A bearing set friction torque measurement test system

Abstract

The application discloses a bearing group friction torque measurement test system, which comprises a bearing platform, a first static pressure support oil cylinder and a second static pressure support oil cylinder are arranged on the upper portion of the bearing platform, support flanges are respectively arranged on the inner sides of the first static pressure support oil cylinder and the second static pressure support oil cylinder, flow guide covers are arranged on the inner sides of the two support flanges, a rotating shaft is arranged on the inner sides of the two support flanges, a measured bearing is fixed between the outer side of the rotating shaft and the support flange, a rotating oil distributor is arranged on the inner side of the rotating shaft, the support shaft of the first static pressure support oil cylinder is connected with the rotating oil distributor, oil holes are arranged on the inner side of the support shaft of the first static pressure support oil cylinder, lubricating oil passes through the oil holes, enters the inner side of the rotating shaft through the rotating oil distributor, and then lubricates the measured bearing through the flow guide covers on the two sides of the rotating shaft. In the application, two measured bearings can be fixed, and the torque condition of a single bearing can be measured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing set friction torque measurement, and particularly relates to a bearing set friction torque measurement test system. BACKGROUND

[0002] The bearing friction resistance is an important index affecting the bearing life, and is an important factor affecting the reliability, accuracy and safety of the bearing related system, and is closely related to the application of the high-end technology application occasions and the civil facilities, such as airplane landing gear bearings, gyroscope bearings, satellite antenna bearings, high-speed rail bearings, automobile bearings and the like.

[0003] The bearing set dynamic and static load friction torque measurement test machine is a multifunctional test equipment in the bearing test and detection work at present, and is widely used in various fields, and can accurately detect the dynamic torque and other performance tests of each independent bearing in the bearing set unit under different environments, different loads and different rotating speeds.

[0004] However, the actual application of the bearing is often in the form of a pair of combination, and the bearing set forms a whole to work. Without changing the working condition and the application structure, the existing test equipment can only measure the overall performance of the bearing set as a whole, and the torque of the specific single bearing cannot be measured. SUMMARY

[0005] (I) Technical problem to be solved

[0006] The present application can solve the problem that the existing test equipment can only measure the overall performance of the bearing set as a whole, and the torque of the specific single bearing cannot be measured.

[0007] (II) Technical scheme

[0008] In order to achieve the above purpose, the present application adopts the following technical scheme, a bearing set friction torque measurement test system, comprising a bearing platform, a first static pressure support oil cylinder and a second static pressure support oil cylinder are arranged on the upper part of the bearing platform, a support flange is arranged on the inner side of the first static pressure support oil cylinder and the second static pressure support oil cylinder respectively, a flow guide cover is arranged on the inner side of the two support flanges, a rotating shaft which abuts against the flow guide cover is arranged on the inner side of the two support flanges, a measured bearing is fixed between the outer side of the rotating shaft and the support flange, a rotating oil distributor is arranged on the inner side of one end of the rotating shaft adjacent to the first static pressure support oil cylinder, a support shaft of the first static pressure support oil cylinder is connected with the rotating oil distributor, an oil hole is arranged on the inner side of the support shaft of the first static pressure support oil cylinder, lubricating oil passes through the oil hole, enters the inner side of the rotating shaft through the rotating oil distributor, and lubricates the measured bearing through the flow guide covers on the two sides of the rotating shaft.

[0009] As a preferred technical scheme of the present application, the upper part of the bearing platform is provided with a rotary driving element, the output end of the rotary driving element is connected with the end of the support shaft of the first static pressure support oil cylinder, the upper part of the bearing platform is provided with a rotating speed sensor, and the detection end of the rotating speed sensor faces the output shaft of the rotary driving element; the rotary driving element drives the measured bearing inner ring to rotate through the support shaft of the first static pressure support oil cylinder, and axial loading is applied to the measured bearing inner ring.

[0010] As a preferred technical scheme of the present application, one end of the support shaft of the second static pressure support oil cylinder is connected with the side of the rotary shaft away from the rotary oil distributor through an anti-rotation inner shaft, the outer side of the other end of the support shaft of the first static pressure support oil cylinder and the second static pressure support oil cylinder is provided with a lever swing arm, the upper part of the bearing platform is provided with two adjustable columns, the upper part of each of the two adjustable columns is provided with a first load sensor, and the upper part of each of the two first load sensors is connected with one side of the two lever swing arms.

