Simulated rail transit real vehicle hose installation and fatigue verification device

Abstract

The invention 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 length of the hose assembly with reasonable rail transit real vehicle hose layout can be optimized, and the situation that the use function of the hose assembly is affected by hose fatigue damage caused by relative reciprocating displacement of the two ends of the hose in real vehicle operation is simulated.

Description

Technical Field

[0001] The invention relates to a device for installing and fatigue-verifying a hose of a simulated rail transit vehicle, and belongs to the technical field of hose testing. Background Art

[0002] With the development of China's railways, intelligent and comfortable high-speed trains are constantly updated and replaced, and new trains are developed. The internal structure layout is constantly changing, and the space provided for pipeline layout is getting smaller and smaller. At the same time, when installing hoses on rail transit vehicles, one end is usually installed first, and the other end is installed after other components are installed. If it is found that the hose length or joint angle is not suitable at this time, it is very passive to adjust it in time, which affects the delivery of the whole vehicle. In order to provide a suitable hose component length in the design stage of high-speed train vehicles and ensure the service life cycle requirements, a test device is needed to simulate the installation state and verify the fatigue damage of the hose when the train is running. Summary of the invention

[0003] The purpose of the present invention is to provide a device for simulating the installation and fatigue verification of hoses in a rail transit vehicle. Through verification, the length of the hose assembly with a reasonable layout of hoses in a rail transit vehicle can be optimized, and the relative reciprocating displacement of the two ends of the hose during the operation of the simulated vehicle can cause fatigue damage to the hose, thereby affecting the use function of the hose assembly.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a device for simulating the installation and fatigue verification of hoses of a real rail transit vehicle, which includes a power distribution control cabinet and a test sample installation stand device, the test sample installation stand device includes a vertical frame and a horizontal frame, the vertical frame is vertically and can be moved forward and backward on the horizontal frame, the vertical frame is equipped with upper and lower movable tabletops, and movable ends are installed on the upper and lower movable tabletops so as to be movable left and right, and a base point fixed end is installed on the front end of the horizontal frame, the movable end and the base point fixed end are respectively used to fix the experimental sample, and the experimental sample is connected to the air source in the power distribution control cabinet through a compressed air pipeline.

[0005] As a further optimization of this solution, the power distribution control cabinet is provided with a display screen, a power indicator light, a run button, and an emergency stop button.

[0006] As a further preferred embodiment of the present invention, a gas source pressure gauge, a pressure gauge in a sample tube and a manual pressure regulating valve are provided at the side gas outlet of the power distribution control cabinet.

[0007] As a further preferred embodiment of the present invention, a movable end universal connector is mounted on the movable end, and a base point fixed end universal connector is mounted on the base point fixed end.

[0008] As a further preferred embodiment of the present invention, an up-and-down adjusting motor is installed at the upper end of the vertical frame, and the output end of the up-and-down adjusting 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, and the upper and lower movable platforms are driven by the up-and-down adjusting motor to move up and down.

[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 optimization of this scheme, left and right adjustment motors are installed on the side ends of the upper and lower movable platforms, and the output ends of the left and right adjustment motors are connected to the movable ends through a screw mechanism. At the same time, the movable ends are installed on the guide rails of the upper and lower movable platforms, and the movable ends are driven by the left and right adjustment motors to move left and right on the upper and lower movable platforms.

[0011] As a further preferred embodiment of the present invention, the bottom of the vertical frame is installed on the guide rail of the horizontal frame, and a left-right adjustment motor is installed on the side end of the horizontal frame. The output end of the front-back adjustment motor is connected to the vertical frame through a screw mechanism, and the vertical frame is driven by the front-back adjustment motor to move forward and backward on the horizontal frame.

[0012] As a further preferred embodiment of the present invention, a horizontal longitudinal scale is provided at the side end of the horizontal frame, and a horizontal transverse scale is provided at the front end of the horizontal frame.

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

[0014] The beneficial effects of the present invention are as follows:

[0015] 1) This device can realize the installation of hose assemblies with reasonable hose layout in rail transit vehicles, reduce the number of test installations on actual vehicles, save time for the development of new models, and improve progress. It can avoid the risks of unreasonable design of hose assembly length, such as excessive length causing friction with accessories during vehicle operation, and excessively short hose assembly causing stretching damage.

