Hydraulic testing device and rail vehicle

Abstract

The application discloses a hydraulic testing device and a railway vehicle, and relates to the technical field of railway vehicles. In the hydraulic testing device, a first oil port and a second oil port are arranged on a panel of a hydraulic rescue control device, a rodless cavity loop of a hydraulic cylinder comprises a first hose and a rodless cavity transverse pipeline, and two ends of the first hose are connected with the first oil port and a first three-way joint of the rodless cavity transverse pipeline respectively. A rod cavity loop of the hydraulic cylinder comprises a second hose, a plug valve pipeline assembly, a third hose and a rod cavity transverse pipeline, two ends of the second hose are connected with the second oil port and a first end of the plug valve pipeline assembly respectively, two ends of the third hose are connected with a second three-way joint of the rod cavity transverse pipeline and a second end of the plug valve pipeline assembly respectively, and a first testing joint and a second testing joint are respectively arranged at one end of the rodless cavity transverse pipeline and the rod cavity transverse pipeline extending to a side of a vehicle body. The hydraulic testing device solves the problem that the plug valve, the testing joint and pipelines thereof are difficult to arrange due to space limitation.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, and in particular to a hydraulic testing device and a rail vehicle. Background Technology

[0002] Currently, maglev narrow-body vehicles are equipped with a hydraulic system for vehicle rescue. According to the hydraulic pipeline functional diagram, a pressure test point needs to be set at the output end of each of the two oil outlets of the hydraulic rescue control device (the rod-side circuit and the rodless-side circuit of the hydraulic cylinder). A stop valve needs to be installed inside the vehicle in the rod-side circuit of the hydraulic cylinder to ensure the safety and reliability of the rescue wheels rising in non-rescue conditions. However, because the hydraulic rescue control device is installed on the equipment's mounting box, the surrounding space is limited. Furthermore, this vehicle model has both air supply and hydraulic pipelines, resulting in numerous pipelines and difficult layout. Additionally, the space and operability of the test points must be considered, making it impossible to directly set test points at the two circuit outlets.

[0003] Therefore, how to avoid difficulties in the layout of plugs, test connectors and their pipelines due to space limitations is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this application is to provide a hydraulic testing device and a rail vehicle that solves the problem of difficulties in arranging valves, test joints and their pipelines due to space limitations.

[0005] To achieve the above objectives, this application provides a hydraulic testing device for use in hydraulic rescue control devices, comprising:

[0006] The first and second oil ports are used to be installed on the panel of the hydraulic rescue control device;

[0007] The rodless chamber circuit of the hydraulic cylinder is used to connect the rodless chamber of the hydraulic cylinder. The rodless chamber circuit of the hydraulic cylinder includes a first hose and a rodless chamber transverse pipeline. The first end of the first hose is connected to the first oil port, and the second end is connected to the first tee connector on the rodless chamber transverse pipeline.

[0008] The rod chamber circuit of the hydraulic cylinder is used to connect the rod chamber of the hydraulic cylinder. The rod chamber circuit of the hydraulic cylinder includes a second hose, a plug valve assembly, a third hose, and a rod chamber transverse pipeline. The first end of the second hose is connected to the second oil port, and the second end is connected to the first end of the plug valve assembly. The first end of the third hose is connected to the second tee connector on the rod chamber transverse pipeline, and the second end is connected to the second end of the plug valve assembly.

[0009] The first test connector is installed at one end of the rodless cavity transverse pipeline extending to the side of the vehicle body, and is used to test the pressure of the rodless cavity circuit of the hydraulic cylinder.

[0010] The second test connector is installed at one end of the rod chamber transverse pipeline extending to the side of the vehicle body, and is used to test the pressure of the rod chamber circuit of the hydraulic cylinder.

[0011] In some embodiments, both the rodless cavity transverse pipeline and the rod cavity transverse pipeline are arranged transversely along the vehicle body. The hydraulic testing device also includes at least two pipe clamps arranged transversely at intervals along the vehicle body. The at least two pipe clamps are used to be installed on the mounting box for mounting the hydraulic rescue control device to fix the rodless cavity transverse pipeline and the rod cavity transverse pipeline to the mounting box.

[0012] In some embodiments, there are two pipe clamps, which are respectively located on both sides of the first tee or the second tee along the lateral direction.

[0013] In some embodiments, the rodless chamber circuit of the hydraulic cylinder further includes a rodless chamber longitudinal main pipeline, which is arranged longitudinally along the vehicle body, and the rodless chamber transverse pipeline is connected to the rodless chamber longitudinal main pipeline through a third tee connector.

