CN108730399B

CN108730399B - Vibration damping system

Info

Publication number: CN108730399B
Application number: CN201810638567.XA
Authority: CN
Inventors: 肖平; 王展展; 疏达; 何二鹏; 张�林; 田丽; 别威; 曹菁; 严晨曦; 李仕成; 彭求志; 张喆; 李兴; 李宁; 邓多成; 于雪东
Original assignee: Anhui Polytechnic University
Current assignee: Anhui Polytechnic University
Priority date: 2018-06-20
Filing date: 2018-06-20
Publication date: 2023-04-18
Anticipated expiration: 2038-06-20
Also published as: CN108730399A

Abstract

The invention discloses a vibration damping system which comprises a vibration damper, an anti-roll device connected with the vibration damper and a heat dissipation device connected with the vibration damper and used for cooling the vibration damper. According to the vibration damping system, the heat dissipation device connected with the vibration damper is arranged, so that the heat dissipation device can cool the vibration damper, the influence on the use performance caused by overhigh temperature is avoided, and the vibration damping performance is improved; meanwhile, the anti-roll device is arranged, so that the stability and riding comfort of the automobile body can be improved.

Description

Vibration damping system

Technical Field

The invention relates to a vibration damping system for a motor vehicle.

Background

The shock absorber is a very important part in a vehicle suspension system, and plays an indispensable role in the riding comfort and the maneuverability as well as the stability of the vehicle. The heat generated by the hydraulic damper during operation affects the viscosity of the hydraulic oil and thus the vibration damping of the vehicle, so that it is necessary to perform heat dissipation treatment on the damper. In addition, since the rolling of the automobile occurs when the automobile passes through an uneven road surface, which affects the riding comfort, it is necessary to reduce the rolling and improve the vibration damping performance in order to improve the stability of the automobile body and the riding comfort.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a vibration reduction system, and aims to improve the heat dissipation effect.

In order to achieve the purpose, the invention adopts the technical scheme that: the vibration reduction system comprises a vibration reducer, an anti-roll device connected with the vibration reducer and a heat dissipation device connected with the vibration reducer and used for cooling the vibration reducer.

The shock absorber comprises a working cylinder barrel, an oil storage cylinder barrel sleeved on the working cylinder barrel, a first piston arranged in the working cylinder barrel, a first piston rod connected with the first piston, a second piston and a second piston rod connected with the second piston and the first piston rod, wherein the oil storage cylinder barrel is provided with a first liquid storage cavity which contains cooling media and is communicated with the heat dissipation device, and the second piston is movably arranged in the first liquid storage cavity and is used for outwards extruding the cooling media in the liquid outlet cavity.

The second piston is of a circular ring structure, the second piston rods are arranged in a plurality and are distributed in sequence along the circumferential direction of the second piston, and the second piston rods are fixedly connected with the first piston rods outside the oil storage cylinder barrel.

The first piston is provided with a second liquid storage cavity for containing a cooling medium, the first piston rod is provided with a cooling water channel communicated with the second liquid storage cavity, and the cooling water channel is communicated with the heat dissipation device.

The cooling water channel extends along the axial direction of the first piston rod in the first piston rod.

The shock absorber further comprises an inner partition plate which is movably arranged in the inner cavity of the first piston and an elastic element which is used for applying elastic acting force to the inner partition plate, the inner cavity of the first piston is divided into the second liquid storage cavity and the lower accommodating cavity by the inner partition plate, the elastic element is located in the lower accommodating cavity, and the inner partition plate is located between the elastic element and the cooling water channel.

The heat dissipation device comprises a heat dissipation box used for containing a cooling medium, a first water pipe connected with the heat dissipation box and the oil storage cylinder barrel, and a second water pipe connected with the heat dissipation box and the first piston rod, wherein the first water pipe is communicated with the first liquid storage cavity, and the second water pipe is communicated with the cooling water channel.

The anti-roll device comprises an upper cross beam which can be rotatably arranged and a rotary damper which is used for applying damping force to the upper cross beam when the upper cross beam rotates.

