1869 results about "Damping function" patented technology

A control system is operable to selectably activate shock damping devices associated with a bicycle so as to eliminate bobbing encountered under extreme pedaling conditions. The system includes a crank axle torque detector which operates to detect a level of torque applied to a crank axle and provide a control signal corresponding to the level of torque. A shock damping device is coupled to the frame of the cycle, and functions to absorb and dampen mechanical shocks communicated to the frame. The shock damping device includes an activator for controlling its damping function. The activator is operable to receive the control signal from the crank axle torque detector and control the shock damping device in response thereto. The control signal may be an electrical or a mechanical signal.

A golf club head with dual weighted parties having fixing structure is provided, which includes a body, a first weighted part having a fastening portion, and a second weighted part with two fixing portions on side of two ends and a joining portion at the bottom part. The body has a cavity for the first weighted part to be fastened and a snapping portion at the bottom of one side surface. The second weighted part uses the fixing portion and the joining portion to respectively snap with the snapping portion of the body and embed in the fastening portion of the first weighted part, such that the first weighted part and the second weighted part are fixed in the body, thus, the golf club head achieves preferred weighting effect and damping function.

The invention discloses a precision damping component and a damping platform composed of the precision damping component, and the damping platform has damping function and positioning function along a Z direction. The precision damping component comprises a passive damping part, an active damping actuator and an external frame. The passive damping part is a piston rod with a structure of double cavities, an air pocket and a pressure cavity are respectively positioned in the two cavities, and the air pocket has larger longitudinal bracing power and lower rigidity, and can isolate the vibration of attenuation high frequency. The active damping actuator is a linear voice coil motor connected in parallel with the passive damping part, and applies acting force to a passive object according to the vibration condition and location information of the controlled object, so as to drive the controlled object to move to a designated position and compensate the vibration. The damping platform composed of at least three precision damping components has the functions of vibration damping with a plurality of degrees of freedom, accurately positioning along the Z direction, focusing and leveling. The precision damping component and the damping platform can be used in the apparatus with precision damping requirements such as mask aligners, ultra-precision numerically-controlled machine tools, biochip scanners and the like.

A hinge assembly includes a housing, an arm and at least one spring. A damping device includes a damper having a piston rod, a maintaining member secured in the housing and an adjustment member. The adjustment member is movably connected to the maintaining member and has a protruded portion located corresponding to the piston rod of the damper. When the adjustment member is moved to a first position relative to the maintaining member, the protruded portion of the adjustment member is located toward the piston rod of the damper, so that the piston rod contacts the protruded portion and retracts to perform damping function. When the adjustment member is moved to a second position relative to the maintaining member, the protruded portion of the adjustment member is moved away from the piston rod of the damper, and no damping function is available.

To provide a hydraulic tensioner lifter which can reduce the filling time of oil pressure into an oil chamber which is in a state wherein air is present therein and can sufficiently exhibit a vibration-damping function. A hydraulic tensioner lifter for applying tension to an endless power transmission band of a power transmission mechanism includes a plunger fitted for sliding movement in an accommodation hole of a tensioner body B and cooperating with the tensioner body B to define an oil chamber therebetween. An air-bleeder mechanism is provided for exhausting air in the oil chamber to the outside of the oil chamber. The purge valve P has a check valve function of permitting the exhaustion of the air in the oil chamber to the outside of the oil chamber but blocking admission of air into the oil chamber from the outside of the oil chamber and blocking discharging of the oil pressure in the oil chamber to the outside of the oil chamber. In addition, the volume of oil in the oil chamber may be decreased by a spring guide portion which is accommodated in the inside of the tensioner spring for guiding the tensioner spring.

Device and method for a damping function to reduce undesirable mechanical transient responses to control signals. In one aspect of the present invention, the damping function may be used to reduce overshoot and oscillation when a digital micromirror is driven from a landing plate to the flat or neutral position. In another aspect of the present invention, the damping function may be used to reduce transient resonance of a digital micromirror when the micromirror is driven to a landing plate.

