Tool for testing fatigue life of bolt type roller bearing

Abstract

The utility model relates to a bolt type roller bearing fatigue life test tool comprising two support tools which are oppositely arranged; the clamping tools are fixedly arranged at the positions of the supporting tools, and each clamping tool is provided with a first limiting disc and a second limiting disc which are oppositely arranged; the driving wheel is arranged between the two supporting tools; the first limiting disc and the second limiting disc are arranged to limit the axial movement of the bolt-type roller bearing during detection, so that the test is closer to the actual working condition, and the bolt-type roller bearing is prevented from sliding left and right due to the operation of the driving wheel during the fatigue life test. And the generated axial load is subjected to fixed torque locking through the tool structure, so that part of the bearing load can be reduced.

Description

Technical Field

[0001] The utility model relates to a bearing fatigue life test tool, in particular to a bolt type roller bearing fatigue life test tool. Background Art

[0002] The bolt type roller bearing has a roller, an outer ring, a cage, a bolt shaft coaxially passing through the cage, and an inner ring end ring is arranged on the other side of the cage;

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

[0004] In summary, how to limit the axial movement of bolt-type roller bearings 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 bolt-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 discloses a fatigue life test tool for a bolt-type roller bearing, comprising: two supporting tools, which are arranged opposite to each other; a clamping tool, which is fixedly arranged at each of the supporting tools and has a first limiting plate and a second limiting plate arranged opposite to each other; a driving wheel, which is arranged between the two supporting tools; when the bolt-type roller bearing rotates and is axially limited between the first limiting plate and the second limiting plate, the driving wheel rotates against the outer ring of the bolt-type roller bearing, and drives the bolt-type roller bearing to rotate for fatigue testing;

[0008] In this solution, the driving wheel is arranged in the middle, with supporting fixtures on both sides, and a clamping fixture is arranged on each supporting fixture. The first limit plate and the second limit plate on the clamping fixture are used to limit the axial movement of the bolt-type roller bearing, but do not limit the rotation of the bolt-type roller bearing; the driving wheel is abutted against the outer ring of the bolt-type roller bearing, and the driving wheel rotates to make the bolt-type roller bearing rotate, and a fatigue life test is performed; by setting the first limit plate and the second limit plate to limit the axial movement of the bolt-type roller bearing during testing, the test is closer to the actual working condition, preventing the bolt-type roller bearing from sliding left and right due to the operation of the driving wheel during the fatigue life test, and the axial load generated is fixed by the fixture structure. The torque locking can reduce part of the bearing load.

[0009] To illustrate the specific structure of the clamping tooling, the clamping tooling adopted in the utility model includes: a clamping bolt, which has the first limiting plate, and the U-shaped structure at the end thereof is placed in the U-shaped groove on one side of the supporting tooling; a clamping nut, which has a second limiting plate, and the circular structure at the end thereof is placed in the U-shaped groove on the other side of the supporting tooling, and the screw of the clamping bolt passes through the threaded hole in the middle of the clamping nut; the first limiting plate and the second limiting plate are both against the inner side of the clamping tooling, and the spacing between the first limiting plate and the second limiting plate is adjusted by rotating the clamping nut, so as to fix the first limiting plate and the second limiting plate on the supporting tooling;

[0010] In the present scheme, the clamping tooling includes a clamping bolt with a first limiting plate and a clamping nut with a second limiting plate; the end of the clamping bolt has a U-shaped structure placed in the U-shaped groove of the supporting tooling, thereby limiting the rotation of the clamping bolt; the end of the clamping nut has a circular structure placed in the U-shaped groove of the supporting tooling, thereby realizing the rotation of the clamping nut. By rotating the clamping nut, the spacing between the first and second limiting plates is adjusted, and the first and second limiting plates are abutted against the supporting tooling, thereby limiting the spacing adjustment between the first and second limiting plates, and then limiting the clamping tooling at the supporting tooling. Since the supporting tooling is set to a U-shaped groove, the clamping tooling as a whole can be laterally inserted and matched with the supporting tooling.

