CN213948432U - Hydro-pneumatic suspension system suitable for rail vehicle - Google Patents
Hydro-pneumatic suspension system suitable for rail vehicle Download PDFInfo
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- CN213948432U CN213948432U CN202023105329.4U CN202023105329U CN213948432U CN 213948432 U CN213948432 U CN 213948432U CN 202023105329 U CN202023105329 U CN 202023105329U CN 213948432 U CN213948432 U CN 213948432U
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Abstract
The utility model relates to an oil gas suspension system suitable for rail vehicle, including a plurality of air springs that set up in rail vehicle bottom air spring below be provided with the pneumatic cylinder, the pneumatic cylinder on set up fluid infusion balance unit, the pneumatic cylinder pass through fluid infusion balance unit and carry out the altitude compensation in vertical direction. After the system is adopted, the hydraulic cylinder is controlled to compensate the height deviation of the air spring caused by the distortion deformation, so that the whole rail vehicle can stably run without inclination; the height sensor is used for detecting, and the hydraulic cylinder is driven by the liquid supplementing balance unit, so that real-time automatic compensation can be realized, and the safety of the railway vehicle during operation is improved; meanwhile, the system has the convenience and the comfort of an air suspension system, and the internal accessories of the system are fewer, so that the bottom space of the rail vehicle is not occupied, and the application range of the system is widened.
Description
Technical Field
The utility model belongs to the technical field of the rail vehicle technique and specifically relates to an oil gas suspension system suitable for rail vehicle is related to.
Background
Along with the process of urbanization, road congestion appears, more and more people choose to go out by public transport, so that large-scale construction of rail transit is carried out in cities, straddle-type monorail cars are often used for urban public transport, the most common suspension system of the rail cars is formed by two-stage suspension, the first-stage suspension is formed by connecting wheel pairs and bogies through steel springs, the second-stage suspension is formed by connecting the bogies with car bodies, and the second-stage suspension is mainly used for easing the movement between the bogies and the car bodies. Due to the technical characteristics, the secondary suspension in the vehicle generally adopts an air suspension system or a rubber hourglass spring structure.
The air suspension system is adopted, and has good riding convenience and comfortableness due to the excellent shock absorption effect, but the system needs more pipeline accessories, influences the weight of the railway vehicle and the equipment installation space, and is easy to cause damage risks, and the vehicle inclines and influences use due to different heights of different air springs caused by different vehicle-mounted weights; the rubber hourglass spring structure is adopted, and the convenience and the comfort of riding are greatly reduced although the structure is relatively simple.
Disclosure of Invention
The utility model aims to solve the technical problem that an oil gas suspension system suitable for rail vehicle who compensates is carried out at direction of height to the air spring after warping is provided.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an oil gas suspension system suitable for rail vehicle, includes a plurality of air springs that set up in rail vehicle bottom air spring below be provided with the pneumatic cylinder, the pneumatic cylinder on set up fluid infusion balancing unit, the pneumatic cylinder pass through fluid infusion balancing unit and carry out height compensation in vertical direction.
Further specifically, the fluid infusion balancing unit comprises a pump source device, a control device and a storage device, the storage device is connected with the pump source device and the control device and stores oil in the storage device, the pump source device provides high-pressure oil for the hydraulic cylinder, and the control device is used for controlling fluid infusion and fluid drainage of the hydraulic cylinder.
Further specifically, the pump source device comprises a liquid inlet connected with the storage device and a liquid outlet connected with the control device, a pipeline is arranged between the liquid inlet and the liquid outlet, an oil pump is arranged on the pipeline, a safety valve is arranged at the position of the liquid outlet and flows back into the storage device, and a pressure switch is arranged at the position of the liquid outlet.
Further specifically, an energy accumulator and a pressure sensor are arranged at the liquid outlet.
Further specifically, the control device is a two-position three-way electromagnetic valve, an inlet of the two-position three-way electromagnetic valve is connected to the liquid outlet of the pump source device, a first outlet of the two-position three-way electromagnetic valve is connected to the hydraulic cylinder, and a second outlet of the two-position three-way electromagnetic valve is connected to the storage device.
