CN215513678U - Energy dissipation and vibration reduction device for railway vehicle and railway vehicle - Google Patents
Energy dissipation and vibration reduction device for railway vehicle and railway vehicle Download PDFInfo
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- CN215513678U CN215513678U CN202120739435.3U CN202120739435U CN215513678U CN 215513678 U CN215513678 U CN 215513678U CN 202120739435 U CN202120739435 U CN 202120739435U CN 215513678 U CN215513678 U CN 215513678U
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Abstract
The utility model provides an energy dissipation and vibration reduction device for a railway vehicle and the railway vehicle, belonging to the technical field of railway vehicles, and comprising a viscous damper and a connecting structure; the viscous damper is arranged along the left and right direction of the vehicle body of the railway vehicle; the shell of the viscous damper is fixed at the bottom of the vehicle body, and a piston rod of the viscous damper extends out of the shell along the left and right directions of the vehicle body; the connecting structure is located below the vehicle body, is connected with the extending end of the piston rod, and is also used for connecting vehicle equipment located below the vehicle body. According to the energy consumption vibration damper for the railway vehicle, the vehicle equipment is used as the mass block, the damping is provided in the transverse direction, the transverse swinging amplitude of the vehicle body can be reduced under the condition that the additional mass is not increased, the transverse swinging energy of the vehicle body is dissipated, and the critical speed, the comfort level and the stability of a railway vehicle system are effectively improved.
Description
Technical Field
The utility model belongs to the technical field of railway vehicles, and particularly relates to an energy dissipation and vibration reduction device for a railway vehicle and the railway vehicle.
Background
When a rail vehicle system runs along a rail, with the increase of running speed, wheels have periodic transverse motion characteristics on two steel rails, the balance position of transverse vibration of the vehicle is changed from an initial stable state to an unstable state, and then limit ring vibration occurs, the 'worsening' behavior of the vibration state is called vehicle system hunting instability, and the hunting is a very common transverse swing phenomenon. Too high running speed of a rail vehicle system can aggravate excitation frequency between wheel rails, generate transverse oscillation and even derail. The wheel sets, the bogie and the vehicle body of the rolling stock are elastically connected in the horizontal plane, so that the snaking of the wheel sets caused by the tread taper effect of the wheels causes the snaking of the whole rolling stock. The optimization of the power system or the use of the rail vehicle's own equipment can reduce hunting behavior.
In the prior art, the connection mode of the common vehicle equipment of the railway vehicle is that a rubber shock absorber is arranged between the equipment and a vehicle body, so that the mutual vibration interference between the equipment and the vehicle body is reduced, meanwhile, the direct rigid connection between the equipment and the vehicle body is avoided, and the service life is prolonged. However, the transverse vibration of the vehicle body cannot be weakened only by connecting the device and the vehicle body through the rubber shock absorber, and the device itself serves as a stable structure and an energy dissipation structure to contribute to the consumption of transverse swing energy without actively utilizing the inherent mass and space properties of the device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an energy dissipation and vibration reduction device for a railway vehicle, and aims to achieve the purposes of consuming transverse vibration of a vehicle body and reducing vibration transmission between equipment and the vehicle body.
In order to achieve the purpose, the utility model adopts the technical scheme that: provided is a dissipative vibration damping device for a railway vehicle, comprising:
a viscous damper provided along a left-right direction of a vehicle body of the railway vehicle; the shell of the viscous damper is fixed at the bottom of the vehicle body, and a piston rod of the viscous damper extends out of the shell along the left and right directions of the vehicle body; and
and the connecting structure is positioned below the vehicle body, is connected with the extending end of the piston rod and is also used for connecting vehicle equipment positioned below the vehicle body.
In one possible implementation, the connection structure includes:
the top end of the bracket is fixedly connected with the extending end of the piston rod;
the rubber spring is fixedly arranged on the bracket; and
and the connecting piece is used for connecting the rubber spring and the vehicle equipment in the vertical direction.
In one possible implementation, the viscous damper includes:
the shell is fixed at the bottom of the vehicle body and provided with a damping cavity for containing viscous damping fluid;
the piston is arranged in the damping cavity in a sliding mode and is connected with the piston rod; the piston is provided with a plurality of through holes which are arranged at intervals and used for enabling the viscous damping fluid to pass through; the piston divides the damping cavity into a first damping cavity and a second damping cavity;
and the two springs are respectively arranged in the first damping cavity and the second damping cavity and are arranged in a telescopic manner along the left and right directions of the vehicle body.
