CN217237549U - Tapered roller bearing and angular contact ball bearing life test machine - Google Patents
Tapered roller bearing and angular contact ball bearing life test machine Download PDFInfo
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- CN217237549U CN217237549U CN202220181725.5U CN202220181725U CN217237549U CN 217237549 U CN217237549 U CN 217237549U CN 202220181725 U CN202220181725 U CN 202220181725U CN 217237549 U CN217237549 U CN 217237549U
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Abstract
The application relates to the technical field of bearing testing machines, in particular to a life testing machine for a tapered roller bearing and an angular contact ball bearing, which comprises a frame, the frame is provided with a seat body, one end of the seat body is provided with an axial loading system, a main shaft is arranged in the seat body, one end of the main shaft, which is far away from the axial loading system, extends out of the seat body, one end of the main shaft, which extends out of the seat body, is used for being connected with a driving motor, the main shaft is provided with two test bearings which are arranged oppositely, a bearing seat sleeve for fixing the outer ring of the test bearing is arranged in the seat body in a sliding manner, the bearing seat sleeve close to one side of the axial loading system is abutted against the axial loading system, and the seat body is provided with a fixing part for fixing the bearing seat sleeve far away from one side of the axial loading system. This application has the effect of being convenient for install.
Description
Technical Field
The application relates to the technical field of bearing testing machines, in particular to a life testing machine for a tapered roller bearing and an angular contact ball bearing.
Background
The bearing is a key basic part in equipment manufacturing, and directly determines the performance, reliability and service life of the equipment, so that the corresponding simulation working condition of the bearing must be verified on a testing machine in the design, development and production manufacturing processes, reliable test data is provided for research, design, manufacture and use, and a basis is provided for the design, manufacture and use of the bearing.
In the related technology, a bearing testing machine adopts a plurality of loading heads to uniformly load the outer ring of a test bearing in the circumferential direction, and when the test bearing is installed, the positions of the loading heads and the test bearing need to be adjusted, so that the plurality of loading heads uniformly load the outer ring of the test bearing in the circumferential direction to test the performance of the test bearing.
In view of the above related technologies, the inventor thinks that when the bearing testing machine is used for mounting a test bearing, the positions of a plurality of loading heads and the test bearing need to be adjusted, which makes mounting difficult.
SUMMERY OF THE UTILITY MODEL
In order to facilitate the installation, the application provides a tapered roller bearing and angular contact ball bearing life test machine.
The application provides a tapered roller bearing and angular contact ball bearing life test machine adopts following technical scheme:
the utility model provides a tapered roller bearing and angular contact ball bearing life-span testing machine, includes the frame, be provided with the pedestal in the frame, the one end of pedestal is provided with axial loading system, be provided with the main shaft in the pedestal, the one end that axial loading system was kept away from to the main shaft extends outside the pedestal, the main shaft extends to the one end outside the pedestal and is used for being connected with driving motor, be provided with two experimental bearings on the main shaft, two experimental bearing sets up relatively, it is provided with the bearing housing that is used for fixed experimental bearing outer lane to slide in the pedestal, is close to the bearing housing and the axial loading system butt of axial loading system one side, be provided with the mounting that is used for the fixed bearing housing of keeping away from axial loading system one side on the pedestal.
By adopting the technical scheme, the test bearing sleeve is arranged on the main shaft, the bearing seat sleeve is arranged on the test bearing, the bearing seat sleeve slides into the seat body, the bearing seat sleeve is fixed through the axial loading system and the fixing part, the load is applied to the test bearing through the axial loading system, and the main shaft is driven to rotate through the driving motor, so that the test on the test bearing is realized. The installation of the test bearing is convenient, the arrangement of a radial load application system and a support bearing is reduced, the investment cost is saved, and the resource utilization rate is improved; the floor area of the testing machine is reduced; after no radial loading system exists, the length of the main shaft is shortened, the main shaft only bears axial load, the influence caused by bending deformation of the main shaft is reduced, when bearings of different models need to be tested, the number of parts needing to be replaced from new design is small, and the dismounting and the mounting are convenient.
Optionally, the axial loading system includes a hydraulic cylinder, a loading member and a pressure sensor, the hydraulic cylinder is disposed on the base, the loading member is disposed in the base and is used for transmitting the axial load to the test bearing, and the pressure sensor is located between the loading member and the hydraulic cylinder.
By adopting the technical scheme, the hydraulic cylinder stretches out the piston rod to apply pressure to the pressure sensor, the pressure sensor transmits the pressure to the loading part, the loading part transmits the pressure to the test bearing, and the axial pressure of the test bearing is applied.
