CN113280071A - Self-energy-feeding automobile suspension damper - Google Patents
Self-energy-feeding automobile suspension damper Download PDFInfo
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- CN113280071A CN113280071A CN202110381298.5A CN202110381298A CN113280071A CN 113280071 A CN113280071 A CN 113280071A CN 202110381298 A CN202110381298 A CN 202110381298A CN 113280071 A CN113280071 A CN 113280071A
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- 239000000725 suspension Substances 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 38
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 23
- 229910052753 mercury Inorganic materials 0.000 claims description 23
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- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/08—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for recovering energy derived from swinging, rolling, pitching or like movements, e.g. from the vibrations of a machine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/52—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics in case of change of temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
- F16F9/537—Magnetorheological [MR] fluid dampers specially adapted valves therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a self-energy-feeding automobile suspension damper which comprises a connector, a sleeve and an outer cylinder body, wherein magnetorheological fluid and a nut assembly which can expand with heat and contract with cold at least partially in the radial direction of the outer cylinder body are arranged in the outer cylinder body, the connector is connected with the nut assembly through the sleeve, the damper further comprises a generator and a reversing transmission mechanism for converting reciprocating motion of the nut assembly along the axial direction of the outer cylinder body into power for driving the generator to generate power, and the generator is electrically connected with an automobile battery. The invention can realize the adjustment of the damping force and improve the functions of the smoothness and the operation stability of the vehicle. Meanwhile, the vibration energy can be converted into electric energy for vibration energy recovery.
Description
Technical Field
The invention relates to the technical field of automobile suspensions, in particular to a self-energy-feeding automobile suspension damper.
Background
At present, automobiles become essential travel tools in life of people, great convenience is brought to life of people, but due to aggravation of exhaust emission, new energy automobile technology becomes the next generation automobile technology for replacing traditional gasoline internal combustion engine automobiles. The important problem restricting the development of new energy automobiles at present is the energy storage problem, and the development trend of the prior art shows that the storage battery energy storage technology is difficult to have a great breakthrough, so if the energy consumed by the automobiles can be effectively recovered and managed, the energy utilization rate of the automobiles can be effectively improved, and the energy storage problem of new energy and automobiles can be improved.
The suspension is an important component of an automobile, and the traditional passive suspension structure comprises an elastic element, a guide mechanism, a shock absorber and the like, so that the influence on the operation stability and smoothness of the automobile is great. According to the study of foreign environmental protection mechanisms on the energy flow of the vehicle, the energy consumed by the vehicle idling and the finished vehicle shock absorber accounts for 17.2% of the total energy of the finished vehicle, and the energy utilization rate is reduced. However, at present, people have higher and higher requirements on the safety and the comfort of automobiles, and the traditional automobiles basically adopt a passive suspension system, so that the passive suspension system cannot adapt to the change of the running condition of the automobile and the external excitation, and the further improvement of the performance of the automobile is greatly restricted. Therefore, in recent years, people pay more attention to the research on the advanced suspension system, and although the semi-active suspension can only change one of the rigidity and the damping of the suspension system, compared with the active suspension, the semi-active suspension has the advantages of small energy consumption, simple structure and performance similar to that of the active suspension, and is the main research and application direction of the current advanced suspension system. If the energy dissipated in the traditional shock absorber can be recycled by adopting the semi-active suspension, the energy dissipation problem of the traditional passive suspension can be effectively solved, and the energy utilization rate of the automobile is improved. The smoothness and the operation stability of the automobile can be improved by semi-active control of the actuator, so that the semi-active suspension and the energy recovery system thereof become the main research direction of the suspension.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art. Therefore, the invention provides a self-energy-feeding automobile suspension damper, aiming at realizing the adjustability of the damping force of a suspension and simultaneously recovering energy.
Based on the purpose, the invention provides a self-energy-feeding automobile suspension damper, which comprises a connector, a sleeve and an outer cylinder body, wherein magnetorheological fluid and a nut assembly which can expand with heat and contract with cold at least partially in the radial direction of the outer cylinder body are arranged in the outer cylinder body, the connector is connected with the nut assembly through the sleeve, the damper also comprises a generator and a reversing transmission mechanism for converting the reciprocating motion of the nut assembly along the axial direction of the outer cylinder body into power for driving the generator to generate power and rotate, and the generator is electrically connected with an automobile battery.
