30results about How to "Suppression of vibration amplitude" patented technology

The invention relates to an RWD automobile gearbox transmission error detection test bench and a comprehensive testing method, and belongs to the technical field of automobile gearbox detection. The test bench comprises a test bench device and an adjustment and supporting device. The test bench device comprises an AC drive motor, an input end elastic shaft coupler, an input end transmission error comprehensive detection device, an input end cv-joint synchronous universal shaft coupler, a gearbox input spline shaft, a tested gearbox, a gearbox output flange shaft, a first output end elastic shaft coupler, an output end transmission error comprehensive detection device, a second output end elastic shaft coupler, a two-gear reduction gearbox, an output end cv-joint synchronous universal shaft coupler, and an AC loading motor. The test bench is advantageous in that the device employs a U-shaped layout and reduces the area of an occupied land; the test bench can measure the static and dynamic transmission errors of the gearbox at the same time; the test bench employs the two-gear reduction gearbox and a sliding table mechanism, can meet the testing requirements of different types of gearboxes, and improves the universality of the test bench.

A glow plug including a center pole extending along an axial direction; a heater including a heating element capable of generating heat upon energization, which heater is connected to a leading end portion of the center pole so as to constitute together with the center pole an integrated heater / center pole member in a mechanically rigid state; a metal shell as defined herein; and a vibration preventing member for preventing vibration of the center pole, the vibration preventing member being fixed on an outer peripheral surface of the center pole at an axial position corresponding to a portion where an inside diameter of the axial hole of the metal shell is constant.

The invention provides a vibration damper of a swing blade gust generator. The vibration damper comprises a constant pressure valve, an exhaust pipe, an intake pipe, an intermediate inflatable soft board, an upper partition plate, a lower partition plate and two groups of compression springs, wherein a radial displacement gap is formed between a rotating shaft of a swinging blade and a bearing; the upper partition plate and the lower partition plate are positioned in the radial displacement gap; the intermediate inflatable soft plate is mounted between the upper partition plate and the lower partition plate; the two groups of compression springs are further located between the upper partition plate and the lower partition plate and located on the two sides of the intermediate inflation soft plate; the exhaust pipe and the intake pipe are connected with the intermediate inflation soft plate; and the constant pressure valve sets a pressure value according to the swing frequency and angleworking conditions of the swing blade and controls the air pressure in the intermediate inflation soft plate. According to the vibration damper, the bearing clearance of the rotating shaft of the gust generator can be suppressed according to the operating frequency and the operating angle of the swing blade gust generator, the vibration amplitude of the swing blade gust generator during working is effectively reduced, and the working efficiency of the swing blade gust generator is improved.

The invention relates to a testing stand for testing the transmission error of a mechanical gearbox of a front drive automobile and a comprehensive testing method, and belongs to the technical field of automobile gearbox test. The testing stand comprises a driving motor, an input shaft resilient coupler, a comprehensive input shaft transmission error detection device, an input shaft cage-type synchronous universal shaft coupler, a gearbox input spline shaft, a certain type gearbox, a first output shaft resilient coupler, a comprehensive first output shaft transmission error detection device, an arc tooth synchronous belt drive input shaft resilient coupler, an arc tooth synchronous belt transmission device, an arc tooth synchronous belt transmission output shaft resilient coupler, a first loading motor, a second output shaft cage type synchronous universal shaft coupler, a comprehensive second output shaft transmission error detection device, a second output shaft resilient coupler and a second loading motor. The testing stand is novel in structure, the first loading motor is arranged in a bias manner, the occupied space is small, and static and dynamic transmission errors of a gearbox can be measured. The testing stand has high universality.

