Air source device, braking system and rail transit vehicle

Abstract

The utility model belongs to rail transit technical field, concretely relates to a kind of air source device, braking system and rail transit car.The air source device includes: air compressor;Air dryer, with the air compressor intercommunication;Air cylinder subassembly, with the air dryer intercommunication;First pressure switch, with the air cylinder subassembly intercommunication;Second pressure switch, with the air cylinder subassembly intercommunication;Wherein, when the pressure of the air cylinder subassembly is less than or equal to first threshold value, the first pressure switch triggers stop signal, when the pressure of the air cylinder subassembly is greater than or equal to second threshold value, the second pressure switch triggers alarm signal.The air source device, braking system and rail transit car of the utility model can guarantee the safety of rail transit car.

Description

Technical Field

[0001] This application belongs to the field of rail transit technology, specifically relating to a wind source device, a braking system, and a rail transit vehicle. Background Technology

[0002] Because air is inexhaustible and compressed air, as a medium for transmitting force, is safe and causes no pollution after leakage, it is widely used in the braking systems of rail vehicles. The air supply unit, consisting of an air compressor and compressed air processing unit, generates compressed air to meet the requirements of the equipment using it. The generated compressed air needs to be stored in air cylinders, with the appropriate cylinder volume selected based on the air volume requirements of the equipment on board. Currently, the total air cylinders on vehicles vary in size, including 100L, 60L, and 50L, with different numbers of cylinders configured depending on the equipment using it. However, in existing technology, the cylinder pressure in the air supply unit can fluctuate. When the cylinder pressure does not meet the requirements, the safety of the rail transit vehicle cannot be guaranteed. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a wind source device, a braking system, and a rail transit vehicle, which aims to at least partially solve the technical problem that the safety of the rail transit vehicle cannot be guaranteed when the pressure of the air cylinder does not meet the requirements.

[0004] The technical solution of this utility model is as follows:

[0005] A wind source device, characterized in that it comprises: an air compressor; an air dryer connected to the air compressor; an air cylinder assembly connected to the air dryer; a first pressure switch connected to the air cylinder assembly; and a second pressure switch connected to the air cylinder assembly; wherein, when the pressure of the air cylinder assembly is less than or equal to a first threshold, the first pressure switch triggers a shutdown signal, and when the pressure of the air cylinder assembly is greater than or equal to a second threshold, the second pressure switch triggers an alarm signal.

[0006] In some implementations, a first filter is provided between the air compressor and the air dryer.

[0007] In some implementations, a second filter is provided between the air dryer and the air cylinder assembly.

[0008] In some embodiments, the air cylinder assembly includes at least one air cylinder, and the first air cylinder of at least one air cylinder is in communication with the air dryer.

[0009] In some implementations, when there are multiple air cylinders, every two adjacent air cylinders are connected.

[0010] In some implementations, a one-way valve is provided between every two adjacent air cylinders.

[0011] In some implementations, the air source device further includes a safety valve in communication with the air cylinder assembly.

[0012] In some embodiments, the air source device further includes a shut-off valve in communication with the air cylinder assembly.

[0013] Based on the same inventive concept, this application also provides a braking system, including the aforementioned air source device.

[0014] Based on the same inventive concept, this application also provides a rail transit vehicle, including the aforementioned braking system. The beneficial effects of this utility model include at least the following:

[0015] Because the air dryer is connected to the air compressor, and the air cylinder assembly is also connected to the air dryer, the air compressor compresses the air and supplies it to the air dryer. The air dryer dries the air to remove moisture, reduce impurities, and improve air quality. The dried air then enters the air cylinder assembly, reducing the likelihood of malfunctions and extending its lifespan. Since both the first and second pressure switches are connected to the air cylinder assembly, when the pressure in the air cylinder assembly is less than or equal to the first threshold, it indicates that the pressure is too low. The first pressure switch triggers a stop signal to prevent the railcar from starting, ensuring its safety and preventing accidents. Conversely, when the pressure in the air cylinder assembly is greater than or equal to the second threshold, it indicates that the pressure is too high. The second pressure switch triggers an alarm signal to stop the railcar, further ensuring its safety and preventing accidents. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the air source device in this embodiment.

