Suspension system, method and suspended rail vehicle

Abstract

This invention provides a suspension system, method, and suspended rail vehicle for a suspended rail vehicle. The system includes: an air spring disposed in the suspension beam of the suspended rail vehicle, the suspension beam having multiple independent auxiliary air chambers formed inside, each auxiliary air chamber corresponding to an air spring; and a valve assembly disposed in the air passage connecting the air spring and the auxiliary air chambers, used to adjust the communication state between the air spring, the auxiliary air chambers, and the external environment, thereby regulating the air pressure within the air spring. This invention, by setting the cavity of the suspension beam as an auxiliary air chamber for the air spring, ensures the air pressure regulation requirements within the air spring while reducing the overall vehicle weight.

Description

Technical Field

[0001] This invention relates to the field of rail vehicle technology, and more particularly to a suspension system, method, and suspended rail vehicle. Background Technology

[0002] In existing suspended rail vehicles, the air compressor is directly connected to the air spring to inflate it. This setup requires a separate air compressor, which increases the overall weight of the vehicle. Summary of the Invention

[0003] This invention provides a suspension system, method, and suspended rail vehicle to solve the problem that existing suspended rail vehicles have an air compressor that is directly connected to the air spring to inflate the air spring. This setup requires a separate air compressor, which increases the overall weight of the vehicle.

[0004] According to a first aspect of the present invention, a suspension system for a suspended rail vehicle includes: an air spring disposed on a suspension beam of the suspended rail vehicle, wherein a plurality of independent auxiliary air chambers are formed inside the suspension beam, and the auxiliary air chambers are disposed in a one-to-one correspondence with the air spring; and a valve assembly disposed on an air passage connecting the air spring and the auxiliary air chambers, for adjusting the communication state between the air spring, the auxiliary air chambers and the external environment, thereby adjusting the air pressure inside the air spring.

[0005] According to one embodiment of the present invention, the valve body assembly includes: a differential pressure valve, which is connected to two adjacent auxiliary air chambers via a pipeline, for adjusting the communication state between the two adjacent auxiliary air chambers according to the air pressure of the air spring and / or the air pressure difference in the auxiliary air chambers.

[0006] Specifically, this embodiment provides an implementation method for a differential pressure valve.

[0007] According to one embodiment of the present invention, the valve body assembly includes: a safety valve, which is configured one-to-one with the auxiliary air chamber, for adjusting the communication state between the auxiliary air chamber corresponding to the safety valve and the external environment according to the air pressure of the air spring and / or the air pressure in the auxiliary air chamber.

[0008] Specifically, this embodiment provides an implementation method for a safety valve.

[0009] According to one embodiment of the present invention, the valve body assembly includes: a differential pressure valve, connected to two adjacent auxiliary air chambers via a pipeline, for adjusting the communication state between the two adjacent auxiliary air chambers according to the air pressure of the air spring and / or the air pressure difference in the auxiliary air chambers; and a safety valve, corresponding to each of the auxiliary air chambers, for adjusting the communication state between the auxiliary air chamber corresponding to the safety valve and the external environment according to the air pressure of the air spring and / or the air pressure in the auxiliary air chambers.

[0010] Specifically, this embodiment provides an implementation of a differential pressure valve and a safety valve.

[0011] According to one embodiment of the present invention, the valve body assembly further includes a height valve, which is connected to the air spring via a pipeline, for charging or discharging air from the air spring.

[0012] Specifically, this embodiment provides an implementation of a height valve.

[0013] According to a second aspect of the present invention, a control method for the suspension system of the above-described suspended rail vehicle includes: The spatial attitude characteristics of the suspended rail vehicle and the setting area characteristics of the height valve are obtained. The spatial attitude characteristics include at least the center of gravity characteristics of the suspended rail vehicle, and the setting area characteristics are the safe range of height change of the suspended rail vehicle set by the height valve. An adjustment decision is generated based on the spatial attitude characteristics and the set area characteristics, and the adjustment decision is used to adjust the wind pressure in the air spring.

[0014] According to one embodiment of the present invention, the step of generating adjustment decisions based on the features of the defined region specifically includes: When the spatial attitude feature is outside the safe range of the set area feature identifier, the first instantaneous wind pressure feature value inside the air spring is obtained; Based on the first instantaneous wind pressure characteristic value, it is determined whether the air supply side or the air exhaust side of the height valve is open. When the air supply side is open, the air spring is charged with air, and when the air exhaust side is open, the air spring is vented.

[0015] Specifically, this embodiment provides an implementation method for determining whether the height valve is open on the air supply side or the air exhaust side based on the first instantaneous wind pressure characteristic value.