The invention provides a robot control method with an automatic parameter optimization function, a control device and a robot. The control method comprises the following steps of establishing a kinetic model of a driving joint of the robot; setting a servo parameter optimization criterion, and determining a per-unit reference value of a servo parameter of the driving joint according to a dynamic model of the driving joint; calculating and updating the load inertia corresponding to each driving joint in the current state according to the state of the robot; calculating the optimal value of the servo parameter of each driving joint according to the updated load inertia corresponding to each driving joint in the current state and the set servo parameter per unit reference value of each driving joint; and synchronously downloading the optimized values of the servo parameters of the driving joints to servo drivers of the driving joints in real time so as to control the driving joints. The vibration amplitude of the robot during operation can be remarkably restrained, and meanwhile the requirement for the response speed is considered.

A motor mounting device having a motor adapter that is formed substantially ring-shaped or pot-shaped and is used to receive a motor, and having a motor mount, which is used to hold the motor adapter, whereby elastic damping elements are disposed between the motor adapter and the motor mount, whereby the damping elements are formed as extruded profiles.

The invention provides a motor end cover, which comprises a main body and a bearing seat. The main body comprises a hollow cylindrical side wall and an annular top cover; the bearing seat comprises a hollow cylindrical outer layer body and a hollow cylindrical inner layer body; and the side wall, the top cover and the outer layer body are formed in an integrated stretching mode. the bearing seat of the motor end cover of the invention is separated into the outer layer body and the inner layer body, and compared with a past bearing seat which is formed in an integrated mode after stretching for multiple times and then finishing, realization of high coaxiality is more facilitated. In addition, as the number of stretching is reduced, anisotropy, cold-work hardening and stress influences of a plate are reduced, roundness of a main body inner circle of the motor end cover is improved. On the basis that coaxiality and roundness are enhanced to a certain degree, the vibration amplitude, the frequency and the noise of the motor during the operation process are restrained, an air gap between a stator and a rotor is reduced, the motor efficiency is improved, and the motor with the motor end cover can be actively and meaningfully applied to various industries.

The invention relates to a vibration damper of an impact type scarifier. The vibration damper comprises a scarifier cross beam (1), a damping material cavity (2) and damping particles (3). The sealed damping material cavity (2) is formed in a cross beam cavity (12) of the scarifier cross beam (1), and the damping material cavity (2) is filled with the damping particles with a certain particle size. The vibration suppression and damping aim is achieved through multi-direction multi-phase friction, collisions and power consumption between the damping particles and between the particles and the wall of the damping material cavity, and compared with the prior art, the vibration damping effect is better, the vibration influence of the impact type scarifier on the structure and parts of a bulldozer can be effectively reduced, the service life of the bulldozer is prolonged, and the work environment of operation personnel is optimized.

The embodiment of the invention provides a bottom foot device and mechanical equipment. The bottom foot device comprises a containing part, a damping piece, a supporting leg, a clamping unit and a locking unit, a containing cavity is formed in the containing part, the damping piece is arranged in the containing cavity, the top end of the supporting leg extends into the containing part and can slide in the containing cavity, the clamping unit is provided with a clamping space and a deformation groove which are communicated, the supporting leg is arranged in the clamping space in a sliding and penetrating mode, and the locking unit is located on the transverse side of the supporting leg and can drive the clamping unit and the supporting leg to be switched between the locking state and the unlocking state in the rotating process. According to the bottom foo device, after automatic leveling is achieved, the clamping unit and the supporting leg are locked bu using the locking unit, the supporting leg and a machine body of the mechanical equipment are connected into a rigid whole, and even if the mechanical equipment vibrates, the machine body cannot move relative to the supporting leg,so that the vibration amplitude of the machine body is restrained, and the vibration noise is lowered.

The invention provides a seedling transplanting device, wherein the spacing among seedlings is made larger, so that the travellign speed is improved. Meanwhile, the rotating speed of a transplanting rotation shaft is improved, and the vibration / resonant oscillation of a transmission rotator is prevented. The transplanting rotation shaft (30) is provided with a rotation housing (31) and the rotation housing is provided with a transplanting rod (27). The rotation housing is provided with an eccentric input gear (40) capable of freely rotating relative to the transplanting rotation shaft (30); a rotating shaft (34) for driving a cultivation rod to rotate is provided with an eccentric output gear (42); and a relay input gear (41) used for transmitting the drive power from the eccentric input gear to the eccentric output gear.

