A cantilever bearing test bench

Abstract

The present invention relates to the field of bearing experiment technology, and in particular to a cantilever bearing test bench. It includes a shock-absorbing base and a motor drive device, a transition shaft assembly, an auxiliary support, and a loading device installed on the shock-absorbing base. One end of the transition shaft assembly is connected to the drive shaft of the motor drive device by transmission, and the other end is rotatably assembled with the auxiliary support. The transition shaft assembly has a mounting section for fixing the test bearing set. The loading device includes a static loading mechanism and a dynamic loading mechanism. The static loading mechanism includes a telescopic cylinder and an elastic member, and the elastic member is connected between the telescopic cylinder and the test bearing. The dynamic loading mechanism includes an exciter and an adjustment seat. The exciter is installed between the adjustment seat and the test bearing, and the adjustment seat is used to fix the exciter and adjust the position of the exciter. By adopting the cantilever bearing test bench of the present invention, the detection of sliding bearings under static load conditions and dynamic load conditions is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of bearing experiments, in particular to a cantilever bearing test bench. Background Art

[0002] Since ships face the problem of lateral and longitudinal swaying during navigation, it is easy to cause the leakage of marine bearing lubricating oil, thus affecting the working performance of the motor. In view of the above situation, marine sliding bearings have more stringent manufacturing standards than ordinary bearings, and marine sliding bearings also need to undergo more stringent performance testing before leaving the factory.

[0003] During shipping, the ship sometimes runs relatively smoothly, and the radial force on the sliding bearing can be regarded as the static load force; sometimes it will produce large lateral and longitudinal swings, and the radial force on the sliding bearing is constantly changing, that is, the force applied to the sliding bearing is the dynamic load force. In order to ensure the smooth operation of the ship, the sliding bearing must ensure good performance under both static and dynamic load conditions. In view of this, the sliding bearing needs to be tested under static and dynamic load conditions before leaving the factory. However, there is no equipment specifically used for testing the static and dynamic load conditions of the sliding bearing in the prior art, which causes inconvenience to the detection of the sliding bearing. Summary of the invention

[0004] The purpose of the present invention is to provide a cantilever bearing test bench to solve the technical problem that the prior art lacks detection equipment for detecting static load conditions and dynamic load conditions of marine sliding bearings, which causes inconvenience in factory detection of sliding bearings.

[0005] In order to achieve the above object, the present invention provides a cantilever bearing test bench, which adopts the following technical solution:

[0006] A cantilever bearing test bench includes a shock-absorbing base and a motor drive device, a transition shaft assembly, an auxiliary support, and a loading device installed on the shock-absorbing base. One end of the transition shaft assembly is transmission-connected to the drive shaft of the motor drive device, and the other end is rotationally assembled with the auxiliary support. The transition shaft assembly has a mounting section for fixing a test bearing set. The loading device includes a static loading mechanism and a dynamic loading mechanism. The static loading mechanism includes a telescopic cylinder and an elastic member, and the elastic member is connected between the telescopic cylinder and the test bearing. The dynamic loading mechanism includes an exciter and an adjustment seat. The exciter is transmission-installed between the adjustment seat and the test bearing, and the adjustment seat is used to fix the exciter and adjust the position of the exciter.

[0007] Furthermore, there are two dynamic loading mechanisms, one of which is a vertical dynamic loading mechanism for applying a vertical dynamic load to the test bearing, and the other is a horizontal dynamic loading mechanism for applying a horizontal dynamic load to the test bearing.

[0008] Furthermore, it also includes an elastic limiting mechanism, wherein the elastic limiting mechanism and the horizontal dynamic loading mechanism are respectively arranged on opposite sides of the test bearing, and the elastic limiting mechanism is used to apply a force opposite to the horizontal dynamic load to the test bearing to limit the deviation of the test bearing.

[0009] Furthermore, more than two test bearings are simultaneously sleeved on the installation section, a driving member is installed on the driving end of the telescopic cylinder, and elastic members are connected between the driving member and each test bearing in a one-to-one correspondence.

