CN212379030U - High-speed rail gearbox bearing testing machine - Google Patents
High-speed rail gearbox bearing testing machine Download PDFInfo
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- CN212379030U CN212379030U CN202021597736.9U CN202021597736U CN212379030U CN 212379030 U CN212379030 U CN 212379030U CN 202021597736 U CN202021597736 U CN 202021597736U CN 212379030 U CN212379030 U CN 212379030U
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Abstract
The utility model relates to a high-speed rail gearbox bearing testing machine, which comprises a base, wherein a box body is fixedly arranged on the base, a cavity is arranged in the box body, and a main shaft for installing a testing bearing is arranged in the box body in a rotating manner; an oil injection hole is formed in the box body and communicated with the cavity, and an oil outlet hole is formed in the box body; the driving source is used for driving the main shaft to rotate; the axial loading mechanism is used for applying axial load to the test bearing; and a radial loading mechanism for applying a radial load to the test bearing. During testing, the test bearing is arranged on the main shaft, the main shaft is driven to rotate by the driving source, then pressure along the axial direction of the main shaft is applied to the test bearing by the axial loading mechanism, pressure along the radial direction of the main shaft is applied to the test bearing by the radial loading mechanism, and lubricating oil is filled into the cavity of the box body through the oil filling hole, so that the real working environment of the test bearing is simulated, the purpose of detecting the performance of the test bearing is realized, and the detection accuracy is improved.
Description
Technical Field
The utility model relates to a bearing test technical field, in particular to high-speed railway gearbox bearing testing machine.
Background
The bearing in the reduction gearbox of the high-speed railway or the subway is an important part, the indexes of the precision, the service life, the reliability and the like of the bearing play an important role in the performance and the safety of high-speed railway vehicles, and along with the further improvement of the speed of a railway passenger car, higher requirements are put forward on the reliability and the performance of the bearing. The bearing testing machine needs to complete various technical conditions, such as high-speed operation, axial loading and radial loading, so that a designer needs to meet the technical requirements of various testing parameters in a limited space of the testing machine in the process of designing process equipment.
Chinese patent with application publication number CN109855872A discloses a general roller bearing testing machine, which comprises a frame, it is provided with the main shaft to rotate in the frame, the spacer sleeve is equipped with two experimental bearings on the main shaft, the cover is equipped with the bush on every experimental bearing, the frame includes the backup pad, set up on the bush and be used for with the draw-in groove of backup pad joint, be provided with in the frame and be used for applying radial tensile first pneumatic cylinder to the main shaft, be provided with axial loading mechanism in the frame, the fixed motor that is provided with in the frame, pass through the coupling joint between the output shaft of connecting axle and motor. During testing, the test bearing is installed on the main shaft, radial tension is applied to the main shaft through the first hydraulic cylinder, axial pressure is applied to the main shaft through the axial loading mechanism, and the main shaft is driven to rotate through the motor, so that a simulation test of the bearing is achieved.
The bearing testing machine has the disadvantages that the bearing testing machine is difficult to be applied to the bearing in the high-speed rail reduction box because the bearing in the high-speed rail or subway reduction box is used in the environment of high-speed rotation and oil lubrication, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high-speed railway gear box bearing testing machine has and is convenient for simulate the true operating mode of bearing, improves the advantage of experimental accuracy.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a high-speed rail gearbox bearing testing machine comprises a base, wherein a box body is fixedly arranged on the base, a cavity is formed in the box body, and a main shaft for mounting a testing bearing is rotatably arranged in the box body;
an oil filling hole for filling lubricating oil is formed in the box body and is communicated with the cavity, and an oil outlet is formed in the box body;
the driving source is used for driving the main shaft to rotate;
the axial loading mechanism is used for applying axial load to the test bearing; and the number of the first and second groups,
and the radial loading mechanism is used for applying radial load to the test bearing.
By adopting the technical scheme, during testing, the testing bearing is arranged on the main shaft, the main shaft is driven to rotate by the driving source, then the axial loading mechanism applies pressure to the testing bearing along the axial direction of the main shaft, the radial loading mechanism applies pressure to the testing bearing along the radial direction of the main shaft, and lubricating oil is filled into the cavity of the box body through the oil filling hole, so that the real working environment of the testing bearing is simulated, the purpose of detecting the performance of the testing bearing is realized, and the detection accuracy is improved.
