Bearing ring inner ring fixing structure

Abstract

The utility model relates to the field of bearings, discloses a fixing structure for an inner ring of a bearing ring, and solves the problem that a lug is arranged on the outer side wall of the inner ring and is embedded in a groove of an outer ring sleeve, so that connection is carried out in order to prevent the lug from moving and generate larger friction force in an interference fit mode. The utility model relates to a bearing ring inner ring fixing structure, in particular to a bearing ring inner ring fixing structure which solves the problem that when the surface of a bearing inner ring needs to be replaced due to serious abrasion or pits, the bearing inner ring is very difficult to disassemble due to large friction force, and comprises an outer ring, bearing balls arranged on the inner side of the outer ring, an outer ring sleeve arranged on the inner side of the bearing balls and an inner ring arranged on the inner side of the outer ring sleeve. The inner ring can be limited through the limiting mechanism and the rotating limiting mechanism, the inner ring is prevented from shaking, and compared with the prior art, larger friction force does not need to be used during embedding, so that the purpose of convenient disassembly is achieved.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to a bearing sleeve inner ring fixing structure. Background Art

[0002] The bearing ring inner ring fixing structure refers to a fixing structure inside the bearing, which is usually used to fix the inner and outer rings of the bearing. The structure consists of three parts: the inner ring, the outer ring and the outer ring sleeve. The outer ring sleeve has a groove inside it, and the inner ring is clamped in the groove to fix the inner ring.

[0003] The patent with publication number CN210003690U discloses a bearing ring inner ring fixing structure, including an outer ring, the inner ring of the outer ring is slidably connected with bearing balls on all sides, the inner side of the bearing balls is slidably connected with an outer ring sleeve, and the inner cavity of the outer ring sleeve is provided with an inner ring. The existing bearing ring inner ring fixing structure adopts a groove provided on the inner wall of the outer ring sleeve, and a protrusion is provided on the outer wall of the inner ring to be embedded in the groove of the outer ring sleeve. In order to prevent it from moving, an interference fit method is used to generate a large friction force for connection. However, when the surface of the bearing inner ring is severely worn or pitted and needs to be replaced, the large friction force will make disassembly very laborious. Utility Model Content

[0004] The utility model aims to provide a bearing ferrule inner ring fixing structure, and adopts the device to work, thereby solving the problem that when the surface of the bearing inner ring is severely worn or pitted and needs to be replaced, the large friction force will make disassembly very laborious.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bearing ring inner ring fixing structure, comprising an outer ring, a bearing ball arranged on the inner side of the outer ring, an outer ring sleeve arranged on the inner side of the bearing ball, an inner ring arranged on the inner side of the outer ring sleeve, a locking mechanism arranged inside the inner ring, and a limiting mechanism arranged on the left side of the outer ring sleeve;

[0006] The engaging mechanism comprises a first limiting rod fixedly connected to the outer wall of the inner ring, a limiting groove is arranged on the left side surface of the outer ring sleeve, and the upper end of the first limiting rod is fixedly connected to the second limiting rod.

[0007] Preferably, the first limiting rods are equidistantly distributed on the outer side wall of the inner ring, and the first limiting rods are fitted with the upper end of the limiting groove in an interference fit.

[0008] Preferably, the central axis of the second limiting rod is perpendicular to the central axis of the first limiting rod, and the second limiting rod and the lower end of the limiting groove are fitted in an interference fit.

[0009] Preferably, the inner side of the left side surface of the outer ring sleeve is connected to a slide groove, the limiting mechanism includes a slider arranged on the inner side of the slide groove, a connecting plate is fixedly connected to the left side of the slider, a baffle is fixedly connected to the inner wall of the connecting plate, a first threaded hole is arranged inside the connecting plate, a threaded rod is threadedly connected to the inner side of the first threaded hole, a second threaded hole is connected to the outer side of the left side surface of the outer ring sleeve, and a third threaded hole is arranged on the front side of the second threaded hole.

[0010] Preferably, the matching mode between the slide groove and the slider is a clearance fit, and the left width of the slider is smaller than the right width of the slider, and the appearance structure of the slider is circular.

[0011] Preferably, the width of the baffle is greater than the width of the limiting groove, and the baffles are equidistantly distributed on the inner side of the connecting plate.

[0012] Preferably, the spacing between the baffles is consistent with the spacing between the first limiting rods, the number of the baffles is consistent with the number of the first limiting rods, and the right side surface of the baffle is in contact with the left side of the outer ring sleeve.