The rotary damper comprises a shell, a rotary blade and a damping conducting component, wherein the rotary blade is arranged in an inner cavity of the shell and connected with an upper cross beam, the damping conducting component is connected with the shell, the rotary blade divides the inner cavity of the shell into a first buffer cavity and a second buffer cavity, damping liquid is filled in the first buffer cavity and the second buffer cavity, the first buffer cavity and the second buffer cavity are communicated with the damping conducting component, and the rotary blade is provided with a throttling hole which enables the first buffer cavity and the second buffer cavity to be communicated.

The anti-roll device further comprises a lower cross beam, a guide rod and a guide sliding sleeve, wherein the lower cross beam is located below the upper cross beam and connected with the shock absorber, the guide rod is connected with the lower cross beam, and the guide sliding sleeve is sleeved on the guide rod and connected with the upper cross beam.

According to the vibration damping system, the heat dissipation device connected with the vibration damper is arranged, so that the heat dissipation device can cool the vibration damper, the influence on the use performance caused by overhigh temperature is avoided, and the vibration damping performance is improved; meanwhile, the anti-roll device is arranged, so that the stability and riding comfort of the automobile body can be improved.

Drawings

The present specification includes the following figures, which show the contents:

FIG. 1 is a schematic structural view of the damping system of the present invention;

FIG. 2 is a cross-sectional view of the shock absorber;

FIG. 3 is a cross-sectional schematic view of the shock absorber;

FIG. 4 is a schematic structural view of the shock absorber;

FIG. 5 is a schematic structural diagram of a heat dissipation device;

FIG. 6 is a schematic view of the anti-roll apparatus;

FIG. 7 is a cross-sectional view of the rotary damper;

FIG. 8 is a schematic view of the attachment of the vibration damping system of the present invention to a vehicle body;

labeled as: 1. a vehicle body; 2. a shock absorber; 201. a working cylinder barrel; 202. an oil storage cylinder barrel; 203. a first piston; 204. a first piston rod; 205. a second piston; 206. a second piston rod; 207. a first reservoir chamber; 208. a second reservoir chamber; 209. a cooling water channel; 210. an inner partition plate; 211. an elastic element; 212. a flow-through valve; 213. a bottom valve; 214. a lower lifting ring; 215. a seal ring; 216. a lower accommodating cavity; 217. an upper chamber; 218. a lower chamber; 219. a silica gel heat sink; 220. a liquid passing hole; 3. a heat sink; 301. a heat dissipation box; 302. a heat dissipating fin; 303. a first water pipe; 304. a second water pipe; 4. a damping spring; 5. a rotary damper; 501. a housing; 502. a rotating blade; 503. a first conduit; 504. a second conduit; 505. an orifice; 506. a first buffer chamber; 507. a second buffer chamber; 508. a damping conducting member; 509. a damper heat sink; 6. an upper cross beam; 7. a lower cross beam; 8. a guide sliding sleeve; 9. a guide rod; 10. and a seal.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.

As shown in fig. 1 to 8, the present invention provides a vibration damping system including a vibration damper 2, a roll preventing device connected to the vibration damper 2, and a heat dissipating device 3 connected to the vibration damper 2 and used for cooling the vibration damper 2.

Specifically, as shown in fig. 1 to 4, the shock absorber 2 is a double-acting cylinder type shock absorber, and the shock absorber 2 includes a working cylinder 201, an oil storage cylinder 202 fitted over the working cylinder 201, a lower suspension ring 214 fixedly connected to the oil storage cylinder 202, a first piston 203 disposed in the working cylinder 201, a first piston rod 204 connected to the first piston 203, a second piston 205, and a second piston rod 206 connected to the second piston 205 and the first piston rod 204. The first piston 203 is provided with a flow valve and an expansion valve, and the bottom of the working cylinder 201 is provided with a bottom valve which comprises a compression valve and a compensation valve. The oil storage cylinder 202 has a first liquid storage cavity 207 which contains a cooling medium and is communicated with the heat dissipation device 3, and the second piston 205 is movably arranged in the first liquid storage cavity 207 and used for extruding the cooling medium out of the liquid outlet cavity. The working cylinder barrel 201 and the oil storage cylinder barrel 202 are of hollow cylinder structures, the working cylinder barrel 201 and the oil storage cylinder barrel 202 are coaxially arranged, the diameter of the working cylinder barrel 201 is smaller than that of the oil storage cylinder barrel 202, and oil liquid is arranged in the working cylinder barrel 201 and the oil storage cylinder barrel 202. The first piston 203 is movably arranged in an inner cavity of the working cylinder 201, the first piston 203 is coaxial with the working cylinder 201, the first piston rod 204 is inserted into the inner cavity of the working cylinder 201, one end of the first piston rod 204 is fixedly connected with the first piston 203, the other end of the first piston rod 204 extends out of the working cylinder 201, the end of the first piston rod 204 is used for being connected with a sprung mass (namely, a body of an automobile) of the automobile, the lower suspension ring 214 is connected with an unsprung mass of the automobile, and the lower suspension ring 214 is fixedly connected with the lower end of the oil storage cylinder 202.

