A mistake-proofing device for preventing the misloading of upper and lower half rings on an inner steel sleeve of a ball bearing

Abstract

The application discloses a mistake-proofing device for preventing the wrong installation of upper and lower half rings on the inner steel sleeve of a ball bearing, wherein the upper half ring trace storage seat comprises a first disc base and a first limiting column arranged on the upper end face of the first disc base; two first stop lugs are arranged on the outer column surface of the first disc base in a circumferential direction; the upper end of the first stop lug is higher than the upper end face of the first disc base; and the first stop lug is used for cooperating with the end face groove on the lower end face of the upper half ring to stop; the lower half ring trace storage seat comprises a second disc base and a second limiting column arranged on the upper end face of the second disc base; two second stop lugs are arranged on the outer column surface of the second limiting column in a circumferential direction; the end of the second stop lug protrudes from the outer column surface of the second limiting column; and the second stop lug is used for cooperating with the column face groove on the inner column surface of the lower half ring to stop. The application aims at solving the problems of the wrong installation or reverse installation of the upper and lower half rings.

Description

Technical Field

[0001] This invention pertains to error prevention technology in the field of aero-engine assembly, and is particularly applicable to the assembly of ball bearings that do not have error prevention design. Specifically, it is an error prevention device that prevents the upper and lower halves of the inner steel sleeve of the ball bearing from being misassembled. Background Technology

[0002] This type of ball bearing features a detachable design, consisting of an outer steel sleeve, a cage, balls, and upper and lower half-rings of an inner steel sleeve. (See also...) Figure 1 and Figure 2 As shown, Figure 1 This refers to the upper half of the inner steel sleeve of this type of ball bearing. Figure 2 Specifically, the lower half ring of the inner steel sleeve of this type of ball bearing has six end face grooves evenly distributed circumferentially on the lower end face of the upper half ring, six cylindrical grooves evenly distributed circumferentially on the inner cylindrical surface of the lower half ring, and six end face grooves evenly distributed circumferentially on the upper end face of the lower half ring.

[0003] Because of the reflective metallic luster of the upper and lower rings, the grooves are difficult to discern visually and require tactile examination to identify their angular positions. However, workers are not allowed to handle parts barehanded during assembly; they must wear gloves. Wearing gloves further complicates the process of determining the groove positions by touch. Furthermore, the upper and lower rings of this type of ball bearing's inner steel sleeve lack error-proofing design. Therefore, due to the high daily assembly volume, if the assembler fails to carefully observe the minute part information marked on the upper and lower rings beforehand or makes a mistake, the upper and lower rings may be incorrectly or incorrectly installed, posing a risk to subsequent component assembly work. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides an anti-misinstallation device to prevent the upper and lower half rings of the inner steel sleeve of a ball bearing from being misinstalled, the purpose of which is to solve the problem of misinstallation or reverse installation of the upper and lower half rings.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] A misalignment prevention device for preventing the upper and lower halves of the inner steel sleeve of a ball bearing, comprising:

[0007] The upper semi-circular trace storage base includes a first disc base and a first limiting post disposed on the upper end surface of the first disc base. Two first stop protrusions are evenly distributed circumferentially on the outer cylindrical surface of the first disc base. The upper end of the first stop protrusion is higher than the upper end surface of the first disc base. The first stop protrusion is used to cooperate with the end face groove on the lower end surface of the upper semi-circle for stopping.

[0008] The lower semi-circular trace storage base includes a second disc base and a second limiting post disposed on the upper end surface of the second disc base. Two second stop protrusions are evenly distributed circumferentially on the outer cylindrical surface of the second limiting post. The ends of the second stop protrusions protrude from the outer cylindrical surface of the second limiting post. The second stop protrusions are used to cooperate with the cylindrical groove on the inner cylindrical surface of the lower semi-circle for stopping.

[0009] Furthermore, the center of the first limiting post coincides with the center of the first disc base, and the outer cylindrical surface of the first limiting post engages with the inner cylindrical surface of the upper half ring.

[0010] Furthermore, the height difference between the upper end of the first stop protrusion and the upper end face of the first disc base is not greater than the depth of the end face groove on the lower end face of the upper half ring.

[0011] Furthermore, a support platform is connected to the lower end surface of the first disc base, and the first stop protrusion is connected to the support platform through a connecting block.

[0012] Furthermore, the first disc base and the first limiting post are integrally formed.

[0013] Furthermore, the center of the second limiting post coincides with the center of the second disc base, the upper end surface of the second limiting post and the outer cylindrical surface are transitioned with an outer rounded corner, and the upper end of the second stop protrusion is also transitioned with the same outer rounded corner.