[0010] Furthermore, the adjustment seat includes an upper support plate, a middle support plate and a lower base, the upper support plate guide sliding assembly is on the middle support plate, the middle support plate guide sliding assembly is on the lower base, a first screw mechanism for driving the upper support plate to move is installed between the upper support plate and the middle support plate, and a second screw mechanism for driving the middle support plate to move is installed between the middle support plate and the lower base.

[0011] Furthermore, the lower base is guide-slidably assembled on the shock-absorbing base, and a third screw mechanism for driving the lower base to move is installed between the lower base and the shock-absorbing base.

[0012] Furthermore, the transition shaft assembly includes a central shaft, a transition sleeve and a transition outer shell which are arranged in sequence from the inside to the outside, the transition outer shell is fixedly connected to the shock absorbing base, the transition sleeve is arranged on the outside of the central shaft and fixed to the transition outer shell, a transition bearing is installed between the central shaft and the transition sleeve, the central shaft is longer than the transition sleeve and the transition outer shell, and the installation section is arranged on the outer circumferential surface of the central shaft extending beyond the transition sleeve and the transition outer shell.

[0013] Furthermore, the auxiliary support includes an auxiliary support shaft and an auxiliary support seat, one end of the auxiliary support shaft is transmission-connected to the central shaft, and the other end is rotatably assembled with the auxiliary support seat, a long hole is provided in the auxiliary support seat for the auxiliary support shaft to be inserted and for the end of the auxiliary support shaft to guide and slide, the auxiliary support seat guide sliding assembly is on the shock-absorbing base, and a fourth screw mechanism for driving the auxiliary support seat to guide and move is installed between the auxiliary support seat and the shock-absorbing base.

[0014] Furthermore, a guide frame is slideably mounted on the transition shell, and a guide hole for the elastic member to pass through is provided on the guide frame.

[0015] Furthermore, tension sensors are installed between the static loading mechanism and the test bearing, and between the dynamic loading mechanism and the test bearing.

[0016] Compared with the prior art, the cantilever bearing test bench of the embodiment of the present invention has the following beneficial effects: by adopting the cantilever bearing test bench of the present invention, when testing the sliding bearing, by fixing the bearing set to be tested on the mounting section, the static loading of the sliding bearing can be realized by the static loading mechanism, and the dynamic loading of the sliding bearing can be realized by the dynamic loading mechanism, which facilitates the testing of the sliding bearing under static load conditions and dynamic load conditions. In addition, the static load and dynamic load joint conditions can be tested by simultaneously activating the static loading mechanism and the dynamic loading mechanism, which enriches the testing means and improves the versatility of equipment testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 2 is a front perspective schematic diagram of the overall structure of a cantilever bearing test bench according to an embodiment of the present invention;

[0018] Figure 2 2. It is a three-dimensional schematic diagram of the overall structure of the cantilever bearing test bench according to an embodiment of the present invention;

[0019] Figure 3 The internal structure of the cantilever bearing test bench according to the embodiment of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 4 The internal structure of the cantilever bearing test bench according to the embodiment of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 5 1 is a schematic side view of the internal structure of a cantilever bearing test bench according to an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the dynamic loading mechanism of the cantilever bearing test bench according to an embodiment of the present invention;

[0023] Figure 7 is a schematic top view of the internal structure of a cantilever bearing test bench according to an embodiment of the present invention;

[0024] Figure 8 is a schematic cross-sectional view of the internal structure of a cantilever bearing test bench according to an embodiment of the present invention;

[0025] Fig. 9 yes Figure 8 A partial enlarged cross-sectional schematic diagram of the middle transition shaft assembly;

[0026] Fig.10 yes Figure 8 A partial enlarged view of point A in the middle.