[0016] According to one embodiment of the present invention, determining whether the height valve is open on the air supply side or the air exhaust side specifically includes: Obtain the first instantaneous pressure difference characteristic value of the two air springs set in the lateral direction. The first instantaneous pressure difference characteristic value identifies the wind pressure difference value in the two air springs set in a pair. When the first instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold of the differential pressure valve, the differential pressure valve switches to the open state, connects to the two auxiliary air chambers adjacent to the differential pressure valve, and connects to the two air springs corresponding to the two adjacent auxiliary air chambers. Based on the differential pressure valve remaining open, the differential pressure valve switches to the closed state until the first instantaneous differential pressure characteristic value is less than the first opening pressure threshold.

[0017] Specifically, this embodiment provides an implementation method for adjusting the air pressure inside an air spring using a differential pressure valve.

[0018] According to one embodiment of the present invention, determining whether the height valve is open on the air supply side or the air exhaust side specifically includes: Obtain the second instantaneous wind pressure characteristic value of the air spring, the second instantaneous wind pressure characteristic value being the characteristic of the air spring after adjusting the internal wind pressure through the height valve; When the second instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold of the safety valve, the safety valve switches to the open state, the auxiliary air chamber is connected to the external environment through the safety valve, and the air spring corresponding to the auxiliary air chamber exhausts air to the external environment through the safety valve. Based on the continuous open state of the safety valve, the safety valve will switch to the closed state until the second instantaneous wind pressure characteristic value is less than the second opening pressure threshold.

[0019] Specifically, this embodiment provides an implementation method for adjusting the air pressure inside the air spring of a safety valve.

[0020] According to one embodiment of the present invention, determining whether the height valve is open on the air supply side or the air exhaust side specifically includes: Obtain the third instantaneous wind pressure characteristic value and the second instantaneous pressure difference characteristic value of the air spring, wherein the third instantaneous wind pressure characteristic value is the wind pressure difference value in another air spring correspondingly set in the lateral direction; The first opening pressure threshold of the differential pressure valve and the second opening pressure threshold of the safety valve are obtained, and the differential pressure valve and the safety valve are respectively connected to the auxiliary air chamber; The air pressure inside the air spring is adjusted based on the third instantaneous wind pressure characteristic value, the second instantaneous pressure difference characteristic value, the first opening pressure threshold, and the second opening pressure threshold.

[0021] Specifically, this embodiment provides an implementation method for regulating the internal air pressure of an air spring using a differential pressure valve and a safety valve.

[0022] According to one embodiment of the present invention, adjusting the air pressure within the air spring based on the third instantaneous wind pressure characteristic value, the second instantaneous pressure difference characteristic value, the first opening pressure threshold, and the second opening pressure threshold specifically includes: Based on the fact that the first opening pressure threshold is less than the second opening pressure threshold, when the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, and the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, the differential pressure valve switches to the open state, connects to the two auxiliary air chambers adjacent to the differential pressure valve, and connects to the two air springs corresponding to the two adjacent auxiliary air chambers. Based on the differential pressure valve remaining open, the differential pressure valve switches to the closed state until the second instantaneous differential pressure characteristic value is less than the first opening pressure threshold. When the differential pressure valve remains open and the third instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold, the safety valve switches to the open state, and the air spring exhausts air to the external environment through the safety valve. Based on the fact that the first opening pressure threshold is greater than the second opening pressure threshold, when the third instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold, the safety valve switches to the open state, and the air spring exhausts air to the external environment through the safety valve. Based on the continuous open state of the safety valve, the safety valve switches to the closed state until the third instantaneous wind pressure characteristic value is less than the second opening pressure threshold. When the safety valve remains open and the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, the differential pressure valve switches to the open state, connecting to the two auxiliary air chambers adjacent to the differential pressure valve and to the two air springs corresponding to the two adjacent auxiliary air chambers.

[0023] Specifically, this embodiment provides another implementation method for regulating the air pressure inside the air spring using a differential pressure valve and a safety valve.

[0024] According to one embodiment of the present invention, the step of generating adjustment decisions based on the spatial attitude features specifically includes: Based on the spatial attitude characteristics, the first center of gravity characteristics and the second center of gravity characteristics of the suspended rail vehicle are obtained. The first center of gravity characteristic is the instantaneous center of gravity of the vehicle body and the second center of gravity characteristic is the instantaneous center of gravity of the suspension beam. Obtain the offset features of the first centroid feature and the second centroid feature in the vertical direction; Based on the fact that the offset feature is within the set attitude range, the suspended rail vehicle is in a balanced position; Based on the fact that the offset feature is outside the set attitude range, the adjustment decision is generated. The adjustment decision adjusts the air pressure in the air spring to adjust the vertical overlap of the first center of gravity feature and the second center of gravity feature.

