Self-adaptive hydraulic expansion clamp for thin-wall bearing ring

Abstract

The invention belongs to the technical field of bearing ring production, and discloses a self-adaptive hydraulic expansion clamp for a thin-wall bearing ring. Comprising a base and further comprises a plurality of expansion plates, the expansion plates are arranged on the base in a sliding mode, and a hydraulic module used for driving the expansion plates to move at the same time is arranged on the base. By arranging the pressure monitoring module and the pressure adjusting module, when the multiple expansion plates move towards the inner wall of the bearing ring at the same time, a pressing block firstly makes contact with the inner wall of the bearing ring, the pressing block is pressed into a notch, the pressing block presses a pressure sensor through an elastic piece, the pressure sensor generates a reading, and if the pressure of one expansion plate is different from that of other expansion plates, the pressure of the other expansion plates is adjusted. A first electric push rod and a first motor behind a corresponding expansion plate are started, the first motor drives a closing plate to close a transverse pipe, the first electric push rod drives a second piston block to move, the second piston block moves to adjust the pressure of the expansion plate, and the purpose of monitoring and adjusting the pressure of the expansion plate in real time is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing ring production, and more specifically, to an adaptive hydraulic expansion fixture for thin-walled bearing rings. Background Art

[0002] A thin-walled bearing refers to a bearing part with a large ratio of wall thickness to diameter. A bearing is composed of multiple bearing balls and bearing rings. During the processing of the bearing rings, special fixtures are required for clamping, and generally, expansion fixtures are used.

[0003] Existing expansion fixtures usually include multiple expansion plates. The bearing ring is arranged outside the multiple expansion plates. By simultaneously moving the multiple expansion plates away from the center, the multiple expansion plates come into contact with the inner wall of the bearing ring at the same time, and the bearing ring is expanded and fixed at that position for subsequent processing operations. However, the current expansion fixtures are difficult to monitor the pressure of the expansion plates in real time and difficult to adjust the pressure in real time. If the pressure applied by one expansion plate to the bearing ring is different from that of other expansion plates, the bearing ring will deviate from the center position, resulting in processing errors. Summary of the Invention

[0004] In order to solve the problems in the background art that the current expansion fixtures are difficult to monitor the pressure of the expansion plates in real time and difficult to adjust the pressure in real time, the present invention provides an adaptive hydraulic expansion fixture for thin-walled bearing rings.

[0005] To achieve the above object, the present invention provides the following technical solutions: An adaptive hydraulic expansion fixture for thin-walled bearing rings, including a base, and further including:

[0006] Multiple expansion plates, which are all slidably arranged on the base. A hydraulic module for driving the multiple expansion plates to move simultaneously is arranged on the base. A pressure monitoring module for real-time monitoring of the expansion pressure is arranged on the expansion plates. A pressure adjustment module for real-time adjustment of the pressure magnitude is arranged on the hydraulic module;

[0007] A sealing ring, which is arranged on the hydraulic module and used for sealing the hydraulic module. A sealing monitoring module for monitoring the sealing performance of the sealing ring is arranged on the base.

[0008] Further, the hydraulic module includes a cylinder fixedly connected to the middle of the base. The bottom of the cylinder is connected and fixedly provided with a vertical pipe. One end of the vertical pipe is provided with an external oil pump. The cylinder is connected and fixedly provided with a plurality of horizontal pipes. A first piston block is slidably arranged in the horizontal pipes. A horizontal column is fixedly connected to the first piston block. The horizontal column slidably penetrates one end of the horizontal pipe. One end of the horizontal column is fixedly connected to the side wall of the corresponding expansion plate. Hydraulic oil is arranged in the cylinder and the horizontal pipes. The sealing ring is arranged at the connection between the cylinder and the vertical pipe.

[0009] Further, the pressure monitoring module includes notches formed in a plurality of expansion plates. A pressure sensor is installed in the notch. One end of the pressure sensor is fixedly connected to an elastic member. A pressing block is fixedly connected to the side wall of the elastic member. The pressing block is slidably connected in the notch and extends out of the notch.

