A rolling bearing test device

Abstract

A rolling bearing test device disclosed in the present invention includes a frame, a main shaft is arranged on the frame, an eccentric regulator is arranged on the frame, a bearing to be tested is arranged on the main shaft, the eccentric regulator includes a column arranged on the frame and a bearing seat for mounting the bearing to be tested, the bearing seat is slidably arranged on the column, two bearing seats are connected together by a connecting plate, the eccentric regulator also includes an adjustment mechanism, the adjustment mechanism includes a lead screw arranged on the frame, a nut seat is arranged on the lead screw, which cooperates with the lead screw and reciprocates along the axis of the lead screw, an inclined surface is arranged on the nut seat, a contact block in contact with the inclined surface is arranged on the connecting plate, and a locker for locking the lead screw is arranged on the frame. By locking the lead screw with the locker, the lead screw will not malfunction, thereby improving the test accuracy.

Description

Technical Field

[0001] The present invention belongs to the technical field of bearing testing, and in particular relates to a rolling bearing testing device. Background Art

[0002] As an important basic component, rolling bearings are widely used in various mechanical equipment. The service life of bearings is an important indicator to measure bearing performance. Therefore, relevant parameters of bearings should be tested during the design and production process.

[0003] In the prior art, the service life of a rolling bearing is usually tested based on its state. During the test, a corresponding force is applied to the bearing and relevant parameters of the bearing are recorded to provide a basis for analyzing the performance of the bearing.

[0004] The test device in the prior art adjusts the position of the bearing to be tested relative to the main shaft through a screw-nut pair. This operation mode can meet the test requirements of the bearing. However, in actual application, since the bearing to be tested may generate large vibrations after being eccentric relative to the main shaft, this vibration may cause the screw-nut pair to malfunction, thereby reducing the test accuracy. Summary of the invention

[0005] The present disclosure provides a rolling bearing testing device, aiming to solve the problem of low rolling bearing testing accuracy in the prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present disclosure is:

[0007] A rolling bearing test device, comprising a frame, a main shaft is arranged on the frame, the main shaft is rotatably connected to the frame, a motor is arranged at one end of the main shaft to drive the main shaft to rotate, an axial loader is arranged at the other end of the main shaft, the axial loader applies an axial force to the main shaft, a radial loader is also arranged on the frame, the radial loader applies a radial force to the main shaft, an eccentricity regulator is arranged on the frame, a bearing to be tested is arranged on the main shaft, the eccentricity regulator adjusts the eccentricity of the bearing to be tested relative to the main shaft, and the eccentricity regulator includes a vertical The eccentricity adjuster further comprises an adjusting mechanism, wherein the adjusting mechanism comprises a lead screw arranged on the frame, the lead screw is provided with a nut seat which cooperates with the lead screw and reciprocates along the axis of the lead screw, the nut seat is provided with an inclined surface, the connecting plate is provided with a contact block which contacts with the inclined surface, the contact block contacts with different positions of the inclined surface to adjust the eccentricity of the bearing to be tested relative to the main shaft, and the frame is provided with a locker which locks the lead screw.

[0008] A further improved solution: the locking device includes a ratchet arranged on the lead screw, the ratchet and the lead screw are an integral structure, the frame is provided with a ratchet that cooperates with the ratchet, the lead screw rotates in a first direction and the ratchet disengages from the ratchet, the lead screw rotates in a second direction and the ratchet contacts the ratchet, the first direction is opposite to the second direction, and the lead screw rotates in the first direction to cause the bearing seat to move away from the frame.

[0009] A further improved solution: the ratchet is rotatably connected to the frame, a torsion spring is provided between the frame and the ratchet to make the ratchet contact the ratchet wheel, and a handle is also provided on the ratchet. The handle is operated to overcome the force of the torsion spring to disengage the ratchet from the ratchet wheel.

[0010] A further improved solution: the frame is provided with a lug for mounting the ratchet, the ratchet is rotatably connected to the lug via a rotating shaft, the lug is provided with an axial hole that cooperates with the rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixed to the ratchet, and the other end of the torsion spring is fixed to the lug.

