Locking structure for drive axle wheel edge and drive axle

Abstract

The utility model discloses a locking structure for a drive axle wheel edge and a drive axle. A lubricating structure comprises a supporting shaft (10) and a lubricating shaft (20), the hub assembly (20) is pivotally arranged on the supporting rotating shaft in a sleeving manner; the inner tooth assembly (30) is connected to the supporting shaft (10) through a key, and the inner tooth assembly (30) is located at the end of the supporting shaft (10) and is close to the hub assembly (20); the locking nut (40) is connected to the supporting shaft (10) through threads and is configured to be used for limiting the degree of freedom of the inner tooth assembly (30) in the axial direction; and the anti-falling mechanism (50) is connected to the locking nut (40) and is configured to be used for preventing the locking nut (40) from falling off from the supporting shaft (10).

Description

Technical Field

[0001] This utility model relates to the field of drive axle wheel-side reducer equipment, and in particular to a locking structure for drive axle wheel-side and a drive axle. Background Technology

[0002] In existing technologies, the locking nuts of drive axle wheel-side reducers are prone to loosening. Once loosening occurs, it can cause minor issues such as oil seal leakage and gear damage, or even lead to the wheel-side reducer detaching and causing a safety accident. Therefore, the reliability of the locking nuts of drive axle wheel-side reducers directly determines the safety of the drive axle and is a key quality control point in drive axle manufacturing. Thus, there is an urgent need for a locking structure for drive axle wheel-side reducers that can prevent loosening. Summary of the Invention

[0003] This solution addresses the problems and needs raised above by proposing a locking structure for the wheel side of a drive axle and a drive axle. Due to the adoption of the following technical features, the above technical objectives can be achieved, and several other technical effects are also brought about.

[0004] One objective of this invention is to provide a locking structure for the edge of a drive axle wheel, comprising:

[0005] Support shaft;

[0006] The hub assembly is pivotally mounted on the support shaft;

[0007] An internal gear assembly is connected to the support shaft by a key, and the internal gear assembly is located at the end of the support shaft and close to the hub assembly;

[0008] A lock nut, threadedly connected to the support shaft, is configured to limit the axial degree of freedom of the internal gear assembly;

[0009] It also includes an anti-slip mechanism, connected to the locking nut and configured to prevent the locking nut from slipping off the support shaft.

[0010] In this technical solution, by connecting an anti-loosening mechanism to the locking nut, the locking nut can be prevented from loosening and slipping during use. This can effectively prevent oil leakage from the wheel-side reducer oil seal, damage to gear components, and the wheel-side reducer from falling off, thus avoiding safety accidents. This greatly improves the safety and reliability of the locking structure, and the structure is simple and reliable.

[0011] In addition, the locking structure for the drive axle wheel side according to this utility model may also have the following technical features:

[0012] In one example of this utility model, the anti-detachment mechanism includes: a fastener that connects the locking nut to the internal tooth assembly to limit the circumferential degree of freedom of the locking nut; wherein, the locking nut has at least one first connecting hole, the internal tooth assembly has at least one second connecting hole corresponding to the at least one first connecting hole, and the fastener passes through the first connecting hole and the second connecting hole in sequence.

[0013] In one example of this utility model, the first connecting hole is a groove structure, which is formed on the edge of the locking nut.

[0014] In one example of this utility model, the first connecting hole includes a plurality of holes and is spaced apart along the circumferential direction of the locking nut.

[0015] In one example of this utility model, the anti-detachment mechanism includes:

[0016] A flange portion is formed in the circumferential direction of the locking nut, extending along the axial direction of the locking nut and from one side of the locking nut toward the side opposite to the locking nut;

[0017] At least one connecting groove is provided on the support shaft;

[0018] Specifically, an external force is used to force the flange portion to deform radially so that the flange portion is embedded into the connecting groove of the support shaft.

[0019] In one example of this utility model, an outer edge is formed at the end of the support shaft along the axial direction, and the outer edge extends from the outer wall of the support shaft toward a direction away from the support shaft along the circumferential direction of the support shaft; wherein at least one of the connecting grooves is formed on the outer edge along the axial direction of the support shaft.

[0020] In one example of this invention, the outer edge has a radial dimension slightly smaller than the minor diameter of the thread connecting the support shaft to the locking nut.

[0021] In one example of this utility model, the connecting groove includes two grooves, which are symmetrically arranged along the circumferential direction of the support axis.

