Bearing testing apparatus

Abstract

The utility model provides a kind of bearing testing equipment, the bearing to be tested includes inner ring and outer ring, it is characterized in that, the bearing testing equipment includes: bearing seat, can be connected with the outer ring, and can keep the outer ring unmoved;Shaft, can be connected with the inner ring, to drive the inner ring rotation;Bearing working condition simulator, configured to simulate bearing working condition;Sensor, in the state that the bearing working condition simulator simulates bearing working condition, sensing data is acquired to the bearing to be tested. According to the bearing testing equipment of the utility model, various real working conditions of bearing can be simulated and sensing data in this simulated working condition is acquired in some aspect of bearing, to provide more accurate and comprehensive data in the design, verification and test phase of bearing, to facilitate subsequent improvement, development and application of bearing.

Description

Technical Field

[0001] This utility model relates to a bearing testing device. Background Technology

[0002] Bearings are critical components in many pieces of equipment. Their performance and lifespan have a significant impact on these devices. Therefore, conducting comprehensive testing on bearings before delivery to users or during the design and manufacturing process to identify any problems can greatly improve the user experience and enhance product competitiveness.

[0003] However, due to the diverse operating environments and varying working conditions of bearings, there is currently no equipment in this field capable of comprehensively testing all aspects of a bearing's performance. Some bearing tests only focus on a single, isolated feature.

[0004] Therefore, there is a need in the art for a bearing testing device that can better and more comprehensively test and evaluate bearing performance. Utility Model Content

[0005] In response to the problems and needs mentioned above, this disclosure proposes a novel technical solution that solves the aforementioned problems and brings about other technical effects by adopting the following technical features.

[0006] This utility model provides a bearing testing device. The bearing to be tested includes an inner ring and an outer ring. The bearing testing device includes: a bearing housing, which can be connected to the outer ring and keep the outer ring stationary; a rotating shaft, which can be connected to the inner ring to drive the inner ring to rotate; a bearing operating condition simulator, configured to simulate the bearing operating condition; and a sensor, which acquires sensing data for the bearing under test when the bearing operating condition simulator simulates the bearing operating condition.

[0007] Preferably, the bearing operating condition simulator includes an axial force application device that can apply a force in the axial direction to the inner ring. Preferably, the axial force application device is a hydraulically or electrically driven component that can move in the axial direction. The sensor includes one or both of the following: a first axial force sensor disposed in a groove adjacent to the outer ring in the bearing housing; and a second axial force sensor disposed in a groove adjacent to the inner ring at the end of the shaft.

[0008] Preferably, the bearing operating condition simulator includes a radial force application device that can apply a radial force to the outer ring. Preferably, the radial force application device is a hydraulically or electrically driven component that can move in the radial direction. The sensor may include one or both of the following: a first radial force sensor disposed in a groove adjacent to the outer ring in the bearing housing; and a second radial force sensor disposed in a groove adjacent to the inner ring at the end of the shaft.

[0009] Preferably, the bearing operating condition simulator includes a temperature control device disposed on at least one axial end face of the bearing housing.

[0010] Preferably, the temperature control device includes one or more of the following: a heating device; more preferably, the heating device is one or more segments of induction heating coil or resistance heating coil embedded in the at least one axial end face along the circumferential direction of the bearing housing; a cooling device; more preferably, the cooling device is one or more segments of Peltier cooling device arranged on the at least one axial end face along the circumferential direction of the bearing housing; and the sensor includes one or more of the following: a first temperature sensor disposed in a groove adjacent to the outer ring in the bearing housing; a second temperature sensor disposed in a groove adjacent to the inner ring at the end of the rotating shaft.

[0011] Preferably, the sensor includes a vibration sensor disposed on the bearing housing.

[0012] Preferably, the vibration sensor is disposed in a groove adjacent to the outer ring in the bearing housing, or the vibration sensor is disposed on the outer peripheral surface of the bearing housing.