[0011] A further improved solution: a vertical plate is further provided on the frame, the lead screw is rotatably connected to the frame via the vertical plate, there are two vertical plates, and the two vertical plates are respectively provided at both ends of the lead screw.

[0012] A further improved solution: a handwheel for rotating the lead screw is provided at one end of the lead screw, a rubber pad is sleeved on the handwheel, a pattern is provided on the rubber pad, and the pattern is recessed into the rubber pad.

[0013] A further improved solution: the frame is provided with guide rails, there are at least two guide rails, the guide rails are arranged parallel to the lead screw, and the nut seat is provided with guide grooves matching with the guide rails.

[0014] A further improved solution: the cross-sectional shape of the guide rail is semicircular, the guide rail protrudes from the frame, and the guide rail and the frame are an integrated structure.

[0015] The beneficial effects of the present disclosure are:

[0016] A rolling bearing test device, comprising a frame, a main shaft is arranged on the frame, the main shaft is rotatably connected to the frame, a motor is arranged at one end of the main shaft to drive the main shaft to rotate, an axial loader is arranged at the other end of the main shaft, the axial loader applies an axial force to the main shaft, a radial loader is also arranged on the frame, the radial loader applies a radial force to the main shaft, an eccentricity regulator is arranged on the frame, a bearing to be tested is arranged on the main shaft, the eccentricity regulator adjusts the eccentricity of the bearing to be tested relative to the main shaft, and the eccentricity regulator includes a vertical The eccentricity adjuster further comprises an adjusting mechanism, wherein the adjusting mechanism comprises a lead screw arranged on the frame, the lead screw is provided with a nut seat which cooperates with the lead screw and reciprocates along the axis of the lead screw, the nut seat is provided with an inclined surface, the connecting plate is provided with a contact block which contacts with the inclined surface, the contact block contacts with different positions of the inclined surface to adjust the eccentricity of the bearing to be tested relative to the main shaft, and the frame is provided with a locker which locks the lead screw.

[0017] During use, the lead screw is rotated, and the lead screw drives the nut seat to move. The inclined surface on the nut seat contacts the contact block. The contact block contacts the inclined surface at different positions to adjust the eccentricity of the bearing to be tested relative to the main shaft. After the eccentricity of the bearing to be tested relative to the main shaft is adjusted, the lead screw can be easily locked by the locker, and the lead screw will not malfunction, which improves the test accuracy. The two bearing seats are connected together by a connecting plate, and the two bearing seats move at the same time, which improves the displacement accuracy of the bearing seats and improves the test efficiency of the rolling bearing test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of a rolling bearing testing device in the present disclosure in the first direction.

[0020] Figure 2 It is a schematic diagram of a rolling bearing testing device in the present disclosure in the second direction.

[0021] Figure 3 It is a schematic diagram of a rolling bearing testing device in the present disclosure in the third direction.

[0022] Figure 4 It is a schematic diagram of the fourth direction of a rolling bearing testing device in the present disclosure.

[0023] Description of the numbers in the figure:

[0024] 1-frame; 2-spindle; 3-motor; 4-column; 5-bearing seat; 6-connecting plate; 7-screw; 8-nut seat; 9-inclined surface; 10-contact block; 11-ratchet; 12-ratchet; 13-lug; 14-vertical plate; 15-handwheel; 16-guide rail. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not used to limit the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present disclosure.

[0026] Embodiment 1:

[0027] See also Figures 1 to 4 A rolling bearing test device comprises a frame 1, a main shaft 2 is arranged on the frame 1, the main shaft 2 is rotatably connected to the frame 1, a motor 3 for driving the main shaft 2 to rotate is arranged at one end of the main shaft 2, an axial loader is arranged at the other end of the main shaft 2, the axial loader applies an axial force to the main shaft 2, a radial loader is also arranged on the frame 1, the radial loader applies a radial force to the main shaft 2, an eccentric regulator is arranged on the frame 1, a bearing to be tested is arranged on the main shaft 2, the eccentric regulator adjusts the eccentricity of the bearing to be tested relative to the main shaft 2, and the eccentric regulator comprises a column 4 arranged on the frame 1 and A bearing seat 5 for installing the bearing to be tested is slidably set on the column 4. There are two bearing seats 5, and the two bearing seats 5 are connected together by a connecting plate 6. The eccentric regulator also includes an adjusting mechanism, which includes a screw 7 arranged on the frame 1, and a nut seat 8 is arranged on the screw 7, which cooperates with the screw 7 and reciprocates along the axial direction of the screw 7. An inclined surface 9 is arranged on the nut seat 8, and a contact block 10 in contact with the inclined surface 9 is arranged on the connecting plate 6. The contact block 10 contacts with different positions of the inclined surface 9 to adjust the eccentricity of the bearing to be tested relative to the main shaft 2. A locker for locking the screw 7 is arranged on the frame 1.