The reversing transmission mechanism comprises a screw rod, a gear box and a gear transmission assembly arranged in the gear box, the outer cylinder body is arranged on the gear box, the nut assembly is in transmission connection with the input end of the gear transmission assembly through the screw rod, and the output end of the gear transmission assembly is connected with a motor shaft of the generator.
The gear transmission assembly comprises an input shaft gear, a transition shaft, a first one-way bearing, a transition gear, an output shaft, a second one-way bearing, an output shaft gear, a reversing shaft, a first gear arranged on the reversing shaft, a second gear arranged on the output shaft and a third gear arranged on the transition shaft, wherein the output shaft, the reversing shaft, the transition shaft and the lead screw are arranged in parallel, the input shaft gear is arranged on the output end of the lead screw, the transition gear is arranged on the transition shaft through the first one-way bearing, the output shaft gear is arranged on the output shaft through the second one-way bearing, the output shaft is connected with a motor shaft of a generator through a coupler, the input shaft gear and the output shaft gear are meshed with the transition gear, and the second gear and the third gear are meshed with the first gear.
The number of teeth of the first gear, the second gear and the third gear is the same, the number of teeth of the output shaft is greater than that of the first gear, the number of teeth of the transition gear is greater than that of the output shaft, and the number of teeth of the input shaft gear is greater than that of the transition gear.
The nut assembly comprises a nut connecting section, a nut end and a thermal expansion ring, wherein the nut connecting section is coaxially arranged with the screw rod, the nut end is sleeved on the screw rod, the nut end is arranged at two ends of the nut connecting section, the thermal expansion ring is arranged in the nut end, the nut end is formed by enclosing a plurality of split blocks, the adjacent split blocks are connected through a connecting piece, and the connecting piece and the thermal expansion ring are made of materials with thermal expansion and cold contraction.
The two ends of the nut connecting section are provided with limiting grooves, the nut ends are sleeved on the limiting grooves through thermal expansion rings, and the two nut ends are connected through a retainer.
The split blocks are a plurality of fan-shaped blocks with the same shape and size, the retainer comprises a plurality of connecting rods connected with the fan-shaped blocks corresponding to the ends of the two nuts, and the connecting rods are parallel to the nut connecting section.
The damper is characterized in that a coil connected with an automobile battery is sleeved on the nut component, a gap is reserved between the coil and the inner wall of the outer cylinder body, the damper further comprises a slide wire rheostat arranged on the outer side wall of the outer cylinder body and a thermal inductance adjusting mechanism which is in contact with the outer cylinder body and used for adjusting the contact position of the slide wire rheostat through heating, and the slide wire rheostat is connected with the coil in series.
The thermal inductance adjusting mechanism comprises a conductive connecting rod, a mercury pipe column, a piston and a return spring, wherein the piston and the return spring are arranged in the mercury pipe column, the inner end face of the piston is connected with the bottom face of the mercury pipe column through the return spring, the outer end face of the piston is connected with a wiring point for adjusting the contact position of the slide-wire rheostat through the conductive connecting rod, and the mercury pipe column enables mercury to drive the piston to move through heating so as to adjust the resistance value of the slide-wire rheostat.
The nut component is provided with an annular groove for sleeving the coil.
The outer diameter of the nut end is larger than that of the nut connecting section, so that the nut connecting section and the nut ends at two ends form the annular groove.
The connecting end of the sleeve and the outer cylinder body is provided with a blocking cover, and a sealing ring which is hermetically sleeved with the sleeve is arranged in the blocking cover.
The connecting end of the sleeve and the nut end is provided with a sunk groove hole, and the sleeve and the nut end are tightly connected through the matching of a fastener and the sunk groove hole.
The screw rod is provided with a limiting bulge used for limiting the nut.
The invention has the beneficial effects that:
1. according to the invention, as the working temperature of the nut component rises, the thermal expansion material in the nut component expands radially, so that the outer diameter of the nut component is increased, the gap channel between the nut component and the outer cylinder body is further reduced, the sectional area of the magnetorheological fluid channel is reduced, and the damping force of the magnetorheological fluid flowing through the channel is improved; when the temperature is reduced, due to the expansion and contraction characteristics, the nut assembly is gradually restored to the original state, so that the magnetorheological fluid channel is restored to the original position, and the damping force is adjusted through the structural arrangement, so that the functions of the smoothness and the operation stability of the vehicle are improved.
