CN108730399B - Vibration damping system - Google Patents

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

Damping system

technical field

The invention relates to a vibration damping system suitable for automobiles.

Background technique

The shock absorber is a very important component in the vehicle suspension system, which plays an indispensable role in the vehicle's passenger comfort, handling and stability. The heat generated by the hydraulic shock absorber during work will affect the viscosity of the hydraulic oil and affect the vibration reduction of the car, so it is necessary to dissipate heat from the shock absorber. Moreover, when the car passes through uneven roads, it will produce roll, which will affect the ride comfort. Therefore, in order to improve the stability of the body and ride comfort, it is necessary to reduce roll and improve the damping performance.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention provides a vibration damping system, the purpose of which is to improve the heat dissipation effect.

In order to achieve the above object, the technical solution adopted by the present invention is: a shock absorber system, including a shock absorber, an anti-rolling device connected to the shock absorber, and a device connected to the shock absorber and used to cool the shock absorber cooling device.

The shock absorber includes a working cylinder, an oil storage cylinder sleeved on the working cylinder, a first piston disposed in the working cylinder, a first piston rod connected to the first piston, a second piston and a second piston connected to the second piston. The piston is connected to the second piston rod of the first piston rod. The oil storage cylinder barrel has a first liquid storage chamber that accommodates the cooling medium and communicates with the heat dissipation device. The second piston is movably arranged in the first liquid storage chamber. Used to squeeze out the cooling medium in the liquid outlet cavity.

The second piston is in an annular structure, the second piston rods are provided in multiples and all the second piston rods are distributed sequentially along the circumference of the second piston, and the second piston rods are outside the oil storage cylinder barrel It is fixedly connected with the first piston rod.

The first piston has a second liquid storage chamber containing a cooling medium, the first piston rod has a cooling water passage communicating with the second liquid storage chamber, and the cooling water passage communicates with the heat sink.

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

The shock absorber also includes an inner partition movably arranged in the inner cavity of the first piston and an elastic element for applying an elastic force to the inner partition, and the inner partition pushes the inner partition of the first piston The inner chamber is divided into the second liquid storage chamber and the lower accommodation chamber, the elastic element is located in the lower accommodation chamber, and the inner partition is located between the elastic element and the cooling water channel.

The heat dissipation device includes a heat dissipation tank for accommodating cooling medium, a first water pipe connected with the heat dissipation tank and the oil storage cylinder, and a second water pipe connected with the heat dissipation tank and the first piston rod, the first water pipe is connected with the The first liquid storage chamber is connected, and the second water pipe is connected with the cooling water channel.

The anti-rolling device includes a rotatably arranged upper beam and a rotary damper for applying a damping force to the upper beam when the upper beam rotates.

The rotary damper includes a housing, a rotating vane arranged in the inner cavity of the housing and connected to the upper beam, and a damping conduction member connected to the housing, and the rotating vane divides the inner cavity of the housing into The first buffer chamber and the second buffer chamber are filled with damping liquid, the first buffer chamber and the second buffer chamber communicate with the damping conduction part, and the rotating blade has the function of making the first buffer chamber and the second buffer chamber communicate with each other. The orifice connected to the second buffer cavity.

The anti-rolling device further includes a lower beam located below the upper beam and connected to the shock absorber, a guide rod connected to the lower beam, and a guide sleeve sleeved on the guide rod and connected to the upper beam.

In the vibration damping system of the present invention, by providing a heat dissipation device connected to the shock absorber, the heat dissipation device can cool down the shock absorber, avoiding the influence of the temperature on the performance of the shock absorber, and improving the vibration damping performance; at the same time, it is equipped with anti-rolling The device can improve the stability and riding comfort of the automobile body.

