CN112213102A - Device for simulating rolling bearing slipping - Google Patents
Device for simulating rolling bearing slipping Download PDFInfo
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- CN112213102A CN112213102A CN202011121588.8A CN202011121588A CN112213102A CN 112213102 A CN112213102 A CN 112213102A CN 202011121588 A CN202011121588 A CN 202011121588A CN 112213102 A CN112213102 A CN 112213102A
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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
The invention discloses a device for simulating the slipping of a rolling bearing, which comprises a first power device, a second power device, a coupler and a fixed seat, wherein the first power device and the second power device are respectively arranged at two sides of the fixed seat; according to the device for simulating the sliding of the rolling bearing, the sliding rotating speed of the bearing retainer is detected through the adjusting structure, different pressures are applied to the test rotating shaft by matching with the hydraulic cylinder, so that the rotating speed of the bearing retainer is simultaneously controlled and detected by the detection bearing under different pressure states, and vibration data and sliding data generated when the rolling bearing slides are accurately detected.
Description
Technical Field
The invention belongs to the technical field of bearing detection, and particularly relates to a device for simulating the sliding of a rolling bearing.
Background
The rolling bearing is used as an important component of a transmission system of various engineering machinery, and whether the rolling bearing fails or not directly influences the service life of the relevant engineering machinery. In most rolling bearing applications, the operating environment is suitable enough to ensure that the motion between the bearing rollers and the inner and outer races is pure rolling. In some light-load and high-speed operation conditions, such as a main shaft bearing of an aircraft engine, retainer slippage and roller slippage can occur inside the bearing, and relative sliding among components inside the bearing can cause friction and wear inside the bearing and finally damage to the inner ring and outer ring raceways and the roller surfaces of the bearing, so that the bearing fails. Therefore, the external factors of the rolling bearing slipping and the influence of various factors on the internal slipping condition of the rolling bearing are known, so that the bearing failure mechanism can be further analyzed, and the running state and the reasonable use environment of the rolling bearing can be more scientifically mastered. However, due to the limitation of the detection method and the operation environment, the bearing operating in the actual environment cannot provide the slipping condition inside the bearing and the influence of the factors such as load, rotating speed, lubrication and the like on the bearing slipping. Therefore, a set of rolling bearing slippage detection and influence factor research experiment system is particularly important for bearing slippage research.
At present, no experiment system for testing and researching the sliding condition of the rolling bearing retainer exists in China. The difficulty lies in that: 1. the slip rate of the rolling bearing retainer is difficult to detect in actual test; 2. the experimental system needs to integrate a plurality of modules to realize the aspect of testing the sliding rate of the rolling bearing retainer for researching a plurality of influence factors, and the sliding condition inside the bearing is expressed by the sliding rate of the retainer or the sliding rate of the roller. The cage slip ratio is generally used to characterize the slip condition of the bearing interior as a whole, and its common calculation formula is as follows:
theoretical rotary formula of the retainer:
γ＝Dcosα/dm
in the formula: n ismCage rotation speed (r/min);
ni-inner ring rotational speed (r/min);
no-outer ring rotation speed (r/min);
d-ball diameter (mm);
α -contact angle (rad);
dm-bearing pitch circle diameter (mm);
slip ratio S: (theoretical rotation speed-actual rotation speed)/theoretical rotation speed:
s: slip rate
nm: theoretical rotational speed (r/min) of the cage;
ωc: actual rotational speed (r/min) of the cage;
as can be seen from the above formula, except for nm、niThe rest are the geometric parameters of the bearing except the unknown numbers. Wherein n isiIs the bearing inner ring rotational speed, which is equal to the rotational speed of the shaft, and the actual rotational speed n of the cagemAre often difficult to obtain; in the aspect of the influence factors of the sliding of the retainer, the factors influencing the sliding condition in the rolling bearing mainly comprise the rotating speed of the inner ring, the load of the bearing, the lubricating condition and the like. The bearing retainer slip rate comprehensive research is realized by integrating related researches of several influencing factors into one experiment system, and the comprehensive research is another problem to be solved in the experiment system building process.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device for simulating the sliding of a rolling bearing, wherein the sliding rotating speed of a bearing retainer is detected by an adjusting structure, and different pressures are applied to a test rotating shaft by matching with a hydraulic cylinder, so that the rotating speed of the bearing retainer is simultaneously controlled and detected by the detection bearing under different pressure states, and the vibration data and the sliding data generated when the rolling bearing slides are accurately detected.
