96 results about "Eddy current brake" patented technology

To solve the problem of poor heat dissipation function of the existing tower crane motors, an embodiment of the present invention provides a tower crane motor, including a motor body; the motor body includes an eddy current brake with a cooling device, and the eddy current brake is arranged at one end of the motor body and connected to one end of the motor shaft; the other end of the motor shaft is connected to a fan. The tower crane motor of the embodiment of the present invention, through the arrangement of the eddy current brake and the fan, eliminates the independent cooling fan, simplifies the structure, reduces the cost, and improves the heat dissipation capacity of the tower crane motor.

The present invention discloses a bevel gear multi-source signal fault test bench capable of implanting installation errors, comprising a vibration isolation base plate and a variable speed drive motor module, an input end torque speed sensor module, an input end encoder, a bevel gear box module, an output end encoder, an output end torque sensor module and an eddy current brake module arranged on the vibration isolation base plate; the variable speed drive motor module is connected to the input end torque speed sensor module through a first coupling, the input end torque speed sensor module is connected to the bevel gear box module through a second coupling, the bevel gear box module is connected to the output end torque sensor module through a third coupling, and the output end torque sensor module is connected to the eddy current brake module through a fourth coupling. The present invention can realize the bevel gear transmission signal collection of multiple fault types on a test bench, and can adjust the relative position of each component according to demand, and quickly replace the test piece.

Magnetic braking device comprising at least one stator (2) and at least one rotor (3), and electromagnets (5) secured to the rotor and / or the stator to produce between them, when the rotor rotates, at least one magnetic field capable of generating eddy currents braking the rotor. According to the invention, the device comprises at least one control unit (7) capable of controlling an alternating electrical power supply of at least some of the electromagnets so that the magnetic field is a rotating magnetic field, the control unit being configured to adapt a rotation speed of said magnetic field as a function of at least one data characteristic of the rotation speed of the rotor 1 by acting on at least one of the parameters of the electrical power supply of at least one of the electromagnets. FIGURE OF THE ABSTRACT: Fig. 3

The invention relates to a magnetic braking device comprising at least one stator (2) and at least one rotor (3), and electromagnets (5) rigidly connected to the rotor and / or the stator so as to produce therebetween, when the rotor rotates, at least one magnetic field capable of generating eddy currents braking the rotor. According to the invention, the device comprises at least one control unit (7) capable of controlling an AC power supply of at least some of the electromagnets such that the magnetic field is a rotating magnetic field, the control unit being configured to adapt a rotational speed of the magnetic field as a function of at least one data item characteristic of the rotational speed of the rotor (1) by determining at least one of the power supply parameters of at least one of the electromagnets.

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.

The invention belongs to the technical field of injection molding equipment, and discloses a testing machine for simulating the load of a servo motor of an injection molding machine and a self-adaptive control method.The testing machine comprises a motor input unit, a gear reduction unit, a load unit and a monitoring unit; and dynamic load characteristics in an injection molding process are simulated. According to the self-adaptive control method, a BP-PSO-PID algorithm is adopted, a load signal is collected in real time and compared with a target value to generate an error, the error is input into a BP neural network to output PID parameters, the weight of the neural network is optimized online through a particle swarm optimization algorithm, and dynamic adjustment is achieved. According to the method, load changes in the glue injection, pressure maintaining and glue melting stages are simulated through a three-section type load curve, closed-loop control is formed in combination with the quick response characteristic of the eddy current brake, and the test precision and the self-adaptive capacity are remarkably improved. The dynamic load is accurately reproduced, the research and development cost is reduced, and the research and development period is shortened.

The present invention provides a rotating mechanism, a permanent magnetic eddy current brake, and a rail vehicle. The rotating mechanism includes: a protective cover disposed at the bottom of the permanent magnetic eddy current brake's connecting beam and surrounding the exterior of the permanent magnetic eddy current brake's magnetic pole assembly to shield the magnetic pole assembly; the protective cover having an opening along the length of the magnetic pole assembly on the side facing the track; and a rotating power source disposed at the end of the magnetic pole assembly. When the permanent magnetic eddy current brake switches from a release state to a braking state, the magnetic pole assembly can be driven by the rotating power source to rotate until the working surface faces the track. When the permanent magnetic eddy current brake switches from a braking state to a release state, the magnetic pole assembly can be driven by the rotating power source to rotate until the working surface is shielded within the protective cover. The rotating mechanism can realize the switching between the braking state and the release state of the permanent magnetic eddy current brake, has a compact structure, and is highly reliable.

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.

