126results about "Asynchronous induction clutches/brakes" patented technology

Trolley systems and associated rails and tracks may include trolleys having an integrated brake system that can be adapted to slow or stop the trolley based on various control inputs (internal or external). The track system may be formed from either or both of a series of tensioned cables or tracks that are interconnected with transition system and the trolleys, able to transition between track systems. The track system may be fitted with additional braking elements to govern motion of the trolley along a track system. Additionally, the track may be fitted with other elements that provide an external input into the trolley to modify the braking operation of the trolley.

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.

Systems, devices, and methods are described for providing, among other things, an electrodynamic contactless braking system. In an embodiment, the electrodynamic contactless braking system may include plurality of electromagnet assemblies arranged and configured to have alternating magnetic field orientations. In an embodiment, each electromagnet assembly may include an air gap formed between a first electromagnet pole and a second electromagnet pole. In an embodiment, each electromagnet assembly is configured to generate a magnetic field of a character and for a duration sufficient to induce eddy currents on an electrically-conductive element moving within the air gap of each of the plurality of electromagnets. In an embodiment, the electrodynamic contactless braking system may include a controller operatively coupled to each of the plurality of electromagnets, the controller configured operate the plurality of electromagnets in parallel.

The invention relates to a brake device (1) for a rail vehicle, comprising: a wheel set (99), a wheel (9) which can be rotated about a wheel axis (x), an eddy-current brake (2A; 2B) which comprises an eddy-current rotor (22A; 22B) and an eddy-current stator (21A; 21B), and a friction brake (3) which comprises a friction rotor (32) and a friction stator (31), wherein - the eddy-current brake (2A; 2B) and the friction brake (3) can be activated sequentially by a single actuation device (7), - the eddy-current rotor (22A; 22B) has a disc-type design and is connected to one side of the wheel (9) so as to be aligned coaxially to the wheel axis (x), - the eddy-current stator (21A; 21B) can be moved in front of the eddy-current rotor (22A; 22B) in the direction of the wheel axis (x), and - the wheel (9) is provided with a wheel rim (92) that is used as a friction rotor (32) and has an end surface (921) which is oriented radially outwards with respect to the wheel axis (x) and is used as a brake surface and against which the friction stator (31) can be moved.

To describe a device 1 comprising members in a kinematic relationship.SOLUTION: A kinematic relationship is at least partially governed by at least one magnetic induction force that introduces a threshold value of a force. This, in fact, provides a threshold value with respect to a partial movement and a hysteresis degree, and brakes movement until a sufficiently large energizing force E is applied. The effect can be further altered by use of additional magnetic induction force interaction with at least one additional member, and energizes or slows once started movement, and / or brakes the movement when once reached a new location.SELECTED DRAWING: Figure 1

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.

To provide a rotor for an eddy current type reduction gear, excellent in high-temperature strength, and capable of reducing a gap between a cylindrical part of the rotor and a pole piece in constituting the eddy current type reduction gear.SOLUTION: A rotor for an eddy current type reduction gear includes a cylindrical part. The chemical composition of the cylindrical part comprises by mass% C: 0.05-0.15%, Si: 0.10-0.40%, Mn: 0.50-1.00%, P: 0.030% or less, S: 0.030% or less, Cr: over 0.10%-0.40%, Mo: 0.20-1.00%, Nb: 0.020-0.060%, V: 0.040-0.080%, sol.Al: 0.030-0.100%, B: 0.0005-0.0050%, N: 0.003-0.010%, Cu: 0-0.20%, Ni: 0-0.20%, and the balance: Fe and impurities.SELECTED DRAWING: Figure 1

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.

In some embodiments, two or more different types of stator structures may be disposed within a gap of an axial flux machine. Such arrangements may be advantageous, for example, for producing a machine optimized for multiple modes of operation, such as mechanical torque generation, conversion of mechanical torque to electrical power, and / or dissipation of mechanical power. Further, in some embodiments, an axial flux machine may include a planar stator having a winding arranged to be positioned within the machine's active region, and may further include at least one switch configured to be selectively closed to establish an electrical connection between respective ends of the winding at a time that the winding is not coupled to an external power source.

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 discloses a goaf fracture zone double-sleeve drilling coring device and a dynamic adaptation method.The goaf fracture zone double-sleeve drilling coring device is characterized in that a drilling machine connecting base is installed on a connecting sleeve, the connecting sleeve, an extending sleeve and a coring sleeve are of an inner-outer double-sleeve structure, and an outer pipe of the connecting sleeve is connected with an outer pipe of the extending sleeve or an outer pipe of the coring sleeve; a coring drill bit is installed on the coring sleeve, the permanent magnet array is installed on a rotating base of the coring drilling machine, and the sensor module is installed on the coring sleeve. The outer pipe of the coring sleeve rotates to drill rock, and the inner pipe counteracts interference of rotation of the outer pipe through electromagnetic damping force to keep still. By means of the electromagnetic induction technology, failure of traditional mechanical limiting at a high rotating speed is avoided, and stability of a rock core is effectively guaranteed; based on a rock core state, a dynamic adaptation method is provided. The method can be widely applied to rock core collection of complex stratums such as crushed zones and soft coal walls, the rock core breakage rate is greatly reduced, and the coring completeness is improved.

The invention relates to an eddy current brake (10) with a brake element (18) in the form of a brake disc (20) or a brake drum (28) and with an excitation element (32) cooperating with the brake element (18), comprising one or more excitation coils (38, 64, 66, 68, 70). The at least one brake element (18) is stationary in or on a housing (12) of a drive provided with fluid cooling (16) and is cooled by the fluid cooling (16). The at least one excitation element (32) is disc-shaped and designed to rotate relative to the at least one brake element (18). Furthermore, the invention relates to an eddy current brake (10) with an excitation element (32) comprising a permanent magnet (84) or a group (86) of permanent magnets (84).

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.

The present invention discloses a coil-arrangement controllable induced magnetic coupler, primarily composed of a conductive rotor back iron disk, an iron core, winding coils, a permanent magnet rotor back iron disk, an aluminum disk, and magnets. An air gap exists between the conductive rotor and the permanent magnet rotor, allowing relative motion between the two rotors. The winding coils are embedded in the iron core and connected to a computer and speed control device that controls their on / off and connection modes. The arrangement of the winding coils can be altered by fixing them on the back iron disk. This magnetic coupler achieves multi-stage speed regulation by varying the winding coil current, significantly improving the speed-changing capability of the magnetic coupler system and significantly impacting its practical applications.

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.

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

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 present invention proposes a magnetic coupling comprising a first housing, a second housing disposed outside the first housing, a bearing disposed below the second housing and outside the first housing, a shaft housing disposed outside the second housing and the bearing, and a magnet and a hysteresis ring disposed between the second housing and the shaft housing. The magnet is fixed to the outside of the second housing, and the hysteresis ring is fixed to the inside of the shaft housing and corresponds to the magnet. The second housing is also provided with an adjustment member for adjusting the axial position of the second housing on the first housing. The magnetic coupling transmits torque to the shaft housing through the interaction between the magnet mounted on the second housing and the hysteresis ring mounted on the shaft housing, achieving non-contact torque transmission, and the magnitude of the transmitted torque is adjustable.

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).