A bearing testing device with dynamic monitoring function

Abstract

The invention discloses a bearing testing device with a dynamic monitoring function, the testing device comprises a chassis, a servo motor, a test pool, a linkage mechanism, a detection mechanism, a mud control mechanism and a chassis, the servo motor, the test pool, the detection mechanism, the mud control mechanism and the chassis are all fixedly connected to the chassis, the output end of the servo motor is transmission-connected to the linkage mechanism, the linkage mechanism, the detection mechanism and the mud control mechanism are all fixedly connected to the test pool, the test pool is provided with a first through hole, a side hole and a mud discharge hole, the first through hole is fixedly connected to the linkage mechanism, the linkage mechanism is threadedly connected to the detection mechanism, the detection mechanism is slidably connected to the side hole, the mud control mechanism is fixedly connected to the mud discharge hole, and the detection mechanism is connected to the chassis through an electrical signal; the invention relates to the technical field of bearing testing, the invention can simultaneously and accurately detect bearings of different thicknesses and different outer diameters, and shortens the time of polarization failure caused by mud penetration in the mud, thereby greatly improving the accuracy and efficiency of bearing mud inspection.

Description

Technical Field

[0001] The invention relates to the technical field of bearing testing, in particular to a bearing testing device with a dynamic monitoring function. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. The sealing performance of a bearing refers to its ability to prevent external contaminants (such as dust, water, mud, etc.) from entering the interior of the bearing during operation, and to prevent internal grease and other substances from leaking to the outside. When the bearing is working, when its sealing performance decreases, external contaminants will directly contact the internal balls of the bearing, causing wear and tear, resulting in polarization failure of the bearing.

[0003] In the existing mud test, the mud contamination of different bearing samples after working in the mud for different time periods is mainly checked visually, and the mud contamination after the bearing seal is checked. This can only determine the degree of contamination of different types of bearings after working in the mud for different time periods, and cannot effectively monitor the time when the bearing is polarized due to contamination. Summary of the invention

[0004] The purpose of the present invention is to provide a bearing testing device with a dynamic monitoring function to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bearing testing device with dynamic monitoring function comprises a base frame, a servo motor, a test pool, a linkage mechanism, a detection mechanism, a mud control mechanism and a chassis, the servo motor, the test pool, the detection mechanism, the mud control mechanism and the chassis are all fixedly connected to the base frame, the output end of the servo motor is transmission-connected to the linkage mechanism, the linkage mechanism, the detection mechanism and the mud control mechanism are all fixedly connected to the test pool, the test pool is provided with a first through hole, a side hole and a mud discharge hole, the first through hole is fixedly connected to the linkage mechanism, the linkage mechanism and the detection mechanism are threadedly connected, the detection mechanism is slidably connected to the side hole, the mud control mechanism is fixedly connected to the mud discharge hole, and the detection mechanism is connected to the chassis through electrical signals.

[0006] The present invention is used to simultaneously perform mud permeability tests on multiple groups of bearings at different times. A mud control mechanism injects mud into a test pool, multiple groups of bearings are assembled on a detection mechanism, a servo motor outputs torque to a linkage mechanism, the linkage mechanism transmits torque through a first through hole and simultaneously drives multiple groups of bearings to rotate in the mud, the detection mechanism detects the time when polarization failure of different groups of bearings in the mud due to mud penetration is caused, an electrical signal is sent to a chassis, the mud control mechanism detects the content of mud in the test pool, and the mud is actively replenished to ensure that no test error is caused by mud evaporation. After the detection is completed, the mud control mechanism drains the mud through the mud discharge hole, and the mud contamination after the bearing seal is visually inspected after different bearing samples have worked in the mud for different times.

[0007] Furthermore, the linkage mechanism includes a coupling, a first flange, a second flange, a first tooth head rod, a housing, a third flange, a second tooth head rod and a threaded seat. The coupling is transmission-connected to the output end of the servo motor and the first tooth head rod. The first flange is fixedly connected to the first through hole. The housing is fixedly connected to the test pool. The housing is provided with a second through hole and a third through hole. The second through hole is fixedly connected to the second flange. The first tooth head rod is rotationally connected to the first flange and the second flange. The first tooth head rod is meshed with the tooth surfaces of the second tooth head rod. The second tooth head rod is rotationally connected to the housing. The second tooth head rod is fixedly connected to the threaded seat. The third flange is fixedly connected to the third through hole. The threaded seat is rotationally connected to the third through hole. The threaded seat is threadedly connected to the detection mechanism.

