7868results about "Shock absorbers" patented technology

A hydraulic damper comprises a main tube, a piston assembly, a base valve assembly, and a compression stop assembly. The compression stop assembly includes an insert defining an inner chamber, and a sleeve displaceable along with the main piston assembly and configured to be slidably introduced inside the inner chamber. The sleeve has a diameter lower than the diameter of the main tube defining a first external flow channel between the sleeve and the main tube; the sleeve is attached to the piston assembly by a spring disposed within the sleeve; and the insert is provided with a plurality of axially-spaced holes and has an annular flange adjoining the inner wall of the main tube and separating the compression chamber from a second external flow channel between the radially external outlets of the holes and the base valve assembly.

The invention discloses a semi-submersible wave energy-wind energy integrated power generation platform and a damping regulation and control method of a damping regulation and control system of the semi-submersible wave energy-wind energy integrated power generation platform. The platform comprises a semi-submersible wind driven generator platform, a wind driven generator set, a wave energy power generation device, an energy storage system, a sea area detection system and the damping regulation and control system. The wave energy power generation devices are divided into two groups on the inner side and the outer side of the platform, each wave energy power generation device comprises a platform inner side wave energy power generation device and a platform outer side wave energy power generation device, and each wave energy power generation device comprises a swing arm floater, a universal hinge, a connecting arm and a damping adjusting module. The semi-submersible wind power generation device and the wave power generation device are combined, and offshore renewable resources are comprehensively utilized; the six-buoy design is adopted, buoyancy is dispersed, stability and safety are improved, and meanwhile space is provided for a wave power generation device; the floaters are symmetrically arranged in a hexagonal shape and carry a damping regulation and control system, and the whole structure is more easily stabilized by adjusting the damping of the floaters in all directions.

A suspension stabilizer and method are described which may be attached to a bike having front fork suspension to improve handling and reduce rider fatigue. The suspension stabilizer may include a counterweight, a spring assembly and a guide assembly. The spring assembly may be arranged to provide a spring force between the counterweight and the guide assembly to resist linear motion of the counterweight along a guide assembly axis. The counterweight and spring assembly may have a natural motion frequency of 3 to 15 Hertz and may be based on one or more characteristics of the front fork suspension.

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

The invention relates to the technical field of excavator bucket rods, and provides a bucket rod composite damping device and an excavator. The device comprises a shell composed of a base, an outer shell and a stress shell; the magneto-rheological buffer device is installed in the shell and composed of a lattice structure made of magneto-rheological elastomer materials and magneto-rheological fluid filled in gaps corresponding to the lattice structure, and a plurality of sound absorption holes are formed in each cell element wall in the lattice structure; the electromagnetic device is located in a containing cavity formed in the lattice structure and is composed of a magnetic core and an electromagnetic coil; the anti-vibration pad and the stress plate are embedded in the top of the shell and are in contact with the stress plate; the damping springs are arranged on the periphery of the shell and fixedly connected between the stress plate and the base; the vibration monitoring module is used for collecting vibration data of the bucket rod in real time and transmitting the vibration data to the intelligent control module, and the intelligent control module is used for adjusting the output magnetic field intensity of the electromagnetic coil according to the vibration data so as to adjust the viscosity of the magnetorheological fluid in real time.

The invention relates to the technical field of damping and shock absorption, in particular to a damping-adjustable composite shock absorption system for textile printing and dyeing equipment, which comprises a bottom plate and a top plate, a first shock absorption unit and a movable plate are mounted between the bottom plate and the top plate, and a first buffer spring is fixedly connected between the top plate and the movable plate; a second damping unit is installed between the movable plate and the bottom plate. During damping, vibration is buffered through telescopic deformation of a first buffer spring and a second buffer spring, oil liquid is pushed to flow in backflow oil pipes through vertical movement of a first piston rod, vibration energy is consumed through friction force between the oil liquid and the backflow oil pipes, and vibration of a machine body is restrained; the different backflow oil pipes are switched to be communicated with the oil storage cavity through the switching mechanism, the longer the backflow oil pipes are, the larger the on-way resistance when oil passes through the backflow oil pipes is, the higher the damping force is, and the damping device can be conveniently installed on textile printing and dyeing equipment with different vibration intensities for damping.

Active suspension actuator systems including an actuator with a compression volume and an extension volume are described. In some embodiments, the system includes one or more flow control devices in fluid communication with the compression volume and / or the extension volume of the actuator. In some instances, a flow control device may include a pressure balanced blow-off valve (PBOV). In some embodiments, the system includes a high capacity bidirectional base valve. In some embodiments, two or more flow control devices cooperate to, for example, damp low amplitude oscillations in the extension and / or compression volumes, and to allow the build-up of pump generated differential pressures while discharging rapid road induced differential pressure spikes between the extension and compression volumes.

