Axial clearance adjusting device for tapered roller bearing
By designing a tapered roller bearing axial clearance adjustment device containing a bearing seat, using the coordination of the stop ring and through holes, the complex and cost-effective problems of traditional adjustment methods are solved, and the accurate adjustment of the bearing axial clearance is achieved. and improve production efficiency.
Patent Information
- Application Number
- CN202421171969.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The axial clearance adjustment of traditional tapered roller bearings is complex and costly, requiring repeated disassembly and assembly, which increases labor and process costs and may cause damage to parts.
An adjustment device including a bearing seat is designed, which consists of a bearing mounting part and a press ring mounting part. Through the cooperation of the stop ring and the through hole, the axial clearance of the bearing is accurately adjusted.
It has been installed in one place, reducing the repeated disassembly and assembly of parts, reducing labor and process costs, improving production efficiency, and simplifying structural design.
Smart Images
Figure CN222479390U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing adjustment, in particular to an axial clearance adjustment device for a tapered roller bearing. Background Art
[0002] In the field of non-road diesel engines, especially in construction machinery, the engine is often required to be equipped with a hydraulic pump, and the load of the hydraulic pump is often relatively large, which requires the use of tapered roller bearings. Tapered roller bearings are generally arranged in an opposed manner. The axial clearance of tapered roller bearings has a great influence on the life of the bearings. If the bearing clearance is not properly controlled, the bearings may be burned at the least, and the entire shaft system of the engine may be damaged at the worst.
[0003] The traditional way of adjusting the axial clearance of tapered roller bearings often requires opening observation ports or inspection ports on related parts to repeatedly observe and adjust the axial clearance of tapered roller bearings. Precision measuring tools such as dial indicators may also be required during the adjustment process, and related parts are also subject to repeated disassembly and assembly. First, repeated disassembly and assembly greatly increases labor costs, process costs, and process time; second, the observation ports or inspection ports also make the overall structure complex and increase the number of places that need to be sealed; third, repeated disassembly and assembly of parts may also cause damage to parts, especially failure of seals, resulting in unnecessary losses. Utility Model Content
[0004] The utility model aims to provide a tapered roller bearing axial clearance adjustment device to greatly reduce the complexity of the overall structure. It can be installed in place at one time under the premise of controlling the axial clearance of the bearing, avoiding repeated disassembly and assembly of related parts, reducing labor costs and process costs, and improving production rhythm.
[0005] In order to achieve the above purpose, the utility model adopts the following technical means:
[0006] A tapered roller bearing axial clearance adjustment device comprises a bearing seat sleeved on the outer edge of the bearing, the bearing seat comprises a bearing mounting portion and a pressure ring mounting portion coaxially connected, the inner diameter of the bearing mounting portion is smaller than the inner diameter of the pressure ring mounting portion, and the first end face of the bearing mounting portion faces the inner ring of the pressure ring mounting portion;
[0007] The inner ring of the bearing mounting portion is used for inlaying and mounting the bearing;
[0008] The inner ring of the pressure ring mounting portion is threadedly mounted with a retaining ring, the outer wall of the retaining ring is provided with an external thread, the inner wall of the inner ring of the pressure ring mounting portion is provided with an internal thread, and the axial projection of the retaining ring toward the first end face is located at the outer ring position of the bearing;
[0009] The retaining ring is provided with a through hole around its axis and penetrating along its axis;
[0010] The first end surface is provided with a threaded hole around its axis and extending along its axis;
[0011] The through hole and the threaded hole have the same pitch circle diameter.
[0012] Preferably, the number of the threaded holes is the same as the number of the through holes.
[0013] Furthermore, the through hole and the threaded hole are positioned and connected by bolts.
[0014] Furthermore, one end of the through hole away from the first end surface is set as a bolt head positioning portion, and the inner diameter of the bolt head positioning portion gradually increases along the direction away from the first end surface.
[0015] Furthermore, the outer wall of the retaining ring is threadedly connected to the inner wall of the pressure ring mounting portion, and the inner diameter of the retaining ring is smaller than the outer diameter of the outer ring of the bearing and larger than the inner diameter of the outer ring of the bearing.
[0016] Furthermore, the bearing seat is connected to the gear box housing and is used to position the bearing and the power shaft.
[0017] During use, the utility model has the following beneficial effects:
[0018] When the retaining ring is completely in contact with the outer ring of the bearing, the axial clearance of the bearing is 0. The axial clearance of the bearing can be adjusted by rotating the retaining ring to keep it away from the bearing. The axial clearance of the bearing can be adjusted accurately and conveniently by using the relationship between the number of overlaps between the through hole and the threaded hole, the pitch between the retaining ring and the mounting part of the pressure ring, and the number of through holes or threaded holes. This makes it convenient to design and control the axial clearance of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model installed on the housing.
[0020] Figure 2 It is a front view structural schematic diagram of the utility model in the installed state.
[0021] Figure 3 for Figure 2 Schematic diagram of the AA section structure.
[0022] Among them, 1-bearing, 2-bearing seat, 21-bearing mounting part, 22-pressure ring mounting part, 3-first end face, 4-retaining ring, 5-through hole, 6-threaded hole, 7-housing. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.
