Simulated rail transit real vehicle hose installation and fatigue verification device

Abstract

The utility model discloses a simulation rail transit real vehicle hose installation and fatigue verification device, which comprises a power distribution control cabinet and a test sample installation rack device, the test sample installation rack device comprises a vertical rack and a horizontal rack, the vertical rack is vertically installed on the horizontal rack and can move back and forth, and the horizontal rack is installed on the vertical rack and can move back and forth. The vertical rack is provided with an up-and-down movable bedplate, the up-and-down movable bedplate is provided with a movable end capable of moving left and right, the front end of the horizontal rack is provided with a base point fixing end, the movable end and the base point fixing end are respectively used for fixing an experiment sample piece, and the experiment sample piece is connected with an air source in a power distribution control cabinet through a compressed air pipeline. Through verification, the device can optimize the length of a flexible pipe assembly with reasonable flexible pipe layout of a real rail transit vehicle, and simulates the situation that the use function of the flexible pipe assembly is influenced by flexible pipe fatigue damage caused by relative reciprocating displacement of two ends of the flexible pipe in real vehicle operation.

Description

Technical Field

[0001] This utility model relates to a device for simulating the installation and fatigue verification of hoses on a real rail transit vehicle, belonging to the field of hose testing technology. Background Technology

[0002] With the development of China's railways, intelligent and comfortable high-speed trains are constantly being upgraded and new types of trains are being developed. The internal structure layout is constantly changing, and the space available for pipeline layout is becoming smaller and smaller. At the same time, when installing hoses in rail transit vehicles, one end is usually installed first, and the other end is installed after the other components are installed. If it is found at this time that the hose length or joint angle is not suitable, the adjustment is very passive in terms of time and affects the delivery of the whole vehicle. In order to provide suitable hose component lengths during the design stage of high-speed train vehicles and ensure the service life requirements, a test device is needed to simulate the installation state and verify the fatigue damage of hoses under train operation. Utility Model Content

[0003] The purpose of this invention is to provide a device for simulating the installation and fatigue verification of hoses in actual rail transit vehicles. Through verification, the overall length of the hoses can be optimized to optimize the layout of the hoses in actual rail transit vehicles. The device simulates the fatigue damage caused by the relative reciprocating displacement of the two ends of the hoses during actual vehicle operation, which affects the functionality of the hose assembly.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a device for simulating the installation and fatigue verification of flexible hoses in a real rail transit vehicle, comprising a power distribution control cabinet and a test sample mounting platform. The test sample mounting platform includes a vertical frame and a horizontal frame. The vertical frame is vertically mounted on the horizontal frame and can move back and forth. The vertical frame is equipped with upper and lower movable platforms, and movable ends are mounted on the upper and lower movable platforms and can move left and right. A base point fixing end is mounted on the front end of the horizontal frame. The movable end and the base point fixing end are used to fix the test sample, and the test sample is connected to the air source in the power distribution control cabinet through a compressed air pipeline.

[0005] As a further preferred embodiment of this solution, the power distribution control cabinet is equipped with a display screen, power indicator lights, a run button, and an emergency stop button.

[0006] As a further preferred embodiment of this solution, the side outlet of the power distribution control cabinet is equipped with a gas source pressure gauge, a sample tube pressure gauge, and a manual pressure regulating valve.

[0007] As a further preferred embodiment of this solution, the movable end is equipped with a movable end universal connector, and the base point fixed end is equipped with a base point fixed end universal connector.

[0008] As a further preferred embodiment of this solution, a vertical adjustment motor is installed at the upper end of the vertical frame. The output end of the vertical adjustment motor is connected to the upper and lower movable platforms through a screw mechanism. At the same time, both ends of the upper and lower movable platforms are installed on the guide rails of the vertical frame. The upper and lower movable platforms are moved up and down by the drive of the vertical adjustment motor.

[0009] As a further preferred embodiment of this solution, a vertical scale is provided on the side end of the vertical frame.

