Inspection tool for bearing

Abstract

The utility model provides an inspection tool for a bearing, which belongs to the technical field of washing machine bearing detection and is used for inspecting whether the bearing is crushed and jammed or not and avoiding abnormal sound of the bearing after the whole machine is assembled. The utility model provides an inspection tool used for a bearing. The inspection tool comprises a hand-held part and an inspection head. The inspection head comprises a retaining part and an insertion part. The retaining part is arranged at one end of the handheld part. The inserting part is arranged on the side, away from the handheld part, of the retaining part. The inserting part is used for being inserted into an inner ring of the bearing. The retaining part is used for abutting against the end face of the inner ring of the bearing. The insertion part can be driven to rotate by rotating the handheld part, so that the inner ring of the bearing is driven to rotate, and whether the bearing is jammed or not is detected. The inspection tool for the bearing is convenient to use and simple in structure, can detect slight jamming of the bearing, avoids abnormal sound of the bearing after a whole machine is assembled, and is beneficial to improving production efficiency and guaranteeing product quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of washing machine bearing detection, and in particular relates to an inspection tool for bearings. Background Art

[0002] Washing machines are cleaning appliances that use electrical energy to generate mechanical action to wash clothes. They are divided into two categories according to their rated washing capacity: household and collective. Household washing machines are mainly composed of a cabinet, a washing and dehydrating barrel, a transmission and control system, etc. The transmission system mainly relies on the coordinated transmission of bearings and shafts. During the production and manufacturing process of washing machines and the after-sales maintenance process, staff cannot identify whether the bearings are crushed or have quality problems by naked eyes, so they usually need to rotate the inner ring of the bearing with their fingers to confirm whether the bearing is stuck. However, in the case of slight bearing sticking, when the inner ring of the bearing is rotated with fingers, the problem cannot be detected by human senses, resulting in abnormal bearing noise after the whole machine is assembled. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to provide an inspection tool for bearings, which can inspect whether the bearings are crushed or stuck after pressing the bearings, so as to avoid abnormal noise of the bearings after assembling the whole machine.

[0004] In order to solve the above problems, the utility model provides an inspection tool for bearings, comprising: a handheld part and an inspection head. The inspection head comprises a stopper and a plug-in part. The stopper is arranged at one end of the handheld part. The plug-in part is arranged at a side of the stopper away from the handheld part. The plug-in part is used to be inserted into the inner ring of the bearing. The stopper is used to abut against the inner ring end face of the bearing. By rotating the handheld part, the plug-in part can be driven to rotate, and then the inner ring of the bearing can be driven to rotate, so as to inspect whether the bearing is stuck.

[0005] Optionally, the diameter of the hand-held portion gradually increases from the free end of the hand-held portion toward the stop portion.

[0006] Optionally, an anti-slip structure is provided on the side of the handheld portion.

[0007] Optionally, the hand-holding portion, the stop portion and the plug-in portion are an integrally formed structure.

[0008] Optionally, the hand-holding part, the stopper part and the plug-in part are split structures and can be disassembled.

[0009] Optionally, the hand-held portion and the stop portion are an integrally formed structure, and the plug-in portion is detachably connected to the stop portion.

[0010] Optionally, the inspection tool further includes: at least one spare part of the plug-in part, and the diameter of the spare part of the plug-in part is different from the diameter of the plug-in part.

[0011] Optionally, the hand-holding portion, the stop portion and the plug-in portion are made of metal.

[0012] Optionally, the plug-in portion and the inner ring of the bearing are clearance-fitted, and the length of the plug-in portion is not less than the height of the bearing.

[0013] Optionally, the length of the hand-held portion is L1, and the sum of the lengths of the stopper portion and the plug-in portion is L2. L1>L2.

[0014] Optionally, the inspection tool comprises two inspection heads. The two inspection heads are respectively arranged at two ends of the handheld part. The two inspection heads have different sizes.