In some embodiments, the extending end of the piston rod is provided with a downwardly extending extension plate, and the extension plate is fixedly connected with the top end of the bracket.
In some embodiments, one end of the outer shell is connected with a fixing plate which extends upwards and is bent towards the left and right directions of the vehicle body, and a bent plate surface of the fixing plate is used for being fixedly connected with the bottom of the vehicle body.
In some embodiments, the outer periphery of the piston is fitted with a sealing ring.
In one possible implementation, the dissipative vibration damping device for a railway vehicle further comprises:
the fixing seat is used for being fixed at the bottom of the vehicle body and is provided with a cavity extending along the left and right directions of the vehicle body; the extending end of the piston rod is located in the cavity, and the extending end of the piston rod and the cavity can move relatively in the left and right directions of the vehicle body.
In some embodiments, a guide rail extending in the left-right direction of the vehicle body is arranged in the cavity, the extending end of the piston rod is rotatably connected with a roller, and the roller is in rolling contact with the guide rail.
The energy dissipation and vibration reduction device for the rail vehicle has the beneficial effects that: compared with the prior art, the energy-consuming vibration damping device for the rail vehicle is characterized in that the viscous damper is arranged at the bottom of the vehicle body, and the vehicle body and the vehicle equipment are connected through the viscous damper and the connecting structure; the automobile equipment is used as a mass block, when the wheel pair moves in a snake shape to enable the automobile body to vibrate transversely, the shell of the viscous damper moves transversely along with the automobile body, and the piston rod of the viscous damper is fixed by the automobile equipment, so that viscous damping liquid in the viscous damper can flow, and the viscous damping liquid can generate heat in the flow, so that the kinetic energy of the transverse vibration of the automobile body is converted into internal energy, and the energy is finally dissipated in the form of generating heat.
The energy-consuming vibration damping device for the railway vehicle, provided by the utility model, provides damping in the transverse direction, plays roles in reducing the transverse swing amplitude of the vehicle body and dissipating the transverse swing energy of the vehicle body under the condition of not increasing additional mass, and effectively improves the critical speed, the comfort level and the stability of a vehicle system.
The utility model also provides a railway vehicle which comprises a vehicle body, vehicle equipment positioned below the vehicle body and the energy dissipation and vibration reduction device for the railway vehicle.
The beneficial effects of the rail vehicle provided by the utility model are the same as those of the energy dissipation and vibration reduction device for the rail vehicle, and are not repeated herein.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a connection structure of an energy dissipation and vibration reduction device for a railway vehicle, a vehicle body and vehicle equipment according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural view of an energy dissipation and vibration reduction device for a railway vehicle according to an embodiment of the present invention;
fig. 3 is an exploded view of an energy dissipation and vibration damping device for a railway vehicle according to an embodiment of the present invention;
fig. 4 is a schematic view of a connection structure of the dissipative vibration damping device for a railway vehicle, a vehicle body and vehicle equipment according to an embodiment of the utility model.
In the figure: 1. a viscous damper; 11. a housing; 111. a first damping chamber; 112. a second damping chamber; 12. a piston; 121. a through hole; 13. a piston rod; 131. an extension plate; 14. a spring; 15. a fixing plate; 16. a roller; 2. a connecting structure; 21. a support; 22. a rubber spring; 23. a connecting member; 3. a fixed seat; 31. a cavity; 32. a guide rail; 4. a vehicle body; 5. provided is a vehicle device.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 to 4 together, the energy dissipation and vibration reduction device for a railway vehicle according to the present invention will now be described. The energy dissipation and vibration reduction device for the railway vehicle comprises a viscous damper 1 and a connecting structure 2. The viscous damper 1 is disposed along the left-right direction of a vehicle body 4 of the railway vehicle; the housing 11 of the viscous damper 1 is used for being fixed at the bottom of the vehicle body 4, and the piston rod 13 of the viscous damper 1 extends out of the housing 11 along the left and right directions of the vehicle body 4; the connecting structure 2 is located below the vehicle body 4, is connected to the projecting end of the piston rod 13, and is also used for connecting the vehicle equipment 5 located below the vehicle body 4.