[0025] Specifically, this embodiment provides an implementation method for generating adjustment decisions based on the aforementioned spatial attitude features.

[0026] According to a third aspect of the present invention, a suspended rail vehicle includes the suspension system of the suspended rail vehicle described above. Alternatively, when controlling a suspended rail vehicle, the aforementioned control method for the suspension system of a suspended rail vehicle may be used.

[0027] The above-mentioned one or more technical solutions of the present invention have at least one of the following technical effects: The suspension system, method and suspension rail vehicle provided by the present invention, by setting the cavity of the suspension beam as an additional air chamber of the air spring, ensures the adjustment requirements of the air pressure in the air spring, while reducing the weight of the whole vehicle. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is one of the schematic diagrams showing the arrangement of differential pressure valves in the suspension system of the suspended rail vehicle provided by the present invention.

[0030] Figure 2 This is the second schematic diagram showing the arrangement of differential pressure valves in the suspension system of the suspended rail vehicle provided by the present invention.

[0031] Figure 3 This is one of the schematic diagrams showing the arrangement of safety valves in the suspension system of the suspended rail vehicle provided by the present invention.

[0032] Figure 4 This is the second schematic diagram showing the arrangement of safety valves in the suspension system of the suspended rail vehicle provided by the present invention.

[0033] Figure 5 This is one of the schematic diagrams showing the arrangement of differential pressure valves and safety valves in the suspension system of the suspended rail vehicle provided by the present invention.

[0034] Figure 6 This is the second schematic diagram showing the arrangement of the differential pressure valve and the safety valve in the suspension system of the suspended rail vehicle provided by this invention.

[0035] Figure 7 This is a flowchart illustrating the control method for the suspension system of a suspended rail vehicle provided by the present invention.

[0036] Figure label: 10. Air spring; 20. Suspension beam; 21. Additional air chamber; 31. Differential pressure valve; 32. Safety valve; 33. Height valve; 34. Adjusting rod. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] The present invention will now be described in detail with reference to specific embodiments.

[0040] In some specific embodiments of the present invention, such as Figures 1 to 6 As shown, this solution provides a suspension system for a suspended rail vehicle, including: an air spring 10, which is installed on the suspension beam 20 of the suspended rail vehicle. The suspension beam 20 has multiple independent auxiliary air chambers 21 inside, and the auxiliary air chambers 21 are arranged one-to-one with the air spring 10; and a valve assembly, which is installed on the air passage connecting the air spring 10 and the auxiliary air chambers 21, and is used to adjust the communication state between the air spring 10, the auxiliary air chambers 21 and the external environment, thereby adjusting the air pressure inside the air spring 10.

[0041] In a possible embodiment, the additional air chamber 21 can serve as a short-term supplementary air source for charging the air spring 10, which can improve the efficiency of the air spring 10 and avoid placing the air compressor on the bogie to charge the air spring 10, which would lead to the bogie bearing a heavy load and pose a risk of tipping over.

[0042] In a possible embodiment, the additional air chamber 21 can serve as a chamber for exhausting air from the air spring 10 and for balancing the air pressure inside the two paired air springs 10, thereby improving the exhaust efficiency of the air spring 10.

[0043] It should be noted that the air spring 10 is charged with air through the auxiliary air chamber 21, and this can be achieved by at least connecting two adjacent auxiliary air chambers 21 to balance the internal air pressure of the paired air springs 10.

[0044] In some possible embodiments of the present invention, the valve body assembly includes: a differential pressure valve 31, which is connected to two adjacent auxiliary air chambers 21 via a pipeline, for adjusting the communication state between the two adjacent auxiliary air chambers 21 according to the air pressure of the air spring 10 and / or the air pressure difference in the auxiliary air chambers 21.

[0045] Specifically, this embodiment provides an implementation of a differential pressure valve 31. By setting a differential pressure valve 31 between two adjacent auxiliary air chambers 21, when the air pressure inside the air spring 10 is too high, the air pressure inside the air spring 10 can be adjusted through the two adjacent auxiliary air chambers 21, thereby avoiding the risk of the rail vehicle tilting too much and overturning or derailing.

[0046] In a possible embodiment, the differential pressure valve 31 is connected to two auxiliary air chambers 21 respectively. When the air pressure in the air spring 10 is greater than the first opening pressure threshold of the differential pressure valve 31, the differential pressure valve 31 switches to the open state, and the two adjacent auxiliary air chambers 21 are connected. The air pressure in the air spring 10 is balanced through the auxiliary air chambers 21, so as to avoid the problem of excessive tilting of the vehicle body, which may lead to overturning or derailment.