[0013] Preferably, the threaded rod and the second threaded hole are matched in a threaded manner, and the width of the second threaded hole is consistent with the width of the third threaded hole.

[0014] 1. The utility model proposes a bearing ring inner ring fixing structure, which can limit the inner ring by rotating the limiting mechanism to prevent the inner ring from shaking. Compared with the prior art, it does not need to use a greater friction force during engagement, thereby achieving the purpose of convenient disassembly.

[0015] 2. The utility model proposes a bearing ring inner ring fixing structure, which increases the contact area of ​​the engagement through a snap-fit ​​mechanism, disperses the contact stress between the inner ring and the outer ring sleeve, reduces the stress concentration at the connection part, reduces the fatigue strength and life of the connection part, and thus achieves the purpose of extending the service life of the engagement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front cross-sectional structure of the outer ring of the utility model;

[0018] Figure 3 This is a schematic diagram of the left side cross-sectional structure of the inner ring of the utility model;

[0019] Figure 4 For the utility model Figure 2 Schematic diagram of the structure at A in the middle;

[0020] Figure 5 For the utility model Figure 3 Schematic diagram of the structure at point B in the middle.

[0021] In the figure: 1. outer ring; 2. bearing ball; 3. outer ring sleeve; 4. inner ring; 5. locking mechanism; 6. limiting mechanism; 501. first limiting rod; 502. limiting groove; 503. second limiting rod; 7. sliding groove; 601. sliding block; 602. connecting plate; 607. baffle; 603. first threaded hole; 604. threaded rod; 605. second threaded hole; 606. third threaded hole. Specific implementation plan

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: a bearing ring inner ring fixing structure, comprising an outer ring 1, a bearing ball 2 arranged inside the outer ring 1, an outer ring sleeve 3 arranged inside the bearing ball 2, an inner ring 4 arranged inside the outer ring sleeve 3, a clamping mechanism 5 is arranged inside the inner ring 4, and a limiting mechanism 6 is arranged on the left side of the outer ring sleeve 3;

[0024] The locking mechanism 5 includes a first limiting rod 501 fixedly connected to the outer wall of the inner ring 4, and a limiting groove 502 is provided on the left side surface of the outer ring sleeve 3. The first limiting rod 501 is equidistantly distributed on the outer wall of the inner ring 4, and the first limiting rod 501 and the upper end of the limiting groove 502 are matched in an interference fit manner, so that the first limiting rod 501 can be engaged on the inner side of the limiting groove 502, and the upper end of the first limiting rod 501 is fixedly connected to the second limiting rod 503, the central axis of the second limiting rod 503 is perpendicular to the central axis of the first limiting rod 501, and the second limiting rod 503 and the lower end of the limiting groove 502 are matched in an interference fit manner, so that the second limiting rod 503 can be engaged on the inner side of the limiting groove 502.

[0025] The inner side of the left side surface of the outer ring sleeve 3 is connected with a slide groove 7, and the limiting mechanism 6 includes a slider 601 arranged on the inner side of the slide groove 7. The matching mode of the slide groove 7 and the slider 601 is a clearance fit, and the left side width of the slider 601 is smaller than the right side width of the slider 601, and the appearance structure of the slider 601 is circular, so that the slider 601 can rotate on the inner side of the slide groove 7, and the slider 601 will not move out of the inner side of the slider 601 when rotating on the inner side of the slide groove 7. A connecting plate 602 is fixedly connected to the left side of the slider 601, and a baffle 607 is fixedly connected to the inner wall of the connecting plate 602. The spacing between the baffles 607 is consistent with the spacing between the first limiting rods 501, and the number of baffles 607 is consistent with the number of the first limiting rods 501, and the right side surface of the baffle 607 is consistent with the first limiting rods 501. The left side of the outer ring sleeve 3 fits well, the width of the baffle 607 is greater than the width of the limiting groove 502, and the baffle 607 is equidistantly distributed on the inner side of the connecting plate 602, so that the baffle 607 can block the first limiting rod 501 and the second limiting rod 503, and a first threaded hole 603 is arranged inside the connecting plate 602, and a threaded rod 604 is threadedly connected to the inner side of the first threaded hole 603, and a second threaded hole 605 is connected to the outer side of the left side surface of the outer ring sleeve 3, and a third threaded hole 606 is arranged on the front side of the second threaded hole 605, and the threaded rod 604 and the second threaded hole 605 are matched in a threaded manner, and the width of the second threaded hole 605 is consistent with the width of the third threaded hole 606, so that the threaded rod 604 can move on the inner side of the second threaded hole 605 and the third threaded hole 606.

