CN112747063A - Vibration damper, energy conversion device and vehicle - Google Patents
Vibration damper, energy conversion device and vehicle Download PDFInfo
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- CN112747063A CN112747063A CN201911054862.1A CN201911054862A CN112747063A CN 112747063 A CN112747063 A CN 112747063A CN 201911054862 A CN201911054862 A CN 201911054862A CN 112747063 A CN112747063 A CN 112747063A
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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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
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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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
- F16F9/341—Special valve constructions; Shape or construction of throttling passages comprising noise-reducing or like features, e.g. screens
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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
- F16F9/54—Arrangements for attachment
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a vibration damper which comprises a piston cylinder, a piston rod, an oil inlet pipe, an oil outlet pipe and an oil tank, wherein the piston cylinder is connected with a vehicle body or a vehicle frame, one end of the piston rod slides in the piston cylinder in a reciprocating mode, the other end of the piston rod is connected with a suspension, the piston cylinder is respectively connected with the oil inlet pipe and the oil outlet pipe, the oil outlet pipe is communicated with an energy conversion device, and the oil inlet pipe and the energy conversion device are respectively communicated with the oil tank. According to the vibration damper provided by the embodiment of the invention, no hydraulic cylinder is additionally arranged, and under the condition that the weight of the whole vehicle is not increased and the energy consumption of the whole vehicle is increased, vibration damping and recycling of vibration energy of the vehicle can be simultaneously realized, so that the vibration damping performance of the whole vehicle is improved and the utilization rate of the energy is increased. The invention further provides an energy conversion device and a vehicle.
Description
Technical Field
The invention relates to a vibration damping device, an energy conversion device and a vehicle.
Background
The existing vibration absorber moves up and down along with the vibration of the road surface, and converts the energy of the vibration of the whole vehicle caused by the road surface into elastic potential and gradually consumes the elastic potential. The vibration energy received by the buffer body of the shock absorber is not fully utilized, the performance of the buffer force of the shock absorber can be attenuated after the shock absorber works for a long time, the part near the cut-off point of the curve of the buffer force received by the shock absorber cannot be in smooth transition, the buffer body and the piston rod generate friction to generate abnormal sound, the curve of the buffer force received by the shock absorber can only be adjusted through the material density and the structure shape, and the adjustment range of the shock absorber is limited.
The prior art discloses an energy recovery device comprising a piston cylinder connected to the unsprung mass of a vehicle, a piston rod connected to the sprung mass of the vehicle, the energy of the vibrations being converted into hydraulic energy by the relative movement of the piston rod and the piston cylinder. The prior art also discloses an energy recovery device, wherein a piston rod moves relative to a piston cylinder along with the vibration of a vehicle, a coil is wound on the piston rod, a magnetic field is arranged on the inner wall of the piston cylinder, and the vibration energy is converted into electric energy through the relative motion of the piston rod and the piston cylinder. The two structures need to be specially provided with hydraulic cylinders for energy recovery, so that the weight of the whole vehicle and the energy consumption of the whole vehicle are increased, and the dynamic property and the economical efficiency are poor. The two structures increase a new transmission path of the buffering force, the smoothness of the automobile can be influenced, and the shock absorber of the original vehicle still consumes part or most of energy, so that the energy recovered by the energy recovery device is smaller.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the art described above. To this end, a first object of the invention is to propose a damping device that simultaneously achieves damping and recovery of the vibrational energy of the vehicle.
A second object of the invention is to propose a damping device.
A third object of the present invention is to provide an energy conversion device.
A fourth object of the invention is to propose a vehicle.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a vibration damping device, which includes a piston cylinder, a piston rod, an oil inlet pipe, an oil outlet pipe, and an oil tank, wherein the piston cylinder is connected to a vehicle body or a vehicle frame, one end of the piston rod slides in the piston cylinder in a reciprocating manner, the other end of the piston rod is connected to a suspension, the piston cylinder is respectively connected to the oil inlet pipe and the oil outlet pipe, the oil outlet pipe is communicated with an energy conversion device, and the oil inlet pipe and the energy conversion device are respectively communicated with the oil tank.