[0011] In order to illustrate how the bolt-type roller bearing is installed on the first and second limiting plates, the utility model adopts the bolt of the bolt-type roller bearing to pass through the first through hole on the first limiting plate and be connected through a locking nut; the temperature sensor passes through the second through hole on the second limiting plate, and the detection end is located in the hole body at the end of the bolt;

[0012] In this solution, the bolt of the bolt-type roller bearing passes through the first through hole on the first limit plate, and the bolt-type roller bearing is locked on the first limit plate by a locking nut. The second limit plate is abutted against the other side of the bolt-type roller bearing. The temperature sensor is placed in the hole at the end of the bolt to detect the temperature inside the bolt-type roller bearing during fatigue testing.

[0013] How to limit the bolt-type roller bearing to rotate only between the first and second limiting plates, the utility model adopts the first limiting plate to abut against the inner ring end ring of the bolt-type roller bearing, and the second limiting plate to abut against the bolt end face of the bolt-type roller bearing;

[0014] In this solution, the inner ring end ring of the bolt-type roller bearing abuts against the end face of the first limit plate, and the second limit plate abuts against the bolt end face of the bolt-type roller bearing, which is equivalent to the first and second limit plates abutting against the inner ring of the traditional bearing, and the outer ring of the bearing can still rotate, thus realizing the function of the bolt-type roller bearing only rotating between the first and second limit plates.

[0015] In order to monitor the vibration of the bolt-type roller bearing, the utility model adopts a vibration sensor, which passes through the supporting tooling and abuts against the U-shaped structure or the circular structure;

[0016] When the bolt-type roller bearing vibrates, the vibration force is transmitted to the clamping fixture. The vibration sensor is fixed on the supporting fixture, and the detection end is pressed against the U-shaped structure or circular structure of the clamping fixture, so that the vibration of the bolt-type roller bearing can be monitored.

[0017] In order to limit the rotation of the clamping bolt and facilitate the adjustment of the clamping nut, the utility model adopts adjustment holes at both ends of the clamping bolt;

[0018] The adjusting hole is set as the processing hole of the bolt shaft to facilitate the processing of the bolt shaft.

[0019] The beneficial effects of the utility model are as follows: the utility model is a fatigue life test fixture for a bolt-type roller bearing, wherein a driving wheel is arranged in the middle, and supporting fixtures are respectively arranged on both sides. A clamping fixture is arranged on each supporting fixture, and a first limiting plate and a second limiting plate on the clamping fixture are used to limit the axial movement of the bolt-type roller bearing, and do not limit the rotation of the bolt-type roller bearing; the driving wheel abuts against the outer ring of the bolt-type roller bearing, and the driving wheel rotates to make the bolt-type roller bearing rotate, and a fatigue life test is performed; the axial movement of the bolt-type roller bearing during detection is limited by setting the first limiting plate and the second limiting plate, so that the test is closer to the actual working condition, and the bolt-type roller bearing is prevented from sliding left and right due to the influence of the driving wheel operation on the bearing during the fatigue life test, and the generated axial load is locked by the fixing torque of the fixture structure to reduce part of the bearing load. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is the matching diagram of the supporting fixture, clamping fixture and bolt-type roller bearing;

[0023] Figure 3 It is a schematic diagram of the structure of the supporting tooling;

[0024] Figure 4 yes Figure 2 Exploded diagram of

[0025] Figure 5 yes Figure 2 Exploded image from another perspective;

