Detection device

Abstract

The embodiment of the utility model provides a detection device. The detection device comprises a carrier plate, a first bearing part and a second bearing part, a clamping groove allowing a to-be-tested piece to be clamped in a rotating mode is formed in the first bearing piece. One side end of the clamping groove is used for exposing the to-be-tested end face of the to-be-tested piece. A mounting part corresponding to the side end of the clamping groove is formed on the second bearing part, the mounting part is used for loading a detection part with a detection end, and the detection end is configured to deviate from the axis direction of the to-be-detected part and extend in the direction parallel to the axis to abut against the to-be-detected end face; and the detection piece forms a detection signal of a corresponding signal value based on the distance between the detection end and the detected object. When the to-be-detected piece is rotated, the detection end passes through the corresponding rotation path and detects all areas on the to-be-detected end face, so that the perpendicularity condition between the to-be-detected end face and the axis direction is judged based on the signal value change of the detection signal. Through the arrangement, the cost of existing equipment for detecting the perpendicularity condition of the end face can be reduced, and the detection efficiency of detecting the perpendicularity of the end face can be improved.

Description

Technical Field

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

[0002] When testing the verticality of the bottom surface of the test piece, such as an external threaded oil pipe joint, the existing testing methods usually require the use of a visual inspection instrument, a coaxiality instrument or a three-coordinate measuring machine for measurement, but the cost of these devices is relatively high. Secondly, due to the cumbersome operation of these devices and the limitations of the use environment, the detection efficiency of the verticality of the bottom surface of the test piece is low. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present disclosure is to provide a detection device to solve the problems in the related art.

[0004] The first aspect of the present disclosure provides a detection device, comprising:

[0005] Carrier board;

[0006] A first carrier is disposed on the carrier plate, forming a slot for rotatably clamping the test piece; a side end of the slot allows the end face of the test piece to be exposed;

[0007] A second carrier is provided on the carrier plate, forming a mounting portion corresponding to the side end of the card slot, the mounting portion is used to load a detection member having a detection end, the detection end is configured to deviate from the axial direction of the object to be detected but extend parallel to the axial direction and abut against the end surface to be detected; the detection member forms a detection signal of a corresponding signal value based on the distance between the detection end and the object to be detected;

[0008] When the test piece is rotated, the detection end passes along the corresponding rotation path and detects various areas on the test end surface, so as to determine the perpendicularity between the test end surface and the axial direction based on the change in the signal value of the detection signal.

[0009] In an embodiment of the first aspect, an end portion of the detection end is arranged so that a union of regions detected along the rotation path can cover the entire end surface.

[0010] In an embodiment of the first aspect, the width of the card slot is implemented to gradually decrease from an opening located on the side wall of the first carrier to the inside along a direction perpendicular to the axis; the detection device also includes a pressing member, one end of which is detachably provided on the carrier plate, and the other end covers the opening and is close to the first carrier.

[0011] In an embodiment of the first aspect, the detection device further comprises a third carrier disposed on the carrier plate, and the pressing member is detachably disposed on the third carrier; and / or the pressing member is elastic.

[0012] In an embodiment of the first aspect, the first bearing member and the second bearing member are arranged on the carrier plate with an adjustable spacing in the axial direction.

[0013] In an embodiment of the first aspect, a first adjustment groove is formed on the top wall of the carrier plate along the axial direction and passes through the top and bottom walls, a first threaded hole is formed on the bottom wall of the first carrier member along the vertical direction, and a second threaded hole is formed on the bottom wall of the second carrier member along the vertical direction, and the first carrier member and the second carrier member are fixed to the carrier plate by fixing bolts.

[0014] In an embodiment of the first aspect, a guide groove extending along the axial direction is formed on the top wall of the carrier plate, and the bottoms of the first carrier and the second carrier are slidably engaged with the guide groove.

