9046results about "Springs" patented technology

The invention discloses a nitrogen shock absorber and a shock absorption method thereof, and relates to the technical field of shock absorbers, the nitrogen shock absorber comprises an oil storage barrel, a piston rod, a lower connecting seat, an upper connecting seat, a central fixing pipe, a piston valve system assembly and a compression hydraulic buffer assembly; the piston rod is slidably connected with the oil reservoir; the lower connecting seat is fixed at one end of the piston rod; the upper connecting seat is mounted at one end of the oil storage cylinder, and a compression hydraulic buffer regulating valve system assembly, a compression high-low speed regulating valve system assembly and a nitrogen cylinder are mounted on the upper connecting seat; the center fixing pipe is fixed to the end, located in the oil storage barrel, of the piston rod. The piston valve system assembly is fixed to the outer wall of the center fixing pipe and divides the interior of the oil storage barrel into a recovery cavity and a compression cavity. The compression hydraulic buffering assembly comprises a hydraulic buffering rod, and the hydraulic buffering rod is communicated with the compression hydraulic buffering adjusting valve system assembly. The performance of the compression hydraulic buffering system is improved, the hydraulic buffering stroke is increased, and the purpose of progressive damping hydraulic buffering is achieved.

This invention relates to metamaterials for shock absorption and load bearing applications and to the methods for producing said metamaterials, wherein the essence of the metamaterial design lies in creating materials through artificially crafted structural units with specific properties and functions.

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 present invention relates to a flywheel (1) for a drive train of a motor vehicle, comprising a main flywheel mass (4) forming an input side (2) which can be screwed to a crankshaft of an internal combustion engine through a plurality of screw holes (5) distributed in the circumferential direction (U) of the flywheel (1), a slip clutch (6) arranged downstream of the main flywheel mass (4) in a torque transmission path emanating from the input side (2), and a torsional vibration damper (7) arranged downstream of the slip clutch (6) in the torque transmission path and which has both an output flange (11) and a hub (8) forming an output side (3), which is connected in a rotationally fixed manner to the output flange (11), with through holes (10) distributed in the circumferential direction (U), wherein the torsional vibration damper (7) has a disassembly device (12) which can be removed by rotation and which is designedto remove the non-rotatable connection of the hub (8) to the output flange (11) so that the through holes (10) can be aligned with the screw holes (5).

The invention discloses a semi-submersible wave energy-wind energy integrated power generation platform and a damping regulation and control method of a damping regulation and control system of the semi-submersible wave energy-wind energy integrated power generation platform. The platform comprises a semi-submersible wind driven generator platform, a wind driven generator set, a wave energy power generation device, an energy storage system, a sea area detection system and the damping regulation and control system. The wave energy power generation devices are divided into two groups on the inner side and the outer side of the platform, each wave energy power generation device comprises a platform inner side wave energy power generation device and a platform outer side wave energy power generation device, and each wave energy power generation device comprises a swing arm floater, a universal hinge, a connecting arm and a damping adjusting module. The semi-submersible wind power generation device and the wave power generation device are combined, and offshore renewable resources are comprehensively utilized; the six-buoy design is adopted, buoyancy is dispersed, stability and safety are improved, and meanwhile space is provided for a wave power generation device; the floaters are symmetrically arranged in a hexagonal shape and carry a damping regulation and control system, and the whole structure is more easily stabilized by adjusting the damping of the floaters in all directions.

A suspension stabilizer and method are described which may be attached to a bike having front fork suspension to improve handling and reduce rider fatigue. The suspension stabilizer may include a counterweight, a spring assembly and a guide assembly. The spring assembly may be arranged to provide a spring force between the counterweight and the guide assembly to resist linear motion of the counterweight along a guide assembly axis. The counterweight and spring assembly may have a natural motion frequency of 3 to 15 Hertz and may be based on one or more characteristics of the front fork suspension.