An IFP is disclosed. The IFP includes a sealing channel formed axially about an outer diameter (OD), the sealing channel including at least two walls where the at least two walls of the sealing channel having a smaller OD than an inner diameter (ID) of a chamber and a channel is formed between the at least two walls. The IFP also includes an anti-tipping feature fixedly coupled with at least a portion of one wall of the sealing channel, the anti-tipping feature increasing a length of the IFP.

The invention relates to the technical field of vehicle control, in particular to a damping attenuation compensation method and device for a basic valve system of a continuous damping adjustable shock absorber, and the method comprises the steps: collecting the current mileage of a target vehicle, so as to determine whether the target vehicle carries out the self-inspection of the continuous damping adjustable shock absorber or not; under the condition that it is determined that self-inspection of the continuous damping adjustable shock absorber is conducted, the convergence time of a target vehicle passing through a preset deceleration ridge at different vehicle speeds is obtained; correcting a damping curve of the continuous damping adjustable controller of the target vehicle according to the convergence time at different vehicle speeds to obtain a target current of the continuous damping adjustable valve, comparing the target current with a current actual current of the continuous damping adjustable valve of the target vehicle to obtain a current deviation value, and outputting the current deviation value. And performing damping compensation on the continuous damping adjustable valve according to the current deviation value. Therefore, the problems that the damping force of the basic valve system is continuously attenuated along with the increase of the driving mileage of the vehicle, and stable driving and comfort of the vehicle are ensured by conventional control software are solved.

Elastomeric cushion members may include a plurality of interconnected buckling walls including an elastomeric material. The interconnected buckling walls may together define a plurality of columns. A perforated skin may extend between at least some of the plurality of interconnected buckling walls of at least some of the plurality of columns. Methods of making elastomeric cushion members may involve interconnecting a plurality of buckling walls including an elastomeric material. The interconnected buckling walls may together define a plurality of columns. A perforated skin may be positioned to extend between at least some of the plurality of interconnected buckling walls of at least some of the plurality of columns.

The present disclosure relates to a hydraulic damper comprising a main tube, a piston assembly, a base valve assembly, and at least one hydraulic compression stop assembly cooperating with a compression valve assembly, and comprising a pin disposed slidably within the piston rod and biased to project an activating tip towards the compression chamber. Said compression valve assembly comprises at least one deflectable or floating disc covering compression flow passages, and biased by a piston member slidable along said axis and normally abutting a retaining surface, and a pressure chamber having one surface defined by a surface of said piston member abutting said retaining surface, wherein said pin upon sliding inside the piston rod facilitates a flow of the working liquid from the compression chamber into said pressure chamber to increase biasing load on said at least one deflectable or floating disc.

The invention provides an active and passive combined type universal vibration isolation base and a vibration suppression method.The vibration isolation base comprises a base shell, a friction wall face, a transverse buffering mechanism, a high-strength elastomer and an axial buffering mechanism, the bottom of the base shell is connected with a vibration source, the friction wall face is installed on the inner wall of the base shell, and the transverse buffering mechanism abuts against the inner wall of the friction wall face; the vibration isolation object is connected to the top of the transverse buffering mechanism, the upper portion of the high-strength elastomer is elastically connected with the bottom of the transverse buffering mechanism, the lower portion of the high-strength elastomer is elastically connected with the top of the axial buffering mechanism, and the bottom of the axial buffering mechanism is connected to the bottom of the base shell. The transverse buffering mechanism and the axial buffering mechanism form a passive damping mechanism, and a magneto-rheological body adjusting structure arranged on the transverse buffering mechanism and a friction damping adjusting structure arranged on the friction wall face form an active adjusting mechanism. Through a passive damping mechanism and an active adjusting mechanism, efficient isolation of full-band vibration and multi-direction vibration can be achieved.

The invention relates to the field of electromagnetic valves, in particular to a valve body unit, an electromagnetic valve with the valve body unit and an electric control hydraulic shock absorber with the valve body unit. The hydraulic unit comprises a main valve assembly; the valve plate unit is arranged on the main valve assembly; the main valve assembly comprises a main valve shell. An oil channel is arranged on the main valve shell; the valve plate unit comprises a control valve plate; the control valve plate is arranged at the end part of the main valve shell; the control valve plate can deform; after the control valve plate is deformed, a communication channel is formed at the joint of the control valve plate and the main valve shell; through the arrangement of the control valve plate, after the current of the coil unit is cut off, overflow and discharge of hydraulic oil can be achieved through deformation of the control valve plate.

