137 results about "Rotational vibration" patented technology

The invention relates to the technical field of detection structures, in particular to a machine tool spindle dynamic balance testing device which comprises an eccentric vibration unit and an amplitude detection unit, the eccentric vibration unit can drive a shaft body to vibrate, and the amplitude detection unit can detect the vibration amplitude of the shaft body; the eccentric vibration unit comprises a supporting ring installed on the shaft body and a rotating body eccentrically rotating on the supporting ring. The shaft body is made to be static, the shaft body is driven to vibrate through rotation vibration of the eccentric vibration unit, and therefore the amplitude of the shaft body can be increased under the condition that the center of gravity of the shaft body deviates, and whether dynamic balance of the shaft body is qualified or not can be judged by detecting whether the amplitude meets the requirement or not. Therefore, the danger in the operation process is greatly reduced, and a safer, simpler, more convenient and more efficient dynamic balance test solution for the machine tool spindle can be provided.

The invention relates to a hydroelectric main shaft all-condition simulation test system and method, and the system comprises a fixed rack, one side of the fixed rack is provided with a tripping starting detection device, the fixed rack is provided with a hollow three-axis platform, a three-axis excitation system and a rotation driving part, the moving end of the three-axis platform is connected with a hollow floating rack, and a bearing is disposed in the floating rack. The rotation driving part comprises a power part and a main shaft connected to the torque output end of the power part, the main shaft is in transmission connection with the rotating disc, a hydroelectric large shaft used for a simulation test is installed on the rotating disc, and the three-shaft excitation system is used for applying X-direction, Y-direction and Z-direction high-frequency sine excitation loads to the hydroelectric large shaft of the rotating disc. The device is used for overcoming the defects that an existing testing device mainly focuses on vibration loading of a static mechanical device, simulation and performance testing cannot be carried out on dynamic behaviors under the composite working conditions of rotation, vibration and impact of a hydroelectric large shaft, and safety testing and rating cannot be carried out on a hydroelectric generating set sensor and a tripper overspeed protection device.

The invention discloses a motor control method of oral care equipment and a related device thereof. The oral care device comprises a motor, and the motor comprises a rotor. Acquiring a driving signal; controlling the rotor to perform reciprocating vibration relative to a reference axis based on the driving signal, and controlling the position of the reference axis to change so as to enlarge the coverage range of the vibration; the vibration comprises linear vibration or rotary vibration; wherein the driving signal is a preset signal. In this way, the vibration coverage range of the rotor is remarkably enlarged, and the oral cavity cleaning effect is improved.

The present invention relates to a vibration damper. The vibration damper comprises a spoke spring damper, wherein the spoke spring damper includes a central part, several spoke springs, and an outer ring part, the outer ring part radially surrounding the central part coaxially, the several spoke springs being arranged radially between the outer ring part and the central part and spaced apart from one another in the circumferential direction, the several spoke springs being elastically deformable and thereby allowing rotation of the outer ring part relative to the central part. The vibration damper further comprises a cover plate, the cover plate being fixed to the axial side of the central part and being rotatably in contact with the outer ring part, either directly or indirectly, so that when the outer ring part rotates relative to the central part, the cover plate can come into direct or indirect frictional contact with the outer ring part.The vibration damper of the present invention exhibits an improved damping effect.

A device for damping vibrations of a rotary drill string in motion in a wellbore, a related method, drill string and drill string sub or section, where at least one component of motion of the drill string is communicated to the device, and brake means counter the vibrations, resisting the motion in dependence upon the speed of motion. The device may have an outer sleeve arranged on an inner, tubular body which is rotatably arranged within the outer sleeve. Roller wheels support the sleeve on the wellbore wall and facilitate longitudinal movement of the device and prevent rotational slipping of the outer sleeve relative to the wall upon rotating the tubular body and drill string. One brake part of the brake means on the outer sleeve and another on the tubular body operate to resist rotational vibration components.