[0010] Further, the pressure adjustment module includes a cylinder body fixedly connected to and communicating with the horizontal pipe. A first electric push rod is fixedly connected to the bottom of the cylinder body. The output end of the first electric push rod is fixedly connected to a second piston block slidably connected in the cylinder body. A first motor is fixedly connected to the side wall of the cylinder. The output shaft of the first motor is fixedly connected to a rotating shaft. The rotating shaft is rotatably connected to the horizontal pipe. A closing plate is fixedly connected to the outer wall of the rotating shaft. The closing plate is in a state perpendicular to the first piston block. The distance between the closing plate and the cylinder is less than the distance between the second piston block and the cylinder.

[0011] Further, the seal monitoring module includes a second motor. A circular groove is formed in the base. The second motor is installed in the circular groove through a mounting plate. The output shaft of the second motor is fixedly connected to a circular gear. A ring gear is engaged with one side of the circular gear. The inner wall of the ring gear is fixedly connected to a ring plate rotatably connected in the circular groove. A camera is installed on the ring plate. An ultraviolet lamp is installed on the camera. The camera and the ultraviolet lamp are directly below the sealing ring. The hydraulic oil contains a fluorescent agent component.

[0012] Further, a temporary sealing module for temporarily sealing the leakage point is arranged on the sealing ring. The temporary sealing module includes an annular shell fixedly connected to the bottom of the sealing ring. A plurality of elastic arc-shaped sacs are arranged in the annular shell. A plurality of liquid outlet pipes and liquid inlet pipes are installed on the arc-shaped sacs. The liquid outlet pipes are directly opposite to the connection part between the sealing ring and the vertical pipe. A plurality of elastic closing sheets are fixedly connected in the liquid outlet pipes. An electromagnetic valve is installed on the liquid inlet pipe. A second electric push rod is installed on the camera. The output end of the second electric push rod is fixedly connected to a push plate. The bottom end of the push plate is directly opposite to one of the liquid inlet pipes.

[0013] Further, a seal alarm module is arranged on the camera. The seal alarm module includes a signal lamp installed at the bottom of the camera. A buzzer is installed on the signal lamp.

[0014] Further, the information collected by the pressure monitoring module and the seal monitoring module is transmitted to the main controller. The main controller can control the opening and closing of the hydraulic module, the pressure adjustment module, the temporary sealing module, and the seal alarm module.

[0015] The technical effects and advantages of the self-adaptive hydraulic expansion fixture for thin-walled bearing rings of the present invention:

[0016] (1) By setting up a pressure monitoring module and a pressure adjustment module, when the hydraulic module drives multiple tightening plates to tighten the bearing ring, the multiple tightening plates move towards the inner wall of the bearing ring simultaneously. The pressure block first contacts the inner wall of the bearing ring. When the tightening plate contacts the inner wall of the bearing ring, the pressure block is pressed into the notch. The pressure block presses the pressure sensor through the elastic member, and the pressure sensor generates a reading. If the pressure of a certain tightening plate is different from others, start the first electric push rod and the first motor behind the corresponding tightening plate. The first motor drives the closing plate to close the horizontal pipe, and the first electric push rod drives the second piston block to move. The second piston block moving upward can increase the pressure of the tightening plate, and the second piston block moving downward can decrease the pressure of the tightening plate, achieving the purpose of real-time monitoring and adjustment of the tightening plate pressure.

[0017] (2) By setting up a seal monitoring module, when there is a leak at a certain place of the sealing ring, the hydraulic oil will flow downward along the vertical pipe and adhere to the outer wall of the vertical pipe. The camera will conduct regular inspections for leaks. Start the second motor to drive the circular gear to rotate. The circular gear drives the camera and the ultraviolet lamp to rotate through the annular gear and the ring plate. The ultraviolet lamp irradiates the outer wall of the vertical pipe, and the camera takes pictures of the outer wall of the vertical pipe. When the ultraviolet lamp irradiates the leak, since the hydraulic oil contains fluorescent agent components, the leak will emit fluorescence, achieving the purpose of automatically monitoring whether the hydraulic oil leaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the present invention;

[0019] Figure 2 is the sectional view schematic diagram of the base in the present invention;