A damper assembly includes a housing having a tubular shape defining a main chamber extending along a center axis. A piston is movable along the center axis and divides the main chamber into a compression chamber and a rebound chamber. The piston includes a piston body defining a frequency-adaptive orifice (FAO) passage providing fluid communication between the compression chamber and the rebound chamber. The piston includes an FAO valve assembly having an FAO cover member configured to block fluid flow therethrough in response to application of a low-frequency excitation, and allowing fluid flow through the FAO passage in response to application of a high-frequency excitation. The FAO valve assembly also includes a tappet configured to translate relative to the piston body to bias the FAO cover member to selectively cover the FAO passage in response to the application of the low-frequency excitation.

The invention belongs to the technical field of automobile shock absorbers, and particularly relates to a shock absorber assembly structure for an active hydraulic suspension. Liquid in the rod cavity and the energy accumulator can be pumped into the rodless cavity by regulating and controlling the two-way pump to achieve active jacking of the hydraulic shock absorber, liquid in the rodless cavity is pumped into the energy accumulator and the rod cavity to enable the shock absorber to be actively compressed, and then the lifting end of the shock absorber drives a vehicle body to synchronously move to achieve active adjustment of the height of the vehicle body. In addition, a first channel, a second channel, a third channel, a fourth channel, a first electromagnetic one-way damping valve, a second one-way damping valve, a third electromagnetic one-way damping valve and a fourth one-way damping valve are arranged on the base, and the first electromagnetic one-way damping valve, the second one-way damping valve, the third electromagnetic one-way damping valve and the fourth one-way damping valve are used for controlling the oil flow direction and damping force. An oil flow channel and a flow direction of a traditional shock absorber are changed, a plurality of valve bodies are integrally assembled, and assembly of the valve bodies and the shock absorber is facilitated.

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, which controls whether a liquid inlet hole is directly communicated with a main liquid cavity or not through an elastic valve plate, and controls whether the main liquid cavity is communicated with a liquid outlet hole or not through a pressurizing seat. The pressure of oil entering the liquid inlet must overcome the tension of the elastic valve block, the supporting force of the elastic supporting piece can push the elastic valve block and the pressurizing base to move in the direction away from the main valve body, then the oil can flow back to the shock absorber through the liquid outlet hole, and the resistance borne by the oil in the electromagnetic valve is increased. And large damping force is provided for the vibration damper. By arranging the pressurizing cavity, when the electromagnetic coil is powered on, the pilot valve element blocks the overflow hole, oil in the overflow hole applies pressure to the pressurizing base, the oil does not easily push away the pressurizing base and the elastic valve block in the direction away from the main valve body, and oil resistance is further increased. The electromagnetic valve consumes less electric energy, and the vehicle research and development test efficiency is improved.

The invention relates to the technical field of intelligent control, and discloses a magneto-rheological damper regulation and control method and system based on machine learning, and the method comprises the following steps: S1, collecting the multi-dimensional state parameters of a system where a magneto-rheological damper is located in real time, the multi-dimensional state parameters comprising a vibration excitation parameter, a damper output parameter and an environment influence parameter; s2, a magneto-rheological damper dynamic characteristic mapping model based on deep learning is constructed, the mapping model takes multi-dimensional state parameters collected historically and corresponding control currents as training samples, and key characteristic weights are strengthened through an attention mechanism; and S3, based on the currently collected multi-dimensional state parameters. The time-varying hysteretic characteristics of the magnetorheological fluid are accurately modeled through an improved LSTM network fused with an attention mechanism, and a collaborative decision-making mechanism of reinforcement learning and model prediction control is combined, so that the problems of nonlinearity and time-varying characteristics which are difficult to deal with by a traditional control method are effectively solved.

The invention relates to a stroke-sectioned adjustable variable-damping inflatable hydraulic multi-damping device, and belongs to the technical field of vibration control. Comprising a roll shaft support assembly, a working cylinder assembly, a spring damping assembly and a piston mechanism assembly. The working cylinder assembly is mainly composed of a connecting pull ring, a main liquid storage cylinder, a limiting device, tightness adjusting threads, a piston rod connecting position, an auxiliary liquid storage cylinder and an air storage cylinder. The spring damping assembly is mainly composed of an adjusting spinning roller, a damping spring, a spinning roller damping gasket and a spring damping gasket. The piston mechanism assembly is composed of a piston rod and driving pistons on the two sides. The roller shaft support assembly is composed of a roller shaft fixing support and a pin. Through mechanism linkage of the liquid storage cylinder and the air storage cylinder, the inflatable hydraulic damping device is formed, and the purposes of damping changing and vibration reduction are achieved. The shock resistance and the transmission efficiency of a vibration reduction system can be improved, the energy consumption effect, the structural rigidity and the stability are enhanced, and the advantages of being simple in structure, convenient to implement and the like are achieved.

