A rail pressure test platform

Abstract

This utility model relates to the field of rail technology, and in particular to a rail pressure testing platform, including a base. A bracket is riveted to the top left side of the base, and support plates are riveted to the front and rear sides of the bottom right side of the bracket. This utility model, through the cooperation of a drive motor, lead screw, movable plate, hydraulic cylinder, pressure sensor, U-shaped frame, and traveling wheels, can simulate the pressure exerted on the rail by the wheels, accurately reproducing the stress state of the rail in actual operation, thus making the test results more consistent with actual working conditions. During testing, an external controller controls the hydraulic cylinder to work. The output end of the hydraulic cylinder drives the pressure sensor and U-shaped frame to move downwards. The U-shaped frame drives the traveling wheels to move downwards, and the bottom of the traveling wheels contacts the rail. Under the action of the hydraulic cylinder, the traveling wheels generate pressure on the rail. Subsequently, under the action of the lead screw and movable plate, the traveling wheels can travel on the rail surface under load pressure, thereby reproducing the stress state of the rail in actual operation.

Description

Technical Field

[0001] This utility model relates to the field of track technology, specifically a rail pressure testing platform. Background Technology

[0002] Steel rails are the main components of railway tracks, used to guide wheels and transmit loads. After the steel rails are manufactured, they need to be tested on a test bench to test their load-bearing capacity.

[0003] A search revealed that the patent, CN210071504U, entitled "A Utility Model for a Test Bench for Measuring Rail Pressure," includes an intelligent pressure gauge, pressure fixtures, and a rail installation test bench. Research and analysis revealed that while the test results can be collected via the intelligent pressure gauge and test equipment installed on the rail, providing reliable test data, it also has the following drawbacks to some extent.

[0004] For example, the rectangular force-applying strip used has an excessively large contact area with the rail, resulting in an excessively wide pressure-bearing surface on the rail. This makes it impossible to accurately simulate the contact state and pressure distribution between the wheels and the rail when a real train is running, causing the test results to deviate from the actual working conditions. It is difficult to accurately reflect the stress and load-bearing performance of the rail in the real operating environment. In order to solve the above technical problems, we have designed a rail pressure test platform. Utility Model Content

[0005] The purpose of this utility model is to provide a rail pressure testing platform that can simulate the pressure exerted by the wheels on the rails and accurately reproduce the stress state of the rails in actual operation, thereby making the test results more consistent with the actual working conditions. This solves the problem that in the traditional test bench, the rectangular force bar used has an excessively large contact area with the rail, resulting in an excessively wide pressure surface on the rail, which makes it impossible to accurately simulate the contact state and pressure distribution between the wheels and the rails when a real train is running.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rail pressure testing platform, comprising a base, a bracket riveted to the left side of the top of the base, and support plates riveted to the front and rear sides of the bottom right side of the bracket. A drive motor is bolted to the front side of the support plate, and the output end of the drive motor passes through the front support plate and is bolted to a lead screw. A movable plate is threaded onto the surface of the lead screw, and hydraulic cylinders are bolted to both sides of the bottom of the movable plate. A pressure sensor is bolted to the output end of the hydraulic cylinder, and a U-shaped frame is bolted to the bottom of the pressure sensor. A traveling wheel is movably connected inside the U-shaped frame via bearings, and a recording mechanism is riveted to the opposite side of the U-shaped frame.

[0007] Preferably, the recording mechanism includes a fixed plate, the opposite side of which is riveted to a U-shaped frame. An electric push rod is bolted to the bottom of the fixed plate, and an adjustment frame is bolted to the output end of the electric push rod. A micro motor is bolted to the front of the adjustment frame, and the output end of the micro motor extends through the inner cavity of the adjustment frame and is bolted to a camera.

[0008] Preferably, mounting plates are riveted to both sides of the top of the base, and a sleeper is bolted to the opposite side of the mounting plate. A rail is connected to the top of the sleeper by fasteners.