[0013] Preferably, the sensor includes a laser velocimeter for sensing the speed of the inner ring and / or the rolling elements of the bearing.

[0014] Preferably, the bearing operating condition simulator includes a magnetic field generator, which is disposed on at least one radial side of the bearing housing and spaced at a certain distance from the bearing housing, so as to generate a magnetic field facing the bearing housing.

[0015] Preferably, the sensor includes a sound sensor, which is configured to be spaced at a certain distance from the bearing housing to obtain sound sensing data of the bearing.

[0016] Preferably, the sensor includes an infrared temperature sensor, which is configured to be spaced at a certain distance from the bearing housing to obtain temperature sensing data for the outer ring, the inner ring, and / or the rolling element between the outer ring and the inner ring.

[0017] Preferably, the bearing testing equipment further includes a sealable housing capable of creating a vacuum environment, and the rotating shaft, the bearing housing, the bearing operating condition simulator, and the sensor are disposed within the housing.

[0018] Preferably, it also includes a vibration sensor fixedly connected to the inner wall of the housing.

[0019] The bearing testing equipment according to this utility model can simulate various real working conditions of the bearing and obtain sensing data of a certain aspect of the bearing under these simulated working conditions, thereby providing more accurate and comprehensive data in the design, verification and testing stages of the bearing, so as to facilitate the subsequent improvement, development and application of the bearing. Attached Figure Description

[0020] Figure 1 This is a perspective view of a bearing testing device according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the bearing housing and sealing cap according to a preferred embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the rotating shaft, the motor connected to the rotating shaft, and the end face of the rotating shaft according to a preferred embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of this disclosure may have fewer components, other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by those skilled in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Where the number of components is not specified, the number of components may be one or more; similarly, terms such as “a,” “the,” and “described” do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “install,” “set,” “connect,” or “link” are not limited to physical or mechanical installation, setting, or connection, but may include electrical installation, setting, or connection, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate the relative positional relationship of the equipment during use or as shown in the accompanying drawings; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] A bearing testing apparatus according to the present invention will now be described with reference to the accompanying drawings. It should be understood that the bearing being tested typically includes an outer ring, an inner ring, and rolling elements located between the outer and inner rings.

[0027] like Figure 1 As shown, the bearing testing equipment according to a preferred embodiment of the present invention includes: a bearing housing 1, which can be connected to the outer ring and keep the outer ring stationary, and the bearing housing 1 can be fixed to the ground or the bottom wall of the sealable housing 10 described below by any suitable means; a rotating shaft 2, which can be connected to the inner ring to drive the inner ring to rotate; a bearing operating condition simulator, configured to simulate the bearing operating condition; and a sensor, which acquires sensing data for the bearing under test when the bearing operating condition simulator simulates the bearing operating condition. In addition, to protect some components (such as sensors) in the bearing housing, the bearing housing may also have a sealing cover 12 that can close its end face, such as... Figure 2 As shown. The rotating shaft 2 can be driven by the motor 13, as... Figure 3 As shown.

[0028] This bearing testing equipment can simulate various real-world operating conditions of a bearing and acquire sensor data on a specific aspect of the bearing under these simulated conditions. Furthermore, the equipment can include various bearing operating condition simulators, such as at least one of the following described later: axial force application device 3, radial force application device 4, temperature control device, and magnetic field generator 7.

[0029] The following section will introduce various bearing operating condition simulators and related sensors.

[0030] Axial force is a common force encountered during bearing operation, typically acting along the axial direction of the bearing on the axial end face of the inner ring. Therefore, simulating axial force loading is crucial during bearing testing. To this end, a bearing operating condition simulator may include an axial force application device 3, which can apply an axial force to the inner ring.

