30results about "Vibration dampers" patented technology

A spring return cartridge for a rotary actuated valve includes a torsion spring having a spring load intermediate portion extending between a first end and a second end, and a spring carrier covered by the torsion spring. The spring carrier includes a first portion rotatably fixed to the first end of the torsion spring and a second portion rotatably coupled to the second end of the torsion spring. The second portion of the torsion spring is rotatable relative to the spring carrier and relative to the first end of the torsion spring between a first rotational limit position and a second rotational limit position. The intermediate portion of the torsion spring biases the second end of the torsion spring to the first rotational limit position and maintains a spring loaded state at the first rotational limit position.

A pendulum weight for a centrifugal pendulum absorber for a flywheel of a vehicle (3), comprising: - at least one bearing surface configured to, when the pendulum weight is mounted radially outside of a central axis of the pendulum absorber, cooperate with at least one corresponding bearing surface provided on a separate part of the pendulum absorber, with respect to which separate part the pendulum weight is thereby configured to be movable along a predetermined pendulum path, - at least one pocket formed in connection with the bearing surface, the pocket being configured to receive at least a portion of the separate part when the pendulum weight moves along the pendulum path, wherein the pendulum weight comprises an outward portion and a separate inward portion which are assemblage to form the pendulum weight, the outward portion being configured to be located radially outside of the inward portion with respect to the central axis when mounted, wherein the bearing surface and the pocket are both provided on one of said portions.

This disclosure relates to the geometry of a balance ring. A ring-shaped component assembly for mounting to a shaft of an aircraft engine is provided. The assembly includes a first annular body having a surface defining a plurality of pull features extending from the remainder of the surface and circumferentially spaced apart. The assembly includes a second annular body defining a balance ring concentric with the first annular body, the balance ring having a plurality of protrusions and circumferential spaces between adjacent protrusions, the circumferential spaces accommodating the pull features such that the pull features of the first annular body are clamped to the protrusions.

Film riding dampers for rotating components are disclosed herein. An example damper assembly for a rotor includes a body including a first surface to form a first thin-film interface with the rotor, and a second surface to form an interface with a stator, and a damper rigidly coupled to the body including a casing including a damping medium and a plunger within the casing.

A damper assembly for a rotor. The damper assembly includes a body. The body includes a first surface forming a first diaphragm interface with the rotor and a second surface forming an interface with a stator. The damper assembly further includes a damper rigidly coupled to the body. The damper includes an enclosed housing. The enclosed housing includes a damping medium and a plunger within the housing.

This invention discloses a noise reduction and stabilization construction device and its construction method for civil engineering road construction. The invention relates to the field of road construction technology and includes a soundproof enclosure. The left side of the outer wall of the soundproof enclosure has an insertion interface, and the right side of the soundproof enclosure is fixedly connected to an insertion plate. The outer wall shape of the insertion plate is consistent with the inner wall shape of the insertion interface, and the positions of the insertion interface and the insertion plate on the soundproof enclosure are correspondingly arranged. Sealing plates are provided on both the left and right sides of the soundproof enclosure. The outer wall of the sealing plate contacts the outer wall of the soundproof enclosure. A bolt connecting plate is fixedly connected to the upper side of the sealing plate, and one side of the bolt connecting plate extends to the upper side of the soundproof enclosure. The outer wall of the bolt connecting plate is fixedly connected to the outer wall of the soundproof enclosure by bolts. This invention can reduce the vibration of the ground caused by the impact of construction machinery by using a water-filled bag that adheres to the ground, thereby reducing the noise source. It has the characteristics of strong practicality and is beneficial for reducing road construction noise.

The invention relates to a shaft device (10) for a drive train (100) of a motor vehicle (K), comprising an inner shaft (20) which is formed from an inner shaft material and has respective coupling areas (12, 14) at opposing inner shaft ends (22, 24) of the inner shaft (20), via which the shaft device (10) can be coupled to respective drive components of the drive train (100) in a torque-transmitting manner, and a sheathing arrangement (50) which has at least a first sheathing (60) which is rotationally fixed to the inner shaft (20) between the inner shaft ends (22, 24) and is formed from a sheathing material different from the inner shaft material and having higher damping properties compared to the inner shaft material.The first sheathing (60) has two first sheathing regions (62, 64), which, in contrast to at least one first intermediate sheathing region (66) of the first sheathing (60) arranged between the two first sheathing regions (62, 64), are each rotationally fixed to the inner shaft (20). Further aspects of the invention relate to a drive train (100) and to a motor vehicle (K).