The invention relates to the technical field of vibration control, and discloses a quasi-zero stiffness vibration isolator imitating an insect jumping foot structure, which comprises a base and a bearing table between which a vertical spring is arranged, the two sets of connecting rod mechanisms are arranged between the base and the bearing table, each set of connecting rod mechanism comprises two lower connecting rods, two upper connecting rods and two middle connecting rods, the two lower connecting rods are hinged to the top face of the base, the two upper connecting rods are hinged to the bottom face of the bearing table, and the two middle connecting rods are distributed in an X shape; two ends of the two middle connecting rods are respectively hinged with the lower connecting rod and the upper connecting rod; the transverse springs are arranged at the hinged positions of the two lower connecting rods and the two middle connecting rods and the hinged positions of the two upper connecting rods and the two middle connecting rods correspondingly. The vibration isolator is simple in structure, small in transverse size, convenient to assemble and disassemble and easy to adjust, quasi-zero-stiffness vibration isolation is achieved through the special mechanical property of the overall structure, vibration energy can be efficiently absorbed, and the vibration isolator has wide application prospects in the field of low-frequency vibration control.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object.

The invention relates to the technical field of excavator bucket rods, and provides a bucket rod composite damping device and an excavator. The device comprises a shell composed of a base, an outer shell and a stress shell; the magneto-rheological buffer device is installed in the shell and composed of a lattice structure made of magneto-rheological elastomer materials and magneto-rheological fluid filled in gaps corresponding to the lattice structure, and a plurality of sound absorption holes are formed in each cell element wall in the lattice structure; the electromagnetic device is located in a containing cavity formed in the lattice structure and is composed of a magnetic core and an electromagnetic coil; the anti-vibration pad and the stress plate are embedded in the top of the shell and are in contact with the stress plate; the damping springs are arranged on the periphery of the shell and fixedly connected between the stress plate and the base; the vibration monitoring module is used for collecting vibration data of the bucket rod in real time and transmitting the vibration data to the intelligent control module, and the intelligent control module is used for adjusting the output magnetic field intensity of the electromagnetic coil according to the vibration data so as to adjust the viscosity of the magnetorheological fluid in real time.

The invention relates to a base, a shock absorber assembly, a suspension system and a vehicle. The base is used for being matched with a piston and comprises a piston connector and a first communicating pipeline. The piston interface includes a first inlet and outlet and a second inlet and outlet. The first inlet and outlet is used for communicating with the first cavity of the piston. The two ends of the first communicating pipeline are connected with the first in-out opening and the second in-out opening correspondingly. The first communicating pipeline is provided with a first control connector and a damping connector. And the first control interface is used for being connected with a first electromagnetic valve for controlling on-off of the first communicating pipeline. The damping interface is used for being connected with a damping valve for controlling fluid flow damping of the first communicating pipeline. The piston connector and the first control connector are located on different surfaces. The piston interface and the damping interface are located on different surfaces. The base is integrated with the piston connector, the first control connector and the damping connector, so that the shock absorber assembly can be connected with the first electromagnetic valve and the damping valve, and the function integration level of the shock absorber assembly can be improved.

The invention discloses a liquid elastic active vibration isolation device and a control method, and relates to the technical field of vibration isolation devices. A mounting hole is formed in a first cavity structure; the second cavity structure comprises a channel part and a buffer part; the channel part is inserted into the mounting hole, a magnetorheological elastomer is connected between the outer peripheral wall of the channel part and the inner peripheral wall of the mounting hole in a sleeving manner, and the magnetorheological elastomer is matched with a first magnetic field; a partition plate is installed in the buffering part, the part, located on one side of the partition plate, of an inner cavity of the buffering part communicates with the channel part, a buffering structure is arranged on the part, located on the other side of the partition plate, of the inner cavity of the buffering part, and the buffering direction of the buffering structure is the same as the sliding direction of the partition plate. The magnetorheological fluid is provided with a second magnetic field in a matched mode, the magnetic field direction of the second magnetic field is perpendicular to the flowing direction of the magnetorheological fluid, and the rigidity and damping of the whole device can be adjusted by controlling the sizes of the magnetic fields borne by the magnetorheological elastomer and the magnetorheological fluid respectively, so that the vibration isolation frequency band and the vibration isolation effect of the whole device are adjusted, and the optimal vibration isolation target is achieved.