[0008] The servo motor outputs torque to the coupling, and the torque is transmitted to the first tooth head rod through the balanced vibration of the coupling. The first tooth head rod rotates through the first flange and the second flange, and the torque is transmitted through the engagement of the tooth surfaces of the first tooth head rod and the second tooth head rod, driving the second tooth head rod to rotate in the housing. The second tooth head rod is assembled with a threaded seat and rotates in the third flange. Through the threaded seat threaded assembly detection mechanism, driven by multiple groups of threaded seats, multiple groups of bearings are tested to rotate synchronously in mud.

[0009] Furthermore, the detection mechanism includes a magnetic frame, a side frame, a length measuring motor, a magnetic connecting rod, a polarization mechanism, a clamping mechanism and a spindle mechanism. The magnetic frame is fixedly connected to the test pool, the side frame is fixedly connected to the base frame and the length measuring motor, the output end of the length measuring motor is fixedly connected to the magnetic connecting rod, the length measuring motor is connected to the chassis through an electrical signal, the magnetic connecting rod is slidably connected to the side hole, the polarization mechanism is connected to the magnetic frame and the magnetic connecting rod through magnetic force, the polarization mechanism is fixedly connected to the clamping mechanism and the spindle mechanism, and the spindle mechanism is connected to the threaded seat through threads.

[0010] Before injecting mud into the test pool, single bearings of different groups are assembled on the spindle mechanism, and the outer side of the bearing is fixed by the clamping mechanism. The bearings of the same group are assembled by threaded connection between adjacent spindle mechanisms. One end of multiple assembled spindle mechanisms is assembled on the threaded seat through threads. The polarization mechanism is fixedly assembled with the spindle mechanism. The polarization mechanism is assembled with the magnetic frame and the magnetic connecting rod through magnetic force. The threaded seat transmits torque to drive the spindle mechanism to rotate. The outer ring of the bearing is fixed by the clamping mechanism through the polarization mechanism and the magnetic frame. The inner ring of the bearing rotates driven by the spindle mechanism. The failure polarization generated by the bearing working in the mud is pushed by the polarization mechanism to the magnetic connecting rod. The magnetic connecting rod pushes the output end of the length measuring motor to send an electrical signal to the chassis.

[0011] Furthermore, the polarization mechanism includes a slide frame, a ring frame, a first side column, a magnetic head, a magnetic side column, a connecting frame and a first spring. The first side column and the magnetic side column are fixedly connected to the main shaft mechanism, the first side column and the magnetic side column are slidably connected to the slide frame, the ring frame, the magnetic head and the connecting frame are fixedly connected to the slide frame, the magnetic head and the magnetic frame are connected by magnetic force, the magnetic side column and the magnetic connecting rod are connected by magnetic force, the clamping mechanism is fixedly connected to the ring frame, the clamping mechanism is provided with several groups, and the several groups of clamping mechanisms are evenly distributed along the circumference of the ring frame, and the first spring is fixedly connected to the first side column and the connecting frame.

[0012] In the initial state, the bearing sealing ring is in good condition and the inside is not contaminated by mud. The slide frame is assembled on the magnetic frame through the magnetic head, the inner ring of the bearing is assembled on the spindle mechanism, and the outer ring is clamped by several groups of clamping mechanisms evenly distributed around the circumference. The connecting frame, the first spring, and the first side column limit the center of the bearing in the initial state to coincide with the center of the spindle mechanism. When the inside of the bearing is contaminated by mud, the ball falls off due to wear and contact with the mud, causing the bearing to fail and produce polarization. The polarization of the bearing drives the spindle mechanism to deviate, and the spindle mechanism pushes the magnetic side column to slide along the slide of the slide frame. The magnetic side column pushes the magnetic connecting rod, and the length measuring motor sends an electrical signal.

[0013] Furthermore, the clamping mechanism includes a frame shell, a limiting spring sheet, a clamping plate seat and a second spring. The frame shell is fixedly connected to the ring frame and the limiting spring sheet. There are several groups of limiting spring sheets, and the several groups of limiting spring sheets are linearly evenly distributed along the frame shell. The clamping plate seat is slidably connected to the frame shell. A limiting buckle is provided on the clamping plate seat, and the limiting buckle is in contact with the limiting spring sheet. The second spring is fixedly connected to the frame shell and the clamping plate seat.

[0014] The inner ring of the bearing is assembled on the spindle mechanism, and the outer ring contacts the clamping plate seat. During assembly, the clamping plate seat is pushed to slide along the frame shell so that the limit buckle on the clamping plate seat breaks through the limit spring sheet. Under the action of the second spring restoring the deformation, the clamping plate seat is pressed against the outer ring of the bearing. The clamping mechanism can clamp bearings with different outer diameters.