[0020] Figure 3 is the sectional view schematic diagram of the vertical pipe in the present invention;

[0021] Figure 4 is in the present invention Figure 2 the enlarged schematic diagram at position A;

[0022] Figure 5 is in the present invention Figure 2 the enlarged schematic diagram at position B;

[0023] Figure 6 is in the present invention Figure 2 the enlarged schematic diagram at position C;

[0024] Figure 7 is in the present invention Figure 3 the enlarged schematic diagram at position D;

[0025] Figure 8 is in the present invention Figure 7 the enlarged schematic diagram at position E;

[0026] Figure 9Schematic diagram of the system module structure in the present invention.

[0027] In the figure:

[0028] 1. Base; 2. Tightening plate; 3. Sealing ring; 4. Cylinder; 5. Vertical pipe; 6. Horizontal pipe; 7. First piston block; 8. Cross column; 9. Notch; 10. Pressure sensor; 11. Elastic member; 12. Pressing block; 13. Cylinder body; 14. First electric push rod; 15. Second piston block; 16. First motor; 17. Rotating shaft; 18. Closing plate; 19. Second motor; 20. Circular gear; 21. Ring plate; 22. Annular gear; 23. Camera; 24. Ultraviolet lamp; 25. Annular housing; 26. Arc-shaped bladder; 27. Liquid outlet pipe; 28. Sealing piece; 29. Liquid inlet pipe; 30. Solenoid valve; 31. Second electric push rod; 32. Push plate; 33. Signal lamp; 34. Buzzer. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] Referring to Figures 1-9 , a self-adaptive hydraulic tightening fixture for thin-walled bearing rings, including a base 1, further including:

[0031] Multiple tightening plates 2, and multiple tightening plates 2 are all slidably arranged on the base 1. A hydraulic module for driving multiple tightening plates 2 to move simultaneously is arranged on the base 1. A pressure monitoring module for real-time monitoring of the tightening pressure is arranged on the tightening plate 2. A pressure adjustment module for real-time adjustment of the pressure magnitude is arranged on the hydraulic module;

[0032] A sealing ring 3, the sealing ring 3 is arranged on the hydraulic module and is used for sealing the hydraulic module. A sealing monitoring module for monitoring the sealing performance of the sealing ring 3 is arranged on the base 1;

[0033] During use, the bearing ring to be processed is arranged on the base 1, the hydraulic module is started to drive multiple tightening plates 2 to move outward simultaneously, so that multiple tightening plates 2 tighten and fix the bearing ring. The tightening pressure of the tightening plate 2 is monitored in real time through the pressure monitoring module, and the tightening pressure is adjusted in real time according to the real-time tightening pressure situation through the pressure adjustment module. The sealing ring 3 can prevent the hydraulic oil of the hydraulic module from leaking, and the sealing performance of the sealing ring 3 is monitored by setting the sealing monitoring module.

[0034] Referring to Figure 1 ,Figure 2 and Figure 4 , the hydraulic module includes a cylinder 4 fixedly connected to the middle of the base 1. A vertical pipe 5 is fixedly connected to the bottom of the cylinder 4 in communication. An external oil pump is provided at one end of the vertical pipe 5. A plurality of horizontal pipes 6 are fixedly connected to the cylinder 4 in communication. A first piston block 7 is slidably arranged in the horizontal pipe 6. A cross column 8 is fixedly connected to the first piston block 7. The cross column 8 slidably penetrates one end of the horizontal pipe 6. One end of the cross column 8 is fixedly connected to the side wall of the corresponding expansion plate 2. Hydraulic oil is provided in the cylinder 4 and the horizontal pipes 6. A sealing ring 3 is arranged at the connection between the cylinder 4 and the vertical pipe 5. When it is necessary to drive a plurality of expansion plates 2 to fix the bearing ring, start the external oil pump to inject hydraulic oil into the cylinder 4 through the vertical pipe 5. The hydraulic oil in the cylinder 4 enters the horizontal pipes 6. The hydraulic oil will push the first piston block 7 to move. The first piston block 7 drives the expansion plate 2 to move through the cross column 8, so that a plurality of expansion plates 2 move outward simultaneously, achieving the purpose of expanding and fixing the bearing ring. When it is necessary to release the fixation of the bearing ring, part of the hydraulic oil is pumped out of the cylinder 4 through the external oil pump, and the expansion plate 2 can be separated from the bearing ring.

