A turntable bearing load testing device

Abstract

The present application discloses a turntable bearing load testing device, including a bracket, a rotating shaft, a connecting column, a first chuck, a lifting cylinder, and a second chuck. The rotating shaft is fixedly connected to the connecting column, and the two are perpendicular to each other. The axis of the rotating shaft is horizontal. The rotating shaft is rotatably connected to the bracket. The connecting column is connected to an angle adjustment drive component that drives it to rotate around the rotating shaft. One end of the connecting column is fixedly connected to the first chuck. The present application fastens the inner and outer rings of the bearing through the chuck, and then drives the inner ring of the bearing to rotate by driving the chuck to simulate the working state of the bearing. At the same time, the angle of the chuck is adjusted to simulate the overturning moment, and pressure is applied to the inner ring of the bearing to simulate the axial load. The radial load is simulated by driving the chuck that fastens the inner ring of the bearing to translate, so as to simulate the complex conditions in actual use. Obtaining these data enables R&D personnel to make judgments based on the data to improve the bearing performance and extend the bearing life.

Description

Technical Field

[0001] The present application relates to the technical field of turntable bearing testing, and in particular to a turntable bearing load testing device. Background Art

[0002] Slewing bearings are a type of bearing with a special structure that can simultaneously withstand the combined effects of radial load, axial load and overturning moment. They are widely used in the slewing devices of mechanical systems such as lifting, metallurgy, mining, construction, ports and wind power. Slewing bearings usually rotate under heavy load conditions, so obtaining these load data is the basis for testing the bearing life.

[0003] The existing experimental test system for turntable bearings mainly tests the single load of the turntable bearings. There is no device for synchronous testing of radial load, axial load and overturning moment, so it cannot simulate the complex conditions in actual use. Summary of the invention

[0004] The purpose of this application is to provide a turntable bearing load testing device in order to solve the above-mentioned problem, which can simulate radial load, axial load and overturning moment to detect the turntable bearing, so as to simulate the complex conditions in actual use. Obtaining these data enables R&D personnel to make judgments based on the data to improve bearing performance and extend bearing life.

[0005] This application achieves the above objectives through the following technical solutions:

[0006] A turntable bearing load testing device comprises a bracket, a rotating shaft, a connecting column, a first chuck, a lifting cylinder, and a second chuck. The rotating shaft is fixedly connected to the connecting column and the two are perpendicular to each other. The axis of the rotating shaft is horizontal. The rotating shaft is rotationally connected to the bracket. The connecting column is connected to an angle adjustment drive component that drives it to rotate around the rotating shaft. One end of the connecting column is fixedly connected to the first chuck. The lifting cylinder is arranged on the top of the bracket, and the lifting cylinder is connected to a linear drive component that drives it to translate. The telescopic end of the lifting cylinder is connected to a rotation drive component for driving the second chuck to rotate. The second chuck and the first chuck are respectively configured to tighten the inner ring and outer ring of the bearing.

[0007] Furthermore, the angle adjustment drive assembly includes a semicircular block, a support, an angle adjustment cylinder, and a rack. The two ends of the connecting column are connected to the rotating shaft, and the end of the connecting column away from the first chuck is fixedly connected to the semicircular block. The support is fixedly connected to the bracket for supporting the support. The support is arranged horizontally, and the telescopic end of the support is fixedly connected to the rack. The arc surface of the semicircular block is provided with teeth adapted to the rack and meshes with the rack.

[0008] Furthermore, the linear drive assembly includes a linear slide and a slider, the slider is fixedly connected to the lifting cylinder, a slide groove for the slider to slide is arranged on the top of the bracket, a linear slide is arranged on the top of the bracket, and the moving part of the linear slide is fixedly connected to the slider.

[0009] Furthermore, the rotary drive assembly includes a shell and a connecting shaft, the shell is fixedly connected to the telescopic end of the lifting cylinder, the connecting shaft is rotationally connected to the shell, and one end of the connecting shaft is fixedly connected to the second chuck.

