396results about How to "Reduce vibration transmission" patented technology

A system for transferring torque between a pair of independently, concurrently rotating shafts of a turbofan engine includes a magnetic gearbox. The magnetic gearbox has a first ring structure, a second ring structure and an intermediate ring structure. Each ring structure has an annular aperture therethrough and a plurality of permanent magnets embedded therein. The intermediate ring structure is disposed between the first and the second ring structures. Each ring structure is coaxially concentric with, and independently rotatable with respect to the remaining ring structures. The first and second ring structures are each coupled to separate ones of the rotating engine shafts, and the intermediate ring is operable to transfer torque between the pair of shafts. Preferably, the intermediate ring structure is coupled to a rotating machine. The rotating machine has a controller, and is operable for adjusting a ratio of torque transferred between the pair of shafts.

A power toothbrush including a handle and a brush head with bristles. In one embodiment, the toothbrush includes vibratory means for causing the brush head and the bristles to vibrate, and vibration isolation means for reducing the transfer of vibrations from the vibratory means to the handle. The vibratory means can include an eccentric motor positioned in the brush head or the brush shaft of the toothbrush. Vibration dampening material can be included in the vibration isolation means to reduce the transfer of vibrations to the handle.

A system for transferring torque between a pair of independently, concurrently rotating shafts of a turbofan engine includes a magnetic gearbox. The magnetic gearbox has a first ring structure, a second ring structure and an intermediate ring structure. Each ring structure has an annular aperture therethrough and a plurality of permanent magnets embedded therein. The intermediate ring structure is disposed between the first and the second ring structures. Each ring structure is coaxially concentric with, and independently rotatable with respect to the remaining ring structures. The first and second ring structures are each coupled to separate ones of the rotating engine shafts, and the intermediate ring is operable to transfer torque between the pair of shafts. Preferably, the intermediate ring structure is coupled to a rotating machine. The rotating machine has a controller, and is operable for adjusting a ratio of torque transferred between the pair of shafts.

A power toothbrush including a handle and a brush head with bristles. In one embodiment, the toothbrush includes vibratory means for causing the brush head and the bristles to vibrate, and vibration isolation means for reducing the transfer of vibrations from the vibratory means to the handle. The vibratory means can include an eccentric motor positioned in the brush head or the brush shaft of the toothbrush. Vibration dampening material can be included in the vibration isolation means to reduce the transfer of vibrations to the handle.

A control system for a lawnmower includes a handlebar connected to the lawmnower for controlling direction and speed of travel of the lawmower based on a position of the handlebar relative to the lawnmower. The control system is connected to a drive system of the lawnmower such that changing the elevation of the handlebar adjusts operation of a number of wheel drive units and turning of the handlebar relative to the lawnmower adjusts operation of one wheel drive unit relative to another wheel drive unit.

A washing machine capable of reducing operational noise of a drainage pump. The washing machine includes a water tub installed in an outer case, a drainage pump adapted to drain wash water from the water tub, and a fixing device adapted to fix the drainage pump. The fixing device includes a support member extending from the drainage pump, vibration-proof members arranged to support an outer surface of the support member, and fixture members fixed to an inner surface of the outer case and adapted to support outer surfaces of the vibration-proof members.

The invention discloses a physiological parameter monitoring system with a comb filter and a monitoring system for the depth of sleep. External interference signals which are transmitted onto a bed from a floor are eliminated by a unique technology so as to improve the measurement precision of the detecting system. A sensor acquires physiological signals of a human body, and data are processed by the comb filter, so that signal waveforms of heart rate numbers, breathing numbers and the turnover frequency of the human body can be acquired, the data of sleep stages are continuously extracted, and a sleep status is presumed according to high-precision pulse and body movement data. In addition, a sleep stage classification technology and a unique sleep presumption technology are adopted for a sleep stage algorithm for speculating the depth of the sleep, so that the sleep stage presumption accuracy is improved, and the measuring system can precisely detect sleep indexes.

An interposer includes a plurality of first connection electrodes each of which is arranged on either of first- and second-side-surface sides of a first principal surface of a substrate; a plurality of second connection electrodes each of which is arranged on either of first- and second-side-surface sides of a second principal surface of the substrate; and a plurality of third connection electrodes each of which is arranged on either of first and second side surfaces. Each of the first connection electrodes has a first portion located away from an edge of the first principal surface, and a second portion extending from the first portion to the edge and connected to the third connection electrode. Each of the second portion of each first connection electrode and the plurality of third connection electrodes has a width smaller than a width of the first portion of each first connection electrode.