The invention discloses a novel energy automobile battery protection damping mechanism which comprises a fixed base, a battery tank and a baffle plate, wherein a sealing tank and a piston cylinder are arranged between the fixed base and the battery tank; a horizontal main piston is arranged inside the sealing tank; a vertical main piston rod is fixedly connected with the upper end of the main piston; a rubber tube is communicated with the bottom inside the sealing tank; the rubber tube extends into the piston cylinder; the piston cylinder is connected inside a chute in a sliding manner; a support block is fixed at the upper end of a secondary piston rod; a protection plate is fixed on a side wall of the battery tank; and a vertical inner plate body is fixed on the protection plate. As the main piston rod is pushed downwards through the battery tank, the main piston is moved downwards, the air inside the sealing tank is compressed, downward movement of the battery tank is retarded, then collision is avoided, and a damping function is achieved; and moreover, the air is compressed inside the sealing tank, the secondary piston inside the piston cylinder is moved upwards, then the support blocks contacts a pressing block, the battery tank is supported, the battery tank can be conveniently recovered, and the damping effect is enhanced.

The method for calculating charged rate of a secondary battery is intended to calculate charged rate of a secondary battery which supplies electric power to loads, and comprises the step to measure voltage of the secondary battery more than once in a predetermined period of time after termination of charge or discharge, the step to determine the coefficients of a quadric or more exponential damping function which approximates the time characteristic of the open circuit voltage of the secondary battery by recursive calculation with the plural measured voltage values, and the step to calculate a convergent value of the open circuit voltage of the secondary battery from at least the exponential damping function with the coefficients determined above. Therefore, precise charged rate of the secondary battery can be calculated from the precise convergent value of the open circuit voltage

The invention discloses a damping device and an aircraft employing the same. The damping device comprises a base and an installing seat, there is a certain distance between the base and the installing seat, the damping device also comprises at least a damping piece clamped between the base and the installing seat and anti-falling pieces respectively connected with the base and the installing seat, one ends of the damping pieces are connected with the base, the other ends of the damping pieces are connected with the installing seat, and at least parts of the anti-falling pieces penetrate through the damping pieces. According to the damping device, the damping pieces are additionally arranged between the base and the installing seat so that a damping function is provided.

The invention discloses a high-voltage inverter convenient to move. The high-voltage inverter convenient to move is simple and reasonable in structure, low in production cost, convenient to mount andcomplete in function. A moving device, with the damping function, special for the inverter is provided, the damping function is achieved, when the inverter is transported, the inverter is protected, the inverter is not prone to damage, and economic losses are reduced; a spring is arranged between a groove and a support, vibration can be effectively resisted, a handle is rotated, a clamping block clamps the inverter, shaking is prevented, damage in the transporting process is avoided, a hydraulic rod works, a lifting frame descends, a concave frame covers the inverter, the freedom degree of theinverter can be limited to a great degree, a rotating motor drives a rotating shaft to rotate, a first shaft sleeve and a second shaft sleeve move to achieve ascending and descending of the sliding rod, the height of the whole device is greatly adjusted, through motor ascending and descending, the inverter is stable and efficient, the inverter cannot be damaged, an air pressure rod extends out ofa universal wheel and is moved through the universal wheel, and after the air pressure rod is moved to the designated place, the air pressure rod retreats from the universal wheel.

Device and method for a damping function to reduce undesirable mechanical transient responses to control signals. In one aspect of the present invention, the damping function may be used to reduce overshoot and oscillation when a digital micromirror is driven from a landing plate to the flat or neutral position. In another aspect of the present invention, the damping function may be used to reduce transient resonance of a digital micromirror when the micromirror is driven to a landing plate.

The invention discloses a multifunctional comprehensive restraint device for whole construction and operation process of a long-span hybrid-beam cable-stayed bridge and relates to a bridge engineering technique. The multifunctional comprehensive restraint device comprises longitudinal dampers, multidirectional slideable supports and retractable devices. Longitudinal damping devices, longitudinal comprehensive multifunctional devices and transverse windproof supports with independent functions are arranged between a main beam and bridge towers. A damping function is independently realized at the operation period of the bridge. The longitudinal comprehensive multifunctional devices realize solidifying, pushing and limiting functions in the whole construction and operation process of the bridge. The multifunctional comprehensive restraint device provides effective rigidity and damping for the operation period of the long-span hybrid-beam cable-stayed bridge and guarantees that the static and dynamic response of the bridge is within an acceptable range. At the same time, the longitudinal comprehensive multifunctional devices are used for taking a temporary solidifying function in the splicing process of the upper structural cantilever of the bridge and are also used as main beam pushing force-bearing structures under the condition of full-bridge closure, a no-stress geometrical linear bridge construction control method is realized, the functions are clear, the force is born reasonably, the economic and practical performance is high and the multifunctional comprehensive restraint device is suitable for all kinds of long-span hybrid-beam cable-stayed bridges.

