CN110895199B - Bearing light-load slip test device - Google Patents
Bearing light-load slip test device Download PDFInfo
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- CN110895199B CN110895199B CN201911145701.3A CN201911145701A CN110895199B CN 110895199 B CN110895199 B CN 110895199B CN 201911145701 A CN201911145701 A CN 201911145701A CN 110895199 B CN110895199 B CN 110895199B
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- 238000012360 testing method Methods 0.000 title claims abstract description 157
- 230000001050 lubricating effect Effects 0.000 claims abstract description 12
- 125000006850 spacer group Chemical group 0.000 claims description 21
- 210000004907 gland Anatomy 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 229920001342 Bakelite® Polymers 0.000 claims description 4
- 239000004637 bakelite Substances 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000011161 development Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 51
- 238000000034 method Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 7
- 239000010687 lubricating oil Substances 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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Abstract
A bearing light load slip test device, comprising: the test bed comprises a test bed body, an axial loading system, a radial loading system, a lubricating system and a driving system; the test bed main body comprises a support frame, left and right support wheels, a test shaft, an upper box body and a right end cover, wherein the left and right support wheels are respectively arranged at the left and right sides of the support frame, the test shaft is arranged in a central hole of the right support wheel, the upper box body is arranged in upper rectangular ring grooves of the left and right support wheels, and the right end cover is arranged at the right end of the test shaft; the axial loading system is arranged on the left side of the left supporting wheel, the radial loading system is arranged in the central hole of the upper box body, the lubricating system is arranged below the axial loading system, and the driving system is arranged at the right end of the test shaft. The device has scientific structural design and convenient operation, can accurately master various data of the aircraft engine bearing under light load through loading and oil temperature control tests, judges the service performance and service life of the aircraft engine bearing, and provides a basis for the selection and development of new models of the aircraft engine bearing.
Description
Technical Field
The invention belongs to the technical field of aircraft engine bearing tests, and particularly relates to a bearing light-load slip test device which is mainly used for performing a performance test on an aircraft engine bearing and checking the reliability of the bearing under main working parameters and specific working conditions of the engine.
Background
The bearing of the aircraft engine has higher reliability, enough rigidity, larger bearing capacity and longer service life because of the importance, the bearing needs to be subjected to various experiments before use, and in order to prevent the bearing of the aircraft engine from slipping in light load, the development designs a bearing light load slipping test device, namely, the installation mode of the bearing of the aircraft engine in the aircraft engine is simulated, whether the bearing of the aircraft engine can normally work in light load state is explored, the bearing is closer to the actual working condition of the aircraft engine, and performance and service life tests are carried out, so that the performance of the bearing of the engine is judged, test data are provided for the selection and development of new models of the bearing of the aircraft engine, and the bearing light load slipping test device is a new direction of future aircraft engine bearing test technology.
Disclosure of Invention
The invention aims to provide a bearing light-load slipping test device which simulates an aircraft engine, wherein a bearing to be tested is arranged on a test shaft system, a high-frequency electric spindle drags the test shaft system to rotate at a high speed through a coupling, an axial loading piston and a radial loading piston are controlled through a proportional pressure reducing valve to load, so that radial loading and axial loading and load change of the bearing are realized, the loading condition of the test bearing is monitored in real time through a pressure sensor, the oil supply temperature is controlled through a heating function of a high Wen Gongyou system, and the flow requirement of test lubricating oil is met through adjustment of a pressure valve.
