Rotating shaft detection device

Abstract

The utility model discloses a rotating shaft detection device, comprising a detection bench, the detection bench is provided with a detection groove and a detection hole, the detection groove extends along a first direction, the detection groove comprises a first groove segment and a second groove segment which are communicated, the first groove segment and the second groove segment respectively have a preset length, and the first groove segment and the second groove segment respectively have a preset length. The depth of the first groove section is smaller than that of the second groove section, and a first step surface is formed at the junction of the first groove section and the second groove section; the detection hole is formed in the detection groove, a preset distance is formed between the detection hole and the first step surface, the rotating shaft detection device is simple in detection principle and convenient to operate, the detection efficiency can be improved, and compared with direct visual inspection, the detection result is more reliable.

Description

Technical Field

[0001] The utility model relates to a rotating shaft detection device. Background Art

[0002] In the prior art, two parts that are rotatably connected are generally connected through a rotating shaft. In order to ensure the normal connection between the parts and the normal use of the parts after connection, high requirements are placed on the processing accuracy of the rotating shaft, and the completed rotating shaft needs to be strictly inspected. In order to facilitate the fixing of other components, some rotating shafts will be provided with a mounting surface on the side by cutting or casting. At the same time, the rotating shaft will usually be provided with some protrusions or mounting holes on the outside to facilitate installation and fixation with other components. In this way, the shape of the rotating shaft becomes complicated and irregular, which increases the difficulty of production and also increases the difficulty of detecting the rotating shaft.

[0003] At present, after the shaft is produced, it is mostly inspected by a three-coordinate measuring machine or a ruler. However, the inspection of indicators such as the shape of the shaft, the shape of the protrusion and the mounting hole, and the relative position relationship between the mounting surface and the protrusion is difficult, time-consuming, and inefficient. In addition, a single inspection can only measure one or a few indicators, which also leads to the problem of low inspection efficiency. Utility Model Content

[0004] The utility model aims to provide a new rotating shaft detection device.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a rotating shaft detection device, including a detection platform, on which is provided:

[0006] A detection groove, the detection groove extends along a first direction, the detection groove comprises a first groove section and a second groove section that are connected, the first groove section and the second groove section respectively have a preset length, the depth of the first groove section is less than the depth of the second groove section, and a first step surface is formed at the junction of the first groove section and the second groove section;

[0007] A detection hole is arranged in the detection groove, and a preset distance is provided between the detection hole and the first step surface.

[0008] In some embodiments, one end of the detection slot is provided with a limiting hole extending along the first direction and communicating with the detection slot.

[0009] Preferably, a projection of the limiting hole along the first direction is located within a projection of the detection slot along the first direction.

[0010] In some embodiments, the rotating shaft detection device includes a limiting member, the limiting member is detachably arranged on the detection platform, the limiting hole is arranged on the limiting member, and / or the limiting hole is a preset polygonal hole.

[0011] In some embodiments, along the first direction, a mounting groove is provided on one side of the detection platform, the notch of the mounting groove faces away from the detection platform, one end of the mounting groove is connected to one end of the detection groove, and the limiting member is detachably inserted in the mounting groove.

[0012] Preferably, the mounting groove extends along a second direction, the second direction is perpendicular to the first direction, and / or an acute angle is formed between the second direction and a thickness extension direction of the detection platform.

[0013] Preferably, a positioning member is provided on the limit member, and the positioning member and the limit hole are arranged at different ends of the length direction of the limit member, and the extension direction of the positioning member is perpendicular to the length extension direction of the limit member. A positioning groove is provided on the detection platform, and when the limit member is fixed on the detection platform, the positioning member is inserted into the positioning groove.

[0014] In some embodiments, the bottom of the first slot section is a plane extending along the first direction, and / or the detection hole is arranged at the bottom of the first slot section.

[0015] In some embodiments, the detection holes are multiple and spaced apart, and there is a preset distance between adjacent detection holes.

[0016] In some embodiments, the inspection table is provided with an inspection station for inspecting the rotating shaft.

[0017] The rotating shaft comprises a rotating shaft body and a mounting surface extending axially along the rotating shaft body, wherein the mounting surface is recessed inwardly relative to the outer peripheral portion of the rotating shaft body, and a second step surface is formed at the junction of the mounting surface and the outer side surface of the rotating shaft body in the axial direction of the rotating shaft.

