50results about "Rotating bodies balancing" patented technology

The invention discloses a servo direct-drive high-frequency swing mechanism, and belongs to the technical field of bearing machining equipment. A swing spindle attached to the housing; one end of an output shaft of the servo motor is connected with the rear end of the swinging main shaft, and the other end is connected with a servo encoder for controlling the swinging amplitude and the swinging frequency of the swinging main shaft; the swing head part is connected with the front end of the swing spindle and used for machining a bearing groove, a front end cover is arranged at the front end of the swing spindle and connected with a support, a screw is rotationally connected to the support, and the shell is in threaded fit with the screw. The swing frequency adjusting device has the characteristics of shortened and compact structure, convenience in adjustment, attractive appearance and the like, and the swing frequency of the ball bearing channel superfinishing machine can be improved, so that the superfinishing rhythm is accelerated, the superfinishing precision is improved, and the machining performance of a machine tool is improved.

To provide a resin composition that allows curing to a deep region by irradiation with energy rays.SOLUTION: The present invention relates to a photocurable resin composition comprising a radical polymerizable component (A), a photopolymerization initiator (B), a filler (C), and an organic peroxide (D), wherein the component (A) includes a polyfunctional (meth)acrylate (A1) and / or a monofunctional (meth)acrylate (A2) having a (meth)acrylamide group, the component (B) is an intramolecular cleavage-type photoradical polymerization initiator, the component (C) has a specific gravity of 4.0 or more, a total content of the component (A1) and the component (A2) is 26 pts.mass or more and 100 pts.mass or less with respect to 100 pts.mass of the component (A), and a content of the component (D) is 1.3 pts.mass or more with respect to 100 pts.mass of the component (A).SELECTED DRAWING: None

The present invention relates to a grinding machine comprising a housing, a drive assembly, a fan assembly, and a base assembly. The drive assembly has a motor shaft. The fan assembly comprises a mounting disc as well as cooling fins and dust collection fins integrated into the mounting disc. The fan assembly has a partially thickened first weight section integrated into a second surface, the mass of which is less than or equal to 13% of the mass of the fan assembly. A balancing element is provided between the fan assembly and the base assembly, the balancing element having a center-of-mass adjuster projecting from a circumference and located on the same side of the motor shaft as the first weight section.In the invention, weight balancing is achieved by means of the fan arrangement and the independent balancing element in order to achieve a good compromise between the functionality (cooling, dust collection and weight balancing), economy and ease of use of the grinding machine.

A non-marking, adhesive wheel balancing weight, characterized in that: it comprises an upper balancing weight body (2) and a lower adhesive component (1) which is a non-marking foam adhesive tape, for the adhesive component (1) a first adhesive film layer (1.1), a foam layer (1.2), a second adhesive film layer (1.3), a mixed intermediate layer (1.4), a third adhesive film layer (1.5) and an insulating film layer (1.6) are provided in sequence from the direction of the balancing weight body (2); that the mixed intermediate layer (1.4) is made of 21% PET materials and 79% foam materials.

This disclosure relates to the geometry of a balance ring. A ring-shaped component assembly for mounting to a shaft of an aircraft engine is provided. The assembly includes a first annular body having a surface defining a plurality of pull features extending from the remainder of the surface and circumferentially spaced apart. The assembly includes a second annular body defining a balance ring concentric with the first annular body, the balance ring having a plurality of protrusions and circumferential spaces between adjacent protrusions, the circumferential spaces accommodating the pull features such that the pull features of the first annular body are clamped to the protrusions.

