Depth detection device for surface defect of main bearing of heading machine

Abstract

The utility model provides a heading machine main bearing surface defect depth detection device, which comprises a base, a support, a fitting assembly and a detection assembly, and is characterized in that the base is provided with moving wheels, and the moving wheels are used for driving the base to move to a leveling device; the bracket is vertically arranged on the base; the attaching assembly is installed on the support and used for abutting against the side face of the main bearing. The detection assembly is installed on the support, and the detection assembly is used for abutting against the detected surface of the main bearing. The device is arranged on the leveling device through the base and the moving wheels, it is guaranteed that the device is located on the horizontal plane, the attaching assembly and the detection assembly are both arranged on the base, the horizontal plane is used as a positioning face during use, influences of other parts on the end face of the main bearing are avoided, and the attaching assembly abuts against the side face of the main bearing; and finally, the defect of the detected surface is detected through the detection assembly, so that the precision of a detection result is improved.

Description

Technical Field

[0001] The present application relates to tunnel construction device detection technology, and in particular to a device for detecting the depth of surface defects of a main bearing of a tunnel boring machine. Background Art

[0002] The main bearing of a tunnel boring machine is a key component of the tunnel boring machine. It bears the main load during the operation of the tunnel boring machine and works in very harsh conditions. The safety performance of the main bearing of the tunnel boring machine determines the life of the entire machine. Therefore, during the remanufacturing process of the main bearing, it is necessary to detect the depth and size of some minor defects on the surface of key components such as rings and rollers (such as the depth of grooves on the raceway surface, etc.) to determine whether they meet the technical requirements and use conditions.

[0003] In the related technical solutions, the detection device used to detect the depth of subtle defects on the surface of the main bearing of the tunnel boring machine is generally positioned on the end face of the main bearing, and then a detection part such as a micrometer is attached to the detected surface and moved along the detected surface. If the pointer of the micrometer jumps, it means that there is a defect on the detected surface.

[0004] However, when the above solution is used in actual testing, other parts may be installed on the end face of the main bearing, which makes the roughness of the positioning surface higher and the error of the final test result larger. Utility Model Content

[0005] In order to overcome the above-mentioned defects in the related art, the purpose of the present application is to provide a device for detecting the depth of surface defects of a main bearing of a tunnel boring machine, which is helpful in reducing the error of the detection result.

[0006] The present application provides a device for detecting depth of surface defects of a main bearing of a roadheader, comprising:

[0007] A base, wherein the base is provided with moving wheels, and the moving wheels are used to drive the base to move onto the leveling device;

[0008] A bracket, the bracket being vertically arranged on the base;

[0009] A fitting component, the fitting component is installed on the bracket, and the fitting component is used to abut against the side surface of the main bearing;

[0010] A detection component is installed on the bracket, and the detection component is used to abut against the detected surface of the main bearing.

[0011] In a possible implementation, the base includes a support rod, and the moving wheels are arranged at both ends of the support rod;

[0012] Alternatively, the base includes a support plate, and the moving wheel is arranged at the lower end of the support plate;

[0013] The moving wheel is a universal wheel.

[0014] In a possible implementation, the bracket includes a vertical rod, which is perpendicular to the base and fixedly connected to the base. The vertical rod is provided with a plurality of mounting holes, and the plurality of mounting holes are spaced apart along an extension direction of the vertical rod. The fitting component and the detection component are both fixed in the corresponding mounting holes.

[0015] In a possible implementation, the bracket further includes a handle plate, and the handle plate is detachably connected to the vertical rod;

[0016] The handle plate includes a first plate body and two second plate bodies, the two second plate bodies are respectively connected to two ends of the first plate body, the first plate body is provided with a first through hole, the vertical rod is penetrated in the first through hole, and the first plate body is detachably connected to the mounting hole.

[0017] In one possible implementation, the fitting assembly includes a connecting member, an adapter plate and a plurality of abutments, wherein the connecting member is detachably arranged on the vertical rod, the adapter plate is located at an end of the connecting member facing away from the vertical rod, and the plurality of abutments are arranged on the adapter plate, and the abutments are used to abut against the side of the main bearing.