[0015] Beneficial Effects

[0016] The inspection tool for bearings provided in the utility model comprises a handheld part, a stopper part and a plug-in part connected in sequence; when in use, the plug-in part is inserted into the inner ring of the bearing until the stopper part abuts against the end face of the inner ring of the bearing; then the handheld part is held, and the stopper part and the plug-in part are driven to rotate rapidly by rotating the handheld part, thereby driving the inner ring of the bearing to rotate. When the inner ring of the bearing is stuck at a certain point, since the plug-in part is inserted into the inner ring of the bearing and contacts the inner ring of the bearing, the friction vibration caused by the stuck inner ring of the bearing can be transmitted to the plug-in part. Since the tool has a certain length, when the vibration of the plug-in part is transmitted to the handheld part, this friction vibration will be amplified, and the inspector can clearly feel the stuck at this point when holding the handheld part. The inspection tool for bearings provided by the utility model is easy to use, simple in structure, can detect slight stuckness of the bearing, avoids abnormal noise of the bearing after assembling the whole machine, and is conducive to improving production efficiency and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of a bearing inspection tool provided by the utility model in accordance with an embodiment;

[0018] Figure 2 A top view of an inspection tool for bearings according to an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of a use state of a bearing inspection tool provided by an embodiment of the utility model;

[0020] Figure 4 A front view of another embodiment of a bearing inspection tool provided by the utility model.

[0021] The reference numerals are as follows:

[0022] 1. Handheld part; 2. Inspection head; 3. Bearing;

[0023] 21. Stopping portion; 22. Inserting portion;

[0024] 31. Inner circle; 32. Outer circle. DETAILED DESCRIPTION

[0025] In the description of the present invention, 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" 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 invention 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 invention.

[0026] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] This embodiment provides an inspection tool for bearings. Figure 1 A front view of an inspection tool for a bearing provided in this embodiment. Figure 2 A top view of an inspection tool for a bearing provided in this embodiment. Figure 3 A schematic diagram of the use status of a bearing inspection tool provided in this embodiment.

[0030] like Figures 1 to 3As shown, the inspection tool for bearings of this embodiment includes: a handheld portion 1 and an inspection head 2. The inspection head 2 includes a stopper 21 and a plug-in portion 22. The stopper 21 is arranged at one end of the handheld portion 1. The plug-in portion 22 is arranged on a side of the stopper 21 away from the handheld portion 1. The plug-in portion 22 is used to be inserted into the inner ring 31 of the bearing 3. The stopper 21 is used to abut against the end face of the inner ring 31 of the bearing 3. By rotating the handheld portion 1, the plug-in portion 22 can be driven to rotate, and then the inner ring 31 of the bearing 3 can be driven to rotate, so as to inspect whether the bearing 3 is stuck.

[0031] For some examples, see Figure 1 and Figure 2 The edge of the end surface of the free end of the hand-held part 1 has a chamfer. This arrangement can prevent the inspector's hand from being scratched by the edge of the end surface of the free end of the hand-held part 1. For example, the chamfer is an oblique angle or a rounded angle, and the size of the chamfer can be set according to actual use requirements, and this embodiment does not impose too many restrictions on this.

[0032] In some examples, such as Figure 3 As shown, the diameter of the stopper 21 is larger than the inner diameter of the inner ring 31 of the bearing 3 and not larger than the outer diameter of the inner ring 31 of the bearing 3. With such a configuration, the stopper 21 can cooperate with the end face of the inner ring 31 of the bearing 3 to play the role of stopper and fixation. At the same time, during the rotation process, it can avoid the end face of the stopper 21 from rubbing against the end face of the outer ring 32 of the bearing 3, which affects the inspection effect.

[0033] For some examples, see Figure 1 and Figure 2 The end face edge of the free end of the plug-in portion 22 has a chamfer. This arrangement facilitates the insertion of the plug-in portion 22 into the inner ring 31 of the bearing 3. For example, the chamfer is an oblique angle or a rounded angle, and the size of the chamfer can be set according to actual use requirements, and this embodiment does not impose too many restrictions on this.

