81results about "Rotating vibration suppression" patented technology

To provide a power transmission device that can be made low-cost. [Solution] The power transmission device comprises a drive plate and a torque limiter. The torque limiter comprises a first side plate, an inertia member, a friction plate, and a biasing member. The first side plate is configured to be positioned on a first axial side relative to the drive plate. The first side plate is configured to rotate integrally with the drive plate. The inertia member is positioned on a first axial side relative to the first side plate. The inertia member is configured to rotate integrally with the first side plate. The friction plate is positioned to rotate relative to the first side plate. The pressure plate clamps the friction plate in cooperation with the first side plate. The biasing member biases the pressure plate axially toward the first side plate.

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 utility model discloses a vibration damping structure for an engine front cover, including an outer shell. A vibration damping turbine is installed inside the outer shell, and the turbine is connected to the outer shell via vibration damping bolts. A sealing cover is installed on one side surface of the turbine, and a sealing front cover is detachably installed on the side surface of the sealing cover. A cooling impeller is installed between the vibration damping turbine and the outer shell. This utility model provides convenient sealing and assembly of the engine front cover components, using vibration damping bolts to connect and align the various cover shells. It offers advantages such as good sealing and a tight, stable connection, effectively preventing the shell from loosening due to significant engine vibration during operation. Simultaneously, the internal and external heat dissipation design of the shell allows for rapid heat dissipation from the engine, providing excellent cooling performance. The planetary gear transmission mechanism integrated into the end cover shell, combined with an eccentric wheel structure, effectively reduces vibration at the shaft end.

The present disclosure provides a torsion spring damper having a compression limiter, a first disk, and a second disk. The first disk is disposed at a first end of the compression limiter, and the second disk is disposed at a second end of the compression limiter, wherein the second end is opposite the first end. The torsion spring damper also has a tension member. The tension member is connected to the first disk and the second disk. The tension member is comprised of a block copolymer.

This invention discloses a torsional electromagnetic negative stiffness vibration isolation system, relating to the field of torsional vibration control technology. It includes a torsional electromagnetic negative stiffness mechanism, a first positive stiffness torsional spring, and a second positive stiffness torsional spring. The torsional electromagnetic negative stiffness mechanism comprises a stator, a mover, and a coil. The stator is arranged around the mover, and the coil is wound around the mover. The outer surface of the mover has a mover tooth ring, and the inner surface of the stator has a stator tooth ring. The mover tooth ring includes multiple mover magnetic teeth evenly distributed circumferentially, and the stator tooth ring includes multiple stator magnetic teeth evenly distributed circumferentially. Stator slots are formed between adjacent stator magnetic teeth, and the mover magnetic teeth correspond one-to-one with the stator slots. One end of the mover is connected to a first support base via a first central shaft and a first positive stiffness torsional spring, and the other end is connected to a second support base via a second central shaft and a second positive stiffness torsional spring. This invention effectively isolates low-frequency torsional vibration, has a compact structure, adjustable stiffness, and no residual negative stiffness.

The present disclosure relates to a dual mass flywheel comprising a primary flywheel arranged about a rotational axis, a secondary flywheel arranged about the rotational axis and being rotatable relative to the primary flywheel, a main cover plate fastened to the primary flywheel, the secondary flywheel being arranged between the primary flywheel and the main cover plate in an axial direction, an elastic cover plate fastened to the secondary flywheel, extending towards the main cover plate at an angle to a radial direction and elastically biasing the main cover plate in the axial direction. The elastic cover plate comprises an anti-inversion portion for preventing an inversion of an extension angle of the elastic cover plate relative to the radial direction. The present disclosure further relates to a driveline comprising such a dual mass flywheel and a vehicle comprising such a driveline.

The invention relates to a magnetorheological brake (1), comprising: a rotor (3) which is provided so as to be rotatable about an axis (18); a mechanical interface (6) which is provided so as to be rotatable about the axis (18); and a securing portion (7) via which the rotor (3) is rotationally fixed to the mechanical interface (6), wherein the rotor (3) has a first rotor part (3.1) and a second rotor part (3.2), wherein the first rotor part (3.1) is designed to receive a braking effect and the second rotor part (3.2) is designed to damp the braking effect before transmission via the securing portion (7) to the mechanical interface (6). The invention also relates to a force feedback actuator (50), a steering device (100), a rotor (3), and a method.

