Tool for measuring axial clearance of four-point contact ball bearing
By designing a four-point contact ball bearing axial clearance measuring fixture, the problem of not being able to directly measure bearing clearance in existing technologies has been solved, achieving accurate and efficient measurement and avoiding the impact of bearing clearance errors on the gearbox.
Patent Information
- Application Number
- CN202422873103.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing technology cannot directly measure the axial clearance of four-point contact ball bearings, leading to problems such as abnormal bearing overheating.
A four-point contact ball bearing axial clearance measuring fixture was designed, including a measuring shaft, a pressure plate, a sleeve, and a dial indicator. Through the combination of cylindrical parts of specific dimensions and detachable connection, accurate measurement of the bearing can be achieved.
This technology enables accurate measurement of bearing clearance, improves measurement efficiency, and avoids the impact of bearing clearance errors on the gearbox.
Smart Images
Figure CN223710501U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of wind power technology, especially four point contact ball bearing measurement axial play frock. BACKGROUND
[0002] Four point contact ball bearing is often used on the high speed shaft and medium speed shaft of wind power main gear box, and is used for bearing the axial force on the shaft, the bearing is spherical bearing, and the rolling surface is arc surface, so the play cannot be directly measured by the way of plug gauge inspection, and the play of the bearing is very important for the operation of the main gear, and the actual play of the bearing and the design do not match, which can cause a series of problems such as abnormal heating of the gear box bearing. SUMMARY
[0003] The utility model discloses a four point contact ball bearing measurement axial play frock, which overcomes the above technical problems.
[0004] In order to achieve the above purpose, the utility model provides the following technical scheme:
[0005] The four point contact ball bearing measurement axial play frock comprises:
[0006] The measuring shaft is coaxially arranged by four cylindrical bodies with different diameters and a supporting cylindrical body, and is connected, the supporting cylindrical body is located at the middle position, and the outer diameter is greater than that of the four cylindrical bodies;
[0007] The pressing plate is connected to one end of the measuring shaft and is used for pressing the measured bearing;
[0008] The sleeve is a hollow cylindrical body and can be sleeved outside the measuring shaft.
[0009] Further, the four hollow cylindrical bodies with different diameters are a first cylindrical body, a second cylindrical body, a third cylindrical body and a fourth cylindrical body, the second cylindrical body is connected to one side of the supporting cylindrical body, the first cylindrical body is connected to one side of the second cylindrical body away from the supporting cylindrical body, the third cylindrical body is connected to one side of the supporting cylindrical body away from the second cylindrical body, and the fourth cylindrical body is connected to one side of the third cylindrical body away from the supporting part.
[0010] Further, the outer diameter of the first cylindrical body is smaller than that of the second cylindrical body, and the outer diameter of the fourth cylindrical body is smaller than that of the third cylindrical body.
[0011] Further, the first cylindrical body, the second cylindrical body, the third cylindrical body, the fourth cylindrical body and the supporting cylindrical body are all hollow cylindrical bodies.
[0012] Further, the inner diameter of the sleeve is greater than the outer diameter of the supporting cylindrical body.
[0013] Further, the pressing plate and the measuring shaft are detachably connected.
[0014] Further, the pressing plate and the measuring shaft are connected through bolts.
[0015] Further, the outer diameter of the first cylinder is 130mm, the outer diameter of the second cylinder is 150mm, the outer diameter of the third cylinder is 160mm, and the outer diameter of the fourth cylinder is 140mm.
[0016] Further, the pressing plate 2 is a hollow cylinder, and the inner diameter is smaller than the outer diameter of the first cylinder 11 and the fourth cylinder 14.
[0017] Further, the first cylinder, the second cylinder, the third cylinder, the fourth cylinder and the supporting cylinder are fixedly connected with each other.
[0018] The four-point contact ball bearing measuring axial clearance tool of the utility model has accurate measurement value, is convenient, is high in efficiency, and can greatly avoid the influence of bearing clearance error on the gear box. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings accompanying the specification provide further understanding of the utility model, explain the utility model and do not constitute undue limitation on the utility model. In the drawings:
[0020] Fig. 1 It is a structural schematic view of the four-point contact ball bearing measuring axial clearance tool.