2. The connecting head is connected with the nut component through the sleeve, when an uneven road impacts the wheel, the vertical vibration of the wheel can drive the connecting head to vertically vibrate, the nut component can also vertically displace in the outer cylinder body, and then the screw rod is driven to rotate, so that an input shaft gear on an output end (serving as an input shaft) of the screw rod synchronously rotates along with the screw rod, and the input shaft gear drives the whole speed-increasing reversing gear box to move. Through the effect of the coupler, the output shaft of the speed-increasing reversing gear box and the motor shaft of the direct current generator synchronously rotate, and at the moment, the direct current generator converts vibration energy into electric energy for vibration energy recovery.
3. According to the invention, the elongated mercury column is arranged on the outer cylinder body, the mercury liquid level rises along with the rise of the temperature, the conductive connecting rod is connected with the external slide rheostat, and the higher the mercury liquid level is, the smaller the resistance value of the slide rheostat is. The slide wire rheostat is connected with the coil in series, the resistance of the coil is reduced, the current is increased, the generated magnetic field intensity is increased according to the Faraday electromagnetic induction principle, and the damping force of the magnetorheological fluid is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic view of the gear assembly of the present invention;
FIG. 3 is a front view of the gear assembly of the present invention;
FIG. 4 is a schematic view of the nut assembly of the present invention;
FIG. 5 is a cross-sectional view at the nut assembly of the present invention;
FIG. 6 is a schematic structural view of example 2 of the present invention;
FIG. 7 is a partial sectional view of embodiment 2 of the present invention;
fig. 8 is a schematic diagram of a damping force adjusting circuit according to embodiment 2 of the present invention.
Labeled as:
1. a connector; 2. a sleeve; 3. an outer cylinder body; 4. a generator; 5. a nut assembly; 51. a nut connection section; 52. a nut end; 521. splitting the blocks; 522. a connecting member; 53. a thermal expansion ring; 54. a connecting rod; 6. magnetorheological fluid; 7. a slide rheostat; 8. a coil; 9. a screw rod; 10. a gear case; 11. an input shaft gear; 12. a ball bearing; 13. an input shaft; 14. a magnetorheological fluid flow channel; 15. a transition shaft; 16. a needle bearing; 17. a first one-way bearing; 18. a transition gear; 19. an output shaft; 20. a second one-way bearing; 21. an output shaft gear; 22. a reversing shaft; 23. a first gear; 24. a second gear; 25. a third gear; 26. a coupling; 27. a seal ring; 28. blocking the cover; 29. a conductive connecting rod; 30. a negative terminal point; 31. a piston; 32. mercury level; 33. a return spring; 34. and a positive terminal.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It is to be noted that technical terms or scientific terms used in the embodiments of the present invention should have the ordinary meanings as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Example 1
As shown in fig. 1 to 5, the invention relates to a self-energy-feeding automobile suspension damper, which comprises a connector 1, a sleeve 2 and an outer cylinder body 3, wherein magnetorheological fluid 6 and a nut component 5 which can expand with heat and contract with cold at least partially are arranged in the outer cylinder body 3 in the radial direction, the connector 1 is connected with the nut component 5 through the sleeve 2, the damper further comprises a generator 4 and a reversing transmission mechanism which is used for converting the reciprocating motion of the nut component 5 along the axial direction of the outer cylinder body 3 into power generation and rotation of the generator 4, and the generator 4 is electrically connected with an automobile battery. Because the nut component has the characteristics of expansion with heat and contraction with cold, the gap channel between the nut component and the outer cylinder body is further adjusted, the adjustment of the damping force is realized, and the functions of the smoothness and the operation stability of the vehicle are improved. The mechanical energy of the up-and-down vibration is transmitted to the generator through the reversing transmission mechanism, and then is converted into electric energy for energy recovery.
