Pump shaft bearing position abrasion repairing method and device

Abstract

The invention discloses a pump shaft bearing position abrasion repairing method and device, and relates to the technical field of pump shaft repairing. The method comprises the following steps that firstly, a detached pump shaft is fixed; 2, detecting the wear condition: accurately measuring the wear area of the bearing position, generating a detailed three-dimensional surface model, and recording the wear depth and range; 3, surface cleaning; and the abraded surface is cleaned, and rust, old coatings and impurities are removed. By integrating the laser contour scanner, the cold welding machine, the angle grinder, the polishing machine and other devices, high-precision detection, efficient repair and comprehensive inspection of pump shaft bearing position abrasion are achieved. Compared with a traditional method, the method has the advantages that the repairing precision and efficiency are improved, the operation difficulty and cost are reduced, the downtime is shortened, the service life of equipment is remarkably prolonged, the production efficiency of the equipment is remarkably improved, and the method has important economic value and application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of pump shaft repair, and particularly to a method and device for repairing the worn bearing position of a pump shaft. Background Art

[0002] In industrial production, pumps are important devices widely used for transporting various liquid media. As a key component of a pump, the bearing position of the pump shaft bears relatively large radial and axial loads. During long-term operation, due to the influence of various factors, the bearing position of the pump shaft is prone to wear. Wear of the bearing position will cause an increase in vibration and a decrease in efficiency during pump operation, and may even lead to equipment failures, affecting the normal progress of production.

[0003] Currently, the following are the main methods for repairing the worn bearing position of a pump shaft: Replacing with a new shaft: Although this method can completely solve the problem, it has a high cost and requires a long downtime, which has a great impact on production efficiency.

[0004] Surfacing: Metal materials are filled in the worn area through welding technology. However, surfacing is prone to causing heat stress concentration, resulting in shaft deformation or cracks, affecting the repair quality and the service life of the equipment.

[0005] Brush plating: This method has high requirements for equipment, complex operations, and limited coating thickness, making it difficult to meet the repair requirements for larger worn areas.

[0006] Manual repair: It includes using manual tools for grinding, filling, and polishing. This method has low efficiency, difficult-to-guarantee repair quality, and high requirements for the skills of operators.

[0007] In addition, most of the existing repair devices have a single function and cannot integrate multiple steps such as detection, repair, and inspection, resulting in a cumbersome repair process and low efficiency. For example, detecting the wear condition usually requires using professional measuring tools or equipment, while repair and inspection require different tools and equipment, increasing the complexity and cost of operation.

[0008] Therefore, a method and device for repairing the worn bearing position of a pump shaft are proposed. Summary of the Invention

[0009] The purpose of the present invention is: to solve the problems mentioned in the above background art, the present invention provides a method and device for repairing the worn bearing position of a pump shaft.

[0010] The present invention specifically adopts the following technical solutions to achieve the above purpose: A method for repairing the worn bearing position of a pump shaft, comprising the following steps: Step 1: Fix the removed pump shaft. Step 2: Detect wear conditions: Precisely measure the worn area of the bearing position, generate a detailed three-dimensional surface model, and record the wear depth and range. Step 3: Surface cleaning; Clean the worn surface to remove rust, old coatings, and impurities. Step 4: Local repair: Fill the worn area on the pump shaft with molten repair material and let the repaired area cool naturally. Step 5: Polish the repaired area. Step 6: Re-detection: Measure the dimensions of the repaired bearing position to ensure compliance with the design requirements, and check the surface quality of the repaired area to ensure there are no pores, cracks, or other defects.

[0011] Furthermore, in Step 1, the pump shaft is fixed by a pump shaft clamping mechanism; in Step 2, the wear condition is detected by a wear detection mechanism; in Step 3, the surface is cleaned by a grinding machine; in Step 4, local repair is performed by a cold welding machine and a welding head; in Step 5, polishing is carried out by a polishing machine; in Step 6, re-detection is performed by the wear detection mechanism.

