Magnetic suspension actuator for suspension, suspension assembly and vehicle

Abstract

The utility model discloses a magnetic suspension actuator used for a suspension, a suspension assembly and a vehicle, the magnetic suspension actuator comprises a suspension disc and first magnetic bearings, the first magnetic bearings are sleeved on two sides of the suspension disc, and the first magnetic bearings are used for driving the suspension disc to magnetically suspend. Thus, the first magnetic bearings are arranged on the two sides of the suspension disc, so that the first magnetic bearings are suitable for controlling the suspension disc to suspend according to requirements, and when vibration is transmitted to the suspension disc, the vibration is suitable for being transmitted to the suspension disc to drive the suspension disc to move, so that the suspension has a higher elastic buffering effect; therefore, the vehicle provided with the magnetic suspension actuator has higher comfort. Moreover, due to the fact that the suspension formed by the magnetic suspension actuator is high in production efficiency, low in production cost and long in service life, structural interference can be avoided in the using process of the suspension formed by the magnetic suspension actuator, and noise generated in the using process of the suspension is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of suspensions, and particularly relates to a magnetic levitation actuator for a suspension, a suspension assembly and a vehicle. Background Art

[0002] In the prior art, during the driving process of a vehicle, when encountering bad road conditions, the vehicle will jolt. In the case of jolting, the vibration effect is transmitted from the wheels to the vehicle frame through the wheels, and finally acts on the vehicle cab, so that the vibration and other effects will not only affect the driving state of the vehicle, but also affect the driving experience of the user when driving the vehicle. In the related art, a suspension is provided between the wheels and the vehicle frame to reduce the effect of the vibration acting on the vehicle frame, thereby reducing the impact of the vibration on the vehicle. However, the suspension with the above functions usually has the problems of high production cost and low service life, and will generate relatively large noise during use, which affects the driving experience of the vehicle. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a magnetic levitation actuator for a suspension, the production cost of the magnetic levitation actuator is low, the service life is long, and it is relatively quiet during the working process, and can preferably absorb vibration to improve the driving experience of the vehicle.

[0004] Another object of the utility model is to provide a suspension assembly, and the magnetic levitation actuator as described above is arranged in the suspension assembly.

[0005] Still another object of the utility model is to provide a vehicle, and the suspension assembly as described above is arranged in the vehicle.

[0006] The magnetic levitation actuator for a suspension according to an embodiment of the utility model includes: a suspension disc and a first magnetic bearing, the first magnetic bearing is sleeved on both sides of the suspension disc, and the first magnetic bearing is used to drive the suspension disc to be magnetically levitated.

[0007] The magnetic levitation actuator for a suspension according to an embodiment of the present utility model is provided with first magnetic bearings on both sides of a suspension disk, so that the first magnetic bearings are adapted to control the suspension disk to levitate according to requirements, so that when vibration is transmitted to the suspension disk, it is adapted to be transmitted to the suspension disk to drive the suspension disk to move. During the movement of the suspension disk, the first magnetic bearings can provide corresponding magnetic effects to drive the suspension disk to reset, so that the vibration acting on the suspension disk can be absorbed and buffered, so that the suspension has a higher elastic buffering effect, so that a vehicle provided with the magnetic levitation actuator has higher comfort. Moreover, since the suspension composed of the magnetic levitation actuator has high production efficiency, low production cost, and a relatively long service life, and at the same time, the suspension composed of the magnetic levitation actuator can avoid structural interference during use, so that the noise generated during the use of the suspension can be reduced, so as to reduce the impact on the driving comfort of the user.

[0008] In some embodiments, the first magnetic bearing includes: a first axial stator and a second axial stator, the first axial stator is arranged on one side of the suspension disk; the second axial stator is arranged on the other side of the suspension disk, and the second axial stator is arranged opposite to the first axial stator.

[0009] In some embodiments, it further includes: a mounting part, the mounting part is provided with a mounting groove, and the first magnetic bearing is arranged in the mounting groove.

[0010] In some embodiments, the mounting part includes: a first mounting part and a second mounting part, the first mounting part is provided with a first mounting groove, and the first axial stator is arranged in the first mounting groove; the first mounting part and the second mounting part are correspondingly arranged on both sides of the suspension disk, the second mounting part is provided with a second mounting groove, the second axial stator is correspondingly arranged in the second mounting groove, and the opening directions of the first mounting groove and the second mounting groove are opposite.

[0011] In some embodiments, it further includes: an intermediate shaft, a through hole is provided at the center of the suspension disk, the intermediate shaft passes through the through hole and is fixed to the suspension disk, and the first magnetic bearings are arranged at intervals on the outer periphery of the intermediate shaft.

[0012] In some embodiments, the intermediate shaft includes: a first cylindrical part and a second cylindrical part, the suspension disk is sleeved on the outer periphery of the first cylindrical part; the first cylindrical part is connected to the second cylindrical part, and the diameter of the first cylindrical part is smaller than the diameter of the second cylindrical part, and the suspension disk abuts against the connection part between the second cylindrical part and the first cylindrical part.

[0013] In some embodiments, it further includes: a housing, an accommodation space is formed inside the housing, the first magnetic bearing and the suspension disk are disposed in the accommodation space, and at least a part of the second cylindrical portion penetrates through the housing.