Optionally, the loading element includes a loading cover disposed in the seat, the loading cover abuts against the bearing seat sleeve, a groove is formed in the loading cover, the groove separates the loading cover from the spindle, and the pressure sensor is connected to the loading cover.
By adopting the technical scheme, the load is applied to the loading cover through the axial loading system, and the loading cover transmits the load to the test bearing, so that the load test of the test bearing is facilitated.
Optionally, the fixing element includes an end cover disposed on the base, the end cover abuts against the bearing sleeve on the side far away from the axial loading system, and the main shaft penetrates through the end cover and extends out of the end cover.
Through adopting above-mentioned technical scheme, the inner circle cover of experimental bearing is established on the main shaft, the outer lane of experimental bearing passes through the bearing sleeve and fixes on the pedestal, the butt through the end cover to the bearing sleeve realizes the fixed to the bearing sleeve, the simple structure of fixed experimental bearing, spare part is less, when changing the bearing of not unidimensional model with the platform testing machine and testing, the part of redesign and processing is few, with low costs and processing cycle is short, tear open simultaneously, the dress testing machine process is simple and convenient, and reduced the complicated bearing part that causes of assembling process and produced the risk of colliding with the wound.
Optionally, one end of the end cover close to the main shaft is provided with a first sealing ring, and the end of the loading cover is provided with a second sealing ring.
Through adopting above-mentioned technical scheme, through the sealed of first sealing washer and second sealing washer to reduce the outflow of lubricating oil.
Optionally, an oil inlet is formed in the base body, a lubricating oil channel is formed in the bearing sleeve, one end of the lubricating oil channel is communicated with a cavity on one side, close to the end portion of the main shaft, of the test bearing, the other end of the lubricating oil channel is communicated with the oil inlet, an oil outlet is formed in one side, far away from the oil inlet, of the base body, and the oil outlet is communicated with the cavity between the two test bearings.
Through adopting above-mentioned technical scheme, lubricating oil gets into the lubrication oil duct from the oil inlet, gets into experimental bearing from the lubrication oil duct, passes experimental bearing roller and gets into the other end of experimental bearing, flows from the oil-out again to in the lubrication to experimental bearing.
Optionally, the bearing sleeve is provided with an oil inlet, one end of the oil inlet is communicated with the lubricating oil channel, the other end of the oil inlet is close to the test bearing roller, and the lubricating oil flows into the test bearing roller from the oil inlet.
Through adopting above-mentioned technical scheme, lubricating oil flows in on the roller of test bearing through the inlet port, and further the lubrication to test bearing is strengthened to be favorable to being the lubrication to test bearing at test bearing start-up.
Optionally, the hydraulic cylinder and the end cover are detachably connected to the base body.
Through adopting above-mentioned technical scheme, the end cover all can be dismantled with pneumatic cylinder and pedestal and be connected, can dismantle and change test bearing from both sides to be favorable to pressure sensor's detection and maintenance.
In summary, the present application includes at least one of the following beneficial technical effects:
the test bearing sleeve is arranged on the main shaft, the bearing seat sleeve is arranged on the test bearing in a sleeved mode, the bearing seat sleeve slides into the seat body, the bearing seat sleeve is fixed through the fixing piece, the axial loading system applies load to the test bearing, and the main shaft is driven to rotate through the driving motor, so that the test of the test bearing is achieved. The installation of the test bearing is convenient, the arrangement of a radial load application system and a support bearing is reduced, the investment cost is saved, and the resource utilization rate is improved; the floor area of the testing machine is reduced; after the radial loading system is not tested, the length of the main shaft is shortened, and the main shaft is only subjected to axial load, so that the influence caused by bending deformation of the main shaft is reduced, and when bearings of different types need to be tested, fewer parts need to be replaced from new design, and the assembly and disassembly are convenient;
lubricating oil enters the lubricating oil channel from the oil inlet, enters the test bearing from the lubricating oil channel, passes through the roller of the test bearing, enters the other end of the test bearing, and then flows out of the oil outlet, so that the test bearing is lubricated.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.
Fig. 2 is a sectional view of the entire structure of embodiment 1 of the present application.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic view of the overall structure of embodiment 2 of the present application.
Description of reference numerals: 1. a frame; 2. a base body; 3. a main shaft; 4. testing the bearing; 5. a bearing housing; 6. a hydraulic cylinder; 7. a pressure sensor; 8. a loading lid; 9. a groove; 10. an end cap; 11. a first seal ring; 12. a second seal ring; 13. an oil inlet; 14. a lubricating oil passage; 15. an oil outlet; 16. an oil inlet hole; 17. connecting grooves; 18. a transitional connecting sleeve; 19. a baffle plate; 20. a third seal ring; 21. a connecting frame; 22. a butt joint plate; 23. a protective cover; 24. and a base is connected.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a tapered roller bearing and angular contact ball bearing life testing machine.
