4098results about "Shock absorbers" patented technology

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.

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 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 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.

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.

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.

The invention relates to the technical field of shock absorbers, and particularly discloses a novel frequency sensitive shock absorber piston valve which comprises a connecting rod arranged on the inner side of a shock absorber shell, a first flow guide hole and a second flow guide hole are formed in the lower end of the connecting rod, and the first flow guide hole and the second flow guide hole communicate with an oil channel formed in the inner side of the connecting rod, so that a bypass channel is formed; the piston valve is arranged between the first flow guide hole and the second flow guide hole, the frequency sensitive valve sleeves the outer side of the connecting rod, one side of the piston valve is in lap joint with one side of the frequency sensitive valve, and the frequency sensitive valve is communicated with the second flow guide hole. On the basis of a traditional shock absorber valve assembly, a set of frequency sensitive valve system is additionally arranged, the frequency sensitive valve system can conduct mechanical automatic adjustment on the damping force of the shock absorber along with changes of the vibration frequency or stroke of a whole vehicle at the low-frequency stage and the high-frequency stage, and therefore the requirement for actual use of the whole vehicle is met; the driving comfort and controllability are improved, and the reliability is better.

A hydraulic mount capable of damping both an up-down vibration and a front-rear vibration of a motor module includes an internal pipe; a main rubber formed on an external circumferential surface of the internal pipe, and provided with a plurality of liquid chambers in which fluid is sealed; an orifice unit mounted to an external circumferential surface of the main rubber to cover the plurality of liquid chambers; and an external pipe surrounding and mounted on the orifice unit, and the orifice unit includes a first flow path connecting an upper liquid chamber and a lower liquid chamber among the plurality of liquid chambers provided in the main rubber in a fluidable manner; and a second flow path connecting a front liquid chamber and a rear liquid chamber among the plurality of liquid chambers provided in the main rubber in a fluidable manner.

The embodiment of the invention discloses a damper, a vibration isolation device and semiconductor equipment, relates to the technical field of vibration isolation, and solves the problem that a measurement frame in existing high-precision semiconductor equipment cannot realize good vibration isolation and good instantaneous stability at the same time. The damper comprises a first fixing support, a second fixing support, a supporting structure, at least one damping structure and at least one pre-tightening adjusting structure. The supporting structure is connected with the first fixing support or the second fixing support. Any damping structure comprises at least one shape memory alloy damping wire. All the shape memory alloy damping wires in any damping structure are connected with the first fixing support. In any damping structure, at least one shape memory alloy damping wire diffracts on the supporting structure in the opposite direction and is connected with the second fixing support. And the at least one pre-tightening adjusting structure is connected with the shape memory alloy damping wire in the at least one damping structure. And the pre-adjusting structure adjusts the pre-tightening force of the corresponding shape memory alloy damping wire.

A hydro engine mount for a vehicle may include a locking body including a plurality of locking portions; a body plate including a plurality of fastening grooves configured to be fastened to the plurality of locking portions, wherein a main rubber is mounted in the body plate; and a diaphragm stacked between the main rubber and the locking body.

The invention discloses an oil way structure of a hydraulic damping cylinder, the hydraulic damping cylinder, a limb and a robot, and the oil way structure of the hydraulic damping cylinder comprises a body which is provided with a first group of one-way valve mounting positions, a second group of one-way valve mounting positions, a damper mounting position and a hydraulic cylinder mounting position; a first one-way valve and a second one-way valve are mounted at the first one-way valve mounting A third one-way valve and a fourth one-way valve are mounted at the second one-way valve mounting A first channel, a second channel, a third channel, a fourth channel and an intersection channel are formed in the body. Relative to the intersection channel, the first one-way valve, the second one-way valve, the third one-way valve and the fourth one-way valve have the same flowing direction. And the oil path structure forms a channel for hydraulic oil to circulate, so that the hydraulic oil circulates in each component of the hydraulic damping cylinder. According to the oil way structure of the hydraulic damping cylinder, hydraulic oil channels are concentrated, the number of the hydraulic oil circulation channels in other parts of the hydraulic damping cylinder is reduced, and the overall machining difficulty and cost of the hydraulic damping cylinder are reduced.

