Bearing start-up torque detection device
By designing limiting structures for the mandrel, inner screw cap, outer shell, outer screw cap, and outer pressure cap, the accuracy and cost issues of bearing starting torque measurement were solved, enabling efficient and low-cost testing of multiple bearing models.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN METALLURGICAL BEARING
- Filing Date
- 2025-05-16
- Publication Date
- 2026-06-02
AI Technical Summary
Existing methods for measuring bearing starting torque suffer from insufficient accuracy and high cost, making it difficult to meet the testing needs of various bearing models.
A bearing starting torque detection device was designed, comprising a mandrel, an inner threaded cap, a housing, an outer threaded cap, and an outer pressure cap. The device ensures measurement accuracy through a limiting structure and supports the detection of various bearing models.
It achieves highly reliable and low-cost bearing starting torque detection, simplifies the operation process, is highly adaptable, easy to integrate into existing production lines, and reduces wear.
Smart Images
Figure CN224317204U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of torque detection technology, specifically a bearing starting torque detection device. Background Technology
[0002] Starting torque is one of the important parameters of a bearing. It refers to the torque a bearing experiences during startup and is of significant reference value for bearing selection and use. Understanding bearing starting torque helps us to select and use bearings rationally, reduce bearing life loss, and improve equipment reliability and efficiency.
[0003] For special applications, some bearings require axial preload. If the preload is set exactly according to the axial preload amount, there will be a starting torque requirement for some bearings.
[0004] Bearings typically consist of an outer ring, an inner ring, and several rollers. Both the outer and inner rings have grooves on their opposing walls, forming a raceway between the two grooves for the rollers to roll. During the manufacturing process, bearings often require various tests, such as axial clearance, radial clearance, and starting torque, to ensure that all bearing values are within reasonable ranges. Regarding starting torque, various methods exist for measuring it. However, to ensure measurement accuracy, it is necessary to simplify the measuring fixtures and testing range, reduce measurement costs, and cover a wide range of bearing models. Therefore, certain improvements are required. Utility Model Content
[0005] In view of the shortcomings of the prior art, this utility model provides a bearing starting torque testing device, which can ensure measurement accuracy while simplifying the tooling and testing process and expanding the application range of bearing starting torque measuring equipment.
[0006] To achieve the above objectives, the present invention provides a bearing starting torque detection device, comprising a mandrel, an inner threaded cap, a housing, an outer threaded cap, and an outer pressure cap; a first set of tapered roller bearings, an outer spacer, and a second set of tapered roller bearings are fitted onto one side of the mandrel, with the outer spacer positioned between the first set of tapered roller bearings and the second set of tapered roller bearings; the inner threaded cap is connected to the mandrel and contacts the second set of tapered roller bearings, and the inner threaded cap is provided with an inner square fixing groove; the housing is fitted onto the outer circumferential surface of the first set of tapered roller bearings and the outer circumferential surface of the second set of tapered roller bearings; the outer threaded cap is connected to the housing; the outer pressure cap is operably associated with the housing, and the outer pressure cap is provided with an outer square fixing groove, which corresponds to the inner square fixing groove, and a torque wrench is inserted into the outer square fixing groove and the inner square fixing groove.
[0007] Furthermore, the end face of the outer casing is connected to the outer pressure cover by hexagon socket head cap screws.
[0008] Furthermore, the mandrel includes a mandrel head and a mandrel rod. The inner ring end face of the first set of tapered roller bearings abuts against the mandrel head, the mandrel rod contacts the inner circumferential surface of the inner ring of the first set of tapered roller bearings, and the mandrel rod contacts the inner circumferential surface of the inner ring of the second set of tapered roller bearings.
[0009] Furthermore, the inner circumferential surface of the inner screw cap is threadedly connected to the core rod, and the end face of the inner screw cap abuts against the end face of the inner ring of the second set of tapered roller bearings.
[0010] Furthermore, the outer circumferential surface of the outer screw cap is threadedly connected to the inner circumferential surface of the outer shell, and the end face of the outer screw cap abuts against the small end face of the outer ring of the first set of tapered roller bearings.
