Flatness detection equipment

Abstract

The utility model provides flatness detection equipment, and the equipment comprises a detection platform which is used for placing a to-be-detected device; the detection device is used for collecting the depth of the to-be-detected surface of the to-be-detected device; the transmission device comprises a first guide rail group and a second guide rail group which are perpendicular to each other; the first guide rail group comprises a first guide rail and a second guide rail parallel to each other; the second guide rail group comprises a third guide rail, the third guide rail is arranged above the first guide rail and the second guide rail, and the third guide rail is slidably connected with the first guide rail and the second guide rail; the detection device is slidably connected with the third guide rail. The flatness detection equipment can collect the depth of the to-be-detected surface of the to-be-detected device placed on the detection platform, and the detection device is in sliding connection with the transmission device, so that the detection device can move on the transmission device to ensure that the collection position completely covers the whole plane of the to-be-detected surface, the collection range is large, and the detection precision is high. And the accuracy and reliability of the flatness detection result of the to-be-detected surface are improved.

Description

Technical Field

[0001] The present disclosure relates to the field of detection technologies, and in particular, to a flatness detection device. Background Art

[0002] The flatness of a pultrusion die refers to the vertical distance difference between the die surface and a reference plane, which has an important impact on the quality and dimensional accuracy of the products generated during the pultrusion process. Regularly detecting the flatness of the pultrusion die and timely repairing the worn components can extend the service life of the die and maintain the stability of the flatness. However, due to reasons such as size matching, limitations of the test range, and test efficiency, existing flatness detection instruments cannot meet the flatness detection requirements of pultrusion dies. Summary of the Utility Model

[0003] To solve the above technical problems, the present disclosure provides a flatness detection device, including:

[0004] A detection platform for placing the device to be detected;

[0005] A detection device for collecting the depth of the surface to be detected of the device to be detected;

[0006] A transmission device including a first guide rail group and a second guide rail group that are perpendicular to each other; the first guide rail group includes a first guide rail and a second guide rail that are parallel to each other, and the first guide rail and the second guide rail are respectively fixed at the edge positions of the detection platform; the second guide rail group includes a third guide rail, the third guide rail is arranged above the first guide rail and the second guide rail, and the third guide rail is respectively slidably connected to the first guide rail and the second guide rail; the detection device is slidably connected to the third guide rail.

[0007] In some embodiments of the present disclosure, the flatness detection device further includes a driving device, and the driving device includes a first driving motor and a second driving motor; the first driving motor is used to drive the third guide rail to slide on the first guide rail and the second guide rail, and the second driving motor is used to drive the detection device to slide on the third guide rail.

[0008] In some embodiments of the present disclosure, a first boss and a second boss are provided on the detection platform, the first guide rail is arranged on the first boss, and the second guide rail is arranged on the second boss;

[0009] A first rack is provided on the first boss, the first rack is arranged parallel to the first guide rail, the first driving motor is fixedly connected to the third guide rail, a first gear is arranged on the output shaft of the first driving motor, and the first gear meshes with the first rack.

[0010] In some embodiments of the present disclosure, the first rack is disposed on a side of the first guide rail facing away from the second guide rail, and the first rack faces the first guide rail.

[0011] In some embodiments of the present disclosure, the flatness detection device further includes a bracket. The third guide rail and the first driving motor are both fixed to the bracket. A second rack is further disposed on the bracket. The second rack is arranged in parallel with the third guide rail. The second driving motor is fixedly connected to the detection device. A second gear is disposed on an output shaft of the second driving motor. The second gear meshes with the second rack.

[0012] In some embodiments of the present disclosure, the bracket includes a bracket body with a U-shaped cross section. The bracket body includes a first plate, and second plates and third plates connected to opposite sides of the first plate. The first plate is slidably connected to the first guide rail and the second guide rail;

[0013] The third guide rail and the second rack are disposed on a surface of the second plate facing away from the third plate. The first driving motor is fixed inside the bracket body and fixed to the first plate.

[0014] In some embodiments of the present disclosure, the second rack is disposed above the third guide rail and the second rack faces upward.

[0015] In some embodiments of the present disclosure, a data acquisition device connected to the detection device is disposed inside the bracket body. The flatness detection device further includes a controller. The controller is connected to the data acquisition device.