[0026] Align the first limit rod 501 and the second limit rod 503 with the limit groove 502 so that the first limit rod 501 and the second limit rod 503 can move to the inner side of the limit groove 502. Since the central axis of the second limit rod 503 is perpendicular to the central axis of the first limit rod 501, the contact surface between the first limit rod 501 and the second limit rod 503 and the limit groove 502 becomes larger. Increasing the contact area can disperse the contact stress between the first limit rod 501 and the second limit rod 503 and the outer ring sleeve 3, reduce the stress concentration at the connection part, reduce the fatigue strength and life of the connection part, and thus extend the service life of the connection.

[0027] After the first limit rod 501 and the second limit rod 503 move to the inner side of the limit groove 502, rotate the threaded rod 604 to make the threaded rod 604 move out from the inner side of the third threaded hole 606, and rotate the connecting plate 602 to make the baffle 607 move to the left side of the limit groove 502, blocking the first limit rod 501 and the second limit rod 503 to prevent them from displacement. When the same limiting friction force is required, use the baffle 607 to block the first limit rod 501 and the second limit rod 503, which can reduce the friction force of the interference fit between the first limit rod 501 and the second limit rod 503 and the outer ring sleeve 3, making it easier to disassemble the inner ring 4.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing ring inner ring fixing structure, comprising an outer ring (1), a bearing ball (2) arranged inside the outer ring (1), an outer ring sleeve (3) arranged inside the bearing ball (2), and an inner ring (4) arranged inside the outer ring sleeve (3), characterized in that: A locking mechanism (5) is provided inside the inner ring (4), and a limiting mechanism (6) is provided on the left side of the outer ring sleeve (3); The locking mechanism (5) comprises a first limiting rod (501) fixedly connected to the outer wall of the inner ring (4); a limiting groove (502) is provided on the left side surface of the outer ring sleeve (3); and a second limiting rod (503) is fixedly connected to the upper end of the first limiting rod (501).

2. A bearing ring inner ring fixing structure according to claim 1, characterized in that: The first limiting rods (501) are equidistantly distributed on the outer wall of the inner ring (4), and the first limiting rods (501) are fitted with the upper end of the limiting groove (502) in an interference fit.

3. A bearing ring inner ring fixing structure according to claim 1, characterized in that: The central axis of the second limiting rod (503) is perpendicular to the central axis of the first limiting rod (501), and the second limiting rod (503) and the lower end of the limiting groove (502) are fitted in an interference fit.

4. The bearing ring inner ring fixing structure according to claim 1, characterized in that: The inner side of the left side surface of the outer ring sleeve (3) is connected to a slide groove (7), and the limiting mechanism (6) includes a slider (601) arranged on the inner side of the slide groove (7); the left side of the slider (601) is fixedly connected to a connecting plate (602), and the inner wall of the connecting plate (602) is fixedly connected to a baffle (607); the interior of the connecting plate (602) is provided with a first threaded hole (603), and the inner side of the first threaded hole (603) is threadedly connected to a threaded rod (604); the outer side of the left side surface of the outer ring sleeve (3) is connected to a second threaded hole (605), and the front side of the second threaded hole (605) is provided with a third threaded hole (606).

5. A bearing ring inner ring fixing structure according to claim 4, characterized in that: The matching mode between the slide groove (7) and the slider (601) is clearance matching, and the left width of the slider (601) is smaller than the right width of the slider (601), and the appearance structure of the slider (601) is circular.

6. A bearing ring inner ring fixing structure according to claim 4, characterized in that: The width of the baffle (607) is greater than the width of the limiting groove (502), and the baffles (607) are evenly distributed on the inner side of the connecting plate (602).

7. A bearing ring inner ring fixing structure according to claim 4, characterized in that: The spacing between the baffles (607) is consistent with the spacing between the first limiting rods (501), the number of the baffles (607) is consistent with the number of the first limiting rods (501), and the right side surface of the baffle (607) is in contact with the left side of the outer ring sleeve (3).

8. A bearing ring inner ring fixing structure according to claim 4, characterized in that: The threaded rod (604) and the second threaded hole (605) are matched in a threaded manner, and the width of the second threaded hole (605) is consistent with the width of the third threaded hole (606).

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