671 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.

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.

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.

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 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.

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.

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).

The invention relates to the technical field of damping structures, and discloses a shape memory polymer filled multistable negative Poisson's ratio structure damper which comprises a plurality of multistable structure shells which are of a bilateral symmetry structure and made of negative Poisson's ratio materials, cavities are defined in the multistable structure shells, and the multistable structure shells are arranged in an array mode; the shape memory polymer is arranged in the cavity, and the shape memory polymer is made of a shape memory negative Poisson's ratio polymer. The cavity is formed in the multi-stable-state structure shell, the cavity is filled with the shape memory polymer made of the shape memory negative Poisson's ratio polymer, the overall strength and rigidity of the structure can be improved while the negative Poisson's ratio characteristic is kept, and therefore the application range of the negative Poisson's ratio material in the vibration reduction field is expanded. The addition of the shape memory polymer is beneficial to improving the deformation capacity of the whole structure during bearing, and meanwhile, the structure can be recovered to the initial shape after being unloaded based on the recovery capacity of the shape memory polymer.

The present invention relates to a storage and recovery system (100) for bulk material (102). The system (100) includes a bulk material holding space (104) having a bottom (108) with a discharge port (106). The bottom (108) includes an inclined support plate (112) for supporting the bulk material (102) and for assisting gravity-induced feeding of the bulk material (102) toward the discharge port (106). The support plate (112) is supported by a support structure (114) in a free-floating manner. One or more vibrators (116) are connected to the support plate (112) and configured to transmit vibrational energy to the support plate (112) to induce vibrational motion of the support plate (112). An intermediate layer (122) having vibration-insulating properties is disposed between the support structure (114) and the support plate (112). The support structure (114) is damped to the main structure (150) by at least one structural vibration damper (126). An abutment vibration damper (130) is disposed between the support plate (112) and the support structure (114) and configured to prevent downward translation of the support plate (112) toward the discharge port (106). A vessel (200), onshore storage (300), and hopper (400) including the system (100) are also provided. Use of the system (100) for handling bulk material (102) is also provided.

The invention relates to a slide element (1) for a damper valve (10), wherein the slide element (1) has a control section (2) configured to extend displaceably in a control channel (11) of the damper valve (10) transversely to a flow direction (S) of a damping medium in order to adjust a flow cross-section of the damper valve (10), wherein the slide element (1) has a mounting section (3) arranged on a side of the slide element (1) opposite the control section (2), wherein the mounting section (3) can be attached to an actuating means (12) of the damper valve (10) for displacing the slide element (1) in a direction transverse to the flow direction (S), and wherein a connecting section (4) is formed between the control section (2) and the mounting section (3).which has a lower stiffness against deformation in the flow direction (S) than the control section (2) and the fastening section (3).

The invention relates to a support (100) for a compressor (210) of a refrigerant circuit (200), which is configured to be rigidly mechanically coupled to the compressor (210) and to at least one heat exchanger (220), and which has one or more mounting points (120, 140) configured to mechanically attach the support (100) to an external frame, wherein a vibration damper (130) is integrated into each of the mounting points (120, 140). Furthermore, a refrigerant circuit (200) with such a support (100) and a machine, in particular a vehicle, with such a refrigerant circuit (200) are proposed.

The invention relates to a torsional vibration damper (1) or a torsional vibration absorber comprising a rotating system having a primary mass arranged on a rotatable shaft, for example on an engine, in particular an internal combustion engine crankshaft, preferably non-rotatably fixed, and a secondary mass movable relative to the primary mass, and a component for vibration damping and / or vibration reduction of the relative movement between the primary mass and the secondary mass. The component for vibration damping and / or vibration reduction of the relative movement between the primary mass and the secondary mass has at least one pressure accumulator (15, 15'; 22, 22') within the rotating system of the torsional vibration damper (1) or the torsional vibration absorber. The invention also provides a method for damping torsional vibrations of an internal combustion engine crankshaft (2) with a torsional vibration damper (1) or a torsional vibration absorber.