More specifically, the second outlet is connected with the storage device through a one-way valve and a filter in sequence.
More specifically, the hydraulic cylinder has two ports including a first port located at the bottom and a second port located at the top, the first port is connected with the control device, and the second port is provided with a throttle valve and communicated with the storage device.
Further specifically, a height sensor for detecting the height of the rail vehicle is arranged beside each air spring, and the height sensor receives a height signal and controls the liquid supplementing balancing unit to automatically compensate the height.
More specifically, a buffer rubber is arranged between the hydraulic cylinder and the air spring.
More specifically, a flange for fixing is arranged on the cylinder body of the hydraulic cylinder.
The utility model has the advantages that: after the system is adopted, the hydraulic cylinder is controlled to compensate the height deviation of the air spring caused by the distortion deformation, so that the whole rail vehicle can stably run without inclination; the height sensor is used for detecting, and the hydraulic cylinder is driven by the liquid supplementing balance unit, so that real-time automatic compensation can be realized, and the safety of the railway vehicle during operation is improved; meanwhile, the system has the convenience and the comfort of an air suspension system, and the internal accessories of the system are fewer, so that the bottom space of the rail vehicle is not occupied, and the application range of the system is widened.
Drawings
FIG. 1 is a schematic view of the air spring and hydraulic cylinder combination of the present invention;
FIG. 2 is a schematic view of the pressurizing of the fluid infusion balancing unit of the present invention;
fig. 3 is a schematic view of the pressure relief of the fluid infusion balancing unit of the present invention.
In the figure: 1. an air spring; 2. a hydraulic cylinder; 3. a cushion rubber; 4. a flange; 5. a fluid infusion balancing unit; 21. a second interface; 22. a first interface; 23. an upper chamber; 24. a lower chamber; 51. a pump source device; 52. a two-position three-way electromagnetic valve; 53. an oil tank; 54. an accumulator; 55. a pressure sensor; 56. a one-way valve; 57. a filter; 58. a throttle valve; 59. a height sensor; 511. a liquid inlet; 512. a liquid outlet; 513. an oil pump; 514. a safety valve; 515. and (6) a pressure switch.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to perform more detailed description on the technical solution in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the invention.
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the hydro-pneumatic suspension system suitable for the rail vehicle comprises a plurality of air springs 1 arranged at the bottom of the rail vehicle, wherein inert gas is filled in the air springs 1 and certain pressure is kept, and the air springs 1 are used for supporting the body of the rail vehicle and have a shock absorption effect; because the weight and the stress of the vehicle body 1 are inconsistent, the deformation and the torsion of each air spring 1 are inconsistent, and the vehicle body is unbalanced, a hydraulic cylinder 2 is arranged below each air spring 1, a liquid supplementing balancing unit 5 is arranged on each hydraulic cylinder 2, and the hydraulic cylinders 2 are subjected to height compensation in the vertical direction through the liquid supplementing balancing units 5; the fluid infusion balancing unit 5 is controlled by a CCU central control unit in the vehicle body.
Because the shaft of the hydraulic cylinder 2 is contacted with the air spring 1, in order to uniformly distribute the supporting force of the hydraulic cylinder 2 on the air spring 1 and reduce the rigid contact between the shaft of the hydraulic cylinder 2 and the air spring 1, the buffer rubber 3 is arranged between the shaft of the hydraulic cylinder 2 and the air spring 1, the top of the buffer rubber 3 can be designed in a profiling way, and the top of the buffer rubber 3 is uniformly contacted with the air spring 1 as much as possible; further, to facilitate mounting of the hydraulic cylinder 2, a flange 4 is fixed to the cylinder body of the hydraulic cylinder 2, and the flange 4 is directly fixed to a bogie of the railway vehicle by a screw.