According to the vibration damper provided by the embodiment of the invention, no hydraulic cylinder is additionally arranged, and under the condition that the weight of the whole vehicle is not increased and the energy consumption of the whole vehicle is increased, vibration damping and recycling of vibration energy of the vehicle can be simultaneously realized, so that the vibration damping performance of the whole vehicle is improved and the utilization rate of the energy is increased.
According to some embodiments of the invention, a first cavity is defined between the inner walls of the piston cylinders, a second cavity is defined between the inner walls and the outer walls of the piston cylinders, the first cavity is connected with the oil inlet pipe, the second cavity is connected with the oil outlet pipe, and the first cavity is communicated with the second cavity.
According to some embodiments of the invention, the piston cylinder is provided with a damping hole on an inner wall thereof, the damping hole penetrating through the first cavity and the second cavity.
According to some embodiments of the invention, a first one-way valve is provided between the oil inlet pipe and the first cavity; and/or a second one-way valve is arranged between the oil outlet pipe and the second cavity.
According to some embodiments of the invention, the piston rod comprises a damping cavity filled with a damping material.
According to some embodiments of the invention, the damping device comprises an upper support and an inner shaft, wherein a piston cylinder is connected with the upper support, the upper support is connected with a vehicle body or a vehicle frame, the inner shaft is connected with the piston cylinder and/or the upper support, the inner shaft penetrates through the damping cavity of the piston rod, and the piston rod slides relative to the inner shaft.
According to some embodiments of the invention, the device comprises an upper support and an inner shaft, wherein a piston cylinder is connected with the upper support, the upper support is connected with a vehicle body or a vehicle frame, the inner shaft penetrates through the piston cylinder and/or the upper support, the inner shaft penetrates through a damping cavity of the piston rod, and the piston rod is connected with the inner shaft or slides relative to the inner shaft.
In order to achieve the above object, a second aspect of the present invention provides a vibration damping device, which includes a piston cylinder, a piston rod, an oil inlet pipe, an oil outlet pipe and an oil tank, wherein the piston cylinder is connected to a suspension, one end of the piston rod slides in the piston cylinder in a reciprocating manner, the other end of the piston rod is connected to a vehicle body or a vehicle frame, the piston cylinder is respectively connected to the oil inlet pipe and the oil outlet pipe, the oil outlet pipe is communicated with an energy conversion device, and the oil inlet pipe and the energy conversion device are respectively communicated with the oil tank.
According to the vibration damper provided by the embodiment of the invention, no hydraulic cylinder is additionally arranged, and under the condition that the weight of the whole vehicle is not increased and the energy consumption of the whole vehicle is increased, vibration damping and recycling of vibration energy of the vehicle can be simultaneously realized, so that the vibration damping performance of the whole vehicle is improved and the utilization rate of the energy is increased.
In order to achieve the above object, a third aspect of the present invention provides an energy conversion device, which is connected to the vibration damping device of the first or second aspect of the present invention, and includes a housing, an impeller, and a transmission shaft, wherein the oil outlet pipe and the oil tank are respectively communicated with the housing, and the impeller is connected to the transmission shaft.
According to the energy conversion device provided by the embodiment of the invention, the energy can be transmitted with the vibration damping device, the vibration energy of the vehicle can be stored and converted, and the utilization rate of the energy of the whole vehicle is improved.
In order to achieve the above object, an embodiment of a fourth aspect of the present invention proposes a vehicle including the vibration damping device of the first aspect or the second aspect of the present invention.
According to the vehicle provided by the embodiment of the invention, vibration reduction and recycling of vibration energy of the vehicle can be realized simultaneously, the vibration reduction performance of the whole vehicle and the utilization rate of energy are improved, and the smoothness of the vehicle is not influenced while the vibration energy of the vehicle is recycled.