[0034] In some examples, such as Figure 1 and Figure 2 As shown, the hand-held portion 1, the stopper portion 21 and the plug-in portion 22 are coaxially arranged. Such an arrangement can make the inspection tool itself have better stability when rotating, thereby helping to improve the inspector's perception of the bearing 3 being stuck.

[0035] The inspection tool for bearings provided in this embodiment includes a handheld part 1 and an inspection head 2. The inspection head 2 includes a stopper 21 and a plug-in part 22. When in use, the plug-in part 22 is inserted into the inner ring 31 of the bearing 3 until the stopper 21 abuts against the end face of the inner ring 31 of the bearing 3; then the handheld part 1 is held, and the stopper 21 and the plug-in part 22 are driven to rotate rapidly by rotating the handheld part 1, thereby driving the inner ring 31 of the bearing 3 to rotate. When the inner ring 31 of the bearing 3 is stuck at a certain point, since the plug-in part 22 is inserted into the inner ring 31 of the bearing 3 and contacts the inner ring 31 of the bearing 3, the friction vibration caused by the stuck inner ring 31 of the bearing 3 can be transmitted to the plug-in part 22. Since the tool has a certain length, when the vibration of the plug-in part 22 is transmitted to the handheld part 1, this friction vibration will be amplified, and the inspector can clearly feel the stuck at this point when holding the handheld part 1. The inspection tool for bearings of this embodiment is easy to use and has a simple structure. It can detect slight jamming of the bearing 3 and avoid abnormal noise of the bearing 3 after assembling the whole machine, which is beneficial to improving production efficiency and ensuring product quality.

[0036] In addition, when inspecting the bearing 3 by hand, the bearing 3 is not subjected to stress, but some internal damage of the bearing 3 cannot be seen when it is not subjected to stress. When the whole machine is assembled, the bearing 3 is subjected to radial force, and the internal damage problem will be shown. When the inspection tool of this embodiment is inserted into the inner ring 31 of the bearing 3 for inspection, it can simulate the load of the bearing 3, so that the bearing 3 is subjected to radial force, and then it can stimulate the internal fault of the bearing 3, so that the inspector can find the fault in time, and avoid the abnormal sound of the bearing 3 after the whole machine is assembled.

[0037] In some embodiments, Figures 1 to 3 As shown, the diameter of the handle portion 1 gradually increases from the free end of the handle portion 1 toward the stop portion 21 .

[0038] In some examples, such as Figures 1 to 3 As shown, the hand-held portion 1 is in a truncated cone shape. This arrangement is convenient for holding and has low processing difficulty.

[0039] It is understandable that in other embodiments, the hand-held portion 1 may also be in the shape of a prism, such as a hexagonal prism, an octagonal prism, etc. Such a configuration is conducive to increasing the friction force and facilitates the inspection personnel to rotate the inspection tool.

[0040] In this embodiment, the diameter of the free end of the hand-held part 1 is smaller than the diameter of the end of the hand-held part 1 close to the stop portion 21, which is convenient for grasping and rotating. When the plug-in part 22 is driven to rotate by rotating the small-diameter end of the hand-held part 1, the rotation speed of the plug-in part 22 can be increased, which is conducive to detecting the sticking of the bearing 3.

[0041] The damage inside the bearing 3 is unpredictable. Some damage can be felt when the inner ring 31 of the bearing 3 is rotated by hand, while some damage cannot be felt by rotating the inner ring 31 of the bearing 3 by hand and can only be detected at a certain speed. The free end of the handheld part 1 of this embodiment has a small diameter, so the inner ring 31 of the bearing 3 can be driven to rotate faster by rotating the free end of the handheld part 1, thereby increasing the rotation speed of the inner ring 31 of the bearing 3, which is conducive to improving the accuracy of the inspection.

[0042] In some embodiments, see Figure 1 , an anti-slip structure is provided on the side of the handheld part 1.

[0043] For some examples, see Figure 1 The anti-slip structure includes a pattern, which is arranged on the side of the handheld part 1. Such an arrangement can increase the friction between the side of the handheld part 1 and the hand of the inspector, so as to facilitate the rotation of the handheld part 1. For example, the pattern of this embodiment can be set as a concave pattern or a convex pattern, and this embodiment does not make too many restrictions.