The present invention may be further configured in a preferred embodiment as: the main shaft is sleeved with a test bearing seat used for being abutted to a test bearing, and a detection element used for detecting the temperature and the vibration of the test bearing is arranged in the test bearing seat in a penetrating mode.
By adopting the technical scheme, the purpose of detecting the temperature and the vibration of the test bearing is realized through the detection element, and the temperature and the vibration parameters of the test bearing can be conveniently known in real time in the test process.
The present invention may be further configured in a preferred embodiment as: the main shaft is sleeved with a bearing, and a bearing seat is arranged on the bearing; first guiding hole has been seted up along the radial of main shaft on the box, radial loading mechanism includes first hydro-cylinder and first guide bar, first guide bar slides and wears to locate in the first guiding hole, first hydro-cylinder is fixed to be set up on the box, the one end that the piston rod of first hydro-cylinder is close to first guide bar is provided with first pressure sensor.
By adopting the technical scheme, during the test, the first oil cylinder is started, the first oil cylinder drives the first guide rod to move, the first guide rod extrudes the bearing seat, then the pressure is transmitted to the bearing and the main shaft, and the main shaft transmits the pressure to the test bearing, so that the purpose of applying radial load to the test bearing is realized; the first guide rod is matched with the guide hole, so that the main shaft is guaranteed to be stressed by pressure perpendicular to the axial direction of the main shaft, the main shaft is effectively prevented from being stressed by pressure in other directions, and the accuracy of the test is improved; and the first pressure sensor is used to detect the applied radial load.
The present invention may be further configured in a preferred embodiment as: and a first joint ball bearing is arranged between the first guide rod and the bearing seat.
Through adopting above-mentioned technical scheme, the straightness that hangs down that the main shaft received pressure is guaranteed in the setting of first joint ball bearing, prevents effectively that the bearing of accepting from receiving the pressure of other directions and leading to accepting the bearing aversion or slope.
The present invention may be further configured in a preferred embodiment as: the axial loading mechanism comprises a second oil cylinder and a second guide rod, a second guide hole is formed in the side wall of the box body along the axial direction of the main shaft, the second guide rod penetrates through the second guide hole in a sliding mode, the second oil cylinder is fixedly arranged on the box body, a second pressure sensor is arranged at one end, close to the second guide rod, of a piston rod of the second oil cylinder, a bearing stressing seat is fixedly arranged at one end, close to the main shaft, of the second guide rod, and the bearing stressing seat is abutted to the outer ring of the test bearing.
By adopting the technical scheme, during the test, the second oil cylinder is started, the second oil cylinder drives the second guide rod to move, the second guide rod extrudes the bearing stress application seat, and the bearing stress application seat applies axial pressure to the test bearing; the second guide hole is matched with the second guide rod, so that the test bearing is only subjected to pressure along the axial direction of the main shaft, and the test precision is ensured.
The present invention may be further configured in a preferred embodiment as: and an extension section is fixedly arranged at one end of the bearing stress application seat, which is far away from the second guide rod, and the extension section is abutted against the side wall of the outer ring of the test bearing, which is far away from the main shaft.
Through adopting above-mentioned technical scheme, the main shaft was kept away from to the lateral wall butt in extension section and test bearing's outer lane, prevents that test bearing's outer lane from because of expend with heat and contract with cold deformation takes place the slope, leads to test bearing's roller atress uneven, prevents to influence experimental.
The present invention may be further configured in a preferred embodiment as: and a second joint ball bearing is arranged between the second guide rod and the bearing stress application seat.
By adopting the technical scheme, the second joint ball bearing is arranged, so that the pressure applied to the bearing stress application seat is always along the axial direction of the main shaft, and the test precision is ensured.
The present invention may be further configured in a preferred embodiment as: the bottom wall of the bearing stressing seat is provided with a guide groove along the axial direction of the main shaft, and the test bearing seat is fixedly provided with a guide block connected with the guide groove in a sliding manner.
Through adopting above-mentioned technical scheme, guide way and guide block cooperation for bearing afterburning seat can only follow the axial displacement of main shaft, prevents that bearing afterburning seat from swinging along other directions.
The present invention may be further configured in a preferred embodiment as: a first guide sleeve is arranged in the first guide hole, and a first sealing element is arranged between the first guide sleeve and the first guide rod; and a second guide sleeve is arranged in the second guide hole, and a second sealing element is arranged between the second guide sleeve and the second guide rod.