As shown in fig. 1, as a preferred structural layout form, a plug 28 is arranged at the connection end of the sleeve 2 and the outer cylinder 3, and a sealing ring 27 for sealing and sleeving the sleeve 2 is arranged in the plug 28, so that the sealing connection effect is improved. The connecting end of the sleeve 2 and the nut 5 is provided with a sunk groove hole, the sleeve 2 and the nut component are tightly connected through the matching of a fastener and the sunk groove hole, and the fastener can adopt a fastening bolt. The screw rod 9 is preferably provided with a limiting bulge for limiting the nut 5, so that the nut is prevented from impacting the outer cylinder body.
As shown in fig. 2 and fig. 3, in this embodiment, the reversing transmission mechanism includes a screw rod 9, a gear box 10 and a gear transmission assembly disposed in the gear box 10, the outer cylinder 3 is disposed on the gear box 10, the nut assembly 5 is in transmission connection with an input end of the gear transmission assembly through the screw rod 9, and an output end of the gear transmission assembly is connected with a motor shaft of the generator 4. During the setting, lead screw and nut component screw-thread fit are connected, and the output of lead screw passes outer cylinder body and gear box and is connected with gear drive assembly's input, is provided with sealed bearing in the bottom of outer cylinder body, is convenient for with the assembly connection of lead screw, avoid magnetorheological suspensions to spill. The output end of the screw rod is used as an input shaft 13 of the gear transmission assembly, when the nut assembly reciprocates along the axial direction of the outer cylinder body (namely along the axial direction of the screw rod), the screw rod is driven to rotate forwards and backwards, and then the gear transmission assembly is driven to transmit, so that the generator generates electricity to recover energy.
The gear transmission assembly can be integrally arranged in the existing structure of the outer cylinder body in the axial direction, and the existing structural layout can lead to the increase of the overall length of the damper and is difficult to use in the limited assembly space due to the fact that the space for actually installing the damper is small.
As a preferred structural layout form of the present embodiment, as shown in fig. 2 and 4, the gear transmission assembly includes an input shaft gear 11, a transition shaft 15, a first one-way bearing 17, a transition gear 18, an output shaft 19, a second one-way bearing 20, an output shaft gear 21, a reversing shaft 22, a first gear 23 disposed on the reversing shaft 22, a second gear 24 disposed on the output shaft 19, and a third gear 25 disposed on the transition shaft 15, the output shaft 19, the reversing shaft 22, the transition shaft 15, and the lead screw 9 are arranged in parallel, the input shaft gear 11 is disposed on the output end of the lead screw 9, the transition gear 18 is mounted on the transition shaft 15 through the first one-way bearing 17, the output shaft gear 21 is mounted on the output shaft 19 through the second one-way bearing 20, the output shaft 19 is connected with the motor shaft of the generator 4 through a coupler 26, both the input shaft gear 11 and the output shaft gear 23 are connected with the transition gear 18 in a meshing manner, the second gear 24 and the third gear 25 are meshed with the first gear 23. During installation, the output end (input shaft) of the screw rod is installed in the gear box through the ball bearing 12, the transition shaft is installed in the gear box through the needle bearing, and the reversing shaft and the transition shaft are also assembled in the gear box. The generator may be fixed on an outer side wall of the outer cylinder body.
In order to achieve a good speed increasing effect, the number of teeth of the first gear 23, the second gear 24 and the third gear 25 is the same, the number of teeth of the output shaft gear 21 is greater than that of the first gear 23, the number of teeth of the transition gear 18 is greater than that of the output shaft gear 19, and the number of teeth of the input shaft gear 11 is greater than that of the transition gear 18. In the specific setting, for example, the number of the teeth of the first gear, the second gear and the third gear is set to thirty, the number of the teeth of the output shaft is set to forty, the number of the teeth of the transition gear is set to fifty, and the number of the teeth of the input shaft is set to eighty, so that the two-time speed-increasing effect is realized.