The aim of the invention can be achieved by adopting the following technical scheme: a bearing light load slip test device, comprising: the test bed comprises a test bed body, an axial loading system, a radial loading system, a lubricating system and a driving system; the test bed main body comprises a support frame, a left support wheel, a right support wheel, a test shafting, an upper box body and a right end cover; the left support wheel and the right support wheel are respectively arranged at the left side and the right side of the support frame, rectangular ring grooves are respectively arranged on the outer circles of the left support wheel and the right support wheel, the rectangular ring grooves are just clamped at the upper part of the support frame, and the rectangular ring grooves are fixed on the support frame through bolts; the test shafting is arranged in the center hole of the right supporting wheel and comprises a hollow shaft, a test bearing, a test accompanying bearing, a rear gland, a loading sleeve end cover, a loading sleeve, an inner spacer I, an inner spacer II, a ring sleeve, a spacer and a front gland; the right side of the hollow shaft is sequentially provided with an inner spacer bush I, a ring bush, a spacer bush, a test accompanying bearing I and a front gland, the front gland is fixed on the right side end face of the hollow shaft through bolts, and the left side of the hollow shaft is sequentially provided with a test accompanying bearing II, an inner spacer bush II, a loading bush, a test bearing, a loading bush end cover and a rear gland; the loading sleeve is sleeved on the outer ring of the test bearing, the end cover of the loading sleeve is fixed on one side end face of the loading sleeve through a bolt, and the rear gland is fixed on the left side end face of the hollow shaft through a bolt; the upper box body is arranged in upper rectangular ring grooves of the left supporting wheel and the right supporting wheel, and is fixed on the left supporting wheel and the right supporting wheel through bolts; the right end cover is arranged at the right end of the hollow shaft and is fixed on the right end face of the right supporting wheel through bolts; the axial loading system is arranged at the left side of the left supporting wheel and is fixed on the left end face of the left supporting wheel through bolts; the radial loading system is arranged in the central hole of the upper box body and is fixed on the upper box body through bolts; the lubricating system is arranged below the axial loading system and is connected with a connecting port of the axial loading system through a pipeline; the driving system is arranged at the right end of the test shafting.
The support frame be U-shaped support structure, the upper end of U-shaped support is provided with the locating pin that is used for fixing a position left support wheel and right support wheel respectively.
The rectangular ring grooves of the left supporting wheel and the right supporting wheel are identical in shape and size, and the size of the rectangular ring grooves corresponds to the connecting part of the upper box body and the supporting frame.
The test bearing is in interference fit connection with the hollow shaft, the axial position of the test bearing on the hollow shaft corresponds to the center of the annular groove on the loading sleeve, and the test bearing is in transition fit connection with the loading sleeve.
The hollow shaft is a hollow stepped shaft, and a bakelite plug is arranged at the hollow part of the middle section of the hollow shaft and is in interference fit with the hollow shaft.
The right support wheel on be provided with the front nozzle, the front nozzle passes through the bolt fastening on the right-hand member excircle of right support wheel to link up to the logical inslot of right-hand member lid, the lower part of right support wheel is provided with the oil return hole that link up, wherein is provided with end cap I, end cap II in two oil return holes respectively.
The axial loading system comprises an axial loading sleeve, an axial oil cylinder sleeve, an axial oil cylinder piston, an oil nozzle under a ring and an axial oil cylinder cover, wherein the axial loading sleeve is arranged between the axial oil cylinder piston and the left end of a test shafting, the axial loading sleeve is of a U-shaped ring structure, the bottom of the U-shaped ring is provided with a through hole connected with the axial oil cylinder piston, the outer ring of the U-shaped ring is provided with a key connected with a left supporting wheel, and the axial loading sleeve is sleeved in a key groove of a central hole of the left supporting wheel through the key; the axial oil cylinder is fixed on the left end face of the left supporting wheel through bolts, an axial oil cylinder sleeve and an axial oil cylinder piston are respectively installed in the axial oil cylinder, an oil nozzle under the ring is installed at the right end of the axial oil cylinder piston, the right end of the oil nozzle under the ring extends into a left end hollow shaft hole of the test shafting, and a pressure sensor and a proportional pressure reducing valve are connected to the axial oil cylinder cover.
The radial loading system comprises a radial oil cylinder, a radial oil cylinder piston, a radial loading rod and a radial oil cylinder cover, wherein the radial loading rod is arranged at the center of the bottom surface of the radial oil cylinder piston, the lower end of the radial loading rod is arranged in an outer ring groove of a loading sleeve of a test shafting, the center line of the radial loading rod is coaxial with the center of a test bearing rolling body on the test shafting and the center of the ring groove of the loading sleeve, the radial oil cylinder is fixed on an upper box body through a bolt, and the radial oil cylinder cover is connected with a pressure sensor and a proportional pressure reducing valve.
