Friction torque testing machine for cylindrical roller bearing

Abstract

The utility model belongs to the technical field of bearing testing, and particularly relates to a cylindrical roller bearing friction torque testing machine, which comprises a base, a fixing frame fixedly mounted at the top of the base, a testing motor fixedly mounted on one side of the fixing frame, a rotating shaft arranged at one end of the testing motor, a bearing to be tested arranged on the rotating shaft, and a temperature sensor fixedly mounted at the top of the bearing to be tested. A display control panel is fixedly installed on one side of the fixing frame, a torquemeter is fixedly installed on the top of the base, and a supporting testing mechanism is fixedly installed on the top of the base. According to the utility model, the hydraulic cylinder, the support sleeve, the temperature sensor and the torquemeter are matched for use, the pressure sensor is arranged in the support sleeve, and acting forces of different magnitudes are applied through the hydraulic cylinder, so that the change conditions of friction torque values and temperature values of the bearing to be detected under the acting forces of different magnitudes can be conveniently detected, and the operation and use are relatively convenient; the to-be-tested bearing can be tested without manually applying different acting forces, so that the test working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing testing, in particular to a cylindrical roller bearing friction torque testing machine. Background Art

[0002] Bearing friction torque is a key performance parameter for bearings. It directly affects the bearing's operating resistance and energy loss during use. Excessive friction torque not only causes the bearing to heat up too quickly, accelerating lubricant degradation, but also increases bearing surface wear, shortening the bearing's service life. Because cylindrical roller bearings can only withstand radial loads, a radial load must be applied when measuring their friction torque performance.

[0003] The existing technology has the following deficiencies: The prior art publication number is CN202210541142.3, a large radial load cylindrical roller bearing friction torque testing machine, including a frame, a spindle box, a horizontally arranged core shaft, a balance beam and a support seat, the support seat and the spindle box are respectively installed on the frame, the two ends of the core shaft are respectively rotatably installed on the support seat and the spindle box, the bearing to be tested is sleeved on the core shaft, the balance beam is sleeved on the bearing to be tested, a force rod is installed on the balance beam, a tension sensor is connected to the force rod, and hanging points are respectively provided on both sides of the balance beam, the line connecting the centers of the hanging points passes through the axis of the core shaft, and the weights for loading are symmetrically hung on the hanging points.

[0004] Although the above-mentioned equipment can test the friction torque value of the bearing when in use, its overall device structure is relatively complex. When different forces are required to test the bearing to be tested, weights need to be added or subtracted manually, which is cumbersome to operate and use, resulting in low test efficiency and inconvenience for better work use. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a cylindrical roller bearing friction torque testing machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a cylindrical roller bearing friction torque testing machine, comprising a base, a fixing frame fixedly installed on the top of the base, a test motor fixedly installed on one side of the fixing frame, a rotating shaft provided at one end of the test motor, a bearing to be tested provided on the rotating shaft, a temperature sensor fixedly installed on the top of the bearing to be tested, a display control panel fixedly installed on one side of the fixing frame, a torque meter fixedly installed on the top of the base, and a supporting test mechanism fixedly installed on the top of the base.

[0007] As a preferred technical solution of the present invention, the test motor is fixedly mounted on the back of the fixing frame by means of bolts, and the test motor is electrically connected to the display control panel via a wire.

[0008] As an optimal technical solution of the present utility model, the rotating shaft includes an inner limiting ring, an outer limiting ring and a threaded connecting rod. The rotating shaft is provided with an inner limiting ring, one end of the rotating shaft is provided with an outer limiting ring, one end of the outer limiting ring is provided with a threaded connecting rod, one end of the rotating shaft is provided with a threaded hole, the outer diameter of the threaded connecting rod is adapted to the inner diameter of the threaded hole, and the threaded connecting rod is fixedly connected to the threaded hole by threaded rotation.

[0009] As a preferred technical solution of the present invention, the temperature sensor is electrically connected to the display control panel via a wire.

[0010] As a preferred technical solution of the present invention, the torque meter is fixedly mounted on the top of the base by bolts, the torque meter is electrically connected to the display control panel via a wire, and the test end of the torque meter is connected to the inner ring of the bearing to be tested.

[0011] As an optimal technical solution of the present invention, the support test mechanism includes a hydraulic cylinder, a mounting sleeve, a support sleeve and a threaded connecting column. The hydraulic cylinder is fixedly installed on the top of the base, and a mounting sleeve is fixedly installed on one end of the hydraulic cylinder. A support sleeve is provided on the top of the mounting sleeve, and a threaded connecting column is provided on the bottom of the support sleeve. A threaded hole is provided inside the mounting sleeve, and the outer diameter of the threaded connecting column is adapted to the inner diameter of the threaded hole. The threaded connecting column is fixedly connected to the threaded hole by threaded rotation.