[0014] In some embodiments, it further includes: a first sensor, which is used to detect the axial position of the intermediate shaft.

[0015] In some embodiments, the first sensor is disposed on the bottom side of the intermediate shaft.

[0016] In some embodiments, it further includes: an intermediate shaft and a second magnetic bearing, the suspension disk is sleeved on the outer periphery of the intermediate shaft, the second magnetic bearing and the first magnetic bearing are coaxially arranged and spaced apart, and the second magnetic bearing circumferentially defines the intermediate shaft.

[0017] In some embodiments, the second magnetic bearing is disposed at one end in the axial direction of the intermediate shaft.

[0018] In some embodiments, the second magnetic bearing includes: a radial stator and a radial rotor, the radial stator includes a plurality of spaced electromagnets; the radial rotor is disposed between two symmetrically arranged electromagnets, and the radial rotor is within the magnetic field of the electromagnets, and the radial rotor is sleeved on the outer periphery of the intermediate shaft.

[0019] In some embodiments, it further includes: a second sensor to detect the radial position of the intermediate shaft.

[0020] In some embodiments, the second sensors are arranged circumferentially on the outer periphery of the first magnetic bearing.

[0021] In some embodiments, it further includes: a housing, the housing is provided with sensor mounting grooves, the sensor mounting grooves are a plurality of circumferentially arranged, and the second sensors are respectively disposed in the sensor mounting grooves and are used in cooperation with the second sensors disposed at both ends in the radial direction of the housing.

[0022] In some embodiments, it further includes: a first sensor for detecting the axial position of the intermediate shaft; a controller connected to the first sensor and the second sensor respectively, the controller being configured to convert the detection result of the first sensor into a first control signal; and / or the controller being configured to convert the detection of the second sensor into a second control signal; a power amplifier connected to the controller, the power amplifier being configured to convert the first control signal into a first control current, and the first control current being transmitted to the first magnetic bearing; and / or the power amplifier being configured to convert the second control signal into a second control current, and the second control current being transmitted to the second magnetic bearing.

[0023] In some embodiments, it further includes: a housing and a spring. An accommodation space is formed in the housing, the intermediate shaft is disposed in the accommodation space, and a part of the intermediate shaft penetrates out of the housing. The spring is disposed at the top of the housing and sleeved outside the intermediate shaft.

[0024] In some embodiments, it further includes: a dust cover disposed outside the spring.

[0025] In some embodiments, it further includes: a first end cover and a second end cover. The first end cover is disposed at the bottom side of the housing and is adapted to connect to a wheel; the second end cover is fixedly connected to the free end of the intermediate shaft, and the second end cover is elastically connected to the spring, and the second end cover is adapted to connect to a suspension.

[0026] The suspension assembly according to an embodiment of the present invention includes: the magnetic levitation actuator, the suspension and the wheel as described above. The suspension is disposed at one end in the axial direction of the magnetic levitation actuator; the wheel is connected to the end of the magnetic levitation actuator facing away from the suspension.

[0027] According to the suspension assembly of the embodiment of the present utility model, since the magnetic levitation actuator as shown above is provided in the suspension assembly, by providing first magnetic bearings on both sides of the suspension disk, the first magnetic bearings are adapted to control the suspension of the suspension disk according to requirements, so that when vibration is transmitted to the suspension disk, it is adapted to be transmitted to the suspension disk to drive the suspension disk to move. During the movement of the suspension disk, the first magnetic bearings can provide corresponding magnetic effects to drive the suspension disk to reset, so that the vibration acting on the suspension disk can be absorbed and buffered, so that the suspension has a higher elastic buffering effect, and the vehicle provided with the magnetic levitation actuator has higher comfort. Moreover, since the suspension constituted by using the magnetic levitation actuator has high production efficiency, low production cost, and a relatively high service life, and at the same time, the suspension constituted by using the magnetic levitation actuator can avoid structural interference during use, so that the noise generated during the use of the suspension can be reduced, thereby reducing the impact on the driving comfort of the user.

[0028] A vehicle according to an embodiment of the present utility model includes: the suspension assembly as described above.

[0029] According to the vehicle of the embodiment of the present utility model, since the magnetic levitation actuator as shown above is provided in the suspension assembly, the suspension assembly can absorb and buffer the vibration acting on the suspension disk, so that the suspension has a higher elastic buffering effect, and the vehicle provided with the magnetic levitation actuator has higher comfort. Moreover, since the suspension constituted by using the magnetic levitation actuator has high production efficiency, low production cost, and a relatively high service life, and at the same time, the suspension constituted by using the magnetic levitation actuator can avoid structural interference during use, so that the noise generated during the use of the suspension can be reduced, thereby reducing the impact on the driving comfort of the user.