[0018] When the rotating shaft is in the detection position, the rotating shaft body is clamped in the detection groove, the mounting surface is in contact with the groove wall of the first groove section, and / or the outer side surface of the rotating shaft body is in contact with the groove wall of the second groove section, and / or the first step surface is in contact with the second step surface.

[0019] In some embodiments, the outer peripheral portion of the shaft body is provided with a protrusion protruding outward, and when the shaft is in the detection position, the protrusion is inserted into the detection hole.

[0020] And / or, a mounting hole is provided on the outer peripheral portion of the rotating shaft body, and when the rotating shaft is in the detection position, the detection hole is communicated with the mounting hole.

[0021] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: the shaft detection device of the utility model, by setting a detection groove, can clamp the shaft in the detection groove for detection, which is convenient for maintaining the stability of the shaft, thereby facilitating the execution of the detection operation and thereby improving the detection speed.

[0022] The detection groove can quickly detect the straightness, shape, flatness and other indicators of the rotating shaft, and the installation surface on the rotating shaft can be detected by setting the first groove section. The detection hole set in the detection groove can detect the shape, position and other indicators of the protrusion on the rotating shaft and the installation hole. When the rotating shaft is detected, the rotating shaft fits tightly with the groove wall of the detection groove, the protrusion is correspondingly inserted in the detection hole, and the installation hole and the detection hole are connected to each other. If any of the above is not met, it means that the rotating shaft does not meet the requirements. The detection principle is simple and the operation is convenient. It can not only improve the detection efficiency, but also make the detection result more reliable compared with direct naked eye observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 It is a three-dimensional structural schematic diagram of a rotating shaft of a specific embodiment of the utility model;

[0024] Attached Figure 2 is a schematic diagram of the three-dimensional structure of the shaft detection device of this embodiment;

[0025] Attached Figure 3 For attachment Figure 2 A schematic structural diagram of the shaft detection device at another angle;

[0026] Attached Figure 4 is an exploded schematic diagram of the shaft detection device of this embodiment;

[0027] Attached Figure 5 is a schematic diagram of the three-dimensional structure of the limiting member of this embodiment;

[0028] Attached Figure 6 It is a schematic diagram of the first step of the shaft detection process;

[0029] Attached Figure 7 It is a schematic diagram of the second step of the shaft detection process;

[0030] Attached Figure 8 This is a schematic diagram of the state when the shaft is tested to be qualified;

[0031] Wherein: 100, shaft; 101, shaft body; 102, mounting surface; 103, second step surface; 104, protrusion; 105, mounting hole; 106, mounting end; 200, detection station;

[0032] 1. Inspection table; 2. Inspection slot; 21. First slot section; 22. Second slot section; 23. Second step surface; 24. Opening; 3. Inspection hole; 31. First inspection hole; 32. Second inspection hole; 4. Limiting member; 41. Limiting hole; 42. Positioning member; 5. Mounting slot; 6. Positioning slot. DETAILED DESCRIPTION

[0033] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, so that the advantages and features of the utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only part of the embodiments of the application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0034] Figure 1 The shaft 100 to be tested in one embodiment of the utility model is shown, which includes a shaft body 101 and a mounting surface 102 for mounting and fixing with other components. The mounting surface 102 extends along the axial direction of the shaft body 101, and the mounting surface 102 is concave inward relative to the outer peripheral portion of the shaft body 101. Along the axial direction of the shaft 100, a second step surface 103 is formed at the junction of the mounting surface 102 and the outer side surface of the shaft body 101.

[0035] See also Figure 1 As shown, in this embodiment, the outer peripheral portion of the rotating shaft body 101 is provided with a protrusion 104 protruding outward, and the protrusion 104 can play a positioning role when it is installed and fixed with other components. In this embodiment, the outer peripheral portion of the rotating shaft body 101 is also provided with a mounting hole 105, and the fixed connection with other components is achieved through the mounting hole 105. Specifically, the mounting hole 105 can be a screw hole, and the connection is achieved by the cooperation between the screw and the screw hole. The mounting hole 105 can also be fixedly connected by other forms such as interference fit. In other embodiments, the outer peripheral portion of the rotating shaft body 101 is only provided with one of the protrusion 104 and the mounting hole 105.