The utility model relates to the technical field of side slope monitoring, specifically relates to a kind of inclination sensor structure for side slope monitoring, including stand, posture adjusting mechanism, sensor main body, power module, damper;The top end of the stand is fixedly connected with U-shaped seat, the posture adjusting mechanism is connected with U-shaped seat, and the damper is arranged at the connecting place of the posture adjusting mechanism and U-shaped seat;The sensor main body is fixedly connected at the top end of posture adjusting mechanism by magnetic attraction;The stand is connected with power module by support, and the power module and sensor main body are electrically connected between.The utility model overcomes the installation reference error caused by the unevenness of side slope foundation surface, guarantees the accuracy of sensor measurement reference, improves the reliability of monitoring data, simplifies the process of field installation debugging, reduces the debugging difficulty.

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 granular dampening component for use with an earth-boring tool that includes an inner portion and an outer portion that at least partially surrounds the inner portion. A granular material is disposed between the inner portion and the outer portion. The granular material configured to transfer torque from the outer portion to the inner portion and configured to dissipate energy based on differential motion of the granular material.

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).

A system for damping lateral vibrations includes a body configured to be connected to a downhole component of a system for performing a subterranean operation, the body having a longitudinal axis, and a cavity disposed within the body. The cavity has a selected width in an at least partially lateral direction, and the at least partially lateral direction has a directional component that is orthogonal to the longitudinal axis. The system also includes a moveable element disposed in the cavity, the moveable element being free to laterally move relative to the cavity in the at least partially lateral direction in response to a lateral vibration of the body. Lateral movement of the moveable element resists the lateral vibration and dampens a magnitude of the lateral vibration.

This invention discloses an energy-recovery type adjustable damping capacitive vibration damping device and its control method, belonging to the field of vibration control technology. The damping device includes a base plate, a mechanical transmission and flywheel assembly, an axial flux motor assembly, an electrical energy processing and storage assembly, and a control and sensing assembly. These components work together to form a structure-electrical-control integrated capacitive damping system. The mechanical transmission and flywheel assembly includes an upper rack, a lower rack, a small transmission wheel, a gear shaft, and a flywheel. This invention employs the aforementioned energy-recovery type adjustable damping capacitive vibration damping device and its control method. By adjusting the electromagnetic damping current in real time, continuous control of the capacitive damping force is achieved without changing the flywheel structural parameters. This effectively suppresses sudden changes in capacitive force during backlash switching and impact conditions, improving the device's operational stability and energy utilization efficiency.

A torsional vibration damper device (7) with a flange (8) rotatably mounted about a central axis and at least one damper mass (9) displaceable relative to the flange (8) under centrifugal force, characterized in that the damper mass (9) is displaceably mounted between two side elements (11a, 11b) opposite each other in the axial direction (A) of the torsional vibration damper device (7), and the side elements (11a, 11b) are rotationally fixed to the flange (8), wherein the damper mass is formed from several parts arranged adjacent to each other or spaced apart in the axial direction and not separately connected to each other, and each part of the damper mass (9) is pivotably mounted between the two side elements (11a, 11b) by means of several rollers (14) extending in the axial direction (A), wherein the rollers (14) extend in their central region through holes (2) in each part of the damper mass (9),wherein the axial ends (15a, 15b) of the rollers (14) are slidably mounted in corresponding recesses or openings (17a, 17b) of the side elements (11a, 11b), wherein the recesses or openings (17a, 17b) are essentially kidney-shaped, oval, or oblong.

An aspiration pump is may provide reduced noise output and improved visibility with a design that includes a housing having an internal cavity; a pump motor disposed in the internal cavity; a bolster plate, mounted within the internal cavity to the housing; a first plurality of vibration isolators, each mounted on a first end to the bolster plate and on a second end to the pump motor; and a second plurality of vibration isolators, each mounted to the housing outside of the internal cavity.

