CN215338896U

CN215338896U - Bearing life test device

Info

Publication number: CN215338896U
Application number: CN202121642298.8U
Authority: CN
Inventors: 冯星
Original assignee: Changzhou Rongtianle Dongfang Bearing Co ltd
Current assignee: Changzhou Rongtianle Dongfang Bearing Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-12-28
Anticipated expiration: 2031-07-20

Abstract

The utility model relates to a bearing life test device relates to bearing test equipment field, and it includes engine body shell and the actuating mechanism of setting outside engine body shell, be formed with experimental storehouse in the engine body shell, be provided with first fixed block and second fixed block in the experimental storehouse, first fixed block is provided with two and the symmetry sets up the both sides at the second fixed block, install bearing in the first fixed block, this kind of test device is still including experimental pivot, install respectively at the both ends of experimental pivot in bearing, the middle section installation of experimental pivot remains experimental bearing, the outer lane fixed mounting of waiting experimental bearing is in the second fixed block, the one end of experimental pivot is passed experimental storehouse inner wall and is connected with actuating mechanism's power take off end. This application has the effect that reduces experimental pivot and rock the range.

Description

Bearing life test device

Technical Field

The application relates to the field of bearing test equipment, in particular to a bearing service life test device.

Background

With the continuous and deep research on bearings, fatigue life and reliability thereof are the most important performance indexes of bearings, and have attracted extensive attention of various bearing production units and related users. When the bearing service life test is carried out, whether the bearing meets the service life requirement or not can be judged if the bearing needs to reliably run at the required speed in a specific working environment for the required time.

In the related art, a bearing to be tested is generally fixedly mounted in a fixed block, a test rotating shaft is mounted on an inner ring of the bearing, and the test rotating shaft is rotated by a motor, so that a bearing service life test is performed.

According to the related technology, when the test rotating shaft rotates at a high speed, the shaking amplitude of the test rotating shaft is increased along with the continuous increase of the rotating speed of the test rotating shaft, and if the upper limit of the rotating speed which can be reached by the test rotating shaft is lower than the required rotating speed of the bearing life test, the bearing test is difficult to normally carry out.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the self shaking amplitude is too large easily along with the increase of the rotating speed of the test rotating shaft in the bearing test process, the application provides a bearing service life test device.

The application provides a bearing life test device adopts following technical scheme:

the utility model provides a bearing life test device, includes engine body shell and the actuating mechanism of setting outside engine body shell, be formed with experimental storehouse in the engine body shell, be provided with first fixed block and second fixed block in the experimental storehouse, first fixed block is provided with two and the symmetry sets up the both sides at the second fixed block, install bearing in the first fixed block, this kind of test device is still including experimental pivot, install respectively in bearing at the both ends of experimental pivot, the middle section installation of experimental pivot remains experimental bearing, treat that experimental bearing's outer lane fixed mounting is in the second fixed block, the one end of experimental pivot is passed experimental storehouse inner wall and is connected with actuating mechanism's power take off end.

Through adopting above-mentioned technical scheme, the second fixed block is used for realizing waiting the installation of experimental bearing, first fixed block sets up the both sides at experimental pivot respectively, and all be provided with the bearing that is used for the fixed test pivot in the first fixed block, when experimental pivot rotates, bearing can make experimental pivot realize high-speed the rotation, and effectively reduce the produced rocking of experimental pivot both ends at the rotation in-process, thereby effectively improve the upper limit of speed that waiting to test the bearing can reach in this kind of testing arrangement, and effectively improved the stability in the bearing test process, make this kind of testing arrangement can be applicable to the experimental scene of multiple difference.

Preferably, the test rotating shaft comprises a main shaft body and a matching pipe, the matching pipe is detachably connected with the main shaft body, a first mounting hole is formed in the middle of the main shaft body, a second mounting hole is formed in the matching pipe, the matching pipe is fixedly connected with the main shaft body through a screw, and the inner ring of the bearing to be tested is attached to the outer surface of the matching pipe.

Through adopting above-mentioned technical scheme, the cooperation pipe is used for carrying out the adaptation to the bearing of waiting to test of different specifications, and the external diameter of cooperation pipe needs to be unanimous with the inner circle diameter of waiting to test the bearing, and operating personnel can make the installation that the bearing of waiting to test can be stable in experimental pivot through the cooperation pipe of changing different external diameter sizes.

Preferably, one end of the second mounting hole, which is located on the outer surface of the matching pipe, is a counter bore, and when the matching pipe and the spindle body are fixedly mounted, a nut of a screw for mounting the matching pipe is not located in the second mounting hole.

