Bearing testing equipment

Abstract

The invention discloses bearing test equipment, which is used for testing a test bearing, and comprises an equipment shell, a bearing test table and a bearing test table, the outer ring of the outer bearing is fixed relative to the equipment shell; the bearing connecting piece is configured to be fixedly connected to the inner ring of the external bearing and the outer ring of the test bearing, so that the inner ring of the external bearing, the bearing connecting piece and the outer ring of the test bearing are fixed with one another so as to be driven to synchronously rotate; and a test bearing support member configured to fix an inner ring of the test bearing relative to the device housing. According to the bearing test equipment, the bearing test of which the outer ring rotates can be executed. By arranging the external bearing and the bearing connecting piece, the outer ring of the test bearing can be directly driven by the motor, so that the stable high-speed rotation of the test bearing in the test process is ensured.

Description

Technical Field

[0001] The present invention relates to the field of mechanical equipment, and in particular to a bearing testing device. Background Art

[0002] Bearings are widely used in various fields. In some fields (such as vehicles), bearings will be affected by various factors in actual use, such as widely varying temperatures and loads. Therefore, it is necessary to perform performance tests on such bearings before installation and use.

[0003] Testing bearings typically requires setting up a test system or test equipment. Generally, it's desirable to subject the bearing to stresses that correspond to the actual application. For example, if the outer ring of a bearing will experience high-speed rotation while the inner ring is fixed, it may be desirable to test the bearing in the same operating mode to better understand and predict bearing performance.

[0004] Therefore, it is desirable to provide a testing apparatus for testing bearings configured for outer ring rotation that improves the testing of bearings in at least some aspects. Summary of the Invention

[0005] In response to the above problems, according to a first aspect of the present invention, a bearing testing device is proposed for testing a test bearing, comprising: a device housing; an external bearing, the outer ring of the external bearing being fixed relative to the device housing; a bearing connector, the bearing connector being configured to be fixedly connected to the inner ring of the external bearing and the outer ring of the test bearing, so that the inner ring of the external bearing, the bearing connector and the outer ring of the test bearing are fixed to each other so as to be driven to rotate synchronously; and a test bearing support component, the test bearing support component being configured to fix the inner ring of the test bearing relative to the device housing.

[0006] The bearing testing apparatus described above, according to the present invention, is capable of performing outer ring rotational bearing testing. By providing an external bearing and bearing connector, the outer ring of the test bearing can be directly driven by a motor, such as a spindle motor, ensuring stable, high-speed rotation of the test bearing during testing. This configuration of the bearing testing apparatus is also particularly suitable for testing small bearings, such as those installed in the electric drivetrains of electric vehicles.

[0007] The bearing testing device according to the present invention may have one or more of the following features.

[0008] According to one embodiment, the test bearing is preferably arranged radially inwardly of the inner ring of the outer bearing, with a center plane of the outer bearing perpendicular to the rotation axis being coplanar with a center plane of the test bearing perpendicular to the rotation axis. In the bearing testing apparatus according to this embodiment, the drive applied to the test bearing is further improved.

[0009] According to one embodiment, the bearing connector preferably includes a first shoulder portion and a second shoulder portion that respectively abut against the inner ring of the external bearing on both axial sides, and a third shoulder portion configured to abut against one axial side of the outer ring of the test bearing. In the bearing testing apparatus according to this embodiment, the structure of the bearing connector further improves the operational stability of the external bearing and the test bearing.

[0010] According to one embodiment, the test bearing support component preferably has a first end and a second end facing oppositely. The test bearing support component includes a radial loading portion and a fourth shoulder portion at the first end. The radial loading portion is configured to be received radially inwardly of the inner ring of the test bearing to apply a radial load to the test bearing, and the fourth shoulder portion is configured to abut against an axial side of the inner ring of the test bearing to apply an axial load to the test bearing. In the bearing testing apparatus according to this embodiment, radial and axial loads are applied to the inner ring of the test bearing via the test bearing support component, and the application of the test loads is stable and reliable.