The lubricating system comprises a high Wen Gongyou system and a pressure regulating valve.
The driving system comprises a shaft coupling, an electric spindle and a frequency converter, wherein the electric spindle is connected with a hollow shaft of the test shafting through the shaft coupling.
According to the invention, during the test, according to the installation mode of the aircraft engine bearing in the aircraft engine, each part of the test bed main body, the radial loading system, the axle box loading system, the lubricating system and the driving system are installed in place, the electric spindle of the driving system is started firstly, the hollow shaft is driven to rotate through the coupling, the rotating speed of the electric spindle is controlled by the frequency converter, after the rotating speed of the hollow shaft is stable, the loading and the load change of the radial cylinder piston and the axial cylinder piston are controlled through the proportional pressure reducing valve of the radial loading system and the axial loading system, the loading condition of the test bearing is monitored in real time through the pressure sensor, meanwhile, the lubricating system controls the oil supply temperature through the heating function of the high Wen Gongyou system, the flow of the test lubricating oil is regulated through the pressure regulating valve, so that the flow of the test lubricating oil reaches the requirement, each data is monitored and recorded in the test process, and the light-load slip test of the bearing is completed.
The beneficial effects of the invention are as follows: the device structural design is scientific, and the operation is convenient, through loading and oil temperature control test, can accurately master each item data of aircraft engine bearing when light load, judges its performance and life-span, provides the basis for aircraft engine bearing's selection and development new model.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic cross-sectional view of a test shafting according to the present invention;
FIG. 4 is a schematic cross-sectional view of the right support wheel of the present invention;
FIG. 5 is a schematic cross-sectional view of a left support wheel of the present invention;
FIG. 6 is a bearing temperature line graph of the test procedure of the present invention;
FIG. 7 is a plot of current data for the test procedure of the present invention;
FIG. 8 is a bearing vibration line graph of the test procedure of the present invention;
The marks in the figure: A. the test bench comprises a test bench main body, B, an axial loading system, C, a radial loading system, D, a lubricating system, E, a driving system, 1, a supporting frame, 2, a left supporting wheel, 3, a right supporting wheel, 4, an upper box body, 5, a test shafting, 6, a right end cover, 7, a hollow shaft, 8, an inner spacer I, 9, a ring sleeve, 10, a spacer, 11, a test bearing I, 12, a front gland, 13, a test bearing II, 14, an inner spacer II, 15, a test bearing, 16, a loading sleeve, 17, a loading sleeve end cover, 18, a rear gland, 19, a bakelite plug, 20, an axial loading sleeve, 21, an axial cylinder, 22, an axial cylinder sleeve, 23, an axial cylinder piston, 24, a ring lower oil nozzle, 25, an axial cylinder cover, 26, a radial cylinder, 27, a radial cylinder piston, 28, a radial loading rod, 29, a radial cylinder cover, 30, a joint, 31, a front nozzle, 32, I, 33, a plug II, 34, a key, 35 and a positioning pin.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
As shown in fig. 1, 2, 3, 4 and 5, a bearing light load slip test device includes: the test bed comprises a test bed main body A, an axial loading system B, a radial loading system C, a lubricating system D and a driving system E; the test bed main body A comprises a support frame 1, a left support wheel 2, a right support wheel 3, an upper box body 4, a test shafting 5 and a right end cover 6; the support frame 1 is of a U-shaped support structure, the upper end of the U-shaped support is provided with a left support wheel 2 and a right support wheel 3 respectively, the outer circles of the left support wheel 2 and the right support wheel 3 are provided with annular grooves respectively, the shapes and the sizes of the two annular grooves are consistent, the sizes of the annular grooves correspond to the connecting parts of the support frame 1, the annular grooves are just clamped at the left side and the right side of the upper part of the support frame 1, the upper end of the support frame 