The invention relates to a model-based fuel cell air compressor high-speed motor control rack and method. The control rack comprises an air compressor high-speed motor load control model, a high-power direct-current power supply, a three-phase two-level motor driver, a motor rapid prototype controller, an upper computer, a permanent magnet synchronous motor, an eddy current brake, a torque sensor and a signal acquisition and coding unit. The control rack constructs a load control model based on air compressor MAP data and a load torque optimization algorithm, calculates a target load torque corresponding to the highest adiabatic efficiency point according to any rotating speed, and controls the eddy current brake to perform accurate load simulation; meanwhile, a user-defined control algorithm is automatically compiled and deployed to a motor driver through a rapid prototype controller, the permanent magnet synchronous motor is driven to operate under a simulated load, and high-precision signal feedback is combined, so that safe, efficient and high-fidelity real-time closed-loop verification of the control algorithm is realized, and the research and development period is remarkably shortened.

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 application provides a kind of pneumatic permanent magnetic eddy current brake device and brake control system, it is related to two-wheel car brake device technical field, the pneumatic permanent magnetic eddy current brake device includes rotating brake disc, permanent magnet assembly and pneumatic drive assembly, rotating brake disc is fixedly arranged on wheel hub, and with wheel hub synchronous rotation;Permanent magnet assembly includes support disc and multiple permanent magnets, support disc is oppositely arranged with rotating brake disc, permanent magnet is located between support disc and rotating brake disc, all permanent magnets are distributed on support disc along the circumference direction;Pneumatic drive assembly is drivingly connected with support disc;The pneumatic permanent magnetic eddy current brake device of the application is on one hand to adopt frictionless braking, can effectively reduce the brake loss of mechanical brake device, prolong service life, on the other hand, it is independent structure, can be directly installed on existing two-wheel electric vehicle, and the modification is convenient and has strong versatility, and the braking force is balanced, can be mutually matched with mechanical brake device, forms double mode cooperative braking, and the braking effect is remarkable.

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 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 discloses a constant-power vehicle capable of accurately measuring motion power, and relates to the technical field of fitness equipment, the constant-power vehicle comprises a base and a driving shaft rotatably mounted on the base, two ends of the driving shaft are connected with a crank and a pedal, and the driving shaft is provided with a first driving wheel; the intermediate shaft is rotationally mounted on the base, and a first driven wheel is arranged on the intermediate shaft and is in transmission connection with the first driving wheel; the eddy current brake comprises a stator and a rotor (rotatably mounted and provided with a second driven wheel in transmission connection with the second driving wheel). The speed measuring unit is provided with a first sensor used for measuring the rotating speed of the intermediate shaft. The main control circuit board is in signal connection with the first sensor and the force sensor. By measuring the resistance of the eddy current brake and the rotating speed of the intermediate shaft, the actual exercise power of a user can be accurately obtained through calculation of the main control circuit board, and the fitness requirement can be better met.

The invention relates to an intermediate piece (20) for a brake disc (22) that interacts with an eddy current brake, the intermediate piece (20) being arranged or arranged between the brake disc (22) and a shaft (24) on which the brake disc (22) can be mounted or mounted, the intermediate part (20) is designed such that a braking force exerted on the brake disc (22) by means of the eddy current brake can be transferred to the shaft (24) by means of a mechanical contact of the brake disc (22) with the intermediate part (20) and by means of a mechanical contact of the intermediate part (20) with the shaft (24) and / or with a shaft flange (30) formed or fastened on the shaft (24), while a thermal energy transfer from the brake disc (22) to the shaft (24) is reduced by means of the intermediate part (20). The invention also relates to a brake disc (22) for an eddy current brake; a shaft (24) on which a brake disc (22) that interacts with the eddy current brake can be mounted; provided is an eddy current braking system. The invention also relates to a method for mounting a brake disc (22) on a shaft (24), said brake disc interacting with an eddy current brake.

The invention relates to the technical field of dynamometers, and discloses miniaturized and portable intelligent high-precision dynamometer equipment, which comprises a protection assembly, a front baffle plate is arranged at the left end of the protection assembly, a contact head penetrates through the front baffle plate, and a power supply assembly is arranged at the right end of the protection assembly. The outer side of the contact head is sleeved with a strain sensor, a transmission assembly is arranged at the right end of the strain sensor, and double-reading-head sensors are arranged in the middles of the two sides of the transmission assembly. Through cooperation of the contact head, the strain sensor and the transmission assembly, torque change can be accurately captured, high-precision measurement of the rotating speed is achieved through cooperation of the double-reading-head sensor and the rotating speed sensor, and it is ensured that the measurement error is controlled within an extremely small range. The electromagnetic eddy current brake in the integrated control mechanism can realize stepless loading, and the device has the advantages of high-precision measurement, intelligent control, convenient operation and the like while realizing miniaturization, and is suitable for dynamic performance detection in various complex scenes.

