77results about How to "Adjustable damping" patented technology

The invention discloses a tuning quality damper vibration reduction control device used in a wind turbine, which relates to tuning quality damper vibration reduction control technology. The invention is arranged inside a tower arranged at an upper end of a wind generator and comprises a platform, rotation adjusting devices, a power device, a quality block assembly and a damper arranged on the platform; the platform is fixed on the internal wall of the tower; the key design points of the invention are characterized in that: the power of the power device drives the quality block assembly to rotate through the rotation adjusting devices so that the components on the platform can rotate synchronously along with the yaw of the wind turbine. Opposite direction adjustment can be realized forwardly along with wind directions by the invention, thus controlling vibration amplitude to the utmost extent. Furthermore, based on MTMD vibration reduction mechanism, the invention also provides an MTMD technical proposal with a plurality of single TMDs arranged from top to bottom in sequence; the power device coaxially drives varied rotation adjusting devices, thus guaranteeing the synchronous rotation speed of each turntable and controlling the vibration of the tower within a frequency band scope caused by the rotation of wind wheels.

The present invention relates to a hidden arc welding bogie, which belongs to a field of auxiliary welding equipment technology. The present invention mainly adopts a control box connected with a crossbeam. A welding wire disc is connected with the crossbeam by damp structure. The crossbeam connected with an upright post. A lifting ring is connected with an upright post. A conducting filament frame is connected with the crossbeam. A funnel is connected with a wire feeding device. An upright post is connected with an ambulatory control box. A funnel nozzle groupware is connected with the funnel. And an ambulatory clutch is connected with an ambulatory control box. The present invention is characterized in that the wire feeding device is connected with the upright post by a cross fine adjustment structure, and the fine adjustment structure is connected with the ambulatory control box by a connecting rod. The present invention is easy to be adjusted in operation and realize a change straight bead welding. The adjustment is convenient, fast and precise, which can meet requirements for welding in different directions. And the present invention has lighter weight and is easy to move, which is applicable for butt weld, lap weld and fillet weld of various middle or thick armor plate structure.

The invention discloses a magnetoelectricity reaction type changeable damping shock absorber. The magnetoelectricity reaction type changeable damping shock absorber is used for vehicle shock absorption and comprises a shock absorber shell, a permanent magnet sleeve arranged in the inner wall of the shock absorber shell, and an electromagnetic coil piston arranged in the shock absorber shell, wherein the lower end of the shock absorber shell is provided with a lower cover, the upper end of the shock absorber shell is provided with an upper cover, the upper cover is provided with a circular hole, a hollow shock absorber rod is fixedly arranged on the electromagnetic coil piston, one end, far away from the electromagnetic coil piston, of the shock absorber rod stretches out of the upper cover through the circular hole, the circular hole is provided with an upper cover seal ring, and the inner part of the shock absorber rod is provided with a guiding line which is connected to an electrical component inside the electromagnetic coil piston. According to the magnetoelectricity reaction type changeable damping shock absorber, adjustable damping can be achieved, and the magnetoelectricity reaction type changeable damping shock absorber can generate electric energy so as to save energy.

The invention discloses a device and method for measuring the clearance and rigidity of a ball screw. The device comprises a ball screw driving unit, a displacement detection unit and a damp loading unit, and is characterized in that the ball screw driving unit comprises a servo motor, a coupling, a ball screw, a sliding block and two linear guide rails; the displacement detection unit comprises a grating scale displacement sensor and a servo motor encoder used for measuring rotation angular displacement of the servo motor and the ball screw, and the damp loading unit comprises an electromagnetic damper, a damping base and a floating joint. The device can realize measurement for the clearance and rigidity of the ball screw under the action of big and small damping forces.