[0027] In the figure, 1- shock absorbing base, 2- motor drive device, 3- electric spindle seat, 4- coupling cover, 5- transition housing, 6- test bearing housing, 7- telescopic cylinder, 8- test cover, 9- dynamic loading mechanism, 10- elastic limit mechanism, 11- transition shaft assembly, 12- driving member, 13- elastic member, 14- exciter, 15- adjustment seat, 16- auxiliary support, 17- guide frame, 18- tension sensor, 19- waterproof cover, 20- grinding pad, 21- upper support plate, 22- middle support plate, 23- lower base, 24- third screw mechanism, 25- test bearing, 26- center shaft, 27- installation section, 28- support section, 29- transition sleeve, 30- transition bearing, 31- auxiliary support shaft, 32- cylindrical roller bearing. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] like Figures 1 to 10 As shown, a cantilever bearing test bench of a preferred embodiment of the present invention. The cantilever bearing test bench includes a shock-absorbing base 1 and a motor drive device 2, a transition shaft assembly 11, an auxiliary support 16, and a loading device installed on the shock-absorbing base 1. One end of the transition shaft assembly 11 is connected to the drive shaft of the motor drive device 2 by transmission, and the other end is rotatably assembled with the auxiliary support 16. The transition shaft assembly 11 has a mounting section 27 for fixing the test bearing 25. The loading device includes a static loading mechanism and a dynamic loading mechanism 9. The static loading mechanism includes a telescopic cylinder 7 and an elastic member 13. The elastic member 13 is connected between the telescopic cylinder 7 and the test bearing 25. The dynamic loading mechanism 9 includes an exciter 14 and an adjustment seat 15. The exciter 14 is installed between the adjustment seat 15 and the test bearing 25 by transmission. The adjustment seat is used to fix the exciter 14 and adjust the position of the exciter 14.

[0030] Specifically, the shock-absorbing base 1 includes a frame structure and various panels fixed on the outer side of the frame structure, wherein the frame structure is a frame welded from square steel. In this embodiment, the shock-absorbing base 1 includes two rectangular parts, one large and one small, and the two rectangular parts are arranged in parallel. In this embodiment, the motor drive device 2, the transition shaft assembly 11, the auxiliary support 16, and the loading device are all installed on the shock-absorbing base 1. The setting of the shock-absorbing base 1 in this embodiment, on the one hand, realizes the integrated installation of the motor drive device 2, the transition shaft assembly 11, the auxiliary support 16, and the loading device. On the other hand, due to the heavy texture of the shock-absorbing base 1, it can reduce the unnecessary vibration generated by each device during operation, thereby reducing the adverse effects on the experiment.

[0031] In this embodiment, the motor drive device 2 is installed on the top surface of the large rectangular part of the shock-absorbing base 1. The motor drive device 2 is a driving motor. In this embodiment, the transition shaft assembly 11 is connected to the main shaft of the motor drive device 2 by transmission, and the connection method is specifically a coupling connection. In this way, the rotation drive of the transition shaft assembly 11 can be achieved through the rotation of the motor drive device 2. In order to ensure the smooth drive of the motor drive device 2 and facilitate the installation and fixation of the motor drive device 2, in this embodiment, an electric spindle seat 3 is also installed on the shock-absorbing base 1. The electric spindle seat 3 is assembled from two semi-circular arc structures, and the electric spindle is clamped and fixed between the two semi-circular arc structures. In this embodiment, a coupling cover 4 is also provided at the connection position of the motor drive device 2 and the transition shaft assembly 11. The coupling cover 4 is provided on the outside of the coupling, thereby playing a role of isolation and protection.

