CN111256992A - Cantilever type bearing test bench - Google Patents
Cantilever type bearing test bench Download PDFInfo
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- CN111256992A CN111256992A CN202010235183.0A CN202010235183A CN111256992A CN 111256992 A CN111256992 A CN 111256992A CN 202010235183 A CN202010235183 A CN 202010235183A CN 111256992 A CN111256992 A CN 111256992A
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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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- 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
- G01M13/045—Acoustic or vibration analysis
Abstract
The invention relates to the technical field of bearing experiments, in particular to a cantilever type bearing test bed. The device comprises a damping base, a motor driving device, a transition shaft assembly, an auxiliary support and a loading device, wherein the motor driving device, the transition shaft assembly, the auxiliary support and the loading device are arranged on the damping base; the transition shaft assembly is provided with an installation section for sleeving and fixing the test bearing; the loading device comprises a static loading mechanism and a dynamic loading mechanism, the static loading mechanism comprises a telescopic cylinder and an elastic piece, and the elastic piece is connected between the telescopic cylinder and the test bearing; the dynamic loading mechanism comprises a vibration exciter and an adjusting seat, the vibration exciter is installed between the adjusting seat and the test bearing in a transmission mode, and the adjusting seat is used for fixing the vibration exciter and adjusting the position of the vibration exciter. By adopting the cantilever type bearing test bed, the detection of the sliding bearing under the static load working condition and the dynamic load working condition is facilitated.
Description
Technical Field
The invention relates to the technical field of bearing experiments, in particular to a cantilever type bearing test bed.
Background
As the ship can face the problem of transverse and longitudinal swinging in the sailing process, the leakage of the lubricating oil of the marine bearing is easily caused, and the working performance of the motor is influenced. In view of the above, the marine sliding bearing has more strict manufacturing standards than the conventional bearing, and the marine sliding bearing needs to be subjected to more strict performance tests before the shipping.
During shipping, the ship can run relatively stably sometimes, and the radial acting force borne by the sliding bearing can be regarded as the acting force under the static load working condition; sometimes, a large transverse and longitudinal swing is generated, and at the moment, the radial acting force of the sliding bearing is changed constantly, namely the acting force exerted on the sliding bearing is the acting force of the dynamic load working condition. In order to guarantee good operation of the ship, the sliding bearing has to guarantee better performance under the static load working condition and the dynamic load working condition, so that the sliding bearing needs to be detected under the static load working condition and the dynamic load working condition before leaving a factory.
Disclosure of Invention
The invention aims to provide a cantilever type bearing test bed, which is used for solving the technical problem that the factory detection of a sliding bearing is inconvenient because detection equipment for detecting the static load working condition and the dynamic load working condition of a marine sliding bearing is lacked in the prior art.
In order to achieve the purpose, the invention provides a cantilever type bearing test bed, which adopts the following technical scheme:
a cantilever type bearing test bed comprises a damping base, a motor driving device, a transition shaft assembly, an auxiliary support and a loading device, wherein the motor driving device, the transition shaft assembly, the auxiliary support and the loading device are arranged on the damping base; the transition shaft assembly is provided with an installation section for sleeving and fixing the test bearing; the loading device comprises a static loading mechanism and a dynamic loading mechanism, the static loading mechanism comprises a telescopic cylinder and an elastic piece, and the elastic piece is connected between the telescopic cylinder and the test bearing; the dynamic loading mechanism comprises a vibration exciter and an adjusting seat, the vibration exciter is installed between the adjusting seat and the test bearing in a transmission mode, and the adjusting seat is used for fixing the vibration exciter and adjusting the position of the vibration exciter.
Furthermore, the number of the dynamic loading mechanisms is two, wherein one of the two dynamic loading mechanisms is a vertical dynamic loading mechanism for applying a dynamic load in a vertical direction to the test bearing, and the other one of the two dynamic loading mechanisms is a horizontal dynamic loading mechanism for applying a dynamic load in a horizontal direction to the test bearing.
Furthermore, the test device also comprises an elastic limiting mechanism, wherein the elastic limiting mechanism and the horizontal dynamic loading mechanism are respectively arranged at two opposite sides of the test bearing, and the elastic limiting mechanism is used for applying an acting force opposite to the horizontal dynamic loading to the test bearing so as to limit the offset of the test bearing.
