A convenient clamping friction torque test tool
By designing a friction torque testing fixture that includes an electric push rod and a testing instrument, the problem of complex bearing clamping in the existing technology is solved, and efficient and stable bearing testing is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING BEARING
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-21
AI Technical Summary
The existing friction torque testing fixture has a complicated clamping process for bearings, which affects testing efficiency.
A friction torque testing fixture was designed, comprising components such as a body, a test bench, a clamping mechanism, an electric push rod, and a testing instrument. The electric push rod drives the telescopic rod to control the spacing between the clamps, thereby achieving stable clamping of bearings of different models. The friction torque is then measured using the testing instrument.
It improves the efficiency and stability of bearing clamping, ensures the accuracy and flexibility of testing, can adapt to the clamping requirements of different bearing models, and reduces operational complexity.
Smart Images
Figure CN224535266U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of friction torque testing technology, and more specifically to a friction torque testing fixture that is easy to clamp. Background Technology
[0002] The bearing friction torque test is an experiment that evaluates the magnitude of the frictional resistance a bearing needs to overcome during rotation. This test is crucial for understanding bearing performance, efficiency, and predicting its lifespan in specific applications.
[0003] Existing friction torque testing fixtures involve complex clamping operations during bearing installation, affecting testing efficiency. Therefore, a new technical solution is needed to address this issue. Utility Model Content
[0004] The purpose of this invention is to provide a convenient clamping fixture for testing friction torque, which solves the problem that existing friction torque testing fixtures involve complicated operation during bearing clamping and affect testing efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a friction torque testing fixture that is easy to clamp, comprising: a body, wherein a test platform is provided inside the body and a clamping mechanism is provided on the surface of the test platform; the clamping mechanism includes a fixed frame fixedly installed with the test platform and a sliding rod provided on the inner side of the fixed frame; a movable seat is provided on the surface of the sliding rod and the movable seat is slidably connected to the sliding rod; a chuck is provided inside the movable seat and a clamping groove is provided on the inner side of the chuck; a bearing to be tested is installed between two sets of clamping grooves; and an electric push rod is provided on the surface of the test platform. The power output end of the rod is equipped with a telescopic rod, which passes through the fixed frame and connects to the movable seat. The test platform has a through hole inside. The lower part of the test platform is equipped with two sets of support columns, and the surface of the support columns is equipped with a movable plate. A test mechanism is installed on the lower part of the movable plate. The test mechanism includes a mounting frame that is fixedly installed with the movable plate. A test motor is installed on the inner side of the mounting frame. A test instrument is installed at the power output end of the test motor, and a drive shaft is installed on the upper part of the test instrument. An installation head is installed on the upper part of the drive shaft, and the installation head passes through the through hole and connects to the bearing to be tested.
[0006] In a preferred embodiment of this utility model, the machine body is provided with a support frame inside, and a drive box is provided at the lower part of the support frame. A lifting motor is provided at the upper part of the support frame, and the power output end of the lifting motor extends into the interior of the drive box and is equipped with a drive wheel. A lifting screw is provided inside the movable plate, and the two ends of the lifting screw are respectively connected to the test bench and the drive box. A driven wheel is installed on the part of the lifting screw located inside the drive box. A drive chain is provided between the drive wheel and the driven wheel.
[0007] In a preferred embodiment of this utility model, the electric push rods are provided in two sets and are arranged symmetrically, and a synchronizer is provided between the two sets of electric push rods.
[0008] In a preferred embodiment of this utility model, the clamping groove is arranged in a triangular structure.
[0009] In a preferred embodiment of this utility model, the movable seat is provided with a slot inside and a corresponding locking block is provided at the corresponding position of the clamp.