[0032] In this embodiment, the transition shaft assembly 11 includes a central shaft 26, a transition sleeve 29 and a transition housing 5 which are arranged in sequence from the inside to the outside. In this embodiment, the central shaft 26 is longer than the transition sleeve 29 and the transition housing 5. The central shaft 26 can be divided into a support section 28 and a mounting section 27. The transition sleeve 29 and the transition housing 5 are sleeved on the outer circumference of the support section 28, and the mounting section 27 is used to sleeve and fix the test bearing 25. In this embodiment, the support section 28 faces the motor drive device 2. Figure 8 and Fig. 9As shown, in this embodiment, a through hole for the transition sleeve 29 to pass through is provided in the transition housing 5, and one end of the transition sleeve 29 is connected and fixed to the transition housing 5 through a flange structure. In this embodiment, two groups of transition bearing groups are installed between the support section 28 and the transition sleeve 29, each group includes two transition bearings 30, and the transition bearings 30 are specifically radial thrust ball bearings. In this embodiment, the two transition bearing groups are respectively installed at the two ends of the support section 28. In this embodiment, a bearing spacer is provided between the two transition bearings 30 in the same group, and the bearing spacer includes an inner bearing spacer and an outer bearing spacer that are sleeved together; a middle inner spacer and a middle outer spacer are installed between the two groups of transition bearing groups, wherein the middle inner spacer is sleeved between the support section 28 and the middle outer spacer, and the middle outer spacer is sleeved between the middle inner spacer and the transition sleeve 29. In this embodiment, a front stopper and a rear stopper are also provided at both ends of the support section 28, and the front stopper and the rear stopper clamp the two transition bearing groups, the middle inner spacer, and the middle outer spacer in the middle. In this embodiment, a circular nut and a rear end cover are sequentially installed on the rear side of the rear stopper sleeve, and a front end cover is installed on the front side of the front stopper sleeve. The front end cover and the rear end cover are connected and fixed to the front and rear end surfaces of the transition sleeve 29 through a flange structure. A through hole for the central shaft 26 to pass through is also provided in the front end cover and the rear end cover. In this embodiment, the central shaft 26 is connected to the main shaft of the motor drive device 2. During the experiment, the motor drive device 2 will drive the central shaft 26 to rotate, while the transition sleeve 29 covered on the outside of the central shaft 26 does not rotate. The arrangement of the parts on the outside of the support section 28 mainly plays a supporting role, avoiding the situation where the central shaft 26 has a large overhang.

[0033] In this embodiment, the mounting section 27 of the central shaft 26 is in a cantilevered state, and an auxiliary support 16 is provided at the end of the mounting section 27. The auxiliary support 16 is mainly used to support the end of the central shaft 26. In this embodiment, the auxiliary support 16 includes an auxiliary support shaft 31 and an auxiliary support seat. In this embodiment, one end of the auxiliary support shaft 31 is transmission-connected to the end of the central shaft 26, and the other end is rotationally assembled with the auxiliary support seat. The top of the auxiliary bearing seat is provided with a long hole for the end of the auxiliary support shaft 31 to be inserted. The long hole is a blind hole. A cylindrical roller bearing 32 is provided between the auxiliary support shaft 31 and the hole wall of the long hole. A bearing pressure cover and a bearing end cover are also provided on the auxiliary support shaft 31. The bearing pressure cover and the bearing end cover are located on both sides of the cylindrical roller bearing 32 and clamp the cylindrical roller bearing 32 in the middle. In this embodiment, a through hole for the auxiliary support shaft 31 to pass through is provided on the bearing end cover, and the bearing end cover is fixed at the hole position of the long hole. In this embodiment, relative sliding can occur between the long hole and the auxiliary support shaft 31. In order to facilitate the position adjustment of the auxiliary support seat, a fourth screw mechanism is installed between the auxiliary support seat and the shock-absorbing base 1 in this embodiment. It should be noted that the specific structure and principle of the first, second, third and fourth screw mechanisms in this embodiment are the same. Each screw mechanism includes a screw and a nut member screwed on the screw. The nut member is fixedly installed with the corresponding structure. The movement of the nut member can be achieved by rotating the screw, thereby driving the corresponding structure to move. In this embodiment, a threaded hole is provided at the bottom of the auxiliary support seat, and a screw is installed in the threaded hole. The screw can only rotate, and the movement drive of the auxiliary support seat can be achieved by rotating the screw. The screw of the fourth screw mechanism in this embodiment is arranged parallel to the central axis 26. In this embodiment, the auxiliary support seat can adjust the position according to the size of the experimental bearing by rotating the screw. In addition, the setting of the auxiliary support 16 in this embodiment can also avoid the problem of large radial deformation of the central axis 26 to a certain extent.

[0034] In this embodiment, the loading device includes a static loading mechanism and a dynamic loading mechanism 9, such as Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the static loading mechanism is located directly above the mounting section 27 of the central shaft 26. In this embodiment, two dynamic loading mechanisms 9 are provided, one of which 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 provided directly below the mounting section 27 of the central shaft 26, and the horizontal dynamic loading mechanism is provided on the left side of the mounting section 27 of the central shaft 26.