Furthermore, the installation section is simultaneously sleeved with more than two test bearings, the driving part is installed at the driving end of the telescopic cylinder, and elastic parts are correspondingly connected between the driving part and the test bearings.
Furthermore, the adjusting seat comprises an upper supporting plate, a middle supporting plate and a lower base, the upper supporting plate is assembled on the middle supporting plate in a guiding and sliding mode, the middle supporting plate is assembled on the lower base in a guiding and sliding mode, a first screw mechanism used for driving the upper supporting plate to move is installed between the upper supporting plate and the middle supporting plate, and a second screw mechanism used for driving the middle supporting plate to move is installed between the middle supporting plate and the lower base.
Further, the lower base is assembled on the damping base in a guiding and sliding mode, and a third screw mechanism used for driving the lower base to move is installed between the lower base and the damping base.
Further, the transition axle assembly includes center pin, transition cover and the transition shell that sets gradually from inside to outside, transition shell and vibration damping mount fixed connection, the transition cover is established in the center pin outside and is fixed with the transition shell, install transition bearing between center pin and the transition cover, the center pin will be good at transition cover and transition shell, the installation section sets up on the outer peripheral face of the long-play transition cover of center pin and transition shell.
Further, the auxiliary support comprises an auxiliary support shaft and an auxiliary support seat, one end of the auxiliary support shaft is connected with the central shaft in a transmission mode, the other end of the auxiliary support shaft is assembled with the auxiliary support seat in a rotating mode, a long hole for the auxiliary support shaft to be inserted into and for the end portion of the auxiliary support shaft to guide and slide is formed in the auxiliary support seat, the auxiliary support seat is assembled on the damping base in a guiding mode, and a fourth lead screw mechanism used for driving the auxiliary support seat to guide and move is installed between the auxiliary support seat and the damping base.
Further, a guide frame is assembled on the transition shell in a guiding and sliding mode, and a guide hole for the elastic piece to penetrate through is formed in the guide frame.
Further, tension sensors are arranged between the static loading mechanism and the test bearing and between the dynamic loading mechanism and the test bearing.
Compared with the prior art, the cantilever type bearing test bed provided by the embodiment of the invention has the beneficial effects that: by adopting the cantilever type bearing test bed, when the sliding bearing is detected, the bearing to be detected is sleeved and fixed on the mounting section, then the static loading of the sliding bearing can be realized through the static loading mechanism, and the dynamic loading of the sliding bearing can be realized through the dynamic loading mechanism, so that the detection of the sliding bearing under the static load working condition and the dynamic load working condition is facilitated. In addition, the static loading mechanism and the dynamic loading mechanism can be started simultaneously to detect the static loading and dynamic loading joint working condition, so that the detection means are enriched, and the universality of equipment detection is improved.
Drawings
FIG. 1 is a front perspective view of an overall structure of a cantilever-type bearing test bed according to an embodiment of the present invention;
FIG. 2 is a rear perspective view of the cantilever bearing test bed according to an embodiment of the present invention;
FIG. 3 is a first perspective view of the inner structure of the cantilever-type bearing test bed according to the embodiment of the present invention;
FIG. 4 is a second perspective view of the inner structure of the cantilever-type bearing test bed according to the embodiment of the present invention;
FIG. 5 is a schematic side view of the internal structure of a cantilevered bearing test stand according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a dynamic loading mechanism of the cantilever-type bearing test bed according to an embodiment of the present invention;
FIG. 7 is a schematic top view of the internal structure of a cantilever-type bearing test bed according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of the internal structure of a cantilever-type bearing test bed according to an embodiment of the present invention;
FIG. 9 is an enlarged, fragmentary, cross-sectional schematic view of the transition shaft assembly of FIG. 8;
fig. 10 is a partial enlarged view at a in fig. 8.