[0026] In the figure: 1-support tooling, 11-2-clamping tooling, 21-clamping bolt, 22-clamping nut, 23-U-shaped structure, 24-circular structure, 25-screw, 26-adjusting hole, 3-first limiting plate, 31-first through hole, 4-second limiting plate, 41-second through hole, 5-driving wheel, 6-bolt type roller bearing, 61-bolt, 62-locking nut, 63-hole body, 7-temperature sensor, 8-vibration sensor. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1-2 As shown, the utility model is a bolt-type roller bearing fatigue life test fixture, comprising: two supporting fixtures 1, which are arranged opposite to each other; a clamping fixture 2, which is fixedly arranged at each of the supporting fixtures 1, and has a first limiting plate 3 and a second limiting plate 4 arranged opposite to each other; a driving wheel 5, which is arranged between the two supporting fixtures 1; when the bolt-type roller bearing 6 rotates and is axially limited between the first limiting plate 3 and the second limiting plate 4, the driving wheel 5 and the outer ring of the bolt-type roller bearing 6 are rotated against each other, and the bolt-type roller bearing 6 is driven to rotate for fatigue testing;

[0029] In this solution, the driving wheel is arranged in the middle, with supporting fixtures on both sides, and a clamping fixture is arranged on each supporting fixture. The first limit plate and the second limit plate on the clamping fixture are used to limit the axial movement of the bolt-type roller bearing, but do not limit the rotation of the bolt-type roller bearing; the driving wheel is abutted against the outer ring of the bolt-type roller bearing, and the driving wheel rotates to make the bolt-type roller bearing rotate, and a fatigue life test is performed; by setting the first limit plate and the second limit plate to limit the axial movement of the bolt-type roller bearing during testing, the test is closer to the actual working condition, preventing the bolt-type roller bearing from sliding left and right due to the operation of the driving wheel during the fatigue life test, and the axial load generated is fixed by the fixture structure. The torque locking can reduce part of the bearing load.

[0030] like Figure 3-5As shown, in order to illustrate the specific structure of the clamping fixture, the clamping fixture 2 adopted by the present invention includes: a clamping bolt 21, which has the first limiting plate 3, and the U-shaped structure 23 at the end thereof is placed in the U-shaped groove 11 on one side of the supporting fixture 1; a clamping nut 22, which has a second limiting plate 4, and the circular structure 24 at the end thereof is placed in the U-shaped groove 11 on the other side of the supporting fixture 1, and the screw 25 of the clamping bolt 21 passes through the threaded hole in the middle of the clamping nut 22; the first limiting plate 3 and the second limiting plate 4 are both against the inner side of the clamping fixture 1, and the spacing between the first limiting plate 3 and the second limiting plate 4 is adjusted by rotating the clamping nut 22, so as to fix the first limiting plate 3 and the second limiting plate 4 on the supporting fixture 1;

[0031] In the present scheme, the clamping tooling includes a clamping bolt with a first limiting plate and a clamping nut with a second limiting plate; the end of the clamping bolt has a U-shaped structure placed in the U-shaped groove of the supporting tooling, thereby limiting the rotation of the clamping bolt; the end of the clamping nut has a circular structure placed in the U-shaped groove of the supporting tooling, thereby realizing the rotation of the clamping nut. By rotating the clamping nut, the spacing between the first and second limiting plates is adjusted, and the first and second limiting plates are abutted against the supporting tooling, thereby limiting the spacing adjustment between the first and second limiting plates, and then limiting the clamping tooling at the supporting tooling. Since the supporting tooling is set to a U-shaped groove, the clamping tooling as a whole can be laterally inserted and matched with the supporting tooling.

[0032] like Figure 4-5 As shown, in order to illustrate how the bolt-type roller bearing is installed on the first and second limiting plates, the utility model adopts the bolt 61 of the bolt-type roller bearing 6 to pass through the first through hole 31 on the first limiting plate 3 and is connected through a locking nut 62; the temperature sensor 7 passes through the second through hole 41 on the second limiting plate 4, and the detection end is located in the hole 63 at the end of the bolt 61;

[0033] In this solution, the bolt of the bolt-type roller bearing passes through the first through hole on the first limit plate, and the bolt-type roller bearing is locked on the first limit plate by a locking nut. The second limit plate is abutted against the other side of the bolt-type roller bearing. The temperature sensor is placed in the hole at the end of the bolt to monitor the temperature inside the bolt-type roller bearing in real time during fatigue testing. For example, if the detected temperature is too high and exceeds 80 degrees, the tooling will shut down.

