CN113085466A - Vehicle magnetic suspension damping system - Google Patents
Vehicle magnetic suspension damping system Download PDFInfo
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- CN113085466A CN113085466A CN202110498067.2A CN202110498067A CN113085466A CN 113085466 A CN113085466 A CN 113085466A CN 202110498067 A CN202110498067 A CN 202110498067A CN 113085466 A CN113085466 A CN 113085466A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/001—Arrangements for attachment of dampers
- B60G13/005—Arrangements for attachment of dampers characterised by the mounting on the axle or suspension arm of the damper unit
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Abstract
The invention relates to a magnetic suspension shock absorption system of a vehicle, which comprises a shock absorber and a plurality of magnetic suspension shock absorption devices; the magnetic suspension damping device comprises two lever arms which are transversely arranged above the axle and are parallel to each other, two ends of each lever arm are respectively a hinged end and a magnetic suspension end, the hinged ends are hinged to the supporting columns, the supporting columns are vertically arranged on the axle, a magnetic suspension mechanism is arranged below the magnetic suspension ends, the magnetic suspension mechanism comprises an upper magnet arranged at the bottom of each lever arm and a lower magnet arranged at the position of the axle right below the upper magnet, the upper magnet and the lower magnet are opposite in homopolar, a fulcrum mechanism is arranged above one side of each lever arm far away from the magnetic suspension ends, the top of each fulcrum mechanism is fixedly connected to the bottom of the frame, and the bottom of each fulcrum mechanism is movably connected; the hinged end and the magnetic suspension end of the two lever arms are arranged in a crossed mode. The invention realizes the active adjustment of the shock absorption capacity of the vehicle suspension in a magnetic suspension mode.
Description
Technical Field
The invention belongs to the technical field of vehicle suspension, and particularly relates to a vehicle magnetic suspension damping system.
Background
The suspension system is a general term for all force-transmitting connecting devices between a frame and an axle or a wheel of an automobile, and has the functions of transmitting force and moment acting between the wheel and the frame, buffering impact force transmitted to the frame or an automobile body from an uneven road surface and attenuating vibration caused by the impact force so as to ensure smooth running of the automobile. The suspension system should function to support the vehicle body and improve the ride, and different suspension arrangements will give the driver a different driving experience. The suspension system which looks like a simple appearance integrates various acting forces, determines the stability, comfort and safety of the automobile and is one of the key parts of the modern automobile.
Generally, a suspension system of an automobile is divided into a non-independent suspension type and an independent suspension type, wherein wheels which are not independently suspended are arranged at two ends of an integral axle, and when one wheel jumps, the other wheel correspondingly jumps, so that the whole automobile body vibrates or inclines; the independent suspension axle is divided into two sections, each wheel is independently installed below the frame through a spiral spring, when the wheel on one side jumps, the wheel on the other side is not affected, the wheels on the two sides can independently move, and the stability and the comfort of the automobile are improved.
The non-independent suspension system has the advantages of simple structure, low cost, high strength, easy maintenance and small positioning change of the front wheels in the driving process, but is basically not used in the field of passenger vehicles due to poor comfort and operation stability, and is mainly used on trucks, buses or other special vehicles.
The active suspension system is a new type of suspension system developed in the last decade and controlled by a computer. It collects the technical knowledge of mechanics and electronics, and is a relatively complex high-tech device. For example, the central hub of the suspension system of the car is a microcomputer, and 5 sensors on the suspension system respectively transmit data such as the speed of the car, the brake pressure of a front wheel, the speed of stepping on an accelerator pedal, the amplitude and frequency of the vertical direction of the car body, the angle of a steering wheel, the steering speed and the like to the microcomputer. The computer continuously receives the data and compares the data with a predetermined threshold to select a corresponding suspension system state.
Therefore, the active suspension system integrating complex technologies such as sensors, computer control and the like and the dependent suspension system with simple structure, low cost and high strength have the inherent contradiction. Therefore, the dependent suspension system capable of actively adjusting the damping parameters is a practical requirement for the development of non-passenger vehicles such as trucks and special transport vehicles.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects in the prior art are overcome, and the vehicle magnetic suspension damping system is provided, so that the damping capacity of the vehicle can be actively adjusted.