The utility model relates to the technical field of buffering protection, and discloses a spring hydraulic buffering protection device which comprises a damping piston cylinder and a piston rod, the damping piston cylinder is matched with the piston rod, a collided head is installed at the top of the piston rod, an elastic buffering cap is installed at the top of the collided head, a thrust spring is sleeved outside the piston rod, and the elastic buffering cap is sleeved outside the piston rod. The two ends of the thrust spring are fixed to the top of the damping piston barrel and the bottom of the elastic buffer cap respectively, the elastic buffer cap is made of high-elasticity materials and can effectively absorb impact force, and the bottom of the piston rod penetrates into the damping piston barrel in a sealed mode. By utilizing the damping characteristic of liquid flow and the elastic deformation of the spring, double buffering on impact force is realized, the stability and durability of the device are obviously improved, the vibration frequency of equipment in high-speed operation is effectively reduced, and the service life of the equipment is prolonged.

The application discloses a damping-adjustable hydraulic bushing and a control method thereof. The damping-adjustable hydraulic bushing is composed of a hydraulic bushing body and a solenoid valve. The hydraulic bushing body comprises a bushing support, a main spring rubber, a cast aluminum inner tube, an aluminum outer tube and a cage-shaped framework. The cast aluminum inner tube, the main spring rubber and the aluminum outer tube are coaxially arranged from inside to outside. The cage-shaped framework is arranged in the main spring rubber and used for supporting the main spring rubber. Two flow channel plates are assembled between the aluminum outer tube and the main spring rubber, so that a brake liquid chamber and an acceleration liquid chamber are formed between the main spring rubber and the flow channel plates respectively. A brake flow channel on the brake side flow channel plate cooperates with an acceleration flow channel on the acceleration side flow channel plate to form a passage. A connecting bridge is arranged on the cage-shaped framework. The solenoid valve is connected to the connecting bridge through bolts. An axial actuating hole is arranged on the cage-shaped framework. An actuating rod is arranged in the axial actuating hole and controlled by the solenoid valve.

Disclosed is a multi-modal and multi-degree-of-freedom piezoelectric active vibration isolation platform and a working method therefor. The piezoelectric active vibration isolation platform includes an upper platform, a lower platform, a control module, and four vibration isolation modules, where the vibration isolation module includes a passive vibration isolation unit and an active vibration isolation unit; the passive vibration isolation unit includes an upper connector, a lower connector, a cross Hooke hinge, and a first acceleration sensor; the active vibration isolation unit includes a fixed beam, a pre-tightening bolt, a second acceleration sensor, and a driving component; the platform can provide active vibration isolation for the longitudinal (axial) vibration and the bending vibration in any radial direction of a vibration isolation object, and has the advantages of fast response, resistance to electromagnetic interference, and light weight.

A shock absorber includes a cylinder, a sleeve provided so as to surround the outer circumferential surface of the cylinder, the cylinder formed of a different material from a material for the cylinder, first and second springs provided along the outer circumferential surface of the sleeve, and a slider provided between the first spring and the second spring, and capable of being displaced in an axal direction. The materials for the cylinder and the sleeve are a combination of materials that causes corrosion due to a contact of either one of those with the other one of those. A corrosion inhibitor is provided which suppresses an occurrence of corrosion on the cylinder or on the sleeve. In one embodiment, the materials are metals.

A shock absorber (SA; SA1; SA2; SA3) equipped with vehicle height adjustment according to the present invention comprises: a shock absorber body (D) containing a cylinder (1), a piston (2) inserted into the cylinder (1) such that it is movable in an axial direction and divides the interior of the cylinder (1) into an expansion-side chamber (R1) and a compression-side chamber (R2) filled with a fluid, a piston rod (3) inserted into the expansion-side chamber (R1), movable in the axial direction relative to the cylinder (1) and connected to the piston (2), and an outer tube (5) surrounding the cylinder (1); a separating element (30;301), that the interior of the outer tube (5) is divided into a container (T) and a reservoir (R), the container (T) storing fluid, the reservoir (R) is connected to the compression-side chamber (R2) to compensate for a volume of the piston rod (3) entering and exiting the interior of the cylinder (1); a pump (31) provided at the separating element (30; 301) which supplies and discharges the fluid through the reservoir (R) into the interior of the cylinder (1); and a damping force adjusting valve (18) provided at the separating element (30; 301) configured to adjust a damping force during expansion and compression of the shock absorber body (D).

A fluid damper having a damper housing with a first and a second fluid volume, and a damping piston located within the damper and separating the first and second fluid volume. The damper piston has a piston fluid pathway formed therethrough and between the first and second fluid volume. The fluid damper includes a fluid accumulator having a pressurizable gas volume and an accumulator fluid volume isolated from one another by a separation member. The fluid damper has a first fluid pathway extending solely between the first fluid volume and the accumulator fluid volume, and the fluid damper has a second fluid pathway extending solely between the second fluid volume and the accumulator fluid volume. A flow control valve is located in at least one of the first and the second fluid pathways, and the flow control valve has a non-zero threshold value.