[0035] Referring to Figure 5 , the pressure monitoring module includes notches 9 opened on a plurality of expansion plates 2. A pressure sensor 10 is installed in the notch 9. One end of the pressure sensor 10 is fixedly connected to an elastic member 11. A pressure block 12 is fixedly connected to the side wall of the elastic member 11. The pressure block 12 is slidably connected in the notch 9. The pressure block 12 extends out of the notch 9. During the movement of the expansion plate 2 towards the inner wall of the bearing ring, the pressure block 12 first contacts the inner wall of the bearing ring, and the pressure block 12 is gradually pressed into the notch 9. The pressure block 12 presses the pressure sensor 10 through the elastic member 11, and the pressure sensor 10 generates a reading. When the pressure block 12 is completely pressed into the notch 9, it indicates that the pressure applied by the expansion plate 2 is within a stable range. If the pressure of a certain expansion plate 2 is too small, the pressure block 12 is not completely pressed into the notch 9, and the pressure needs to be adjusted through the pressure adjustment module.

[0036] Referring to Figure 4, the pressure adjustment module includes a cylinder body 13 connected and fixed to the horizontal pipe 6. A first electric push rod 14 is fixed to the bottom of the cylinder body 13. The output end of the first electric push rod 14 is fixed with a second piston block 15 slidably connected inside the cylinder body 13. A first motor 16 is fixed to the side wall of the cylinder 4. The output shaft of the first motor 16 is fixed with a rotating shaft 17. The rotating shaft 17 is rotatably connected to the horizontal pipe 6. A closing plate 18 is fixed to the outer wall of the rotating shaft 17. The closing plate 18 is in a state perpendicular to the first piston block 7. The distance between the closing plate 18 and the cylinder 4 is less than the distance between the second piston block 15 and the cylinder 4. When it is necessary to adjust the pressure of a certain tightening plate 2, start the first motor 16. The first motor 16 drives the rotating shaft 17 to rotate. The first rotating shaft 17 drives the closing plate 18 to rotate. The closing plate 18 closes the corresponding horizontal pipe 6 of the tightening plate 2. Start the first electric push rod 14. The first electric push rod 14 drives the second piston block 15 to move inside the cylinder body 13. When the second piston block 15 moves upward, the pressure of the tightening plate 2 on the inner wall of the bearing race can be increased. When the second piston block 15 moves downward, the pressure of the tightening plate 2 on the bearing race can be reduced.

[0037] Refer to Figure 3 and Figure 6 , the seal monitoring module includes a second motor 19. A circular groove is opened in the base 1. The second motor 19 is installed in the circular groove through a mounting plate. The output shaft of the second motor 19 is fixed with a circular gear 20. A ring gear 22 is engaged on one side of the circular gear 20. The inner wall of the ring gear 22 is fixed with an annular plate 21 rotatably connected in the circular groove. A camera 23 is installed on the annular plate 21. An ultraviolet lamp 24 is installed on the camera 23. The camera 23 and the ultraviolet lamp 24 are directly opposite to the lower part of the sealing ring 3. The hydraulic oil contains a fluorescent agent component. When there is a leak at a certain position of the sealing ring 3, the hydraulic oil will flow down along the outer wall of the vertical pipe 5 and remain on the outer wall of the vertical pipe 5. The camera 23 needs to be regularly checked for tightness. Turn on the ultraviolet lamp 24 and start the second motor 19. The second motor 19 drives the circular gear 20 to rotate. The circular gear 20 drives the annular plate 21 to rotate through the ring gear 22. The annular plate 21 drives the camera 23 and the ultraviolet lamp 24 to rotate. The camera 23 takes pictures of the outer wall of the vertical pipe 5. Since the hydraulic oil contains a fluorescent agent component, after the ultraviolet lamp 24 irradiates the position where the hydraulic oil remains, that position will emit fluorescence. The camera 23 can take pictures of the fluorescent part to realize the tightness monitoring of the sealing ring 3.

