A bearing waterproofness inspection tool

Abstract

The utility model relates to a bearing waterproofness inspection frock, the frock includes first pressure combination group and second pressure combination group, first pressure combination group and second pressure combination group are matched in bearing's outer ring and outer ring respectively, the frock still includes the power part, and the power part is matched in first pressure combination group, the utility model discloses a frock structure that is composed of first pressure combination group and second pressure combination group is provided, and the end face on the inner and outer rings of bearing is tightly pasted to the rubber ring through the action of power part, whether the bearing sealing ring can prevent water is judged by only observing the air pressure leakage amount on the detection instrument to confirm whether the gas passes through the bearing sealing ring, does not contact water medium, does not produce damage after clamping, has no complex mechanism, and batch detection is easy to realize.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing technology, and in particular to a bearing waterproof testing fixture. Background Technology

[0002] To ensure the normal operation and extended service life of bearings in humid or underwater environments, and given the high waterproof requirements of some customer applications, bearings are typically required to have waterproof properties. Currently, there are two main methods for testing the waterproofness of bearings: First, depending on the bearing's waterproof rating, the entire bearing is placed in water at a certain depth and left to stand for a period of time to check for water ingress. Second, the bearing is interference-fitted into a mandrel and bushing, placed in water, and pressurized gas is introduced on one side while observing for leaks on the other.

[0003] However, both existing testing methods have certain drawbacks: The first method is simple to operate, but because the bearing is completely immersed in water, it is prone to rust and is not suitable for large-scale testing. The second method is more complex to operate. Since both the inner and outer diameters are interference fits, removing the bearing from the mandrel and bushing after testing can easily damage the bearing, making it unsuitable for large-scale testing as well. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a bearing waterproofness testing fixture to solve one or more problems in the prior art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A bearing waterproofness testing fixture includes a first pressing group and a second pressing group, which are respectively fitted onto the outer ring and the outer ring of the bearing; the fixture also includes a power unit, which is fitted onto the first pressing group.

[0006] Furthermore, the first pressing assembly includes a first pressing block, and the tooling also includes a base, with the first pressing block disposed on the base.

[0007] Furthermore, the first pressure block has a first recess on its end face away from the base, and a second recess is also provided on the surface of the first recess.

[0008] Furthermore, the tooling also includes a connector that communicates with the first pressure block.

[0009] Furthermore, the first pressing assembly also includes a second pressing block, the second pressing block having a third recess on its end face near the base, and a fourth recess on the surface of the third recess.

[0010] Furthermore, the second pressing assembly includes a third pressing block, which has a fifth recess and a first protrusion on its end face away from the base; a groove is formed in the first protrusion, and the groove is provided with an internal thread.

[0011] Furthermore, the second pressing assembly also includes a fourth pressing block, which has a sixth recess on its end face near the base, and a seventh recess on the surface of the sixth recess.

[0012] Furthermore, the fourth pressure block has a second protrusion on its end face near the base, and the surface of the second protrusion has an external thread.

[0013] Furthermore, the tooling also includes rubber rings, which are respectively disposed in the second recess, the fourth recess, the fifth recess, and the seventh recess.

[0014] Furthermore, the power unit includes a support and a pressure rod assembly, the support being disposed on the base; the pressure rod assembly includes a first pressure rod and a second pressure rod, both the first pressure rod and the second pressure rod having one end connected to the support and cooperating with each other, and one end of the second pressure rod also being connected to the second pressure block.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows: This utility model uses a tooling structure consisting of a first pressing group and a second pressing group. With the help of a power unit, the rubber ring is tightly attached to the end faces of the inner and outer rings of the bearing. The ability to determine whether the bearing seal is waterproof is confirmed by observing the air pressure leakage on the testing instrument. It does not come into contact with water, does not cause damage after clamping, has no complicated mechanism, and is easy to achieve batch testing. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a bearing waterproofness testing fixture according to an embodiment of the present invention is shown.