In the figure, 1-a damping base, 2-a motor driving device, 3-an electric spindle base, 4-a coupling cover, 5-a transition shell, 6-a test bearing shell, 7-a telescopic cylinder, 8-a test cover, 9-a dynamic loading mechanism, 10-an elastic limiting mechanism, 11-a transition shaft assembly, 12-a driving piece, 13-an elastic piece, 14-a vibration exciter, 15-an adjusting seat, 16-an auxiliary support, 17-a guide frame, 18-a tension sensor, 19-a waterproof cover, 20-a matching grinding pad, 21-an upper supporting plate, 22-a middle supporting plate, 23-a lower base, 24-a third screw rod mechanism, 25-a test bearing, 26-a central shaft, 27-an installation section, 28-a supporting section and 29-a transition sleeve, 30-transition bearing, 31-auxiliary supporting shaft and 32-cylindrical roller bearing.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 10, a cantilever type bearing test stand according to a preferred embodiment of the present invention. The cantilever type bearing test bed comprises a damping base 1, a motor driving device 2, a transition shaft assembly 11, an auxiliary support 16 and a loading device, wherein the motor driving device 2, the transition shaft assembly 11, the auxiliary support 16 and the loading device are arranged on the damping base 1, one end of the transition shaft assembly 11 is in transmission connection with a driving shaft of the motor driving device 2, and the other end of the transition shaft assembly is in rotating assembly with the auxiliary support 16; the transition shaft assembly 11 is provided with a mounting section 27 for sleeving and fixing the test bearing 25; the loading device comprises a static loading mechanism and a dynamic loading mechanism 9, the static loading mechanism comprises a telescopic cylinder 7 and an elastic part 13, and the elastic part 13 is connected between the telescopic cylinder 7 and a test bearing 25; the dynamic loading mechanism 9 comprises an exciter 14 and an adjusting seat 15, the exciter 14 is installed between the adjusting seat 15 and the test bearing 25 in a transmission mode, and the adjusting seat is used for fixing the exciter 14 and adjusting the position of the exciter 14.
Specifically, this vibration damping mount 1 includes frame construction and fixes each panel on the frame construction lateral surface, and wherein frame construction is the frame that the square steel welding formed, and vibration damping mount 1 includes two big one little cuboid parts in this embodiment, and two cuboid parts set up in parallel. In this embodiment, the motor driving device 2, the transition shaft assembly 11, the auxiliary support 16 and the loading device are all installed on the damping base 1. The setting of vibration damping mount 1 in this embodiment has realized on the one hand the installation that integrates motor drive 2, transition shaft assembly 11, auxiliary stay 16, loading device, and on the other hand because vibration damping mount 1's texture is heavier, can reduce the unnecessary vibrations that each device produced in the operation to reduce the harmful effects to the experiment.
In this embodiment, the transition shaft assembly 11 includes a central shaft 26, a transition sleeve 29 and a transition housing 5, which are sequentially arranged from inside to outside, the central shaft 26 in this embodiment is longer than the transition sleeve 29 and the transition housing 5, the central shaft 26 can be divided into a supporting section 28 and an installation section 27, wherein the transition sleeve 29 and the transition housing 5 are sleeved on an outer peripheral side of the supporting section 28, the installation section 27 is used for sleeving and fixing the test bearing 25, and the supporting section 28 in this embodiment faces the side of the motor driving device 2. As shown in fig. 8 and 9, in the present embodiment, a through hole is formed in the transition housing 5 for the transition sleeve 29 to pass through, and one end of the transition sleeve 29 is connected and fixed with the transition housing 5 through a flange structure. In this embodiment, two sets of transition bearing sets are installed between the support section 28 and the transition sleeve 29, each set includes two transition bearings 30, and the transition bearings 30 are radial thrust ball bearings. In this embodiment, two transition bearing sets are mounted at each end of the support section 28. In this embodiment, a bearing spacer is disposed between two transition bearings 30 of the same group, and the bearing spacer includes an inner bearing spacer and an outer bearing spacer sleeved together; a middle inner spacer sleeve and a middle outer spacer sleeve are arranged between the two groups of transition bearing groups, wherein the middle inner spacer sleeve is sleeved between the support section 28 and the middle outer spacer sleeve, and the middle outer spacer sleeve is sleeved between the middle inner spacer sleeve and the transition sleeve 29. In this embodiment, a front retaining sleeve and a rear retaining sleeve are further disposed at two ends of the supporting section 28, and the front retaining sleeve and the rear retaining sleeve clamp the two transition bearing sets, the middle inner spacer sleeve and the middle outer spacer sleeve in the middle. In this embodiment, a circular nut and a rear end cap are sequentially mounted on the rear side of the rear retaining sleeve, a front end cap is mounted on the front side of the front retaining sleeve, the front end cap and the rear end cap are fixedly connected with the front end face and the rear end face of the transition sleeve 29 through flange structures, and through holes for the central shaft 26 to penetrate out are further formed in the front end cap and the rear end cap. In this embodiment, the central shaft 26 is connected with the spindle of the motor driving device 2 in a transmission manner, during the experiment, the motor driving device 2 drives the central shaft 26 to rotate, the transition sleeve 29 covering the outer side of the central shaft 26 does not rotate, and the parts outside the supporting section 28 are mainly arranged to play a supporting role, so that the condition that the overhang amount of the central shaft 26 is large is avoided.
