Wave spring assembly and rotary machine

Abstract

The utility model provides a kind of wave spring's assembly component and rotating machinery, it is related to rotating machinery technical field, wave spring's assembly component includes: mounting seat, mounting seat has mounting hole;Wave spring, it is set in mounting hole, the surface of one side of wave spring has at least one wave valley;Limiting piece, it is set in mounting hole, along the axial direction of mounting hole, limiting piece is located in one side of wave spring, limiting piece includes main body and at least one protrusion, protrusion is set in one side of main body, protrusion and wave valley are opposite, in the case where wave spring is in initial state, protrusion and wave valley are separated, limiting piece is used to limit the compression amount of wave spring.Wherein, protrusion supports wave valley, to limit the compression amount of wave spring, limit the radial deformation of wave spring, avoid wave spring to jam the hole wall of mounting hole, ensure that wave spring is not jammed by mounting hole after wave spring installation is completed.

Description

Technical Field

[0001] This utility model relates to the field of rotating machinery technology, and more specifically to an assembly of a wave spring and rotating machinery. Background Technology

[0002] In related technologies, wave springs are typically used in conjunction with bearings. Their installation position is usually in the mounting hole that mates with the bearing. The outer diameter of the wave spring is usually similar to the size of the mounting hole and slightly smaller than the inner diameter of the mounting hole.

[0003] However, during assembly and use, the wave spring will inevitably undergo significant compression deformation. When the wave spring is subjected to excessive pressure, it will undergo radial elastic deformation. This will eliminate the gap between the wave spring and the mounting hole, making it easy for the wave spring to get stuck in the mounting hole and unable to recover. This will cause the preload effect to disappear, resulting in axial movement of the bearing and affecting the operation of the device. Utility Model Content

[0004] The present invention aims to at least solve or improve the technical problem in the related art that the wave spring interferes with the wall of the mounting hole.

[0005] Therefore, a first aspect of this utility model provides an assembly for a wave spring.

[0006] A second aspect of this invention provides a rotating machine.

[0007] In view of the above, according to a first aspect of the present invention, the present invention provides an assembly for a wave spring, comprising: a mounting base having a mounting hole; a wave spring disposed within the mounting hole, wherein one side surface of the wave spring has at least one trough; and a limiting member disposed within the mounting hole, located along the axial direction of the mounting hole on one side of the wave spring, the limiting member comprising a body and at least one protrusion disposed on one side of the body, the protrusion and the trough being opposite each other, wherein when the wave spring is in its initial state, the protrusion and the trough are separated, and the limiting member is used to limit the compression of the wave spring.

[0008] The wave spring assembly proposed in this utility model includes a mounting base, a wave spring, and a limiting member. The mounting base has a mounting hole, the wave spring and the limiting member are disposed in the mounting hole, and the wave spring and the limiting member are stacked along the axial direction of the mounting hole.

[0009] The limiting component includes a main body and at least one protrusion. The protrusion is located on one side of the main body and faces the wave spring. The wave spring has a trough. When the wave spring is in its initial state, the protrusion and the trough are separated. When the compression of the wave spring reaches a certain level, the trough and the protrusion abut against each other, and the protrusion supports the trough, thereby limiting the compression of the wave spring, limiting the radial deformation of the wave spring, preventing the wave spring from getting stuck in the wall of the mounting hole, and ensuring that the wave spring is not stuck in the mounting hole after installation.

[0010] In some embodiments, the number of protrusions may be greater than or equal to the number of troughs, with a trough and at least one protrusion opposite each other.

[0011] In this embodiment, the number of protrusions is greater than or equal to the number of troughs, thereby ensuring that each trough is opposite to at least one protrusion, so that each trough has at least one protrusion for support, ensuring the reliability of the protrusions supporting the wave spring and reducing the possibility that the wave spring will get stuck on the wall of the mounting hole after it is tilted.

[0012] In some embodiments, optionally, in the initial state, the height of the wave spring is hs; when the wave spring is in contact with the wall of the mounting hole, the compression of the wave spring is es; the height of the protrusion protruding from the body is h; wherein, h > hs - es.