[0009] Preferably, an audible and visual alarm is bolted to the right side of the top of the bracket, and a display screen is bolted to the front of the bracket.

[0010] Preferably, the bracket has internal reinforcing ribs riveted in place, and the rear end of the lead screw is movably connected to the rear support plate via a bearing.

[0011] Preferably, both sides of the front side of the movable plate are movably connected to guide rods through linear bearings, and the front and rear ends of the guide rods are riveted to the support plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the cooperation of a drive motor, lead screw, movable plate, hydraulic cylinder, pressure sensor, U-shaped frame, and traveling wheel, can simulate the pressure exerted by the wheel on the rail, accurately reproducing the stress state of the rail in actual operation, thus making the test results more consistent with actual working conditions. During testing, the external controller controls the hydraulic cylinder to work, and the output end of the hydraulic cylinder drives the pressure sensor and U-shaped frame to move downward. The U-shaped frame drives the traveling wheel to move downward, and the bottom of the traveling wheel contacts the rail. Under the action of the hydraulic cylinder, the traveling wheel generates pressure on the rail. Subsequently, under the action of the lead screw and movable plate, the traveling wheel can travel on the rail surface under load pressure, thereby reproducing the stress state of the rail in actual operation.

[0014] 2. This utility model, through the cooperation of the recording mechanism and the display screen, can record the testing process. When the rail deforms, the camera can capture and record the deformation process and play it back on the display screen, which is convenient for staff to observe the test process in slow motion. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0016] Figure 2 This is a partial three-dimensional view of the present invention;

[0017] Figure 3This is a perspective view of the walking wheel structure of this utility model;

[0018] Figure 4 This is a perspective view of the recording mechanism of this utility model.

[0019] In the diagram: 1. Base; 2. Bracket; 3. Support plate; 4. Drive motor; 5. Lead screw; 6. Movable plate; 7. Hydraulic cylinder; 8. Pressure sensor; 9. U-shaped frame; 10. Traveling wheel; 11. Recording mechanism; 12. Fixing plate; 13. Electric push rod; 14. Adjustment frame; 15. Miniature motor; 16. Camera; 17. Mounting plate; 18. Sleeper; 19. Audible and visual alarm; 20. Display screen; 21. Guide rod. Detailed Implementation

[0020] Please see Figures 1-4 A rail pressure testing platform includes a base 1. A bracket 2 is riveted to the top left side of the base 1. Support plates 3 are riveted to the front and rear sides of the bottom right side of the bracket 2. A drive motor 4 is bolted to the front side of the support plate 3. The drive motor 4 provides power for the rotation of a lead screw 5. The rotation of the lead screw 5 drives the movement of a movable plate 6, thereby enabling the traveling wheel 10 to travel on the rail, simulating train operation. The drive motor 4 is a Y100L-2 three-phase asynchronous motor. The output end of the drive motor 4 passes through the front support plate 3 and is bolted to the lead screw 5. The movable plate 6 is threaded onto the surface of the lead screw 5. Hydraulic cylinders 7 are bolted to both sides of the bottom of the movable plate 6. The hydraulic cylinders 7 provide downward pressure to the traveling wheel 10. By adjusting the extension and retraction of the output end of the hydraulic cylinder 7, the pressure of the traveling wheel 10 on the rail can be precisely controlled to meet the testing requirements under different pressure conditions. The hydraulic cylinder 7 is a HOB series heavy-duty hydraulic cylinder, which is used in industrial pressure testing. Commonly used in equipment, this device provides stable pressure output and adapts to the pressure regulation requirements of rail pressure testing. The output end of the hydraulic cylinder 7 is connected to a pressure sensor 8 via bolts. By setting the pressure sensor 8, the pressure value applied to the rail by the traveling wheel 10 can be detected in real time, and the pressure signal is converted into an electrical signal and transmitted to the external controller, facilitating real-time monitoring of the test pressure by the staff. The bottom of the pressure sensor 8 is connected to a U-shaped frame 9 via bolts. The traveling wheel 10 is mounted on the U-shaped frame 9 and is movably connected to the traveling wheel 10 via bearings, ensuring that the traveling wheel 10 can rotate flexibly and simulate the rolling state of the wheel. The traveling wheel 10 is movably connected inside the U-shaped frame 9 via bearings. By setting the traveling wheel 10, a structural design similar to that of a train wheel is adopted, and the contact area and contact state with the rail are close to the contact situation between the real wheel and the rail. This can accurately simulate the contact state and pressure distribution between the wheel and the rail when a real train is running, making the test results more consistent with the actual working conditions. Recording mechanisms 11 are riveted to opposite sides of the U-shaped frame 9.