1 is provided with a positioning pin 35 respectively, the left support wheel 2 and the right support wheel 3 play a role in positioning, and the left support wheel 2 and the right support wheel 3 are fixed on the support frame 1 through bolts; the right supporting wheel 3 is provided with a front nozzle 31, the front nozzle 31 is fixed on the outer circle of the right end of the right supporting wheel 3 through bolts and penetrates into a through groove of the right end cover 6 to carry out oil injection lubrication on the accompanying bearing I11, the lower part of the right supporting wheel 3 is provided with a through oil return hole, and a plug I32 and a plug II 33 are respectively arranged in the two oil return holes; the test shafting 5 is arranged in a central hole of the right supporting wheel 3, the test shafting 5 comprises a hollow shaft 7, an inner spacer sleeve I8, a ring sleeve 9, a spacer sleeve 10, a test accompanying bearing I11, a front gland 12, a test accompanying bearing II 13, an inner spacer sleeve II 14, a test bearing 15, a loading sleeve 16, a loading sleeve end cover 17 and a rear gland 18, the hollow shaft 7 is a hollow stepped shaft, the right side of the hollow shaft 7 is sequentially provided with the inner spacer sleeve I8, the ring sleeve 9, the spacer sleeve 10, the test accompanying bearing I11 and the front gland 12, and the front gland 12 is fixed on the right side end surface of the hollow shaft 7 through bolts; the left side of the hollow shaft 7 is provided with a test accompanying bearing II 13, an inner spacer II 14, a test bearing 15, a loading sleeve 16, a loading sleeve end cover 17 and a rear gland 18 in sequence, and the hollow part of the middle section of the hollow shaft 7 is provided with a bakelite plug 19 which is in interference fit; the loading sleeve 16 is sleeved on the outer ring of the test bearing 15, and the loading sleeve 16 is in transition fit connection with the test bearing 15; the test bearing 15 is in interference fit with the hollow shaft 7, the axial position of the test bearing 15 on the hollow shaft 7 corresponds to the center of the annular groove on the loading sleeve 16, the loading sleeve end cover 17 is fixed on one side end surface of the loading sleeve 16 through a bolt, and the rear gland 18 is fixed on the left side end surface of the hollow shaft 7 through a bolt; the upper box body 4 is arranged in the outer circular rectangular ring grooves of the left support wheel 2 and the right support wheel 3, the size of the connecting part of the upper box body 4 and the left support wheel 2 and the right support wheel 3 corresponds to the size of the rectangular ring grooves of the left support wheel 2 and the right support wheel 3, the upper box body is just clamped in the rectangular ring grooves of the left support wheel 2 and the right support wheel 3, and the upper box body is fixed on the left support wheel 2 and the right support wheel 3 through bolts; the right end cover 6 is arranged at the right end of the hollow shaft 7, and the right end cover 6 is fixed on the right side end face of the right supporting wheel 3 through bolts.
The axial loading system B is arranged at the left side of the left supporting wheel 2, the axial loading system B comprises an axial loading sleeve 20, an axial cylinder 21, an axial cylinder sleeve 22, an axial cylinder piston 23, an under-ring oil nozzle 24 and an axial cylinder cover 25, the axial loading sleeve 20 is arranged between the axial cylinder piston 23 and the left end of the test shafting 5, the axial loading sleeve 20 is of a U-shaped ring structure, the bottom of the U-shaped ring is provided with a through hole connected with the axial cylinder piston 23, the outer ring of the U-shaped ring is provided with a key 34 connected with the left supporting wheel 2, and the key 34 is sleeved in a key groove of the central hole of the left supporting wheel 2; the axial oil cylinder 21 is fixed on the left end face of the left supporting wheel 2 through bolts, an axial oil cylinder sleeve 22 and an axial oil cylinder piston 23 are respectively arranged in the axial oil cylinder 21, an oil nozzle 24 under a ring is arranged at the right end of the axial oil cylinder piston 23, the right end of the oil nozzle 24 under the ring stretches into a hole of the hollow shaft 7 at the left end of the test shafting 5, lubricating oil is provided for the test bearing 15, and a pressure sensor and a proportional pressure reducing valve are connected to the axial oil cylinder cover 25.