The technical scheme adopted by the invention for solving the problems in the prior art is as follows:
the invention provides a vehicle magnetic suspension damping system, which comprises a damper arranged between a vehicle frame and an axle, wherein a plurality of magnetic suspension damping devices are also arranged between the vehicle frame and the axle;
the magnetic suspension damping device comprises two lever arms which are transversely arranged above an axle and are parallel to each other, two ends of each lever arm are respectively a hinged end and a magnetic suspension end, the hinged ends are hinged to a supporting column, the supporting column is vertically arranged on the axle, a magnetic suspension mechanism is arranged below the magnetic suspension end, the magnetic suspension mechanism comprises an upper magnet arranged at the bottom of each lever arm and a lower magnet arranged at the position of the axle right below the upper magnet, the upper magnet and the lower magnet are homopolarly opposite, a fulcrum mechanism is arranged above one side of each lever arm, which is far away from the magnetic suspension end, the top of each fulcrum mechanism is fixedly connected to the bottom of the frame, and the bottom of each fulcrum mechanism is movably connected with the corresponding lever arm;
the hinged end and the magnetic suspension end of the two lever arms are arranged in a crossed mode.
Preferably, the lever arm includes the base pole, the base pole is close to the one end fixedly connected with telescopic link of magnetic suspension mechanism, magnetic suspension mechanism still including articulate in the perpendicular spliced pole of the pars contractilis of telescopic link, upper portion magnet set up in the bottom of perpendicular spliced pole.
The center of mass of the lever arm is located on the side of the center of the lever arm away from the magnetic suspension mechanism.
Preferably, the bottom of perpendicular spliced pole is provided with the restraint slider, upper portion magnet set up in restraint slider bottom, the axle position that corresponds below the restraint slider upwards is provided with the sliding sleeve perpendicularly, set up on the sliding sleeve with the restraint spout of restraint slider adaptation, the restraint slider slide set up in the restraint spout, lower part magnet set up in the bottom of restraint spout.
Preferably, the lower magnet comprises a plurality of permanent magnets and electromagnets, and the upper magnet is a permanent magnet.
Preferably, the bottom of the supporting column is fixedly connected with a first lifting device, a lifting part of the first lifting device is fixedly connected with the bottom of the supporting column, and the bottom of the first lifting device is fixedly connected with the axle;
the bottom of restraint spout is fixed and is provided with second elevating gear, second elevating gear's lift portion top be provided with the installation slider of restraint spout adaptation, lower part magnet set up in on the installation slider, just the permanent magnet and the electro-magnet of lower part magnet wind respectively the central annular distribution of installation slider.
Preferably, the fulcrum mechanism including set up perpendicularly downwards in the fulcrum elevating gear of frame bottom, fulcrum elevating gear's lift portion end is provided with the torsion bar, the bottom of torsion bar is provided with universal bulb, spherical groove has been seted up on the base rod, spherical groove with universal bulb looks adaptation just universal bulb activity inlays and locates in the spherical groove.
Preferably, inlay on the base pole and be equipped with columniform and turn round the seat, turn round the seat and include outer sleeve, interior knob, rotation axis, the outer sleeve is fixed to be inlayed and is located on the base pole, the rotatory cover of interior knob is located in the outer sleeve, the pivot groove has been seted up on the outer sleeve bottom inner wall, the fixed rotation axis that is provided with in interior knob bottom, the rotation axis is inserted and is located the pivot inslot, the cover is equipped with the torsional spring on the rotation axis, the one end fixed connection of torsional spring in pivot tank bottom, other end fixed connection in interior knob bottom, spherical groove is seted up in interior knob top.
Preferably, a buffer sliding groove is formed in the tail end of the lifting part of the fulcrum lifting device, the twisting rod is inserted into the buffer sliding groove, and a buffer spring is arranged between the top of the twisting rod and the top wall of the buffer sliding groove.
Preferably, a friction groove is formed in the outer wall of the universal ball head, and a slow rebound memory material is covered on the inner wall of the spherical groove.