[0030] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Brief Description of the Drawings

[0031] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0032] Figure 1 is a schematic structural diagram of a magnetic levitation actuator according to an embodiment of the present utility model;

[0033] Figure 2 is a schematic structural diagram of a magnetic levitation actuator according to an embodiment of the present utility model;

[0034] Figure 3 is a schematic structural diagram of a magnetic levitation actuator according to an embodiment of the present utility model;

[0035] Figure 4 is a schematic structural diagram of a magnetic levitation actuator according to an embodiment of the present invention;

[0036] Figure 5 is a schematic structural diagram of a magnetic levitation actuator according to an embodiment of the present invention;

[0037] Figure 6 is a schematic structural diagram of a first magnetic bearing according to an embodiment of the present invention;

[0038] Figure 7 is an exploded structural diagram of a first magnetic bearing according to an embodiment of the present invention;

[0039] Figure 8 is a schematic structural diagram of a second magnetic bearing according to an embodiment of the present invention;

[0040] Figure 9 is an exploded structural diagram of a second magnetic bearing according to an embodiment of the present invention;

[0041] Reference numerals:

[0042] Magnetic levitation actuator 10, wheel 11,

[0043] Levitation disc 100, through hole 110,

[0044] First magnetic bearing 200, first axial stator 210, second axial stator 220,

[0045] Mounting part 300, mounting groove 310, first mounting groove 311, second mounting groove 312, first mounting part 320, second mounting part 330,

[0046] Intermediate shaft 400, first cylindrical part 410, second cylindrical part 420,

[0047] Second magnetic bearing 500, radial stator 510, electromagnet 520, radial rotor 530,

[0048] Housing 600, accommodation space 610, first sensor 620, sensor mounting groove 630, second sensor 640,

[0049] Spring 700, dust cover 710, first end cap 720, second end cap 730. Detailed implementation manners

[0050] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0051] Next, refer to Figures 1-9Describe a magnetic levitation actuator 10 for a suspension according to an embodiment of the present utility model, including: a suspension disk 100 and a first magnetic bearing 200.

[0052] Specifically, the first magnetic bearing 200 is sleeved on both sides of the suspension disk 100, and the first magnetic bearing 200 is used to drive the suspension disk 100 to be magnetically levitated.

[0053] That is to say, during the use of the suspension, the suspension is adapted to connect the vehicle frame and the wheel 11, so that the vibration received by the vehicle during driving is adapted to be buffered by the suspension, improving the comfort of the vehicle during driving.

[0054] In this application, the suspension is adapted to include the magnetic levitation actuator 10, so that the suspension is adapted to adopt the magnetic levitation method during use, enabling the magnetic levitation actuator 10 to absorb and buffer vibrations, thereby making the performance of the suspension more reliable during use.

[0055] Specifically, the magnetic levitation actuator 10 is adapted to include: a suspension disk 100 and a first magnetic bearing 200. The suspension disk 100 is adapted to be relatively arranged with the first magnetic bearing 200, so that when the first magnetic bearing 200 is energized, it is adapted to provide magnetic adsorption. Since the position of the first magnetic bearing 200 is relatively fixed, the first magnetic bearing 200 is adapted to magnetically drive the suspension disk 100 to levitate, driving other structures to support the vehicle frame, enabling the vibration acting on the suspension to be buffered and absorbed by the magnetic levitation actuator 10 to avoid the impact of vibrations on the vehicle. And since the first magnetic bearing 200 is provided in two, and the two first magnetic bearings 200 are relatively arranged on both sides of the suspension disk 100, the two first magnetic bearings 200 are adapted to provide magnetic adsorption on the suspension disk 100 from both sides to drive the suspension disk 100 to levitate. When the vibration is transmitted to the magnetic levitation actuator 10, it is adapted to drive the suspension disk 100 to move in the vertical direction, and the vertical movement will change the relative position between the suspension disk 100 and the first magnetic bearing 200, enabling the first magnetic bearing 200 to provide a magnetic force in the opposite direction to drive the suspension disk 100 to reset, thereby realizing the absorption and buffering of the vibration effect.

[0056] The magnetic levitation actuator 10 for a suspension according to an embodiment of the present utility model is provided with first magnetic bearings 200 on both sides of a suspension disk 100, so that the first magnetic bearings 200 are adapted to control the suspension of the suspension disk 100 according to requirements, so that when vibration is transmitted to the suspension disk 100, it is adapted to be transmitted to the suspension disk 100 to drive the suspension disk 100 to move. During the movement of the suspension disk 100, the first magnetic bearings 200 can provide corresponding magnetic effects to drive the suspension disk 100 to reset, so that the vibration acting on the suspension disk 100 can be absorbed and buffered, so that the suspension has a higher elastic buffering effect, so that a vehicle provided with the magnetic levitation actuator 10 has higher comfort. Moreover, since the suspension constituted by using the magnetic levitation actuator 10 has high production efficiency, low production cost, and a relatively long service life, and at the same time, the suspension constituted by using the magnetic levitation actuator 10 can avoid structural interference during use, so that the noise generated during the use of the suspension can be reduced, so as to reduce the impact on the driving comfort of users.

[0057] In some embodiments, the first magnetic bearing 200 includes: a first axial stator 210 and a second axial stator 220. The first axial stator 210 is provided on one side of the suspension disk 100; the second axial stator 220 is provided on the other side of the suspension disk 100, and the second axial stator 220 is disposed opposite to the first axial stator 210.