[0011] As a preferred technical scheme of the present application, the adjustable column comprises a threaded sleeve installed on the upper part of the bearing platform and a connecting rod threadedly installed on the upper part of the threaded sleeve, and the first load sensor is installed on the upper part of the connecting rod.

[0012] As a preferred technical scheme of the present application, the lower part of the support flange is provided with an arc-shaped support, the arc-shaped support is installed on the upper part of the bearing platform, and three side parts of the arc-shaped support are respectively provided with vibration sensors for detecting the displacement of the center of mass.

[0013] As a preferred technical scheme of the present application, the arc-shaped support comprises an arc plate, a guard plate installed on the side part of the arc plate, and a support leg installed on the lower part of the arc plate, two of the three vibration sensors are respectively located on the upper side part and the lower side part of the arc plate, and the other vibration sensor is located on the upper side part of the guard plate.

[0014] As a preferred technical scheme of the present application, the upper part of the bearing platform is provided with a support frame, the side part of the support frame is provided with a transverse actuator, and the output end of the transverse actuator is provided with a second load sensor; the second load sensor is connected with the end of the support shaft of the second static pressure support oil cylinder, and transverse loading is applied to the rotary shaft through the second static pressure support oil cylinder and the anti-rotation inner shaft.

[0015] As a preferred technical scheme of the present application, the output shaft of the transverse actuator is coaxially arranged with the support shaft of the second static pressure support oil cylinder.

[0016] As a preferred technical scheme of the present application, a radial actuator is installed in the middle of the bearing platform, an output end of the radial actuator is installed with a fork rod which passes through the middle of the bearing platform, and an inner side of the fork rod is rotatably installed with a compression roller; the compression roller is driven to move upward by the radial actuator and applies radial loading to the rotating shaft.

[0017] As a preferred technical scheme of the present application, the height of the highest point of the compression roller is higher than the height of the highest point of the fork rod, and the outer circumferential line of the highest point of the compression roller is in the same vertical plane as the outer circumferential line of the lowest point of the rotating shaft.

[0018] (Three) beneficial effects

[0019] 1. The bearing group friction torque measurement test system provided by the present application can test two measured bearings, measure the torque of a single bearing, and lubricate the two measured bearings to prevent insufficient lubrication from affecting torque measurement.

[0020] 2. The bearing group friction torque measurement test system provided by the present application can drive the support shaft of the first static pressure support oil cylinder to rotate through the operation of the rotary drive member, thereby driving the measured bearing to rotate, and measure the rotational speed of the output shaft of the rotary drive member through a rotational speed sensor, which is the rotational speed of the measured bearing, effectively achieving rotational speed measurement.

[0021] 3. The bearing group friction torque measurement test system provided by the present application can test the torque of the lever swing arm through two first load sensors, which is the torque of the measured bearing, effectively achieving torque measurement.

[0022] 4. The bearing group friction torque measurement test system provided by the present application can calculate the center of mass displacement of the measured bearing by measuring the vibration through the vibration sensors installed on the three sides of the arc-shaped support.

[0023] 5. The bearing group friction torque measurement test system provided by the present application can provide horizontal loading and radial loading to the rotating shaft through the horizontal actuator and the radial actuator, and can measure the friction torque of each test bearing independently through the outer ring of each measured bearing. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] Figure 1 is a first perspective view of the present application;

[0026] Figure 2 is a second perspective view of the present application;

[0027] Figure 3 is a front view of the present application;

[0028] Figure 4 is a schematic view of the arc-shaped support and support flange structure of the present application;

[0029] Figure 5 is a schematic view of the rotating shaft structure of the present application;

[0030] Figure 6 is a schematic view of the anti-rotation inner shaft structure of the present application;

[0031] Figure 7 is a schematic view of the adjustable column structure of the present application;

[0032] Figure 8 is a schematic view of the radial actuator and rotating shaft structure of the present application.