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 head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object. An accessory module assists in control of the object.

Hydraulic damper(1000) for furniture doors or drawers. Damper(1000) comprises housing(1) having a closed first end(14) and a second end provided with lid(7); and piston(2) movable in housing(1) along longitudinal piston axis(A). Piston(2) defines first and second chambers(11,12) inside housing(1), respectively at first and second end-sides of piston(2). Piston(2) comprises circumferential groove(24) defined between circumferential first and second shoulders(241,242). Groove(24) is provided with annular collar(5) axially movable between first and second shoulders(241,242). Collar(5) is formed from elastic material to reversibly contact inner surface(13) of housing(1) when radially expanded when subjected to hydraulic-pressure forces parallel to axis(A). First shoulder(241) is arranged allowing hydraulic fluid to flow on collar(5) when collar(5) contacts first shoulder(241). Second shoulder(242) is arranged blocking hydraulic fluid from flowing on collar(5) when collar(5) contacts second shoulder(242). Piston(2) is provided with channel(21) arranged to provide fluid flow communication between first and second chambers(11,12).

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object. An accessory module assists in control of the object.

A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring housed in a spring chamber formed on the first fixed iron core side of the first movable iron core and biasing the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a throttle passage that causes the spring chamber to communicate with outside.

The invention relates to an intelligently adjustable motorcycle shock absorber, and relates to the technical field of shock absorbers. The invention comprises a spring system, a damping system, a nitrogen tank system and a thermal control system. The spring system comprises a spring upper seat device, a spring body and a spring lower seat device which are installed in sequence. The damping system comprises a damping tube, a damping rod and an upper mounting seat. The damping rod is slidably installed in the damping tube, and the lower end of the damping rod is installed on the spring lower seat device. The damping rod is provided with a damping flow channel. The nitrogen tank system is divided into an oil chamber and an air chamber. The thermal control system is respectively connected with the oil chamber and the upper chamber. The thermal control system comprises a thermal control mounting block, a thermal control airbag and a thermal control piston. The thermal control mounting block is provided with a thermal control channel. The thermal control airbag is installed on the thermal control mounting block. The thermal control piston is slidably installed on the thermal control mounting block. The thermal control piston points to the thermal control channel. The thermal control piston is transmission-connected with the thermal control airbag, and can automatically increase the damping after the viscosity of the shock-absorbing oil is reduced.

Active suspension actuator systems including an actuator with a compression volume and an extension volume are described. In some embodiments, the system includes one or more flow control devices in fluid communication with the compression volume and / or the extension volume of the actuator. In some instances, a flow control device may include a pressure balanced blow-off valve (PBOV). In some embodiments, the system includes a high capacity bidirectional base valve. In some embodiments, two or more flow control devices cooperate to, for example, damp low amplitude oscillations in the extension and / or compression volumes, and to allow the build-up of pump generated differential pressures while discharging rapid road induced differential pressure spikes between the extension and compression volumes.

The present disclosure provides a device and a method for controllable forging of a forming flow line of a complex-shaped component. The device includes a frame, a shaping unit, a cushioning unit, and a cleaning unit, and the frame is used to mount and fix the shaping unit, the cushioning unit, and the cleaning unit; the shaping unit is used to improve a shaping capacity of processed parts; the cushioning unit is used to reduce a vibration in a metal shaping process to avoid an impact on the shaping of the metal; the cleaning unit is used to clean up a surface of a mold after shaping; when the metal is put into the mold, the metal is extruded and shaped through the shaping unit, and at the same time, the cushioning unit is used to offset the vibration generated by the shaping unit during the shaping process.