[0058] That is to say, the first magnetic bearing 200 is adapted to include the first axial stator 210 and the second axial stator 220 which are disposed opposite to each other. Since the magnetic properties of the first axial stator 210 and the second axial stator 220 are disposed opposite to each other, the first axial stator 210 can drive the suspension disk 100 to be suspended together with the second axial stator 220, so that vibration can be absorbed between the first magnetic bearing 200 and the suspension disk 100 through the suspension effect, and the transmission of vibration through the suspension effect is avoided, so that the magnetic levitation actuator 10 has higher comfort during use.

[0059] In some embodiments, the magnetic levitation actuator 10 further includes: a mounting portion 300. The mounting portion 300 is provided with a mounting groove 310, and the first magnetic bearing 200 is disposed in the mounting groove 310. That is to say, the mounting portion 300 is provided with the mounting groove 310, and the mounting groove 310 is adapted to provide a position for the setting of the first magnetic bearing 200, so that the first magnetic bearing 200 can be restricted and assembled in the mounting portion 300, so that the first magnetic bearing 200 can be driven and used according to the design.

[0060] In some embodiments, the mounting portion 300 includes: a first mounting portion 320 and a second mounting portion 330. A first mounting groove 311 is provided in the first mounting portion 320, and the first axial stator 210 is disposed in the first mounting groove 311. The first mounting portion 320 and the second mounting portion 330 are correspondingly arranged on both sides of the suspension disk 100. A second mounting groove 312 is provided in the second mounting portion 330, and the second axial stator 220 is correspondingly disposed in the second mounting groove 312, and the opening directions of the first mounting groove 311 and the second mounting groove 312 are opposite to each other. It can be understood that in some specific embodiments, for the convenience of understanding the present solution, it is suitable to make the mounting portion 300 include the first mounting portion 320 and the second mounting portion 330. The first mounting portion 320 can be arranged on the upper side of the suspension disk 100, and the second mounting portion 330 can be arranged on the lower side of the suspension disk 100. And a first mounting groove 311 is provided in the first mounting portion 320, and a second mounting groove 312 is provided in the second mounting portion 330, so that the first axial stator 210 and the second axial stator 220 arranged on both sides of the suspension disk 100 can be respectively arranged in the first mounting groove 311 and the second mounting groove 312, so that the first magnetic bearing 200 can be arranged at the designated position according to the design to realize the magnetic suspension restriction of the suspension disk 100.

[0061] In some embodiments, the magnetic levitation actuator 10 further includes: an intermediate shaft 400. A through hole 110 is provided at the center of the suspension disk 100. The intermediate shaft 400 passes through the through hole 110 and is fixed to the suspension disk 100, and the first magnetic bearing 200 is spaced apart from the outer periphery of the intermediate shaft 400. It should be noted that during the construction of the intermediate shaft 400, it is suitable to use an iron core or a magnetic conductor to construct the intermediate shaft, so that during the use process of the intermediate shaft, it can have higher structural performance and service performance to meet the use of the magnetic levitation actuator 10, so that the suspension effect of the suspension disk 100 can be transmitted through the intermediate shaft according to the design, so that the magnetic levitation actuator 10 can be suspended and used according to the design. That is to say, during the construction of the magnetic levitation actuator 10, it is also suitable to construct an intermediate shaft 400. The intermediate shaft 400 is suitable to be in contact with the suspension disk 100, so that when the first magnetic bearing 200 is suitable to drive the suspension disk 100 to perform suspension movement, the intermediate shaft 400 can be synchronously driven to move through the fixed connection between the suspension disk 100 and the intermediate shaft 400, so that the suspension can be suspended according to the design to facilitate the subsequent buffering and absorption of vibration. Specifically, a through hole 110 is provided at the center of the suspension disk 100. The through hole 110 is suitable to provide space for the assembly of the suspension disk 100, so that the intermediate shaft 400 can pass through the through hole 110 and be in contact with it, so that the suspension effect of the suspension disk 100 is suitable to be transmitted to the intermediate shaft 400 through the through hole 110, thereby realizing the suspension effect of the magnetic levitation actuator 10.

[0062] In some embodiments, the intermediate shaft 400 includes: a first cylindrical portion 410 and a second cylindrical portion 420. The suspension disk 100 is sleeved on the outer periphery of the first cylindrical portion 400. The first cylindrical portion 410 is connected to the second cylindrical portion 420, and the diameter of the first cylindrical portion 410 is smaller than that of the second cylindrical portion 420, and the suspension disk 100 is abutted against the connection between the second cylindrical portion 420 and the first cylindrical portion 410.

[0063] That is to say, the intermediate shaft 400 includes a first cylindrical portion 410 and a second cylindrical portion 420. The suspension disk 100 is arranged at the connection between the first cylindrical portion 410 and the second cylindrical portion 420, so that the suspension disk 100 is adapted to transmit the suspension effect to the intermediate shaft 400 through the connection, realizing the driving suspension of the suspension disk 100. In order to facilitate the production and construction of the intermediate shaft 400 and improve the production efficiency, it is suitable that the diameter of the first cylindrical portion 410 is smaller than that of the second cylindrical portion 420. At the same time, it is also convenient for the assembly of the intermediate shaft 400, so that the connection on the intermediate shaft 400 can abut against the suspension disk 100, so that when the suspension disk 100 is suspended, it can drive the intermediate shaft 400 to move, realizing the suspension of the suspension disk 100, so that the suspension can better absorb vibration and improve the service performance of the suspension.

