealing performance and reducing the risk of oil or nitrogen leakage, ensuring shock absorption performance. A circulation device allows coolant to flow inside the heat dissipation pipe, carrying away heat from the oil in the spiral storage chamber, achieving efficient heat dissipation.

This scheme provides an evaluation method for the mechanical model of magnetorheological vibration damper based on the fuzzy comprehensive evaluation method, including: S1: determining indicators; S2: determining the objective weights of secondary indicators; S3: calculating the comprehensive score of the primary indicators based on the objective weights of the secondary indicators and the original sample data values; S4: determining the subjective weights of the primary indicators based on the hierarchical analysis method, and obtaining a quantitative score of the mechanical model of magnetorheological vibration damper based on the weighted comprehensive score of the primary indicators based on the subjective weights. The coupling system of the fuzzy comprehensive evaluation method and the hierarchical analysis method is applied to the evaluation of the mechanical model of magnetorheological vibration damper to address the shortcomings of the existing evaluation methods in terms of systematicity and objectivity.

The article to which this design relates is a vibration-proof bracket. As shown in the reference diagram showing the usage state, the article is opened in the ceiling and the connectors are attached to the hanging bolts that support the suspended object. The suspended object can be, for example, an air conditioner, piping, electrical equipment, etc.

The present invention discloses a vertically stacked three-stage vibration damper based on metal rubber. The damper comprises an upper plate, a lower plate, an inner cavity, a central screw, and a three-stage vibration damping mechanism. The upper plate and lower plate are mounted at the upper and lower portions of the inner cavity, respectively. The central screw extends through the upper plate and into the inner cavity. The three-stage vibration damping mechanism comprises a first-stage vibration damping mechanism, a second-stage vibration damping mechanism, and a third-stage vibration damping mechanism. The present invention employs a three-stage stacked vibration damping method, resolving the problem of existing vibration dampers being unable to maintain good vibration damping performance in harsh environments while also providing a good position-limiting and buffering effect.

This invention belongs to the field of vibration reduction technology for nuclear power plant fans, specifically relating to a high-damping integrated vibration reduction foundation suitable for nuclear power fan fans. It consists of a steel frame connected to a height-adjustable vibration damper. The steel frame is welded from high-damping composite channel steel, which is composed of conventional channel steel and particulate dampers. The height-adjustable vibration damper uses the housing as the installation reference. An upper annular metal rubber is inserted into its inner cavity, followed by the upper end of the mandrel being inserted into the inner hole of the upper annular metal rubber. Then, a lower annular metal rubber is inserted into the inner cavity of the housing, with its upper end face against the mandrel. A base is then placed on top, and rivets are used to connect the base and housing through four mounting holes. Finally, the internal thread of the mounting block is screwed into the external thread at the upper end of the mandrel. This invention effectively reduces the vibration level of the fan, ensuring safe operation of the fan.

The invention discloses a vibration reduction valve system structure capable of automatically offsetting temperature influence. The vibration reduction valve system structure comprises a temperature self-adaption valve plate pressing device. The temperature self-adaptive valve plate pressing device comprises a base, and the base is matched with the supporting connecting piece through an assembly hole in the base and has axial limiting relative to the supporting connecting piece. An annular groove is formed in the base, and an annular sliding pressing block is arranged in the groove; the sliding pressing block is in sliding fit with the groove wall of the groove and is sealed through a sealing ring, so that a self-adaptive pressure cavity is formed; the self-adaptive pressure cavity is filled with compressed gas; the sliding pressing block abuts against the valve plate to apply pre-tightening force to the valve plate. According to the vibration reduction valve system structure, the influence of damping force reduction caused by temperature rise and hydraulic oil density reduction on the performance of the vibration damper can be offset, and the influence of damping force increase caused by temperature reduction and hydraulic oil density rise on the performance of the vibration damper can be offset. Correspondingly, the invention further provides a temperature self-adaptive shock absorber, and the performance of the temperature self-adaptive shock absorber is slightly influenced by the temperature.