An IFP is disclosed. The IFP includes a sealing channel formed axially about an outer diameter (OD), the sealing channel including at least two walls where the at least two walls of the sealing channel having a smaller OD than an inner diameter (ID) of a chamber and a channel is formed between the at least two walls. The IFP also includes an anti-tipping feature fixedly coupled with at least a portion of one wall of the sealing channel, the anti-tipping feature increasing a length of the IFP.

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.

The invention discloses a valve device, a shock absorber, a suspension system and a vehicle. The valve device comprises a valve shell, a first valve assembly and a second valve assembly, a mounting cavity is formed in the valve shell, at least part of the first valve assembly is arranged in the mounting cavity, at least part of the second valve assembly is arranged in the mounting cavity, and the valve shell is of an integrally-formed structure. According to the valve device, the valve shell is integrally formed, and the mounting cavity is formed in the valve shell, so that the first valve assembly and the second valve assembly are at least partially arranged in the mounting cavity, and fluid can flow between the first valve assembly and the second valve assembly through the mounting cavity; fluid can be effectively prevented from leaking when flowing through the first valve assembly and the second valve assembly, and the sealing performance of the valve device is improved. Meanwhile, a connecting pipeline between the first valve assembly and the second valve assembly is omitted, so that the integration level of the first valve assembly and the second valve assembly is high, and the overall size of the valve device is small.

A damper assembly includes a rod elongated along an axis. The damper assembly includes a body supported by the rod, the body having a first surface and a second surface opposite the first surface. The body and the rod define a passage between the body and the rod, the passage extending from the first surface of the body to the second surface of the body.

The invention relates to the technical field of vehicle control, in particular to a damping attenuation compensation method and device for a basic valve system of a continuous damping adjustable shock absorber, and the method comprises the steps: collecting the current mileage of a target vehicle, so as to determine whether the target vehicle carries out the self-inspection of the continuous damping adjustable shock absorber or not; under the condition that it is determined that self-inspection of the continuous damping adjustable shock absorber is conducted, the convergence time of a target vehicle passing through a preset deceleration ridge at different vehicle speeds is obtained; correcting a damping curve of the continuous damping adjustable controller of the target vehicle according to the convergence time at different vehicle speeds to obtain a target current of the continuous damping adjustable valve, comparing the target current with a current actual current of the continuous damping adjustable valve of the target vehicle to obtain a current deviation value, and outputting the current deviation value. And performing damping compensation on the continuous damping adjustable valve according to the current deviation value. Therefore, the problems that the damping force of the basic valve system is continuously attenuated along with the increase of the driving mileage of the vehicle, and stable driving and comfort of the vehicle are ensured by conventional control software are solved.

The present invention relates to a rebound composite electromagnetic energy dissipation device for reducing sloshing with a liquid-filled ball for a large liquefied natural gas (LNG) storage tank. When the liquid surface sloshes around, the gas spring is pulled by the steel strand to produce vertical displacement and provide a restoring force, and the vertical displacement of the gas spring drives the fan blades on the sleeves of the ball screws at the bottom to rotate in the damping fluid, consuming energy. The present invention uses hydraulic transmission instead of mechanical transmission of traditional piston motion, and the horizontal pistons produce horizontal displacement in the case of pressure unbalance, thus increasing the flexibility of horizontal piston motion; magnets are arranged in the horizontal slideways and the horizontal pistons to intensify the motion of the horizontal pistons and the relative motion between the horizontal pistons and the interior.

Architectures and techniques are provided for improved vibration compensation for a boom lift-robot-mounted (BLMR) system, which can result in improved BLMR operating precision and safety at a reduced cost. Boom lifts typically contain extendable large-scale, variable-stiffness structures, subject to complex nonlinear static deformation and dynamic motion / gust-induced vibrations. Said vibrations can be compensated for at an end effector of a robot via a Jacobian-based vibration compensation via IMU (JVCI) procedure. The output of the JVCI procedure can rely on IMU feedback and can be combined with other vibration-mitigation techniques, including various feedforward techniques.