[0064] In some embodiments, the magnetic levitation actuator 10 further includes: a housing 600. An accommodation space 610 is formed in the housing 600. The first magnetic bearing 200 and the suspension disk 100 are arranged in the accommodation space 610, and at least a part of the second cylindrical portion 420 passes through the housing 600. It can be understood that the housing 600 is adapted to cover the outer periphery, so that the housing 600 can protect the structures arranged therein, making the magnetic levitation actuator 10 have higher service performance and service life during use. Specifically, an accommodation space 610 is formed in the housing 600, and an open mouth is provided at one end of the accommodation space 610, so that some structures in the magnetic levitation actuator 10 can be assembled into the accommodation space 610 through the open mouth, simplifying the assembly process and improving the assembly efficiency, and making the magnetic levitation actuator 10 have higher service performance during use to improve the vibration absorption performance of the suspension. At the same time, the second cylindrical portion 420 is adapted to pass through the housing 600, so that other structures can be connected to the second cylindrical portion to realize the assembly connection between the intermediate shaft 400 and other structures.

[0065] In some embodiments, the magnetic levitation actuator 10 further includes: a first sensor 620, the first sensor 620 is disposed on the bottom side of the intermediate shaft 400, and the first sensor 620 is used to detect the axial position of the intermediate shaft 400. It should be noted that during the use of the magnetic levitation actuator 10, it is suitable to detect the position of the first magnetic bearing 200 through the first sensor 620 to detect whether the axial position of the first magnetic bearing 200 is in a normal position, and feedback is given according to the detection result, so that the performance of the magnetic levitation actuator 10 can be adjusted according to the use status, so that the vehicle equipped with the magnetic levitation actuator 10 has higher comfort. The first sensor 620 is disposed on the bottom side of the intermediate shaft 400, so that the first sensor 620 can detect and determine the axial position of the intermediate shaft 400 by detecting the relative position between the intermediate shaft 400 and the bottom of the shell 600, so that the first sensor 620 can detect the intermediate shaft 400 more accurately and reliably.

[0066] In some embodiments, the magnetic levitation actuator 10 also includes: an intermediate shaft 400 and a second magnetic bearing 500, the suspension disk 100 is sleeved on the outer periphery of the intermediate shaft 400, the second magnetic bearing 500 and the first magnetic bearing 200 are coaxial and spaced apart, the second magnetic bearing 500 is arranged on the side of the first magnetic bearing 200 away from the suspension disk 100, and the second magnetic bearing 500 circumferentially limits the intermediate shaft 400.

[0067] In this way, during the construction of the magnetic levitation actuator 10, it is also suitable to construct a second magnetic bearing 500, which is suitable for limiting the position of the intermediate shaft 400 from the circumferential direction, so that the position of the intermediate shaft 400 in the shell 600 can be more reliably defined, thereby being able to drive the suspension disk 100 to suspend, so as to achieve the suspension effect of the magnetic levitation actuator 10, so that the subsequent magnetic levitation actuator 10 has higher performance during use to meet the driving needs of the vehicle, thereby improving the comfort of users driving the vehicle.

[0068] In some embodiments, the second magnetic bearing 500 is disposed at one end of the intermediate shaft 400 in the axial direction. It should be noted that the second magnetic bearing 500 disposed at either end of the intermediate shaft 400 can achieve axial restriction of the intermediate shaft 400, and in order to reduce the influence of external impurities and dust on the use of the magnetic suspension actuator 10, it is suitable to construct the second magnetic bearing 500 in the housing 600, so that the magnetic suspension actuator 10 has higher performance and service life, and reduces the use cost.

[0069] In some embodiments, the second magnetic bearing 500 includes a radial stator 510 and a radial rotor 530. The radial stator 510 includes a plurality of electromagnets 520 arranged at intervals. The radial rotor 530 is disposed between two symmetrically arranged electromagnets 520, and the radial rotor 530 is within the magnetic field of the electromagnets 520. The radial rotor 530 is sleeved on the outer periphery of the intermediate shaft 400.

[0070] It can be understood that since the radial stator 510 includes a plurality of electromagnets 520 arranged at intervals, the magnetic field intensity of the electromagnets 520 can be controlled and adjusted by controlling the energizing current on the electromagnets 520, so that the electromagnets 520 can drive the radial rotor 530 to levitate as designed, and then drive the suspension disc 100 to levitate to achieve the levitation of the magnetic levitation actuator 10 in the axial direction.

[0071] In some embodiments, the magnetic levitation actuator 10 further includes a second sensor 640. The second sensor 640 is circumferentially arranged on the outer periphery of the first magnetic bearing 200 to detect the radial position of the intermediate shaft 400. It should be noted that the second sensor 640 is adapted to detect the distance between the bottom end of the intermediate shaft 400 and the bottom wall of the housing 600 to feedback the relative levitation condition of the intermediate shaft 400 and the suspension disc 100. It can be understood that since the second sensor 640 is arranged on the outer periphery of the intermediate shaft 400, when the second magnetic bearing 500 drives the intermediate shaft 400 to levitate, it is adapted to detect and judge the position of the intermediate shaft 400 through the second sensor 640, and feedback the detection result to the second magnetic bearing 400 to control and adjust the performance of the second magnetic bearing 500, so that the performance of the magnetic levitation actuator 10 can be adjusted according to the usage situation, so that the output performance of the magnetic levitation actuator 10 can meet the current usage requirements.

