Speed simulation device for calibrating speed test module

Abstract

The utility model discloses a speed simulation device for calibration of a speed test module, and relates to the technical field of photoelectric measurement. The rotary driving part is assembled at the top end of the mounting bracket; the rotation simulation part is assembled on an output shaft of the rotation driving part, the rotation driving part drives the rotation simulation part to rotate, and the instantaneous speed of train equipment monitored by pantograph dynamic monitoring equipment when the train equipment passes is simulated; the adjusting guide rail is assembled on the mounting bracket; and the measuring piece is assembled on the adjusting guide rail in a sliding manner and is used for measuring the number of times and interval time when the rotating simulation piece passes through in a rotating manner with different distance measuring radiuses. The rotation driving part drives the rotation simulation part to rotate, the instantaneous speed monitored by the pantograph dynamic monitoring equipment when train equipment passes is simulated, and compared with the speed change simulated by a horizontal movement mechanism, the motion range of the device is not limited, large impact cannot be generated, the target operation speed is constant, and the simulation calculation speed is more accurate.

Description

A speed simulation device for calibrating a speed test module Technical Field

[0001] This utility model relates to the field of photoelectric measurement technology, and more specifically to a speed simulation device for calibrating a speed test module. Background Technology

[0002] The pantograph dynamic monitoring equipment is installed on the tracks of high-speed railway stations, station throat areas, and train depots and locomotive depots. It employs high-speed, high-resolution, non-contact image analysis and measurement technology to achieve dynamic automatic detection of significant hidden dangers such as damage and breakage of the pantograph's sliding contact plate, as well as indoor visual observation of foreign objects on the train roof and the status of key components. The speed testing module is a crucial component of the monitoring equipment; its testing accuracy directly affects the image quality of captured images, potentially leading to missed shots. Therefore, the calibration of the speed testing module's accuracy is particularly important before the equipment leaves the factory. During calibration, a high-precision speed simulation device is required to simulate on-site operating conditions. By simulating speed changes, the applicable speed range of the speed testing module and the testing accuracy at each speed level are verified.

[0003] Currently, conventional speed simulation devices mainly use horizontal motion mechanisms to simulate speed changes. Specifically, a target is mounted on a horizontal reciprocating motion mechanism, and a motor rotates to drive the target in reciprocating motion, as shown in Figure 4. This device uses a motor to drive the motion mechanism, causing the target to reciprocate. A fixed-point identification sensor identifies the number of times the target appears within the motion range. The time interval of a single round trip by the target can be calculated from the motor speed. Furthermore, based on the stroke of the reciprocating motion mechanism, the target's running speed can be determined, simulating the instantaneous speed of the pantograph's carbon slider.

[0004] Disadvantages of existing solutions:

[0005] (1) The range of motion of the horizontal reciprocating motion mechanism is limited;

[0006] (2) High-speed operation generates a large impact on the motion mechanism;

[0007] (3) The motor is in a process of repeated acceleration-uniform speed-deceleration throughout the entire process, which causes the target running speed to be inconsistent and the simulated speed to have deviation. Summary of the Invention

[0008] To overcome the shortcomings of the existing technology, the purpose of this invention is to provide a speed simulation device for calibrating a speed testing module, thereby solving the problems existing in the prior art that uses a horizontal motion mechanism to simulate speed changes. This invention uses a rotary drive component to drive a rotary simulation component to rotate, simulating the instantaneous speed of a train passing by as monitored by the pantograph dynamic monitoring equipment. Different speeds are coupled through the change in the rotational speed of the rotary drive component and the change in the position of the measuring component.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A speed simulation device for calibrating a speed test module, comprising:

[0011] Mounting bracket;

[0012] A rotary drive component assembled at the top of the mounting bracket;

[0013] A rotating simulation component is mounted on the output shaft of the rotating drive component. The rotating drive component drives the rotating simulation component to rotate, simulating the instantaneous speed of the train equipment monitored by the pantograph dynamic monitoring equipment when it passes by.

