1192results about "Vibration dampers" patented technology

An ortho-planar spring has a platform movably coupled to a base and being movable linearly with respect to the base along at least a portion of an axial direction perpendicular to both a base surface and a platform surface. A resilient and flexible connecting structure is connected to and between the base and platform. The connecting structure is bendable to develop (i) an axial force along the axial direction to bias the platform in a stable position with respect to the base, and (ii) non-axial forces which substantially sum to zero to preserve the orientation of the platform with respect to the base. Thus, the spring is very compact and does not have rotation between the deflecting ends. The spring may be associated with a valve opening, and a button for restricting flow through the valve opening, to bias the button at a position with respect to the valve opening.

An energy storage system comprises a housing and a flywheel having a drive shaft portion attached to a cylindrical ferromagnetic rotor portion. The drive shaft portion defines a substantially vertical axis about which the rotor portion is mounted for rotation. A magnetic bearing assembly comprised of an annular permanent magnet having no electromagnetic components is mounted on the housing in stationary centered relation about the vertical axis above the rotor portion so as to attract the rotor portion axially upwardly towards a lower face of permanent magnet, thereby supporting a significantly high portion of the weight of the flywheel. At least one low friction mechanical bearing assembly is mounted within the housing about the drive shaft portion to provide radial positioning of the rotor portion and to limit at least upward axial movement of the rotor portion in relation to the lower face. The annular permanent magnet overlies a portion of the end face of the rotor with the balance providing a return path for magnetic flux.

A geared, power transmission mechanism for a hybrid electric vehicle wherein multiple power flow paths are established between an engine and vehicle traction wheels and between an electric motor and the vehicle traction wheels. A vibration damper assembly, including damper springs and motor inertia mass, is located at the torque output side of the electric motor, whereby inertia torsional vibrations are attenuated.

A protective member includes outer and inner layers interconnected by multiple connectors under tension along their longitudinal axis. The connectors absorb energy from an impact force by resisting further tension along their longitudinal axis, can elongate along their longitudinal axis and allow the layers to move relative to each other. The protective member can be used in numerous applications and environments, including for participants in sports, in applications including bumpers, passenger cabins, car seats, beds, torso protection, ships, gloves, footwear and items.

A high temperature damper for a roller bearing having a long shelf life and capable of withstanding temperatures in a gas turbine engine shaft. The damper includes a damping chamber formed between a stator housing and the outer race of the bearing, and is filled with a liquid metal such as Gallium that has a paste-like consistency at room temperature so as not to flow and leak from the damping chamber, and a liquid-like consistency at about 1,500 degrees F. in order to withstand the extreme temperatures of a gas turbine engine. Seals having a U-shape cross section are made of a high temperature metal like Hastalloy or Hynes and enclose the liquid metal within the damping chamber.

A suspension apparatus 1 includes an electric shock absorber 30 having a motor 40 and a ball screw mechanism 35, an electric circuit 101, an inverting amplification circuit 120, and an inertia compensation capacitor Cp. The electric circuit 101 electrically connects the two electricity supply terminals of the motor 40. The inverting amplification circuit 120 is connected to the electric circuit 101. The inertia compensation capacitor Cp is connected to the output terminal O of the inverting amplification circuit 120. As a result of approaching or separating motion between sprung and unsprung members, not only a generated current but also an inertia corresponding current I_m which represents an inertial force of a rotation body, such as the ball screw shaft 36 and the rotor of the motor 40, flows through the motor 40 and the electric circuit 101. A current I_p which is antiphase to the inertia corresponding current I_m flows through the inertia compensation capacitor Cp. This antiphase current I_p cancels out the inertia corresponding current I_m.

A vehicle axle-side tube 2 is slidably inserted inside a vehicle body-side tube 1, and a motor “M” is connected inside the vehicle body-side tube 1, and a ball screw nut 3 traveling together with the vehicle axle-side tube 2 is disposed inside the vehicle axle-side tube 2, and a screw shaft 4 connected to the motor shaft “MS” is rotatably threaded into the ball screw nut 3, wherein a linear movement of the ball screw nut 3 is converted into a rotational movement of the screw shaft 4, which is transmitted to the motor shaft “MS”, thereby to generate an electromagnetic force against rotation of the motor shaft “MS” and this electromagnetic force is used as damping force for restricting the linear movement of the vehicle axle-side tube.