[0011] According to one embodiment, the bearing testing apparatus preferably further comprises an intermediate accommodating member mounted within the apparatus housing, the intermediate accommodating member defining a receiving hole for accommodating the second end of the test bearing support member, and the intermediate accommodating member being configured to transmit an axial load to the test bearing support member. In the bearing testing apparatus according to this embodiment, the intermediate accommodating member transmits the axial load to the test bearing support member, enabling flexible selection of a corresponding device for generating the axial load and convenient adjustment of the axial load.

[0012] According to one embodiment, preferably, the bearing testing device further comprises a first accommodating seat and a second accommodating seat installed in the device housing, wherein the first accommodating seat is provided with a first central cavity, the first central cavity accommodating the external bearing, the second accommodating seat is provided with a second central cavity, the second central cavity accommodating the intermediate accommodating component, and the first accommodating seat and the second accommodating seat are further provided with a first hoisting portion and a second hoisting portion, respectively, configured to be hoisted by a hoisting device. According to the bearing testing device of this embodiment, the various components to be arranged in the device housing can first be installed together with the first and second accommodating seats, and then the various components installed with each other can be lifted together by the hoisting device via the first and second hoisting portions and placed into the device housing, thereby simplifying the installation process while ensuring the test effect.

[0013] According to one embodiment, the bearing testing apparatus preferably further includes a radial loading component mounted within the apparatus housing. The radial loading component is attached between the first and second ends of the test bearing support component and is configured to apply a load to the test bearing support component in a radial direction. In the bearing testing apparatus according to this embodiment, the radial loading component applies a load perpendicular to the axial direction to the test bearing support component, causing the test bearing support component to apply a radial load to the inner ring of the test bearing. This allows for flexible selection of a corresponding device for generating the radial load and facilitates adjustment of the radial load.

[0014] According to one embodiment, the test bearing support component preferably includes a groove extending from a position between the first and second ends of the test bearing support component to the first end of the test bearing support component. A temperature detection device is fixedly disposed in the groove and contacts the inner ring of the test bearing at the first end of the test bearing support component to detect the temperature of the inner ring of the test bearing. In the bearing testing equipment according to this embodiment, a suitable mounting and fixing position is reserved on the test bearing support component for the temperature detection device, allowing the temperature detection device to directly contact the inner ring of the test bearing. This arrangement also facilitates wiring and adjustment of the temperature detection device.

[0015] According to one embodiment, the bearing testing apparatus preferably further includes a vibration detection device, wherein the vibration detection device is fixedly mounted on the test bearing support component and / or is an accelerometer. In the bearing testing apparatus according to this embodiment, the vibration detection device is mounted on the test bearing support component, thereby enabling detection at locations within the bearing testing apparatus where vibration amplitude is most pronounced, significantly improving vibration detection accuracy and enhancing testing results.

[0016] According to one embodiment, the bearing testing apparatus preferably further comprises a first accommodating seat, wherein the first accommodating seat comprises a first central cavity and a heater receiving hole disposed around the first central cavity, the outer bearing being disposed in the first central cavity, and the heater being disposed in the heater receiving hole. In the bearing testing apparatus according to this embodiment, by disposing the heater in the first accommodating seat and substantially surrounding the outer bearing, the test bearing can be heated effectively and relatively evenly, thereby improving testing results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. The drawings are only used to illustrate some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.

[0018] Figure 1 is a perspective view of a bearing testing apparatus according to the present invention.

[0019] Figure 2 is another perspective view of a bearing testing apparatus according to the present invention.

[0020] Figure 3 is a cross-sectional view of a bearing testing apparatus according to the present invention.

[0021] Figure 4 is a top view of a bearing testing device according to the present invention.

[0022] Figure 5 is an exploded view of a bearing testing apparatus according to the present invention.

[0023] Figure 6 is a cross-sectional view of a bearing testing apparatus according to the present invention near a test bearing.

[0024] Figure 7 is another cross-sectional view of a bearing testing apparatus according to the present invention.

