Mounted bearing testing machine

Abstract

The invention discloses a mounted bearing testing machine, and relates to the technical field of mounted bearings, the mounted bearing testing machine comprises a base placed on the ground, the base is fixedly connected with a mounting box, an adjusting box and a driving box, the mounting box, the adjusting box and the driving box are sequentially distributed on the same straight line, a driven gear is rotatably connected in the adjusting box, and a driven gear is rotatably connected in the driving box. And the outer side of the driven gear is engaged with a driving bevel gear. According to the plummer block testing machine, a first lead screw drives two threaded sleeves to move reversely at the outer side of the first lead screw, and the threaded sleeves drive two adjusting plates to move reversely at the same time in two sliding grooves in the top of a mounting box, so that the distance between detection blocks at the tops of the two adjusting plates is adjusted; the detection blocks can be driven by the second lead screw to move reversely on the outer side of the second lead screw at the same time, then the distance between the two detection blocks at the top of the adjusting plate is adjusted, the distance between the mounting holes is adjusted, and the mounting holes can be used for mounting and fixing mounted bearings of different sizes.

Description

Technical Field

[0001] The invention relates to the technical field of seated bearings, in particular to a seated bearing testing machine. Background Art

[0002] The bearing seat testing machine is a device used to test the performance of various types of bearings. It can simulate the operating state of the bearing under different working conditions and test and evaluate the bearing's wear resistance, load capacity, speed limit and other performance.

[0003] The existing bearing seat testing machine is inconvenient to install the bearing seat and the steps are complicated.

[0004] In order to overcome the above defects, the Chinese patent of prior art 1 (publication number: CN108820722A) discloses a bearing seat detection device, including a frame, a workbench is provided on the top of the frame, a plurality of support columns are provided at the bottom of the workbench, a test frame and a detection frame are provided on the top of the workbench, a first rotating shaft is provided at the bottom center of the test frame, a bearing seat movably connected to the first rotating shaft is provided on the top of the workbench, a first gear is sleeved on the first rotating shaft, a motor is provided on the top of the workbench at one side of the bearing seat, a second gear is sleeved on the output shaft of the motor, a test plate is provided on the top of the first rotating shaft of the test frame, a plurality of placement slots are provided on the outer edge of the top of the test plate, a fixed plate is provided at the top center of the test plate, an elastic clip is provided on the outer wall of the side of the fixed plate, and the elastic clip extends to the inner side of the placement slot, and the detection frame includes a telescopic rod, a second rotating shaft movably connected is provided on the top of the telescopic rod, a cross bar is provided on the side wall of the second rotating shaft, and a detection mechanism is provided on one side of the bottom of the cross bar. The present invention has a simple structure, is convenient and quick to use, and has high detection efficiency.

[0005] There is also a Chinese patent of prior art 2 (publication number: CN107328661B) which discloses a bearing seat water pressure test bench, which uses a bearing seat water pressure test bench, and the main water pipe and the auxiliary water pipe connected to the hydraulic pump are respectively provided with multiple groups of main water pipe branches and auxiliary water pipe branches. Multiple first locking mechanisms and second locking mechanisms are provided, and the multi-loop design can perform pressure tests on multiple bearing seats at the same time, which is convenient and efficient. The special first locking mechanism and the second locking mechanism lock the bearing seat through nuts and bolts, and the bolt tower connection and nut locking can be suitable for bearing seats with different elevations.

[0006] Although the prior art can overcome the above-mentioned deficiencies, other problems still exist during its operation: the installation holes of different types of seat bearings are different, which makes it inconvenient to install them quickly, and the vibration of the equipment itself can easily affect the detection of the seat bearings. Summary of the invention

[0007] The purpose of the present invention is to provide a seat bearing testing machine to solve the problem that the installation holes of different models of seat bearings in the above-mentioned background technology are different, which makes it inconvenient to install them quickly, and the vibration of the equipment itself easily affects the detection of the seat bearings.