A device for simulating rolling bearing slippage comprises a first power device, a second power device, a coupler and a fixed seat, wherein the first power device and the second power device are respectively arranged on two sides of the fixed seat; the adjusting structure comprises a speed adjusting rotating shaft and a speed adjusting seat fixed on the fixing seat, one end of the speed adjusting rotating shaft is connected with the coupler, the other end of the speed adjusting rotating shaft is connected with an adjusting gripper, a speed adjusting supporting bearing is sleeved on the speed adjusting rotating shaft, and the speed adjusting supporting bearing is fixed on the speed adjusting seat.
Preferably, the detection mechanism comprises a test rotating shaft, a supporting positioning seat, a pressure application seat and a detection seat, wherein the supporting positioning seat, the pressure application seat and the detection seat are fixed on the fixing seat, the test rotating shaft is sleeved with a detection bearing, a loading bearing and a supporting bearing, the loading bearing is arranged between the detection bearing and the supporting bearing, the detection bearing is arranged on the detection seat, the supporting bearing is arranged on the supporting positioning seat, a hydraulic cylinder is fixed on the pressure application seat, a lifting block is arranged on a power rod of the hydraulic cylinder, the loading bearing is arranged on the lifting block, one end of the test rotating shaft is connected with the coupler, and the detection bearing on the other end of the test rotating shaft is matched with the adjusting structure; and the detection seat is provided with a vibration sensor.
Preferably, adjust the tongs and grab the finger including changeing the board and two at least regulation, it grabs the dovetail that the finger slided to offer the confession regulation on the commentaries on classics board, adjust and grab the finger including forked tail slider and telescopic adjusting rod, forked tail slider sets up in the dovetail, telescopic adjusting rod one end is connected on forked tail slider, the telescopic adjusting rod other end is connected with the double-screw bolt, run through a plurality of locking screw in the dovetail, be provided with the stop screw of fixed forked tail slider in the locking screw.
Preferably, one end of the telescopic adjusting rod penetrates through the dovetail sliding block, a stop screw for fixing the telescopic adjusting rod is arranged on the dovetail sliding block, and a transition through groove for the telescopic adjusting rod to penetrate through is formed in the dovetail groove.
Preferably, the coupling is a flexible coupling of plum blossom type; the motor is a stepping motor.
Preferably, the telescopic adjusting rod further comprises a locking cover and a locking block arranged in the locking cover, wherein an external thread meshed with the locking cover is arranged at one end of the telescopic adjusting rod, a waist-shaped adjusting hole is formed in the locking cover, and one end of the stud penetrates through the waist-shaped adjusting hole and is connected with the locking block.
Preferably, a pressure sensor is arranged between the hydraulic cylinder and the lifting block.
Preferably, the lifting block is connected with a slide rail, and the slide rail is fixed on the pressure application seat.
Preferably, one end of the test rotating shaft, which is close to the adjusting structure, is provided with a stepped shaft.
Preferably, the test device further comprises a fixing ring, the fixing ring is sleeved outside the test rotating shaft, a locking broken groove is formed in the fixing ring, and a locking pin is arranged in the locking broken groove.
Has the advantages that:
(1) according to the device for simulating the sliding of the rolling bearing, the sliding rotating speed of the bearing retainer is detected through the adjusting structure, different pressures are applied to the test rotating shaft by matching with the hydraulic cylinder, so that the rotating speed of the bearing retainer is simultaneously controlled and detected by the detection bearing under different pressure states, and vibration data and sliding data generated when the rolling bearing slides are accurately detected.