[0014] Adjustment rails mounted on the mounting bracket;

[0015] A measuring component that is slidably mounted on the adjusting guide rail and used to measure the number of times and the interval time when the rotating simulation component rotates through different measuring radii.

[0016] Preferably, the rotating simulation component is a cross-shaped structure, and the output shaft of the rotating drive component is connected to the middle part of the cross-shaped structure.

[0017] Preferably, both the rotating simulation component and the adjusting guide rail are vertically arranged. The rotating drive component drives the rotating simulation component to rotate in a vertical plane, and the measuring component slides vertically on the adjusting guide rail to measure the number of times and the interval time when the rotating simulation component rotates through different vertical measuring radii.

[0018] Preferably, the rotary drive component is bolted to the top of the mounting bracket, and the rotary simulation component is fixed to the rotating shaft of the rotary drive component by screws.

[0019] Preferably, the adjusting guide rail is vertically mounted on the mounting bracket, and the measuring component is fastened to the slider of the adjusting guide rail with screws.

[0020] Preferably, the mounting bracket includes a mounting plate, a mounting frame, and a base; the mounting plate is horizontally mounted on the top of the mounting frame, and the bottom end of the mounting frame is mounted on the base; the rotation drive component is mounted on the mounting plate and its output axis extends outward from the mounting plate and the mounting frame to connect with the rotation simulation component.

[0021] Preferably, the mounting frame is a two-tiered isosceles trapezoidal frame structure, with the top being smaller than the bottom, and the base is a cuboid box structure.

[0022] Preferably, the adjusting guide rail is vertically mounted on the mounting frame, and the top surface of the base is provided with a cavity corresponding to the rotation position of the rotating simulation component.

[0023] Preferably, the rotary drive is a motor with adjustable speed.

[0024] Preferably, the measuring device is a ranging laser.

[0025] The beneficial effects of this utility model are:

[0026] 1. The speed simulation device provided by this utility model is composed of a mounting bracket, a rotary drive component, a rotary simulation component, an adjusting guide rail, and a measuring component. It has a simple structure. During the adjustment process, only the rotation speed of the rotary drive component or the position of the measuring component needs to be adjusted, making the operation simple. Only the mounting bracket, the rotary simulation component, and the adjusting guide rail need to be processed, and the rotary drive component and the measuring component are purchased as finished products, resulting in low cost.

[0027] 2. The speed simulation device provided by this utility model uses a rotating drive component to drive a rotating simulation component to rotate, simulating the instantaneous speed of a train passing by the pantograph dynamic monitoring equipment. Compared with the horizontal motion mechanism in the prior art that simulates speed changes, this utility model has no limitation on the range of motion, does not produce a large impact, the target running speed is constant, and the simulation calculation speed is more accurate. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the speed simulation device of this utility model;

[0029] Figure 2 is a front view of the assembly of the mounting bracket, adjusting guide rail, and measuring components of this utility model;

[0030] Figure 3 is a schematic diagram of the rotation simulation component of this utility model;

[0031] Figure 4 is a schematic diagram of the existing technology that uses a horizontal motion mechanism to simulate speed changes;

[0032] Figure label:

[0033] 1. Mounting bracket; 11. Mounting plate; 12. Mounting frame; 13. Base; 14. Cavity; 2. Rotation drive component; 3. Rotation simulation component; 4. Adjustment guide rail; 5. Measuring component. Detailed Implementation

[0034] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model.

[0035] A speed simulation device for calibrating a speed test module, as shown in Figures 1, 2, and 3, includes:

[0036] Mounting bracket 1;

[0037] Rotary drive component 2 is mounted on the top of mounting bracket 1;

[0038] The rotating simulation component 3 is mounted on the output shaft of the rotating drive component 2. The rotating drive component 2 drives the rotating simulation component 3 to rotate, simulating the instantaneous speed of the train equipment monitored by the pantograph dynamic monitoring equipment when it passes by.

[0039] Adjustment rail 4 is mounted on mounting bracket 1;

[0040] A measuring component 5 is slidably mounted on the adjusting guide rail 4 and is used to measure the number of times and the interval time when the rotating simulation component 3 rotates through different measuring radii.

