Bearing vibration detection device

Abstract

The utility model relates to a bearing vibration detection device in the technical field of bearing detection, which comprises a machine body, a rotating table is arranged in the middle of a horizontal workbench of the machine body, and at least three radial chutes are distributed on the upper surface of the rotating table at equal angles; the positioning supporting blocks are slidably connected into the radial sliding grooves, and first slopes are arranged on the inner sides of the positioning supporting blocks; the magnetic attraction supporting block is magnetically attracted to the upper table surface of the rotating table, a second inclined surface matched with the first inclined surface is arranged on the outer side of the magnetic attraction supporting block, and the magnetic attraction supporting block is matched with the first inclined surface to outwards push the positioning supporting block to clamp the bearing inner ring; according to the utility model, through the matching of the inclined surfaces of the magnetic support block and the positioning support block, the automatic clamping of the bearing inner ring can be realized without replacing the rotating shaft, the complex mechanical structure of the traditional diameter adjusting assembly for the inner ring is omitted, and the clamping time is obviously shortened.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing technology, and in particular to a bearing vibration testing device. Background Technology

[0002] Bearings are primarily used to support rotating mechanical parts and are crucial components in mechanical equipment. The installation of bearings reduces friction during operation, thus minimizing wear and tear on components and saving energy. After production, bearings must undergo testing before sale. One step in this process is bearing vibration testing. The inner or outer ring of the bearing is fixed to a rotating shaft, while the outer or inner ring is mounted on a test bench. The shaft rotates the inner or outer ring, and its vibration is detected.

[0003] Existing Chinese patent CN115235771B discloses a bearing vibration testing device, but it cannot adapt to bearings with different inner ring diameters when performing vibration testing. To test bearings with different inner ring diameters, the rotating shaft needs to be disassembled and replaced, which is cumbersome. To address this, existing Chinese patent CN117309400B discloses a bearing vibration testing device. Specifically, through a diameter adjustment component, rotating the main body of the adjustment disc drives a sliding rod to roughly adjust the diameter on a limiting disc. Once the diameter is adjusted close to the inner wall of the bearing inner ring, a fine-tuning component further adjusts it. Under the elastic force of a spring, the round rod is tightly fitted against the inner wall of the bearing inner ring. Tightening the positioning screw A positions the moving plate. After diameter adjustment, the positioning block engages with the limiting device on the power component to lock the adjustment disc, maintaining the current diameter. Once locked, the adjustment disc rotates the bearing inner ring on the fine-tuning component. Although the device can adapt to different types of bearings, the structure and operation of the diameter adjustment component are relatively complex, which is not conducive to improving the testing efficiency. Furthermore, when tightening the positioning screw A, an outward force needs to be applied to the round rod during the tightening process. Otherwise, the round rod will cause the spring to be squeezed and shifted, resulting in the inner ring of the bearing not being firmly fixed, or even the bearing and the output shaft of the drive motor being out of axis, which will affect the testing results.

[0004] To address this, we designed a bearing vibration detection device. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model discloses a bearing vibration detection device.

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

[0007] A bearing vibration detection device, comprising:

[0008] The machine body has a rotating platform in the middle of its horizontal worktable, and at least three radial grooves are distributed at equal angles on the surface of the rotating platform.

[0009] The positioning support block is slidably connected in each radial groove, and its inner side is provided with a first inclined surface;

[0010] The magnetic support block is magnetically attached to the table surface of the rotating platform. Its outer side is provided with a second inclined surface that cooperates with the first inclined surface. The positioning support block is pushed outward in cooperation with the first inclined surface to clamp the inner ring of the bearing.

[0011] The telescopic device is fixed above the machine body, and its telescopic end is connected to the pressing frame. The bottom of the pressing frame is provided with at least three pressing plates distributed at equal angles. The lower surface of each pressing plate is a sloping structure, which is used to press the outer ring of the bearing.

[0012] The detector, mounted on the machine body, is used to detect bearing vibration signals.

[0013] Furthermore, the slope angle of the slope structure is 30°~50°.

[0014] Furthermore, the magnetic support block includes an annular electromagnet, and the annular electromagnet has multiple wedge-shaped blocks at equal angles on its periphery that correspond one-to-one with the positioning support block. The outer surface of the wedge-shaped block is a second inclined surface that cooperates with the first inclined surface.

[0015] Furthermore, the pressing frame includes a top plate, three lower support plates distributed at equal angles along the circumference of the top plate, and a pressing plate connecting the lower support plates and the top plate; and the projection range of the pressing plate avoids the wedge block.

[0016] Furthermore, the lower support plate is an arc-shaped elastic steel plate, and the inner end of the pressing plate is correspondingly hinged.

[0017] Furthermore, the top plate includes an inner plate, an outer ring, and three connecting rods connecting the inner plate and the outer ring. The diameter of the inner plate is smaller than the diameter of the annular electromagnet, and the inner end of the pressing plate is correspondingly connected to the inner end of the corresponding connecting rod.