According to the utility model, the vehicle equipment 5 is used as a mass block, when the vehicle body 4 generates transverse vibration due to the snake-shaped motion of a wheel pair, the shell 11 of the viscous damper 1 transversely moves along with the vehicle body 4, the vehicle equipment 5 is limited by the self weight, the inertia force and the viscous damper 1 and cannot immediately follow the transverse movement, the piston rod 13 of the viscous damper 1 is limited and fixed by the vehicle equipment 5, the shell 11 moves while the piston rod 13 does not move, so that the viscous damping fluid in the viscous damper 1 flows, the viscous damping fluid generates heat in the flow, the kinetic energy of the transverse vibration of the vehicle body 4 is converted into the potential energy of the movement of the shell 11 and then into internal energy, and the energy is finally dissipated in the form of generated heat, so that the transverse instantaneous interaction force between a vehicle system and a track is reduced.
Compared with the prior art, the energy-consuming vibration damping device for the rail vehicle, provided by the utility model, has the advantages that the viscous damper 1 and the connecting structure 2 are used for connecting the vehicle body 4 and the vehicle equipment 5, so that the vehicle body 4 and the vehicle equipment 5 are in elastic connection, and the self structure of the vehicle body 4 and the self structure of the vehicle equipment 5 can be protected; the existing vehicle equipment 5 is used as a mass block, the viscous dampers 1 with proper parameters and quantity are matched through theoretical calculation according to the space parameters, self parameters, external excitation parameters and the like of the vehicle equipment 5, the transverse swinging amplitude of the vehicle body 4 is reduced under the condition that additional mass is not added, the transverse swinging energy of the vehicle body 4 is dissipated, and the critical speed, the comfort level and the stability of a vehicle system are effectively improved.
In addition, the energy-consuming and vibration-damping device for the rail vehicle is a passive energy-consuming device, is not restricted by hysteresis of system software and hardware, is safe and reliable in a maintenance period after the design and installation are finished, is simple and easy to maintain, has low manufacturing cost, and is suitable for being applied to various rail vehicle systems.
In some embodiments, the connecting structure 2 may adopt the structure shown in fig. 2 and 3. Referring to fig. 2 and 3, the connecting structure 2 includes a bracket 21, a rubber spring 22 and a connecting member 23, and the top end of the bracket 21 is fixedly connected with the extending end of the piston rod 13; the rubber spring 22 is fixedly arranged on the bracket 21; the connecting member 23 connects the rubber spring 22 and the vehicle equipment 5 in the vertical direction.
Since the connecting structure 2 is provided with the rubber spring 22, the connecting structure 2 acts as a rubber damper for reducing the vibration interaction between the vehicle body 4 and the vehicle equipment 5, and plays a role of damping vibration in the up-down direction. The characteristics of vehicle traction, braking and the like can not be influenced in the running direction and the up-down direction of the vehicle.
The rubber spring 22 may be fixed inside the bracket 21 or may be fixed to the bottom surface of the bracket 21. Of course, in order to save the installation space and protect the rubber spring 22 from leakage, the rubber spring 22 is preferably disposed inside the bracket 21, as shown in fig. 1 and 2.
The connecting member 23 may be simplified as a fastening bolt passing through the rubber spring 22 from top to bottom, and as shown in fig. 1 and 2, the rubber spring 22, the bracket 21, and the vehicle equipment 5 are fixed together by the fastening bolt. Of course, the connecting member 23 may be designed to have other matching structures according to the specific structure of the top surface of the vehicle device 5.
In some embodiments, the viscous damper 1 may be configured as shown in fig. 2 and 3. Referring to fig. 2 and 3, the viscous damper 1 includes the above-described housing 11, a piston 12, and two springs 14. The shell 11 is used for being fixed at the bottom of the vehicle body 4, and along with the movement of the vehicle body 4, the shell 11 is provided with a damping cavity for containing viscous damping fluid; piston 12 slides and sets up in the damping cavity, and the outer peripheral face of piston 12 contacts with the internal perisporium of shell 11, and the periphery cover of piston 12 is equipped with the sealing washer. The piston rod 13 is connected; the piston 12 is provided with a plurality of through holes 121 which are arranged at intervals and used for enabling the viscous damping fluid to pass through; the piston 12 divides the damping cavity into a first damping cavity 111 and a second damping cavity 112; the two springs 14 are respectively disposed in the first damping chamber 111 and the second damping chamber 112, and are both disposed to extend and contract in the left-right direction of the vehicle body 4, and both ends of the spring 14 are respectively abutted to the inner walls of the piston 12 and the housing 11.