The bottom of each air spring 1 is provided with a buffer rubber 3 and a hydraulic cylinder 2, and each hydraulic cylinder 2 is correspondingly and independently used for height compensation.
The above structure is controlled by the fluid infusion balancing unit 5, as shown in fig. 2 and fig. 3, the fluid infusion balancing unit 5 includes a pump source device 51, a control device and a storage device, the storage device is connected with the pump source device 51 and the control device and stores oil inside, the pump source device 51 provides high-pressure oil for the hydraulic cylinder 1, the control device is used for controlling fluid infusion and fluid discharge of the hydraulic cylinder 2, the storage device is a sealed oil tank 53, an outlet of the oil tank 53 is connected to the pump source device 51, and an inlet of the oil tank 53 is connected to the control device.
The pump source device 51 comprises a liquid inlet 511 connected with the storage device and a liquid outlet 512 connected with the control device, a pipeline is arranged between the liquid inlet 511 and the liquid outlet 512, an oil pump 513 is arranged on the pipeline, the oil pump 513 sucks oil in the oil tank 53 through the liquid inlet 511 and discharges the oil into the control device through the liquid outlet 512, a safety valve 514 is arranged at the position of the liquid outlet 512 and flows back into the storage device, a pressure switch 515 is arranged at the position of the liquid outlet 512, and an accumulator 54 and a pressure sensor 55 are arranged at the position of the liquid outlet 512. The safety valve 514 is internally provided with the highest oil pressure value, and when the oil pressure pumped by the oil pump 513 is ultrahigh and the highest oil pressure value is high, the safety valve 514 is opened so that the oil liquid can rapidly flow back to the oil tank 53 to realize the reduction of the oil pressure; the pressure switch 515 is used for controlling the lowest value of the oil pressure, when the oil pump 513 starts to pump oil, the pressure of the oil slowly rises, and when the oil reaches and exceeds the lowest value of the oil pressure, the pressure switch 515 opens the oil to be conveyed into the control device through a pipeline; after the pressure switch 515 is turned on, high-pressure oil is supplied to the hydraulic cylinder 2 through the control device, and high-pressure oil is supplemented into the energy accumulator 54, so that after the CCU central control unit controls the pressure switch 515 and the oil pump 513 to be turned off, the energy accumulator 54 can continuously keep the pressure of the hydraulic cylinder 2 unchanged, and the oil pump 513 does not need to work continuously; the pressure sensor 55 is arranged to operate by bleeding through the control device when the oil pressure is too high.
The control device is a two-position three-way electromagnetic valve 52, namely, the control device comprises an inlet and two outlets, the two outlets are respectively a first outlet and a second outlet, the inlet of the two-position three-way electromagnetic valve 52 is connected to the liquid outlet 512 of the pump source device 51, the first outlet of the two-position three-way electromagnetic valve 52 is connected to the hydraulic cylinder 2, and the second outlet is connected to the storage device; the two-position three-way electromagnetic valve 52 has two working positions, namely a pressurization working position and a pressure relief working position, when the two working positions are the pressurization working positions, the inlet is communicated with the first outlet, and high-pressure oil enters the hydraulic cylinder 2 to adjust the axial upward movement of the hydraulic cylinder 2 so as to compensate the height; when being the pressure release work position, first export and second export intercommunication, the import is closed this moment, and fluid in the pneumatic cylinder 2 returns to in the oil tank 53 through first export and second export, can accomplish the pressure release operation, and the axial of pneumatic cylinder 2 moves down simultaneously.
Further, in order to prevent the oil in the oil tank 53 from flowing back to the two-position three-way valve 52 and clean the oil, the second outlet and the storage device are connected through a check valve 56 and a filter 57 in this order.
The hydraulic cylinder 2 is provided with two interfaces comprising a first interface 22 positioned at the bottom and a second interface 21 positioned at the top, the first interface 22 is connected with a control device, a throttle valve 58 is arranged on the second interface 21 and communicated with a storage device, and the throttle valve 58 can relieve and maintain the pressure of an upper cavity of the hydraulic cylinder 2.