By adopting the technical scheme, the first sealing element is arranged, so that the purpose of sealing the gap between the first guide rod and the first guide sleeve is achieved; the second sealing piece plays a role in sealing a gap between the second guide sleeve and the second guide rod, a large amount of oil mist is generated in the cavity due to the high-speed rotation of the main shaft, the first sealing piece and the second sealing piece improve the overall sealing performance, and the oil mist leakage is effectively prevented.
The present invention may be further configured in a preferred embodiment as: still include the cooler, the oil filler point intercommunication has the oiling pipe, the oil outlet intercommunication has an oil pipe, the output of going out oil pipe and the input intercommunication of cooler, the output of cooler and the input intercommunication of oiling pipe, be provided with the oil pump on the oiling pipe.
Through adopting above-mentioned technical scheme, at experimental in-process, the main shaft is high-speed rotatory, leads to lubricating oil temperature higher, and oiling pipe, play oil pipe and oil pump cooperation to for experimental bearing circulation oiling, the purpose of adjusting the oil temperature is played in the setting of cooler, makes experimental bearing can test at the temperature under the true operating mode, improves experimental precision.
To sum up, the utility model discloses an following at least one useful technological effect:
during testing, a test bearing is mounted on a main shaft, the main shaft is driven to rotate by a driving source, then pressure along the axial direction of the main shaft is applied to the test bearing by an axial loading mechanism, pressure along the radial direction of the main shaft is applied to the test bearing by a radial loading mechanism, and lubricating oil is filled into a cavity of a box body through an oil filling hole so as to simulate the real working environment of the test bearing, achieve the purpose of detecting the performance of the test bearing and improve the accuracy of detection;
secondly, the bottom of the test bearing, namely the side close to the base, is completely immersed by the lubricating oil, and the pressure is higher than that of the top of the test bearing, so that the temperature and the vibration are usually different between the two positions; the two detection elements respectively detect the temperature and vibration conditions of the highest part and the lowest part of the test bearing, so that the accuracy of a test result is improved;
the first guide rod is matched with the guide hole, so that the main shaft is guaranteed to be stressed by pressure perpendicular to the axial direction of the main shaft, the main shaft is effectively prevented from being stressed by pressure in other directions, and the accuracy of the test is improved; and the first pressure sensor is used to detect the applied radial load;
fourthly, because the main shaft rotates at a high speed, a large amount of oil mist is generated in the cavity, the first sealing element and the second sealing element improve the whole sealing performance, and the oil mist is effectively prevented from leaking.
Drawings
Fig. 1 is a front view of the overall structure of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
fig. 4 is a schematic structural diagram of the spindle, the radial loading mechanism and the axial loading mechanism of the present invention;
fig. 5 is a schematic structural diagram of the radial loading mechanism of the present invention;
fig. 6 is a schematic structural diagram of the axial loading mechanism of the present invention.
Reference numerals: 1. a base; 11. a motor base; 111. a drive source; 112. fixing the bolt; 12. a T-shaped slot; 121. a T-shaped block; 2. a box body; 21. an oil filler hole; 211. an oil filling pipe; 2111. an oil pump; 2112. a flow meter; 22. an oil outlet hole; 221. an oil outlet pipe; 23. a first guide hole; 231. a first guide sleeve; 2311. a first seal member; 2312. a first O-ring seal; 2313. a first groove; 24. a second guide hole; 241. a second guide sleeve; 2411. a second seal member; 2412. a second O-ring seal; 2413. a second groove; 25. a first housing; 251. a sealing groove; 2511. a sealing strip; 26. a second housing; 3. a main shaft; 31. a bearing is received; 32. bearing seats are received; 33. a coupling; 4. a cooling machine; 5. an axial loading mechanism; 51. a second cylinder; 511. a second pressure sensor; 52. a second guide bar; 521. a bearing stress application seat; 5211. a guide groove; 5212. an extension section; 522. a second joint ball bearing; 523. a second copper sleeve; 6. a radial loading mechanism; 61. a first cylinder; 611. a first pressure sensor; 62. a first guide bar; 621. a first joint ball bearing; 622. a first copper bush; 7. testing the bearing seat; 71. a detection element; 72. a guide block; 73. an oil passage; 74. clamping a shoulder; 8. a filter; 9. a butting sleeve; 10. a collar.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a high-speed rail gearbox bearing testing machine comprises a base 1, wherein a box body 2 is fixedly arranged on the base 1 through bolts, and a main shaft 3 for mounting a test bearing is rotatably arranged in the box body 2; a cavity is arranged in the box body 2, and the main shaft 3 is horizontally arranged in the cavity. A driving source 111 for driving the main shaft 3 to rotate; an axial loading mechanism 5 for applying an axial load to the test bearing; and a radial loading mechanism 6 for applying a radial load to the test bearing.