The invention relates to the field of obstacle detection sensors, in particular to an ultrasonic wave sensor for improving sensitivity through the wire stripping process. By means of the ultrasonic wave sensor for improving the sensitivity through the wire stripping process, twice commutation is cancelled, the problems of insufficient joint and electric lead breakage caused by twice commutation in the prior art are solved, and the problems that a product does not work and does not work continuously are solved on the premise that the functions of the products are achieved. According to the ultrasonic wave sensor for improving the sensitivity through the wire stripping process, a transit adapter plate in the prior art is abandoned, the wire at one end of the signal output positive electrode line is stripped, and the problems in the prior arts are solved,. The ultrasonic wave sensor for improving the sensitivity through the wire stripping process is applied in the field of ultrasonic wave sensing design of the ultrasonic wave sensor in an automatic parking system.

The invention provides an inductor assembly, a preparation method of the inductor assembly and a display device. The inductor assembly comprises an inductor, the inductor comprises a magnetic core, a magnetic ring and a multi-turn coil, the magnetic core is provided with a first bearing part, a winding part and a second bearing part which are connected in sequence, the magnetic ring is connected with the first bearing part and the second bearing part, the multi-turn coil is wound around the winding part, and a first gap is formed between every two adjacent coils; and the damping part is used for filling at least partial area of the first gap. According to the inductor assembly provided by the invention, the vibration amplitude and frequency of the multi-turn coil can be reduced by filling at least part of the area of the first gap with the vibration reduction piece, so that howling generated in the working process of the inductor is inhibited or even eliminated.

The invention discloses an annular multi-split vibration-damping galloping preventer which comprises a closed annular tube. The external surface of the annular tube is provided with a plurality of lead clamps. The annular tube is internally provided with a vibration damping system. Furthermore antifreezing and anti-corrosion liquid is filled in the annular tube. According to the annular multi-split vibration-damping galloping preventer, integrated design of a spacer rod a multi-split galloping preventer is realized. The vibration damping system which is arranged in the closed annular tube can restrain the vertical vibration amplitude of the lead to a certain extent by means of self weight for preventing an overlarge tension load of the lead because of excessive deformation of the lead on one hand; and on the other hand, the vibration damping system can generate resonance before a power transmission lead for consuming system energy, thereby reducing torsion and vibration degrees, and prolonging service life of a lead system. Through reducing torsion amplitude of the multi-split lead in galloping, the annular multi-split vibration-damping galloping preventer has functions of effectively restraining vibration amplitude, improving a lead operation environment, and prolonging service life of the lead.

A vibration control device comprises a vibration signal processing device and a single-shaft flexible hinge. The anti-vibration device, the first vibration detection device and the second vibration detection device are arranged on the upper plane of the single-shaft flexible hinge. The first vibration detection device and the second vibration detection device are respectively connected with the vibration signal processing device through data lines and are respectively used for detecting an initial vibration signal and a residual vibration signal of the single-shaft flexible hinge; the vibration signal processing device is used for calculating an anti-vibration signal according to the residual vibration signal, calculating an error signal according to the initial vibration signal and the anti-vibration signal, and transmitting the anti-vibration signal to the anti-vibration device; the anti-vibration device is used for generating control force on the single-shaft flexible hinge according to the anti-vibration signal, so that the vibration amplitude of the single-shaft flexible hinge is reduced; and the process is repeated until the error signal is zero, and the vibration control device stops working. An active vibration control mode is provided, and the response speed of the vibration control system is improved.