[0015] In an embodiment of the first aspect, the mounting portion is implemented as a fixing hole, which is formed on the second supporting member along the axis, and a second adjustment groove which is connected to the fixing hole and passes through the axis is formed on the top wall of the second supporting member, and a third threaded hole which passes through the second adjustment groove is formed on the side wall of the second supporting member perpendicular to the axis, and an adjustment bolt is threaded into the third threaded hole.

[0016] In an embodiment of the first aspect, an observation port is formed at one end of the pressing member facing the detection end, so as to facilitate observation of whether the detection end abuts against the end surface to be detected.

[0017] In an embodiment of the first aspect, the hardness of the first carrier is greater than the hardness of the test piece.

[0018] As described above, a detection device is provided in an embodiment of the present disclosure, including a carrier, a first carrier and a second carrier. The first carrier is arranged on the carrier to form a slot for allowing the test piece to be rotatably mounted; one side end of the slot allows the end face of the test piece to be exposed. The second carrier is arranged on the carrier to form a mounting portion corresponding to the side end of the slot, and the mounting portion is used to load a detection piece with a detection end, and the detection end is configured to deviate from the axial direction of the test piece but extend parallel to the axial direction to abut against the end face to be tested; the detection piece forms a detection signal of a corresponding signal value based on the distance between the detection end and the object to be tested. Wherein, when the test piece is rotated, the detection end passes through and detects each area on the test end face along the corresponding rotation path, so as to judge the verticality between the test end face and the axial direction based on the change of the signal value of the detection signal. Through the above-mentioned setting, the present application can reduce the cost of the existing equipment for detecting the verticality of the end face, is easy to operate, and can also speed up the detection efficiency of the verticality of the end face. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows the overall structure diagram of the detection device in the embodiment of the present disclosure;

[0020] Figure 2 FIG. 1 is a schematic diagram of the structure of the first bearing member and the pressing member in the embodiment of the present disclosure. Figure 2

[0021] Figure 3 ] is a schematic diagram of the overall structure of another embodiment of the first carrier in the present disclosure.

[0022] Figure 4 , which is a schematic overall cross-sectional view of the detection device in the embodiment of the present disclosure;

[0023] Figure 5 , which is a schematic cross-sectional view of the second carrier in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0024] The following is an explanation of the embodiments of the present disclosure by specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the information disclosed by the present disclosure. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in the present disclosure can also be modified or changed in various ways according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0025] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0026] In the representations of the present disclosure, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" and the like mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. Moreover, the specific features, structures, materials or characteristics represented may be combined in any one or a group of embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples represented in the present disclosure and the features of different embodiments or examples, unless they are mutually contradictory.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of the present disclosure, "a group" means two or more, unless otherwise clearly and specifically defined.

[0028] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same reference numerals are given to the same or similar components throughout the specification.

[0029] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0030] Although the terms first, second, etc. are used to represent various elements in this article in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate that there are the described features, steps, operations, elements, modules, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or a group of other features, steps, operations, elements, modules, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0031] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0032] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which the present disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the message of the present disclosure, and shall not be overly interpreted as ideal or very formal meanings unless defined.

[0033] The part to be tested is a cylindrical part, which can be a cylindrical part or a polygonal cylindrical part that can rotate. The end face to be tested is an end face of the part to be tested along the axis direction, and the verticality between the end face to be tested and the axis direction needs to be tested. Most of the existing testing equipment is a three-coordinate measuring machine, a visual testing equipment or a coaxiality tester, but the above equipment is relatively expensive and has low testing efficiency.

[0034] In view of the above problems, an embodiment of the present disclosure provides a detection device, which can reduce the overall cost of the detection equipment, while improving the detection efficiency and being easy to operate.

[0035] Figure 1 The figure shows the overall structure of the detection device in the embodiment of the present disclosure. Figure 1 In the example, the detection device includes a carrier plate 10, a first carrier 20 and a second carrier 30. For example, the test piece 100 is a cylindrical external threaded oil pipe joint. In another embodiment, the test piece 100 is a round or polygonal cylinder with a smooth surface.