[0025] Reference Signs List

[0026] 1Bearing testing equipment

[0027] 100 Equipment housing

[0028] 101 Cavity of the device housing

[0029] 110 drive shaft

[0030] 200 test bearings

[0031] 201 Test bearing center plane

[0032] 210 Test bearing outer ring

[0033] 220 Test bearing inner ring

[0034] 300 External bearing

[0035] 301 Center plane of external bearing

[0036] 310 Outer ring of external bearing

[0037] 320 Inner ring of external bearing

[0038] 350 External bearing housing

[0039] 400 bearing connector

[0040] 410 First part of the bearing connector

[0041] 411 Arrangement of bearing connections Test bearing cavity

[0042] 420 Second part of the bearing connector

[0043] 451 First Block Shoulder

[0044] 452 Second shoulder

[0045] 453 Third Block Shoulder

[0046] 500 Test bearing support components

[0047] 511 Test the first end of the bearing support component

[0048] 512 Test the second end of the bearing support component

[0049] 520 radial loading unit

[0050] 521 Loading surface of radial loading portion

[0051] 530 grooves

[0052] 554 Fourth Block Shoulder

[0053] 600 Intermediate receiving part

[0054] 610 receiving hole

[0055] 710 Axially loaded intermediate component

[0056] 720 Radial Loading Components

[0057] 725 Radially loaded intermediate components

[0058] 810 First Storage Seat

[0059] 811 First Central Chamber

[0060] 812 heater receiving hole

[0061] 815 First Hoisting Department

[0062] 820 Second Storage Seat

[0063] 821 Second Central Chamber

[0064] 825 Second Hoisting Department

[0065] 830 First Loading Plate

[0066] 840 Second loading plate

[0067] 910 Temperature Detection Device

[0068] 915 retainer

[0069] 920 Heater

[0070] 950 Vibration Detection Device

[0071] L Rotation axis

[0072] L1 First direction

[0073] L2 Second direction DETAILED DESCRIPTION

[0074] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0075] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to direct connections, but may include indirect connections. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0076] The present invention will be described in detail below by describing exemplary embodiments.

[0077] Figures 1 to 5 A view of a bearing testing device 1 according to the present invention is shown. Figure 1 and Figure 2 The bearing testing device 1 is shown in perspective views from different perspectives. Figure 3 、 Figure 4 and Figure 5 They are a cross-sectional view, a top view, and an exploded view of the bearing testing device 1 , respectively.

[0078] like Figure 1 and Figure 2 As shown, the bearing testing apparatus 1 includes an apparatus housing 100. The apparatus housing 100 has a hollow cavity 101, within which most of the components of the bearing testing apparatus 1 are arranged. The bearing testing apparatus 1 can be positioned on a horizontal surface for testing, with the cavity 101 open upward. As will be described in detail below, the structure of the apparatus housing 100 and the corresponding structures of the other components of the bearing testing apparatus 1 enable at least some of these components, along with the test bearing 200, to be loaded into the cavity 101 using a lifting device (not shown).

[0079] Next, refer to Figures 3 to 5 , describing the other components of the bearing testing device 1.

[0080] like Figure 3 As shown, the test bearing 200 is configured to be mounted in the device housing 100. Specifically, see also Figure 6 The outer ring 210 of the test bearing 200 is fixedly mounted on the inner wall of a generally cylindrical cavity 411 of the bearing connector 400, forming a fixed connection with the bearing connector 400, enabling the bearing connector 400 to rotate synchronously with the outer ring 210 of the test bearing 200. The cavity 411 is open along a first direction L1 (the first direction L1 and the second direction L2 are directions facing oppositely along the rotation axis L), allowing the test bearing 200 to be installed in the cavity 411. Furthermore, the inner ring 320 of the external bearing 300 is fixed to the outer wall of a cylindrical section of the bearing connector 400, forming a fixed connection with the bearing connector 400, enabling the inner ring 320 of the external bearing 300 to rotate synchronously with the bearing connector 400 and the outer ring 210 of the test bearing 200.