[0010] Furthermore, the rotary drive assembly also includes a motor, a driving bevel gear and a driven bevel gear, the motor is fixedly connected to the housing, and the output shaft is provided with a driving bevel gear, the driven bevel gear is fixedly connected to the connecting shaft, and the driven bevel gear is meshed with the driving bevel gear.

[0011] Furthermore, the second chuck and the first chuck are symmetrically distributed up and down and are coaxial with each other to facilitate the placement of bearings, tightening and application of loads.

[0012] Further, the lifting cylinder is arranged vertically to be able to drive the housing and the second chuck to lift vertically.

[0013] Compared with the prior art, the present application uses a chuck to fasten the inner and outer rings of the bearing, and then drives the chuck to drive the inner ring of the bearing to rotate, simulating the working state of the bearing. At the same time, the angle of the chuck is adjusted to simulate the overturning moment, and pressure is applied to the inner ring of the bearing to simulate the axial load. The radial load is simulated by driving the chuck that fastens the inner ring of the bearing to translate, so as to simulate the complex conditions in actual use. Obtaining these data enables R&D personnel to make judgments based on the data to improve bearing performance and extend bearing life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application but do not constitute a limitation to the present application. In the accompanying drawings:

[0015] Figure 1 It is the first structural schematic diagram of this application;

[0016] Figure 2 It is a second structural schematic diagram of the present application;

[0017] Figure 3 It is a schematic diagram of the structure of the rotary drive assembly of the present application.

[0018] The following are the descriptions of the reference numerals:

[0019] 1. Bracket; 2. Rotating shaft; 3. Connecting column; 4. First chuck; 5. Semicircular block; 6. Support; 7. Angle adjustment cylinder; 8. Rack; 9. Lifting cylinder; 10. Housing; 11. Second chuck; 12. Motor; 13. Active bevel gear; 14. Driven bevel gear; 15. Linear slide; 16. Slider; 17. Connecting shaft; 18. Slide groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0021] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 , and is only for the convenience of describing the present application and simplifying the description, and does 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 limiting the present application.

[0022] like Figure 1-3 As shown, a turntable bearing load testing device includes a bracket 1, a rotating shaft 2, a connecting column 3, a first chuck 4, a lifting cylinder 9, and a second chuck 11. The rotating shaft 2 is fixedly connected to the connecting column 3, and the two are perpendicular to each other. The axis of the rotating shaft 2 is horizontal, the rotating shaft 2 is rotationally connected to the bracket 1, the connecting column 3 is connected to an angle adjustment drive component that drives it to rotate around the rotating shaft 2, one end of the connecting column 3 is fixedly connected to the first chuck 4, the lifting cylinder 9 is arranged on the top of the bracket 1, and the lifting cylinder 9 is connected to a linear drive component that drives it to translate, the telescopic end of the lifting cylinder 9 is connected to a rotation drive component for driving the second chuck 11 to rotate, and the second chuck 11 and the first chuck 4 are respectively configured to tighten the inner ring and outer ring of the bearing.

[0023] Specifically, in order to utilize the connecting column 3 to drive the rotating shaft 2 to rotate, the rotating shaft 2 supports the connecting column 3 to rotate, and the connecting column 3 supports the first chuck 4. The second chuck 11 is driven to rise and fall away from or close to the first chuck 4 through the lifting cylinder 9. The inner ring of the bearing is fixed by the second chuck 11, and the outer ring of the bearing is clamped by the first chuck 4. Then the rotating driving assembly supports and drives the second chuck 11 to rotate, and then the inner ring of the bearing rotates, simulating the working state of the bearing.