[0008] To achieve the above object, the present invention provides the following technical solution: a bearing seat testing machine, comprising a base placed on the ground, the base being fixedly connected with an installation box, an adjustment box and a drive box, and the installation box, the adjustment box and the drive box are sequentially distributed on the same straight line;

[0009] A driven gear is rotatably connected inside the regulating box, and a driving bevel gear is meshed on the outside of the driven gear. A motor is fixedly connected to the top of the base, and the top of the motor is fixedly connected to the top of the base through four springs. Four transmission belts equidistantly distributed in a circular shape are fixedly connected to the output end of the motor, and the ends of the transmission belts away from the motor are fixedly connected to the driving bevel gears, and the transmission belts are made of flexible material.

[0010] Preferably, slide grooves are provided on both sides of the top of the installation box, and a first screw rod is rotatably connected in the middle of the installation box, the end of the drive disk away from the adjustment box extends to the outside of the installation box, and a rotating handle is fixedly connected to the end of the first screw rod.

[0011] Preferably, an adjustment plate is slidably connected to the inner side of the top of the installation box, and sliders are fixedly connected to both ends of the bottom of the adjustment plate, and the sliders at both ends of the bottom of the adjustment plate are slidably connected to the inside of the slide groove.

[0012] Preferably, a threaded sleeve is fixedly connected to the middle of the bottom of the adjustment plate, and the threaded sleeve is threadedly connected to the outside of the first screw rod, and two symmetrically distributed slots are provided in the middle of the interior of the adjustment plate.

[0013] Preferably, a positioning slide rod is fixedly connected to one side of the adjustment plate, and a second screw rod is rotatably connected to one side of the adjustment plate. The positioning slide rod and the second screw rod are symmetrically distributed, and the thread directions of the two ends of the second screw rod are opposite.

[0014] Preferably, the top of the adjustment plate is slidably connected to two symmetrically distributed detection blocks, and the inside of the detection block is symmetrically distributed with sliding holes and threaded holes. The detection block is slidably connected to the outside of the positioning slide rod, and the detection block is threadedly connected to the outside of the second screw rod through the threaded hole. A mounting hole is provided in the middle of the detection block, and the tops of the two detection blocks are fixedly connected to a bearing body with a seat through the mounting hole and bolts.

[0015] Preferably, a mounting hole is provided in the middle of the detection block, and the tops of the two detection blocks are fixedly connected with a bearing body with a seat through the mounting hole and bolts, adjustment grooves are provided in the middle of both sides of the drive box, and two fixed plates distributed up and down are fixedly connected on both sides of the driven gear, and positioning rods are fixedly connected to both sides of the drive box through fixed plates and are rotatably connected with a third screw rod.

[0016] Preferably, an adjustment ring is slidably connected to the outside of the drive box, and one end of the adjustment ring is threadedly connected to the outside of the third screw rod, and the end of the adjustment ring away from the third screw rod is slidably connected to the outside of the positioning rod, and mounting sleeves are fixedly connected on both sides of the middle of the adjustment ring, and the mounting sleeves are aligned with the adjustment grooves.

[0017] Preferably, the driving disk is configured as a three-pronged structure, and the ends of the driving disk are rotatably connected to connecting rods, and the end of each connecting rod is rotatably connected to the transmission disk at one end away from the driving disk. The transmission disk is a three-pronged structure, and both sides of the ends of the transmission disk are rotatably connected to the connecting rods, and the side of the transmission disk away from the driving disk is rotatably connected to the driven disk through the connecting rod, and the driven disk is configured as a three-pronged structure.

[0018] Preferably, the connecting rod, transmission plate and driven plate are all located inside the drive box, and the pneumatic shaft and the transmission shaft are rotatably connected to the inside of the mounting sleeve, an pneumatic shaft is fixedly connected to the middle of a side of the driven plate away from the transmission plate, and a control valve is fixedly connected to one end of the pneumatic shaft away from the driven plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the seat bearing testing machine, the first screw rod will drive the two threaded sleeves to move in opposite directions at the same time on their outer sides, and the threaded sleeves will drive the two adjustment plates to move in opposite directions at the same time inside the two slide grooves at the top of the installation box, thereby adjusting the distance between the detection blocks on the top of the two adjustment plates, and the second screw rod will drive the detection blocks to move in opposite directions at the same time on their outer sides, thereby adjusting the distance between the two detection blocks on the top of the adjustment plates, thereby adjusting the spacing of each mounting hole, so that the mounting holes can install and fix seat bearings of different sizes;