[0013] In this embodiment, along the axial direction of the mounting hole, the initial height of the wave spring is hs. When the wave spring is in contact with the wall of the mounting hole, the compression of the wave spring is es. The height of the protrusion protruding from the main body is h, where h > hs - es. This ensures that the wave spring is supported by the protrusion before deforming to contact the mounting hole, thereby ensuring that the wave spring will not get stuck on the wall of the mounting hole.

[0014] In some embodiments, optionally, when there are multiple protrusions, the multiple protrusions have the same height.

[0015] In this embodiment, when there are multiple protrusions, the height of the multiple protrusions is the same, so that the multiple protrusions can provide stable support and reduce the possibility of the wave spring tilting.

[0016] In some embodiments, the body may optionally have a ring-shaped structure, with the protrusion not protruding from the body along the radial direction of the body.

[0017] In this embodiment, the main body has a ring-shaped structure, and at least one protrusion is provided on the surface of the main body facing the wave spring. Along the radial direction of the main body, the protrusion does not protrude from the main body, thereby ensuring the overall regularity of the limiting member, reducing the possibility of the protrusion being scratched and deformed, and ensuring the supporting effect of the protrusion on the wave spring.

[0018] In some embodiments, optionally, the orthogonal projection of the wave spring onto the limiting member falls entirely on the limiting member.

[0019] In this embodiment, the orthogonal projection of the wave spring onto the limiting member falls entirely on the limiting member. That is, the wave spring is completely supported by the limiting member. The contact between the wave spring and the limiting member can achieve a good support effect, thereby ensuring the reliability of the limiting member's support for the wave spring.

[0020] In some embodiments, the mounting hole may optionally have a shoulder, the limiting member is an annular structure, and the wave spring, the limiting member and the shoulder are stacked.

[0021] In this embodiment, the mounting hole has a shoulder, and one of the limiting member and the wave spring is placed on one side of the shoulder. That is, the limiting member is located between the wave spring and the shoulder, or the wave spring is located between the limiting member and the shoulder. The limiting member is a ring structure. The installation of the rotating shaft is achieved by the avoidance between the shoulder and the ring structure limiting member.

[0022] In some embodiments, the fit between the limiting member and the mounting hole may be a clearance fit.

[0023] In this embodiment, the fit between the limiting member and the mounting hole is a clearance fit, thereby reducing the difficulty of installing the limiting member.

[0024] According to a second aspect of the present invention, the present invention provides a rotating machine, comprising: a bearing; a rotating shaft passing through the bearing; and an assembly of a wave spring as provided in the first aspect embodiment; wherein the bearing is fixed in the mounting hole of the assembly of the wave spring, and along the axial direction of the mounting hole, the bearing is located on one side of the wave spring and the limiting member.

[0025] The rotating machinery proposed in this utility model includes a bearing, a rotating shaft, and an assembly of a wave spring as provided in the first aspect embodiment. The bearing is installed in the mounting hole of the wave spring assembly. Along the axial direction of the mounting hole, the bearing is located on one side of the wave spring and the limiting member, so that the bearing generates preload on the wave spring to ensure the support of the wave spring on the bearing. The rotating shaft passes through the bearing.

[0026] The rotating machinery proposed in this application, since it includes the wave spring assembly as provided in the first aspect embodiment, has all the beneficial effects of the wave spring assembly as provided in the first aspect embodiment, which will not be described in detail here.

[0027] In this design, the wave spring is no longer stuck by the wall of the mounting hole, which can better support the bearing and ensure the stability and reliability of the bearing.

[0028] In some embodiments, the rotating machinery may optionally be an electric motor or a speed reducer.

[0029] In this embodiment, the rotating machinery is a motor or a speed reducer.

[0030] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0031] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0032] Figure 1 A cross-sectional view of an assembly of a wave spring according to an embodiment of the present invention is shown.

[0033] Figure 2 This illustration shows one of the structural schematic diagrams of the limiting member in the assembly assembly of a wave spring according to an embodiment of the present invention;

[0034] Figure 3 This is a second schematic diagram of the structure of the limiting member in the assembly assembly of the wave spring provided in one embodiment of the present invention;

[0035] Figure 4 The third schematic diagram shows the structure of the limiting member in the assembly assembly of the wave spring provided in one embodiment of the present invention;

[0036] Figure 5 As shown Figure 4 A sectional view of the limiting member along the AA direction;

[0037] Figure 6 As shown Figure 4 A sectional view of the limiting member along the BB direction shown;

[0038] Figure 7 A cross-sectional view of a wave spring in an assembly of a wave spring according to an embodiment of the present invention is shown.