[0081] like Figure 3 As shown, the bearing connector 400 is connected to the drive shaft 110 on the side opposite to the cavity 411 along the rotation axis L, so that the bearing connector 400 can be driven by the drive shaft 110 to rotate. For example, the bearing connector 400 is connected to the drive shaft 110 on the side opposite to the cavity 411 along the rotation axis L through a spline fit, wherein the bearing connector 400 is provided with a hole open along the second direction L2 to receive a corresponding mating portion of the drive shaft 110. The drive shaft 110 is then driven to rotate by an external drive device (not shown), such as a spindle motor. To this end, the drive shaft 110 can be spline-fitted to a corresponding shaft component of the external drive device.

[0082] Reference Figure 3 and Figure 6 The outer ring 310 of the outer bearing 300 is fixedly assembled in the outer bearing housing 350, and the outer bearing housing 350 is fixedly mounted in the first central cavity 811 of the first receiving seat 810 (see also Figure 5 ), the first receiving seat 810 is installed in the cavity 101 of the device housing 100 and conforms to the shape of the inner wall of the cavity 101. As a result, when the inner ring 320 of the external bearing can be driven to rotate, the outer ring 310 of the external bearing remains fixed relative to the device housing 100.

[0083] Continue to refer to Figure 3 The test bearing support component 500 is disposed within the device housing 100 and is used to secure the inner ring 220 of the test bearing 200 relative to the device housing 100. Specifically, the test bearing support component 500 has an overall cylindrical shape and includes a first end 511 and a second end 512 facing in opposite directions along the rotation axis L. The first end 511 of the test bearing support component 500 is closer to the test bearing 200 than the second end 512, and the first end 511 of the test bearing support component 500 contacts the inner ring 220 of the test bearing and prevents the inner ring 220 of the test bearing from rotating. The first end 511 of the test bearing support component 500 is also configured to apply axial and radial loads to the inner ring 220 of the test bearing, as described in detail below.

[0084] Continue to refer to Figure 3 The second end 512 of the test bearing support component 500 is received in the intermediate receiving component 600. Specifically, the intermediate receiving component 600 is provided with a receiving hole 610 for receiving the second end 512 of the test bearing support component 500, thereby maintaining the second end 512 of the test bearing support component 500 and making the test bearing support component 500 more stable during testing. A clearance fit can be formed between the second end 512 of the test bearing support component 500 and the receiving hole 610. Furthermore, the intermediate receiving component 600 is further configured to transmit an axial load, i.e., a load in the direction of the rotation axis L, to the test bearing support component 500, thereby allowing the test bearing support component 500 to apply an axial load to the inner ring 220 of the test bearing 200. For example, the second end 512 of the test bearing support component 500 can be provided with a stepped portion extending along the circumferential outer surface of the test bearing support component 500, with a corresponding shoulder portion provided near the receiving hole 610. The step portion and the shoulder portion are in contact with each other, so that the intermediate accommodation component 600 can transmit the axial load to the test bearing support component 500. Figure 3 As shown, the intermediate receiving member 600 is mounted in the second central cavity 821 of the second receiving seat 820 (see also Figure 5). The second receiving seat 820 is installed in the cavity 101 of the device housing 100 and conforms to the shape of the inner wall of the cavity 101. As a result, the second receiving seat 820, the intermediate receiving member 600, and the test bearing support member 500 are all substantially fixed relative to the device housing 100.

[0085] refer to Figure 3 and Figure 4 A first loading plate 830 is further disposed on the side of the first receiving seat 810 opposite to the test bearing support component 500, and a second loading plate 840 is further disposed on the side of the second receiving seat 820 opposite to the test bearing support component 500. Furthermore, the device housing 100 is provided with an axially loading intermediate component 710 at a portion proximate to the second loading plate 840. For example, the device housing 100 is provided with a through hole proximate to the second loading plate 840 and passing through the rotation axis L, and the axially loading intermediate component 710 is disposed through the through hole. For example, an axial loading device (not shown) of an actuator can be disposed outside the device housing 100 and adjacent to the axially loading intermediate component 710. Thus, the axial loading device can apply pressure to the axially loading intermediate component 710 in the direction of the rotation axis L, i.e., apply an axial load to the axially loading intermediate component 710. Thus, the axially loading intermediate component 710 applies an axial load to the second loading plate 840 (e.g., via a central protrusion of the axially loading intermediate component 710 protruding toward the second loading plate 840). The second loading plate 840 applies an axial load to the second receiving seat 820 in a surface-contact manner. The second receiving seat 820 drives the intermediate receiving component 600 to apply an axial load to the test bearing support component 500, and the test bearing support component 500 applies an axial load to the inner ring 220 of the test bearing 200. The above arrangement allows for flexible selection of the axial loading device and convenient placement thereof adjacent to the bearing testing device 1 for testing. The present invention is not limited to the specific form of the axial loading device.

