CN219452703U - Shaft end locking structure and axle assembly - Google Patents
Shaft end locking structure and axle assembly Download PDFInfo
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- CN219452703U CN219452703U CN202320530779.2U CN202320530779U CN219452703U CN 219452703 U CN219452703 U CN 219452703U CN 202320530779 U CN202320530779 U CN 202320530779U CN 219452703 U CN219452703 U CN 219452703U
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- head nut
- spindle head
- annular groove
- shaft
- nut
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The utility model discloses a shaft end locking structure and a shaft assembly, wherein the shaft end locking structure comprises a shaft, a hub, an inner bearing, an outer bearing, a shaft head nut and a pressing piece; the hub is arranged on the axle through an inner bearing and an outer bearing; the axle is provided with external threads, the spindle head nut is provided with internal threads, and the inner side end surface of the spindle head nut is pressed on the outer side end surface of the inner ring of the outer bearing; the spindle head nut is provided with an annular groove, the inner edge of the annular groove extends to the inner thread and forms a notch, the notch divides the inner thread of the spindle head nut into two sections which are mutually disconnected, and a deformation part is formed on the spindle head nut between the outer end face of the spindle head nut and the annular groove; the spindle head nut is provided with a connecting hole, one end of the connecting hole extends to the outer end face of the spindle head nut, and the other end of the connecting hole is communicated with the annular groove; the compressing piece is in the connecting hole in a threaded manner, and the outer side end of the compressing piece protrudes out of the outer side end face of the spindle head nut to form an operation part. The utility model has simple structure and easy assembly.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a shaft end locking structure and an axle assembly.
Background
The axle assembly of the trailer generally comprises an axle and a hub, wherein the hub is sleeved on the axle by the end part of the axle, in order to ensure that the hub can flexibly rotate relative to the axle, the hub is generally arranged on the axle by adopting an inner bearing and an outer bearing, the inner bearing is clamped by a step surface on the axle and a bearing installation position on the hub, the outer ring of the outer bearing is clamped at the bearing installation position on the hub, a locking structure is required to be arranged at the end part of the axle to press the inner ring of the outer bearing, so that the outer bearing is prevented from moving, the locking mechanism generally comprises a spindle head nut, the spindle head nut is screwed on an external thread position on the axle, and the spindle head nut is screwed down to press the inner ring of the outer bearing inwards; however, in the use process of the vehicle, the spindle head nut is usually loosened, so that a special structure needs to be configured on the spindle head nut to prevent the spindle head nut from reversely rotating, so that the self-locking of the spindle head nut is realized. In the existing shaft end locking structure with a self-locking function, a locking washer is required to be configured for a shaft head nut, and a clamping piece for clamping the shaft head nut and the locking washer is required to be arranged together, and in addition, a key slot matched with the locking washer is required to be arranged at an external thread of the outer part of the shaft, so that the structure is complex, and the assembly process is complex.
Disclosure of Invention
The utility model aims at providing an axle end locking structure which is simple in structure and easy to assemble.
The utility model provides an axle assembly.
In order to achieve the first purpose, the utility model adopts the following technical scheme:
the shaft end locking structure comprises an axle, a hub, an inner bearing, an outer bearing, a shaft head nut and a compacting piece;
the hub is arranged on the axle through an inner bearing and an outer bearing;
the axle shaft is provided with external threads at the part penetrated out by the external bearing, the axle head nut is sleeved on the axle shaft, the inner ring of the axle head nut is provided with internal threads matched with the external threads, and the inner side end surface of the axle head nut is pressed on the outer side end surface of the inner ring of the external bearing;
the spindle head nut is provided with an annular groove extending along the circumferential direction of the spindle head nut, the inner edge of the annular groove extends to the inner thread and forms a notch, the notch divides the inner thread of the spindle head nut into two sections which are mutually disconnected, and a deformation part is formed on the spindle head nut between the outer end face of the spindle head nut and the annular groove;
the spindle head nut is provided with a connecting hole, one end of the connecting hole extends to the outer end face of the spindle head nut, and the other end of the connecting hole is communicated with the annular groove; the compressing piece is in the connecting hole in a threaded mode, the outer side end of the compressing piece protrudes out of the outer side end face of the spindle head nut and forms an operation portion, and the operation portion is used for driving the compressing piece to rotate so that the compressing piece extrudes the deformation portion along the axial direction of the spindle head nut.