A fan tower load shedding method based on damping devices is characterized in that a protection supporting device is horizontally connected on the inner wall of a wind generating set tower drum, a plurality of elastic damping devices are symmetrically and uniformly mounted above the protection supporting device along different directions of the periphery of the inner wall of the tower drum and connected with the protection supporting device through sliding rails, and the elastic damping devices comprise mass blocks and equivalent damping springs. Kinetic energy of a tower can be reduced by the damping function of the elastic damping devices when the tower swings in a certain direction, so that vibration of the tower is effectively decreased, and the load of the tower is reduced.

The present invention provides a positioning mechanism and an exposure apparatus that can be used in a vacuum ambience and has a damping function with small degassing and small dust creation. A positioning mechanism according to the present invention, when used with first and second members, serve to position the second member with respect to the first member, wherein the positioning mechanism include a positioning portion capable of relatively positioning the second member relative to the first member, and an attenuating material provided at least at a portion of a periphery of the positioning portion.

The invention belongs to the technical field of robots, discloses a bionic sole mechanism for a foot type robot and relates to a robot bionic sole mechanism with high adhesive force and a damping function. The chicken foot bionic design of the bionic sole mechanism is realized through a claw steel plate, a sole rubber mat, heel conical nails and tiptoe triangular nails. It is guaranteed that the foot mechanism has high adhesive force and the damping function, self restoration of a bionic sole is achieved by means of a tension spring, and foot stress is measured through a three-dimensional force sensor. The bionic sole is composed of the claw steel plate, the coupling screw sole rubber mat, the heel conical nails, tiptoe triangular nail coupling screws and the tiptoe triangular nails. The chicken foot bionic design of the bionic sole mechanism is realized through the sole rubber mat, the tiptoe triangular nails, the heel conical nails and the claw steel plate, an elastic opening is formed in the front end of the claw steel plate, and in this way, the foot mechanism has a better damping function and higher adhesive force so as to be adapted to different road conditions.

The invention discloses a unified damping ratio-based damping coefficient adaptive control method of a virtual synchronous generator. The method comprises the following steps of (1) simulating primary frequency modulation and the mechanical characteristic of a rotor and obtaining a frequency and a phase of output voltage; (2) detecting real-time power angle information and calculating a damping coefficient according to a designed adaptive damping function to obtain damping power; (3) superposing the damping power to output active power for feedback and calculating an output voltage frequency and a phase instruction of the virtual synchronous generator according to the step (1); and (4) generating a voltage reference value by a voltage amplitude instruction and the phase instruction, and obtaining a control signal of a converter through a voltage closed loop. Compared with an existing method, the virtual synchronous generator can ensure an oscillation suppression effect at different steady state operation points and has relatively good dynamic characteristics; and the anti-interference capability of the frequency is strengthened.

The invention relates to a damping undercarriage of a quadrotor, and belongs to an unmanned plane undercarriage with damping function. According to the damping undercarriage, a support is utilized for fixing a motor, the motor drives two belts to make transmission along different directions through a group of gears, and further drives the undercarriage to deploy and retract through the belts. The undercarriage is hinged with a fastening connector, and the upper end of the undercarriage is connected with the fastening connector via an extension spring. The undercarriage comprises an upper arm and a lower arm which are in connection via s crossbeam and are respectively inside provided with springs. The advantages comprise that the damping undercarriage is novel in structure, can be deployed and retracted according to flight states, reduces air resistance in the flight process, and substantially improve the stability of an unmanned plane. In landing process, the undercarriage is telescopic, the shock loading coefficient is reduced, and the safety of the unmanned plane is improved.