[0038] Refer to Figure 7 and Figure 8, a temporary sealing module for temporarily sealing the leakage point is provided on the sealing ring 3. The temporary sealing module includes an annular housing 25 fixedly connected to the bottom of the sealing ring 3. A plurality of elastic arc-shaped bladders 26 are arranged inside the annular housing 25. A plurality of liquid outlet pipes 27 and liquid inlet pipes 29 are installed on the arc-shaped bladders 26. The liquid outlet pipes 27 are directed at the connection between the sealing ring 3 and the vertical pipe 5. A plurality of elastic sealing sheets 28 are fixedly connected inside the liquid outlet pipes 27. An electromagnetic valve 30 is installed on the liquid inlet pipe 29. A second electric push rod 31 is installed on the camera 23. The output end of the second electric push rod 31 is fixedly connected to a push plate 32. The bottom end of the push plate 32 is directed at one of the liquid inlet pipes 29. After the leakage point is found and before the staff handles it, in order to prevent excessive leakage of hydraulic oil and need to carry out temporary repair and sealing, the second electric push rod 31 is started. The second electric push rod 31 drives the push plate 32 to move. The push plate 32 pushes the corresponding liquid inlet pipe 29. The liquid inlet pipe 29 squeezes the corresponding arc-shaped bladder 26. After the arc-shaped bladder 26 is squeezed, the repair agent inside the arc-shaped bladder 26 breaks through the sealing sheet 28 and sprays out from the liquid outlet pipe 27, sprays to the leakage point, and the repair agent will quickly solidify to temporarily seal the leakage point.

[0039] Refer to Figure 3 and Figure 6 , a sealing alarm module is provided on the camera 23. The sealing alarm module includes a signal lamp 33 installed at the bottom of the camera 23. A buzzer 34 is installed on the signal lamp 33. After the camera 23 finds the leakage point, the camera 23 stays at this place, and the signal lamp 33 and the buzzer 34 are started to remind the staff that the sealing ring 3 has a leakage, and the leakage position is directed at the signal lamp 33.

[0040] Refer to Figure 9 , the information collected by the pressure monitoring module and the sealing monitoring module are both transmitted to the main controller. The main controller can control the opening and closing of the hydraulic module, the pressure adjustment module, the temporary sealing module and the sealing alarm module. The data and images monitored by the pressure sensor 10 and the camera 23 are both transmitted to the main controller. The main controller judges and starts the corresponding module to deal with it.

[0041] Working principle: When in use, the bearing ring to be processed is set on the base 1. The hydraulic module is started to drive a plurality of expansion plates 2 to move outward at the same time, so that the plurality of expansion plates 2 expand and fix the bearing ring. The expansion pressure of the expansion plates 2 is monitored in real time through the pressure monitoring module. The expansion pressure is adjusted in real time according to the real-time expansion pressure situation through the pressure adjustment module. The sealing ring 3 can prevent the hydraulic oil of the hydraulic module from leaking. The sealing performance of the sealing ring 3 is monitored by setting the sealing monitoring module;

[0042] When it is necessary to drive multiple tightening plates 2 to fix the bearing rings, start the external oil pump to inject hydraulic oil into the cylinder 4 through the vertical pipe 5. The hydraulic oil in the cylinder 4 enters the horizontal pipe 6, and the hydraulic oil will push the first piston block 7 to move. The first piston block 7 drives the tightening plate 2 to move through the cross column 8, so that multiple tightening plates 2 move outward simultaneously, achieving the purpose of tightening and fixing the bearing rings. When it is necessary to release the fixation of the bearing rings, part of the hydraulic oil is pumped out of the cylinder 4 through the external oil pump, and the tightening plate 2 can be separated from the bearing rings;

[0043] During the movement of the tightening plate 2 towards the inner wall of the bearing ring, the pressing block 12 first contacts the inner wall of the bearing ring, and the pressing block 12 is gradually pressed into the notch 9. The pressing block 12 presses the pressure sensor 10 through the elastic member 11, and the pressure sensor 10 generates a reading. When the pressing block 12 is completely pressed into the notch 9, it indicates that the pressure applied by the tightening plate 2 is within a stable range. If the pressure of a certain tightening plate 2 is too small, the pressing block 12 is not completely pressed into the notch 9, and the pressure needs to be adjusted through the pressure adjustment module;