[0041] In this embodiment, the mounting bracket 1 is used to mount the rotary drive component 2 and the adjusting guide rail 4; the rotary drive component 2 is used to drive the rotary simulation component 3 to rotate; the rotation of the rotary simulation component 3 is used to simulate the instantaneous speed of the train equipment monitored by the pantograph dynamic monitoring equipment when it passes by; the adjusting guide rail 4 is used to assemble the measuring component 5 and adjust the position of the measuring component 5.

[0042] Measuring component 5 is used to measure the number of times and the interval time when the rotating simulation component 3 rotates through, and compares it with the standard component to determine whether measuring component 5 meets the requirements. Measuring component 5 is a component in the speed test module. One of the main purposes of the speed simulation device is to test whether measuring component 5 meets the requirements at a certain simulated speed.

[0043] The method for determining whether the measuring component 5 meets the requirements includes: the measuring component 5 collects N rotations within a time period T; for a standard component, it collects M rotations within a time period T. The absolute value of the difference between M and N is the number of missed inspections of the measuring component. The number of missed inspections is compared with a threshold. If it is less than the threshold, the measuring component 5 meets the requirements; otherwise, it does not meet the requirements.

[0044] Given the rotational speed of the rotating drive component 2, and using the rotational speed and the rotational radius on the corresponding rotating simulation component 3, the speed at the corresponding rotational radius position on the rotating simulation component 3 can be determined; this is the simulated speed of the speed simulation device. Additionally, the position of the measuring component 5 on the adjustment guide rail 4 can be slidably adjusted to measure the simulated speed at that position corresponding to the distance measuring radius on the rotating simulation component 3.

[0045] In this embodiment, the train equipment monitored by the pantograph dynamic monitoring device may include pantograph sliding plate, foreign objects on the roof, and key components, etc.

[0046] As shown in Figures 1 and 3, the output shaft of the rotary drive 2 is connected to the middle part of the cross structure.

[0047] As shown in Figure 1, both the rotating simulation component 3 and the adjusting guide rail 4 are vertically arranged. The rotating drive component 2 drives the rotating simulation component 3 to rotate in the vertical plane, and the measuring component 5 slides vertically on the adjusting guide rail 4 to measure the number of times and the interval time when the rotating simulation component 3 rotates through different vertical measuring radii. The vertical arrangement facilitates both processing and installation, and also facilitates speed measurement.

[0048] In this embodiment, the rotary drive component 2 is assembled to the top of the mounting bracket 1 using M6 bolts, and the rotary simulation component 3 is fixed to the rotating shaft of the rotary drive component 2 using screws. The adjusting guide rail 4 is vertically assembled on the mounting bracket 1, and the measuring component 5 is fastened to the slider of the adjusting guide rail 4 using M4 screws.

[0049] As shown in Figures 1 and 2, the mounting bracket 1 includes a mounting plate 11, a mounting frame 12, and a base 13. The mounting plate 11 is horizontally mounted on the top of the mounting frame 12, and the bottom of the mounting frame 12 is mounted on the base 13. The rotary drive component 2 is mounted on the mounting plate 11, and its output axis extends outward from the mounting plate 11 and the mounting frame 12 to connect with the rotary simulation component 3. The mounting frame 12 is a two-tiered isosceles trapezoidal frame structure, with the top being smaller than the bottom, and the base 13 is a cuboid box structure.

[0050] The guide rail 4 is vertically mounted on the mounting bracket 12. The top surface of the base 13 is provided with a cavity 14 corresponding to the rotation position of the rotating simulation component 3, so that the rotating simulation component 3 can pass through the cavity 14 when it rotates and prevent interference with the rotation of the rotating simulation component 3.

[0051] In this embodiment, the rotating drive component 2 is a speed-adjustable motor that drives the rotating simulation component 3 to rotate. The measuring component 5 is a ranging laser that measures the number of times and the interval time when the rotating simulation component 3 rotates through different ranging radii.