Example 1:
referring to fig. 1 and 2, the tapered roller bearing and angular contact ball bearing service life testing machine comprises a frame 1, a seat body 2 is fixed on the frame 1, the seat body 2 is connected with the frame 1 through a bolt, the seat body 2 is a cylindrical seat body, one end of the seat body 2 is provided with an axial loading system, a main shaft 3 is rotatably connected in the seat body 2, the rotating direction of the main shaft 3 is along the length direction of the seat body 2, one end of the main shaft 3 far away from the axial loading system extends out of the seat body 2, one end of the main shaft 3 extending out of the seat body 2 is connected with a driving motor through a coupler, two test bearings 4 are connected on the main shaft 3, the two test bearings 4 are arranged oppositely, bearing inner rings of the two test bearings 4 are abutted against a shaft shoulder of the main shaft 3, a bearing sleeve 5 for fixing an outer ring of the test bearing 4 is connected in the seat body 2 in a sliding manner, a connecting groove 17 is formed in the bearing sleeve 5, the outer ring of the test bearing 4 is abutted against a groove wall of the connecting groove 17, the bearing sleeve 5 close to one side of the axial loading system is abutted against the axial loading system, and the base body 2 is provided with a fixing piece for fixing the bearing sleeve 5 far away from one side of the axial loading system.
When the service life of the tapered roller bearing and the angular contact ball bearing is tested, the equivalent dynamic load P value required by the test loading is generally determined, the radial and axial load distribution is carried out according to the ISO281 formula P = X Fr + Y Fa, (Fr is the radial load, Fa is the axial load, X, Y is a coefficient), X of the tapered roller bearing and the angular contact ball bearing is a fixed value, X =0.4, and Y =0.4 cot alpha (alpha = 0-45), therefore, when Fr is 0, the same P value can be achieved by increasing the value of Fa, the same test effect can be achieved, and when the test bearing 4 is tested only through an axial loading system, the same effect as when the axial load and the radial load are simultaneously applied can be achieved. A test machine only is equipped with axial loading system, has reduced the testing machine and has placed area, and a test machine can be equipped with a plurality of pedestals 2 simultaneously to in the experiment to a plurality of experimental bearings 4, improve experimental resource utilization, no longer influenced by the various factors that produce under the radial load when experimental start, experimental effect is better.
Referring to fig. 2 and 3, the axial loading system includes a hydraulic cylinder 6, a loading member and a pressure sensor 7, a transition connecting sleeve 18 is fixed on the base body 2, the hydraulic cylinder 6 is detachably connected to the transition connecting sleeve 18, in this embodiment, the transition connecting sleeve 18 is fixed on the base body 2 through a bolt, the hydraulic cylinder 6 is connected to the transition connecting sleeve 18 through a bolt, and in other embodiments, the bolt may be replaced by a screw rod and a nut screwed on the screw rod; the loading part is arranged in the base body 2 and used for transmitting an axial load to the test bearing 4, the pressure sensor 7 is positioned between the loading part and the hydraulic cylinder 6, the loading part comprises a loading cover 8 which is connected in the base body 2 in a sliding mode, the loading cover 8 is abutted to the bearing sleeve 5, a groove 9 is formed in the loading cover 8, the loading cover 8 is separated from the main shaft 3 through the groove 9, and the pressure sensor 7 is connected to the loading cover 8 through a bolt; the hydraulic cylinder 6 slides out of the stress ejector rod of the piston rod and the pressure sensor 7 to be abutted, axial pressure is transmitted to the pressure sensor 7, the pressure sensor 7 transmits pressure to the loading cover 8, the loading cover 8 transmits the pressure to the bearing sleeve 5, and the bearing sleeve 5 transmits the pressure to the test bearing 4, so that required equivalent dynamic load is applied to the test bearing 4.
Referring to fig. 2, the fixing member includes an end cover 10 fixed on the seat body 2, the end cover 10 abuts against the bearing sleeve 5 far from one side of the axial loading system, the main shaft 3 penetrates through the end cover 10 and extends out of the end cover 10, a baffle plate 19 is fixed on the end cover 10, the baffle plate 19 is bolted to the end cover 10, the main shaft 3 penetrates through the baffle plate 19 and extends out of the baffle plate 19, the end cover 10 is detachably connected to the seat body 2, in this embodiment, the end cover 10 is fixed on the seat body 2 by bolts, and in other embodiments, the bolts may be replaced by nuts connected to the bolts by screws and threads.