A shock absorber body assembly is disclosed that is includes a shock body formed of a cylinder defining a top cylinder end and a bottom cylinder end, and having a cylinder wall that surrounds a cylinder cavity. The cylinder wall is defined by a solid interior portion and a raised cooling pattern disposed on and proud of an exterior side of cylinder wall. The raised cooling pattern is comprised of one or more fins, wherein the raised cooling pattern is configured to provide for heat transfer from hydraulic fluid within the cavity of the cylinder cavity to an environment external to the shock absorber body assembly. The raised cooling pattern includes one or more cooling fins that extend along a length of the cylinder in a straight line and extend outwardly from the cylinder wall in an orthogonal direction, a cooling lattice mesh, or a cooling gyroid mesh.

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 relates to the technical field of mechanical metamaterials, in particular to a negative Poisson's ratio cell element with an embedded symmetrical broken subcell structure, which comprises a concave hexagonal main body, the concave hexagonal main body comprises two horizontal cell walls and inclined cell walls arranged at two ends of the two horizontal cell walls, and the central points of the two inclined cell walls are bent towards one side close to the central points of the horizontal cell walls; the number of the bent wall rods is two, and the two bent wall rods are symmetrically arranged in the inwards-concave hexagonal body. The inherent contradiction that the stretching performance must be sacrificed when the rigidity of a traditional concave honeycomb structure is improved is successfully solved, and the negative Poisson's ratio effect and the energy absorption capacity of the structure can be further improved while the structural rigidity is enhanced.

A bicycle component for an at least partially muscle-powered bicycle, including a seat post device adjustable between two positions, with two support members telescopically movable relative to one another in the axial direction namely, a first support member and a second support member. The bicycle component includes an anti-twist protection with a clamping element that non-rotatably couples the support members together, and which is displaceably received in a guiding groove, so that rotational movement of the first support member relative to the second support member can be at least partially blocked. The anti-twist protection includes a spline device with a spline unit that can be pressed against the clamping element in the axial direction. By pressing the clamping element and the spline unit together, the clamping element and / or the spline unit can be moved relative to the guiding groove in the peripheral direction.

To provide a hydraulic vibration isolator having a poppet valve, which comprises a safety function for preventing damage due to overload, and can be easily replaced with an existing product without increasing the size of the existing product.SOLUTION: A poppet valve device 9 comprises a valve case 11, a valve body 13 that opens and closes a valve seat 11a opening into the valve case 11, and a spring 14 that biases the valve body 13 in an opening direction. The valve case 11 comprises: a flange part 11b that is housed in an outer case 10 communicating with an oil passage 8, slidably penetrates a relief valve seat 10a that opens into the outer case 10 to branch off and merge with the oil passage 8, and abuts against the opening peripheral edge of the relief valve seat 10a; and a relief oil passage 11c formed between a side part and an inner wall of the outer case 10 by cutting out a side part. The valve case 11 is biased by a spring 12 in a direction of closing the relief valve seat 10a. In the poppet valve device 9, excessive oil pressure causes the flange part 11b of the valve case 11 to separate from a valve seat 10a of the outer case 10, and the oil pressure is released through the relief oil passage 11c.SELECTED DRAWING: Figure 5

Air springs for bicycle components are described herein. An example air spring includes a tube, a first sealhead coupled to the tube, a second sealhead coupled to the tube such that a sealed pressure chamber is formed in the tube between the first and second sealheads, and a seal coupled to the second sealhead. The second sealhead and the tube are coupled along an axial interface locking length. The tube has a vent port. The seal is spaced from the vent port by a port seal gap that is less than the axial interface locking length such that as the second sealhead is being decoupled from the tube, the seal loses sealing contact with the inner surface to enable at least a portion of the sealed pressure chamber to be equalized with atmospheric air before the second sealhead is fully decoupled from the tube.