[0014] Furthermore, the length by which the end of the second stop protrusion protrudes beyond the outer cylindrical surface of the second limiting post is not greater than the depth of the cylindrical groove on the inner cylindrical surface of the lower half ring.

[0015] Furthermore, a receiving groove is provided on the outer cylindrical surface of the second limiting post, and the second stop protrusion is disposed in the receiving groove.

[0016] Furthermore, the second disc base and the second limiting post are integrally formed.

[0017] Furthermore, the first limiting post and the second limiting post are each surrounded by an array of at least three equally spaced fan-shaped blocks.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This invention provides a mis-installation prevention device for the upper and lower halves of the inner steel sleeve of a ball bearing. For bearings without built-in mis-installation prevention design, based on the structural characteristics of the upper and lower halves, corresponding upper and lower halves are designed with trace storage seats. The upper half is fitted onto a first limiting post, and the circumferentially distributed end-face grooves on the lower end face of the upper half engage with a first stop protrusion to achieve mis-installation prevention for the upper half. Similarly, the circumferentially distributed cylindrical grooves on the inner cylindrical surface of the lower half engage with a second stop protrusion to achieve mis-installation prevention for the lower half. Since the upper half cannot be stored in the lower half-ring trace storage seat, this physical mis-installation of the upper and lower halves effectively avoids mis-installation or reverse installation of the bearing during later assembly, completely eliminating the uncertainty brought about by human factors in bearing assembly. This achieves trace-based mis-installation management of the upper and lower halves of the inner steel sleeve of the bearing. The upper and lower half-ring trace storage seats have a compact design, are easy to maintain and use, have low manufacturing costs, and the method is practical and feasible. In other words, by utilizing the cooperation of the upper and lower semi-circular trace storage seats, the present invention identifies whether a part is the upper or lower semi-circular ring by circumferential rotation, which can effectively avoid misinstallation or reverse installation of the upper and lower semi-circular rings.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments of the present invention, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the upper half of the inner steel sleeve of a ball bearing;

[0023] Figure 2 This is a schematic diagram of the lower half of the inner steel sleeve of a ball bearing;

[0024] Figure 3 This invention provides a mis-installation device for the upper half ring of a ball bearing, which is a storage rack for the upper half ring of the bearing;

[0025] Figure 4 This is a schematic diagram of the bearing upper half ring storage rack and the upper half ring of an anti-misfit device for preventing misinstallation of the upper and lower half rings of the inner steel sleeve of a ball bearing, according to an embodiment of the present invention.

[0026] Figure 5 This invention provides a mis-installation device for the upper and lower halves of the inner steel sleeve of a ball bearing, which serves as a storage rack for the lower half of the bearing halves.

[0027] Figure 6 This is a schematic diagram of the bearing lower half-ring storage rack and the lower half-ring in accordance with an embodiment of the present invention, which is an anti-misinstallation device for preventing the upper and lower half-rings of the inner steel sleeve of a ball bearing.

[0028] 1-Upper semi-annular trace storage seat; 100-First disc base; 101-First limiting post; 102-First stop protrusion; 103-Support platform; 104-Connecting block; 2-Lower semi-annular trace storage seat; 200-Second disc base; 201-Second limiting post; 202-Second stop protrusion; 203-Receiving groove; 3-Upper semi-ring; 300-End face groove; 4-Lower semi-ring; 400-Cylindrical surface groove. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides a mis-assembly prevention device to prevent the mis-assembly of the upper and lower halves of the inner steel sleeve of a ball bearing. The device includes an independently configured upper halves track storage seat 1 and a lower halves track storage seat 2. Based on the unique structural characteristics of the upper and lower halves of the inner steel sleeve of the ball bearing, the upper halves track storage seat 1 and the lower halves track storage seat 2 are designed and manufactured respectively. The upper halves track storage seat 1 and the lower halves track storage seat 2 solve the problem of incorrect assembly of the upper and lower halves of the inner steel sleeve of the ball bearing, and prevent the upper and lower halves of the parts from being taken out by mistake.

[0031] Combination Figure 3 As shown, the upper semi-annular track storage base 1 includes a first disc base 100 and a first limiting post 101 disposed on the upper end surface of the first disc base 100. Two first stop protrusions 102 are evenly distributed circumferentially on the outer cylindrical surface of the first disc base 100. The upper end of the first stop protrusion 102 is higher than the upper end surface of the first disc base 100. The first stop protrusion 102 is used to cooperate with the end face groove 300 on the lower end surface of the upper semi-ring 3 for stopping. Preferably, the center of the first limiting post 101 coincides with the center of the first disc base 100, and the outer cylindrical surface of the first limiting post 101 cooperates with the inner cylindrical surface of the upper semi-ring 3.