The principle of the speed increasing gear box is as follows: if the relative motion direction of the gear and the shaft is anticlockwise rotation, the one-way bearing can rotate freely, and if the relative motion direction is clockwise rotation, the one-way bearing is locked, so that the speed change reversing gear box has the functions of increasing the rotating speed and changing the bidirectional rotation into the one-way rotation. When the damper is installed, the connector is positioned at the upper part, and the gear box is positioned at the lower part. The following separate extension and compression strokes are described in detail:
when the self-energy-feeding automobile suspension damper is in an extending stroke, the connector and the nut both move downwards at the moment, the input shaft 13 and the input shaft gear 11 rotate clockwise, the input shaft gear 11 is meshed with the transition gear 18, so the transition gear 18 rotates anticlockwise, the first one-way bearing 17 can rotate freely at the moment, the transition shaft 15 does not transmit power, the power is transmitted to the output shaft gear 21 through the transition gear 18, the output shaft gear 21 rotates clockwise, the second one-way bearing 20 is locked at the moment, so the output shaft gear 21 drives the output shaft 19 to rotate clockwise, and the motor shaft also rotates clockwise under the action of the coupler 26.
When the self-energy-feeding automobile suspension damper is in a compression stroke, the connector and the nut both move upwards at the moment, the input shaft 13 and the input shaft gear 11 rotate anticlockwise, the input shaft gear 11 is meshed with the transition gear 18, so that the transition gear 18 rotates clockwise, the first one-way bearing 17 is locked at the moment, so that the third gear 25 also rotates clockwise, the third gear 25 transmits power to the second gear 24 and the output shaft 19 through the reversing shaft 22 and the first gear 23, the second gear 24 and the output shaft 19 rotate clockwise at the moment, and the motor shaft also rotates clockwise under the action of the coupler 26.
Through the arrangement of the transmission gear assembly, the nut assembly formed by vibration moves up and down, rotation in the same direction can be realized at the motor shaft of the generator, and the generator can convert vibration energy into electric energy conveniently, and then the electric energy is recycled to an automobile battery.
In this embodiment, as shown in fig. 4 and 5, the nut assembly 5 includes a nut connecting section 51 coaxially disposed with the lead screw 9 and externally sleeved on the lead screw 9, nut ends 52 disposed at two ends of the nut connecting section 51, and a thermal expansion ring 53 disposed in the nut end 52, the nut end 52 is formed by enclosing a plurality of split blocks 521, and adjacent split blocks 521 are connected by a connecting member 522, and the connecting member 522 and the thermal expansion ring 53 are both made of materials with thermal expansion and cold contraction. For example, the connecting piece and the thermal expansion ring are both made of rubber materials which can expand with heat and contract with cold. The split blocks are connected through connecting pieces made of rubber materials to form annular nut ends.
In order to facilitate the limiting of the nut end, the two ends of the nut connecting section 51 are provided with limiting grooves, the nut end is sleeved on the limiting grooves through a thermal expansion ring 53, and the two nut ends are connected through a retainer. The limiting groove can be a stepped groove, the nut end is assembled on the limiting groove in an interference mode through the thermal expansion ring, and the phenomenon that the nut end is separated from the nut connecting section in the process that the connector drives the nut assembly to move back and forth through the sleeve is avoided through the arrangement of the retainer and the limiting groove. In order to further improve the limiting effect, external threads can be arranged in the limiting grooves at the two ends of the nut connecting section, and the thermal expansion ring is arranged in internal threads matched with the external threads in the limiting grooves.
In a preferred arrangement, the plurality of split blocks 521 are a plurality of segments of the same shape and size, the retainer includes a plurality of links 54 connected to the segments corresponding to the ends of the two nuts, and the plurality of links 54 are parallel to the nut connecting section 51. Through the structure, the expansion stress is uniform, a good limiting effect is achieved during reciprocating motion, and the fan-shaped blocks are prevented from being separated. When the sleeve is connected, a sunk groove hole is particularly formed in a sector block in the end head of the nut connected with the sleeve, and the sleeve 2 is tightly connected with the nut component through the matching of a fastening bolt and the sunk groove hole.
When the split type nut assembly is used in the concrete implementation, the nut end is composed of six fan-shaped blocks, and each fan-shaped block is connected through rubber injection. A circular thermal expansion ring is arranged between the nut connecting section and the fan-shaped blocks, and the thermal expansion ring expands radially along with the rise of the working temperature to push the six fan-shaped blocks to expand radially, so that the gap between the six fan-shaped blocks and the outer cylinder body is reduced, and the damping force of the magnetorheological fluid is larger when the magnetorheological fluid passes through the six fan-shaped blocks. When the temperature is reduced, the sector is restored to the original state due to the rebound action of the rubber.