The invention relates to a method for levelling a checkered plate through a hot-rolling levelling unit, and belongs to the technical field of hot-rolling levelling units. According to the technical scheme of the method for levelling the checkered plate through the hot-rolling levelling unit, the mechanical aspect relates to model selection of a leveling machine HGC hydraulic cylinder and model selection of rolling line adjusting device; the electrical aspect comprises optimization of transmission control system speed slope parameters, optimization of a HGC screwdown control system PI adjuster and a proportionality coefficient and filtering treatment in pressure sensor feedback value; and an original single sine negative convexity or multi-power negative convexity roll shape of a working roll is changed, and an experience curve is used. The method for levelling the checkered plate through the hot-rolling levelling unit has the beneficial effects that the problem of levelling the checkered plate through the hot-rolling levelling unit is solved, meanwhile, the production efficiency is also improved obviously, the levelled checkered plate product quality accords with a technical index requirement, and good economic benefits are created for an enterprise.

The invention discloses a normal vector square type acceleration and deceleration control algorithm, which belongs to the technical field of motion control in a numerical control system, and comprises algorithm input parameters including a system mechanical property constraint condition, a track constraint condition and an output time parameter. The method comprises the following four steps: defining a time parameter, defining a relational expression between each parameter curve of the researched versine square type acceleration and deceleration algorithm and the time parameter, implementing the versine square type acceleration and deceleration control algorithm, and implementing the versine square type acceleration and deceleration control algorithm. The motion time of seven motion sections output by the sine square curve acceleration and deceleration control is determined, and the jerk, the acceleration and the speed do not exceed the mechanical performance constraint of the system, so that the sine curve acceleration and deceleration control algorithm can be implemented, the acceleration is continuous, the system excitation is reduced, and the jerk is continuous and smooth. The continuity and smoothness of a speed curve are met, and the vibration of the vertical column of the stacking machine is inhibited.

The invention relates to an RWD automobile gearbox transmission error detection test bench and a comprehensive testing method, and belongs to the technical field of automobile gearbox detection. The test bench comprises a test bench device and an adjustment and supporting device. The test bench device comprises an AC drive motor, an input end elastic shaft coupler, an input end transmission error comprehensive detection device, an input end cv-joint synchronous universal shaft coupler, a gearbox input spline shaft, a tested gearbox, a gearbox output flange shaft, a first output end elastic shaft coupler, an output end transmission error comprehensive detection device, a second output end elastic shaft coupler, a two-gear reduction gearbox, an output end cv-joint synchronous universal shaft coupler, and an AC loading motor. The test bench is advantageous in that the device employs a U-shaped layout and reduces the area of an occupied land; the test bench can measure the static and dynamic transmission errors of the gearbox at the same time; the test bench employs the two-gear reduction gearbox and a sliding table mechanism, can meet the testing requirements of different types of gearboxes, and improves the universality of the test bench.

The invention relates to a local constraint damping layer vibration test tool comprising a test frame which is formed by multiple channel steel through welding. A single constraint damping layer or multiple constraint damping layers is / are installed on the local position of a part of channel steel in the test frame. The constraint damping layers are installed on the conventional vibration test tool to absorb excess vibration energy, especially the vibration component of the inherent frequency, in the vibration test process of the tool so that the effect of suppressing the vibration amplitude of the resonant frequent can be achieved, the amplification or attenuation amplitude of vibration transmitted to the test system or equipment from a vibration table is ensured to be low as much as possible and the over-test or under-test phenomenon of the system or the equipment in the vibration test process can be avoided. In a word, the constraint damping layers are adhered on the local position of the conventional tool so that the vibration transmission performance of the tool near the inherent frequency can be greatly improved, and the influence on the overall static stiffness and dynamic stiffness of the tool is quite low.

The invention relates to a device for improving stiffness of a large wind turbine blade. The device comprises a blade displacement monitoring system, a blade stress monitoring system and a stiffness performance adjustment system which are mounted on the large wind turbine blade, the blade displacement monitoring system comprises a transmitting terminal, a receiving terminal, a computational integration module and an imaging surface, the stiffness performance adjustment system comprises a pull system, a steel wire, an anchor plate, a tension sensor, a fixed bolt and a signal transmission module, and the blade stress monitoring system is composed of a plurality of stress sensors and a data integration module. The device has the advantages that pre-stress can be applied to the blade, the vibration amplitude of the large wind turbine blade is suppressed, the phenomenon of adverse vibration generated under a natural wind environment or seismic action is relieved, meanwhile, the whole safetyand working reliability of the blade are ensured, and normal operation of wind turbine facilities is facilitated.

