1124results about "Dampers-spring combinations" 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 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.

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 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.

The present invention provides a liquid rubber composite node for reducing vehicle wheel-rail wear and vibration noise based on liquid damping, comprising a mandrel with a mandrel ball in a middle, rubber layers vulcanized and bonded around the mandrel ball, and an inner sleeve vulcanized and bonded with the rubber layer at a periphery of the rubber layers; a front cavity and a rear cavity with rubber layers at cavity bottoms are arranged in the inner sleeve on a front side and a rear side of the liquid composite node respectively; the mandrel ball is provided with a flow channel for communicating the front cavity and the rear cavity; the front cavity and the rear cavity are flat, the axial widths of the axial sections of the two cavities are greater than radial heights, and the front cavity, the rear cavity and the flow channel are filled with liquid. The present invention can achieve the variable stiffness characteristic of low static stiffness and high dynamic stiffness of a single stage suspension, promote the upgrade of vibration and noise reduction level technologies in the railway transit industry, and help the safe, high-speed, green and intelligent development of railway transit.

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.

A hinge device includes a shaft that is pivotally supported by a bearing portion and is rotatable, a first torque application unit configured to apply a frictional force to a peripheral surface of the shaft by fitting the shaft to the first torque application unit, and a second torque application unit configured to apply a frictional force to the shaft in an axial direction. The second torque application unit includes a flange that is formed on the shaft and abuts onto one end of the bearing portion, and a nut that is screwed to a male screw portion of the shaft and is tightened to the other end of the bearing portion via washers and a disc.

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 multi-directional controllable suspension system comprises a linear electromagnetic vibration reduction assembly and an arc-surface electromagnetic vibration reduction assembly, when the multi-directional controllable suspension system is used, when a vehicle frame at the lower end vibrates vertically, a first guide rod moves in the axial direction of an outer cylinder, and a cylindrical electromagnetic coupling unit fixed to the first guide rod moves between an outer permanent magnet array and an inner permanent magnet array; when the vehicle body inclines laterally or twists, the outer cylinder rotates around the hinged point of the outer cylinder and the lower end vehicle frame, the cambered surface electromagnetic coupling unit is driven to deflect between the upper permanent magnet array and the lower permanent magnet array, the gradient magnetic field is cut to generate resistance moment, and vibration is reduced. The first elastic piece and the second elastic piece provide elastic restoring force for the upper permanent magnet array and the lower permanent magnet array correspondingly to cooperatively inhibit side inclination and torsion, so that multi-dimensional vibration reduction in the horizontal direction is achieved, and the dynamic stability of the vehicle is improved.

A vibration absorber arrangement (1) is provided, in particular for tall slender structures, comprising a supporting structure (8), an absorber mass (2) which comprises a center of mass (3), and at least one wheel (4, 5) by means of which the absorber mass (2) is movable on a concavely curved rail arrangement (6), which is connected to the supporting structure (8), from a stable central position in two opposite directions, wherein a friction damper device (9) is provided. One wants to be able to adapt such a vibration absorber arrangement in a simple manner to different operating requirements. For this, it is provided that the friction damper device (9) is adjustable between a first state, in which it does not interact with the absorber mass (2) or only dampeningly, and a second state, in which it controlledly brings a movement of the absorber mass (2) to a standstill.

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.

The invention discloses a bridge electromagnetic inertial mass hybrid control damping system and an overall hybrid control method. The damping system comprises an inertial mass assembly, an electromagnetic assembly, a rigidity assembly and a corresponding parameter adjusting circuit. Wherein the ball screw system is used for converting linear translation into rotation, the inertial mass assembly is used for providing acceleration type inertial mass damping, the electromagnetic assembly is used for providing speed type electromagnetic damping, and the rigidity assembly is used for providing rigidity. In a normal operation stage, a parameter adjusting circuit is utilized, and the purpose of adjusting electromagnetic damping and rigidity values is achieved by changing circuit input, so that semi-active tuning is realized; under the action of an earthquake, circuit input is fixed, so that parameters of the damper are constant, and the anti-seismic robustness of the damper can be improved.