Drawings
FIG. 1 is a schematic view of a vibration damping device according to the present invention;
FIG. 2 is a schematic view of a partial structure of a vibration damping device of the present invention;
FIG. 3 is a schematic view of a first operating condition of a vibration damping device of the present invention;
FIG. 4 is a schematic view of a second operating condition of a vibration damping device of the present invention;
FIG. 5 is a schematic view of a vehicle of the present invention.
Reference numerals:
the piston cylinder 2, the piston rod 1, the oil inlet pipe 3, the oil outlet pipe 4, the oil tank 5, the first cavity 21, the second cavity 22, the damping hole 23, the first check valve 31, the second check valve 32, the damping cavity 11, the inner shaft 10, the inner wall 24 of the piston cylinder, the outer wall 25 of the piston cylinder, the upper dead point 26, the lower dead point 27, the limiting block 13, the sealing ring 12, the upper support 8, the hanging ring 9, the impeller 61, the transmission shaft 62, the housing 63, the oil return pipe 7, the vibration damping device 100, the energy conversion device 6 and the vehicle 1000, wherein arrows beside the oil inlet pipe, the oil outlet pipe and the oil return pipe in fig. 3 and 4 indicate the flowing direction of hydraulic fluid.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-5 are exemplary and intended to be illustrative of the invention and should not be construed as limiting the invention.
As shown in fig. 1, a first aspect of the present invention provides a vibration damping device 100, which includes a piston cylinder 2, a piston rod 1, an oil inlet pipe 3, an oil outlet pipe 4 and an oil tank 5, wherein the piston cylinder 2 is connected to a vehicle body or a vehicle frame, one end of the piston rod 1 slides in the piston cylinder 2 in a reciprocating manner, the other end of the piston rod 1 is connected to a suspension, the piston cylinder 2 is respectively connected to the oil inlet pipe 3 and the oil outlet pipe 4, the oil outlet pipe 4 is communicated with an energy conversion device 6, and the oil inlet pipe 3 and the energy conversion device are respectively communicated with the oil.
According to the vibration damping device 100 provided by the embodiment of the invention, the other end of the piston rod 1 is connected with the suspension, the suspension drives the piston rod 1 to move up and down along with the vibration of the vehicle, the piston rod 1 reciprocates in the piston cylinder 2, hydraulic liquid is filled in the piston cylinder 2, the relative motion between the piston rod 1 and the piston cylinder 2 compresses the hydraulic liquid, the vibration energy is converted into hydraulic energy, no additional hydraulic cylinder is needed, the vibration damping and the recycling of the vibration energy of the vehicle can be realized simultaneously under the condition that the weight of the whole vehicle is not increased and the energy consumption of the whole vehicle is not increased, and the vibration damping performance of the whole vehicle and the utilization. The vibration reduction and the vibration energy transmission are realized simultaneously through the vibration absorber, a new transmission path of the buffering force is not added, the vibration absorber can smoothly absorb the energy, and the smooth regulation performance of the automobile control is obvious.
It should be noted that the piston rod 1 and the piston cylinder 2 are both structures of the shock absorber itself, and the shock absorbing device 100 of the present invention is an improved design based on the existing shock absorber. The piston rod 1 moves in the piston cylinder 2 and compresses the hydraulic fluid to a position where it is no longer moving, which is the top dead centre 26 of the piston cylinder 2, and the piston rod 1 moves in the piston cylinder 2 to a position where it is just not separated from the piston cylinder 2, which is the bottom dead centre 27 of the piston cylinder 2, and the piston rod 1 moves towards the top dead centre 26 in the opposite direction to the bottom dead centre 27. The oil tank 5 is filled with hydraulic fluid, the hydraulic fluid in the oil tank 5 enters the piston cylinder 2 through the oil inlet pipe 3, the hydraulic fluid in the piston cylinder 2 is conveyed to the energy conversion device 6 through the oil outlet pipe 4, and the energy conversion device 6 is communicated with the oil tank 5 to enable the hydraulic fluid to circularly flow between the oil tank 5 and the hydraulic cylinder. When the piston rod 1 compresses the hydraulic fluid, the hydraulic fluid flows into the energy conversion device 6 from the piston cylinder 2 through the oil outlet pipe 4, when the piston rod 1 moves towards the bottom dead center 27 to supplement the hydraulic fluid for the piston cylinder 2, the hydraulic fluid is sucked into the piston cylinder 2 from the oil tank 5 to supplement the hydraulic fluid for the piston cylinder 2, and the hydraulic fluid flows back to the oil tank 5 after being recycled by the energy conversion device 6. The energy conversion device can receive, transmit, convert and store vibration energy of the damper.
