DF-type paired bearing shaft rigidity detection device
By designing the DF-type mating bearing shaft stiffness testing device, the problems of existing devices being unable to fix bearings of different sizes and slippage during the testing process have been solved. This enables stable testing of bearings of different sizes, improves the versatility and safety of the testing, and ensures the accuracy of the test results.
Patent Information
- Application Number
- CN202520488130.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Existing stiffness testing devices cannot fix bearings of different sizes, and they are prone to slipping when stress is applied, which affects the testing results and may damage the bearings.
A DF-type mating bearing shaft stiffness testing device was designed, comprising a testing platform, a support component, a fixing component, and a pressing component. The support component is used to fix the bearing at the place of use, the fixing component is used to clamp and press the bearing in place, and the control panel controls the pressing component to apply stress, ensuring that the bearing does not slip during the testing process and that the stress magnitude can be monitored in real time.
It enables robust testing of bearings of different sizes, improves the versatility and safety of the testing, avoids bearing damage, and ensures the accuracy and reliability of the test results.
Smart Images
Figure CN223783856U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a DF-type paired bearing shaft stiffness testing device, belonging to the technical field of bearing testing devices. Background Technology
[0002] DF type paired bearings refer to two angular contact bearings mounted face-to-face on the same axis, with their inner rings facing each other and their outer rings facing opposite directions. This type of bearing has good adjustment performance and can compensate for the bending deformation of the shaft. It is suitable for applications that require clearance adjustment, such as precision measuring instruments and printing machinery. However, after the bearing is manufactured, its stiffness needs to be tested. By testing the bearing's stiffness, we can assess its ability to resist deformation under external forces, thereby ensuring that the bearing will not undergo excessive deformation under normal operating conditions and maintain its original accuracy and performance.
[0003] However, existing stiffness testing devices cannot fix and test bearings of different sizes, which limits their use. They are also prone to slippage when stress is applied, which affects the stiffness test. Furthermore, existing stiffness testing devices cannot know the applied pressure in time, which can easily damage the bearings. In view of this, this utility model is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a DF-type mating bearing shaft stiffness testing device to solve the above-mentioned problems. It has the advantages of being able to test bearings of different sizes and having good testing results. Through the fixing component, bearings of different sizes can be pressurized and fixed on the testing platform, thereby improving the versatility of the structure. At the same time, it can prevent slippage when stress is applied, thereby improving the safety of testing. Furthermore, by controlling the pressing component through the control panel, the magnitude of stress applied can be known, improving the testing effect while avoiding damage to normal bearings.
[0005] This utility model achieves the above-mentioned objective through the following technical solution: a DF-type mating bearing shaft stiffness testing device, comprising a testing platform, with support components installed on both sides of the lower end of the testing platform, the support components being connected to the external usage location, a sliding groove being formed in the middle of the testing platform, and a fixing component for fixing an external bearing being installed on the sliding groove, a mounting frame being fixedly installed at the upper end of the testing platform, the mounting frame being U-shaped, and a pressing component being installed at the upper internal end of the mounting frame, and a control panel being fixedly installed on one side of the upper end of the testing platform, the fixing component and the pressing component being electrically connected to the control panel. In use, the structure is first fixed at the usage location by the support components, then the external bearing is snapped onto the testing platform by the fixing component, and the pressing component is controlled by the control panel to apply stress, thereby completing the testing of the shaft strength of the external bearing.
[0006] Preferably, in order to fix the structure at the place of use, the support component includes a support column, which is fixedly installed on both sides of the lower end of the detection platform, and fixing holes are opened at the four corners of the lower end of the support column. Expansion bolts are installed in the fixing holes, and the lower ends of the expansion bolts are connected to the external place of use.
[0007] Preferably, in order to drive the bidirectional threaded rod to rotate, the fixing assembly includes the bidirectional threaded rod and a control motor. The bidirectional threaded rod is rotatably engaged inside the slide groove. The control motor is fixedly installed on the outer side of the detection platform, and the output end of the control motor is fixedly connected to one end of the bidirectional threaded rod. The control motor is electrically connected to the control panel.
[0008] Preferably, in order to engage the external bearing in the engagement groove, the fixing assembly further includes an engagement seat, the lower part of which is slidably engaged in the groove, and the engagement seat is threaded onto both ends of the bidirectional threaded rod. The engagement seat has an engagement groove, and the external bearing is engaged in the engagement groove.
[0009] Preferably, in order to drive the screw to rotate, screws are threadedly installed on both sides of the locking seat, and a knob is fixedly installed at one end of the screw, with the knob located outside the locking seat.
[0010] Preferably, in order to press and fix the external bearing, the other end of the screw is rotatably engaged with a fixing pressing block, the fixing pressing block is located on both sides inside the locking groove, and an anti-slip pad is fixedly installed on one side of the fixing pressing block, with the external bearing located between the anti-slip pads.