[0036] See also Figures 2 to 4A shaft detection device is shown, which is used to detect the shaft, so as to screen out unqualified shafts. The shaft detection device includes a detection platform 1, on which a detection slot 2 and a detection hole 3 are provided. The detection slot 2 extends along a first direction, and the detection slot 2 includes a first slot section 21 and a second slot section 22 that are connected. The first slot section 21 and the second slot section 22 have a preset length respectively, and the depth of the first slot section 21 is less than the depth of the second slot section 22. A first step surface 23 is formed at the junction of the first slot section 21 and the second slot section 22. The detection hole 3 is arranged in the detection slot 2, and there is a preset distance between the detection hole 3 and the first step surface 23.

[0037] By setting the detection groove 2, when the rotating shaft 100 is detected, the rotating shaft 100 can be clamped in the detection groove 2, which is convenient for maintaining the stability of the rotating shaft 100, thereby facilitating the detection operation and improving the detection speed. At the same time, the detection groove 2 is used to quickly detect the straightness, shape and flatness of the outer surface of the rotating shaft 100, and the first groove section 21 is set to detect the position, shape and flatness of the mounting surface 102. The shape and position of the protrusion 104 on the rotating shaft 100 can be detected by the detection hole 3 set in the detection groove 2, and the position and shape of the mounting hole 105 on the rotating shaft 100 can also be detected by the detection hole 3.

[0038] Specifically, the inspection station 200 for inspecting the rotating shaft 100 is provided on the inspection table 1, and the inspection slot 2 is located at the inspection station 200. When the rotating shaft 100 is at the inspection station 200, if any of the following items is not satisfied: the rotating shaft body 101 is in contact with the slot wall of the inspection slot 2, the protrusion 104 is correspondingly inserted in the inspection hole 3, and the mounting hole 105 is connected with the inspection hole 3, the rotating shaft 100 can be determined to be unqualified.

[0039] In this embodiment, the detection slot 2 includes a first slot section 21 and a second slot section 22, and only one mounting surface 102 is provided on the rotating shaft 100. In other embodiments, the number of the first slot sections 21 and the second slot sections 22 can be adjusted according to the number of the mounting surfaces 102, and the shapes of the first slot sections 21 and the second slot sections 22 can be adjusted according to the shape of the rotating shaft body 101.

[0040] In this embodiment, the mounting surface 102 is a plane extending along the axial direction of the rotating shaft 100, so that the fixing between the rotating shaft 100 and other components can be more stable. If the rotating shaft 100 meets the requirements, when it is in the detection station 200, the mounting surface 102 can fit with the bottom of the first groove section 21, so the bottom of the first groove section 21 in this embodiment is also a plane extending along the first direction.

[0041] In this embodiment, see Figure 1As shown, the protrusion 104 and the mounting hole 105 are both arranged on the mounting surface 102, and respectively realize the positioning and fixing functions, see Figures 2 to 4 As shown, the detection hole 3 is arranged at the bottom of the first groove section 21, and the detection holes 3 are arranged at intervals, and there is a preset spacing between adjacent detection holes 3. Specifically, the detection hole 3 includes a first detection hole 31 and a second detection hole 32, wherein the first detection hole 31 is used to detect the protrusion 104 on the shaft body 101, and the second detection hole 32 is used to detect the mounting hole 105 on the shaft body 101. The first detection hole 31 and the second detection hole 32 both have a preset shape, which is used to detect the shape of the protrusion 104 and the mounting hole 105, and there is a preset relative position relationship between the first detection hole 31 and the second detection hole 32, which is used to detect the relative position relationship between the protrusion 104 and the mounting hole 105. If the shaft 100 meets the requirements, when it is in the detection station 200, the protrusion 104 can be correspondingly inserted in the first detection hole 31, and the mounting hole 105 can be connected with the second detection hole 32.

[0042] In this embodiment, two protrusions 104 and four mounting holes 105 are provided on the rotating shaft 100. The two protrusions 104 are provided at intervals along the axial direction. Two mounting holes 105 are provided on both sides of each protrusion 104 along the axial direction of the rotating shaft 100. Correspondingly, six detection holes 3 are provided in the detection slot 2, including two first detection holes 31 and four second detection holes 32. The two first detection holes 31 are provided at intervals along the first direction. Two second detection holes 32 are provided on both sides of each first detection hole 31 along the first direction.

[0043] In this embodiment, when the rotating shaft 100 is in the detection station 200, if the rotating shaft 100 meets the requirements, the first step surface 23 and the second step surface 103 abut against each other. Specifically, the first step surface 23 has a first abutting surface whose extension direction is perpendicular to the first direction, and the second step surface 103 has a second abutting surface whose extension direction is perpendicular to the axial direction of the rotating shaft 100. When the rotating shaft 100 is in the detection station 200, if the rotating shaft 100 meets the requirements, the first abutting surface and the second abutting surface abut against each other.