To provide an improved system and method for balancing a rotor.SOLUTION: A rotor (102) for use in a centrifuge, comprising: a rotor body (210) including an axis of rotation; and a plurality of balancing apertures (432) arranged circumferentially about the axis of rotation, the balancing apertures (432) being configured to selectively receive weights (433), wherein the balancing apertures (432) are comprised in a lid (212). 432.SELECTED DRAWING: Figure 5

The invention relates to the technical field of inertia rings, and discloses a high-precision inertia ring and a circumferential mass compensation forming process thereof.The high-precision inertia ring comprises a plurality of arc-shaped cylinders, the multiple arc-shaped cylinders are sequentially connected end to end to form the inertia ring of a closed annular structure, every two adjacent arc-shaped cylinders are fixedly connected through a welding seam at the splicing position, and a containing groove is formed in the splicing position; the containing groove is filled with a balance weight piece, and the balance weight piece is used for correcting the uniformity of mass distribution in the circumferential direction of the inertia ring. According to the high-precision inertia ring and the circumferential mass compensation forming process thereof, the accommodating groove at the splicing part is filled with the counterweight piece capable of compensating the mass deviation, so that the circumferential mass of the inertia ring is accurately adjusted; the technical problem of uneven circumferential mass distribution caused by factors such as welding process fluctuation, uneven solder filling and operation difference of an existing inertia ring formed through stamping and welding is solved from the structural level, and the dynamic balance precision and the operation stability of the inertia ring during high-speed rotation are remarkably improved.

A counterweight composition with outstanding chemical resistance and a counterweight comprising this composition, containing polar rubber, an activator, and metal particles in predetermined amounts. The counterweight incorporating this composition exhibits outstanding chemical resistance due to the inclusion of polar rubber, is able to prevent heavy metal pollution and suppress rust formation, displays excellent adhesion to the curved surface of a wheel as well as high extrudability and flexural strength, and is able to inhibit interfacial delamination and lifting phenomena.

A balancing weight composition with excellent chemical resistance and a balancing weight including the same, in which polar rubber, an activator, and metal particles are contained in predetermined amounts. The balancing weight using the balancing weight composition has excellent chemical resistance by including polar rubber, is capable of preventing environmental pollution due to heavy metals and suppressing rust generation, has excellent adhesion to the curved surface of a wheel and high extrudability and bending resistance, and is capable of inhibiting interfacial peeling and lifting phenomena.

A washing machine including a cabinet; a tub arrangeable inside the cabinet; a drum rotatable inside the tub; a motor configured to generate power to rotate the drum; a ball balancer arrangeable in the drum; a damper to support the tub and configured to have a damping force that is changeable; and at least one processor that controls the rotation speed of the motor and the damper force of the damper. As the drum is rotated by the motor according to the rotation speed of the motor controlled by the at least one processor, the at least one processor performs balancing of the ball balancer by controlling the damper force of the damper such that the damper has a smaller damper force in a last resonance section than that in a previous resonance section from among the plurality of resonance sections.

The utility model belongs to the technical field of balance weight wheels, and discloses an adjustable balance weight wheel bidirectional guide block structure which comprises a balance weight wheel, a shaft rod and a guide assembly, a center hole is formed in the center of the balance weight wheel, the shaft rod penetrates through the center hole, locking assemblies are arranged on the front side and the rear side of the balance weight wheel, the locking assemblies are movably connected with the shaft rod, and the shaft rod penetrates through the guide assembly. Through the structures such as the guide blocks and the balls, the balance weight wheel can stably move along the shaft rod, abrasion between the balance weight wheel and the shaft rod is reduced, the influence on the stability of the balance weight wheel is avoided, the balance weight wheel is fixed to the shaft rod through the double positioning and locking structures, the balance weight wheel is prevented from deviating and shaking relative to the shaft rod, and the service life of the balance weight wheel is prolonged. And the stability of the counterweight wheel during movement can be improved, lubricating oil can be stored and conveyed to the concave hole, so that structures such as the ball and the guide block can be lubricated, the friction between the counterweight wheel and the shaft rod is reduced, and the abrasion is further reduced.

A rotor module (70) comprises: a blade cluster (73) of a plurality of blades (72) secured to a rotor disk (74) of the rotor module (70); and counter weights (76) secured to the rotor disk (74). The counter weights (76) cause a center of gravity of the plurality of blades (72) to be zeroed out with respect to an axis (O) of the rotor disk (74). The counter weights (76) cause a moment of inertia (Jx) about an X axis of the rotor disk (74) to be equal to a moment of inertia (Jy) about a Y axis of the rotor disk (74) when the rotor module (70) is rotated about the axis (O). A method for zeroing out a center of gravity of a plurality of blades (72) with respect to an axis (O) of a rotor disk (74) the plurality of blades (72) are secured to is also provided.