In this embodiment, the mounting section 27 of the central shaft 26 is in a suspended state, the end of the mounting section 27 is provided with the auxiliary support 16, and the auxiliary support 16 is mainly used for supporting the end of the central shaft 26. Auxiliary stay 16 includes auxiliary support shaft 31 and auxiliary support seat in this embodiment, the one end of auxiliary support shaft 31 is connected with the tip transmission of center pin 26 in this embodiment, the other end rotates the assembly with auxiliary support seat, auxiliary support shaft's top is provided with the tip male slot hole that supplies auxiliary support shaft 31, the slot hole is the blind hole, be provided with cylindrical roller bearing 32 between the pore wall of auxiliary support shaft 31 and slot hole, still be provided with bearing cover and bearing end cover on the auxiliary support shaft 31, bearing cover and bearing end cover are located cylindrical roller bearing 32's both sides and with cylindrical roller bearing 32 centre gripping spacing. In this embodiment, the bearing end cap is provided with a through hole for the auxiliary support shaft 31 to pass through, and the bearing end cap is fixed at the position of the opening of the long hole. Relative sliding can take place between slot hole and the auxiliary support axle 31 in this embodiment, and in order to carry out position adjustment to the auxiliary supporting seat, install the fourth screw mechanism between auxiliary supporting seat and vibration damping mount 1 in this embodiment. It should be noted that, in this embodiment, the specific structures and principles of the first, second, third, and fourth screw mechanisms are the same, each screw mechanism includes a screw and a nut member that is spirally assembled on the screw, the nut member is fixedly installed with the corresponding structure, and the nut member can be moved by rotating the screw, so as to drive the corresponding structure to move. The bottom of auxiliary support seat is provided with the screw hole in this embodiment, and the screw hole internal thread is equipped with the lead screw, and rotary motion can only take place for the lead screw, can realize the removal drive to auxiliary support seat through rotating the lead screw. In the present embodiment, the screw of the fourth screw mechanism is arranged parallel to the central shaft 26. The position can be adjusted according to the size of dimensions of experiment bearing to supplementary supporting seat in this embodiment, through rotating the lead screw can, in addition, supplementary support 16's in this embodiment setting up the great problem of the radial deflection of center pin 26 can also be avoided to a certain extent.
The loading device in this embodiment includes a static loading mechanism and a dynamic loading mechanism 9, as shown in fig. 3, 4 and 5, the static loading mechanism is located right above the installation section 27 of the central shaft 26 in this embodiment, and two dynamic loading mechanisms 9 are provided in this embodiment, one of the two dynamic loading mechanisms is a vertical dynamic loading mechanism for applying a vertical dynamic load to the test bearing 25, and the other is a horizontal dynamic loading mechanism for applying a horizontal dynamic load to the test bearing 25. In this embodiment, the vertical dynamic loading mechanism is disposed directly below the mounting section 27 of the central shaft 26, and the horizontal dynamic loading mechanism is disposed on the left side of the mounting section 27 of the central shaft 26.
Specifically, as shown in fig. 3 and 4, the static loading mechanism in this embodiment includes a telescopic cylinder 7 and an elastic member 13, the telescopic cylinder 7 is specifically a hydraulic telescopic cylinder, the elastic member 13 is specifically a spring, it should be noted that in this embodiment, the mounting section 27 of the central shaft 26 is covered in the test bearing housing 6, and the telescopic cylinder 7 is mounted on the top of the test bearing housing 6. In this embodiment, three test bearings 25 are fixedly sleeved on the mounting section 27, in order to simultaneously apply static load to the three test bearings 25, in this embodiment, a driving member 12 is mounted at the driving end of the telescopic cylinder 7, the driving member 12 is a rectangular rod, in this embodiment, three elastic members 13 are connected below the driving member 12, the three elastic members 13 are arranged in parallel, one ends of the three elastic members 13 are both in transmission connection with the driving member 12, and the other ends of the three elastic members are respectively connected and fixed with the corresponding test bearings 25. In this embodiment, a tension sensor 18 is further disposed between each of the three elastic members 13 and the driving member 12, and the tension sensor 18 can monitor the magnitude of the tension applied to the test bearing 25 in real time.