Referring to fig. 2 and 3, two oil inlets 13 are formed in the base body 2, a lubricating oil passage 14 is formed in the bearing sleeve 5, one end of the lubricating oil passage 14 is communicated with a cavity on one side, close to the end portion of the main shaft 3, of the test bearing 4, the other end of the lubricating oil passage is communicated with the adjacent oil inlet 13, an oil outlet 15 is formed in one side, far away from the oil inlet 13, of the base body 2, the oil outlet 15 is communicated with the cavity between the two test bearings 4, lubricating oil enters the lubricating oil passage 14 from the oil inlet 13, enters the test bearing 4 from the lubricating oil passage 14, penetrates through a gap between rollers of the test bearing 4 and flows into the other side of the test bearing 4, and then flows out of the oil outlet 15, so that the test bearing 4 is lubricated. The bearing sleeve 5 is provided with an oil inlet hole 16, one end of the oil inlet hole 16 is communicated with the lubricating oil channel 14, the other end of the oil inlet hole is close to the roller of the test bearing 4, the lubricating oil flows into the roller of the test bearing 4 from the oil inlet hole 16, the lubricating oil flows into the roller of the test bearing 4 through the oil inlet hole 16, the lubrication of the test bearing 4 is further enhanced, the lubrication of the test bearing 4 is facilitated when the test bearing 4 is started, the test rotating speed is only related to the limit rotating speed of the test bearing 4, the pollutant source of the lubricating oil is mainly the test bearing 4, and the pollutant source of the lubricating oil is less.
Referring to fig. 2 and 3, a first seal ring 11 is fixed at one end of the end cover 10 close to the main shaft 3, the first seal ring 11 is a lip seal ring, a second seal ring 12 is fixed at the end of the loading cover 8, the second seal ring 12 abuts against the seat body 2, third seal rings 20 are fixed at both ends of the seat body 2, the third seal rings 20 abut against the end cover 10 or the transitional connection sleeve 18, and the second seal ring 12 and the third seal rings 20 are both rubber seal rings, so as to seal the inner cavity of the seat body 2.
The implementation principle of the embodiment 1 of the application is as follows: assembling the transitional connecting sleeve 18 provided with the hydraulic cylinder 6 on the seat body 2; a loading cover 8 provided with a pressure sensor 7 and a bearing seat sleeve 5 provided with an outer ring of a test bearing 4 are sequentially arranged in the seat body 2 from the other side of the seat body 2; assembling an inner assembly of a test bearing 4 on the main shaft 3, hoisting the inner assembly into the base body 2, and fitting the inner assembly with an outer ring of the assembled bearing sleeve 5; sequentially assembling another bearing sleeve 5 provided with an outer ring of the test bearing 4 and an end cover 10 provided with a first sealing ring 11 into the seat body 2; the baffle plate 19 is fixed on the end cover 10, the seat body 2 which is assembled is integrally assembled on the testing machine frame 1, and the main shaft 3 is connected with the driving motor through a coupler. Before starting, firstly, an axial load of 5-10kN is applied through the hydraulic cylinder 6 for pre-tightening, then, the motor is started to drive the main shaft 3 to rotate, and the axial load is slowly loaded to a specified value within three hours.
Example 2:
referring to fig. 4, the difference between this embodiment and embodiment 1 is that the seat bodies 2 are square, the seat bodies 2 are two, the test bearings 4 are respectively located in the two seat bodies 2, the connecting frame 21 is arranged outside the seat bodies 2, the two seat bodies 2 are slidably connected in the connecting frame 21, the hydraulic cylinder 6 is fixed outside the connecting frame 21, the piston rod of the hydraulic cylinder 6 is slidably arranged on the connecting frame 21, the connecting frame 21 is fixed with two abutting plates 22, and the abutting plates 22 abut against the seat bodies 2; the loading cover 8 is slidably connected in the connecting frame 21, the loading cover 8 is abutted with the abutting plate 22, the loading cover 8 is abutted with the seat body 2 on one side close to the hydraulic cylinder 6, and a protective cover 23 for protecting the pressure sensor 7 is fixed on the loading cover 8; end cover 10 sliding connection is in the connecting frame 21, and end cover 10 and butt plate 22 butt, end cover 10 and the 2 butts of pedestal of keeping away from pneumatic cylinder 6 one side, and the one end that pneumatic cylinder 6 was kept away from to main shaft 3 extends to the connecting frame 21 outside and is connected with driving motor, and the bottom of connecting frame 21 is fixed with connection base 24.