[0014] The rod chamber circuit of the hydraulic cylinder also includes a longitudinal main line of the rod chamber, which is laid along the longitudinal direction of the vehicle body. The transverse line of the rod chamber is connected to the longitudinal main line of the rod chamber through a fourth tee connector.

[0015] In some embodiments, the hydraulic testing device further includes a mounting base for mounting on the panel of the hydraulic rescue control device to secure the first hose to the panel of the hydraulic rescue control device.

[0016] In some embodiments, the plug pipe assembly includes a first steel pipe and a second steel pipe. A first end of the first steel pipe extends to the outside of the vehicle floor surface to connect to a second hose. A second end of the first steel pipe extends to the inside of the vehicle floor surface to connect to a plug installed inside the vehicle body. A first end of the second steel pipe extends to the outside of the vehicle floor surface to connect to a third hose. A second end of the second steel pipe extends to the inside of the vehicle floor surface to connect to a plug.

[0017] In some embodiments, a first test mark is provided on the rodless cavity transverse tubing near the first test connector, and a second test mark is provided on the rod cavity transverse tubing near the second test connector.

[0018] In some embodiments, the outer layers of the first hose, the second hose, and the third hose are all covered with a wear-resistant steel wire braided layer.

[0019] In some embodiments, both the first test connector and the second test connector are quick-connect pressure testing connectors and are equipped with dust caps; and / or

[0020] Both the first and second oil ports are equipped with self-sealing quick couplings.

[0021] This application also provides a rail vehicle including the hydraulic testing device described above.

[0022] Compared to the background technology described above, the hydraulic testing device provided in this application embodiment is used for a hydraulic rescue control device, including a first oil port, a second oil port, a rodless chamber circuit of a hydraulic cylinder, a rod chamber circuit of a hydraulic cylinder, a first test connector, and a second test connector. The system includes a first oil port and a second oil port, both mounted on the panel of the hydraulic rescue control device. A rodless chamber circuit is used to connect to the rodless chamber of the hydraulic cylinder. This circuit includes a first hose and a rodless chamber transverse pipeline. The first end of the first hose is connected to the first oil port, and the second end is connected to a first tee connector on the rodless chamber transverse pipeline. A rod chamber circuit is used to connect to the rod chamber of the hydraulic cylinder. This circuit includes a second hose, a valve assembly, a third hose, and a rod chamber transverse pipeline. The first end of the second hose is connected to the second oil port, and the second end is connected to the first end of the valve assembly. The first end of the third hose is connected to a second tee connector on the rod chamber transverse pipeline, and the second end is connected to the second end of the valve assembly. A first test connector is installed at one end of the rodless chamber transverse pipeline extending to the side of the vehicle body. This first test connector is used to test the pressure of the rodless chamber circuit. A second test connector is installed at one end of the rod chamber transverse pipeline extending to the side of the vehicle body. This second test connector is used to test the pressure of the rod chamber circuit.

[0023] This hydraulic testing device features tee connectors on both the rodless and rod-side circuits of the hydraulic cylinder, respectively, leading out the transverse pipes of the rodless and rod-side chambers. The first and second test connectors are located at the ends of these pipes, facilitating pressure testing of the corresponding circuits. Simultaneously, the two ports on the hydraulic rescue control device panel are connected with a first and a second flexible hose, respectively. A third flexible hose is added to the valve assembly, allowing for easy pipework arrangement in confined spaces and convenient disassembly of the device and pipes during maintenance. This design solves the problem of difficult valve, test connector, and pipe arrangement due to space limitations, enabling pipework arrangement and pressure testing within limited installation space, and improving valve operability. Furthermore, it offers greater ease of installation and maintenance, and a more compact structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the piping of the hydraulic testing device in an embodiment of this application.

[0026] Figure 2 This is a front view of the piping layout of the hydraulic testing device in an embodiment of this application.

[0027] Figure 3 This is a top view of the piping layout of the hydraulic testing device in an embodiment of this application.

[0028] Figure 4 The right view shows the piping layout of the hydraulic testing device in this embodiment.

[0029] in:

[0030] 1-Hydraulic rescue control device; 2-Mounting box; 3-First hose; 4-Second hose; 5-Third hose; 6-Plug; 7-First test connector; 8-Second test connector; 9-Longitudinal main pipeline of the rod chamber; 10-Longitudinal main pipeline of the rodless chamber; 11-First tee connector; 12-Second tee connector; 13-Transverse pipeline of the rodless chamber; 14-Transverse pipeline of the rod chamber; 15-First steel pipe; 16-Second steel pipe; 17-First pipe clamp; 18-Second pipe clamp; 19-Fourth tee connector; 20-Third tee connector; 21-Fixed seat; 22-Vehicle floor surface. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" mentioned below are defined based on the accompanying drawings in the instruction manual.

