69results about "Asynchronous induction clutches/brakes" patented technology

The application provides a permanent magnet eddy current governor for constant torque load heavy load starting and a control method thereof, and belongs to the technical field of permanent magnet eddy current transmission speed regulation. The permanent magnet eddy current governor comprises a conductor cylinder, a magnet disc, a transmission shaft and a magnet disc axial traction mechanism. The conductor cylinder is connected with a motor input shaft, the inner wall of the conductor cylinder is fixed with two groups of annular conductor sleeves, the annular conductor sleeves are divided into starting zones and rated working zones in the axial direction, and the two groups of starting zones are separated by an idle zone. The transmission shaft passes through the rear end of the conductor cylinder, the front end is located in the conductor cylinder, and the rear end is connected with a load output shaft. The magnet disc is installed on the shaft rod of the transmission shaft located in the conductor cylinder, and the outer ring surface of the magnet disc is uniformly distributed with permanent magnets. The magnet disc axial traction mechanism is used for driving two magnet discs to synchronously approach or move away from the center of the idle zone. The application can be used for motor idle starting, heavy load controllable starting, load balancing, speed regulation operation and unloading overload protection of constant torque load.

A brake assembly is suitable for use in conjunction with a wheel having a rim rotatably mounted to an axle. The brake assembly includes a rotor configured to rotate about the axis with the rim. The rotor has a first frustoconical rotor surface and either a conductive element or a magnet. The brake assembly further includes a stator fixed in rotation about the axis and configured for selective translation parallel to the axis. The stator has a first frustoconical stator surface proximate to the first frustoconical rotor surface and a conductive element, when the stator has a magnet, or a magnet, when the stator has a conductive element.

The invention discloses a cylindrical magnetic wheel speed regulator based on a high-strength magnetic circuit arrangement structure, which comprises a first bearing body and a second bearing body, the first bearing body and the second bearing body are respectively connected with a transmission shaft rod, a plurality of groups of carrier layers are concentrically distributed on the first bearing body, and two adjacent groups of carrier layers form an accommodating gap. A plurality of groups of carrier layers are concentrically distributed on the first bearing body, at least one of a permanent magnet layer and a conductor layer is arranged on each group of carrier layers, a plurality of groups of supporting body layers are concentrically distributed on the second bearing body, at least one of a permanent magnet layer and a conductor layer is arranged on each group of supporting body layers, and each group of supporting body layers can be connected into one group of containing gaps, so that magnetic field lines generated by the permanent magnet layers penetrate through the conductor layers; compared with an existing N-pole and S-pole alternate arrangement mode, the permanent magnet speed regulator has the advantages that the magnetic field can be effectively increased, the torque transmission effect can be effectively improved, the service power of the permanent magnet speed regulator is increased, the size of the permanent magnet speed regulator is reduced, the occupied space is reduced, and the installation difficulty is reduced.

The application relates to the technical field of electromagnetic damping, and provides a novel eddy current electromagnetic damper which comprises a cylindrical shell conductor plate (formed by embedding a conductive plate and a magnetic conductive plate), a ring-shaped Halbach permanent magnet array (as a mover), two strip-shaped permanent magnets, a central shaft and an end cover. When the damper is impacted, the mover and the stator move relatively, the conductive plate generates an eddy current, and an eddy current resistance is formed. Meanwhile, repulsion between N poles between the two strip-shaped permanent magnets and the ring-shaped Halbach permanent magnet array generates repulsion force, pushes the ring-shaped Halbach permanent magnet array back to the middle position, and makes the damper reset rapidly. The damper has the advantages of simple structure, low cost and high reliability, and is suitable for large-scale popularization and application.

