Hub bearing hardness detection device

Abstract

The utility model discloses a hub bearing hardness detection device. The hub bearing hardness detection device comprises a supporting piece, a hardness detection comparison coil and a hardness detection coil, according to the bearing detection device, the transmission rod is screwed with the two groups of moving seats through the two groups of opposite thread grooves, the two groups of moving seats move relatively until the distance between the two groups of lapping plates is fit with the inner diameter of a bearing to be detected, the bearing is placed on the two groups of moving seats, and the inner side of the bearing abuts against the two groups of lapping plates at the same time, so that stable placement of the bearing is realized; the air cylinder is lifted up to send a product into a coil detection range, high-frequency eddy current is introduced into the detection coil, and whether the hardness of the detected product is qualified or not is determined by comparing a coil detection result with product data in the comparison coil, so that stable bearing detection process is ensured, and the detection efficiency is improved. The hub bearing hardness detection device can adapt to bearings with different sizes by adjusting the positions of the two groups of moving seats and the lapping plates, so that the application range of the hub bearing hardness detection device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub bearings, in particular to a wheel hub bearing hardness detection device. Background Art

[0002] During the production process, the outer ring, shaft wheel and inner ring of the hub bearing need to be tested for hardness using a hub bearing hardness testing device.

[0003] Chinese patent publication number CN218885673U, publication date 20230418, discloses a wheel hub bearing hardness detection mechanism, including a base and a wheel hub bearing lifting and positioning assembly and a wheel hub bearing hardness detection assembly correspondingly arranged on the base. The wheel hub bearing lifting and positioning assembly includes a first lifting cylinder, a lifting bracket, a lifting guide rail and a workpiece positioning seat. The lifting guide rail is fixed to one side of the base, and the lifting bracket is slidably connected to the lifting guide rail. The first lifting cylinder is connected to the lifting bracket and can drive it to move up and down along the lifting guide rail. The workpiece positioning seat is fixed to the top of the lifting bracket, and the workpiece positioning seat is a hollow cylindrical structure.

[0004] The main body of the existing wheel hub bearing hardness detection device such as the above-mentioned one is mostly composed of two parts: a pushing part and a detection part. The detection part includes a hardness detection coil and a hardness detection comparison coil, while the pushing part is composed of a cylinder and a placement part. The bearing is placed on the placement part, and the cylinder pushes the placement part to send the product into the coil detection range. The detection coil is passed with high-frequency eddy current, and the coil detection results are compared with the product data in the comparison coil to confirm whether the hardness of the tested product is qualified. In the specific implementation process, the existing placement parts are mostly one-piece structures, which cannot be synchronously adjusted according to the different bearing sizes, thereby increasing the limitations of the wheel hub bearing hardness detection device. Therefore, it is urgent to propose a corresponding wheel hub bearing hardness detection device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and to provide a wheel hub bearing hardness detection device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A wheel hub bearing hardness detection device includes a support member, a hardness detection comparison coil and a hardness detection coil. The outer wall of the support member is fixedly connected to mounting plate one, mounting plate two and mounting plate three. Mounting plate one and mounting plate three are fixedly connected to the hardness detection comparison coil and the hardness detection coil respectively. A cylinder is fixedly installed on the top of mounting plate two. The output end of the cylinder is fixedly connected to a top frame through a connecting frame. Two groups of movable seats are provided on the inner wall of the top frame, and a driving assembly for promoting the relative movement of the two groups of movable seats is provided on the inner side of the top frame. Both groups of movable seats are fixedly installed with a strap.

[0008] Preferably, a vacuum pump is fixedly installed on the top of the horizontal end of the connecting frame, the output end of the vacuum pump is fixedly connected to the bottom of one group of the two groups of movable seats, and the movable seats are penetrated by an air hole that is connected to the connecting pipe.

[0009] Preferably, the connecting pipe includes a smooth section and a bellows, and the smooth section and the bellows are integrally injection-molded.

[0010] Preferably, the two groups of butt plates are both in an arc-shaped structure.

[0011] Preferably, the driving assembly includes a driving member and a limiting portion for axially limiting the two groups of movable seats. The driving member is fixedly connected to the outer wall of the top frame, and the output end of the driving member is fixedly connected to a transmission rod, and the outer wall of the transmission rod is screwed together with the two groups of movable seats through two groups of opposite threaded grooves.