[0034] Please refer to Figures 1 to 4 , Figure 1 This is a schematic diagram of the piping of the hydraulic testing device in an embodiment of this application. Figure 2 This is a front view of the piping layout of the hydraulic testing device in an embodiment of this application. Figure 3 This is a top view of the piping layout of the hydraulic testing device in an embodiment of this application. Figure 4 The right view shows the piping layout of the hydraulic testing device in this embodiment.

[0035] The hydraulic testing device provided in this application embodiment is used for hydraulic rescue control device 1, which is connected to the vehicle body via mounting box 2.

[0036] The hydraulic testing device includes a first oil port P1, a second oil port P2, a rodless chamber circuit of the hydraulic cylinder, a rod chamber circuit of the hydraulic cylinder, a first test connector 7, and a second test connector 8.

[0037] The first oil port P1 and the second oil port P2 are installed on the right side panel of the hydraulic rescue control device 1. Both the first oil port P1 and the second oil port P2 are equipped with self-sealing quick connectors. The oil ports adopt the form of quick connectors, and the pipes are laid out by utilizing the space between the device and its mounting box 2.

[0038] The rodless chamber circuit of the hydraulic cylinder is used to connect the rodless chamber of the hydraulic cylinder. The rodless chamber circuit of the hydraulic cylinder includes a first hose 3 and a rodless chamber transverse pipe 13. The rodless chamber transverse pipe 13 has one end extending to the side of the vehicle body. The first end of the first hose 3 is connected to the first oil port P1, and the second end of the first hose 3 is connected to the first tee connector 11 on the rodless chamber transverse pipe 13.

[0039] The rod chamber circuit of the hydraulic cylinder is used to connect the rod chamber of the hydraulic cylinder. The rod chamber circuit of the hydraulic cylinder includes a second hose 4, a plug valve assembly, a third hose 5, and a rod chamber transverse pipe 14. The rod chamber transverse pipe 14 has one end extending to the side of the vehicle body. The first end of the second hose 4 is connected to the second oil port P2. The second end of the second hose 4 is connected to the first end of the plug valve assembly. The first end of the third hose 5 is connected to the second tee connector 12 on the rod chamber transverse pipe 14. The second end of the third hose 5 is connected to the second end of the plug valve assembly.

[0040] The first test connector 7 is installed at one end of the rodless cavity transverse pipeline 13 extending to the side of the vehicle body. The first test connector 7 is used to test the pressure of the rodless cavity circuit of the hydraulic cylinder.

[0041] The second test connector 8 is installed at one end of the rod chamber transverse pipeline 14 extending to the side of the vehicle body. The second test connector 8 is used to test the pressure of the rod chamber circuit of the hydraulic cylinder.

[0042] The hydraulic testing device, configured in this way, has T-connectors (first T-connector 11 on the rodless chamber transverse pipe 13 and second T-connector 12 on the rod chamber transverse pipe 14) on both the rodless chamber and rod chamber circuits of the hydraulic cylinder. The rodless chamber transverse pipe 13 and rod chamber transverse pipe 14 are respectively led out to the side of the vehicle. The first test connector 7 and the second test connector 8 are respectively located at the ends of the pipes leading out from the rodless chamber transverse pipe 13 and rod chamber transverse pipe 14, thus facilitating pressure testing of the corresponding circuits. Simultaneously, the two oil ports on the panel of the hydraulic rescue control device 1 are respectively equipped with a first hose 3 and a second hose 4 for connection. A third hose 5 is added to the connection of the valve pipe assembly, which facilitates pipe arrangement in confined spaces and allows for easy disassembly of the device and pipes during maintenance. This solves the problem of difficult layout of plug 6, test connector and its pipeline due to space limitations, and realizes the pipeline layout and pressure test under the limitation of installation space, the operability of plug 6, and makes installation and maintenance more convenient and the structure more compact.

[0043] It should be emphasized that the length of the rodless cavity transverse pipe 13 and the rod cavity transverse pipe 14 extending to the side of the vehicle is not less than 300mm, and both the rodless cavity transverse pipe 13 and the rod cavity transverse pipe 14 extend out of the side of the vehicle body. At the same time, the ends of the rodless cavity transverse pipe 13 and the rod cavity transverse pipe 14 that extend out of the side of the vehicle body can be set to be tilted upwards at 15°-30°. After tilting upwards, gravity prevents impurities from staying at the pipe end. Even if a small amount enters, it will be flushed back to the oil tank by the oil flow during vibration or the next operation, so as to prevent impurities from depositing.