[0021] When the motor output end is rotating, the transmission belt will be driven to be entangled with each other, and the transmission belt will drive the driving bevel gear to rotate only after the winding is completed. Since the transmission belt is set to a flexible material, the vibration generated by the rotation of the motor output end will not be transmitted to the driving bevel gear, and the driving force of the driving bevel gear itself will not be affected, which reduces the impact of the motor vibration on the overall device and improves the accuracy of the seat bearing test;

[0022] The installation sleeve will drive the height of the air shaft to change, so that the height of the driven plate at the end of the air shaft changes. Since the driving plate, the transmission plate and the driven plate form a Schmidt coupling structure, the change in the height of the driven plate will not affect the power transmission of the transmission shaft to the air shaft, and the structure can vibrate in parallel with its direction, thereby reducing the impact of the vibration on the overall device, further improving the accuracy of the seated bearing test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the rear structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the installation box structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the explosion structure of the installation box of the present invention;

[0027] Figure 5 This is a schematic diagram of the explosion structure of the adjustment plate of the present invention;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the base of the present invention;

[0029] Figure 7 It is a schematic diagram of the transmission belt structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the drive box of the present invention;

[0031] Fig. 9 It is a schematic diagram of the structure of the transmission disc of the present invention;

[0032] Fig.10 It is a schematic diagram of the structure of the inflatable shaft of the present invention.

[0033] In the figure: 1. base; 2. installation box; 3. adjustment box; 4. drive box; 5. slide; 6. first screw; 7. adjustment plate; 8. threaded sleeve; 9. positioning slide; 10. second screw; 11. detection block; 12. installation hole; 13. bearing body with seat; 14. driven gear; 15. transmission shaft; 16. driving disk; 17. driving bevel gear; 18. motor; 19. transmission belt; 20. adjustment groove; 21. fixing plate; 22. adjustment ring; 23. installation sleeve; 24. third screw; 25. connecting rod; 26. driving disk; 27. driven disk; 28. inflatable shaft; 29. ​​control valve. DETAILED DESCRIPTION

[0034] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] See also Figure 1 - Fig.10 , the present invention provides the following technical solutions:

[0037] A bearing seat testing machine comprises a base 1 placed on the ground, the base 1 is fixedly connected with a mounting box 2, an adjustment box 3 and a drive box 4, and the mounting box 2, the adjustment box 3 and the drive box 4 are sequentially distributed on the same straight line;

[0038] A driven gear 14 is rotatably connected inside the regulating box 3, and a driving bevel gear 17 is meshed on the outer side of the driven gear 14. A motor 18 is fixedly connected to the top of the base 1, and the top of the motor 18 is fixedly connected to the top of the base 1 through four springs. Four transmission belts 19 equidistantly distributed in a circular shape are fixedly connected to the output end of the motor 18, and the ends of the transmission belts 19 away from the motor 18 are fixedly connected to the driving bevel gears 17, and the transmission belts 19 are made of flexible material.

[0039] Slide grooves 5 are provided on both sides of the top of the installation box 2, and a first screw rod 6 is rotatably connected to the middle of the installation box 2. The end of the drive disk 16 away from the adjustment box 3 extends to the outside of the installation box 2, and a rotating handle is fixedly connected to the end of the first screw rod 6.

[0040] An adjusting plate 7 is slidably connected to the inner side of the top of the installation box 2 , and sliders are fixedly connected to both ends of the bottom of the adjusting plate 7 , and the sliders at both ends of the bottom of the adjusting plate 7 are slidably connected to the inside of the slide groove 5 .

[0041] A threaded sleeve 8 is fixedly connected to the middle of the bottom of the adjustment plate 7 , and the threaded sleeve 8 is threadedly connected to the outer side of the first screw rod 6 , and two symmetrically distributed slots are provided in the middle of the interior of the adjustment plate 7 .

[0042] A positioning slide rod 9 is fixedly connected to one side of the adjusting plate 7, and a second screw rod 10 is rotatably connected to one side of the adjusting plate 7. The positioning slide rod 9 and the second screw rod 10 are symmetrically distributed, and the threads at both ends of the second screw rod 10 are in opposite directions.