[0086] refer to Figure 4 and Figure 5The bearing testing device 1 further includes a radial loading component 720. The radial loading component 720 is generally cylindrical and extends in a radial direction perpendicular to the rotation axis L. One end of the radial loading component 720 contacts a position between the first end 511 and the second end 512 of the test bearing support member 500, thereby applying a radial load to the test bearing support member 500 (i.e., a load in the radial direction of the test bearing support member 500). According to an embodiment of the present invention, one end of the radial loading component 720 can be attached (e.g., threadedly secured) to a position between the first end 511 and the second end 512 of the test bearing support member 500. A radial loading intermediate component 725 can be disposed at the other end of the radial loading component 720. To this end, a through-hole can be provided in a portion of the device housing 100 proximate to the other end of the radial loading component 720, through which the radial loading intermediate component 725 is disposed. A radial loading device (not shown), such as an actuator, can be disposed outside the device housing 100 and adjacent to the radial loading intermediate component 725. Thus, the radial loading device can apply a radial load to the radial loading intermediate component 725, which in turn applies a radial load to the radial loading component 720 (e.g., via a central protrusion of the radial loading intermediate component 725 that protrudes toward the radial loading component 720), and the radial loading component 720 applies a radial load to the test bearing support component 500, which in turn applies a radial load to the inner ring 220 of the test bearing 200. Similarly, the above arrangement allows for flexible selection of the radial loading device and convenient placement thereof adjacent to the bearing testing device 1 for testing. The present invention is not limited to the specific form of the radial loading device.

[0087] Next, refer to Figure 6 and Figure 7 , specifically describing the installation method of the test bearing 200 in the bearing testing device 1.

[0088] Figure 6 As further shown, the outer ring 210 of the test bearing 200 is fixed to the inner wall of the generally cylindrical cavity 411 of the bearing connector 400, enabling the bearing connector 400 to rotate synchronously with the outer ring 210 of the test bearing 200. The bearing connector 400 is provided with a third stop shoulder 453 near the bottom of the cavity 411. The third stop shoulder 453 is configured to abut against the outer ring 210 of the test bearing 200. Consequently, when the inner ring 220 of the test bearing 200 is subjected to an axial load from the test bearing support component 500, the outer ring 210 of the test bearing 200 applies axial pressure to the third stop shoulder 453. It should be noted that the bottom surface of the cavity 411 does not contact the inner ring 220 and rollers of the test bearing 200. Therefore, during testing, the inner ring 220 of the test bearing 200 remains stationary while the outer ring 210 of the test bearing 200 rotates, and the rollers of the test bearing 200 roll accordingly.

[0089] In addition, if Figure 6 As shown, the inner ring 320 of the external bearing 300 is fixed to the outer wall of a cylindrical section of the bearing connector 400, allowing the inner ring 320 of the external bearing 300 to rotate synchronously with the bearing connector 400 and the outer ring 210 of the test bearing 200. The bearing connector 400 is also provided with a first stop shoulder 451 and a second stop shoulder 452, which respectively abut against the inner ring 320 of the external bearing 300 on either axial side. This arrangement ensures more stable operation of the inner ring 320 of the external bearing 300, thereby improving the testing process of the test bearing 200. For example, it provides more stable drive for the outer ring 210 of the test bearing 200 and enables the test data to more clearly reflect the properties of the test bearing 200.