[0015] Furthermore, the spindle mechanism includes a bottom cylinder, a top column disk, a clamping ring, a polarization cylinder and a compensation mechanism. The bottom cylinder is provided with an internal thread and a convex column. The internal thread is connected to the threaded seat through a thread. The convex column is fixedly connected to the top column disk and the compensation mechanism. The top column disk is provided with an external thread. The external thread is arranged on the side of the top column disk away from the bottom cylinder. The clamping ring is in contact with the bottom cylinder and the polarization cylinder. The polarization cylinder is fixedly connected to the first side column and the magnetic side column. The polarization cylinder is provided with an inner corrugation, which is in contact with the compensation mechanism.

[0016] The inner ring of the bearing is assembled on the polarization cylinder. By replacing the clamping rings with different thicknesses, bearings with different thicknesses can be clamped and assembled. One end of multiple assembled main shaft mechanisms is assembled on the threaded seat through the internal thread on the bottom cylinder, and the top column plate is fixed by the convex column. The adjacent main shaft mechanisms are threadedly assembled between the internal thread and the adjacent external thread. The outer ring is clamped on the clamping plate seat, and the convex column drives the inner ring of the bearing assembled on the polarization cylinder to rotate through the compensation mechanism. When the bearing fails and polarization occurs, the bearing drives the polarization cylinder to generate polarization, compresses the compensation mechanism, and pushes the magnetic connecting rod through the magnetic side column fixed by the polarization cylinder, and the length measuring motor sends an electrical signal.

[0017] Furthermore, the compensation mechanism includes a cam, a door frame, a third spring and a convex arc part. The cam is fixedly connected to the convex column and the door frame. The third spring is fixedly connected to the door frame and the convex arc part. The convex arc part is slidably connected to the door frame, and the convex arc part is in contact with the inner corrugation.

[0018] The convex column drives the cam to rotate, and the convex arc part is driven to rotate through the door frame fixed on the cam. The convex arc part contacts the inner corrugation at one end away from the cam, and the polarization cylinder is driven to rotate through the convex arc part contacting the inner corrugation. When the bearing drives the polarization cylinder to polarize, the polarization cylinder compresses the third spring through the convex arc part, and the kinetic energy is converted into deformation of the third spring to compensate for vibration through the compression of the third spring.

[0019] Furthermore, the mud control mechanism includes a valve pipe, a grouting tank and a liquid level sensor, the valve pipe is fixedly connected to the mud discharge hole, the grouting tank is fixedly connected to the base frame, the liquid level sensor is fixedly connected to the test pool, and the grouting tank is connected to the liquid level sensor through an electrical signal.

[0020] Due to long-term testing, the mud in the test pool will evaporate due to environmental factors, causing the liquid level to drop and unable to immerse the bearing. The liquid level sensor detects the mud level and sends an electrical signal to the slurry replenishment tank. The slurry replenishment tank replenishes the mud into the test pool. After the test is completed, the mud is discharged from the valve pipe through the mud discharge hole.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a detection mechanism, and single bearings of different groups are assembled on the polarization cylinder, and the outer side of the bearing is fixed by a clamping plate seat. The bearings of the same group are assembled by adjacent threaded connections, and one end of multiple assembled bottom cylinders is assembled on the threaded seat by threads. The threaded seat transmits torque to drive the main shaft mechanism to rotate. The outer ring of the bearing is fixed by the clamping plate seat through the polarization mechanism and the magnetic frame. The inner ring of the bearing rotates under the drive of the polarization cylinder. The failure polarization generated by the bearing working in the mud is pushed by the polarization cylinder to drive the magnetic connecting rod, and the magnetic connecting rod drives the output end of the length measuring motor. At the same time, the mud penetration degree of multiple groups of bearings is tested at different times to detect the time when the polarization failure of bearings of different groups in the mud caused by mud penetration is caused. The present invention designs a main shaft mechanism and a compensation mechanism coordinated therewith. In the initial state, the bearing sealing ring The bearing is in good condition, the center of the initial state of the bearing coincides with the center of the main shaft mechanism, the outer ring contacts the clamping plate seat, the second spring recovers to make the clamping plate seat press against the outer ring of the bearing, and bearings of different outer diameters can be clamped. The convex column contacts the inner corrugation through the convex arc part to drive the polarization tube to rotate. When the inside of the bearing is contaminated by mud, the ball falls off due to wear and tear caused by contact with the mud, causing the bearing to fail and produce polarization. The bearing drives the polarization tube to produce polarization, and the magnetic side column pushes the magnetic connecting rod and the length measuring motor. The polarization tube compresses the third spring through the convex arc part, and the kinetic energy is converted into deformation compensation vibration of the third spring through the compression of the third spring. The clamping rings of different thicknesses are replaced and assembled, so that bearings of different thicknesses can be clamped and assembled. The present invention can accurately detect bearings of different thicknesses and different outer diameters at the same time, and the time of polarization failure caused by mud penetration in the mud is greatly improved, which greatly improves the accuracy and efficiency of bearing mud inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the linkage mechanism structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the detection mechanism of the present invention;

[0025] Figure 4 for Figure 3 A local enlarged schematic diagram of area A;

[0026] Figure 5 It is a schematic diagram of the structure of the polarization mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0028] Figure 7 It is a partial cross-sectional view of the spindle mechanism of the present invention;

[0029] Figure 8 It is an isometric schematic diagram of the spindle mechanism of the present invention;

[0030] Fig. 9 for Figure 8 Schematic diagram of a partial enlargement of region B.