[0035] Specifically, Figure 3 and Figure 4As shown, in this embodiment, the static loading mechanism includes a telescopic cylinder 7 and an elastic member 13. The telescopic cylinder 7 is specifically a hydraulic telescopic cylinder, and the elastic member 13 is specifically a spring. It should be noted that in this embodiment, the mounting section 27 of the central axis 26 is covered in the test bearing housing 6, and the telescopic cylinder 7 is installed on the top of the test bearing housing 6. In this embodiment, three test bearings 25 are fixed on the mounting section 27. In order to achieve the simultaneous application of static loads to the three test bearings 25, a driving member 12 is installed at the driving end of the telescopic cylinder 7 in this embodiment. 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 end of the three elastic members 13 is connected to the driving member 12 for transmission, and the other end is connected and fixed to the corresponding test bearing 25. In this embodiment, a tension sensor 18 is also arranged between the three elastic members 13 and the driving member 12. The tension sensor 18 can monitor the tension applied to the test bearing 25 in real time.

[0036] In order to make the elastic member 13 have better guiding performance, in this embodiment, a guide frame 17 is also installed on the transition housing 5 for guiding sliding. The guide frame 17 is a rectangular plate. The guide frame 17 is provided with guide holes for three elastic members 13 to pass through. The guiding and limiting effect of the guide holes is used to achieve the guiding and limiting of the elastic members 13. In this embodiment, a pull rod is installed on the transition housing 5 for guiding sliding. The pull rod is connected to one end of the guide frame 17. The guide frame 17 can be moved up and down by pulling the pull rod. When adjusted in place, the pull rod can be fixed to the transition housing 5. The fixing method can be pin fixing.

[0037] In this embodiment, the dynamic loading mechanism 9 includes an exciter 14 and an adjustment seat 15. Since the horizontal dynamic loading mechanism and the vertical dynamic loading mechanism differ only in the direction of applying the dynamic load, the operating principles and structures of the two are the same. The following only takes the horizontal dynamic loading mechanism as an example for detailed description. Figure 6As shown, the adjustment seat 15 of the dynamic loading mechanism 9 includes an upper support plate 21, a middle support plate 22 and a lower base 23. In this embodiment, the upper support plate 21 is guided and slidably assembled on the middle support plate 22, and the middle support plate 22 is guided and slidably assembled on the lower base 23. It should be noted that in this embodiment, the upper support plate 21 and the middle support plate 22 are guided and slidably assembled through a guide groove structure. In order to facilitate the displacement adjustment of the upper support plate 21 and the middle support plate 22, in this embodiment, a first screw mechanism is installed between the upper support plate 21 and the middle support plate 22, and a second screw mechanism is installed between the middle support plate 22 and the lower base 23. Since the driving principles of the first screw mechanism and the second screw mechanism are the same as the principle of the fourth screw mechanism mentioned above, they are also more common in daily life, and their structures in this embodiment are not described in detail. It should be noted that in this embodiment, the driving direction of one of the first screw mechanism and the second screw mechanism is parallel to the central axis 26, and the driving direction of the other is 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 exciter 14 is installed on the upper support plate 21, and the position of the exciter 14 can be adjusted by adjusting the positions of the upper support plate 21 and the middle support plate 22. In order to further facilitate the adjustment of the position of the exciter 14, in this embodiment, the lower base 23 is guided and slidably assembled on the shock-absorbing base 1, and a third screw mechanism 24 is installed between the lower base 23 and the shock-absorbing base 1, and the screw of the third screw mechanism 24 is arranged parallel to the central axis 26. It should be noted that in this embodiment, in order to facilitate the driving of the screw, a driving handwheel is installed at the end of the screw of the first, second, third, and fourth screw mechanisms in this embodiment.