The radial loading system C is arranged in a central hole of the upper box body 4, the radial loading system C comprises a radial oil cylinder 26, a radial oil cylinder piston 27, a radial loading rod 28 and a radial oil cylinder cover 29, the radial loading rod 28 is arranged at the central part of the bottom surface of the radial oil cylinder piston 27, the lower end of the radial loading rod 28 is arranged in an outer circular groove of a loading sleeve 16 of the test shafting 5, the central line of the radial loading rod 27 is coaxial with the center of a rolling body of a test bearing 15 on the test shafting 5 and the center of the circular groove of the loading sleeve 16, the radial oil cylinder 26 is fixed on the upper box body 4 through bolts, and the radial oil cylinder cover 29 is connected with a pressure sensor and a proportional pressure reducing valve.
The lubrication system D is arranged below the axial loading system B, and comprises a high-temperature oil supply system and a pressure regulating valve, and is connected with a connecting port of the axial oil cylinder 21 through a pipeline; the driving system E is arranged at the right end of the test shafting 5 and comprises a coupling 30, an electric spindle and a frequency converter, and the electric spindle is connected with the hollow shaft 7 through the coupling 30.
The specific test process of the invention is as follows: firstly, according to the installation mode of an aircraft engine bearing in the aircraft engine, each part of a test bed main body A, an axial loading system B, a radial loading system C, a lubricating system D and a driving system E are installed in place, after all the systems are connected, an electric spindle of the driving system E is started, a coupling 30 drives a hollow shaft 7 to rotate, the rotating speed of the electric spindle is controlled by a frequency converter, after the rotating speed of the hollow shaft 7 is stable, a proportional pressure reducing valve of the axial loading system B and a proportional pressure reducing valve of the radial loading system C loads an axial cylinder piston 23 and a radial cylinder piston 27, the load change of the axial cylinder piston 23 and the radial cylinder piston 27 is controlled, meanwhile, the loading condition of a test bearing 15 is monitored in real time through a pressure sensor, at the moment, the lubricating system D controls the oil supply temperature through a heating function of a high-temperature oil supply system, and the flow of test lubricating oil is regulated through a pressure regulating valve, so that the flow of the test lubricating oil reaches the requirement, each data is monitored and recorded in the test process, and the light load slip test of the test bearing 15 is completed.
The test results of this embodiment are as follows:
1 running-in test
Before the formal test, the running-in test is performed after the test bearing 15 is installed and the running condition of the tester is checked, the running-in test is performed according to the first requirement of the table, the running-in test lasts for 30 minutes, the tester runs normally during the running-in test, the vibration is stable, and each monitoring data is free from abnormality.
Table one: running-in test load spectrum meter
| Sequence number | Inner ring rotation speed r/min | Radial load N | Axial load N | Oil supply temperature DEG C | Test time min |
| 1 | 12340 | 470 | 1000 | Normal temperature | 5 |
| 2 | 13460 | 540 | 1000 | Normal temperature | 5 |
2. Formal test load
The load, the rotating speed, the oil supply temperature and the running time of the formal light-load slip test are carried out according to a second load spectrum.
And (II) table: light load slip test load spectrum meter
Through the test device, the test bearing 15 carries out 368-hour life test according to the load spectrum provided by the host computer user, the temperature of the bearing rises, and the vibration completely meets the use requirement of the user.
3. Data curve of test procedure
3.1 Bearing temperature line diagram
The oil supply temperature is normal temperature in the light-load slip test, the bearing temperature line diagram in the test process is shown in figure 6, and the temperature of the bearing slowly rises along with the test time in the test process, and abnormal fluctuation does not exist in the test process, so that the temperature of the bearing is not abnormal in the test process.