[0039] Figure 8 A schematic diagram of the structure of a rotating machine provided in one embodiment of the present invention is shown;

[0040] Figure 9 As shown Figure 8 A cross-sectional view of the rotating machinery along the EE direction.

[0041] in, Figures 1 to 9 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0042] 100 Wave spring assembly, 110 Mounting base, 112 Mounting hole, 114 Hole shoulder, 120 Wave spring, 122 Wave trough, 130 Limiting element, 132 Body, 134 Protrusion, 200 Rotating machinery, 210 Bearing, 220 Shaft. Detailed Implementation

[0043] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0045] The following reference Figures 1 to 9 This invention describes the assembly 100 of a wave spring and the rotating machinery 200 provided according to some embodiments of the present invention.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, according to a first aspect embodiment of the present invention, the present invention provides an assembly 100 for a wave spring, which is applied to a rotating machine 200. The assembly 100 includes a mounting base 110, a wave spring 120, and a limiting member 130. The mounting base 110 has a mounting hole 112. The wave spring 120 and the limiting member 130 are disposed in the mounting hole 112. One side surface of the wave spring 120 has crests and troughs 122. At least one crest and at least one trough 122 can be alternately arranged. Along the axial direction of the mounting hole 112, the wave spring 120 and the limiting member 130 are stacked, with the wave spring 120 located on one side of the limiting member 130.

[0047] The limiting member 130 includes a main body 132 and at least one protrusion 134. The protrusion 134 is disposed on one side of the main body 132, and the protrusion 134 is opposite to the trough 122. When the wave spring 120 is in its initial state, the protrusion 134 and the trough 122 are separated, thereby ensuring that the wave spring 120 has a certain amount of compression. The limiting member 130 is used to limit the maximum amount of compression of the wave spring 120. This ensures that the wave spring 120 will not be stuck by the wall of the mounting hole 112 when it is at its maximum compression.

[0048] The wave spring assembly 100 provided by this utility model includes a mounting base 110, a wave spring 120 and a limiting member 130. The mounting base 110 has a mounting hole 112. The wave spring 120 and the limiting member 130 are disposed in the mounting hole 112, and the wave spring 120 and the limiting member 130 are stacked along the axial direction of the mounting hole 112.

[0049] The limiting member 130 includes a main body 132 and at least one protrusion 134. The protrusion 134 is disposed on one side of the main body 132 and faces the wave spring 120. The wave spring 120 has a trough 122. When the wave spring 120 is in its initial state, the protrusion 134 and the trough 122 are separated. When the compression of the wave spring 120 reaches a certain level, the trough 122 and the protrusion 134 abut against each other, and the protrusion 134 supports the trough 122, thereby limiting the compression of the wave spring 120, limiting the radial deformation of the wave spring 120, preventing the wave spring 120 from getting stuck in the wall of the mounting hole 112, and ensuring that the wave spring 120 is not stuck in the mounting hole 112 after installation.

[0050] In the initial state of the wave spring 120, the protrusion 134 and the trough 122 are separated, thereby ensuring that the protrusion 134 does not affect the compression of the wave spring 120, ensuring that the wave spring 120 can provide sufficient support for parts such as the bearing 210, and also not affecting the selection of the wave spring 120.

[0051] In some embodiments, the number of protrusions 134 is optionally greater than the number of troughs 122, with one trough 122 opposite to one or more protrusions 134.

[0052] In this embodiment, the number of protrusions 134 is greater than the number of troughs 122, thereby ensuring that each trough 122 is opposite to one or more protrusions 134, so that each trough 122 is supported by at least one protrusion 134, ensuring the reliability of the support of the protrusions 134 for the wave spring 120, and reducing the possibility that the wave spring 120 will get stuck in the wall of the mounting hole 112 after it is tilted.

[0053] Different troughs 122 can be opposite to different numbers of protrusions 134, or they can be opposite to the same number of protrusions 134.