[0044] See also Figure 1 As shown, in this embodiment, along the axial direction of the rotating shaft 100, the mounting surface 102 and the outer side surface of the rotating shaft body 101 have two intersections, and a second step surface 103 is formed at each of the two intersections. The two second step surfaces 103 are respectively arranged at different ends of the mounting surface 102 in the length direction. Figure 2As shown, the detection platform 1 is provided with an opening 24, and the opening 24 is connected to the detection slot 2 and the outside of the detection platform 1. Specifically, the opening 24 is connected to the first slot section 21 and the outside of the detection platform 1. When the rotating shaft 100 is in the detection station 200, if the rotating shaft 100 meets the requirements, one of the second step surfaces 103 is clamped at the opening 24, and the other second step surface 103 is against the first step surface 23. In this way, the length of the mounting surface 102 can be measured. At the same time, the opening 24 and the first step surface 23 can provide positioning for the rotating shaft body 101, so that the rotating shaft body 101 is accurately clamped in the detection slot 2, and when the two second step surfaces 103 are respectively matched with the opening 24 and the first step surface 23, the displacement of the rotating shaft 100 in the axial direction can be limited, which is convenient for the execution of the detection operation.

[0045] In this embodiment, the rotating shaft 100 further includes a mounting end 106 fixedly mounted at one end of the rotating shaft body 101, and a limiting hole 41 is provided at one end of the detection slot 2, the limiting hole 41 extends along the first direction and communicates with the detection slot 2, and the limiting hole 41 can be used to detect whether the mounting end 106 is qualified. Specifically, the projection of the limiting hole 41 along the first direction is located within the projection of the detection slot 2 along the first direction, and the limiting hole 41 is a preset shape, which is used to detect the cross-sectional shape of the mounting end 106 and the relative position relationship between the mounting end 106 and the rotating shaft body 101.

[0046] In this embodiment, the limiting hole 41 is a preset polygonal hole, and the cross section of the mounting end 106 along the direction perpendicular to the axial direction is a polygon. Specifically, the limiting hole 41 is a rounded rectangular hole, and the cross section of the mounting end 106 is also a rounded rectangular hole.

[0047] In this embodiment, the shaft detection device is further provided with a limiting mechanism for limiting the axial and radial displacement of the shaft 100. Specifically, the limiting mechanism includes the above-mentioned limiting hole 41. Since the shape of the limiting hole 41 matches the cross section of the mounting end 106, the rotation of the mounting end 106 can be limited by inserting the mounting end 106 into the limiting hole 41. Figure 1 As shown, the cross-section of the mounting end 106 is smaller than the cross-section of the shaft body 101 , and a limiting surface is formed at the junction of the mounting end 106 and the shaft body 101 , and the limiting surface cooperates with the edge of the limiting hole 41 to prevent the shaft body 101 from moving toward the limiting hole 41 .

[0048] In this embodiment, the rotation shaft detection device includes a limit member 4, which is detachably arranged on the detection platform 1, and a limit hole 41 is arranged on the limit member 4. In this way, on the one hand, the originally complex rotation shaft detection device is divided into two relatively simple parts, which is convenient for the production and manufacture of the rotation shaft detection device; on the other hand, the limit member 4 is detachably arranged, so that the limit member 4 can be replaced. Specifically, different types of limit members 4 can be arranged, and different types of limit holes 41 are arranged on different limit members 4, so that they can be adapted to different types of installation ends 106. By installing the above different types on the detection platform 1, different types of rotation shafts 100 can be detected, thereby improving the utilization rate of the rotation shaft detection device and saving resources.

[0049] In this embodiment, a mounting groove 5 is provided on one side of the detection platform 1 in the first direction, and the limiting member 4 is detachably inserted into the mounting groove 5. Specifically, the notch of the mounting groove 5 faces the direction away from the detection platform 1, and one end of the mounting groove 5 is connected with one end of the detection groove 2. With such a configuration, when installing the limiting member 4, it is only necessary to insert the limiting member 4 into the mounting groove 5 from one side of the detection platform 1 in the direction close to the detection platform 1, and the operation is simple. If the limiting member 4 needs to be replaced, it is only necessary to drive the limiting member 4 to move in the direction away from the detection platform 1, so that the limiting member 4 can be detached from the detection platform 1.