[0031] In the figure: 1, chassis; 2, servo motor; 3, test pool; 31, first through hole; 32, side hole; 33, mud discharge hole; 4, linkage mechanism; 41, coupling; 42, first flange; 43, second flange; 44, first tooth head rod; 45, housing; 451, second through hole; 452, third through hole; 46, third flange; 47, second tooth head rod; 48, threaded seat; 5, detection mechanism; 51, magnetic frame; 52, side frame; 53, length measuring motor; 54, magnetic connecting rod; 55, polarization mechanism; 551, slide frame; 552, ring frame; 553, first side column; 554, magnetic head; 555, magnetic side column; 556 , connecting frame; 557, first spring; 56, clamping mechanism; 561, frame shell; 562, limiting spring piece; 563, clamping plate seat; 5631, limiting buckle; 564, second spring; 57, main shaft mechanism; 571, bottom cylinder; 5711, internal thread; 5712, convex column; 572, top column plate; 5721, external thread; 573, clamping ring; 574, polarization cylinder; 5741, internal corrugation; 575, compensation mechanism; 5751, cam; 5752, door frame; 5753, third spring; 5754, convex arc part; 6, mud control mechanism; 61, valve pipe; 62, slurry filling tank; 63, liquid level sensor; 7, chassis. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1 , Figure 2As shown, the present invention provides a technical solution of a bearing testing device with a dynamic monitoring function, including a chassis 1, a servo motor 2, a test pool 3, a linkage mechanism 4, a detection mechanism 5, a mud control mechanism 6 and a chassis 7. The servo motor 2, the test pool 3, the detection mechanism 5, the mud control mechanism 6 and the chassis 7 are all fixedly connected to the chassis 1, the output end of the servo motor 2 is transmission-connected to the linkage mechanism 4, the linkage mechanism 4, the detection mechanism 5 and the mud control mechanism 6 are all fixedly connected to the test pool 3, the test pool 3 is provided with a first through hole 31, a side hole 32 and a mud discharge hole 33, the first through hole 31 is fixedly connected to the linkage mechanism 4, the linkage mechanism 4 is threadedly connected to the detection mechanism 5, the detection mechanism 5 is slidably connected to the side hole 32, the mud control mechanism 6 is fixedly connected to the mud discharge hole 33, and the detection mechanism 5 is connected to the chassis 7 through an electrical signal.

[0034] The present invention is used to simultaneously perform mud permeability tests on multiple groups of bearings at different times. The mud control mechanism 6 injects mud into the test pool 3, and multiple groups of bearings are assembled on the detection mechanism 5. The servo motor 2 outputs torque to the linkage mechanism 4. The linkage mechanism 4 transmits torque through the first through hole 31 and drives the multiple groups of bearings to rotate in the mud at the same time. The detection mechanism 5 detects the time when polarization failure of different groups of bearings in the mud due to mud penetration is caused, and an electrical signal is sent to the chassis 7. The mud control mechanism 6 detects the content of mud in the test pool 3, and actively replenishes mud to ensure that no test error is caused by mud evaporation. After the detection is completed, the mud control mechanism 6 drains the mud through the mud discharge hole 33, and the mud contamination after the bearing seal is visually inspected after different bearing samples have worked in the mud for different times.

[0035] like Figure 2 As shown, the linkage mechanism 4 includes a coupling 41, a first flange 42, a second flange 43, a first tooth head rod 44, a housing 45, a third flange 46, a second tooth head rod 47 and a threaded seat 48. The coupling 41 is transmission-connected to the output end of the servo motor 2 and the first tooth head rod 44. The first flange 42 is fixedly connected to the first through hole 31. The housing 45 is fixedly connected to the test pool 3. The housing 45 is provided with a second through hole 451 and a third through hole 452. The second through hole 451 is fixedly connected to the second flange 43. The first tooth head rod 44 is rotationally connected to the first flange 42 and the second flange 43. The first tooth head rod 44 is meshed with the tooth surfaces of the second tooth head rod 47. The second tooth head rod 47 is rotationally connected to the housing 45. The second tooth head rod 47 is fixedly connected to the threaded seat 48. The third flange 46 is fixedly connected to the third through hole 452. The threaded seat 48 is rotationally connected to the third through hole 452. The threaded seat 48 is threadedly connected to the detection mechanism 5.