[0033] In the drawings: 1, bearing platform; 11, rotating drive; 12, rotating speed sensor; 2, first static pressure support oil cylinder; 13, support frame; 131, transverse actuator; 132, second load sensor; 141, radial actuator; 142, fork rod; 143, pressure roller; 21, lever swing arm; 22, adjustable column; 221, threaded sleeve; 222, connecting rod; 23, first load sensor; 3, second static pressure support oil cylinder; 31, anti-rotation inner shaft; 4, support flange; 41, arc-shaped support; 411, arc plate; 412, guard plate; 413, support leg; 42, vibration sensor; 5, flow guide cover; 6, rotating shaft; 7, bearing to be measured; 8, rotating oil distributor; 9, oil hole.

[0034] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0037] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings, thus, once an item is defined in one drawing, it is not necessary to further define and explain it in the subsequent drawings.

[0038] In the description of the present application, it should be understood that the terms "longitudinal", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0040] As Figures 1 to 8As shown, a bearing assembly friction torque measurement test system includes a bearing platform 1. A first hydrostatic support cylinder 2 and a second hydrostatic support cylinder 3 are arranged on the upper part of the bearing platform 1. Support flanges 4 are respectively installed on the inner side of the first hydrostatic support cylinder 2 and the second hydrostatic support cylinder 3. A guide cover 5 is installed on the inner side of both support flanges 4. A rotating shaft 6 that abuts against the guide cover 5 is installed on the inner side of both support flanges 4. The bearing under test 7 is fixed between the outer side of the rotating shaft 6 and the support flange 4. A rotating oil distributor 8 is installed on the inner side of the rotating shaft 6 near the first hydrostatic support cylinder 2. One end of the support shaft of the first hydrostatic support cylinder 2 is connected to the rotating oil distributor 8. An oil hole 9 is provided on the inner side of the support shaft of the first hydrostatic support cylinder 2. Lubricating oil passes through the oil hole, enters the inner side of the rotating shaft 6 through the rotating oil distributor 8, and then lubricates the bearing under test 7 through the guide covers 5 on both sides of the rotating shaft 6. In practical use, two support flanges 4 are set up, and the bearings to be tested 7 are installed on the inner side of the two support flanges 4 respectively. The two bearings to be tested 7 are connected by a rotating shaft 6. The two bearings to be tested 7 can be tested to measure the torque of a single bearing. The lubricating oil passes through the oil hole 9, enters the inner side of the rotating shaft 6 through the rotating oil distributor 8, and then lubricates the bearings to be tested 7 through the guide covers 5 on both sides of the rotating shaft 6. Both bearings to be tested 7 can be lubricated to prevent insufficient lubrication from affecting the torque measurement.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, to provide driving power, a rotary drive component 11 is installed on the upper part of the support platform 1. The output end of the rotary drive component 11 is connected to the end of the support shaft of the first hydrostatic support cylinder 2. A speed sensor 12 is installed on the upper part of the support platform 1, with the detection end of the speed sensor 12 facing the output shaft of the rotary drive component 11. In specific use, the rotary drive component 11 drives the inner ring of the tested bearing 7 to rotate through the support shaft of the first hydrostatic support cylinder 2, applying an axial load to the inner ring of the tested bearing 7. It should be understood that the rotary drive component 11 can be a motor or a motor equipped with a reducer, etc.

[0042] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, in order to measure the torque, the support shaft of the second static pressure support oil cylinder 3 is connected to the side of the rotating shaft 6 away from the rotating oil distributor 8 through the anti-rotation inner shaft 31, and the other end of the support shaft of the first static pressure support oil cylinder 2 and the second static pressure support oil cylinder 3 is externally provided with a lever swing arm 21, the upper part of the bearing platform 1 is provided with two adjustable columns 22, the upper parts of the two adjustable columns 22 are provided with first load sensors 23, and the upper parts of the two first load sensors 23 are connected to the sides of the two lever swing arms 21, respectively. In specific arrangement, the adjustable column 22 comprises a threaded sleeve 221 arranged on the upper part of the bearing platform 1, and a connecting rod 222 threadedly arranged on the upper part of the threaded sleeve 221, and the first load sensor 23 is arranged on the upper part of the connecting rod 222. In specific use, the torque of the lever swing arm 21 can be tested through the two first load sensors 23, and the torque of the lever swing arm 21 is the torque of the bearing 7 to be measured, thereby effectively realizing the measurement of the torque.