The invention relates to a damping adjustable all-fiber acceleration microseism monitoring sensor probe, and belongs to the technical field of fiber sensing and microseism monitoring. The sensor probe comprises a sensing probe housing, a reference arm elastomer, a sensing arm elastomer, a mass block pedestal, an adjusting nut, a damping ring and a sensing probe top cover; incident, reflecting, reference-arm and sensing-arm fibers connected with a fiber coupler, a reference arm reflector and a sensing arm reflector form a complete sensing optical path; and a laser source is transmitted to a sensing probe, pilot light and reference light with seismic information in the sensing probe are interfered in the fiber coupler, the interfered light is transmitted to a signal demodulator via the reflecting fiber, and a microseism signal to be measured is recovered. High sensitivity of the sensor is intruded, a damping adjustable technology is introduced, the sensitivity of the sensor in the resonant frequency is reduced, a frequency response curve is smoother, the detection bandwidth is broadened, the amplitude-frequency and phase-frequency characteristics are improved, and the microseism signal can be obtained without loss.

The invention belongs to the technical field of rehabilitation therapy instruments, and particularly relates to a damper and a walking aid robot. The damper is characterized in that a hydraulic rod stretches into a hydraulic cylinder from the tail end of the hydraulic cylinder; a seal ring connected with an inner surface of the hydraulic cylinder is arranged on the inner end of the hydraulic rod;a free piston and a first compression spring are arranged between the seal ring and a fixed end of the hydraulic cylinder; two ends of the first compression spring press against the free piston and the fixed end; the free piston and the seal ring jointly divide a space in the hydraulic cylinder into a first cavity, a second cavity and a third cavity; liquids are arranged in the second cavity and the third cavity; a first through hole communicating with the second cavity and the third cavity is formed in the seal ring; and a flow adjusting device for controlling the flow velocity of the liquidpassing through the first through hole is arranged on the hydraulic rod. The damper provided by the invention has adjustable damping, provides a larger support force, and can mutually transform gravitational potential energy of a body and elastic potential energy of the first spring. The damper provided by the invention has the characteristics of small energy consumption and simple structure.

The invention discloses a brake-by-wire pedal feeling simulator based on a magnetorheological fluid, and a working method thereof. The brake-by-wire pedal feeling simulator comprises a mechanical transmission module, a brake pedal feeling simulation module and a control module. The brake pedal feeling simulation module uses a magnetorheological fluid to replace a hydraulic or elastic element so asto substantially simplify the structural complexity. The magnetic field intensity is adjusted through a magnet exciting coil, so that the characteristics of the magnetorheological fluid are changed so as to adjust brake feedback. The brake-by-wire pedal feeling simulator is high in real-time performance, high in accuracy and capable of enabling a driver to obtain a good and smooth brake pedal feeling.

The invention belongs to the technical field of human body dynamic and static balance training methodology and human body balance functional assessment and relates to a bimodal visual feedback dynamicand static balance training device. The device comprises a supporting base component, universal castors are mounted at four lower corners of the supporting base component, a dynamic and static motionplatform is arranged above the supporting base component, and a standing support frame with a damping adjustable function is arranged at the front end of the supporting base component. According to balance rehabilitation training demands and ergonomic characteristics, the damping adjustable standing support frame is designed, and a compact-structure high-safety motion platform is designed. In addition, dynamic and static standing balance training under each mode can be realized, and standing balance posture stability training demands of patient crowds at each stage can be met.

The invention relates to a magnetorheological elastomer suspension element for a hub motor. The element comprises a magnetorheological elastomer, and at least one set of magnetic generation modules arranged on the magnetorheological elastomer; the magnetorheological elastomer is cylindrical; each set of magnetic separation modules comprises two electromagnet mechanisms symmetrically arranged in the peripheral direction of the magnetorheological elastomer, and two piezoresistance sensors respectively connected with the electromagnet mechanisms; the electromagnet mechanisms are powered through an external power supply to generate an initial magnetic field; magnetic induction lines of the initial magnetic field penetrate through the magnetorheological elastomer corresponding to the electromagnet mechanisms; and the piezoresistance sensors are matched with the electromagnet mechanisms, are positioned on the inner side wall of the magnetorheological elastomer, and are used for changing current input in the electromagnet mechanisms according to induced pressure values to change the magnetic field intensity so as to change damping of the magnetorheological elastomer corresponding to the electromagnet mechanisms. Compared with the prior art, the element has such advantages as compact structure and adjustable damping dynamic state.