[0010] In a preferred embodiment of this utility model, the clamp is made of an elastic material.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] This invention features a test platform inside the machine body, with a clamping mechanism on the surface of the test platform. The clamping mechanism includes a fixed frame fixedly mounted to the test platform, with a sliding rod on the inner side of the fixed frame. A movable seat is provided on the surface of the sliding rod, and the movable seat is slidably connected to the sliding rod. A chuck is provided inside the movable seat, with a clamping groove on its inner side. A bearing to be tested is installed between two sets of clamping grooves. An electric push rod is provided on the surface of the test platform, with a telescopic rod at its power output end. Two sets of electric push rods are provided, symmetrically arranged, and a synchronizer is provided between the two sets of electric push rods to achieve synchronous movement. The electric push rod drives the telescopic rod... The telescopic rod extends and retracts, thereby controlling the distance between the clamps. This allows for the clamping and fixing of bearings of different models and the application of different clamping forces. Two sets of support columns are provided at the bottom of the test bench, and movable plates are provided on the surface of the support columns. A test mechanism is installed at the bottom of the movable plates. The test mechanism includes a mounting frame fixedly installed with the movable plates. A test motor is provided inside the mounting frame. A test instrument is provided at the power output end of the test motor, and a drive shaft is provided at the top of the test instrument. A mounting head is provided at the top of the drive shaft and is connected to the bearing under test. This setup allows a constant rotational speed to be applied to the bearing under test, and the resulting frictional torque is measured by the test instrument. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a front view structural diagram of the present invention;
[0015] Figure 3 This is a top view sectional structural diagram of the present invention;
[0016] Figure 4 This is a schematic diagram of the lifting mechanism of this utility model.
[0017] In the diagram: 1. Machine body; 2. Test bench; 3. Test mechanism; 4. Clamping mechanism; 5. Support column; 6. Movable plate; 7. Mounting frame; 8. Test motor; 9. Tester; 10. Drive shaft; 11. Mounting head; 12. Bearing to be tested; 13. Through hole; 14. Electric push rod; 15. Telescopic rod; 16. Fixed frame; 17. Movable seat; 18. Sliding rod; 19. Chuck; 20. Clamping groove; 21. Card slot; 22. Support frame; 23. Drive box; 24. Lifting motor; 25. Drive wheel; 26. Drive chain; 27. Driven wheel; 28. Lifting screw. Detailed Implementation
[0018] 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.
[0019] Please see Figure 1-4This utility model provides a technical solution: a convenient clamping fixture for testing friction torque, comprising: a body 1, a test platform 2 disposed inside the body 1, and a clamping mechanism 4 disposed on the surface of the test platform 2, the clamping mechanism 4 including a fixed frame 16 fixedly installed with the test platform 2, and a sliding rod 18 disposed on the inner side of the fixed frame 16, a movable seat 17 disposed on the surface of the sliding rod 18, the movable seat 17 being slidably connected to the sliding rod 18, a chuck 19 disposed inside the movable seat 17, and a clamping groove 20 disposed on the inner side of the chuck 19, a bearing 12 to be tested being installed between two sets of clamping grooves 20, and an electric push rod 14 disposed on the surface of the test platform 2, with a telescopic rod 15 disposed at the power output end of the electric push rod 14. The telescopic rod 15 passes through the fixed frame 16 and connects to the movable seat 17. The test platform 2 has a through hole 13 inside. Two sets of support columns 5 are provided at the lower part of the test platform 2, and a movable plate 6 is provided on the surface of the support columns 5. A test mechanism 3 is installed at the lower part of the movable plate 6. The test mechanism 3 includes a mounting frame 7 fixedly installed with the movable plate 6. A test motor 8 is provided inside the mounting frame 7. A test instrument 9 is provided at the power output end of the test motor 8, and a drive shaft 10 is provided at the upper part of the test instrument 9. A mounting head 11 is provided at the upper part of the drive shaft 10, and the mounting head 11 passes through the through hole 13 and connects to the bearing 12 to be tested. The test platform 2 is provided inside the machine body 