[0022] In one example of this utility model, the anti-detachment mechanism includes:

[0023] A fastener that connects a locking nut to an internal tooth assembly to limit the circumferential degree of freedom of the locking nut; wherein the locking nut has at least one first connecting hole, the internal tooth assembly has at least one second connecting hole corresponding to the at least one first connecting hole, and the fastener passes through the first connecting hole and the second connecting hole in sequence.

[0024] A flange portion is formed in the circumferential direction of the locking nut, extending along the axial direction of the locking nut and from one side of the locking nut toward the side opposite to the locking nut;

[0025] At least one connecting groove is provided on the support shaft;

[0026] Specifically, an external force is used to force the flange portion to deform radially so that the flange portion is embedded into the connecting groove of the support shaft.

[0027] Another objective of this invention is to provide a drive axle, including the locking structure for the drive axle wheel side as described above.

[0028] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. The drawings are merely illustrative of some embodiments of this utility model and are not intended to limit the scope of all embodiments of this utility model.

[0030] Figure 1 This is a schematic diagram of the locking structure for the drive axle wheel according to an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of a locking structure for the drive axle wheel according to an embodiment of the present invention;

[0032] Figure 3 This is a structural schematic diagram of the support shaft in one direction according to an embodiment of the present utility model;

[0033] Figure 4 This is a structural schematic diagram of the support shaft in another direction according to an embodiment of the present utility model;

[0034] Figure 5 This is a schematic diagram of the locking nut according to one direction of an embodiment of the present utility model;

[0035] Figure 6This is a structural schematic diagram of a locking nut according to an embodiment of the present invention from another direction.

[0036] List of reference numerals in the attached diagram:

[0037] Locking structure 100;

[0038] Support shaft 10;

[0039] Connection slot 11;

[0040] Outer edge 12;

[0041] External thread 13;

[0042] Wheel hub assembly 20;

[0043] Internal gear assembly 30;

[0044] Second connecting hole 31;

[0045] Locking nut 40;

[0046] First connecting hole 41;

[0047] Flange portion 42;

[0048] Anti-hair loss mechanism 50;

[0049] Fastener 51. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0051] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0052] According to a locking structure 100 for the drive axle wheel side according to the first aspect of this utility model, such as Figure 1 and Figure 2 As shown, it includes:

[0053] Support shaft 10;

[0054] The hub assembly 20 is pivotally mounted on the support shaft;

[0055] The internal gear assembly 30 is connected to the support shaft 10 by a key. The internal gear assembly 30 is located at the end of the support shaft 10 and is disposed close to the hub assembly 20; for example, the key is an involute spline.

[0056] The locking nut 40 is threadedly connected to the support shaft 10 and configured to limit the degree of freedom of the internal gear assembly 30 in the axial direction; for example, the support shaft 10 has an external thread 13 and the locking nut 40 has an internal thread, which engages with the external thread 13 on the support shaft 10.

[0057] It also includes an anti-slip mechanism 50, connected to the locking nut 40, configured to prevent the locking nut 40 from slipping off the support shaft 10.

[0058] By connecting the anti-loosening mechanism 50 to the locking nut 40, the locking nut 40 can be prevented from loosening and slipping during use. This can effectively prevent oil leakage from the wheel-side reducer oil seal, damage to gear components, and the wheel-side reducer from falling off, thus avoiding safety accidents. This greatly improves the safety and reliability of the locking structure 100, and the structure is simple and reliable.

[0059] In one example of this utility model, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the anti-detachment mechanism 50 includes: a fastener 51, which connects the locking nut 40 to the internal tooth assembly 30 to limit the circumferential degree of freedom of the locking nut 40; wherein, the locking nut 40 has at least one first connecting hole 41, and the internal tooth assembly 30 has at least one second connecting hole 31 corresponding to the at least one first connecting hole 41, and the fastener 51 passes through the first connecting hole 41 and the second connecting hole 31 in sequence;

[0060] In other words, by opening a first connecting hole 41 on the locking nut 40 and a second connecting hole 31 on the internal gear assembly 30, with the second connecting hole 31 corresponding to the first connecting hole 41, the fastener 51 connects the first connecting hole 41 and the second connecting hole 31, thereby fixing the locking nut 40 on the internal gear assembly 30, thus realizing the limitation of the degree of freedom of the locking nut 40 in the circumferential direction.

[0061] For example, fastener 51 is a screw, bolt, rivet, etc.