The invention relates to the field of movable door/window structures. A movable door/window structure comprises a door/window frame and casements, wherein rails are arranged in an upper frame and a lower frame of the door/window frame, and each casement is composed of a shaft edge mullion, a pin edge mullion, a top rail and a bottom rail. The upper ends of the shaft edge mullions of the casements are hinged to an upper sliding frame of an H-shaped frame, and the lower ends of the shaft edge mullions are hinged to a lower sliding frame of the H-shaped frame. The H-shaped frame comprises the upper sliding frame, the lower sliding frame and a stand column, and the stand column is respectively and fixedly connected with the upper sliding frame and the lower sliding frame. Sliding wheels mounted on the upper sliding frame are arranged in the rail of the upper frame, and sliding wheels mounted on the lower sliding frame are arranged in the rail of the lower frame. The sliding wheels comprise perpendicular sliding wheels and horizontal sliding wheels, the perpendicular sliding wheels are mounted at the end of the upper sliding frame and the end of the lower sliding frame, and the positions and the diameters of the horizontal sliding wheels are matched with slots of the rails of the upper frame and the lower frame of the door/window frame. The movable door/window structure meets the requirement that the casements can move left and right and can be pushed and pulled in an overhanging mode, and is stable and reliable when the casements are moved or pushed or pulled or folded.

The invention discloses an emergency air spring assembly. The emergency air spring assembly comprises an upper cover plate, air bags, an upper end plate and a lower end plate; the periphery of the upper end plate is connected with the periphery of the lower end plate through the air bags; a plurality of steel springs are arranged between the upper cover plate and the lower end plate in the peripheral direction; and a damper is also mounted between the upper cover plate and the upper end plate. The emergency air spring assembly has the advantages of simple structure, convenience in mounting, low overload vertical stiffness, large vertical deformation, high comfortableness and stability, and capacity of preventing creepage and realizing soft stop.

The invention provides a self-adaptive damper and a device based on the damper. The self-adaptive damper comprises a device shell, a functional rod, a first elastic assembly, a second elastic assembly, a first damping adjusting assembly and a second damping adjusting assembly. The functional rod penetrates through a movement channel in the device shell, a first containing space and a second containing space are formed between the functional rod and the device shell, and the first damping adjusting assembly and the second damping adjusting assembly are installed in the first containing space and the second containing space respectively. The second elastic assembly is installed between the first damping adjusting assembly and the second damping adjusting assembly, the first elastic assemblycomprises a first elastic body and a second elastic body, and the first elastic body and the second elastic body are installed at the two ends of the device shell respectively. According to the damper, the damping-adjustable self-adaptive vibration attenuation and buffering can be achieved under the condition of vibration impact, various vibration and impact scenes can be solved, and the damper isflexible in structure and wide in application range.

A high pressure regulating valve (1) has a valve body (2) provided with an inlet (20) and an outlet (21), and a sealing element (4) mounted on a valve seat (3) and comprising a valve bore (30). The valve seat (3) is disposed on the valve body (2) between the inlet (20) and the outlet (21). An operating element (5) is formed along a longitudinal axis and movably supported by and suitably configured to be operated by an electromagnet (6). An armature (62) of the electromagnet (6) and the operating element (5) are executed as separate unconnected components.

The invention provides a twisted tooth damper with an adjustable nitrogen tank. The twisted tooth damper comprises an oil cylinder and a balance cylinder. The lower end of the oil cylinder communicates with the lower end of the balance cylinder through an oil pipe. A first lower cylinder cover is arranged at a lower port of the oil cylinder, and a first upper cylinder cover is arranged at an upper port of the oil cylinder. A piston rod penetrates the first upper cylinder cover, and a piston mechanism arranged in the oil cylinder is fixed to one end of the piston rod. A partition plate piston is arranged in the balance cylinder, an adjustable valve component is arranged at a lower port of the balance cylinder, and a second upper cylinder cover is arranged at an upper port of the balance cylinder. According to the twisted tooth damper, damping is adjustable, and part of components can be detached; and when the components are damaged, the damaged components can be replaced, the whole damper does not need to be replaced, and accordingly the service life of the damper is prolonged.