[0044] When it is necessary to adjust the pressure of a certain tightening plate 2, start the first motor 16. The first motor 16 drives the rotating shaft 17 to rotate, and the first rotating shaft 17 drives the closing plate 18 to rotate. The closing plate 18 closes the horizontal pipe 6 corresponding to the tightening plate 2. Start the first electric push rod 14, and the first electric push rod 14 drives the second piston block 15 to move in the cylinder body 13. When the second piston block 15 moves upward, the pressure of the tightening plate 2 on the inner wall of the bearing ring can be increased. When the second piston block 15 moves downward, the pressure of the tightening plate 2 on the bearing ring can be reduced;

[0045] When there is a leak at a certain position of the sealing ring 3, the hydraulic oil will flow downward along the outer wall of the vertical pipe 5 and remain on the outer wall of the vertical pipe 5. The camera 23 needs to regularly check the sealing performance. Turn on the ultraviolet lamp 24, start the second motor 19, the second motor 19 drives the circular gear 20 to rotate, the circular gear 20 drives the ring plate 21 to rotate through the annular gear 22, the ring plate 21 drives the camera 23 and the ultraviolet lamp 24 to rotate, and the camera 23 takes pictures of the outer wall of the vertical pipe 5. Since the hydraulic oil contains a fluorescent agent component, when the ultraviolet lamp 24 irradiates the position where the hydraulic oil remains, this position will emit fluorescence, and the camera 23 can take pictures of the fluorescent area to realize the sealing performance monitoring of the sealing ring 3;

[0046] After the leakage point is discovered, before the staff handle it, in order to prevent excessive hydraulic oil leakage, temporary repair and sealing are required. The second electric push rod 31 is started, and the second electric push rod 31 drives the push plate 32 to move. The push plate 32 pushes the corresponding liquid inlet pipe 29, and the liquid inlet pipe 29 squeezes the corresponding arc-shaped bladder 26. After the arc-shaped bladder 26 is squeezed, the repair agent in the arc-shaped bladder 26 breaks through the sealing piece 28 and sprays out from the liquid outlet pipe 27, and sprays onto the leakage point. The repair agent will quickly solidify to temporarily seal the leakage point;

[0047] After the camera 23 discovers the leakage point, the camera 23 stays at this place, and the signal lamp 33 and the buzzer 34 are started to remind the staff that the sealing ring 3 leaks, and the leakage position is directly opposite to the signal lamp 33;

[0048] The data and images monitored by the pressure sensor 10 and the camera 23 are both transmitted to the main controller, and the main controller starts the corresponding module to respond by judgment.

[0049] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0050] Finally: The above is only the preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Adaptive hydraulic expansion fixture for thin-walled bearing rings, including a base (1), characterized in that, It further includes: A plurality of expansion plates (2), the plurality of expansion plates (2) are all slidably arranged on the base (1), a hydraulic module for driving the plurality of expansion plates (2) to move simultaneously is arranged on the base (1), a pressure monitoring module for real-time monitoring of the expansion pressure is arranged on the expansion plate (2), and a pressure adjustment module for real-time adjustment of the pressure magnitude is arranged on the hydraulic module; A sealing ring (3), the sealing ring (3) is arranged on the hydraulic module and is used for sealing the hydraulic module, and a sealing monitoring module for monitoring the sealing performance of the sealing ring (3) is arranged on the base (1).

2. The self-adaptive hydraulic expansion fixture for thin-walled bearing rings according to claim 1, wherein The hydraulic module includes a cylinder (4) fixedly connected to the middle of the base (1), a vertical pipe (5) is fixedly connected and communicated at the bottom of the cylinder (4), an external oil pump is arranged at one end of the vertical pipe (5), a plurality of horizontal pipes (6) are fixedly connected and communicated with the cylinder (4), a first piston block (7) is slidably arranged in the horizontal pipe (6), a cross column (8) is fixedly connected to the first piston block (7), the cross column (8) slidably penetrates through one end of the horizontal pipe (6), and one end of the cross column (8) is fixedly connected to the side wall of the corresponding expansion plate (2), hydraulic oil is arranged in the cylinder (4) and the horizontal pipe (6), and the sealing ring (3) is arranged at the connection between the cylinder (4) and the vertical pipe (5).