The invention also provides a vehicle active magnetic suspension damping method, which comprises the following steps:
the articulated end and the magnetic suspension end of the two lever arms are opposite left and right to ensure the balance of the frame, the space between the frame and the axle is divided into a rigid space at the upper part of the lever arm and a magnetic suspension damping space at the lower part of the lever arm by the lever arm and the fulcrum mechanism, the active adjustment of the damping capacity of the vehicle is realized by matching with the shock absorber, the active adjustment comprises the adjustment of the height ratio of the rigid space and the magnetic suspension damping space to realize the active adjustment of the damping stroke of the shock absorber, and the active adjustment of the elastic damping of the shock absorber is realized in a magnetic suspension mode;
the specific method for realizing the active adjustment of the elastic damping of the shock absorber in a magnetic suspension mode comprises the following steps:
a1: the magnetic poles of the lower magnet and the upper magnet oppositely generate repulsive force to form a non-contact spring and act on the magnetic suspension end of the lever arm, and the magnetic suspension end of the lever arm, the fulcrum mechanism and the hinged end of the lever arm form a lever relationship to amplify the action effect of the repulsive force borne by the magnetic suspension end;
a2: when the magnetic suspension end of the lever arm vibrates up and down, the upper magnet drives the constraint sliding block to move up and down in the constraint sliding groove, and further drives the telescopic part of the telescopic rod to stretch, so that the upper magnet and the lower magnet are vertically opposite to each other;
a3: the lower magnet comprises a plurality of permanent magnets and electromagnets, the permanent magnets are used for generating initial repulsive force, and the magnitude of the repulsive force between the upper magnet and the lower magnet is adjusted by adjusting the electrification number and the electrification current of the electromagnets;
a4: the lifting part of the second lifting device moves up and down to drive the lower magnet on the mounting slide block to move up and down so as to adjust the distance between the upper magnet and the lower magnet and further adjust the magnitude of repulsive force between the upper magnet and the lower magnet;
the specific steps of adjusting the height ratio of the rigid space to the magnetic suspension damping space comprise:
b1: adjusting the lifting height of the lifting part of the first lifting device to adjust the height of the supporting column, adjusting the height of the lifting part of the second lifting device to adjust the height of the lower magnet, and adjusting the height of the magnetic suspension end of the lever arm through repulsive force to further adjust the height of the lever arm;
b2: and adjusting the lifting height of a lifting part of the fulcrum lifting device so as to adjust the distance between the universal ball head and the frame.
Compared with the prior art, the invention has the following beneficial effects:
(1) the non-contact spring effect is realized through the upper magnets and the lower magnets with opposite polarities, and the mechanical abrasion of the traditional steel plate spring and the weakening of the damping effect caused by the mechanical abrasion are avoided.
(2) The design of the lever arm and the fulcrum mechanism enables the magnetic suspension end of the lever arm, the fulcrum mechanism and the hinged end of the lever arm to form a lever relationship, the action effect of the magnetic force of the magnetic suspension end is enlarged, the using amount of the magnetic blocks is reduced, and the cost is saved.
(3) The lower magnet is formed by the plurality of electromagnets and the permanent magnets which are distributed in an annular mode, so that the formation of initial magnetic force is met, the probability of collision between the upper magnet and the lower magnet is prevented or reduced, the magnetic field intensity of the upper magnet can be controlled by controlling the electrifying quantity of the electromagnets, and the active operability of the shock absorption capacity is improved.
(4) Through the polygonal slider and the polygonal spout of articulated telescopic link and vertical connection post and mutual adaptation each other, under the normal rotatory condition of keeping the lever arm hinged end, upper portion magnet and lower part magnet are just relative from top to bottom, have avoided because upper portion magnet and lower part magnet dislocation cause the waste of side magnetic force.
(5) The dynamic adjustment of the rigid space above the lever arm and the magnetic suspension space below the lever arm is realized through the first lifting device, the second lifting device and the fulcrum lifting device, the active operability of the damping capacity is enhanced, meanwhile, the height between the frame and the axle can be flexibly adjusted, and the wading capacity of the vehicle is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Figure 1 is a schematic overall structure of one embodiment of the present invention,
FIG. 2 is a schematic structural diagram of an embodiment of a magnetic suspension damping device according to the present invention,
figure 3 is an exploded view of an embodiment of the magnetic suspension mechanism of the present invention,
figure 4 is a cross-sectional view of an embodiment of the magnetic suspension mechanism of the present invention,
figure 5 is a cross-sectional view of a lever arm of one embodiment of the present invention,
fig. 6 is an enlarged view of a torque socket according to an embodiment of the present invention.
In the figure:
1. the vehicle comprises a vehicle frame, 2, an axle, 3, a shock absorber, 4, a support column, 5, a lever arm, 6, a magnetic suspension mechanism, 7, a fulcrum mechanism, 41, a first lifting device, 51, a base rod, 52, a twisting seat, 53, an expansion rod, 54, a hinge joint, 61, a vertical connecting column, 62, a constraint slider, 63, an upper magnet, 64, a sliding sleeve, 65, a lower magnet, 66, a second lifting device, 67, an installation slider, 71, a fulcrum lifting device, 72, a twisting rod, 521, an outer sleeve, 522, an internal rotating cylinder, 523, a rotating shaft, 641, a constraint chute, 711, a buffer spring, 721, a universal ball head, 5221 and a spherical groove.