The invention discloses a compact rigidity damping inerter self-control type hydro-pneumatic spring and a working method. The bottom of the lower end of a plunger of a hollow structure is sealed, is downwards connected with a wheel and extends into an oil cylinder from bottom to top, the top of the upper end of the plunger is fixedly connected with a piston, and a row of plunger holes are formed in the upper portion of the plunger; the upper part of an upper cavity of the oil cylinder is sequentially connected with a damper and a small oil-gas chamber; the lower part of a lower cavity is sequentially connected with an inerter pipe, an adjustable throttle valve and a large oil-gas chamber; the upper end of the self-control device outer cylinder is fixedly connected with the piston; a self-control device inner barrel capable of moving up and down is coaxially sleeved in the self-control device outer barrel, the lower end of the self-control device inner barrel is sealed, and the upper section of the self-control device inner barrel is hinged to the oil cylinder upper end cover; an inner barrel upper row oil through hole formed in an inner barrel of the automatic control device is always located in an upper cavity of the oil cylinder, the upper edge of an inner barrel middle row oil through hole is aligned with the upper edge of an outer barrel upper row oil through hole, and the lower edge of an inner barrel lower row oil through hole is aligned with the lower edge of an outer barrel lower row oil through hole. The rigidity is changed, and the damping and the inerter can also be changed.

A portable supporting stand for supporting a portable metrology device, such as a laser tracker device, at a predefined height includes at least one leg having an elongated member, where, in a deployed state, the portable supporting stand is a substantially rigid support stand that is arranged to substantially rigidly support the portable metrology device on a floor surface. The portable supporting stand also includes a vibration damper unit for reducing vibrations of the portable supporting stand.

The present disclosure relates to a hydraulic damper comprising a main tube, a piston assembly, a base valve assembly, and at least one hydraulic compression stop assembly cooperating with a compression valve assembly, and comprising a pin disposed slidably within the piston rod and biased to project an activating tip towards the compression chamber. Said compression valve assembly comprises at least one deflectable or floating disc covering compression flow passages, and biased by a piston member slidable along said axis and normally abutting a retaining surface, and a pressure chamber having one surface defined by a surface of said piston member abutting said retaining surface, wherein said pin upon sliding inside the piston rod facilitates a flow of the working liquid from the compression chamber into said pressure chamber to increase biasing load on said at least one deflectable or floating disc.

The invention relates to a self-resetting variable-stiffness vibration double-control damper suitable for supporting column type electrical equipment and application of the self-resetting variable-stiffness vibration double-control damper, and belongs to the technical field of vibration double control of the electrical equipment. In order to solve the problems that an existing damper is single in function and the like, the damper comprises an outer cylinder, an inner cylinder, an energy dissipation inner rod and an energy dissipation mechanism, the outer cylinder is of a two-section type splicing structure, the inner cylinder is coaxially arranged in the outer cylinder in a sleeved mode and connected with the outer cylinder through a first fastener, and the bottom of the inner cylinder is aligned with a splicing seam of the outer cylinder; the energy consumption inner rod is arranged in the outer cylinder in a penetrating mode, one end of the energy consumption inner rod extends out of the outer cylinder, the energy consumption mechanism is arranged in the outer cylinder, the energy consumption mechanism is distributed on the periphery of the energy consumption inner rod in the length direction of the energy consumption inner rod, high energy consumption capacity and reset capacity are achieved, variable-stiffness vibration double control and self-reset can be conducted, the safety of electrical equipment is improved, and residual deformation is reduced; a design method and a safety monitoring method are provided for the damper, the design efficiency and accuracy are improved, and safe and stable operation of equipment is ensured.