Description of drawings

This manual includes the following drawings, the contents shown are:

Fig. 1 is the structural representation of damping system of the present invention;

Fig. 2 is a sectional view of the shock absorber;

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

Fig. 4 is the structural representation of shock absorber;

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

Figure 6 is a schematic structural view of the anti-roll device;

Fig. 7 is a sectional view of the rotary damper;

Fig. 8 is a schematic diagram of the connection between the damping system and the vehicle body of the present invention;

2, shock absorber; 201, working cylinder; 202, oil storage cylinder; 203, the first piston; 204, the first piston rod; 205, the second piston; 206, the second Piston rod; 207, first liquid storage chamber; 208, second liquid storage chamber; 209, cooling channel; 210, inner partition; 211, elastic element; 212, circulation valve; 213, bottom valve; 214, lower suspension ring; 215, sealing ring; 216, lower accommodation cavity; 217, upper chamber; 218, lower chamber; 219, silica gel heat sink; 220, liquid passage hole; 3, heat dissipation device; 301, cooling box; 303, the first water pipe; 304, the second water pipe; 4, damping spring; 5, rotary damper; 501, shell; 502, rotating blade; 503, the first pipe; Throttle hole; 506, the first buffer cavity; 507, the second buffer cavity; 508, the damping conduction part; 509, the damper cooling fin; 6, the upper beam; 7, the lower beam; 8, the guide sleeve; 9, Guide rod; 10, seal.

Detailed ways

The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

As shown in Figures 1 to 8, the present invention provides a damping system, including a shock absorber 2, an anti-roll device connected to the shock absorber 2, and a 2 cooling device 3 for cooling.

Specifically, as shown in Figures 1 to 4, the shock absorber 2 is a two-way acting cylinder type shock absorber, and the shock absorber 2 includes a working cylinder 201, an oil storage cylinder 202 sleeved on the working cylinder 201, The lower suspension ring 214 fixedly connected with the oil storage cylinder 202, the first piston 203 arranged in the working cylinder 201, the first piston rod 204 connected with the first piston 203, the second piston 205 and the second piston 205 and the second piston 205 A piston rod 204 is connected to a second piston rod 206 . The first piston 203 is provided with a flow valve and an extension valve, and the bottom of the working cylinder 201 is provided with a bottom valve, and the bottom valve includes a compression valve and a compensation valve. The oil storage cylinder barrel 202 has a first liquid storage chamber 207 that accommodates a cooling medium and communicates with the heat sink 3. The second piston 205 is movably arranged in the first liquid storage chamber 207 for cooling the liquid outlet chamber. The media squeezes out. The working cylinder 201 and the oil storage cylinder 202 are internally hollow cylindrical structures, the working cylinder 201 and the oil storage cylinder 202 are coaxially arranged, the diameter of the working cylinder 201 is smaller than the diameter of the oil storage cylinder 202, and the working cylinder 201 and The oil storage cylinder barrel 202 has oil in it. The first piston 203 is movably arranged in the 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 and the first One end of the piston rod 204 is fixedly connected with the first piston 203, and the other end of the first piston rod 204 stretches out to the outside of the working cylinder 201 and this end of the first piston rod 204 is used to connect with the sprung mass of the automobile (i.e. the automobile) body) connection, the lower suspension ring 214 is connected with the unsprung mass of the automobile, and the lower suspension ring 214 is fixedly connected with the lower end of the oil storage cylinder barrel 202.