The invention provides a mechatronic suspension system and a method for shock absorbing thereof. The invention applies the analogies between mechanical and electronic networks to propose a mechatronic suspension system, which combines a ball-screw inerter and a permanent magnet electric machinery, such that the complicated network structure can be realized through the combination of mechanical and electronic networks. The mechatronic suspension system is connected to two terminals, and consists of the inerter mechanism, the permanent magnet electric machinery and the feedback circuit. The inerter mechanism is connected to the terminals to transfer the linear motion into the rotational motion. The permanent magnet electric machinery is connected to the inerter mechanism to generate a corresponding voltage. And the feedback circuit is connected to the permanent magnet electric machinery to provide suitable system impedance and to generate a feedback force.

The invention discloses a rigidity-adjustable semi-active control type torsional damper for vehicles. The rigidity-adjustable semi-active control type torsional damper for the vehicles comprises a driving shaft, a driven shaft, a negative stiffness structure, a positive stiffness structure, a damping fin, a displacement sensor, a controller and a power supply. The power supply is connected with the controller, and the controller is respectively connected with the negative stiffness structure, the positive stiffness structure and the displacement sensor. The positive stiffness structure is arranged at the bottom inside the driven shaft and covers the outer portion of the end of the driving shaft, the damping fin is arranged between the positive stiffness structure and the driven shaft, the negative stiffness structure sleeves the outer portion of the driving shaft and is connected between an outer circle of the driving shaft and an inner wall of the driven shaft, and the displacement sensor is arranged on the outer circle of the driving shaft. Compared with the prior art, the rigidity-adjustable semi-active control type torsional damper for the vehicles can guarantee the transmission of required torque and can reduce torsional vibration of a wide band, the problem of contradiction of a traditional torsional damper between torque transmission and vibration reduction is solved, and the rigidity-adjustable semi-active control type torsional damper for the vehicles is favorable for vehicle running safety and comfort.

The invention discloses a convenient disassembly and assembly temporary installation frame for electric facilities, including a base, the upper end of the base is fixedly connected with two first hollow columns, and a second hollow column is slidingly sleeved in the two first hollow columns , the upper ends of the two second hollow columns are fixedly connected with a placement plate, the inside of the base is provided with a storage slot, the lower end of the base is fixedly connected with a driving device, the end of the output shaft of the driving device passes through the storage slot and A rotating rod is fixedly connected, and the upper end of the rotating rod is rotatably connected to the inner top of the storage tank. The first gear is fixedly sleeved on the side wall of the rotating rod, and the inner bottom of the storage tank is rotatably connected with two threads. rods, and the second gears are fixedly sleeved on the side walls of the two threaded rods. The invention has simple structure, convenient operation, can adjust its height according to actual power construction conditions, is convenient to disassemble and carry, and has very good use effect.

A dispensing pump includes a spring assembly and a locking arrangement to prevent the dispensing head from being deployed and/or actuated during shipment, stocking and pre-purchase handling. The dispensing pump includes a pump base, and a dispensing head having a piston stem. The spring assembly includes a slotted tubular spring element and first and second loading cones received at opposing ends of the slotted tubular spring element. Various locking arrangements may include interacting rotatable lugs provided between the dispensing head and the pump base, snap beads to retain the piston and dispensing head in a secured shipping position, and recyclable locking rings disposed between the dispensing head and pump base which prevent an active dispensing head from being actuated.

A new configuration damper, for interconnecting two elements of a structure that undergo relative movements and deformations, that increase the level of damping when the overall structure is subjected to a loading condition is disclosed. The new configuration damper aides in controlling displacements, velocities and accelerations under dynamic loading in structural systems.

