Abrasion resistance testing device for rolling bearing

Abstract

The utility model discloses a device for testing the wear resistance of a rolling bearing, and relates to the technical field of bearing testing. The rolling bearing comprises a base, a supporting column is fixedly installed on the bottom face of the inner wall of the base and penetrates through the top face of the base, an inner ring supporting plate is fixedly installed on the top face of the supporting column, and a rolling bearing body is placed on the top face of the inner ring supporting plate. Under the action of the distance adjusting assembly, the inner ring and the outer ring of the rolling bearing body are extruded and fixed by transverse force applied by the inner supporting block and the outer clamping plate respectively, meanwhile, the inner ring is longitudinally extruded and fixed by the outer ring pressing assembly and the inner ring supporting plate in a matched mode, and the outer ring is longitudinally extruded and fixed by the outer ring supporting plate and the outer ring pressing assembly in a matched mode. The inner ring and the outer ring of the rolling bearing body are further extruded and fixed, fixation is more reliable and firmer, and the situation that the outer ring slides relative to the outer clamping plate due to increase of ball friction force of the rolling bearing body after multiple times of rotation, and the accuracy of a test result is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing testing, in particular to a rolling bearing wear resistance testing device. Background Art

[0002] As an important mechanical part, the service life of rolling bearings has a direct impact on the normal operation of the machinery. Correctly estimating the service life of rolling bearings is of great significance to the maintenance of mechanical equipment. The service life of rolling bearings is determined by their wear resistance. In laboratory tests, special testing equipment is required to test the wear resistance of rolling bearings.

[0003] In the prior art, a Chinese patent with authorization announcement number CN107389348A discloses a bearing wear resistance testing device. Through the cooperation of the gear and the rack, the third rotating motor drives to change the distance between the two clamping blocks. Through the cooperation of the threaded rod and the sliding block, the first rotating motor drives to change the distance between the two support blocks. The cooperation between the support block and the clamping block achieves the effect of automatically fixing the bearing. The height of the clamping block is adjusted by the push rod motor, which facilitates the placement and removal of the bearing. The second rotating motor drives the fixing frame to rotate to test the bearing. The present invention has a reasonable structure and is simple to operate. It can automatically clamp and fix the bearing, and the installation and disassembly of the bearing are very simple.

[0004] The above-mentioned prior art solutions have the following defects: there is friction between the outer ring and inner ring of the bearing and the ball. As the number of revolutions increases during the test, the surface of the ball becomes increasingly rough, causing the friction on the outer ring and inner ring of the bearing to gradually increase. The inner ring is fixed only by two support blocks and the outer ring is fixed only by two clamping blocks. The static friction generated by this cannot overcome the gradually increasing rolling friction, which ultimately causes the inner ring or outer ring of the bearing to slide, affecting the accuracy of the test results.

[0005] Therefore, a rolling bearing wear resistance testing device is proposed. Utility Model Content

[0006] The purpose of the utility model is to solve the problems mentioned in the above background technology, and provide a rolling bearing wear resistance testing device.

[0007] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0008] The cam is provided with an inner support plate, and the outer support plate is provided with an outer support plate, and the outer support plate is provided with an outer support plate.

[0009] Furthermore, the distance adjusting component includes a slide groove and a control motor, the distance adjusting component includes two slide grooves, the two slide grooves are symmetrically arranged, the two control motors are respectively fixedly installed inside the inner ring lower pressure plate and the rotating plate, the output end of the control motor is fixedly connected with a double-headed threaded rod, the double-headed threaded rod passes through the inner wall surfaces of the two slide grooves and is rotatably arranged, a slider is slidably installed on the inner wall surface of the slide groove, the slider is symmetrically threadedly installed on the surface of the double-headed threaded rod, the inner support block is fixedly installed on the bottom surface of the upper slider, and the outer clamping plate is fixedly installed on the surface of the lower slider.