A material comprising a thermoplastic polyurethane polyester elastomer and a metal particulate matter having an interface modifier coating. The composite material can be extruded and it is ascertained that the production will proceed smoothly. The composite material may be made into a variety of cross-sectional shapes. One embodiment is a flexible bonded wheel counterbalance that can be used to rotationally balance a vehicle wheel.

A valve arrangement (100) of a vibration damper (200) is provided, the valve arrangement (100) comprising a tube (201) with an interior space (202) for receiving the valve arrangement (100), the valve arrangement (100) having a main piston (6) fixed to a piston rod (1) and dividing the interior space (202) of the tube (201) into a compression chamber (39) and a rebound chamber (40), and the valve arrangement (100) comprising a first pressure control unit (16) for the rebound stage for changing the pressure in a pilot chamber (38) for the rebound stage and a second pressure control unit (15) for the compression stage for changing the pressure in a pilot chamber (39) for the compression stage, the pressure control units (15, 16) each being configured for a flow of damping fluid and the respective pressure control unit (15, 16) for influencing the pressure drop in the respective pilot chamber (38,39) is arranged and the valve arrangement (100) has a disk-shaped body (12) which has at least one flow channel (43, 44) for the damping fluid, characterized in that the first (16) and second (15) pressure control unit is arranged for independent change of rebound damping and compression damping of the vibration damper (200) by separately influencing the pressure drop in the respective pilot chamber by means of a respective valve disk (26) and the first (16) and second (15) pressure control unit is arranged for arrangement within the interior (202) of the tube (201) of the vibration damper (200).

The invention provides a balancing weight for a wind power blade and a balancing method, the balancing weight is composed of quartz sand particles and epoxy resin, the quartz sand particles and the epoxy resin are evenly mixed according to the needed proportion, the mixture is poured into a mold for preparing the balancing weight, and the needed balancing weight is obtained after heating curing forming; one side of the balancing weight is attached to the blade shell, the other side of the balancing weight is laid with the biaxial fabric in a shape-following mode, and the outer side edge of the biaxial fabric is connected with the blade shell. The balancing weight is used for achieving the attaching tightness between the balancing weight and the blade shell; according to the balancing weight for the wind power blade and the weight balancing method, through the arrangement of the balancing weight, the structure and the material of the balancing weight can be effectively optimized, the layering phenomenon of the balancing weight and the possibility that the balancing weight is damaged by lightning stroke are avoided, and the use safety and stability of the balancing weight are improved; through the arrangement of the method, the manufacturing method of the balancing weight can be simplified, and the labor cost is reduced.

One aspect of the invention relates to a mobile ring (120) for a turbomachine, comprising an upstream flange (200), a downstream flange (180) and a radial fastening flange (170), wherein: - the upstream flange (200) and downstream flange (180) each extend along a longitudinal axis (XX'); - the upstream flange (200) and downstream flange (180) are each extended by a radial arm, respectively an upstream radial arm (240) and a downstream radial arm (230) which extend towards the outside of the mobile ring (120), perpendicularly to the longitudinal axis (XX'); - the radial fastening flange (170) extends towards the inside of the mobile ring (120), perpendicularly to the longitudinal axis (XX'); and characterized in that the radial flange (170) has an edge face (300) equipped with at least one weight (400).