[0047] In a possible embodiment, the differential pressure valve 31 is connected to two auxiliary air chambers 21 respectively. When the pressure difference between the two auxiliary air chambers 21 is greater than the first opening pressure threshold of the differential pressure valve 31, the differential pressure valve 31 switches to the open state, and the two adjacent auxiliary air chambers 21 are connected. The air pressure in the air spring 10 is balanced through the auxiliary air chambers 21, so as to avoid the problem of excessive tilting of the vehicle body, which may lead to overturning or derailment.

[0048] In some possible embodiments of the present invention, the valve body assembly includes: a safety valve 32, which is configured in a one-to-one correspondence with the auxiliary air chamber 21, for adjusting the communication state between the auxiliary air chamber 21 corresponding to the safety valve 32 and the external environment according to the air pressure of the air spring 10 and / or the air pressure in the auxiliary air chamber 21.

[0049] Specifically, this embodiment provides an implementation of a safety valve 32. By setting a safety valve 32 connected to the auxiliary air chamber 21, the air pressure inside the air spring 10 can be adjusted independently. When the air spring 10 is overcharged, that is, when the air pressure inside the air spring 10 is greater than the second opening pressure threshold of the safety valve 32, the safety valve 32 switches to the open state to reduce the pressure of the air spring 10 and prevent the air spring 10 from bursting due to excessive pressure.

[0050] In some possible embodiments of the present invention, the valve body assembly includes: a differential pressure valve 31, which is connected to two adjacent auxiliary air chambers 21 via a pipeline, for adjusting the communication state between the two adjacent auxiliary air chambers 21 according to the pressure difference between the air pressure of the air spring 10 and / or the air pressure in the auxiliary air chambers 21; and a safety valve 32, which is provided one-to-one with the auxiliary air chambers 21, for adjusting the communication state between the auxiliary air chamber 21 corresponding to the safety valve 32 and the external environment according to the air pressure of the air spring 10 and / or the air pressure in the auxiliary air chambers 21.

[0051] Specifically, this embodiment provides an implementation of a differential pressure valve 31 and a safety valve 32. By simultaneously setting the differential pressure valve 31 and the safety valve 32, on the one hand, the air pressure inside the air spring 10 can be adjusted through two adjacent auxiliary air chambers 21, and on the other hand, the air pressure inside the air spring 10 can be adjusted independently, thereby meeting different adjustment needs.

[0052] It should be noted that the first opening pressure threshold of the differential pressure valve 31 and the second opening pressure threshold of the safety valve 32 can be adjusted to each other according to different regulation requirements.

[0053] In a possible embodiment, the differential pressure valve 31 is connected to two auxiliary air chambers 21 respectively. When the air pressure in the air spring 10 is greater than the first opening pressure threshold of the differential pressure valve 31, the differential pressure valve 31 switches to the open state, and the two adjacent auxiliary air chambers 21 are connected. The air pressure in the air spring 10 is balanced through the auxiliary air chambers 21, so as to avoid the problem of excessive tilting of the vehicle body, which may lead to overturning or derailment.

[0054] In a possible embodiment, the differential pressure valve 31 is connected to two auxiliary air chambers 21 respectively. When the pressure difference between the two auxiliary air chambers 21 is greater than the first opening pressure threshold of the differential pressure valve 31, the differential pressure valve 31 switches to the open state, and the two adjacent auxiliary air chambers 21 are connected. The air pressure in the air spring 10 is balanced through the auxiliary air chambers 21, so as to avoid the problem of excessive tilting of the vehicle body, which may lead to overturning or derailment.

[0055] In some possible embodiments of the present invention, the valve body assembly further includes: a height valve 33, which is connected to the air spring 10 via a pipeline, for charging or discharging air from the air spring 10.

[0056] Specifically, this embodiment provides an implementation of a height valve 33. The height valve 33 enables the charging or decharging of air into the air spring 10. Furthermore, the height valve 33 can adjust the corresponding adjustment safety range according to different operating scenarios and load-bearing requirements of the suspended rail vehicle, that is, the safety range of the set area characteristics.

[0057] In some specific embodiments of the present invention, such as Figures 1 to 7 As shown, this solution provides a control method for the suspension system of the aforementioned suspended rail vehicle, including: The spatial attitude characteristics of the suspended rail vehicle and the set area characteristics of the height valve 33 are obtained. The spatial attitude characteristics include at least the center of gravity characteristics of the suspended rail vehicle, and the set area characteristics are the safe range of height change of the suspended rail vehicle set by the height valve 33. An adjustment decision is generated based on spatial attitude characteristics and set area characteristics. The adjustment decision is used to adjust the wind pressure inside the air spring 10.