[0011] Preferably, in order to drive the pressure sensor to rise and fall, the pressing assembly includes a multi-section electric push rod, which is fixedly installed in the middle of the upper part of the mounting bracket, and a pressure sensor is fixedly installed at the lower end of the multi-section electric push rod. Both the multi-section electric push rod and the pressure sensor are electrically connected to the control panel.
[0012] Preferably, in order to apply stress to the external bearing and thus detect its shaft strength, a pressing plate is fixedly installed at the lower end of the pressure sensor, and a soft pad is fixedly installed at the lower end of the pressing plate.
[0013] The beneficial effects of this utility model are: the fixing component can pressurize and fix bearings of different sizes on the testing platform, thereby improving the versatility of the structure, while preventing slippage when stress is applied, thus improving the safety during testing. Furthermore, the control panel can control the pressing component to know the magnitude of the stress applied, improving the testing effect while avoiding damage to normal bearings. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a schematic diagram showing the connection between the testing platform and the support components in this utility model.
[0016] Figure 3 This is a schematic diagram of the fixing component in this utility model.
[0017] Figure 4 This is a half-sectional view of the card connector in this utility model.
[0018] Figure 5 This is a schematic diagram showing the connection between the mounting bracket and the pressing component in this utility model.
[0019] In the diagram: 1. Testing platform; 2. Support assembly; 201. Support column; 202. Expansion bolt; 3. Slide groove; 4. Fixing assembly; 401. Bidirectional threaded rod; 402. Control motor; 403. Snap-fit seat; 404. Snap-fit groove; 405. Screw; 406. Knob; 407. Fixing compression block; 408. Anti-slip pad; 5. Mounting bracket; 6. Pressing assembly; 601. Multi-section electric push rod; 602. Pressure sensor; 603. Pressing plate; 604. Soft pad; 7. Control panel. Detailed Implementation
[0020] 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.
[0021] Please see Figures 1-5 As shown, a DF-type mating bearing shaft stiffness testing device includes a testing platform 1. Support components 2 are installed on both sides of the lower end of the testing platform 1. The support components 2 are connected to the external usage location. A slide groove 3 is opened in the middle of the testing platform 1. A fixing component 4 for fixing the external bearing is installed on the slide groove 3. A mounting frame 5 is fixedly installed on the upper end of the testing platform 1. The mounting frame 5 is U-shaped, and a pressing component 6 is installed on the upper part of the mounting frame 5. A control panel 7 is fixedly installed on one side of the upper end of the testing platform 1. The fixing component 4 and the pressing component 6 are electrically connected to the control panel 7. In use, the structure is first fixed at the usage location by the support components 2. Then, the external bearing is snapped onto the testing platform 1 by the fixing component 4. The pressing component 6 is controlled by the control panel 7 to apply stress, thereby completing the shaft strength test of the external bearing.
[0022] The support assembly 2 includes a support column 201, which is fixedly installed on both sides of the lower end of the testing platform 1. Fixing holes are provided at the four corners of the lower end of the support column 201, and expansion bolts 202 are installed in the fixing holes. The lower end of the expansion bolts 202 is connected to the external use location. In use, the support column 201 is first fixed to the external use location by the expansion bolts 202, thereby completing the fixation of this structure.
[0023] The fixing assembly 4 includes a bidirectional threaded rod 401 and a control motor 402. The bidirectional threaded rod 401 is rotatably engaged inside the slide groove 3. The control motor 402 is fixedly installed on the outer side of the detection platform 1, and its output end is fixedly connected to one end of the bidirectional threaded rod 401. The control motor 402 is electrically connected to the control panel 7. The fixing assembly 4 also includes a snap-fit seat 403. The lower part of the snap-fit seat 403 is slidably engaged in the slide groove 3, and the snap-fit seat 403 is threaded onto both ends of the bidirectional threaded rod 401. The snap-fit seat 403 has a snap-fit groove 404, and an external bearing is engaged in the snap-fit groove 404. Both sides of the snap-fit seat 403 are threaded with screws 405. A knob 406 is fixedly installed at one end of the screw 405. The knob 406 is located outside the snap-fit seat 403. The other end of the screw 405 is rotatably snapped with a fixing compression block 407. The fixing compression block 407 is located on both sides inside the snap-fit groove 404, and an anti-slip pad 408 is fixedly installed on one side of the fixing compression block 407. The external bearing is located between the anti-slip pads 408. In use, the control panel 7 controls the control motor 402 to drive the bidirectional threaded rod 401 to rotate, thereby adjusting the distance between the snap-fit seats 403. Then, the external bearing is snapped into the snap-fit groove 404. Rotating the knob 406 drives the screw 405 to rotate, thereby pressing and fixing the external bearing through the fixing compression block 407.