In addition, the piston cylinder 2 is connected with the vehicle body or the vehicle frame, namely the piston cylinder 2 is fixed on the vehicle body or the vehicle frame, particularly, the top of the piston cylinder 2 is connected with the vehicle frame or the vehicle frame, the top of the piston cylinder 2 refers to one end, close to the top dead center 26, of the piston cylinder 2, and the bottom of the piston cylinder 2 refers to one end, close to the bottom dead center 27, of the piston cylinder 2, so that the relative motion between the piston rod 1 and the piston cylinder 2 is. The piston rod 1 is connected with the suspension, that is, the suspension is linked with the piston rod 1, the connection mode of the piston rod 1 and the suspension is various and can be welding, riveting or bolt connection, for example, the piston rod 1 of one embodiment of the invention is fixed on the suspension through a hanging ring 9. The connection mode of the piston cylinder 2 and the vehicle body or the vehicle frame is also various, and can be welding, riveting or bolt connection, for example, the piston cylinder 2 of one embodiment of the invention is fixed on the vehicle body or the vehicle frame through the upper support part 8.
The invention provides a vibration damper 100, which comprises a piston cylinder 2, a piston rod 1, an oil inlet pipe 3, an oil outlet pipe 4 and an oil tank 5, wherein the piston cylinder 2 is connected with a suspension, one end of the piston rod 1 slides in the piston cylinder 2 in a reciprocating manner, the other end of the piston rod 1 is connected with a vehicle body or a vehicle frame, the piston cylinder 2 is respectively connected with the oil inlet pipe 3 and the oil outlet pipe 4, the oil outlet pipe 4 is communicated with an energy conversion device 6, and the oil inlet pipe 3 and the energy conversion device are respectively communicated with the oil tank 5.
According to the vibration damping device 100 provided by the embodiment of the invention, the other end of the piston rod 1 is connected with the suspension, the suspension drives the piston cylinder 2 to move up and down along with the vibration of the vehicle, the piston rod 1 reciprocates in the piston cylinder 2, hydraulic liquid is filled in the piston cylinder 2, the relative motion between the piston rod 1 and the piston cylinder 2 compresses the hydraulic liquid, the vibration energy is converted into hydraulic energy, no additional hydraulic cylinder is needed, the vibration damping and the recycling of the vibration energy of the vehicle can be realized simultaneously under the condition that the weight of the whole vehicle is not increased and the energy consumption of the whole vehicle is not increased, and the vibration damping performance of the whole vehicle and the utilization. The vibration reduction and the vibration energy transmission are simultaneously realized through the vibration absorber, so that the vibration absorber smoothly absorbs energy, and the smooth regulation performance of the automobile control is obvious.
