A conical roller bearing pairing test system

Abstract

The utility model relates to a kind of taper roller bearing pairing experimental system, comprising: system host computer, bearing pairing experimental unit is provided in system host computer, pairing bearing main shaft is equipped in the center of bearing pairing experimental unit, bearing pairing experimental unit includes: axial force loading device, pre-tightening force detection mechanism, displacement detection mechanism, loading end experimental bearing and right side experimental bearing of back-to-back (DB) pairing structure, one end of pairing bearing main shaft extends to the outer end of entire bearing pairing experimental unit and is equipped with axial force loading device, the outer end of loading end experimental bearing is equipped with displacement detection mechanism;Pre-tightening force detection mechanism is set on pairing bearing main shaft;The accurate measurement of bearing pairing parameters such as pre-tightening force and displacement can be realized, the relationship curve of the displacement amount of experimental bearing inner ring with the change of pairing bearing pre-tightening force can be obtained by software system, compared with simulation result, to verify the accuracy of pairing pre-tightening force-displacement, and then realize the principle verification of rolling bearing pairing optimization method.

Description

Technical Field

[0001] This utility model relates to a tapered roller bearing pairing test system, which realizes high-precision measurement and precise control of bearing preload and displacement, and belongs to the field of bearing technology. Background Technology

[0002] In the application of rolling bearings, the pairing, installation and debugging are mostly done based on experience, which makes it impossible to accurately obtain pairing parameters, such as force and displacement, and to achieve high-precision measurement and precise control of bearing preload and displacement. When it comes to the pairing performance of rolling bearings, it is impossible to verify the principle of pairing optimization methods. Utility Model Content

[0003] In view of the above-mentioned technical problems, this utility model provides a tapered roller bearing pairing test system to achieve high-precision measurement and precise control of bearing preload and displacement, and to verify the principle of the pairing optimization method.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a tapered roller bearing pairing test system, comprising: a system host, wherein a bearing pairing test unit is provided in the system host, and a pairing bearing spindle is provided at the axial center inside the bearing pairing test unit. One end of the pairing bearing spindle is the axial force loading and detection end of the bearing pairing test unit, and the other end is a fixed end connected to the bearing pairing test unit. The fixed end of the pairing bearing spindle is connected to the bearing pairing test unit through a base; the bearing pairing test unit includes: an axial force loading device, a preload detection mechanism, a displacement detection mechanism, a test tapered roller bearing, a bushing, and a casting unit; the test tapered roller bearing... The roller bearings are a DB-paired structure with a left and a right experimental bearing. Both the left and right experimental bearings are fitted onto the main shaft of the paired bearings. The axial force loading and detection end of the main shaft of the paired bearings extends to the outer end of the entire bearing pairing experimental unit and is equipped with an axial force loading device. The left experimental bearing, which is closer to the axial force loading device, is the loading end experimental bearing. A displacement detection mechanism is set at the outer end of the loading end experimental bearing. A preload detection mechanism is set on the main shaft of the paired bearings between the loading end experimental bearing and the right experimental bearing. The casting unit includes a casting cover and a casting seat. A bushing is set around the experimental tapered roller bearing, and the bushing is embedded between the casting cover and the casting seat. Furthermore, the mating bearing spindle is designed with a three-stage stepped structure, consisting of a first-stage stepped section, a second-stage stepped section, and a third-stage stepped section from the outer end to the inner end of the mating bearing spindle, with the diameter of the third-stage stepped section increasing sequentially. A first shoulder is formed between the first-stage and second-stage stepped sections, and a second shoulder is formed between the second-stage and third-stage stepped sections. The experimental tapered roller bearing is installed on the second-stage stepped section. Furthermore, the axial force loading device adopts a concave loading column, which is sleeved on the first-stage stepped section of the mating bearing spindle and pressed against the outer end face of the inner ring of the loading end test bearing through its end face. Furthermore, a graphite copper sleeve is provided between the inner diameter of the loading column and the outer diameter of the first-stage stepped section, and a retaining spring groove is provided on the surface of the inner diameter of the loading column, and a retaining spring is installed in the retaining spring groove. Furthermore, the displacement detection mechanism includes three axial displacement sensors, which together with the loading end experimental bearing form three measurement points; the ends of the three axial displacement sensors are all resting on the outer end face of the inner ring of the loading end experimental bearing, and the three measurement points are distributed at 120° on the inner ring end face of the loading end experimental bearing. The displacement detection mechanism also includes a displacement measuring plate, which has mounting holes for three axial displacement sensors. Sensor locking brackets are installed in the mounting holes. The axial displacement sensors are installed in the displacement measuring plate through the sensor locking brackets. Each axial displacement sensor is connected to the electrical control cabinet outside the bearing pairing test unit through a connecting wire. Furthermore, the axial displacement sensor is a Keyence GT2-P12K contact displacement sensor with a stroke of 12mm and a resolution of 0.1μm.