As shown in FIGS. 2 and 3 , the first liquid storage chamber 207 is provided inside the circular side wall of the oil storage cylinder 202 and is a circular cavity extending along the entire circumference. The side wall has a certain thickness, and there is a gap between the inner circular surface of the side wall of the oil storage cylinder 202 and the outer circular surface of the working cylinder 201, and the gap forms an oil storage chamber for containing oil. The second piston 205 is an annular structure, the second piston 205 and the oil storage cylinder 202 are coaxially arranged, the second piston 205 can move axially in the first liquid storage chamber and the first piston 203 and the second piston 205 move synchronously, the second piston rod 206 is provided with multiple and all the second piston rods 206 are distributed sequentially along the circumference of the second piston 205, the second piston rod 206 is outside the oil storage cylinder barrel 202 and the first piston rod 204 Fixed connection. One end of the second piston rod 206 is inserted into the first liquid storage chamber 207 of the oil storage cylinder barrel 202 and this end of the second piston rod 206 is fixedly connected with the second piston 205, and the other end of the second piston rod 206 extends to the oil storage cylinder The outside of the cylinder 202 and the end of the second piston rod 206 are fixedly connected with the first piston rod 204, and the second piston rod 206 is an L-shaped structure. The first liquid storage chamber 207 is filled with cooling medium, and the first liquid storage chamber 207 communicates with the cooling device 3. During the running of the vehicle, when the wheel moves closer to the vehicle body, the second piston rod 206 pushes the second piston 205 downward, The oil pressure in the first liquid storage chamber 207 rises, the second piston 205 squeezes out the cooling medium in the first liquid storage chamber 207 , and finally the cooling medium in the first liquid storage chamber flows into the heat sink 3 .

Preferably, multiple second piston rods 206 are provided and all the second piston rods 206 are evenly distributed along the circumference of the second piston 205 to ensure uniform force on the second piston 205 and improve the stability of the second piston 205 in operation. As shown in FIG. 2 and FIG. 3 , in this embodiment, there are two second piston rods 206 .

As shown in FIG. 2 , the first piston 203 has a second liquid storage chamber 208 containing a cooling medium, the first piston rod 204 has a cooling water channel 209 communicating with the second liquid storage chamber 208, and the cooling water channel 209 communicates with the heat sink 3 , The cooling channel 209 extends along the axial direction of the first piston rod 204 at the inner center of the first piston rod 204 . The cooling water channel 209 has a certain length, and the cooling water channel 209 is formed with an opening for cooling medium to pass through on the outer surface of the first piston rod 204, and the opening is located outside the working cylinder barrel 201, so that the cooling medium can flow in and out Cooling water channel 209 . The second liquid storage chamber 208 is filled with cooling medium, and the second liquid storage chamber 208 communicates with the heat sink 3 through the cooling channel 209. During the running of the vehicle, when the wheel moves closer to the vehicle body, the second piston rod 206 pushes the second piston rod 206 downward. Two pistons 205, the oil pressure in the first liquid storage chamber 207 rises, the second piston 205 squeezes out the cooling medium in the first liquid storage chamber 207, and the cooling medium in the first liquid storage chamber flows into the heat sink 3 , the oil pressure in the cooling device 3 rises, the cooling medium of the cooling device 3 will flow into the second liquid storage chamber 208 through the cooling water channel 209, and the cooling medium will receive the heat generated inside the shock absorber 2 when it gathers in the second liquid storage chamber Radiation realizes heat exchange and achieves the purpose of cooling the shock absorber 2 . Similarly, when the wheel moves away from 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 chamber 207 decreases, and the cooling medium in the second liquid storage chamber 208 flows into the cooling device through the cooling water channel 209 3, the cooling medium entering the cooling device 3 will be cooled down, and finally the cooling medium in the cooling device 3 will flow back into the first liquid storage chamber 207, thereby completing the circulation process of the cooling medium to achieve heat dissipation for the shock absorber 2 the goal of.