[0036] The first carrier 20 is disposed on the carrier plate 10 to form a slot 201 for rotatably clamping the device under test 100 ; a side end of the slot 201 allows the end surface of the device under test 100 to be exposed.

[0037] The second carrier 30 is provided on the carrier plate 10, and forms a mounting portion corresponding to the side end of the slot 201, and the mounting portion is used to load a detection member 40 having a detection end 41, and the detection end 41 is configured to deviate from the axial direction of the object to be detected 100 but extend parallel to the axial direction and abut against the end face to be detected; the detection member 40 forms a detection signal of a corresponding signal value based on the distance between the detection end 41 and the object to be detected;

[0038] When the test piece 100 is rotated, the detection end 41 passes through and detects various areas on the test end surface along the corresponding rotation path, so as to judge the perpendicularity between the test end surface and the axis direction based on the signal value change of the detection signal. The present application can reduce the cost of the existing equipment for detecting the perpendicularity of the end surface 41 through the above-mentioned setting, and can also speed up the detection efficiency of the perpendicularity of the end surface 41.

[0039] Exemplarily, the end of the detection end 41 is arranged so that the union of the regions detected along the rotation path can cover the entire end face. In other words, the end face size of the detection end 41 varies with the surface size of the detection end 41, so that the end face of the detection end 41 can contact each region of the end face to be detected when the object to be detected 100 rotates one circle, thereby improving the accuracy of detection.

[0040] Exemplarily, the detection member 40 is implemented as a dial indicator. It can be understood by those skilled in the art that the change in the distance between the measuring head of the dial indicator and the object to be detected is amplified by gear transmission, and the lever gear transmission is used to convert the linear displacement of the measuring rod where the measuring head is located into the angular displacement of the pointer, thereby achieving accurate measurement. Therefore, the amount of change in the angle of the pointer is the detection signal. The detection personnel can judge the verticality between the end face to be measured and the axial direction based on the detection signal. If the amount of change in the angle of the pointer exceeds a preset value, it is judged that the verticality between the end face to be measured and the axial direction is unqualified, otherwise it is qualified. In another embodiment, the detection member 40 can also be implemented as a displacement sensor.

[0041] Figure 2 FIG. 1 is a schematic diagram showing the structure of the first bearing member 20 and the pressing member 50 in the embodiment of the present disclosure. Figure 1 and Figure 2 In the example, the width of the slot 201 is implemented to gradually decrease from the opening 20101 located on the side wall of the first carrier 20 to the inside along the direction perpendicular to the axis. Preferably, the slot 201 gradually decreases from the top wall of the first carrier 20 to the inside. Alternatively, the slot 201 is implemented as a V-shaped groove with the opening 20101 facing upward. In another embodiment, the slot 201 can also be implemented to be formed along other side walls, but is not limited thereto.

[0042] The detection device further includes a pressing member 50, one end of which is detachably disposed on the carrier 10, and the other end of which covers the opening 20101 and is close to the first carrier 20. Exemplarily, the pressing member 50 is elastic. When the test piece 100 is located in the slot 201, the pressing member 50 is tightly attached to the outer edge of the test piece 100, and the pressing member 50 undergoes elastic deformation, and the elastic force generated by the pressing member 50 makes the test piece 100 closely attached to the inner wall of the slot 201, so as to avoid inaccurate detection results caused by displacement of the test piece 100 except in the axial direction.

[0043] Those skilled in the art can understand that, after the test piece 100 is located in the slot 201, the pressing member 50 is tilted at one end close to the outer edge of the test piece 100, and cooperates with the side wall of the V-shaped slot 201 to form a limiting space that limits the displacement of the test piece 100 in a direction perpendicular to the axis direction. Secondly, the elastic pressing member 50 improves the limiting effect of the pressing member 50 on the test piece 100, and at the same time, the test pieces 100 with different outer diameters can be limited by changing the tilted height of one end of the pressing member 50, so that the detection device can detect the test pieces 100 with different outer diameters.