The pressing piece is a bolt, and the operating part is a nut of the bolt.
The connecting hole extends to the outer side wall of the annular groove from the outer side end face of the spindle nose nut, and the inner side end of the bolt abuts against the inner side wall of the annular groove.
The other end of the connecting hole penetrates through the annular groove and extends from the inner side wall of the annular groove to the inner side end face of the spindle head nut, the bolt is in threaded connection with the part of the connecting hole located at the inner side of the annular groove, and the inner side face of the nut abuts against the outer side end face of the spindle head nut.
The thickness of the deformation part is smaller than the interval between the inner side wall of the annular groove and the inner side end face of the spindle head nut.
The thickness of the deformation part is a, and the distance between the inner side wall of the annular groove and the inner side end face of the spindle head nut is 3-7 times of a.
The spindle head nut is provided with more than two connecting holes which are arrayed around the circumference of the central axis of the spindle head nut, and each connecting hole is internally and spirally connected with a compressing piece.
In order to achieve the second purpose, the utility model adopts the following technical scheme:
the axle assembly comprises the axle end locking structure.
The utility model has the beneficial effects that:
compared with the existing shaft end locking structure, the shaft end locking structure only needs to be provided with the shaft head nut and the pressing piece screwed on the shaft head nut, a gasket and a clamping piece for locking the gasket and the shaft head nut are not required to be arranged, structures such as a clamping groove matched with the clamping piece at the outer side of the periphery of the shaft head nut are not required, and a key groove matched with the locking gasket is not required to be arranged at the external thread of the shaft, so that the shaft end structure of the shaft is simplified; meanwhile, only the spindle head nut and the pressing piece are needed to be screwed down during assembly, so that the spindle head structure is easy to assemble.
Drawings
FIG. 1 is a schematic view of an axial end locking arrangement of the present utility model;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the construction of the spindle nose nut of FIG. 1;
FIG. 4 is an enlarged view at A in FIG. 1;
fig. 5 is a schematic view of another shaft end locking arrangement of the present utility model.
Description of the embodiments
The utility model is further described below with reference to the drawings and detailed description:
as shown in fig. 1, 2, 3 and 4, an axle end locking structure of the present utility model comprises an axle 10, a hub 20, an inner bearing 21, an outer bearing 22, a spindle nose nut 30 and a pressing member; the cross section of at least one section of the axle 10 extending from the end part to the middle position is circular, the hub 20 is sleeved outside the part of the axle 10 with the circular cross section and is pivoted on the axle through the inner bearing 21 and the outer bearing 22, wherein the inner bearing 21 and the outer bearing 22 are staggered by a certain distance along the axial direction of the axle 10, and the inner bearing 21 and the outer bearing 22 are positioned at two end parts of the hub 20; the part of the axle 10 penetrated by the outer bearing 22 is provided with a section of external thread 11, the external thread 11 extends to the position of the outer bearing 22 from the end part of the axle 10, the spindle nose nut 30 is sleeved on the axle 10 from the end part of the axle 10, the inner ring of the spindle nose nut 30 is provided with internal threads matched with the external thread 11, the spindle nose nut 30 is screwed on the axle 10 by utilizing the matching of the internal threads of the spindle nose nut 30 and the external threads of the axle 10, and after the spindle nose nut 30 is screwed, the inner end face 302 of the spindle nose nut 30 is pressed on the outer end face of the inner ring of the outer bearing 22. The spindle head nut 30 is provided with an annular groove 31 extending along the circumferential direction thereof, the inner edge of the annular groove 31 extends to the inner thread of the spindle head nut 30 and forms a notch 311, the notch 311 divides the inner thread of the spindle head nut 30 into two sections which are disconnected with each other, the outer edge of the annular groove 31 is separated from the outer side surface of the spindle head nut 30, namely, the wall thickness of the spindle head nut 30 where the annular groove 31 is arranged has a relatively smaller wall thickness than the wall thickness of other positions, so that a deformation part 33 is formed on the spindle head nut 30 between the outer side end surface 301 of the spindle head