[0038] In this embodiment, the vibrator 14 is installed on the top of the upper support plate 21. Since the vibrator 14 is an existing device, the specific structure of the vibrator 14 is not described in detail in this embodiment. It should be noted that in this embodiment, a layer of grinding pad 20 is also installed between the vibrator 14 of the horizontal dynamic loading mechanism and the upper support plate 21, so that the wear between the vibrator 14 and the upper support plate 21 can be reduced. The vibrator 14 and the test bearing 25 in this embodiment are both connected by a connecting rod and a vibration rod, and the connection method is a threaded connection. In this embodiment, a tension sensor 18 is also installed between the vibrator 14 and the test bearing 25. The setting of the tension sensor 18 facilitates the real-time monitoring of the dynamic load applied to the two dynamic loading mechanisms 9. Since the connecting rod or the vibration rod must pass through the test bearing housing 6 or the shock-absorbing base 1, in order to improve the protection performance, in this embodiment, a waterproof cover 19 is also provided on the connecting rod. The waterproof cover 19 is in the shape of a barrel cover, and the side of the opening of the waterproof cover 19 faces the outside of the center rod and is sealed and connected to the inner wall of the test bearing housing 6.

[0039] During the test, the test bearing 25 will be subjected to a unidirectional dynamic load from the horizontal dynamic loading mechanism in the horizontal direction. In order to avoid the situation where the test bearing 25 is easily deflected and damaged due to a large horizontal dynamic load, an elastic limiting mechanism 10 is also provided on the other side opposite to the horizontal dynamic loading mechanism in this embodiment. In this embodiment, the elastic limiting mechanism 10 includes two parallel connecting springs, and both ends of the two connecting springs are connected to a connecting rod by bolt clamping, one of the connecting rods is connected and fixed to the test bearing 25, and the other is connected and fixed to the test bearing housing 6. In this embodiment, a U-shaped part is also fixed on the pull rod away from the central axis 26, and the U-shaped part blocks the two connecting springs on the inside. In this embodiment, a circular nut is also threadedly assembled on the pull rod away from the central axis 26, and the connection and fixation are achieved by the stop limit of the circular nut and the test bearing housing 6.

[0040] It should be noted that, in this embodiment, when installing the test bearing 25, different specifications of the test bearing 25 can be installed by sleeves on the installation section 27. In order to protect the auxiliary support 16, a test cover 8 is also installed on the outside of the auxiliary support 16 in this embodiment.

[0041] The working process of the present invention is as follows: before the test, the test bearing 25 is first sleeved on the mounting section 27, and during installation, it is installed from the side of the auxiliary support 16. Before installation, the position of the auxiliary support seat needs to be adjusted by the fourth screw mechanism, and then the test bearing 25 is sleeved on the mounting section 27 of the central shaft 26. When the test bearing 25 is large, it is also necessary to sleeve the shaft sleeve on the mounting section 27. Finally, the auxiliary support 16 is installed at the end of the central shaft 26.

[0042] During the test, the static loading of the test bearing 25 in the vertical direction is realized by adjusting the telescopic rod, and then the rotation drive of the central shaft 26 can be realized by starting the motor drive device 2, and then the simulation detection of the static working condition of the test bearing 25 can be realized. When the central shaft 26 rotates, the exciter 14 of the horizontal dynamic loading mechanism and the exciter 14 of the vertical dynamic loading mechanism will vibrate, and the generated vibration will apply dynamic load to the test bearing 25, thereby realizing the simulation detection of the dynamic working condition.

[0043] When multiple test bearings 25 are mounted on the mounting section 27, first, the corresponding elastic member 13 is connected and fixed to the corresponding test bearing 25, and static loading of each test bearing 25 can be achieved at the same time. Then, one of the test bearings 25 is connected to the horizontal dynamic loading mechanism and the vertical dynamic loading mechanism, and dynamic simulation detection of the test bearing 25 can be achieved. After the detection of the test bearing 25 is completed, the horizontal dynamic loading mechanism and the vertical dynamic loading mechanism are connected to the next test bearing 25, and the position of the exciter 14 can be adjusted by the first screw mechanism, the second screw mechanism, and the third screw mechanism 24, so that the dynamic simulation detection of all test bearings 25 is completed in sequence.

[0044] In summary, the embodiment of the present invention provides a cantilever bearing test bench, which adopts the cantilever bearing test bench of the present invention. When testing a sliding bearing, the bearing set to be tested is fixed on the mounting section 27, and then the static loading mechanism can be used to implement static loading of the sliding bearing, and the dynamic loading mechanism can be used to implement dynamic loading of the sliding bearing, which facilitates the testing of the sliding bearing under static and dynamic load conditions. In addition, the static and dynamic load joint conditions can be tested by simultaneously enabling the static loading mechanism and the dynamic loading mechanism 9, which enriches the testing means and improves the versatility of equipment testing. .