This invention provides a hybrid-mode MRE vibration isolator and its design method. The hybrid-mode MRE vibration isolator is installed on the drive shaft of rotating equipment and includes an irregularly shaped stacked MRE. The irregularly shaped stacked MRE is frustum-shaped, and contains multiple layers of spacers and MRE material layers arranged in parallel at intervals. The spacers are made of ferromagnetic metal. By employing a frustum-shaped stacked MRE with different upper and lower diameters, this hybrid-mode MRE vibration isolator reduces the dimension of the controlled object compared to existing cylindrical MRE vibration isolators. This hybrid-mode MRE vibration isolator directly transfers abnormal vibration energy from large rotating equipment to the MRE material through the drive shaft. The change in MRE stiffness can suppress abnormal vibrations. This vibration isolator is suitable for intelligent vibration reduction of large rotating equipment, especially in rotating shear applications.

This invention relates to the field of torque limiter pin technology, and discloses a 600KN heavy-duty pin for a torque limiter, comprising: a pin body disposed on the limiter, the pin body including a ball seat, a steel ball, a pin shaft, a disc spring assembly, a damping adjusting screw, a threaded pressure block, a threaded buffer sleeve, a cover, an anti-loosening screw assembly, a pin housing, a retaining ring, a wedge block assembly, and a spacer; the inner ring of the limiter has a ball groove, and the outer ring of the limiter has a through groove; the ball seat is fixedly installed in the ball groove by bolts, and the outer wall of the ball seat has a conical surface. This invention has a simple structure, reliable anti-loosening, good lubrication effect, low contact stress, and long service life; it can prevent screw loosening at any angle, and the load capacity is increased from the international maximum of approximately 330KN to over 600KN.

The utility model relates to the technical field of semiconductor chip processing discloses a rotary device for chip, including bottom plate, the top of bottom plate is provided with workstation, is provided with vacuum adsorption platform on the workstation, the inside of bottom plate is provided with motor, and the output of motor is connected with main shaft, and the main shaft is connected in the pivot of the bottom of upper vacuum adsorption platform through the shaft coupling, and motor drives vacuum adsorption platform rotation. The utility model through multiple structure cooperation promotes rotation stability, and the guiding support of rotating ring and fixed block reduces the shaking, and the counterweight sleeve and counterweight block balance the gravity center, and the damping ring absorbs the spindle vibration, and the interlayer foam aluminum and support foot weaken the overall vibration, and the multilink inhibits vibration and centrifugal deviation, improves rotation stability, and vacuum adsorption platform stable adsorption reduces the influence of shaking or vibration.

The utility model discloses a kind of torsional vibration damping disc for rotor system, it is related to rotor torsional vibration damping technical field, including disc, swing assembly, bearing, hinge hole bolt, protective shell, screw, nut, wherein swing assembly includes swing block and elastic limit block.Hinge hole bolt is sequentially passed through disc, protective shell, bearing, is connected with disc by nut, protective shell is connected with disc by screw, and elastic limit block is vulcanized with swing block and connects.Damping disc can swing around bearing by swing assembly left and right, so that centrifugal force is offset to generate, to generate the moment of force opposite torsional vibration direction, this will make torsional vibration be inhibited.Elastic limit block of rubber material can limit swing angle of swing assembly and absorb impact.The utility model structure is simple, easy to disassemble and assemble, maintenance cost is low, can be inhibited to the torsional vibration generated when rotor system works, prolong the service life of rotor system.

The present disclosure relates to a crankshaft damper and an engine. The crankshaft damper comprises a hub for torsionally connecting with a crankshaft, a cover plate provided with an inner gear on an inner periphery thereof, a spider spring connected between the hub and the cover plate in a radial direction, the spider spring being elastically deformed to enable the hub and the cover plate to rotate relative to each other, and a support washer torsionally connected with the hub at a radially inner end thereof, an outer periphery of a radially outer end of the support washer being provided with an outer tooth groove matched with the inner gear, a tooth width of the inner gear being smaller than a groove width of the outer tooth groove, and a rotation angle of the cover plate relative to the hub being limited by a collision abutment of the inner gear and the outer tooth groove. By the collision abutment of the outer tooth groove of the support washer and the inner gear of the cover plate, without increasing parts, the rotation angle of the cover plate relative to the hub is prevented from being too large, so that the spider spring is prevented from being broken by rotating more than a preset angle.