[0054] like Figure 1 As shown, in some embodiments, optionally, the number of protrusions 134 is equal to the number of troughs 122, with one trough 122 and one protrusion 134 opposite each other.

[0055] In this embodiment, the number of protrusions 134 is equal to the number of troughs 122, thereby ensuring that each trough 122 is opposite to a protrusion 134, so that each trough 122 is supported by a protrusion 134, ensuring the reliability of the support of the protrusion 134 for the wave spring 120, and reducing the possibility that the wave spring 120 will be stuck in the wall of the mounting hole 112 after it is tilted.

[0056] Specifically, the number of protrusions 134 can be 1, 2, 3, 4 or 5, etc., and the specific number is determined by the trough 122 of the wave spring 120.

[0057] like Figure 6 and Figure 7 As shown, in some embodiments, optionally, along the axial direction of the mounting hole 112, the initial height of the wave spring 120 is hs, the compression of the wave spring 120 is es when the wave spring 120 is in contact with the hole wall of the mounting hole 112, and the height of the protrusion 134 protruding from the body 132 is h, where h > hs - es.

[0058] In this embodiment, along the axial direction of the mounting hole 112, the initial height of the wave spring 120 is hs. When the wave spring 120 is in contact with the wall of the mounting hole 112, the compression of the wave spring 120 is es. The height of the protrusion 134 protruding from the main body 132 is h, where h > hs - es. This ensures that the wave spring 120 is supported by the protrusion 134 before deforming to contact the mounting hole 112, thereby ensuring that the wave spring 120 will not get stuck on the wall of the mounting hole 112.

[0059] The initial state is the state of the wave spring 120 when it is not compressed, which can be understood as the free state of the wave spring 120.

[0060] like Figure 5 and Figure 6 As shown, in some embodiments, optionally, when there are multiple protrusions 134, the multiple protrusions 134 protrude from the body 132 at the same height.

[0061] In this embodiment, when there are multiple protrusions 134, the multiple protrusions 134 have the same height, so that the multiple protrusions 134 can provide stable support and reduce the possibility of the wave spring 120 tilting.

[0062] like Figure 2 and Figure 4 As shown, in some embodiments, optionally, the body 132 has a ring-shaped structure. The body 132 may be a ring, and along the radial direction of the body 132, the edge of the protrusion 134 is aligned with the edge of the body 132, or the edge of the body 132 is recessed into the edge of the body 132.

[0063] In this embodiment, the main body 132 has a ring-shaped structure, and at least one protrusion 134 is provided on the surface of the main body 132 facing the wave spring 120. Along the radial direction of the main body 132, the protrusion 134 does not protrude from the main body 132, thereby ensuring the overall regularity of the limiting member 130, reducing the possibility of the protrusion 134 being scratched and deformed, and ensuring the supporting effect of the protrusion 134 on the wave spring 120.

[0064] like Figure 1 As shown, in some embodiments, optionally, the orthographic projection of the wave spring 120 onto the limiting member 130 falls entirely on the limiting member 130.

[0065] In this embodiment, the orthographic projection of the wave spring 120 onto the limiting member 130 falls entirely on the limiting member 130. That is, the wave spring 120 is completely supported by the limiting member 130. The contact between the wave spring 120 and the limiting member 130 can achieve a good support effect, thereby ensuring the reliability of the limiting member 130's support for the wave spring 120.

[0066] Furthermore, along the radial direction of the main body 132, the edge of the protrusion 134 is aligned with the edge of the main body 132, and both the main body 132 and the protrusion 134 can fully support the wave spring 120, thereby ensuring the support of the limiting member 130 for the wave spring 120.

[0067] like Figure 1 As shown, in some embodiments, optionally, the mounting hole 112 has a hole shoulder 114, the limiting member 130 has an annular structure, and the wave spring 120, the limiting member 130 and the hole shoulder 114 are stacked.

[0068] In this embodiment, the mounting hole 112 has a shoulder 114, and one of the limiting member 130 and the wave spring 120 is placed on one side of the shoulder 114. That is, the limiting member 130 is located between the wave spring 120 and the shoulder 114, or the wave spring 120 is located between the limiting member 130 and the shoulder 114. The limiting member 130 has a ring structure. The installation of the rotating shaft 220 is achieved by the avoidance between the shoulder 114 and the ring structure limiting member 130.