(2) According to the device for simulating the rolling bearing slip, the relative position between the adjusting grabbing finger and the axis of the testing rotating shaft is adjusted by moving the adjusting grabbing finger, so that the adjusting grabbing finger can finish the detection of the rolling bearings with different sizes.
(3) The device for simulating the rolling bearing to slip is novel in structure and convenient to operate, the fixed inner ring and the fixed outer ring are matched to install a plurality of smaller rolling bearings or larger rolling bearings, so that the bearing is more convenient to install and disassemble, and the condition that one end of the test rotating shaft for installing the detection bearing is provided with more stepped shafts to delay the adjustment of the grabbing finger is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a rolling bearing test bed;
FIG. 2 is a schematic structural diagram of a detection mechanism and an adjustment mechanism;
FIG. 3 is an internal view of the detection mechanism and adjustment mechanism;
FIG. 4 is a schematic view of the adjustment grip;
FIG. 5 is a schematic view of the structure of the adjusting finger;
FIG. 6 is a schematic structural view of a retainer ring;
1-a first power device, 11-a motor, 12-an adjusting base, 2-a second power device, 3-a coupler, 4-a fixed base, 5-a detection mechanism, 51-a test rotating shaft, 52-a supporting and positioning seat, 53-a pressure application seat, 54-a detection seat, 55-a detection bearing, 56-a lifting block, 57-a hydraulic cylinder, 58-a loading bearing, 59-a supporting bearing, 510-a fixed ring, 511-a locking and breaking groove, 6-an adjusting structure, 61-a speed adjusting rotating shaft, 62-a speed adjusting seat, 63-a speed adjusting and supporting bearing, 64-an adjusting gripper, 65-a rotating plate, 66-an adjusting gripper, 67-a dovetail groove, 68-a transition through groove, 69-a dovetail slide block, 610-a telescopic adjusting rod and 611-a stud, 612-locking screw hole, 613-locking block, 614-locking cover, 615-waist-shaped adjusting hole.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1; a device for simulating rolling bearing slippage comprises a first power device 1, a second power device 2, a coupler 3 and a fixed seat 4, wherein the first power device 1 and the second power device 2 are respectively arranged on two sides of the fixed seat 4, a detection mechanism 5 and an adjusting structure 6 are fixed on the fixed seat 4, the first power device 1 and the second power device 2 are respectively connected with the first power device 1 and the second power device 2 through the coupler 3, the first power device 1 and the second power device 2 respectively comprise an adjusting base 12 and a motor 11 fixed on the adjusting base 12, and a power rod of the motor 11 is connected with the corresponding coupler 3; the adjusting structure 6 comprises a speed regulating rotating shaft 61 and a speed regulating seat 62 fixed on the fixed seat 4, one end of the speed regulating rotating shaft 61 is connected with the coupler 3, the other end of the speed regulating rotating shaft 61 is connected with an adjusting handle 64, a speed regulating supporting bearing 63 is sleeved on the speed regulating rotating shaft 61, and the speed regulating supporting bearing 63 is fixed on the speed regulating seat 62; the detection mechanism 5 comprises a test rotating shaft 51, a supporting and positioning seat 52, a pressure applying seat 53 and a detection seat 54 which are fixed on the fixing seat 4, wherein the test rotating shaft 51 is sleeved with a detection bearing 55, a loading bearing 58 and a supporting bearing 59, the loading bearing 58 is arranged between the detection bearing 55 and the supporting bearing 59, the detection bearing 55 is arranged on the detection seat 54, the supporting bearing 59 is arranged on the supporting and positioning seat 52, a hydraulic cylinder 57 is fixed on the pressure applying seat 53, a lifting block 56 is arranged on a power rod of the hydraulic cylinder 57, the loading bearing 58 is arranged on the lifting block 56, one end of the test rotating shaft 51 is connected with the coupler 3, and the detection bearing 55 on the other end of the test rotating shaft 51 is matched with the adjusting structure 6; a vibration sensor is arranged on the detection seat 54; the adjusting hand grip 64 comprises a rotating plate 65 and at least two adjusting finger grips 66, a dovetail groove 67 for allowing the adjusting finger grips 66 to slide is formed in the rotating plate 65, the adjusting finger grips 66 comprise dovetail sliding blocks 69 and telescopic adjusting rods 610, the dovetail sliding blocks 69 are arranged in the dovetail groove 67, one end of each telescopic adjusting rod 610 is connected to the dovetail sliding block 69, the other end of each telescopic adjusting rod 610 is connected with a stud 611, a plurality of locking screw holes 612 penetrate through the dovetail groove 67, and stop screws for fixing the dovetail sliding blocks 69 are arranged in the locking screw holes 612.
