A bearing axial play based detection

Abstract

The utility model relates to bearing detection frock technical field discloses a kind of based on bearing axial play detection, including fixed plate, the top of the fixed plate is equipped with clamping assembly, the middle part of the fixed plate is fixedly connected with fixed link, the inside of the fixed link is equipped with lifting assembly, the bottom of the lifting assembly is equipped with detection structure, the bottom of the fixed link is fixedly connected with base, the clamping assembly includes fixed block one, the top of the fixed plate is fixedly connected with the fixed block one, the middle part of the fixed block is rotatably connected with bidirectional screw rod, the outer periphery of the bidirectional screw rod is threadedly connected with clamping block. In the utility model, by starting motor one drive bidirectional screw rod rotation, drive clamping block relative movement and be clamped and fixed to bearing outer ring, different model bearing outer ring size is different, and the clamping block of movement realizes the fixing stability of different model bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing tooling technology, and in particular to a method for detecting bearing axial clearance. Background Technology

[0002] Axial clearance testing of bearings refers to measuring the relative movement of the inner and outer rings of a bearing in the axial direction using specific methods. Excessive axial clearance can lead to increased vibration and noise during operation, while insufficient clearance may result in increased frictional heat generation. Clearance testing is an important step in ensuring the reliability of bearing installation and use.

[0003] Axial clearance testing typically involves fixing the bearing on a testing platform, ensuring that one end of the inner or outer ring is positioned, placing the dial indicator probe against the center of the end face of the outer or inner ring, zeroing the dial indicator, and then pushing or pulling the outer or inner ring axially to observe the range of the dial indicator pointer's swing and record the axial clearance value.

[0004] Different bearing models have different outer ring sizes. When testing bearings, the bearings are fixed on the testing platform. Common testing equipment cannot quickly fix bearings of different models. Usually, it is necessary to change different fixtures or change to suitable testing equipment, which affects work efficiency. Therefore, a bearing axial clearance detection method is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a bearing axial clearance detection method, which aims to improve the problem in the prior art that different bearing models have different outer ring sizes, making it impossible to quickly fix different bearing models.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bearing axial clearance detection method includes a fixed plate, a clamping assembly mounted on the top of the fixed plate, a fixed rod fixedly connected to the middle of the fixed plate, a lifting assembly mounted inside the fixed rod, a sliding rod mounted on the outside of the lifting assembly, a detection structure mounted at the bottom of the sliding rod, and a base fixedly connected to the bottom of the fixed rod.

[0008] The clamping assembly includes a fixing block 1, which is fixedly connected to the top of the fixing plate. A bidirectional threaded rod is rotatably connected to the middle of the fixing block, and the slide rod is threadedly connected to the outer periphery of the threaded rod 1.

[0009] As a further description of the above technical solution:

[0010] The lifting assembly includes a threaded rod, which is rotatably connected inside the fixed rod, and a sliding rod is threadedly connected to the outer circumference of the threaded rod.

[0011] As a further description of the above technical solution:

[0012] The detection structure includes a telescopic component and a snap-fit ​​component. The telescopic component includes a dial indicator, which is installed in the middle of the slide rod. An electric push rod is fixedly connected to the bottom of the slide rod. A second fixing block is fixedly connected to the bottom of the electric push rod. A pressure block is slidably connected to the middle of the second fixing block. The bottom of the dial indicator is in close contact with the top of the second fixing block.

[0013] As a further description of the above technical solution:

[0014] The snap-fit ​​assembly includes a fixed shell, which is fixedly connected to the outside of the second fixed block. A snap-fit ​​block is slidably connected to the middle of the fixed shell, and a spring is installed inside the fixed shell.

[0015] As a further description of the above technical solution:

[0016] The outer side of the pressure block is provided with a slot, and the pressure block engages with the slot;

[0017] As a further description of the above technical solution:

[0018] Motor 2 is fixedly connected to the outside of the fixed rod, and threaded rod 1 is fixedly connected to the output end of motor 2;

[0019] As a further description of the above technical solution:

[0020] The top of the fixed plate is fixedly connected to a motor, and the bidirectional threaded rod is fixedly connected to the output end of the motor.

[0021] As a further description of the above technical solution:

[0022] A pull ring is installed on the outside of the card block.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the starting motor drives the bidirectional threaded rod to rotate, which in turn moves the clamping block to clamp and fix the outer ring of the bearing. Different models of bearings have different outer ring sizes, and the moving clamping block achieves stable fixing of different models of bearings.

[0025] 2. In this utility model, the starting motor drives the threaded rod to rotate, which in turn moves the slide rod. The moving slide rod causes the pressure block to move down to the inner ring surface of the bearing, driving the electric push rod to press down the pressure block. The dial indicator, which is close to the top of the fixed block, measures the axial clearance of the bearing by the pressing distance of the pressure block.

[0026] 3. In this utility model, by pulling the pull ring, the locking block is squeezed by the spring, which separates the locking block from the locking groove and the pressure block can be removed. For different models of bearings, the inner ring size is also different. Replacing the appropriate pressure block ensures the accuracy of the bearing axial clearance data. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of a bearing axial clearance detection method proposed in this utility model.

[0028] Figure 2 This is a schematic diagram of the structure of a fixing plate based on bearing axial clearance detection proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of a clamping assembly based on bearing axial clearance detection proposed in this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of a lifting assembly based on bearing axial clearance detection proposed in this utility model;

[0031] Figure 5 This is a schematic diagram of the snap-fit ​​assembly based on bearing axial clearance detection proposed in this utility model.

[0032] Legend:

[0033] 1. Fixing plate; 2. Motor 1; 3. Fixing block 1; 4. Clamping block; 5. Two-way threaded rod; 6. Fixing rod; 7. Motor 2; 8. Threaded rod 1; 9. Slide rod; 10. Dial indicator; 11. Electric push rod; 12. Fixing block 2; 13. Pressure block; 14. Fixing shell; 15. Clamping block; 16. Spring; 17. Pull ring; 18. Slot; 19. Base. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-3This utility model provides an embodiment of a bearing axial clearance detection method, comprising a fixed plate 1 that supports a top structure. A clamping assembly is installed on the top of the fixed plate 1 to clamp and fix the outer ring of the bearing. A fixed rod 6 is fixedly connected to the middle of the fixed plate 1, which supports and fixes the fixed plate 1 to make the structure more stable. A lifting assembly is installed inside the fixed rod 6, and a sliding rod 9 is installed on the outside of the lifting assembly. The lifting assembly drives the sliding rod 9 to move up and down. A detection structure is installed at the bottom of the sliding rod 9, which moves to detect the bearing. A base 19 is fixedly connected to the bottom of the fixed rod 6, which supports the detection equipment. The clamping assembly includes a fixing block 3, which is fixedly connected to the top of the fixing plate 1. A bidirectional threaded rod 5 is rotatably connected to the middle of the fixing block 3. A motor 2 is fixedly connected to the top of the fixing plate 1. The bidirectional threaded rod 5 is fixedly connected to the output end of the motor 2. A clamping block 4 is threadedly connected to the outer circumference of the bidirectional threaded rod 5. When the motor 2 is started, the bidirectional threaded rod 5 is driven to rotate. The rotation of the bidirectional threaded rod 5 drives the two clamping blocks 4 to move relative to each other, thereby fixing and clamping the outer ring of the bearing. The outer ring size of different bearing models is different. The moving clamping blocks 4 achieve the fixed stability of different bearing models.

[0036] Reference Figures 1-4 The lifting assembly includes a threaded rod 8. A motor 7 is fixedly connected to the outside of the fixed rod 6. The threaded rod 8 is fixedly connected to the output end of the motor 7. When the motor 7 is started, it drives the threaded rod 8 to rotate. The threaded rod 8 is rotatably connected to the inside of the fixed rod 6. A slide rod 9 is threadedly connected to the outer circumference of the threaded rod 8. The rotating threaded rod 8 drives the slide rod 9 to move up and down. The slide rod 9 drives the detection structure to move to detect the bearing. The detection structure includes a telescopic assembly and a snap-fit ​​assembly. The telescopic assembly includes a dial indicator 10. The dial indicator 10 contains components such as a probe, gears, and pointers, all of which are existing technologies and are not improvements of this application. They will not be described in detail here. The dial indicator 10 is installed in the middle of the slide rod 9 and moves together with the slide rod 9. An electric push rod 11 is fixedly connected to the bottom of the slide rod 9, and a fixed block 12 is fixedly connected to the bottom of the electric push rod 11. The electric push rod 11 is activated to push the fixed block 12 to move. A pressure block 13 is slidably connected to the middle of the fixed block 12. First, the slide rod 9 drives the detection structure to move down, so that the pressure block 13 contacts the inner ring of the bearing. The dial indicator 10 is zeroed. Then, the electric push rod 11 is activated to push the fixed block 12 to move, so that the pressure block 13 presses down on the inner ring of the bearing. The bottom of the dial indicator 10 is in close contact with the top of the fixed block 12. Under the action of the internal spring, the probe of the dial indicator 10 is in close contact with the top of the fixed block 12. The distance of the moving fixed block 12 is measured, and the measured value is the axial clearance value of the bearing.