[0018] In the attached image:

[0019] Air compressor 1, air dryer 2, air cylinder assembly 3, air cylinder 31, first pressure switch 4, second pressure switch 5, first filter 6, first pipe 7, second pipe 8, one-way valve 9, third pipe 10, safety valve 11, fourth pipe 12, shut-off valve 13, fifth pipe 14, second filter 15, sixth pipe 16, seventh pipe 17, eighth pipe 18. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0024] This application is described below with reference to the accompanying drawings and specific embodiments:

[0025] The air source device, braking system, and rail vehicle provided in this embodiment are intended to at least partially solve the technical problem that the safety of the rail vehicle cannot be guaranteed when the pressure of the air cylinder does not meet the requirements.

[0026] Figure 1 This is a schematic diagram of the air source device in this embodiment. (In conjunction with...) Figure 1 In this embodiment, the air source device includes: an air compressor 1, an air dryer 2, an air cylinder assembly 3, a first pressure switch 4, and a second pressure switch 5. The air dryer 2 is connected to the air compressor 1. The air cylinder assembly 3 is connected to the air dryer 2. The first pressure switch 4 is connected to the air cylinder assembly 3. The second pressure switch 5 is connected to the air cylinder assembly 3. When the pressure in the air cylinder assembly 3 is less than or equal to a first threshold, the first pressure switch 4 triggers a shutdown signal; when the pressure in the air cylinder assembly 3 is greater than or equal to a second threshold, the second pressure switch 5 triggers an alarm signal. The first threshold is less than the second threshold.

[0027] In some embodiments, since the air dryer 2 is connected to the air compressor 1 and the air cylinder assembly 3 is connected to the air dryer 2, the air compressor 1 compresses the air and supplies it to the air dryer 2. The air dryer 2 dries the air to remove moisture, reduce impurities, and improve air quality. The dried air enters the air cylinder assembly 3, which reduces the probability of failure and extends its service life. Since the first pressure switch 4 and the second pressure switch 5 are connected to the air cylinder assembly 3, when the pressure of the air cylinder assembly 3 is less than or equal to the first threshold, it indicates that the pressure of the air cylinder assembly 3 is too low. The first pressure switch 4 triggers a stop signal to prevent the rail transit vehicle from starting, thus ensuring the safety of the rail transit vehicle and preventing accidents. When the pressure of the air cylinder assembly 3 is greater than or equal to the second threshold, it indicates that the pressure of the air cylinder assembly 3 is too high. The second pressure switch 5 triggers an alarm signal to stop the rail transit vehicle, further ensuring its safety and preventing accidents.

[0028] In some embodiments, the pressure of the air cylinder assembly 3 can also be detected by a pressure sensor connected to the air cylinder assembly 3, that is, the first pressure switch 4 and the second pressure switch 5 can be replaced by a pressure sensor. The pressure sensor constantly detects the pressure of the air cylinder assembly 3 and sends the detected pressure value to the controller. The controller compares the pressure value with a first threshold and a second threshold. When the pressure value is less than or equal to the first threshold, it indicates that the pressure of the air cylinder assembly 3 is too low, and the controller sends a stop signal to prevent the rail transit vehicle from starting, thus preventing the rail transit vehicle from running and ensuring the safety of the rail transit vehicle and avoiding safety accidents. When the pressure value is greater than or equal to the second threshold, it indicates that the pressure of the air cylinder assembly 3 is too high, and the controller sends an alarm signal to stop the rail transit vehicle from running, further ensuring the safety of the rail transit vehicle and avoiding safety accidents. However, compared with the first pressure switch 4 and the second pressure switch 5, the cost of using a pressure sensor and a controller is high. In order to reduce costs, this application preferably uses the first pressure switch 4 and the second pressure switch 5.