In addition, the piston rod 1 is connected with the vehicle body or the vehicle frame, namely the piston cylinder 2 is fixed on the vehicle body or the vehicle frame, particularly, the top of the piston rod 1 is connected with the vehicle frame or the vehicle frame, the top of the piston rod 1 refers to one end far away from the top dead center 26 of the piston cylinder 2, and the bottom of the piston rod 1 refers to one end close to the bottom dead center 27 of the piston cylinder 2, so that the relative motion between the piston rod 1 and the piston cylinder 2 is more stable. The piston cylinder 2 is connected with the suspension, namely the suspension is linked with the piston cylinder 2, the connection mode of the piston cylinder 2 and the suspension is various and can be welding, riveting or bolt connection, for example, the piston cylinder 2 of one embodiment of the invention is fixed on the suspension through the upper support 8. The connection mode of the piston rod 1 and the vehicle body or the vehicle frame is also various, and can be welding, riveting or bolt connection, for example, the piston rod 1 of one embodiment of the invention is fixed on the vehicle body or the vehicle frame through the hanging ring 9.
Preferably, as shown in fig. 1 and 2, a first cavity 21 is defined between the inner walls 24 of the piston cylinders, a second cavity 22 is defined between the inner walls 24 of the piston cylinders and the outer walls 25 of the piston cylinders, the first cavity 21 is connected with the oil inlet pipe 3, the second cavity 22 is connected with the oil outlet pipe 4, and the first cavity 21 is communicated with the second cavity 22. A second cavity 22 is defined between the inner wall 24 of the piston cylinder and the outer wall 25 of the piston cylinder, and the second cavity 22 is an interlayer between the inner wall 24 of the piston cylinder and the outer wall 25 of the piston cylinder, so that vibration and noise generated by relative motion between the piston rod 1 and the piston cylinder 2 are effectively reduced, and the vibration and noise generated by the relative motion between the piston rod 1 and the piston cylinder 2 are effectively prevented from being transmitted outwards. Hydraulic fluid is fed from the tank 5 through the inlet pipe 3 into the first chamber 21 of the piston cylinder 2, and hydraulic fluid in the first chamber 21 is conducted through the second chamber 22 and then through the outlet pipe 4 to the energy conversion device 6 and back to the tank 5. The number of the second cavities 22 may be one or more, and the first cavity 21 and the second cavity 22 are communicated through a hole or an oil passage. And the first cavity 21 is one, the piston cylinder inner wall 24 includes a top wall and a side wall defining the first cavity 21 therebetween.
Preferably, as shown in fig. 1 and 2, the inner wall 24 of the piston cylinder is provided with a damping hole 23 penetrating the first cavity 21 and the second cavity 22. After the hydraulic liquid in the first cavity 21 flows into the second cavity 22 through the damping hole 23, most vibration and noise generated by relative motion between the piston rod 1 and the piston cylinder 2 are reduced, the curve of the buffer force borne by the shock absorber or the curve of vehicle vibration can be adjusted by adjusting the size and the shape of the damping hole 23, and the curve of the buffer force borne by the shock absorber or the curve of the vehicle vibration can be smoothly transited by the damping hole 23. The first cavity 21 and the second cavity 22 effectively prevent vibration and noise from being transmitted outwards from the piston cylinder 2, and the first cavity 21, the second cavity 22 and the damping hole 23 are matched for use, so that the vibration and noise reduction performance of the shock absorber is improved.
Preferably, the damping holes are multiple, so that the vibration and noise reduction performance of the vibration absorber is further improved.
Preferably, the piston rod 1 comprises a damping chamber 11, the damping chamber 11 being filled with a damping material. The damping material filled in the piston rod 1 reduces vibration and noise generated when the piston rod 1 and the piston cylinder 2 move relatively, and particularly when the piston rod 1 and the piston cylinder 2 move relatively to supplement hydraulic liquid for the piston cylinder 2, the damping material filled in the piston rod 1 can effectively reduce the vibration and noise generated by the piston rod 1 and the piston cylinder 2 at the moment. The damping material may be a solid, liquid or gaseous damping material, such as polyurethane, polyoxymethylene, oil, nitrogen.