[0011] Furthermore, the end face of the outer pressure cap abuts against the small end face of the outer ring of the second set of tapered roller bearings.
[0012] Furthermore, one end of the outer spacer abuts against the large end face of the outer ring of the first set of tapered roller bearings, and the other end of the outer spacer abuts against the large end face of the outer ring of the second set of tapered roller bearings.
[0013] The beneficial effects of this utility model are:
[0014] 1. The test results are highly reliable, and the cost of testing is low;
[0015] 2. Simple operation, making the process of testing the starting torque of the bearing more convenient and faster;
[0016] 3. Structural optimization and adaptability: The compact design structure is easy to integrate into existing production lines or test benches and supports different bearing models (such as ball bearings and roller bearings).
[0017] 4. It can reduce the wear of counterweights during use and improve the reliability of bearing starting torque test results. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the mandrel structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the outer shell of this utility model;
[0021] Figure 4 This is a schematic diagram of the internal screw cap of this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the outer pressure cap of this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the outer spacer ring of this utility model;
[0024] Figure 7 This is a schematic diagram of the external screw cap of this utility model;
[0025] In the diagram: 100, mandrel; 110, mandrel head; 120, mandrel rod.
[0026] 200. Inner threaded cap; 210. Inner square retaining groove.
[0027] 300. Outer casing
[0028] 400. External screw cap,
[0029] 500. Outer pressure cap; 510. Outer square fixing slot; 520. Socket headstock screw.
[0030] 600, outer spacer ring,
[0031] 700, First group of tapered roller bearings,
[0032] 800, the second group of tapered roller bearings. Detailed Implementation
[0033] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0034] like Figure 1-7As shown, one embodiment of this utility model discloses a bearing starting torque detection device, including a spindle 100, an inner threaded cap 200, a housing 300, an outer threaded cap 400, and an outer pressure cap 500. A first set of tapered roller bearings 700, an outer spacer 600, and a second set of tapered roller bearings 800 are fitted onto one side of the spindle 100, with the outer spacer 600 positioned between the first set of tapered roller bearings 700 and the second set of tapered roller bearings 800. The inner threaded cap 200 is connected to the spindle 100, and the inner threaded cap 200 is connected to the second set of tapered roller bearings 800. The inner screw cap 200 is provided with an inner square fixing groove 210; the outer shell 300 is sleeved on the outer circumferential surface of the first set of tapered roller bearings 700 and the outer circumferential surface of the second set of tapered roller bearings 800; the outer screw cap 400 is connected to the outer shell 300; the outer pressure cap 500 is operably associated with the outer shell 300, and the outer pressure cap 500 is provided with an outer square fixing groove 510, which corresponds to the inner square fixing groove 210. A torque wrench is inserted into the outer square fixing groove 510 and the inner square fixing groove 210.
[0035] It should be noted that the inner rings of the two sets of bearings are axially limited by the spindle 100 and the outer pressure cover 500 to prevent cross-movement on the spindle 100; the outer rings of the two sets of bearings are axially limited by the outer shell 300, the outer screw cap 400, the outer spacer 600 and the outer pressure cover 500 to prevent cross-movement and affect the test results of the starting torque.
[0036] In one embodiment, the end face of the housing 300 is connected to the outer pressure cap 500 by a hex socket head cap screw 520.
[0037] In one embodiment, the mandrel 100 includes a mandrel head 110 and a mandrel 120. The inner ring end face of the first set of tapered roller bearings 700 abuts against the mandrel head 110, the mandrel 120 contacts the inner circumferential surface of the inner ring of the first set of tapered roller bearings 700, and the mandrel 120 contacts the inner circumferential surface of the inner ring of the second tapered roller bearing.
[0038] Furthermore, the inner circumferential surface of the inner threaded cap 200 is threadedly connected to the core rod 120, and the end face of the inner threaded cap 200 abuts against the end face of the inner ring of the second set of tapered roller bearings 800.
[0039] In one embodiment, the outer circumferential surface of the outer screw cap 400 is threadedly connected to the inner circumferential surface of the housing 300, and the end face of the outer screw cap 400 abuts against the small end face of the outer ring of the first set of tapered roller bearings 700.
