Emergency braking performance testing device for motor train unit

Abstract

The utility model relates to the technical field of motor train unit performance testing instruments, in particular to a motor train unit emergency braking performance testing device. Comprising a mounting plate, driving wheels used for detecting a bullet train bogie in real time are rotationally arranged on moving frames, each set of driving wheels correspondingly detect one wheel of the bullet train bogie, a second motor with the output end connected with the corresponding driving wheel is arranged on the rear side of each moving frame, a support is arranged on one of the moving frames in each set, and the other end of the support is connected with a second motor. Infrared temperature sensors facing corresponding wheels of the bullet train bogie are arranged on the supports, and rotating speed sensors distributed along the periphery at intervals are further arranged on the mounting plate. The motor II drives the driving wheels to simulate the emergency braking condition of the bullet train bogie, and the infrared temperature sensor and the rotating speed sensor are arranged to monitor the temperature and rotating speed changes of the wheels in the braking process in real time, so that the test condition is closer to the actual application, and the authenticity and reliability of the test result are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of high-speed train performance testing equipment, and in particular to a high-speed train emergency braking performance testing device. Background Technology

[0002] The emergency braking performance test for high-speed trains is a critical safety assessment designed to verify whether the braking performance of new brake pads meets regulatory requirements in emergency situations. This test is essential for ensuring the safe operation of high-speed trains because it directly relates to the train's ability to decelerate or stop quickly and effectively in the event of an emergency.

[0003] According to a test device for a high-speed train braking system with patent authorization announcement number CN205982449U, the device includes: a test host, comprising a housing and a power module, a CPCI computer, and a signal acquisition and processing module integrated within the housing; and a detection device, connected to the test host for detecting various detection signals of the braking system. Although this device achieves monitoring of the braking system due to its portability and structural design, it is not suitable for testing actual braking performance. This prevents the collection of key performance data generated during braking, potentially requiring additional specialized equipment for measurement and analysis when comprehensively evaluating the effectiveness of the braking system. This undoubtedly increases the overall testing cost of the device.

[0004] Therefore, in response to the above problems, it is necessary to propose an emergency braking performance testing device for high-speed trains that can more directly and accurately acquire and analyze important parameters during the braking process, thereby providing more complete and reliable test results to ensure the safety of high-speed trains in emergency situations. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a test device for emergency braking performance of high-speed trains, which can more directly and accurately acquire and analyze important parameters in the braking process, thereby providing more complete and reliable test results to ensure the safety of high-speed trains in emergency situations.

[0006] The technical solution is as follows: A test device for emergency braking performance of a high-speed train includes a mounting plate, a sliding plate, a moving frame, a drive assembly, a drive wheel, a second motor, a lifting assembly, a bracket, an infrared temperature sensor, and a speed sensor. A sliding plate is slidably mounted on each of the top two sides of the mounting plate. Two sets of moving frames are slidably mounted on each sliding plate, and a drive assembly is also mounted on the sliding plate to drive the moving frames to slide. Each moving frame has a drive wheel rotatably mounted on it for real-time detection of the high-speed train bogie. Each set of drive wheels corresponds to a wheel on the high-speed train bogie. A second motor with its output end connected to the corresponding drive wheel is mounted on the rear side of each moving frame to drive the drive wheel to rotate. A lifting assembly for raising and lowering the high-speed train bogie is also mounted in the middle of the mounting plate. Each set of moving frames has a bracket, and an infrared temperature sensor facing the corresponding wheel of the high-speed train bogie is mounted on the bracket. Speed ​​sensors are also arranged at intervals around the perimeter of the mounting plate, with the sensing elements of the speed sensors facing the corresponding wheel positions for accurate monitoring.

[0007] Optionally, the drive assembly includes a motor and a bidirectional lead screw. The motor is mounted on the sliding plates on both sides. A bidirectional lead screw passes through and is threaded between the two moving frames in each group. Each moving frame in each group corresponds to the threads on both sides of the bidirectional lead screw. The two bidirectional lead screws on the same side are connected as a whole, and the end of the bidirectional lead screw on each side is connected to the output shaft of the motor on the same side.

[0008] Optionally, the lifting assembly includes a hydraulic cylinder and a fixed frame. A hydraulic cylinder with its telescopic end facing upward is installed at the middle position of the top of the mounting plate, and a fixed frame for placing the train bogie is connected to the telescopic end of the hydraulic cylinder.

[0009] Optionally, the front and rear sides of the fixing frame are plate-shaped extending upwards to provide a stable placement platform suitable for the structure of the train bogie.

[0010] Optionally, it also includes a dual-axis motor, screws, and connecting plates. A connecting plate is provided on each of the two sliding plates, and a dual-axis motor is also installed on the mounting plate. Screws are connected to the output ends on both sides of the dual-axis motor. The screws pass through the connecting plates on the same side and the two form a threaded engagement.

[0011] Optionally, the sliding plate moves in the left-right direction, while the moving frame moves in the front-back direction.