[0072] Specifically, the signal output from the second sensor 640 corrects the current passing through the electromagnet 520 with the help of an electronic control system, thereby controlling the attraction force of the electromagnet 520, so that the rotating shaft operates in a stable equilibrium state and meets certain accuracy requirements. It is a component and working principle of an active magnetic bearing system. After the second sensor 640 detects the displacement of the radial rotor 530 deviating from the reference point, the microprocessor as the controller converts the detected displacement into a control signal, and then the power amplifier converts the control signal into a control current. The control current generates a magnetic force in the actuator electromagnet 520 to keep the radial rotor 530 at its levitation position unchanged, so as to achieve the magnetic stability drive of the second magnetic bearing 500 for the suspension disc 100.

[0073] Moreover, by arranging the second sensors 640 in a circumferential arrangement on the outer periphery of the intermediate shaft 400, each second sensor 640 can detect the position of the intermediate shaft 400, so that the detection results of multiple second sensors 640 can be integrated to realize the detection of the radial position of the intermediate shaft 400.

[0074] In some embodiments, it further includes: a housing 600, on which there are sensor mounting grooves 630. The sensor mounting grooves 630 are multiple and circumferentially arranged. The second sensors 640 are respectively arranged in the sensor mounting grooves 630, and the second sensors 640 relatively arranged at both ends in the radial direction of the housing 600 are used in cooperation. It can be understood that by providing the sensor mounting grooves 630 on the housing 600, the sensor mounting grooves 630 are suitable for providing positions for the installation of the second sensors 640, so as to simplify the assembly process of the second sensors 640, and enable the second sensors 640 to be assembled and used on the housing 600 according to the design, so as to improve the use performance and reliability of the second sensors 640. Moreover, since the second sensors 640 relatively arranged at both ends in the radial direction of the housing 600 are used in cooperation, the detection of the first magnetic bearing 200 by the second sensors 640 is more accurate and reliable, so that the radial detection accuracy of the intermediate shaft 400 by the second sensors 640 is higher, and the use performance of the magnetic levitation actuator 10 is improved.

[0075] In some embodiments, the magnetic levitation actuator 10 further includes: a first sensor 620, a controller, and a power amplifier. The first sensor 620 is used to detect the axial position of the intermediate shaft 400. The controller is configured to convert the detection result of the first sensor 620 into a first control signal; and / or the controller is configured to convert the detection of the second sensor 640 into a second control signal; the power amplifier is connected to the controller. The power amplifier is configured to convert the first control signal into a first control current, and the first control current is transmitted to the first magnetic bearing 200; and / or the power amplifier is configured to convert the second control signal into a second control current, and the second control current is transmitted to the second magnetic bearing 500.

[0076] That is to say, during the use of the first sensor 620 and the second sensor 640, it is suitable to collect the detection signals of the first sensor 620 and the second sensor 640 through the controller, and then convert the detection signals into corresponding control signals, and transmit the control signals to the power amplifier correspondingly. The power amplifier is suitable for converting the control signals into control currents and inputting them to the first magnetic bearing 200 or the second magnetic bearing 500 correspondingly, so as to control the output performance of the first magnetic bearing 200 and the second magnetic bearing 500 for adjustment, thereby driving the suspension performance of the magnetic levitation actuator 10 to be adjusted to better drive the suspension disc 100 to levitate through the intermediate shaft 400, so that the magnetic levitation actuator 10 has higher use performance to meet the use requirements.

[0077] In some embodiments, the magnetic levitation actuator 10 further includes: a housing 600 and a spring 700. An accommodation space 610 is formed in the housing 600. The intermediate shaft 400 is arranged in the accommodation space 610, and a part of the intermediate shaft 400 penetrates out of the housing 600. The spring 700 is arranged on the top of the housing 600 and sleeved outside the intermediate shaft 400. That is to say, during the use of the magnetic levitation actuator 10, in case of a power failure, the magnetic suspension between the first magnetic bearing 200 and the suspension disc 100 disappears, so that the spring 700 is suitable for providing a protective effect for elastic buffering to avoid the direct rigid contact of the magnetic levitation actuator to affect the structural performance, so that the suspension has higher use performance.

[0078] In some embodiments, the magnetic levitation actuator 10 further includes: a dust cover 710. The dust cover 710 is arranged outside the spring 700. In this way, by arranging the dust cover 710 outside the spring 700, the dust cover 710 is suitable for covering the outside of the spring 700 to protect the spring 700, making the use of the spring 700 more reliable. At the same time, since the dust cover 710 has high wear-resistant ductility, the setting of the dust cover 710 can be attached to the outer circumference of the spring 700, so that the dust cover 710 can prevent dust from entering the magnetic levitation actuator 10, so that the magnetic levitation actuator 10 has higher performance during use.