[0018] In a possible implementation, the connecting member is provided with a second through hole and a third through hole, the second through hole passes through the connecting member, the third through hole is opened on the side wall of the connecting member and is connected to the second through hole, the vertical rod is passed through the second through hole, and the fastener is detachably connected to the mounting hole after passing through the third through hole.

[0019] In a possible implementation, the adapter plate is arc-shaped and bent away from the vertical rod, and the middle portion of the adapter plate is connected to the connecting member;

[0020] The plurality of abutment members include two first abutment plates and two second abutment plates, the length of the first abutment plates is greater than the length of the second abutment plates, and the second abutment plates are arranged close to the middle of the adapter plate.

[0021] In a possible implementation, the end of the first abutment plate facing away from the adapter plate is connected to a first positioning wheel, the end of the second abutment plate facing away from the adapter plate is connected to a second positioning wheel, and both the first positioning wheel and the second positioning wheel are flexible wheels.

[0022] In a possible implementation, the detection assembly includes a mounting plate and a detection member, the mounting plate is detachably connected to the vertical rod, the detection member is arranged at an end of the mounting plate away from the vertical rod, and the detection member is used to abut against the detected surface of the main bearing.

[0023] In a possible implementation, a fourth through hole is provided on the mounting plate, and the fastener passes through the fourth through hole and is detachably connected to the mounting hole.

[0024] The present application provides a device for detecting the depth of surface defects of the main bearing of a tunnel boring machine, including: a base, a bracket, a fitting component and a detection component. The base is provided with a moving wheel, and the moving wheel is used to drive the base to move to a leveling device; the bracket is vertically arranged on the base; the fitting component is installed on the bracket, and the fitting component is used to abut against the side of the main bearing; the detection component is installed on the bracket, and the detection component is used to abut against the detected surface of the main bearing. The present application sets the device on the leveling device through the base and the moving wheel to ensure that the device is on a horizontal plane, and sets the fitting component and the detection component on the base. When in use, the horizontal plane is used as the positioning plane, which is not affected by other components on the end face of the main bearing, and the fitting component is used to abut against the side of the main bearing. Finally, the defects of the detected surface are detected by the detection component, which is conducive to improving the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technical descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the assembly structure of the main bearing in the solution of the related art;

[0027] Figure 2 A simplified structural diagram of a device for detecting surface defect depth of a main bearing of a tunnel boring machine provided in one embodiment of the present application;

[0028] Figure 3 A simplified structural diagram of a vertical rod provided in one embodiment of the present application;

[0029] Figure 4 A simplified structural diagram of a handle plate provided in one embodiment of the present application;

[0030] Figure 5 A simplified structural diagram of a connector provided in one embodiment of the present application;

[0031] Figure 6 A simplified structural diagram of an adapter board provided in one embodiment of the present application;

[0032] Figure 7 A simplified structural diagram of a first abutment plate provided in one embodiment of the present application;

[0033] Figure 8 A simplified structural diagram of a second abutment plate provided in one embodiment of the present application;

[0034] Fig. 9 A simplified structural diagram of a mounting plate provided in one embodiment of the present application.

[0035] Reference numerals:

[0036] 10-main bearing; 11-detected surface;

[0037] 20- sealing ring;

[0038] 30-connecting ring;

[0039] 40-flange;

[0040] 100-base; 110-moving wheel;

[0041] 200-bracket; 210-vertical rod; 211-mounting hole; 220-handle plate; 221-first plate body; 222-second plate body; 223-first through hole;

[0042] 300-fitting assembly; 310-connecting piece; 311-second through hole; 312-third through hole; 320-adapter plate; 321-fixing hole; 330-first abutting plate; 331-first long hole; 340-second abutting plate; 341-second long hole; 350-first positioning wheel; 360-second positioning wheel;