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
As shown in fig. 1 to 6, the present invention provides a vehicle magnetic suspension shock absorption system, which includes a shock absorber 3 disposed between a vehicle frame 1 and a vehicle axle 2, and a plurality of magnetic suspension shock absorption devices disposed between the vehicle frame 1 and the vehicle axle 2.
The magnetic suspension damping device comprises two lever arms 5 which are transversely arranged above the axle 1 and are parallel to each other, two ends of each lever arm 5 are respectively a hinged end and a magnetic suspension end, the hinged ends are hinged to support columns 4, the support columns 4 are perpendicularly arranged on the axle 2, a magnetic suspension mechanism 6 is arranged below the magnetic suspension ends, the magnetic suspension mechanism 6 comprises an upper magnet 63 arranged at the bottom of each lever arm 5 and a lower magnet 65 arranged at the position of the axle 2 under the upper magnet 63, the upper magnet 63 and the lower magnet 65 are opposite in homopolar, a fulcrum mechanism 7 is arranged above one side, away from the magnetic suspension ends, of each lever arm 5, the top of each fulcrum mechanism 7 is fixedly connected to the bottom of the frame 1, and the bottom of each fulcrum mechanism 7 is movably connected with the lever arms 5. The hinged end and the magnetic suspension end of the two lever arms 5 are arranged in a left-right opposite staggered mode.
The magnetic suspension damping device is used for replacing a traditional steel sheet spring to perform active adjustable damping operation. The lower magnet 65 and the upper magnet 63 generate a repulsive force with their magnetic poles facing each other, thereby forming a non-contact spring and performing non-contact shock absorption processing on the shock between the vehicle frame 1 and the vehicle axle 2. The magnetic field repulsive force generated by the magnetic suspension mechanism acts on the magnetic suspension end of the lever arm 5, the fulcrum mechanism 7 and the hinged end of the lever arm 5 form a lever relationship, and balance between the vehicle body pressure transmitted to the lever arm 5 from the fulcrum mechanism 7 and the rotating moment of the magnetic force received by the magnetic suspension end is kept. The length of the lever arm 5 is L, the distance from the contact point of the fulcrum mechanism 7 and the lever arm 5 to the hinged end is L1, the magnetic force applied to the magnetic suspension end is F, the vehicle body pressure transmitted by the fulcrum mechanism 7 is F1, and the torque balance formula F1L 1(1) shows that the smaller the ratio of L1 to L, the smaller the magnetic force F required for torque balance with the vehicle body pressure F1 is, and since the fulcrum mechanism 7 is far away from the magnetic suspension end of the lever arm 5, L is far greater than L1, the size of the magnetic force F required is reduced, the usage amount of the upper magnet 65 and the lower magnet 63 is reduced, and the cost is saved.
When the automobile body shakes, the pressure of the lever arm 5 is changed by the fulcrum mechanism 7, the lever arm 5 rotates along the hinged end of the lever arm, the constraint sliding block 62 moves up and down along the constraint sliding groove 641 to drive the vertical connecting column 61 to move up and down, and then the telescopic part of the telescopic rod 53 generates tensile force or thrust along the radial direction of the lever arm 5, so that the telescopic length of the telescopic part is changed to ensure the rotation of the lever arm 5. The telescopic rod 53, the restraining slider 62 and the sliding sleeve 64 are used for ensuring that the upper magnet 63 and the lower magnet 65 are in positive vertical opposition, so that the magnetic effect is maximized.
The lever arm 5 further comprises two articulated joints 54 respectively arranged on the telescopic part of the telescopic rod 53 and one side of the base rod 51 far away from the telescopic rod 53, and the articulated joints 54 are respectively used for being articulated with the vertical connecting column 61 and the supporting column 4. The moment balance formula F L-F1L 1(1) ignores the factor of the self-weight of the lever arm 5, and in order to reduce the influence of the self-weight of the lever arm 5 on the rotation moment of the lever arm 5, the base rod 51, the telescopic rod 53 and the hinge 54 are made of a lightweight and rigid titanium alloy, and further, the mass of the lever arm 5 itself can be reduced and the center of mass of the lever arm 5 is far away from the side of the magnetic suspension mechanism 6 by reducing the diameter of the base rod 51 near the side of the magnetic suspension mechanism 6, or providing a cavity inside the base rod 51 near the side of the magnetic suspension mechanism 6.