This invention discloses an auxiliary flow channel type asymmetric magnetorheological vibration damper with large tension and small compression, comprising a cylinder, a working piston, a floating piston, and a guide assembly. The floating piston divides the interior of the cylinder into a magnetorheological fluid region and a high-pressure gas chamber region, with the working piston located within the magnetorheological fluid region. The working piston consists of an upper cover, a piston core, a piston rod, a lower end gasket, a valve plate, a spring, and a limiting block. The upper cover has a guide band and four evenly arranged through slots of different sizes on both the inner and outer sides. The piston core contains an excitation coil and four auxiliary flow channel elongated holes. The valve plate and spring are sequentially fitted onto the upper end of the piston rod and are axially limited by the limiting block. The guide assembly is installed at the end of the magnetorheological fluid region, with the piston rod passing through it. The assembly consists of a guide, a buffer block, and a guide upper cover. A lower oil seal, a sliding bearing, and an upper oil seal are sequentially arranged inside the guide. The floating piston end face is equipped with a guide band and a sealing ring, and a gas seat is provided on the high-pressure gas chamber side of the cylinder. This vibration damper can meet the asymmetric output requirements of large tension and small compression, and its reasonable structural layout reduces the overall installation difficulty.

The utility model relates to the technical field of titanium concentrate, in particular to a vibration damper suitable for a titanium concentrate vibrating screen, which comprises a plurality of duplex vibration damping units connected with the vibrating screen. Each duplex vibration reduction unit comprises a connecting block arranged on the vibrating screen, a connecting rod and a connecting rod, the first damping spring is arranged at the bottom of the connecting block; the vibration reduction seat is arranged at the bottom of the first damping spring and is connected with the screen body frame; according to the multi-stage vibration reduction screen, the vibration reduction seats are arranged on the screen body frame, the first damping springs are arranged on the vibration reduction seats, and the first damping springs and the vibration reduction seats are matched with each other to achieve multi-stage vibration reduction, so that a vibration energy transmission path is blocked, and structural fatigue and resonance risks are reduced.

A torsional vibration damper comprising a primary mass (2) to be coupled to an input element, a secondary mass (6) to be coupled to an output element, and a spring damper arrangement (10) coupled to the disk-shaped 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, and wherein at least one elastic vibration damper device (22, 26) is provided on the primary mass (2). The arrangement is characterized in that the secondary mass (6) has a disk-shaped flange section (7) which transitions into the spring channel (9) at its outer circumference and to which a hub flange (17), via which the connection to the output element is made, is attached.

The utility model provides a generator one-way coupling shock absorber suitable for high torque impact, which comprises a pivot, a belt wheel, a vibration isolation spring, an adaptive metal block and a plastic retainer, the pivot is coaxially arranged in the belt wheel, a bearing is arranged at one end of the pivot and rotatably supported between the pivot and the belt wheel, and the plastic retainer is arranged on the bearing. The plastic retainer is arranged on the inner side of the bearing, the outer ring of the plastic retainer is in interference fit with the inner wall of the belt wheel, a spigot is formed in the end face of the side, opposite to the bearing, of the plastic retainer, the adaptive metal block is arranged at the end of the spigot, the pivot is sleeved with the vibration isolation spring, and the end of the vibration isolation spring abuts against the adaptive metal block. According to the structure, an adaptive metal block structure is additionally arranged between the contact surfaces of the vibration isolation spring and the plastic retainer, so that the stress concentration condition borne by the retainer surface of the plastic clutch is reduced, the impact resistance of the retainer is improved, the service life of the damping belt wheel is prolonged, and the failure of the damping belt wheel is reduced.

The invention relates to the technical field of rail transit metal rubber shock absorber recycling and remanufacturing, in particular to a method for heating and recycling a metal framework in a pressurized state, which comprises the following steps: S1, a metal rubber composite shock absorber to be treated is mounted on a recycling tool, and the recycling tool comprises a heating device; s2, vertical pressure or axial torsional force is applied to a metal core shaft of the to-be-treated metal-rubber composite shock absorber through a pressurizing rod of the recovery tool, and meanwhile, a heating device is started, so that a metal framework of the metal-rubber composite shock absorber is stripped from a rubber body; and S3, glue cleaning operation is conducted on the surface of the metal framework, and glue cleaning operation is conducted on the recovery tool. According to the method for recycling the metal framework in the scheme, heating can be conducted while pressurizing is conducted, and the stripping efficiency of rubber and the metal framework can be improved.