[0005] Furthermore, the preload detection mechanism includes: an annular pressure sensor, an outer ring washer, an inner ring washer, a spacer ring, and a nylon ring; the annular pressure sensor is positioned between the loading end experimental bearing and the right-side experimental bearing via the spacer ring and the nylon ring; the inner diameter of the spacer ring mates with the main shaft of the mating bearing, and the outer diameter of the spacer ring is separated from the inner diameter of the annular pressure sensor by the nylon ring; the outer ring washer is bonded to the left side of the annular pressure sensor, so that the outer ring of the loading end experimental bearing presses against the outer ring washer of the sensor, and the inner ring washer is bonded to the right side of the annular pressure sensor, so that the outer ring of the right-side experimental bearing presses against the inner ring washer of the sensor; Furthermore, the ring pressure sensor is a customized pressure sensor, model HY 606, with an outer diameter of 270mm, an inner diameter of 210mm, a thickness of 45mm, a range of 100kN, and an accuracy of 0.5%FS.

[0006] Furthermore, the outer end face of the inner ring of the experimental bearing on the right is abutted against the second shoulder of the mating bearing spindle by setting a disassembly ring. The disassembly ring facilitates the disassembly of the bearing and avoids directly pressing the bearing during disassembly.

[0007] Furthermore, the loading end test bearing and the right side test bearing are of model number HH926749 / HH926710.

[0008] Furthermore, the casting cover and the bushing, as well as the casting base and the bushing, are all fixed together with screws.

[0009] Furthermore, the fixed end of the mating bearing spindle is connected to the base via hexagon socket screws, and the base is connected to the bearing mating experimental unit via hexagon socket screws.

[0010] The main purpose of the above structural design in this scheme is to construct a back-to-back (DB) pairing structure for tapered roller bearings. The experiment is conducted using an axial loading device and a displacement sensor on the bearing pairing test unit to test the relationship between axial preload and inner ring displacement. An axial force is applied to the loading column, and the bearing preload is tested by reducing the inner ring spacing (feed resolution 0.1μm).

[0011] The bearing pairing test unit in this scheme is located in the main system unit. The peripheral mechanism is set outside the main system unit and together with the peripheral mechanism constitutes the entire test system. A spindle servo motor is located outside the bearing pairing test unit. The servo motor is installed in the spindle motor driver cabinet outside the main system unit. An electrical control cabinet is located near the spindle motor driver cabinet. The main system unit is connected to the electrical control cabinet via a cable, and the spindle motor driver cabinet is connected to the electrical control cabinet via a cable. A hydraulic station is also located outside the main system unit and is connected to the electrical control cabinet via a cable.

[0012] The beneficial effects of the technical solution of this utility model are: This system can accurately measure bearing pairing parameters such as preload and displacement. The pairing preload is measured using a customized ring pressure sensor to obtain the inner ring displacement of the bearing. The software system can generate the relationship curve between the inner ring displacement of the experimental bearing and the preload of the paired bearing, i.e., the load-displacement curve of the bearing. By comparing the curve with the simulation results, the accuracy of the pairing preload-displacement curve can be verified, thereby realizing the principle verification of the rolling bearing pairing optimization method. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the bearing pairing experimental unit in the experimental system of this utility model.