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.

The utility model discloses a motorcycle shock absorber preload and damping adjusting assembly, a preload adjusting set comprises a spring supporting seat, a transverse pin, a preload adjusting ejector rod and a preload adjusting knob which are sequentially installed from bottom to top along the axis of a shock absorber outer pipe, and when the preload adjusting knob is rotated, the preload adjusting ejector rod is driven to rotate and move up and down at the same time; the damping spring is driven to extend or retract through the transverse pin and the spring supporting seat in sequence, so that spring preload adjustment is realized; the damping adjusting set is installed in the preload adjusting set and comprises a damping adjusting ejector rod, a damping adjusting axis and a damping adjusting button which are sequentially installed from bottom to top along the axis of the shock absorber outer pipe, and when the damping adjusting button is rotated, the damping adjusting axis is driven to rotate and move up and down at the same time; and the damping adjusting oil needle is driven to move up and down through the up-down movement of the damping adjusting ejector rod, so that the flow of the damping oil hole is adjusted. The preloading and damping adjusting assembly is installed on the end cover of the motorcycle shock absorber, can be independently adjusted, does not interfere with each other, and is convenient and fast.

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.

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.

The utility model relates to the technical field of shock absorbers, in particular to an automobile chassis suspension shock absorber which comprises a shock absorber body, installation plates fixedly installed at the two ends of the shock absorber body, a protection mechanism for protecting the shock absorber body and a cleaning mechanism for cleaning dust on the surface of the protection mechanism. The protection mechanism comprises a first protection pipe, a second protection pipe and an installation assembly, wherein the first protection pipe and the second protection pipe are installed on the shock absorber body in a sleeving mode, and the installation assembly is used for installing the first protection pipe and the second protection pipe. The first protection pipe is composed of two first semicircular pipes. The second protection pipe is composed of two second semicircular pipes. According to the shock absorber, the first protective pipe and the second protective pipe are both installed on the outer side of the shock absorber body in the sleeving mode, so that the shock absorber body can be protected, and the situation that the shock absorber body is corroded and damaged and the service life is affected due to the fact that soil is splashed on the surface of the shock absorber body in the running process of an automobile can be avoided.

The invention discloses a built-in electromagnetic valve type semi-active shock absorber and a working method, the built-in electromagnetic valve type semi-active shock absorber comprises a working cylinder, a floating piston is arranged in the working cylinder, and an inner cavity of the working cylinder is divided into an air cavity and an oil cavity by the floating piston; the damping adjusting valve is slidably arranged in the oil cavity and divides the oil cavity into a compression cavity and a recovery cavity, and the upper end of the damping adjusting valve is connected with the piston rod; the damping adjusting valve comprises a valve body, a containing cavity is formed in the valve body, and a main valve seat hole is formed in the lower end face of the valve body. The main valve seat hole is communicated with the accommodating cavity in the valve body and the compression cavity; the valve core comprises a main valve core, a main valve spring and a main valve spring seat; the main valve spring seat is fixed in a containing cavity of the valve body assembly, and a pilot cavity is formed by the main valve spring seat and the electromagnetic valve assembly; the main valve spring is arranged between the main valve spring seat and the main valve element in a sleeved mode and abuts against the main valve element on the end face of the main valve seat hole. And the main valve core and the main valve seat hole form a main valve port. According to the built-in electromagnetic valve type semi-active shock absorber and the working method, machining is easy, and meanwhile the quick response capacity is achieved.

The utility model relates to the technical field of hydraulic driving, and provides a hydraulic driving system. The hydraulic driving system comprises a hydraulic cylinder, a driving oil way and an electric driving structure. The hydraulic cylinder comprises a cylinder body with a cavity, a piston arranged in the cavity in a sliding mode and a piston rod connected to the piston. The piston and the piston rod jointly divide the cavity into a rodless cavity and a rod cavity. The driving oil path is communicated with the rodless cavity and the rod cavity; the electric driving structure is arranged in the rod cavity and comprises a permanent magnet and a winding, the permanent magnet and the winding are sleeved, one is arranged on the cylinder body, and the other is arranged on the piston rod or the piston. According to the hydraulic driving system provided by the invention, the response speed and the response range are improved and expanded through combination of two modes of hydraulic driving and electric driving, and the hydraulic driving system has higher safety redundancy.