[0016] 2) Fatigue testing can simulate the active state of the hose assembly during vehicle operation and test the time of fatigue damage, thereby obtaining the service life of the hose assembly, providing data support for quality assurance throughout the vehicle life cycle, and preventing vehicle accidents caused by damage to the hose assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Markings in the figure are: 1-power distribution control cabinet, 2-vertical rack, 3-horizontal rack, 4-up and down adjustment motor, 5-left and right adjustment motor, 6-front and rear adjustment motor, 7-compressed air pipeline, 8-up and down movable table, 9-movable end, 10-base point fixed end, 11-horizontal transverse scale, 12-horizontal longitudinal scale, 13-horizontal transverse scale, 14-vertical scale 1, 15-gas source pressure gauge, 16-pressure gauge in sample tube, 17-movable end universal connector, 18-base point fixed end universal connector. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0021] Power distribution control cabinet: There is a display screen, power indicator light, run button, and emergency stop button on the power distribution control cabinet 1. The display screen is touch-sensitive, and the interface functions include: simulated installation, fatigue test, base point correction, setting test parameters, running, and recording. The test parameter settings include: original coordinates, left and right sliding position coordinates, compressed air pipeline pressure, and fatigue sliding frequency. After the power is turned on, the power indicator light is on, and the base point coordinates are corrected through the display screen; set the test parameters. After the settings are completed, click to return to the main interface and wait for the start-up operation.

[0022] Vertical frame: The vertical frame 2 is equipped with a movable platen 8, an upper and lower 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 realize horizontal longitudinal movement (Y-axis direction), while moving with the upper and lower movable platens 8.

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

[0024] Adjusting motor: The up and down adjusting motor 4 is responsible for the up and down movement of the upper and lower movable table 8 (Z-axis direction), thereby realizing the up and down movement function of the movable end 9 (Z-axis direction); the left and right adjusting motor 5 is responsible for the lateral movement function of the movable end 9 (set to the X-axis direction), and can make reciprocating movements when simulating the installation function. The movement amplitude and frequency can be set during the fatigue test project; the front and rear adjusting motor 6 is responsible for the longitudinal movement (Y-axis direction) of the vertical frame 2, thereby realizing the longitudinal movement function (Y-axis direction) of the movable end 9.

[0025] Compressed air pipeline: The compressed air pipeline 7 is connected to the air source of the power distribution control cabinet 1 and the test sample, providing the test sample with compressed air in the pipe to better simulate the working state of the hose assembly close to the actual rail transit vehicle.

[0026] Upper and lower movable plates: The upper and lower movable plates 8 are equipped with an adjustment motor 5, a movable end 9, and a platen horizontal horizontal scale 13. The movable end 9 can move horizontally (in the X-axis direction) on the upper and lower movable plates 8.

[0027] Active end: The active end 9 is installed with an active end universal connector 17, through which one end of the test sample can be connected. This end is the pressure sealing end in the sample tube, and the equipment moves back and forth with the sample when it is running.

[0028] Base point fixed end: The base point fixed end 10 is installed on the horizontal frame 3, and the position can be adjusted manually and can be moved horizontally (in the X-axis direction). The base point fixed end 10 is also installed with a base point fixed end universal connector 18, through which the test sample and the compressed air pipeline 7 are connected to realize compressed air entering the test sample hose assembly.

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

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

[0031] Universal connector: The movable end universal connector 17 and the base point fixed end universal connector 18 can adjust the installation angle of the sample at will, so as to better simulate the loading state of the hose assembly.

[0032] Installation of test samples: According to the installation design layout and pipeline direction of the rail transit vehicle samples, simulate the installation of the hose assembly samples. One end of the hose assembly sample is installed on the universal connector 18 at the fixed end of the base point through a suitable threaded connector. The sample tube is required to be connected to the compressed air pipeline 7 to form a compressed air passage and have good pressure-bearing sealing performance. The other end is installed on the universal connector 17 at the movable end, and this end is blocked to ensure that the compressed air inside the hose assembly sample does not leak.

[0033] The specific test process of this device is as follows:

[0034] (1) Install the test sample

[0035] The test sample is connected through a joint and installed to the universal connector 17 at the movable end and the universal connector 18 at the base point fixed end. The position of the base point fixed end 10 is adjusted to a suitable position and set as the coordinate origin. The test sample is installed.

[0036] (2) Compressed air pipeline inspection

[0037] At this time, open the compressed air switch valve 19 to allow compressed air to enter the test sample hose assembly. The pressure does not exceed 70% of the test pressure. Close the air inlet valve and visually check the pressure gauge to see if there is any leakage in the compressed air pipeline. If the pressure gauge is always in a state of pressure drop, it means there is leakage and the installation state needs to be adjusted to solve the leakage problem. When the pipeline is not leaking, the pressure display value is balanced and does not move.

[0038] (3) Test coordinate base point verification

[0039] Connect the power supply of the power distribution control cabinet 1, and the power indicator light will be on. Select the manual mode through the display function, check the three coordinates of the origin, and set the position of the universal connector 18 at the base point fixed end as the origin, with the coordinates (0,0,0).