[0036] The servo motor 2 outputs torque to the coupling 41, and the torque is transmitted to the first tooth head rod 44 through the balanced vibration of the coupling 41. The first tooth head rod 44 rotates through the first flange 42 and the second flange 43. The torque is transmitted through the meshing of the tooth surfaces of the first tooth head rod 44 and the second tooth head rod 47, driving the second tooth head rod 47 to rotate in the housing 45. The second tooth head rod 47 is assembled with the threaded seat 48 to rotate in the third flange 46, and the detection mechanism 5 is threadedly assembled through the threaded seat 48. Driven by multiple groups of threaded seats 48, multiple groups of bearings are tested to rotate synchronously in the mud.

[0037] like Figure 3 , Figure 4 As shown, the detection mechanism 5 includes a magnetic frame 51, a side frame 52, a length measuring motor 53, a magnetic connecting rod 54, a polarization mechanism 55, a clamping mechanism 56 and a spindle mechanism 57. The magnetic frame 51 is fixedly connected to the test pool 3, the side frame 52 is fixedly connected to the base frame 1 and the length measuring motor 53, the output end of the length measuring motor 53 is fixedly connected to the magnetic connecting rod 54, the length measuring motor 53 is connected to the chassis 7 through an electrical signal, the magnetic connecting rod 54 is slidably connected to the side hole 32, the polarization mechanism 55 is connected to the magnetic frame 51 and the magnetic connecting rod 54 through magnetic force, the polarization mechanism 55 is fixedly connected to the clamping mechanism 56 and the spindle mechanism 57, and the spindle mechanism 57 is connected to the threaded seat 48 through threads.

[0038] Before injecting mud into the test pool 3, single bearings of different groups are assembled on the main shaft mechanism 57, and the outer side of the bearing is fixed by the clamping mechanism 56. The bearings of the same group are assembled by threaded connection between adjacent main shaft mechanisms 57. One end of multiple assembled main shaft mechanisms 57 is assembled on the threaded seat 48 by thread. The polarization mechanism 55 fixedly assembled with the main shaft mechanism 57, the polarization mechanism 55 and the magnetic frame 51 and the magnetic connecting rod 54 are assembled by magnetic force. The threaded seat 48 transmits torque to drive the main shaft mechanism 57 to rotate. The outer ring of the bearing is fixed by the clamping mechanism 56 through the polarization mechanism 55 and the magnetic frame 51, and the inner ring of the bearing rotates driven by the main shaft mechanism 57. The failure polarization generated by the bearing working in the mud is pushed by the polarization mechanism 55 to the magnetic connecting rod 54, and the magnetic connecting rod 54 pushes the output end of the length measuring motor 53 to send an electrical signal to the chassis 7.

[0039] like Figure 4 , Figure 5As shown, the polarization mechanism 55 includes a slide frame 551, a ring frame 552, a first side column 553, a magnetic head 554, a magnetic side column 555, a connecting frame 556 and a first spring 557. The first side column 553 and the magnetic side column 555 are fixedly connected to the main shaft mechanism 57. The first side column 553 and the magnetic side column 555 are slidably connected to the slide frame 551. The ring frame 552, the magnetic head 554 and the connecting frame 556 are fixedly connected to the slide frame 551. The magnetic head 554 is connected to the magnetic frame 51 by magnetic force. The magnetic side column 555 is connected to the magnetic connecting rod 54 by magnetic force. The clamping mechanism 56 is fixedly connected to the ring frame 552. The clamping mechanism 56 is provided with a plurality of groups, and the plurality of groups of clamping mechanisms 56 are evenly distributed along the circumference of the ring frame 552. The first spring 557 is fixedly connected to the first side column 553 and the connecting frame 556.

[0040] In the initial state, the bearing sealing ring is in good condition and the inside is not contaminated by mud. The slide frame 551 is assembled on the magnetic frame 51 through the magnetic head 554. The inner ring of the bearing is assembled on the spindle mechanism 57, and the outer ring is clamped by several groups of clamping mechanisms 56 evenly distributed around the circumference. The connecting frame 556, the first spring 557, and the first side column 553 limit the center of the bearing in the initial state to coincide with the center of the spindle mechanism 57. When the inside of the bearing is contaminated by mud, the ball falls off due to wear and tear due to contact with the mud, causing the bearing to fail and produce polarization. The polarization of the bearing drives the spindle mechanism 57 to deviate, and the spindle mechanism 57 pushes the magnetic side column 555 to slide along the slide of the slide frame 551. The magnetic side column 555 pushes the magnetic connecting rod 54, and the length measuring motor 53 sends an electrical signal.