[0032] Specifically, the diameter of the first limiting post 101 is smaller than the diameter of the first disc base 100. That is, when the first limiting post 101 is set on the upper end surface of the first disc base 100, a support end surface for supporting the lower end surface of the upper half ring 3 is also reserved on the upper end surface of the first disc base 100. The upper half ring 3 is fitted onto the first limiting post 101, and any two of the six end face grooves 300 evenly distributed around the lower end surface of the upper half ring 3 engage with the first stop protrusion 102. With the outer cylindrical surface of the first limiting post 101 and the support end surface of the first disc base 100, the upper half ring is protected against incorrect storage.

[0033] Combination Figure 5 As shown, the lower semi-annular track storage base 2 includes a second disc base 200 and a second limiting post 201 disposed on the upper end surface of the second disc base 200. Two second stop protrusions 202 are evenly distributed circumferentially on the outer cylindrical surface of the second limiting post 201. The ends of the second stop protrusions 202 protrude from the outer cylindrical surface of the second limiting post 201 and are used to engage with the cylindrical groove 400 on the inner cylindrical surface of the lower semi-annular ring 4 for stopping. Similarly, the diameter of the second limiting post 201 is smaller than the diameter of the second disc base 200. When the second limiting post 201 is disposed on the upper end surface of the second disc base 200, a support end surface for supporting the lower end surface of the lower semi-annular ring 4 is reserved on the upper end surface of the second disc base 200.

[0034] Preferably, the center of the second limiting post 201 coincides with the center of the second disc base 200. The upper end face of the second limiting post 201 and the outer cylindrical surface are transitioned with an outer rounded corner, and the upper end of the second stop protrusion 202 also uses the same outer rounded corner transition. Specifically, because the upper end face of the second limiting post 201 and the outer cylindrical surface are transitioned with an outer rounded corner, and the upper end of the second stop protrusion 202 also uses the same outer rounded corner transition, when the lower half ring 4 is fitted onto the second limiting post 201, any two of the six cylindrical grooves 400 evenly distributed circumferentially on the inner cylindrical surface of the lower half ring 4 can engage with the second stop protrusion 202. Combined with the outer cylindrical surface of the second limiting post 201 and the supporting end face of the second disc base 200, the lower half ring is stored in a way that prevents misoperation.

[0035] In one embodiment, the height difference between the upper end of the first stop protrusion 102 and the upper end face of the first disk base 100 is not greater than the depth of the end face groove 300 on the lower end face of the upper half ring 3. That is, the height difference between the upper end of the first stop protrusion 102 and the upper end face of the first disk base 100 needs to be sufficient to allow it to penetrate deep into the end face groove 300 on the lower end face of the upper half ring 3 to achieve stopping, and it should not interfere with the contact support between the upper half ring 3 and the upper end face of the first disk base 100.

[0036] like Figure 3As shown, in one embodiment, a support platform 103 is connected to the lower end surface of the first disc base 100, and a first stop protrusion 102 is connected to the support platform 103 via a connecting block 104. Exemplarily, the connecting block 104 and the support platform 103 are detachably connected by bolts, and the first stop protrusion 102 and the connecting block 104 are integrally formed or fixed by welding.

[0037] In one embodiment, the length of the end of the second stop protrusion 202 protruding from the outer cylindrical surface of the second limiting post 201 is not greater than the depth of the cylindrical groove 400 on the inner cylindrical surface of the lower half ring 4. The length of the end of the second stop protrusion 202 protruding from the outer cylindrical surface of the second limiting post 201 needs to be sufficient to penetrate into the cylindrical groove 400 on the inner cylindrical surface of the lower half ring 4 to achieve stop.

[0038] like Figure 5 As shown, in one embodiment, a receiving groove 203 is formed on the outer cylindrical surface of the second limiting post 201, and the second stop protrusion 202 is disposed in the receiving groove 203, i.e., it is installed in an embedded manner. In this embodiment, after the second stop protrusion 202 is disposed in the receiving groove 203, it is fixed to the second disc base 200 by bolts.

[0039] Combination Figure 3 and Figure 5 As shown, based on the above embodiments, as a more preferred embodiment, the first limiting post 101 and the second limiting post 201 are respectively surrounded by an array of at least three fan-shaped blocks at equal intervals. In other words, the first limiting post 101 and the second limiting post 201 are respectively cut into at least three fan-shaped blocks. The spacing between adjacent fan-shaped blocks facilitates the placement and removal of the upper and lower half-ring parts, which is beneficial to improving efficiency.

[0040] In some embodiments, combined with Figure 3 and Figure 5 As shown, the first disc base 100 and the first limiting post 101 are integrally formed, and the second disc base 200 and the second limiting post 201 are integrally formed.

[0041] Preferably, the upper surfaces of the first limiting post 101 and the second limiting post 201 are respectively engraved with the prompt information of the upper and lower half ring parts, which can effectively avoid the incorrect placement of the upper and lower half rings of the bearing.