[0016] In some embodiments of the present disclosure, the flatness detection device further includes a mounting plate. The second driving motor and the detection device are fixed to a first surface of the mounting plate. A second surface of the mounting plate opposite to the first surface is slidably connected to the third guide rail.

[0017] In some embodiments of the present disclosure, the flatness detection device further includes a standard platform structure for calibration. The standard platform structure can be disposed on the detection platform.

[0018] The present disclosure has at least the following effects:

[0019] The flatness detection device provided by the present disclosure can collect the depth of the surface to be detected of the device to be detected placed on the detection platform, so as to determine the flatness of the surface to be detected according to the depth of the surface to be detected subsequently. Among them, the detection device is slidably connected to the transmission device, so the detection device can move on the transmission device to ensure that the acquisition position fully covers the entire plane of the surface to be detected, with a large acquisition range, improving the accuracy and reliability of the flatness detection result of the surface to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 Schematic structural diagram of a flatness detection device according to an exemplary embodiment of the present disclosure;

[0022] Figure 2 Schematic flow chart of a specific example of applying the flatness detection device according to an exemplary embodiment of the present disclosure to a flatness detection method. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some embodiments of the present disclosure, rather than all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present disclosure.

[0024] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present disclosure. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0025] Regularly detecting the flat surface of the pultrusion die and timely repairing the worn parts can extend the service life of the die and maintain the stability of the flatness. However, due to reasons such as size matching, limitations of the test range, and test efficiency, the existing flatness detection instruments cannot meet the flatness detection of the pultrusion die.

[0026] To solve the problems existing in the related art, the present disclosure provides a flatness detection device, which can collect the depth of the surface to be detected of the device to be detected placed on the detection platform, so as to determine the flatness of the surface to be detected according to the depth of the surface to be detected subsequently. Among them, the detection device is slidably connected to the transmission device, so the detection device can move on the transmission device to ensure that the collection positions fully cover the entire plane of the surface to be detected, with a large collection range, improving the accuracy and reliability of the flatness detection result of the surface to be detected.

[0027] An embodiment of the present disclosure provides a flatness detection device, as Figure 1 shown, the flatness detection device 100 includes a detection platform 10, a detection device 20, and a transmission device 30. Among them, the detection platform 10 is used to place the device to be detected. For example, the device to be detected can be a pultrusion mold used in the pultrusion process. The detection device 20 is used to collect the depth of the surface to be detected of the device to be detected. The surface to be detected can be, for example, any one of the outer sides of the pultrusion mold. The transmission device 30 includes a first guide rail group 31 and a second guide rail group 32 that are perpendicular to each other; the first guide rail group 31 includes a first guide rail 311 and a second guide rail 312 that are parallel to each other, and the first guide rail 311 and the second guide rail 312 are respectively fixed at the edge positions of the detection platform 10; the second guide rail group 32 includes a third guide rail 321, and the third guide rail 321 is arranged above the first guide rail 311 and the second guide rail 312, and the third guide rail 321 is slidably connected to the first guide rail 311 and the second guide rail 312 respectively; the detection device 20 is slidably connected to the third guide rail 321.

[0028] In this embodiment, the flatness detection device 100 can collect the depth of the surface to be detected of the device to be detected placed on the detection platform 10, so as to determine the flatness of the surface to be detected according to the depth of the surface to be detected subsequently. Among them, the detection device 20 is slidably connected to the transmission device 30, so the detection device 20 can move on the transmission device 30 to ensure that the collection positions fully cover the entire plane of the surface to be detected, with a large collection range, improving the accuracy and reliability of the flatness detection result of the surface to be detected.