As shown in fig. 2 and 3, the box body 2 includes a first housing 25 and a second housing 26, the first housing 25 is fixedly disposed on the base 1, and the first housing 25 and the second housing 26 are fixedly connected by bolts. A sealing groove 251 is formed in the side wall of the first housing 25 close to the second housing 26, a sealing strip 2511 is embedded in the sealing groove 251, and the sealing strip 2511 is an O-shaped sealing ring.
As shown in fig. 1, the driving source 111 is a motor, the motor is an ac servo motor, and the maximum rotation speed of the motor is 4500 r/min. A motor base 11 is arranged on the base 1, and a motor is fixedly arranged on the motor base 11; the motor is coaxially and fixedly connected with the main shaft 3 through a coupler 33, and a torque sensor (not shown in the figure) is arranged on the coupler 33.
As shown in fig. 2 and 3, the top wall of the base 1 is provided with at least two T-shaped grooves 12 along the axial direction of the spindle 3, the T-shaped grooves 12 are arranged in parallel, a T-shaped block 121 is slidably arranged in the T-shaped grooves 12, and a fixing bolt 112 connected with the T-shaped block 121 through a thread is arranged on the motor base 11. When the test bearing is to be assembled and disassembled, the fixing bolt 112 is loosened, and then the motor is moved in a direction away from the main shaft 3, so that the test bearing can be assembled and disassembled.
As shown in fig. 4, the main shaft 3 is sleeved with a receiving bearing 31, the limit rotation speed of the receiving bearing 31 is not lower than 3500r/min, and the receiving bearing 31 is a cylindrical roller bearing; the receiving bearing 31 is sleeved with a receiving bearing seat 32. In this embodiment, two test bearings are provided, and are respectively located at two sides of the bearing 31, and the distances between the two test bearings and the bearing 31 are equal; to ensure that both test bearings are subjected to the same amount of radial pressure.
As shown in fig. 4, a test bearing seat 7 for abutting against a test bearing is sleeved on the main shaft 3, a detection element 71 for detecting the temperature and vibration of the test bearing is arranged in the test bearing seat 7 in a penetrating manner, and the detection element 71 is a temperature vibration sensor; the temperature vibration sensor can detect the temperature and vibration of the test bearing at the same time, and the temperature and vibration parameters of the test bearing can be known in real time in the test process conveniently.
As shown in fig. 4, in order to improve the detection accuracy, at least two detection elements 71 are provided for each test bearing seat 7, in this embodiment, two detection elements 71 are provided for each test bearing, wherein one detection element 71 is used for detecting the highest point of the test bearing, and the other detection element 71 is used for detecting the lowest point of the test bearing. It should be noted that the highest point of the test bearing herein refers to a position where the outer ring of the test bearing is far away from the base 1, and similarly, the lowest point refers to a position where the outer ring of the test bearing is close to the base 1. The roof and the diapire of experimental bearing frame 7 all set up the inspection hole (not shown in the figure) that runs through to experimental bearing outer lane, and temperature vibration sensor wears to establish in the inspection hole and contradicts with experimental bearing's outer lane.
During the test, the bottom of the test bearing, namely the side of the test bearing close to the base 1 is completely immersed by the lubricating oil, and the pressure is higher than the top of the test bearing, so the temperature and the vibration at the two positions are usually different; the two detection elements 71 respectively detect the temperature and the vibration condition of the highest part and the lowest part of the test bearing, and the accuracy of the test result is improved.