[0031] Preferably, the axial force applying device 3 is a hydraulically or electrically driven component capable of moving in the axial direction. For example, the axial force applying device 3 may include a push rod, and at the end of the push rod may be a component (not shown) that contacts the inner ring of the bearing. This component is, for example, an annular component capable of acting on the inner ring of the bearing in the entire circumferential direction; or, for example, a plurality of components that can contact the inner ring of the bearing and are uniformly arranged in the circumferential direction. Any component that can uniformly apply axial force to the inner ring of the bearing in the circumferential direction is acceptable.

[0032] Preferably, the sensor may include one or both of the following: a first axial force sensor 31 disposed in a groove adjacent to the outer ring in the bearing housing 1, such as... Figure 2 As shown; and a second axial force sensor 32 disposed in a groove adjacent to the inner ring at the end of the rotating shaft 2, as shown. Figure 3 As shown.

[0033] The first axial force sensor 31 located on the bearing housing 1 can be used as the main sensor for sensing axial force, while the second axial force sensor 32 located on the rotating shaft 2 can be used as an auxiliary sensor. The sensing data of the two can be used to comprehensively evaluate the axial force situation of the bearing.

[0034] Radial force is also a common force encountered during bearing operation, typically acting radially on the circumferential surface of the bearing's outer ring. Therefore, simulating radial force loading during bearing testing is crucial. To this end, the bearing operating condition simulator includes a radial force application device 4, which applies a radial force to the outer ring. It should be understood that the radial force application device 4 does not directly contact the bearing outer ring; instead, it applies the radial force to the bearing housing 1 and transmits it to the bearing outer ring through the housing 1.

[0035] Preferably, the radial force applying device 4 is a hydraulically or electrically driven component capable of moving in the radial direction. The radial force applying device 4, for example, has a push rod and a pressure head connected to the end of the push rod. This pressure head can be, for example, a component with a large area (such as...). Figure 1 The disc-shaped pressure head shown allows for more uniform application of radial force.

[0036] Furthermore, the sensor may include one or both of the following: a first radial force sensor 41 disposed in a groove adjacent to the outer ring in the bearing housing 1, such as... Figure 2As shown; the second radial force sensor 42 is disposed in a groove adjacent to the inner ring at the end of the rotating shaft 2, as shown. Figure 3 As shown.

[0037] It should be understood that the axial force sensor and the radial force sensor can be two different force sensors or can be implemented using a single force sensor.

[0038] like Figure 2 and 3 As shown, the first axial force sensor 31 and the first radial force sensor 41 on the bearing housing 1 are actually implemented by a force sensor installed in a groove of the bearing housing 1 (labeled 31 / 41), and preferably, four such axial force sensors are evenly arranged circumferentially. Similarly, the second axial force sensor 32 and the second radial force sensor 42 can be implemented by a force sensor installed in a groove of the rotating shaft 2 (labeled 32 / 42), and preferably, four such radial force sensors are evenly arranged circumferentially.

[0039] The preceding text described the simulation of axial and radial forces that bearings may experience during actual operation. It should also be understood that bearings also encounter high-temperature environments during operation, and these high-temperature environments have a significant impact on bearing operation and performance. Therefore, this invention also proposes to simulate bearing temperature.

[0040] Specifically, the bearing operating condition simulator may include a temperature control device disposed on at least one axial end face of the bearing housing 1. To more comprehensively simulate various temperature conditions that the bearing may encounter, preferably, the temperature control device may include a heating device and / or a cooling device. A heating device can be used, for example, to simulate high temperatures that the bearing may encounter. A cooling device can be used to dissipate heat from bearings that generate a lot of heat, allowing for flexible adjustment of the bearing temperature and maintaining a stable temperature state. More preferably, multiple temperature control devices may be provided and arranged circumferentially on the bearing housing 1.

[0041] Specifically, such as Figure 2 As shown, the heating device may be one or more segments of induction heating coil or resistance heating coil 501 embedded in at least one axial end face along the circumferential direction of the bearing housing 1 (the embedding structure of the heating coil is not specifically shown). The cooling device may be one or more segments of Peltier cooling device 502 arranged on at least one axial end face along the circumferential direction of the bearing housing 1 (the embedding structure of the Peltier cooling device is not specifically shown).