[0044] For some examples, see Figure 1 The anti-slip structure includes an anti-slip cover, which is sleeved on the circumference of the handheld part 1. This is to facilitate the inspection personnel to hold and rotate. For example, the anti-slip cover can be made of rubber, plastic or textile, etc., and this embodiment does not make too many restrictions on this.

[0045] In this embodiment, an anti-slip structure is provided on the side of the hand-held portion 1, which not only facilitates grasping but also increases the friction of the surface, thereby achieving an effect of facilitating twisting.

[0046] In some embodiments, Figures 1 to 3 As shown, the hand-held portion 1, the stopper portion 21 and the plug-in portion 22 are an integrally formed structure.

[0047] For some examples, see Figure 1 The hand-held part 1, the stopper part 21 and the plug-in part 3 are an integral structure, which is formed by machining a piece of material. Such a configuration is conducive to reducing the manufacturing process, and at the same time can have a better effect of transmitting friction vibration, and the structural strength is high.

[0048] For other examples, see Figure 1 The hand-held portion 1, the stopper portion 21 and the plug-in portion 22 are processed separately and connected into a whole by welding. This arrangement reduces the difficulty of machining.

[0049] The hand-held portion 1, the stopper portion 21 and the plug-in portion 22 of the present embodiment are an integrally formed structure, which has a better transmission and amplification effect on friction vibration, and at the same time has better structural strength and is durable.

[0050] In some embodiments, Figures 1 to 3 As shown, the hand-held portion 1, the stopper portion 21 and the plug-in portion 22 are split structures and can be disassembled.

[0051] For some examples, see Figure 1 The connection between the hand-held portion 1, the stopper portion 21 and the plug-in portion 22 includes at least one of a bolt connection, a latch connection, a key connection, etc. This arrangement facilitates disassembly and storage.

[0052] For example, see Figure 1 A first bolt is provided on the end surface of the top end of the stopper 21, and a second bolt is provided on the end surface of the bottom end of the stopper 21. A first bolt hole is provided on the end surface of the bottom end of the hand-held portion 1, and the bottom end of the hand-held portion 1 and the top end of the stopper 21 are connected by the first bolt hole and the first bolt. A second bolt hole is provided on the end surface of the top end of the plug-in portion 22, and the top end of the plug-in portion 22 and the bottom end of the stopper 21 are connected by the second bolt and the second bolt hole. Such a configuration is convenient for disassembly and assembly.

[0053] The hand-held portion 1, the stop portion 21 and the plug-in portion 22 of the present embodiment are split structures and can be disassembled, which is convenient for disassembly and assembly. Different structures can be formed through different combinations. For example, the hand-held portion 1 at one end of the stop portion 21 is removed and a plug-in portion 22 is installed. In this way, both ends of the stop portion 21 are plug-in portions 22, which can be used to be plugged into the inner ring 31 of the bearing 3.

[0054] In some embodiments, Figures 1 to 3 As shown, the hand-held portion 1 and the stop portion 21 are an integrally formed structure. The plug-in portion 22 is detachably connected to the stop portion 21 .

[0055] For some examples, see Figure 1 The hand-held part 1 and the stop part 21 are made of a piece of material through machining, and the plug-in part 22 and the stop part 21 are detachably connected, and the connection method includes one of bolt connection, pin connection, and key connection. This arrangement facilitates the replacement of the plug-in part 22.

[0056] The hand-held portion 1 and the stop portion 21 of this embodiment are an integrally formed structure, and the plug-in portion 22 is detachably connected to the stop portion 21, which is beneficial to reducing the number of parts of the inspection tooling and is convenient for replacing the plug-in portions 22 of different specifications for inspecting bearings 3 of different specifications.

[0057] In some embodiments, see Figures 1 to 3 The inspection tool also includes: at least one plug-in spare part, and the diameter of the plug-in spare part is different from the diameter of the plug-in part 22.