[0069] The shoulder 114 has a ring-shaped structure, and the mounting hole 112 in the middle can avoid the rotating shaft 220.

[0070] like Figure 1 As shown, in some embodiments, optionally, the fit between the limiting member 130 and the mounting hole 112 is a clearance fit.

[0071] In this embodiment, the fit between the limiting member 130 and the mounting hole 112 is a clearance fit, thereby reducing the installation difficulty of the limiting member 130.

[0072] The outer contour of the limiting member 130 is circular, and the mounting hole 112 is a circular hole. The outer diameter of the limiting member 130 is slightly smaller than the diameter of the mounting hole 112, thereby ensuring a clearance fit between the limiting member 130 and the mounting hole 112.

[0073] like Figure 5 and Figure 6 As shown, in some embodiments, the protrusion 134 may optionally be columnar, with the same size at all points, and the edges of the protrusion 134 may be chamfered.

[0074] This utility model provides an assembly 100 for a wave spring used in a bearing 210, which can solve the technical problem of interference between the wave spring 120 and the hole wall of the mounting hole 112 caused by excessive deformation of the wave spring 120.

[0075] like Figure 1 As shown, this utility model provides an assembly 100 for a wave spring for a bearing 210, which limits the transition deformation of the wave spring 120 by stacking the limiting member 130 and the wave spring 120.

[0076] Among them, such as Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the limiting member 130 is an annular part with protrusions 134. The main body 132 of the limiting block has an annular structure. The size of the main body 132 is comparable to the size of the shoulder 114 of the mounting hole 112. The outer diameter D of the main body 132 is slightly smaller than the hole diameter Dh of the mounting hole 112 to ensure a clearance fit between the main body 132 and the mounting hole 112. The inner diameter d of the main body 132 is close to the inner diameter ds of the wave spring 120 to ensure that the bottom surface of the wave spring 120 can be well supported. In the axial direction of the mounting hole 112, the main body 132 is provided with multiple protrusions 134. The tops of the multiple protrusions 134 are flush and regularly shaped. Their number is equal to the number of troughs of the wave spring 120. The protrusions 134 are evenly distributed in the circumferential direction along the end face of the main body 132.

[0077] like Figure 6 and Figure 7 As shown, along the radial direction of the mounting hole 112, the relationship between the height h of the protrusion 134 and the compression of the wave spring 120 is as follows:

[0078] Let the initial height of the wave spring 120 be hs. When the wave spring 120 is compressed to the point of interfering with the wall of the mounting hole 112, the compression of the wave spring 120 is es. Then, h > hs - es.

[0079] The limiting member 130 is installed between the wave spring 120 and the shoulder 114 of the mounting hole 112. The limiting member 130 is installed between the wave spring 120 and the bearing 210, and the protrusion 134 of the limiting member 130 faces the wave spring 120 and is opposite to the trough 122 of the wave spring 120, so as to keep the overall height / thickness as small as possible.

[0080] like Figure 8 and Figure 9 As shown, according to a second aspect embodiment of the present invention, the present invention provides a rotating machine 200, including: a bearing 210; a rotating shaft 220 passing through the bearing 210; and a wave spring assembly 100 as provided in the first aspect embodiment; wherein the bearing 210 is fixed in the mounting hole 112 of the wave spring assembly 100, and along the axial direction of the mounting hole 112, the bearing 210 is located on one side of the wave spring 120 and the limiting member 130.

[0081] The rotating machinery 200 provided by this utility model includes a bearing 210, a rotating shaft 220, and an assembly 100 for a wave spring as provided in the first aspect embodiment. The bearing 210 is installed in the mounting hole 112 of the wave spring assembly 100. Along the axial direction of the mounting hole 112, the bearing 210 is located on one side of the wave spring 120 and the limiting member 130, so that the bearing 210 generates preload on the wave spring 120 to ensure the support of the wave spring 120 on the bearing 210. The rotating shaft 220 passes through the bearing 210.

[0082] The rotating machinery 200 provided in this application, since it includes the wave spring assembly 100 as provided in the first aspect embodiment, has all the beneficial effects of the wave spring assembly 100 as provided in the first aspect embodiment, which will not be described in detail here.