This invention discloses a rotary compressor and a refrigeration device. The rotary compressor includes a crankshaft and a rotor assembly. The crankshaft has a first eccentric portion to an Nth eccentric portion arranged sequentially at intervals along the axial direction of the crankshaft, where N is an odd number greater than or equal to 3. The mass of the first eccentric portion is less than the mass of the Nth eccentric portion. The rotor assembly includes a rotor body, a first balance block, and a second balance block. Both the first and second balance blocks are symmetrically arranged about a reference plane passing through the axis of the crankshaft, and the centers of mass of both the first and second balance blocks are located on the reference plane. On the cross-section of the crankshaft, the orthographic projection of the axis of the crankshaft is O, the orthographic projection of the center of mass of the second balance block is A, and the orthographic projection of the axis of the (N+1) / 2th eccentric portion is C, where 75°≤∠AOC≤80°. This effectively reduces the unbalanced inertial force of the rotating components and improves the vibration and noise of the rotary compressor.

The invention discloses a multi-sensor integrated intelligent gear. The multi-sensor integrated intelligent gear comprises a gear body, a PCB integrated with a plurality of functional modules and a sealing cover plate. According to the multi-sensor integrated intelligent gear, the sensing function, the wireless communication function and the gear body are integrated, real-time sensing, wireless transmission, display and storage of stress, acceleration, temperature and noise information in the working state of the gear are achieved, and an intelligent gear part is achieved. According to the multi-sensor integrated intelligent gear, a groove is formed in the end face of a gear body or a radial plate, an annular or fan-shaped PCB designed according to the sizes of different gears is embedded into the groove, and the annular or fan-shaped PCB is fixed through screws or bonding and sealed through a sealing cover plate, so that the sensing function, the wireless communication function and the gear are integrated. The multi-sensor integrated intelligent gear has real-time sensing and wireless communication functions, does not need additional sensors and communication devices, is compact in structure and high in integration level, considers dynamic balance and realizes intellectualization of gear parts.

The application discloses a damper, a power assembly and a vehicle, and relates to the technical field of dampers, and comprises a mass disc, a centrifugal pendulum assembly and a damping elastic element. The mass disc is suitable for being connected with an engine, and the mass disc has a first rotating part. The centrifugal pendulum assembly comprises a flange and a first centrifugal block. The flange has a second rotating part, and the mass disc drives the flange to rotate by pushing the second rotating part through the first rotating part when the mass disc rotates. The first centrifugal block is slidably installed on the flange in the rotating direction of the flange. The damping elastic element is located between the first rotating part and the second rotating part, and the damping elastic element transmits the driving power for rotating the flange by being compressed by the first rotating part and the second rotating part. A torque limiting assembly is suitable for being connected with a gearbox, and the torque limiting assembly is in contact with the flange. The torque limiting assembly limits the maximum torque transmitted to the gearbox by the friction between the torque limiting assembly and the flange. The damper according to the embodiment of the application not only has the function of limiting torque, but also has the advantages of good damping effect, smooth torque transmission and the like.

An apparatus configured to be removably attached to a tire / hub assembly of a vehicle via lug nuts of the tire / hub assembly is used to determine imbalance forces of the tire / hub assembly during motion of the vehicle. The apparatus includes a disk and a plurality of cup-shaped objects fixed at one end to the disk and extending perpendicularly outward from the disk. The plurality of cup-shaped objects are arranged a fixed radial distance from a radial center of the disk in a pattern that matches the lug nuts of the tire / hub assembly. The apparatus is mounted to the vehicle's tire / hub assembly by fitting the plurality of cup-shaped objects over the lug nuts of the tire / hub assembly. The apparatus further includes one or more inertial measurement units (IMU's) mounted to the disk to measure parameters that are used for calculating the imbalance forces during motion of the vehicle.

The application discloses a skill type high-speed motor traction device, and relates to the technical field of elevators, comprising a traction base, wherein a sound-damping and buffering assembly is installed on the top of the traction base, and the sound-damping and buffering assembly is used for reducing vibration and noise generated when the traction device operates; the sound-damping and buffering assembly comprises a spring damper, a magnetorheological fluid damping interlayer, an elastic supporting pad, a rubber vibration isolation pad, a metal sheet, a sound-absorbing cotton layer, a polyurethane foam composite buffer layer and a buffer rubber block; the polyurethane foam composite buffer layer is of a porous structure, is manufactured by using a 3D printing technology, and is made of polyurethane foam, nanoscale carbon fibers and nanoceramic particles; by arranging the sound-damping and buffering assembly, the vibration and noise reduction effect of multiple dimensions and full frequency bands is achieved, the problems of large vibration and noise of the traditional traction device, the unsuitable setting of office areas or living spaces around the elevator machine room, the limited utilization of building space, and the fatigue damage of elevator components caused by long-term vibration and noise can be solved.