[0090] like Figure 6 As shown, according to an embodiment of the present invention, the bearing connector 400 may be composed of a first portion 410 and a second portion 420. Specifically, the first portion 410 may be an annular component, and the inner ring 320 of the external bearing 300 is sleeved on a radially outer section of the first portion 410, and a portion of the first portion 410 also forms a first stop shoulder 451. The second portion 420 may be an annular component or composed of multiple components that can form an annular shape, and the second portion 420 is configured to be sleeved and fastened on the radial outer side of the first portion 410. To this end, a radially outwardly open annular groove may be provided at a corresponding position of the first portion 410, and a radially inward protrusion that can be received in the annular groove may be provided on the radial inner side of the second portion 420. In addition, a portion of the second portion 420 forms a second stop shoulder 452. Thus, the bearing connector 400 configured as described above securely connects the outer ring 210 of the test bearing 200 and the inner ring 320 of the external bearing 300 to each other, so that the three are fixed to each other and driven to rotate synchronously. Also refer to Figure 7 , which specifically shows the coaxial arrangement of the test bearing 200 , the bearing connector 400 and the external bearing 300 .

[0091] In addition, if Figure 6 Specifically, test bearing 200 is arranged radially inward of inner ring 320 of outer bearing 300. A center plane 301 of outer bearing 300, which is orthogonal to rotation axis L, is coplanar with a center plane 201 of test bearing 200, which is also orthogonal to rotation axis L. This arrangement of outer bearing 300 and test bearing 200 avoids applying excessive torque to other related components in bearing testing apparatus 1, thereby achieving an improved driving effect on test bearing 200.

[0092] Figure 6The structure of the first end 511 of the test bearing support component 500 is also shown in detail. The first end 511 has a radial loading portion 520, which is generally formed as a column (e.g., a cylinder) extending in the direction of the rotation axis L. The radial loading portion 520 extends from the main body of the test bearing support component 500 into the radial inner side of the inner ring 220 of the test bearing 200, and is received on the radial inner side of the inner ring 220 of the test bearing 200. For example, Figure 6 As shown, the radial loading portion 520 may extend the entire axial length of the inner ring 220 of the test bearing 200. According to an embodiment of the present invention, the radial loading portion 520 may be a cylinder having a partial circumferential surface that is a cylindrical surface, wherein only the partial circumferential surface of the radial loading portion 520 applies a load to the inner ring 220 of the test bearing 200, i.e., serves as a loading surface 521 (see also FIG. Figure 7 ), while the remaining circumferential surface of the radial loading portion 520 does not participate in applying the radial load to the inner ring 220 of the test bearing 200. In this way, the specific distribution of the load applied to the test bearing 200 can be adjusted according to the application.

[0093] The first end 511 of the test bearing support member 500 further has a fourth stop shoulder 554. The fourth stop shoulder 554 is configured to abut against the inner ring 220 of the test bearing 200 to apply an axial load to the test bearing 200. Figure 6 As shown, the fourth shoulder portion 554 may not be formed as a complete ring, but may instead have a notch. The temperature sensing device 910 may pass through the notch and access the inner ring 220 of the test bearing 200, thereby contacting the inner ring 220 of the test bearing 200 and measuring its temperature in real time or according to a predetermined setting. This contact position is relatively close to the friction zone and the load zone, making it easier to capture the highest temperature of the test bearing 200. It should be noted that Figure 6 In the figure, the temperature detection device 910 contacts the axial side surface of the inner ring 220 of the test bearing 200. However, according to an embodiment of the present invention not shown, for example, by adjusting a part of the structure of the radial loading portion 520, the temperature detection device 910 can also contact other surfaces of the inner ring 220 of the test bearing 200, such as the radial inner surface, to obtain the temperature data of the test bearing 200.