[0014] Figure 2 This is a schematic diagram of the connection structure of the tapered roller bearing pairing experimental system of this utility model.

[0015] Figure 3 This is a cross-sectional view of the bearing pairing test unit.

[0016] Figure 4 This is an exploded view of the core structure of the bearing pairing experimental unit.

[0017] Figure 5 This is a screenshot of the paired displacement sensor in the software system of this solution.

[0018] Figure 6 This is a force-displacement curve (axial force) of the bearing generated by the software system.

[0019] In the diagram, 1. System host, 2. Bearing pairing experimental unit, 3. Paired bearing spindle, 4. Base, 5. Bushing, 6. Loading end experimental bearing, 7. Right side experimental bearing, 8. Casting cover, 9. Casting seat, 6.1. Outer end face of the inner ring of the loading end experimental bearing, 10. Loading column, 11. Graphite copper sleeve, 12. Snap ring, 13. Axial displacement sensor, 14. Displacement measuring plate, 15. Sensor locking bracket, 16. Ring pressure sensor, 17. Sensor outer ring washer, 18. Sensor inner ring washer, 19. Spacer ring, 20. Nylon ring, 21. Disassembly ring, 22. Hex socket screw, 23. Spindle motor driver cabinet, 24. Electrical control cabinet, 25. Cable, 26. Hydraulic station. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] like Figure 1-6As an embodiment of this utility model, a tapered roller bearing pairing test system includes: a system host 1, in which a bearing pairing test unit 2 is provided. A pairing bearing spindle 3 is provided axially at the center of the bearing pairing test unit 2. One end of the pairing bearing spindle 3 is the axial force loading and detection end of the bearing pairing test unit 2, and the other end is a fixed end connected to the bearing pairing test unit 2. The fixed end of the pairing bearing spindle 3 is connected to the bearing pairing test unit 2 via a base 4. The bearing pairing test unit 2 includes: an axial force loading device, a preload detection mechanism, a displacement detection mechanism, a test tapered roller bearing, a bushing 5, and a casting unit. The test tapered roller bearing is a D... The B-type pairing structure includes a left-side experimental bearing and a right-side experimental bearing 7, both of which are mounted on the pairing bearing spindle 3. The axial force loading and detection end of the pairing bearing spindle 3 extends to the outer end of the entire bearing pairing experimental unit 2 and is equipped with an axial force loading device. The left-side experimental bearing, which is closer to the axial force loading device, is the loading end experimental bearing 6, and a displacement detection mechanism is provided at the outer end of the loading end experimental bearing 6. A preload detection mechanism is provided on the pairing bearing spindle 3 between the loading end experimental bearing 6 and the right-side experimental bearing 7. The casting unit includes a casting cover 8 and a casting seat 9. A bushing 5 is provided around the experimental tapered roller bearing, and the bushing 5 is embedded between the casting cover 8 and the casting seat 9. Furthermore, the mating bearing spindle 3 is designed with a three-stage stepped structure, consisting of a first-stage stepped section, a second-stage stepped section, and a third-stage stepped section from the outer end to the inner end, with the diameter of the third-stage stepped section increasing sequentially. A first shoulder is formed between the first-stage and second-stage stepped sections, and a second shoulder is formed between the second-stage and third-stage stepped sections. The experimental tapered roller bearing is installed on the second-stage stepped section. Furthermore, the axial force loading device adopts a concave loading column 10, which is sleeved on the first-stage stepped section of the mating bearing spindle 3 and presses against the outer end face 6.1 of the inner ring of the loading end test bearing through its end face to apply axial load to the bearing. Furthermore, a graphite copper sleeve 11 is provided between the inner diameter of the loading column 10 and the outer diameter of the first-stage stepped section, and a retaining spring groove is provided on the inner diameter surface of the loading column 10, in which a retaining spring 12 is installed; the graphite copper sleeve 11 is provided for loading guidance, achieving self-lubrication and reducing friction; the retaining spring 12 is provided to fix the graphite copper sleeve 11 inside the loading column 10.