The invention discloses an embroidery thread box. The embroidery thread box comprises a box body, thread through holes, thread columns, a receiving groove and damping pieces; a plurality of thread columns are arranged in the box body; the thread through holes and the receiving groove are formed in the frontage of the box body; the damping pieces are arranged under the thread columns. In the way, the embroidery thread box has the advantages of high reliability, compact structure, convenience for use and receiving, avoidance of winding and knotting, adjustable damping, secure connection, low price and the like, and meanwhile, has wide market prospect in the embroidery market.

The invention discloses a uni and bi-direction power load counterweight resistance element device comprising a transmission part support body, a gear transmission connection structure and at least one damping counterweight. The gear transmission connection structure comprises a driving gear shaft for being axially and fixedly connected with a damping action shaft, and gear transmission parts. The driving gear shaft comprises a driving shaft and driving gear. The driving gear is fixed on the driving shaft. The driving gear shaft and each gear transmission part are respectively supported on the transmission part support body via bearings. Gear engagement transmission connection is formed between the driving gear and each gear transmission part. The gear transmission part at the tail end of the gear transmission connection structure is in gear engagement and transmission connection with the damping counterweights. Each damping counterweight is a revolving body. The ratio of driving shaft rotating speed and damping counterweight rotating speed is less than 1. The uni and bi-direction power load counterweight resistance element device has the characteristics that the structure is compact, the damping and buffering effect is significant, and the damping effect is adjustable.

The invention discloses a pressure spring vibration isolation system. The system comprises a panel, an ash blocking sponge, a glass, an upper pressing strip, a liquid crystal screen, an impact gasket,a mounting plate, a lower pressing strip and a vibration isolation device, wherein the two ends of the panel are connected with the upper pressing strip and the lower pressing strip through screws correspondingly; the vibration isolation device is composed of silicon rubber plates, pressure springs and a threaded steel ball spring lock pin; the pressure springs are embedded into the upper pressing strip and the lower pressing strip correspondingly; the silicon rubber plates are embedded into the upper pressing strip and the lower pressing strip correspondingly. According to the pressure spring vibration isolation system, the vibration isolation device is light in weight, and is mainly suitable for a reinforced display which is small in internal space and needs vibration reduction; the design of the vibration isolation device can meet the requirements of high and low temperature, three prevention and the like at the same time; when the vibration isolation device is impacted, the pressure spring reaches the limit, then the liquid crystal screen is in contact with the silicon rubber plates, strong impact can be isolated through the silicon rubber plates, so that good vibration isolation and buffering effects are achieved, an a good vibration isolation effect still good after being impacted, and the pressure can be increased by adjusting the threaded steel ball spring lock pin, so that the damping can be adjusted.

The invention provides a big data system for dragon boat training, which comprises a detection device, a sensing device, an adjusting device, a balancing device, a monitoring device, a traction device, a processing device and a processor, and is characterized in that the detection device is configured to detect the state of a boat body; the sensing device is configured to perform data acquisition on data of a user; the adjusting device is configured to adjust the posture of the ship body; the monitoring device is configured to monitor the action of the user; the traction device is configured to train actions of the user; and the processing device is configured to trigger a corrective alarm for the action of the training of the user. According to the invention, the balance of the ship body is adjusted by adopting the balance device, so that the posture of the ship body can be adjusted in the adjustment process of the ship body, the posture of a user can be ensured to be balanced to the maximum extent, and meanwhile, posture training or balance training of the user is also considered.

The invention discloses a damping component of an automobile suspension assembly. The damping component comprises an oil barrel, a working cylinder, a piston rod, a piston and a buffer spring. The working cylinder is arranged in an inner hole of the oil barrel. One end of the working cylinder is in sealed connection with the inner wall of the oil barrel. The other end of the working cylinder is insealed connection with the inner wall of the oil barrel through a rebound valve. The piston is arranged in the working cylinder and mounted at one end of the piston rod. The buffer spring is mountedon the piston rod. A guide sleeve is mounted at one end of the oil barrel. The piston rod penetrates out of the guide sleeve. The damping component is characterized in that the space between the oil barrel and the working cylinder is partitioned into two inner cavities through a seal ring, communicating holes are distributed in the positions, located on the two sides of the seal ring, of the oil barrel correspondingly, and the two communicating holes are connected to an oil inlet and an oil outlet of an electromagnetic throttle valve correspondingly. According to the damping component of the automobile suspension assembly, by adjusting the damping force, the damping component can adapt to different road surfaces, and riding is made more comfortable.