The lower magnet 65 includes a plurality of permanent magnets and electromagnets, and the upper magnet 63 is a permanent magnet. Permanent magnet in the lower part magnet 65 be used for with upper portion magnet 63 produces initial magnetic force, prevents or reduces the probability of upper portion magnet and lower part magnet collision, a plurality of electro-magnets are used for through control the circular telegram quantity control lower part magnet 65's of electro-magnet magnetic field intensity has increased right magnetic suspension mechanism 6's operability has also avoided single electro-magnet damage to cause the upper portion magnet to be unable to use.
Preferably, the restricting slider 62, the vertical connecting column 61 and the sliding sleeve 64 form a sealed piston motion mechanism, and compressed air is compressed by the restricting slider 62 to form an air spring, so that the upper magnet 63 and the lower magnet 65 are prevented from colliding, and the damping effect of the magnetic suspension mechanism 6 is also increased. The restraint slider 62 is provided with an electromagnetic valve which penetrates through the restraint slider 62 and is used for controlling the sealing and ventilation of the piston motion mechanism so as to control the effectiveness and the failure of the air spring; an angle sensor is arranged at the top of the supporting column 4, the measuring end of the angle sensor is connected with the lever arm 5, the angle sensor is used for measuring the rotation amplitude of the lever arm 5, and when the angle sensor detects that the rotation amplitude of the lever arm 5 exceeds a preset value, the electromagnetic valve is closed, so that the air spring is effective.
The bottom of the support column 4 is fixedly connected with a first lifting device 41, the lifting part of the first lifting device 41 is fixedly connected with the bottom of the support column 4, and the bottom of the first lifting device 41 is fixedly connected with the axle 2.
The bottom of restraint spout 641 is fixed to be provided with second elevating gear 66, the lift portion top of second elevating gear 66 be provided with the installation slider 67 of restraint spout 641 adaptation, lower part magnet 65 set up in on the installation slider 67, just the permanent magnet and the electro-magnet of lower part magnet 65 wind respectively the central annular distribution of installation slider 67. The permanent magnets and electromagnets are spaced around the center of the mounting block 67 on the same circumference or evenly distributed on different circumferences.
The fulcrum mechanism 7 includes a fulcrum lifting device 71 vertically and downwardly disposed at the bottom of the frame 1, a torsion rod 72 is disposed at the end of a lifting portion of the fulcrum lifting device 71, a universal ball head 721 is disposed at the bottom of the torsion rod 72, a spherical groove 5221 is disposed on the base rod 51, the spherical groove 5221 is adapted to the universal ball head 721, and the universal ball head 721 is movably embedded in the spherical groove 5221. The ball joint 721 can rotate freely in the spherical groove 5221 to realize the movable connection between the fulcrum mechanism 7 and the lever arm 5, and the spherical groove 5221 is matched with the ball joint 721, namely the diameter of the top opening of the spherical groove 5221 is larger than that of the torsion rod 72 but smaller than that of the ball joint 721, so that the ball joint 721 can move in the spherical groove 5221 and can prevent the ball joint 721 from being detached from the spherical groove 5221.
The lift portion of first elevating gear 41 reciprocates in order to adjust the height of support column 4, and then the adjustment the height of the hinged end of lever arm 5, the lift portion of second elevating gear 66 reciprocates in order to adjust the height of lower part magnet 65, and then adjusts under the effect of magnetic force the height of upper portion magnet 63, and then the adjustment the height of the magnetic suspension end of lever arm 5, first elevating gear 41 and second elevating gear 66 synchronous motion can be in keeping the height of adjusting lever arm 5 under the unchangeable condition of magnetic field intensity between last magnet 63 and lower magnet 65. The lifting part of the fulcrum lifting device 71 moves up and down to drive the torsion rod 72 to move up and down, so that the distance between the frame 1 and the lever arm 5 is adjusted. The synchronous movement of the first lifting device 41, the second lifting device 66 and the fulcrum lifting device 71 can adjust the distance between the vehicle frame 1 and the vehicle axle 2, so as to adjust the elastic damping capacity of the whole magnetic suspension damping system and the wading capacity of the vehicle.