[0043] 400 - detection component; 410 - mounting plate; 411 - fourth through hole; 420 - detection piece. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0045] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0046] As described in the background technology, in the scheme of the related technology, when using the detection device to detect the surface defects of the main bearing, it is necessary to use the end face of the main bearing as the positioning surface, and then stick the micrometer and other detection parts on the surface to be detected (the side of the main bearing) and move along the surface to be detected. If the pointer of the micrometer jumps, it means that there are defects on the surface to be detected. However, during the actual detection, other parts may be installed on the end face of the main bearing, which makes the roughness of the positioning surface higher and the error of the final detection result is larger. Specifically, during the production process, the main bearing cannot always be in the ideal test condition, and it is often encountered that the main bearing is assembled on other parts of the main drive. Figure 1 For the assembly structure diagram of the main bearing in the related technology solution, please refer to Figure 1 The end face of the main bearing 10 is installed with components such as a sealing ring 20, a connecting ring 30 and a flange 40. Therefore, when the detection device is used to detect surface defects of the main bearing 10, the positioning surface of the detection device is actually the end face of the flange 40. However, the roughness of the end face of the flange 40 is much greater than that of the end face of the main bearing 10, which results in a large error in the measurement result of the detected surface 11.

[0047] In view of this, an embodiment of the present application aims to provide a device for detecting the depth of surface defects of a main bearing of a tunnel boring machine. The device is set on a leveling device through a base and a movable wheel to ensure that the device is on a horizontal plane. The fitting component and the detection component are both set on the base. When in use, the horizontal plane is used as the positioning plane, and is not affected by other components on the end face of the main bearing. The fitting component is used to abut against the side of the main bearing. Finally, the defects on the detected surface are detected through the detection component, which is beneficial to improve the accuracy of the detection results.

[0048] The contents of the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the contents of the present application in more detail.

[0049] Figure 2 A simplified structural diagram of a device for detecting surface defect depth of a main bearing of a tunnel boring machine provided in one embodiment of the present application; Figure 3 A simplified structural diagram of a vertical rod provided in one embodiment of the present application; Figure 4 A simplified structural diagram of a handle plate provided in one embodiment of the present application; Figure 5 A simplified structural diagram of a connector provided in one embodiment of the present application; Figure 6 A simplified structural diagram of an adapter board provided in one embodiment of the present application; Figure 7 A simplified structural diagram of a first abutment plate provided in one embodiment of the present application; Figure 8 A simplified structural diagram of a second abutment plate provided in one embodiment of the present application; Fig. 9 A simplified structural diagram of a mounting plate provided in one embodiment of the present application.

[0050] Please refer to Figure 2-Figure 9 This embodiment provides a device for detecting the depth of surface defects of a main bearing of a roadheader, comprising:

[0051] The base 100 is provided with a moving wheel 110, and the moving wheel 110 is used to drive the base 100 to move to the leveling device. The base 100 is used to provide support for other components, so it is preferably made of a harder material such as metal. The moving wheel 110 is rotatably connected to the base 100 to drive the base 100 to move. The leveling device is placed on the ground. After the moving wheel 110 drives the base 100 to move to the leveling device, it can be ensured that the entire detection device uses the horizontal plane as the reference plane, so that it is not affected by other components on the end surface of the main bearing, which is conducive to reducing the error of the detection result.

[0052] Bracket 200, bracket 200 is vertically arranged on the base 100, and bracket 200 is used to install the bonding component 300 and the detection component 400; the user can also push the bracket 200 so that the bonding component 300 and the detection component 400 are always in contact with the main bearing during the detection process, and by pushing the bracket 200, the detection device is moved relative to the main bearing, thereby realizing the detection of the detected surface and ensuring the accuracy of the detection result.

[0053] The laminating component 300 is installed on the bracket 200. The laminating component 300 is used to abut against the side of the main bearing, so as to ensure that the detection device does not separate from the main bearing during the detection process.

[0054] The detection component 400 is mounted on the bracket 200 . The detection component 400 is used to abut against the detected surface of the main bearing. Driven by the bracket 200 , the detection component 400 moves along the detected surface to detect the detected surface.

[0055] In this embodiment, the device is set on the leveling device through the base 100 and the moving wheel 110 to ensure that the device is on a horizontal plane. The bonding component 300 and the detection component 400 are both set on the base 100. When in use, the horizontal plane is used as the positioning surface, which is not affected by other components on the end surface of the main bearing. The bonding component 300 is used to abut against the side of the main bearing. Finally, the defects of the detected surface are detected by the detection component 400, which is beneficial to improve the accuracy of the detection results.