As shown in fig. 2 and 3, the first reservoir chamber 207 is a circular ring-shaped cavity that is provided inside the circular ring-shaped side wall of the reservoir cylinder 202 and extends along the entire circumferential direction, the side wall of the reservoir cylinder 202 has a certain thickness, and a gap is provided between the inner circumferential surface of the side wall of the reservoir cylinder 202 and the outer circumferential surface of the working cylinder 201, and the gap forms a reservoir chamber that contains oil. The second piston 205 is a circular ring structure, the second piston 205 and the oil storage cylinder 202 are coaxially arranged, the second piston 205 can axially move in the first reservoir chamber, the first piston 203 and the second piston 205 synchronously move, the second piston rods 206 are arranged in a plurality, all the second piston rods 206 are sequentially distributed along the circumferential direction of the second piston 205, and the second piston rods 206 are fixedly connected with the first piston rods 204 outside the oil storage cylinder 202. One end of the second piston rod 206 is inserted into the first fluid storage cavity 207 of the fluid storage cylinder 202, the end of the second piston rod 206 is fixedly connected with the second piston 205, the other end of the second piston rod 206 extends out of the fluid storage cylinder 202, the end of the second piston rod 206 is fixedly connected with the first piston rod 204, and the second piston rod 206 is of an L-shaped structure. The first liquid storage cavity 207 is filled with cooling medium, the first liquid storage cavity 207 is communicated with the heat dissipation device 3, when wheels move close to a vehicle body in the driving process of the vehicle, the second piston rod 206 pushes the second piston 205 downwards, the oil pressure in the first liquid storage cavity 207 rises, the second piston 205 extrudes the cooling medium in the first liquid storage cavity 207 outwards, and finally the cooling medium in the first liquid storage cavity flows into the heat dissipation device 3.

Preferably, the second piston rod 206 is provided in multiple numbers and all the second piston rods 206 are uniformly distributed along the circumferential direction of the second piston 205, so as to ensure uniform stress on the second piston 205 and improve the stability of the operation of the second piston 205. As shown in fig. 2 and 3, in the present embodiment, the second piston rod 206 is provided in two.

As shown in fig. 2, the first piston 203 has a second reservoir 208 containing a cooling medium, the first piston rod 204 has a cooling water passage 209 communicating with the second reservoir 208, the cooling water passage 209 communicates with the heat sink 3, and the cooling water passage 209 extends in the axial direction of the first piston rod 204 at the inner center of the first piston rod 204. The cooling water passage 209 has a certain length, and the cooling water passage 209 is formed with an opening for passing the cooling medium on the outer circumferential surface of the first piston rod 204, the opening being located outside the working cylinder 201 to allow the cooling medium to flow into and out of the cooling water passage 209. The second liquid storage cavity 208 is filled with cooling media, the second liquid storage cavity 208 is communicated with the heat dissipation device 3 through the cooling water channel 209, in the driving process of an automobile, when wheels move close to the automobile body, the second piston rod 206 pushes the second piston 205 downwards, the oil pressure in the first liquid storage cavity 207 rises, the second piston 205 extrudes the cooling media in the first liquid storage cavity 207 outwards, the cooling media in the first liquid storage cavity flow into the heat dissipation device 3, the oil pressure in the heat dissipation device 3 rises, the cooling media of the heat dissipation device 3 can flow into the second liquid storage cavity 208 through the cooling water channel 209, and the cooling media can receive heat radiation generated inside the shock absorber 2 when being gathered in the second liquid storage cavity, so that heat exchange is realized, and the purpose of cooling the shock absorber 2 is achieved. Similarly, when the wheel leaves relative to the vehicle body, the first piston 203 and the second piston 205 move upward at the same time, the oil pressure in the first liquid storage cavity 207 is reduced, the cooling medium in the second liquid storage cavity 208 flows into the heat dissipation device 3 through the cooling water channel 209, the cooling medium entering the heat dissipation device 3 is cooled, and finally the cooling medium in the heat dissipation device 3 flows back to the first liquid storage cavity 207, so that the circulation process of the cooling medium is completed, and the purpose of dissipating heat for the shock absorber 2 is achieved.