[0010] Furthermore, the sliding block on the lower side is an L-shaped structure, and the double-headed threaded rod on the lower side is arranged to deviate from the axis of the rotating plate.

[0011] Furthermore, the outer ring pressing assembly includes a longitudinal groove, which is opened on the relative surfaces of the two outer clamps, and a longitudinal threaded rod is rotatably installed on the bottom surface of the inner wall of the longitudinal groove, and the longitudinal threaded rod passes through the top surface of the outer clamp, and is rotatably arranged, and a knob is fixedly installed on the top surface of the longitudinal threaded rod, and an outer ring pressing plate is slidably installed on the inner wall surface of the longitudinal groove, and the outer ring pressing plate is threadedly installed on the surface of the longitudinal threaded rod.

[0012] Furthermore, the rotation drive assembly includes a drive motor, which is fixedly installed on the bottom surface of the inner wall of the base, and the output end of the drive motor is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to the top wall of the base, and a driving gear is fixedly installed on the surface of the rotating shaft, and a driven gear ring is meshed on the surface of the driving gear, and the driven gear ring is fixedly sleeved on the outer side surface of the rotating plate.

[0013] Furthermore, the diameters of the inner ring support plate and the inner ring lower pressure plate are the same as the outer diameter of the inner ring of the rolling bearing body.

[0014] The beneficial effects of the utility model are as follows:

[0015] Through the action of the distance adjusting assembly, the inner ring and outer ring of the rolling bearing body are squeezed and fixed by the lateral forces applied by the inner support block and the outer clamping plate respectively, while the inner ring is longitudinally squeezed and fixed by the outer ring pressing assembly and the inner ring supporting plate, and the outer ring is longitudinally squeezed and fixed by the outer ring supporting plate and the outer ring pressing assembly, so that the inner ring and outer ring of the rolling bearing body are further squeezed and fixed, and the fixation is more reliable and firm, avoiding the increase of ball friction of the rolling bearing body after multiple rotations, causing the outer ring to slide relative to the outer clamping plate and affect the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an axonometric diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a front cross-sectional view of the three-dimensional structure of the utility model;

[0018] Figure 3 It is a top cross-sectional view of the three-dimensional structure of the utility model;

[0019] Figure 4 This utility model Figure 2 A magnified view of the structure of the middle part A;

[0020] Figure numerals: 1. base; 2. support column; 3. inner ring support plate; 4. gantry; 5. electric telescopic rod; 6. inner ring lower pressure plate; 7. rotating plate; 8. distance adjustment assembly; 801. slide groove; 802. control motor; 803. double-headed threaded rod; 804. slider; 9. inner support block; 10. outer clamping plate; 11. outer ring support plate; 12. outer ring lower pressure assembly; 121. longitudinal groove; 122. longitudinal threaded rod; 123. knob; 124. outer ring lower pressure plate; 13. rotation drive assembly; 131. drive motor; 132. rotating shaft; 133. driving gear; 134. driven gear ring; 14. rolling bearing body. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] like Figures 1 to 4 As shown, a rolling bearing wear resistance testing device comprises a base 1, a support column 2 is fixedly installed on the bottom surface of the inner wall of the base 1, the support column 2 passes through the top surface of the base 1, an inner ring support plate 3 is fixedly installed on the top surface of the support column 2, a rolling bearing body 14 is placed on the top surface of the inner ring support plate 3, a gantry 4 is fixedly installed on the top surface of the base 1, an electric telescopic rod 5 is fixedly installed on the bottom surface of the horizontal part of the gantry 4, an inner ring lower pressure plate 6 is fixedly installed on the bottom surface of the telescopic end of the electric telescopic rod 5, a rotating plate 7 is rotatably installed on the outer side surface of the support column 2, a distance adjusting component 8 is provided on the top surface of the rotating plate 7 and the bottom surface of the inner ring lower pressure plate 6, an inner support block 9 is fixedly installed on the surface of the moving part of the upper side distance adjusting component 8, an outer clamping plate 10 is fixedly installed on the surface of the moving part of the lower side distance adjusting component 8, an outer ring support plate 11 is fixedly installed on the bottom surface of the outer clamping plate 10 and an outer ring lower pressure component 12 is provided on the surface, and a rotating driving component 13 for driving the rotating plate 7 to rotate is provided inside the base 1.