[0024] Furthermore, the angle adjustment drive assembly includes a semicircular block 5, a support 6, an angle adjustment cylinder 7, and a rack 8. The two ends of the connecting column 3 are connected to the rotating shaft 2, and the end of the connecting column 3 facing away from the first chuck 4 is fixedly connected to the semicircular block 5. The support 6 is fixedly connected to the bracket 1 for supporting the support 6. The support 6 is arranged horizontally, and the telescopic end of the support 6 is fixedly connected to the rack 8. The arc surface of the semicircular block 5 is provided with teeth adapted to the rack 8 and meshes with the rack 8.

[0025] Specifically, the arc surface of the semicircular block 5 takes the rotation axis of the rotating shaft 2 as the center, and the angle adjustment cylinder 7 is started to extend and retract to drive the rack 8 to shift, so that the rack 8 is engaged with the gear on the semicircular block 5, driving the semicircular block 5 to rotate around the rotating shaft 2, generating an overturning moment to simulate the overturning load.

[0026] Furthermore, the linear drive assembly includes a linear slide 15 and a slider 16, the slider 16 is fixedly connected to the lifting cylinder 9, a slide groove 18 for the slider 16 to slide is provided at the top of the bracket 1, and a linear slide 15 is provided at the top of the bracket 1, and a moving part of the linear slide 15 is fixedly connected to the slider 16.

[0027] Specifically, the linear slide 15 drives the moving end to move, and then the slider 16 moves, and the lifting cylinder 9 moves following the slider 16, so that the second chuck 11 moves along, and the second chuck 11 generates radial force to simulate radial load on the bearing.

[0028] Furthermore, the rotary drive assembly includes a shell 10 and a connecting shaft 17 , the shell 10 is fixedly connected to the telescopic end of the lifting cylinder 9 , the connecting shaft 17 is rotationally connected to the shell 10 , and one end of the connecting shaft 17 is fixedly connected to the second chuck 11 .

[0029] Specifically, the housing 10 supports the rotation of the connecting shaft 17, and further supports the second chuck 11, and the housing 10 is driven by the lifting cylinder 9 to be raised and lowered, and further the second chuck 11 is raised and lowered.

[0030] Furthermore, the rotary drive assembly also includes a motor 12, a driving bevel gear 13 and a driven bevel gear 14, the motor 12 is fixedly connected to the housing 10, and the output shaft is provided with a driving bevel gear 13, the driven bevel gear 14 is fixedly connected to the connecting shaft 17, and the driven bevel gear 14 is meshed with the driving bevel gear 13.

[0031] Specifically, the motor 12 drives the active bevel gear 13 to rotate, the active bevel gear 13 meshes to drive the driven bevel gear 14 to rotate, the driven bevel gear 14 drives the connecting shaft 17 to rotate, and then the second chuck 11 rotates, so that the inner ring of the bearing fixed to the second chuck 11 rotates.

[0032] Furthermore, the second chuck 11 and the first chuck 4 are symmetrically distributed up and down and are coaxial with each other to facilitate the placement of bearings, tightening and application of loads.

[0033] Specifically, the jaws of the second chuck 11 and the first chuck 4 face each other, which makes it easy to place the bearing on the first chuck 4 and then tighten the inner and outer rings of the bearing.

[0034] Further, the lifting cylinder 9 is arranged vertically to be able to drive the housing 10 and the second chuck 11 to vertically lift and lower.

[0035] In the above structure, the bearing to be tested is placed on the first chuck 4, and then the first chuck 4 is used to clamp the outer ring of the bearing, the lifting cylinder 9 is started to extend and retract to drive the second chuck 11 to descend, and then the second chuck 11 is used to expand and fix the inner ring of the bearing, and then the motor 12 is started to drive the active bevel gear 13 to rotate, and the active bevel gear 13 is engaged to drive the driven bevel gear 14 to rotate, and the driven bevel gear 14 drives the connecting shaft 17 to rotate, and then the second chuck 11 rotates to rotate the inner ring of the bearing to simulate the operation of the bearing. At the same time, the lifting cylinder 9 can continue to apply pressure to simulate the axial load of the bearing, and the angle adjustment cylinder 7 is started to extend and retract to drive the rack 8 to deviate, so that the rack 8 is engaged with the gear on the semicircular block 5, and the semicircular block 5 is driven to rotate around the rotating shaft 2, generating an overturning moment to simulate the overturning load, and the linear slide 15 is started to drive the slider 16 to translate, so that the second chuck 11 follows the translation to simulate the radial load, so that the bearing fatigue test is carried out by simulating the axial load, the overturning load and the radial load.