[0022] Furthermore, the displacement detection mechanism includes three axial displacement sensors 13, which together with the loading end experimental bearing 6 form three measurement points; the ends of the three axial displacement sensors 13 are all resting on the outer end face 6.1 of the inner ring of the loading end experimental bearing, and the three measurement points are distributed at 120° on the inner ring end face of the loading end experimental bearing 6. The displacement detection mechanism also includes a displacement measuring plate 14, on which three axial displacement sensors 13 are provided for mounting holes. Sensor locking brackets 15 are provided in the mounting holes. The axial displacement sensors 13 are mounted in the displacement measuring plate 14 through the sensor locking brackets 15. Each axial displacement sensor 13 is connected to the electrical control cabinet 24 outside the bearing pairing experimental unit 2 through a connecting wire. Furthermore, the axial displacement sensor 13 is a Keyence GT2-P12K contact displacement sensor with a stroke of 12mm and a resolution of 0.1μm.

[0023] In another embodiment of this solution, the axial displacement sensor 13 is a non-contact displacement sensor, which is an eddy current displacement sensor.

[0024] Furthermore, the preload detection mechanism includes: an annular pressure sensor 16, an outer ring washer 17, an inner ring washer 18, a spacer ring 19, and a nylon ring 20; the annular pressure sensor 17 is positioned between the loading end experimental bearing 6 and the right-side experimental bearing 7 via the spacer ring 19 and the nylon ring 20; the inner diameter of the spacer ring 19 mates with the main shaft 3 of the mating bearing, and the outer diameter of the spacer ring 19 is separated from the inner diameter of the annular pressure sensor 17 by the nylon ring 20; the outer ring washer 17 is bonded to the left side of the annular pressure sensor 17, so that the outer ring of the loading end experimental bearing 6 presses on the outer ring washer 17; the inner ring washer 18 is bonded to the right side of the annular pressure sensor 17, so that the outer ring of the right-side experimental bearing 7 presses on the inner ring washer 18. Furthermore, the ring pressure sensor 17 is a customized pressure sensor, model HY 606, with an outer diameter of 270mm, an inner diameter of 210mm, a thickness of 45mm, a range of 100kN, and an accuracy of 0.5%FS.

[0025] Furthermore, the outer end face of the inner ring of the experimental bearing 7 on the right side is abutted against the second shoulder of the mating bearing spindle 3 by setting a disassembly ring 21. By setting the disassembly ring 21, it is convenient to disassemble the bearing and avoids directly pressing the bearing during disassembly.

[0026] Furthermore, the loading end experimental bearing 6 and the right side experimental bearing 7 are of model number HH926749 / HH926710.

[0027] Furthermore, the casting cover 8 and the bushing 5, as well as the casting base 9 and the bushing 5, are all fixed together with screws.

[0028] Furthermore, the fixed end of the mating bearing spindle 3 is connected to the base 4 by an internal hex screw 22, and the base 4 is connected to the bearing mating experimental unit 2 by the internal hex screw 22.

[0029] The main purpose of the above-mentioned structural design is to construct a back-to-back (DB) pairing structure for tapered roller bearings. The axial loading device and displacement sensor on the bearing pairing test unit are used to test the relationship between axial preload and inner ring displacement. An axial force is applied to the loading column 10, and the bearing preload is tested by reducing the inner ring spacing (feed resolution 0.1μm).

