Axle end nut locking structure and axle assembly

Abstract

The utility model discloses a shaft end nut locking structure and an axle assembly. The shaft end nut locking structure comprises a shaft head, a bearing installed on the shaft head and a nut. An external thread surface is arranged on the peripheral surface of the outer end part of the shaft head, and a clamping groove is formed in the external thread surface; the nut is screwed on the external thread surface and is pressed on the outer end surface of the bearing inner ring; the nut is fixedly connected with a locking sleeve, the locking sleeve is provided with a sheet-shaped part arranged on the periphery of the clamping groove, and the sheet-shaped part can deform after being extruded from outside to inside so as to form a clamping part clamped in the clamping groove. The anti-loosening purpose can be achieved only through the nut and the locking sleeve, the number of parts is reduced, the axle end structure of an axle assembly is simplified, and the axle end structure of an axle is easy to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial vehicles, in particular to a shaft end nut locking structure and an axle assembly. Background Art

[0002] The axle ends of commercial vehicles usually need to be equipped with axle end nuts to prevent loosening. Specifically, locking washers, retaining springs and other components are usually set on the axle heads to cooperate with the axle end nuts. The locking washers and retaining springs are used to prevent the nut from rotating in the opposite direction to prevent the nut from loosening. Although this structure can achieve the purpose of preventing loosening, its structure is relatively complex and difficult to install. Utility Model Content

[0003] In view of the deficiencies in the prior art, the first object of the present utility model is to provide a shaft end nut locking structure and an axle, which can simplify the shaft end structure of the vehicle and are easy to assemble.

[0004] The second purpose of the utility model is to provide an axle assembly.

[0005] In order to achieve the above purpose one, the utility model adopts the following technical solution:

[0006] The shaft end nut locking structure comprises a shaft head, a bearing mounted on the shaft head, and a nut;

[0007] An external thread surface is provided on the peripheral surface of the outer end of the shaft head, and a clamping groove is provided on the external thread surface;

[0008] The nut is threaded on the external thread surface and pressed on the outer end surface of the inner ring of the bearing; a locking sleeve is fixedly connected to the nut, and the locking sleeve has a sheet portion arranged on the periphery of the slot, and the sheet portion can be deformed after being squeezed from the outside to the inside to form a clamping portion clamped in the slot.

[0009] The locking sleeve is detachably fixed to the nut.

[0010] The sheet portion is annular and sleeved on the outside of the shaft head.

[0011] The locking sleeve comprises a fixing ring which is pressed against the outer side of the nut and fixedly connected to the nut in a detachable manner.

[0012] A plurality of through holes are arranged on the fixing ring, and a plurality of bolt holes are arranged on the outer side surface of the nut. The plurality of bolt holes are arranged corresponding to the plurality of through holes one by one. A locking bolt is passed through each through hole. The locking bolt passes through the through hole and is screwed into the bolt hole corresponding to the through hole. The fixing ring is clamped between the outer side surface of the nut and the nut of the locking bolt.

[0013] A groove is provided on the outer surface of the nut, and the fixing ring is embedded in the groove.

[0014] The clamping portion is V-shaped, semicircular or square.

[0015] In order to achieve the above-mentioned second purpose, the utility model adopts the following technical solutions:

[0016] The axle assembly comprises the above-mentioned axle end nut locking structure.

[0017] The beneficial effects of the utility model are:

[0018] In the utility model, after the nut is tightened, a clamping part is formed on the sheet part and embedded in the clamping groove on the shaft head, and a limiting structure is formed by the clamping part and the clamping groove to limit the freedom of relative rotation between the nut and the shaft head, thereby achieving the purpose of preventing the nut from loosening, and because the clamping part can be deformed according to the shape of the clamping groove when being squeezed, the clamping part and the clamping groove are matched without clearance, thereby improving the precision of preventing loosening. In addition, the purpose of preventing loosening can be achieved only by the nut and the locking sleeve, reducing the number of parts, simplifying the shaft end structure of the axle assembly, and facilitating the assembly of the shaft end structure of the axle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the installation of the utility model;