[0044] In addition, the upward tilt angle of the ends of the rodless cavity transverse pipe 13 and the rod cavity transverse pipe 14 extending from the side of the vehicle body is set to 15°-30°. For example, setting it to greater than or equal to 15° can ensure that solid particles (such as sand) can overcome static friction and slide down naturally by gravity. Setting it to less than or equal to 30° can avoid stress concentration in the pipe bending caused by excessive bending and difficulty in inserting and removing quick-connect couplings.

[0045] In some embodiments, the rodless cavity transverse pipeline 13 and the rod cavity transverse pipeline 14 are both arranged transversely along the vehicle body. The hydraulic testing device also includes at least two pipe clamps arranged at intervals along the transverse of the vehicle body. The at least two pipe clamps are used to be installed on the mounting box 2 where the hydraulic rescue control device 1 is installed, so as to fix the rodless cavity transverse pipeline 13 and the rod cavity transverse pipeline 14 to the mounting box 2.

[0046] In some embodiments, there are two pipe clamps, which are respectively located on both sides of the first tee connector 11 or the second tee connector 12 along the lateral direction.

[0047] In this embodiment, the two pipe clamps are a first pipe clamp 17 and a second pipe clamp 18, which are respectively located on the left and right sides of the first tee connector 11 or the second tee connector 12 along the lateral direction.

[0048] In some embodiments, the rodless chamber circuit of the hydraulic cylinder further includes a rodless chamber longitudinal main pipeline 10, which is connected to the rodless chamber of the hydraulic cylinder and is arranged longitudinally along the vehicle body. The rodless chamber transverse pipeline 13 is connected to the rodless chamber longitudinal main pipeline 10 through a third tee connector 20. The rod-side chamber circuit of the hydraulic cylinder further includes a rod-side chamber longitudinal main pipeline 9, which is connected to the rod-side chamber of the hydraulic cylinder and is arranged longitudinally along the vehicle body. The rod-side chamber transverse pipeline 14 is connected to the rod-side chamber longitudinal main pipeline 9 through a fourth tee connector 19.

[0049] In some embodiments, the hydraulic testing device further includes a mounting base 21, which is used to be mounted on the right side panel of the hydraulic rescue control device 1 to fix the first hose 3 to the right side panel of the hydraulic rescue control device 1.

[0050] In some embodiments, the plug pipe assembly includes a first steel pipe 15 and a second steel pipe 16. A plug 6 inside the vehicle is disposed between the first steel pipe 15 and the second steel pipe 16. A first end of the first steel pipe 15 is used to extend to the outside of the vehicle body floor surface 22 to connect to a second hose 4. A second end of the first steel pipe 15 is used to extend to the inside of the vehicle body floor surface 22 to connect to the plug 6 disposed inside the vehicle body. A first end of the second steel pipe 16 is used to extend to the outside of the vehicle body floor surface 22 to connect to a third hose 5. A second end of the second steel pipe 16 is used to extend to the inside of the vehicle body floor surface 22 to connect to the plug 6.

[0051] Considering the need to install a stop valve 6 inside the vehicle's hydraulic cylinder rod chamber circuit to ensure the safety and reliability of the rescue wheel raising in non-rescue mode, the stop valve 6 can be operated from inside the vehicle during rescue. Therefore, to facilitate connection, a flexible hose (i.e., a third flexible hose 5) is added to the pipeline arranged on the stop valve 6. This facilitates pipeline arrangement in confined spaces and solves the problem of not being able to install pipe clamps when using traditional steel pipe connections.

[0052] In some embodiments, the rodless cavity transverse conduit 13 is provided with a first test mark near the first test connector 7, and the rod cavity transverse conduit 14 is provided with a second test mark near the second test connector 8.

[0053] In this way, test point markers are set at the corresponding pipeline locations near the test connectors to facilitate the identification of each circuit.

[0054] In some embodiments, the outer layers of the first hose 3, the second hose 4, and the third hose 5 are all covered with a wear-resistant steel wire braided layer.

[0055] In this way, the steel wire braided layer on the outside of the hose acts as a physical barrier, which can resist external friction, scratches or impacts from sharp objects, reduce cracking and perforation of the outer layer of the hose due to wear, avoid leakage and downtime caused by premature failure, and extend service life.

[0056] In some embodiments, the first test connector 7 and the second test connector 8 are both quick-connect pressure test connectors and are equipped with dust caps.