[0094] Also refer to Figures 1 to 5, which shows a groove 530 arranged on the test bearing support component 500 and extending in the direction of the rotation axis L. The groove 530 extends from a position between the first end 511 and the second end 512 of the test bearing support component 500 to the first end 511 of the test bearing support component 500, and the temperature detection device 910 is fixedly arranged in the groove 530. Specifically, the elongated temperature detection device 910 is arranged along the groove 530, so as to contact the inner ring 220 of the test bearing 200 at the first end 511 of the test bearing support component 500. Thus, cables (such as power lines, communication lines, etc.) extending from the temperature detection device 910 can extend from the groove 530 and extend outside the equipment housing 100, thereby facilitating installation and control. In addition, the temperature detection device 910 can be fixedly retained on the test bearing support component 500 by a retainer 915 to prevent vibration relative to the test bearing support component 500. For example, as Figure 5 As shown, the retainer 915 may include multiple screws and corresponding mating parts, wherein one screw is installed on the test bearing support component 500 and contacts the temperature detection device 910, and can change the position of the screw relative to the test bearing support component 500 by rotation, thereby pressing the temperature detection device 910 into the groove 530.

[0095] refer to Figure 1 and Figure 4 , which shows a vibration detection device 950 fixedly mounted on the test bearing support component 500. This position of the vibration detection device 950 makes it relatively easy to install the vibration detection device 950 and connect it to the wires. Moreover, since the test bearing support component 500 can be affected by the test bearing 200 and produce relatively significant vibrations during the test, this position of the vibration detection device 950 enables improved measurement data to be obtained. In addition, as Figure 1 and Figure 4 As shown, vibration detection device 950 is positioned near test bearing 200 and is therefore more sensitive to the operating status of test bearing 200, facilitating timely testing halts or adjustments based on different test conditions (e.g., impending bearing failure). According to an embodiment of the present invention, vibration detection device 950 may be an accelerometer to ensure acquisition of high-frequency signals when test bearing 200 is operating at high speeds.

[0096] refer to Figure 5 and Figure 7, which also shows heater receiving holes 812 arranged around the first central cavity 811 of the first accommodating seat 810. According to an embodiment of the present invention, the first accommodating seat 810 is provided with two elongated heater receiving holes 812, which are respectively arranged on opposite sides of the first central cavity 811. A heater 920 is provided in each heater receiving hole 812. Since the test bearing 200 is located at the center of the first central cavity 811, the heater 920 provided above can effectively heat the test bearing 200, thereby measuring the performance of the test bearing 200 under different thermal environments. When the heater 920 and the temperature detection device 910 are provided, the bearing testing system 1 can have a temperature closed-loop control system to perform temperature control more accurately.

[0097] Thus, the bearing testing device 1 according to the present invention integrates a drive transmission system, a loading system, a temperature system, and a data acquisition system, thereby enabling more flexible bearing testing. Furthermore, the bearing testing device 1 is compact and more easily capable of performing high-speed bearing testing.

[0098] References such as Figures 1 to 5 , which shows a first lifting portion 815 at the top of the first receiving seat 810 and a second lifting portion 825 at the top of the second receiving seat 820. Specifically, the first lifting portion 815 and the second lifting portion 825 are both lifting holes that can be lifted by lifting equipment. Thus, all components, including the first receiving seat 810 and the second receiving seat 820, and between them can be assembled together and then placed into the cavity 101 of the device housing 100 using the lifting equipment, facilitating the test preparation process.

[0099] Specifically, before testing, the axially loading intermediate component 710, the radially loading intermediate component 720, the first loading plate 830, and the second loading plate 840 can be pre-placed in the cavity 101 of the device housing 100. Meanwhile, the test bearing 200 and the external bearing 300 can be secured to the bearing connector 400. Then, the external bearing housing 350 is sleeved onto the external bearing 300, the first end 511 of the test bearing support component 500 is positioned radially inward of the inner ring 220 of the test bearing 200, and the second end 521 of the test bearing support component 500 is positioned within the receiving hole 610 of the intermediate housing component 600. The radially loading component 720 can be secured to the test bearing support component 500. Next, the external bearing housing 350 and the intermediate housing component 600 are installed in the first central cavity 811 of the first housing 810 and the second central cavity 821 of the second housing 820, respectively. Thus, the components from the first housing 810 to the second housing 820 are assembled together. Finally, the assembled components are placed into the cavity 101 of the device housing 100 using a hoisting device to prepare for testing. Compared to the existing process of preparing for bearing testing, the entire test preparation process is simpler using the bearing testing device 1 according to the present invention.