And a height sensor 59 for detecting the height of the rail vehicle is arranged beside each air spring 1, and the height sensor 59 receives a height signal and controls the liquid supplementing and balancing unit 5 to automatically compensate the height.
Based on above-mentioned system, can have two kinds of implementation, first kind of air spring 1 can have the multiunit with pneumatic cylinder 2, all provides power through same fluid infusion balancing unit 5, and second kind of air spring 1 has the multiunit with pneumatic cylinder 2, and every group all provides power through different fluid infusion balancing unit 5, carries out independent control.
The working process is described in detail below by taking a first implementation manner as an example, and a second implementation manner is similar to the first implementation manner.
Firstly, the height sensor 59 detects that the height of one or more air springs 1 changes, at the moment, the height sensor 59 transmits a height signal to the CCU central control unit, the CCU central control unit compares signals detected by all the height sensors 59 of the same carriage, calculates the relative deviation of each air spring 1, and then adjusts the height in the vertical direction through the hydraulic cylinder 2 to enable the heights of the air springs 1 to be consistent.
In the process of adjusting the height, if a certain air spring 1 needs to be lifted, pressurization operation needs to be carried out on the hydraulic cylinder 2 at this time, the CCU central control unit starts the oil pump 513, the oil pump 513 works to output oil to the liquid outlet 512, when the oil pressure of the liquid outlet 512 is increased to a certain pressure (set in the CCU central control unit), the pressure switch 515 is opened to output high-pressure oil to the two-position three-way electromagnetic valve 52, at this time, the CCU central control unit controls the inlet of the two-position three-way electromagnetic valve 52 to be communicated with the first outlet and supplies high-pressure oil (shown in fig. 2) to the lower cavity 24 of the hydraulic cylinder 2, so that the hydraulic cylinder 2 is pushed upwards in the axial direction to push the air spring 1 to move upwards, at this time, the throttle valve 58 is opened to discharge the oil in the upper cavity 23, and when the height sensor 59 detects that the height meets the requirement, the pressure switch 515 is closed, then the oil pump 513 is closed, at this time, the pressure in the lower cavity 24 of the hydraulic cylinder 2 is maintained through the energy accumulator 54, while the pressure in the lower chamber 24 of the hydraulic cylinder 2 is continuously detected by the pressure sensor 59, if the pressure becomes small, the CCU central control unit turns on the oil pump 513 to continue the pressurizing operation.
In the process of adjusting the height, if a certain air spring 1 needs to be lowered, the hydraulic cylinder 2 needs to be decompressed, the CCU central control unit controls the first outlet and the second outlet of the two-position three-way solenoid valve 52 to be communicated (as shown in fig. 3), so that the lower cavity 24 of the hydraulic cylinder 2 is communicated with the oil tank 53, high-pressure oil flows back to the oil tank 53 through the check valve 56 and the filter 57, and meanwhile, the throttle valve 58 is ensured to be closed, so that safety accidents caused by too fast height change of the hydraulic cylinder 2 in the process of decompressing are avoided, after the height sensor 59 detects that the height meets the requirement, the CCU central control unit controls the inlet of the two-position three-way solenoid valve 52 to be communicated with the first outlet, and meanwhile, the pressure switch 515 and the oil pump 513 are ensured to be closed, and the oil pressure in the lower cavity 24 of the hydraulic cylinder 2 is maintained at this time.
In conclusion, through the arrangement of the system and the adjustment of the method, the hydraulic cylinder 2 is controlled to compensate for the height deviation of the air spring 1 caused by the distortion deformation, so that the whole rail vehicle runs stably without inclination; the height sensor 59 is used for detecting, and the hydraulic cylinder 2 is driven by the liquid supplementing balance unit 5, so that real-time automatic compensation can be realized, and the safety of the railway vehicle in operation is improved; meanwhile, the system has the convenience and the comfort of an air suspension system, and the internal accessories of the system are fewer, so that the bottom space of the rail vehicle is not occupied, and the application range of the system is widened.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form, and any simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an oil gas suspension system suitable for rail vehicle, includes a plurality of air spring (1) that set up in rail vehicle bottom, its characterized in that air spring (1) below be provided with pneumatic cylinder (2), pneumatic cylinder (2) on set up fluid infusion balancing unit (5), pneumatic cylinder (2) through fluid infusion balancing unit (5) carry out height compensation on vertical direction.