A linear compressor having a dynamic vibration-reducing unit, which is provided at a stopper, by which separation of a cylinder block is prevented, for eliminating vibration generated from a hermetically sealed container at a specific frequency band. The dynamic vibration-reducing unit comprises an elastic member disposed at the lower end of the stopper, and a mass member fixed to the bottom part of the elastic member. The elastic member is formed in the shape of a spiral plate. The elastic member is provided at the center part thereof with a through-hole, which corresponds to an opening of the stopper. The elastic member is provided symmetrically at both ends thereof with fixing parts for fixing the mass member. The mass member is formed in the shape of a plate. The mass member is provided at the center part thereof with a hollow part, which corresponds to the through-hole of the elastic member. Through the hollow part of the mass member are inserted supporting parts of the stopper frame. Both sides of the mass member are symmetrical to each other centering on the hollow part so that both ends of the mass member are fixed to the fixing parts of elastic member by means of welding or bolts.

End mounts are used to secure a helical tension spring to end fixtures with various shapes and sizes. These end mounts contain an inner hole to encase the inner spring end mount and secure the end mount making it like a cap. There is also a keyhole created in the top surface that goes through the end mount allowing it to fit over the fixtures but not over the inner end mount, holding it in place. Grooves are machined in a helical pattern on the cylindrical side wall of the end mount. The spring is wound onto the grooves of the end mount.

The invention relates to an anti-collapse multi-layer metal corrugated pipe solid-liquid mixed vibration isolator. The vibration isolator comprises a corrugated pipe container, hydraulic oil, compressible elastic rubber units and circular sticking patches, wherein the corrugated pipe container is loaded with a solid-liquid mixed medium composed of the hydraulic oil and the compressible elastic rubber units; the compressible elastic rubber units can be filled with air, pressurized gas or be vacuumized; and the circular sticking patches are welded to the top end and the bottom end of the corrugated pipe container to seal the corrugated pipe container. The vibration isolator has good vibration isolation performance and can effectively improve the anti-collapse capacity of structures. The vibration isolation effect can be adjusted by changing the number of the compressible elastic rubber units, and meanwhile the problem of oil leakage is avoided by adopting multiple layers of corrugated pipes. Alloy materials used for making the corrugated pipes has the multiple advantages of oil resistivity, corrosion resistance, heat resistance, lowest aging and the like.

The invention provides a bellow-type mixed medium vibration isolating and absorbing unit comprising a bellow. Both ends of the bellow are fixedly connected to an upper end plate and a lower end plate to form a bellow container; the bellow container is arranged in a pilot sleeve; the bottom of the bellow container is fixedly connected with the pilot sleeve; a gap is reserved between the side wall of the bellow and the side wall of the pilot sleeve; the bellow container is provided with an opening; a liquid-solid mixed medium which consists of elastic unit bodies and liquid is filled in the bellow container; the top of the pilot sleeve is fixedly connected with a limit disc for preventing the upper end plate from slipping; an upper connecting rod is connected with the upper end plate after passing through the limit disc; and a lower connecting rod is connected with the bottom of the pilot sleeve. By the scheme of the invention, the leakage problem of liquid and gas is thoroughly avoided. The mixed medium vibration isolating and absorbing unit has the advantages that the carrying capacity is high, the natural frequency is low, the structure is simple, the use and the maintenance are convenient and the vibration isolating and absorbing performance can be flexibly regulated by increasing and decreasing the number of the elastic unit bodies.

The invention discloses a buffer spring plate. The buffer spring plate comprises a middle plate, wherein two ends of the middle plate are symmetrically provided with buffer plates, the middle plate comprises two arc-shaped plates, the two arc-shaped plates are oppositely arranged, and the buffer plates are of V-shaped structures. The buffer spring plate disclosed by the invention has the advantages that the structure is simple, the effect of carrying out two-stage buffering on an impact force through the buffer action of the buffer plates and the middle plate can be achieved, the buffer effect is good, the service life is long, the cost is reduced, and the promotion and the use are easy.

A magnetic flow variation damping type power-driven shock and vibration absorption device, comprising a linear electric motor having a straight guide, a straddle, a magnetic flow variation damping apparatus and a metal spring. The invention also discloses the process for mounting the device. The beneficial effect of the invention is, the active vibration damper possesses good non-linear damping vibration performance.