[0029] In some embodiments, to enable the first pressure switch 4 and the second pressure switch 5 to connect to the air cylinder assembly 3, the air source device further includes a sixth pipe 16, a seventh pipe 17, and an eighth pipe 18. One end of the sixth pipe 16 is connected to the air cylinder assembly 3, and the other end is connected to the seventh pipe 17 and the eighth pipe 18. The seventh pipe 17 is connected to the first pressure switch 4 so that the first pressure switch 4 can detect the pressure of the air cylinder assembly 3. The eighth pipe 18 is connected to the second pressure switch 5 so that the second pressure switch 5 can detect the pressure of the air cylinder assembly 3.

[0030] In some embodiments, in order to further reduce the impurities contained in the air and improve the air quality, a first filter 6 is provided between the air compressor 1 and the air dryer 2 to filter the air entering the air dryer 2.

[0031] In this embodiment, to facilitate the connection between the air dryer 2 and the air compressor 1, a first pipe 7 is provided between the air dryer 2 and the air compressor 1. One end of the first pipe 7 is connected to the air dryer 2, and the other end is connected to the air compressor 1, so as to deliver the air compressed by the air compressor 1 to the air dryer 2. In this embodiment, a first filter 6 is provided on the first pipe 7.

[0032] In this embodiment, for ease of arrangement, the first pipe 7 can be a flexible hose.

[0033] In some embodiments, in order to further reduce the impurities contained in the air and improve the air quality, a second filter 15 is provided between the air dryer 2 and the air cylinder assembly 3. The air entering the air cylinder assembly 3 is filtered by the second filter 15. The filtered air entering the air cylinder assembly 3 can reduce the probability of failure of the air cylinder assembly 3 and extend the service life of the air cylinder assembly 3.

[0034] In this embodiment, to facilitate the connection between the air dryer 2 and the air cylinder assembly 3, a second pipe 8 is provided between the air dryer 2 and the air cylinder assembly 3. One end of the second pipe 8 is connected to the air dryer 2, and the other end is connected to the air cylinder assembly 3, so as to deliver the air dried by the air dryer 2 to the air cylinder assembly 3. In this embodiment, a second filter 15 is provided on the second pipe 8.

[0035] In this embodiment, for ease of arrangement, the second pipe 8 can be a flexible hose.

[0036] In some embodiments, to store the dried compressed air, the air cylinder assembly 3 includes at least one air cylinder 31, with the first air cylinder of the at least one air cylinder 31 connected to the air dryer 2 so that the air dried by the air dryer 2 enters the first air cylinder. In this embodiment, the number of air cylinders 31 can be one or more.

[0037] In this embodiment, in order to store the dried compressed air, when there are multiple air cylinders 31, every two adjacent air cylinders 31 are connected, that is, multiple air cylinders 31 are connected in series so that each air cylinder 31 can store the dried compressed air.

[0038] In this embodiment, in order to ensure that each air cylinder 31 can store dried compressed air, a one-way valve 9 is provided between every two adjacent air cylinders 31 to ensure that the flow direction of the dried compressed air meets the requirements and to prevent the dried compressed air from flowing back.

[0039] In this embodiment, to enable communication between any two adjacent air cylinders 31, a third pipe 10 is provided between them. One end of the third pipe 10 is connected to one of the air cylinders in each pair of adjacent air cylinders 31, and the other end is connected to the other air cylinder in each pair of adjacent air cylinders 31, so that the dried compressed air can enter each air cylinder. In this embodiment, a one-way valve 9 is provided on the third pipe 10.

[0040] In this embodiment, for ease of arrangement, the third pipe 10 can be a flexible hose.