Through adopting above-mentioned technical scheme, the setting of second mounting hole one end counter bore can make the cooperation pipe surface not have the arch to be convenient for treat the installation of experimental bearing.

Preferably, the first fixed block is square, the end face of the first fixed block is attached to the inner wall face of one end, located in the length direction of the test rotating shaft, of the test bin, the bottom face of the first fixed block is attached to the inner bottom face of the test bin, and the side faces of the first fixed block are attached to the inner wall faces, located on the two sides of the test bin, of the length direction of the rotating shaft.

Through adopting above-mentioned technical scheme, the internal face in the surface of first fixed block and experimental storehouse is laminated mutually, can be convenient for operating personnel to realize quick location installation to first fixed block, and the inner wall through experimental storehouse simultaneously carries on spacingly to first fixed block, reduces rocking of first fixed block to further reduce experimental pivot and produce rocking in the process of the test.

Preferably, the vertex angle of the first fixed block is provided with a positioning gap, the number of the positioning gaps is more than or equal to 1 and less than or equal to 4, and an adjusting plate is attached between the end face of the first fixed block and the inner wall face of the test chamber.

Through adopting above-mentioned technical scheme, the setting of location breach can be convenient for the operating personnel quick rotate first fixed block to the exact position and install to effectively reduce the condition of installation dislocation and take place, the setting of regulating plate can effectively fill the clearance that probably exists between test chamber and the first fixed block, thereby effectively improve the stability of first fixed block self.

Preferably, a plurality of lubricating oil grooves are formed in the end face, attached to the inner wall of the test bin, of the first fixing block, oil filling holes are formed in the top face of the first fixing block, one end of each lubricating oil groove is communicated with the position of the corresponding bearing, and the other end of each lubricating oil groove is communicated with the corresponding oil filling hole.

Through adopting above-mentioned technical scheme, in the bearing life test process, operating personnel can follow the oil filler point and pour into lubricating oil into, and lubricating oil can flow into to the position at bearing place along the lubricant sump, can play the lubrication action to bearing on the one hand, and on the other hand also can cool down bearing in the bearing of continuous operation.

Preferably, the center of the bottom surface of the test bin is provided with a first positioning groove, the second fixing block is mounted in the first positioning groove in a fitting manner, the side surface of the second fixing block is provided with a plurality of protruding positioning blocks, the side surface of the test bin is provided with a second positioning groove, and when the second fixing block is fixedly mounted in the test bin, the positioning blocks are mounted in the second positioning groove and are attached to the inner wall surface of the second positioning groove.

Through adopting above-mentioned technical scheme, the setting of first constant head tank can be convenient for the second fixed block and realize quick location installation, reduces the produced offset of second fixed block self in the experimentation simultaneously. The setting of second constant head tank and locating piece can further be fixed the position of second fixed block, reduces the second fixed block at the produced offset of test pivot axis direction of edge in the experimentation.

Preferably, a test hole is formed in the center of the second fixing block, an adjusting pipe is mounted on the inner wall of the test hole, and the inner wall of the adjusting pipe is attached to the surface of the outer ring of the bearing to be tested.

Through adopting above-mentioned technical scheme, the setting of regulating pipe can be convenient for the second fixed block to realize fixing the bearing of waiting to test of multiple different models.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the first fixing block, the effect of reducing the shaking amplitude of the test rotating shaft in the high-speed rotating process can be achieved;

2. through the setting of second fixed block, can play and treat that experimental bearing carries out stable fixed effect.

Drawings

Fig. 1 is a plan view of a bearing life test device according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a first fixing block of a bearing life test device according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a second fixing block of the bearing life testing apparatus according to the embodiment of the application.

Reference number specification, 1, body shell; 2. a drive mechanism; 3. a test bin; 31. a first positioning groove; 32. a second positioning groove; 4. a first fixed block; 41. a load bearing; 42. positioning the notch; 43. a lubricating oil groove; 44. an oil filler hole; 5. a second fixed block; 51. a bearing to be tested; 52. positioning blocks; 53. a test well; 54. an adjusting tube; 6. a test spindle; 61. a main shaft body; 62. a mating tube; 7. an adjusting plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses bearing life test device. Referring to fig. 1-3, the bearing life test device comprises a machine body shell 1 and a driving mechanism 2 arranged outside the machine body shell 1, a test chamber 3 is formed in the machine body shell 1, a first fixing block 4 and a second fixing block 5 are arranged in the test chamber 3, the first fixing block 4 is provided with two fixing blocks and symmetrically arranged on two sides of the second fixing block 5, a bearing 41 is installed in the first fixing block 4, the test device further comprises a test rotating shaft 6, two ends of the test rotating shaft 6 are respectively installed in the bearing 41, a bearing 51 to be tested is installed in the middle section of the test rotating shaft 6, an outer ring of the bearing 51 to be tested is fixedly installed in the second fixing block 5, and one end of the test rotating shaft 6 penetrates through the inner wall of the test chamber 3 to be connected with the power output end of the driving mechanism 2.