The implementation principle of embodiment 2 of the present application is as follows: fixing the connecting frame 21 on the connecting base 24, assembling the outer ring of the test bearing 4 on the base body 2, assembling the inner component of the test bearing 4 on the main shaft 3, and fitting with the outer ring of the previously assembled bearing sleeve 5; assembling the assembled seat body 2 and the spindle 3 into the connecting frame 21, fixing the abutting plate 22 on the connecting frame 21, abutting the abutting plate 22 and the seat body 2, assembling the pressure sensor 7 on the loading cover 8, abutting the loading cover 8 and the abutting plate 22, fixing the hydraulic cylinder 6 on the connecting frame 21, and finally assembling the protective cover 23 into the connecting frame 21.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a tapered roller bearing and angular contact ball bearing life test machine which characterized in that: comprises a frame (1), a seat body (2) is arranged on the frame (1), one end of the seat body (2) is provided with an axial loading system, a main shaft (3) is arranged in the seat body (2), one end of the main shaft (3) far away from the axial loading system extends out of the seat body (2), one end of the main shaft (3) extending out of the seat body (2) is used for being connected with a driving motor, the main shaft (3) is provided with two test bearings (4), the two test bearings (4) are arranged oppositely, a bearing seat sleeve (5) used for fixing the outer ring of the test bearing (4) is arranged in the seat body (2) in a sliding manner, the bearing seat sleeve (5) close to one side of the axial loading system is abutted against the axial loading system, and the base body (2) is provided with a fixing part for fixing the bearing sleeve (5) far away from one side of the axial loading system.
2. The tapered roller bearing and angular contact ball bearing life tester as claimed in claim 1, wherein: the axial loading system comprises a hydraulic cylinder (6), a loading part and a pressure sensor (7), wherein the hydraulic cylinder (6) is arranged on the base body (2), the loading part is arranged in the base body (2) and used for transmitting an axial load to the test bearing (4), and the pressure sensor (7) is positioned between the loading part and the hydraulic cylinder (6).
3. The tapered roller bearing and angular contact ball bearing life tester as claimed in claim 2, wherein: the loading piece comprises a loading cover (8) arranged in the base body (2), the loading cover (8) is abutted to the bearing seat sleeve (5), a groove (9) is formed in the loading cover (8), the groove (9) is used for separating the loading cover (8) from the main shaft (3), and the pressure sensor (7) is connected with the loading cover (8).
4. The tapered roller bearing and angular contact ball bearing life tester as claimed in claim 3, wherein: the fixing piece comprises an end cover (10) arranged on the base body (2), the end cover (10) is abutted to a bearing sleeve (5) far away from one side of the axial loading system, and the main shaft (3) penetrates through the end cover (10) and extends out of the end cover (10).
5. The tapered roller bearing and angular contact ball bearing life tester as claimed in claim 4, wherein: one end, close to the main shaft (3), of the end cover (10) is provided with a first sealing ring (11), and the end part of the loading cover (8) is provided with a second sealing ring (12).
6. The tapered roller bearing and angular contact ball bearing life tester as claimed in claim 4, wherein: the oil inlet (13) has been seted up on pedestal (2), lubricating oil duct (14) have been seted up on bearing sleeve (5), the one end of lubricating oil duct (14) and test bearing (4) are close to the cavity intercommunication of main shaft (3) tip one side, and the other end and oil inlet (13) intercommunication, oil-out (15) have been seted up to one side of keeping away from oil inlet (13) on pedestal (2), cavity intercommunication between oil-out (15) and two test bearing (4).
7. The tapered roller bearing and angular contact ball bearing life tester as claimed in claim 6, wherein: an oil inlet hole (16) is formed in the bearing sleeve (5), one end of the oil inlet hole (16) is communicated with the lubricating oil channel (14), the other end of the oil inlet hole is close to the roller of the test bearing (4), and lubricating oil flows into the roller of the test bearing (4) from the oil inlet hole (16).
8. The tapered roller bearing and angular contact ball bearing life tester as claimed in claim 4, wherein: the hydraulic cylinder (6) and the end cover (10) can be detachably connected to the base body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220181725.5U CN217237549U (en) | 2022-01-22 | 2022-01-22 | Tapered roller bearing and angular contact ball bearing life test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220181725.5U CN217237549U (en) | 2022-01-22 | 2022-01-22 | Tapered roller bearing and angular contact ball bearing life test machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217237549U true CN217237549U (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220181725.5U Active CN217237549U (en) | 2022-01-22 | 2022-01-22 | Tapered roller bearing and angular contact ball bearing life test machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217237549U (en) |
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2022
- 2022-01-22 CN CN202220181725.5U patent/CN217237549U/en active Active
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