[0021] Please see Figure 1 and Figure 4 The recording mechanism 11 includes a fixed plate 12, with its opposite side riveted to a U-shaped frame 9. An electric push rod 13 is bolted to the bottom of the fixed plate 12. The electric push rod 13 provides power for adjusting the height of the camera 16, precisely controlling the lifting distance of the adjustment frame 14 to achieve accurate height adjustment of the camera 16. The output end of the electric push rod 13 is bolted to the adjustment frame 14. A micro motor 15 is bolted to the front of the adjustment frame 14, providing power for adjusting the angle of the camera 16 and ensuring accurate camera recording. The head 16 can capture the deformation of the rail from different angles. The output end of the micro motor 15 passes through the inner cavity of the adjustment frame 14 and is connected to the camera 16 by bolts. By setting the camera 16, the deformation process of the rail under pressure can be clearly captured. Especially when the rail is deformed, the details and process of the deformation can be recorded, providing intuitive image data for test analysis. The camera 16 is an MV-CA013-21UM industrial camera, which has high definition and high frame rate characteristics and can clearly record the moment of rail deformation, adapting to the needs of capturing the deformation process in rail pressure test.

[0022] Please see Figure 1 Mounting plates 17 are riveted to both sides of the top of the base 1. A sleeper 18 is bolted to the opposite side of the mounting plate 17. By setting the sleeper 18, the sleeper structure in the actual railway track can be simulated to provide support for the rail, so that the installation state of the rail is consistent with the actual operating environment, ensuring the authenticity of the test scenario. The top of the sleeper 18 is connected to the rail by fasteners.

[0023] Please see Figure 1 A sound and light alarm 19 is bolted to the right side of the top of the bracket 2. When the rail is damaged during the test, the sound and light alarm 19 will emit sound and light signals to alert the staff in time. A display screen 20 is bolted to the front of the bracket 2. The display screen 20 can display the pressure value detected by the pressure sensor 8 and the image captured by the camera 16 in real time, which is convenient for the staff to monitor the test process in real time. After the test, the deformation process recorded by the camera 16 can be played back, which is convenient for the staff to observe and analyze in slow motion.

[0024] Please see Figure 1 The bracket 2 has internal reinforcing ribs riveted in place, and the rear end of the lead screw 5 is movably connected to the rear support plate 3 via a bearing.

[0025] Please see Figure 2Guide rods 21 are movably connected to both sides of the front side of the movable plate 6 through linear bearings. By setting the guide rods 21, the movement of the movable plate 6 can be guided, ensuring that the movable plate 6 moves in a straight line under the drive of the lead screw 5, avoiding the movable plate 6 from deviating or rotating during the movement, and can withstand the pressure, preventing the pressure of the movable plate 6 from acting on the lead screw 5 during the test. The front end and rear end of the guide rod 21 are riveted to the support plate 3.