The invention discloses a self-adaptive impact-resistant protective metamaterial with a Poisson's ratio autonomous constraint function, which comprises a PMP honeycomb, the PMP honeycomb comprises a plurality of honeycomb unit cell structures, and each honeycomb unit cell structure comprises a hexagonal thin-wall structure I and a hexagonal thin-wall structure II internally connected in the hexagonal thin-wall structure I. The invention further discloses a preparation method of the self-adaptive impact-resistant protective metamaterial with the Poisson's ratio autonomous constraint function. Compared with an SHC honeycomb, the PMP honeycomb has the advantages that the dynamic Poisson ratio of the PMP honeycomb is relatively stable in the whole crushing process, and the initial fluctuation range is only 0.1. In addition, the average dynamic Poisson's ratio of the PMP honeycomb is relatively small, indicating that the PMP honeycomb is almost free of transverse deformation without additional assistance. After the PMP honeycomb is compressed to be densified, the transverse length of the PMP honeycomb is only increased by 3.5%. Wherein the PMP honeycomb has better self-constraint capability, so that the PMP honeycomb has a more stable energy absorption mode.

A double-piston membrane type air spring comprises a shell, an upper installation base used for being fixedly connected with a vehicle body and a lower installation base used for being fixedly connected with a suspension swing arm, the upper installation base is provided with a first piston installation column extending downwards, and a first piston is fixedly arranged on the first piston installation column. The lower mounting seat is provided with a second piston mounting column extending upwards, a second piston is fixedly arranged on the second piston mounting column, a space distance is reserved between the first piston mounting column and the second piston mounting column, and a rubber air bag is arranged between the first piston and the second piston and located in the shell. The upper end of the rubber air bag is fixedly connected with the first piston installation column, the lower end of the rubber air bag is fixedly connected with the second piston installation column, the axial length ratio of the first piston installation column to the second piston installation column is 2: 1-4: 1, the axial length of the first piston is the same as that of the first piston installation column, and the axial length of the second piston is the same as that of the second piston installation column.

A length-adjustable shock absorber includes a tubular body and an adjusting cylinder. The tubular body has one end formed with threads to form a threaded section. The threaded section is interrupted in an axial direction by at least one recessed groove. The adjusting cylinder is threadedly connected to the threaded section and has at least one through hole. The through hole is rotated along with the adjusting cylinder to face the recessed groove. A locking lever is pivotally connected outside the through hole. The locking lever is pivotable between a locking position and an unlocking position. When the locking lever is pivoted to the locking position, it is engaged in the recessed groove to lock the adjusting cylinder. When the locking lever is pivoted to the unlocking position, it is disengaged from the recessed groove to unlock the adjusting cylinder.

Disclosed are an intelligent vibration isolator and a control method thereof. The intelligent vibration isolator includes a base, a vibration isolation mechanism disposed inside the base, and a controller; the base includes a bottom plate and a supporting sleeve disposed on the bottom plate; the vibration isolation mechanism includes a load platform, a supporting platform, a magnetorheological elastomer and an electromagnet which are sequentially and coaxially disposed from top to bottom; the vibration isolation mechanism is provided with at least three negative stiffness mechanisms that are uniformly distributed in a circumferential direction of the supporting platform; a strain detection device is disposed on an outer wall of the magnetorheological elastomer; and the controller adjusts and controls a magnitude of current of the electromagnet according to a received strain magnitude to control vertical stiffness of the isolator, and make the intelligent vibration isolator always be in a quasi-zero stiffness state.

The invention provides an innovative design of a corrugated pipe damper integrated on a sliding main bearing aiming at the problems of transmission system abrasion and fatigue damage caused by vibration energy accumulation of the wind power main bearing under a complex wind load, and belongs to the technical field of wind power generation equipment. A traditional main bearing damping structure is low in energy absorption efficiency, insufficient in dynamic response and difficult to effectively suppress vibration. Through collaborative design of a corrugated pipe multi-stage laminated structure and a fluid energy dissipation channel, a composite mechanism for dynamically dissipating vibration energy is formed. The core of the damping device is composed of a corrugated pipe assembly, damping cavities and a main shaft adaptive structure, impact energy is absorbed through axial flexible deformation of the corrugated pipe, vibration attenuation is achieved in combination with reciprocating flowing of damping fluid in the multiple cavities, and low-frequency swing and high-frequency harmonic waves of a main bearing are synchronously restrained. According to the design, the bearing capacity is guaranteed, vibration transmission is remarkably reduced, the service life of the main bearing is effectively prolonged, the operation reliability of a unit is improved, and the damping requirement of a core transmission system of a high-power wind turbine generator is met.

According to the present invention there is provided an active vibration control system comprising: an electromagnetic actuator and a control element, the electromagnetic actuator being operable to apply a force on a base structure to which the active vibration control system is attachable such that vibrations of the base structure are actively controllable by the application of said force, wherein the electromagnetic actuator and control element are relatively moveable such that the active vibration control system has at least two modes of vibration, and wherein movement of the electromagnetic actuator causes movement of at least a part of the control element.