The grinding device comprises a shell, a control box is fixedly installed at the left end of the shell, a box door is rotationally connected to the front portion of the inner surface of the shell, and a grinding assembly is fixedly installed on the rear portion of the inner surface of the shell. A rotary vibration assembly is arranged on the rear portion and the front portion of the inner surface of the shell, and a cleaning assembly is arranged on the lower portion of the inner surface of the shell. According to the grinding device for precision bearing machining, the rotary vibration mechanism and the hydraulic mechanism are arranged, so that an outer ring of a bearing can be stably and internally supported, ultrasonic vibration is transmitted through a wave guide rod in the rotating process, heat accumulation caused by friction in the grinding process can be effectively reduced, and the grinding efficiency is improved. And meanwhile, the material removal efficiency in the grinding process is improved, the roughness of the machined surface is reduced, and finally the grinding quality and the performance stability of the bearing outer ring are improved.

A massage device comprising one or more generators of mechanical vibrations with a rotary-vibration or eccentric mechanism or a piezoelectric element, a central control unit, several waveguides for transmitting the vibration action to the body surface, and one or more microcontrollers controlling the vibration parameters for each of the waveguides, characterized in that the waveguides have a fractal 3D structure.

The present invention relates to an electromagnetic lock and a locker, wherein the lock comprises a housing, a locking hook, a locking element and a shock protection element, wherein the shock protection element is rotatably provided within the housing, wherein the shock protection element can rotate relative to the housing and has a starting position and an operating position, wherein the lock is designed such that - when the vibration protection part is in the starting position, the vibration protection part is separated from the locking part, and - when the vibration protection part is in the operating position, the vibration protection part can prevent the locking part, which is in a first position, from rotating to a second position, - if an external disturbance force drives the locking hook, which is in a locking position, to rotate in a set direction and separate from the locking part, the locking hook drives the vibration protection part, which is in the starting position, to rotate into the operating position, the set direction being the direction of rotation of the locking hook from the unlocking position to the locking position. This prevents unwanted unlocking caused by vibration.

A device for damping vibrations of a rotary drill string in motion in a wellbore, a related method, drill string and drill string sub or section, where at least one component of motion of the drill string is communicated to the device, and brake means counter the vibrations, resisting the motion in dependence upon the speed of motion. The device may have an outer sleeve arranged on an inner, tubular body which is rotatably arranged within the outer sleeve. Roller wheels support the sleeve on the wellbore wall and facilitate longitudinal movement of the device and prevent rotational slipping of the outer sleeve relative to the wall upon rotating the tubular body and drill string. One brake part of the brake means on the outer sleeve and another on the tubular body operate to resist rotational vibration components.

The invention relates to the technical field of flange flanging, in particular to a fluorine-lined magnetic flap flange automatic flanging device which comprises a mounting frame, the front end of the mounting frame is rotationally connected with a pair of sealing doors, the top end of the mounting frame is connected with a filter screen plate in an embedded mode, and the top of the filter screen plate is provided with a pair of fixing clamping seats. A connecting frame is fixedly connected to the top end of the mounting frame, and a lifting air cylinder is fixedly connected to the inner top end of the connecting frame. The rotating switching mechanism is matched with the polishing and cleaning mechanism and the rotating vibration mechanism, burrs and chippings on the end opening face of the fluorine-lined magnetic flap flange blank can be polished and cleaned, burrs and dust in the fluorine-lined magnetic flap flange blank can be removed, the situation that when the flanging die conducts extrusion flanging treatment, the surface of the flanging die is abraded due to the influence of the burrs is avoided, and the quality of the flanging die is improved. And meanwhile, the influence on the flanging flatness and quality of the fluorine-lined magnetic flap flange blank is avoided, and the good flanging effect of the port surface of the fluorine-lined magnetic flap flange blank is ensured.

The invention discloses a combined weighing system of a crystal growing furnace, which comprises a fixed plate, a weighing chamber is arranged on the fixed plate, a weighing component is arranged in the weighing chamber, the weighing component comprises a weighing base, the weighing base is fixed on the fixed plate, three small-range weighing sensors are distributed at the bottom of the weighing base in an annular array, and the three small-range weighing sensors are arranged on the fixed plate. The upper outer wall of the weighing base is in threaded connection with a dustproof cover. The invention also discloses a combined weighing measurement method of the crystal growing furnace. According to the invention, the contradiction between the measuring range and the measuring precision of the existing weighing device is solved, the measuring range is expanded to the sum of the measuring ranges of the three weighing sensors on the basis of high precision, and the problems of noise interference in crystal growth and eccentricity caused by rotating vibration of a rotating shaft are solved; high-precision filtering and dynamic weight fusion of the weight data are realized, and the data stability is improved.