nut 30 and the annular groove 31, a connecting hole 32 is arranged on the spindle head nut 30, and one end of the connecting hole 32 extends outwards to the outer side end surface 301 of the spindle head nut 30 and the other end extends to the outer side wall 312 of the annular groove 31 to be communicated with the annular groove 31. The compressing element is screwed in the connecting hole 32, the compressing element is preferably a bolt 40, the bolt 40 penetrates into the connecting hole 32 from outside to inside, a nut 42 of the bolt 40 protrudes out of an outer end face 301 of the spindle head nut 30 to form an operation part, the nut 42 of the bolt 40 is rotated, an inner side end 401 of a screw 41 of the bolt 40 is tightly pressed against an inner side wall 313 of the annular groove 31, when the nut 42 of the bolt 40 is continuously rotated, the screw 41 of the bolt 40 is matched with a thread on the threaded hole 32, the screw 41 reversely presses the deformation part 33, the deformation part 33 is slightly deformed outwards, after the deformation part 33 is deformed, the inner thread on the spindle head nut 30 is slightly moved outwards at the inner edge of the deformation part 33, a thread gap between the inner thread of the inner edge of the deformation part 33 and an outer thread of the spindle 10 is eliminated, and the threads of the inner edge of the deformation part and the outer thread are mutually compressed, so that the spindle head nut 30 is prevented from reversely rotating, and the purpose of self-locking of the spindle head 30 is achieved.
It should be noted that, the pressing member screwed into the connecting hole 32 is not necessarily the bolt 40, but may be another member screwed into the connecting hole 32, after the pressing member is screwed into the connecting hole 32, the pressing member is rotated by rotating the operating portion of the pressing member protruding from the outer end face 301 of the spindle head nut 30, so that the operating portion drives the pressing member to rotate, and the pressing member is matched with the spindle head nut 30, so that the deformation portion 33 formed on the outer side of the annular groove 31 on the spindle head nut 30 applies an axial extrusion force, so that a section of internal thread on the deformation portion generates a tiny axial displacement, and the section of internal thread with the tiny displacement is mutually pressed by the matching portion of the external thread 11 on the axle 10, thereby preventing the spindle head nut 30 from reversely rotating. Compared with the existing shaft end locking structure, the shaft end locking structure only needs to be provided with the shaft head nut and the pressing piece screwed on the shaft head nut, a gasket and a clamping piece for locking the gasket and the shaft head nut are not required to be arranged, structures such as a clamping groove matched with the clamping piece at the outer side of the periphery of the shaft head nut are not required, and a key groove matched with the locking gasket is not required to be arranged at the external thread of the shaft, so that the shaft end structure of the shaft is simplified; meanwhile, only the spindle head nut and the pressing piece are needed to be screwed down during assembly, so that the spindle head structure is easy to assemble.
In the utility model, the thickness of the deformation part 33 is smaller than the interval between the inner side wall 313 of the annular groove 31 and the inner side end face 302 of the spindle head nut 30, namely, the annular groove 31 divides the spindle head nut 30 into an inner part and an outer part, and the thickness of the outer side part serving as the deformation part 33 is smaller than the thickness of the inner side part of the spindle head nut 30 in threaded connection with the external thread 11; preferably, the thickness of the deformation portion 33 is a, and the distance between the inner sidewall 313 of the annular groove 31 and the inner end face 302 of the spindle head nut 30 is 3-7 times a, and the specific multiple relationship is preferably set according to the axial dimension of the spindle head nut 30 and the pitch of the internal thread on the spindle head nut 30, so that the deformation portion 33 is easy to deform on the basis of ensuring good screwing of the spindle head nut 30 and the external thread 11.
Two connecting holes 32 are arranged on the spindle head nut 30, the two connecting holes 32 are oppositely arranged, namely, the two connecting holes 32 are uniformly distributed in the circumferential direction of the spindle head nut 30, and each connecting hole 32 is internally and spirally connected with a pressing piece. Of course, more connecting holes 32 may be provided on the spindle head nut 30, and a plurality of connecting holes 32 may be arranged in a circumferential array along the central axis of the spindle head nut 30, where each connecting hole 32 is screwed with a pressing member.