[0027] More specifically, the rolling bearing body 14 is placed on the top surface of the inner ring support plate 3, the inner ring of the rolling bearing body 14 is supported by the inner ring support plate 3 and the outer ring is suspended, the telescopic end of the electric telescopic rod 5 drives the inner ring lower pressure plate 6 and the distance adjustment component 8 to move downward, so that the inner ring lower pressure plate 6 squeezes the inner ring top surface, and the distance between the two inner support blocks 9 is adjusted by the upper distance adjustment component 8, so that the two inner support blocks 9 are opened to support the inner ring of the rolling bearing body 14, and at the same time, the distance between the two outer clamping plates 10 is adjusted by the lower distance adjustment component 8, so that the two outer clamping plates 10 clamp and fix the outer ring of the rolling bearing body 14 from both sides, and at the same time, the outer ring support plate 11 on the bottom surface of the outer clamping plate 10 supports the bottom surface of the outer ring, and the outer ring lower pressure component 12 is used to squeeze The top surface of the outer ring is driven by the rotating plate 7 to rotate through the rotating drive assembly 13, and then the outer ring of the rolling bearing body 14 is driven to rotate to carry out a wear resistance test, so that the inner ring and the outer ring of the rolling bearing body 14 are squeezed and fixed by the lateral forces applied by the inner support block 9 and the outer clamping plate 10 respectively, while the inner ring is longitudinally squeezed and fixed by the outer ring pressing assembly 12 and the inner ring supporting plate 3, and the outer ring is longitudinally squeezed and fixed by the outer ring supporting plate 11 and the outer ring pressing assembly 12, so that the inner ring and the outer ring of the rolling bearing body 14 are further squeezed and fixed, and the fixation is more reliable and firm, so as to avoid the increase of the ball friction of the rolling bearing body 14 after multiple rotations, which causes the outer ring to slide relative to the outer clamping plate 10 and affects the accuracy of the test results.

[0028] The distance adjusting component 8 includes a slide groove 801 and a control motor 802. The distance adjusting component 8 includes two slide grooves 801, and the two slide grooves 801 are symmetrically arranged. The two control motors 802 are respectively fixedly installed inside the inner ring lower pressure plate 6 and the rotating plate 7. The output end of the control motor 802 is fixedly connected with a double-headed threaded rod 803, and the double-headed threaded rod 803 passes through the inner wall surfaces of the two slide grooves 801 and is rotatably arranged. A slider 804 is slidably installed on the inner wall surface of the slide groove 801, and the slider 804 is symmetrically threadedly installed on the surface of the double-headed threaded rod 803. The inner support block 9 is fixedly installed on the bottom surface of the upper slider 804, and the outer clamping plate 10 is fixedly installed on the surface of the lower slider 804.

[0029] Specifically, the output end of the control motor 802 drives the double-headed threaded rod 803 to rotate, so that the slider 804 symmetrically installed on the surface of the double-headed threaded rod 803 and slidably installed on the inner wall surface of the slide groove 801 moves toward or away from each other synchronously, thereby driving the inner support block 9 or the outer clamping plate 10 to move synchronously, so that the two symmetrically arranged inner support blocks 9 move away from each other to support the inner side of the inner ring of the rolling bearing body 14, and the two symmetrically arranged outer clamping plates 10 move toward each other to clamp and fix the outer side of the outer ring of the rolling bearing body 14.

[0030] The lower sliding block 804 is an L-shaped structure, and the lower double-threaded rod 803 is arranged away from the axis of the rotating plate 7.