A data communication system includes a plurality of sensor initiators, each of which has first and second antennas; a communication control module and a plurality of sensor communication modules. The communication control module is connected with the plurality of sensor initiators through a LAN and is configured to control the plurality of sensor initiators such that a first electromagnetic wave signal for a command data signal is transmitted through the first antennas. Each of the plurality of sensor communication modules includes at least a sensor and third and fourth antennas. The sensor communication module is configured to receive the first electromagnetic wave signal for the command data signal by a resonance antenna as the third antenna to generate a reception voltage signal, to adjust a damping time of the reception voltage signal, and to transmit a measurement data signal obtained from the sensor to the communication control module from the fourth antenna by a second electromagnetic wave signal through the second antenna in response to the command data signal obtained from the reception voltage signal.

A water paint with flame-retarding, anticorrosion and damping functions for the structure of vehicle and ship is prepared from mica powder, aluminium hydroxide, styrene-acrylate emulsion, silicic acrylate emulsion, elastic emulsion, flame-retarding agent, emulsifier, propanediol, dimethyl ethanolamine, thickening agent and neutral water through proportional mixing, stirring, regulating pH value, grinding and packing.

The present invention provides a steering preferential type amplificative valve, on which are oil port T, A and B, oil port L and R connected with hydraulic motive proportion reversing valve (9), the oil input ports of a shuttle valve (2) are connected with oil port A and B respectively, the oil output port of the shuttle valve (2) are connected with oil port PAB of the hydraulic motive proportion reversing valve (9), the priority valve (4) is connected with oil port P of the hydraulic motive proportion reversing valve (9) and also connected with oil port P2 by check valve (8) whose spring is connected with oil port PC of the hydraulic motive proportion reversing valve (9) by the second damper (5), the inlet of a safety valve (6) is connected with oil port PC of the hydraulic motive proportion reversing valve (9), the inlet port and control port of order valve (7) are connected with front and rear end of check valve respectively. The steering preferential type amplificative valve of present invention has merits of simple structure, energy saving and damping function, can be used widely in hydraulic system of project machine.

The invention relates to the technical field of battery accessories, and discloses a power battery aluminum shell with damping function and high safety. The aluminum shell comprises a shell body and a top cover; the top cover is fixedly connected on the top of the shell body through a fixing bolt; a placing plate is fixedly connected at the bottom of the shell body; a placing groove is opened on the supper surface of the placing plate; a battery main body is placed in the placing groove; both sides of the battery main body are provided with clamping plates. The power battery aluminum shell with damping function and high safety is provided with a first retractable spring, a first retractable rod, a balance plate, a second retractable spring and a second retractable rod; during the vibration process of the battery main body, two sides of the battery main body can be buffered and damped by the first retractable spring and the first retractable rod installed on two sides of the battery main body; the top of the battery main body can be pressed and shaken by the second retractable spring and the second retractable rod installed on the top of the battery main body. Thus, the battery main body can be damped on each side; the damping is more thorough; and the service life of the battery main body is prolonged.

The invention discloses a leg joint for a quadruped robot, wherein third revolute pairs are arranged at four corners of the trunk in two groups and correspond to mounting holes of hip joints. A shaft line of a worm wheel shaft of each third revolute pair is parallel to the centre line of the trunk in the length direction. A third revolute pair motor and a third worm rod are both fixed in the trunk. A third worm wheel is fixedly arranged on the worm wheel shaft. The third revolute pair motor is connected with a third worm rod, and the third worm wheel is engaged with the third worm rod. Four hip joints are connected with four upper legs through respective first revolute pair. The upper legs are connected with second leg sections through second revolute pairs. The first revolute pairs, the second revolute pairs and the third revolute pairs are all driven by independent motors. According to the leg joint disclosed by the invention, a robot can realize more complicated gait, and has stronger adaptability and obstacle crossing capability under a complicated terrain environment; due to the use of self-locking performance of the worm wheel and the worm rod, the robot has larger loading capability and stable static standing capability. The leg joint for the quadruped robot, disclosed by the invention, has the characteristics of simple structure, strong loading capability, anti-impact damping function and static standing function.