[0057] As can be seen, the quick-connect test connector allows operators to assemble and disassemble the connector without tools within 1-2 seconds. Meanwhile, the dust cap prevents metal shavings, dust, and mud from entering the connector, preventing the check valve from jamming or the sealing ring from being scratched. Even if the connector is idle for a long time, it can maintain internal cleanliness, reducing the failure rate.

[0058] The rail vehicle provided in this application includes the hydraulic testing device described in the above specific embodiments; other parts of the rail vehicle can be referred to in related technologies, and will not be elaborated here.

[0059] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0060] The hydraulic testing device and rail vehicle provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A hydraulic testing device for use in a hydraulic rescue control device, characterized in that, include: The first and second oil ports are used to be installed on the panel of the hydraulic rescue control device; A rodless chamber circuit for connecting the rodless chamber of a hydraulic cylinder. The rodless chamber circuit includes a first hose and a transverse pipe for the rodless chamber. The first end of the first hose is connected to the first oil port, and the second end is connected to the first tee connector on the transverse pipe for the rodless chamber. A rod chamber circuit for connecting the rod chamber of a hydraulic cylinder includes a second hose, a plug valve assembly, a third hose, and a transverse rod chamber pipeline. The first end of the second hose is connected to the second oil port, and the second end is connected to the first end of the plug valve assembly. The first end of the third hose is connected to the second tee connector on the transverse rod chamber pipeline, and the second end is connected to the second end of the plug valve assembly. The first test connector is installed at one end of the rodless cavity transverse pipeline extending to the side of the vehicle body, and is used to test the pressure of the rodless cavity circuit of the hydraulic cylinder. The second test connector is installed at one end of the rod chamber transverse pipeline extending to the side of the vehicle body, and is used to test the pressure of the rod chamber circuit of the hydraulic cylinder.

2. The hydraulic testing device as described in claim 1, characterized in that, Both the rodless cavity transverse pipeline and the rod cavity transverse pipeline are laid out transversely along the vehicle body. The hydraulic testing device also includes at least two pipe clamps that are laid out transversely at intervals along the vehicle body. The at least two pipe clamps are used to be installed on the mounting box for installing the hydraulic rescue control device to fix the rodless cavity transverse pipeline and the rod cavity transverse pipeline to the mounting box.

3. The hydraulic testing device as described in claim 2, characterized in that, The number of pipe clamps is two, and the two pipe clamps are respectively located on both sides of the first tee joint or the second tee joint along the lateral direction.

4. The hydraulic testing device as described in claim 2, characterized in that, The rodless chamber circuit of the hydraulic cylinder also includes a rodless chamber longitudinal main pipeline, which is laid along the longitudinal direction of the vehicle body. The rodless chamber transverse pipeline is connected to the rodless chamber longitudinal main pipeline through a third tee connector. The hydraulic cylinder rod chamber circuit also includes a rod chamber longitudinal main pipeline, which is laid along the longitudinal direction of the vehicle body. The rod chamber transverse pipeline is connected to the rod chamber longitudinal main pipeline through a fourth tee connector.

5. The hydraulic testing device as described in any one of claims 1-4, characterized in that, The hydraulic testing device also includes a mounting base, which is used to mount on the panel of the hydraulic rescue control device to fix the first hose to the panel of the hydraulic rescue control device.

6. The hydraulic testing device as described in any one of claims 1-4, characterized in that, The plug pipe assembly includes a first steel pipe and a second steel pipe. A first end of the first steel pipe extends to the outside of the vehicle floor to connect to the second hose. A second end of the first steel pipe extends to the inside of the vehicle floor to connect to a plug installed inside the vehicle body. A first end of the second steel pipe extends to the outside of the vehicle floor to connect to the third hose. A second end of the second steel pipe extends to the inside of the vehicle floor to connect to the plug.

7. The hydraulic testing device as described in any one of claims 1-4, characterized in that, The rodless cavity transverse conduit is provided with a first test mark near the first test connector, and the rod cavity transverse conduit is provided with a second test mark near the second test connector.

8. The hydraulic testing device as described in any one of claims 1-4, characterized in that, The outer layers of the first hose, the second hose, and the third hose are all covered with a wear-resistant steel wire braided layer.

9. The hydraulic testing device according to any one of claims 1-4, characterized in that, Both the first test connector and the second test connector are quick-connect pressure testing connectors and are equipped with dust caps; and / or Both the first oil port and the second oil port are equipped with self-sealing quick couplings.

10. A rail vehicle, characterized in that, Includes the hydraulic testing device as described in any one of claims 1-9.

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