[0041] like Figure 6 As shown, the clamping mechanism 56 includes a frame shell 561, a limiting spring piece 562, a clamping plate seat 563 and a second spring 564. The frame shell 561 is fixedly connected to the ring frame 552 and the limiting spring piece 562. The limiting spring piece 562 is provided in a plurality of groups, and the plurality of groups of limiting spring pieces 562 are linearly evenly distributed along the frame shell 561. The clamping plate seat 563 is slidably connected to the frame shell 561. A limiting buckle 5631 is provided on the clamping plate seat 563, and the limiting buckle 5631 contacts the limiting spring piece 562. The second spring 564 is fixedly connected to the frame shell 561 and the clamping plate seat 563.

[0042] The inner ring of the bearing is assembled on the spindle mechanism 57, and the outer ring contacts the clamping plate seat 563. During assembly, the clamping plate seat 563 is pushed to slide along the frame shell 561, so that the limit buckle 5631 on the clamping plate seat 563 breaks through the limit spring 562. Under the action of the second spring 564 to restore the deformation, the clamping plate seat 563 presses against the outer ring of the bearing, and the clamping mechanism 56 can clamp bearings with different outer diameters.

[0043] like Figure 7 , Figure 8 , Fig. 9As shown, the spindle mechanism 57 includes a bottom cylinder 571, a top column disk 572, a clamping ring 573, a polarization cylinder 574 and a compensation mechanism 575. The bottom cylinder 571 is provided with an internal thread 5711 and a convex column 5712. The internal thread 5711 is threadedly connected to the threaded seat 48. The convex column 5712 is fixedly connected to the top column disk 572 and the compensation mechanism 575. The top column disk 572 is provided with an external thread 5721. The external thread 5721 is arranged on the side of the top column disk 572 away from the bottom cylinder 571. The clamping ring 573 is in contact with the bottom cylinder 571 and the polarization cylinder 574. The polarization cylinder 574 is fixedly connected to the first side column 553 and the magnetic side column 555. The polarization cylinder 574 is provided with an inner corrugation 5741, and the inner corrugation 5741 is in contact with the compensation mechanism 575.

[0044] The inner ring of the bearing is assembled on the polarization tube 574. By replacing the clamping ring 573 with different thicknesses, bearings with different thicknesses can be clamped and assembled. One end of multiple assembled main shaft mechanisms 57 is assembled on the threaded seat 48 through the internal thread 5711 on the bottom tube 571, and the top column plate 572 is fixed by the boss 5712. The adjacent main shaft mechanisms 57 are threadedly assembled between the internal thread 5711 and the adjacent external thread 5721. The outer ring is clamped on the clamping plate seat 563. The boss 5712 drives the inner ring of the bearing assembled on the polarization tube 574 to rotate through the compensation mechanism 575. When the bearing fails and polarization is generated, the bearing drives the polarization tube 574 to generate polarization, compresses the compensation mechanism 575, and fixes the magnetic side column 555 through the polarization tube 574 to push the magnetic connecting rod 54, and the length measuring motor 53 sends an electrical signal.

[0045] like Figure 7 , Figure 8 , Fig. 9 As shown, the compensation mechanism 575 includes a cam 5751, a door frame 5752, a third spring 5753 and a convex arc member 5754. The cam 5751 is fixedly connected to the convex column 5712 and the door frame 5752. The third spring 5753 is fixedly connected to the door frame 5752 and the convex arc member 5754. The convex arc member 5754 is slidably connected to the door frame 5752, and the convex arc member 5754 is in contact with the inner corrugation 5741.

[0046] The convex column 5712 drives the cam 5751 to rotate, and drives the convex arc part 5754 to rotate through the door frame 5752 fixed on the cam 5751. The convex arc part 5754 contacts the inner corrugation 5741 at one end away from the cam 5751, and drives the polarization tube 574 to rotate through the convex arc part 5754 contacting the inner corrugation 5741. When the bearing drives the polarization tube 574 to polarize, the polarization tube 574 compresses the third spring 5753 through the convex arc part 5754, and converts the kinetic energy into the deformation compensation vibration of the third spring 5753 through the compression of the third spring 5753.

[0047] like Figure 1As shown, the mud control mechanism 6 includes a valve tube 61, a grouting tank 62 and a liquid level sensor 63, the valve tube 61 is fixedly connected to the mud discharge hole 33, the grouting tank 62 is fixedly connected to the base frame 1, the liquid level sensor 63 is fixedly connected to the test pool 3, and the grouting tank 62 and the liquid level sensor 63 are connected through electrical signals.