1, and a mounting head 11 is provided on the surface of the test platform 2. The clamping mechanism 4 includes a fixed frame 16 fixedly installed on the test bench 2, with a sliding rod 18 provided on the inner side of the fixed frame 16. A movable seat 17 is provided on the surface of the sliding rod 18, and the movable seat 17 is slidably connected to the sliding rod 18. A chuck 19 is provided inside the movable seat 17, and a clamping groove 20 is provided on the inner side of the chuck 19. The bearing to be tested 12 is installed between the two sets of clamping grooves 20. An electric push rod 14 is provided on the surface of the test bench 2, and a telescopic rod 15 is provided at the power output end of the electric push rod 14. Two sets of electric push rods 14 are provided and symmetrically arranged. A synchronizer is provided between the two sets of electric push rods 14 so that the two sets of electric push rods 14 can move synchronously. The electric push rod 14 drives the telescopic rod 15 to extend and retract. This allows for the control of the spacing between the chucks 19, enabling the clamping and fixing of bearings of different models and the application of different clamping forces. Two sets of support columns 5 are provided at the lower part of the test bench 2, and a movable plate 6 is provided on the surface of the support columns 5. A test mechanism 3 is installed at the lower part of the movable plate 6. The test mechanism 3 includes a mounting frame 7 fixedly installed with the movable plate 6. A test motor 8 is provided inside the mounting frame 7. A test instrument 9 is provided at the power output end of the test motor 8, and a drive shaft 10 is provided on the upper part of the test instrument 9. A mounting head 11 is provided on the upper part of the drive shaft 10, and the mounting head 11 is connected to the bearing 12 to be tested. This setup allows a constant rotational speed to be applied to the bearing under test, and the frictional torque generated by this is measured by the test instrument 9.
[0020] Further improvements, such as Figure 4 As shown: The machine body 1 has a support frame 22 inside, and a drive box 23 is provided at the lower part of the support frame 22. A lifting motor 24 is provided at the upper part of the support frame 22, and the power output end of the lifting motor 24 extends into the interior of the drive box 23 and is equipped with a drive wheel 25. The movable plate 6 has a lifting screw 28 inside, and the two ends of the lifting screw 28 are respectively connected to the test platform 2 and the drive box 23. The part of the lifting screw 28 located inside the drive box 23 is equipped with a driven wheel 27. A drive chain 26 is provided between the drive wheel 25 and the driven wheel 27. Through the support frame 22, drive box 23, lifting motor 24, drive wheel 25, drive chain 26, driven wheel 27 and lifting screw 28 provided inside the machine body 1, the lifting function of the movable plate 6 and the test mechanism 3 is realized, so that the test mechanism 3 can adjust the height according to different models of bearings 12 to be tested, ensuring precise alignment during the test process and improving the accuracy and flexibility of the test.
[0021] Further improvements, such as Figure 3 As shown: There are two sets of electric push rods 14 arranged symmetrically. A synchronizer is provided between the two sets of electric push rods 14. This arrangement ensures that the two sets of electric push rods 14 can move synchronously, thereby accurately controlling the distance between the chucks 19, realizing stable clamping of bearings of different models and applying uniform clamping force, thus improving the efficiency and stability of clamping.
[0022] Further improvements, such as Figure 3 As shown: The clamping groove 20 is arranged in a triangular structure. This structure can better adapt to the shape of the bearing, increase the stability and firmness of the clamping, and prevent the bearing from sliding or shifting during the test.
[0023] Further improvements, such as Figure 3 As shown: The movable seat 17 is provided with a slot 21 inside and a corresponding locking block is provided at the corresponding position of the chuck 19. The locking structure allows the chuck 19 to be firmly fixed on the movable seat 17, while facilitating disassembly and replacement, thus improving the convenience and flexibility of clamping.
[0024] Further improvements, such as Figure 3 As shown: The chuck 19 is made of an elastic material. This design gives the chuck 19 a certain degree of flexibility and wear resistance, which can protect the bearing surface from damage during clamping, while ensuring the tightness and stability of the clamping.