[0012] The beneficial effects of this utility model are as follows: By flexibly adjusting the position of the sliding plate and the moving frame, this utility model can adapt to different models and sizes of EMU bogies, enhancing the versatility and adaptability of the equipment. Furthermore, by using a motor to drive the drive wheels, it simulates the emergency braking situation of the EMU bogie. At the same time, it is equipped with infrared temperature sensors and speed sensors to monitor the temperature and speed changes of the wheels in real time during the braking process. These data are crucial for evaluating friction performance, thermal stability and braking efficiency, ensuring that the test conditions are closer to actual applications, thereby improving the authenticity and reliability of the test results. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the hydraulic cylinder, fixed frame, and bracket components of this utility model.

[0015] Figure 3 This is a schematic diagram of the planar structure of the mobile frame, motor, and bidirectional lead screw of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the dual-axis motor, screw, and connecting plate of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 100, bogie of the EMU; 1, mounting plate; 2, sliding plate; 21, moving frame; 22, motor one; 23, double-acting lead screw; 3, drive wheel; 4, motor two; 6, hydraulic cylinder; 7, fixed frame; 9, bracket; 10, infrared temperature sensor; 11, speed sensor; 12, dual-axis motor; 13, screw; 14, connecting plate. Detailed Implementation

[0018] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0019] Example: A test device for emergency braking performance of high-speed trains, such as... Figures 1-4As shown, the device includes a mounting plate 1, a sliding plate 2, a moving frame 21, a drive assembly, a drive wheel 3, a motor 4, a lifting assembly, a bracket 9, an infrared temperature sensor 10, and a speed sensor 11. The mounting plate 1 serves as the basic platform for the entire testing device. A sliding plate 2 is slidably mounted on each of the left and right sides of the top of the mounting plate 1. The sliding plates 2 move left and right, adjusting the distance between the components on them and the bogie 100 to flexibly adapt to the testing position requirements of bogies 100 of different specifications. Two sets of moving frames 21 are slidably mounted on each sliding plate 2, with two moving frames 21 in each set. Furthermore, the two sets of movable frames 21 on each side are arranged in an alternating front-to-back direction, allowing the movable frames 21 to move in the front-to-back direction. A drive assembly for driving the movable frames 21 to slide is also provided on the sliding plate 2. Each movable frame 21 is rotatably equipped with a drive wheel 3 for real-time detection of the train bogie 100. Each set of drive wheels 3 corresponds to a specific wheel on the train bogie 100. A motor 2 4 with its output end connected to the corresponding drive wheel 3 is provided on the rear side of each movable frame 21 to drive the drive wheel 3 to rotate. By adjusting the position of the sliding plate 2 and the movable frame 21, the drive wheels 3 and the train bogie 100 are aligned. The positioning of the wheels is more convenient, and the drive wheel 3 then contacts the corresponding wheel, effectively simulating the emergency braking of the bogie 100 to ensure the authenticity and accuracy of subsequent performance tests. A lifting assembly for raising and lowering the bogie 100 is also provided in the middle of the mounting plate 1, responsible for raising or lowering the bogie 100 to a suitable height for performance testing. Each set of movable frames 21 has a bracket 9, and each bracket 9 is equipped with an infrared temperature sensor 10 facing the corresponding wheel of the bogie 100. The infrared temperature sensor 10 is used to monitor the wheel's position during braking. Temperature changes are assessed to evaluate friction performance and thermal stability. The mounting plate 1 is also equipped with speed sensors 11 spaced around its perimeter. The sensing elements of the speed sensors 11 are oriented towards the corresponding wheel positions for precise monitoring. The speed sensors 11 can monitor changes in wheel speed to calculate indicators such as deceleration rate and braking distance. Thus, combined with the above, the precise coordination of various components makes the performance testing of the train bogie 100 more realistic, providing more complete and reliable test results. This allows for more direct and accurate acquisition and analysis of important parameters during braking, ensuring the safety of the trainset in real emergency situations.

[0020] like Figure 3As shown, the drive assembly includes a motor 22 and a bidirectional lead screw 23. The motor 22 is installed on both sides of the sliding plate 2. The bidirectional lead screw 23 passes through and is threaded between the two moving frames 21 in each group. Each moving frame 21 in each group corresponds to the threads on both sides of the bidirectional lead screw 23. The two bidirectional lead screws 23 on the same side are connected as a whole, and the ends of the bidirectional lead screws 23 on each side are connected to the output shaft of the motor 22 on the same side. This effectively drives and adjusts the position between each group of moving frames 21, so that each group of moving frames 21 can effectively adjust its position relative to the corresponding drive wheel 3 to achieve the test operation.

[0021] like Figure 2 As shown, the lifting assembly includes a hydraulic cylinder 6 and a fixed frame 7. The hydraulic cylinder 6 with its telescopic end facing upward is fixedly installed at the middle position of the top of the mounting plate 1. The fixed frame 7 for placing the train bogie 100 is connected to the telescopic end of the hydraulic cylinder 6. The front and rear sides of the fixed frame 7 are plate-shaped extending upward to provide a stable placement platform suitable for the structure of the train bogie 100.