[0048] Due to long-term testing, the mud in the test pool 3 will evaporate due to environmental factors, causing the liquid level to drop and unable to immerse the bearing. The liquid level sensor 63 detects the mud level and sends an electrical signal to the slurry replenishment tank 62. The slurry replenishment tank 62 replenishes the mud into the test pool 3. After the test is completed, the mud is discharged from the valve pipe 61 through the mud discharge hole 33.

[0049] Working principle of the present invention: The present invention is used for testing the mud permeability of bearings. Mud is injected into the test pool 3, and the servo motor 2 outputs torque to the linkage mechanism 4. The linkage mechanism 4 transmits torque to drive the bearing to rotate, and detects the time when different bearings fail to polarize due to mud penetration in the mud. Different groups of single bearings are assembled on the polarization cylinder 574, and one end of a plurality of assembled spindle mechanisms 57 is assembled on the threaded seat 48 through the internal thread 5711 on the bottom cylinder 571. In the initial state, the bearing sealing ring is in good condition and the interior is not contaminated by mud. The slide frame 551 is assembled on the magnetic frame 51 through the magnetic head 554. The connecting frame 556, the first spring 557, and the first side column 553 limit the center of the bearing in the initial state to coincide with the center of the spindle mechanism 57. By replacing and assembling clamp rings 573 of different thicknesses, bearings of different thicknesses can be clamped and assembled. Adjacent spindle mechanisms 57 are connected by internal threads 5711 and adjacent external threads 572. 1 is threadedly assembled, the outer ring contacts the clamping plate seat 563, and under the action of the second spring 564 restoring the deformation, the clamping plate seat 563 presses against the outer ring of the bearing, and can clamp bearings of different outer diameters. The convex arc piece 5754 contacts the inner corrugation 5741 to drive the polarization tube 574 to rotate. When the inside of the bearing is contaminated by mud, the ball falls off due to wear and tear caused by contact with the mud, causing the bearing to fail and produce polarization. The bearing drives the polarization tube 574 to produce polarization to push the magnetic connecting rod 54, and the length measuring motor 53 sends an electrical signal to the chassis 7. The polarization tube 574 compresses the third spring 5753 through the convex arc piece 5754, and the kinetic energy is converted into the deformation compensation vibration of the third spring 5753 through the compression of the third spring 5753. The mud content in the test pool 3 is detected by the mud control mechanism 6, and the mud is actively supplemented. After the detection is completed, the mud control mechanism 6 discharges the mud through the mud discharge hole 33. The mud contamination of different bearing samples after working in the mud for different working times after the bearing is sealed is visually inspected.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A bearing testing device with dynamic monitoring function, characterized in that: The test device comprises a base frame (1), a servo motor (2), a test pool (3), a linkage mechanism (4), a detection mechanism (5), a mud control mechanism (6) and a chassis (7); the servo motor (2), the test pool (3), the detection mechanism (5), the mud control mechanism (6) and the chassis (7) are all fixedly connected to the base frame (1); the output end of the servo motor (2) is drivingly connected to the linkage mechanism (4); the linkage mechanism (4), the detection mechanism (5) and the mud control mechanism (6) are all fixedly connected to the test pool (3); the test pool (3) is provided with a first through hole (31), a side hole (32) and a mud discharge hole (33); the first through hole (31) is fixedly connected to the linkage mechanism (4); the linkage mechanism (4) and the detection mechanism (5) are threadedly connected; the detection mechanism (5) and the side hole (32) are slidably connected; the mud control mechanism (6) and the mud discharge hole (33) are fixedly connected; and the detection mechanism (5) and the chassis (7) are connected via electrical signals; The linkage mechanism (4) comprises a coupling (41), a first flange (42), a second flange (43), a first tooth head rod (44), a housing (45), a third flange (46), a second tooth head rod (47) and a threaded seat (48); the coupling (41) is drivingly connected to an output end of a servo motor (2) and the first tooth head rod (44); the first flange (42) is fixedly connected to a first through hole (31); the housing (45) is fixedly connected to a test cell (3); a second through hole (451) and a third through hole (452) are provided on the housing (45); the second through hole ( 451) is fixedly connected to the second flange (43), the first tooth head rod (44) is rotatably connected to the first flange (42) and the second flange (43), the first tooth head rod (44) is meshed with the tooth surface of the second tooth head rod (47), the second tooth head rod (47) is rotatably connected to the housing (45), the second tooth head rod (47) is fixedly connected to the threaded seat (48), the third flange (46) is fixedly connected to the third through hole (452), the threaded seat (48) is rotatably connected to the third through hole (452), and the threaded seat (48) is connected to the detection mechanism (5) by threading; The detection mechanism (5) comprises a magnetic frame (51), a side frame (52), a length measuring motor (53), a magnetic connecting rod (54), a polarization mechanism (55), a clamping mechanism (56) and a spindle mechanism (57); the magnetic frame (51) is fixedly connected to the test pool (3); the side frame (52) is fixedly connected to the bottom frame (1) and the length measuring motor (53); the output end of the length measuring motor (53) is fixedly connected to the magnetic connecting rod (54); the length measuring motor (53) is connected to the chassis (7) via an electrical signal; the magnetic connecting rod (54) is slidably connected to the side hole (32); the polarization mechanism (55) is connected to the magnetic frame (51) and the magnetic connecting rod (54) via magnetic force; the polarization mechanism (55) is fixedly connected to the clamping mechanism (56) and the spindle mechanism (57); and the spindle mechanism (57) is connected to the threaded seat (48) via a thread.

2. The bearing testing device with dynamic monitoring function according to claim 1, characterized in that: The polarization mechanism (55) comprises a slide frame (551), a ring frame (552), a first side column (553), a magnetic head (554), a magnetic side column (555), a connecting frame (556) and a first spring (557); the first side column (553) and the magnetic side column (555) are fixedly connected to the main shaft mechanism (57); the first side column (553) and the magnetic side column (555) are slidably connected to the slide frame (551); the ring frame (552), the magnetic head (554), the connecting frame (556) and the first spring (557); The magnetic head (554) and the magnetic frame (51) are connected by magnetic force, the magnetic side column (555) and the magnetic connecting rod (54) are connected by magnetic force, the clamping mechanism (56) and the ring frame (552) are fixedly connected, the clamping mechanism (56) is provided with a plurality of groups, and the plurality of groups of the clamping mechanisms (56) are evenly distributed along the circumference of the ring frame (552), and the first spring (557) and the first side column (553) and the connecting frame (556) are fixedly connected.

3. The bearing testing device with dynamic monitoring function according to claim 2 is characterized in that: The clamping mechanism (56) comprises a frame shell (561), a limiting spring sheet (562), a clamping plate seat (563) and a second spring (564); the frame shell (561) is fixedly connected to the ring frame (552) and the limiting spring sheet (562); a plurality of groups of limiting spring sheets (562) are provided, and the plurality of groups of limiting spring sheets (562) are linearly evenly distributed along the frame shell (561); the clamping plate seat (563) is slidably connected to the frame shell (561); a limiting buckle (5631) is provided on the clamping plate seat (563); the limiting buckle (5631) contacts the limiting spring sheet (562); and the second spring (564) is fixedly connected to the frame shell (561) and the clamping plate seat (563).

4. The bearing testing device with dynamic monitoring function according to claim 2 is characterized in that: The spindle mechanism (57) comprises a bottom cylinder (571), a top column plate (572), a clamping ring (573), a polarization cylinder (574), and a compensation mechanism (575); the bottom cylinder (571) is provided with an internal thread (5711) and a convex column (5712); the internal thread (5711) is threadedly connected to a threaded seat (48); the convex column (5712) is fixedly connected to the top column plate (572) and the compensation mechanism (575); the top column plate (572) An external thread (5721) is provided on the top column plate (572), and the external thread (5721) is provided on a side of the top column plate (572) away from the bottom cylinder (571). The clamping ring (573) is in contact with the bottom cylinder (571) and the polarization cylinder (574). The polarization cylinder (574) is fixedly connected to the first side column (553) and the magnetic side column (555). The polarization cylinder (574) is provided with an inner corrugation (5741), and the inner corrugation (5741) is in contact with the compensation mechanism (575).

5. The bearing testing device with dynamic monitoring function according to claim 4 is characterized in that: The compensation mechanism (575) comprises a cam (5751), a door frame (5752), a third spring (5753) and a convex arc member (5754); the cam (5751) is fixedly connected to the convex column (5712) and the door frame (5752); the third spring (5753) is fixedly connected to the door frame (5752) and the convex arc member (5754); the convex arc member (5754) is slidably connected to the door frame (5752); and the convex arc member (5754) is in contact with the inner corrugation (5741).

6. The bearing testing device with dynamic monitoring function according to claim 1, characterized in that: The mud control mechanism (6) comprises a valve tube (61), a slurry replenishing tank (62) and a liquid level sensor (63); the valve tube (61) is fixedly connected to the mud discharge hole (33); the slurry replenishing tank (62) is fixedly connected to the base frame (1); the liquid level sensor (63) is fixedly connected to the test pool (3); and the slurry replenishing tank (62) and the liquid level sensor (63) are connected via an electrical signal.

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