[0030] In this scheme, the bearing pairing experimental unit 2 is located within the system host 1. A peripheral mechanism is located outside the system host 1, forming the entire experimental system. A spindle servo motor is located outside the bearing pairing experimental unit 2, and the servo motor is installed in a spindle motor driver cabinet 23 outside the system host 1. An electrical control cabinet 24 is located near the spindle motor driver cabinet 23. The system host 1 is connected to the electrical control cabinet 24 via a cable 25, and the spindle motor driver cabinet 23 is also connected to the electrical control cabinet 24 via a cable 25. A hydraulic station 26 is also located outside the system host 1, and the hydraulic station 26 is connected to the electrical control cabinet 24 via a cable 25. It should be noted that the peripheral mechanism outside the system host 1 in this scheme is the same as the peripheral mechanism design of the system host in the previously filed patent document (application number 202411961016.9, titled: Tapered Roller Bearing Assembly and Adjustment Experimental System and Method). This scheme can directly reference this structure.

[0031] The method of the tapered roller bearing pairing test system with the above-described structure in this scheme uses a software system to generate the load-displacement curve of the bearing based on the hardware structure, and compares it with the simulation results to verify the accuracy of the pairing preload-displacement. The specific measurement method is as follows: A high-precision contact displacement sensor 13 was installed on the outer end face 6.1 of the inner ring of the experimental bearing at the loading end for static measurement. The position of the axial displacement sensor 13 was adjusted so that the initial values ​​of all axial displacement sensors 13 were basically the same and in good operating condition. Then, the load was gradually applied by controlling the axial force loading device. By accessing the "Paired Displacement Sensor Screen" in the software system, the displacement measurements at three evenly distributed positions around the circumference of the tapered roller bearing can be observed. This screen is used for sensor calibration, adjusting the positions of all sensors 13 to ensure their initial values ​​are approximately consistent (around 3000µm) and in good operating condition. Then, the load is gradually applied. Due to the clearance between the inner and outer rings of the tapered roller bearing, an initial preload is typically required to eliminate this clearance and achieve zero contact. After eliminating the bearing clearance, clicking "Relative Position" resets all displacement sensor 13 values ​​to zero. Then, the average value of the displacement changes at the three points is calculated. The paired bearing test software screen is shown below. Figure 5As shown, the average displacement of three points on the inner circle of the loading end is given, and the relationship curve between the preload and the displacement can be displayed, where the preload is measured by a custom-designed annular pressure sensor 16.

[0032] It should be noted that, Figure 6 The curve shown is the relationship between axial preload and displacement. The paired load in this scheme refers to the axial preload, and the measured displacement is the axial displacement. The relationship between the two is verified by the simulation results. The software of this system is implemented by LabVIEW programming language, including "sensor screen", which realizes the measurement of displacement and the display of force-displacement relationship.

[0033] As another embodiment of this solution, the core structure of the bearing pairing test unit of this solution, namely the pairing bearing spindle 3, the experimental tapered roller bearing, the axial force loading device, the preload detection mechanism, and the displacement detection mechanism, can be separated from the bearing pairing test unit 2 and subjected to vertical off-machine testing.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0039] The above-listed embodiments are merely preferred embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A test system for pairing tapered roller bearings, characterized in that, The system includes: a main unit containing a bearing pairing test unit. The bearing pairing test unit has a pairing bearing spindle at its axial center. One end of the spindle serves as the axial force loading and detection end of the bearing pairing test unit, and the other end is a fixed end connected to the bearing pairing test unit. The fixed end of the spindle is connected to the bearing pairing test unit via a base. The bearing pairing test unit includes: an axial force loading device, a preload detection mechanism, a displacement detection mechanism, an experimental tapered roller bearing, a bushing, and a casting unit. The experimental tapered roller bearing consists of a DB pairing structure with a left experimental bearing and a right experimental bearing. The side test bearing, left test bearing, and right test bearing are all fitted on the mating bearing spindle. The axial force loading and detection end of the mating bearing spindle extends to the outer end of the entire bearing mating test unit and is equipped with an axial force loading device. The left test bearing, which is closer to the axial force loading device, is the loading end test bearing. The outer end of the loading end test bearing is equipped with a displacement detection mechanism. A preload detection mechanism is set on the mating bearing spindle between the loading end test bearing and the right test bearing. The casting unit includes a casting cover and a casting seat. A bushing is set on the periphery of the test tapered roller bearing. The bushing is embedded between the casting cover and the casting seat.

