1406results 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.

A damping device includes a cylinder having a damping fluid, and a piston to be actuated via a piston rod and movable through the damping fluid during a damping stroke. A flow channel allows the damping fluid to pass through the piston during the damping stroke. A control piston is mounted in / on the piston to be movable, and a cross section of the flow channel is changeable by a movement of the control piston relative to the piston. A force accumulator can move the control piston relative to the piston with a return force counteracting a flow force exerted by the damping fluid on the control piston during the damping stroke. A control aperture allows a pressure drop proportional to the flow force and the speed of the piston to occur, and a target speed for the piston is dependent on a position of the piston relative to the cylinder.

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 discloses an automobile shock absorber and a buffer test device thereof, and relates to the technical field of automobile shock absorbers, the automobile shock absorber comprises a shock absorber main body, one end of the shock absorber main body is provided with a mounting hole, and a position, close to the mounting hole, of the shock absorber main body is provided with a test positioning member; and the other end of the shock absorber main body is provided with a detachable detection top piece. The buffer test device of the automobile shock absorber comprises a test board, a sensing detection mechanism, a telescopic installation clamping piece and a simulation turntable mechanism. The simulation turntable mechanism drives the reciprocating screw rod to synchronously rotate in the rotating process, the reciprocating screw rod enables the matched screw rod sleeve to reciprocate, and the screw rod sleeve drives the linkage ring to transversely reciprocate, so that the linkage ring drives the distributed sliding bumps to slide relative to the simulation turntable mechanism through the first linkage rod to adjust the projection height; therefore, different-degree bumpy road surfaces can be automatically adjusted and simulated.

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.

The present invention discloses an auxiliary spring that compensates for the height decrease due to the creep of a rubber body in a mechanical transmission manner, which includes a rigid core shaft, a rubber body vulcanized and bonded to the outer periphery of the core shaft, a metal outer sleeve vulcanized and bonded to the outer periphery of the rubber body, and a support plate horizontally installed on the top of the metal outer sleeve. A height lifting device is provided between the core shaft and the base. The lifting device includes a frame base, a lifting mechanism installed on the frame base, a torsion transmission mechanism, and a pressure storage mechanism. When the rubber body has crept and dropped to a set height, the carriage is in a heavy load condition, and the auxiliary spring encounters a downward overload impact, the support plate sinks and presses down the pressure storage mechanism, and the pressure storage mechanism temporarily stores the pressure. When the downward overload impact is released or the carriage heavy load is released, the pressure stored in the pressure storage mechanism causes the lifting mechanism to lift the auxiliary spring upward through the torsion transmission mechanism, thereby realizing the compensation for the decreased height of the auxiliary spring.

Disclosed is a rotational spring dampener having a core, a first housing element, a second housing element, and a tensile member. The core includes an opening therethrough and a first plurality of bosses. The first housing element comprising a second plurality of bosses, while the second housing element comprising a third plurality of bosses. The first housing element and the second housing element form a housing assembly having a cavity therein, where the core is configured to pivot relative to the housing assembly. The tensile member is positioned within the cavity to dampen movement of the core relative to the housing assembly. The tensile member is connected to the core via the first plurality of bosses and to the first housing element via the second plurality of bosses. The tensile member is or comprises a solid silicon polymer. Each of the second plurality of bosses can define a cavity configured to receive one of a third plurality of bosses formed on the second housing element to define a press-fit assembly. The housing assembly can include an alignment groove to serve as a poka-yoke. The first housing element and the second housing element can be coupled to one another to form the housing assembly via one or more snap assemblies.

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.

The invention discloses a damping-controllable low-impact inerter vibration reduction device and a control method, the damping-controllable low-impact inerter vibration reduction device comprises a low-impact inerter, a shell, a ball screw device and a controllable electromagnetic damper, the sudden change working condition of instantaneous reversing of a traditional inerter often induces obvious impact, and then the vibration reduction performance is deteriorated. Therefore, the invention provides the double-flywheel inerter structure with different rotating directions, and the double flywheels work independently, so that the problem that large impact is generated due to sudden change of reversing is effectively solved. Besides, the controllable electromagnetic damper and the low-impact inerter are integrally designed, the inerter overcomes the defect that the damper cannot change the inherent frequency of a system and can provide large inerter, a control method is provided, the controllable electromagnetic damper can be adjusted to output expected electromagnetic damping force according to the needed ideal torque, and the electromagnetic damping force can be adjusted to be larger than that of the low-impact inerter. Therefore, the vibration damping device can obtain more excellent vibration damping performance.

The present invention discloses a novel combined vibration damping device with adjustable stiffness and damping, which relates to the technical field of vibration damping; it includes a magneto-resistive stress negative stiffness spring located inside the housing and a piezoelectric friction assembly located inside the bearing seat; a central shaft is connected between the two, and a metal helical spring is sleeved outside the central shaft. The bottom of the metal helical spring is connected to a spring base located at the top of the housing, and the top of the metal helical spring is connected to the bottom of the bearing seat; the central shaft is fixedly connected to the top inside the housing through a metal cross leaf spring. The magneto-resistive stress negative stiffness spring and the metal cross leaf spring can be connected in parallel to achieve the adjustment of quasi-zero stiffness, and the piezoelectric friction assembly can achieve the adjustment of damping; a load platform is fixedly arranged at the top of the bearing seat. The present invention has non-linear frequency-varying characteristics of high static stiffness - low dynamic stiffness, large low-frequency damping - small high-frequency damping, and can well solve the contradiction between the bearing capacity and the vibration damping frequency band, as well as the contradiction between high-frequency and low-frequency vibration attenuation, and achieve high-performance vibration damping.

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 relates to an intelligent anti-grounding motorcycle shock absorber, and relates to the technical field of shock absorbers, the intelligent anti-grounding motorcycle shock absorber comprises a spring system, a damping system and an inertia reducing system, the spring system comprises an upper spring mounting seat, a main spring and a lower spring mounting seat which are mounted in sequence, and the damping system is provided with a frame end part and a wheel end part; a frame end component of the damping system is installed on the upper spring installation base, a wheel end component of the damping system is installed on the lower spring installation base, the wheel end component and the frame end component slide through a sliding pair, a damping channel is formed in the frame end component, and the inertia reducing system comprises an inertia rod device, an air pressure generating device and a reducing device. The reducing device is installed on the damping channel, the inertia rod device is installed on the wheel end component in a sliding mode, the air pressure generating device is installed on the wheel end component, the inertia rod device is in transmission connection with the air pressure generating device, and the air pressure generating device is communicated with the inertia reducing system and can prevent grounding.

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.

A protective headgear can include a core and two or more impact absorbing layers coupled to the core. At least one impact absorbing layer can include a number of impact absorbing components that are configured to absorb and reduce the force of impact incident on the protective headgear. The impact absorbing materials can employ cylindrical segments of viscoelastic foam with a sealed central void to absorb high energy impacts. The protective helmet can reduce the occurrence of concussions and subconcussive impacts to the brain.

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.