[0056] like Figure 2 As shown, in a possible implementation, the base 100 of this embodiment includes a support rod, and the moving wheels 110 are arranged at both ends of the support rod. The base 100 is arranged in the form of a support rod, so that the space occupied by the base 100 can be small, thereby facilitating the movement of the base 100.

[0057] In another possible embodiment, the base 100 includes a support plate, and the moving wheels 110 are arranged at the lower end of the support plate. For example, the support plate can be a square plate, and the moving wheels 110 are arranged at the four corners of the support plate; the base 100 is arranged in the form of a support plate, so that the base 100 can provide more stable support, which is convenient for installing other components.

[0058] Preferably, the moving wheel 110 of this embodiment is a universal wheel, so that the base 100 can be driven to move and turn by the moving wheel 110 .

[0059] like Figure 3 As shown, in a possible implementation, the bracket 200 of this embodiment includes a vertical rod 210, the vertical rod 210 is perpendicular to the base 100 and fixedly connected to the base 100, and a plurality of mounting holes 211 are provided on the vertical rod 210, and the plurality of mounting holes 211 are arranged at intervals along the extension direction of the vertical rod 210, and the laminating component 300 and the detection component 400 are both fixed in the corresponding mounting holes 211. Exemplarily, when the base 100 is a support rod, the support rod can be inserted into the mounting hole 211 of the lowermost section of the vertical rod 210; when the base 100 is a support plate, the lower end of the vertical rod 210 can be welded and fixed to the base 100. The plurality of mounting holes 211 are provided on the vertical rod 210, so as to facilitate adjusting the height of the laminating component 300 and the detection component 400 according to actual needs, so as to adapt to different detection requirements.

[0060] In a possible implementation, the bracket 200 of this embodiment further includes a handle plate 220, which is detachably connected to the vertical rod 210. The user can apply force by holding the handle plate 220, so that the fitting component 300 and the detection component 400 abut against the main bearing.

[0061] Specifically, Figure 4 As shown, the handle plate 220 of this embodiment includes a first plate body 221 and two second plate bodies 222. The two second plate bodies 222 are respectively connected to the two ends of the first plate body 221. The first plate body 221 and the two second plate bodies 222 can be integrally formed, thereby improving the overall strength of the handle plate 220 and improving production efficiency. The first plate body 221 is provided with a first through hole 223, and the vertical rod 210 is penetrated in the first through hole 223; the first plate body 221 and the mounting hole 211 can be detachably connected, for example, the first plate body 221 and the mounting hole 211 can be detachably connected by fasteners such as screws, so as to facilitate the adjustment of the height of the handle plate 220 on the vertical rod 210.

[0062] Please continue to refer to Figure 2In a possible implementation, the fitting assembly 300 of this embodiment includes a connecting member 310, an adapter plate 320, and a plurality of abutting members. The connecting member 310 is detachably arranged on the vertical rod 210 to realize a detachable connection between the fitting assembly 300 and the vertical rod 210, so as to facilitate adjustment of the height of the fitting assembly 300 on the vertical rod 210. The adapter plate 320 is located at one end of the connecting member 310 away from the vertical rod 210, and a plurality of abutting members are arranged on the adapter plate 320, and the abutting members are used to abut against the side of the main bearing.

[0063] Please refer to Figure 5 In this embodiment, the connecting member 310 is provided with a second through hole 311 and a third through hole 312. The second through hole 311 passes through the connecting member 310, and the third through hole 312 is opened on the side wall of the connecting member 310 and is connected to the second through hole 311. The vertical rod 210 is passed through the second through hole 311, and the fastener is detachably connected to the mounting hole 211 after passing through the third through hole 312. The fastener can be, for example, a screw, a bolt, etc.

[0064] Please refer to Figure 6 The adapter plate 320 of this embodiment is arc-shaped and is bent away from the vertical rod 210, so that the shape of the adapter plate 320 matches the side of the main bearing. The adapter plate 320 is provided with a plurality of fixing holes 321, so that the adapter plate 320 is connected to the connecting member 310 and the abutting member through the fixing holes 321.

