阅读说明：本技术 用于防止重型汽车轮毂螺母转动的结构 (Structure for preventing nut of hub of heavy-duty vehicle from rotating ) 是由 张永 夏良山 何吉刚 于 2021-09-06 设计创作，主要内容包括：本发明提出了一种用于防止重型汽车轮毂螺母转动的结构,包括齿圈支架、轮毂螺母和半轴套管；本发明的有益技术效果是：提出了一种用于防止重型汽车轮毂螺母转动的结构,相比于现有技术,本发明的防松结构设置在齿圈支架和轮毂螺母之间,不涉及半轴套管和轮毂螺母之间的螺纹区域,在保证轮毂螺母防松的同时,可以有效保证半轴套管和轮毂螺母的螺纹连接强度。(The invention provides a structure for preventing a nut of an automobile hub of a heavy duty vehicle from rotating, which comprises a gear ring bracket, a hub nut and a half-shaft sleeve; the beneficial technical effects of the invention are as follows: compared with the prior art, the anti-loosening structure is arranged between the gear ring support and the hub nut, a threaded area between the axle shaft sleeve and the hub nut is not involved, and the threaded connection strength of the axle shaft sleeve and the hub nut can be effectively guaranteed while the anti-loosening of the hub nut is guaranteed.)

1. The utility model provides a be used for preventing automobile wheel hub nut pivoted structure which characterized in that: the gear ring support comprises a gear ring support (1), a hub nut (2) and a half-shaft sleeve (3);

the outer wall of the gear ring support (1) is provided with a plurality of threaded holes (1-1), and the threaded holes (1-1) are uniformly distributed along the circumferential direction of the gear ring support (1);

the outer peripheral surface of the hub nut (2) is provided with a plurality of limiting grooves (2-1), the limiting grooves (2-1) are uniformly distributed along the circumferential direction of the hub nut (2), and the number of the limiting grooves (2-1) is larger than that of the threaded holes (1-1); the outline of the threaded hole (1-1) is smaller than the outline of the limiting groove (2-1);

the gear ring support (1) is sleeved outside the semi-shaft sleeve (3), the thread section of the outer end of the semi-shaft sleeve (3) is exposed outside the gear ring support (1), the hub nut (2) is in threaded connection with the thread section on the semi-shaft sleeve (3), the inner end face of the hub nut (2) is in contact with the outer wall of the gear ring support (1), the annular area formed by the threaded holes (1-1) is marked as a first annular area, the annular area formed by the limiting grooves (2-1) is marked as a second annular area, the first annular area and the second annular area are concentric, the inner diameter of the first annular area is larger than that of the second annular area, and the inner diameter of the first annular area is smaller than that of the second annular area; after the hub nut (2) is installed in place, a part of threaded holes (1-1) are completely exposed, the completely exposed threaded holes (1-1) are marked as operation holes, check bolts (4) are arranged in the operation holes, the check bolts (4) are cylindrical-head hexagon socket head bolts, and the contour of the bolt heads of the check bolts (4) is matched with the contour of the limiting grooves (2-1).

Technical Field

The invention relates to a wheel hub nut anti-rotation technology, in particular to a structure for preventing a wheel hub nut of a heavy-duty vehicle from rotating.

Background

Take doublestage drive axle of ring gear support, in order to prevent that the hub nut is rotatory not hard up in the use, set up anti-rotating structure usually on axle sleeve and hub nut, common anti-rotating structure has two kinds:

1) as shown in fig. 4 and 5, a locking groove is arranged on the end surface of the half-shaft sleeve, an annular groove is arranged on the inner end surface of the hub nut, an internal thread matched with the thread section at the outer end of the half-shaft sleeve is arranged in the annular groove, meanwhile, a flat hole (the flat hole radially penetrates through the annular groove, and a structural body outside the flat hole on the hub nut forms a thin edge) is arranged on the side wall of the hub nut, and a locking threaded hole (the locking threaded hole axially penetrates through the hub nut and is communicated with the flat hole and the annular groove) is arranged on the end surface of the hub nut; during installation, firstly, a hub nut is screwed on the threaded section of the half-shaft sleeve, then a locking bolt is arranged in a locking threaded hole, a thin edge on the hub nut is gradually extruded and deformed along with the screwing of the locking bolt, an internal thread of the hub nut is also deformed along with the deformation and is in close contact with the thread of the threaded section of the half-shaft sleeve, the thread friction between the hub nut and the half-shaft sleeve is enhanced, meanwhile, the inner end of the locking bolt also extends into a locking groove on the end face of the half-shaft sleeve, and the rotation prevention of the hub nut is realized through the blocking effect of the locking bolt and the locking groove;

2) as shown in fig. 6 and 7, the outer wall of the outer end of the half-axle sleeve is provided with a lock groove, when the half-axle sleeve is installed, an annular locking plate is sleeved outside the half-axle sleeve, the inner hole wall of the annular locking plate is provided with a boss clamped in the lock groove, the outer end face of the annular locking plate is provided with a connecting bulge extending outwards, then the hub nut is screwed on the half-axle sleeve, then the connecting bulge is fixed with the hub nut (welding or bolt connection can be adopted), and the hub nut is prevented from rotating by the blocking action of the lock groove and the boss;

for the first anti-loosening structure, the groove-shaped structure exists on the hub nut, the integrity of the hub nut thread can be damaged, meanwhile, the lock groove can also damage the integrity of the semi-shaft sleeve external thread, so that the thread connection strength is reduced, and for the second anti-loosening structure, the lock groove can damage the integrity of the semi-shaft sleeve external thread; in addition, two kinds of anti-loosening structure need process the screw thread region when processing, produce the burr (especially first anti-loosening structure, its hub nut structure is complicated) easily during processing, and are required highly to process.