[0043] Two symmetrically distributed detection blocks 11 are slidably connected to the top of the adjustment plate 7, and the detection blocks 11 have symmetrically distributed sliding holes and threaded holes inside. The detection blocks 11 are slidably connected to the outside of the positioning slide rod 9, and the detection blocks 11 are threadedly connected to the outside of the second screw rod 10 through the threaded holes. A mounting hole 12 is provided in the middle of the detection block 11, and a seated bearing body 13 is fixedly connected to the top of the two detection blocks 11 through the mounting hole 12 and bolts.

[0044] A mounting hole 12 is provided in the middle of the detection block 11, and a seat bearing body 13 is fixedly connected to the top of the two detection blocks 11 through the mounting hole 12 and bolts, an adjustment groove 20 is provided in the middle of both sides of the drive box 4, and two upper and lower distributed fixing plates 21 are fixedly connected on both sides of the driven gear 14, and a positioning rod is fixedly connected to both sides of the drive box 4 through the fixing plate 21 and is rotatably connected to a third screw rod 24.

[0045] An adjusting ring 22 is slidably connected to the outside of the driving box 4, and one end of the adjusting ring 22 is threadedly connected to the outside of the third screw rod 24, and the end of the adjusting ring 22 away from the third screw rod 24 is slidably connected to the outside of the positioning rod, and mounting sleeves 23 are fixedly connected to both sides of the middle of the adjusting ring 22, and the mounting sleeves 23 are aligned with the adjusting groove 20.

[0046] The driving disk 16 is configured as a three-pronged structure, and the ends of the driving disk 16 are rotatably connected to connecting rods 25, and the end of each connecting rod 25 away from the driving disk 16 is rotatably connected to a transmission disk 26, the transmission disk 26 is a three-pronged structure, and both sides of the ends of the transmission disk 26 are rotatably connected to the connecting rods 25, and the side of the transmission disk 26 away from the driving disk 16 is rotatably connected to a driven disk 27 through the connecting rod 25, and the driven disk 27 is configured as a three-pronged structure.

[0047] The connecting rod 25, the transmission plate 26 and the driven plate 27 are all located inside the drive box 4, and the pneumatic shaft 28 and the transmission shaft 15 are both rotatably connected to the inside of the mounting sleeve 23, the pneumatic shaft 28 is fixedly connected to the middle of the side of the driven plate 27 away from the transmission plate 26, and the control valve 29 is fixedly connected to the end of the pneumatic shaft 28 away from the driven plate 27.

[0048] Embodiment 2:

[0049] Based on the first embodiment, the specific working principle is as follows:

[0050] This bearing seat testing machine first controls the control valve 29 to be in an open state, discharges the air inside the inflatable shaft 28, and then moves the sliding bar outside the inflatable shaft 28 to the inside of the inflatable shaft 28. At this time, the bearing seat is installed on the outside of the inflatable shaft 28, so that the mounting hole at the bottom of the bearing seat is aligned with the mounting hole 12 inside the detection block 11, and the bolt mounting hole 12 and the mounting hole at the bottom of the bearing seat are connected to each other, so that the bearing seat is fixed. When the bearing seat is installed on the outside of the inflatable shaft 28, the third screw rod 24 is rotated to drive the adjusting ring 22 to slide on the outside of the drive box 4, so as to adjust the height of the two mounting sleeves 23. The inflatable shaft 28 is adjusted by adjusting the height of the mounting sleeve 23 until the bearing seat on the outside of the inflatable shaft 28 fits with the top of the detection block 11. When the bearing seat is installed After the installation is completed, high-pressure gas is injected into the inflatable shaft 28 through the control valve 29, so that the high-pressure gas drives the sliding bar on the outside of the inflatable shaft 28 to slide outward until the sliding bar engages with the inner side of the bearing with a seat, thereby fixing the bearing with a seat. At this time, the starting motor 18 drives the transmission belt 19 and the driving bevel gear 17 to rotate, so that the driving bevel gear 17 drives the driven gear 14 and the driving disk 16 to rotate, and then drives the inflatable shaft 28 to rotate the bearing inside the bearing with a seat through the driving disk 16. The bearing with a seat will vibrate when rotating, and the vibration data generated will be collected by the mounting hole 12. When the internal occlusal gap of the bearing with a seat is large or the internal bearing is misaligned, the bearing with a seat will produce irregular and large vibrations. The vibration of the bearing with a seat is detected through the mounting hole 12 to judge the internal gap or installation condition of the bearing with a seat.