[0010] As a further preferred embodiment of this solution, a left-right adjustment motor is installed on the side end of the upper and lower movable platform. The output end of the left-right adjustment motor is connected to the movable end through a screw mechanism. At the same time, the movable end is installed on the guide rail of the upper and lower movable platform. The left-right adjustment motor drives the movable end to move left and right on the upper and lower movable platform.

[0011] As a further preferred embodiment of this solution, the bottom of the vertical frame is mounted on the guide rail of the horizontal frame, and a front-to-back adjustment motor is installed on the side of the horizontal frame. The output end of the front-to-back adjustment motor is connected to the vertical frame through a screw mechanism, and the vertical frame is driven to move back and forth on the horizontal frame by the front-to-back adjustment motor.

[0012] As a further preferred embodiment of this solution, the horizontal frame is provided with a horizontal longitudinal scale on its side and a horizontal transverse scale at its front end.

[0013] As a further preferred embodiment of this solution, the base point fixing end is detachably fixed to the front crossbeam of the horizontal frame by bolts and screw holes, and the crossbeam is provided with multiple threaded holes for installing the base point fixing end.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1) This device enables the installation of hose assemblies with a reasonable hose layout on actual rail transit vehicles, reducing the number of trial installations, saving development time for new models, and improving progress. It avoids risks such as excessively long hose assemblies causing rubbing against accessories during vehicle operation, and excessively short hose assemblies suffering tensile damage due to improper design.

[0016] 2) Fatigue testing can simulate the activity of hose assemblies during vehicle operation, test the time of fatigue damage, and thus obtain the service life of hose assemblies. This provides data support for quality assurance throughout the vehicle's entire life cycle and prevents vehicle accidents caused by hose assembly damage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] The markings in the diagram are as follows: 1-Power distribution control cabinet, 2-Vertical frame, 3-Horizontal frame, 4-Up-down adjustment motor, 5-Left-right adjustment motor, 6-Front-back adjustment motor, 7-Compressed air pipeline, 8-Up-down movable platform, 9-Moving end, 10-Fixed base point end, 11-Horizontal scale, 12-Horizontal scale, 13-Horizontal scale, 14-Vertical scale 1, 15-Gas source pressure gauge, 16-Sample tube pressure gauge, 17-Moving end universal connector, 18-Fixed base point end universal connector. Detailed Implementation

[0019] 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.

[0020] like Figure 1 As shown, a device for simulating the installation and fatigue verification of flexible hoses in a real rail transit vehicle mainly consists of the following components:

[0021] Power Distribution Control Cabinet: Power distribution control cabinet 1 has a display screen, power indicator light, run button, and emergency stop button. The display screen is touch-screen, and the interface functions include: simulated installation, fatigue test, benchmark calibration, setting test parameters, run, and record. Test parameter settings include: original coordinates, left and right sliding position coordinates, compressed air pipeline pressure, and fatigue sliding frequency. After power is connected, the power indicator light illuminates. The benchmark coordinates are calibrated via the display screen; test parameters are set. After setting, click "Return to Main Interface" and wait for startup.

[0022] Vertical frame: The vertical frame 2 is equipped with a movable platform 8, a vertical adjustment motor 4 fixed on the frame, and a vertical scale 14. The vertical frame 2 is installed on the horizontal frame 3 and can move horizontally (Y-axis), while moving the movable platform 8 together with it.

[0023] Horizontal frame: The horizontal frame 3 is equipped with a horizontal horizontal scale 11, a horizontal vertical scale 12, a base point fixed end 10 and a front and rear adjustment motor 6. The position of the base point fixed end 10 can be manually adjusted to achieve horizontal movement (X-axis).

[0024] Adjustment motors: The up-down adjustment motor 4 is responsible for the up-down movement of the movable platform 8 (Z-axis), thereby enabling the movable end 9 to move up-down (Z-axis); the left-right adjustment motor 5 is responsible for the lateral movement of the movable end 9 (X-axis), and can perform reciprocating movement during the simulated installation function, and the movement amplitude and frequency can be set during the fatigue test; the front-back adjustment motor 6 is responsible for the longitudinal movement of the vertical frame 2 (Y-axis), thereby enabling the movable end 9 to move longitudinally (Y-axis).