[0012] As an optimal technical solution of the present invention, the inner diameter of the support sleeve is matched with the outer diameter of the bearing to be tested, the bearing to be tested is limitedly engaged with the support sleeve, and a pressure sensor is provided inside the support sleeve.

[0013] Compared with the prior art, the present invention provides a cylindrical roller bearing friction torque testing machine, which has the following beneficial effects:

[0014] 1. The cylindrical roller bearing friction torque testing machine is used in conjunction with a hydraulic cylinder, a support sleeve, a temperature sensor and a torque meter. At the same time, a pressure sensor is provided inside the support sleeve. By applying forces of different magnitudes through the hydraulic cylinder, the changes in the friction torque value and temperature value of the bearing to be tested under forces of different magnitudes can be conveniently detected. It is easy to operate and use, and there is no need to manually apply different forces to test the bearing to be tested, which is convenient to improve the test efficiency and facilitate better work use.

[0015] 2. The cylindrical roller bearing friction torque testing machine is used in conjunction with a rotating shaft, an inner limit ring, an outer limit ring and a threaded connecting rod. The outer limit ring is fixedly connected to the rotating shaft thread by rotating the threaded connecting rod. The outer limit ring can be easily installed and disassembled by rotating it, thereby facilitating the installation and testing of the bearing to be tested. The support sleeve is fixedly connected to the mounting sleeve thread by rotating the threaded connecting column, thereby facilitating the installation and disassembly of the support sleeve, and conveniently replacing different support sleeves to test bearings of different outer diameters, which can effectively improve its structural practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the base and fixing frame structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the outer limit ring of the utility model;

[0019] Figure 4 This is a structural diagram of the support test mechanism of the utility model.

[0020] In the figure: 1. Base; 2. Fixing frame; 3. Test motor; 4. Rotating shaft; 401. Inner limit ring; 402. Outer limit ring; 403. Threaded connecting rod; 5. Bearing to be tested; 6. Temperature sensor; 7. Display control panel; 8. Torque meter; 9. Support test mechanism; 901. Hydraulic cylinder; 902. Mounting sleeve; 903. Support sleeve; 904. Threaded connecting column. DETAILED DESCRIPTION

[0021] The following will be combined with the 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.

[0022] See also Figure 1-4In this embodiment: a cylindrical roller bearing friction torque testing machine includes a base 1, a fixing frame 2 is fixedly installed on the top of the base 1 for convenient installation of a test motor 3, a test motor 3 is fixedly installed on one side of the fixing frame 2 for easy rotation of a rotating shaft 4, a rotating shaft 4 is provided at one end of the test motor 3 for convenient connection to a bearing 5 to be tested, a bearing 5 to be tested is provided on the rotating shaft 4 for easy testing thereof, a temperature sensor 6 is fixedly installed on the top of the bearing 5 to be tested for easy detection of the test temperature, a display control panel 7 is fixedly installed on one side of the fixing frame 2 for easy control of the overall device, a torque meter 8 is fixedly installed on the top of the base 1 for easy testing of the torque size, and a support test mechanism 9 is fixedly installed on the top of the base 1 for easy support testing of the bearing 5 to be tested.

[0023] In this embodiment, the test motor 3 is fixedly mounted on the back of the fixing frame 2 by bolts, and the test motor 3 is electrically connected to the display control panel 7 through a wire, so as to facilitate its control and rotation of the shaft 4;

[0024] In this embodiment, the rotating shaft 4 includes an inner limiting ring 401, an outer limiting ring 402 and a threaded connecting rod 403. The inner limiting ring 401 is provided on the rotating shaft 4, and an outer limiting ring 402 is provided at one end of the rotating shaft 4. A threaded connecting rod 403 is provided at one end of the outer limiting ring 402. A threaded hole is provided at one end of the rotating shaft 4. The outer diameter of the threaded connecting rod 403 is adapted to the inner diameter of the threaded hole. The threaded connecting rod 403 is threadedly and fixedly connected to the threaded hole, which facilitates the installation and removal of the outer limiting ring 402 and is convenient for work and use.

[0025] In this embodiment, the temperature sensor 6 is electrically connected to the display control panel 7 via a wire, which facilitates temperature detection and convenient observation and recording;

[0026] In this embodiment, the torque meter 8 is fixedly mounted on the top of the base 1 by bolts. The torque meter 8 is electrically connected to the display control panel 7 via a wire. The test end of the torque meter 8 is connected to the inner ring of the bearing 5 to be tested, so as to facilitate the measurement of the torque of the bearing 5 to be tested and facilitate statistical data.