Disclosure of Invention

Aiming at the problems in the background art, the invention provides a structure for preventing a hub nut of a heavy-duty automobile from rotating, which is innovative in that: the gear ring support comprises a gear ring support, a hub nut and a half-shaft sleeve;

the outer wall of the gear ring support is provided with a plurality of threaded holes which are uniformly distributed along the circumferential direction of the gear ring support;

the outer peripheral surface of the hub nut is provided with a plurality of limiting grooves, the limiting grooves are uniformly distributed along the circumferential direction of the hub nut, and the number of the limiting grooves is larger than that of the threaded holes; the outline of the threaded hole is smaller than that of the limiting groove;

the gear ring support is sleeved outside the half shaft sleeve, a thread section at the outer end of the half shaft sleeve is exposed outside the gear ring support, a hub nut is in threaded connection with the thread section on the half shaft sleeve, the inner end face of the hub nut is in contact with the outer wall of the gear ring support, an annular area formed by a plurality of thread holes is marked as a first annular area, an annular area formed by a plurality of limiting grooves is marked as a second annular area, the first annular area and the second annular area are concentric, the inner diameter of the first annular area is larger than that of the second annular area, and the inner diameter of the first annular area is smaller than that of the second annular area; after the hub nut is installed in place, one part of threaded holes are completely exposed (the other threaded holes are partially shielded by the solid part of the hub nut), the completely exposed threaded holes are marked as operation holes, check bolts are arranged in the operation holes and are cylindrical inner hexagon bolts, and the outlines of the bolt heads of the check bolts are matched with the outlines of the limiting grooves.

The principle of the invention is as follows: the anti-rotation structure is arranged between a gear ring support (the gear ring support is an existing structure on a two-stage driving axle) and the hub nut, so that the anti-rotation structure can be arranged without involving a threaded area, the integrity of threaded connection between the axle sleeve and the hub nut is ensured, and the threaded connection strength is improved; particularly, after the hub nut is installed in place, due to the fact that the number of the plurality of threaded holes, the plurality of limiting grooves and the number of the limiting grooves are larger than the number of the threaded holes, some threaded holes are exposed completely, the anti-loosening bolts are arranged in the threaded holes which are exposed completely, the bolt heads of the anti-loosening bolts can form a blocking effect on the limiting grooves, and finally the hub nut can be prevented from rotating.

The beneficial technical effects of the invention are as follows: compared with the prior art, the anti-loosening structure is arranged between the gear ring support and the hub nut, a threaded area between the axle shaft sleeve and the hub nut is not involved, and the threaded connection strength of the axle shaft sleeve and the hub nut can be effectively guaranteed while the anti-loosening of the hub nut is guaranteed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

enlarged structure of the anti-loose bolt in fig. 2 and 1;

FIG. 3 is a schematic end view of the present invention;

FIG. 4 is a schematic diagram of the prior art;

the hub nut in fig. 5 and 7 is enlarged;

FIG. 6 is a schematic diagram of a second prior art;

FIG. 7, schematic diagram three of the prior art;

the names corresponding to each mark in the figure are respectively: the gear ring support comprises a gear ring support 1, threaded holes 1-1, a hub nut 2, a limiting groove 2-1, a half shaft sleeve 3, a locking groove 3-1, a locking bolt 4, a locking bolt 5, a flat hole 6, a connecting bulge 7 and a boss 8.

Detailed Description

The utility model provides a be used for preventing heavy automobile wheel hub nut pivoted structure, its innovation lies in: the hub gear comprises a gear ring bracket 1, a hub nut 2 and a half-shaft sleeve 3;

the outer wall of the gear ring support 1 is provided with a plurality of threaded holes 1-1, and the threaded holes 1-1 are uniformly distributed along the circumferential direction of the gear ring support 1;

the outer peripheral surface of the hub nut 2 is provided with a plurality of limiting grooves 2-1, the plurality of limiting grooves 2-1 are uniformly distributed along the circumferential direction of the hub nut 2, and the number of the limiting grooves 2-1 is larger than that of the threaded holes 1-1; the outline of the threaded hole 1-1 is smaller than the outline of the limiting groove 2-1;

the gear ring support 1 is sleeved outside the semi-shaft sleeve 3, a threaded section at the outer end of the semi-shaft sleeve 3 is exposed outside the gear ring support 1, the hub nut 2 is in threaded connection with the threaded section on the semi-shaft sleeve 3, the inner end face of the hub nut 2 is in contact with the outer wall of the gear ring support 1, an annular area formed by the threaded holes 1-1 is marked as a first annular area, an annular area formed by the limiting grooves 2-1 is marked as a second annular area, the first annular area and the second annular area are concentric, the inner diameter of the first annular area is larger than that of the second annular area, and the inner diameter of the first annular area is smaller than that of the second annular area; after the hub nut 2 is installed in place, a part of the threaded holes 1-1 are completely exposed, the completely exposed threaded holes 1-1 are marked as operation holes, the operation holes are internally provided with the check bolts 4, the check bolts 4 are cylindrical head hexagon socket head bolts, and the bolt head profiles of the check bolts 4 are matched with the profiles of the limiting grooves 2-1.