The application provides a low eddy current preloading structure for a magnetic preloading system and relates to the technical field of precision motion platforms. A preloading body is arranged opposite a magnet, and the preloading body and the magnet have relative movement during work. The preloading body is formed by alternately stacking a plurality of magnetic conductive layers and a plurality of insulating layers, and is used for segmenting and limiting an eddy current loop induced by the relative movement, so that the magnetic damping force of the preloading body in the relative movement direction is reduced without significantly reducing the magnetic preloading force. According to the technical scheme, the structure of the preloading body is designed, and the insulating layer effectively limits the expansion of the eddy current in the direction, so that the large-scale eddy current which may originally penetrate the whole body is segmented and limited in a single magnetic conductive layer or a local area thereof, that is, the eddy current path in the preloading body is blocked or separated by a physical method, so that the magnetic damping force caused by the eddy current is greatly reduced under the premise of maintaining the magnetic preloading force, and finally the dynamic performance and the static stiffness of the air floating motion platform are simultaneously improved.

The invention relates to a braking device (200) for generating a total braking torque for a vehicle (42), comprising: an eddy current braking device (10), an energy storage device (24), and an electric machine (46, 48) connected to the energy storage device (24). The eddy current braking device (10) has a stator part (12), a rotor part (16) rotatably arranged relative to the stator part (12) about an axis of rotation (14) with a shaft (18) arranged in the axis of rotation (14), and an actuator device (10, 28, 32). The rotor part and stator part are arranged concentrically to each other with an air gap (20) between them. The stator part (12) includes an excitation device (22) for generating a primary magnetic field.An induction device is designed to induce eddy currents by a magnetic field, thereby generating a first braking torque (120, 122), wherein the actuator device (10, 28, 32) generates a force (30, 34) by means of which the rotor part (16) and stator part (12) are displaced relative to each other, thereby generating contact between the stator part (12) and rotor part (16) and generating a second braking torque (120, 122). The eddy current braking device (10) and / or the electric machine (46, 48) are coupled, at least temporarily, to at least one wheel (44) of the vehicle (42). The invention further relates to a vehicle with such a braking device and to a method for generating a total braking torque.

In some embodiments, two or more different types of stator structures may be disposed within the gap of an axial flux machine. Such an arrangement may be advantageous to produce a machine optimized for multiple modes of operation, such as, for example, generation of mechanical torque, conversion of mechanical torque to electrical power, and / or dissipation of mechanical power. Additionally, in some embodiments, an axial flux machine may include a planar stator having windings arranged to be positioned within an active area of ​​the machine, and may further include at least one switch configured to be selectively closed to establish an electrical connection between individual ends of the windings at times when the windings are not coupled to an external power source.

The invention relates to an electric machine (10), in particular an eddy current brake (40). This comprises a stator (12) and a rotor (18), wherein a number of excitation coils (14) are mounted on pole shoes (22) along a circumference of the stator (12). In the electric machine (10), the stator (12) has a stator ring (16) on which, viewed in the circumferential direction (56), every second pole shoe (22) is provided with an excitation coil (14). Furthermore, the invention relates to the use of the electric machine (10) as an eddy current brake in vehicles.

The brake device (1) provided for a railway vehicle comprises at least one wheelset (99) having a wheelset axle (98), along which a wheelset axis (y) extends coaxially, and the brake device (1) comprises wheels (9, 9', 9'') directly or indirectly connected to the wheelset axle (98) and rotatable about a wheel axis (x), and comprises eddy current rotors (22A; 22B) connected to the wheels (9, 9', 9''), and the eddy current rotors (22A; 22B) and at least one friction brake (3; 3A, 3B) having a friction rotor (32; 32A, 32B; 92) connected to or integrated in the wheels (9, 9', 9'') and having a friction stator (31; 31A, 31B) displaceable relative to the friction rotor (32; 32A, 32B; 92). - the eddy current brake (2A; 2B) and the friction brake (3; 3A, 3B) can be sequentially actuated by a single actuation device (7) and drive device (8), said drive device (8) being connected to the actuation device (7) and controllable by a control unit (10); the eddy current rotor (22A; 22B) is designed as one piece or segmented, has a disk or ring shape, is aligned coaxially with the wheel axis (x) and is connected to one side of the wheel (9, 9', 9'') or is integrated into the wheel (9, 9', 9''); at least one eddy-current stator (21A; 21B) is designed as one piece or segmented and is displaceable in the direction of the wheel axis (x) in front of the eddy-current rotor (22A; 22B) or tiltable segment-by-segment relative to the eddy-current rotor (22A; 22B); - the wheels (9, 9', 9'') have a wheel rim (92) acting as a friction rotor (32) with a front surface (921) directed radially outward with respect to the wheel axis (x) acting as a braking surface, and the friction stator (31) is displaceable with respect to the front surface (921).