Dynamo-electric brake with: a universal self-centered system comprising an outer foundation (2) and a medial foundation (1) situated in a plane, wherein the outer foundation (2) encompasses the medial foundation (1), on each foundation (1, 2) three or more stars (14, 15, 16; 17, 18, 19) are rotatably mounted, and a closed chain (13) sequentially connects the stars (14, 15, 16; 17, 18, 19) on the outer foundation (2) and the medial foundation (1), and an electromagnet or electric motor, characterized in that the electromagnet or electric motor generates a torque between the foundations (1, 2) of the universal self-centering system, wherein the universal self-centered system includes gears (20, 21, 22) which are mounted on common axes with the stars (17, 18, 19) of one of the foundations (1, 2) and have toothed engagement with an output gear (23) on an output shaft (3) which is connected to a shaft of an object to be decelerated (12) and to the outer foundation (2).

The utility model discloses a rotary damper, it includes: damping connecting rod, damping connecting rod has square shaft part and waist round axle part, and the waist round axle part end is provided with outer thread, and is provided with the convex round handle part between square shaft part and waist round axle part, first rotation washer, first wear -resisting gasket, second rotation washer, second wear -resisting gasket, spring washer are in proper order and are set in the waist round axle part, and the thread cooperation waist round axle part of stop screw nut, and the spring washer between stop screw nut and spring washer sets up stop washer, the utility model discloses through the stop screw nut in end part spacing, and damping connecting rod rotation drives first rotation washer, first wear -resisting gasket, second rotation washer, second wear -resisting gasket, spring washer mutual extrusion and forms damping force, and the component is relatively simple, and the maintenance is convenient, and need not use spring, and the durability is higher.

To provide a rotary damper which enables torque to be generated according to a rotation speed of a rotary part and can secure a large rotation speed range.SOLUTION: A rotary damper 1 includes: a housing 2 having a cylindrical wall part 6; a rotary part 3 which may rotate relative to the housing 2; and a viscous fluid 5 disposed between the wall part 6 and the rotary part 3 and generates torque by viscous resistance of the viscous fluid 5. The rotary part 3 includes: a rotating body 15 including an opposing part 20 which opposes an inner periphery part of the wall part 6 and partially exposed from the housing 2; a movable body 16 disposed between the opposing part 20 and the wall part 6 and formed separately from the rotating body 15; and biasing means 35 which biases the movable body 16 in a direction away from the wall part 6. The movable body 16 is disposed in a movable manner so as to change a gap 33 between the wall part 6 and the movable body 16 according to a magnitude relation between a centrifugal force generated by rotation of the rotary part 3 relative to the housing 2 and a biasing force generated by the biasing means 35.SELECTED DRAWING: Figure 1

The utility model discloses a kind of wide frequency range's automobile half shaft shock absorber, belong to automobile parts technical field, including rubber matrix, at least two mass blocks and multiple rib strips;Rubber matrix is sleeve-like, is equipped with mounting hole and is provided with annular clamping groove, and one end forms mounting port;Mass block is covered in rubber matrix along axial direction interval, mass and material density gradually decrease from mounting port end;Mounting hole peripheral wall is provided with recess, and rib strip is embedded in recess and is formed heat dissipation cavity with half shaft gap cooperation.Formation multiple frequency band damping subsystem by gradient mass block and interval groove design, effectively cover wide frequency range, cooperate composite heat dissipation and antiskid structure, adapt to full working condition vibration demand, improve damping stability and service life.

To suppress vibrations in the drive shaft. [Solution] The dynamic damper 8 is set such that the frequency fa at which the vibration level of the waveform W1 of the drive shaft 7 is minimized is lower than the resonant frequency fv caused by bending resonance of the drive shaft 7 when the dynamic damper 8 is not installed. The resonant frequency fv is the frequency at which the vibration level of the waveform W2 of the drive shaft 7 is maximized when the dynamic damper 8 is not installed. Furthermore, the dynamic damper 8 is set such that the high-frequency resonant frequency fb of the drive shaft 7 is higher than the frequency f1 of vibration that occurs when the engine speed in the normal operating range of the internal combustion engine 3 is at its maximum.

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.

The phase control of the electric balancer device is performed stably and simply by offsetting the detected phase difference signal and the target phase difference signal. [Solution] If at least one of the phase difference signal C detected based on the phase signals from the propulsion engine 1 and the electric balancer device 2, and the target phase difference signal input from the phase setter 9, is located inside a specific region z1 set near the switching point G when the phase signals are displayed as rotation angles, a predetermined offset operation is performed so that both the detected phase difference signal and the target phase difference signal are located outside the specific region.