[0040] In one embodiment, the end face of the outer pressure cap 500 abuts against the small end face of the outer ring of the second set of tapered roller bearings 800.
[0041] It should be noted that the outer pressure cover 500 is fixed to the outer casing 300 by tightening the internal hexagonal head screws. To avoid the screws being too long, the outer pressure cover 500 is provided with an elongated hole.
[0042] In one embodiment, one end of the outer spacer 600 abuts against the large end face of the outer ring of the first set of tapered roller bearings 700, and the other end of the outer spacer 600 abuts against the large end face of the outer ring of the second set of tapered roller bearings 800.
[0043] The bearing starting torque testing device described above is used as follows: The core head 110 of the mandrel 100 is fixed; the first set of bearings is installed along the outer diameter of the mandrel 120; the outer casing 300 is installed along the outer diameter of the outer ring of the first set of bearings; the outer spacer 600 is installed along the inner diameter of the outer casing 300; the second set of bearings is installed along the outer diameter of the mandrel 120; the inner thread cap 200 is installed along the mandrel 120, so that the end face of the inner thread cap 200 abuts against the end face of the inner ring of the second set of bearings; the outer thread cap 400 is installed into the outer casing 300 from the direction of the core head 110, so that the end face of the outer thread cap 400 abuts against the end face of the bearing; the outer pressure cap 500 is installed along the direction of the mandrel 120 using an internal hexagonal head screw, so that the outer pressure cap 500 is threadedly connected to the outer casing 300; and a torque wrench is inserted into the inner square fixing groove 210 and the outer square fixing groove.
[0044] Set the torque wrench to peak mode, insert the square head of the torque wrench into the inner square fixing groove 210 of the inner threaded cover 200, and apply a fixed tightening torque through the torque wrench; finally, set the torque wrench to real-time mode, apply a torque load to the torque wrench, and stop when the bearing rotates. The real-time torque obtained is the starting torque of the bearing when a specific load is applied.
[0045] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.
Claims
1. A bearing starting torque detection device, characterized in that: include A mandrel, with a first set of tapered roller bearings, an outer spacer, and a second set of tapered roller bearings fitted onto one side, the outer spacer being positioned between the first set of tapered roller bearings and the second set of tapered roller bearings; An inner threaded cap is connected to the spindle and contacts the second set of tapered roller bearings. The inner threaded cap is provided with an inner square fixing groove. The outer casing is fitted onto the outer circumferential surface of the first set of tapered roller bearings and the outer circumferential surface of the second set of tapered roller bearings; An outer screw cap is connected to the outer shell; An outer pressure cap, operably associated with the housing, is provided with an outer square fixing groove corresponding to an inner square fixing groove, into which a torque wrench is inserted.
2. The bearing starting torque detection device according to claim 1, characterized in that: The end face of the outer casing is connected to the outer pressure cover by hexagon socket head cap screws.
3. The bearing starting torque detection device according to claim 1, characterized in that: The mandrel includes a mandrel head and a mandrel rod. The inner ring end face of the first set of tapered roller bearings abuts against the mandrel head. The mandrel rod contacts the inner circumferential surface of the inner ring of the first set of tapered roller bearings. The mandrel rod contacts the inner circumferential surface of the inner ring of the second set of tapered roller bearings.
4. The bearing starting torque detection device according to claim 3, characterized in that: The inner circumferential surface of the inner screw cap is threadedly connected to the core rod, and the end face of the inner screw cap abuts against the end face of the inner ring of the second set of tapered roller bearings.
5. The bearing starting torque detection device according to claim 1, characterized in that: The outer circumferential surface of the outer screw cap is threadedly connected to the inner circumferential surface of the outer shell, and the end face of the outer screw cap abuts against the small end face of the outer ring of the first set of tapered roller bearings.
6. The bearing starting torque detection device according to claim 1, characterized in that: The end face of the outer pressure cover abuts against the small end face of the outer ring of the second set of tapered roller bearings.
7. The bearing starting torque detection device according to claim 1, characterized in that: One end of the outer spacer abuts against the large end face of the outer ring of the first set of tapered roller bearings, and the other end of the outer spacer abuts against the large end face of the outer ring of the second set of tapered roller bearings.