Dynamic load test device for roller bearing

Abstract

The utility model discloses a dynamic load test device used for a roller bearing, comprising a bearing pedestal which is in transmission connection with a driving part and is driven by the driving part to apply pressure to a friction plate, the friction plate reciprocates along the horizontal direction, the bearing pedestal is provided with an avoiding groove whose size is larger than that of a bearing to be tested, and the bearing pedestal is provided with a bearing to be tested; a first shaft hole and a second shaft hole which are communicated with the avoiding groove are formed in the two sides of the avoiding groove; the first shaft sleeve is arranged in the first shaft hole, the axial length of the first shaft sleeve is consistent with that of the first shaft hole, and the first shaft sleeve abuts against one end of an inner ring of the to-be-detected bearing; the second shaft sleeve is arranged in the second shaft hole, the axial length of the second shaft sleeve is smaller than or equal to that of the second shaft hole, and the second shaft sleeve abuts against the other end of the inner ring of the to-be-measured bearing; and the test shaft is used for supporting a bearing to be tested, and two ends of the test shaft penetrate through the first shaft sleeve and the second shaft sleeve and are locked by the first locking piece and the second locking piece respectively. The dynamic load test device for the roller bearing provided by the utility model can be suitable for bearings with different sizes, and the test cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a dynamic load test device for a roller bearing. Background Art

[0002] At present, the application of roller bearings is becoming more and more extensive. Through improved design, roller bearings suitable for various working conditions have been developed. After the trial production of this type of bearing, it is necessary to conduct a dynamic load test to verify it to ensure that the new sample can meet the working requirements.

[0003] As Figure 1 shown, in the prior art, the test device for a roller bearing is generally an integral structure of a base and a tooling bracket. The bearing to be tested 300 is installed in the avoidance groove 101 of the bearing seat 100. The two ends of the bearing seat 100 are provided with holes, and the test shaft 200 connects the bearing seat 100 and the bearing to be tested 300. The two ends of the test shaft 200 are fixed by two locking nuts 400. When replacing the bearing to be tested 300, since the inner diameter size of the bearing will change, the sizes of the test shaft 200 and the avoidance groove 101 of the bearing seat 100 need to be adjusted. This type of structure can only directly replace the entire set of test tooling. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dynamic load test device for a roller bearing, which can be used for testing various types of bearings by replacing the test shaft and the shaft sleeve, thereby reducing costs.

[0005] Based on the above problems, the technical solution provided by the utility model is as follows:

[0006] A dynamic load test device for a roller bearing, comprising:

[0007] A bearing seat, which is in transmission connection with a driving component and presses against a friction plate under the drive of the driving component. The friction plate reciprocates horizontally. An avoidance groove larger than the bearing to be tested is provided on the bearing seat, and a first shaft hole and a second shaft hole communicating with the avoidance groove are provided on both sides of the avoidance groove;

[0008] A first shaft sleeve, which is arranged in the first shaft hole and has an axial length consistent with that of the first shaft hole. The first shaft sleeve abuts against one end of the inner ring of the bearing to be tested;

[0009] A second shaft sleeve, which is arranged in the second shaft hole and has an axial length less than or equal to that of the second shaft hole. The second shaft sleeve abuts against the other end of the inner ring of the bearing to be tested;

[0010] A test shaft, which is used to support the bearing to be tested. Its two ends are inserted into the first shaft sleeve and the second shaft sleeve respectively, and are locked by a first locking member and a second locking member respectively.

[0011] In some of these embodiments, the first locking member and the second locking member are respectively threadedly connected to the test shaft.

[0012] In some of these embodiments, a gasket is provided between the first locking member and the first shaft sleeve, and the size of the gasket is larger than the first shaft hole.

[0013] In some of these embodiments, the size of the second locking member is smaller than the second shaft hole.

[0014] In some of these embodiments, the driving component is a hydraulic cylinder.

[0015] In some of these embodiments, the bearing seat is provided with a mounting hole for connecting the driving component.

[0016] In some of these embodiments, the first shaft sleeve and the second shaft sleeve are respectively in interference fit with the bearing seat.

[0017] Compared with the prior art, the advantages of the present utility model are:

[0018] (1) By replacing the test shaft and the shaft sleeve, the test device can be used for testing various different types of bearings, improving the applicability of the test device and reducing the test cost compared with replacing the entire test device.

[0019] (2) The length of the second shaft sleeve is less than or equal to the second shaft hole, facilitating the second locking member to extend into the second shaft hole to abut against the second shaft sleeve. A gasket is provided between the first locking member and the first shaft sleeve, which can prevent the test shaft from axially moving and improve the test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. The drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a dynamic load test device for a roller bearing in the prior art;

[0022] Figure 2 It is a schematic structural diagram of an embodiment of the dynamic load test device for a roller bearing of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the use state of an embodiment of the present utility model;

[0024] Wherein:

[0025] 100, bearing seat; 101, avoidance groove; 200, test shaft; 300, bearing to be tested; 400, locking nut;

[0026] 1. Bearing seat; 1-1. Avoidance groove; 1-2. First shaft hole; 1-3. Second shaft hole; 1-4. Mounting hole;

[0027] 2. The first sleeve

[0028] 3. Second sleeve;

[0029] 4. Test axis;

[0030] 5. Bearing to be tested

[0031] 6. A first locking member;

[0032] 7. A second locking member;

[0033] 8. Gasket;

[0034] 9. Friction plate;

[0035] 10. Driving components. DETAILED DESCRIPTION

[0036] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the utility model and are not limited to the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0037] like Figure 2 and Figure 3 As shown, an embodiment of the utility model is provided, which provides a dynamic load test device for a roller bearing, including a bearing seat 1, a first sleeve 2 and a second sleeve 3 arranged in the bearing seat 1, and a test shaft 4 inserted into the first sleeve 2 and the second sleeve 3.