[0040] (4)Simulation installation function

[0041] In the function interface, click on the simulated installation function, enter the setting interface, set the test parameters, including the coordinates of the position (original point position) of the movable end universal connector 17, the coordinates of the position point moving left and right around the original point, the pressure in the pipe, etc. After setting, click Confirm, and the simulated installation work interface will appear. Press the Run button on the power distribution control cabinet 1, and the test equipment starts working. Click the original point, and the universal connector 17 of the movable end of the equipment will automatically move to the original point position; click the left moving point, and the universal connector 17 of the movable end will automatically move to the left point position; click the right moving point, and the universal connector 17 of the movable end will automatically move to the right point position. Pay attention to observe the trajectory of the test sample on the rack as the movable end moves left and right, confirm the activity space of the hose, provide us with information on the length of the appropriate hose assembly, and avoid multiple test vehicle verification problems.

[0042] (5) Fatigue test

[0043] In the function interface, select and click the fatigue test function to enter the setting interface and set the test parameters, including the position coordinates of the movable end universal connector 17, the original point (middle) position coordinates, the coordinates of the position points moving left and right around the original point, the cycle frequency, the pressure inside the pipe and the upper and lower limits, the total number of operation cycles, etc. After setting, click Confirm, and the fatigue test working interface will appear. Press the Run button on the power distribution control cabinet 1, and the test equipment will start working. During the test, if the pressure inside the pipe is lower than the set lower limit, the pressure will be automatically supplemented, and the pressure will be automatically cut off when it reaches the upper limit. If the continuous pressure supplement 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 stop automatically.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the present invention in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the present invention. The parts not involved in the present invention are the same as the prior art or can be implemented by the prior art.

Claims

1. A device for simulating the installation and fatigue verification of hoses in a rail transit vehicle, characterized in that: It includes a power distribution control cabinet and a test sample mounting stand device, the test sample mounting stand device includes a vertical frame and a horizontal frame, the vertical frame is vertically and can be moved forward and backward on the horizontal frame, upper and lower movable tabletops are installed on the vertical frame, movable ends are installed on the upper and lower movable tabletops and can be moved left and right, a base point fixed end is installed on the front end of the horizontal frame, the movable end and the base point fixed end are respectively used to fix the experimental sample, and the experimental 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 hoses in a rail transit vehicle according to claim 1, characterized in that: The power distribution control cabinet is provided with a display screen, a power indicator light, a run button and an emergency stop button.

3. The device for installing and verifying the hose of a simulated rail transit vehicle according to claim 1 is characterized in that: The side air outlet end of the power distribution control cabinet is provided with an air source pressure gauge, a pressure gauge in the sample tube and a manual pressure regulating valve.

4. The device for simulating the installation and fatigue verification of hoses in a 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 installing and verifying the hose of a simulated rail transit vehicle according to claim 1 is characterized in that: An up and down adjusting motor is installed at the upper end of the vertical frame, and the output end of the up and down adjusting 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, and the upper and lower movable platforms are driven by the up and down adjusting motor to move up and down.

6. A device for simulating rail transit vehicle hose installation and fatigue verification according to claim 1 or 5, characterized in that: A vertical scale is arranged on the side end of the vertical frame.

7. The device for installing and verifying the hose of a simulated rail transit vehicle according to claim 1 is characterized in that: The side ends of the upper and lower movable platforms are installed with left and right adjustment motors, the output ends of the left and right adjustment motors are connected to the movable ends through a screw mechanism, and the movable ends are installed on the guide rails of the upper and lower movable platforms. The movable ends are driven by the left and right adjustment motors to move left and right on the upper and lower movable platforms.

8. The device for installing and verifying the hose of a simulated rail transit vehicle according to claim 1 is characterized in that: The bottom of the vertical frame is installed on the guide rail of the horizontal frame, and a left and right adjustment motor is installed on the side end of the horizontal frame. The output end of the front and back adjustment motor is connected to the vertical frame through a screw mechanism, and the vertical frame is driven by the front and back adjustment motor to move forward and backward on the horizontal frame.

9. A device for simulating rail transit vehicle hose installation and fatigue verification according to claim 1 or 8, characterized in that: The side end of the horizontal frame is provided with a horizontal longitudinal scale, and the front end of the horizontal frame is provided with a horizontal transverse scale.

10. The device for installing and verifying the hose of a simulated rail transit vehicle according to claim 1, characterized in that: The base point fixing end is detachably fixed to the front end crossbeam of the horizontal frame through bolts and screw holes, and the crossbeam is provided with a plurality of threaded holes for installing the base point fixing end.

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