3. The self-adaptive hydraulic expansion fixture for thin-walled bearing rings according to claim 2, characterized in that The pressure monitoring module includes notches (9) opened on the plurality of expansion plates (2), a pressure sensor (10) is installed in the notches (9), an elastic member (11) is fixedly connected to one end of the pressure sensor (10), a pressing block (12) is fixedly connected to the side wall of the elastic member (11), the pressing block (12) is slidably connected in the notch (9), and the pressing block (12) extends out of the notch (9).

4. The self-adaptive hydraulic expansion fixture for the thin-wall bearing ring according to claim 3, characterized in that, The pressure adjustment module includes a cylinder body (13) fixedly connected and communicated with the horizontal pipe (6), a first electric push rod (14) is fixedly connected to the bottom of the cylinder body (13), a second piston block (15) slidably connected in the cylinder body (13) is fixedly connected to the output end of the first electric push rod (14), a first motor (16) is fixedly connected to the side wall of the cylinder (4), a rotating shaft (17) is fixedly connected to the output shaft of the first motor (16), the rotating shaft (17) is rotatably connected to the horizontal pipe (6), a closing plate (18) is fixedly connected to the outer wall of the rotating shaft (17), the closing plate (18) is in a state perpendicular to the first piston block (7), and the distance between the closing plate (18) and the cylinder (4) is less than the distance between the second piston block (15) and the cylinder (4).

5. The self-adaptive hydraulic expansion fixture for thin-walled bearing rings according to claim 4, characterized in that, The seal monitoring module includes a second motor (19). A circular groove is formed in the base (1). The second motor (19) is installed in the circular groove through a mounting plate. A circular gear (20) is fixedly connected to the output shaft of the second motor (19). A ring gear (22) is meshed with one side of the circular gear (20). A ring plate (21) rotatably connected in the circular groove is fixedly connected to the inner wall of the ring gear (22). A camera (23) is installed on the ring plate (21). An ultraviolet lamp (24) is installed on the camera (23). The camera (23) and the ultraviolet lamp (24) are directly below the sealing ring (3). The hydraulic oil contains a fluorescent agent component.

6. The self-adaptive hydraulic expansion fixture for thin-walled bearing rings according to claim 5, wherein A temporary sealing module for temporarily sealing the leakage point is provided on the sealing ring (3). The temporary sealing module includes an annular housing (25) fixedly connected to the bottom of the sealing ring (3). A plurality of elastic arc-shaped bladders (26) are arranged in the annular housing (25). A plurality of liquid outlet pipes (27) and liquid inlet pipes (29) are installed on the arc-shaped bladders (26). The liquid outlet pipes (27) are directly opposite to the connection between the sealing ring (3) and the vertical pipe (5). A plurality of elastic closing sheets (28) are fixedly connected in the liquid outlet pipes (27). An electromagnetic valve (30) is installed on the liquid inlet pipe (29). A second electric push rod (31) is installed on the camera (23). A push plate (32) is fixedly connected to the output end of the second electric push rod (31). The bottom end of the push plate (32) is directly opposite to one of the liquid inlet pipes (29).

7. The adaptive hydraulic expansion fixture for thin-walled bearing rings according to claim 6, wherein A seal alarm module is provided on the camera (23). The seal alarm module includes a signal lamp (33) installed at the bottom of the camera (23). A buzzer (34) is installed on the signal lamp (33).

8. The self-adaptive hydraulic expansion fixture for thin-walled bearing rings according to claim 7, characterized in that, The information collected by the pressure monitoring module and the seal monitoring module is transmitted to the main controller. The main controller can control the opening and closing of the hydraulic module, the pressure adjustment module, the temporary sealing module, and the seal alarm module.

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