[0050] In this embodiment, see Figure 6 As shown, the mounting groove 5 extends along the second direction, and the second direction is perpendicular to the first direction, which is convenient for the installation and fixation of the stopper 4. Since in this embodiment, the symmetric plane of the mounting end 106 and the mounting surface 102 form an acute angle, therefore, in this embodiment, the second direction and the thickness extension direction of the test platform 1 have an acute angle. Figure 5 As shown, the main body of the limiting member 4 and the limiting hole 41 thereon have the same symmetric plane, which facilitates the production of the limiting member 4.

[0051] In this embodiment, a positioning structure is provided between the stopper 4 and the testing platform 1 to achieve accurate positioning between the two. The positioning structure includes a positioning member 42 provided on the stopper 4 and a positioning groove 6 provided on the testing platform 1. When the stopper 4 is fixed on the testing platform 1, the positioning member 42 is inserted into the positioning groove 6. Figure 5 As shown, the positioning member 42 and the limiting hole 41 are respectively arranged at two different ends of the length direction of the limiting member 4, and the extending direction of the positioning member 42 is perpendicular to the length extending direction of the limiting member 4. Figure 6 As shown, the positioning groove 6 is arranged at the bottom of the installation groove 5. In the process of driving the limiting member 4 to be inserted into the installation groove 5, the positioning member 42 is also driven to be inserted into the positioning groove 6, so that the installation and positioning are realized synchronously.

[0052] When the shaft detection device is used to detect the shaft, there are several detection methods as follows:

[0053] Method 1: See Figure 6 As shown, the stopper 4 is detached from the test platform 1, and the shaft 100 is installed in the test slot 2. By adjusting the position of the shaft 100, the protrusion 104 is driven to be inserted into the test hole 3, and the fit between the shaft body 101 and the slot wall of the test slot 2 is detected. If the shaft 100 is provided with a mounting hole 105, the relative position of the mounting hole 105 and the second test hole 32 is detected at the same time. If the shaft body 101 is tightly fitted with the slot wall of the test slot 2, one of the second step surfaces 103 can be stuck at the opening, the other second step surface 103 can be against the first step surface 23, and the mounting hole 105 is connected with the second test hole 32, the above conditions are met, indicating that the setting of the shaft body 101, the mounting surface 102, the protrusion 104 and the mounting hole 105 meet the requirements. If any of the above items is not met, it means that the shaft 100 is unqualified and does not need to be tested in the next step.

[0054] If the above checks are satisfactory, see Figure 7 As shown, the stopper 4 is assembled on the test bench 1 to test whether the stopper 4 can be accurately installed in the installation groove 5. If the stopper 4 can be accurately installed, refer to Figure 8 As shown, it indicates that the setting of the mounting end 106 also meets the requirements, and the shaft 100 can be judged to be qualified. If the stopper 4 cannot be accurately installed, the setting of the surface mounting end 106 does not meet the requirements, and the shaft 100 is unqualified.

[0055] Method 2: First, remove the stopper 4 from the test table 1, install the shaft 100 into the test slot 2, and adjust the position of the shaft 100 to drive the shaft body 101 to fit the slot wall of the test slot 2, and test whether the protrusion 104 can be inserted into the corresponding first test hole 31, and / or test the relative position of the mounting hole 105 and the second test hole 32. If the protrusion 104 can be inserted into the corresponding first test hole 31, one of the second step surfaces 103 can be stuck at the opening, the other second step surface 103 can be against the first step surface 23, and the mounting hole 105 is connected with the second test hole 32, and the above conditions are met, it means that the setting of the shaft body 101, the mounting surface 102, the protrusion 104 and the mounting hole 105 meets the requirements. If any of the above items is not met, it means that the shaft 100 is unqualified and does not need to be tested in the next step.

[0056] If the above inspection meets the requirements, the stopper 4 is assembled on the test bench 1 to test whether the stopper 4 can be accurately installed in the installation slot 5. If the stopper 4 can be accurately installed, it means that the setting of the installation end 106 also meets the requirements, and the shaft 100 can be judged to be qualified. If the stopper 4 cannot be accurately installed, the setting of the surface installation end 106 does not meet the requirements, and the shaft 100 is unqualified.

[0057] Method 3: Install the limit member 4 on the detection table 1, insert the installation end 106 of the shaft 100 into the limit hole 41, adjust the shaft 100, check whether the shaft body 101 fits with the wall of the detection groove 2, whether the protrusion 104 can be inserted into the corresponding first detection hole 31, and whether the installation hole 105 is connected to the second detection hole 32. If all of the above are met, it means that the shaft 100 is qualified. If any one of the requirements is not met, it means that the shaft 100 is unqualified.