[0052] In this embodiment, three adjustment methods can be used during the speed simulation:

[0053] Given the motor speed n and the measuring radius r of the rotating simulation component corresponding to the measuring component position, the linear velocity v at the position corresponding to the measuring radius r of the rotating simulation component, which is the simulated velocity of the velocity simulation device, can be expressed by the following formula:

[0054]

[0055] (a) Fix the position of the laser, that is, keep the ranging radius r constant, and calculate the magnitude of the simulated speed under this working condition by changing the motor speed n.

[0056] (ii) Fix the motor speed, i.e., n remains constant, adjust the vertical distance of the ranging laser up and down to change the ranging radius r, and calculate the simulated speed under this working condition based on the fixed speed and ranging radius r;

[0057] (iii) The position of the laser and the speed of the motor are both adjustable. The simulated speed under this working condition is calculated by parameter coupling based on the motor rotation speed n and the ranging radius r.

[0058] The embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalents or substitutions are all included within the scope defined by the claims of this utility model.

Claims

1. A speed simulation device for calibrating a speed test module, characterized in that, include: Mounting bracket (1); a rotating drive component (2) mounted on the top of the mounting bracket (1); a rotating simulation component (3) mounted on the output shaft of the rotating drive component (2), wherein the rotating drive component (2) drives the rotating simulation component (3) to rotate, simulating the instantaneous speed of the train equipment monitored by the pantograph dynamic monitoring device when it passes by; an adjusting guide rail (4) mounted on the mounting bracket (1); and a measuring component (5) slidably mounted on the adjusting guide rail (4) for measuring the number of times and the interval time when the rotating simulation component (3) rotates through at different distance radii.

2. The speed simulation device for calibrating a speed test module as described in claim 1, characterized in that, The rotating simulation component (3) has a cross-shaped structure, and the output shaft of the rotating drive component (2) is connected to the middle part of the cross-shaped structure.

3. The speed simulation device for calibrating a speed test module as described in claim 1, characterized in that, The rotating simulation component (3) and the adjusting guide rail (4) are both vertically set. The rotating drive component (2) drives the rotating simulation component (3) to rotate in the vertical plane. The measuring component (5) slides vertically on the adjusting guide rail (4) to measure the number of times and the interval time when the rotating simulation component (3) rotates through different vertical measuring radii.

4. The speed simulation device for calibrating a speed test module as described in claim 1, characterized in that, The rotary drive component (2) is bolted to the top of the mounting bracket (1), and the rotary simulation component (3) is fixed to the rotating shaft of the rotary drive component (2) by screws.

5. A speed simulation device for calibrating a speed test module as described in claim 1, characterized in that, The adjusting guide rail (4) is vertically mounted on the mounting bracket (1), and the measuring component (5) is fastened to the slider of the adjusting guide rail (4) with screws.

6. The speed simulation device for calibrating a speed test module as described in claim 1, characterized in that, The mounting bracket (1) includes a mounting plate (11), a mounting frame (12), and a base (13); the mounting plate (11) is horizontally mounted on the top of the mounting frame (12), and the bottom end of the mounting frame (12) is mounted on the base (13); the rotary drive (2) is mounted on the mounting plate (11) and its output axis extends outward from the mounting plate (11) and the mounting frame (12) to connect to the rotary simulation component (3).

7. A speed simulation device for calibrating a speed test module as described in claim 6, characterized in that, The mounting bracket (12) is an isosceles trapezoidal frame structure with the top smaller than the bottom, and the base (13) is a cuboid box structure.

8. A speed simulation device for calibrating a speed test module as described in claim 7, characterized in that, The adjustment guide rail (4) is vertically mounted on the mounting bracket (12), and the top surface of the base (13) is provided with a cavity (14) corresponding to the rotation position of the rotating simulation component (3).

9. A speed simulation device for calibrating a speed test module as described in claim 1, characterized in that, The rotary drive component (2) is a motor with adjustable speed.

10. A speed simulation device for calibrating a speed test module as described in claim 1, characterized in that, The measuring component (5) is a ranging laser.

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