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A cantilever bearing test bench, characterized in that: The invention comprises a shock-absorbing base (1), a motor drive device (2) mounted on the shock-absorbing 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 drivingly connected to the drive shaft of the motor drive device (2), and the other end is rotationally assembled with the auxiliary support (16); the transition shaft assembly (11) has a mounting section (27) for 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 member (13), the elastic member (13) being connected between the telescopic cylinder (7) and the test bearing (25); the dynamic loading mechanism (9) comprises an exciter (14) and an adjustment seat (15), the exciter (14) being drivingly mounted between the adjustment seat (15) and the test bearing (25), the adjustment seat (15) being used to fix the exciter (14) and adjust the position of the exciter (14); There are two dynamic loading mechanisms (9), one of which 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); It also includes an elastic limiting mechanism (10), wherein the elastic limiting mechanism (10) and the horizontal dynamic loading mechanism are respectively arranged on opposite sides of the test bearing (25), and the elastic limiting mechanism (10) is used to apply a force opposite to the horizontal dynamic load to the test bearing (25) to limit the deviation of the test bearing (25); More than two test bearings (25) are sleeved on the mounting section, a drive member (12) is mounted on the drive end of the telescopic cylinder (7), and elastic members (13) are connected between the drive member (12) and each test bearing (25) in a one-to-one correspondence.

2. The cantilever bearing test bench according to claim 1, characterized in that: The adjustment seat (15) comprises an upper support plate (21), a middle support plate (22) and a lower base (23); the upper support plate (21) is guide-slidably mounted on the middle support plate (22); the middle support plate (22) is guide-slidably mounted on the lower base (23); a first screw mechanism for driving the upper support plate (21) to move is installed between the upper support plate (21) and the middle support plate (22); and a second screw mechanism for driving the middle support plate (22) to move is installed between the middle support plate (22) and the lower base (23).

3. The cantilever bearing test bench according to claim 2 is characterized in that: The lower base (23) is guided and slidably mounted on the shock-absorbing base (1), and a third screw mechanism (24) for driving the lower base (23) to move is installed between the lower base (23) and the shock-absorbing base (1).

4. The cantilever bearing test bench according to claim 1, characterized in that: The transition shaft assembly (11) comprises a central shaft (26), a transition sleeve (29) and a transition shell (5) which are arranged in sequence from the inside to the outside, the transition shell (5) being fixedly connected to the shock absorbing base (1), the transition sleeve being arranged on the outside of the central shaft (26) and being fixed to the transition shell (5), a transition bearing (30) being installed between the central shaft (26) and the transition sleeve, the central shaft (26) being longer than the transition sleeve and the transition shell (5), and the mounting section (27) being arranged on the outer circumferential surface of the central shaft (26) extending beyond the transition sleeve and the transition shell (5).

5. The cantilever bearing test bench according to claim 4 is characterized in that: The auxiliary support (16) comprises an auxiliary support shaft and an auxiliary support seat, one end of the auxiliary support shaft is transmission-connected to the central shaft (26), and the other end is rotationally assembled with the auxiliary support seat, a long hole is provided in the auxiliary support seat for the auxiliary support shaft to be inserted and for the end of the auxiliary support shaft to guide and slide, the auxiliary support seat is guide-slidably assembled on the shock-absorbing base (1), and a fourth screw mechanism for driving the auxiliary support seat to guide and move is installed between the auxiliary support seat and the shock-absorbing base (1).

6. The cantilever bearing test bench according to claim 4, characterized in that: A guide frame (17) is slideably mounted on the transition housing (5), and a guide hole for the elastic member (13) to pass through is provided on the guide frame (17).

7. The cantilever bearing test bench according to claim 1, characterized in that: A tension sensor (18) is installed between the static loading mechanism and the test bearing (25), and between the dynamic loading mechanism (9) and the test bearing (25).

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