The present invention provides a train braking method, device, storage medium, and electronic device, relating to the field of train braking technology. The train includes an eddy current braking device, and the method includes: obtaining a maximum electric braking force, a maximum eddy current braking force, and a required total braking force; wherein the maximum eddy current braking force is provided by the eddy current braking device; determining a numerical relationship between the required total braking force and the maximum electric braking force and the maximum eddy current braking force; and when the numerical relationship satisfies a preset relationship, adding eddy current braking so that the train brakes based on the braking method after adding eddy current braking. The technical solution provided by the present invention can effectively brake when the train is running at high speed and can reduce the loss of the windings during braking, thereby ensuring the safe operation of the train.

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.

Roll stabilizer for a vehicle (100) comprising an actuator device (101) and two stabilizer elements (102, 104) coupled to each other via an actuator (106) of the actuator device (101) to effect a relative movement between the stabilizer elements (102, 104), wherein the actuator device (101) has a supply line connection (116) for providing a supply voltage to a supply connection (114) of a converter (108), the converter (108) for providing an alternating voltage using the supply voltage, an actuator (106) operable by the alternating voltage, and an eddy current brake (110) having an eddy current brake connection (234) coupled to a shaft (120) of the actuator (106), wherein the actuator device (101) has a control device (112) configured to To activate the eddy current brake (110) in response to generator operation of the actuator (106).

The application belongs to the technical field of eddy current braking system, and particularly relates to a permanent magnetic eddy current brake. The technical scheme is as follows: a permanent magnetic eddy current brake comprises a metal brake plate unit and a brake magnet unit, the brake magnet unit comprises a permanent magnet array, and the permanent magnet array is arranged close to the metal brake plate unit; as viewed from the metal brake plate unit to the permanent magnet array, the magnet poles of the magnets on the right side of the permanent magnet array are deflected in a clockwise direction relative to the magnet poles of the magnets on the left side, and the deflection angle is less than 180 DEG. The application provides a permanent magnetic eddy current brake capable of improving the utilization rate of magnets.

The utility model relates to the technical field of winch equipment, in particular to a four-gear direct current winch for a trailer drilling machine, which comprises a base, and an automatic drill shaft feeding assembly, an input shaft assembly, a first intermediate shaft assembly, a second intermediate shaft assembly and a roller shaft assembly which are sequentially and mutually driven are longitudinally arranged on the base. The base is further provided with an eddy current brake shaft assembly located on one side of the roller shaft assembly, the roller shaft assembly is connected with the eddy current brake shaft assembly, the input shaft assembly is connected with a direct current motor, and the direct current motor is located between the automatic drill shaft feeding assembly and the eddy current brake shaft assembly. And the eddy current brake axle assembly is connected with an electromagnetic eddy current brake. The four-gear direct-current winch is small in width size, can be installed on a trailer, meets the towing requirement that a derrick and the winch serve as a towing module, and is suitable for towing a drilling well or a vehicle-mounted direct-current drilling machine.

The present application relates to a kind of based on eddy current brake adhesion brake force enhancement method and system, comprising the following steps: when high-speed train implements emergency brake, linear eddy current brake is connected into excitation current and enters working state;On the basis of cooperating longitudinal non-adhesion brake force generated by linear eddy current brake, the surplus of maximum axle load and actual axle load is controlled excitation current to make vertical suction force in safe range, simultaneously using the vertical suction force generated, combined with the adhesion coefficient calculation obtains the increased high-speed train adhesion force available domain;Additional adhesion force available is fed back to adhesion brake system to improve adhesion brake force, and the braking effect of high-speed train is improved;With longitudinal non-adhesion brake force generated by linear eddy current brake, further realize the efficient matching use of brake force and adhesion force under multiple working conditions.The present application can be applied to any kind of linear eddy current brake, further improves total brake force on the basis of original high-speed train brake system, and improves brake efficiency.

The invention provides an eddy current brake plate design method and device, computer equipment and a storage medium, and the method comprises the steps that a brake acceleration index is determined based on the brake requirement of a magnetic suspension propulsion system, and the brake requirement comprises the operation speed and the brake time; calculating a target braking force corresponding to the braking acceleration index; braking force curves under different plate widths are simulated through electromagnetic simulation software, and the braking force curves are curves of braking force changing along with speed; selecting an optimal braking force curve from the braking force curves according to the target braking force; and the eddy current brake plate is designed based on the plate width corresponding to the optimal brake force curve. In the technical scheme provided by the invention, by simulating the braking force curves under different plate widths, the braking characteristics under different plate widths can be quickly and accurately known, so that the eddy current braking plate meeting the braking requirement is quickly designed, and the braking performance is improved.