Referring to fig. 1 to 3, the first fixing block 4 is square, the end face of the first fixing block 4 is attached to the inner wall face of one end of the test chamber 3 in the length direction of the test rotating shaft 6, the bottom face of the first fixing block 4 is attached to the inner bottom face of the test chamber 3, and the side faces of the first fixing block 4 are attached to the inner wall faces of the test chamber 3 on both sides in the length direction of the rotating shaft. The apex angle department of first fixed block 4 is provided with location breach 42, and the quantity more than or equal to 1 and less than or equal to 4 of location breach 42, the laminating is provided with regulating plate 7 between the terminal surface of first fixed block 4 and the internal wall face of experimental storehouse 3, and in this embodiment, the quantity of location breach 42 on first fixed block 4 is 3. The setting of location breach 42 can be convenient for operating personnel is quick rotates first fixed block 4 to the exact position and installs to effectively reduce the condition of installation dislocation and take place, the setting of regulating plate 7 can effectively fill the clearance that probably exists between test chamber and the first fixed block 4, thereby effectively improves the stability of first fixed block 4 self.

Referring to fig. 1-3, a plurality of lubricating oil grooves 43 are formed in the end face, which is attached to the inner wall of the test chamber 3, of the first fixing block 4, an oil filling hole 44 is formed in the top face of the first fixing block 4, one end of each lubricating oil groove 43 is communicated with the position of the bearing 41, and the other end of each lubricating oil groove 43 is communicated with the oil filling hole 44. In the bearing life test process, operating personnel can pour into lubricating oil into from oil filler point 44, and lubricating oil can flow into the position to bearing 41 place along lubrication groove 43, can play the lubrication action to bearing 41 on the one hand, and on the other hand also can cool down the bearing in the bearing that lasts the operation.

Referring to fig. 1 to 3, a test hole 53 is formed in the center of the second fixing block 5, an adjusting pipe 54 is installed on the inner wall of the test hole 53, the inner wall of the adjusting pipe 54 is attached to the surface of the outer ring of the bearing 51 to be tested, and the second fixing block 5 can fix the bearings 51 to be tested in various types conveniently due to the arrangement of the adjusting pipe 54. The bottom surface central point department of putting of experimental storehouse 3 is provided with first constant head tank 31, and the laminating of second fixed block 5 is installed in first constant head tank 31, and the side of second fixed block 5 is provided with a plurality of outstanding locating pieces 52, has seted up second constant head tank 32 on the side of experimental storehouse 3, and when second fixed block 5 fixed mounting was in experimental storehouse 3, locating piece 52 was installed in second constant head tank 32 and was laminated mutually with the internal face of second constant head tank 32. The arrangement of the first positioning groove 31 can facilitate the second fixing block 5 to realize quick positioning and installation, and meanwhile, the position deviation generated by the second fixing block 5 in the test process is reduced. The second positioning groove 32 and the positioning block 52 are arranged to further fix the position of the second fixing block 5, so that the position deviation of the second fixing block 5 in the axial direction of the test rotating shaft 6 in the test process is reduced.

Referring to fig. 1-3, the test rotating shaft 6 includes a main shaft body 61 and a matching pipe 62, the matching pipe 62 is detachably connected with the main shaft body 61, a first mounting hole is disposed at a middle position of the main shaft body 61, a second mounting hole is disposed on the matching pipe 62, the matching pipe 62 is fixedly connected with the main shaft body 61 through a screw, and an inner ring of the bearing 51 to be tested is attached to an outer surface of the matching pipe 62. One end of the second mounting hole on the outer surface of the matching pipe 62 is a counter bore, and when the matching pipe 62 and the spindle body 61 are fixedly mounted, a nut of a screw for mounting the matching pipe 62 is not in the second mounting hole. The second mounting hole is countersunk at one end so that no protrusions are present on the surface of the fitting tube 62, thereby facilitating the mounting of the bearing 51 to be tested. The matching pipe 62 is used for matching the bearings 51 to be tested with different specifications, the outer diameter of the matching pipe 62 needs to be consistent with the diameter of the inner ring of the bearing 51 to be tested, and an operator can stably install the bearing 51 to be tested on the test rotating shaft 6 by replacing the matching pipe 62 with different outer diameter sizes.