[0012] Preferably, the limiting portion includes a polished rod, and the outer walls of the two groups of movable seats are slidably connected to the outer walls of the polished rod.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] 1. In the present application, the driving member drives the transmission rod to rotate, and the transmission rod is screwed with the two sets of movable seats through two sets of opposite thread grooves. The two sets of movable seats move relative to each other until the spacing between the two sets of straps fits the inner diameter of the bearing to be tested. The bearing is placed on the two sets of movable seats, and the inner side of the bearing is simultaneously against the two sets of straps to achieve stable placement of the bearing. The cylinder is lifted to send the product into the coil detection range, and the detection coil is energized with high-frequency eddy current. The coil detection result is compared with the product data in the comparison coil to confirm whether the hardness of the tested product is qualified, thereby ensuring the stability of the bearing detection process. At the same time, the position of the two sets of movable seats and the straps can be adjusted to adapt to bearings of different sizes, thereby improving the applicability of the wheel hub bearing hardness detection device.

[0015] 2. In the present application, after the bearings are placed on the two sets of placement seats, the vacuum pump operates to generate negative pressure inside the connecting tube. The negative pressure causes the bearings to be stably attracted to the top of the movable seat, thereby further improving the position stability of the bearings. When the movable seat is adjusted to a horizontal position, the bellows is simultaneously extended and retracted, thereby not affecting the normal use of the connecting tube and allowing the connecting tube to adapt to the position movement of the movable seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shows a schematic diagram of the overall structure provided according to an embodiment of the utility model;

[0017] Figure 2 Shows a schematic structural diagram of a second mounting plate provided according to an embodiment of the present utility model;

[0018] Figure 3 Shows a schematic structural diagram of a mobile seat provided according to an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of the connecting pipe structure provided according to an embodiment of the present utility model is shown.

[0020] Legend:

[0021] 1. Support member; 2. Mounting plate 1; 3. Mounting plate 2; 4. Hardness test comparison coil; 5. Mounting plate 3; 6. Hardness test coil; 7. Cylinder; 8. Connecting frame; 9. Top frame; 10. Moving seat; 11. Strap board; 12. Polished rod; 13. Transmission rod; 14. Driving member; 15. Vacuum pump; 16. Connecting pipe; 17. Bellows. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A wheel hub bearing hardness testing device includes a support member 1, a hardness testing comparison coil 4, and a hardness testing coil 6. The outer wall of the support member 1 is fixedly connected to a mounting plate 1 2, a mounting plate 2 3, and a mounting plate 3 5. The mounting plate 1 2 and the mounting plate 3 5 are fixedly connected to the hardness testing comparison coil 4 and the hardness testing coil 6, respectively. A cylinder 7 is fixedly installed on the top of the mounting plate 2 3. The output end of the cylinder 7 is fixedly connected to a top frame 9 via a connecting frame 8. Two sets of movable seats 10 are provided on the inner wall of the top frame 9, and a drive assembly for promoting relative movement of the two sets of movable seats 10 is provided on the inner side of the top frame 9. A bridge plate 11 is fixedly installed on the top of each of the two sets of movable seats 10.

[0025] The driving member 14 drives the transmission rod 13 to rotate, and the transmission rod 13 is screwed with the two groups of movable seats 10 through two groups of opposite thread grooves. The two groups of movable seats 10 move relative to each other until the spacing between the two groups of straps 11 fits the inner diameter of the bearing to be tested. The bearing is placed on the two groups of movable seats 10, and the inner side of the bearing is simultaneously against the two groups of straps 11, so as to achieve stable placement of the bearing. The cylinder 7 is lifted to send the product into the coil detection range of the hardness detection coil 6. The detection coil is induced with high-frequency eddy current, and the coil detection result is compared with the product data in the comparison coil to confirm whether the hardness of the tested product is qualified, thereby ensuring the stability of the bearing detection process. At the same time, the position of the two groups of movable seats 10 and the straps 11 can be adjusted to adapt to bearings of different sizes, thereby improving the applicability of the wheel hub bearing hardness detection device.

[0026] Specifically, such as Figure 2 and Figure 4 As shown, a vacuum pump 15 is fixedly installed on the top of the horizontal end of the connecting frame 8, and the output end of the vacuum pump 15 is fixedly connected to the bottom of one group of the two groups of movable seats 10, and the movable seat 10 is penetrated by an air hole that is connected to the connecting pipe 16. The connecting pipe 16 includes a smooth section and a bellows 17, and the smooth section and the bellows 17 are injection-molded as one piece. After the bearings are placed on the two groups of movable seats 10, the vacuum pump 15 works to generate negative pressure inside the connecting pipe 16. The negative pressure will make the bearing stably attracted to the top of the movable seat 10, thereby further improving the position stability of the bearing, and when the movable seat 10 is adjusted in horizontal position, the bellows 17 is synchronously extended and retracted, so as not to affect the normal use of the connecting pipe 16 while the connecting pipe 17 can adapt to the position movement of the movable seat.