[0029] Exemplarily, during the flatness detection process, the device to be detected is placed on the detection platform 10. The first guide rail 311 and the second guide rail 312 are respectively arranged at the edge positions on both sides of the detection platform 10. The height of the device to be detected relative to the detection platform 10 can be lower than the height of the first guide rail 311 and the second guide rail 312 relative to the detection platform 10. The third guide rail 321 is arranged above the first guide rail 311 and the second guide rail 312, and the third guide rail 321 is respectively slidably connected to the first guide rail 311 and the second guide rail 312. Moreover, the detection device 20 is slidably connected to the third guide rail 321. With such a structural arrangement, the detection device 20 is arranged above the device to be detected. The upper surface of the device to be detected, that is, the surface close to the detection device 20, is the surface to be detected. The orientation of the detection device 20 can be perpendicular to the surface to be detected and towards the surface to be detected. When the detection device 20 acquires the depth of the surface to be detected, the sliding of the detection device 20 on the third guide rail 321 can enable the detection device 20 to move in the extending direction of the third guide rail 321 to acquire the depth of the surface to be detected. The sliding of the third guide rail 321 on the first guide rail 311 and the second guide rail 312 can drive the detection device 20 to move in the extending direction of the first guide rail group 31 to acquire the depth of the surface to be detected. Therefore, within the dimensional range of the mutually perpendicular first guide rail group 31 and second guide rail group 32, the detection device 20 can move to any point and acquire the depth of the corresponding point on the surface to be detected directly below. For example, when the surface to be detected is rectangular, the depth acquisition points of the detection device 20 can be 20 * 6, that is, 20 rows and 6 columns are acquired, a total of 120 depth data. These 120 depth data are evenly distributed on the surface to be detected to ensure that the depth data acquired by the detection device 20 can represent the depth situation of the entire plane of the surface to be detected. It can be understood that in order to reduce the moving displacement of the detection device 20 and improve the detection efficiency, the moving trajectory of the detection device can be an S-shaped trajectory.

[0030] Exemplarily, the detection device 20 includes a point laser sensor and / or a line laser sensor.

[0031] In one embodiment, as Figure 1 shown, the flatness detection device 100 further includes a driving device 40. The driving device 40 includes a first driving motor 41 and a second driving motor 42; the first driving motor 41 is used to drive the third guide rail 321 to slide on the first guide rail 311 and the second guide rail 312, and the second driving motor 42 is used to drive the detection device 20 to slide on the third guide rail 321.

[0032] In this embodiment, the first drive motor 41 drives the third guide rail 321 to slide on the first guide rail 311 and the second guide rail 312, and the second drive motor 42 drives the detection device 20 to slide on the third guide rail 321. It can be understood that the detection device 20 can move under the drive of the drive device 40, thereby enabling the detection device 20 to perform in-depth acquisition at all locations on the surface to be detected of the device to be detected. The acquisition range is large, which can ensure that the acquisition position fully covers the entire plane of the surface to be detected, thereby improving the accuracy and reliability of the flatness detection results of the surface to be detected.

[0033] Exemplarily, both the first drive motor 41 and the second drive motor 42 may be servo motors.

[0034] In one embodiment, if Figure 1 As shown, the detection platform 10 is provided with a first boss 51 and a second boss 52, the first guide rail 311 is provided on the first boss 51, and the second guide rail 312 is provided on the second boss 52. A first rack 61 is provided on the first boss 51, and the first rack 61 is provided in parallel with the first guide rail 311, the first drive motor 41 is fixedly connected with the third guide rail 321, and a first gear (not shown in the figure) is provided on the output shaft of the first drive motor 41, and the first gear is meshed with the first rack 61.

[0035] In this embodiment, the first drive motor 41 is fixedly connected to the third guide rail 321, and the first gear on the output shaft of the first drive motor 41 is meshed with the first rack 61. When the first drive motor 41 moves relative to the first rack 61, it can drive the third guide rail 321 to slide on the first guide rail 311, and correspondingly, it can also drive the third guide rail 321 to slide on the second guide rail 312, thereby realizing the movement of the detection device 20 in the extension direction of the first guide rail group 31. The first drive motor 41 drives the third guide rail 321 to slide on the first guide rail 311 in the above manner. Its structural setting is simple, which is convenient for controlling the movement of the third guide rail 321 in the extension direction of the first guide rail group 31, and the simple structural setting can also reduce the occurrence of equipment failure.

[0036] In one embodiment, if Figure 1 As shown, the first rack 61 is arranged on the side of the first guide rail 311 away from the second guide rail, and the first rack 61 is arranged toward the first guide rail 311. The first rack 61 is arranged on the side of the first guide rail 311 facing the first guide rail 311, that is, the first rack 61 is arranged on the side, which can save space and simplify the appearance of the flatness detection device 100. The first rack 61 is arranged on the side of the first guide rail 311, which can avoid friction caused by front weighing, thereby reducing wear.