The motors 11 in the first power device 1 and the second power device 2 drive the corresponding couplers 3 to rotate, the two couplers 3 respectively drive the speed regulation rotating shaft 61 and the test rotating shaft 51 to rotate, the test rotating shaft 51 drives the inner ring of the detection bearing 55 to rotate, one end of the test rotating shaft 51 is fixed through the support positioning seat 52 and the support bearing 59, pressure is applied through the hydraulic cylinder 57, the pressure is transmitted to the inner ring of the test rotating shaft 51 through the lifting block 56 and the loading bearing 58, and meanwhile, the outer ring of the test rotating shaft is connected with the detection seat 54 to achieve a fixing effect, so that the change of the working state of the detection bearing 55 under certain pressure is simulated, and vibration generated when the detection bearing 55 works under different pressures is transmitted to detection equipment through the vibration sensor; the rotation of the speed regulation rotating shaft 61 can drive the regulation hand grip 64 to rotate, the stud 611 in the regulation hand grip 64 is connected with the retainer of the detection bearing 55, the connection mode is that a plurality of holes for the stud 611 to pass through are processed on the retainer of the detection bearing 55 in advance, the stud 611 and the retainer are connected together through a nut, so that the retainer and the regulation hand grip 64 synchronously rotate together, the rotation speed of the retainer is controlled through the regulation hand grip 64, the slipping speed of the retainer is artificially controlled, and effective data of the detection bearing 55 is calculated through the slipping data of the retainer at different speeds for comprehensive calculation; in order to facilitate the connection of the adjusting gripper 64 and the holder, the adjusting gripper 66 is convenient to drive the holder to rotate by arranging at least two adjusting gripper fingers 66 on the rotating plate 65, meanwhile, the purpose of changing the relative position between the telescopic adjusting rod 610 and the holder is achieved by the matching of the dovetail slide block 69 and the dovetail groove 67, the stud 611 is convenient to insert into a hole processed on the holder, the position of the dovetail slide block 69 is fixed by a stop screw, and the dovetail slide block 69 is prevented from moving during rotation; the vibration of the retainer under different pressure generated in different slip states can be detected by adjusting the grip 64 to control the slip of the retainer, and the data of the bearing 55 can be detected more accurately.
Example 2
On the basis of embodiment 1, one end of the telescopic adjusting rod 610 penetrates through the dovetail slide block 69, a stop screw for fixing the telescopic adjusting rod 610 is arranged on the dovetail slide block 69, and a transition through groove 68 for the telescopic adjusting rod 610 to pass through is arranged in the dovetail groove 67; the coupling 3 is a plum blossom type flexible coupling; the motor 11 is a stepping motor; the telescopic adjusting rod comprises a locking cover 614 and a locking block 613 arranged in the locking cover 614, wherein one end of the telescopic adjusting rod 610 is provided with an external thread meshed with the locking cover 614, the locking cover 614 is provided with a waist-shaped adjusting hole 615, and one end of a stud 611 passes through the waist-shaped adjusting hole 615 to be connected with the locking block 613; a pressure sensor is arranged between the hydraulic cylinder 57 and the lifting block 56; the lifting block 56 is connected with a slide rail, and the slide rail is fixed on the pressure applying base 53.