[0058] It should be noted that the valve body assembly also includes an adjusting rod 34. The adjusting rod 34 can adjust the set area characteristics of the height valve 33, i.e. the size of the safety range, according to the operating environment and load-bearing requirements of the suspended rail vehicle. At the same time, it can adjust the air pressure in the air spring 10 by adjusting the decision to keep the height of the vehicle floor within a certain range.

[0059] In a possible embodiment, an adjustment rod 34 is also provided. The adjustment rod 34 can be used to adjust the relevant parameters of the air spring 10 and the height valve 33 according to the operating environment and load-bearing requirements of the suspended rail vehicle. For example, the opening height and safety range of the air inlet and exhaust sides of the height valve 33.

[0060] In some possible embodiments of the present invention, generating adjustment decisions based on defined regional features specifically includes: When the spatial attitude characteristics are outside the safe range of the set area characteristic mark, the first instantaneous wind pressure characteristic value inside the air spring 10 is obtained. Based on the first instantaneous wind pressure characteristic value, it is determined whether the air supply side or the air exhaust side of the height valve 33 is open. When the air supply side is open, the air spring 10 is charged with air, and when the air exhaust side is open, the air spring 10 is vented.

[0061] Specifically, this embodiment provides an implementation method for determining whether the air supply side or the exhaust side of the height valve 33 is open based on a first instantaneous wind pressure characteristic value. The spatial attitude characteristics reflect the attitude of the suspended rail vehicle in space. When the pressure on one side of the air spring 10 of the suspended rail vehicle is too high or too low, it will cause the attitude of the suspended rail vehicle to deviate. At this time, by determining the first instantaneous wind pressure characteristic value in the air spring 10, it is determined whether to charge or exhaust the corresponding air spring 10 through the height valve 33 to achieve the purpose of adjusting the wind pressure in the air spring 10, thereby enabling the spatial attitude of the suspended rail vehicle to return to normal.

[0062] It should be noted that if the spatial attitude characteristics are outside the safe range indicated by the set area characteristics, it indicates that the suspended rail vehicle is tilted, that is, there is a problem of excessive or insufficient air pressure in the air spring 10, and the internal air pressure needs to be adjusted. The set area characteristics are the set blind zone of the height valve 33. It can be understood that when the spatial attitude characteristics are within the set area characteristics, it indicates that the attitude of the suspended rail vehicle is within the normal range, that is, within the safe range.

[0063] In some possible embodiments of the present invention, determining whether the height valve 33 is open on the air supply side or the air exhaust side specifically includes: The first instantaneous pressure difference characteristic value of the two air springs 10 set in the lateral direction is obtained. The first instantaneous pressure difference characteristic value identifies the wind pressure difference value in the two air springs 10 set in a pair. When the first instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold of the differential pressure valve 31, the differential pressure valve 31 switches to the open state, connects to the two adjacent auxiliary air chambers 21 of the differential pressure valve 31, and connects to the two air springs 10 corresponding to the two adjacent auxiliary air chambers 21. Based on the differential pressure valve 31 remaining open, until the first instantaneous differential pressure characteristic value is less than the first opening pressure threshold, the differential pressure valve 31 switches to the closed state.

[0064] Specifically, this embodiment provides an implementation method for adjusting the air pressure inside the air spring 10 using a differential pressure valve 31. By obtaining the first instantaneous pressure difference characteristic value inside the two paired air springs 10, the specific situation of the air pressure inside the air spring 10 can be determined by the first opening pressure threshold of the differential pressure valve 31, indicating whether the air pressure is too high or too low. Then, after the opening condition of the differential pressure valve 31 is met, the differential pressure valve 31 switches to the open state, the two auxiliary air chambers 21 are connected, and the air pressure inside the two air springs 10 is quickly balanced, so as to achieve the purpose of adjusting the air pressure inside the air spring 10.

[0065] In some possible embodiments of the present invention, determining whether the height valve 33 is open on the air supply side or the air exhaust side specifically includes: The second instantaneous wind pressure characteristic value of the air spring 10 is obtained. The second instantaneous wind pressure characteristic value is the characteristic of the air spring 10 after the internal wind pressure is adjusted by the height valve 33. When the second instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold of the safety valve 32, the safety valve 32 switches to the open state, the auxiliary air chamber 21 is connected to the external environment through the safety valve 32, and the air spring 10 corresponding to the auxiliary air chamber 21 exhausts air to the external environment through the safety valve 32. Based on the continuous open state of safety valve 32, until the second instantaneous wind pressure characteristic value is less than the second opening pressure threshold, safety valve 32 switches to the closed state.