As shown in FIGS. 2 and 3 , the shock absorber 2 further includes a movable inner partition 210 disposed in the inner cavity of the first piston 203 and an elastic element for applying elastic force to the inner partition 210 211, the inner partition 210 divides the inner cavity of the first piston 203 into the second liquid storage chamber 208 and the lower accommodating chamber 216, the elastic element 211 is located in the lower accommodating chamber 216, and the inner partition 210 is located between the elastic element 211 and the lower accommodating chamber 216. Between cooling water channels 209. The first piston 203 is a hollow structure inside, the second liquid storage chamber 208 and the lower accommodating chamber 216 constitute the inner cavity of the first piston 203, the inner cavity of the first piston 203 is a circular cavity, and the second liquid storage The chamber 208 is located above the lower housing chamber 216, and the inner partition 210 is arranged in the inner cavity of the first piston 203 so as to be movable in the axial direction. The inner partition 210 has a circular structure and is connected to the first The piston 203 is arranged coaxially. The elastic element 211 is sandwiched between the inner partition 210 and the inner bottom surface of the lower accommodating cavity 216, and the elastic element 211 exerts an elastic force on the inner partition 210 in the axial direction, so as to push the inner partition 210 toward the direction close to the cooling water channel 209. direction to move, thereby increasing the oil pressure in the second liquid storage chamber 208 . When the wheel moved closer to the vehicle body, the cooling medium of the heat sink 3 would flow into the second liquid storage chamber 208 through the cooling channel 209, and the oil pressure in the second liquid storage chamber 208 would increase, and then enter the cooling fluid in the second liquid storage chamber 208. The medium will push down the inner partition 210 to counteract the elastic force generated by the elastic element 211 . When the wheel moves away from the vehicle body, under the action of the elastic element 211, the inner partition 210 moves upwards, and the cooling medium in the second liquid storage chamber 208 is squeezed out, and then the cooling medium in the second liquid storage chamber 208 passes through The cooling water channel 209 flows back into the heat sink 3 .

Preferably, as shown in Figure 2, in order to increase the heat dissipation effect, a silica gel cooling fin 219 is provided on the outer surface of the oil storage cylinder barrel 202 of the shock absorber 2, and the silica gel cooling fin 219 has the advantages of fast heat dissipation, low cost and cost performance high merit.

As shown in Fig. 2, Fig. 4 and Fig. 5, the heat dissipation device 3 includes a heat dissipation box 301 for accommodating the cooling medium, a first water pipe 303 connected with the heat dissipation box 301 and the oil storage cylinder barrel 202, and a first water pipe 303 connected with the heat dissipation box 301 and the first piston. The rod 204 is connected to the second water pipe 304 , the first water pipe 303 communicates with the first liquid storage chamber 207 , and the second water pipe 304 communicates with the cooling water channel 209 . The first liquid storage chamber 207 forms a liquid passage hole 220 on the outer surface of the oil storage cylinder barrel 202 to allow the cooling medium to pass through. The position of the liquid hole 220 is connected with the oil storage cylinder 202 . One end of the second water pipe 304 is connected to the cooling tank 301 , and the other end of the second water pipe 304 is connected to the first piston rod 204 at the position of the opening formed by the cooling channel 209 on the first piston rod 204 . Heat dissipation fins 302 are arranged on the outer surface of the heat dissipation box 301. After the cooling medium enters the heat dissipation box 301, it will exchange heat with the heat dissipation box 301. The cooling medium is cooled and cooled, and the cooled cooling medium then flows into the first liquid storage chamber 207 or the second liquid storage chamber 208 to achieve the purpose of cooling the shock absorber 2 .

As shown in Figure 1, Figure 6 and Figure 7, the anti-roll device includes a rotatably arranged upper beam 6, a rotary damper 5 for applying a damping force to the upper beam 6 when the upper beam 6 rotates, The lower beam 7 below the 6 and connected to the shock absorber 2, the guide rod 9 connected to the lower beam 7, and the guide sleeve 8 sleeved on the guide rod 9 and connected to the upper beam 6. The upper beam 6 is a cylinder, and the upper beam 6 is horizontally arranged, and the length direction of the upper beam 6 (that is, the axial direction of the upper beam 6) is parallel to the longitudinal direction of the automobile body, and the upper beam 6 is positioned at the bottom of the automobile body. 6 is used to be connected with the automobile body, when the body rolls, the body will drive the upper beam 6 to rotate around its own axis. The length direction of the upper beam 6 is parallel to the length direction of the lower beam 7, the lower beam 7 is connected with the lower suspension ring 214 of the shock absorber 2 or the unsprung mass of the automobile, and the length direction of the guide sleeve 8 and the guide rod 9 is parallel to that of the upper beam 7. The length directions of the crossbeam 6 and the lower crossbeam 7 are perpendicular, the guide sleeve 8 is a hollow structure inside, one end of the guide rod 9 is connected with the lower crossbeam 7, and the other end of the guide rod 9 is inserted into the inner cavity of the guide sleeve 8, The sliding guide sleeve 8 and the guide rod 9 can move relative to each other.