Inlay on the base pole 51 and be equipped with columniform wrench joint seat 52, wrench joint seat 52 includes outer sleeve 521, interior knob 522, rotation axis 523, outer sleeve 521 is fixed to be inlayed and is located on the base pole 51, the rotatory cover of interior knob 522 is located in the outer sleeve 521, the pivot groove has been seted up on the inner wall of outer sleeve 521 bottom, the fixed rotation axis 523 that is provided with in interior knob 522 bottom, rotation axis 523 is inserted and is located in the pivot inslot, the cover is equipped with the torsional spring on the rotation axis 523, the one end fixed connection of torsional spring in pivot tank bottom, other end fixed connection in interior knob 522 bottom, spherical groove 5221 is seted up in interior knob 522 top. The torsion seat 52 is used for buffering a transverse pulling force applied to the torsion rod 72 when the lever arm 5 is inclined, and when the lever arm 5 is inclined, the universal ball head 721 applies a force to the inner wall of the spherical groove 5221, the inner rotary cylinder 522 rotates in the outer sleeve 521, so as to drive the rotary shaft 523 to rotate, so that the torsion spring rotates to buffer the transverse pulling force applied to the torsion rod 72. At the same time, the torque socket 52 also serves to dampen lateral vibrations between the frame 1 and the axle 2.
The end of the lifting part of the fulcrum lifting device 71 is provided with a buffer sliding groove, the torsion rod 72 is inserted into the buffer sliding groove, and a buffer spring 711 is arranged between the top of the torsion rod 72 and the top wall of the buffer sliding groove. The buffer sliding groove and the buffer spring 711 are used for buffering the violent impact between the universal ball 721 of the torsion bar 72 and the spherical groove 5221 of the torsion seat 52 during vibration.
The outer wall of the universal ball head 721 is provided with a friction groove, and the inner wall of the spherical groove 5221 is covered with a slow rebound memory material. The slow rebound memory material is made of polyurethane, has the capacity of absorbing impact force, memory deformation and automatic shaping, is pressed by the universal ball head 721, fills the friction groove through the automatic shaping capacity of the friction groove, increases the friction force between the universal ball head 721 and the inner wall of the spherical groove 5221, converts the transverse pulling force borne by the torsion rod 72 into the rotation of the torsion spring better, buffers the pulling force between the torsion rod 72 and the torsion seat 52, and improves the damping capacity for the transverse vibration between the frame 1 and the axle 2.
The first lifting device 41, the second lifting device 66 and the fulcrum lifting device 71 are hydraulic lifting devices, the magnetic suspension damping device is electrically connected with the vehicle-mounted computer, and a user controls the magnetic suspension damping device to act through the vehicle-mounted computer.
The invention also provides a vehicle active magnetic suspension damping method, which comprises the following steps:
the hinged end and the magnetic suspension end of the two lever arms 5 are opposite left and right to ensure the balance of the frame 1, the lever arms 5 and the fulcrum mechanisms 7 divide the space between the frame 1 and the axle 2 into a rigid space at the upper part of the lever arms 5 and a magnetic suspension damping space at the lower part of the lever arms 5, and the active adjustment of the vehicle damping capacity is realized by matching the shock absorbers 3, wherein the active adjustment comprises the adjustment of the height ratio of the rigid space to the magnetic suspension damping space to realize the active adjustment of the damping stroke of the shock absorbers 3 and the active adjustment of the elastic damping of the shock absorbers 3 in a magnetic suspension mode;
the concrete method for realizing the active adjustment of the elastic damping of the shock absorber 3 by the magnetic suspension mode comprises the following steps:
a1: the magnetic poles of the lower magnet 65 and the upper magnet 63 generate repulsive force oppositely to form a non-contact spring, the non-contact spring acts on the magnetic suspension end of the lever arm 5, and the magnetic suspension end of the lever arm 5, the fulcrum mechanism 7 and the hinged end of the lever arm 5 form a lever relationship to amplify the action effect of the repulsive force borne by the magnetic suspension end;
a2: when the magnetic suspension end of the lever arm 5 vibrates vertically, the upper magnet 63 drives the constraint slider 62 to move vertically in the constraint chute 641, so as to drive the telescopic part of the telescopic rod 53 to extend and retract, so that the upper magnet 63 and the lower magnet 65 are vertically opposite to each other;
a3: the lower magnet 65 comprises a plurality of permanent magnets and electromagnets, the permanent magnets are used for generating initial repulsive force, and the magnitude of the repulsive force between the upper magnet 63 and the lower magnet 65 is adjusted by adjusting the electrification number and the electrification current of the electromagnets;