[0062] In one example of this utility model, the first connecting hole 41 is a groove structure, and the groove structure is formed on the edge of the locking nut 40;

[0063] For example, the groove structure is a semi-circular arc groove structure. Designing the first connecting hole 41 as a groove structure can reduce its own space occupation, facilitate the connection between the fastener 51 and the first connecting hole 41, and the semi-circular arc groove structure is easier to process.

[0064] Of course, this utility model is not limited to this. The first connecting hole 41 can also be a circular hole, a triangular hole, a square hole, etc.

[0065] In one example of this utility model, the first connecting hole 41 includes a plurality of holes and is spaced apart along the circumferential direction of the locking nut 40;

[0066] By setting multiple groove structures, multiple fasteners 51 can be connected simultaneously, thereby further improving the reliability of the connection between the lock nut 40 and the internal tooth assembly 30.

[0067] In one example of this utility model, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the anti-detachment mechanism 50 includes:

[0068] Flange 42 is formed in the circumferential direction of the locking nut 40, extends along the axial direction of the locking nut 40 and from one side of the locking nut 40 toward the side away from the locking nut 40;

[0069] At least one connecting groove 11 is formed on the support shaft 10;

[0070] Specifically, the flange 42 is forced to deform radially by external force so as to embed the flange 42 into the connecting groove 11 of the support shaft 10.

[0071] In short, a flange 42 is formed on one end of the locking nut 40. The flange 42 is coaxially arranged with the locking nut 40 and extends from one side of the locking nut 40 to the side away from the locking nut 40. By using an external tool to deform the flange 42 and embed it into the connecting groove 11, the locking nut 40 can also be prevented from loosening and falling off.

[0072] Preferably, the thickness of the flange portion 42 is 2 to 2.5 mm.

[0073] In one example of this utility model, an outer edge portion 12 is formed at the end of the support shaft 10 along the axial direction, and the outer edge portion 12 extends from the outer wall of the support shaft 10 toward a direction away from the support shaft 10 along the circumferential direction of the support shaft 10; wherein, at least one of the connecting grooves 11 is formed on the outer edge portion 12 along the axial direction of the support shaft 10.

[0074] By providing the outer edge portion 12, the length of the connecting groove 11 on the support shaft 10 can be extended, thereby increasing the volume of the connecting groove 11. Consequently, under the action of external force, the deformed flange portion 42 can be more reliably connected to the connecting groove 11, thereby improving the reliability of the locking nut 40 connection.

[0075] In one example of this utility model, the outer edge 12 is slightly smaller in the radial direction than the minor diameter of the thread connecting the support shaft 10 to the locking nut 40;

[0076] Since the depth of the connecting groove 11 on the outer edge 12 and the external thread 13 is the same, and the connecting groove 11 that is not fully embedded in the external thread 13 is affected by the thread, while the radial dimension of the outer edge 12 is small, the flange 42 can be more fully embedded in the connecting groove 11 of the outer edge 12, which greatly improves the anti-loosening reliability and safety of the locking nut 40.

[0077] In one example of this invention, the connecting groove 11 includes two grooves, which are symmetrically arranged along the circumferential direction of the support shaft 10. That is, by providing two symmetrical connecting grooves 11, the flange 42 can be embedded symmetrically into the connecting grooves 11, thereby making the locking nut 40 more evenly stressed during use and greatly improving the reliability of the locking nut 40. Of course, this invention is not limited to this; the connecting groove 11 may also include multiple grooves, which are equally spaced along the circumferential direction of the support shaft 10.

[0078] In one example of this utility model, such as Figures 1 to 6 As shown, the anti-detachment mechanism 50 includes:

[0079] Fastener 51 connects the locking nut 40 to the internal tooth assembly 30 to limit the circumferential degree of freedom of the locking nut 40; wherein, the locking nut 40 has at least one first connecting hole 41, and the internal tooth assembly 30 has at least one second connecting hole 31 corresponding to the at least one first connecting hole 41, and the fastener 51 passes through the first connecting hole 41 and the second connecting hole 31 in sequence;

[0080] Flange 42 is formed in the circumferential direction of the locking nut 40, extends along the axial direction of the locking nut 40 and from one side of the locking nut 40 toward the side away from the locking nut 40;

[0081] At least one connecting groove 11 is formed on the support shaft 10;

[0082] Specifically, the flange 42 is forced to deform radially by external force so as to embed the flange 42 into the connecting groove 11 of the support shaft 10.