[0058] For some examples, see Figure 1The shape of the plug-in part spare part is the same as that of the plug-in part 22, both of which are cylindrical. However, the diameter of the plug-in part spare part is larger or smaller than that of the plug-in part 22. In this way, the plug-in part spare part can be used to detect a bearing 3 of another specification, thereby expanding the scope of application of the inspection tool.

[0059] It is understandable that, in other embodiments, the shape and size of the plug-in portion spare part may be exactly the same as the plug-in portion 22. When the plug-in portion 22 is worn or corroded, and the use is affected, the plug-in portion spare part may be replaced.

[0060] For some examples, see Figure 1 The shape of the plug-in part spare part is different from that of the plug-in part 22. For example, the plug-in part 22 is cylindrical, while the plug-in part spare part is prism-shaped or truncated cone-shaped. In this way, the plug-in part spare part can be used to test the inner ring of a bearing with a special shape.

[0061] It should be noted that, in other embodiments, when the number of the plug-in component spare parts is two or more, at least one of the plug-in component spare parts may be different in size and / or shape from the plug-in component 22 .

[0062] The inspection tool of this embodiment also includes at least one plug-in part spare part, which is used to replace the plug-in part 22, which can extend the scope of application of the inspection tool and can also be used to extend the service life of the inspection tool. In addition, it should be noted that in addition to the plug-in part 22, the hand-held part 1 and the stop part 3 can also have spare parts.

[0063] In some embodiments, Figures 1 to 3 As shown, the hand-held portion 1, the stopper portion 21 and the plug-in portion 22 are made of metal.

[0064] For some examples, see Figure 1 The hand-held part 1, the stopper part 21 and the plug-in part 22 are all made of carbon steel. Carbon steel has high strength, good wear resistance and low material cost.

[0065] It is understandable that in other embodiments, the hand-held portion 1, the stop portion 21 and the plug-in portion 22 may also be made of other metals or alloy materials as long as they can meet the use requirements. This implementation does not impose too many restrictions on this.

[0066] The hand-held part 1, the stopper part 21 and the plug-in part 22 of this embodiment are made of metal material, which has a high-density and high-strength molecular structure, and has a better effect of transmitting vibration. It can amplify the friction vibration energy of the inner ring of the bearing and transmit it to the hand-held part 1, making it easier for inspectors to perceive.

[0067] In some embodiments, see Figure 3The plug-in portion 22 and the inner ring 31 of the bearing 3 are clearance-matched. The length of the plug-in portion 22 is not less than the height of the bearing 3.

[0068] For some examples, see Figure 3 The diameter of the plug-in part 22 is slightly smaller by 3 to 5 μm than the inner ring 31 of the bearing 3. With this arrangement, the plug-in part 22 and the inner ring 31 of the bearing 3 can achieve clearance fit, which is convenient for insertion and can drive the inner ring 31 of the bearing 3 to rotate, making it easy to use.

[0069] The plug-in part 22 of this embodiment and the inner ring 31 of the bearing 3 adopt clearance fit, which is convenient for installation. The length of the plug-in part 22 is not less than the height of the bearing 3, so that the plug-in part 22 can penetrate the inner ring 31 of the bearing 3, and the two are fully in contact, so that the synchronization degree of the inner ring 31 of the bearing 3 and the plug-in part 22 is better, and the plug-in part 22 penetrates the inner ring 31, so that the connection between the inspection tool and the bearing 3 is more stable, and then the inspection tool can be more stable relative to the bearing 3 when rotating, which is conducive to improving the inspection accuracy.

[0070] In some embodiments, Figures 1 to 3 As shown, the length of the hand-held portion 1 is L1. The sum of the lengths of the stopper portion 21 and the plug-in portion 22 is L2. L1>L2.

[0071] The length of the hand-held portion 1 of the present embodiment is greater than the sum of the lengths of the stop portion 21 and the plug-in portion 22. Therefore, when the energy of the vibration of the inner ring 31 of the bearing 3 is transmitted from the bearing 3 to the free end of the hand-held portion 1, the hand-held portion 1 has a sufficient length and can therefore have a better amplification effect, which is helpful for the inspector to perceive the tiny vibrations of the inner ring 31 of the bearing 3.