The invention provides a reliability evaluation system and method for a two-degree-of-freedom rotational vibration energy collector, and belongs to the field of nonlinear rotational vibration energy collection, and the method comprises the steps: S1, constructing a kinetic model, and converting the kinetic model into a Hamiltonian form; s2, reducing dimensions by adopting a random average method; s3, calculating a drift coefficient and a diffusion coefficient; s4, constructing and solving a boundary value problem to verify the calculation precision; and S5, parameter sensitivity analysis and design optimization. According to the reliability evaluation system and method for the two-degree-of-freedom rotary vibration energy collector, the problems that in reliability analysis of an existing two-degree-of-freedom rotary vibration energy collector, high-dimensional coupling characteristics are difficult to capture, an analysis frame is incomplete, calculation efficiency is low, and parameter optimization lacks theoretical guidance are solved.

The utility model provides a kind of compressor vibration reduction structure and compressor, comprising: with the inner wall surface connection of the bottom shell of compressor at least three grid fins, all the grid fins are sequentially arranged around the circumferential of the bottom shell, the length of each grid fin is less than the radius of the inner wall surface of the bottom shell.The compressor vibration reduction structure utilizes the existing liquid in the bottom shell and the beating action of grid fin, directly generates reverse liquid impact force to hinder shell rotation vibration.

A motor control method for an oral care device and a related apparatus thereof. The oral care device comprises a motor (120). The motor (120) comprises a mover (301). The motor control method comprises: acquiring a driving signal, controlling, on the basis of the driving signal, the reciprocating vibration of the mover (301) relative to a reference axis, and controlling the position of the reference axis to change, so as to increase the coverage range of the vibration, wherein the vibration includes linear vibration or rotary vibration, and the driving signal is a predetermined signal. The coverage range of the vibration of the mover (301) is significantly improved. As a result, the oral cleaning effect is improved.

The application discloses a glass plate weighing system along with a line, which comprises a conveying roller, a weighing mechanism arranged above the conveying roller, a vertical moving mechanism, a suction cup connected to the bottom of the vertical moving mechanism, a pressure sensor arranged between the suction cup and the vertical moving mechanism, a vertical moving winch and a pull rope, a pull frame fixed to the bottom of the pull rope, the pressure sensor arranged on the pull frame, a horizontal plate arranged on the top of the suction cup and placed on the pressure sensor, a driving mechanism connected to the suction cup and used for extracting or injecting air in the suction cup. The glass plate weighing system along with the line has the beneficial effect that the glass plate is lifted and weighed, the weighing efficiency is ensured, the measurement accuracy is not affected by falling ash, slag and the like, and the measurement accuracy is not affected by the rotation vibration of the roller.

The invention relates to the technical field of stirring paddles, in particular to a uniform mixing bioreactor stirring paddle which comprises a column body, the rotating shaft is rotationally connected into the column body; through the innovative composite design of a double-layer differential transmission mechanism and vibration stirring, three-dimensional chaotic mixing is realized, and the mixing efficiency and quality are remarkably improved; the upper-layer first rotating mechanism drives a plurality of first stirring paddles to rotate at a set speed through a gear train formed by a first gear ring, a first gear and a second gear ring; the second rotating mechanism at the lower layer drives a second stirring paddle through another independent gear system, slides in a corrugated groove with a specific angle through a T-shaped block, and generates periodic radial vibration in combination with an elastic component; the rotation-vibration composite motion breaks the flow field symmetry of traditional one-way stirring, can effectively eliminate a mixing dead zone, enables nutrient substances, dissolved oxygen and cells to be highly uniformly distributed, and is especially suitable for a high-density and high-viscosity culture system.

This invention proposes a demolding device, comprising a first cavity, a first vibrating element, and a first colliding element. The first colliding element is located within the first cavity, and the first vibrating element drives the first colliding element to bounce within the first cavity and collide with the material inside the first cavity. The demolding device of this invention, through the bouncing of the first colliding element within the first cavity, causes the first colliding element to collide with the material inside the first cavity, thereby separating the zipper head from the frame. This effectively avoids the mutual collision and wear of the zipper heads caused by rotational vibration demolding methods. Furthermore, this demolding device can be adapted to various conveying components, and is simple in structure and efficient.