[0017] Figure 2 The diagram shows the assembly structure of the first pressing group and the second pressing group of a bearing waterproofness testing fixture according to an embodiment of the present invention.

[0018] Figure 3 The diagram shows a cross-sectional view of a bearing waterproofing testing fixture according to an embodiment of the present invention, in the AA direction.

[0019] Figure 4 The diagram shows the structure of the first pressure block of a bearing waterproofness testing fixture according to an embodiment of the present invention.

[0020] Figure 5The diagram shows the structure of the second pressure block of a bearing waterproofness testing fixture according to an embodiment of the present invention.

[0021] Figure 6 This invention provides a schematic diagram of the structure of the second pressing assembly of a bearing waterproofness testing fixture according to an embodiment of the present invention.

[0022] Figure 7 The diagram shows the structure of the third pressure block of a bearing waterproofness testing fixture according to an embodiment of the present invention.

[0023] Figure 8 The diagram shows the structure of the second pressure block of a bearing waterproofness testing fixture according to an embodiment of the present invention.

[0024] The following labels are used in the attached diagram: 1. First pressing assembly; 101. First pressing block; 1011. First recessed portion; 1012. Second recessed portion; 102. Second pressing block; 1021. Third recessed portion; 1022. Fourth recessed portion; 2. Second pressing assembly; 201. Third pressing block; 2011. Fifth recessed portion; 2012. First protrusion; 20121. Groove; 20122. Internal thread; 202. Fourth pressing block; 2021. Sixth recessed portion; 2022. Seventh recessed portion; 2023. Second protrusion; 20231. External thread; 3. Power unit; 301. Support; 302. Press rod assembly; 3021. First press rod; 3022. Second press rod; 4. Base; 5. Connector; 6. Rubber ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a bearing waterproofing testing fixture proposed by this utility model, in conjunction with the accompanying drawings and specific embodiments, will provide further clarity. The advantages and features of this utility model will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0026] The following describes the specific structure of a bearing water resistance testing fixture: Please see Figures 1 to 3The bearing waterproofing testing fixture of this embodiment includes a first pressing group 1 and a second pressing group 2, which are respectively fitted to the outer ring and outer ring of the bearing. The fixture also includes a power unit 3 and a base 4. The power unit 3 is fitted to the first pressing group 1. The power unit 3 includes a support 301 and a pressure rod group 302. The support 301 is disposed on the base 4. The pressure rod group 302 includes a first pressure rod 3021 and a second pressure rod 3022. Both the first and second pressure rods 3021 and 3022 are connected at one end to the support 301 and cooperate with each other. One end of the second pressure rod 3022 is also connected to the second pressure block 102. By lifting or pressing the first pressure rod 3021, the second pressure rod 3022 is driven to lift or press down in the same direction, thereby tightening or loosening the first pressing group 1.

[0027] Please continue reading. Figures 4 to 8 The first pressing assembly 1 includes a first pressing block 101, which is disposed on the base 4. The first pressing block 101 has a first recess 1011 on its end face away from the base 4, and a second recess 1012 is also provided on the surface of the first recess 1011. The tooling also includes a connector 5, which communicates with the first pressing block 101, allowing gas to be introduced into the first pressing block 101 to detect gas leakage.

[0028] Furthermore, the first pressing assembly 1 also includes a second pressing block 102, the second pressing block 102 having a third recess 1021 on its end face near the base 4, and a fourth recess 1022 on the surface of the third recess 1021. Preferably, the recessed end faces of the first recess 1011 and the third recess 1021 are both used to mate with the outer ring end face of the bearing.

[0029] Furthermore, the second pressing assembly 2 includes a third pressing block 201. The third pressing block 201 has a fifth recess 2011 and a first protrusion 2012 on its end face away from the base 4. A groove 20121 is formed in the first protrusion 2012, and an internal thread 20122 is provided in the groove 20121. The second pressing assembly 2 also includes a fourth pressing block 202. The fourth pressing block 202 has a sixth recess 2021 on its end face near the base 4, and a seventh recess 2022 is also provided on the surface of the sixth recess 2021. Preferably, the end face of the third pressing block 201 away from the base 4 and the recessed end face of the sixth recess 2021 are used to mate with the end face of the bearing inner ring.