[0066] Specifically, this embodiment provides an implementation method for adjusting the air pressure inside the air spring 10 using a safety valve 32. By obtaining the second instantaneous air pressure characteristic value of the air spring 10, the specific situation of the air pressure inside the air spring 10 can be determined through the second opening pressure threshold of the safety valve 32, indicating whether the air pressure is too high or too low. Then, after the opening condition of the safety valve 32 is met, the safety valve 32 switches to the open state, the auxiliary air chamber 21 is connected to the external environment, and the air spring 10 exhausts air to the outside through the auxiliary air chamber 21. The air pressure inside the air spring 10 is quickly balanced to achieve the purpose of adjusting the air pressure inside the air spring 10.

[0067] In some possible embodiments of the present invention, determining whether the height valve 33 is open on the air supply side or the air exhaust side specifically includes: The third instantaneous wind pressure characteristic value and the second instantaneous pressure difference characteristic value of the air spring 10 are obtained. The third instantaneous wind pressure characteristic value is the wind pressure difference value in another air spring 10 that is correspondingly set in the lateral direction. The first opening pressure threshold of differential pressure valve 31 and the second opening pressure threshold of safety valve 32 are obtained. Differential pressure valve 31 and safety valve 32 are respectively connected to auxiliary air chamber 21. The air pressure inside the air spring 10 is adjusted based on the third instantaneous wind pressure characteristic value, the second instantaneous pressure difference characteristic value, the first opening pressure threshold, and the second opening pressure threshold.

[0068] Specifically, this embodiment provides an implementation method for adjusting the air pressure inside the air spring 10 using a differential pressure valve 31 and a safety valve 32. When the valve body assembly has both a differential pressure valve 31 and a safety valve 32, the opening sequence of the safety valve 32 and the differential pressure valve 31 is determined based on the third instantaneous air pressure characteristic value inside the air spring 10 and the second instantaneous pressure difference characteristic value of the paired air springs 10, so as to achieve rapid adjustment of the air pressure inside the air spring 10 and avoid the risk of the vehicle tilting and overturning or derailing due to changes in the air pressure inside the air spring 10.

[0069] In some possible embodiments of the present invention, adjusting the air pressure within the air spring 10 based on a third instantaneous wind pressure characteristic value, a second instantaneous pressure difference characteristic value, a first opening pressure threshold, and a second opening pressure threshold specifically includes: Based on the fact that the first opening pressure threshold is less than the second opening pressure threshold, and the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, the differential pressure valve 31 switches to the open state, connects to the two auxiliary air chambers 21 adjacent to the differential pressure valve 31, and connects to the two air springs 10 corresponding to the two adjacent auxiliary air chambers 21. Based on the differential pressure valve 31 being continuously open, until the second instantaneous differential pressure characteristic value is less than the first opening pressure threshold, the differential pressure valve 31 switches to the closed state. Based on the continuous open state of differential pressure valve 31, when the third instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold, safety valve 32 switches to the open state, and air spring 10 exhausts air to the outside environment through safety valve 32. Based on the fact that the first opening pressure threshold is greater than the second opening pressure threshold, when the third instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold, the safety valve 32 switches to the open state, and the air spring 10 exhausts air to the outside environment through the safety valve 32. Based on the continuous open state of safety valve 32, safety valve 32 switches to the closed state until the third instantaneous wind pressure characteristic value is less than the second opening pressure threshold. When the safety valve 32 remains open and the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, the differential pressure valve 31 switches to the open state, connecting with the two adjacent auxiliary air chambers 21 and the two air springs 10 corresponding to the two adjacent auxiliary air chambers 21.

[0070] Specifically, this embodiment provides another implementation method for adjusting the air pressure inside the air spring 10 using the differential pressure valve 31 and the safety valve 32. Based on the setting of the first opening pressure threshold of the differential pressure valve 31 and the second opening pressure threshold of the safety valve 32, different ways of adjusting the air pressure inside the air spring 10 are formed to meet the needs of adjusting the air pressure inside the air spring 10. The opening thresholds of the differential pressure valve 31 and the safety valve 32 can be set according to the operating scenario, environment, and load of the suspended rail vehicle to achieve the purpose of flexibly adjusting the air pressure of the air spring 10 according to the needs.