[0042] Accordingly, the sensor may include one or both of the following: a first temperature sensor 51 disposed in a groove adjacent to the outer ring in the bearing housing 1, such as... Figure 2As shown, and preferably, four such first temperature sensors 51 are evenly arranged circumferentially; and a second temperature sensor 52 is disposed in a groove adjacent to the inner ring at the end of the rotating shaft 2, as shown. Figure 3 As shown, and preferably, four such second temperature sensors 52 are evenly arranged circumferentially.

[0043] In addition, the sensor may also include an infrared temperature sensor 9, such as Figure 1 As shown, it is configured to be spaced a certain distance from the bearing housing 1 to obtain temperature sensing data for the outer ring, inner ring, and / or rolling elements. The infrared temperature sensor can be flexibly adjusted to the object to be measured, and therefore can serve as a flexible supplement to the first and second temperature sensors 51 and 52.

[0044] Bearings inevitably vibrate during operation, which significantly affects their operation, lifespan, and related components. Therefore, the sensor may include a vibration sensor (not shown) mounted on the bearing housing 1. Preferably, the vibration sensor is disposed in a groove adjacent to the outer ring in the bearing housing 1, or the vibration sensor may be disposed on the outer circumferential surface of the bearing housing 1, for example, fixedly connected to the outer circumferential surface of the bearing housing 1 in any suitable manner.

[0045] The speed of movement of bearing components (such as the inner ring and rolling elements) is an important aspect of bearing performance; therefore, the sensor may include a laser velocimeter 6 for sensing the speed of the bearing's inner ring and / or rolling elements, such as... Figure 1 As shown. For example, the laser velocity sensor 6 can be positioned at a certain distance from the bearing to avoid interference with other devices or structures.

[0046] In addition, a magnetic field may also exist in the bearing's operating environment. Therefore, the bearing operating condition simulator may also include a magnetic field generator 7, such as... Figure 1 As shown, it is disposed on at least one radial side of the bearing housing 1 and spaced at a certain distance from the bearing housing 1, so as to generate a magnetic field facing the bearing housing 1.

[0047] Bearings generate noise during operation, and quiet operation is a crucial requirement for some equipment. Therefore, it's necessary to assess the noise level of bearings used in such equipment; consequently, sensors can include sound sensors, such as... Figure 1 As shown, it is set at a certain distance from the bearing housing 1 to obtain the sound sensing data of the bearing.

[0048] In addition, in order to provide a more accurate simulation of the bearing's working condition and eliminate the influence of environmental factors, the bearing testing equipment according to this utility model may also include a sealable housing 10 that can form a vacuum environment. The rotating shaft 2, bearing housing 1, various bearing working condition simulators, and various sensors can all be set in the housing 10, so that after a vacuum environment is formed in the housing 10, various working conditions of the bearing can be simulated and targeted tests can be carried out.

[0049] The enclosed housing 10 may include a transparent panel to facilitate observation of the interior. Preferably, the bearing testing equipment may further include a vibration sensor 11 fixedly connected to the inner wall of the housing 10, such as... Figure 1 As shown, the vibration sensor 11 is connected to the bottom wall of the housing 10. Since the vibration of the bearing can be transmitted to the housing through the rotating shaft 2, the motor 23 connected to it, and the base supporting the motor, the vibration sensor 11 can also indirectly obtain the vibration sensing data of the bearing, and even the entire assembly composed of the bearing and the rotating shaft.

[0050] The exemplary embodiments of this disclosure have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A bearing testing device, wherein the bearing to be tested includes an inner ring and an outer ring, characterized in that, The bearing testing equipment includes: The bearing housing (1) is able to connect to the outer ring and keep the outer ring fixed. The rotating shaft (2) can be connected to the inner ring to drive the inner ring to rotate; Bearing operating condition simulator, configured to simulate bearing operating conditions; The sensor acquires sensing data for the bearing under test when the bearing operating condition is simulated by the bearing operating condition simulator.