When the wheel pair moves in a snake shape to enable the vehicle body 4 to vibrate transversely, the shell 11 moves transversely along with the vehicle body 4, the vehicle equipment 5 is limited by self weight, inertia force and the viscous damper 1 and cannot move transversely at once, the piston rod 13 is limited and fixed by the vehicle equipment 5, the shell 11 moves while the piston rod 13 and the piston 12 do not move, so that the space of the first damping cavity 111 and the space of the second damping cavity 112 change, the viscous damping fluid flows between the first damping cavity 111 and the second damping cavity 112 along with the change of the space, and the viscous damping fluid generates heat in the flowing process and the process of passing through the through hole 121 under the limitation of the viscous damping fluid, and the ordered conversion of kinetic energy, potential energy and internal energy is realized.
In order to ensure a stable connection between the piston rod 13 and the bracket 21, on the basis of the above embodiment, the extending end of the piston rod 13 is provided with an extending plate 131 extending downwards, and the extending plate 131 is used for being fixedly connected with the top end of the bracket 21, as shown in fig. 1 and fig. 2.
Because the support 21 is of a three-dimensional structure, after the extension plate 131 is added, on one hand, the structure of the support 21 can be simplified (the support 21 can be fixed with the extension plate 131 without complex design), and on the other hand, stable connection between the piston rod 13 and the support 21 can be ensured.
In some embodiments, the housing 11 may be configured as shown in FIG. 3. Referring to fig. 3, one end of the housing 11 is connected to a fixing plate 15 extending upward and bending in the left-right direction of the vehicle body 4, and a bending plate surface of the fixing plate 15 is used for being fixedly connected with the bottom of the vehicle body 4.
Specifically, the fixed plate 15 is fixed at one end of the housing 11, and the fixed plate 15 includes a horizontal plate whose plate surface is parallel to the left-right direction and a vertical plate whose plate surface is parallel to the up-down direction, the horizontal plate being in contact with the bottom of the vehicle body 4, and the horizontal plate being used for fixedly connecting with the vehicle body 4. The vertical plate is used for connection with the housing 11.
Since the horizontal plate can contact with the bottom of the vehicle body 4, the connection area is increased, and therefore, the stable connection between the housing 11 and the vehicle body 4 can be ensured by adding the fixing plate 15.
Because the viscous damper 1 can move transversely along with the vehicle body 4 and bear the vertical acting force of the connecting structure 2, in order to ensure that the piston rod 13 can be in a stable state and is not driven by the connecting structure 2 and the vehicle equipment 5 to deflect downwards, in some embodiments, the energy dissipation and vibration reduction device for the railway vehicle further comprises a fixed seat 3, the fixed seat 3 is used for being fixed at the bottom of the vehicle body 4, and the fixed seat 3 is provided with a cavity 31 extending along the left and right directions of the vehicle body 4; the protruding end of the piston rod 13 is located in the cavity 31, and the protruding end of the piston rod 13 and the cavity 31 are relatively movable in the left-right direction of the vehicle body 4.
The fixed seat 3 is fixed at the bottom of the vehicle body 4 and moves along with the vehicle body 4, and the extending end of the piston rod 13 extends into the cavity 31, and the cavity 31 supports the piston rod 13, so that the piston rod 13 is limited to deflect downwards.
It should be noted that, in order to ensure that the piston rod 13 is connected with the connecting structure 2, the bottom surface of the fixing seat 3 has an opening communicated with the cavity 31, and the extending end of the piston rod 13 can also extend downwards out of the opening to be connected with the top end of the connecting structure 2, or the top end of the connecting structure 2 can extend into the cavity 31 through the opening to be connected with the piston rod 13.
In the embodiment shown in fig. 2, the connection to the bracket 21 is achieved by extending the plate 131 out of the opening.
In order to further ensure that the piston rod 13 is stable when the fixed seat 3 and the piston rod 13 move relatively, on the basis of the above embodiment, the cavity 31 is provided with the guide rail 32 extending along the left-right direction of the vehicle body 4, the extending end of the piston rod 13 is rotatably connected with the roller 16, and the roller 16 is in rolling contact with the guide rail 32.
When the fixed seat 3 moves transversely, the fixed seat 3 can enable the roller 16 to rotate, the roller 16 and the guide rail 32 are in rolling contact, and compared with sliding contact, friction force of the rolling contact is small, and friction damage to the piston rod 13 cannot be caused directly.
The utility model also provides a railway vehicle which comprises a vehicle body 4, vehicle equipment 5 positioned below the vehicle body 4 and the energy dissipation and vibration reduction device for the railway vehicle.