[0041] In some embodiments, to ensure stable pressure within the air cylinder assembly 3, the air source device further includes a safety valve 11 connected to the air cylinder assembly 3. When the pressure within the air cylinder assembly 3 is greater than or equal to a third threshold, the safety valve 11 opens to discharge excess air from the air cylinder assembly 3, thereby ensuring that the pressure of the air cylinder assembly 3 meets the requirements and guarantees safety. In this embodiment, the third threshold is less than the second threshold and greater than the first threshold.

[0042] In this embodiment, in order to achieve the connection between the safety valve 11 and the air cylinder assembly 3, a fourth pipe 12 is provided between the safety valve 11 and the air cylinder assembly 3. One end of the fourth pipe 12 is connected to the safety valve 11 and the other end is connected to the air cylinder assembly 3, so that the compressed air in the air cylinder assembly 3 can be discharged through the safety valve 11.

[0043] In this embodiment, for ease of arrangement, the fourth pipe 12 can be a flexible hose.

[0044] In some embodiments, in order to control the output of the air cylinder assembly 3, the air source device further includes a shut-off valve 13 connected to the air cylinder assembly 3, and the shut-off valve 13 controls whether the air cylinder assembly 3 outputs compressed air.

[0045] In this embodiment, in order to achieve the connection between the shut-off valve 13 and the air cylinder assembly 3, a fifth pipe 14 is provided between the shut-off valve 13 and the air cylinder assembly 3. One end of the fifth pipe 14 is connected to the shut-off valve 13 and the other end is connected to the air cylinder assembly 3, so that the compressed air in the air cylinder assembly 3 can be discharged through the shut-off valve 13.

[0046] In this embodiment, for ease of arrangement, the fifth pipe 14 can be a flexible hose.

[0047] Based on the same inventive concept, this application also proposes a braking system that uses the aforementioned air source device. The specific structure of the air source device is as described in the above embodiments. Since the air source device uses all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0048] Based on the same inventive concept, this application also proposes a rail transit vehicle that uses the aforementioned braking system. The specific structure of the braking system is as described in the above embodiments. Since the braking system uses all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0049] In some embodiments, the rail transit vehicle can be a subway inspection vehicle, a rail transit vehicle can be a rail rescue vehicle, or a subway maintenance vehicle. Other rail transit vehicles are not listed here.

[0050] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 this application.

[0051] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0052] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0053] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0054] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A wind source device, characterized in that, include: Air compressor; An air dryer is connected to the air compressor; The air cylinder assembly is connected to the air dryer; A first pressure switch is connected to the air cylinder assembly; The second pressure switch is connected to the air cylinder assembly; Specifically, when the pressure of the air cylinder assembly is less than or equal to a first threshold, the first pressure switch triggers a shutdown signal; when the pressure of the air cylinder assembly is greater than or equal to a second threshold, the second pressure switch triggers an alarm signal.

2. The air source device according to claim 1, characterized in that, A first filter is provided between the air compressor and the air dryer.

3. The air source device according to claim 1, characterized in that, A second filter is provided between the air dryer and the air cylinder assembly.

4. The air source device according to any one of claims 1-3, characterized in that, The air cylinder assembly includes at least one air cylinder, and the first air cylinder of at least one air cylinder is in communication with the air dryer.

5. The air source device according to claim 4, characterized in that, When there are multiple air cylinders, every two adjacent air cylinders are connected.

6. The air source device according to claim 5, characterized in that, A one-way valve is provided between every two adjacent air cylinders.

7. The air source device according to any one of claims 1-3, characterized in that, The air source device also includes a safety valve connected to the air cylinder assembly.

8. The air source device according to any one of claims 1-3, characterized in that, The air source device also includes a shut-off valve that communicates with the air cylinder assembly.

9. A braking system, characterized in that, Includes the air source device as described in any one of claims 1-8.

10. A rail transit vehicle, characterized in that, Includes the braking system as described in claim 9.

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