[0025] Compressed air pipeline: Compressed air pipeline 7 is the air source and test sample connected to the power distribution control cabinet 1. It provides compressed air to the test sample to better simulate the working state of the hose assembly in a real rail transit vehicle.

[0026] Upper and lower movable platform: The upper and lower movable platform 8 is equipped with an adjustment motor 5, a movable end 9, and a horizontal scale 13. The movable end 9 can move laterally (X-axis) on the upper and lower movable platform 8.

[0027] Active end: Active end 9 is equipped with active end universal connector 17. Through universal connector 17, one end of the test sample can be connected. This end is the pressure sealing end inside the sample tube. When the equipment is running, it moves back and forth with the sample.

[0028] Base point fixing end: The base point fixing end 10 is mounted on the horizontal frame 3 and can be manually adjusted in position and moved laterally (X-axis). The base point fixing end 10 is also equipped with a base point fixing end universal connector 18, which connects the test specimen and the compressed air pipeline 7 to allow compressed air to enter the test specimen hose assembly.

[0029] Scales: Horizontal scale 11 provides the initial position of the fixed end 10 of the base point when the test specimen is installed; horizontal scale 12 provides the initial longitudinal position (Y-axis) of the movable end 9 when the test specimen is installed; horizontal scale 13 provides the initial lateral position (X-axis) of the movable end 9 when the test specimen is installed; vertical scale 14 provides the initial height position (Z-axis) of the movable end 9 when the test specimen is installed.

[0030] Pressure gauges: Gas source pressure gauge 15 displays the gas source pressure value and provides information on whether the gas source pressure meets the test requirements; Sample tube pressure gauge 16 displays in real time whether the pressure inside the test sample tube is correct.

[0031] Universal connectors: The movable end universal connector 17 and the base point fixed end universal connector 18 can be adjusted at any angle to facilitate better simulation of the hose assembly loading state.

[0032] Test Specimen Installation: Based on the installation design layout and pipeline routing of the actual rail transit vehicle sample, simulate the installation of the hose assembly sample. One end of the hose assembly sample is installed onto the fixed-end universal connector 18 using a suitable threaded connector, ensuring that the sample tube is connected to the compressed air pipeline 7 to form a compressed air passage, and that it has good pressure-bearing and sealing properties. The other end is installed onto the movable-end universal connector 17, and this end is sealed to ensure that the compressed air inside the hose assembly sample does not leak.

[0033] The specific experimental procedure for this device is as follows:

[0034] (1) Install the test specimen

[0035] The test specimen is connected via a connector and installed onto the movable end universal connector 17 and the base point fixed end universal connector 18. The position of the base point fixed end 10 is adjusted to a suitable position and set as the coordinate origin. The test specimen installation is then complete.

[0036] (2) Inspection of compressed air pipeline

[0037] At this point, open the compressed air switch valve 19 to allow compressed air to enter the test sample hose assembly. The pressure should not exceed 70% of the required test pressure. Close the inlet valve and visually inspect the pressure gauge for leaks in the compressed air pipeline. If the pressure gauge shows a continuous drop in pressure, it indicates a leak, and the installation needs to be adjusted to resolve the leak. If the pipeline is leak-free, the pressure display will remain stable.

[0038] (3) Verification of test coordinate base points

[0039] Power on power distribution control cabinet 1; power indicator light illuminates. Select manual mode via the display screen, verify the coordinate origin of the three coordinate system, and set the universal joint 18 at the fixed base point as the origin with coordinates (0,0,0).

[0040] (4) Simulated installation function

[0041] In the function interface, select the "Simulated Installation" function to enter the settings interface. Set the test parameters, including the coordinates of the position (original point) of the universal connector 17 at the moving end, the coordinates of the left and right movement points around the original point, and the pressure inside the pipe. After setting, click "Confirm" to display the simulated installation working interface. Press the "Run" button on the power distribution control cabinet 1 to start the test equipment. Click the original point, and the universal connector 17 at the moving end will automatically move to the original point position; click the left movement point, and the universal connector 17 at the moving end will automatically move to the left point position; click the right movement point, and the universal connector 17 at the moving end will automatically move to the right point position. Carefully observe the trajectory of the test sample on the frame as the moving end moves left and right to confirm the flexible hose's movement space, providing information on the appropriate overall hose length and avoiding multiple trial installations for verification.