2. The tapered roller bearing pairing test system according to claim 1, characterized in that: The mating bearing spindle is designed with a three-stage stepped structure. From the outer end to the inner end of the mating bearing spindle, there are three stages: a first-stage stage, a second-stage stage, and a third-stage stage, with the diameter of the third-stage stage increasing sequentially. A first shoulder is formed between the first-stage and second-stage stages, and a second shoulder is formed between the second-stage and third-stage stages. The experimental tapered roller bearing is installed on the second-stage stage.

3. The tapered roller bearing pairing test system according to claim 2, characterized in that: The axial force loading device adopts a concave loading column, which is sleeved on the first-stage step of the mating bearing spindle and pressed against the outer end face of the inner ring of the experimental bearing at the loading end through its end face.

4. The tapered roller bearing pairing test system according to claim 3, characterized in that: A graphite copper sleeve is provided between the inner diameter of the loading column and the outer diameter of the first-stage stepped section, and a retaining spring groove is provided on the surface of the inner diameter of the loading column, and a retaining spring is installed in the retaining spring groove.

5. The tapered roller bearing pairing test system according to claim 1, characterized in that: The displacement detection mechanism includes three axial displacement sensors, which together with the loading end experimental bearing form three measurement points. The ends of the three axial displacement sensors are all placed on the outer end face of the inner ring of the loading end experimental bearing, and the three measurement points are distributed at 120° on the inner ring end face of the loading end experimental bearing.

6. The tapered roller bearing pairing test system according to claim 5, characterized in that: The displacement detection mechanism also includes a displacement measuring plate, which has mounting holes for three axial displacement sensors. Sensor locking brackets are installed in the mounting holes. The axial displacement sensors are installed in the displacement measuring plate through the sensor locking brackets. Each axial displacement sensor is connected to the electrical control cabinet outside the bearing pairing test unit through a connecting wire.

7. The tapered roller bearing pairing test system according to claim 5, characterized in that: The axial displacement sensor is a Keyence GT2-P12K contact displacement sensor with a stroke of 12mm and a resolution of 0.1μm.

8. The tapered roller bearing pairing test system according to claim 1, characterized in that: The preload detection mechanism includes: an annular pressure sensor, an outer ring washer, an inner ring washer, a spacer ring, and a nylon ring; the annular pressure sensor is positioned between the loading end experimental bearing and the right-side experimental bearing via the spacer ring and the nylon ring; the inner diameter of the spacer ring mates with the main shaft of the mating bearing, and the outer diameter of the spacer ring is separated from the inner diameter of the annular pressure sensor by the nylon ring; the outer ring washer is bonded to the left side of the annular pressure sensor, so that the outer ring of the loading end experimental bearing presses against the outer ring washer of the sensor, and the inner ring washer is bonded to the right side of the annular pressure sensor, so that the outer ring of the right-side experimental bearing presses against the inner ring washer of the sensor.

9. The tapered roller bearing pairing test system according to claim 8, characterized in that: The ring pressure sensor is a custom-designed pressure sensor with an outer diameter of 270 mm, an inner diameter of 210 mm, a thickness of 45 mm, a range of 100 kN, and an accuracy of 0.5% FS.

10. The tapered roller bearing pairing test system according to claim 1, characterized in that: The bearing pairing test unit is located in the main system unit. The main system unit is equipped with peripheral mechanisms, which together constitute the entire test system. A spindle servo motor is located outside the bearing pairing test unit. The servo motor is installed in the spindle motor driver cabinet outside the main system unit. An electrical control cabinet is located near the spindle motor driver cabinet. The main system unit is connected to the electrical control cabinet via a cable, and the spindle motor driver cabinet is also connected to the electrical control cabinet via a cable. A hydraulic station is also located outside the main system unit, and the hydraulic station is connected to the electrical control cabinet via a cable.

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