The invention relates to the field of wind power generation, and particularly discloses a wind power generation device. The device comprises a generator and a square tank, the lower portion of the generator is located in the square tank, a vertical shock absorber is arranged between the bottom plate of the square tank and the bottom surface of the shell of the generator, and transverse shock absorbers are arranged between the four side plates of the square tank and the side surfaces of the shell of the generator; the vertical shock absorber comprises a first shock absorbing mechanism and second shock absorbing mechanisms, wherein the first shock absorbing mechanism comprises an outer sleeve cylinder, a base assembly and a fixing assembly; the second shock absorbing mechanisms comprise twoelastic shock absorbing plates symmetrically fixed to the shell of the generator and pouring bags arranged between the elastic shock absorbing plates and the bottom plate of the square tank, and the transverse shock absorbers comprise outer cylinders fixed to the side plates of the square tank and inner cylinders slidably arranged in the outer cylinders in a sleeved mode. By means of the wind power generation device, shock absorbing and noise reduction can be effectively conducted on the generator, occurrence of resonance between the generator and external environment is prevented, smooth andstable operation of the generation device is ensured, the noise produced by the generator during work is reduced, and the noise pollution is reduced.

The invention discloses a three-dimensional shock isolation device. The three-dimensional shock isolation device comprises at least one three-dimensional shock isolation unit arranged between two embedded plates. Each three-dimensional shock isolation unit is composed of a horizontal shock isolation device and a vertical shock isolation device, wherein the horizontal shock isolation device and the vertical shock isolation are arranged in a vertical series connection mode. The horizontal shock isolation device is a vertical column-shaped elastic body arranged in a vertical mode in the axial direction, and the horizontal shock isolation device carries out elastic deformation through radial displacement deformation and torsion angle displacement deformation of the vertical column-shaped elastic body. The vertical shock isolation device is formed by parallel connection of at least three inclined column-shaped elastic bodies with equal dimensions so as to form a winding assembly body space structure, and therefore vertical deformation stood by the vertical shock isolation device is converted into inclined displacement and torsion placement of the inclined column-shaped elastic bodies. The three-dimensional shock isolation device can isolate three-way earthquake and environment vibration at the same time, and therefore shock / vibration response and shock / vibration delivery of a protected structure or device adopting the three-dimensional shock isolation device and under the effects of earthquake / the vibration can be controlled effectively, and safety under the effects of earthquake / the vibration can be guaranteed.

The invention provides a take-off and landing platform for assisting an aircraft to take off and land in a bumpy environment. The take-off and landing platform comprises a fixing plate and an attitude adjustment seat, wherein the fixing plate is used as a platform where the aircraft takes off and lands, and is used for fixing the aircraft before the aircraft takes off; the attitude adjustment seat is mounted on the lower side of the fixing plate and is used for stabilizing a space attitude of the fixing plate; and the attitude adjustment seat is at least provided with two degrees of freedom capable of rotating around the X axis and the Y axis. The multi-axis aircraft is fixed on the fixing plate before taking off, and the attitude adjustment seat dynamically stabilizes the attitude of the aircraft, so that the aircraft can be prevented from swinging back and forth, and good take-off conditions are supplied to taking off; and the stable fixing plate can supply a good landing environment to the multi-axis aircraft.

A food processor is provided with a wide feed tube. The food processor has a pusher that cooperates with a safety mechanism. The safety mechanism comprises a linkage assembly that prevents the food processor's motor from operating unless the pusher is inserted into the feed tube.

The invention discloses a system for presuming sleep indexes and sleep stages by a method for measuring physiological parameters in an unconstrained manner. The system has the advantages that a unique technology for eliminating external interference signals transmitted from a floor to a bed is adopted to improve the measurement precision of the detecting system; physiological signals of a human body are acquired by a senor, and data are processed by a comb filter, so that signal waveforms of heart rate numbers, breathing numbers and the turnover frequency of the human body can be acquired, the data of the sleep stages can be continuously extracted, and a sleep status of the human body can be presumed according to high-precision pulse and body movement data; and a sleep stage classification technology and a unique sleep presumption technology are adopted for a sleep stage algorithm for speculating the depth of sleep, so that the sleep stage presumption accuracy is improved, and the measuring system can precisely detect the sleep indexes.