The invention relates to the technical field of mechanical transmission parts, and discloses a dual-bearing-supported modular permanent magnet coupler. The dual-bearing-supported modular permanent magnet coupler comprises an input side hub, a bearing a, a conductor disc assembly b, a magnet disc assembly c and an elastic coupler, wherein the elastic coupler and the input side hub are symmetrically distributed; the outer wall of the side, close to the elastic coupler, of the input side hub is provided with a conductor disc assembly b, the conductor disc assembly b is composed of a radiator, an input side steel disc and a copper disc, the input side steel disc and the input side hub are connected and installed through bolts, the radiator is installed on the input side steel disc, the copper disc is installed on the input side steel disc, and the radiator is installed on the input side steel disc. The steel disc is tightly attached to the radiator, and the grooving direction of the radiator is the rotary tangential direction. The device is simple in structure, low in manufacturing cost and convenient to install.

The invention relates to an electrodynamic brake apparatus (10) that has an induction device (12), the induction device (12) having a conductor device (16) and a magnetic flux device (14) that is configured to provide a magnetic field. The magnetic flux device (14) and the conductor device (16) are coupled such that electrical currents can be induced in the conductor device (16). The conductor device (16) is assigned at least one magnetic-flux-conducting element (50') for conducting a magnetic flux, the at least one magnetic-flux-conducting element (50') consisting of a magnetically conductive material or comprising a magnetically conductive material. For this improved electrodynamic brake apparatus, the conductor device (16) additionally comprises a porous structure (34) that consists of or comprises a metallic, electrically conductive material.

A drive device (100, 100') for a wheel (10) mounted for rotation on an axle (5), comprising: a motor (110) intended to be fixed relative to the axle; a guide rotor (120, 120') driven in rotation by the motor; and a follower rotor (140, 140', 140'') intended to be rotationally fixed to the wheel, the guide rotor and the follower rotor being arranged to form a magnetic coupling. (Figure from the abbreviation: Fig. 2A)

A brake for a motor includes a fixed-side engaging plate fixed to a motor shaft; a movable-side engaging plate coaxially opposed to the fixed-side engaging plate along the direction of a center axis; and a self-holding type solenoid that moves, in the direction of the center axis, the movable-side engaging plate to a halt cancelation position separated from the fixed-side engaging plate and a halt position where engagement with the fixed-side engaging plate occurs. When the motor is halted, the solenoid is driven to move the movable-side engaging plate from the halt cancelation position to the halt position. The movable-side engaging plate which has reached the halt position is mechanically engaged with the fixed-side engaging plate, and the motor shaft is forcibly halted.

The invention relates to the technical field of permanent magnet coupling transmission, and discloses a permanent magnet speed regulator, a control method thereof and a power system. A first rotor connected to the mechanical input; the second rotor is connected with the mechanical output, and the first rotor and the second rotor are coaxial and rotationally connected; the first electromagnetic module comprises a first armature assembly and a first magnetic field assembly; the second electromagnetic module comprises a second armature assembly and a second magnetic field assembly; and the rotary converter is arranged on the first rotor and electrically connected with the first armature assembly and the second armature assembly, and the rotary converter is configured to control current flowing through the first armature assembly and the second armature assembly so as to adjust the rotating speed of the second rotor. According to the invention, the first electromagnetic module and the second electromagnetic module are integrated on the base and the rotor, and the current is controlled by using the rotary converter, so that the output rotating speed is accurately controlled, constant-power transmission is supported, and the energy utilization efficiency is effectively improved.