In order to make the elastic member 13 have better guidance, in this embodiment, a guide frame 17 is further slidably mounted on the transition housing 5, the guide frame 17 is a rectangular plate, guide holes for the three elastic members 13 to pass through are formed in the guide frame 17, and the guide and the limit of the elastic members 13 are realized through the limit function of the guide holes. In this embodiment, a pull rod is assembled on the transition shell 5 in a guiding and sliding manner, the pull rod is connected with one end of the guide frame 17, the guide frame 17 can be moved up and down by pulling the pull rod, and after the adjustment is in place, the pull rod and the transition shell 5 are fixed, and the fixing mode can be a pin shaft fixing mode.
In the present embodiment, the dynamic loading mechanism 9 includes the exciter 14 and the adjustment seat 15, since the horizontal dynamic loading mechanism and the vertical dynamic loading mechanism are only different in the direction of applying the dynamic load, the operation principle and structure of the two mechanisms are the same, and the following only takes the horizontal dynamic loading mechanism as an example for detailed description. As shown in fig. 6, the adjusting seat 15 of the dynamic loading mechanism 9 includes an upper supporting plate 21, a middle supporting plate 22 and a lower base 23, in this embodiment, the upper supporting plate 21 is slidably assembled on the middle supporting plate 22, and the middle supporting plate 22 is slidably assembled on the lower base 23. In order to adjust the displacement of the upper supporting plate 21 and the middle supporting plate 22, in this embodiment, a first screw mechanism is installed between the upper supporting plate 21 and the middle supporting plate 22, and a second screw mechanism is installed between the middle supporting plate 22 and the lower base 23. In this embodiment, one of the first screw mechanism and the second screw mechanism is driven in a direction parallel to the central axis 26, and the other is driven in a direction perpendicular to the central axis 26, specifically, in this embodiment, the screw of the first screw mechanism is perpendicular to the central axis 26, and the screw of the second screw mechanism is parallel to the central axis 26. In this embodiment, the vibration exciter 14 is mounted on the upper supporting plate 21, and the position of the vibration exciter 14 can be adjusted by adjusting the positions of the upper supporting plate 21 and the middle supporting plate 22. In order to further facilitate the adjustment of the position of the vibration exciter 14, in the present embodiment, the lower base 23 is slidably assembled on the vibration damping base 1, and a third screw mechanism 24 is installed between the lower base 23 and the vibration damping base 1, and a screw of the third screw mechanism 24 is arranged in parallel with the central shaft 26. In the present embodiment, in order to facilitate driving of the lead screws, driving handwheels are mounted on the end portions of the lead screws of the first, second, third and fourth lead screw mechanisms in the present embodiment.
The exciter 14 is mounted on the top of the upper supporting plate 21 in this embodiment, and since the exciter 14 is an existing device, the detailed structure of the exciter 14 in this embodiment is not described in detail. It should be noted that in this embodiment, a layer of wear pad 20 is further installed between the exciter 14 and the upper supporting plate 21 of the horizontal dynamic loading mechanism, so as to reduce the wear between the exciter 14 and the upper supporting plate 21. The vibration exciter 14 and the test bearing 25 in the embodiment are in transmission connection through a connecting rod and a vibration exciting rod, and the connection mode is threaded connection. In this embodiment, a tension sensor 18 is further installed between the exciter 14 and the test bearing 25. The tension sensor 18 is arranged to facilitate real-time monitoring of the dynamic loads applied by the two dynamic loading mechanisms 9. Because the connecting rod or the exciting rod needs to penetrate through the test bearing shell 6 or the damping base 1, in order to improve the protection performance, a waterproof cover 19 is further arranged on the connecting rod in the embodiment, the waterproof cover 19 is in a barrel cover shape, and one side of an opening of the waterproof cover 19 faces the outer side of the central rod and is connected with the inner wall of the test bearing shell 6 in a sealing mode.