[0083] By opening a first connecting hole 41 on the locking nut 40 and a second connecting hole 31 on the internal gear assembly 30, with the second connecting hole 31 corresponding to the first connecting hole 41, the fastener 51 connects the first connecting hole 41 and the second connecting hole 31, thereby fixing the locking nut 40 on the internal gear assembly 30, thereby realizing the limitation of the degree of freedom of the locking nut 40 in the circumferential direction;

[0084] A flange 42 is formed on one end of the locking nut 40. The flange 42 is coaxially arranged with the locking nut 40 and extends from one side of the locking nut 40 to the side away from the locking nut 40. By using an external tool to deform the flange 42 and embed it into the connecting groove 11, the locking nut 40 can also be prevented from loosening and falling off.

[0085] In other words, by using the above two methods in combination on the locking nut 40, the locking nut 40 can be more reliably prevented from loosening and slipping. This can effectively prevent oil leakage from the wheel-side reducer oil seal, damage to gear components, and the wheel-side reducer from falling off, thus avoiding safety accidents. This greatly improves the safety and reliability of the locking structure 100, and the structure is simple and reliable.

[0086] According to a second aspect of the present invention, a drive axle includes a locking structure 100 for the drive axle wheel side as described above.

[0087] By connecting the anti-loosening mechanism 50 to the locking nut 40, the drive axle can prevent the locking nut 40 from loosening and slipping during use. This can effectively prevent oil leakage from the wheel-side reducer oil seal, damage to gear components, and the wheel-side reducer from falling off, thus greatly improving the safety and reliability of the drive axle.

[0088] The foregoing description, with reference to preferred embodiments, details the exemplary implementation of the locking structure 100 for the drive axle wheel side and the drive axle proposed by this utility model. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of this utility model, and various combinations can be made to the various technical features and structures proposed by this utility model without exceeding the protection scope of this utility model, which is determined by the appended claims.

Claims

1. A locking structure for a drive axle wheel rim, comprising: a support shaft (10) ; a hub assembly (20) pivotably sleeved on the support shaft (10) ; an inner tooth assembly (30) keyed on the support shaft (10), the inner tooth assembly (30) being located at an end of the support shaft (10) and arranged close to the hub assembly (20) ; a locking nut (40) threaded on the support shaft (10) and configured to limit the axial freedom of the inner tooth assembly (30) ; characterized in that it further comprises: an anti-escape mechanism (50) connected to the locking nut (40) and configured to prevent the locking nut (40) from slipping off the support shaft (10) ; wherein the anti-escape mechanism (50) comprises a fastener (51) connecting the locking nut (40) with the inner tooth assembly (30) to limit the circumferential freedom of the locking nut (40) ; wherein at least one first connecting hole (41) is formed on the locking nut (40), and at least one second connecting hole (31) corresponding to the at least one first connecting hole (41) is formed on the inner tooth assembly (30), and the fastener (51) is sequentially arranged in the first connecting hole (41) and the second connecting hole (31). 2.The locking structure for a drive axle wheel rim according to claim 1, characterized in that: the first connecting hole (41) is a groove structure formed on the edge of the locking nut (40). 3.The locking structure for a drive axle wheel rim according to claim 1, characterized in that: the first connecting hole (41) comprises a plurality of holes and is arranged at intervals along the circumferential direction of the locking nut (40). 4.The locking structure for a drive axle wheel rim according to claim 1, characterized in that: the anti-escape mechanism (50) comprises: a flange portion (42) formed in the circumferential direction of the locking nut (40), extending along the axial direction of the locking nut (40) and away from the locking nut (40) on one side of the locking nut (40) ; at least one connecting groove (11) formed on the support shaft (10) ; wherein the flange portion (42) is forced to deform along the radial direction by an external force to embed the flange portion (42) into the connecting groove (11) of the support shaft (10). 5.The locking structure for a drive axle wheel rim according to claim 4, characterized in that: an outer edge portion (12) is formed on the end of the support shaft (10) along the axial direction, the outer edge portion (12) extending along the circumferential direction of the support shaft (10) from the outer wall of the support shaft (10) to a direction away from the support shaft (10) ; wherein at least one connecting groove (11) is formed on the outer edge portion (12) along the axial direction of the support shaft (10). 6.The locking structure for a drive axle wheel rim according to claim 5, characterized in that: The outer edge (12) is slightly smaller in the radial direction than the minor diameter of the thread connecting the support shaft (10) to the locking nut (40).

7. The locking structure for the drive axle wheel side according to claim 4, characterized in that, The connecting groove (11) includes two grooves, which are symmetrically arranged along the circumferential direction of the support shaft (10).

8. A drive axle characterized by Includes a locking structure (100) for the drive axle wheel side as described in any one of claims 1 to 7.

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