[0051] Since the threads at both ends of the first screw rod 6 are in opposite directions, when the first screw rod 6 is rotated, the first screw rod 6 will drive the two threaded sleeves 8 to move in opposite directions at the same time on their outer sides, and the threaded sleeves 8 will drive the two adjustment plates 7 to move in opposite directions at the same time inside the two slide grooves 5 at the top of the installation box 2, thereby adjusting the distance between the detection blocks 11 at the top of the two adjustment plates 7, and the detection blocks 11 are driven to slide on the outside of the positioning slide rod 9 and the inside of the adjustment plate 7 by rotating the second screw rod 10. Since the threads at both ends of the threaded sleeve 8 are in opposite directions, the second screw rod 10 will drive the detection blocks 11 to move in opposite directions at the same time on their outer sides, thereby adjusting the distance between the two detection blocks 11 at the top of the adjustment plate 7, so that each detection block 11 can move arbitrarily within the space of one-fourth of the top of the installation box 2, so that the mounting holes 12 inside the detection blocks 11 can move arbitrarily within the space of one-fourth of the top of the installation box 2, thereby adjusting the spacing of each mounting hole 12, so that the mounting holes 12 can install and fix bearings with seats of different sizes;

[0052] The bottom of the motor 18 is connected to the top of the base 1 through a spring, and the output end of the motor 18 is connected to the driving bevel gear 17 through four transmission belts 19. When the motor 18 is in operation, the motor 18 itself will vibrate, and the spring deformation at the bottom of the motor 18 absorbs the vibration generated by the motor 18 itself, thereby reducing the impact of the vibration of the motor 18 on the overall device. During the rotation of the output end of the motor 18, the transmission belts 19 will be driven to entangle with each other, and the transmission belts 19 will drive the driving bevel gear 17 to rotate only after the winding is completed. Since the transmission belts 19 are made of flexible material, the vibration generated by the rotation of the output end of the motor 18 will not be transmitted to the driving bevel gear 17, and the driving force of the driving bevel gear 17 itself will not be affected, thereby reducing the impact of the vibration of the motor 18 on the overall device and improving the accuracy of the seat bearing test.

[0053] When the driven gear 14 outputs power, it will drive the transmission shaft 15 to rotate, and the transmission shaft 15 will drive the driving plate 16 to rotate. At the same time, when the driving plate 16 rotates, it will drive the transmission plate 26 to rotate through the connecting rod 25 connected to each other at its ends, and the transmission plate 26 drives the driven plate 27 to rotate through the connecting rod 25 connected to each other at its ends, so that the driving plate 16, the transmission plate 26 and the driven plate 27 form a Schmidt coupling structure. When the rotating fixed plate 21 adjusts the height of the mounting sleeve 23, the mounting sleeve 23 will drive the height of the pneumatic shaft 28 to change, so that the height of the driven plate 27 at the end of the pneumatic shaft 28 changes. Since the driving plate 16, the transmission plate 26 and the driven plate 27 form a Schmidt coupling structure, the change in the height of the driven plate 27 will not affect the power transmission of the transmission shaft 15 to the pneumatic shaft 28, and the structure can vibrate in parallel with its direction, thereby reducing the impact of the vibration on the overall device, and further improving the accuracy of the seat bearing test.

[0054] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing seat testing machine, comprising a base (1) placed on the ground, wherein the base (1) is fixedly connected with a mounting box (2), an adjustment box (3) and a drive box (4), and the mounting box (2), the adjustment box (3) and the drive box (4) are sequentially distributed on the same straight line; Features: The regulating box (3) is internally rotatably connected to a driven gear (14), and the outer side of the driven gear (14) is meshed with a driving bevel gear (17); the top of the base (1) is fixedly connected to a motor (18), and the top of the motor (18) is fixedly connected to the top of the base (1) via four springs; the output end of the motor (18) is fixedly connected to four transmission belts (19) that are equidistantly distributed in an annular shape, and the ends of the transmission belts (19) that are away from the motor (18) are fixedly connected to the driving bevel gear (17), and the transmission belts (19) are made of a flexible material.