[0021] Fig. 2 It is a first measurement state schematic view of the four-point contact ball bearing measuring axial clearance tool.
[0022] Fig. 3 It is a second measurement state schematic view of the four-point contact ball bearing measuring axial clearance tool.
[0023] Among them, the above drawings include the following reference signs:
[0024] 1, measuring shaft; 2, pressing plate; 3, sleeve; 4, micrometer; 5, measured bearing; 11, first cylinder; 12, second cylinder; 13, third cylinder; 14, fourth cylinder; 15, supporting cylinder. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative in nature and in no way should be taken as a limitation of the present application and applications or uses thereof. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.
[0026] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.
[0027] Reference will now be made to the following Figs. 1-2 Further description of the present application:
[0028] The four-point contact ball bearing axial clearance measuring tool comprises:
[0029] The measuring shaft 1 is coaxially arranged by four cylinders with different diameters and a supporting cylinder 15, and is connected by the four cylinders and the supporting cylinder 15.
[0030] The pressing plate 2 is connected to one end of the measuring shaft 1 and is used for pressing the measured bearing 5.
[0031] The sleeve 3 is a hollow cylinder and can be sleeved outside the measuring shaft 1.
[0032] The inner diameter of the sleeve 3 is greater than the outer diameter of the supporting cylinder 15, and when the sleeve 3 is sleeved outside the measuring shaft 1, the sleeve 3 can be used to support the measured bearing.
[0033] The four hollow cylinders with different diameters are a first cylinder 11, a second cylinder 12, a third cylinder 13 and a fourth cylinder 14.
[0034] The outer diameter of the first cylinder 11 is smaller than the outer diameter of the second cylinder 12, and the outer diameter of the fourth cylinder 14 is smaller than the outer diameter of the third cylinder 13.
[0035] In an embodiment, the outer diameter of the first cylinder 11 is 130mm, the outer diameter of the second cylinder 12 is 150mm, the outer diameter of the third cylinder 13 is 160mm, and the outer diameter of the fourth cylinder 14 is 140mm.
[0036] By setting four different sizes of outer diameter, the measurement of bearings of various sizes can be met, basically covering the bearings of wind power main gearboxes from 850KW to 3MW.
[0037] The outer diameters of the first cylinder 11, the second cylinder 12, the third cylinder 13 and the fourth cylinder 14 can be set according to the measurement needs, as long as the outer diameter of the first cylinder 11 is smaller than the outer diameter of the second cylinder 12, and the outer diameter of the fourth cylinder 14 is smaller than the outer diameter of the third cylinder 13.
[0038] In the embodiment, the first cylinder 11, the second cylinder 12, the third cylinder 13, the fourth cylinder 14 and the supporting cylinder 15 are all hollow cylinders.
[0039] The first cylinder 11, the second cylinder 12, the third cylinder 13, the fourth cylinder 14 and the supporting cylinder 15 can also achieve the same use effect by using solid cylinders. The advantage of using hollow cylinders is that it can make the device lightweight, save materials, and be easy to store and carry.
[0040] The pressing plate 2 and the measuring shaft 1 are detachably connected to meet the disassembly and assembly needs in the measurement process.
[0041] In the embodiment, the pressing plate 2 and the measuring shaft 1 are connected by bolts.
[0042] In an embodiment, the pressing plate 2 is a hollow cylinder, and the inner diameter is smaller than the outer diameters of the first cylinder 11 and the fourth cylinder 14.
[0043] The first cylinder 11, the second cylinder 12, the third cylinder 13, the fourth cylinder 14 and the supporting cylinder 15 are fixedly connected to each other.
[0044] Alternatively, the first cylinder 11, the second cylinder 12, the third cylinder 13, the fourth cylinder 14 and the supporting cylinder 15 can also be integrally formed.