The invention discloses a bus floor with acoustic insulation and damping functions, which is arranged at the back of a carriage, and comprises the following layers from the top down: a floor leather layer, a damping slab rubber layer, a bakelite board interlayer, a multilayer compound acoustic damping cotton layer, a steel plate layer and a self-crusting rubber-plastic sponge layer. A cavity is also arranged between the bakelite board interlayer and the multilayer compound acoustic damping cotton layer. The multilayer compound acoustic damping cotton layer comprises three layers from the top down, namely a porous sponge acoustic absorption layer, a high-density rubber-plastic sponge acoustic insulation layer and a self-adhesion damping acoustic insulation layer. The bus floor adopts sealing, acoustic absorption, acoustic insulation and vibration reduction to achieve the acoustic insulation and damping functions. After the floor is adopted, noise in a bus can be reduced, and environment in the carriage becomes more comfortable.

The invention discloses a piezoelectric speaker based on a piezoelectric cantilever beam, belonging to the technical filed of piezoelectricity. The piezoelectric speaker is structured by bonding an upper layer piezoelectric ceramic piece and a lower layer piezoelectric ceramic piece of opposite polarization directions at both sides of a middle layer fiber sheet, thereby forming a piezoelectric cantilever beam; one end of the piezoelectric cantilever beam is fixed with an external frame so as to form a fixed end from which electrodes are led out; the movable end of the piezoelectric cantilever beam is connected with a vibration sheet by a link block with a damp function; and the vibration sheet is bonded to the external frame through a vibration film. The vibration sheet can serve as the main medium for driving air around the speaker and also the counter weight of the speaker, can reduce the first-order resonance frequency of the speaker effectively, and improve the effect of low pitch replay. The piezoelectric speaker provided by the invention has the characteristics of low resonance frequency, simple vibration mode and large vibration range and the like, and has the advantages of good low pitch performance, stable sound pressure output and high sound output and the like compared with a conventional surface mount type piezoelectric speaker.

The invention relates to a water-based or land-based or semi-floating common low-rise house and a floating vessel thereof, also relates to houses used for preventing natural disasters, comprising fire preventing houses, flood control and debris flow prevention houses, houses for drought resistance by reservoirs, water air conditioner houses for preventing global warming, and displacing houses, in particular to damping common low-rise houses. As a footing supports the house, the accidental inclination or sinking of the house can be limited in 0.7 or 0.3m, thus ensuring the personal safety. Also, other reasons are as follows: the weight of the house is light, the structural strength is high, the floating force is large and the stability is good. The importance of the case is variable damping function of the house, and the case is a damping machine which is realized by water, soil and wood and aims at challenging maximum earthquake, and how to lead the environment of the damping machine to be restored to environmental layout of the common house is described in the following.

A dynamic damper for installation in a drill string (1), the purpose of which damper is to reduce the risk of jamming the drill bit (5), thereby avoiding damages in the event of unwanted extreme oscillations and rotational speed of the drill string caused by uncontrolled release of torsional energy in the drill string when the drill string suddenly breaks free of the jam. For this purpose, the damper is constructed from an outer and an inner string section (11) and (12), supported concentrically and interconnected through a helical threaded connection (10), so that relative rotation between the sections caused by torque (8) will give an axial movement that lifts and loosens the drill bit from the bottom of the hole in critical jamming situations. The spring (9) maintains the outer string section in an axial position against the shoulder (22). A hydraulic damping effect on the axial movements is achieved by oil volumes (16) and (17) being interconnected through narrow bores (18). Logging of the damping function is carried out by sensor (20), which registers and stores data to be read when the damper is retrieved to the surface.

The invention discloses a track walking device having an independent damping function. The track walking device comprises a track frame, a driving wheel, a guide wheel, a plurality of supporting wheels and a track. The driving wheel is rotatably arranged on the track frame and is in transmission connection with the track, and the track is sleeved outside the driving wheel, the guide wheel and the plurality of supporting wheels. The guide wheel is rotatably arranged on the track frame, the plurality of supporting wheels are located below the track frame and are arranged at intervals along the front and back walking directions of the track walking device, and each supporting wheel is connected with the track frame through a supporting wheel shaft, an oscillating rod and an oscillating shaft. One ends of the oscillating rods are rotatably connected with the track frame through the oscillating shafts, and the other ends of the oscillating rods are rotatably connected with the supporting wheels through the supporting wheel shafts. The track walking device is further provided with a plurality of damping units, and each damping unit corresponds to one oscillating shaft. Accordingly, compared with the prior art, the track walking device has good damping performance and terrain self-adaption capability.