2. A seated bearing testing machine according to claim 1, characterized in that: Both sides of the top of the installation box (2) are provided with slide grooves (5), and a first screw rod (6) is rotatably connected in the middle of the installation box (2), and the end of the drive disk (16) away from the adjustment box (3) extends to the outside of the installation box (2), and a rotating handle is fixedly connected to the end of the first screw rod (6).

3. A bearing seat testing machine according to claim 2, characterized in that: An adjustment plate (7) is slidably connected to the inner side of the top of the installation box (2), and sliders are fixedly connected to both ends of the bottom of the adjustment plate (7), and the sliders at both ends of the bottom of the adjustment plate (7) are slidably connected to the inside of the slide groove (5).

4. A seated bearing testing machine according to claim 3, characterized in that: A threaded sleeve (8) is fixedly connected in the middle of the bottom of the adjustment plate (7), and the threaded sleeve (8) is threadedly connected to the outside of the first screw rod (6), and two symmetrically distributed slots are provided in the middle of the adjustment plate (7).

5. A seated bearing testing machine according to claim 4, characterized in that: A positioning slide rod (9) is fixedly connected to one side of the adjusting plate (7), and a second screw rod (10) is rotatably connected to one side of the adjusting plate (7); the positioning slide rod (9) and the second screw rod (10) are symmetrically distributed, and the threads at both ends of the second screw rod (10) are in opposite directions.

6. A seated bearing testing machine according to claim 5, characterized in that: The top of the adjustment plate (7) is slidably connected to two symmetrically distributed detection blocks (11), and the detection blocks (11) have symmetrically distributed sliding holes and threaded holes inside. The detection blocks (11) are slidably connected to the outside of the positioning slide rod (9), and the detection blocks (11) are threadedly connected to the outside of the second screw rod (10) through the threaded holes. A mounting hole (12) is provided in the middle of the detection block (11), and the tops of the two detection blocks (11) are fixedly connected to a seated bearing body (13) through the mounting hole (12) and bolts.

7. A seated bearing testing machine according to claim 6, characterized in that: A mounting hole (12) is provided in the middle of the detection block (11), and the tops of the two detection blocks (11) are fixedly connected to a seated bearing body (13) through the mounting hole (12) and bolts, and adjustment grooves (20) are provided in the middle of both sides of the drive box (4), and two upper and lower fixed plates (21) are fixedly connected to both sides of the driven gear (14), and positioning rods are fixedly connected to both sides of the drive box (4) through the fixed plates (21) and are rotatably connected to the third screw rod (24).

8. The seated bearing testing machine according to claim 1, characterized in that: An adjusting ring (22) is slidably connected to the outside of the driving box (4), and one end of the adjusting ring (22) is threadedly connected to the outside of the third screw rod (24), and one end of the adjusting ring (22) away from the third screw rod (24) is slidably connected to the outside of the positioning rod, and both sides of the middle of the adjusting ring (22) are fixedly connected to mounting sleeves (23), and the mounting sleeves (23) and the adjusting groove (20) are aligned with each other.

9. A seated bearing testing machine according to claim 8, characterized in that: The driving disk (16) is configured as a three-pronged structure, and both ends of the driving disk (16) are rotatably connected to connecting rods (25), and one end of each connecting rod (25) away from the driving disk (16) is rotatably connected to a transmission disk (26), and the transmission disk (26) has a three-pronged structure, and both sides of the ends of the transmission disk (26) are rotatably connected to the connecting rods (25), and one side of the transmission disk (26) away from the driving disk (16) is rotatably connected to a driven disk (27) through the connecting rod (25), and the driven disk (27) is configured as a three-pronged structure.

10. A seated bearing testing machine according to claim 9, characterized in that: The connecting rod (25), the transmission plate (26) and the driven plate (27) are all located inside the drive box (4), and the pneumatic shaft (28) and the transmission shaft (15) are both rotatably connected inside the mounting sleeve (23), the pneumatic shaft (28) is fixedly connected to the middle of a side of the driven plate (27) away from the transmission plate (26), and the control valve (29) is fixedly connected to one end of the pneumatic shaft (28) away from the driven plate (27).

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