As shown in fig. 2 and 4, an oil filling hole 21 for filling lubricating oil is formed in the tank body 2, the oil filling hole 21 is communicated with the cavity, and an oil outlet 22 is formed in the tank body 2; the oil filler hole 21 is located above the oil outlet hole 22. The oil filling hole 21 is communicated with an oil filling pipe 211, and the oil outlet hole 22 is communicated with an oil outlet pipe 221. An oil duct 73 is formed in the test bearing seat 7, and the oil duct 73 is communicated with the oil filling pipe 211. And each test bearing seat 7 is provided with two oil ducts 73, and the two oil ducts 73 are located at two ends of the test bearing. When oiling, be convenient for lubricating oil get into experimental bearing for experimental bearing lubrication is even, improves experimental accuracy of experimental bearing and life-span.
In addition, as shown in fig. 2, a cooler 4 is further provided, and the cooler 4 may be a plate heat exchanger; the output end of the oil outlet pipe 221 is communicated with the input end of the cooler 4, the output end of the cooler 4 is communicated with the input end of the oil filling pipe 211, and the oil filling pipe 211 is provided with an oil pump 2111.
In the test process, the main shaft 3 rotates at a high speed, so that the temperature of the lubricating oil is high, and in the actual test process, the oil temperature reaches about 120 ℃. The oil injection pipe 211, the oil outlet pipe 221 and the oil pump 2111 are matched to circularly inject oil to the test bearing, and the purpose of adjusting the oil temperature is achieved through the arrangement of the cooler 4, so that the test bearing can be tested at the temperature under the real working condition, and the test precision is improved.
As shown in fig. 2, the oil inlet pipe 211 and/or the oil outlet pipe 221 are/is provided with a filter 8 for filtering lubricating oil, and in the present embodiment, the oil outlet pipe 221 and the oil inlet pipe 211 are both communicated with the filter 8 for filtering lubricating oil. A flow meter 2112 communicated with the oil filling pipe 211 is arranged on the box body 2, and a liquid level meter (not shown in the figure) is arranged on the box body 2 and is communicated with the cavity of the box body 2; in order to monitor the level of the lubricant inside the tank 2.
As shown in fig. 5, the radial loading mechanism 6 includes a first oil cylinder 61 and a first guide rod 62, a first guide hole 23 is formed in the box body 2 along the radial direction of the main shaft 3, and the first guide rod 62 is slidably inserted into the first guide hole 23. A first guide sleeve 231 is disposed in the first guide hole 23, and the first guide sleeve 231 is sleeved on the first guide rod 62. When a load is applied to the piston rod of the first oil cylinder 61, a slight amount of inclination may occur, and the first guide rod 62 plays a role in guiding, so that the perpendicularity of the radial load is ensured.
As shown in fig. 5, a first copper sleeve 622 is disposed between the first guide sleeve 231 and the first guide rod 62, and the first copper sleeve 622 is sleeved on the first guide rod 62 to reduce friction force on the first guide rod 62, reduce wear on the first guide rod 62, and prolong service life.
In addition, as shown in fig. 5, a first sealing member 2311 is disposed between the first guide sleeve 231 and the first guide rod 62, and the first sealing member 2311 is a packing set disposed on the first guide rod 62. A first O-ring 2312 is sleeved on the first guide sleeve 231; specifically, a first groove 2313 is formed on the outer wall of the first guide sleeve 231 close to the first guide hole 23 along the circumferential direction of the first guide sleeve 231, and a first O-ring 2312 is embedded in the first groove 2313 and abuts against the hole wall of the first guide hole 23.
As shown in fig. 5, the first cylinder 61 is vertically and fixedly disposed on the top wall of the box body 2, one end of the piston rod of the first cylinder 61 close to the first guide rod 62 is provided with a first pressure sensor 611, and the first pressure sensor 611 abuts against the top wall of the first guide rod 62. A first joint ball bearing 621 is arranged between the first guide rod 62 and the bearing 31 seat; so as to ensure the verticality of the pressure applied to the main shaft 3 and effectively prevent the bearing 31 from swinging or inclining caused by the pressure applied to the bearing 31 in other directions.
As shown in fig. 6, the axial loading mechanism 5 includes a second oil cylinder 51 and a second guide rod 52, a second guide hole 24 is formed in the side wall of the box body 2 along the axial direction of the spindle 3, and the second guide rod 52 is slidably inserted into the second guide hole 24. A second guide sleeve 241 is arranged in the second guide hole 24, a second sealing element 2411 is arranged between the second guide sleeve 241 and the second guide rod 52, and the second sealing element 2411 is a packing. A second O-ring 2412 is sleeved on the second guide sleeve 241, specifically, a second groove 2413 is formed on the outer wall of the second guide sleeve 241 close to the second guide hole 24 along the circumferential direction of the second guide sleeve 241, and the second O-ring 2412 is embedded in the second groove 2413 and abuts against the hole wall of the second guide hole 24.