2. The bearing testing equipment as described in claim 1, characterized in that, The bearing operating condition simulator includes an axial force application device (3), which can apply a force in the axial direction to the inner ring; and The sensor includes one or both of the following: A first axial force sensor (31) is disposed in a groove adjacent to the outer ring in the bearing housing (1). A second axial force sensor (32) is disposed in a groove adjacent to the inner ring at the end of the shaft (2).

3. The bearing testing equipment as described in claim 1, characterized in that, The bearing operating condition simulator includes a radial force application device (4) that can apply a radial force to the outer ring; and The sensor may include one or both of the following: A first radial force sensor (41) is disposed in a groove adjacent to the outer ring in the bearing housing (1). Suppose a second radial force sensor (42) is placed in a groove adjacent to the inner ring at the end of the rotating shaft (2).

4. The bearing testing equipment as described in claim 1, characterized in that, The bearing operating condition simulator includes a temperature control device disposed on at least one axial end face of the bearing housing (1); The sensor may include one or both of the following: A first temperature sensor (51) is disposed in a groove adjacent to the outer ring in the bearing housing (1). A second temperature sensor (52) is disposed in a groove adjacent to the inner ring at the end of the rotating shaft (2).

5. The bearing testing equipment as described in claim 1, characterized in that, The sensor includes a vibration sensor mounted on the bearing housing (1).

6. The bearing testing equipment as described in claim 1, characterized in that, The sensor includes a laser velocimeter (6) for sensing the speed of the inner ring and / or the rolling elements of the bearing.

7. The bearing testing equipment as described in claim 1, characterized in that, The bearing working condition simulator includes a magnetic field generator (7), which is disposed on at least one radial side of the bearing housing (1) and spaced at a certain distance from the bearing housing (1) to generate a magnetic field facing the bearing housing (1).

8. The bearing testing equipment as described in claim 1, characterized in that, The sensor includes a sound sensor (8), which is configured to be spaced a certain distance from the bearing housing (1) to obtain sound sensing data of the bearing.

9. The bearing testing equipment as described in claim 1, characterized in that, The sensor includes an infrared temperature sensor (9) configured to be spaced a certain distance from the bearing housing (1) to obtain temperature sensing data for the outer ring, the inner ring and / or the rolling element between the outer ring and the inner ring.

10. The bearing testing equipment as described in claim 2, characterized in that, The axial force application device (3) is a hydraulically or electrically driven component that can move in the axial direction.

11. The bearing testing equipment as described in claim 3, characterized in that, The radial force application device (4) is a hydraulically or electrically driven component that can move in the radial direction.

12. The bearing testing equipment as described in claim 4, characterized in that, The temperature control device may include one or both of the following: Heating element (501); Refrigeration device (502).

13. The bearing testing equipment as described in claim 12, characterized in that, The heating device is one or more segments of induction heating coil or resistance heating coil embedded in at least one axial end face along the circumferential direction of the bearing seat (1).

14. The bearing testing equipment as described in claim 12, characterized in that, The refrigeration device is one or more Peltier refrigeration devices arranged along the circumferential direction of the bearing housing (1) on at least one axial end face.

15. The bearing testing equipment as described in claim 5, characterized in that, The vibration sensor is disposed in a groove adjacent to the outer ring in the bearing housing (1), or the vibration sensor is disposed on the outer peripheral surface of the bearing housing (1).

16. The bearing testing equipment as described in any one of claims 1-15, characterized in that, It also includes a sealable housing (10) capable of creating a vacuum environment, and the rotating shaft (2), the bearing housing (1), the bearing operating condition simulator, and the sensor are disposed in the housing (10).

17. The bearing testing equipment as described in claim 16, characterized in that, It also includes a vibration sensor (11) fixedly connected to the inner wall of the housing (10).

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