The present plated member includes, on an outer surface, a plated film mainly composed of chromium deposited from a trivalent chromium bath containing at least chromium, carbon, and oxygen, in which the plated film contains 60 to 80 at % of chromium and 16.5 to 30 at % of carbon and has an indentation hardness of 7 GPa or more on the outer surface, and a degree of crystallinity calculated from a peak integrated intensity ratio of a measured value of X-ray diffraction measurement and the following expression (1) is 4% or less.

Provided is an anti-vibration device 1 configured for use in a suspension, comprising an extension and retraction section 12 having a damper rod 121 and a cylinder 122; a strut mount section 13 attached to the damper rod; a suspension spring section 17 arranged on an outer circumferential side of the extension and retraction section; a support section 16 made of a rigid body configured to support an upper end portion of the suspension spring section; a laminated section 14 arranged on an outer circumferential side of the damper rod and connected between the strut mount section and the support section, wherein the laminated section has an annular rubber layer 141 and an annular rigid layer 142 that are alternately laminated in an axial direction.

The invention provides a fan tuned mass inerter damper structure and a parameter design method, and belongs to the field of ocean engineering vibration reduction. The structure comprises an engineering structure, an outer sleeve, a roller, an inner sleeve, an additional mass block, four damper spring units and four inerter system units. The engineering structure is fixed with the external sleeve, and a guide rail is formed between the engineering structure and the external sleeve; the additional mass block is arranged in the center of the inner sleeve, the four inerter system units are connected with the damper spring unit and located on the same plane, the other ends of the four inerter system units are connected with the inner wall of the inner sleeve, and each inerter system unit comprises an inerter system spring, a damping unit, a first inerter unit and a second inerter unit. According to the structure, translation-rotation conversion is achieved through the inerter unit, efficient inertia synergy is achieved with small physical mass, and the load of a draught fan is relieved; the four units are symmetrically arranged to ensure omnidirectional vibration suppression; the roller guide rail reduces friction and improves response sensitivity and energy consumption efficiency; according to the parameter design method, parameters are accurately optimized, and broadband vibration reduction performance and engineering reliability are guaranteed.

A charger according to the present embodiment may comprise a cover having a space formed in the cover; a first pulley guide and a second pulley guide disposed in the cover; a first moving pulley guided by the first pulley guide and moved by a charging cable; a second moving pulley guided by the second pulley guide and moved by the charging cable; and a damper installed on one of the first moving pulley and the second moving pulley.

Disclosed are a bushing mount and a manufacturing method thereof that may relieve residual stress of a rubber bushing molded on a middle pipe and increase durability. The manufacturing method of the bushing mount includes disposing the middle pipe coaxially with an expansion pipe, molding the rubber bushing on the middle pipe to be joined to an outer circumferential surface of the expansion pipe and surround the middle pipe, press-fitting the rubber bushing into an outer pipe, and press-fitting an inner pipe having a radius greater than a radius of the expansion pipe into the expansion pipe to expand the expansion pipe.

A shock absorber includes a first passage through which a working fluid flows from one chamber in a cylinder due to movement of a piston, a second passage which is provided in parallel with the first passage, a disk which is provided in the first passage and generates a damping force, a spool member, having a tubular shape, which is capable of changing a biasing force against the disk by moving in an axial direction, a pilot chamber which is provided in the second passage, located on an inner peripheral side of the spool member, and generates a biasing force against the disk in the spool member, and a closing member which blocks a flow of the working fluid from the pilot chamber to the other chamber and is provided to be movable with respect to the spool member.

The invention relates to the technical field of shock absorbers, in particular to a hydraulic pilot-operated type adjustable pre-tightening shock absorber. The hydraulic pilot-operated type adjustable pre-tightening shock absorber comprises a piston assembly used for providing shock absorption damping and a hydraulic driving assembly, a spring piece is arranged outside the piston assembly, one end of the spring piece is fixed to the piston assembly, the spring piece is used for providing damping force for the piston assembly, and the other end of the spring piece is connected with the hydraulic driving assembly. The hydraulic driving assembly provides axial adjusting force so that the pre-tightening force of the spring piece on the piston assembly can be changed. The hydraulic driving assembly comprises a valve sleeve provided with a pressure control part and an output rotor, the output rotor is installed in the valve sleeve, a gap exists between the output rotor and the upper portion of the valve sleeve, and the output rotor is in sliding fit with the valve sleeve and can rotate and axially move relative to the valve sleeve. The invention provides a shock absorber which is compact in structure, quick in response, easy to realize in engineering and capable of effectively improving the adaptability of a vehicle.