Torsional vibration damper comprising a disk-shaped primary mass (2) to be coupled to an input element, a secondary mass (6) to be coupled to an output element, and a first spring damper arrangement (10) coupled to the primary mass (2) and the secondary mass (6), comprising several arc springs (11) against which the primary mass (2) and the secondary mass (6) are rotatable relative to each other, wherein the secondary mass (6) has an annular spring channel (9) in which the arc springs (11) are received, wherein a second spring damper arrangement (16) comprising several compression springs (18) is connected downstream of the first spring damper arrangement (10) of the secondary mass (6).

The utility model relates to a horizontal compressor shock absorber installation structure and a railway vehicle air conditioning unit, which comprise a shock absorber, an installation rib, a bolt and a flange nut, the shock absorber is sleeved on the bolt, the installation rib is welded on a chassis and an installation beam of the air conditioning unit, a bolt hole is arranged on the installation rib, and the flange nut is sleeved on the bolt. The flange nuts are welded to the lower surfaces of the installation ribs, and the bolts penetrate through the shock absorber and the bolt holes from top to bottom to be in threaded connection with the flange nuts. According to the utility model, the operation of replacing the shock absorber of the compressor is simple and convenient, the maintainability is improved, and under the condition that a refrigerating system is not damaged, the quick replacement of the shock absorber of the compressor is realized, the waste of a refrigerant is reduced, the maintenance workload is also reduced, the maintenance efficiency is improved, and the maintenance cost is reduced.

This invention discloses a multifunctional construction platform for concrete towers of wind turbines, comprising a support beam (3), a platform body (4), fixed connectors (61), vibration damping connectors (62), and vibration dampers (7). The support beam is a grid structure composed of several beams connected together, with several connection ends formed at the edges of the support beam. One end of each fixed connector is connected to a connection end, and one end of each vibration damping connector is connected to a connection end via a vibration damper. Fixed connectors and vibration damping connectors are arranged at both ends of each beam. The other ends of the fixed connectors and the other ends of the vibration damping connectors are installed on the wall of the concrete tower (1). The platform body is installed on the support beam, so that the platform body is horizontally erected inside the concrete tower. This invention can reduce the vibration impact of wind turbine operation on the concrete tower, and also ensures the balance and stability of the construction platform, improving the safety of the concrete tower and the construction platform.

Provided is a vertical type high-efficiency comprehensive testing fixture for a shock absorber. The problem that the size detection of the current shock absorber wastes time and labor is mainly solved. The containing groove (11) is formed in the upper end face of the base and used for containing the bottom of a workpiece; the height gauge (2) is arranged on the base; the support (3) is arranged on the base, a liftable clamping seat (31) is arranged on the support, and the clamping seat is used for clamping the circumferential outer wall of the shock absorber; and the positioning pin (4) is inserted and matched with a mounting hole (91) of the workpiece and comprises a plane (41) which is in contact with the top end surface of the base. The utility model provides a vertical type high-efficiency comprehensive testing fixture for a shock absorber, which can conveniently detect the testing fixture, and is high-efficiency, accurate, low in manufacturing cost and low in skill requirement for operators.

The invention relates to a mobile laser scanning microscope (100) comprising: a chassis (10) with rollers (12), an optical table (30) connected to the chassis (10) via a vibration damper (20), an upper optical box (40) containing a scanning head (42) with acousto-optical deflectors, a pillar (60) connecting the upper optical box (40) to the optical table (30) and holding it at a distance above therefrom, a stage (31) arranged on the optical table (30), a microscope module (32) arranged above the stage (31) and comprising a microscope objective (33) optically coupled to the scanning head (42) and at least one detector (75a, 75b), at least one laser (35) arranged on the optical table (30), an optical beam path (36) guiding a beam of the at least one laser (35) from the at least one laser (35) through the upper optical box (40) to the objective (33), compartments (17) connected to the chassis (10) below the optical table (30) and housing power supplies (15) and control systems (16) of the microscope (100), and a light barrier system (50) having a cover (52) covering units arranged on the optical table (30).