As shown in fig. 6, a second copper sleeve 523 is disposed between the second guide sleeve 241 and the second guide rod 52, and the second copper sleeve 523 is sleeved on the second guide rod 52. The second oil cylinder 51 is horizontally and fixedly arranged on the box body 2, and one end of a piston rod of the second oil cylinder 51 close to the second guide rod 52 is provided with a second pressure sensor 511.
As shown in fig. 4 and 6, a bearing biasing seat 521 is fixedly provided at one end of the second guide rod 52 close to the spindle 3, and one end of the bearing biasing seat 521 remote from the second guide rod 52 abuts against an end surface of the outer ring of the test bearing close to the second guide rod 52. An extension 5212 is fixedly provided at an end of the bearing biasing base 521 remote from the second guide rod 52, and the extension 5212 abuts against a side wall of the outer ring of the test bearing remote from the main shaft 3. The main shaft 3 is sleeved with a butting sleeve 9, one end of the butting sleeve 9 is butted with the inner ring of the test bearing, and the other end of the butting sleeve is butted with the inner ring of the bearing 31.
As shown in fig. 4, a collar 10 is fitted over the test bearing away from the second cylinder 51, and the collar 10 abuts against the outer ring of the test bearing. The test bearing seat 7 adjacent to the collar 10 is provided with a shoulder 74 that abuts against the end face of the collar 10. A gap exists between the lantern ring 10 and the bearing stress application seat 521 and the test bearing seat 7.
During the test, the temperature is high, so that the test bearing deforms due to expansion caused by heat and contraction caused by cold; the extension 5212 and the collar 10 play a role in limiting the radial degree of freedom of the test bearing, so that the outer ring of the test bearing is prevented from inclining due to thermal expansion and cold contraction deformation, and the influence on the test caused by uneven stress of the roller of the test bearing is prevented.
As shown in fig. 6, a second joint ball bearing 522 is arranged between the second guide rod 52 and the bearing force application base 521; the pressure applied to the bearing force application seat 521 is always along the axial direction of the main shaft 3, so that the test precision is ensured.
As shown in fig. 6, in order to allow the bearing biasing member 521 to move only in the axial direction of the spindle 3, the bearing biasing member 521 is prevented from swinging in other directions; a guide groove 5211 is formed in the bottom wall of the bearing force application seat 521 along the axial direction of the main shaft 3, and a guide block 72 slidably connected with the guide groove 5211 is fixedly arranged on the test bearing seat 7. The guide block 72 is located in the cavity, and the width of the guide block 72 is adapted to the guide groove 5211.
The specific operation process comprises the following steps: during testing, the two test bearings are arranged on the main shaft 3, the motor is started, and the motor drives the main shaft 3 to rotate; starting the first oil cylinder 61 and the second oil cylinder 51, driving the second guide rod 52 to move by the second oil cylinder 51, extruding the bearing stressing seat 521 by the second guide rod 52, and applying axial pressure to the test bearing by the bearing stressing seat 521; the first oil cylinder 61 drives the first guide rod 62 to move, the first guide rod 62 extrudes the bearing seat 32, then the pressure is transmitted to the bearing 31 and the main shaft 3, and the main shaft 3 transmits the pressure to the test bearing so as to apply radial load to the test bearing. Lubricating oil is filled into the cavity of the box body 2 through the oil filling hole 21 so as to simulate the real working environment of the test bearing and achieve the purpose of detecting the performance of the test bearing; the first guide rod 62 plays a role in guiding, so that the bearing pedestal 32 is only pressed in the radial direction of the main shaft 3, and the detection accuracy is effectively improved; while preventing the female bearing 31 from being shifted or tilted.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a high-speed railway gearbox bearing testing machine, includes base (1), its characterized in that: a box body (2) is fixedly arranged on the base (1), a cavity is arranged in the box body (2), and a main shaft (3) for mounting a test bearing is rotatably arranged in the box body (2);
an oil filling hole (21) used for filling lubricating oil is formed in the box body (2), the oil filling hole (21) is communicated with the cavity, and an oil outlet (22) is formed in the box body (2);
the device also comprises a driving source (111) for driving the main shaft (3) to rotate;
an axial loading mechanism (5) for applying an axial load to the test bearing; and the number of the first and second groups,
and the radial loading mechanism (6) is used for applying radial load to the test bearing.