[0044] Exemplarily, the hardness of the first carrier 20 is greater than the hardness of the test piece 100, so as to avoid the first carrier 20 from being sunken due to long-term friction with the test piece 100, which may cause the test piece 100 to shift after being subsequently set in the slot 201, and ultimately lead to inaccurate detection results. In another embodiment, the first carrier 20 may also be implemented with a surface hardness that is in contact with the test piece 100 greater than the hardness of the test piece 100, for example, a layer of alloy plating is deposited on the wall surface forming the slot 201, thereby reducing the manufacturing cost of the detection device.

[0045] In another embodiment, the pressing member 50 is also implemented as: one end is detachably provided on the first carrier 20, and the other end covers the opening 20101 and is close to the first carrier 20, so as to improve the integrity of the detection device. In another embodiment, the pressing member 50 can also be implemented as being arranged on the carrier 10 with adjustable height, so that the detection device can detect the test pieces 100 with different outer diameters.

[0046] exist Figure 2 In the example, the end of the pressing member 50 facing the detection end 41 forms an observation port 501. Exemplarily, the observation port 501 is implemented as a region of the pressing member 50 located above the abutment between the detection end 41 and the end surface to be detected, so that the detection personnel can observe whether the detection end 41 abuts against the end surface to be detected.

[0047] Back to Figure 1 In the example, the detection device further includes a third bearing member 60 disposed on the carrier plate 10. For example, the third bearing member 60 is detachably disposed on the carrier plate 10, for example, by bolt connection. The pressing member 50 is detachably disposed on the third bearing member 60. For example, the pressing member 50 is connected to the third bearing member 60 by bolt connection. In another embodiment, the third bearing member 60 is disposed on the carrier plate 10 and the pressing member 50 is connected to the third bearing member 60 by other methods, for example, by snap connection.

[0048] Figure 3 FIG. 2 is a schematic diagram showing the overall structure of another embodiment of the first carrier 20 in the present disclosure. Figure 3 In the example, the first bearing member 20 forms a through hole 2001 extending along the axial direction, and one side end of the through hole 2001 is used to expose the end face of the test piece 100 to be tested. The first bearing member 20 forms a sliding groove 2002 extending along the axial direction perpendicular to the through hole 2001 and penetrating the first bearing member 20, and an adjustment plate 211 is slidably engaged in the sliding groove 2002, and a plurality of adjustment holes 21101 are formed on the adjustment plate 211 and are distributed at intervals along the axial direction of the through hole 2001, and the apertures of the plurality of adjustment holes 21101 increase or decrease along their arrangement direction.

[0049] For example, the top wall of the adjustment plate 211 is formed with a plurality of fixing grooves 21102 spaced apart along the axial direction of the through hole 2001 and corresponding to the center position of the plurality of adjustment holes 2001, and the top wall of the first bearing member 20 is formed with a sliding hole 2003 extending axially perpendicular to the through hole 2001 to communicate with the sliding groove 2002, and the sliding hole 2001 is slidably engaged with an adjustment column 212 whose bottom can be engaged with the adjustment hole 21101. It can be understood by those skilled in the art that according to Figure 3 In the implementation of the example, the test piece 100 with different outer diameters can be tested without the pressing piece, thereby further improving the integrity of the testing device.

[0050] Figure 4 The figure shows a schematic cross-sectional view of the whole detection device in the embodiment of the present disclosure. Figure 4 In the example, the first bearing member 20 and the second bearing member 30 are arranged on the carrier 10 with an adjustable spacing in the axial direction. Exemplarily, the top wall of the carrier 10 is formed with a first adjustment groove 101 extending along the axial direction and penetrating from top to bottom, the bottom wall of the first bearing member 20 is formed with a first threaded hole 202 in the vertical direction, and the bottom wall of the second bearing member 30 is formed with a second threaded hole 302 in the vertical direction. After the spacing between the first bearing member 20 and the second bearing member 30 is adapted to the spacing of the size of the test piece 100, the first bearing member 20 and the second bearing member 30 are respectively fixed to the carrier 10 by passing the first adjustment groove 101 from below and screwing on the first bearing member 20 and the second bearing member 30. That is to say, by adjusting the spacing between the first bearing member 20 and the second bearing member 30 in the axial direction, the test pieces 100 of different lengths can be tested, thereby improving the applicability of the detection device.