[0043] As shown in Figure 1 , Figure 2 and Figure 4 , in order to measure the centroid displacement, an arc-shaped support 41 is arranged on the lower part of the support flange 4, the arc-shaped support 41 is arranged on the upper part of the bearing platform 1, and three vibration sensors 42 for detecting the centroid displacement are arranged on the three side parts of the arc-shaped support 41. In addition, the arc-shaped support 41 comprises an arc plate 411, a guard plate 412 arranged on the side part of the arc plate 411, and a support leg 413 arranged on the lower part of the arc plate 411, two of the three vibration sensors 42 are arranged on the upper side part and the lower side part of the arc plate 411, and the other vibration sensor 421 is arranged on the upper side part of the guard plate 412. In specific use, the centroid displacement of the bearing 7 to be measured can be calculated by measuring the vibration, and the displacement of the centroid can be fitted by the vibration detected by the three vibration sensors 42, and then the centroid displacement can be calculated.

[0044] As shown in Figure 1 , Figure 2 and Figure 3 , the upper part of the bearing platform 1 is provided with a support frame 13, the side part of the support frame 13 is provided with a transverse actuator 131, the output end of the transverse actuator 131 is provided with a second load sensor 132, the output shaft of the transverse actuator 131 is coaxially arranged with the support shaft of the second static pressure support oil cylinder 3, and in specific use, the second load sensor 132 is connected to the end of the support shaft of the second static pressure support oil cylinder 3, and transverse loading is applied to the rotating shaft 6 through the second static pressure support oil cylinder 3 and the anti-rotation inner shaft 31. In specific arrangement, the transverse actuator 131 can be selected from an electric cylinder or a pneumatic cylinder.

[0045] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, the middle part of the bearing platform 1 is provided with a radial actuator 141, the output end of the radial actuator 141 is provided with a fork rod 142 penetrating through the middle part of the bearing platform 1, the inner side of the fork rod 142 is rotatably provided with a compression roller 143, the highest point of the compression roller 143 is higher than the highest point of the fork rod 142, and the outer circumferential line of the highest point of the compression roller 143 is in the same vertical plane with the outer circumferential line of the lowest point of the rotating shaft 6. In specific use, the compression roller 143 is driven to move upward by the radial actuator 141, radial loading is applied to the rotating shaft 6, the loading point position can be adjusted in the axial direction, and according to the adjustment distance, radial loading is applied to the measured bearing 7, and a controllable deflection torque is generated at the same time. The radial actuator can be selected from an electric cylinder or a pneumatic cylinder.

[0046] Working principle, in specific use, the two measured bearings 7 are fixed on the inner side of the two support flanges 4, lubricating oil penetrates through the oil hole 9, enters the inner side of the rotating shaft 6 through the rotating oil distributor 8, and then lubricates the measured bearing 7 through the flow guide cover 5 on both sides of the rotating shaft 6. The two measured bearings 7 can be lubricated to prevent insufficient lubrication from affecting the torque measurement.

[0047] According to the requirement, the rotating driving part 11 is operated, the rotating driving part 11 drives the inner ring of the measured bearing 7 through the support shaft of the first static pressure support oil cylinder 2, axial loading is applied to the inner ring of the measured bearing 7, and the speed is measured by using the rotating speed sensor 12.

[0048] Transverse loading is applied to the rotating shaft 6 by the second static pressure support oil cylinder 3 and the anti-rotation inner shaft 31, the compression roller 143 is driven to move upward by the radial actuator 141, radial loading is applied to the rotating shaft 6, the loading point position can be adjusted in the axial direction, radial loading is applied to the measured bearing 7 according to the adjustment distance, the application and adjustment of the transverse loading and the radial loading are realized, and the friction torque of each test bearing can be measured independently by each outer ring of the measured bearing.

[0049] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing assembly friction torque measurement and testing system, comprising a bearing platform (1), characterized in that: The upper part of the bearing platform (1) is provided with a first hydrostatic support cylinder (2) and a second hydrostatic support cylinder (3). Support flanges (4) are respectively installed on the inner sides of the first hydrostatic support cylinder (2) and the second hydrostatic support cylinder (3). A guide cover (5) is installed on the inner side of each of the two support flanges (4). A rotating shaft (6) that abuts against the guide cover (5) is installed on the inner side of both support flanges (4). A bearing to be tested is fixed between the outer side of the rotating shaft (6) and the support flange (4). 7) A rotary oil distributor (8) is installed on the inner side of one end of the rotating shaft (6) adjacent to the first hydrostatic support cylinder (2). One end of the support shaft of the first hydrostatic support cylinder (2) is connected to the rotary oil distributor (8). An oil hole (9) is provided on the inner side of the support shaft of the first hydrostatic support cylinder (2). Lubricating oil passes through the oil hole, enters the inner side of the rotating shaft (6) through the rotary oil distributor (8), and then lubricates the bearing (7) under test through the guide caps (5) on both sides of the rotating shaft (6).