[0024] The pressing assembly 6 includes a multi-section electric push rod 601, which is fixedly installed in the upper middle position inside the mounting bracket 5. A pressure sensor 602 is fixedly installed at the lower end of the multi-section electric push rod 601. Both the multi-section electric push rod 601 and the pressure sensor 602 are electrically connected to the control panel 7. A pressing plate 603 is fixedly installed at the lower end of the pressure sensor 602, and a soft pad 604 is fixedly installed at the lower end of the pressing plate 603. When the external bearing is fixed, the multi-section electric push rod 601 is controlled to work through the control panel 7, so that the external bearing can be pressed by the pressing plate 603, thereby realizing the detection of the shaft strength of the external bearing.
[0025] In use, the support column 201 is first fixed to the external location using expansion bolts 202, thus completing the fixation of the structure. The control panel 7 controls the motor 402 to drive the bidirectional threaded rod 401 to rotate, thereby adjusting the distance between the snap-fit seats 403. Then, the external bearing is snapped into the snap-fit groove 404. Rotating the knob 406 drives the screw 405 to rotate, thereby pressing and fixing the external bearing through the fixing compression block 407. After the external bearing is fixed, the control panel 7 controls the multi-section electric push rod 601 to work, thereby pressing the external bearing through the pressing plate 603, thus realizing the detection of the shaft strength of the external bearing.
[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A DF-type mating bearing shaft stiffness testing device, characterized in that: The system includes a testing platform (1), with support components (2) installed on both sides of the lower end of the testing platform (1). The support components (2) are connected to the external usage location. A slide groove (3) is provided in the middle of the testing platform (1). A fixing component (4) for fixing an external bearing is installed on the slide groove (3). A mounting frame (5) is fixedly installed on the upper end of the testing platform (1). The mounting frame (5) is U-shaped, and a pressing component (6) is installed on the upper part of the mounting frame (5). A control panel (7) is fixedly installed on one side of the upper end of the testing platform (1). The fixing component (4) and the pressing component (6) are electrically connected to the control panel (7).
2. The DF-type paired bearing shaft stiffness testing device according to claim 1, characterized in that: The support assembly (2) includes a support column (201), which is fixedly installed on both sides of the lower end of the detection platform (1). Fixing holes are provided at the four corners of the lower end of the support column (201), and expansion bolts (202) are provided in the fixing holes. The lower end of the expansion bolts (202) is connected to the external location.
3. The DF-type mating bearing shaft stiffness testing device according to claim 1, characterized in that: The fixing component (4) includes a bidirectional threaded rod (401) and a control motor (402). The bidirectional threaded rod (401) is rotatably engaged inside the slide groove (3). The control motor (402) is fixedly installed on the outer side of the detection platform (1), and the output end of the control motor (402) is fixedly connected to one end of the bidirectional threaded rod (401). The control motor (402) is electrically connected to the control panel (7).
4. The DF-type mating bearing shaft stiffness testing device according to claim 3, characterized in that: The fixing component (4) further includes a snap-fit seat (403), the lower part of which is slidably snapped into the slide groove (3), and the snap-fit seat (403) is threaded onto both ends of the bidirectional threaded rod (401). A snap-fit groove (404) is provided on the snap-fit seat (403), and an external bearing is snapped into the snap-fit groove (404).
5. The DF-type mating bearing shaft stiffness testing device according to claim 4, characterized in that: Both sides of the snap-fit base (403) are threaded with screws (405), and a knob (406) is fixedly installed at one end of the screws (405). The knob (406) is located outside the snap-fit base (403).
6. The DF-type mating bearing shaft stiffness testing device according to claim 5, characterized in that: The other end of the screw (405) is rotatably engaged with a fixed pressing block (407). The fixed pressing block (407) is located on both sides inside the locking groove (404), and an anti-slip pad (408) is fixedly installed on one side of the fixed pressing block (407). An external bearing is located between the anti-slip pads (408).
7. The DF-type paired bearing shaft stiffness testing device according to claim 1, characterized in that: The pressing assembly (6) includes a multi-section electric push rod (601), which is fixedly installed in the middle of the upper part of the mounting bracket (5). A pressure sensor (602) is fixedly installed at the lower end of the multi-section electric push rod (601). Both the multi-section electric push rod (601) and the pressure sensor (602) are electrically connected to the control panel (7).
8. The DF-type mating bearing shaft stiffness testing device according to claim 7, characterized in that: A pressing plate (603) is fixedly installed at the lower end of the pressure sensor (602), and a soft pad (604) is fixedly installed at the lower end of the pressing plate (603).