[0021] Figure 3 It is a schematic diagram of the assembly process of the utility model. DETAILED DESCRIPTION

[0022] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0023] like Figure 1 , 2As shown, a shaft end nut locking structure of the utility model comprises a shaft head 10, a bearing 20, and a nut 30. The bearing 20 is mounted on the shaft head 10 and is used to adapt to the wheel hub located outside the shaft head 10 so that the wheel hub is pivotally mounted on the shaft head 10. An external thread surface 11 is provided on the peripheral surface of the outer end of the shaft head 10, and a downwardly concave groove 12 is provided on the external thread surface 11. The nut 30 is installed from the outer end of the shaft head 10 and is screwed on the external thread surface 11. A set of grooves 12 provided on the shaft head 10 is provided on the inner side of the nut 30. The gasket 60 is provided. After the nut 30 is tightened on the external threaded surface 11, the nut 30 squeezes the gasket 60 inward so that the gasket 60 is pressed against the outer end surface of the inner ring of the bearing 20, that is, the gasket 60 is clamped by the nut 30 and the outer end surface of the inner ring of the bearing 20, and then the nut 30 is pressed against the outer end surface of the inner ring of the bearing 20. Of course, in other embodiments, it is also possible that there is no need to configure the gasket 60, and the nut 30 is directly tightened on the external threaded surface 11, and then the inner side surface 302 of the nut 30 is pressed against the outer end surface of the inner ring of the bearing 20. A locking sleeve 40 is fixedly connected to the nut 30, and a sheet-like portion 42 is provided on the locking sleeve 40. At least a part of the sheet-like portion 42 is placed on the periphery of the slot 12. A clamping portion 43 is formed on the sheet-like portion 42, and the clamping portion 43 is embedded in the slot 12. The clamping portion 43 cooperates with the slot 12 to form a limit component to limit the freedom of rotation of the nut 30 relative to the shaft head 10. The clamping portion 43 is formed by extruding and deforming the sheet-like portion 42 from the outside to the inside, that is, by extruding the sheet-like portion 42, the sheet-like portion 42 is deformed toward the slot 12, and the deformed part forms the clamping portion 43 that is clamped into the slot 12, so that the two sides of the clamping portion 43 are pressed against the two side edges of the slot 12, and the two sides of the clamping portion 43 will respectively fit with the two sides of the slot 12 without clearance.

[0024] See also Figure 1 , 2 Combined with Figure 3 As shown, after fixing the locking sleeve 40 on the nut 30, the nut 30 is screwed onto the external threaded surface 11, and the nut 30 is fully tightened so that the nut 30 fully presses the outer end surface of the inner ring of the bearing 20, and then the part of the sheet portion 42 located outside the slot 12 is extruded into the slot 12 by an extrusion die to form a clamping portion 43 embedded in the slot 12.

[0025] In the utility model, after the nut is tightened, a clamping part is formed on the sheet part and embedded in the clamping groove on the shaft head, and a limiting structure is formed by the clamping part and the clamping groove to limit the freedom of relative rotation between the nut and the shaft head, thereby achieving the purpose of preventing the nut from loosening, and because the clamping part can be deformed according to the shape of the clamping groove when being squeezed, the clamping part and the clamping groove are matched without clearance, thereby improving the precision of preventing loosening. In addition, the purpose of preventing loosening can be achieved only by the nut and the locking sleeve, reducing the number of parts, simplifying the shaft end structure of the axle assembly, and facilitating the assembly of the shaft end structure of the axle.

[0026] In the present invention, the locking sleeve 40 can be fixed on the nut 30 in a detachable manner. In this way, when the shaft end of the axle needs to be maintained, the locking sleeve 40 can be removed from the nut 30, and then the nut 30 can be loosened from the external thread surface 11, and then the shaft end of the axle assembly can be removed. The above-mentioned sheet portion 42 is annular, and the sheet portion 42 is sleeved on the outside of the shaft head 10, that is, the sheet portion 42 is arranged around the shaft head 10 in a circle. When the nut 30 is tightened, any position of the sheet portion 42 can be extruded to form a clamping portion 43. In other embodiments, the sheet portion 42 can also only cover a part of the shaft head 10 in the circumference. In short, after the nut 30 rotates, a part of it can eventually cover the periphery of the slot 12 and be suitable for forming a clamping portion 43 after extrusion.