The implementation principle of the bearing life test device in the embodiment of the application is as follows: second fixed block 5 is used for realizing the installation of waiting to test bearing 51, first fixed block 4 sets up the both sides at experimental pivot 6 respectively, and all be provided with the bearing 41 that is used for fixed test pivot 6 in first fixed block 4, when experimental pivot 6 rotates, bearing 41 can make experimental pivot 6 realize high-speed the rotation, and effectively reduce 6 both ends of experimental pivot and rotate produced rocking of in-process, thereby effectively improve the speed upper limit that waiting to test bearing 51 can reach in this kind of testing arrangement, and effectively improved the stability in the bearing test process, make this kind of testing arrangement can be applicable to the experimental scene of multiple difference.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a bearing life test device which characterized in that: comprises a machine body shell (1) and a driving mechanism (2) arranged outside the machine body shell (1), a test bin (3) is formed in the machine body shell (1), a first fixed block (4) and a second fixed block (5) are arranged in the test bin (3), the two first fixed blocks (4) are symmetrically arranged at two sides of the second fixed block (5), the first fixed block (4) is internally provided with a bearing (41), the test device also comprises a test rotating shaft (6), two ends of the test rotating shaft (6) are respectively arranged in the bearing bearings (41), the middle section of the test rotating shaft (6) is provided with a bearing (51) to be tested, the outer ring of the bearing (51) to be tested is fixedly arranged in the second fixed block (5), one end of the test rotating shaft (6) penetrates through the inner wall of the test bin (3) to be connected with the power output end of the driving mechanism (2).

2. A bearing life test apparatus according to claim 1, characterized in that: experimental pivot (6) are including main shaft body (61) and cooperation pipe (62), detachable connection between cooperation pipe (62) and the main shaft body (61), the intermediate position department of the main shaft body (61) is provided with first mounting hole, the second mounting hole has been seted up on cooperation pipe (62), realize fixed connection through the screw between cooperation pipe (62) and the main shaft body (61), treat that the inner circle of experimental bearing (51) laminates with the surface of cooperation pipe (62) mutually.

3. A bearing life test apparatus according to claim 2, wherein: one end of the second mounting hole, which is arranged on the outer surface of the matching pipe (62), is a counter bore, and when the matching pipe (62) and the spindle body (61) are fixedly mounted, a nut of a screw for mounting the matching pipe (62) is not arranged in the second mounting hole.

4. A bearing life test apparatus according to claim 1, characterized in that: the testing device is characterized in that the first fixing block (4) is square, the end face of the first fixing block (4) is attached to the inner wall face of one end, located in the length direction of the testing rotating shaft (6), of the testing bin (3), the bottom face of the first fixing block (4) is attached to the inner bottom face of the testing bin (3), and the side face of the first fixing block (4) is attached to the inner wall faces, located in the length direction of the rotating shaft, of the testing bin (3).

5. A bearing life test device according to claim 4, characterized in that: the vertex angle department of first fixed block (4) is provided with location breach (42), the quantity more than or equal to 1 and less than or equal to 4 of location breach (42), the laminating is provided with regulating plate (7) between the terminal surface of first fixed block (4) and the internal wall of experimental storehouse (3).

6. A bearing life test device according to claim 5, characterized in that: a plurality of lubricating oil grooves (43) are formed in the end face, attached to the inner wall of the test bin (3), of the first fixing block (4), oil filling holes (44) are formed in the top face of the first fixing block (4), one ends of the lubricating oil grooves (43) are communicated with the positions of the bearing bearings (41), and the other ends of the lubricating oil grooves (43) are communicated with the oil filling holes (44).

7. A bearing life test apparatus according to claim 1, characterized in that: the testing device is characterized in that a first positioning groove (31) is formed in the center of the bottom of the testing bin (3), the second fixing block (5) is installed in the first positioning groove (31) in a fitting mode, a plurality of protruding positioning blocks (52) are arranged on the side face of the second fixing block (5), a second positioning groove (32) is formed in the side face of the testing bin (3), and when the second fixing block (5) is fixedly installed in the testing bin (3), the positioning blocks (52) are installed in the second positioning groove (32) and are attached to the inner wall face of the second positioning groove (32).

8. The bearing life test device according to claim 7, wherein: a test hole (53) is formed in the center of the second fixing block (5), an adjusting pipe (54) is installed on the inner wall of the test hole (53), and the inner wall of the adjusting pipe (54) is attached to the surface of an outer ring of the bearing (51) to be tested.