Compared with the prior art, the energy-consuming vibration damping device for the rail vehicle, provided by the utility model, has the advantages that the viscous damper 1 and the connecting structure 2 are used for connecting the vehicle body 4 and the vehicle equipment 5, so that the vehicle body 4 and the vehicle equipment 5 are in elastic connection, and the self structure of the vehicle body 4 and the self structure of the vehicle equipment 5 can be protected; the existing vehicle equipment 5 is used as a mass block, the viscous dampers 1 with proper parameters and quantity are matched through theoretical calculation according to the space parameters, self parameters, external excitation parameters and the like of the vehicle equipment 5, the transverse swinging amplitude of the vehicle body 4 is reduced under the condition that additional mass is not added, the transverse swinging energy of the vehicle body 4 is dissipated, and the critical speed, the comfort level and the stability of a vehicle system are effectively improved.
In addition, the energy-consuming and vibration-damping device for the rail vehicle is a passive energy-consuming device, is not restricted by hysteresis of system software and hardware, is safe and reliable in a maintenance period after the design and installation are finished, is simple and easy to maintain, has low manufacturing cost, and is suitable for being applied to various rail vehicle systems.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. Dissipative vibration damping device for a rail vehicle, characterized in that it comprises:
a viscous damper provided along a left-right direction of a vehicle body of the railway vehicle; the shell of the viscous damper is fixed at the bottom of the vehicle body, and a piston rod of the viscous damper extends out of the shell along the left and right directions of the vehicle body; and
and the connecting structure is positioned below the vehicle body, is connected with the extending end of the piston rod and is also used for connecting vehicle equipment positioned below the vehicle body.
2. The dissipative vibration damping device for railway vehicles according to claim 1, wherein the connecting structure comprises:
the top end of the bracket is fixedly connected with the extending end of the piston rod;
the rubber spring is fixedly arranged on the bracket; and
and the connecting piece is used for connecting the rubber spring and the vehicle equipment in the vertical direction.
3. The dissipative vibration damping device for railway vehicles according to claim 2, wherein the viscous damper comprises:
the shell is fixed at the bottom of the vehicle body and provided with a damping cavity for containing viscous damping fluid;
the piston is arranged in the damping cavity in a sliding mode and is connected with the piston rod; the piston is provided with a plurality of through holes which are arranged at intervals and used for enabling the viscous damping fluid to pass through; the piston divides the damping cavity into a first damping cavity and a second damping cavity;
and the two springs are respectively arranged in the first damping cavity and the second damping cavity and are arranged in a telescopic manner along the left and right directions of the vehicle body.
4. The dissipative vibration damping device according to claim 3, wherein the extending end of the piston rod is provided with an extending plate extending downwards, and the extending plate is fixedly connected with the top end of the bracket.
5. The dissipative vibration damping device according to claim 3, wherein one end of the housing is connected to a fixing plate extending upward and bent in the left-right direction of the car body, and the bent plate surface of the fixing plate is fixedly connected to the bottom of the car body.
6. The dissipative vibration damping device according to claim 3, wherein the piston is provided with a sealing ring around the outer circumference thereof.
7. The dissipative vibration damping device according to any of claims 1 to 6, wherein the dissipative vibration damping device for a rail vehicle further comprises:
the fixing seat is used for being fixed at the bottom of the vehicle body and is provided with a cavity extending along the left and right directions of the vehicle body; the extending end of the piston rod is located in the cavity, and the extending end of the piston rod and the cavity can move relatively in the left and right directions of the vehicle body.
8. The dissipative vibration damping device according to claim 7, wherein a guide rail extending in the left-right direction of the vehicle body is provided in the cavity, and a roller is rotatably connected to the extending end of the piston rod and is in rolling contact with the guide rail.
9. A rail vehicle, comprising a vehicle body, a piece of vehicular equipment located below the vehicle body, and the dissipative vibration damping device according to any of claims 1 to 8 for a rail vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120739435.3U CN215513678U (en) | 2021-04-12 | 2021-04-12 | Energy dissipation and vibration reduction device for railway vehicle and railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120739435.3U CN215513678U (en) | 2021-04-12 | 2021-04-12 | Energy dissipation and vibration reduction device for railway vehicle and railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215513678U true CN215513678U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120739435.3U Active CN215513678U (en) | 2021-04-12 | 2021-04-12 | Energy dissipation and vibration reduction device for railway vehicle and railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215513678U (en) |
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2021
- 2021-04-12 CN CN202120739435.3U patent/CN215513678U/en active Active
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