[0065] Exemplarily, the adapter plate 320 of this embodiment is provided with five fixing holes 321, and the fixing hole 321 located in the middle of the adapter plate 320 is connected to the second through hole 311 on the connecting member 310; for example, a detachable connection can be achieved by fasteners such as screws and bolts.

[0066] The plurality of abutting members include two first abutting plates 330 and two second abutting plates 340, the length of the first abutting plates 330 is greater than the length of the second abutting plates 340, and the second abutting plates 340 are arranged near the middle of the adapter plate 320. In other words, the two fixing holes 321 at both ends of the adapter plate 320 are used to fix the two first abutting plates 330, and the remaining two fixing holes 321 are used to fix the two second abutting plates 340.

[0067] like Figure 7 and Figure 8 As shown, the end of the first abutment plate 330 facing away from the adapter plate is connected to the first positioning wheel 350, and the first abutment plate 330 may be provided with a first long hole 331, one end of the first long hole 331 is connected to the fixing hole 321 of the adapter plate 320 through a fastener, and the other end of the first long hole 331 is connected to the first positioning wheel 350. Providing the first long hole 331 on the first abutment plate 330 also facilitates adjusting the extension length of the first abutment plate 330 according to actual needs.

[0068] The second positioning wheel 360 is connected to one end of the second abutting plate 340 away from the adapter plate, and a second long hole 341 may be provided on the second positioning wheel 360. One end of the second long hole 341 is connected to the fixing hole 321 of the adapter plate 320 through a fastener, and the other end of the second long hole 341 is connected to the second positioning wheel 360. Providing the second long hole 341 on the second abutting plate 340 also facilitates adjusting the extension length of the second abutting plate 340 according to actual needs.

[0069] In this embodiment, the first positioning wheel 350 and the second positioning wheel 360 are both flexible wheels, for example, they can be made of flexible materials such as nylon to avoid damage to the main bearing.

[0070] Please continue to refer to Figure 2 The detection assembly 400 of this embodiment includes a mounting plate 410 and a detection member 420. The mounting plate 410 is detachably connected to the vertical rod 210, so as to facilitate the adjustment of the height of the detection assembly 400 on the vertical rod 210. The detection member 420 is arranged at one end of the mounting plate 410 away from the vertical rod 210. The detection member 420 is used to abut against the detected surface of the main bearing. In this embodiment, the detection member 420 includes a micrometer and a magnetic base. The pointer of the micrometer abuts against the detected surface. If the pointer jumps during the detection process, it indicates that there is a surface defect at that position.

[0071] like Fig. 9 As shown, the mounting plate 410 of this embodiment is provided with a fourth through hole 411 , and the fastener passes through the fourth through hole 411 and is detachably connected to the mounting hole 211 . The fastener may be, for example, a screw, a bolt, or the like.

[0072] When the detection device of this embodiment is in use, a leveling device may be placed on the ground, and the base 100 may be moved onto the leveling device, thereby ensuring that the detection device uses a horizontal plane as a positioning surface.

[0073] Then the height of the connecting member 310 can be adjusted to adjust the height of the entire fitting assembly 300; the extension length of the two first abutment plates 330 and the two second abutment plates 340 on the adapter plate 320 is adjusted to make the first positioning wheel 350 and the second positioning wheel 360 fit onto the main bearing.

[0074] Then, the height of the mounting plate 410 can be adjusted according to the height of the surface to be detected, thereby adjusting the height of the entire detection assembly 400; the posture of the micrometer and the magnetic base can be adjusted according to the position of the surface to be detected, so that the pointer of the micrometer abuts against the surface to be detected.

[0075] Finally, the user holds the handle plate 220 to apply pressure and thrust, so that the first positioning wheel 350 and the second positioning wheel 360 are tightly attached to the main bearing and move on the main bearing. At this time, the pointer of the micrometer slides along the inspected surface to detect surface defects on the inspected surface.