[0031] Specifically, by setting the lower double-headed threaded rod 803 away from the axis of the rotating plate 7, the lower double-headed threaded rod 803 is prevented from colliding with the support column 2, and the L-shaped structure of the lower slider 804 is utilized to ensure that the outer clamping plate 10 fixedly mounted on the surface of the slider 804 can move radially along the rotating plate 7.

[0032] The outer ring pressing assembly 12 includes a longitudinal groove 121, which is opened on the relative surfaces of the two outer clamping plates 10. A longitudinal threaded rod 122 is rotatably installed on the bottom surface of the inner wall of the longitudinal groove 121. The longitudinal threaded rod 122 passes through the top surface of the outer clamping plate 10 and is rotatably arranged. A knob 123 is fixedly installed on the top surface of the longitudinal threaded rod 122. An outer ring pressing plate 124 is slidably installed on the inner wall surface of the longitudinal groove 121. The outer ring pressing plate 124 is threadedly installed on the surface of the longitudinal threaded rod 122.

[0033] Specifically, rotating the knob 123 drives the longitudinal threaded rod 122 to rotate, so that the outer ring lower pressure plate 124 that is threadedly installed on the surface of the longitudinal threaded rod 122 and slidably installed on the inner wall surface of the longitudinal groove 121 rises and falls, and then the outer ring lower pressure plate 124 squeezes the top surface of the outer ring of the rolling bearing body 14, thereby further fixing the outer ring of the rolling bearing body 14.

[0034] The rotation drive assembly 13 includes a drive motor 131, which is fixedly installed on the bottom surface of the inner wall of the base 1. The output end of the drive motor 131 is fixedly connected to a rotating shaft 132, and the rotating shaft 132 is rotatably connected to the top wall of the base 1. A driving gear 133 is fixedly installed on the surface of the rotating shaft 132, and a driven gear ring 134 is meshed on the surface of the driving gear 133. The driven gear ring 134 is fixedly sleeved on the outer side of the rotating plate 7.

[0035] Specifically, the output end of the driving motor 131 drives the rotating shaft 132 and the driving gear 133 to rotate, thereby causing the driven gear ring 134 meshing on the surface of the driving gear 133 to rotate, and finally driving the rotating plate 7 fixedly connected to the driven gear ring 134 to rotate, driving the outer ring of the rolling bearing body 14 squeezed and fixed by the outer clamping plate 10 relative to the rotating plate 7 to rotate, thereby performing a wear resistance test.

[0036] The diameters of the inner ring support plate 3 and the inner ring lower pressure plate 6 are the same as the outer diameter of the inner ring of the rolling bearing body 14 .

[0037] Specifically, the inner ring support plate 3 and the inner ring lower pressure plate 6 are used to squeeze and fix the upper and lower sides of the inner ring of the rolling bearing body 14 while avoiding contact with other parts of the rolling bearing body 14. While ensuring that the inner ring is reliably fixed, the normal operation of other parts during the test is ensured.