[0037] Reference Figure 1 , Figure 3 , Figure 5The snap-fit ​​assembly includes a fixed housing 14, which protects the internal structure and reduces the impact of the external environment on the structure. The fixed housing 14 is fixedly connected to the outside of the fixed block 12. A snap-fit ​​block 15 is slidably connected to the middle of the fixed housing 14. A pull ring 17 is installed on the outside of the snap-fit ​​block 15. Pulling the pull ring 17 causes the snap-fit ​​block 15 to slide. A spring 16 is installed inside the fixed housing 14. The sliding snap-fit ​​block 15 compresses the spring 16. A snap-fit ​​groove 18 is opened on the outside of the pressure block 13. The snap-fit ​​block 15 and the snap-fit ​​block 12 are connected. The groove 18 is engaged. Different bearing models have different inner ring sizes, so it is necessary to replace the appropriate size pressure block 13. By pulling the pull ring 17, the locking block 15 is squeezed against the spring 16, causing the locking block 15 to separate from the groove 18. The pressure block 13 can then be removed. After replacing it with a suitable pressure block 13, the pull ring 17 is released, and the locking block 15 rebounds under the action of the spring 16 and engages with the groove 18, thus fixing the pressure block 13 securely. A suitable pressure block 13 ensures the accuracy of the bearing axial clearance test data.

[0038] Working principle: First, start the motor 2 to drive the bidirectional threaded rod 5 to rotate. The rotation of the bidirectional threaded rod 5 drives the two clamping blocks 4 to move relative to each other, and fix and clamp the outer ring of the bearing. Different models of bearings have different outer ring sizes. The moving clamping blocks 4 achieve the fixation and stability of different models of bearings.

[0039] Then, by pulling the pull ring 17, the locking block 15 is pressed against the spring 16, causing the locking block 15 to separate from the slot 18. The pressure block 13 can then be removed, and a suitable pressure block 13 can be replaced. After releasing the pull ring 17, the locking block 15 rebounds under the action of the spring 16 and engages with the slot 18, thus fixing and stabilizing the pressure block 13. A suitable pressure block 13 ensures the accuracy of the bearing axial clearance detection data.

[0040] The motor 7 drives the threaded rod 8 to rotate. The rotating threaded rod 8 drives the slide rod 9 to move downward. The slide rod 9 moves the detection structure downward, so that the pressure block 13 contacts the inner ring of the bearing. The dial indicator 10 is zeroed. Then, the electric push rod 11 is started to push the fixed block 12 to move, so that the pressure block 13 presses down on the inner ring of the bearing. The bottom of the dial indicator 10 is in close contact with the top of the fixed block 12. Under the action of the internal spring, the probe of the dial indicator 10 is in close contact with the top of the fixed block 12. The distance of the downward-moving fixed block 12 is detected, and the detected value is the axial clearance value of the bearing.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bearing axial clearance detection method, comprising a fixed plate (1), characterized in that: A clamping assembly is installed on the top of the fixing plate (1), a fixing rod (6) is fixedly connected to the middle of the fixing plate (1), a lifting assembly is installed inside the fixing rod (6), a sliding rod (9) is installed on the outside of the lifting assembly, a detection structure is installed at the bottom of the sliding rod (9), and a base (19) is fixedly connected to the bottom of the fixing rod (6). The clamping assembly includes a fixing block (3), which is fixedly connected to the top of the fixing plate (1). A bidirectional threaded rod (5) is rotatably connected to the middle of the fixing block (3), and a clamping block (4) is threadedly connected to the outer periphery of the bidirectional threaded rod (5).

2. The method for detecting bearing axial clearance according to claim 1, characterized in that: The lifting assembly includes a threaded rod (8), which is rotatably connected inside the fixed rod (6), and the slide rod (9) is threadedly connected to the outer periphery of the threaded rod (8).

3. The method for detecting bearing axial clearance according to claim 2, characterized in that: The detection structure includes a telescopic component and a snap-fit ​​component. The telescopic component includes a dial indicator (10). The dial indicator (10) is installed in the middle of the slide rod (9). An electric push rod (11) is fixedly connected to the bottom of the slide rod (9). A fixing block two (12) is fixedly connected to the bottom of the electric push rod (11). A pressure block (13) is slidably connected to the middle of the fixing block two (12). The bottom of the dial indicator (10) is in close contact with the top of the fixing block two (12).

4. The method for detecting bearing axial clearance according to claim 3, characterized in that: The snap-fit ​​assembly includes a fixed shell (14), which is fixedly connected to the outside of the second fixed block (12). A snap-fit ​​block (15) is slidably connected to the middle of the fixed shell (14), and a spring (16) is installed inside the fixed shell (14).

5. The method for detecting bearing axial clearance according to claim 4, characterized in that: The outer side of the pressure block (13) is provided with a slot (18), and the locking block (15) engages with the slot (18).

6. The method for detecting bearing axial clearance according to claim 2, characterized in that: The outer side of the fixed rod (6) is fixedly connected to the motor two (7), and the threaded rod one (8) is fixedly connected to the output end of the motor two (7).

7. The method for detecting bearing axial clearance according to claim 1, characterized in that: The top of the fixed plate (1) is fixedly connected to the motor (2), and the bidirectional threaded rod (5) is fixedly connected to the output end of the motor (2).

8. The method for detecting bearing axial clearance according to claim 4, characterized in that: A pull ring (17) is installed on the outside of the card block (15).

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