The invention relates to a torsional vibration damper (10) for reducing torsional vibrations in a drive train of a vehicle, comprising an inner component (14) rotatable about an axis of rotation (12), several circumferentially spaced spoke springs (16), an outer component (18) rotatably connected to the inner component (14) via the spoke springs (16) and rotatable to a limited extent relative to the inner component (14) against a spring force of the spoke springs (16), and at least one friction element (42) arranged frictionally between the inner component (14) and the outer component (18), wherein at least one of the spoke springs (16) is coupled to the friction element (42) by forming a free angle (50) which allows rotation between the spoke spring (16) and the at least one friction element (42).

The application discloses a radial grading torque limiter damper, comprising a damper subassembly and a torque limiter subassembly, a first-stage torque limiter is generated by a smaller-diameter friction pair, and a second-stage torque limiter is generated by a larger-diameter friction pair, so that the function of grading torque limiter is realized. The application has the advantages that the torque limiter function is provided by the cylindrical friction pair, and the number of parts of the torque limiter subassembly is reduced compared with the traditional ring-type friction pair.

The eddy current damper (10) of the present invention includes a conductive member (1), a magnet holding member (2), a plurality of permanent magnets (3), and sliding members (91, 92). The magnet holding member (2) is disposed inside the conductive member (1). The permanent magnets (3) are held by the outer peripheral surface of the magnet holding member (2) and are opposite to the inner peripheral surface of the conductive member (1) separated by a gap (G). Protrusions (11, 12, 21, 22) are provided on one or both of the inner peripheral surface of the conductive member (1) and the outer peripheral surface of the magnet holding member (2). When the damper (10) is viewed in cross-section along the central axis, gaps (g1, g2) are formed between the protrusions (11, 12, 21, 22) and the opposite portions. The gaps (g1, g2) between the protrusions (11, 12, 21, 22) and the opposite portions are smaller than the gap (G) between the inner peripheral surface of the conductive member (1) and the permanent magnets (3). The sliding member (91, 92) is disposed in the portion opposite to the protrusion (11, 12, 21, 22), the inner peripheral surface of the conductive member (1), or the outer peripheral surface of the magnet holding member (2).

This invention provides a fully submersible vibration-damping system that uses vibration energy to drive seawater reaction force, comprising: a support frame, a flow guide, and a seawater reaction force turbine and an electromagnetic damper placed within the flow guide. The electromagnetic damper is connected to the seawater reaction force turbine, and the support frame and the flow guide are connected to the seawater reaction force turbine. The flow guide and the seawater reaction force turbine are mounted on the outside of the columns of the floating platform to be vibration-damped via the support frame. The flow guide restricts the direction of seawater flow, and the seawater reaction force turbine provides a counterforce based on the inflowing seawater to prevent the flow guide from sinking or floating. The electromagnetic damper provides rotational damping for the seawater reaction force turbine. This invention solves the problems of poor vibration reduction effect and high cost of existing floating wind turbines.

The present application relates to a kind of Halbach electromagnetic quasi-zero stiffness vibration isolation platform, including storage platform, bottom plate and be arranged between the positive stiffness component, negative stiffness component and active electromagnetic component.Positive stiffness component includes telescopic guide rod, spring and adjusting washer arranged on the bottom plate, one end of spring is connected with storage platform, the other end is connected with adjusting washer;Negative stiffness component includes fixed housing, fixed magnet array and moving magnet array;Active electromagnetic component includes metal coil.Fixed magnet array is vertically arranged by a plurality of first fixed magnet and second fixed magnet according to Halbach array, moving magnet array is vertically arranged by a plurality of moving magnets, and the sum of vertical positive stiffness of spring is equal to the maximum negative stiffness of moving magnet array.Compared with prior art, the present application effectively improves the vibration isolation performance of vibration isolation platform, and can be widely applied to the occasion with higher vibration isolation requirement.

The invention relates to a plastics spring (11) for use in a pump dispenser (13) comprising a first spring element (15a) and a second spring element (15b), which can be pushed one into the other axially from a basic position, the spring force being generated in that, when the two spring elements (15a, 15b) are pushed one into the other axially, the first and the second spring element (15, 17) elastically deform. The first and the second spring element (15a, 15b) have a respective horizontal holding element (17a, 17b). An equal plurality of spring feet (19) protrude from each holding element (17a, 17b), which spring feet (19) have a curvature and an open end (21).

A power transmission system including: a motor that includes a rotor, and a stator provided outside the rotor and movable in a rotation axis direction of the rotor; a moving member that is connected to the stator and movable in the rotation axis direction; a clutch that disables transmission of power between the rotor and a power transmission member, in conjunction with movement of the moving member; a power source that applies a voltage to a coil wound around the stator and the moving member, and an operation control part that switches between a connected state where the clutch transmits power and a disconnected state where the clutch does not transmit power, by causing the power source to apply a voltage to the coil to move the stator in the rotation axis direction of the rotor.