[0083] Furthermore, the bearing 210 can be installed blindly during assembly, without needing to determine whether the wave spring 120 is stuck.

[0084] The types of bearings 210 include, but are not limited to, deep groove ball bearings, cylindrical roller bearings, or tapered roller bearings. The rotating shaft 220 can be a wave generator camshaft.

[0085] The wave spring 120 is no longer stuck by the hole wall of the mounting hole 112, which can better support the bearing 210 and ensure the stability and reliability of the bearing 210.

[0086] After the rotating machinery 200 is installed, the protrusion 134 and the trough 122 of the wave spring 120 separate.

[0087] In some embodiments, the rotating machinery 200 may optionally be a motor or a speed reducer.

[0088] In this embodiment, the rotating machinery 200 is a motor or a speed reducer.

[0089] Taking a harmonic reducer as an example, since the wave generator is subjected to axial force during operation, the position of the bearing 210 will be offset. Therefore, a wave spring 120 is needed to press the bearing 210 on one side to ensure that after the offset occurs, the wave spring 120 can push the bearing 210 back to the predetermined position. However, in actual use, the wave spring 120 often interferes with the mounting hole 112 due to deformation and becomes stuck, thus losing its function.

[0090] During installation, the bearing 210 can be fixed to the shaft 220 first, and the limiting member 130 can be placed at the bottom of the mounting hole 112. Then, the wave spring 120 can be installed as required, and finally the bearing 210 can be pressed in. At this time, due to the action of the limiting member 130, the maximum deformation of the wave spring 120 is limited and will not interfere with the mounting hole 112.

[0091] This embodiment is just a typical application scenario, and there are similar application scenarios in other fields such as motors.

[0092] This application limits the maximum deformation and deformation area of ​​the wave spring 120 to prevent excessive deformation of the wave spring 120 from interfering with the mounting hole 112, thereby reducing assembly errors.

[0093] Furthermore, the initial compression of the wave spring 120 remains unaffected and can still provide the expected pressure.

[0094] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0095] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or units referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0096] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0097] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An assembly for a wave spring, characterized in that, include: Mounting base, the mounting base having mounting holes; A wave spring is disposed within the mounting hole, and one side surface of the wave spring has at least one trough; A limiting member is disposed within the mounting hole along the axial direction of the mounting hole. The limiting member is located on one side of the wave spring. The limiting member includes a main body and at least one protrusion. The protrusion is disposed on one side of the main body. The protrusion and the trough are opposite each other. When the wave spring is in its initial state, the protrusion and the trough are separated. The limiting member is used to limit the compression of the wave spring.

2. The assembly of the wave spring according to claim 1, characterized in that, The number of protrusions is greater than or equal to the number of troughs, and one trough and at least one protrusion are opposite each other.

3. The assembly of the wave spring according to claim 1, characterized in that, In the initial state, the height of the wave spring is hs; When the wave spring is in contact with the wall of the mounting hole, the compression of the wave spring is es; The protrusion extends out of the main body at a height of h; Where h > hs - es.

4. The assembly of the wave spring according to claim 1, characterized in that, When there are multiple protrusions, the height of the multiple protrusions is the same.

5. The assembly of the wave spring according to claim 1, characterized in that, The main body has a ring-shaped structure, and the protrusion does not protrude from the main body along its radial direction.

6. The assembly of the wave spring according to claim 1, characterized in that, The orthographic projection of the wave spring onto the limiting member falls entirely on the limiting member.

7. The assembly of the wave spring according to any one of claims 1 to 6, characterized in that, The mounting hole has a shoulder, the limiting member is a ring structure, and the wave spring, the limiting member and the shoulder are stacked.

8. The assembly of the wave spring according to any one of claims 1 to 6, characterized in that, The fit between the limiting member and the mounting hole is a clearance fit.

9. A rotating machine, characterized in that, include: Bearings; A rotating shaft passes through the bearing; The assembly of the wave spring as described in any one of claims 1 to 8; The bearing is fixed in the mounting hole of the wave spring assembly, and along the axial direction of the mounting hole, the bearing is located on one side of the wave spring and the limiting member.

10. The rotating machinery according to claim 9, characterized in that, The rotating machinery is a motor or a speed reducer.

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