[0027] In order to facilitate the fixed connection between the locking sleeve 40 and the nut 30, the locking sleeve 40 includes a fixing ring 41, the fixing ring 41 is attached to the outer side 301 of the nut 40, and the fixing ring 41 is fixed to the nut 30 in a detachable manner, and the sheet portion 42 can be formed by bending the fixing ring 41. A plurality of through holes 44 are provided on the fixing ring 41, and a plurality of bolt holes 32 are provided on the outer side 301 of the nut 30. The plurality of bolt holes 32 are arranged one by one with the plurality of through holes 44. A locking bolt 50 is passed through each through hole 44 from outside to inside, and the locking bolt 50 passes through the through hole 44 from outside to inside and is screwed on the bolt hole 32 corresponding to the through hole 44. The locking bolt 50 is tightened, and the fixing ring 41 is clamped and fixed by the nut of the locking bolt 50 and the outer side 301 of the nut 30, and then the locking sleeve 40 is fixed on the nut 30. The sheet portion 42 is formed by bending the inner edge of the fixing ring 41. In order to reduce the axial dimension of the assembly formed by the locking sleeve 40 and the nut 30 and to position the locking sleeve 40 and the nut 30 for mutual installation, a groove 31 is provided on the outer side surface 301 of the nut 30, and a fixing ring 41 of the locking sleeve 40 is embedded in the groove 31.

[0028] In the present invention, the clamping portion 43 is formed by extrusion of a V-shaped extrusion die, thereby forming a V-shaped clamping portion 43 on the sheet portion 42; in other embodiments, the clamping portion 43 may also be semicircular or square, which is formed by extrusion of an extrusion die of a corresponding shape.

[0029] The axle assembly of the utility model includes the above-mentioned shaft end nut locking structure, and other structures of the axle assembly are the same as those in the prior art and will not be described in detail here.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. The shaft end nut locking structure is characterized by: It includes a shaft head, a bearing mounted on the shaft head, and a nut; An external thread surface is provided on the peripheral surface of the outer end of the shaft head, and a clamping groove is provided on the external thread surface; The nut is threaded on the external thread surface and pressed on the outer end surface of the inner ring of the bearing; a locking sleeve is fixedly connected to the nut, and the locking sleeve has a sheet portion arranged on the periphery of the slot, and the sheet portion can be deformed after being squeezed from the outside to the inside to form a clamping portion clamped in the slot.

2. The shaft end nut locking structure according to claim 1, characterized in that: The locking sleeve is detachably fixed to the nut.

3. The shaft end nut locking structure according to claim 2, characterized in that: The sheet portion is annular and sleeved on the outside of the shaft head.

4. The shaft end nut locking structure according to claim 3, characterized in that: The locking sleeve comprises a fixing ring which is pressed against the outer side of the nut and fixedly connected to the nut in a detachable manner.

5. The shaft end nut locking structure according to claim 4, characterized in that: A plurality of through holes are arranged on the fixing ring, and a plurality of bolt holes are arranged on the outer side surface of the nut. The plurality of bolt holes are arranged corresponding to the plurality of through holes one by one. A locking bolt is passed through each through hole. The locking bolt passes through the through hole and is screwed into the bolt hole corresponding to the through hole. The fixing ring is clamped between the outer side surface of the nut and the nut of the locking bolt.

6. The shaft end nut locking structure according to claim 5, characterized in that: A groove is arranged on the outer side surface of the nut, and the fixing ring is embedded in the groove.

7. The shaft end nut locking structure according to claim 1, characterized in that: The clamping portion is V-shaped, semicircular or square.

8. Axle assembly, characterized in that: It includes the shaft end nut locking structure as described in any one of claims 1-7.

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