The telescopic adjusting rod 610 penetrates through the dovetail sliding block 69 to enable the telescopic adjusting rod 610 to be telescopic, meanwhile, the transition through groove 68 is formed to enable the telescopic length of the telescopic adjusting rod 610 to be prolonged, the studs 611 on the telescopic adjusting rod 610 are conveniently controlled to be inserted into additional holes on the retainer to facilitate installation of the telescopic adjusting rod, the coupler 3 adopts a quincunx flexible coupler to reduce the influence on the acquired data of a vibration sensor caused by the fact that vibration generated by the motor 1 is transmitted to the detection mechanism 5 and the adjusting structure 6, the rotating speed can be accurately controlled by adopting a stepping motor, the locking block 613 is fixed at one end of the telescopic adjusting rod 610 through the locking cover 614, meanwhile, the waist-shaped adjusting hole 615 for the studs 611 to penetrate is arranged on the locking cover 614, the studs 611 move in the waist-shaped adjusting hole 615, the studs 611 are enabled to be better connected with the mounting holes on the retainer, because the holder and the inner ring of the detection bearing 55 are at different rotating speeds in the detection process of the detection bearing 55, the holder suddenly stops and stops due to the phenomena of slipping and slight amount of dead holding, and at the moment, the stud 611 and the phenomenon of fracture and deformation easily occur, and the locking block 613 and the stud 611 are fixed through the locking cover 614 so as to be convenient for replacing and installing the connecting hole for connecting the holder; the pressure exerted by the hydraulic cylinder 57 is determined by a pressure sensor, and the track of the lifting block 56 is ensured by the slide rail.
Example 3
On the basis of embodiment 2, a stepped shaft is arranged at one end of the testing rotating shaft 51 close to the adjusting structure 6; the testing device is characterized by further comprising a fixing ring 510, wherein the fixing ring 510 is sleeved outside the testing rotating shaft 51, a locking broken groove 511 is formed in the fixing ring 510, and a locking pin is arranged in the locking broken groove 511.
The detection bearings 55 with different diameters are installed through the stepped shaft, some large detection bearings 55 are installed through the fixing ring 510, the fixing ring 510 is sleeved on the test rotating shaft 51, the detection bearings 55 are sleeved on the fixing ring 510 to achieve the installation effect, and meanwhile, the locking pins are inserted into the locking broken grooves 511 to achieve the purpose of fixing the detection bearings 55 and the fixing ring 510.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the above-described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent alterations and modifications are intended to be included within the scope of the invention, without departing from the spirit and scope of the invention.
Claims (10)
1. A device for simulating the sliding of a rolling bearing is characterized in that: the device comprises a first power device (1), a second power device (2), a coupler (3) and a fixed seat (4), wherein the first power device (1) and the second power device (2) are respectively arranged on two sides of the fixed seat (4), a detection mechanism (5) and an adjusting structure (6) are fixed on the fixed seat (4), the first power device (1) and the second power device (2) are respectively connected with the first power device (1) and the second power device (2) through the coupler (3), the first power device (1) and the second power device (2) respectively comprise an adjusting base (12) and a motor (11) fixed on the adjusting base (12), and a power rod of the motor (11) is connected with the corresponding coupler (3); adjust structure (6) including speed governing pivot (61) and fix speed governing seat (62) on fixing base (4), speed governing pivot (61) one end is connected with shaft coupling (3), speed governing pivot (61) other end is connected with regulation tongs (64), the cover is equipped with speed governing support bearing (63) on speed governing pivot (61), speed governing support bearing (63) are fixed on speed governing seat (62).