The present invention discloses a linear compressor including: a hermetic container which defines a sealed space where a refrigerant flows in and out and which has an inlet pipe and an outlet pipe; a cylinder provided in the hermetic container and having a compression space therein; a piston linearly reciprocated in the cylinder and compressing the refrigerant of the compression space; a linear motor supplying a driving force to the piston and operating the piston at a set operating frequency; a plurality of support springs elastically supporting an assembly composed of the cylinder, the piston and the linear motor on the bottom surface of the hermetic container; and a loop pipe provided to guide the refrigerant compressed in the compression space to the outlet pipe. As the exciting force exerted on the hermetic container by the loop pipe has an opposite phase to the exciting force exerted on the hermetic container by the support springs, vibration of the assembly can be offset by vibration of the loop pipe through the phase shift, and thus the overall vibration can be reduced.

The invention relates to a fourth-generation hub bearing unit which is capable of generating rotation-adapted transformation. The invention solves the problem that the weight is increased because of the enlarged size of the hub which is caused by the integrated structure of the wheel hub and a constant-velocity universal joint. The invention is characterized in that a rear end step of a long end shaft neck of a ring flange is fixed with a bell-like shell and supports against an internal ring, the tail end surface of the long end shaft neck is set into rolled edge which envelops the bell-like shell; the bell-like shell is internally provided with a constant-velocity driving shaft double offset universal joint, the bell-like shell is an external supporting ring of the constant-velocity driving shaft double offset universal joint, the internal wall of the bell-like shell is provided with axial rolling ways, and the constant-velocity driving shaft double offset universal joint is capable of rotating along the axial rolling way. The bell-like shell and the ring flange are individually arranged, the small diameter end of the bell-like shell is arranged to directly lock the step at the tail end of the long end shaft neck and to support against the internal ring so as to reduce the size and the weight of the ring flange, therefore, miniaturization is achieved, and the installation is more reasonable.

The invention discloses an energy dissipation three-dimensional isolation bearing with oblique slide damping, which comprises a three-dimensional isolation device which is arranged between an upper structure and a foundation bearing platform. The three-dimensional isolation device is composed of horizontal isolation units, a friction energy dissipation unit and a vertical isolation unit which are in up-and-down serial connection. The horizontal isolation units are vertical lead rubber bearing are in axial vertical installation. The friction energy dissipation unit consists of an upper friction card slot and a lower friction card slot which are respectively in buckle connection. Through the sliding friction of contact surface , the initial support and dissipation shock / vibration energy is provided, and a certain tensile function is produced. The vertical isolation unit comprises at least two dimensions tilting the lead rubber bearing in parallel connection, which forms a set of cylindrical structure with symmetrical space. The vertical deformation of the vertical isolation unit is transferred into the inclined deformation and expansion displacement of an inclined rubber bearing. The energy dissipation three-dimensional isolation bearing with oblique slide damping also isolates three-direction earthquake and environmental vibration. By using the device of the protected structure or equipment under earthquake vibration / shock / vibration response and shock / vibration transfer will be brought under effective control, and the safety is protected under shock / vibration.

The invention discloses a wave absorbing device used for eliminating and reducing noise and pulses of hydraulic system fluid. The wave absorbing device used for eliminating and reducing the noise and the pulses of the hydraulic system fluid comprises a cylinder body, a front end cover, a back end cover, inner pipes, gaps relative to the inner pipes, a through hole, damping holes, sound absorption material, damping vibration attenuation material, a sealing ring, an installation screw hole, an anti-skidding bolt and the like. Threads are arranged on the cylinder body, and the front end cover and the back end cover are fixed on the cylinder body. Circular grooves are formed in the front end cover and the back end cover, and inner pipes in different shapes are fixed on the front end cover and the back end cover. Threads are arranged on the back end cover, used for connecting with the cylinder body, and press tightly the front end cover through an inner pipe structure with an outer flanging. The inner pipes are fixed on the end covers in a directly inserted mode, structures such as the gaps and damping holes are arranged on the inner pipes, and through inner pipes with different inner pipes, a cylinder body inner cavity is divided into parts which are communicated through the damping holes. The sound absorption material is formed by non-metal material and attached to the inner side of the cylinder body, vibration attenuation filler is filled in the connection position of the end covers and a shell body, and the wave absorbing device eliminates and reduces the noise and the pressure pulses in different frequency ranges of the hydraulic system fluid and is a wave absorbing device with a wide effective wave absorbing frequency range.

The invention discloses a vibration absorber for an air conditioner compressor, which comprises a supporting body, and a connecting piece which is respectively connected with the supporting body and a compressor body, wherein the connecting piece is fixedly connected with the compressor body; elastic vibration reducing components are arranged between the connecting piece and the supporting body, and comprise a vertical elastic vibration reducing component and a horizontal elastic vibration reducing component which are vertically and horizontally arranged between the connecting piece and the supporting body respectively. The elastic vibration reducing components between the supporting body and the connecting piece can reduce the vibration transmission of the compressor body on an external shell of an air conditioner, and have the functions of vibration reduction, supporting and fixation; and because the elastic vibration reducing components comprise the vertical elastic vibration reducing components and the horizontal elastic vibration reducing components which are vertically and horizontally arranged between the supporting body and the connecting piece respectively, the vibration absorber has good damping effect in both the vertical direction and the horizontal direction.