The utility model discloses a magnetic eddy current brake device. The magnetic eddy current brake device comprises a brake caliper; the brake structures are respectively and movably embedded in the brake calipers and are positioned at the central part; the utility model relates to the field of brake devices, in particular to a brake device, which comprises a brake caliper, a main shaft, a pair of pistons, a brake disc and a pair of sensing metal rings with the same structure, and is characterized in that the brake caliper is fixed on a vehicle body, the brake disc is fixed on the main shaft, and the device is fixed; before the brake pad makes contact with the brake disc, the magnetic block and the induction metal ring continuously approach to generate a magnetic eddy current effect and generate a speed reduction effect on the main shaft, and as the magnetic block and the induction metal ring decelerate the main shaft before the brake pad makes contact with the brake disc, the brake pad can brake the brake disc more easily, abrasion of the brake pad is effectively reduced, and the service life of the brake pad is prolonged. Through the structure, the brake performance of the device is improved, and the loss of the brake pad is greatly reduced.

The application relates to the technical field of motor equipment, in particular to an explosion-proof permanent magnet motor with a magnetic eddy current and friction composite braking device. The explosion-proof permanent magnet motor with the magnetic eddy current and friction composite braking device comprises a shell, a driving shaft and two braking mechanisms. The driving shaft is provided with a brake disc. Each braking mechanism comprises a rotating disc and a plurality of friction rods. The friction rods are intermittently switched between contact braking with the brake disc and contact heat dissipation with the shell, so that the heat of the brake disc can be timely conducted to the shell. Moreover, the friction rods rotate during sliding on the track, so as to change the position of the friction rods that are worn, thereby continuously changing the contact area of the friction rods with the brake disc and making the wear distribution more uniform. The application provides the explosion-proof permanent magnet motor with the magnetic eddy current and friction composite braking device, so as to solve the problems that, in the existing permanent magnet motor, a large amount of heat is generated by a friction ring during braking, the heat cannot be timely discharged, and the wear of a friction plate is uneven.

The invention relates to a braking device comprising an armature, coils (7) received in slots (5) of the armature, and wedges (1) engaged in the slots (5) to at least partially close off the slots (5), each of the wedges (1) being composed of at least one material with permanent magnetization in a polarization direction. The invention also relates to an aircraft wheel (103) comprising such a braking device.

The invention relates to a braking device (10), in particular an eddy current braking device (12), comprising at least a rotor part (14) rotatably arranged about an axis of rotation (16), with a shaft (20) arranged in the axis of rotation (12), a stator part (18), an actuator assembly (26), wherein the stator part (18) has at least one brake shoe (24), wherein the stator part (18) comprises an excitation device (28) with at least one excitation coil (30) with windings (32), which is configured to generate a primary magnetic field, wherein at least one recess (36), in particular a groove (36), is arranged in the brake shoe (24), in which at least a part of the excitation coil (30) with windings (32) is arranged, wherein the primary magnetic field passes through both the stator part (18) with the brake shoe (24) and the rotor part (14), so that when the rotor part rotates (14) Eddy currents are generated.Furthermore, the invention relates to a vehicle (130) with a braking device (10), and to the use of a braking device (10) in a vehicle (130).