a4: the lifting part of the second lifting device 66 moves up and down to drive the lower magnet 65 on the mounting slider 67 to move up and down to adjust the distance between the upper magnet 63 and the lower magnet 65, and further adjust the size of the repulsive force between the upper magnet 63 and the lower magnet 65;
the specific steps of adjusting the height ratio of the rigid space to the magnetic suspension damping space comprise:
b1: adjusting the height of the lifting part of the first lifting device 41 to adjust the height of the support column 4, adjusting the height of the lifting part of the second lifting device 66 to adjust the height of the lower magnet 65, adjusting the height of the magnetic suspension end of the lever arm 5 through repulsive force, and further adjusting the height of the lever arm 5;
b2: the height of the lifting part of the fulcrum lifting device 71 is adjusted to adjust the distance between the universal ball 721 and the vehicle frame 1.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. The utility model provides a vehicle magnetic suspension shock mitigation system, is including setting up bumper shock absorber (3) between frame (1) and axle (2), its characterized in that: a plurality of magnetic suspension damping devices are also arranged between the frame (1) and the axle (2);
the magnetic suspension damping device comprises two lever arms (5) which are transversely arranged above an axle (2) and are parallel to each other, two ends of each lever arm (5) are respectively a hinged end and a magnetic suspension end, the hinged ends are hinged to support columns (4), the support columns (4) are vertically arranged on the axle (2), magnetic suspension mechanisms (6) are arranged below the magnetic suspension ends, each magnetic suspension mechanism (6) comprises an upper magnet (63) arranged at the bottom of each lever arm (5) and a lower magnet (65) arranged at the position of the axle (2) right below the upper magnet (63), the upper magnet (63) and the lower magnet (65) are opposite in homopolar, a fulcrum mechanism (7) is arranged above one side, far away from the magnetic suspension ends, of each lever arm (5), and the top of each fulcrum mechanism (7) is fixedly connected to the bottom of the vehicle frame (1), the bottom of the fulcrum mechanism (7) is movably connected with the lever arm (5);
the hinged end and the magnetic suspension end of the two lever arms (5) are arranged in a crossed manner.
2. The vehicle magnetic suspension shock absorption system according to claim 1, wherein:
the lever arm (5) comprises a base rod (51), one end, close to the magnetic suspension mechanism (6), of the base rod (51) is fixedly connected with a telescopic rod (53), the magnetic suspension mechanism (6) further comprises a vertical connecting column (61) hinged to a telescopic part of the telescopic rod (53), and the upper magnet (63) is arranged at the bottom of the vertical connecting column (61);
the mass center of the lever arm (5) is positioned on one side of the center of the lever arm (5) far away from the magnetic suspension mechanism.
3. A vehicle magnetic suspension shock absorption system according to claim 2, wherein:
the bottom of perpendicular spliced pole (61) is provided with restraint slider (62), upper portion magnet (63) set up in restraint slider (62) bottom, axle (2) position that restraint slider (62) below corresponds is provided with sliding sleeve (64) perpendicularly upwards, set up on sliding sleeve (64) with restraint spout (641) of restraint slider (62) adaptation, restraint slider (62) slide set up in restraint spout (641), lower part magnet (65) set up in the bottom of restraint spout (641).
4. A vehicle magnetic suspension damping system according to claim 3, wherein:
the lower magnet (65) comprises a plurality of permanent magnets and electromagnets, and the upper magnet (63) is a permanent magnet.
5. A vehicle magnetic suspension damping system according to claim 3, wherein:
the bottom of the supporting column (4) is fixedly connected with a first lifting device (41), the lifting part of the first lifting device (41) is fixedly connected with the bottom of the supporting column (4), and the bottom of the first lifting device (41) is fixedly connected with the axle (2);
the fixed second elevating gear (66) that is provided with in bottom of restraint spout (641), the lift portion top of second elevating gear (66) be provided with installation slider (67) of restraint spout (641) adaptation, lower part magnet (65) set up in on installation slider (67), just the permanent magnet and the electro-magnet of lower part magnet (65) wind respectively the central annular of installation slider (67) distributes.
6. The vehicle magnetic suspension shock absorbing system according to claim 5, wherein:
the supporting point mechanism (7) comprises a supporting point lifting device (71) vertically arranged at the bottom of the frame (1) downwards, a torsion rod (72) is arranged at the tail end of a lifting part of the supporting point lifting device (71), a universal ball head (721) is arranged at the bottom of the torsion rod (72), a spherical groove (5221) is formed in the base rod (51), the spherical groove (5221) is matched with the universal ball head (721) in a matched mode, and the universal ball head (721) is movably embedded in the spherical groove (5221).