An adjustable shock adapter for converting a non-adjustable shock into a shock with full spring and ride height adjustment. The adjustable shock adapter may include a tubular component adapted for engagement with a shaft of the non-adjustable shock. The tubular component may include a rim extending radially outward from an outer surface of the tubular component, located towards the bottom of the tubular component, and positioned against a fixed component of the shock absorber to prevent the tubular component from sliding past the component. The adjustable shock adapter may also include a collar mounted to the outer surface of the tube-shaped component and moveable upwards or downwards along the tubular component and locked into place. The collar may include a second rim positioned against a spring of the non-adjustable shock, acting as a stopper to limit how low the height of the UTV can be adjusted.

The invention relates to the technical field of automobile shock absorbers, in particular to a shock absorber based on anti-settling magnetorheological fluid, and adopts the main technical scheme that the shock absorber comprises an outer cylinder barrel and a floating piston; the floating piston is installed on the lower portion of the inner side of the outer cylinder barrel in a sliding mode, the interior of the outer cylinder barrel is divided into a working cavity and a gas cavity through the floating piston, the gas cavity is located on the lower portion of the outer cylinder barrel, the gas cavity is filled with nitrogen, and the working cavity is filled with anti-settling magnetorheological fluid. The piston assembly is arranged in the outer cylinder barrel in a sliding mode and divides a working cavity in the outer cylinder barrel into an upper cavity and a lower cavity. Through innovative gradient coating structure design and interface regulation and control technology, the performance of the magnetorheological fluid is remarkably improved. Hollow iron powder is adopted as a core, a Fe3O4 transition layer and a polyethylene coating layer are sequentially constructed on the surface of the hollow iron powder, and a unique three-layer composite structure is formed.

A damper includes a damper housing, a fluid chamber in the damper housing, a damping fluid in the fluid chamber, a piston displaceable in the fluid chamber, a piston rod connected to the piston, and a volume compensating device in the damper housing. The volume compensating device compensates for a displaceable volume of the damping fluid when the piston rod is immersed into the fluid chamber, and includes a seal to seal the fluid chamber relative to the piston rod and / or relative to an inner wall of the damper housing, a support element to guide the seal, a spring element to reset the seal after a damping stroke at least partially into an initial position. The spring element, the seal, and / or the support element form a common compensating member having an integral one-piece configuration. The compensating member is configured to bear loosely against a cover for closing the damper housing.

The utility model belongs to the technical field of dampers, and particularly relates to a magnetorheological damper which comprises an outer cylinder, an inner cylinder is coaxially arranged in the outer cylinder, and a circulation channel is reserved between the outer side wall of the inner cylinder and the inner side wall of the outer cylinder. The circulating holes are formed in the top and the bottom of the side wall of the inner cylinder, and the circulating channel communicates with the interior of the inner cylinder through the circulating holes, so that the magnetorheological fluid circularly flows between the circulating channel and the interior of the inner cylinder; and the side wall of the inner cylinder is filled with the anti-freezing cooling liquid, and the anti-freezing cooling liquid is used for heat exchange with the magnetorheological fluid. According to the utility model, the problems of magnetorheological fluid sedimentation and temperature rise can be solved.

Vehicle suspension, especially suspension of a swinging half-axle (3) of a vehicle relative to the vehicle frame (1), contains a pneumatic spring, created as an air bellows (5) with bottom lid (11) and top lid (9, 17), and a mechanical spring, created as a coil spring (6, 16), which are arranged mutually parallel between the frame (1) and the axle in such manner, that the coil spring (6, 16) is arranged coaxially with the air bellows (5) inside it between both lids (11; 9, 17). The coil spring (6, 16) and air bellows (5) create swinging bellows (2), wherein the swinging bellows (2) is, to allow its turning movement relative to the swinging half-axle (3) in the necessary angular range given by the movement of the half-axle (3), by its bottom lid (11), lodged with the ability to turn around an axis parallel to the longitudinal axis of the vehicle.