A pressure balanced valve with integral pressure relief function is disclosed. The pressure relief valve includes a cap with an opening therein, a plunger configured to fill the opening in the cap, and a spring configured to hold the plunger against the cap. The pressure relief valve providing a fluid pathway through a piston, wherein the fluid pathway extends between a first fluid chamber and a second fluid chamber and provides a bypass for fluid to flow from the second fluid chamber to the first fluid chamber when a pressure of a fluid in the second fluid chamber is above a blow-off pressure of the pressure relief valve.

The present invention relates to a flywheel (1) for a drive train (2) of a motor vehicle (3), with a rotation axis (5) extending along an axial direction (4) and arranged coaxially thereto with a main flywheel mass (7) forming an input side (6), a torque limiting device (8) arranged downstream of the main flywheel mass (7) in a torque transmission path extending from the input side (6), and a torsional vibration damper (9) arranged downstream of the torque limiting device (8) in the torque transmission path; wherein the main flywheel mass (7) has a first stop surface (12) arranged in a radial direction (10) outside the torque limiting device (8) and the torsional vibration damper (9) and extending circumferentially (11);wherein a plurality of mass segments (13) are arranged on the main flywheel (7), immediately adjacent to the first stop surface (12) and distributed along the circumferential direction (11), which in operation of the flywheel (1) are supported on the first stop surface (12) against the radial direction (10).

This invention discloses a vibration damping mechanism for a floating platform and its usage method. The vibration damping mechanism is positioned between a marine buoy and the floating platform. The mechanism includes a mounting plate on the marine buoy, a hopper on the mounting plate, and several sets of electromagnets and rubber columns alternately arranged inside the hopper. The electromagnets have opposite polarities. A contact friction plate, connected to the floating platform, is located at the top of the hopper and passes through the hopper, abutting against the electromagnets or rubber columns. Spring damping components are located on both sides of the contact friction plate, with one end connected to the contact friction plate and the other end connected to the mounting plate. This invention combines active and passive vibration damping, enabling it to adapt to different vibration conditions and improving vibration damping performance and reliability.

A vacuum pump, particularly a turbomolecular vacuum pump, includes a housing and a rotor shaft disposed within the housing and rotatably supported by at least one permanent magnetic bearing, the magnetic bearing being disposed at one end of the rotor shaft, the magnetic bearing including a stationary bearing element and a rotating bearing element disposed radially adjacent to one another, and an eddy current damper having a conductive disk coupled to the stationary bearing element.

The invention relates to a device (20) having a housing (22), a shock mounting (24) and a spring element (26). An electrical circuit (28) is arranged in the housing. The shock mounting (24) is designed to damp a shock on the electrical circuit so that a mechanical load on the electrical circuit is reduced relative to a mechanical load on the housing due to the shock. The spring element (26) contacts the electrical circuit and the housing (22), the spring element (26) being designed to dissipate the heat of the electrical circuit to the housing (22).

The invention relates to a balance shaft comprising: - an unbalance shaft (1) having an unbalance section (9, 10, 11, 12) and an adjacent bearing pin (3, 4) with an only partially cylindrical circumference, the cylindrical part-circumference (7) of which is oriented towards the unbalanced shaft mass, - a bearing ring (5) which surrounds the bearing pin, bears against the cylindrical part-circumference and delimits a free space together with a radially opposite bearing pin back, - and a clamping element (15) which is clamped in the free space and clamps the bearing ring radially against the cylindrical part-circumference. The clamping element is intended to secure the bearing ring against axial sliding on the bearing pin on both sides, the clamping element being connected in an axially interlocking manner to the unbalance shaft on one side and to the bearing ring on the other side.

A damper that dampens vibrations of a crankshaft of a vehicle is disclosed. The damper includes a hub having a circular wall extending about an axis of rotation to define a bore formed therethrough. The wall includes a stepped portion extending radially from the wall and having a first arcuate portion formed thereon. The hub includes a main body portion extending radially from the wall to a lip to define an open cavity. The damper further includes an inertia ring disposed in the open cavity to provide inertia of the damper and a plate disposed on the lip of the hub and extending to the step of the wall to enclose the inertia ring in the open cavity. The plate abuts the wall and has a second arcuate portion arranged to cooperate with the first arcuate portion to define a hollow channel disposed radially about the wall of the hub. The damper includes a weld nugget interposed between the hub and the plate. The weld nugget has a root portion extending coincident with the axis of rotation through the hub and the plate to join the hub and the plate. The root portion has a tip defining a profile such that the hollow channel is disposed at an angle tangent to the profile.