2. The bearing assembly friction torque measurement and testing system according to claim 1, characterized in that: A rotary drive (11) is installed on the upper part of the bearing platform (1). The output end of the rotary drive (11) is connected to the end of the support shaft of the first hydrostatic support cylinder (2). A speed sensor (12) is installed on the upper part of the bearing platform (1). The detection end of the speed sensor (12) faces the output shaft of the rotary drive (11). The rotary drive (11) drives the inner ring of the bearing under test (7) to rotate through the support shaft of the first hydrostatic support cylinder (2), and applies axial load to the inner ring of the bearing under test (7).

3. A bearing assembly friction torque measurement and testing system according to claim 1 or 2, characterized in that: One end of the support shaft of the second hydrostatic support cylinder (3) is connected to the side of the rotating shaft (6) away from the rotating oil distributor (8) through the anti-rotation inner shaft (31). The other ends of the support shafts of the first hydrostatic support cylinder (2) and the second hydrostatic support cylinder (3) are equipped with lever swing arms (21). Two adjustable columns (22) are installed on the upper part of the bearing platform (1). The upper part of the two adjustable columns (22) is equipped with a first load sensor (23). The upper part of the two first load sensors (23) is connected to one side of the two lever swing arms (21).

4. The bearing assembly friction torque measurement and testing system according to claim 3, characterized in that: The adjustable column (22) includes a threaded sleeve (221) installed on the upper part of the bearing platform (1) and a connecting rod (222) threaded on the upper part of the threaded sleeve (221), and the first load sensor (23) is installed on the upper part of the connecting rod (222).

5. A bearing assembly friction torque measurement and testing system according to claim 1 or 2, characterized in that: An arc-shaped bracket (41) is provided at the lower part of the supporting flange (4). The arc-shaped bracket (41) is installed on the upper part of the bearing platform (1). Vibration sensors (42) for detecting the displacement of the center of mass are installed on the three sides of the arc-shaped bracket (41).

6. The bearing assembly friction torque measurement and testing system according to claim 5, characterized in that: The arc-shaped bracket (41) includes an arc plate (411), a guard plate (412) installed on the side of the arc plate (411), and a support leg (413) installed on the lower part of the arc plate (411). Two of the three vibration sensors (42) are located on the upper and lower parts of the arc plate (411), respectively, and the other vibration sensor (421) is located on the upper part of the guard plate (412).

7. The bearing assembly friction torque measurement and testing system according to claim 3, characterized in that: A support frame (13) is installed on the upper part of the bearing platform (1), and a lateral actuator (131) is installed on the side of the support frame (13). A second load sensor (132) is installed at the output end of the lateral actuator (131). The second load sensor (132) is connected to the end of the support shaft of the second hydrostatic support cylinder (3), and applies lateral load to the rotating shaft (6) through the second hydrostatic support cylinder (3) and the anti-rotation inner shaft (31).

8. The bearing assembly friction torque measurement test system according to claim 7, characterized in that: The output shaft of the lateral actuator (131) is coaxially arranged with the support shaft of the second hydrostatic support cylinder (3).

9. The bearing assembly friction torque measurement and testing system according to claim 7, characterized in that: A radial actuator (141) is installed in the middle of the bearing platform (1). A fork (142) passing through the middle of the bearing platform (1) is installed at the output end of the radial actuator (141). A pressure roller (143) is rotatably installed on the inner side of the fork (142). The pressure roller (143) moves upward under the drive of the radial actuator (141) and applies radial load to the rotating shaft (6).

10. A bearing assembly friction torque measurement and testing system according to claim 9, characterized in that: The height of the highest point of the pressure roller (143) is higher than the height of the highest point of the fork (142), and the outer periphery of the highest point of the pressure roller (143) and the outer periphery of the lowest point of the rotating shaft (6) are on the same vertical plane.

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