The invention discloses a novel dual-mass flywheel torsion damper. The novel dual-mass flywheel torsion damper comprises a transmission shaft, a driving flywheel, a transmission gear, a driven flywheel, a force transmission device, a first liquid storage cavity, a second liquid storage cavity, a first rack, a second rack, two first pistons, two second pistons and an excitation device, wherein thedriven flywheel is coaxially arranged on the transmission gear in an empty sleeving manner. The force transmission device is used for transmitting power from the driving flywheel to the driven flywheel. The first liquid storage cavity and the second liquid storage cavity are separately formed in the driven flywheel and are symmetrically arranged. The first rack and the second rack are movably arranged in the driven flywheel and are in engaged transmission with the transmission gear. The two first pistons are fixedly connected to the two ends of the first rack separately. The two second pistonsare fixedly connected to the two ends of the second rack separately. First piston containing cavities and second piston containing cavities are formed in the two ends of the first liquid storage cavity and the two ends of the second liquid storage cavity correspondingly. The two first pistons are separately arranged in the two first piston containing cavities in a matched mode, and the two secondpistons are separately arranged in the two second piston containing cavities in a matched mode. The excitation device is coaxially sleeved on the outer circumference of the driven flywheel in an empty manner.

The invention provides a device and a method for winding a sheet of material to a winding roll (5). The device has at least one roller (2, 3), on which the winding roll is applied during the winding, wherein the winding roll rotates during the winding with a maximum rotational frequency. The roller (2, 3) is mounted in a bearing device through a bearing (7, 8) at each roller end, wherein the roller (2, 3) and the bearing device have a first natural frequency. The first natural frequency is set to be less than the maximum rotational frequency of the roller for winding the sheet of material at a vibration threshold with fewest problems.

The invention relates to the technical field of commercial vehicles, in particular to a cab suspension system, a cab suspension system control method and a commercial vehicle. The cab suspension system comprises a three-way acceleration sensor, an air spring and a driving controller, and the three-way acceleration sensor is used for detecting the acceleration of a cab; the damping of the air spring is adjustable, and the air spring is installed on a chassis and located below the cab; and the driving controller is in communication connection with the three-way acceleration sensor and the air spring, and the driving controller is configured to control and adjust the damping of the air spring according to a detection result of the three-way acceleration sensor. According to the cab suspensionsystem, a shaking condition is judged through the three-way acceleration sensor, and then the damping force of the air spring is adjusted through the driving controller, so that the driving shaking problem is solved, and the driving comfort and safety are improved.

The invention provides a network construction and network following unified control method of a distributed photovoltaic power generation system. The method comprises the following steps: S1, constructing a network construction/network following unified control structure of the distributed photovoltaic power generation system; s2, constructing a constraint relation of the distributed photovoltaic power generation system according to the control structure in the S1; s3, designing a virtual distribution coefficient according to the constraint relation in S2, and deducing a virtual voltage synthesis equation; and S4, designing an additional active damping controller. According to the method, the power grid supporting capability of a network construction type control strategy and the rapid response capability of the network construction type control strategy facing system disturbance can be realized, and meanwhile, the damping adjustment capability of the distributed photovoltaic power generation system is improved through the active damping controller; and the operation reliability and stability of the distributed photovoltaic power generation system are further improved.

The invention relates to a high-speed punch damping adjustable vibration isolator. The high-speedpunch damping adjustable vibration isolator comprises an upper base plate and a lower base plate. A plurality of springs are arranged between the upper base plate and the lower base plate, a damping cylinder with a built-in damping fluid is arranged on the middle part of the lower base plate, a dampingplug with a lower end immerged in the damping fluid is arranged on the lower side of the upper base plate, the middle part of the upper base plate is vertically connected with a damping adjustment block through a thread,and the lower end of the damping adjustment block is immerged in the damping fluid and can move up and down by rotation. Through the screw characteristics of a damping block and ascrew structure with adjustable up and down displacement, different damping vibration isolation effects are obtained by adjusting according to the different damping forces required by a high-speed punch and the vibration isolation effects to be achieved.