[0012] Furthermore, it further includes a repair table. A side plate is fixedly connected to the left side of the top surface of the repair table. The installation pipe is arranged on the right side of the side plate. A rotation control mechanism for driving the pump shaft clamping mechanism to rotate is also arranged on the surface of the side plate. The wear detection mechanism is fixedly installed at the rear side of the top surface of the repair table. A position adjustment mechanism is arranged at the front side of the top surface of the repair table. A first support plate is fixedly installed above the position adjustment mechanism. A second support plate is arranged above the first support plate. A function switching mechanism for controlling the rotation of the second support plate is arranged on the surface of the first support plate. A ring-shaped frame is arranged above the second support plate. Three mounting rods are fixedly connected to the circumferential surface of the ring-shaped frame. An angle grinder and a polishing machine are respectively fixedly installed at the ends of two of the mounting rods. A cold welding machine is fixedly installed in the middle of the top surface of the ring-shaped frame. The output end of the cold welding machine is fixedly connected to a welding head, and the welding head is fixedly installed at the end of the other mounting rod.

[0013] Further, the pump shaft clamping mechanism includes the side plates fixedly installed on the left side of the top surface of the repair table. The pump shaft clamping mechanism includes a second motor, and the second motor is fixedly installed on the left side inner wall of the installation pipe. The output end of the second motor is fixedly connected to a first threaded rod. A threaded sleeve is threadedly connected to the surface of the first threaded rod. A connecting rod is hinged to the surface of the threaded sleeve. A chute is penetratingly opened on the surface of the installation pipe, and the inner wall of the chute is slidably connected to the connecting rod. The end of the connecting rod is hinged to a sliding sleeve. The right end of the installation pipe is fixedly connected to an installation frame, and the sliding sleeve is slidably connected to the surface of the installation frame. A clamping jaw is fixedly connected to the right side surface of the sliding sleeve. The number of the connecting rods, sliding sleeves, chutes and clamping jaws is three each, and they are all distributed in a circular array.

[0014] Further, the position adjusting mechanism includes a third motor, and the third motor is fixedly installed on the top surface of the repair table. The output end of the third motor is fixedly connected to a second threaded rod. A support frame is threadedly connected to the surface of the second threaded rod. A sliding column is fixedly connected to the top surface of the repair table, and the sliding column is slidably connected to the support frame. Four L-shaped brackets are fixedly connected to the top surface of the support frame, and the L-shaped brackets are fixedly connected to the bottom surface of the first support plate.

[0015] Further, the function switching mechanism includes a fourth motor, and the fourth motor is fixedly installed in the middle of the bottom surface of the first support plate. The output end of the fourth motor is fixedly connected to a third rotating shaft, and the top end of the third rotating shaft is fixedly connected to the second support plate. A pressing rod is fixedly connected to the bottom surface of the second support plate. A clamping block is fixedly connected to the bottom end of the pressing rod. An annular groove is fixedly connected to the top surface of the first support plate, and the annular groove is slidably connected to the clamping block.

[0016] Further, the height control mechanism includes an electric push rod, and the electric push rod is fixedly installed in the middle of the top surface of the second support plate, and the telescopic end of the electric push rod is fixedly connected to the middle of the bottom surface of the annular frame. A sliding tube is fixedly connected to the top surface of the second support plate. A vertical support rod is slidably connected to the inner wall of the sliding tube, and the top end of the vertical support rod is fixedly connected to the bottom surface of the annular frame.

[0017] Further, the rotation control mechanism includes a first motor, and the first motor is fixedly installed on the right side surface of the side plate. The output end of the first motor is fixedly connected to a first rotating shaft. The first rotating shaft is rotatably connected to the side plate. A driving pulley is fixedly sleeved on the left end of the first rotating shaft. A second rotating shaft is rotatably connected to the surface of the side plate. A driven pulley is fixedly sleeved on the left end of the second rotating shaft. A synchronous belt is engaged between the driven pulley and the driving pulley. The right end of the second rotating shaft is fixedly connected to the left end of the installation pipe. A fixed seat is fixedly connected to the right side surface of the side plate, and the fixed seat is rotatably connected to the second rotating shaft. The left end of the installation pipe is rotatably connected to the inner wall of the fixed seat.