[0028] The axial loader and the radial loader are conventional devices in the prior art, and their usage and configuration methods refer to the prior art.

[0029] The two bearing seats 5 and the connecting plate 6 are an integrated structure, which improves the synchronization performance of the two bearing seats 5. For example, the two bearing seats 5 can be welded to the connecting plate 6 respectively, so that the bearing seats 5 are easy to process. Ribs can be integrally provided on the connecting plate 6 to improve the strength of the connecting plate 6 and prevent the connecting plate 6 from bending and deformation.

[0030] The locker includes a ratchet 11 arranged on the lead screw 7, and the ratchet 11 and the lead screw 7 are an integral structure. The frame 1 is provided with a ratchet 12 that cooperates with the ratchet 11. The lead screw 7 rotates in a first direction and the ratchet 12 disengages from the ratchet 11. The lead screw 7 rotates in a second direction and the ratchet 12 contacts the ratchet 11. The first direction is opposite to the second direction, and the lead screw 7 rotates in the first direction to cause the bearing seat 5 to move away from the frame 1.

[0031] The ratchet 12 is rotatably connected to the frame 1, a torsion spring is provided between the frame 1 and the ratchet 12 to make the ratchet 12 contact the ratchet wheel 11, and a handle is also provided on the ratchet 12. The handle is operated to overcome the force of the torsion spring to disengage the ratchet 12 from the ratchet wheel 11. The handle and the ratchet 12 can be an integrated structure.

[0032] The frame 1 is provided with a lug 13 for mounting the ratchet 12, the ratchet 12 is rotatably connected to the lug 13 via a rotating shaft, the lug 13 is provided with an axial hole matched with the rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixed to the ratchet 12, and the other end of the torsion spring is fixed to the lug 13. The lug 13 can be welded to the frame 1, or fixed to the frame 1 by bolts.

[0033] Embodiment 2:

[0034] The difference between this embodiment and the first embodiment is that a vertical plate 14 is further provided on the frame 1, and the lead screw 7 is rotatably connected to the frame 1 through the vertical plate 14. There are two vertical plates 14, and the two vertical plates 14 are respectively provided at the two ends of the lead screw 7. The vertical plates 14 are fixed to the frame 1 by bolts.

[0035] A hand wheel 15 for rotating the lead screw 7 is disposed at one end of the lead screw 7 , and a rubber pad is sleeved on the hand wheel 15 , and a pattern is disposed on the rubber pad, and the pattern is recessed into the rubber pad.

[0036] The frame 1 is provided with guide rails 16 , and there are at least two guide rails 16 . The guide rails 16 are arranged parallel to the lead screw 7 , and the nut seat 8 is provided with guide grooves matched with the guide rails 16 .

[0037] The cross-section of the guide rail 16 is semicircular, the guide rail 16 protrudes from the frame 1, and the guide rail 16 and the frame 1 are an integrated structure.

[0038] The following is a further introduction to a rolling bearing test device disclosed in the present invention in combination with an application method:

[0039] During use, the lead screw 7 is rotated, and the lead screw 7 drives the nut seat 8 to move. The inclined surface 9 on the nut seat 8 contacts the contact block 10. The contact block 10 contacts the inclined surface 9 at different positions to adjust the eccentricity of the bearing to be tested relative to the main shaft 2. After the eccentricity of the bearing to be tested relative to the main shaft 2 is adjusted to the right position, the lead screw 7 can be conveniently locked by the locker, and the lead screw 7 will not malfunction, thereby improving the test accuracy. The two bearing seats 5 are connected together by the connecting plate 6, and the two bearing seats 5 act at the same time, which improves the displacement accuracy of the bearing seats 5 and improves the test efficiency of the rolling bearing test device.