[0018] Furthermore, a guide post is vertically provided in the middle of the platform of the rotating platform, which cooperates with the guide hole at the bottom of the magnetic support block to limit the radial displacement of the magnetic support block.

[0019] Furthermore, the bottom of the positioning block is provided with an outward extension for supporting the end face of the bearing inner ring.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. By using the inclined surfaces of the magnetic support block and the positioning support block, the bearing inner ring can be automatically clamped without replacing the rotating shaft, and the complex mechanical structure of the traditional inner ring diameter adjustment component is eliminated, significantly shortening the clamping time.

[0022] 2. The pressing frame uses a lower support plate and an inclined pressing plate made of arc-shaped elastic steel plate. The bearing outer ring can be evenly fixed by the vertical pressing of the telescopic equipment, eliminating the complex mechanical structure of the traditional outer ring diameter adjustment assembly and further significantly shortening the clamping time.

[0023] 3. The guide column in the middle of the rotating table cooperates with the guide hole at the bottom of the magnetic support block to effectively limit the radial displacement of the magnetic support block; at the same time, the extension supports the inner ring end face of the bearing. The dual positioning mechanism ensures that the bearing and the rotating table are strictly coaxial, avoiding vibration data deviation caused by clamping eccentricity. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a structural diagram of the present invention in use;

[0026] Figure 3 This is an exploded structural diagram of the rotating platform, positioning support block, and magnetic support block in this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the pressure frame in this utility model;

[0028] Figure 5 This is a top view of the rotating platform, positioning support block, magnetic support block, and pressing frame in this utility model;

[0029] Figure 6 for Figure 5 AA sectional view.

[0030] In the diagram: 1. Machine body; 11. Horizontal worktable; 2. Rotary table; 21. Radial groove; 22. Guide column; 3. Positioning support block; 31. First inclined surface; 32. Extension; 4. Magnetic support block; 401. Ring electromagnet; 402. Wedge block; 41. Second inclined surface; 42. Guide hole; 5. Telescopic device; 6. Pressing frame; 61. Pressing plate; 62. Top plate; 621. Inner plate; 622. Outer ring; 623. Connecting rod; 63. Lower support plate; 7. Detector. Detailed Implementation

[0031] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0032] Example 1, in conjunction with Appendix Figure 1-6 A bearing vibration detection device, comprising:

[0033] A rotating platform 2 is fixedly mounted on the middle of the horizontal worktable 11 of the machine body 1 via bearings. Three radial grooves 21 are evenly distributed along the circumference of the upper surface of the rotating platform 2, extending outwards from the center of the rotating platform. A guide post 22 is vertically provided in the middle of the rotating platform 2 to limit the radial displacement of the magnetic support block 4.

[0034] It should be noted that the rotary table 2 has a drive motor (not shown) that drives its rotation. Specifically, the drive motor is fixedly installed at the bottom of the horizontal worktable 11, and its output shaft is driven to the rotary table 2.

[0035] Each radial groove 21 is slidably connected to a positioning support block 3. The inner side of the positioning support block 3 is provided with a first inclined surface 31, and the bottom is provided with an outwardly extending extension 32, that is, the extension 32 is used to support the end face of the inner ring of the bearing. Specifically, the top surface of the extension 32 is higher than the upper surface of the rotating table 2.

[0036] The magnetic support block 4 is magnetically attached to the upper surface of the rotating platform 2, and its outer side is provided with a second inclined surface 41 that cooperates with the first inclined surface 31.

[0037] It should be noted that during operation, the magnetic support block 4 may not necessarily be in contact with the upper surface of the rotating table 2. That is, depending on the different inner diameters of the bearing inner ring, the bottom surface of the magnetic support block 4 and the upper surface of the rotating table 2 will have different distances.

[0038] Specifically, the magnetic support block 4 includes an annular electromagnet 401 and three wedge-shaped blocks 402 distributed at equal angles around the circumference. The outer surface of the wedge-shaped blocks 402 is a second inclined surface 41. When the electromagnet is energized and attracts the magnetic support block, the second inclined surface 41 cooperates with the first inclined surface 31, pushing the positioning support block 3 to slide outward along the radial groove 21, thereby clamping the inner ring of the bearing. The guide post 22 cooperates with the guide hole 42 at the bottom of the magnetic support block 4 to ensure that the magnetic support block 4 is centered.

[0039] Preferably, a tungsten carbide wear-resistant coating is sprayed onto the first inclined surface 31 and the second inclined surface 41 to reduce frictional wear during long-term use and extend the service life of the component.

[0040] Depending on the requirements, the cross-section of the guide post 22 may be non-circular, for example, the guide post 22 may be a prism or a cylinder with a guide groove.