Alternatively, the liquid level of the oil inlet pipe 3 is higher than the liquid level of the oil outlet pipe 4, for example, the piston cylinder 2 is connected to the vehicle body or the vehicle frame and the piston rod 1 is connected to the suspension, and the connection point of the oil inlet pipe 3 and the piston cylinder 2 is closer to the top dead center 26 of the piston cylinder 2 than the connection point of the oil outlet pipe 4 and the piston cylinder 2, so that the circulation fluidity of the hydraulic fluid is better.
Alternatively, the level of the oil outlet pipe 4 is higher than the level of the oil inlet pipe 3, for example, the piston rod 1 is connected to the vehicle body or the vehicle frame and the piston cylinder 2 is connected to the suspension, and the connection point of the oil inlet pipe 3 to the piston cylinder 2 is closer to the top dead center 26 of the piston cylinder 2 than the connection point of the oil outlet pipe 4 to the piston cylinder 2, so that the circulation fluidity of the hydraulic fluid is better.
Preferably, a first check valve 31 is arranged between the oil inlet pipe 3 and the first cavity 21; and/or a second one-way valve 32 is provided between the flowline 4 and the second chamber 22. A first check valve 31 is arranged between the oil inlet pipe 3 and the first cavity 21, so that hydraulic fluid can only flow from the oil inlet pipe 3 to the first cavity 21 and cannot flow back from the first cavity 21 to the oil inlet pipe 3. A second check valve 32 is arranged between the oil outlet pipe 4 and the second cavity 22, so that hydraulic fluid can only flow from the second cavity 22 to the oil outlet pipe 4 and cannot flow back from the oil outlet pipe 4 to the second cavity 22. A first check valve 31 is arranged between the oil inlet pipe 3 and the first cavity 21, and a second check valve 32 is arranged between the oil outlet pipe 4 and the second cavity 22, so that when the piston rod 1 compresses the hydraulic fluid in the piston cylinder 2, the hydraulic fluid flows from the second cavity 22 to the oil outlet pipe 4, and when the piston rod 1 supplements the hydraulic fluid for the piston cylinder 2, the hydraulic fluid flows from the oil inlet pipe 3 to the first cavity 21.
Optionally, an upper support 8 and an inner shaft 10 are included, the piston cylinder 2 is connected with the upper support 8, the upper support 8 is connected with a vehicle body or a vehicle frame, the inner shaft 10 is connected with the piston cylinder 2 and/or the upper support 8, the inner shaft 10 penetrates through a damping cavity 11 of the piston rod 1, and the piston rod 1 slides relative to the inner shaft 10.
Optionally, an upper support 8 and an inner shaft 10 are included, the piston cylinder 2 is connected with the upper support 8, the upper support 8 is connected with a vehicle body or a vehicle frame, the inner shaft 10 penetrates through the piston cylinder 2 and/or the upper support 8, the inner shaft 10 penetrates through a damping cavity 11 of the piston rod 1, and the piston rod 1 is connected with the inner shaft 10 or the piston rod 1 slides relative to the inner shaft 10.
Optionally, when the piston rod 1 is connected to the inner shaft 10, the piston cylinder 2 is provided with a limit block 13 for limiting the movement of the piston rod 1, and particularly, the inner wall of the bottom of the piston cylinder 2 is provided with the limit block 13 for limiting the piston rod 1 to continue to move, so that the piston rod 1 is prevented from being separated from the piston cylinder 2.
Optionally, when the piston rod 1 slides relative to the inner shaft 10, the inner shaft 10 is provided with a stopper 13 for limiting the movement of the piston rod 1, when the stopper 13 of the inner shaft 10 is disposed at the top dead center 26, the piston rod 1 is limited to continue moving, and when the stopper 13 of the inner shaft 10 is disposed at the bottom dead center 27, the piston rod 1 is prevented from being separated from the piston cylinder 2. The inner shaft 10 extends into the damping cavity 11 of the piston rod 1 from the opening of the piston rod 1, and a sealing ring 12 or a sealing gasket is arranged between the opening of the piston rod 1 and the inner shaft 10.