Referring to fig. 5, another shaft end locking structure of the present utility model is different from the structures shown in fig. 1, 2, 3 and 4, in that the connecting hole is configured such that one end extends to the outer end surface of the shaft end nut, the other end is communicated with the annular groove, the inner side wall of the annular groove continues to extend toward the inner end surface of the shaft end nut, after the bolt penetrates into the connecting hole, the inner end of the bolt penetrates through the annular groove, the nut of the bolt is screwed, the inner side surface of the nut of the bolt abuts against the outer end surface of the shaft end nut, then an inward extrusion force is applied to the deformation portion, and under the extrusion of the nut, the inner edge in the deformation portion slightly moves toward the inner side, and then the screw teeth on the deformation portion and the screw teeth of the external screw threads are mutually pressed and meshed, so as to realize self-locking of the shaft end nut.
The axle assembly of the present utility model includes the axle end locking structure described above, and other structures of the axle assembly are the same as those of the prior art and are not described in detail herein.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model in essence.
Claims (8)
1. The shaft end locking structure is characterized by comprising an axle, a hub, an inner bearing, an outer bearing, a shaft head nut and a compressing piece;
the hub is arranged on the axle through an inner bearing and an outer bearing;
the axle shaft is provided with external threads at the part penetrated out by the external bearing, the axle head nut is sleeved on the axle shaft, the inner ring of the axle head nut is provided with internal threads matched with the external threads, and the inner side end surface of the axle head nut is pressed on the outer side end surface of the inner ring of the external bearing;
the spindle head nut is provided with an annular groove extending along the circumferential direction of the spindle head nut, the inner edge of the annular groove extends to the inner thread and forms a notch, the notch divides the inner thread of the spindle head nut into two sections which are mutually disconnected, and a deformation part is formed on the spindle head nut between the outer end face of the spindle head nut and the annular groove;
the spindle head nut is provided with a connecting hole, one end of the connecting hole extends to the outer end face of the spindle head nut, and the other end of the connecting hole is communicated with the annular groove; the compressing piece is in the connecting hole in a threaded mode, the outer side end of the compressing piece protrudes out of the outer side end face of the spindle head nut and forms an operation portion, and the operation portion is used for driving the compressing piece to rotate so that the compressing piece extrudes the deformation portion along the axial direction of the spindle head nut.
2. The shaft end locking structure of claim 1, wherein the pressing member is a bolt and the operating portion is a nut of the bolt.
3. The shaft end locking structure according to claim 2, wherein the connecting hole extends from an outer end face of the spindle nose nut to an outer side wall of the annular groove, and an inner end of the bolt abuts against an inner side wall of the annular groove.
4. The shaft end locking structure according to claim 2, wherein the other end of the coupling hole passes through the annular groove and extends from the inner side wall of the annular groove toward the inner side end face of the spindle head nut, the bolt is screwed to the portion of the coupling hole located inside the annular groove, and the inner side face of the nut abuts against the outer side end face of the spindle head nut.
5. The shaft end locking structure of claim 1, wherein the thickness of the deformation portion is smaller than the distance between the inner side wall of the annular groove and the inner side end face of the spindle head nut.
6. The shaft end locking structure according to claim 5, wherein the thickness of the deformation portion is a, and the distance between the inner side wall of the annular groove and the inner side end face of the spindle head nut is 3 to 7 times the distance a.
7. The shaft end locking structure according to claim 1, wherein the shaft head nut is provided with more than two connecting holes, the more than two connecting holes are circumferentially arrayed around the central axis of the shaft head nut, and each connecting hole is internally and spirally connected with a pressing piece.
8. Axle assembly, characterized in that it comprises an axle end locking arrangement according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320530779.2U CN219452703U (en) | 2023-03-18 | 2023-03-18 | Shaft end locking structure and axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320530779.2U CN219452703U (en) | 2023-03-18 | 2023-03-18 | Shaft end locking structure and axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219452703U true CN219452703U (en) | 2023-08-01 |
Family
ID=87421548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320530779.2U Active CN219452703U (en) | 2023-03-18 | 2023-03-18 | Shaft end locking structure and axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219452703U (en) |
-
2023
- 2023-03-18 CN CN202320530779.2U patent/CN219452703U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |