CN115524106A - Bearing retainer testing device and method - Google Patents
Bearing retainer testing device and method Download PDFInfo
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- CN115524106A CN115524106A CN202211209265.3A CN202211209265A CN115524106A CN 115524106 A CN115524106 A CN 115524106A CN 202211209265 A CN202211209265 A CN 202211209265A CN 115524106 A CN115524106 A CN 115524106A
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- 238000012544 monitoring process Methods 0.000 claims abstract description 17
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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
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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
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Abstract
The invention provides a bearing retainer testing device and a testing method, wherein the testing device comprises a rack, a retainer mounting seat, a rotating mechanism and a loading mechanism, wherein the retainer mounting seat, the rotating mechanism and the loading mechanism are arranged on the rack; the rotating mechanism comprises a turntable and a rotating driving piece, and the turntable is connected with an output shaft of the rotating driving piece through a universal joint; the turntable and the retainer mounting seat are arranged oppositely, and the loading mechanism is used for applying axial load or overturning moment to the turntable. The testing method comprises the steps that sensors are arranged in a contact area between a pocket and a roller, a contact area between a guide block and a raceway and a contact area between end faces of adjacent retainer sections, and various operation working conditions are simulated through a rotating mechanism, a loading mechanism and an impact cylinder, so that the monitoring of the stress state of the retainer under different working conditions is realized. The invention drives the roller and the retainer to move through the turntable in the rotating mechanism, and can simulate the operation condition of the retainer; the loading plate of the loading mechanism applies uniform axial load or overturning moment to the turntable, so that the simulation of complex working conditions can be realized.
Description
Technical Field
The invention relates to the technical field of part testing, in particular to a bearing retainer testing device and a bearing retainer testing method.
Background
The slewing bearing applied to the interior of the heading machine is a large bearing which is low in speed and heavy in load and can simultaneously bear comprehensive loads such as large axial load, radial load, overturning moment and the like. However, the roller generates acting force on the retainer during the operation of the slewing bearing but is limited by the bearing structure, so that the acting force between the roller and the retainer during the operation cannot be monitored, the wear condition of the retainer cannot be effectively analyzed, and reference data cannot be provided for optimization of the structure of the retainer.
In addition, in the working process of the slewing bearing, the slewing bearing can bear the effect of comprehensive loads such as axial load, overturning moment and impact load, the operation working condition is complex, the traditional monitoring mode is only to arrange a strain gauge or a fiber grating sensor on the roller, only the stress state of the surface of the contact area can be monitored, the stress state of the contact area of the roller and the retainer cannot be monitored, and the reference value of the collected monitoring data on the optimization of the structure of the retainer is low.
In view of the above, there is a need for a bearing retainer testing apparatus and a testing method thereof to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide a bearing retainer testing device and a testing method, which aim to solve the problem of monitoring the stress state of a large slewing bearing retainer.
In order to achieve the purpose, the invention provides a bearing retainer testing device which comprises a rack, a retainer mounting seat, a rotating mechanism and a loading mechanism, wherein the retainer mounting seat, the rotating mechanism and the loading mechanism are arranged on the rack; the rotating mechanism comprises a turntable and a rotating driving piece, and the turntable is connected with an output shaft of the rotating driving piece through a universal joint; the turntable and the retainer mounting seat are arranged oppositely, and the loading mechanism is used for applying axial load or overturning moment to the turntable.
Preferably, the loading mechanism comprises a loading plate and a plurality of loading telescopic pieces which are hinged along the circumferential direction of the loading plate; the loading plate is positioned on one side of the turntable, which is far away from the retainer mounting seat, and a plurality of balls used for contacting with the turntable are arranged on the loading plate.
Preferably, the frame comprises a main frame body, and a sliding plate and a lifting mechanism which are arranged on the main frame body; the holder mounting seat is arranged on the sliding plate, and the lifting mechanism is connected with the sliding plate and is used for realizing the lifting of the sliding plate and the holder mounting seat in the main frame body;
the frame still includes the guide arm that sets up on the body frame body, the guide arm and slide sliding connection for guide the slide.
Preferably, the bearing retainer testing device further comprises an impact cylinder arranged on the sliding plate.
Preferably, the retainer mounting seat comprises a seat body and a retainer ring detachably connected with the seat body; the base body is arranged on the sliding plate, and the base body and the retainer ring of the retainer are combined to form a raceway for placing the retainer to be tested.
Preferably, the bearing retainer testing device further comprises a sensor for monitoring the element to be tested; the sensor is one of an acoustic emission sensor, a pressure sensor or a fiber grating sensor.
Preferably, the bearing retainer testing device further comprises a rotating mechanism, and the rotating mechanism is movably connected with the rack and used for overturning the rack.
Preferably, the rotating mechanism comprises a worm wheel, a worm and a rotary driving piece; the worm wheel is connected with the rack, the rotating driving piece drives the worm to rotate, and the rack is turned over through meshing of the worm wheel and the worm.
The invention also provides a bearing retainer testing method, which adopts the bearing retainer testing device and comprises the following steps:
the method comprises the following steps: the to-be-tested retainer comprises a plurality of retainer sections and rollers arranged on pockets of the retainer sections, and guide blocks matched with the roller paths are welded on the to-be-tested retainer; arranging sensors in contact areas of the pockets and the rollers, contact areas of the guide blocks and the roller paths and contact areas of end faces of adjacent retainer segments;
step two: placing a retainer to be tested in a retainer mounting seat, and moving the retainer mounting seat towards the turntable through the action of a lifting mechanism until the roller is contacted with the turntable;
step three: starting the rotary driving piece to drive the turntable to rotate, and starting the loading mechanism and/or the impact cylinder according to different test modes;
step four: monitoring the stress state of each contact area through a sensor, recording data after data acquisition is finished, stopping the test, and driving the rack to rotate for X degrees through a rotating mechanism;
step five: and repeating the third step to the fourth step until the stress state monitoring of the to-be-tested retainer rotating from the horizontal state to the vertical state is completed.
Preferably, in the third step, the test patterns include four types:
and (3) axial load loading test: starting a loading mechanism, applying the same axial load to a loading plate by a plurality of loading telescopic parts, and transmitting the uniform axial load to the turntable and the to-be-tested retainer through the loading plate;
and (3) testing the comprehensive action of the axial force and the overturning moment: starting a loading mechanism, applying different axial loads to a loading plate by a plurality of loading telescopic parts, and transmitting an axial force and an overturning moment to the turntable and the retainer to be tested through the loading plate;
axial load and impact load test: starting the loading mechanism and the impact cylinder; the loading expansion pieces apply the same axial load to the loading plate, the loading plate transmits the uniform axial load to the turntable and the retainer to be tested, and the impact cylinder applies impact load to the retainer to be tested;
and (3) comprehensively testing the axial force, the overturning moment and the impact load: starting a loading mechanism and an impact cylinder; the loading expansion pieces apply different axial loads to the loading plate, and the axial force and the overturning moment are transmitted to the turntable and the retainer to be tested through the loading plate; and applying impact load to the retainer to be tested through the impact cylinder.
The technical scheme of the invention has the following beneficial effects:
(1) In the invention, the turntable in the rotating mechanism drives the rollers and the retainer to move, so that the operation condition of the retainer can be simulated; the loading plate of the loading mechanism applies uniform axial load or overturning moment to the turntable, so that the simulation of complex working conditions can be realized.
(2) According to the invention, the loading plate is provided with the ball contacted with the turntable, so that the rotation of the turntable is not influenced when the loading plate applies axial load or overturning moment to the turntable; the turntable is connected with the rotary driving piece through a universal joint, and the turntable can be inclined when bearing the overturning moment, so that the overturning moment is transmitted to the retainer to be tested.
(3) According to the invention, the plurality of loading telescopic pieces are hinged along the circumferential direction of the loading plate, and uniform axial load or overturning moment is applied to the loading plate by controlling the telescopic amount of the loading telescopic pieces, so that the simulation of complex operating conditions can be completed.
(4) In the invention, the sliding plate and the lifting mechanism are arranged on the rack, so that the relative position between the retainer mounting seat and the turntable can be adjusted, and the contact and separation of the turntable and the roller on the retainer to be tested are realized; the guide arm that sets up on the body frame body of frame can be used to lead the slide at the slide lift in-process, guarantees the motion stability of device.
(5) The retainer mounting seat comprises a seat body and a retainer ring detachably connected with the seat body, and the seat body and the retainer ring are combined to form a raceway for placing a retainer to be tested.
(6) In the invention, the bottom of the sliding plate is uniformly provided with a plurality of impact cylinders for applying impact load to the retainer to be tested on the sliding plate, so that the simulation of complex operation conditions can be realized.
(7) In the invention, the acoustic emission sensor is preferably selected as the sensor, the acoustic emission sensor is arranged in a contact area between the pocket and the periphery of the roller, a contact area between the guide block and the roller path and a contact area between the guide block and the end surface of the adjacent retainer segment, and the acoustic emission sensor measures transient elastic waves generated by rapid release of strain energy caused by deformation or damage of the interior or the surface of a material, namely the acting force of the roller on the retainer segment, the interaction force of the guide block and the roller path and the collision force between the end surfaces of the retainer segments of each segment can be collected in the test process to monitor the motion stress state of the retainer to be tested, the stress state of the contact area can be monitored, the stress monitoring is not only carried out on the surface of the contact surface, so that the collected monitoring data has more reference value for the optimization of the structure of the retainer.
(8) According to the invention, the frame can be turned over through the rotating mechanism, so that the stress state monitoring of the to-be-tested retainer in different inclined states is realized, and the simulation of complex motion working conditions can be realized.
(9) According to the invention, the rack is turned over by meshing the worm gear and the worm, and the rotating position of the rack can be fixed by self-locking the worm gear and the worm.
(10) The testing method comprises four testing modes, each testing mode carries out multiple tests (tests of the rack and the retainer under different inclined states), stress state data acquisition under multiple working conditions is realized, multiple working condition data comparison can be carried out, stress state monitoring of the retainer to be tested is realized, and a basis is provided for structure optimization design of the retainer.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a bearing cage testing device according to an embodiment of the present application;
FIG. 2 is a front view of FIG. 1 in an embodiment of the present application;
FIG. 3 isbase:Sub>A sectional view A-A of FIG. 2 in an embodiment of the present application;
wherein, 1, a frame, 1.1, a main frame body, 1.1.1, a top plate, 1.1.2, a supporting beam, 1.1.3, a bottom plate, 1.2, a sliding plate, 1.3, a lifting mechanism, 1.4, a guide rod, 2, a retainer mounting seat, 2.1, a seat body, 2.2, a retainer retaining ring, 2.3, a roller path, 3, a rotating mechanism, 3.1, a turntable, 3.2 and a rotating driving piece, 4, a loading mechanism, 4.1, a loading plate, 4.2, a loading telescopic piece, 5, an impact cylinder, 6, a sensor, 7, a rotating mechanism, 7.1, a worm wheel, 7.2, a worm, 7.3, a rotating driving piece, 7.4, a rotating support, 8, a to-be-tested retainer, 8.1, a roller, 8.2, a retainer section, 8.3 and a guide block.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example (b):
referring to fig. 1 to 3, the embodiment of the invention provides a bearing retainer testing device and a testing method, which are applied to a stress state simulation test of an operation condition of a slewing bearing retainer inside a heading machine.
A bearing retainer testing device is shown in figures 1 and 2 and comprises a rack 1, a retainer mounting seat 2 arranged on the rack 1, a rotating mechanism 3 and a loading mechanism 4; the rotating mechanism 3 comprises a rotary disc 3.1 and a rotary driving part 3.2, and the rotary disc 3.1 is connected with an output shaft of the rotary driving part 3.2 through a universal joint, so that the rotary disc 3.1 can deflect relative to a rotating axis when receiving overturning moment; the loading mechanism 4 is used for applying axial load or overturning moment to the rotary table 3.1 and is used for simulating the working condition that the rotary support retainer of the heading machine is subjected to the axial load or the overturning moment in the heading process, the rotary table 3.1 and the retainer mounting seat 2 are arranged oppositely, and when the rotary table 3.1 rotates, the loading mechanism can apply load to the roller 8.1 in the retainer 8 to be tested in the retainer mounting seat 2 and drive the roller 8.1 to move. In this embodiment, the rotary drive 3.2 is a servomotor.
Referring to fig. 2, the loading mechanism 4 includes a loading plate 4.1 and a plurality of loading telescopic members 4.2 hinged along the circumferential direction of the loading plate 4.1; the loading plate 4.1 is located on one side, away from the retainer mounting seat 2, of the rotary table 3.1, the loading plate 4.1 and the rotary table 3.1 are arranged concentrically, a through hole for the rotary driving piece 3.2 to pass through is formed in the loading plate 4.1, a plurality of balls used for being in contact with the rotary table 3.1 are arranged on the loading plate 4.1, and axial loads or overturning moments are transmitted to the rotary table 3.1 through the loading plate 4.1.
When an axial load is applied, the stretching amount of each loading telescopic piece 4.2 is consistent, the axis of the loading plate 4.1 is parallel to the axis of the loading telescopic piece 4.2, and the uniform axial load is applied to the turntable 3.1 through the loading plate 4.1.
When the overturning moment is applied, the load difference between the loading expansion pieces 4.2 is calculated, the expansion amount of each loading expansion piece 4.2 is controlled, referring to fig. 3, if the contraction amount of the three loading expansion pieces 4.2 on the left side is smaller than that of the three loading expansion pieces on the right side, the loading plate 4.1 in fig. 2 is in a state of being inclined from top to bottom, the rotary disc 3.1 is connected with the output shaft through a universal joint, and under the action of the loading plate 4.1, the rotary disc 3.1 is also in a state of being inclined from top to bottom, so that the application of the overturning moment is realized, and vice versa, if the loading expansion pieces 4.2 are divided into an upper part and a lower part, the adjustment principle is the same.
The frame 1 comprises a main frame body 1.1, a sliding plate 1.2 and a lifting mechanism 1.3, wherein the sliding plate 1.2 and the lifting mechanism are arranged on the main frame body 1.1; the retainer mounting seat 2 is arranged on the sliding plate 1.2, and the lifting mechanism 1.3 is connected with the sliding plate 1.2 and used for realizing the lifting of the sliding plate 1.2 and the retainer mounting seat 2 in the main frame body 1.1 and realizing the adjustment of the relative position between the retainer 8 to be tested and the turntable 3.1; during testing, the lifting mechanism 1.3 is in a contraction state, so that the retainer 8 to be tested is conveniently arranged in the retainer mounting seat 2, then the lifting mechanism 1.3 pushes the sliding plate 1.2 to enable the retainer mounting seat 2 to ascend until the roller 8.1 in the retainer 8 to be tested is contacted with the turntable 3.1, and the roller 8.1 is conveniently loaded through the turntable 3.1 and driven to move.
The frame 1 further comprises guide rods 1.4 arranged on the main frame body 1.1, and the four guide rods 1.4 are located at four corners of the main frame body 1.1 and are connected with the sliding plate 1.2 in a sliding mode and used for guiding the sliding plate 1.2 in the lifting process of the sliding plate 1.2, so that the motion stability of the device is guaranteed.
The loading telescopic part 4.2 and the lifting mechanism 1.3 can select linear actuating elements in the prior art, and in the embodiment, the loading telescopic part 4.2 and the lifting mechanism 1.3 both adopt hydraulic oil cylinders, so that a large load can be applied or borne conveniently.
The main frame body 1.1 comprises a top plate 1.1.1, a supporting beam 1.1.2 and a bottom plate 1.1.3, wherein the supporting beam 1.1.2 is connected between the top plate 1.1.1 and the bottom plate 1.1.3 and used for forming a stable supporting frame. The rotary driving piece 3.2 is arranged on the top plate 1.1.1, an output shaft of the rotary driving piece 3.2 penetrates through the top plate 1.1.1, the lifting mechanism 1.3 is arranged in the middle of the bottom plate 1.1.3, and two ends of the guide rod 1.4 are respectively connected with the top plate 1.1.1 and the bottom plate 1.1.3.
One end of the loading telescopic piece 4.2, which is far away from the loading plate 4.1, is fixedly arranged on the sliding plate 1.2 or the top plate 1.1.1 and is used for applying acting force to the loading plate 4.1, in the embodiment, one end of the loading telescopic piece 4.2 is hinged to the loading plate 4.1, the other end of the loading telescopic piece is fixedly arranged on the sliding plate 1.2, the diameter of an area formed by the multiple loading telescopic pieces 4.2 in a surrounding mode is larger than that of the rotary table 3.1, and interference between the rotary table 3.1 and the loading telescopic piece 4.2 is avoided.
The retainer mounting seat 2 comprises a seat body 2.1 and a retainer ring 2.2 which is detachably connected with the seat body 2.1; the base body 2.1 is arranged on the sliding plate 1.2, and the base body 2.1 and the retainer ring 2.2 are combined to form a roller path 2.3 for placing a retainer to be tested.
The bearing retainer testing device further comprises an impact cylinder 5 arranged on the sliding plate 1.2 and used for simulating impact load of the slewing bearing of the heading machine during working, and the impact cylinder 5 can select an impact cylinder or an electric impact cylinder and other elements. In this embodiment, a plurality of impact cylinders 5 are uniformly arranged at the bottom of the sliding plate 1.2, and are used for applying impact load to a to-be-tested retainer 8 on the sliding plate 1.2.
The bearing retainer testing device also comprises a sensor 6 for monitoring the stress state of an element to be tested (namely a retainer 8 to be tested); the sensor 6 is one of an acoustic emission sensor, a pressure sensor or a fiber grating sensor. In this embodiment, the sensor 6 is preferably an acoustic emission sensor, and the acoustic emission sensor is installed in a contact area between the pocket and the periphery of the roller 8.1, a contact area between the guide block 8.3 and the raceway 2.3, and a contact area between the end face of the adjacent cage segment 8.2, as shown in fig. 3.
The bearing retainer testing device further comprises a rotating mechanism 7, wherein the rotating mechanism 7 is movably connected with the rack 1 and used for overturning the rack 1 and monitoring the stress state of the retainer 8 to be tested in different inclined states. In this embodiment, when the turntable 3.1 contacts the retainer 8 to be tested, the turntable 3.1 and the sliding plate 1.2 are integrally located in the middle of the main frame body 1.1, so that the center of the testing device falls at the center of the main frame body 1.1, and unbalance loading during overturning is avoided.
In this embodiment, the rotating mechanism 7 includes a worm wheel 7.1, a worm 7.2, a rotary driving member 7.3 and a rotary support 7.4; the worm wheel 7.1 is connected with a main frame body 1.1 of the rack 1, the rotation driving piece 7.3 drives the worm 7.2 to rotate, the rack 1 is turned over through the meshing of the worm wheel 7.1 and the worm 7.2, and the position of the rack 1 can be fixed through the self-locking of the worm wheel 7.1 and the worm 7.2; the main frame body 1.1 is provided with a rotating shaft matched with the rotating support 7.4, and the rotating support 7.4 can be fixedly arranged on the ground or the wall surface to provide overturning support for the whole bearing retainer testing device. In this embodiment, the rotary drive 7.3 is a drive motor.
A bearing retainer testing method adopts the bearing retainer testing device, and comprises the following steps:
the method comprises the following steps: the retainer to be tested 8 comprises a plurality of retainer sections 8.2 and rollers 8.1 arranged on pockets of the retainer sections 8.2, and guide blocks 8.3 matched with the roller paths 2.3 are welded on the inner circumferential surface and the outer circumferential surface of the retainer to be tested 8; arranging a sensor 6 in a contact area around a pocket and a roller 8.1, a contact area between a guide block 8.3 and a roller path 2.3 and a contact area between the end faces of adjacent retainer segments 8.2;
in this embodiment, the sensor 6 is an acoustic emission sensor, and the acoustic emission sensor measures transient elastic waves generated by rapid release of strain energy caused by deformation or damage of the inside or surface of the material, that is, the acting force of the roller 8.1 on the retainer segment 8.2, the interaction force of the guide block 8.3 and the raceway 2.3, and the collision force between the end faces of each retainer segment 8.2 can be collected during the test process to monitor the motion stress state of the retainer 8 to be tested.
Step two: placing a retainer to be tested in the retainer mounting seat 2, and moving the retainer mounting seat 2 towards the turntable 3.1 through the action of the lifting mechanism 1.3 until the roller 8.1 is contacted with the turntable 3.1;
step three: starting a rotary driving piece 3.2 to drive a turntable 3.1 to rotate, applying friction force to a roller 8.1 through the turntable 3.1 to drive the roller 8.1 and a retainer section 8.2 to move, selecting different test modes according to different operation conditions to be simulated, and starting a loading mechanism 4 and/or an impact cylinder 5 according to the different test modes;
specifically, the test patterns include four types:
and (3) axial load loading test: starting the loading mechanism 4, applying the same axial load to the loading plate 4.1 by the loading telescopic parts 4.2, and transmitting the uniform axial load to the turntable 3.1 and the retainer 8 to be tested through the loading plate 4.1;
and (3) testing the comprehensive action of the axial force and the overturning moment: starting the loading mechanism 4, applying different axial loads to the loading plate 4.1 by the loading expansion parts 4.2, and transmitting the axial force and the overturning moment to the turntable 3.1 and the retainer 8 to be tested through the loading plate 4.1;
axial load and impact load test: starting the loading mechanism 4 and the impact cylinder 5; the loading expansion pieces 4.2 apply the same axial load to the loading plate 4.1, the uniform axial load is transmitted to the turntable 3.1 and the retainer 8 to be tested through the loading plate 4.1, and the impact load is applied to the retainer 8 to be tested through the impact cylinder 5;
and (3) comprehensively testing the axial force, the overturning moment and the impact load: starting the loading mechanism 4 and the impact cylinder 5; the loading expansion parts 4.2 apply different axial loads to the loading plate 4.1, and the axial force and the overturning moment are transmitted to the turntable 3.1 and the to-be-tested retainer 8 through the loading plate 4.1; an impact load is applied to the test holder 8 by the impact cylinder 5.
Step four: the stress state of each contact area is monitored through the sensor 6, and the test can be stopped by acquiring the acting force of the roller 8.1 on the retainer segment 8.2, the interaction force of the guide block 8.3 and the raceway 2.3 and the collision force between the end faces of each retainer segment 8.2; after the data are recorded, the rotating mechanism 7 drives the rack 1 to rotate by X degrees; in the initial state, the slide plate 1.2 is in a horizontal state, and X degrees are preferably 5 degrees or 10 degrees, where X =10 in the present embodiment.
Step five: and repeating the third step to the fourth step until the stress state monitoring of the to-be-tested retainer 8 rotating from the horizontal state to the vertical state is completed. And in each test mode, 10 times of tests are carried out, and through the test data, multi-working-condition data comparison can be carried out, so that the stress state of the retainer 8 to be tested is monitored, and a basis is provided for the optimal design of the retainer.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A bearing retainer testing device is characterized by comprising a rack (1), a retainer mounting seat (2) arranged on the rack (1), a rotating mechanism (3) and a loading mechanism (4); the rotating mechanism (3) comprises a rotary disc (3.1) and a rotating driving piece (3.2), and the rotary disc (3.1) is connected with an output shaft of the rotating driving piece (3.2) through a universal joint; the turntable (3.1) and the retainer mounting seat (2) are arranged oppositely, and the loading mechanism (4) is used for applying axial load or overturning moment to the turntable (3.1).
2. A bearing holder testing device according to claim 1, characterized in that the loading mechanism (4) comprises a loading plate (4.1) and a plurality of loading telescopic members (4.2) hinged along the circumferential direction of the loading plate (4.1); the loading plate (4.1) is positioned on one side of the turntable (3.1) far away from the retainer mounting seat (2), and a plurality of balls used for being in contact with the turntable (3.1) are arranged on the loading plate (4.1).
3. A bearing cage testing unit according to claim 2, characterized in that the machine frame (1) comprises a main frame body (1.1) and a slide plate (1.2) and a lifting mechanism (1.3) arranged on the main frame body (1.1); the holder mounting seat (2) is arranged on the sliding plate (1.2), and the lifting mechanism (1.3) is connected with the sliding plate (1.2) and used for realizing the lifting of the sliding plate (1.2) and the holder mounting seat (2) in the main frame body (1.1);
the frame (1) is characterized by further comprising a guide rod (1.4) arranged on the main frame body (1.1), wherein the guide rod (1.4) is connected with the sliding plate (1.2) in a sliding manner and used for guiding the sliding plate (1.2).
4. A bearing cage testing unit according to claim 3, characterized in that it further comprises an impact cylinder (5) arranged on the slide plate (1.2).
5. A bearing cage testing device according to claim 1, characterized in that the cage mounting seat (2) comprises a seat body (2.1) and a cage retainer ring (2.2) detachably connected to the seat body (2.1); the base body (2.1) is arranged on the sliding plate (1.2), and the base body (2.1) and the retainer ring (2.2) are combined to form a roller path (2.3) for placing a retainer to be tested.
6. A bearing holder testing device according to claim 4, characterized by further comprising a sensor (6) for monitoring an element to be tested; the sensor (6) is one of an acoustic emission sensor, a pressure sensor or a fiber grating sensor.
7. A bearing cage testing device according to claim 6, characterized by further comprising a turning mechanism (7), said turning mechanism (7) being movably connected to the machine frame (1) for effecting the turning of the machine frame (1).
8. A bearing cage testing device according to claim 7, characterized in that the turning mechanism (7) comprises a worm wheel (7.1), a worm (7.2) and a turning drive (7.3); the worm wheel (7.1) is connected with the rack (1), the rotating driving piece (7.3) drives the worm (7.2) to rotate, and the rack (1) is overturned by meshing the worm wheel (7.1) and the worm (7.2).
9. A bearing holder testing method using a bearing holder testing device according to any one of claims 7 or 8, comprising the steps of:
the method comprises the following steps: the to-be-tested retainer (8) comprises a multi-section retainer section (8.2) and rollers (8.1) arranged on pockets of the retainer section (8.2), and a guide block (8.3) used for being matched with the roller path (2.3) is welded on the to-be-tested retainer (8); arranging sensors (6) in a contact area of the pocket and the roller (8.1), a contact area of the guide block (8.3) and the roller path (2.3) and a contact area of the end face of the adjacent retainer section (8.2);
step two: placing a retainer (8) to be tested in a retainer mounting seat (2), and moving the retainer mounting seat (2) towards a turntable (3.1) through the action of a lifting mechanism (1.3) until a roller (8.1) is contacted with the turntable (3.1);
step three: starting a rotary driving piece (3.2) to drive a turntable (3.1) to rotate, and starting a loading mechanism (4) and/or an impact cylinder (5) according to different test modes;
step four: monitoring the stress state of each contact area through a sensor (6), recording data after data acquisition is finished, stopping the test, and driving the rack (1) to rotate for X degrees through a rotating mechanism (7);
step five: and repeating the third step to the fourth step until the stress state monitoring of the retainer (8) to be tested rotating from the horizontal state to the vertical state is completed.
10. The bearing cage testing method of claim 9, wherein in step three, the test patterns comprise four types:
and (3) axial load loading test: starting the loading mechanism (4), applying the same axial load to the loading plate (4.1) by the loading telescopic parts (4.2), and transmitting the uniform axial load to the turntable (3.1) and the to-be-tested retainer (8) through the loading plate (4.1);
and (3) testing the comprehensive action of the axial force and the overturning moment: starting a loading mechanism (4), applying different axial loads to a loading plate (4.1) by a plurality of loading telescopic parts (4.2), and transmitting an axial force and an overturning moment to a turntable (3.1) and a to-be-tested retainer (8) through the loading plate (4.1);
axial load and impact load test: starting a loading mechanism (4) and an impact cylinder (5); the loading expansion pieces (4.2) apply the same axial load to the loading plate (4.1), the loading plate (4.1) transmits the uniform axial load to the turntable (3.1) and the retainer (8) to be tested, and the impact cylinder (5) applies impact load to the retainer (8) to be tested;
and (3) comprehensively testing the axial force, the overturning moment and the impact load: starting a loading mechanism (4) and an impact cylinder (5); the loading expansion parts (4.2) apply different axial loads to the loading plate (4.1), and the axial force and the overturning moment are transmitted to the turntable (3.1) and the retainer (8) to be tested through the loading plate (4.1); an impact load is applied to the retainer (8) to be tested through the impact cylinder (5).
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| CN202211209265.3A CN115524106A (en) | 2022-09-30 | 2022-09-30 | Bearing retainer testing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117664550A (en) * | 2023-12-15 | 2024-03-08 | 海兴和美汽车配件有限公司 | Leaf spring fatigue test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117664550A (en) * | 2023-12-15 | 2024-03-08 | 海兴和美汽车配件有限公司 | Leaf spring fatigue test device |
| CN117664550B (en) * | 2023-12-15 | 2024-06-11 | 海兴和美汽车配件有限公司 | Leaf spring fatigue test device |
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