The double-rubber hydraulic bushing based on the new energy automobile comprises an inner pipe and an outer pipe, and a first liquid cavity and a second liquid cavity are horizontally formed between the inner pipe and the outer pipe; the device further comprises a runner plate, and an inertia channel is formed in the runner plate. According to the double-rubber hydraulic bushing based on the new energy automobile, the damping and noise reduction functions are added through the main spring rubber and the first rubber, the dynamic-static ratio is reduced through the main spring rubber, transmission of external vibration to an automobile body is reduced, dynamic interference between the hydraulic bushing and parts around the whole automobile is avoided through the first rubber, and the service life of the whole automobile is prolonged. Meanwhile, durability reduction caused by excessive product deformation is avoided, so that the problems of dynamic interference and durability of the hydraulic bushing are avoided, a limiting block is arranged to be matched with first rubber to be used for attenuating and buffering the impact strength when the whole vehicle passes through a rough road surface, buffering and damping of the new energy vehicle are improved, and the service life of the new energy vehicle is prolonged. And the durability and the shock absorption and noise reduction functions of the hydraulic bushing are greatly improved.

The application provides an electromagnetic inertial actuator, permanent magnets, inner yoke iron and outer yoke iron are fixedly connected by using non-magnetic retainer, so that only ampere force exists in the magnetic circuit system, and good output linearity of the actuator is ensured. On this basis, disc-shaped spring plates with quasi-zero stiffness characteristics are arranged, the inherent frequency of the system is reduced, and low-frequency output performance is ensured. The permanent magnets, the inner yoke iron, the outer yoke iron, the end cover and the heat dissipation device are integrally designed, a large inertial actuator mover mass is formed, the effective mass of the actuator, i.e. the ratio of the mass of the movable part to the total mass, is maximized. In this way, the low-frequency output and the output value per unit mass can be improved, the total volume and mass of the inertial actuator are effectively reduced, and the installation space is saved. Meanwhile, increasing the mass of the mover can effectively reduce the low-frequency vibration displacement of the inertial actuator, and the quasi-zero stiffness characteristics can be further ensured to be realized and stable.

The present invention provides a magnetically controlled friction damper and a control method thereof. The magnetically controlled friction damper includes: a damper body, a controller, a sensor, and a coil; the sensor is arranged on the structure to be damped to collect the vibration signal of the structure to be damped; the damper body includes a fixed component and a movable component, the movable component is connected to the fixed component, and the movable component can move relative to the fixed component; the coil is arranged on the movable component or the fixed component; the controller is used to obtain the vibration signal and adjust the current on the coil based on at least the vibration signal to change the damping effect between the fixed component and the movable component. The magnetically controlled friction damper has a relatively stable and reliable vibration reduction effect, which can improve the stability and safety of the structure to be damped.

The invention relates to an electromagnetic hydraulic mount, a control method thereof and a vehicle, and belongs to the technical field of vibration isolation devices. The electromagnetic hydraulic suspension comprises a containing structure, a coil assembly, a main spring and an auxiliary spring. The coil assembly is arranged in the containing structure. The main spring is connected with the containing structure, and a first liquid cavity is formed between the main spring and the containing structure. The auxiliary spring is connected with the containing structure, and a second liquid cavity is formed between the auxiliary spring and the containing structure. Two first damping channels and a second damping channel are arranged in the containing structure, the two first damping channels communicate with the second damping channel, and the two first damping channels communicate with the first liquid cavity and the second liquid cavity correspondingly. The two first damping channels are located at the two opposite ends of the coil assembly respectively, and liquid flowing through the first damping channels cuts magnetic induction lines at the corresponding ends of the coil assembly. According to the electromagnetic hydraulic mount, the control method thereof and the vehicle, the vibration excitation attenuation effect can be improved.