[0036] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected. The scope of protection claimed in the present application is defined by the attached claims and their equivalents.

Claims

1. A turntable bearing load testing device, characterized in that: The invention comprises a support (1), a rotating shaft (2), a connecting column (3), a first chuck (4), a lifting cylinder (9), and a second chuck (11), wherein the rotating shaft (2) and the connecting column (3) are fixedly connected and are perpendicular to each other, the axis of the rotating shaft (2) is horizontal, the rotating shaft (2) and the support (1) are rotationally connected, the connecting column (3) is connected to an angle adjustment drive component for driving the connecting column to rotate around the rotating shaft (2), one end of the connecting column (3) is fixedly connected to the first chuck (4), the lifting cylinder (9) is arranged on the top of the support (1), and the lifting cylinder (9) is connected to a linear drive component for driving the lifting cylinder to translate, the telescopic end of the lifting cylinder (9) is connected to a rotation drive component for driving the second chuck (11) to rotate, and the second chuck (11) and the first chuck (4) are respectively configured as the inner ring and the outer ring of the fastening bearing.

2. A turntable bearing load testing device according to claim 1, characterized in that: The angle adjustment drive assembly comprises a semicircular block (5), a support (6), an angle adjustment cylinder (7), and a rack (8); the two ends of the connecting column (3) are connected to the rotating shaft (2); and the end of the connecting column (3) away from the first chuck (4) is fixedly connected to the semicircular block (5); the support (6) is fixedly connected to the bracket (1) for supporting the support (6); the support (6) is arranged horizontally, and the telescopic end of the support (6) is fixedly connected to the rack (8); and the arc surface of the semicircular block (5) is provided with teeth adapted to the rack (8) and meshes with the rack (8).

3. A turntable bearing load testing device according to claim 1, characterized in that: The linear drive assembly comprises a linear slide (15) and a slider (16); the slider (16) is fixedly connected to the lifting cylinder (9); a slide groove (18) for the slider (16) to slide is arranged at the top of the bracket (1); a linear slide (15) is arranged at the top of the bracket (1); and a moving part of the linear slide (15) is fixedly connected to the slider (16).

4. A turntable bearing load testing device according to claim 1, characterized in that: The rotary drive assembly comprises a housing (10) and a connecting shaft (17); the housing (10) is fixedly connected to the telescopic end of the lifting cylinder (9); the connecting shaft (17) is rotationally connected to the housing (10); and one end of the connecting shaft (17) is fixedly connected to the second chuck (11).

5. A turntable bearing load testing device according to claim 4, characterized in that: The rotary drive assembly further comprises a motor (12), a driving bevel gear (13) and a driven bevel gear (14); the motor (12) is fixedly connected to the housing (10), and the output shaft is provided with the driving bevel gear (13); the driven bevel gear (14) is fixedly connected to the connecting shaft (17), and the driven bevel gear (14) is meshed with the driving bevel gear (13).

6. A turntable bearing load testing device according to claim 1, characterized in that: The second chuck (11) and the first chuck (4) are symmetrically distributed up and down and are coaxial with each other to facilitate the placement of bearings, tightening and application of loads.

7. A turntable bearing load testing device according to claim 4, characterized in that: The lifting cylinder (9) is arranged vertically so as to be able to drive the housing (10) and the second chuck (11) to lift vertically.

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