As shown in FIG. 6 and FIG. 7 , the rotary damper 5 includes a housing 501 , a rotating vane 502 arranged in the inner cavity of the housing 501 and connected to the upper beam 6 , and a damping conduction member 508 connected to the housing 501 , the rotating vane 502 divides the inner cavity of the housing 501 into a first buffer cavity 506 and a second buffer cavity 507, the first buffer cavity 506 and the second buffer cavity 507 are filled with damping fluid, the first buffer cavity 506 and the second buffer cavity The second buffer cavity 507 communicates with the damping conduction member 508 , and the rotating blade 502 has a throttle hole that communicates the first buffer cavity 506 and the second buffer cavity 507 . The housing 501 is a hollow structure, and the housing 501 and the lower beam 7 remain relatively fixed. The inner cavity of the housing 501 is a semicircular cavity, and the rotating blade 502 is rotatably arranged in the inner cavity of the housing 501. Among them, the rotating blade 502 is a rectangular block structure, the upper beam 6 is fixedly connected with the rotating blade 502 and the rotating blade 502 extends toward the outer side of the upper beam 6 along the radial direction of the upper beam 6 . The damping conduction part 508 is connected to the housing 501 through the first pipe 503 and the second pipe 504, and the side wall of the housing 501 is provided with a first opening communicating with the first buffer chamber 506 and a port communicating with the second buffer chamber 507. The second opening, the rotating blade 502 is located between the first opening and the second opening, the first pipe 503 is fixedly connected with the casing 501 at the first opening, and the second pipe 504 is fixed with the casing 501 at the second opening The first buffer chamber 506 communicates with the damping conducting part 508 through the first pipe 503 , and the second buffer chamber 507 communicates with the damping conducting part 508 through the second pipe 504 . When the upper beam 6 rotates, the upper beam 6 can drive the rotating blade 502 to rotate in the inner cavity of the housing 501 to change the volume of the first buffer chamber 506 and the second buffer chamber 507, so that the first buffer chamber The damping fluid in the cavity 506 or the second buffer cavity 507 is discharged outwards, thereby generating a damping force, resisting the roll of the vehicle body, and improving ride comfort.

The damping conduction part 508 has various forms, and the damping conduction part 508 is an adjustable throttle valve. The damping conduction part 508 can also use other conduction structures with damping effect. The flow rate of the damping liquid discharged from the casing 501 is restricted by the damping conducting part 508 to realize the function of buffering and damping. The throttling hole 505 is a through hole provided on the rotating blade 502 along the thickness direction of the rotating blade 502 (the thickness direction of the rotating blade 502 is perpendicular to the axial direction of the upper beam 6 in space), and the first buffer chamber 506 and the second The two buffer cavities 507 communicate through the throttling hole 505, and at least one throttling hole 505 is provided. When the vehicle is running, when the vehicle body rolls, the upper beam 6 drives the rotating blade 502 to deflect into the first buffer chamber 506, and the damping fluid in the first buffer chamber 506 flows into the damping conduction member 508 through the first pipe 503 At the same time, part of the damping fluid in the first buffer chamber 506 will enter the second buffer chamber 507 through the orifice 505, and the damping conducting part 508 will generate a damping force to slow down the roll of the vehicle body. The damping liquid flowing out from the damping conducting part 508 will enter the second buffer cavity 507 through the second pipe 504 to complete the circulation of the damping liquid.