3.2 Current data line graph
The rotating speed is unchanged in the light-load slip test process, a current data line diagram in the test process is shown in fig. 7, and as can be seen from fig. 7, in the test process, the current fluctuates between 64 and 67A, the current change is wholly stable, and the normal operation of the test machine is indicated.
3.3 Bearing vibration line diagram
The bearing vibration line diagram in the test process is shown in fig. 8, and the vibration detection data is stable in the test process and free from abnormal fluctuation, so that the bearing vibration line diagram is stable in the test process and works normally as shown in fig. 8.
Conclusion:
The bearing completes a light-load slip test through the light-load slip test device, the bearing works normally in the test process, working surfaces such as a bearing raceway, a rolling body and the like are checked during and after the test, no peeling and no scratch caused by slip are generated, the bearing rotates flexibly, no abnormality is caused, and the test is ended normally.
The invention is not described in detail in the prior art.
Claims (8)
1. A bearing light load slip test device, comprising: the test bed comprises a test bed main body (A), an axial loading system (B), a radial loading system (C), a lubricating system (D) and a driving system (E), and is characterized in that: the test bed main body (A) comprises a supporting frame (1), a left supporting wheel (2), a right supporting wheel (3), an upper box body (4), a test shafting (5) and a right end cover (6); the left support wheel (2) and the right support wheel (3) are respectively arranged at the left side and the right side of the support frame (1), rectangular ring grooves are respectively arranged on the outer circles of the left support wheel (2) and the right support wheel (3), the rectangular ring grooves are just clamped at the upper part of the support frame (1), and are fixed on the support frame (1) through bolts; the test shafting (5) is arranged in a central hole of the right supporting wheel (3), and the test shafting (5) comprises a hollow shaft (7), an inner spacer sleeve I (8), a ring sleeve (9), a spacer sleeve (10), a test accompanying bearing I (11), a front gland (12), a test accompanying bearing II (13), an inner spacer sleeve II (14), a test bearing (15), a loading sleeve (16), a loading sleeve end cover (17) and a rear gland (18); the right side of the hollow shaft (7) is sequentially provided with an inner spacer bush I (8), a ring bush (9), a spacer bush (10), a test accompanying bearing I (11) and a front gland (12), the front gland (12) is fixed on the right side end face of the hollow shaft (7) through bolts, and the left side of the hollow shaft (7) is sequentially provided with a test accompanying bearing II (13), an inner spacer bush II (14), a test bearing (15), a loading bush (16), a loading bush end cover (17) and a rear gland (18); the loading sleeve (16) is sleeved on the outer ring of the test bearing (15), the end cover (17) of the loading sleeve is fixed on one side end surface of the loading sleeve (16) through a bolt, and the rear gland (18) is fixed on the left side end surface of the hollow shaft (7) through a bolt; the upper box body (4) is arranged in upper rectangular ring grooves of the left supporting wheel (2) and the right supporting wheel (3), and the upper box body (4) is fixed on the left supporting wheel (2) and the right supporting wheel (3) through bolts; the right end cover (6) is arranged at the right end of the hollow shaft (7), and the right end cover (6) is fixed on the right end face of the right supporting wheel (3) through bolts; the axial loading system (B) is arranged at the left side of the left supporting wheel (2) and is fixed on the left end face of the left supporting wheel (2) through bolts; the radial loading system (C) is arranged in a central hole of the upper box body (4) and is fixed on the upper box body (4) through bolts; the lubrication system (D) is arranged below the axial loading system (B) and is connected with a connecting port of the axial loading system (B) through a pipeline; the driving system (E) is arranged at the right end of the test shafting (5);