[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] Please refer to Figures 1 to 3As shown, a tapered roller bearing axial clearance adjustment device comprises a bearing seat 2 sleeved on the outer edge of a bearing 1, the bearing seat 2 comprises a bearing mounting portion 21 and a pressure ring mounting portion 22 coaxially connected, the inner diameter of the bearing mounting portion 21 is smaller than the inner diameter of the pressure ring mounting portion 22, and the first end face 3 of the bearing mounting portion 21 faces the inner ring of the pressure ring mounting portion 22;
[0030] The inner ring of the bearing mounting portion 21 is used for embedding and mounting the bearing 1;
[0031] The inner ring thread of the pressure ring mounting portion 22 is threadedly mounted with a retaining ring 4, the outer wall of the retaining ring 4 is provided with an external thread, the inner wall of the inner ring of the pressure ring mounting portion 22 is provided with an internal thread, and the axial projection of the retaining ring 4 toward the first end face 3 is located at the outer ring position of the bearing 1;
[0032] The retaining ring 4 is provided with a through hole 5 around its axis and penetrating along its axis;
[0033] The first end surface 3 is provided with a threaded hole 6 around its axis and extending along its axis;
[0034] The through hole 5 and the threaded hole 6 have the same pitch circle diameter.
[0035] In this way, when the retaining ring 4 is completely in contact with the outer ring of the bearing 1, the axial clearance of the bearing 1 is 0. The axial clearance of the bearing 1 can be adjusted by rotating the retaining ring 4 to move the retaining ring 4 away from the bearing 1, and the axial clearance of the bearing 1 can be accurately and conveniently adjusted by using the relationship between the number of overlaps between the through hole 5 and the threaded hole 6, the pitch between the retaining ring 4 and the pressure ring mounting portion 22, and the number of the through hole 5 or the threaded hole 6. Thus, the axial clearance of the bearing 1 can be conveniently designed and controlled.
[0036] Specifically, assuming that the aforementioned pitch is p, the number of through holes 5 and threaded holes 6 is n, the number of alignments of threaded holes 6 with through holes 5 is i, after the adjustment is completed, the retaining ring 4 is positioned after the bolt passes through the through hole 5 and is connected to the threaded hole 6. Then the axial clearance x of the magnetic bearing 1 can be expressed as:
[0037] (i-1)p / n≤x<ip / n.
[0038] The axial clearance of the bearing 1 can be adjusted by adjusting the thread pitch p, the number of hole positions n and the number of rotation alignment i, eliminating the step of measuring the clearance of the bearing 1 with measuring tools such as a dial indicator. It is simple and compact, with low assembly cost, meets market requirements, and reduces process installation costs.
[0039] Furthermore, the number of the threaded holes 6 is the same as the number of the through holes 5 .
[0040] Furthermore, the through hole 5 and the threaded hole 6 are positioned and connected by bolts.
[0041] At the same time, in order to make the installation of the bolt more stable when the through hole 5 and the threaded hole 6 are positioned, the end of the through hole 5 away from the first end face 3 is set as a bolt head positioning portion, and the inner diameter of the bolt head positioning portion gradually increases in the direction away from the first end face 3.
[0042] In addition, the outer wall of the retaining ring 4 is threadedly connected to the inner wall of the pressure ring mounting portion 22 , and the inner diameter of the retaining ring 4 is smaller than the outer diameter of the outer ring of the bearing 1 and larger than the inner diameter of the outer ring of the bearing 1 .
[0043] Furthermore, the bearing seat 2 is connected to the gear box housing 7 for positioning the bearing 1 and the power shaft.
[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A tapered roller bearing axial clearance adjustment device, characterized in that: The bearing seat (2) comprises a bearing seat (2) sleeved on the outer edge of a bearing (1), the bearing seat (2) comprising a bearing mounting portion (21) and a pressure ring mounting portion (22) coaxially connected, the inner diameter of the bearing mounting portion (21) being smaller than the inner diameter of the pressure ring mounting portion (22), and the first end surface (3) of the bearing mounting portion (21) facing the inner ring of the pressure ring mounting portion (22); The inner ring of the bearing mounting portion (21) is used for embedding and mounting the bearing (1); The inner ring of the pressure ring mounting portion (22) is threadedly mounted with a retaining ring (4), the outer wall of the retaining ring (4) is provided with an external thread, the inner wall of the inner ring of the pressure ring mounting portion (22) is provided with an internal thread, and the axial projection of the retaining ring (4) toward the first end face (3) is located at the outer ring position of the bearing (1); The retaining ring (4) is provided with a through hole (5) around its axis and penetrating along its axis; The first end surface (3) is provided with a threaded hole (6) around its axis and extending along its axis; The through hole (5) and the threaded hole (6) have the same pitch circle diameter.
2. The axial clearance adjustment device of a tapered roller bearing (1) according to claim 1, characterized in that: The number of the threaded holes (6) is the same as the number of the through holes (5).
3. The axial clearance adjustment device of a tapered roller bearing (1) according to claim 1, characterized in that: The through hole (5) and the threaded hole (6) are positioned and connected via bolts.
4. The axial clearance adjustment device for a tapered roller bearing (1) according to claim 1, characterized in that: One end of the through hole (5) away from the first end surface (3) is provided as a bolt head positioning portion, and the inner diameter of the bolt head positioning portion gradually increases in a direction away from the first end surface (3).
5. The axial clearance adjustment device of a tapered roller bearing (1) according to claim 1, characterized in that: The outer wall of the retaining ring (4) is threadedly connected to the inner wall of the pressure ring mounting portion (22); the inner diameter of the retaining ring (4) is smaller than the outer diameter of the outer ring of the bearing (1) and larger than the inner diameter of the outer ring of the bearing (1).
6. The axial clearance adjustment device for a tapered roller bearing (1) according to claim 1, characterized in that: The bearing seat (2) is connected to the gear box housing (7) and is used to position the bearing (1) and the power shaft.