[0079] In some embodiments, the magnetic suspension actuator 10 further includes: a first end cover 720 and a second end cover 730, the first end cover 720 is arranged at the bottom side of the housing 600, and the first end cover 720 is suitable for connecting the wheel 11; the second end cover 730 is fixedly connected to the free end of the second column portion 420, and the second end cover 730 is elastically connected to the spring 700, and the second end cover 730 is suitable for connecting the suspension. It can be understood that the magnetic suspension actuator 10 is also suitable for including the first end cover 720 and the second end cover 730, and the first end cover 720 is suitable for corresponding to the open opening at the bottom of the housing 600, so that the first end cover 720 is shielded from the bottom of the housing 600, and dust and the like are prevented from entering the housing 600 from the open side at the bottom of the housing 600 to affect the magnetic suspension actuator 10, so that the magnetic suspension actuator 10 has higher performance and service life. A second end cover 730 is suitable for being constructed at the free end of the second column portion 420, so that a mounting portion 300 is provided on the second end cover 730, so that the suspension can be connected to the mounting portion 300 on the second end cover 730 to realize the assembly connection of the magnetic levitation actuator 10, so that the magnetic levitation actuator 10 can be assembled to the frame according to the design to absorb and buffer the vibration during the driving of the vehicle, thereby improving the comfort of the vehicle during the driving process.

[0080] According to the suspension assembly of the embodiment of the utility model, it includes: the magnetic suspension actuator 10, the suspension and the wheel 11 as described above, the suspension is arranged at one end of the axial direction of the magnetic suspension actuator 10; the wheel 11 is connected to the end of the magnetic suspension actuator 10 away from the suspension. In this way, since the magnetic suspension actuator 10 as shown above is arranged in the suspension assembly, the first magnetic bearing 200 is arranged on both sides of the suspension plate 100, so that the first magnetic bearing 200 is suitable for controlling the suspension plate 100 to suspend according to demand, so that when the vibration is transmitted to the suspension plate 100, it is suitable for being transmitted to the suspension plate 100 to drive the suspension plate 100 to move, and during the movement of the suspension plate 100, the first magnetic bearing 200 can provide a corresponding magnetic effect to drive the suspension plate 100 to reset, so that the vibration acting on the suspension plate 100 can be absorbed and buffered, so that the suspension has a higher elastic buffering effect, so that the vehicle provided with the magnetic suspension actuator 10 has a higher comfort. Moreover, since the suspension formed by the magnetic levitation actuator 10 has high production efficiency, low production cost, and a long service life, the suspension formed by the magnetic levitation actuator 10 can avoid structural interference during use, so that the noise generated by the suspension during use can be reduced, thereby reducing the impact on user driving comfort.

[0081] A vehicle according to an embodiment of the present utility model includes: the suspension assembly as described above. Since the magnetic levitation actuator 10 as shown above is provided in the suspension assembly, the suspension assembly can absorb and buffer the vibration acting on the suspension disk 100, so that the suspension has a higher elastic buffering effect, and the vehicle provided with the magnetic levitation actuator 10 has higher comfort. Moreover, since the suspension composed of the magnetic levitation actuator 10 has high production efficiency, low production cost, and a relatively long service life, and at the same time, the suspension composed of the magnetic levitation actuator 10 can avoid structural interference during use, so that the noise generated during the use of the suspension can be reduced, thereby reducing the impact on the driving comfort of the user.

[0082] Other components and operations of the vehicle according to the embodiment of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0083] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0084] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A magnetic suspension actuator for a suspension, characterized in that: include: Suspension plate (100); A first magnetic bearing (200), wherein the first magnetic bearing (200) is sleeved on both sides of the suspension disk (100), and the first magnetic bearing (200) is used to drive the suspension disk (100) to be magnetically suspended.

2. The magnetic suspension actuator for suspension according to claim 1, characterized in that: The first magnetic bearing (200) comprises: A first axial stator (210), the first axial stator (210) being arranged on one side of the suspension disk (100); A second axial stator (220), wherein the second axial stator (220) is disposed on the other side of the suspension disk (100), and the second axial stator (220) is disposed opposite to the first axial stator (210).

3. The magnetic suspension actuator for suspension according to claim 2, characterized in that: Also includes: A mounting portion (300), wherein a mounting groove (310) is provided on the mounting portion (300), and the first magnetic bearing (200) is arranged in the mounting groove (310).

4. The magnetic suspension actuator for suspension according to claim 3, characterized in that: The mounting portion (300) comprises: A first mounting portion (320), wherein a first mounting groove (311) is provided in the first mounting portion (320), and the first axial stator (210) is provided in the first mounting groove (311); A second mounting portion (330), wherein the first mounting portion (320) and the second mounting portion (330) are correspondingly arranged on both sides of the suspension disk (100), a second mounting groove (312) is arranged in the second mounting portion (330), the second axial stator (220) is correspondingly arranged in the second mounting groove (312), and the opening directions of the first mounting groove (311) and the second mounting groove (312) are arranged opposite to each other.

5. The magnetic suspension actuator for suspension according to claim 1, characterized in that: Also includes: An intermediate shaft (400), a through hole (110) is provided at the center of the suspension disk (100), the intermediate shaft (400) is passed through the through hole (110) and is fixed to the suspension disk (100), and the first magnetic bearing (200) is arranged at intervals on the outer periphery of the intermediate shaft (400).