The rotary vibration material heat treatment device comprises a sleeve, a vibration module, a rotation module and a sample table, the vibration module and the rotation module are arranged in the sleeve, and the output ends of the vibration module and the rotation module extend out of the sleeve to be connected with the sample table; the rotating module comprises a rotating driving assembly, a first rotating assembly, a second rotating assembly and a third rotating assembly, the output end of the rotating driving assembly is connected with the first rotating assembly, the first rotating assembly is connected with the third rotating assembly through the second rotating assembly, and the sample table is arranged on the third rotating assembly; the second rotating assembly comprises a supporting ring, a male ring buckle, a female disc buckle, a second support and an eccentric correction structure. The device has the advantages that the device can be mounted in a compact high-intensity magnetic field environment; after eccentricity occurs during rotation, real-time compensation of dynamic eccentricity can be realized under the action of the eccentricity correction structure, and eccentricity during rotation is prevented, so that rotation stability is ensured.

The invention discloses a brushless direct current vibration motor, and relates to the technical field of motor equipment. Comprising a motor body, continuous rotation is converted into instantaneous pulse impact through meshing of an inner ratchet ring, a tooth block and a pawl, high-quality and high-strength click type tactile feedback is generated and far exceeds the rotating vibration texture of a traditional ERM motor, a centrifugal clutch is formed by a first spring and a first telescopic rod, and the motor body is driven by the first telescopic rod to rotate. By means of the structure, strong impact can be generated only at the high rotating speed, decoupling of the vibration strength and the rotating speed is achieved, false triggering impact at the low speed is effectively buffered, the mechanism is protected, and a mechanical buffering layer is built between the movable block and the rotor body through the limiting assembly. The impact force and noise generated when the movable block is thrown out and withdrawn and collides with the body are greatly reduced, the problems of material fatigue and damage caused by inertial collision are effectively solved, the durability of the impact mechanism is remarkably improved, and the service life of the impact mechanism is remarkably prolonged.

The utility model discloses an automatic scraper driving device of a rail type rotary vibration machine. The automatic scraper driving device comprises a housing, the inner wall of the housing is connected with a guide rail arranged in the circumferential direction of the rotating shaft, the guide rail is obliquely arranged in the axial direction of the rotating shaft, and a rotating arm moving along the guide rail is fixed to the rotating shaft. The vibrating device has the advantages that in the rotating process of the rotating shaft, the rotating arm moves from the lowest position to the highest position along the guide rail and drives the rotating shaft to be lifted upwards under the guiding action of the spline, the rotating arm falls to the lowest position of the guide rail after passing through the highest position, and at the moment, the rotating shaft also falls downwards to play an effective vibrating role on aggregates on the inner wall of a receiver and a scraper; in this way, when the rotating shaft rotates, the rotating shaft ascends and descends in a reciprocating mode according to the process, and the purpose of effectively removing the accumulated objects on the inner wall of the receiver is achieved.

The invention discloses a rotary vibration test measuring device and a rotary vibration test measuring method, and belongs to the technical field of oil and gas development direction measuring instruments, the rotary vibration test measuring device comprises a rotary vibration measuring electrical output device, a rotary vibration measuring platform, a rotary transmission mechanism and a rotary supporting mechanism; the rotary vibration measurement electrical output equipment is used for outputting axial rotary power and transmission signals when the actual underground working condition is simulated in the rotary vibration test measurement process; the rotary vibration measurement platform is used for supporting the rotary vibration measurement electrical output equipment, the rotary transmission mechanism and the rotary supporting mechanism; the rotation transmission mechanism is used for transmitting energy and power output by the rotation vibration measurement electrical output equipment to the whole system; the rotation supporting mechanism is used for balancing the rotation vibration measurement electrical output device and the rotation transmission mechanism on the same horizontal plane. The device is used for carrying out actual underground working condition simulation on the data acquisition unit before the device descends into a well.