[0100] The exemplary implementation of the bearing testing equipment proposed in the present invention is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present invention, various variations and modifications can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present invention can be combined in various ways without exceeding the scope of protection of the present invention.

Claims

1. A bearing testing device for testing a test bearing, comprising: Device housing (100); an external bearing (300), an outer ring (310) of the external bearing (300) being fixed relative to the device housing (100); a bearing connector (400) configured to be fixedly connected to the inner ring (320) of the external bearing and the outer ring (210) of the test bearing, such that the inner ring (320) of the external bearing, the bearing connector (400) and the outer ring (210) of the test bearing are fixed to each other to be driven to rotate synchronously; A test bearing support component (500) is provided, wherein the test bearing support component (500) is configured to fix the inner ring (220) of the test bearing relative to the device housing (100).

2. The bearing testing device according to claim 1, wherein: The test bearing (200) is configured to be arranged radially inward of the inner ring (320) of the external bearing, and the center plane (301) of the external bearing (300) perpendicular to the rotation axis (L) is coplanar with the center plane (201) of the test bearing (200) perpendicular to the rotation axis (L).

3. The bearing testing device according to claim 1, wherein: The bearing connector (400) is provided with a first shoulder portion (451) and a second shoulder portion (452) respectively abutting against the axial sides of the inner ring (320) of the external bearing, and a third shoulder portion (453) configured to abut against the axial side of the outer ring (210) of the test bearing.

4. The bearing testing device according to any one of claims 1 to 3, wherein: The test bearing support component (500) has a first end (511) and a second end (512) facing oppositely to each other. The test bearing support component (500) has a radial loading portion (520) and a fourth shoulder portion (554) at the first end (511). The radial loading portion (520) is configured to be received radially inside the inner ring (220) of the test bearing to apply a radial load to the test bearing (200). The fourth shoulder portion (554) is configured to abut against an axial side of the inner ring (220) of the test bearing to apply an axial load to the test bearing (200).

5. The bearing testing device according to claim 4 further comprises an intermediate accommodating component (600) installed in the device housing (100), the intermediate accommodating component (600) being provided with a receiving hole (610) for accommodating the second end (512) of the test bearing support component, and the intermediate accommodating component (600) being configured to transmit axial load to the test bearing support component (500).

6. The bearing testing device according to claim 5, further comprising a first receiving seat (810) and a second receiving seat (820) installed in the device housing (100), wherein: The first accommodating seat (810) is provided with a first central cavity (811), and the first central cavity (811) accommodates the external bearing (300); the second accommodating seat (820) is provided with a second central cavity (821), and the second central cavity (821) accommodates the intermediate accommodating component (600); the first accommodating seat (810) and the second accommodating seat (820) are also respectively provided with a first hoisting portion (815) and a second hoisting portion (825) configured to be hoisted by a hoisting device.

7. The bearing testing device according to claim 4 further includes a radial loading component (720) installed in the device housing (100), wherein the radial loading component (720) is attached to a position between the first end (511) and the second end (512) of the test bearing support component (500) and is configured to apply a load to the test bearing support component (500) along the radial direction of the test bearing support component (500).

8. The bearing testing device according to claim 4, wherein: The test bearing support component (500) is provided with a groove (530) extending from a position between a first end (511) and a second end (512) of the test bearing support component (500) to the first end (511) of the test bearing support component. A temperature detection device (910) is fixedly disposed in the groove (530) and contacts the inner ring (220) of the test bearing at the first end (511) of the test bearing support component to detect the temperature of the inner ring (220) of the test bearing.

9. The bearing testing device according to claim 4, further comprising a vibration detection device (950), wherein: The vibration detection device (950) is fixedly arranged on the test bearing support component (500), and / or the vibration detection device (950) is an accelerometer.

10. The bearing testing device according to any one of claims 1 to 3, further comprising a first receiving seat (810), wherein: The first accommodating seat (810) is provided with a first central cavity (811) and a heater receiving hole (812) arranged around the first central cavity (811), the external bearing (300) is arranged in the first central cavity (811), and the heater (920) is arranged in the heater receiving hole (812).

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