The invention relates to a machine tool (10), specifically a hand-held machine tool or semi-stationary machine tool, having a drivetrain (108), which comprises: a tool shaft (23) mounted rotatably on a drive carrier (80) by means of a bearing assembly (27); and a tool receptacle (35), arranged on the tool shaft (23), for an in particular plate-like working tool (40). The tool shaft (23) is rotatably driveable about a rotational axis by a drive motor of the machine tool, and a balancing device (50) is arranged on the tool shaft (23) which comprises a guide body (51) having at least one orbital path (52) extending around the rotational axis and at least one balancing body (54, 55) movably mounted in the orbital path (52). In this machine tool, according to the invention, the at least one orbital path (52) arranged on the guide body (51) comprises a first orbital path (52), which is at a first radial distance from the rotational axis, and at least a second orbital path (53), which is longitudinally spaced apart from the first orbital path (52) with respect to the rotational axis and is at a second radial distance from the rotational axis, which second distance is greater than the first radial distance, and is separate from the first orbital path (52) such that the balancing bodies (54, 55) arranged in each orbital path (52, 53) are held between the orbital paths (52, 53) so as to be non-adjustable and / or in a cage-like manner in the relevant orbital path (52, 53) thereof.

The utility model discloses a balancing piece fixing structure, which relates to the field of dynamic balance of transmission shafts, and comprises an inter-bridge transmission shaft and a ferrule sleeved on the inter-bridge transmission shaft, the inter-bridge transmission shaft comprises a spline shaft yoke, one end of the spline shaft yoke is matched with a spline sleeve through a spline and then is welded with a sealing sleeve, and the other end of the spline shaft yoke is welded with the sealing sleeve. The other end of the spline shaft fork is connected with a flange fork through a cross shaft; the spline housing is welded and fixed with a welding fork, and the welding fork is connected with the other flange fork through a cross shaft; the ferrule is arranged on the outer wall of the spline housing in a sleeving mode, and a balance piece is arranged at the position, with the unbalance amount, of the ferrule in a projection welding mode. The weight compensation function of the balance piece is not affected, the residual unbalance amount of the transmission shaft reaches the qualified range, the problem of projection welding spot cracks of the balance piece is solved, and welding cracks are eliminated at the welding spot positions after projection welding of the balance piece.

A wheel balancing system having an air supply system including a retractable air hose carried within a pivoting support arm adjacent to a pivoting hood assembly for partially enclosing a wheel assembly mounted to a rotationally driven spindle. The retractable air hose couples a source of pressurized air to an air chuck configured for attachment to a wheel assembly inflation valve. A retraction mechanism contained within the pivoting support arm enables the air chuck and air hose to be drawn from the pivoting support arm during use, and to be automatically retracted to a stowed positioned within the support arm when not in use.

The application discloses a dynamic balance weight-removing mechanism and relates to the technical field of dynamic balance weight-removing. The dynamic balance weight-removing mechanism comprises a base, a bearing assembly, a weight-removing assembly and a clamping assembly, the clamping assembly comprises a clamping seat, a first driving module, a clamping plate and a second driving module, the second driving module comprises a module body and a driving part, the module body is hinged to the clamping seat, and the driving part is hinged to the clamping plate. The clamping plate on the dynamic balance weight-removing mechanism can be driven by the first driving module and the second driving module to be close to the bearing assembly and clamped on the rotary workpiece, so that displacement of the rotary workpiece is prevented during the weight-removing process. Meanwhile, the module body is hinged to the clamping seat, and the driving part is hinged to the clamping plate, so that the clamping plate has a larger activity allowance during rotation, and the clamping effect of the clamping plate is effectively improved.