[0072] In some embodiments, Figure 4 As shown, the inspection tool comprises two inspection heads 2. The two inspection heads 2 are respectively arranged at two ends of the handheld part 1. The two inspection heads 2 have different sizes.

[0073] In some examples, such as Figure 4 As shown, the large-sized inspection head 2 is arranged at the bottom end of the handheld part 1 (i.e., the large-diameter end of the handheld part 1). The small-sized inspection head 2 is arranged at the top end of the handheld part 1 (i.e., the small-diameter section of the handheld part 1). Such an arrangement can make the structure of the inspection tool more reasonable and more convenient to use.

[0074] In some examples, such as Figure 4 As shown, the handheld part 1 and the two inspection heads 2 are an integrally formed structure. Such a configuration can have a better effect of transmitting and amplifying friction vibration, and at the same time has better structural strength and durability.

[0075] In some examples, such as Figure 4As shown, the inspection heads 2 at both ends of the handheld part 1 can be disassembled. Such arrangement is convenient for storage and assembly, and the usage mode can be more flexible.

[0076] For some examples, see Figure 4 The number of the inspection heads 2 is more than two, and the size of each inspection head is different. In this way, the inspection tool can be applied to bearings of various specifications by replacing the inspection heads 2 on the handheld part 1, thereby expanding the application scope of the inspection tool.

[0077] The inspection tool of this embodiment includes two inspection heads 2. The two inspection heads 2 are respectively arranged at the two ends of the handheld part 1. The two inspection heads 2 have different sizes. They can be used to inspect bearings of two different sizes at the same time, which is conducive to improving the inspection efficiency of the bearings.

[0078] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0079] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A bearing inspection tool, characterized in that: include: Handheld part; The inspection head comprises a stopper and an inserting part; the stopper is arranged at one end of the handheld part; the inserting part is arranged at a side of the stopper away from the handheld part; the inserting part is used to be inserted into the inner ring of the bearing; the stopper is used to abut against the inner ring end surface of the bearing; The plug-in portion can be driven to rotate by rotating the hand-held portion, thereby driving the inner ring of the bearing to rotate, so as to check whether the bearing is stuck.

2. The inspection tool for bearings according to claim 1, characterized in that: The diameter of the hand-held part gradually increases from the free end of the hand-held part toward the stop part.

3. The inspection tool for bearings according to claim 1, characterized in that: An anti-slip structure is arranged on the side of the hand-held part.

4. The inspection tool for bearings according to claim 1, characterized in that: The hand-holding part, the stopper part and the plug-in part are an integrally formed structure.

5. The inspection tool for bearings according to claim 1, characterized in that: The hand-held part, the stopper part and the plug-in part are split structures and can be disassembled.

6. The inspection tool for bearings according to claim 1, characterized in that: The hand-held part and the stop part are an integrally formed structure; the plug-in part is detachably connected to the stop part.

7. The inspection tool for bearings according to claim 5 or 6, characterized in that: Also includes: At least one plug-in component spare part, the diameter of the plug-in component spare part is different from the diameter of the plug-in component.

8. The inspection tool for bearings according to any one of claims 1 to 6, characterized in that: The hand-holding part, the stopper part and the plug-in part are made of metal.

9. The inspection tool for bearings according to claim 1, characterized in that: The plug-in portion and the inner ring of the bearing are clearance-fitted; the length of the plug-in portion is not less than the height of the bearing.

10. The inspection tool for bearings according to claim 1, characterized in that: The length of the hand-held portion is L1; the sum of the lengths of the stopper portion and the plug-in portion is L2; ​​L1>L2.

11. The inspection tool for bearings according to claim 1, characterized in that: The inspection tool comprises two inspection heads; the two inspection heads are respectively arranged at two ends of the handheld part; and the two inspection heads have different sizes.

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