[0026] In use, the rail is installed on top of the sleeper 18 using fasteners. When testing is required, the device is connected to an external power supply and controller, and the pressure value is set. The external controller controls the hydraulic cylinder 7, whose output drives the pressure sensor 8 and U-shaped frame 9 downwards. The U-shaped frame 9 then drives the traveling wheel 10 downwards, bringing its bottom into contact with the rail. Under the action of the hydraulic cylinder 7, the traveling wheel 10 exerts pressure on the rail. The external controller then controls the drive motor 4, whose output drives the lead screw 5 to rotate. The lead screw 5, through a threaded connection with the movable plate 6, causes the movable plate 6 to move. Subsequently, under the action of the movable plate 6, the traveling wheel 10 moves downwards. Wheel 10 can travel on the surface of the rail under load, thus replicating the stress state of the rail in actual operation. During the test, the external controller controls the electric push rod 13 to work. The output end of the electric push rod 13 drives the adjustment frame 14 to move downward. The adjustment frame 14 drives the camera 16 to move downward. When the micro motor 15 is running, the angle of the camera 16 can be adjusted so that the camera 16 is aligned with the side of the rail. The camera 16 can capture and record the deformation process. When the rail deforms, the pressure changes. At this time, the display screen 20 replays the test scene, which is convenient for staff to observe the test process in slow motion and analyze the load-bearing performance of the rail.

[0027] In summary, this rail pressure testing platform, through the cooperation of drive motor 4, lead screw 5, movable plate 6, hydraulic cylinder 7, pressure sensor 8, U-shaped frame 9, and traveling wheel 10, solves the problem that traditional test benches, in use, have excessively large contact areas between the rectangular force bar and the rail, resulting in an excessively wide pressure-bearing surface on the rail, making it impossible to accurately simulate the contact state and pressure distribution between the wheels and the rail during actual train operation.

Claims

1. A rail pressure testing platform comprising a base (1), characterised in that: A bracket (2) is riveted to the left side of the top of the base (1). Support plates (3) are riveted to the front and rear sides of the bottom right side of the bracket (2). A drive motor (4) is bolted to the front side of the support plate (3). The output end of the drive motor (4) passes through the support plate (3) and is bolted to a lead screw (5). A movable plate (6) is threaded on the surface of the lead screw (5). A hydraulic cylinder (7) is bolted to both sides of the bottom of the movable plate (6). A pressure sensor (8) is bolted to the output end of the hydraulic cylinder (7). A U-shaped frame (9) is bolted to the bottom of the pressure sensor (8). A walking wheel (10) is movably connected to the inside of the U-shaped frame (9) through a bearing. A recording mechanism (11) is riveted to the opposite side of the U-shaped frame (9).

2. A rail pressure testing platform as claimed in claim 1, wherein: The recording mechanism (11) includes a fixed plate (12), the opposite side of which is riveted to a U-shaped frame (9). The bottom of the fixed plate (12) is connected to an electric push rod (13) by bolts. The output end of the electric push rod (13) is connected to an adjustment frame (14) by bolts. The front side of the adjustment frame (14) is connected to a micro motor (15) by bolts. The output end of the micro motor (15) extends into the inner cavity of the adjustment frame (14) and is connected to a camera (16) by bolts.

3. A rail pressure testing platform as claimed in claim 1, wherein: Mounting plates (17) are riveted to both sides of the top of the base (1). A sleeper (18) is bolted to the opposite side of the mounting plate (17). A rail is connected to the top of the sleeper (18) by fasteners.

4. A rail pressure testing platform as claimed in claim 1, wherein: A sound and light alarm (19) is bolted to the right side of the top of the bracket (2), and a display screen (20) is bolted to the front side of the bracket (2).

5. A rail pressure testing platform as claimed in claim 1, wherein: The bracket (2) has reinforcing ribs riveted inside, and the rear end of the lead screw (5) is movably connected to the rear support plate (3) through a bearing.

6. A rail pressure testing platform as claimed in claim 1, wherein: The front sides of the movable plate (6) are connected to guide rods (21) through linear bearings. The front and rear ends of the guide rods (21) are riveted to the support plate (3).

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