Fatigue life testing device for supporting type roller bearing

Abstract

The utility model relates to a fatigue life testing device for a supporting type roller bearing. The fatigue life testing device comprises two fixed seats, two positioning devices and a rotating wheel, wherein the two fixing seats are oppositely arranged; the two positioning devices are correspondingly arranged at the positions of the fixed seats, and are suitable for mounting and axially limiting the supporting type roller bearing; the rotating wheel is arranged between the two positioning devices and abuts against the outer ring of the supporting type roller bearing. When the rotating wheel rotates, the two supporting type roller bearings are driven to rotate, and fatigue testing is carried out on the supporting type roller bearings; the bearing type roller bearing is axially limited through the positioning device, that is, the bearing type roller bearing can only rotate and does not axially move, and the axial load generated by the test can be reduced through the tool, so that the axial movement of the bearing type roller bearing during the test is limited, and the test efficiency is improved. In this way, the fatigue life time of the supporting type roller bearing can be obtained more practically.

Description

Technical Field

[0001] The utility model relates to a bearing fatigue life testing device, in particular to a support type roller bearing fatigue life testing device. Background Art

[0002] The support type roller bearing has a roller, an outer ring, a cage and an inner ring;

[0003] When performing fatigue life tests on support type roller bearings, the conventional testing method causes the support type roller bearings to slide left and right due to the operation of the driving wheel, that is, the support type roller bearings undergo axial movement. This testing method does not conform to the actual working conditions of the support type roller bearings, resulting in inaccurate test results.

[0004] In summary, how to limit the axial movement of the support type roller bearing during testing has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to limit the axial movement of the support type roller bearing during testing;

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] The utility model is a fatigue life test device for a support type roller bearing, comprising: two fixed seats, which are arranged relative to each other; two positioning devices, which are arranged at each of the fixed seats and are suitable for installing and axially limiting the support type roller bearing; a rotating wheel, which is arranged between the two positioning devices and abuts against the outer ring of the support type roller bearing; when the rotating wheel rotates, the two support type roller bearings are driven to rotate, and fatigue test is performed on the support type roller bearing;

[0008] In this solution, the support type roller bearing is axially limited by a positioning device, that is, the support type roller bearing can only rotate but not move axially. The axial load generated by the test can be reduced by the tooling, thereby limiting the axial movement of the support type roller bearing during the test.

[0009] In order to specifically explain the specific structure of the positioning device, the positioning device adopted by the utility model includes: a bolt part, whose axial direction is sequentially set as a circular structure, a first limiting part, and a screw part; a nut part, whose axial side is set as a circular structure, a second limiting part, and a threaded hole penetrating the circular structure and the second limiting part; wherein the circular structure is placed in a U-shaped groove opened in the fixing seat; the middle part of the support type roller bearing is passed through by the screw part, and is limited between the first limiting part and the second limiting part; the end of the screw part passes through the threaded hole and is threadedly connected with the threaded hole; by rotating the nut part, the outer sides of the first limiting part and the second limiting part are pressed against the fixing seat;

[0010] In the present scheme, the screw part and the nut part are connected by a threaded locking fit, and are placed in the corresponding U-shaped groove of the fixing seat through a circular structure, which is convenient for the cooperation of the positioning device and the fixing seat; the screw part is for the inner ring of the supporting roller bearing to pass through, and the supporting roller bearing is axially limited by the first limiting part and the second limiting part. By rotating the nut part, the spacing between the first limiting part and the second limiting part can be adjusted, and then it can be abutted against the inner side of the fixing seat, which can also achieve axial limitation of the first limiting part and the second limiting part.

[0011] How to realize that only the outer ring of the support type roller bearing can rotate, the utility model adopts that the inner sides of the first limiting part and the second limiting part are both provided with raised end rings; the end rings abut against the inner ring of the support type roller bearing;

[0012] The end ring is against the inner ring of the support type roller bearing, so that the support type roller bearing can only rotate with the outer ring and the rotating wheel.