[0045] In actual measurement, the bearing 5 to be measured is installed on the measuring shaft 1, the inner ring is then pressed by the pressing plate 2, the pressing plate 2 and the measuring shaft 1 are fixed by bolt connection, the dial gauge 4 is erected at the center position, the needle is perpendicular to the outer ring, in the first measurement, the measuring shaft 1 is directly placed on the marble platform, the outer ring of the bearing 5 to be measured falls naturally, at this time, the indication of the dial gauge 4 is recorded, then the sleeve 3 is installed, the outer ring of the bearing 5 to be measured is lifted, so that the measuring shaft 1 is suspended, so that the gravity of the measuring shaft 1 and the pressing plate 2 acts on the inner ring of the bearing 5 to be measured, so that the outer ring is lifted relative to the inner ring, the indication of the dial gauge 4 at this time is recorded, and the difference between the two indications is the initial axial clearance of the bearing 5.
[0046] In the description of the utility model, it is understood that the orientation words such as '' front, back, up, down, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or position relationship is usually based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, under the condition that no opposite statement is made, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the protection scope of the utility model, the orientation words '' inside, outside '' refer to the inside and outside of the contour of each component itself.
[0047] In addition, it should be noted that the use of '' first '' '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore, it cannot be understood as the limitation of the protection scope of the utility model.
[0048] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A four-point contact ball bearing measuring axial play fixture, characterized in that, The utility model relates to a bearing measuring device, which comprises: a measuring shaft (1) formed by coaxially arranging four cylinders with different diameters and a supporting cylinder (15) with a larger diameter than the four cylinders; a pressing plate (2) connected to one end of the measuring shaft (1) for pressing a bearing (5) to be measured; a sleeve (3) in the shape of a hollow cylinder, which can be sleeved outside the measuring shaft (1).
2. The four-point contact ball bearing measuring axial play fixture of claim 1, wherein, The four hollow cylinders with different diameters are a first cylinder (11), a second cylinder (12), a third cylinder (13), and a fourth cylinder (14). The second cylinder (12) is connected to one side of the supporting cylinder (15), the first cylinder (11) is connected to the side of the second cylinder (12) away from the supporting cylinder (15), the third cylinder (13) is connected to the side of the supporting cylinder (15) away from the second cylinder (12), and the fourth cylinder (14) is connected to the side of the third cylinder (13) away from the supporting part.
3. The four-point contact ball bearing measurement axial play fixture of claim 2, wherein, The outer diameter of the first cylinder (11) is smaller than that of the second cylinder (12), and the outer diameter of the fourth cylinder (14) is smaller than that of the third cylinder (13).
4. The four-point contact ball bearing measuring axial play fixture of claim 2, wherein, The first cylinder (11), the second cylinder (12), the third cylinder (13), the fourth cylinder (14), and the supporting cylinder (15) are all hollow cylinders.
5. The four-point contact ball bearing measurement axial play fixture of claim 1, wherein, The inner diameter of the sleeve (3) is larger than the outer diameter of the supporting cylinder (15).
6. The four-point contact ball bearing measurement axial play fixture of claim 1, wherein, The pressing plate (2) and the measuring shaft (1) are detachably connected.
7. The four-point contact ball bearing measurement axial play fixture of claim 6, wherein, The pressing plate (2) and the measuring shaft (1) are connected by bolts.
8. The four-point contact ball bearing measurement axial play fixture of claim 3, wherein, The outer diameter of the first cylinder (11) is 130 mm, the outer diameter of the second cylinder (12) is 150 mm, the outer diameter of the third cylinder (13) is 160 mm, and the outer diameter of the fourth cylinder (14) is 140 mm.
9. The four-point contact ball bearing measurement axial play fixture of claim 8, wherein, The pressing plate (2) is a hollow cylinder with an inner diameter smaller than the outer diameters of the first cylinder (11) and the fourth cylinder (14).
10. The four-point contact ball bearing measurement axial play fixture of claim 9, wherein, The first cylinder (11), the second cylinder (12), the third cylinder (13), the fourth cylinder (14), and the supporting cylinder (15) are fixedly connected to each other.