[0051] Back to Figure 1 In the example, the top wall of the carrier plate 10 forms a guide groove 102 extending along the axial direction, and the bottoms of the first carrier 20 and the second carrier 30 are slidably coupled to the guide groove 102. This prevents the test piece 100 on the first carrier 20 from failing to smoothly abut against the detection end 41 on the second carrier 30, or prevents the detection end 41 on the second carrier 30 from deviating from the axial direction but not being parallel to the axial direction of the test piece 100, which ultimately results in failure to complete the test or inaccurate test results.

[0052] In another embodiment, the adjustable spacing between the first carrier 20 and the second carrier 30 may also be implemented as follows: a slide groove extending along the axial direction is formed on the top wall of the carrier plate 10, and the first carrier 20 and the second carrier 30 are respectively slidably coupled to the slide groove along the axial direction, and the carrier plate 10 is rotated with at least one screw rod parallel to the axial direction, and the screw rod cooperates with one of the threads in the first carrier 20 and the second carrier 30, so that the spacing between the first carrier 20 and the second carrier 30 in the axial direction can be adjusted by rotating the screw rod.

[0053] exist Figure 4 In the example, the bottom wall of the carrier plate 10 is formed with a sinking avoidance groove 103 extending along the axial direction and having a length and width greater than the first adjustment groove 101. For example, the depth of the sinking avoidance groove 103 is greater than the length of the head end of the fixing bolt. After the fixing bolts are tightened by the first bearing member 20 and the second bearing member 30, the sinking avoidance groove 103 can hide the fixing bolts, so that the carrier plate 10 can be placed stably, thereby facilitating subsequent inspection.

[0054] Figure 5 FIG. 3 is a cross-sectional view of the second carrier 30 in the embodiment of the present disclosure. Figure 1 and Figure 5 As can be seen from the example, the mounting portion is implemented as a fixing hole 301, and the fixing hole 301 is formed along the axis through the second bearing member 30, and the top wall of the second bearing member 30 is formed with a second adjustment groove 303 that is connected to the fixing hole 301 and passes through the axis, and the side wall of the second bearing member 30 perpendicular to the axis is formed with a third threaded hole 304 that passes through the second adjustment groove 303, and an adjustment bolt (not shown in the figure) is threaded in the third threaded hole 304. Exemplarily, the second adjustment groove 303 is adapted to the height of the clamping slot, so that the detection end 41 can deviate from the axial direction of the test piece, but abut against the test end face extending in a direction parallel to the axial direction.

[0055] It is understood by those skilled in the art that when the adjusting bolt is tightened, the spacing of the second adjusting slot 303 is reduced. At this time, since the second adjusting slot 303 is connected to the fixing hole 301, the aperture of the fixing hole 301 is reduced as the spacing of the second adjusting slot 303 is reduced, so that the inner wall of the fixing hole 301 gradually clamps the detection member 100, and finally the relative fixation of the detection member 100 and the second bearing member 30 is achieved. On the contrary, when the adjusting bolt is loosened, the aperture of the fixing hole 301 is reduced as the spacing of the second adjusting slot 303 is reduced. Through the above arrangement, it is convenient for the detection personnel to replace and repair the detection member, and the abutment between the detection end 41 and the detection end surface can be fine-tuned. Exemplarily, a soft pad (not shown in the figure) is provided on the inner wall of the fixing hole 301 to prevent the inner wall of the fixing hole 301 from causing extrusion damage to the detection member 40 when the spacing of the second adjusting slot 303 is reduced.