[0013] In order to monitor the vibration of the bolt-type roller bearing, the utility model adopts the fixing seat to be provided with a vibration detection unit, and the detection end thereof passes through the fixing seat and abuts against the nut portion.

[0014] When the support type roller bearing vibrates, the vibration force will be transmitted to the bolt part and the nut part. The vibration detection unit is fixed on the fixed seat, and the detection end is pressed against the bolt part and the nut part. In this way, the vibration of the support type roller bearing can be monitored. When the vibration exceeds the preset value, the machine will be stopped for inspection to avoid damage to the tooling.

[0015] In order to detect the internal temperature of the support type roller bearing when it rotates, the utility model adopts that the bolt portion has an axial through hole; the temperature sensor is placed in the through hole and is suitable for detecting the temperature of the support type roller bearing when it rotates;

[0016] By placing a temperature sensor in the through hole, the temperature inside the support roller bearing during the test rotation can be detected; for example, if the detected temperature is too high and exceeds 80 degrees, the tooling will shut down.

[0017] The beneficial effects of the utility model are as follows: the utility model is a support type roller bearing fatigue life testing device, which uses a positioning device to axially limit the support type roller bearing, that is, the support type roller bearing can only rotate but not move axially, and the axial load generated by the test can be reduced by the tooling, thereby limiting the axial movement of the support type roller bearing during the test, so that the fatigue life time of the support type roller bearing can be obtained more realistically. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a bottom view of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model;

[0021] Figure 3 It is a side sectional view of the utility model;

[0022] In the figure: 1-fixed seat, 11-2-positioning device, 21-bolt part, 22-circular structure, 23-first limiting part, 24-screw part, 25-nut part, 26-second limiting part, 27-end ring, 28-through hole, 3-support type roller bearing, 4-rotating wheel, 5-vibration detection unit, 6-temperature sensor. DETAILED DESCRIPTION

[0023] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0024] like Figure 1-2 As shown, the utility model is a fatigue life test device for a support type roller bearing, comprising: two fixing seats 1, which are arranged relative to each other; two positioning devices 2, which are arranged at each of the fixing seats 1 and are suitable for installing and axially limiting the support type roller bearing 3; a rotating wheel 4, which is arranged between the two positioning devices 2 and abuts against the outer ring of the support type roller bearing 3; when the rotating wheel 5 rotates, the two support type roller bearings 3 are driven to rotate, and the fatigue test of the support type roller bearing 3 is performed;

[0025] In this solution, the support type roller bearing is axially limited by a positioning device, that is, the support type roller bearing can only rotate but not move axially. The axial load generated by the test can be reduced by the tooling, thereby limiting the axial movement of the support type roller bearing during the test.

[0026] like Figure 3 As shown, in order to specifically illustrate the specific structure of the positioning device, the positioning device 2 adopted by the utility model includes: a bolt portion 21, whose axial direction is sequentially set as a circular structure 22, a first limiting portion 23, and a screw portion 24; a nut portion 25, whose axial side is set as a circular structure 22, a second limiting portion 26, and a threaded hole passing through the circular structure 22 and the second limiting portion 26; wherein the circular structure 22 is placed in the U-shaped groove 11 opened in the fixing seat 1; the middle part of the support type roller bearing 3 is passed by the screw portion 24, and is limited between the first limiting portion 23 and the second limiting portion 26; the end of the screw portion 24 passes through the threaded hole and is threadedly connected with the threaded hole; by rotating the nut portion 25, the outer sides of the first limiting portion 23 and the second limiting portion 26 are pressed against the fixing seat 1;

[0027] In the present scheme, the screw part and the nut part are connected by a threaded locking fit, and are placed in the corresponding U-shaped groove of the fixing seat through a circular structure, which is convenient for the cooperation of the positioning device and the fixing seat; the screw part is for the inner ring of the supporting roller bearing to pass through, and the supporting roller bearing is axially limited by the first limiting part and the second limiting part. By rotating the nut part, the spacing between the first limiting part and the second limiting part can be adjusted, and then it can be abutted against the inner side of the fixing seat, which can also achieve axial limitation of the first limiting part and the second limiting part.