[0034] like Figure 4-5 As shown, how to limit the bolt-type roller bearing to rotate only between the first and second limiting plates, the utility model adopts the first limiting plate 3 to abut against the inner ring end ring 64 of the bolt-type roller bearing 6, and the second limiting plate 4 to abut against the end face of the bolt 61 of the bolt-type roller bearing 6;

[0035] In this solution, the inner ring end ring of the bolt-type roller bearing abuts against the end face of the first limit plate, and the second limit plate abuts against the bolt end face of the bolt-type roller bearing, which is equivalent to the first and second limit plates abutting against the inner ring of the traditional bearing, and the outer ring of the bearing can still rotate, thus realizing the function of the bolt-type roller bearing only rotating between the first and second limit plates.

[0036] like Figure 3-4 As shown, in order to monitor the vibration of the bolt-type roller bearing, the utility model adopts a vibration sensor 8, which passes through the supporting tooling 1 and abuts against the U-shaped structure 23 or the circular structure 24;

[0037] When the bolt-type roller bearing vibrates, the vibration force will be transmitted to the clamping fixture. The vibration sensor is fixed on the supporting fixture, and the detection end is offset against the U-shaped structure or circular structure of the clamping fixture. In this way, the vibration of the bolt-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 fixture.

[0038] like Figure 4-5 As shown, in order to limit the rotation of the clamping bolt and facilitate the adjustment of the clamping nut, the utility model adopts adjustment holes 26 at both ends of the clamping bolt 21;

[0039] The adjusting hole is set as the processing hole of the bolt shaft to facilitate the processing of the bolt shaft.

[0040] 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 bolt-type roller bearing fatigue life test tool, characterized in that: include: Two supporting fixtures, which are arranged opposite to each other; A clamping fixture, which is fixedly arranged at each of the supporting fixtures, and has a first limiting plate and a second limiting plate arranged opposite to each other; A driving wheel, which is arranged between the two supporting toolings; When the bolt type roller bearing rotates and is axially limited between the first limiting plate and the second limiting plate, the driving wheel rotates against the outer ring of the bolt type roller bearing, driving the bolt type roller bearing to rotate for fatigue testing.

2. A bolt-type roller bearing fatigue life test tool according to claim 1, characterized in that: The clamping tool comprises: A clamping bolt having the first limiting plate, and a U-shaped structure at the end thereof being placed in a U-shaped groove on one side of the supporting tooling; A clamping nut having a second limiting plate, a circular structure at the end of which is placed in the U-shaped groove on the other side of the supporting fixture, and a screw rod of the clamping bolt passes through a threaded hole in the middle of the clamping nut; The first limiting plate and the second limiting plate are both against the inner side of the clamping fixture, and the spacing between the first limiting plate and the second limiting plate is adjusted by rotating the clamping nut to fix the first limiting plate and the second limiting plate on the supporting fixture.

3. A bolt-type roller bearing fatigue life test tool as claimed in claim 2, characterized in that: The bolt of the bolt-type roller bearing passes through the first through hole on the first limiting plate and is connected by a locking nut; The temperature sensor passes through the second through hole on the second limiting plate, and the detection end is located in the hole body at the end of the bolt.

4. A bolt-type roller bearing fatigue life test tool as claimed in claim 3, characterized in that: It also includes a vibration sensor, which passes through the supporting tooling and abuts against the U-shaped structure or the circular structure.

5. The bolt-type roller bearing fatigue life test tool according to claim 2, characterized in that: The first limiting plate abuts against the inner ring end ring of the bolt type roller bearing, and the second limiting plate abuts against the bolt end face of the bolt type roller bearing.

6. A bolt-type roller bearing fatigue life test tool as claimed in claim 2, characterized in that: Adjustment holes are arranged at both ends of the clamping bolt.

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