[0040] Corresponding sensors, such as temperature sensors, vibration sensors, etc., are arranged on the main shaft 2 and the bearing seat 5. The sensors communicate with the host computer to monitor the relevant parameters of the bearing to be tested.

[0041] The present disclosure is not limited to the above optional implementation modes. Under the premise of not conflicting with each other, the various schemes can be combined arbitrarily. Anyone can derive other forms of products under the inspiration of the present disclosure. However, no matter what changes are made in their shapes or structures, all technical schemes that fall within the scope of the claims of the present disclosure shall fall within the protection scope of the present disclosure.

Claims

1. A rolling bearing test device, Features: The invention comprises a frame, a main shaft is arranged on the frame, the main shaft is rotatably connected to the frame, a motor for driving the main shaft to rotate is arranged at one end of the main shaft, an axial loader is arranged at the other end of the main shaft, the axial loader applies an axial force to the main shaft, a radial loader is also arranged on the frame, the radial loader applies a radial force to the main shaft, an eccentric regulator is arranged on the frame, a bearing to be tested is arranged on the main shaft, the eccentric regulator adjusts the eccentricity of the bearing to be tested relative to the main shaft, and the eccentric regulator comprises a column arranged on the frame and a mounting plate for installing the eccentric regulator. The bearing seat of the bearing to be tested is slidably set on the column, there are two bearing seats, and the two bearing seats are connected together by a connecting plate. The eccentric adjuster also includes an adjusting mechanism, which includes a screw arranged on the frame, and a nut seat is provided on the screw, which cooperates with the screw and reciprocates along the axis of the screw. The nut seat is provided with an inclined surface, and a contact block contacting the inclined surface is provided on the connecting plate. The contact block contacts the inclined surface at different positions to adjust the eccentricity of the bearing to be tested relative to the main shaft, and a locker for locking the screw is provided on the frame.

2. A rolling bearing testing device according to claim 1, Features: The locker includes a ratchet arranged on the lead screw, the ratchet and the lead screw are an integral structure, and the frame is provided with a ratchet that cooperates with the ratchet. The lead screw rotates in a first direction and the ratchet disengages from the ratchet. The lead screw rotates in a second direction and the ratchet contacts the ratchet. The first direction is opposite to the second direction, and the lead screw rotates in the first direction to cause the bearing seat to move in a direction away from the frame.

3. A rolling bearing testing device according to claim 2, Features: The ratchet is rotatably connected to the frame, a torsion spring is arranged between the frame and the ratchet to make the ratchet contact the ratchet wheel, and a handle is also arranged on the ratchet. The handle is operated to overcome the force of the torsion spring to disengage the ratchet from the ratchet wheel.

4. A rolling bearing testing device according to claim 3, Features: The frame is provided with a lug for mounting the ratchet, the ratchet is rotatably connected to the lug via a rotating shaft, the lug is provided with an axial hole matching the rotating shaft, the torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixed to the ratchet, and the other end of the torsion spring is fixed to the lug.

5. A rolling bearing testing device according to claim 4, Features: The frame is also provided with a vertical plate, and the lead screw is rotatably connected to the frame through the vertical plate. There are two vertical plates, and the two vertical plates are respectively provided at two ends of the lead screw.

6. A rolling bearing testing device according to claim 5, Features: A hand wheel for rotating the lead screw is disposed at one end of the lead screw, a rubber pad is sleeved on the hand wheel, a pattern is disposed on the rubber pad, and the pattern is recessed into the rubber pad.

7. A rolling bearing testing device according to claim 6, Features: The frame is provided with guide rails, and there are at least two guide rails. The guide rails are arranged in parallel with the lead screw, and the nut seat is provided with guide grooves matched with the guide rails.

8. A rolling bearing testing device according to claim 7, Features: The cross-section of the guide rail is semicircular, the guide rail protrudes from the frame, and the guide rail and the frame are an integrated structure.

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