[0037] In one embodiment, if Figure 1As shown, the flatness detection device 100 further includes a bracket 74. The third guide rail 321 and the first driving motor 41 are both fixed to the bracket 74. A second rack 62 is also provided on the bracket 74. The second rack 62 is arranged parallel to the third guide rail 321. The second driving motor 42 is fixedly connected to the detection device 20. A second gear (not shown in the figure) is provided on the output shaft of the second driving motor 42. The second gear meshes with the second rack 62.

[0038] In this embodiment, the second driving motor 42 is fixedly connected to the detection device 20. The second gear on the output shaft of the second driving motor 42 meshes with the second rack 62. When the second driving motor 42 moves relative to the second rack 62, it can drive the detection device 20 to slide on the third guide rail 321. The second driving motor 42 drives the detection device 20 to slide on the third guide rail 321 in the above manner. Its structural setting is simple, which is convenient for controlling the movement of the detection device 20 in the extending direction of the second guide rail group 32, and the simple structural setting can also reduce the occurrence of equipment failures.

[0039] In one embodiment, as Figure 1 shown, the bracket 74 includes a bracket body 70 with a U-shaped cross-section. The bracket body 70 includes a first plate 71, and second plates 72 and third plates 73 connected to opposite sides of the first plate 71. The first plate 71 is slidably connected to the first guide rail 311 and the second guide rail 312. The first plate 71 of the bracket body 70 is slidably connected to the first guide rail 311 and the second guide rail 312. The third guide rail 321 and the first driving motor 41 are both fixed to the bracket 74. When the first driving motor 41 drives the third guide rail 321 to slide on the first guide rail 311 and the second guide rail 312, it is to drive the bracket 74 (the first plate of the bracket body 70) to slide on the first guide rail 311 and the second guide rail 312. Thus, the movement of the detection device 20 in the extending direction of the first guide rail group 31 can be realized. Fixing the third guide rail 321 on the bracket body 70 with a U-shaped cross-section, the U-shaped structure is stable, avoiding shaking when the detection device 20 slides on the third guide rail 321. In addition, the U-shaped groove of the bracket body 70 can also be used as a bearing structure to place other components, such as the first driving motor 41 and the data acquisition device 81, improving the appearance neatness of the flatness detection device 100 and the connection stability between components.

[0040] In this embodiment, the third guide rail 321 and the second rack 62 are arranged on the surface of the second plate 72 facing away from the third plate 73. The first driving motor 41 is fixed inside the bracket body 70 and fixed to the first plate 71.

[0041] In this embodiment, the third guide rail 321 and the second rack 62 are arranged on the same side, which facilitates controlling the sliding of the detection device 20 on the third guide rail 321 when the second driving motor 42 moves relative to the second rack 62. The first driving motor 41 is fixed within the U-shaped bracket body 70 and fixed to the first plate 71, which can improve the appearance neatness of the flatness detection device 100 and the connection stability between components, thereby improving the overall stability of the flatness detection device 100.

[0042] In one embodiment, as Figure 1 shown, the second rack 62 is arranged above the third guide rail 321 and the second rack 62 faces upward. The second rack 62 facing upward can provide an upward supporting force for the second gear on the output shaft of the second driving motor 42, which is beneficial to the connection stability between the second driving motor 42 and the second plate 72, thereby improving the stability when the second driving motor 42 drives the detection device 20 to slide on the third guide rail 321.

[0043] In one embodiment, as Figure 1 shown, a data acquisition device 81 connected to the detection device 20 is arranged within the bracket body 70, and the flatness detection device 100 further includes a controller 82, and the controller 82 is connected to the data acquisition device 81.

[0044] In this embodiment, after the detection device 20 acquires the depth of the surface to be detected of the device to be detected, the data acquisition device 81 obtains the data of the depth of the surface to be detected of the device to be detected acquired by the detection device 20, and the data acquisition device 81 then transmits the obtained data of the depth of the surface to be detected to the controller 82 connected to the data acquisition device 81.