[0038] In summary: through the action of the distance adjustment component 8, the inner ring and outer ring of the rolling bearing body 14 are squeezed and fixed by the lateral forces applied by the inner support block 9 and the outer clamping plate 10 respectively, while the inner ring is longitudinally squeezed and fixed by the outer ring pressing component 12 and the inner ring support plate 3, and the outer ring is longitudinally squeezed and fixed by the outer ring support plate 11 and the outer ring pressing component 12, so that the inner ring and outer ring of the rolling bearing body 14 are further squeezed and fixed, and the fixation is more reliable and firm, avoiding the increase of the ball friction of the rolling bearing body 14 after multiple rotations, causing the outer ring to slide relative to the outer clamping plate 10 and affecting the accuracy of the test results.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A rolling bearing wear resistance testing device, characterized in that: The invention comprises a base (1), wherein a support column (2) is fixedly installed on the bottom surface of the inner wall of the base (1), the support column (2) is arranged to penetrate the top surface of the base (1), an inner ring support plate (3) is fixedly installed on the top surface of the support column (2), a rolling bearing body (14) is placed on the top surface of the inner ring support plate (3), a gantry (4) is fixedly installed on the top surface of the base (1), an electric telescopic rod (5) is fixedly installed on the bottom surface of the horizontal part of the gantry (4), an inner ring lower pressure plate (6) is fixedly installed on the bottom surface of the telescopic end of the electric telescopic rod (5), and the support column (2 ) is rotatably mounted on the outer side surface, the top surface of the rotating plate (7) and the bottom surface of the inner ring lower pressure plate (6) are both provided with a distance adjustment component (8), an inner support block (9) is fixedly mounted on the surface of the moving part of the upper distance adjustment component (8), an outer clamping plate (10) is fixedly mounted on the surface of the moving part of the lower distance adjustment component (8), an outer ring support plate (11) is fixedly mounted on the bottom surface of the outer clamping plate (10) and an outer ring lower pressure component (12) is provided on the surface, and a rotating drive component (13) for driving the rotating plate (7) to rotate is provided inside the base (1).

2. A rolling bearing wear resistance testing device according to claim 1, characterized in that: The distance adjustment component (8) includes a slide groove (801) and a control motor (802). The distance adjustment component (8) includes two slide grooves (801), and the two slide grooves (801) are symmetrically arranged. The two control motors (802) are respectively fixedly installed inside the inner ring lower pressure plate (6) and the rotating plate (7). The output end of the control motor (802) is fixedly connected with a double-headed threaded rod (803), and the double-headed threaded rod (803) passes through the inner wall surfaces of the two slide grooves (801) and is rotatably arranged. A slider (804) is slidably installed on the inner wall surface of the slide groove (801), and the slider (804) is symmetrically threadedly installed on the surface of the double-headed threaded rod (803). The inner support block (9) is fixedly installed on the bottom surface of the upper slider (804), and the outer clamping plate (10) is fixedly installed on the surface of the lower slider (804).

3. A rolling bearing wear resistance testing device according to claim 2, characterized in that: The slider (804) on the lower side is an L-shaped structure, and the double-headed threaded rod (803) on the lower side is arranged away from the axis of the rotating plate (7).

4. A rolling bearing wear resistance testing device according to claim 1, characterized in that: The outer ring pressing assembly (12) includes a longitudinal groove (121), and the longitudinal groove (121) is opened on the relative surfaces of the two outer clamping plates (10). A longitudinal threaded rod (122) is rotatably installed on the bottom surface of the inner wall of the longitudinal groove (121). The longitudinal threaded rod (122) passes through the top surface of the outer clamping plate (10) and is rotatably arranged. A knob (123) is fixedly installed on the top surface of the longitudinal threaded rod (122). An outer ring pressing plate (124) is slidably installed on the inner wall surface of the longitudinal groove (121), and the outer ring pressing plate (124) is threadedly installed on the surface of the longitudinal threaded rod (122).

5. The rolling bearing wear resistance testing device according to claim 1, characterized in that: The rotation drive assembly (13) comprises a drive motor (131), the drive motor (131) is fixedly mounted on the bottom surface of the inner wall of the base (1), the output end of the drive motor (131) is fixedly connected to a rotating shaft (132), the rotating shaft (132) is rotatably connected to the top wall of the base (1), a driving gear (133) is fixedly mounted on the surface of the rotating shaft (132), a driven gear ring (134) is meshedly arranged on the surface of the driving gear (133), and the driven gear ring (134) is fixedly sleeved on the outer side surface of the rotating plate (7).

6. A rolling bearing wear resistance testing device according to claim 1, characterized in that: The diameters of the inner ring support plate (3) and the inner ring lower pressure plate (6) are the same as the outer diameter of the inner ring of the rolling bearing body (14).

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