193results 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.

A moving body and a transport body are decelerated in a deceleration section by a deceleration mechanism. The deceleration mechanism includes a moving body that has moving body magnets and that moves on an air flow path while receiving an air flow, a transport body that has a magnetic material (transport body magnets or a transport body magnetic material repelling or attracting the moving body magnets and that is transported on a transport path in conjunction with the moving body on the basis of a magnetic force acting between the moving body magnets and the magnetic material, and braking means that is arranged in a deceleration section on the air flow path and that decelerates the moving body. The braking means includes an electric conductor in which an eddy current is generated due to movement of the moving body magnets.

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.

An eddy-current mechanism including a rotor rotatable about a rotor axis at least one electrically conductive material coupled to the rotor for rotation therewith, at least one magnet configured to apply a magnetic field extending at least partially orthogonal to the plane of rotation of the conductive member, and characterised in that upon rotation of the rotor, the conductive member is configured to move at least partially radially from the rotor axis into the applied magnetic field.

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.

An automatic descent control device includes a line configured to be attached to a load. A line system retracts slack from the line when the line is not loaded and extends the line when the line is loaded. At least one braking system provides a braking force when the line is loaded so as to control extension of the line and a descent rate of the load. The at least one braking system is operable in at least two configurations, a first configuration that the at least one braking system lowers the load at a first descent rate, and a second configuration that the at least one braking system lowers or locks the load at a second descent rate. The load being a constant and the first descent rate is greater than the second descent rate.

Rotor (1) with a rotation axis L for an eddy current brake (10), wherein the rotor (1) is constructed in two parts and the two rotor parts (11, 12) are arranged axially next to one another.

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.

Provided are: an eddy-current-type reduction gear rotor having high strength at high temperatures and low electrical resistance; and a method for manufacturing the same. The eddy-current-type reduction gear rotor according to the present disclosure comprises a cylindrical part, the cylindrical part having a chemical composition satisfying formula (1) and comprising, in mass%, 0.05-0.15% of C, 0.01-0.15% of Si, 0.10-1.00% of Mn, 0.030% or less of P, 0.030% or less of S, 0.30-2.00% of Cr, 0.30-1.50% of Mo, 0.02-0.15% of V, 0.01-0.10% of Nb, 0.001-0.040% of sol. Al, 0.0005-0.0050% of B, and 0.001-0.010% of N with the remainder being Fe and impurities, and the cylindrical part further having a microstructure with a total surface area ratio of martensite and bainite of 99% or higher, and a yield stress at 700°C of 120-250 MPa.　(1): Cr + 4Si + 3 sol. Al + Mo ≤ 3.00

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.

A self-retracting lifeline (SRL) device using a system, method of use and system for controlling dynamic response between members that causes cessation of relative motion between the members, where magnetic interaction, eddy current drag, centrifugal force and / or inertial force may provide various mechanisms for controlling motion. [Solution] A system is provided in which at least two members are in a kinematic relationship, the system comprising means for coupling a first member to at least one other member, thereby producing synchronized relative motion between the members, the coupling occurring in response to a prescribed system dynamic response, the dynamic response being selected from at least one of: (a) a specific velocity behavior of one or more of the members; (b) a specific acceleration behavior of one or more of the members; and (c) a specific jerk behavior of one or more of the members.

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.

Described herein is a system, method of use and Self Retracting Lifeline (SRL) apparatus using a system that governs a dynamic response between members causing a halt in relative motion between the members. Magnetic interactions, eddy current drag forces and centrifugal and / or inertial forces may provide various mechanisms of governing movement.

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).

An electromagnet (200) includes a cylindrical core (204) and a bobbin (210). The bobbin (210) has a first barrel portion (212) delimited by a first flange (216) and a second flange (218), and a second barrel portion (214) delimited by the second flange (218) and a third flange (220). A diameter of the first flange (216) is greater than a diameter of the third flange (220). The bobbin (210) also includes an aperture (228) extending through the first and second barrel portions (212, 214), wherein the core (204) is disposed within the aperture (228). A wire (230) is wrapped around the first barrel portion (212) to define a first portion (234) of a coil (232) and around the second barrel portion (214) to define a second portion (236) of the coil (232). A power source provides current through the wire (230).

The invention relates to a braking device (1) for a rail vehicle, comprising a wheel set (99), a wheel (9) rotatable about a wheel axis (x), comprising a vortex rotor (22A; 22B) and an eddy current stator (21A; 21A; 21B) of a motor vehicle (21; 2B) and a friction brake (3) comprising a friction rotor (32) and a friction stator (31), wherein: the eddy current brake (2A; 2B) and the friction brake (3) can be sequentially activated by a single actuating device (7); the vortex rotor (22A; 22B) having a disc design and being connected to one side of the wheel (9) so as to be coaxially aligned with the wheel axis (x); the eddy current stator (21A; 21B) can be rotated in the direction of the wheel axis (x) between the vortex rotor (22A; 22B); and the wheel (9) is provided with a rim (92) acting as a friction rotor (32) and having an end face (921) oriented radially outward with respect to the wheel axis (x) and acting as a braking surface, and against which the friction stator (31) can be moved.

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 invention discloses a normal distribution type precise adjustable magnetic eddy current induction power transmission device which comprises a first connecting unit, a second connecting unit and a magnetic base body, the magnetic base body comprises a driving motor, a first driven plate, a second driven plate and a plurality of sets of magnetic assemblies, and the driving motor is connected with the first driven plate; a plurality of arc-shaped grooves are formed in the first driven plate in the circumferential direction, the second driven plate is arranged opposite to the first driven plate, a plurality of sliding grooves corresponding to the arc-shaped grooves are formed in the second driven plate, and the two ends of the magnetic assemblies are arranged in the arc-shaped grooves and the sliding grooves of the first driven plate respectively. According to the scheme, axial movement adjustment does not need to be carried out, the technical problems that in the axial cantilever process, power transmission is unbalanced, rigidity becomes poor and the like are solved, and the reliability of the magnetic coupling structure is greatly improved.