[0076] In this embodiment, the device is set on the leveling device through the base 100 and the moving wheel 110 to ensure that the device is on a horizontal plane. The bonding component 300 and the detection component 400 are both set on the base 100. When in use, the horizontal plane is used as the positioning surface, which is not affected by other components on the end surface of the main bearing. The bonding component 300 is used to abut against the side of the main bearing. Finally, the defects of the detected surface are detected by the detection component 400, which is beneficial to improve the accuracy of the detection results.

[0077] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] It should be noted that in the description of this application, the terms "first" and "second" are only used to facilitate the description of different components, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0080] The various embodiments or implementation methods in the present application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0081] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, 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 device for detecting surface defects of a main bearing of a tunnel boring machine, characterized in that: include: A base, wherein the base is provided with moving wheels, and the moving wheels are used to drive the base to move onto the leveling device; A bracket, the bracket being vertically arranged on the base; A fitting component, the fitting component is installed on the bracket, and the fitting component is used to abut against the side surface of the main bearing; A detection component is installed on the bracket, and the detection component is used to abut against the detected surface of the main bearing.

2. The device for detecting surface defect depth of main bearing of a tunnel boring machine according to claim 1, characterized in that: The base comprises a support rod, and the moving wheels are arranged at both ends of the support rod; Alternatively, the base includes a support plate, and the moving wheel is arranged at the lower end of the support plate; The moving wheel is a universal wheel.

3. The device for detecting surface defect depth of main bearing of a tunnel boring machine according to claim 1, characterized in that: The bracket includes a vertical rod, which is perpendicular to the base and fixedly connected to the base. The vertical rod is provided with a plurality of mounting holes, which are spaced apart along the extension direction of the vertical rod. The fitting component and the detection component are both fixed in the corresponding mounting holes.

4. The device for detecting surface defect depth of main bearing of a tunnel boring machine according to claim 3, characterized in that: The bracket also includes a handle plate, and the handle plate is detachably connected to the vertical rod; The handle plate includes a first plate body and two second plate bodies, the two second plate bodies are respectively connected to two ends of the first plate body, the first plate body is provided with a first through hole, the vertical rod is penetrated in the first through hole, and the first plate body is detachably connected to the mounting hole.

5. The device for detecting surface defect depth of main bearing of a tunnel boring machine according to claim 3, characterized in that: The fitting assembly includes a connecting member, an adapter plate and a plurality of abutting members. The connecting member is detachably arranged on the vertical rod. The adapter plate is located at one end of the connecting member away from the vertical rod. The plurality of abutting members are all arranged on the adapter plate. The abutting members are used to abut against the side of the main bearing.

6. The device for detecting surface defect depth of main bearing of a roadheader according to claim 5, characterized in that: The connecting member is provided with a second through hole and a third through hole, the second through hole passes through the connecting member, the third through hole is opened on the side wall of the connecting member and is connected with the second through hole, the vertical rod is passed through the second through hole, and the fastener is detachably connected to the mounting hole after passing through the third through hole.

7. The device for detecting surface defect depth of main bearing of a roadheader according to claim 6, characterized in that: The adapter plate is arc-shaped and bends away from the vertical rod, and the middle part of the adapter plate is connected to the connecting piece; The plurality of abutment members include two first abutment plates and two second abutment plates, the length of the first abutment plates is greater than the length of the second abutment plates, and the second abutment plates are arranged close to the middle of the adapter plate.

8. The device for detecting surface defect depth of main bearing of a roadheader according to claim 7, characterized in that: One end of the first abutment plate facing away from the adapter plate is connected to a first positioning wheel, and one end of the second abutment plate facing away from the adapter plate is connected to a second positioning wheel. Both the first positioning wheel and the second positioning wheel are flexible wheels.

9. The device for detecting surface defect depth of main bearing of a roadheader according to claim 3, characterized in that: The detection assembly includes a mounting plate and a detection member, wherein the mounting plate is detachably connected to the vertical rod, and the detection member is arranged at an end of the mounting plate away from the vertical rod, and the detection member is used to abut against the detected surface of the main bearing.

10. The device for detecting surface defect depth of main bearing of a roadheader according to claim 9, characterized in that: The mounting plate is provided with a fourth through hole, and the fastener is detachably connected to the mounting hole after passing through the fourth through hole.

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