[0071] In some possible embodiments of the present invention, generating adjustment decisions based on spatial attitude features specifically includes: Based on spatial attitude characteristics, the first center of gravity and the second center of gravity characteristics of the suspended rail vehicle are obtained. The first center of gravity characteristic is the instantaneous center of gravity of the car body and the second center of gravity characteristic is the instantaneous center of gravity of the suspension beam 20. Obtain the offset features of the first and second centroid features in the vertical direction; Based on the fact that the offset characteristics are within the set attitude range, the suspended rail vehicle is in a balanced position; Based on the fact that the offset feature is outside the set attitude range, an adjustment decision is generated. The adjustment decision adjusts the wind pressure in the air spring 10 to adjust the overlap of the first center of gravity feature and the second center of gravity feature in the vertical direction.

[0072] Specifically, this embodiment provides an implementation method for generating adjustment decisions based on spatial attitude features. In addition to determining whether to trigger the adjustment of the valve body assembly based on whether the air pressure inside the air spring 10 is within a safe range, it can also be determined based on the center of gravity of the suspended rail vehicle. When the first center of gravity feature and the second center of gravity feature are not coincident, it also indicates that the overall attitude of the suspended rail vehicle is tilted, that is, outside the safe range, and adjustment is required. The adjustment method is to fill or exhaust air into the air spring 10 to make the first center of gravity feature and the second center of gravity feature coincide in the vertical direction, thereby ensuring that the spatial attitude of the suspended rail vehicle is within a safe range.

[0073] In some specific embodiments of the present invention, such as Figures 1 to 7 As shown, this solution provides a suspended rail vehicle, including the suspension system of the aforementioned suspended rail vehicle; Alternatively, when controlling a suspended rail vehicle, the aforementioned control method for the suspension system of a suspended rail vehicle may be used.

[0074] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0075] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0077] Finally, it should be noted that the above embodiments are only for illustrating the present invention and not for limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A control method for the suspension system of a suspended rail vehicle, characterized in that, The system includes: An air spring is installed on the suspension beam of the suspended rail vehicle. The suspension beam has multiple independent auxiliary air chambers, and each auxiliary air chamber corresponds to an air spring. A valve assembly is installed on the air passage connecting the air spring and the auxiliary air chambers, and is used to adjust the communication state between the air spring, the auxiliary air chambers and the external environment, thereby adjusting the air pressure inside the air spring. The method includes: The spatial attitude characteristics of the suspended rail vehicle and the setting area characteristics of the height valve are obtained. The spatial attitude characteristics include at least the center of gravity characteristics of the suspended rail vehicle, and the setting area characteristics are the safe range of height change of the suspended rail vehicle set by the height valve. An adjustment decision is generated based on the spatial attitude characteristics and the set area characteristics, and the adjustment decision is used to adjust the wind pressure in the air spring. The process of generating adjustment decisions based on the defined region features specifically includes: When the spatial attitude feature is outside the safe range of the set area feature identifier, the first instantaneous wind pressure feature value inside the air spring is obtained; Based on the first instantaneous wind pressure characteristic value, it is determined whether the air supply side or the air exhaust side of the height valve is open. When the air supply side is open, the air spring is charged with air, and when the air exhaust side is open, the air spring is vented. The determination of whether the height valve is open on the supply side or the exhaust side specifically includes: Obtain the third instantaneous wind pressure characteristic value and the second instantaneous differential pressure characteristic value of the air spring, wherein the third instantaneous wind pressure characteristic value is the wind pressure difference value in another air spring corresponding to the air spring in the lateral direction; obtain the first opening pressure threshold of the differential pressure valve and the second opening pressure threshold of the safety valve, wherein the differential pressure valve and the safety valve are respectively connected to the auxiliary air chamber; When the first opening pressure threshold is less than the second opening pressure threshold and the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, the differential pressure valve switches to the open state, connects to the two auxiliary air chambers adjacent to the differential pressure valve, and connects to the two air springs corresponding to the two adjacent auxiliary air chambers. Based on the fact that the first opening pressure threshold is greater than the second opening pressure threshold, and when the third instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold, the safety valve switches to the open state, and the air spring exhausts air to the external environment through the safety valve.

2. The control method for the suspension system of a suspended rail vehicle according to claim 1, characterized in that, The valve body assembly includes: A differential pressure valve, connected to two adjacent auxiliary air chambers via a pipeline, is used to adjust the connection state between the two adjacent auxiliary air chambers according to the air pressure of the air spring and / or the air pressure difference in the auxiliary air chambers.

3. The control method for the suspension system of a suspended rail vehicle according to claim 1, characterized in that, The valve body assembly includes: A safety valve is provided, corresponding to each of the auxiliary air chambers, to adjust the connection state between the auxiliary air chamber corresponding to the safety valve and the external environment according to the air pressure of the air spring and / or the air pressure in the auxiliary air chamber.