2. The high-speed rail gearbox bearing testing machine according to claim 1, characterized in that: the main shaft (3) is sleeved with a test bearing seat (7) used for being abutted to a test bearing, and a detection element (71) used for detecting the temperature and the vibration of the test bearing is arranged in the test bearing seat (7) in a penetrating mode.
3. The high-speed rail gearbox bearing testing machine according to claim 2, characterized in that: a bearing (31) is sleeved on the main shaft (3), and a bearing seat (32) is arranged on the bearing (31); first guiding hole (23) have been seted up along the radial of main shaft (3) on box (2), radial loading mechanism (6) include first hydro-cylinder (61) and first guide bar (62), first guide bar (62) slide and wear to locate in first guiding hole (23), first hydro-cylinder (61) are fixed to be set up on box (2), the one end that the piston rod of first hydro-cylinder (61) is close to first guide bar (62) is provided with first pressure sensor (611).
4. The high-speed rail gearbox bearing testing machine of claim 3, characterized in that: a first joint ball bearing (621) is arranged between the first guide rod (62) and the bearing (31) seat.
5. The high-speed rail gearbox bearing testing machine of claim 4, characterized in that: the axial loading mechanism (5) comprises a second oil cylinder (51) and a second guide rod (52), a second guide hole (24) is formed in the side wall of the box body (2) along the axial direction of the main shaft (3), the second guide rod (52) penetrates through the second guide hole (24) in a sliding mode, the second oil cylinder (51) is fixedly arranged on the box body (2), a second pressure sensor (511) is arranged at one end, close to the second guide rod (52), of a piston rod of the second oil cylinder (51), a bearing stress application seat (521) is fixedly arranged at one end, close to the main shaft (3), of the second guide rod (52), and the bearing stress application seat (521) is abutted to the outer ring of the test bearing.
6. The high-speed rail gearbox bearing testing machine of claim 5, characterized in that: an extension section (5212) is fixedly arranged at one end, far away from the second guide rod (52), of the bearing stress application seat (521), and the extension section (5212) is abutted against the side wall, far away from the main shaft (3), of the outer ring of the test bearing.
7. The high-speed rail gearbox bearing testing machine of claim 6, characterized in that: and a second joint ball bearing (522) is arranged between the second guide rod (52) and the bearing stress application seat (521).
8. The high-speed rail gearbox bearing testing machine of claim 7, characterized in that: a guide groove (5211) is formed in the bottom wall of the bearing stressing seat (521) along the axial direction of the main shaft (3), and a guide block (72) connected with the guide groove (5211) in a sliding mode is fixedly arranged on the test bearing seat (7).
9. The high-speed rail gearbox bearing testing machine according to claim 6 or 8, characterized in that: a first guide sleeve (231) is arranged in the first guide hole (23), and a first sealing piece (2311) is arranged between the first guide sleeve (231) and the first guide rod (62); a second guide sleeve (241) is arranged in the second guide hole (24), and a second sealing element (2411) is arranged between the second guide sleeve (241) and the second guide rod (52).
10. The high-speed rail gearbox bearing testing machine according to claim 1, characterized in that: still include cooler (4), oil filler point (21) intercommunication has oiling pipe (211), oil outlet point (22) intercommunication has oil pipe (221), the output of oil pipe (221) and the input intercommunication of cooler (4), the output of cooler (4) and the input intercommunication of oiling pipe (211), be provided with oil pump (2111) on oiling pipe (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021597736.9U CN212379030U (en) | 2020-08-04 | 2020-08-04 | High-speed rail gearbox bearing testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021597736.9U CN212379030U (en) | 2020-08-04 | 2020-08-04 | High-speed rail gearbox bearing testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212379030U true CN212379030U (en) | 2021-01-19 |
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| CN202021597736.9U Active CN212379030U (en) | 2020-08-04 | 2020-08-04 | High-speed rail gearbox bearing testing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804440A (en) * | 2021-08-16 | 2021-12-17 | 人本股份有限公司 | Test device for testing friction torque of oil bath lubrication bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113804440A (en) * | 2021-08-16 | 2021-12-17 | 人本股份有限公司 | Test device for testing friction torque of oil bath lubrication bearing |
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