[0025] Working principle: The bearing to be tested 12 is placed between the two sets of clamping slots 20. The electric push rod 14 is started, which drives the telescopic rod 15 to extend and retract, thereby pushing the movable seat 17 to slide along the sliding rod 18, so that the chuck 19 gradually approaches and clamps the bearing to be tested 12. Since the electric push rod 14 is equipped with a synchronizer, it ensures that the two sets of chucks 19 can move synchronously and achieve stable clamping. According to the model and size of the bearing to be tested 12, the lifting motor 24 is started, which drives the drive wheel 25 to rotate. The drive chain 26 transmits the rotation to the driven wheel 27, which in turn drives the lifting screw 28 to rotate, so that the movable plate 6 and the testing mechanism 3 move up and down along the support column 5 and are adjusted to a height position that matches the bearing to be tested 12. The testing motor 8 is started, which drives the testing instrument 9 to rotate. The rotational force is transmitted to the bearing to be tested 12 through the drive shaft 10 and the mounting head 11. The tester 9 measures the resulting frictional torque in real time and records the data. By applying a constant rotational speed to the bearing under test, the magnitude of the frictional resistance that the bearing needs to overcome when rotating can be accurately assessed. After the test is completed, the electric push rod 14 is controlled to move in the opposite direction, so that the chuck 19 is released and the bearing under test 12 is released.
[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0028] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.
Claims
1. A convenient clamping fixture for testing friction torque, characterized in that: include: The machine body (1) has a test bench (2) inside and a clamping mechanism (4) on the surface of the test bench (2). The clamping mechanism (4) includes a fixed frame (16) fixedly installed with the test bench (2) and a sliding rod (18) on the inner side of the fixed frame (16). A movable seat (17) is provided on the surface of the sliding rod (18) and the movable seat (17) is slidably connected to the sliding rod (18). A chuck (19) is provided inside the movable seat (17) and a clamping groove (20) is provided on the inner side of the chuck (19). A bearing (12) to be tested is installed between the two sets of clamping grooves (20). An electric push rod (14) is provided on the surface of the test bench (2) and a telescopic rod (15) is provided at the power output end of the electric push rod (14). (15) The fixed frame (16) and the movable seat (17) are connected. The test platform (2) has a through hole (13) inside. The test platform (2) has two sets of support columns (5) at the bottom and a movable plate (6) on the surface of the support columns (5). The test mechanism (3) is installed at the bottom of the movable plate (6). The test mechanism (3) includes a mounting frame (7) fixedly installed with the movable plate (6). The test motor (8) is installed on the inner side of the mounting frame (7). The test instrument (9) is installed at the power output end of the test motor (8) and a drive shaft (10) is installed on the upper part of the test instrument (9). The mounting head (11) is installed on the upper part of the drive shaft (10) and the mounting head (11) passes through the through hole (13) and is connected to the bearing (12) to be tested.
2. The friction torque testing fixture for easy clamping according to claim 1, characterized in that: The machine body (1) is provided with a support frame (22) inside, and a drive box (23) is provided at the lower part of the support frame (22). A lifting motor (24) is provided at the upper part of the support frame (22), and the power output end of the lifting motor (24) extends into the drive box (23) and is equipped with a drive wheel (25). A lifting screw (28) is provided inside the movable plate (6), and the two ends of the lifting screw (28) are connected to the test bench (2) and the drive box (23) respectively. A driven wheel (27) is installed on the part of the lifting screw (28) inside the drive box (23). A drive chain (26) is provided between the drive wheel (25) and the driven wheel (27).
3. The friction torque testing fixture for easy clamping according to claim 1, characterized in that: The electric push rods (14) are provided in two sets and are arranged symmetrically, and a synchronizer is provided between the two sets of electric push rods (14).
4. The friction torque testing fixture for easy clamping according to claim 1, characterized in that: The clamping groove (20) is arranged in a triangular structure.
5. The friction torque testing fixture for easy clamping according to claim 1, characterized in that: The movable seat (17) has a slot (21) inside and a corresponding locking block is provided at the corresponding position of the clamp (19).
6. The friction torque testing fixture for easy clamping according to claim 1, characterized in that: The clamp (19) is made of an elastic material.