[0056] In summary, the present invention provides a detection device in an embodiment, including a carrier, a first carrier and a second carrier. The first carrier is arranged on the carrier to form a slot for allowing the test piece to be rotatably mounted; one side end of the slot allows the end face of the test piece to be exposed. The second carrier is arranged on the carrier to form a mounting portion corresponding to the side end of the slot, and the mounting portion is used to load a detection piece with a detection end, and the detection end is configured to deviate from the axial direction of the test piece but extend parallel to the axial direction to abut against the end face to be tested; the detection piece forms a detection signal of a corresponding signal value based on the distance between the detection end and the object to be tested. Wherein, when the test piece is rotated, the detection end passes through and detects each area on the test end face along the corresponding rotation path, so as to judge the verticality between the test end face and the axial direction based on the change of the signal value of the detection signal. Through the above-mentioned setting, the present application can reduce the cost of the existing equipment for detecting the verticality of the end face, and can also speed up the detection efficiency of the verticality of the end face.

[0057] The above embodiments are merely illustrative of the principles and effects of the present disclosure, and are not intended to limit the present disclosure. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present disclosure. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present disclosure shall still be covered by the protection scope of the present disclosure.

Claims

1. A detection device, characterized in that: Used to detect an end face of a test piece along an axial direction, the detection device comprises: Carrier board; A first carrier is disposed on the carrier plate, forming a slot for rotatably clamping the test piece; a side end of the slot allows the end face of the test piece to be exposed; A second carrier is provided on the carrier plate, forming a mounting portion corresponding to the side end of the card slot, the mounting portion is used to load a detection member having a detection end, the detection end is configured to deviate from the axial direction of the object to be detected but extend parallel to the axial direction and abut against the end surface to be detected; the detection member forms a detection signal of a corresponding signal value based on the distance between the detection end and the object to be detected; When the test piece is rotated, the detection end passes along the corresponding rotation path and detects various areas on the test end surface, so as to determine the perpendicularity between the test end surface and the axial direction based on the change in the signal value of the detection signal.

2. The detection device according to claim 1, characterized in that: The end of the detection end is arranged so that the union of the areas detected along the rotation path can cover the entire end surface.

3. The detection device according to claim 1, characterized in that: The width of the card slot is implemented to gradually decrease from the opening located on the side wall of the first carrier to the inside along a direction perpendicular to the axis; the detection device also includes a pressing member, one end of which is detachably provided on the carrier plate, and the other end covers the opening and is close to the first carrier.

4. The detection device according to claim 3, characterized in that: The detection device further comprises a third bearing member arranged on the carrier plate, and the pressing member is detachably arranged on the third bearing member; and / or the pressing member is elastic.

5. The detection device according to claim 1, characterized in that: The first bearing member and the second bearing member are arranged on the carrier plate with an adjustable distance between them in the axial direction.

6. The detection device according to claim 5, characterized in that: The top wall of the carrier plate forms a first adjustment groove that runs through the top and bottom along the axial direction, the bottom wall of the first bearing member forms a first threaded hole along the vertical direction, the bottom wall of the second bearing member forms a second threaded hole along the vertical direction, and the first bearing member and the second bearing member are fixed to the carrier plate by fixing bolts.

7. The detection device according to claim 1, characterized in that: The top wall of the carrier plate forms a guide groove extending along the axial direction, and the bottoms of the first carrier and the second carrier are slidably coupled to the guide groove.

8. The detection device according to claim 1, characterized in that: The mounting portion is implemented as a fixing hole, which is formed on the second supporting member along the axis and passes through the second supporting member. A second adjustment groove that is connected to the fixing hole and passes through the axis is formed on the top wall of the second supporting member. A third threaded hole that passes through the second adjustment groove is formed on the side wall of the second supporting member perpendicular to the axis, and an adjustment bolt is screwed into the third threaded hole.

9. The detection device according to claim 3, characterized in that: An observation port is formed at one end of the pressing member facing the detection end, so as to facilitate observation of whether the detection end abuts against the end surface to be detected.

10. The detection device according to claim 1, characterized in that: The hardness of the first bearing member is greater than the hardness of the test piece.

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