A MEMS assembly comprising a substrate and a MEMS device; wherein the MEMS device is connected to the substrate by at least two flexible support structures made in a conductive layer formed on a first portion of one of the substrate and the MEMS.

A window lift system includes a motor drive assembly (10) constructed and arranged to control movement window glass of a vehicle, and a door module (35) to which the drive assembly is coupled. The door module has surface features (36) disrupting a surface (37) of the door module to reduce the transfer of vibration energy from the door module to the drive assembly or vise versa. In an embodiment, the door module includes a diaphragm (34) and the surface features are annular, undulating, wave-like features in the diaphragm.

A suspension system of a suspension electric vehicle comprises a mounting beam, a vibration damping mechanism, a load bearing mechanism and a torsion resistance mechanism, wherein the vibration damping mechanism is integrally mounted on one end of the load bearing mechanism, the other end of the load bearing mechanism is connected to the power system, the vibration damping mechanism is connected to the mounting beam, one end of the torsion resistance mechanism is connected to the power system, and the other end of the torsion resistance mechanism is connected to the subframe. The load-bearingelement skeleton I and skeleton II are arranged on both sides of the power system, the damping element I is arranged on the skeleton I, and the damping element II is arranged on the skeleton II, so that the mounting beam is more force-bearing and the structure is more stable. By adjusting the direction of the rubber bushings in the damping element I and the damping element II, the stiffness of theentire suspension system in all directions is more reasonable, the limit capacity of the suspension system to the dynamic system is improved. The vibration damping element I is arranged on the frameI and the vibration damping element II is arranged on the frame II, so that the force on the mounting beam is more reasonable and the structure is more stable. The design of the anti-torsion mechanismimproves the anti-torsion ability of the whole system. The invention also discloses a method for using the suspension system of the suspension electric vehicle.

The invention discloses a chemical machinery system using a vertical reactor. A first reactor is a vertical reactor and comprises a vertical tank, a vertical mixer and a vertical jacket. The verticaljacket is arranged in the middle-lower part of the vertical tank. The vertical jacket and the vertical tank form an enclosed concave interlayer. The side of the vertical jacket is provided with two water inlets. The bottom wall of the vertical jacket is provided with a water outlet. The water outlet is connected to a first water pump through a switch.

Ultrasonic transducers (6, 7) are attached in a direction in which an O-ring (23) that is provided on a frame having a flow path is compressed. A biasing means (24) is provided which biases these ultrasonic transducers (6, 7) by coming into contact therewith at a plurality of locations. Screws (25) are provided which fix this biasing means (24) to the frame. An ultrasonic flow meter can therefore be implemented which makes it possible to use the O-ring (23) as a sealing means, is low cost, and facilitates signal processing by reducing vibrations of the ultrasonic transducers that are transmitted to the frame.

The invention discloses a blockage preventing device for a shotcrete pumping pipe. The blockage preventing device comprises an inner pipe, an outer pipe and self-oscillating rings, wherein the outer pipe is formed by connecting at least two unit pipes by connecting components, and a splicing length is free and flexible; one self-oscillating ring is arranged inside each unit pipe, so that the dominant function of oscillating blockage prevention is realized; the self-oscillating rings are arranged on the outer wall of the inner pipe in a sleeving way and the number of the self-oscillating rings is at least two, so that the oscillating efficiency is guaranteed; a pipe body of the outer pipe is made of polyurethane rubber (PUR), so that various outside contact conditions and oscillating reduction requirements are met; the inner pipe and the connecting components are made of polybutylene (PB), so that concrete is efficiently conveyed; by using all the functions of three parts, the concrete is efficiently conveyed, the problem of pipe blockage in the shooting process is better solved, and the working efficiency of the shotcreting is improved; meanwhile, the occurrence of pipe explosion accidents is avoided, and the safety of working is guaranteed.