Optionally, a sealing ring 12 or a sealing gasket is arranged between the top and/or the bottom of the piston cylinder 2 and the inner shaft 10; and a sealing ring 12 or a sealing gasket is arranged between the top and/or the bottom of the piston cylinder 2 and the piston rod 1.
The course of the relative movement of the piston rod 1 and the piston cylinder 2 is described in detail below with reference to the embodiment of fig. 3 and 4.
The piston cylinder 2 of the embodiment of fig. 3 and 4 is connected to the vehicle frame or body and the piston rod 1 is connected to the suspension. When the suspension is vibrated upwards by the vehicle, the piston rod 1 is driven to move upwards, the piston rod 1 compresses the hydraulic fluid in the piston cylinder 2 to the top dead center 26 of the piston cylinder 2, and the hydraulic fluid flows to the oil outlet pipe 4 from the second cavity 22, then passes through the shell 63 of the energy conversion device 6 and finally flows back to the oil tank 5. When the suspension is vibrated downwards by the vehicle to drive the piston rod 1 to move upwards or the piston rod 1 moves downwards under the reset action of the suspension after moving to the upper dead point 26 of the piston cylinder 2, the piston rod 1 moves towards the lower dead point 27 of the piston cylinder 2, at the moment, hydraulic liquid flows to the first cavity 21 from the oil tank 5 and the oil inlet pipe 3, and the piston rod 1 absorbs the hydraulic liquid from the oil tank 5 for the piston cylinder 2 to supplement the hydraulic liquid in the piston cylinder 2.
When the piston rod 1 moves towards the top dead center 26 of the piston cylinder 2, the piston rod 1 compresses the hydraulic fluid of the piston cylinder 2, and when the piston rod 1 moves towards the bottom dead center 27 of the piston cylinder 2, the piston rod 1 supplements the hydraulic fluid for the piston cylinder 2. Piston rod 1 and frame or automobile body are connected, and when piston cylinder 2 was connected with the suspension, the relative piston cylinder 2's of top dead center 26 and bottom dead center 27 of piston cylinder 2 position remained unchanged, and the relative motion process and the theory of operation of piston rod 1 and piston cylinder 2 are similar with above description this moment, no longer describe repeatedly.
As shown in fig. 1, 3 and 4, a third aspect of the present invention provides an energy conversion device 6, which is connected to the vibration damping device 100 of the first or second aspect of the present invention, and is characterized by comprising a housing 63, an impeller 61 and a transmission shaft 62, wherein the oil outlet pipe 4 and the oil tank 5 are respectively communicated with the housing 63, the impeller 61 is connected to the transmission shaft 62, and the impeller 61 and the transmission shaft 62 are rotatably disposed in the housing 63.
According to the energy conversion device 6, energy can be transmitted with the vibration damper 100, hydraulic energy is effectively converted into storable energy, vibration energy of a vehicle is recovered, stored and utilized, and the utilization rate of the energy of the whole vehicle is improved.
It can be understood that the oil outlet pipe 4 and the oil tank 5 are respectively communicated with the housing 63, the oil outlet pipe 4 conveys hydraulic fluid into the housing 63, the housing 63 is communicated with the oil tank 5 through the oil return pipe 7, one end of the transmission shaft 62 extending into the housing 63 is connected with the impeller 61, the other end of the transmission shaft is connected with the power take-off device through a gear transmission or connected with a motor shaft of the motor or connected with a rotor of the motor, the hydraulic fluid drives the impeller 61 to rotate through hydraulic energy, and mechanical energy of the transmission shaft 62 is converted into kinetic energy of the power take-off device, or power is generated through the motor to supply power to a vehicle or store energy in a.
As shown in fig. 5, a fourth aspect of the present invention provides a vehicle 1000 including the vibration damping device 100 of the first or second aspect of the present invention.