[0045] Exemplarily, the controller 82 can be a programmable logic controller. The controller 82 can store the data of the depth of the surface to be detected transmitted by the data acquisition device 81. In addition, the controller 82 can also be connected to the first driving motor 41 and the second driving motor 42, and the controller 82 controls the start-stop and running speed of the first driving motor 41 and the second driving motor 42 to control the movement trajectory and acquisition work of the detection device 20 when acquiring the depth of the surface to be detected, realizing the automatic control of the depth acquisition of the detection device 20.

[0046] Exemplarily, when the controller 82 controls the start-stop and running speed of the first driving motor 41 and the second driving motor 42, and further controls the movement trajectory and acquisition work of the detection device 20 when acquiring the depth of the surface to be detected, the controller 82 controls the first driving motor 41 and the second driving motor 42 to move the detection device 20 to the specified acquisition position, stay for 3 s, the flatness detection device 100 is stable, the depth of the specified point on the surface to be detected is acquired, and then the depth of the next specified point is acquired until all positions are acquired.

[0047] In one embodiment, as Figure 1 shown, the flatness detection device 100 further includes a mounting plate 91. The second driving motor 42 and the detection device 20 are fixed to the first surface of the mounting plate 91, and the second surface of the mounting plate 91 opposite to the first surface is slidably connected to the third guide rail 321. Fixing the second driving motor 42 and the detection device 20 on the first surface of the mounting plate 91, that is, on the same side surface, is beneficial to the assembly neatness of the flatness detection device 100 and saves the assembly space. On the second surface of the mounting plate 91 opposite to the first surface, that is, on the back side of the first surface, being slidably connected to the third guide rail 321, then when the mounting plate 91 slides on the third guide rail 321, the overall movement of the second driving motor 42 and the detection device 20 can be realized. In one embodiment, as Figure 1 shown, the flatness detection device 100 further includes a standard platform structure 90 for calibration, and the standard platform structure 90 can be arranged on the detection platform 10.

[0048] Exemplarily, the standard platform structure 90 can be a 000-level marble platform. During the flatness detection process of the device to be detected, before placing the device to be detected on the detection platform 10 for detection, the standard platform structure 90 can be placed on the detection platform 10 first for calibration of the flatness detection device 100, that is, placing the standard platform structure 90 on the detection platform 10 for flatness detection, and taking the data of the depth of the surface to be detected of the standard platform structure 90 collected as the reference data, which plays the role of calibrating the flatness detection device 100.

[0049] After calibrating the flatness detection device 100 through the standard platform structure 90, then place the device to be detected on the detection platform 10 for detection, which can ensure the accuracy of the flatness detection device 100 and avoid the problem of the decrease in the detection accuracy of the flatness detection device 100 caused by the wear of the mechanical structure after the flatness detection device 100 has been used for a long time.

[0050] In one embodiment, as Figure 1 shown, the flatness detection device 100 further includes a determination device 83. The determination device 83 is connected to the controller 82 and can determine the flatness detection result of the surface to be detected according to the collected depth data of the surface to be detected through the 3D point cloud processing method, which can ensure the detection accuracy and detection efficiency of the flatness.

[0051] Exemplarily, the test software reads the depth data obtained by the controller 82, screens the obtained depth data, removes individual points where the depth data is not obtained, and takes the effective depth data minus the reference data of the standard platform structure 90 as the actual depth data. The determination device 83 fits a plane through the 3D point cloud processing method and calculates the flatness of the surface to be detected of the device to be detected.

[0052] Exemplarily, the determination device 83 may be an industrial control computer.

[0053] In one embodiment, as Figure 1 shown, the flatness detection device 100 further includes a display device 84. The display device is connected to the controller 82 and the determination device 83, and the display device 84 can display the software for flatness detection, so as to facilitate the operator to track the process and results of flatness detection.

[0054] In one embodiment, as Figure 1 shown, the flatness detection device 100 further includes a support frame 92. The support frame 92 is arranged below the detection platform 10 and can provide a supporting effect for the detection platform 10.

[0055] In one embodiment, the flatness detection device further includes a data management system, and the data management system manages the collected depth data and the results of flatness detection. Exemplarily, the data management system may be a MySQL database management system.

[0056] To more clearly explain the technical solution of the present disclosure, as Figure 2 shown, the following gives a specific example of the flatness detection device provided by an embodiment of the present disclosure applied to the flatness detection method.