The axial loading system (B) comprises an axial loading sleeve (20), an axial oil cylinder (21), an axial oil cylinder sleeve (22), an axial oil cylinder piston (23), an annular oil nozzle (24) and an axial oil cylinder cover (25), wherein the axial loading sleeve (20) is arranged between the axial oil cylinder piston (23) and the left end of a test shafting (5), the axial loading sleeve (20) is of a U-shaped ring structure, the bottom of the U-shaped ring is provided with a through hole connected with the axial oil cylinder piston (23), the outer ring of the U-shaped ring is provided with a key (34) connected with a left supporting wheel (2), and the axial loading sleeve (20) is sleeved in a key groove of a central hole of the left supporting wheel (2) through the key (34); the axial oil cylinder (21) is fixed on the left end face of the left supporting wheel (2) through bolts, an axial oil cylinder sleeve (22) and an axial oil cylinder piston (23) are respectively arranged on the axial oil cylinder (21), a ring lower oil nozzle (24) is arranged at the right end of the axial oil cylinder piston (23), the right end of the ring lower oil nozzle (24) extends into a hole of a left hollow shaft (7) of the test shafting (5), and a pressure sensor and a proportional pressure reducing valve are connected to the axial oil cylinder cover (25);
The radial loading system (C) comprises a radial cylinder (26), a radial cylinder piston (27), a radial loading rod (28) and a radial cylinder cover (29), wherein the radial loading rod (28) is arranged at the center of the bottom surface of the radial cylinder piston (27), the lower end of the radial loading rod is arranged in an outer circular groove of a loading sleeve (16) of a test shafting (5), the center line of the radial loading rod (28) is coaxial with the center of a rolling body of a test bearing (15) on the test shafting (5) and the center of the circular groove of the loading sleeve (16), the radial cylinder (26) is fixed on an upper box body (4) through bolts, and a pressure sensor and a proportional pressure reducing valve are connected to the radial cylinder cover (29).
2. The bearing light-load slip test device according to claim 1, wherein: the support frame (1) is of a U-shaped support structure, and locating pins (35) for locating the left support wheel (2) and the right support wheel (3) are respectively arranged at the upper ends of the U-shaped supports.
3. The bearing light-load slip test device according to claim 1, wherein: the shape and the size of the rectangular ring grooves of the left supporting wheel (2) and the right supporting wheel (3) are consistent, and the size of the rectangular ring grooves corresponds to the connecting part of the upper box body (4) and the supporting frame (1).
4. The bearing light-load slip test device according to claim 1, wherein: the test bearing (15) is connected with the hollow shaft (7) in interference fit, the axial position of the test bearing (15) on the hollow shaft (7) corresponds to the center of the annular groove on the loading sleeve (16), and the test bearing (15) is connected with the loading sleeve (16) in transition fit.
5. The bearing light-load slip test device according to claim 1, wherein: the hollow shaft (7) is a hollow stepped shaft, and a bakelite plug (19) is arranged at the hollow part of the middle section of the hollow shaft and is in interference fit with the hollow part of the hollow shaft.
6. The bearing light-load slip test device according to claim 1, wherein: the right support wheel (3) on be provided with preceding nozzle (31), preceding nozzle (31) are fixed on the right-hand member excircle of right support wheel (3) through the bolt to link up to the logical inslot of right-hand member lid (6), the lower part of right support wheel (3) is provided with the oil return hole that link up, wherein is provided with end cap I (32), end cap II (33) in two oil return holes respectively.
7. The bearing light-load slip test device according to claim 1, wherein: the lubrication system (D) comprises a high Wen Gongyou system and a pressure regulating valve.
8. The bearing light-load slip test device according to claim 1, wherein: the driving system (E) comprises a shaft coupling (30), an electric spindle and a frequency converter, wherein the electric spindle is connected with a hollow shaft (7) of the test shafting (5) through the shaft coupling (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911145701.3A CN110895199B (en) | 2019-11-21 | 2019-11-21 | Bearing light-load slip test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911145701.3A CN110895199B (en) | 2019-11-21 | 2019-11-21 | Bearing light-load slip test device |
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| CN110895199A CN110895199A (en) | 2020-03-20 |
| CN110895199B true CN110895199B (en) | 2024-06-07 |
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| CN110895199A (en) | 2020-03-20 |
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