The invention relates to a high-saturation ferrocobalt alloy and a low-temperature high-toughness eddy current braking magnetic pole. The high-saturation iron-cobalt alloy comprises the following components: 16%-18% of Co; 1.4% to 2.2% of Cr; mo: 0 or < = 1.5%; v: 0 or < = 0.4%; and the balance of Fe and inevitable impurity elements. The invention also provides a low-temperature high-toughness eddy current brake magnetic pole which is prepared from the high-saturation iron-cobalt alloy through smelting, forging, heat treatment and machining. According to the high-saturation iron-cobalt alloy and the low-temperature high-toughness eddy current braking magnetic pole prepared from the high-saturation iron-cobalt alloy, the components of the iron-cobalt alloy material are regulated and controlled, so that the magnetic pole prepared from the high-saturation iron-cobalt alloy has high saturation magnetic performance and excellent low-temperature impact toughness.

The present invention relates to a control device (10) and a method for operating an eddy current brake (12) of a vehicle (14) by setting a target current intensity with respect to a target current intensity to be conducted through at least one coil of the eddy current brake (12), at least taking into account at least one provided signal (34) with respect to a speed change of the vehicle (14) currently requested by a driver of the vehicle (14) or an automatic system of the vehicle (14), conducting an actual current intensity (I) corresponding to the target current intensity through the at least one coil of the eddy current brake (12), forecasting taking into account the at least one signal (34) and / or a provided environmental information item and / or reading out based on forecast information,whether a vehicle deceleration request for the vehicle (14) traveling without deceleration by the driver or the automatic system is likely within a predetermined future time interval, and, if appropriate, setting the target current intensity equal to a predetermined activation value or activation value curve such that an actual current intensity corresponding to the activation value or activation value curve is passed through the at least one coil of the eddy current brake (12).

The invention relates to an eddy current brake comprising a stator assembly (56, 76) and a rotor assembly able to pivot relative to the stator assembly about a rotation axis (X-X), the stator assembly (56) including an annular support (58) comprising at least one pole body (60) and at least one pole shoe (62), and wherein the stator assembly (56) includes a stainless-steel protective shield (64) fastened to the at least one pole shoe (62).

The utility model discloses a vortex braking formula belt conveyor vertical tension buffer device, and the device includes vertical tension stand and counterweight box, and the vertical tension stand is equipped with vertical vortex generation rib plate along the radial of outer periphery, and the vortex generation rib plate height is same with vertical tension stand height, and the vertical tension stand is 2, and the mirror image symmetry is arranged in the both sides of counterweight box, the counterweight box bottom is connected with fixed frame, and the fixed frame includes a plurality of recesses with vortex generation rib plate cooperation, and the inner wall both sides of each recess are equipped with the permanent magnet patch of different name magnetic pole arrangement, the part that vortex generation rib plate extends outward is located in the inner recess space of fixed frame recess, and there is fixed gap between recess inner wall and permanent magnet patch, when the counterweight box falls vertically, and vortex generation rib plate cuts the magnetic induction line and produces resistance, effectively reduces the falling speed of counterweight box, and reduces the ground impact force, and the device cooperates with original flexible buffer device, can effectively protect building structure and tension device.

A combined drive / brake unit (100) integrated into the rim (111) of a wheel (112) includes an axial flux motor (118) and an eddy current brake (120), wherein a common rotor (106) is provided for the axial flux motor (118) and the eddy current brake (120).

The invention relates to a steering device (100, 101, 102) for a vehicle, in particular an industrial truck, having a rotatably mounted steering control element, a steering signal transmitter for acquiring the rotational position of the steering control element, and a braking device (30) for generating a rotary braking torque acting on the steering control element. The braking device (30) is in the form of a friction brake (31) generating a substantially permanently constant braking torque, and / or in the form of a speed-sensitive eddy current brake.

A braking system for use with a crusher having a moving crushing member and a stationary crushing member. The braking system is positioned and is operable to restrict rotational movement of the moving crushing member. The braking system includes a braking disc or plate and one or more braking yokes that each include a magnetic member, such as a permanent magnet or an electric magnet. The braking disc is formed from an electrically conductive material and is perpendicular to the magnets of the braking yoke. Relative movement between the braking disc and the braking yoke induces an eddy current in the braking disc. The induced eddy current creates a magnetic force that opposes rotational movement of the moving crushing member. The braking system can be used with a compact eccentric crusher to restrict the rotation of a crushing roller during an idle mode.