In the test process, the test bearing 25 is subjected to unidirectional dynamic load of the horizontal dynamic loading mechanism in the horizontal direction, and in order to avoid the situation that the test bearing 25 is easy to deviate greatly and damage due to large horizontal dynamic load, the elastic limiting mechanism 10 is further arranged on the other side opposite to the horizontal dynamic loading mechanism in the embodiment. In this embodiment, the elastic limiting mechanism 10 includes two connecting elastic pieces arranged in parallel, two ends of the two connecting elastic pieces are connected with a connecting rod through bolt clamping, one of the connecting rods is fixedly connected with the test bearing 25, and the other connecting rod is fixedly connected with the test bearing housing 6. In this embodiment, a U-shaped member is further fixed to the pull rod away from the central shaft 26, and the U-shaped member keeps the two connecting resilient pieces inside. In this embodiment, a round nut is further screwed on the pull rod far from the central shaft 26, and the round nut and the test bearing housing 6 are connected and fixed in a stop limiting manner.
In the present embodiment, when the test bearings 25 are mounted, the test bearings 25 of different specifications may be mounted by fitting a bushing to the mounting section 27. In order to protect the auxiliary support 16, a test cover 8 is further mounted on the outer side of the auxiliary support 16 in the present embodiment.
The working process of the invention is as follows: before a test, firstly, the test bearing 25 is sleeved on the mounting section 27, and is mounted from one side of the auxiliary support 16 during mounting, before mounting, the position of the auxiliary support seat needs to be adjusted through the fourth screw mechanism, then, the test bearing 25 is sleeved on the mounting section 27 of the central shaft 26, and when the test bearing 25 is large, a shaft sleeve needs to be sleeved on the mounting section 27 firstly. And finally, the auxiliary support 16 is mounted on the end of the central shaft 26.
During the experiment, realize the static loading to the vertical direction of test bearing 25 through adjusting the telescopic link, then start motor drive 2 can realize the rotation drive of center pin 26, can realize the simulation of the static operating mode of test bearing 25 this moment and detect. When the central shaft 26 rotates, the vibration exciter 14 of the horizontal dynamic loading mechanism and the vibration exciter 14 of the vertical dynamic loading mechanism vibrate, and the generated vibration applies dynamic load to the test bearing 25, so that the simulation detection of dynamic working conditions is realized.
When the plurality of test bearings 25 are sleeved on the mounting section 27, the corresponding elastic part 13 is fixedly connected with the corresponding test bearing 25, at this time, static loading on each test bearing 25 can be simultaneously realized, then, one of the test bearings 25 is connected with the horizontal dynamic loading mechanism and the vertical dynamic loading mechanism, at this time, dynamic simulation detection of the test bearing 25 can be realized, after the test bearing 25 is detected, the horizontal dynamic loading mechanism and the vertical dynamic loading mechanism are connected with the next test bearing 25, and the positions of the vibration exciters 14 can be adjusted through the first screw mechanism, the second screw mechanism and the third screw mechanism 24, so that dynamic simulation detection of all the test bearings 25 is sequentially completed.
To sum up, the embodiment of the present invention provides a cantilever type bearing test bed, which is adopted to fix a bearing to be detected on the mounting section 27 in a sleeved manner when detecting a sliding bearing, and then realize static loading of the sliding bearing through a static loading mechanism, and realize dynamic loading of the sliding bearing through a dynamic loading mechanism, thereby facilitating detection of the sliding bearing under static load working condition and dynamic load working condition. In addition, the static loading mechanism and the dynamic loading mechanism 9 can be started simultaneously to detect the static loading and dynamic loading joint working condition, so that the detection means are enriched, and the universality of equipment detection is improved. .
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a cantilever type bearing test bench which characterized in that: the shock absorption device comprises a shock absorption base (1), a motor driving device (2) arranged on the shock absorption base (1), a transition shaft assembly (11), an auxiliary support (16) and a loading device, wherein one end of the transition shaft assembly (11) is in transmission connection with a driving shaft of the motor driving device (2), and the other end of the transition shaft assembly is rotatably assembled with the auxiliary support (16); the transition shaft assembly (11) is provided with a mounting section (27) for sleeving and fixing a test bearing (25); the loading device comprises a static loading mechanism and a dynamic loading mechanism (9), the static loading mechanism comprises a telescopic cylinder (7) and an elastic piece (13), and the elastic piece (13) is connected between the telescopic cylinder (7) and a test bearing (25); the dynamic loading mechanism (9) comprises a vibration exciter (14) and an adjusting seat (15), the vibration exciter (14) is installed between the adjusting seat (15) and the test bearing (25) in a transmission mode, and the adjusting seat is used for fixing the vibration exciter (14) and adjusting the position of the vibration exciter (14).