As shown in fig. 2 and 3, the damper 2 further includes an inner partition 210 movably disposed in the inner cavity of the first piston 203, and an elastic member 211 for applying an elastic force to the inner partition 210, the inner partition 210 dividing the inner cavity of the first piston 203 into the second reservoir 208 and the lower receiving chamber 216, the elastic member 211 being located in the lower receiving chamber 216, and the inner partition 210 being located between the elastic member 211 and the cooling water passage 209. The first piston 203 is of a hollow structure, the second fluid storage cavity 208 and the lower accommodating cavity 216 form an inner cavity of the first piston 203, the inner cavity of the first piston 203 is a circular cavity, the second fluid storage cavity 208 is located above the lower accommodating cavity 216, the inner partition 210 is axially movably arranged in the inner cavity of the first piston 203, the inner partition 210 is of a circular structure, and the inner partition 210 and the first piston 203 are coaxially arranged. The elastic element 211 is sandwiched between the inner partition 210 and the inner bottom surface of the lower receiving cavity 216, and the elastic element 211 applies an elastic force to the inner partition 210 in the axial direction to push the inner partition 210 to move toward the direction close to the cooling water channel 209, so that the oil pressure in the second reservoir chamber 208 can be increased. When the wheel moves closer to the vehicle body, the cooling medium of the heat sink 3 flows into the second reservoir 208 through the cooling water channel 209, the oil pressure in the second reservoir 208 increases, and the cooling medium entering the second reservoir 208 pushes the inner partition 210 downward to counteract the elastic force generated by the elastic element 211. When the wheel is separated from the vehicle body, under the action of the elastic element 211, the inner partition 210 moves upward to extrude the cooling medium in the second reservoir 208 outward, and then the cooling medium in the second reservoir 208 flows back to the heat sink 3 through the cooling water channel 209.

Preferably, as shown in fig. 2, in order to increase the heat dissipation effect, a silicone heat sink 219 is disposed on the outer circumferential surface of the oil storage cylinder 202 of the shock absorber 2, and the silicone heat sink 219 has the advantages of high heat dissipation rate, low cost, and high performance-to-price ratio.

As shown in fig. 2, 4, and 5, the heat sink 3 includes a heat dissipation tank 301 for containing a cooling medium, a first water pipe 303 connected to the heat dissipation tank 301 and the reservoir cylinder 202, and a second water pipe 304 connected to the heat dissipation tank 301 and the first piston rod 204, the first water pipe 303 communicating with the first reservoir chamber 207, and the second water pipe 304 communicating with the cooling water passage 209. The first reservoir 207 forms a liquid passing hole 220 for passing a cooling medium on the outer circumferential surface of the reservoir cylinder 202, one end of a first water pipe 303 is connected to the heat dissipation tank 301, and the other end of the first water pipe 303 is connected to the reservoir cylinder 202 at the position of the liquid passing hole 220. One end of the second water pipe 304 is connected to the radiator tank 301, and the other end of the second water pipe 304 is connected to the first piston rod 204 at a position of an opening formed by the cooling water passage 209 in the first piston rod 204. Be equipped with radiating fin 302 on the surface of heat dissipation case 301, after cooling medium got into heat dissipation case 301, can take place heat exchange with heat dissipation case 301, cooling medium is cooled down, and the cooling medium after the cooling flows into first stock solution chamber 207 or second stock solution chamber 208 then, reaches the purpose to the shock absorber 2 cooling.