[0028] like Figure 3 As shown, how to realize that the support type roller bearing can only rotate the outer ring, the utility model adopts that the inner sides of the first limiting part 23 and the second limiting part 26 are both provided with a raised end ring 27; the end ring 27 is against the inner ring of the support type roller bearing 3;

[0029] The end ring is against the inner ring of the support type roller bearing, so that the support type roller bearing can only rotate with the outer ring and the rotating wheel.

[0030] like Figure 1-2 As shown, in order to monitor the vibration of the bolt-type roller bearing, the utility model adopts the fixing seat 1 to be provided with a vibration detection unit 5, and its detection end passes through the fixing seat 1 and abuts against the nut part 25 or the bolt part 21.

[0031] When the support type roller bearing vibrates, the vibration force will be transmitted to the bolt part and the nut part. The vibration detection unit is fixed on the fixed seat, and the detection end is pressed against the bolt part and the nut part. In this way, the vibration of the support type roller bearing can be monitored. When the vibration exceeds the preset value, the machine will be stopped for inspection to avoid damage to the tooling.

[0032] like Figure 3 As shown, in order to detect the internal temperature of the support type roller bearing when it rotates, the utility model adopts that the bolt portion 21 has an axial through hole 28; the temperature sensor 6 is placed in the through hole 28 and is suitable for detecting the temperature of the support type roller bearing 3 when it rotates;

[0033] By placing a temperature sensor in the through hole, the temperature inside the support roller bearing during the test rotation can be detected; for example, if the detected temperature is too high and exceeds 80 degrees, the tooling will shut down.

[0034] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A support type roller bearing fatigue life testing device, characterized in that: include: Two fixed seats, two positioning devices, and a rotating wheel; wherein the two fixed seats are arranged relative to each other; the two positioning devices are correspondingly arranged at each of the fixed seats, which are suitable for installing and axially limiting the supporting roller bearings; the rotating wheel is arranged between the two positioning devices and abuts against the outer ring of the supporting roller bearings; when the rotating wheel rotates, the two supporting roller bearings are driven to rotate, and fatigue testing is performed on the supporting roller bearings.

2. A support type roller bearing fatigue life testing device according to claim 1, characterized in that: The positioning device comprises: The bolt portion is sequentially configured in the axial direction as a circular structure, a first limiting portion, and a screw portion; A nut portion, one axial side of which is provided with a circular structure, a second limiting portion, and a threaded hole penetrating the circular structure and the second limiting portion; Wherein, the circular structure is placed in the U-shaped groove opened in the fixing seat; The middle part of the support type roller bearing is for the screw part to pass through and is limited between the first limiting part and the second limiting part; The end of the screw rod passes through the threaded hole and is threadedly connected to the threaded hole; By rotating the nut portion, the outer sides of the first limiting portion and the second limiting portion are pressed against the fixing seat.

3. A support type roller bearing fatigue life testing device according to claim 2, characterized in that: The first limiting portion and the second limiting portion are both provided with raised end rings on their inner sides; The end ring abuts against the inner ring of the support type roller bearing.

4. A support type roller bearing fatigue life testing device according to claim 2, characterized in that: The fixing seat is provided with a vibration detection unit, and a detection end of the vibration detection unit passes through the fixing seat and abuts against the nut part or the bolt part.

5. A support type roller bearing fatigue life testing device according to claim 2, characterized in that: The bolt portion has an axial through hole; A temperature sensor is placed in the through hole and is suitable for detecting the temperature of the support type roller bearing when it rotates.

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