A counterweight crimping device crimps a counterweight, which is adhered to the inner peripheral surface of a wheel, to the inner peripheral surface of the wheel. The counterweight crimping device includes: a pressing member having a pressing surface for pressing the counterweight against the inner circumferential surface of the wheel in a state where the counterweight is sandwiched between the pressing member and the inner circumferential surface of the wheel; a pressing force sensor that detects the pressing force of the pressing surface pressing the balance weight during the pressing of the balance weight by the pressing member; a driving unit that drives the pressing member; and a control device that controls the drive unit. The control device drives the drive unit on the basis of the detection of the pressing force by the pressing force sensor, presses the balance weight against the inner peripheral surface of the wheel by the pressing surface, and crimps the balance weight against the inner peripheral surface of the wheel.

It is intended to enable inhibition of damage or breakage of respective portions without impairing drivability even when large-amplitude torsional vibration is inputted in a positive-side torsional region. The present damper device includes a large hysteresis mechanism (50), generating a large hysteresis torque, and a hysteresis inhibiting mechanism (60). In a positive-side torsional region, when relative rotation is performed until reaching a maximum torsion angle from a neutral position, the hysteresis inhibiting mechanism (60) deactivates the large hysteresis mechanism (50) until the relative rotation reaches a first torsion angle from the neutral position, but activates the large hysteresis mechanism (50) until the relative rotation reaches the maximum torsion angle from the first torsion angle; and when the relative rotation is performed until reaching the neutral position from the maximum torsion angle, the hysteresis inhibiting mechanism (60) deactivates the large hysteresis mechanism (50) until the relative rotation reaches a second torsion angle less than the first torsion angle from the maximum torsion angle, but activates the large hysteresis mechanism (50) until the relative rotation reaches the neutral position from the second torsion angle.

The invention provides a solid-liquid two-phase counterweight method of a wind power blade and the wind power blade. The method comprises the following steps: firstly, determining the mounting position of a counterweight box on a blade according to design parameters of the blade; the design parameters comprise modal frequency and modal shape; based on the liquid shaking frequency and the size of the liquid cavity, liquid balance weight parameters in the liquid cavity are determined, and the liquid shaking frequency is consistent with the modal frequency; based on the fan rotation balance principle and the liquid balance weight parameters, the total balance weight and the solid mass of each blade are determined; and determining the structural size of the counterweight box and the counterweight of the counterweight box based on the liquid counterweight parameter and the solid mass. In this way, vibration energy is dissipated through resonance of the liquid shaking frequency and the blade modal frequency, meanwhile, dynamic balance adjustment of the blade is achieved through combination of the liquid balance weight and the solid balance weight, and the overall vibration reduction performance and operation reliability of the blade are improved.

The invention discloses a weight balancing method of a wind power blade, the wind power blade and a wind generating set, the weight balancing method of the wind power blade comprises the steps that a flexible weight balancing prefabricated part is provided, the flexible weight balancing prefabricated part comprises a flexible body and at least two reinforcing layers, and the at least two reinforcing layers are stacked in the thickness direction of the flexible weight balancing prefabricated part at intervals; the reinforcing layer is embedded in the flexible main body; obtaining to-be-weighted information of the wind power blade; according to the weight parameter, the flexible counterweight prefabricated part is cut in the thickness direction of the flexible counterweight prefabricated part, so that the flexible counterweight part with the weight as the weight parameter is obtained; obtaining a to-be-weighted surface on the wind power blade according to the to-be-weighted position information; and the flexible counterweight part is connected to the to-be-counterweighted surface in the posture that at least two reinforcing layers of the flexible counterweight part are arranged in the direction from the flexible counterweight part to the to-be-counterweighted surface. According to the embodiment of the invention, the stress concentration of the connecting part of the counterweight piece and the wind power blade can be reduced, the connecting part is prevented from being damaged, and the risk that the counterweight piece falls off is reduced.