As shown in fig. 1, 6 and 7, the anti-roll apparatus includes an upper beam 6 rotatably disposed, a rotary damper 5 for applying a damping force to the upper beam 6 when the upper beam 6 rotates, a lower beam 7 located below the upper beam 6 and connected to the shock absorber 2, a guide bar 9 connected to the lower beam 7, and a guide bush 8 fitted over the guide bar 9 and connected to the upper beam 6. The upper crossbeam 6 is the cylinder, and the entablature 6 is the level setting, and the length direction of entablature 6 (also be the axial of entablature 6) parallels with the length direction of automobile body, and entablature 6 is located the below of automobile body, and entablature 6 is used for being connected with automobile body, and when the automobile body took place to heel, the automobile body can drive entablature 6 and rotate around its self axis. The length direction of the upper cross beam 6 is parallel to the length direction of the lower cross beam 7, the lower cross beam 7 is connected with the lower hanging ring 214 of the shock absorber 2 or the unsprung mass of the automobile, the length directions of the guide sleeve 8 and the guide rod 9 are perpendicular to the length directions of the upper cross beam 6 and the lower cross beam 7, the guide sleeve 8 is of a hollow structure, one end of the guide rod 9 is connected with the lower cross beam 7, the other end of the guide rod 9 is inserted into the inner cavity of the guide sleeve 8, and the guide sleeve 8 and the guide rod 9 can move relatively.

As shown in fig. 6 and 7, the rotary damper 5 includes a housing 501, a rotary vane 502 provided in an inner cavity of the housing 501 and connected to the upper cross member 6, and a damping communication member 508 connected to the housing 501, the rotary vane 502 divides the inner cavity of the housing 501 into a first cushion chamber 506 and a second cushion chamber 507, the first cushion chamber 506 and the second cushion chamber 507 are filled with a damping fluid, the first cushion chamber 506 and the second cushion chamber 507 are communicated with the damping communication member 508, and the rotary vane 502 has an orifice that communicates the first cushion chamber 506 and the second cushion chamber 507. The housing 501 is a hollow structure, the housing 501 and the lower beam 7 are relatively fixed, an inner cavity of the housing 501 is a semicircular cavity, the rotary blade 502 is rotatably disposed in the inner cavity of the housing 501, the rotary blade 502 is a rectangular block structure, the upper beam 6 is fixedly connected with the rotary blade 502, and the rotary blade 502 extends toward the outer side of the upper beam 6 along the radial direction of the upper beam 6. The damping conducting component 508 is connected with the casing 501 through a first pipeline 503 and a second pipeline 504, a first opening communicated with the first buffer cavity 506 and a second opening communicated with the second buffer cavity 507 are arranged on the side wall of the casing 501, the rotating blade 502 is located between the first opening and the second opening, the first pipeline 503 is fixedly connected with the casing 501 at the first opening, the second pipeline 504 is fixedly connected with the casing 501 at the second opening, the first buffer cavity 506 is communicated with the damping conducting component 508 through the first pipeline 503, and the second buffer cavity 507 is communicated with the damping conducting component 508 through the second pipeline 504. When the upper cross beam 6 rotates, the upper cross beam 6 can drive the rotating blades 502 to rotate in the inner cavity of the housing 501, so as to change the volume of the first buffer cavity 506 and the second buffer cavity 507, so that the damping fluid in the first buffer cavity 506 or the second buffer cavity 507 is discharged outwards, and further damping force is generated to resist the lateral rolling of the vehicle body, and the riding comfort is improved.