4. The control method for the suspension system of a suspended rail vehicle according to claim 1, characterized in that, The valve body assembly includes: A differential pressure valve is connected to two adjacent auxiliary air chambers via a pipeline and is used to adjust the connection state between the two adjacent auxiliary air chambers according to the air pressure of the air spring and / or the air pressure difference in the auxiliary air chambers. A safety valve is provided, corresponding to each of the auxiliary air chambers, to adjust the connection state between the auxiliary air chamber corresponding to the safety valve and the external environment according to the air pressure of the air spring and / or the air pressure in the auxiliary air chamber.

5. The control method for the suspension system of a suspended rail vehicle according to any one of claims 1 to 4, characterized in that, The valve body assembly also includes: A height valve is connected to the air spring via a pipeline to enable the air spring to be charged or vented.

6. The control method for the suspension system of a suspended rail vehicle according to claim 1, characterized in that, The determination of whether the height valve is open on the supply side or the exhaust side specifically includes: Obtain the first instantaneous pressure difference characteristic value of the two air springs set in the lateral direction. The first instantaneous pressure difference characteristic value identifies the wind pressure difference value in the two air springs set in a pair. When the first instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold of the differential pressure valve, the differential pressure valve switches to the open state, connects to the two auxiliary air chambers adjacent to the differential pressure valve, and connects to the two air springs corresponding to the two adjacent auxiliary air chambers. Based on the differential pressure valve remaining open, the differential pressure valve switches to the closed state until the first instantaneous differential pressure characteristic value is less than the first opening pressure threshold.

7. The control method for the suspension system of a suspended rail vehicle according to claim 1, characterized in that, The determination of whether the height valve is open on the supply side or the exhaust side specifically includes: Obtain the second instantaneous wind pressure characteristic value of the air spring, the second instantaneous wind pressure characteristic value being the characteristic of the air spring after adjusting the internal wind pressure through the height valve; When the second instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold of the safety valve, the safety valve switches to the open state, the auxiliary air chamber is connected to the external environment through the safety valve, and the air spring corresponding to the auxiliary air chamber exhausts air to the external environment through the safety valve. Based on the continuous open state of the safety valve, the safety valve will switch to the closed state until the second instantaneous wind pressure characteristic value is less than the second opening pressure threshold.

8. The control method for the suspension system of a suspended rail vehicle according to claim 1, characterized in that, Adjusting the air pressure within the air spring based on the third instantaneous wind pressure characteristic value, the second instantaneous pressure difference characteristic value, the first opening pressure threshold, and the second opening pressure threshold specifically includes: When the first opening pressure threshold is less than the second opening pressure threshold and the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, the differential pressure valve switches to the open state. Based on the differential pressure valve remaining open, the differential pressure valve switches to the closed state until the second instantaneous differential pressure characteristic value is less than the first opening pressure threshold. When the differential pressure valve remains open and the third instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold, the safety valve switches to the open state, and the air spring exhausts air to the external environment through the safety valve. Based on the fact that the first opening pressure threshold is greater than the second opening pressure threshold, and when the third instantaneous wind pressure characteristic value is greater than or equal to the second opening pressure threshold, the safety valve switches to the open state; Based on the continuous open state of the safety valve, the safety valve switches to the closed state until the third instantaneous wind pressure characteristic value is less than the second opening pressure threshold. When the safety valve remains open and the second instantaneous differential pressure characteristic value is greater than or equal to the first opening pressure threshold, the differential pressure valve switches to the open state, connecting to the two auxiliary air chambers adjacent to the differential pressure valve and to the two air springs corresponding to the two adjacent auxiliary air chambers.

9. The control method for the suspension system of a suspended rail vehicle according to any one of claims 6 to 8, characterized in that, The generation of adjustment decisions based on the spatial attitude features specifically includes: Based on the spatial attitude characteristics, the first center of gravity characteristics and the second center of gravity characteristics of the suspended rail vehicle are obtained. The first center of gravity characteristic is the instantaneous center of gravity of the vehicle body and the second center of gravity characteristic is the instantaneous center of gravity of the suspension beam. Obtain the offset features of the first centroid feature and the second centroid feature in the vertical direction; Based on the fact that the offset feature is within the set attitude range, the suspended rail vehicle is in a balanced position; Based on the fact that the offset feature is outside the set attitude range, the adjustment decision is generated. The adjustment decision adjusts the air pressure in the air spring to adjust the vertical overlap of the first center of gravity feature and the second center of gravity feature.

10. A suspended rail vehicle, characterized in that, This includes the use of a control method for the suspension system of a suspended rail vehicle as described in any one of claims 1 to 9 when performing control of the suspended rail vehicle.

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