[0030] Furthermore, the fourth pressure block 202 has a second protrusion 2023 on its end face near the base 4, and the surface of the second protrusion 2023 has an external thread 20231. The external thread 20231 engages with the internal thread 20122, thereby causing the third pressure block 201 and the fourth pressure block 202 to press against the two end faces of the bearing inner ring, thus performing preliminary clamping of the bearing.

[0031] Furthermore, the tooling also includes rubber rings 6, which are respectively disposed in the second recess 1012, the fourth recess 1022, the fifth recess 2011 and the seventh recess 2022. The waterproofness of the bearing is verified by the placement of the rubber rings 6.

[0032] The specific working process of the bearing waterproofness testing fixture described in this embodiment of the present invention is described below: Place the rubber rings 6 into the fifth recess 2011 and the seventh recess 2022 respectively. Align the bearing inner ring with the end faces of the third pressure block 201 and the fourth pressure block 202, and tighten the third pressure block 201 and the fourth pressure block 202. Then place the rubber rings 6 into the second recess 1012 and the fourth recess 1022 respectively. Place the assembled second pressing assembly 2 and the bearing inside the first pressing assembly 1, and align the bearing outer ring with the end faces of the first pressure block 101 and the second pressure block 102. Press the first pressure block 101 and the second pressure block 102 tightly using the first pressure rod 3021. Inspect by introducing gas through the connector 5. Since the end faces of the inner and outer rings of the bearing are sealed by the first pressing assembly 1, the second pressing assembly 2, and the rubber rings 6, the amount of gas introduced is monitored to determine whether the seal between the inner and outer rings of the bearing is leaking.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tooling for testing the water resistance of bearings, characterized in that: The tooling includes a first pressing group and a second pressing group, which are respectively fitted to the outer ring and the outer ring of the bearing; the tooling also includes a power unit, which is fitted to the first pressing group.

2. The bearing waterproofness testing fixture as described in claim 1, characterized in that: The first pressing assembly includes a first pressing block, and the tooling also includes a base, with the first pressing block disposed on the base.

3. The bearing waterproofness testing fixture as described in claim 2, characterized in that: The first pressure block has a first recess on its end face away from the base, and a second recess is also provided on the surface of the first recess.

4. The bearing waterproofness testing fixture as described in claim 3, characterized in that: The tooling also includes a connector, which is connected to the first pressure block.

5. The bearing waterproofness testing fixture as described in claim 4, characterized in that: The first pressing assembly further includes a second pressing block, which has a third recess on its end face near the base, and a fourth recess on the surface of the third recess.

6. The bearing waterproofness testing fixture as described in claim 5, characterized in that: The second pressing assembly includes a third pressing block, which has a fifth recess and a first protrusion on its end face away from the base; a slot is formed in the first protrusion, and the slot is provided with an internal thread.

7. The bearing waterproofness testing fixture as described in claim 6, characterized in that: The second pressing assembly further includes a fourth pressing block, which has a sixth recess on its end face near the base, and a seventh recess on the surface of the sixth recess.

8. The bearing waterproofness testing fixture as described in claim 7, characterized in that: The fourth pressure block has a second protrusion on its end face near the base, and the surface of the second protrusion has an external thread.

9. The bearing waterproofness testing fixture as described in claim 8, characterized in that: The tooling also includes rubber rings, which are respectively disposed in the second recess, the fourth recess, the fifth recess, and the seventh recess.

10. The bearing waterproofness testing fixture as described in claim 9, characterized in that: The power unit includes a support and a pressure rod assembly. The support is disposed on the base. The pressure rod assembly includes a first pressure rod and a second pressure rod. Both the first pressure rod and the second pressure rod are connected to the support at one end and cooperate with each other. One end of the second pressure rod is also connected to the second pressure block.

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