2. The hydro-pneumatic suspension system for a railway vehicle according to claim 1, wherein the fluid replacement balancing unit (5) comprises a pump source device (51), a control device and a storage device, the storage device is connected with the pump source device (51) and the control device and internally stores oil, the pump source device (51) supplies high-pressure oil to the hydraulic cylinder (2), and the control device is used for controlling fluid replacement and fluid discharge of the hydraulic cylinder (2).
3. The hydro-pneumatic suspension system for a rail vehicle as defined in claim 2 wherein said pump source means (51) comprises an inlet (511) for connection to a storage means and an outlet (512) for connection to a control means, a conduit being provided between said inlet (511) and said outlet (512) and an oil pump (513) being provided in said conduit, a relief valve (514) being provided at said outlet (512) for returning to said storage means, and a pressure switch (515) being provided at said outlet (512).
4. Hydro-pneumatic suspension system for a rail vehicle according to claim 3, characterized in that an accumulator (54) and a pressure sensor (55) are provided at the location of the liquid outlet (512).
5. The hydro-pneumatic suspension system suitable for a rail vehicle of claim 2, wherein the control device is a two-position three-way solenoid valve (52), an inlet of the two-position three-way solenoid valve (52) is connected to a liquid outlet (512) of the pump source device (51), a first outlet of the two-position three-way solenoid valve (52) is connected to the hydraulic cylinder (2), and a second outlet of the two-position three-way solenoid valve is connected to the storage device.
6. Hydro-pneumatic suspension system for a rail vehicle according to claim 5, characterised in that said second outlet is connected to the storage device, in turn, through a non-return valve (56) and a filter (57).
7. Hydro-pneumatic suspension system for a rail vehicle according to claim 2, characterized in that said hydraulic cylinder (2) has two ports comprising a first port (22) at the bottom and a second port (21) at the top, said first port (22) being connected to a control device, said second port (21) being provided with a throttle valve (58) and being in communication with a storage device.
8. Hydro-pneumatic suspension system for rail vehicles according to claim 1, characterized in that a height sensor (59) for detecting the height of the rail vehicle is arranged beside each air spring (1), and the height sensor (59) receives a height signal and controls the fluid replacement balancing unit (5) to automatically compensate for the height.
9. Hydro-pneumatic suspension system for rail vehicles according to claim 1, characterized in that a damping rubber (3) is arranged between the hydraulic cylinder (2) and the air spring (1).
10. Hydro-pneumatic suspension system for a rail vehicle according to claim 1, characterized in that a flange (4) for fixing is provided on the cylinder body of the hydraulic cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023105329.4U CN213948432U (en) | 2020-12-21 | 2020-12-21 | Hydro-pneumatic suspension system suitable for rail vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023105329.4U CN213948432U (en) | 2020-12-21 | 2020-12-21 | Hydro-pneumatic suspension system suitable for rail vehicle |
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| CN213948432U true CN213948432U (en) | 2021-08-13 |
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| CN202023105329.4U Active CN213948432U (en) | 2020-12-21 | 2020-12-21 | Hydro-pneumatic suspension system suitable for rail vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4357217A1 (en) * | 2022-10-17 | 2024-04-24 | ALSTOM Holdings | Bogie with improved secondary suspension system, and railway vehicle comprising such bogie |
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2020
- 2020-12-21 CN CN202023105329.4U patent/CN213948432U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4357217A1 (en) * | 2022-10-17 | 2024-04-24 | ALSTOM Holdings | Bogie with improved secondary suspension system, and railway vehicle comprising such bogie |
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