7. The vehicle magnetic suspension shock absorbing system according to claim 6, wherein:
inlay on base pole (51) and be equipped with columniform wrench joint seat (52), wrench joint seat (52) include outer sleeve (521), interior knob (522), rotation axis (523), outer sleeve (521) are fixed to be inlayed and are located on base pole (51), interior knob (522) is rotatory to be overlapped and is located in outer sleeve (521), the pivot groove has been seted up on outer sleeve (521) bottom inner wall, interior knob (522) bottom is fixed and is provided with rotation axis (523), rotation axis (523) are inserted and are located the pivot inslot, the cover is equipped with the torsional spring on rotation axis (523), the one end fixed connection of torsional spring in pivot tank bottom portion, other end fixed connection in interior knob (522) bottom, spherical groove (5221) are seted up in interior knob (522) top.
8. The vehicle magnetic suspension shock absorbing system according to claim 7, wherein:
the tail end of the lifting part of the fulcrum lifting device (71) is provided with a buffer sliding groove, the torsion rod (72) is inserted into the buffer sliding groove, and a buffer spring (711) is arranged between the top of the torsion rod (72) and the top wall of the buffer sliding groove.
9. The vehicle magnetic suspension shock absorbing system according to claim 7, wherein:
the universal ball head (721) is provided with a friction groove on the outer wall, and the inner wall of the spherical groove (5221) is covered with a slow rebound memory material.
10. An active magnetic suspension shock absorption method for a vehicle is characterized by comprising the following steps:
the hinged end and the magnetic suspension end of the two lever arms (5) are opposite left and right to ensure the balance of the frame (1), the lever arms (5) and the fulcrum mechanisms (7) divide the space between the frame (1) and the axle (2) into a rigid space at the upper part of the lever arms (5) and a magnetic suspension damping space at the lower part of the lever arms (5), and the rigid space and the magnetic suspension damping space are matched with the shock absorber (3) to realize the active adjustment of the shock absorption capacity of the vehicle, wherein the active adjustment comprises the adjustment of the height ratio of the rigid space to the magnetic suspension damping space to realize the active adjustment of the shock absorption stroke of the shock absorber (3), and the active adjustment of the elastic damping of the shock absorber (3) is realized in a magnetic suspension mode;
the specific method for realizing the active adjustment of the elastic damping of the shock absorber (3) by the magnetic suspension mode comprises the following steps:
a1: the magnetic poles of the lower magnet (65) and the upper magnet (63) generate repulsive force oppositely to form a non-contact spring, the non-contact spring acts on the magnetic suspension end of the lever arm (5), and the magnetic suspension end of the lever arm (5), the fulcrum mechanism (7) and the hinged end of the lever arm (5) form a lever relationship to amplify the action effect of the repulsive force borne by the magnetic suspension end;
a2: when the magnetic suspension end of the lever arm (5) vibrates up and down, the upper magnet (63) drives the constraint sliding block (62) to move up and down in the constraint sliding groove (641), and further drives the telescopic part of the telescopic rod (53) to stretch, so that the upper magnet (63) and the lower magnet (65) are vertically opposite;
a3: the lower magnet (65) comprises a plurality of permanent magnets and electromagnets, the permanent magnets are used for generating initial repulsive force, and the magnitude of the repulsive force between the upper magnet (63) and the lower magnet (65) is adjusted by adjusting the electrification number and the electrification current of the electromagnets;
a4: the lifting part of the second lifting device (66) moves up and down to drive the lower magnet (65) on the mounting slide block (67) to move up and down so as to adjust the distance between the upper magnet (63) and the lower magnet (65), and further adjust the size of the repulsive force between the upper magnet (63) and the lower magnet (65);
the specific steps of adjusting the height ratio of the rigid space to the magnetic suspension damping space comprise:
b1: adjusting the lifting height of the lifting part of the first lifting device (41) to adjust the height of the supporting column (4), adjusting the height of the lifting part of the second lifting device (66) to adjust the height of the lower magnet (65), adjusting the height of the magnetic suspension end of the lever arm (5) through repulsive force, and further adjusting the height of the lever arm (5);
b2: and adjusting the lifting height of a lifting part of the fulcrum lifting device (71) so as to adjust the distance between the universal ball head (721) and the frame (1).
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| CN113085466B (en) | 2022-05-27 |
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