A motor vehicle having an active damping control, which includes at least one vibration damper having a damper piston, which can be moved back and forth in a main pipe with hydraulic medium in an axial direction relative to the main pipe. The main pipe is arranged in a container pipe. An intermediate pipe is arranged between the main pipe and the container pipe. The main pipe, the intermediate pipe and the container pipe are arranged coaxially in a three-pipe damper. The damper piston is attached to an end of a piston rod.

The invention relates to a self-adaptive tuning inerter damping device and method for suppressing vertical micro-vibration of a structure. The self-adaptive tuning inerter damping device comprises a bearing base, a tuning mass block, a vibration system connecting the bearing base and the tuning mass block, a pneumatic control system and an intelligent measurement and control system. The vibration system is formed by connecting an outer side air spring set and a central air spring in series with a hydraulic inerter unit, an adjustable damping branch and a fixed inerter branch which are connected in parallel are integrated in the hydraulic unit and are respectively provided with an electro-hydraulic proportional valve and a spiral pipe type hydraulic inerter, so that adjustable damping and mass amplification are realized. The pneumatic system adjusts the air pressure of each air spring through an independent air path and a proportional valve so as to change the rigidity. An intelligent system monitors vibration through a sensor, a central controller identifies excitation frequency and optimizes parameters based on a kinetic model, and rigidity and damping are synchronously adjusted. According to the invention, the problem that a mechanical inerter is insufficient in response to micro-vibration is solved, the defects that a traditional passive device is narrow in frequency band and easy to detune are overcome, and broadband, self-adaptive and high-performance suppression of vertical micro-vibration of a structure is realized.

The invention relates to a vertical high-speed motor active and passive vibration reduction system, which comprises a motor body, a motor base, a controller, a vibration sensor and an integrated active and passive pneumatic damping actuator, and is characterized in that the actuator is arranged between the motor body and the motor base; the vibration sensor is in signal connection with the motor body; the input end of the controller is in signal connection with the vibration sensor, and the output end of the controller is in signal connection with the high-speed switch pneumatic servo valve. According to the vertical high-speed motor active and passive vibration reduction system and vibration reduction method, a controller, a high-speed switch pneumatic servo valve and other components form an active damping system; and the damping pore plate and the auxiliary air chamber jointly form a built-in passive damping system. The passive damping system processes broadband vibration, and active control burden is reduced; and the active damping system achieves accurate suppression, and the overall energy efficiency ratio is increased. The active damping system and the passive damping system work in cooperation to jointly solve the vibration problem, so that the vibration problem of the vertical high-speed motor is rapidly and effectively suppressed.

The invention relates to the technical field of anti-riot vehicles, and discloses a police anti-riot command vehicle which comprises a vehicle chassis, a compartment body arranged on the vehicle chassis and a command communication system arranged in the compartment body, and further comprises an anti-riot net laying device integrated on the top of the compartment body and used for rapidly launching and unfolding an anti-riot net towards the outside of the vehicle; the emergency supporting wheel mechanism is arranged on the vehicle chassis, corresponds to vehicle tires installed on the side face of the vehicle chassis and is used for providing emergency supporting when the vehicle tires fail. The anti-riot net laying device comprises a launching cylinder, an anti-riot net contained in the launching cylinder and a driving mechanism providing power for launching of the anti-riot net, and the launching cylinder is arranged at the top of the compartment through a mounting base. Through an integrated anti-riot net laying device and a centralized control system, a non-fatal interception means and a command center are deeply fused, and seamless connection from situation awareness to rapid disposal is achieved.

The invention relates to the technical field of magneto-rheological damper regulation and control, and discloses a reinforcement learning adaptive optimal regulation and control system of a magneto-rheological damper, which comprises a magneto-rheological damper body, the body is provided with a magnet exciting coil, a magneto-rheological fluid channel, a piston rod and a cylinder barrel, after the magnet exciting coil is electrified, a controllable magnetic field is established in the magneto-rheological fluid channel; the magnetic field intensity is continuously adjustable, the sensing network is composed of a displacement sensing unit, a speed sensing unit, an acceleration sensing unit, a temperature sensing unit and a magnetic field intensity sensing unit, and all the sensing units are fixed to the outer wall of the cylinder barrel in a non-contact mode and are coaxially arranged with the movement axis of the piston rod. A sensing network, an edge calculation node, a reinforcement learning decision-making unit and an online evolution engine are embedded in a heat conduction substrate and a shielding cover on the outer wall of the same cylinder barrel, the displacement angle and acceleration response between structural layers are remarkably reduced, and advanced protection that vibration is not displayed and damping is changed is achieved.