[0042] (5) Fatigue test

[0043] In the function interface, select the fatigue test function to enter the settings interface. Set the test parameters, including the position coordinates of the universal connector 17, the coordinates of the original point (center), the coordinates of the left and right movement points around the original point, the cycle frequency, the pressure inside the pipe and its upper and lower limits, and the total number of operation cycles. After setting, click "Confirm" to display the fatigue test working interface. Press the "Run" button on the power distribution control cabinet 1 to start the test equipment. During the test, if the pressure inside the pipe falls below the set lower limit, it will automatically replenish the pressure. Once the pressure reaches the upper limit, it will automatically stop. If the continuous pressure replenishment time exceeds 2 minutes, the equipment will automatically determine that the hose is damaged and the test will stop. When the number of test cycles reaches the set target, the equipment will automatically stop.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of this utility model in any way, and all technical solutions obtained by equivalent substitution or other means fall within the scope of protection of this utility model. Parts not covered by this utility model are the same as or can be implemented using existing technology.

Claims

1. A device for simulating hose installation and fatigue verification on a real rail transit vehicle, characterized in that, The device includes a power distribution control cabinet and a test sample mounting platform. The test sample mounting platform includes a vertical frame and a horizontal frame. The vertical frame is vertically mounted on the horizontal frame and can move back and forth. The vertical frame is equipped with a vertically movable platform, and a movable end is mounted on the vertically movable platform that can move left and right. A base point fixing end is mounted on the front end of the horizontal frame. The movable end and the base point fixing end are used to fix the test sample. The test sample is connected to the air source in the power distribution control cabinet through a compressed air pipeline.

2. The device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1, characterized in that, The power distribution control cabinet is equipped with a display screen, power indicator lights, a run button, and an emergency stop button.

3. The device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1, characterized in that, The side outlet of the power distribution control cabinet is equipped with a gas source pressure gauge, a sample tube pressure gauge, and a manual pressure regulating valve.

4. The device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1, characterized in that, The movable end is equipped with a movable end universal connector, and the base point fixed end is equipped with a base point fixed end universal connector.

5. The device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1, characterized in that, The upper end of the vertical frame is equipped with a vertical adjustment motor. The output end of the vertical adjustment motor is connected to the upper and lower movable platforms through a screw mechanism. At the same time, the two ends of the upper and lower movable platforms are installed on the guide rails of the vertical frame. The upper and lower movable platforms are driven to move up and down by the vertical adjustment motor.

6. A device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1 or 5, characterized in that, A vertical scale is provided on the side of the vertical frame.

7. The device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1, characterized in that, The upper and lower movable platforms are equipped with left and right adjustment motors on their side ends. The output end of the left and right adjustment motors is connected to the movable end through a lead screw mechanism. The movable end is installed on the guide rail of the upper and lower movable platforms. The left and right adjustment motors drive the movable end to move left and right on the upper and lower movable platforms.

8. The device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1, characterized in that, The bottom of the vertical frame is mounted on the guide rail of the horizontal frame, and a front-to-back adjustment motor is installed on the side of the horizontal frame. The output end of the front-to-back adjustment motor is connected to the vertical frame through a screw mechanism. The front-to-back adjustment motor drives the vertical frame to move back and forth on the horizontal frame.

9. A device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1 or 8, characterized in that, The horizontal frame has a horizontal longitudinal scale on its side and a horizontal transverse scale at its front.

10. The device for simulating the installation and fatigue verification of flexible hoses on a real rail transit vehicle according to claim 1, characterized in that, The base point fixing end is detachably fixed to the front crossbeam of the horizontal frame by bolts and screw holes, and the crossbeam is provided with multiple threaded holes for installing the base point fixing end.

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