[0058] In summary, the shaft detection device of this embodiment has a simple structure. When detecting the shaft 100, the operation is simple. It only needs to drive the shaft body 101 to be clamped in the detection groove 2, and drive the installation end 106 to be inserted in the limit hole 41, and judge the following conditions: whether the installation surface 102 is in contact with the groove wall of the first groove section 21; whether the outer side surface of the shaft body 101 is in contact with the groove wall of the second groove section 22; whether the first step surface 23 is against the second step surface 103; whether the installation end 106 can be accurately inserted in the limit hole 41; whether the protrusion 104 can be accurately inserted in the first detection hole 31; whether the second detection hole 32 can be connected with the installation hole 105. If one of the conditions is satisfied, the shaft 100 can be judged as unqualified. The operation is simple, and the detection result can be obtained by judging without measurement, and the detection result is more reliable.

[0059] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A shaft detection device, characterized in that: The test bench comprises: A detection groove, the detection groove extends along a first direction, the detection groove comprises a first groove section and a second groove section that are connected, the first groove section and the second groove section respectively have a preset length, the depth of the first groove section is less than the depth of the second groove section, and a first step surface is formed at the junction of the first groove section and the second groove section; A detection hole is arranged in the detection groove, and a preset distance is provided between the detection hole and the first step surface.

2. The shaft detection device according to claim 1, characterized in that: One end of the detection slot is provided with a limiting hole extending along the first direction and communicating with the detection slot.

3. The shaft detection device according to claim 2, characterized in that: The projection of the limiting hole along the first direction is located within the projection of the detection slot along the first direction.

4. The shaft detection device according to claim 2, characterized in that: The rotating shaft detection device comprises a limiting member, the limiting member is detachably arranged on the detection platform, the limiting hole is arranged on the limiting member, and / or the limiting hole is a preset polygonal hole.

5. The shaft detection device according to claim 4, characterized in that: Along the first direction, a mounting groove is provided on one side of the detection platform, the notch of the mounting groove faces away from the detection platform, one end of the mounting groove is connected to one end of the detection groove, and the limiting member is detachably inserted in the mounting groove.

6. The rotating shaft detection device according to claim 5, characterized in that: The mounting groove extends along a second direction, the second direction is perpendicular to the first direction, and / or an acute angle is formed between the second direction and a thickness extension direction of the detection platform.

7. The rotating shaft detection device according to claim 4, characterized in that: A positioning piece is provided on the limiting piece, and the positioning piece and the limiting hole are arranged at different ends of the length direction of the limiting piece. The extension direction of the positioning piece and the length extension direction of the limiting piece are perpendicular to each other. A positioning groove is provided on the detection platform, and when the limiting piece is fixed on the detection platform, the positioning piece is inserted into the positioning groove.

8. The rotating shaft detection device according to claim 1, characterized in that: The bottom of the first slot section is a plane extending along the first direction, and / or the detection hole is arranged at the bottom of the first slot section.

9. The rotating shaft detection device according to claim 1, characterized in that: There are a plurality of detection holes arranged at intervals, and there is a preset spacing between adjacent detection holes.

10. The rotating shaft detection device according to any one of claims 1 to 9, characterized in that: The inspection table is provided with an inspection station for inspecting the rotating shaft. The rotating shaft comprises a rotating shaft body and a mounting surface extending axially along the rotating shaft body, wherein the mounting surface is recessed inwardly relative to the outer peripheral portion of the rotating shaft body, and a second step surface is formed at the junction of the mounting surface and the outer side surface of the rotating shaft body in the axial direction of the rotating shaft. When the rotating shaft is in the detection position, the rotating shaft body is clamped in the detection groove, the mounting surface is in contact with the groove wall of the first groove section, and / or the outer side surface of the rotating shaft body is in contact with the groove wall of the second groove section, and / or the first step surface is in contact with the second step surface.

11. The rotating shaft detection device according to claim 10, characterized in that: The outer peripheral portion of the shaft body is provided with a protrusion protruding outward, and when the shaft is in the detection position, the protrusion is inserted into the detection hole. And / or, a mounting hole is provided on the outer peripheral portion of the rotating shaft body, and when the rotating shaft is in the detection position, the detection hole is communicated with the mounting hole.

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