The damping conducting component 508 has various forms, the damping conducting component 508 is an adjustable throttle valve, and the damping conducting component 508 can also be other conducting structures with damping function. The flow rate of the damping fluid discharged from the casing 501 is limited by the damping conducting component 508, so as to achieve the function of buffering and damping. The orifice 505 is a through hole that is provided in the rotor blade 502 so as to penetrate in the thickness direction of the rotor blade 502 (the thickness direction of the rotor blade 502 is spatially perpendicular to the axial direction of the upper cross member 6), the first cushion chamber 506 and the second cushion chamber 507 communicate with each other through the orifice 505, and at least one orifice 505 is provided in the rotor blade 502. When the vehicle body rolls during the running of the vehicle, the upper cross beam 6 drives the rotating blade 502 to deflect towards the first buffer cavity 506, the damping fluid in the first buffer cavity 506 flows into the damping conducting component 508 through the first pipeline 503, meanwhile, a part of the damping fluid in the first buffer cavity 506 enters the second buffer cavity 507 through the throttling hole 505, and the damping conducting component 508 generates a damping force to reduce the roll of the vehicle body. The damping fluid flowing out of the damping conducting component 508 enters the second buffer chamber 507 through the second pipe 504, and the damping fluid is circulated.

At least one rotary damper 5 is provided. When the rotary damper 5 is provided in plural, all the rotary dampers 5 are arranged in sequence along the length direction of the upper cross member 6. And a silica gel cooling fin 509 is also arranged outside the rotary damper to ensure the damping characteristic of oil in the damper and prolong the service life of hydraulic oil of the damper. As shown in fig. 6, the arrangement of the relative positions of the two rotary dampers on the upper beam 6 is such that the blades inside the two rotary dampers are always in the relative positions on the upper beam, the stress on the upper beam and the stress on the rotary blades are balanced, the fatigue life of the upper beam and the blades is prolonged, and the stability of the rotary dampers is improved.

The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Any insubstantial improvements over the methods and technical solutions of the present invention; the present invention is not limited to the above embodiments, and can be modified in various ways.

Claims

1. Damping system, including the shock absorber and the anti-roll device who is connected with the shock absorber, its characterized in that: the heat dissipation device is connected with the shock absorber and used for cooling the shock absorber;

the shock absorber comprises a working cylinder barrel, an oil storage cylinder barrel sleeved on the working cylinder barrel, a first piston arranged in the working cylinder barrel, a first piston rod connected with the first piston, a second piston and a second piston rod connected with the second piston and the first piston rod, the oil storage cylinder barrel is provided with a first liquid storage cavity which contains cooling media and is communicated with the heat dissipation device, and the second piston is movably arranged in the first liquid storage cavity and is used for extruding the cooling media in the liquid outlet cavity outwards;

the second piston is of a circular structure, a plurality of second piston rods are arranged and are sequentially distributed along the circumferential direction of the second piston, and the second piston rods are fixedly connected with the first piston rods outside the oil storage cylinder barrel;

the first piston is provided with a second liquid storage cavity for containing a cooling medium, the first piston rod is provided with a cooling water channel communicated with the second liquid storage cavity, and the cooling water channel is communicated with the heat radiator;

the cooling water channel extends along the axial direction of the first piston rod in the first piston rod;

the shock absorber further comprises an inner partition plate which is movably arranged in the inner cavity of the first piston and an elastic element which is used for applying elastic acting force to the inner partition plate, the inner cavity of the first piston is divided into the second liquid storage cavity and a lower accommodating cavity by the inner partition plate, the elastic element is located in the lower accommodating cavity, and the inner partition plate is located between the elastic element and the cooling water channel;

2. The damping system according to claim 1, characterized in that: the anti-roll device comprises an upper cross beam which can be rotatably arranged and a rotary damper which is used for applying damping force to the upper cross beam when the upper cross beam rotates.

3. The damping system according to claim 2, characterized in that: the rotary damper comprises a shell, rotary blades arranged in an inner cavity of the shell and connected with the upper cross beam, and a damping conducting part connected with the shell, wherein the inner cavity of the shell is divided into a first buffer cavity and a second buffer cavity by the rotary blades, damping liquid is filled in the first buffer cavity and the second buffer cavity, the first buffer cavity and the second buffer cavity are communicated with the damping conducting part, and the rotary blades are provided with throttling holes for communicating the first buffer cavity and the second buffer cavity.

4. The damping system of claim 2, wherein: the anti-roll device further comprises a lower cross beam, a guide rod and a guide sliding sleeve, wherein the lower cross beam is located below the upper cross beam and connected with the shock absorber, the guide rod is connected with the lower cross beam, and the guide sliding sleeve is sleeved on the guide rod and connected with the upper cross beam.