The utility model relates to motor speed regulation energy -conserving technical field discloses a kind of non-supporting type magnetic eddy current flexible non-contact transmission speed regulation device, including limiting bottom, the top left side of the limiting bottom is fixedly connected with DC motor, the output end of the DC motor is fixedly connected with connecting bearing, the right end of the connecting bearing is fixedly connected with conductor rotor, the top right side of the limiting bottom is fixedly connected with fan shell, the left side of the fan shell is fixedly connected with shaft sleeve, the front and back sides of the shaft sleeve are all fixedly connected with electric actuator, the inner wall of the shaft sleeve is provided with clamping strip cylinder.In the utility model, the magnetic field of permanent magnet rotor is rotated and cut by conductor rotor, and then permanent magnet rotor is synchronously rotated by driving, electric actuator pushes hollow ring axial movement, so that hollow ring drives permanent magnet rotor to move, changes the meshing area with conductor rotor, realizes the continuous, stepless regulation of load equipment output speed and torque.

A vehicle braked wheel (103) comprising at least one hub portion (104.1) and a rim portion (105.1) coaxial with the hub portion (104.1) and connected to the hub portion (104) by a disc portion (106.1), the wheel having an eddy current magnetic braking device comprising a rotor (3) rotationally linked to the wheel and a stator (2) that is rotationally free relative to the rim portion (105.1) and the rotor (3) and that carries a plurality of magnets (11) capable of emitting a magnetic flux generating eddy currents in the rotor (3), made of an electrically conductive material, when the stator (2) and the rotor (3) are facing each other and in relative motion. The rotor (3) is integral with the rim portion (105.1). Landing gear and aircraft comprising such a wheel. FIGURE FROM THE ABRIDGED: Fig. 3

The invention relates to a brake for braking a shaft and to a brake motor comprising a brake having a magnet and an energizable winding, the magnet having an inner pole and an outer pole, the outer pole being hollow-cylindrical, and the winding being wound around the inner pole.

In a truck chassis with a backbone-like support tube (1, 12) and an electromagnetic retarder (2) comprising a drive train with a motor (3) and transmission (4) mounted on a frame (10), wherein further elements of the drive train, in particular an auxiliary transmission (5) or an auxiliary drive (11), are arranged between the transmission (4) and the axles, the electromagnetic retarder (2) being attached to the support tube (1, 12) via a cross member (13) whose shape is adapted to the shape of the support tube (1, 12). Alternatively, the electromagnetic retarder (2) is attached to the frame (10) by means of a bolted connection with silent blocks (9) via brackets (7, 8).

The present invention relates in particular to an induction device (300) for an electrodynamic brake (100), wherein at least one support element (400) has a plurality of openings (402), and a plurality of pins (410) are divided into a plurality of pin clusters (416), with one pin cluster (416) positioned in each opening (402). The present invention further relates to the electrodynamic brake (100).

A braking device includes one or more stationary elements and one movable element that is movable with respect to the one or more stationary elements, the moveable element being made of an electrically conductive material, one or the one or more stationary elements including magnets capable of generating eddy currents in the movable element, when the one or more stationary elements and the movable element are in relative movement. The magnets include first magnets and second magnets disposed alternating, the first magnets having a first magnetization vector and each of the second magnets having a second magnetization vector, and the magnets have widths such that the first magnets are spaced apart in pairs by a first distance that is less than a second distance separating the second magnets in pairs, and the length of the second magnets being around 70% of the length of the first magnets.

An eddy current retarder (100) includes a braking member (10), permanent magnets (40), and pole pieces (50). Each of the pole pieces (50) includes an inner circumferential surface (51). The inner circumferential surface (51) faces, in a braking state, one of the permanent magnets (40) with a gap in the radial direction of the braking member (10). The inner circumferential surface (51) includes a first region (511) and a second region (512). The first region (511) is separated in the radial direction from the permanent magnet (40) at an increasing distance toward a front end side in the direction (R1) of rotation of the permanent magnet (40) relative to the pole piece (50) when switching from a non-braking state to the braking state in a manner such that the gap between the inner circumferential surface (51) and the permanent magnet (40) is larger on the front end side than at the center (C1). The second region (512) is separated in the radial direction from the permanent magnet (40) at an increasing distance toward a rear end side in the rotation direction (R1) in a manner such that the gap between the inner circumferential surface (51) and the permanent magnet (40) is larger on the rear end side than at the center (C1).