[0027] Specifically, such as Figure 2 and Figure 3As shown, the two groups of straps 11 are both arc-shaped structures, which fit the structural characteristics of the inner ring of the bearing to ensure stable stability. The driving assembly includes a driving member 14 and a limiting portion for axially limiting the two groups of moving seats 10. The driving member 14 is fixedly connected to the outer wall of the top frame 9, and the output end of the driving member 14 is fixedly connected to the transmission rod 13, and the outer wall of the transmission rod 13 is screwed together with the two groups of moving seats 10 through two groups of opposite thread grooves. The limiting portion includes a light rod 12, and the outer walls of the two groups of moving seats 10 are slidingly connected to the outer wall of the light rod 12. The driving member 14 drives the transmission rod 13 to rotate, and the transmission rod 13 is screwed together with the two groups of moving seats 10 through two groups of opposite thread grooves. The inner walls of the two groups of moving seats 10 slide synchronously along the light rod 12, so that the two groups of moving seats 10 perform stable relative motion until the spacing between the two groups of straps 11 fits the inner diameter of the bearing to be tested.

[0028] Working principle: The driving member 14 drives the transmission rod 13 to rotate. The transmission rod 13 is screwed with the two sets of movable seats 10 through two sets of opposite thread grooves. The two sets of movable seats 10 move relative to each other until the spacing between the two sets of straps 11 fits the inner diameter of the bearing to be tested. The bearing is placed on the two sets of movable seats 10, and the inner side of the bearing is simultaneously against the two sets of straps 11 to achieve stable placement of the bearing. The cylinder 7 is lifted to send the product into the coil detection range of the hardness detection coil 6. The detection coil is energized with high-frequency eddy current. The coil detection result is compared with the product data in the comparison coil to confirm whether the hardness of the tested product is qualified, thereby ensuring the bearing inspection. While the testing process is carried out stably, the positions of the two groups of movable seats 10 and the straps 11 can be adjusted to adapt to bearings of different sizes, thereby improving the scope of application of the wheel hub bearing hardness testing device. After the bearings are placed on the two groups of movable seats 10, the vacuum pump 15 works to generate negative pressure inside the connecting pipe 16. The negative pressure will make the bearing stably attracted to the top of the movable seat 10, thereby further improving the position stability of the bearing. When the movable seat 10 is adjusted in horizontal position, the bellows 17 is synchronously extended and retracted, so as not to affect the normal use of the connecting pipe 16 while the connecting pipe 17 can adapt to the position movement of the movable seat.

[0029] The above description of the embodiments is intended to enable those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wheel hub bearing hardness detection device, comprising a support member (1), a hardness detection comparison coil (4) and a hardness detection coil (6), characterized in that: The outer wall of the support member (1) is fixedly connected to the mounting plate 1 (2), the mounting plate 2 (3) and the mounting plate 3 (5); the mounting plate 1 (2) and the mounting plate 3 (5) are fixedly connected to the hardness detection comparison coil (4) and the hardness detection coil (6) respectively; a cylinder (7) is fixedly installed on the top of the mounting plate 2 (3); the output end of the cylinder (7) is fixedly connected to the top frame (9) through the connecting frame (8); two groups of movable seats (10) are provided on the inner wall of the top frame (9); and a driving assembly for pushing the two groups of movable seats (10) to move relative to each other is provided on the inner side of the top frame (9); and a bridge plate (11) is fixedly installed on the top of the two groups of movable seats (10).

2. A wheel hub bearing hardness detection device according to claim 1, characterized in that: A vacuum pump (15) is fixedly installed on the top of the horizontal end of the connecting frame (8), and the output end of the vacuum pump (15) is fixedly connected to the bottom of one of the two groups of movable seats (10), and the movable seats (10) are penetrated by an air hole that is in communication with the connecting pipe (16).

3. A wheel hub bearing hardness detection device according to claim 2, characterized in that: The connecting pipe (16) comprises a smooth section and a corrugated pipe (17), and the smooth section and the corrugated pipe (17) are integrally injection-molded.

4. A wheel hub bearing hardness detection device according to claim 3, characterized in that: The two groups of buttress plates (11) are both in an arc-shaped structure.

5. A wheel hub bearing hardness detection device according to claim 4, characterized in that: The driving assembly includes a driving member (14) and a limiting portion for axially limiting the two groups of movable seats (10); the driving member (14) is fixedly connected to the outer wall of the top frame (9); and the output end of the driving member (14) is fixedly connected to a transmission rod (13); and the outer wall of the transmission rod (13) is screwed together with the two groups of movable seats (10) through two groups of opposite thread grooves.

6. A wheel hub bearing hardness detection device according to claim 5, characterized in that: The limiting portion includes a polished rod (12), and the outer walls of the two groups of movable seats (10) are both slidably connected to the outer walls of the polished rod (12).

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