[0041] The telescopic device 5 is fixed above the body 1, and its telescopic end is connected to the pressing frame 6. The pressing frame 6 includes a top plate 62, three lower support plates 63 made of arc-shaped elastic steel plates, and pressing plates 61 connecting the lower support plates 63 and the top plate 62. The lower surface of each pressing plate 61 has a slope structure with an angle of 30° to 50°, used to press the outer ring of the bearing. The telescopic device 5 may be equipped with a cylinder, preferably 40° to 45°.

[0042] Specifically, the top plate 62 consists of an inner plate 621, an outer ring 622, and three connecting rods 623. The diameter of the inner plate 621 is smaller than the diameter of the annular electromagnet 401. The inner end of the pressing plate 61 is hinged to the inner end of the connecting rod 623 to ensure that the projection range of the pressing plate 61 avoids the wedge block 402; that is, the pressing plate 61 and the wedge block 402 are staggered.

[0043] The detector 7 is installed on the side of the machine body 1 and is used to collect the vibration signal of the bearing during rotation in real time and transmit the data to the external analysis system. The detector 7 adopts existing technology, and its specific structure and working principle will not be described in detail here.

[0044] In use: Place the bearing on the extension 32 of the positioning support block 3, then place the magnetic support block 4 between the positioning support blocks 3. Activate the annular electromagnet 401 of the magnetic support block 4. The annular electromagnet 401 attracts the rotating table 2 and moves it downwards. At this time, the second inclined surface 41 of the wedge block 402 pushes the positioning support block 3 to slide outwards, clamping the inner ring of the bearing through the positioning support block 3, thus fixing the inner ring of the bearing. Then, control the telescopic device 5 to press down the pressing frame 6. The inclined structure of the pressing plate 61 contacts the outer edge of the top surface of the outer ring of the bearing. The elastic lower support plate 63 deforms, applying pressure evenly to fix the outer ring. Start the drive motor and drive the rotating table 2 to rotate. The detector 7 collects vibration signals in real time and analyzes the vibration characteristics of the bearing.

[0045] After the test is completed, first reset the telescopic device 5, then turn off the annular electromagnet 401 and remove the magnetic support block 4. At this point, the bearing can be removed.

[0046] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A bearing vibration detection apparatus, characterized by: The utility model relates to a bearing pressing device, including: Machine body (1), the horizontal workbench (11) middle part is equipped with rotary table (2), at least three radial slide groove (21) are distributed in equal angle on the rotary table (2) top surface; Positioning support block (3) is slidably connected in each radial slide groove (21), and the inner side is equipped with first inclined plane (31); Magnetic support block (4) is attached to the rotary table (2) top surface by magnetism, and the outer side is equipped with second inclined plane (41) matched with first inclined plane (31), and first inclined plane (31) is matched with the outer push positioning support block (3) to clamp the inner ring of bearing; Telescopic equipment (5) is fixed on the top of machine body (1), and the telescopic end is connected with pressing frame (6), and the bottom of pressing frame (6) is equipped with at least three pressing plates (61) distributed in equal angle, and the lower plate surface of each pressing plate (61) is inclined plane structure, which is used for pressing the outer ring of bearing; Detector (7) is arranged on machine body (1) and is used for detecting bearing vibration signal.

2. A bearing vibration detection apparatus according to claim 1, wherein: The angle of the inclined plane structure is 30 DEG ~ 50 DEG.

3. The bearing vibration detection apparatus of claim 1, wherein: The magnetic support block (4) includes a ring-shaped electromagnet (401), and a plurality of wedge-shaped blocks (402) corresponding to the positioning support block (3) are arranged on the circumferential side of the ring-shaped electromagnet (401) in equal angle, and the outer side of the wedge-shaped block (402) is provided with the second inclined plane (41) matched with the first inclined plane (31).

4. A bearing vibration detection apparatus according to claim 3, wherein: The pressing frame (6) includes a top plate (62), three lower support plates (63) distributed in equal angle along the circumferential direction of the top plate (62), and a pressing plate (61) connected between the lower support plate (63) and the top plate (62), and the projection range of the pressing plate (61) avoids the wedge-shaped block (402).

5. A bearing vibration detection apparatus according to claim 4, wherein: The lower support plate (63) is an arc-shaped elastic steel plate, and the inner end of the pressing plate (61) is correspondingly connected.

6. A bearing vibration detection apparatus according to claim 4, wherein: The top plate (62) includes an inner plate (621), an outer ring (622), and three connecting rods (623) connecting the inner plate (621) and the outer ring (622), the diameter of the inner plate (621) is smaller than the diameter of the ring-shaped electromagnet (401), and the inner end of the pressing plate (61) is correspondingly connected to the inner end of the corresponding connecting rod (623).

7. The bearing vibration detection apparatus of claim 1, wherein: The rotary table (2) top surface middle part is vertically provided with a guide column (22) matched with the guide hole (42) in the bottom of the magnetic support block (4), to limit the radial deviation of the magnetic support block (4).

8. The bearing vibration detection apparatus of claim 1, wherein: The bottom of the positioning support block (3) is provided with an extension (32) extending outward along the same, for supporting the end face of the inner ring of bearing.

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