At least one rotary damper 5 is provided. When multiple rotary dampers 5 are provided, all the rotary dampers 5 are arranged sequentially along the length direction of the upper beam 6 . Silicone cooling fins 509 are also provided outside the rotary damper to ensure the damping characteristics of the oil in the damper and prolong the service life of the hydraulic oil of the damper. As shown in Figure 6, the arrangement of the relative positions of the two rotary dampers on the upper beam 6, the blades inside the two rotary dampers are always in relative positions on the upper beam, the upper beam and the rotating blades are balanced in force, and the upper beam is extended and the fatigue life of the blades, improving the stability of the rotary damper.

The present invention has been exemplarily described above with reference to the accompanying drawings. Apparently, the specific implementation of the present invention is not limited by the above methods. As long as various insubstantial improvements are made using the method concept and technical solution of the present invention; or without improvement, the above-mentioned concept and technical solution of the present invention are directly applied to other occasions, all within the protection scope of the present invention within.

Claims (4)

1. A damping system, comprising a shock absorber and an anti-rolling device connected to the shock absorber, characterized in that: it also includes a heat dissipation device connected to the shock absorber and used to cool the shock absorber; The shock absorber includes a working cylinder, an oil storage cylinder sleeved on the working cylinder, a first piston disposed in the working cylinder, a first piston rod connected to the first piston, a second piston and a second piston connected to the second piston. The piston is connected to the second piston rod of the first piston rod. The oil storage cylinder barrel has a first liquid storage chamber that accommodates the cooling medium and communicates with the heat dissipation device. The second piston is movably arranged in the first liquid storage chamber. Used to squeeze out the cooling medium in the liquid outlet cavity; The second piston is in an annular structure, the second piston rods are provided in multiples and all the second piston rods are distributed sequentially along the circumference of the second piston, and the second piston rods are outside the oil storage cylinder barrel fixedly connected with the first piston rod; The first piston has a second liquid storage chamber containing a cooling medium, the first piston rod has a cooling water channel communicating with the second liquid storage chamber, and the cooling water channel is in communication with the heat sink; The cooling water channel extends inside the first piston rod along the axial direction of the first piston rod; The shock absorber also includes an inner partition movably arranged in the inner cavity of the first piston and an elastic element for applying an elastic force to the inner partition, and the inner partition pushes the inner partition of the first piston The inner cavity is divided into the second liquid storage cavity and the lower accommodation cavity, the elastic element is located in the lower accommodation cavity, and the inner partition is located between the elastic element and the cooling water channel; The heat dissipation device includes a heat dissipation tank for accommodating cooling medium, a first water pipe connected with the heat dissipation tank and the oil storage cylinder, and a second water pipe connected with the heat dissipation tank and the first piston rod, the first water pipe is connected with the The first liquid storage chamber is connected, and the second water pipe is connected with the cooling water channel. 2 . The damping system according to claim 1 , wherein the anti-rolling device comprises a rotatably arranged upper beam and a rotary damper for applying a damping force to the upper beam when the upper beam rotates. 3. The damping system according to claim 2, characterized in that: the rotary damper comprises a housing, a rotating vane arranged in the inner cavity of the housing and connected to the upper beam, and a rotating blade connected to the housing The damping conduction part, the rotating blade divides the inner cavity of the housing into a first buffer chamber and a second buffer chamber, the first buffer chamber and the second buffer chamber are filled with damping fluid, the first buffer chamber and the second buffer chamber The cavity communicates with the damping conduction part, and the rotating blade has a throttle hole that communicates the first buffer cavity and the second buffer cavity. 4. The damping system according to claim 2, wherein the anti-roll device further comprises a lower beam located below the upper beam and connected to the shock absorber, and a guide rod connected to the lower beam And a guide sliding sleeve sleeved on the guide rod and connected with the upper beam.

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