2. A device for simulating rolling bearing slippage as set forth in claim 1, wherein: the detection mechanism (5) comprises a test rotating shaft (51), a supporting and positioning seat (52), a pressure applying seat (53) and a detection seat (54) which are fixed on the fixed seat (4), the test rotating shaft (51) is sleeved with a detection bearing (55), a loading bearing (58) and a supporting bearing (59), the loading bearing (58) is arranged between the detection bearing (55) and the supporting bearing (59), the detection bearing (55) is arranged on the detection seat (54), the supporting bearing (59) is arranged on the supporting and positioning seat (52), a hydraulic cylinder (57) is fixed on the pressure application seat (53), a lifting block (56) is arranged on a power rod of the hydraulic cylinder (57), the loading bearing (58) is arranged on the lifting block (56), one end of the test rotating shaft (51) is connected with the coupler (3), the detection bearing (55) on the other end of the test rotating shaft (51) is matched with the adjusting structure (6); and a vibration sensor is arranged on the detection seat (54).
3. A device for simulating rolling bearing slippage as set forth in claim 2, wherein: adjust tongs (64) including changeing board (65) and two at least regulation and grabbing finger (66), it grabs dovetail (67) that finger (66) slided to offer the confession on commentaries on classics board (65), it grabs finger (66) including forked tail slider (69) and telescopic adjusting pole (610) to adjust, forked tail slider (69) set up in dovetail (67), telescopic adjusting pole (610) one end is connected on forked tail slider (69), telescopic adjusting pole (610) other end is connected with double-screw bolt (611), run through a plurality of locking screw hole (612) in dovetail (67), be provided with the stop screw of fixed forked tail slider (69) in locking screw hole (612).
4. A device for simulating rolling bearing slippage as set forth in claim 3, wherein: dovetail slider (69) is run through to telescopic adjusting pole (610) one end, be provided with the stop screw of fixed telescopic adjusting pole (610) on dovetail slider (69), be provided with in dovetail (67) and supply the transition logical groove (68) that telescopic adjusting pole (610) passed.
5. A device for simulating rolling bearing slippage as set forth in claim 4, wherein: the coupling (3) is a quincunx flexible coupling; the motor (11) is a stepping motor.
6. A device for simulating rolling bearing slippage as set forth in claim 5, wherein: still including locking lid (614) and setting in locking block (613) of locking lid (614), telescopic adjusting lever (610) is served and is provided with the external screw thread that meshes mutually with locking lid (614), be provided with waist type regulation hole (615) on locking lid (614), waist type regulation hole (615) are passed to stud (611) one end and are connected with locking block (613).
7. A device for simulating rolling bearing slippage as claimed in claim 1 or 6, wherein: and a pressure sensor is arranged between the hydraulic cylinder (57) and the lifting block (56).
8. A device for simulating rolling bearing slippage as set forth in claim 7, wherein: the lifting block (56) is connected with a slide rail, and the slide rail is fixed on the pressure application seat (53).
9. A device for simulating rolling bearing slippage as set forth in claim 8, wherein: and a stepped shaft is arranged at one end of the test rotating shaft (51) close to the adjusting structure (6).
10. A device for simulating rolling bearing slippage as claimed in claim 1 or 9, wherein: still including retainer plate (510), the retainer plate (510) cover is established outside test pivot (51), be provided with locking cut-off (511) on retainer plate (510), be provided with the fitting pin in locking cut-off (511).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011121588.8A CN112213102A (en) | 2020-10-20 | 2020-10-20 | Device for simulating rolling bearing slipping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011121588.8A CN112213102A (en) | 2020-10-20 | 2020-10-20 | Device for simulating rolling bearing slipping |
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| Publication Number | Publication Date |
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| CN112213102A true CN112213102A (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011121588.8A Pending CN112213102A (en) | 2020-10-20 | 2020-10-20 | Device for simulating rolling bearing slipping |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031965A (en) * | 2022-03-29 | 2022-09-09 | 南京航空航天大学 | Test bed for simulating bearing slipping in high-speed rotating machinery and design method |
-
2020
- 2020-10-20 CN CN202011121588.8A patent/CN112213102A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115031965A (en) * | 2022-03-29 | 2022-09-09 | 南京航空航天大学 | Test bed for simulating bearing slipping in high-speed rotating machinery and design method |
| CN115031965B (en) * | 2022-03-29 | 2023-05-09 | 南京航空航天大学 | Test bed for simulating bearing slip in high-speed rotating machinery and design method |
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