The present invention discloses an aviation buffer rubber gasket and a production method thereof. According to the present invention, a silicon rubber with characteristics of ozone resistance, atmospheric aging resistance, excellent high temperature performance and excellent low temperature performance is selected as the material when the gasket main body is produced; a knitting fabric reinforced layer is wrapped on the gasket main body surface; during the manufacturing process, the crystal whisker reinforced dissolved slat mold core is added, such that the model problem of the cavity in the gasket main body is solved; the suitable temperature zone of the aviation buffer rubber gasket achieves -50-250 DEG C, the self-weight is reduced by 20%, and the vibration transmission is reduced by 80%; and the aviation buffer rubber gasket has characteristics of ozone resistance, improved atmospheric aging resistance, substantially-prolonged flying life, substantially-prolonged maintenance cycle, and aircraft repair and maintenance cost reducing.

Provided is a reinforcing structure for the front portion of a vehicle. The reinforcing structure comprises a mud blocking plate (3), an upper suspension carriage (4) and protruding edges (4b, 4c). The mud blocking plate is arranged on the corner portion (C) of an engine room (E) formed by a front enclosing plate (1) and a vehicle neck side plate (2). The upper suspension carriage is arranged on the upper portion of the mud blocking plate (3) and the vehicle neck side plate (2). The protruding edges are respectively arranged on the rear edge and the side edge of the upper suspension carriage (4). The upper suspension carriage (4) is jointed to the front enclosing plate (1) and the vehicle neck side plate (2) via the protruding edges. A reinforcing element (11) is disposed on the corner portion (C), is jointed to the front enclosing plate (1) and the vehicle neck side plate (2), and is L-shaped from the above of the vehicle. The rear part of the upper portion of the reinforcing element (11) and the upper suspension carriage (4) are jointed together to the front enclosing plate (1), and the side of the upper portion of the reinforcing element (11) and the upper suspension carriage (4) are jointed together to the vehicle neck side plate (2).

The present invention relates to a dryer motor assembly support that limits or eliminates cabinet vibration and noise. The dryer comprises a cabinet comprising a floor having an outside peripheral portion, and a central portion with four openings. The dryer further comprises a motor assembly, having a motor and motor mount comprising a base, spaced above the openings. A support assembly for supporting the motor assembly comprises two parallel spaced apart support portions each spaced below and spanning across the central portion, passing beneath the openings. Each support portion has oppositely disposed end portions secured with the peripheral portion. Each support portion comprises two projections extending therefrom toward the base. Each projection passes through a corresponding one of the openings with clearance to secure the support portion with the base, isolating the motor. The motor and support assembly, and the openings are co-located away from the central portion.

The invention provides an improvement device based on a conventional ship vibration isolation system. The improvement device comprises a vibration-isolated equipment machine frame and an elastic base, wherein a plurality of damping devices are arranged between the vibration-isolated equipment machine frame and the elastic base; a plurality of independent Euler buckled beams, which are arranged in the vertical direction or the horizontal direction, are connected in parallel between the vibration-isolated equipment machine frame and the elastic base. The invention also provides an improvement method based on the conventional ship vibration isolation system. The improvement method comprises the following steps of determining the negative stiffness needed by the Euler buckled beams according to the inherent frequency of the conventional ship vibration isolation system and an improved target frequency, and determining geometrical parameters and initial compression amounts of the Euler buckled beams through combination with stiffness formulas of the Euler buckled beams and mounting space on a ship; and mounting the selected Euler buckled beams between the vibration-isolated equipment machine frame and the elastic base. On the basis of not changing the conventional ship vibration isolation system, the inherent frequency of the conventional ship vibration isolation system is reduced, the vibration isolation effect is improved, the vibration transmission speed is reduced, and the sound stealth performance is improved.

Vacuum coating apparatus has a rotary cathode (10) mounted in a tubular process chamber. The cathode drive unit (6) is attached to the process chamber casing (3) by a flexible mounting. This consists of a flexible plate (14) attached only to the casing, the drive unit being only attached to the plate.

The invention discloses a combined vibration isolation device installed in a transformer oil tank and a design method. The device is installed at each of the joints of a transformer body in the transformer oil tank and a box body, and comprises a container, a metal rubber vibration isolation pad and a top cover, wherein the container is located at the lower portion, the metal rubber vibration isolation pad is installed in the container, and the top cover is arranged above the container; the periphery of an opening part of the upper end of each container is connected with a flange plate; corrugated pipes are connected between each flange plate and the corresponding top cover; and a damping spring vibration isolator is arranged between each metal rubber vibration isolation pad and the corresponding top cover. The combined vibration isolation device performs vibration isolation in allusion to different resonant frequencies of the transformer body in a manner of series connection combination of the metal rubber vibration isolation pads and the damping spring vibration isolators, and thereby, vibration transmission is weakened to the maximum degree, the vibration isolation bandwidth isincreased, and the goal of reducing the noise of the transformer is better achieved.