[0027] In this embodiment, the support test mechanism 9 includes a hydraulic cylinder 901, a mounting sleeve 902, a support sleeve 903 and a threaded connection column 904. The hydraulic cylinder 901 is fixedly mounted on the top of the base 1. The mounting sleeve 902 is fixedly mounted on one end of the hydraulic cylinder 901. The top of the mounting sleeve 902 is provided with a support sleeve 903. The bottom of the support sleeve 903 is provided with a threaded connection column 904. A threaded hole is provided inside the mounting sleeve 902. The outer diameter of the threaded connection column 904 is adapted to the inner diameter of the threaded hole. The threaded connection column 904 is threadedly rotated and fixedly connected to the threaded hole, which facilitates the installation and removal of the support sleeve 903 and is convenient for replacement and use.

[0028] In this embodiment, the inner diameter of the support sleeve 903 is adapted to the outer diameter of the bearing to be tested 5, the bearing to be tested 5 is limited and clamped with the support sleeve 903, and a pressure sensor is provided inside the support sleeve 903 to facilitate the limiting and fixing of the outer ring of the bearing to be tested 5, thereby facilitating testing.

[0029] The working principle and usage process of the present invention are as follows: during the test of the bearing 5 to be tested, the operator can disassemble it by rotating the outer limit ring 402, and then install the bearing 5 to be tested and dock it on the rotating shaft 4, and at the same time install the outer limit ring 402 to limit and fix the bearing 5 to be tested, and by connecting the test end of the torque meter 8 with the inner ring of the bearing 5 to be tested and controlling the hydraulic cylinder 901 to work, the support sleeve 903 can be pushed to limit and support the outer ring of the bearing 5 to be tested, and different sizes of thrust can be applied to the bearing 5 to be tested by working the hydraulic cylinder 901, and then by driving the test motor 3 to work, the rotating shaft 4 can be rotated to drive the inner ring of the bearing 5 to be tested to rotate, so as to facilitate the testing work and be convenient to operate and use.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cylindrical roller bearing friction torque tester, comprising a base (1), a fixing frame (2) fixedly mounted on the top of the base (1), and a test motor (3) fixedly mounted on one side of the fixing frame (2), characterized in that: A rotating shaft (4) is provided at one end of the test motor (3), a bearing to be tested (5) is provided on the rotating shaft (4), a temperature sensor (6) is fixedly mounted on the top of the bearing to be tested (5), a display control panel (7) is fixedly mounted on one side of the fixing frame (2), a torque meter (8) is fixedly mounted on the top of the base (1), and a supporting test mechanism (9) is fixedly mounted on the top of the base (1).

2. The cylindrical roller bearing friction torque testing machine according to claim 1, characterized in that: The test motor (3) is fixedly mounted on the back of the fixing frame (2) by means of bolts, and the test motor (3) is electrically connected to the display control panel (7) via a wire.

3. The cylindrical roller bearing friction torque testing machine according to claim 1, characterized in that: The rotating shaft (4) comprises an inner limiting ring (401), an outer limiting ring (402) and a threaded connecting rod (403), wherein the rotating shaft (4) is provided with an inner limiting ring (401), one end of the rotating shaft (4) is provided with an outer limiting ring (402), one end of the outer limiting ring (402) is provided with a threaded connecting rod (403), one end of the rotating shaft (4) is provided with a threaded hole, the outer diameter of the threaded connecting rod (403) is adapted to the inner diameter of the threaded hole, and the threaded connecting rod (403) is threadedly rotatably fixedly connected to the threaded hole.

4. The cylindrical roller bearing friction torque testing machine according to claim 1, characterized in that: The temperature sensor (6) is electrically connected to the display control panel (7) via a wire.

5. The cylindrical roller bearing friction torque testing machine according to claim 1, characterized in that: The torque meter (8) is fixedly mounted on the top of the base (1) by means of bolts. The torque meter (8) is electrically connected to the display control panel (7) via a wire. The test end of the torque meter (8) is connected to the inner ring of the bearing (5) to be tested.

6. The cylindrical roller bearing friction torque testing machine according to claim 1, characterized in that: The support test mechanism (9) comprises a hydraulic cylinder (901), a mounting sleeve (902), a support sleeve (903) and a threaded connection column (904), wherein the hydraulic cylinder (901) is fixedly mounted on the top of the base (1), a mounting sleeve (902) is fixedly mounted on one end of the hydraulic cylinder (901), a support sleeve (903) is provided on the top of the mounting sleeve (902), a threaded connection column (904) is provided on the bottom of the support sleeve (903), a threaded hole is provided inside the mounting sleeve (902), an outer diameter of the threaded connection column (904) is adapted to an inner diameter of the threaded hole, and the threaded connection column (904) is threadedly and fixedly connected to the threaded hole.

7. The cylindrical roller bearing friction torque testing machine according to claim 6, characterized in that: The inner diameter of the support sleeve (903) is adapted to the outer diameter of the bearing to be tested (5), the bearing to be tested (5) and the support sleeve (903) are position-limitingly engaged, and a pressure sensor is provided inside the support sleeve (903).

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