[0038] The bearing seat 1 is connected to the driving component 10 and applies pressure to the friction plate 9 under the drive of the driving component 10, wherein the friction plate 9 reciprocates in the horizontal direction, and the reciprocating movement of the friction plate 9 drives the outer ring of the bearing to roll until the end of its service life. The bearing seat 1 is provided with an avoidance groove 1-1 whose size is larger than the bearing 5 to be tested, and a first shaft hole 1-2 and a second shaft hole 1-3 connected to the avoidance groove 1-1 are provided on both sides of the avoidance groove 1-1.

[0039] The first sleeve 2 is arranged in the first axial hole 1-2 and has an axial length consistent with the first axial hole 1-2. The first sleeve 2 is interference fit with the bearing seat 1 and abuts against one end of the inner ring of the bearing 5 to be tested.

[0040] The second bushing 3 is arranged in the second shaft hole 1-3 and its axial length is less than or equal to that of the second shaft hole 1-3. The second bushing 3 is in interference fit with the bearing seat 1 and abuts against the other end of the inner ring of the bearing under test 5.

[0041] The test shaft 4 is used to support the bearing under test 5. Its two ends are respectively inserted into the first bushing 2 and the second bushing 3 and are locked by the first locking member 6 and the second locking member 7 respectively. Among them, the first locking member 6 and the second locking member 7 are nuts and are respectively threadedly connected to the test shaft 4.

[0042] In this example, a gasket 8 is provided between the first locking member 6 and the first bushing 2. The size of the gasket 8 is larger than that of the first shaft hole 1-2, which can prevent the test shaft 4 from axially moving towards the second shaft hole 1-3.

[0043] In this example, the size of the second locking member 7 is smaller than that of the second shaft hole 1-3. Since the size of the relief groove 1-1 is larger than that of the bearing under test 5, there is a gap between one end of the bearing under test 5 close to the second shaft hole 1-3 and the relief groove 1-1. The second locking member 7 extends into the second shaft hole 1-3 to abut against the second bushing 3, and the second bushing 3 abuts against the inner ring of the bearing under test 5. One end of the bearing under test 5 close to the first shaft hole 1-2 abuts against the bearing seat 1 to ensure the structural stability and prevent the test shaft 4 from axially moving.

[0044] In this example, the driving component 10 is a hydraulic cylinder on a press. To facilitate the connection between the bearing seat 1 and the driving component 10, an installation hole 1-4 for connecting the driving component 10 is provided on the bearing seat 1.

[0045] The working principle of the present utility model is as follows:

[0046] Install the first bushing 2 in the first shaft hole 1-2, install the second bushing 3 in the second shaft hole 1-3, place the bearing under test 5 in the relief groove 1-1, then pass the test shaft 4 through the first bushing 2, the bearing under test 5 and the second bushing 3, adjust the position of the second bushing 3 according to the gap between the second bushing 3 and the bearing under test 5 to make it abut against the bearing under test 5, and finally lock the test shaft 4 with the first locking member 6 and the second locking member 7. During the test, the bearing seat 1 is driven by the hydraulic cylinder of the press to press against the friction plate 9. The friction plate 9 drives the outer ring of the bearing to rotate during the left-right reciprocating movement until the end of the life, and the dynamic load test of the complete bearing is carried out.

[0047] In summary, the test device can be applied to the tests of bearings of different sizes, has strong versatility, is convenient for replacing the bearing under test, and reduces the production cost.

[0048] The above examples are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A dynamic load test device for roller bearings, characterized in that: include: A bearing seat is connected to the driving component in a transmission manner and applies pressure to the friction plate under the drive of the driving component. The friction plate reciprocates in the horizontal direction. The bearing seat is provided with an avoidance groove whose size is larger than the bearing to be tested. Both sides of the avoidance groove are provided with a first shaft hole and a second shaft hole connected to the avoidance groove. A first sleeve, which is disposed in the first axial hole and has an axial length consistent with that of the first axial hole, and the first sleeve abuts against one end of the inner ring of the bearing to be tested; A second sleeve, which is disposed in the second axial hole and has an axial length less than or equal to that of the second axial hole, and the second sleeve abuts against the other end of the inner ring of the bearing to be tested; The test shaft is used to support the bearing to be tested, and its two ends are inserted into the first sleeve and the second sleeve, and are locked by the first locking member and the second locking member respectively.

2. The dynamic load test device for roller bearings according to claim 1, characterized in that: The first locking member and the second locking member are respectively threadedly connected to the test shaft.

3. The dynamic load test device for roller bearings according to claim 2, characterized in that: A gasket is provided between the first locking member and the first shaft sleeve, and the size of the gasket is larger than the first shaft hole.

4. The dynamic load test device for roller bearings according to claim 3, characterized in that: The second locking member has a smaller size than the second axial hole.

5. The dynamic load test device for roller bearings according to claim 1, characterized in that: The driving component is a hydraulic cylinder.

6. The dynamic load test device for roller bearings according to claim 5, characterized in that: The bearing seat is provided with a mounting hole for connecting the driving component.

7. The dynamic load test device for roller bearings according to claim 1, characterized in that: The first sleeve and the second sleeve are respectively interference fit with the bearing seat.

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