The utility model relates to motor technical field, specifically disclose motor. The motor includes the casing with installation cavity and is located in the rotor module and stator module of installation cavity, and the rotor module includes rotor back iron and the main shaft of the wear interface in rotor back iron, and the rotor module can rotate around the axis of main shaft, and the stator module includes the tubular magnet, the isolation sleeve, the magnetism adjusting ring and motor stator of the sleeve connection in proper order from inside to outside, the tubular magnet includes the several N pole strip permanent magnet and several S pole strip permanent magnet of the circumferential staggered arrangement of around the axis of main shaft, and the one end of isolation sleeve is recessed with the accommodation groove, and the other end coaxially convex has Wang Lianye vein structure, and the magnetism adjusting ring includes the inner connecting bridge, a plurality of magnet conductors and a plurality of non -magnetic body, and all magnet conductors and all non -magnetic body circumferential staggered arrangement around the axis of main shaft, and every two adjacent magnet conductor is connected through the inner connecting bridge in the one end close to main shaft. The motor improves operation reliability and power density through the optimization design to structure.

An eddy current retarder (100) includes a braking member (10), permanent magnets (40), and pole pieces (50). Each of the pole pieces (50) includes an inner circumferential surface (51). The inner circumferential surface (51) faces, in a braking state, one of the permanent magnets (40) with a gap in the radial direction of the braking member (10). The inner circumferential surface (51) includes a first region (511) and a second region (512). The first region (511) is separated in the radial direction from the permanent magnet (40) at an increasing distance toward a front end side in the direction (R1) of rotation of the permanent magnet (40) relative to the pole piece (50) when switching from a non-braking state to the braking state in a manner such that the gap between the inner circumferential surface (51) and the permanent magnet (40) is larger on the front end side than at the center (C1). The second region (512) is separated in the radial direction from the permanent magnet (40) at an increasing distance toward a rear end side in the rotation direction (R1) in a manner such that the gap between the inner circumferential surface (51) and the permanent magnet (40) is larger on the rear end side than at the center (C1).

A linear permanent magnet eddy current deceleration device, including: the gyro wheel, the swing structure is fixedly arranged in one end of gyro wheel, the inductive structure is detachably arranged in the other end of gyro wheel, further including: the guide rail is movably arranged in the lower wall of gyro wheel and is located in the right end of gyro wheel, the utility model relates to permanent magnet eddy current deceleration field, through the gyro wheel rolling process on the guide rail, through the limiting effect of the key, drive swing rod rotation, through the compression nut, the swing rod is tightly pressed, prevent the swing rod from falling off in the process of rotation, in the process of swing rod rotation, drive magnet passes through the inductive metal on part of the vehicle body constantly, produce the turbine effect, reduce the speed of swing rod rotation, and the faster the speed of rotation, the stronger the deceleration effect, through the deceleration of swing rod, to reach the deceleration of gyro wheel, make gyro wheel keep a steady speed operation, realize the deceleration of gyro wheel through the above structure, and greatly reduce the cost.

A damper assembly for a tailgate on a vehicle includes a tailgate and a hinge pin rotatably connecting the tailgate to a vehicle body for pivotal movement between a closed position and an open position. The damper assembly additionally includes a rotor rotatably connected to the hinge pin so as to rotate together with the hinge pin, and a magnet arranged adjacent to the rotor for generating an eddy current to damp rotation of the hinge pin and thereby damp pivotal movement of the tailgate.

The present invention relates to an induction device (300), in particular for an electrodynamic brake (100), in which at least one support element (400) has a plurality of openings (402) and a plurality of pins (410) is divided into multiple pin clusters (416), wherein a pin cluster (416) is arranged in each opening (402). Furthermore, the invention relates to an electrodynamic brake (100).