6. The magnetic suspension actuator for suspension according to claim 5, characterized in that: The intermediate shaft (400) comprises: A first column portion (410), wherein the suspension disk (100) is sleeved on the outer circumference of the first column portion (410); The first column part (410) is connected to the second column part (420), and the diameter of the first column part (410) is smaller than the diameter of the second column part (420), and the suspension disk (100) is disposed in abutment at the connection between the second column part (420) and the first column part (410).

7. The magnetic suspension actuator for suspension according to claim 6, characterized in that: Also includes: A housing (600) is formed with a receiving space (610), the first magnetic bearing (200) and the suspension disk (100) are arranged in the receiving space (610), and at least a portion of the second column portion (420) passes through the housing (600).

8. The magnetic suspension actuator for suspension according to claim 5, characterized in that: Also includes: A first sensor (620), wherein the first sensor (620) is used to detect the axial position of the intermediate shaft (400).

9. The magnetic suspension actuator for suspension according to claim 8, characterized in that: The first sensor (620) is disposed on the bottom side of the intermediate shaft (400).

10. The magnetic suspension actuator for suspension according to claim 1, characterized in that: Also includes: An intermediate shaft (400) and a second magnetic bearing (500), the suspension disk (100) is sleeved on the outer circumference of the intermediate shaft (400), the second magnetic bearing (500) and the first magnetic bearing (200) are coaxial and spaced apart, and the second magnetic bearing (500) circumferentially limits the intermediate shaft (400).

11. The magnetic suspension actuator for suspension according to claim 10, characterized in that: The second magnetic bearing (500) is arranged at one end of the intermediate shaft (400) in the axial direction.

12. The magnetic suspension actuator for suspension according to claim 10, characterized in that: The second magnetic bearing (500) comprises: A radial stator (510), the radial stator (510) comprising a plurality of electromagnets (520) arranged at intervals; A radial rotor (530), wherein the radial rotor (530) is arranged between two symmetrically arranged electromagnets (520), and the radial rotor (530) is in the magnetic field of the electromagnets (520), and the radial rotor (530) is sleeved on the outer periphery of the intermediate shaft (400).

13. The magnetic suspension actuator for suspension according to claim 10, characterized in that: Also includes: A second sensor (640) is provided to detect the radial position of the intermediate shaft (400).

14. The magnetic suspension actuator for suspension according to claim 13, characterized in that: There are a plurality of the second sensors (640), and the plurality of the second sensors (640) are arranged on the outer circumference of the intermediate shaft (400).

15. The magnetic suspension actuator for suspension according to claim 13, characterized in that: Also includes: A shell (600), wherein a sensor mounting groove (630) is provided on the shell (600), wherein the sensor mounting groove (630) is multiple and arranged in a circumferential direction, and the second sensors (640) are arranged in the sensor mounting groove (630) in a one-to-one correspondence, and are used in conjunction with the second sensors (640) arranged at both ends of the shell (600) in a radial direction.

16. The magnetic suspension actuator for suspension according to claim 13, characterized in that: Also includes: a first sensor (620), the first sensor (620) being used to detect an axial position of the intermediate shaft (400); a controller, the controller being connected to the first sensor (620) and the second sensor (640) respectively, the controller being configured to convert a detection result of the first sensor (620) into a first control signal; and / or the controller is configured to convert the detection of the second sensor (640) into a second control signal; a power amplifier connected to the controller, the power amplifier being configured to convert the first control signal into a first control current, the first control current being transmitted to the first magnetic bearing (200); and / or The power amplifier is configured to convert the second control signal into a second control current, which is transmitted to the second magnetic bearing (500).

17. The magnetic suspension actuator for suspension according to claim 5, characterized in that: Also includes: A housing (600) and a spring (700), wherein a receiving space (610) is formed in the housing (600), the intermediate shaft (400) is arranged in the receiving space (610), and a portion of the intermediate shaft (400) passes through the housing (600), and the spring (700) is arranged at the top of the housing (600), and the spring (700) is sleeved on the outer side of the intermediate shaft (400).

18. The magnetic suspension actuator for suspension according to claim 17, characterized in that: Also includes: A dust cover (710), wherein the dust cover (710) is arranged on the outside of the spring (700).

19. The magnetic suspension actuator for suspension according to claim 17, characterized in that: Also includes: A first end cover (720), the first end cover (720) being disposed on the bottom side of the housing (600), and the first end cover (720) being suitable for connecting to a wheel (11); A second end cover (730), wherein the second end cover (730) is fixedly connected to the free end of the intermediate shaft (400), and the second end cover (730) is elastically connected to the spring (700), and the second end cover (730) is suitable for connecting to a suspension.

20. A suspension assembly, characterized in that: include: The magnetic suspension actuator according to any one of claims 1 to 19; A suspension, the suspension being arranged at one axial end of the magnetic suspension actuator; A wheel (11), the wheel (11) being connected to an end of the magnetic suspension actuator facing away from the suspension.

21. A vehicle, characterized in that: include: The suspension assembly as claimed in claim 20.

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