The invention discloses a vibration suppression device and suppression method after hot galvanized strip steel gets out of a zinc pot. The vibration suppression device comprises an upper vibration suppression roll, an upper transverse movement mechanism, a lower vibration suppression roll, a lower transverse movement mechanism, an upper laser range finder, a lower laser range finder, an encoder and a PLC control system. The laser range finders are used for feeding back the surface position of the strip steel in real time. The PLC control system is used for carrying out difference calculation on the actual measured distance of the laser range finders and the set distance to determine the actual vibration amplitude of the strip steel. When the vibration amplitude of the strip steel exceeds aset threshold value, the transverse movement mechanisms drive the vibration suppression rolls to get close to the strip steel to suppress the vibration amplitude of the strip steel and limit the vibration amplitude within the set threshold value. The encoder is used for feeding the running speed of the strip steel in real time and controlling the rotating speed of the vibration suppression rollsto ensure that linear speed of the roll surfaces of the vibration suppression rolls is in line with the running speed of the strip steel and protect the surface of the strip steel against scratches. The vibration suppression device remarkably reduces the vibration amplitude of the strip steel, ensures the thickness uniformity of a galvanized layer of the strip steel, protects the surface of the strip steel against scratches and meets the requirements for production of high-quality galvanized strip steel.

The invention provides a low-vibration motor with a vibration-isolation sleeve structure, comprising: a motor, a stator vibration-isolation sleeve and a rotor vibration-isolation sleeve; the stator vibration-isolation sleeve is fixed on the inner wall of the motor base, and the stator iron core; the rotor vibration isolation sleeve is installed in the bearing chamber of the motor end cover, and the inner wall of the rotor vibration isolation sleeve is embedded in the bearing. The stator vibration isolation sleeve is made of damping alloy material, which is cylindrical and longer than the length of the stator core in the axial direction of the motor; the rotor vibration isolation sleeve is made of damping alloy material, with an outer flange on the edge, and the surface of the flange is There are screw holes; there is also a bearing block in the rotor vibration isolation sleeve. The invention adds a vibration isolation sleeve structure to the vibration transmission path of the motor to reduce vibration transmission and effectively reduce vibration noise. The installation of the device structure is firm and reliable, and does not affect the mechanical performance of the motor; the structure of the stator and rotor of the motor is not changed, and the electrical performance of the motor is not affected; the installation is convenient, the replaceability means strong versatility, and it is easy to implement.

The invention provides a multi-stage excitation double-cylinder magnetorheological damper and a control method thereof. The damper comprises a base, an inner cylinder, an outer cylinder, a guide sealing assembly, a piston assembly and a magnetic circuit assembly. Openings in the two ends of the outer cylinder are plugged through a guide sealing assembly and a base respectively. And the inner cylinder is coaxially arranged in the outer cylinder. And a runner cavity is formed between the outer wall of the inner cylinder and the inner wall of the outer cylinder. The magnetic circuit assembly is arranged in the flow channel cavity. And when the coil is electrified, the circulation channel I adjacent to the coil is converted into an active flow gap. Positive electrodes of the (N-1) coils are independently led out from the base. And the (N-1) coils share the negative electrode. And the negative electrodes of the (N-1) coils are connected in parallel and then are led out from the base. The constant voltage source excites the coil. According to the damper, the controllable damping force range of the magnetorheological damper is greatly expanded. The magnitude of the damping force is controlled by controlling the number of the active flow gaps by adjusting and controlling the applied magnetic field, and combination of different damping force control ranges is achieved.