2. The cantilevered bearing test stand of claim 1, wherein: the dynamic loading mechanism (9) is provided with two dynamic loading mechanisms, wherein one of the two dynamic loading mechanisms (9) is a vertical dynamic loading mechanism for applying a dynamic load in the vertical direction to the test bearing (25), and the other dynamic loading mechanism is a horizontal dynamic loading mechanism for applying a dynamic load in the horizontal direction to the test bearing (25).
3. The cantilevered bearing test stand of claim 2, wherein: the test device is characterized by further comprising an elastic limiting mechanism (10), wherein the elastic limiting mechanism (10) and the horizontal dynamic loading mechanism are respectively arranged on two opposite sides of the test bearing (25), and the elastic limiting mechanism (10) is used for applying acting force opposite to the horizontal direction dynamic load to the test bearing (25) so as to limit the deviation of the test bearing (25).
4. The cantilevered bearing test stand of claim 1, wherein: the test device is characterized in that more than two test bearings (25) are simultaneously sleeved on the mounting section, a driving piece (12) is installed at the driving end of the telescopic cylinder (7), and elastic pieces (13) are uniformly and correspondingly connected between the driving piece (12) and each test bearing (25).
5. The cantilevered bearing test stand of claim 1, wherein: the adjusting seat (15) comprises an upper supporting plate (21), a middle supporting plate (22) and a lower base (23), the upper supporting plate (21) is assembled on the middle supporting plate (22) in a guiding and sliding mode, the middle supporting plate (22) is assembled on the lower base (23) in a guiding and sliding mode, a first screw rod mechanism used for driving the upper supporting plate (21) to move is installed between the upper supporting plate (21) and the middle supporting plate (22), and a second screw rod mechanism used for driving the middle supporting plate (22) to move is installed between the middle supporting plate (22) and the lower base (23).
6. The cantilevered bearing test stand of claim 5, wherein: the lower base (23) is assembled on the damping base (1) in a guiding and sliding mode, and a third screw rod mechanism (24) used for driving the lower base (23) to move is installed between the lower base (23) and the damping base (1).
7. The cantilevered bearing test stand of claim 1, wherein: transition axle assembly (11) are including center pin (26), transition cover (29) and transition shell (5) that set gradually from inside to outside, transition shell (5) and vibration damping mount (1) fixed connection, the transition cover is established in center pin (26) outside and is fixed with transition shell (5), install transition bearing (30) between center pin (26) and the transition cover, transition cover and transition shell (5) will be good at in center pin (26), installation section (27) set up on the outer peripheral face of center pin (26) long-out transition cover and transition shell (5).
8. The cantilevered bearing test stand of claim 7, wherein: auxiliary stay (16) are including auxiliary stay axle and auxiliary supporting seat, the one end of auxiliary stay axle with center pin (26) transmission is connected, the other end rotates the assembly with auxiliary supporting seat, be provided with in the auxiliary supporting seat and supply the auxiliary stay axle to insert and supply the tip direction gliding slot hole of auxiliary stay axle, the assembly is slided on vibration damping mount (1) in the auxiliary supporting seat direction, install the fourth screw mechanism that is used for driving auxiliary supporting seat direction and removes between auxiliary supporting seat and vibration damping mount (1).
9. The cantilevered bearing test stand of claim 7, wherein: the transition shell (5) is provided with a guide frame (17) in a guiding and sliding mode, and a guide hole for the elastic piece (13) to penetrate through is formed in the guide frame (17).
10. The cantilevered bearing test stand of claim 1, wherein: and tension sensors (18) are respectively arranged between the static loading mechanism and the test bearing (25) and between the dynamic loading mechanism (9) and the test bearing (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235183.0A CN111256992A (en) | 2020-03-27 | 2020-03-27 | Cantilever type bearing test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235183.0A CN111256992A (en) | 2020-03-27 | 2020-03-27 | Cantilever type bearing test bench |
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| CN111256992A true CN111256992A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010235183.0A Pending CN111256992A (en) | 2020-03-27 | 2020-03-27 | Cantilever type bearing test bench |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577741A (en) * | 2020-12-28 | 2021-03-30 | 中国航发哈尔滨轴承有限公司 | Cantilever bearing tester |
-
2020
- 2020-03-27 CN CN202010235183.0A patent/CN111256992A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112577741A (en) * | 2020-12-28 | 2021-03-30 | 中国航发哈尔滨轴承有限公司 | Cantilever bearing tester |
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