[0042] For example, when assembling the upper and lower halves of the inner steel sleeve of this type of ball bearing onto the gear shaft, combined with... Figure 4 As shown, place the upper half of the bearing inner steel sleeve onto the upper half-ring track storage base and check if it can rotate continuously in the circumferential direction. If it can rotate continuously for at least 120°, it indicates that the first stop protrusion has failed to stop, the parts are placed incorrectly, and the correct parts need to be replaced. (Combined with...) Figure 6As shown, place the lower half of the bearing inner steel sleeve onto the lower half ring storage base and check if it can rotate continuously in the circumferential direction. If it can rotate continuously for at least 120°, it indicates that the second stop protrusion has failed to stop, the parts are placed incorrectly, and the correct parts need to be replaced. Through the above inspection, according to the assembly structure relationship, assemble the upper and lower half rings of the bearing inner steel sleeve onto the gear shaft in sequence. This can effectively prevent incorrect placement of the upper and lower half rings of the bearing inner steel sleeve and completely eliminate the possibility of incorrect or reversed bearing installation during subsequent component assembly.

[0043] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", 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 invention and simplifying the description, and do not indicate or imply that the device or element 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 invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A misalignment prevention device for preventing the upper and lower halves of the inner steel sleeve of a ball bearing from being misassembled, characterized in that, include: The upper semi-circular trace storage base (1) includes a first disc base (100) and a first limiting post (101) disposed on the upper end surface of the first disc base (100). Two first stop protrusions (102) are evenly distributed circumferentially on the outer cylindrical surface of the first disc base (100). The upper end of the first stop protrusion (102) is higher than the upper end surface of the first disc base (100). The first stop protrusion (102) is used to cooperate with the end face groove (300) on the lower end surface of the upper semi-circle (3) for stopping. The lower half-ring track storage seat (2) includes a second disc base (200) and a second limiting post (201) disposed on the upper end face of the second disc base (200). Two second stop protrusions (202) are evenly distributed circumferentially on the outer cylindrical surface of the second limiting post (201). The end of the second stop protrusion (202) protrudes out of the outer cylindrical surface of the second limiting post (201). The second stop protrusion (202) is used to cooperate with the cylindrical groove (400) on the inner cylindrical surface of the lower half-ring (4) to stop. A support platform (103) is connected to the lower end surface of the first disc base (100), and the first stop protrusion (102) is connected to the support platform (103) through a connecting block (104); The first limiting post (101) and the second limiting post (201) are respectively surrounded by an array of at least three fan-shaped blocks at equal intervals.

2. The anti-misalignment device for preventing misalignment of the upper and lower halves of the inner steel sleeve of a ball bearing according to claim 1, characterized in that, The center of the first limiting post (101) coincides with the center of the first disc base (100), and the outer cylindrical surface of the first limiting post (101) engages with the inner cylindrical surface of the upper half ring (3).

3. The anti-misalignment device for preventing misalignment of the upper and lower halves of the inner steel sleeve of a ball bearing according to claim 1, characterized in that, The height difference between the upper end of the first stop protrusion (102) and the upper end face of the first disc base (100) is not greater than the depth of the end face groove (300) on the lower end face of the upper half ring (3).

4. The anti-misalignment device for preventing misalignment of the upper and lower halves of the inner steel sleeve of a ball bearing according to claim 1, characterized in that, The first disc base (100) and the first limiting post (101) are integrally formed.

5. The anti-misalignment device for preventing misalignment of the upper and lower halves of the inner steel sleeve of a ball bearing according to claim 1, characterized in that, The center of the second limiting post (201) coincides with the center of the second disc base (200). The upper end surface of the second limiting post (201) and the outer cylindrical surface are transitioned by an outer rounded corner. The upper end of the second stop protrusion (202) is also transitioned by the same outer rounded corner.

6. The anti-misalignment device for preventing misalignment of the upper and lower halves of the inner steel sleeve of a ball bearing according to claim 1, characterized in that, The length of the end of the second stop protrusion (202) protruding from the outer cylindrical surface of the second limiting post (201) is not greater than the depth of the cylindrical groove (400) on the inner cylindrical surface of the lower half ring (4).

7. The anti-misalignment device for preventing misalignment of the upper and lower halves of the inner steel sleeve of a ball bearing according to claim 1, characterized in that, The second limiting post (201) has a receiving groove (203) on its outer cylindrical surface, and the second stop protrusion (202) is disposed in the receiving groove (203).

8. The anti-misalignment device for preventing misalignment of the upper and lower halves of the inner steel sleeve of a ball bearing according to claim 1, characterized in that, The second disc base (200) and the second limiting post (201) are integrally formed.

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