According to the vibration damping device 100 provided by the invention, the weight and the energy consumption of the whole vehicle are not increased, the dynamic property and the economical efficiency of the whole vehicle are improved, the vibration damping and the recycling of the vibration energy of the vehicle 1000 are realized, the vibration damping performance and the energy utilization rate of the whole vehicle are improved, and the smoothness of the vehicle 1000 is not influenced while the vibration energy of the vehicle 1000 is recycled.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The damping device is characterized by comprising a piston cylinder, a piston rod, an oil inlet pipe, an oil outlet pipe and an oil tank, wherein the piston cylinder is connected with a vehicle body or a vehicle frame, one end of the piston rod slides in the piston cylinder in a reciprocating mode, the other end of the piston rod is connected with a suspension, the piston cylinder is respectively connected with the oil inlet pipe and the oil outlet pipe, the oil outlet pipe is communicated with an energy conversion device, and the oil inlet pipe and the energy conversion device are respectively communicated with the oil tank.
2. The vibration damping device according to claim 1, wherein a first cavity is defined between the inner walls of the piston cylinders, a second cavity is defined between the inner walls and the outer walls of the piston cylinders, the first cavity is connected with the oil inlet pipe, the second cavity is connected with the oil outlet pipe, and the first cavity and the second cavity are communicated.
3. The vibration damping device according to claim 2, wherein the piston cylinder is provided on an inner wall thereof with a damping hole penetrating the first cavity and the second cavity.
4. The vibration damping device as claimed in claim 1, wherein a first check valve is provided between the oil inlet pipe and the first cavity; and/or a second one-way valve is arranged between the oil outlet pipe and the second cavity.
5. The vibration damping device according to claim 1, wherein the piston rod includes a damping chamber filled with a damping material.
6. The vibration damping device according to claim 5, comprising an upper support member and an inner shaft, wherein a piston cylinder is connected with the upper support member, the upper support member is connected with a vehicle body or a vehicle frame, the inner shaft is connected with the piston cylinder and/or the upper support member, the inner shaft passes through the damping chamber of the piston rod, and the piston rod slides relative to the inner shaft.
7. The vibration damping device according to claim 5, comprising an upper support member and an inner shaft, wherein a piston cylinder is connected with the upper support member, the upper support member is connected with the vehicle body or the vehicle frame, the inner shaft passes through the piston cylinder and/or the upper support member, the inner shaft passes through the damping chamber of the piston rod, the piston rod is connected with the inner shaft or the piston rod slides relative to the inner shaft.
8. The damping device is characterized by comprising a piston cylinder, a piston rod, an oil inlet pipe, an oil outlet pipe and an oil tank, wherein the piston cylinder is connected with a suspension, one end of the piston rod slides in the piston cylinder in a reciprocating mode, the other end of the piston rod is connected with an automobile body or a frame, the piston cylinder is respectively connected with the oil inlet pipe and the oil outlet pipe, the oil outlet pipe is communicated with an energy conversion device, and the oil inlet pipe and the energy conversion device are respectively communicated with the oil tank.
9. An energy conversion device connected with the vibration damping device according to claim 1 or claim 8, comprising a housing, an impeller and a transmission shaft, wherein the oil outlet pipe and the oil tank are respectively communicated with the housing, the impeller is connected with the transmission shaft, and the impeller and the transmission shaft are rotatably disposed in the housing.
10. A vehicle characterized by comprising the vibration damping device according to claim 1 or claim 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911054862.1A CN112747063B (en) | 2019-10-31 | 2019-10-31 | Vibration damper, energy conversion device and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911054862.1A CN112747063B (en) | 2019-10-31 | 2019-10-31 | Vibration damper, energy conversion device and vehicle |
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| CN112747063A true CN112747063A (en) | 2021-05-04 |
| CN112747063B CN112747063B (en) | 2022-06-14 |
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| CN115949693B (en) * | 2022-12-13 | 2024-05-24 | 浙江方泰汽车配件有限公司 | Impeller energy feedback type damping rod |
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| CN112747063B (en) | 2022-06-14 |
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