[0022] like Figure 3 and Figure 4 As shown, it also includes a dual-axis motor 12, a screw 13, and a connecting plate 14. A connecting plate 14 is provided on each of the two sliding plates 2. The dual-axis motor 12 is also installed on the mounting plate 1. Screws 13 are connected to the output ends on both sides of the dual-axis motor 12. The screws 13 pass through the connecting plate 14 on the same side and the two form a threaded engagement. The position of the sliding plate 2 is adjusted by the dual-axis motor 12 and the screws 13 to adapt to the different spacing of the train bogie 100.

[0023] First, the bogie 100 to be tested is placed in the fixed frame 7. After ensuring that the bogie 100 is correctly positioned, the hydraulic cylinder 6 is activated to raise the bogie 100 to an appropriate height so that the drive wheel 3 can contact the wheel on the bogie 100. Next, the dual-shaft motor 12 drives the screws 13 on both sides to rotate, thereby adjusting the position of the sliding plate 2, so that the sliding plates 2 on both sides can move left and right, ensuring that the sliding plates 2 on both sides and their components can be adjusted to a position that matches the spacing of the bogie 100. Then, the performance test begins, i.e., the bogie 100... Maintaining a stable power state, motor 22 is then started, driving the bidirectional lead screw 23 on the same side to rotate, thereby driving the moving frame 21 to move. This causes the drive wheel 3 on the frame to contact and engage with the wheel operating in the corresponding position. Motor 4 then drives the drive wheel 3 to rotate, simulating the emergency braking situation of the bogie 100. During this process, the infrared temperature sensor 10 records the temperature rise of the wheel, which is one of the important parameters for evaluating friction performance and thermal stability. At the same time, the speed sensor 11 continuously monitors the wheel speed change to calculate key indicators such as deceleration rate and braking distance. After the braking process is completed, the test host processes all the collected data, including but not limited to temperature curves, speed change trends, deceleration time, and braking distance. Based on this data, testers can determine whether the performance of the emergency braking system meets the design requirements and safety standards.

[0024] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A test device for emergency braking performance of a high-speed train, comprising a mounting plate (1), characterized in that, Also includes: The mounting plate (1) includes a sliding plate (2), a movable frame (21), a drive assembly, a drive wheel (3), a second motor (4), a lifting assembly, a bracket (9), an infrared temperature sensor (10), and a speed sensor (11). A sliding plate (2) is slidably mounted on each of the top two sides of the mounting plate (1). Two sets of movable frames (21) are slidably mounted on each sliding plate (2). A drive assembly for driving the movable frames (21) to slide is also mounted on each sliding plate (21). Drive wheels (3) for real-time detection of the bogie (100) are rotatably mounted on each movable frame (21). Each set of drive wheels (3) corresponds to a specific location on the bogie (100). Each of the moving frames (21) has a motor (4) with its output end connected to the corresponding drive wheel (3) on its rear side, which is used to drive the drive wheel (3) to rotate. A lifting assembly for raising and lowering the bogie (100) is also provided in the middle of the mounting plate (1). Each moving frame (21) has a bracket (9). An infrared temperature sensor (10) facing the wheel of the bogie (100) is provided on the bracket (9). A speed sensor (11) is also provided on the mounting plate (1) at intervals around the perimeter. The sensing element of the speed sensor (11) faces the corresponding wheel position for accurate monitoring.

2. The emergency braking performance testing device for high-speed trains according to claim 1, characterized in that, The drive assembly includes a motor (22) and a bidirectional lead screw (23). The motor (22) is mounted on the sliding plates (2) on both sides. The bidirectional lead screw (23) passes through and is threaded between the two moving frames (21) in each group. Each moving frame (21) in each group corresponds to the threads on both sides of the bidirectional lead screw (23). The two bidirectional lead screws (23) on the same side are connected as a whole, and the ends of the bidirectional lead screws (23) on each side are connected to the output shaft of the motor (22) on the same side.

3. The emergency braking performance testing device for high-speed trains according to claim 2, characterized in that, The lifting assembly includes a hydraulic cylinder (6) and a fixed frame (7). The hydraulic cylinder (6) with its telescopic end facing upward is installed at the middle position of the top of the mounting plate (1). A fixed frame (7) for placing the train bogie (100) is connected to the telescopic end of the hydraulic cylinder (6).

4. The emergency braking performance testing device for high-speed trains according to claim 3, characterized in that, The front and rear sides of the fixed frame (7) are plate-shaped extending upwards to provide a stable placement platform suitable for the structure of the train bogie (100).

5. The emergency braking performance testing device for high-speed trains according to claim 4, characterized in that, It also includes a dual-axis motor (12), a screw (13) and a connecting plate (14). A connecting plate (14) is provided on each of the sliding plates (2) on both sides. The mounting plate (1) is also equipped with a dual-axis motor (12). A screw (13) is connected to each of the output ends on both sides of the dual-axis motor (12). The screw (13) passes through the connecting plate (14) on the same side and the two form a threaded engagement.

6. The emergency braking performance testing device for high-speed trains according to claim 5, characterized in that, The sliding plate (2) moves in the left and right direction, while the moving frame (21) moves in the front and back direction.

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