The utility model relates to the technical field of conveying equipment, and discloses needle valve conveying equipment which comprises rotary vibration equipment, a hydraulic rod is fixedly installed on the inner bottom wall of the rotary vibration equipment, conveying equipment is fixedly installed in the middle of the inner wall of the hydraulic rod, and the output end of the hydraulic rod is fixedly connected with a servo motor. A connecting rod is fixedly connected to the output end of the servo motor, fixing shells are fixedly connected to the left side and the right side of the connecting rod, and a plurality of reset springs are fixedly connected to the sides, away from each other, of the inner walls of the two fixing shells at equal intervals. The sides, away from each other, of the multiple reset springs are fixedly connected with mounting shells. According to the cleaning device, the fixing shell is driven by the connecting rod to rotate, so that the cleaning brushes can clean the inner wall of the rotary vibration equipment, and the cleaning brushes can be tightly attached to the inner wall of the rotary vibration equipment through the elastic force of the reset springs, so that the cleaning effect is improved, and the conveying efficiency is further improved.

The invention relates to the technical field of pre-tightening force analysis, in particular to an optimal pre-tightening force analysis method and system for an electric spindle, and the method comprises the steps: carrying out the rotation vibration balance of a running electric spindle, obtaining a balanced electric spindle, carrying out the rigidity and temperature measurement of the balanced electric spindle, and obtaining a spindle rotation rigidity set and a spindle change temperature set; the pre-tightening force measuring unit is used for conducting sound wave measurement on the balanced electric spindle to obtain a sound wave pre-tightening force set and a piezoelectric pre-tightening force set, pre-tightening force curve fitting is conducted on the sound wave pre-tightening force set and the piezoelectric pre-tightening force set to obtain a sound wave pre-tightening force curve and a piezoelectric pre-tightening force curve, and according to the sound wave pre-tightening force curve and the piezoelectric pre-tightening force curve, the sound wave pre-tightening force curve and the piezoelectric pre-tightening force curve are obtained. According to the method, the candidate pre-tightening force line segment set is identified, the candidate test environment group set is confirmed, the optimal pre-tightening force table is constructed based on the candidate pre-tightening force line segment set and the candidate test environment group set, and the accuracy and efficiency of analysis of the optimal pre-tightening force of the motorized spindle can be improved.

The invention discloses a device for monitoring vibration and temperature of equipment, which comprises a self-adaptive sleeve shaft mounted on a rotating shaft of driving equipment and a vibration sensor mounted on the outer side of the self-adaptive sleeve shaft, and the self-adaptive sleeve shaft can keep a static state independent of the rotating shaft of the driving equipment. The vibration sensor is used for monitoring vibration amplitude of a rotating shaft of driving equipment; a temperature sensor is mounted on the self-adaptive sleeve shaft and is used for monitoring the temperature of a rotating shaft of the driving equipment; the vibration sensor and the temperature sensor are connected with a central processing system, and the central processing system is used for receiving an output signal of the vibration sensor and an output signal of the temperature sensor and giving an alarm when the vibration amplitude and the temperature of a rotating shaft of the driving equipment exceed set threshold values; when the rotary vibration of the driving equipment is measured, friction cannot be generated on the sensing surface of the vibration sensor, and the service life of the vibration sensor is prolonged.

The invention relates to a torsional vibration damper (10) for reducing torsional vibrations, comprising a housing (14) surrounding an interior space (12) and, within the interior space (12), a vibration damper (18) rotatable about an axis of rotation (16) with a radially outer mass element (32), with a radially inner mounting area (34), and with several circumferentially distributed and each extending mainly radially and connecting the mass element (32) to the mounting area (34), wherein the mass element (32) is rotatable relative to the mounting area (34) at least against the spring force of the spoke springs (36), wherein a viscous medium (22) is received in the interior space (12), at least partially surrounding the vibration damper (18), for damping the relative rotational movement between the vibration damper (18) and the housing (14), and the interior space (12) is sealed with respect to the viscous medium (22).