[0057] S10. Place the standard platform structure on the detection platform to calibrate the flatness detection device, and obtain reference data; remove the standard platform structure;

[0058] S20. Place the device to be detected on the detection platform, and control the driving device to drive the detection device to slide on the transmission device through the controller to collect the depth of the surface to be detected;

[0059] S30. The test software screens the depth data of the surface to be detected collected;

[0060] S40. Take the difference between the filtered depth data and the reference data as the actual depth data;

[0061] S50. The determination device fits a plane by a 3D point cloud processing method;

[0062] S60. Calculate the flatness of the surface to be detected of the device to be detected;

[0063] S70. Manage the collected depth data and the results of flatness detection through the MySQL database management system.

[0064] In the above specific examples, when applying the flatness detection device to flatness detection, it only needs to place the device to be detected on the detection platform and start the flatness detection device to achieve efficient detection of the flatness of the surface to be detected of the device to be detected. When applying this flatness detection device to the regular flatness detection of pultrusion dies, the state of the flatness of the pultrusion die can be confirmed regularly, and the deformed pultrusion die can be maintained in time.

[0065] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A flatness detection device, characterized in that: include: A testing platform, used for placing devices to be tested; A detection device, used for collecting the depth of the surface to be detected of the device to be detected; The transmission device includes a first guide rail group and a second guide rail group that are perpendicular to each other; the first guide rail group includes a first guide rail and a second guide rail that are parallel to each other, and the first guide rail and the second guide rail are respectively fixed to the edge position of the detection platform; the second guide rail group includes a third guide rail, and the third guide rail is arranged above the first guide rail and the second guide rail, and the third guide rail is respectively slidably connected to the first guide rail and the second guide rail; the detection device is slidably connected to the third guide rail.

2. The flatness detection device according to claim 1, characterized in that: The flatness detection device also includes a driving device, which includes a first driving motor and a second driving motor; the first driving motor is used to drive the third guide rail to slide on the first guide rail and the second guide rail, and the second driving motor is used to drive the detection device to slide on the third guide rail.

3. The flatness detection device according to claim 2, characterized in that: The detection platform is provided with a first boss and a second boss, the first guide rail is provided on the first boss, and the second guide rail is provided on the second boss; A first rack is arranged on the first boss, and the first rack is arranged parallel to the first guide rail. The first drive motor is fixedly connected to the third guide rail. A first gear is arranged on the output shaft of the first drive motor, and the first gear is meshed with the first rack.

4. The flatness detection device according to claim 3, characterized in that: The first rack is disposed on a side of the first guide rail that is away from the second guide rail, and the first rack is disposed toward the first guide rail.

5. The flatness detection device according to claim 2, characterized in that: The flatness detection equipment also includes a bracket, the third guide rail and the first drive motor are both fixed to the bracket, a second rack is further provided on the bracket, the second rack is arranged parallel to the third guide rail, the second drive motor is fixedly connected to the detection device, a second gear is provided on the output shaft of the second drive motor, and the second gear is meshed with the second rack.

6. The flatness detection device according to claim 5, characterized in that: The bracket comprises a bracket body with a U-shaped cross section, the bracket body comprises a first plate and a second plate and a third plate connected to opposite sides of the first plate, the first plate is slidably connected to the first guide rail and the second guide rail; The third guide rail and the second rack are arranged on a surface of the second plate facing away from the third plate, and the first drive motor is fixed in the bracket body and fixed on the first plate.

7. The flatness detection device according to claim 6, characterized in that: The second rack is disposed above the third guide rail and the second rack is disposed upward.

8. The flatness detection device according to claim 6, characterized in that: A data acquisition device connected to the detection device is arranged in the support body, and the flatness detection equipment also includes a controller, and the controller is connected to the data acquisition device.

9. The flatness detection device according to claim 2, characterized in that: The flatness detection device also includes a mounting plate, the second drive motor and the detection device are fixed to a first surface of the mounting plate, and a second surface of the mounting plate, which is away from the first surface, is slidably connected to the third guide rail.

10. The flatness detection device according to any one of claims 1 to 9, characterized in that: The flatness detection device further comprises a standard platform structure for calibration, and the standard platform structure can be arranged on the detection platform.

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