The damper is structurally arranged, so that the suspension can be in a passive energy feeding mode.
Passive energy feedback mode: because the connector passes through the sleeve pipe and links to each other with the nut, when uneven road surface produced the impact to the wheel, the vertical vibration of wheel can drive the connector and vibrate from top to bottom, and nut assembly also can follow upper and lower displacement in the cylinder body, and then drives lead screw rotary motion for input shaft gear on the lead screw output (as the input shaft) rotates along with the lead screw is synchronous, and the input shaft gear drives whole speed-increasing reversing gear box motion. Through the effect of the coupler, the output shaft of the speed-increasing reversing gear box and the motor shaft of the direct current generator synchronously rotate, and at the moment, the direct current generator converts vibration energy into electric energy for vibration energy recovery.
Example 2
The present embodiment is different from embodiment 1 in that, as shown in fig. 6-8, the nut assembly 5 is sleeved with a coil 8 connected with a vehicle battery, and a gap is formed between the coil 8 and the inner wall of the outer cylinder 3, the damper further includes a rheostat 7 disposed on the outer side wall of the outer cylinder 3 and a thermal adjusting mechanism contacting the outer cylinder 3 to thermally adjust the contact position of the rheostat 7, and the rheostat 7 is connected in series with the coil 8.
The heat sensing adjusting mechanism comprises a conductive connecting rod 29, a mercury column, a piston 31 and a return spring 33, wherein the piston 31 and the return spring 33 are arranged in the mercury column, the inner end face of the piston 31 is connected with the bottom face of the mercury column through the return spring 33, the outer end face of the piston 31 is connected with a wiring point for adjusting the contact position of the slide rheostat 7 through the conductive connecting rod 29, and the mercury column enables mercury to drive the piston 31 to move through heating so as to adjust the resistance value of the slide rheostat 7. By arranging an elongated mercury column on the outer cylinder, the mercury level 32 rises with increasing temperature and is connected to an external slide rheostat via a conductive connecting rod 29, the higher the mercury level, the lower the slide rheostat resistance. The slide wire rheostat is connected with the coil in series, the resistance of the coil is reduced, the current is increased, the generated magnetic field intensity is increased according to the Faraday electromagnetic induction principle, and the damping force of the magnetorheological fluid is increased.
In order to facilitate the mounting of the coil, the nut component 5 is provided with an annular groove for sleeving the coil 8. A gap is provided between the coil 8 and the inner wall of the outer cylinder 3. The gap between the coil and the inner wall of the outer cylinder body forms a magnetorheological fluid flow channel 14. The damping force is adjustable by controlling the current by utilizing the material characteristic that the flow rate of the magnetorheological fluid is adjustable under the action of a magnetic field. In the specific setting, the outer diameter of the nut end is larger than that of the nut connecting section 51, so that the nut connecting section 51 and the nut ends at the two ends form the annular groove.
The damper is structurally arranged, so that the suspension can be in two working modes, namely a passive energy feedback mode and a semi-active vibration reduction mode. The passive energy feeding mode is as in embodiment 1.
Semi-active damping mode: the electric energy provided by the direct current generator is stored in the automobile battery, and the battery is connected with the nut coil. The slide rheostat plays a role in adjusting the resistance by utilizing the stroke of up-and-down movement through the temperature change of the mercury pipe column, the size of the resistance determines the size of magnetic field force generated by coil current, and the resistance for increasing the magnetorheological fluid to pass through is increased to realize the adjustment of the damping force.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
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| CN202110381298.5A CN113280071A (en) | 2021-04-09 | 2021-04-09 | Self-energy-feeding automobile suspension damper |
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| CN114810926A (en) * | 2022-05-26 | 2022-07-29 | 柴璐 | Self-energy-feeding automobile suspension damper |
| WO2022254374A1 (en) * | 2021-06-03 | 2022-12-08 | Ree Automotive Ltd. | Automotive suspension assemblies |
| CN117705443A (en) * | 2024-02-05 | 2024-03-15 | 四川众能传动科技有限公司 | New energy locomotive main drive system test platform |
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