This invention relates to the field of pipe pile disassembly and assembly technology, and in particular to an end plate nut disassembly and assembly mechanism and an end plate disassembly and assembly machine. The end plate nut disassembly and assembly mechanism includes: a mounting frame, on which a base plate is rotatably connected, and the base plate is provided with several frames; a rotating device for driving the base plate to rotate; a disassembly and assembly device, which includes a position adjustment component, a sleeve, and a drive component; an adaptive clamping device, which includes a snap-fit ​​block and an adaptive compensation component; and a fixing device, which includes an adsorption component, a vibration triggering component, and an anti-loosening component. This invention achieves automatic centering during the nut insertion stage through the cooperation of the snap-fit ​​block and the compensation component, and forms a dynamic clamping enhancement mechanism with the vibration triggering anti-loosening component, effectively avoiding stripping and detachment; at the same time, the adsorption component and the snap-fit ​​block provide initial clamping force, and the anti-loosening component automatically strengthens the clamping when rotational vibration is detected.

The invention relates to the technical field of drilling well deviation simulation, in particular to a rotary vibration simulation device, which is used for solving the problem that the influence of a drilling environment on a measuring device is not easy to verify, and comprises a base, an angle table is mounted on the base, a motor is fixedly connected to the angle table, and a PCB (Printed Circuit Board) to be tested is mounted at the output end of the motor; a first inserting rod and a second inserting rod are inserted into the two ends of the base respectively, a first inserting hole matched with the first inserting rod is formed in one end of the angle table, and a plurality of angle adjusting holes matched with the second inserting rod are formed in the other end of the angle table and the other end of the base. A first conical ring is arranged at one end of the second insertion rod, and a second conical ring is slidably connected to the other end; the device can simulate the drilling state, facilitates the understanding of the measurement error of the measurement device in the state, and provides a reference for drilling parameters.

The invention discloses an experimental device and method for researching a high-rotating-speed instability interval of rotor oil. The experimental device comprises a frame, a rotating shaft, an oil tank, a first bearing, a second bearing, a storage plate, a plurality of partition plates and a processor. Round holes are formed in the middle of the top plate and the middle of the storage plate. The first bearing and the second bearing are installed in the round holes of the storage plate and the top plate of the frame through the first bearing seat and the second bearing seat respectively. The rotating shaft vertically penetrates through the first bearing and the second bearing from top to bottom, is connected with the oil tank located between the storage plate and the bottom plate and carries the oil tank to horizontally rotate under the action of the motor. One end of each partition plate is connected with a stand column located in the center of the oil tank, the other end of each partition plate is connected with the inner side face of the oil tank, and the oil tank is evenly divided into a plurality of sub-areas. The device can effectively simulate the vibration phenomenon of oil under the condition of the baffle, the baffle is convenient to assemble and disassemble, and the device is suitable for related research of rotor dynamics about oil rotation vibration.

The invention relates to a torsional vibration damper (10) for reducing torsional vibrations, comprising a first damper component (16) rotatable about an axis of rotation (14), at least one spring element (22), a second damper component (26) rotatable about the axis of rotation (14) and rotatable relative to the first damper component (16) against the spring force of the spring element (22) within limits, a disc spring element (34), and a friction element (42), wherein the friction element (42) is subjected to an axial force of the disc spring element (34) and is thus frictionally coupled to the first damper component (16) and is also positively connected to the disc spring element (34) in a rotating manner, wherein at least one tab (48) is formed on one component (46) of the two components consisting of the friction element (42) and the disc spring element (34), which engages in a circumferential recess (50) in the other component (52) at least with respect to a first circumferential direction (54) effectively engages in a form-fitting manner.

This device provides a vibration power generation device that generates high electromotive force by causing the air gap of the magnetic circuit to change more significantly and rapidly than in conventional devices. [Solution] The vibration power generation device 10 comprises a magnetic circuit 11 in which a magnetic flux capturing part 15 or magnetic flux leakage part 13 provided at one end of a first magnetic material member 12 and a magnetic flux leakage part 13 or magnetic flux capturing part 15 installed at one end of a second magnetic material member 14 face each other with an air gap 21 in between, and the other ends of the first magnetic material member 12 and the second magnetic material member 14 are connected via a support shaft 16, thereby enabling relative rotation around the support shaft 16; a vibration transmission device 18 having a vibration receiving part 24 at one end and the other end fixed to the first magnetic material member 12; a coil 20 wound between the magnetic flux leakage part 13 or magnetic flux capturing part 15 of the second magnetic material member 14 and the support shaft 16; and an elastic body 22 configured to exert a restoring force in the direction that narrows the air gap 21 when an attempt is made to widen it.