[0018] Furthermore, the wear detection mechanism includes a fixing frame, which is fixedly installed at the rear side of the top surface of the repair table, and a laser profile scanner is fixedly installed at the end of the fixing frame. The beneficial effects of the present invention are as follows: 1. The present invention uses a laser profile scanner to accurately measure the worn area of the bearing position, generate a detailed three-dimensional surface model, and can accurately reflect the wear depth and range. Compared with traditional measuring tools, the laser profile scanner has higher accuracy and more comprehensive detection capabilities, and can provide more accurate data support for repair. The laser profile scanner can ensure that the size of the repaired bearing position meets the design requirements and check the surface quality of the repaired area to ensure that there are no pores, cracks or other defects. This comprehensive inspection mechanism can effectively guarantee the repair quality and extend the service life of the equipment.

[0019] 2. The present invention integrates a variety of repair tools such as a cold welding machine, a angle grinder and a polishing machine, and can complete multiple steps such as surface cleaning, local repair and polishing processing within one device. This integrated design greatly improves the repair efficiency, reduces the operation time and labor intensity.

[0020] 3. The cold welding technology can repair the worn area under the condition of low heat input, avoiding the deformation and crack problems caused by thermal stress concentration in the traditional surfacing method. By precisely controlling the filling and cooling process of the cold welding material, the bonding strength and surface quality of the repaired area are ensured.

[0021] 4. The device is equipped with a rotation control mechanism, a position adjustment mechanism and a function switching mechanism, and can realize the automatic rotation of the pump shaft and the precise positioning of the repair tool. This automated design improves the accuracy and consistency of the operation and reduces the influence of human factors on the repair quality. Brief Description of the Drawings

[0022] Figure 1 is a schematic flow chart of the repair method of the present invention; Figure 2 is a schematic three-dimensional structure diagram of the device of the present invention; Figure 3 is a schematic structure diagram of the rotation control mechanism of the present invention; Figure 4 is a front sectional view of the installation pipe structure of the present invention; Figure 5 is a schematic structure diagram of the position adjustment mechanism of the present invention; Figure 6 is a bottom view of the partial structure of the present invention; Figure 7 is a schematic structure diagram of the first support plate of the present invention; Figure 8 is a right view of the installation frame structure of the present invention; Reference numerals: 1, repair table; 2, side plate; 3, mounting pipe; 4, rotation control mechanism; 401, first motor; 402, first rotating shaft; 403, driving pulley; 404, second rotating shaft; 405, driven pulley; 406, synchronous belt; 407, fixed seat; 5, pump shaft clamping mechanism; 501, second motor; 502, first threaded rod; 503, threaded sleeve; 504, connecting rod; 505, sliding sleeve; 506, sliding groove; 507, clamping jaw; 508, mounting bracket; 6, wear detection mechanism; 601, fixed bracket; 602, laser profilometer; 7, position adjustment mechanism; 701, third motor; 702, second threaded rod; 703, support frame; 704, sliding column; 705, L-shaped bracket; 8, second support plate; 9, height control mechanism; 901, electric push rod; 902, sliding pipe; 903, vertical strut; 10, annular frame; 11, function switching mechanism; 111, fourth motor; 112, second rotating shaft; 113, pressing rod; 114, annular groove; 115, clamping block; 12, first support plate; 13, mounting rod; 14, angle grinder; 15, polishing machine; 16, cold welder; 17, welding head. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein usually can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0025] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0026] The electrical components appearing in this text are all electrically connected to an external main controller and 220V mains power, and the main controller can be a conventional known device such as a computer for control.

[0027] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", "upper", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0028] As Figures 1 to 8 shown, the method for repairing the worn bearing position of the pump shaft includes the following steps: Step 1: Fix the removed pump shaft. Step 2: Detect the wear condition: precisely measure the worn area of the bearing position to generate a detailed three-dimensional surface model, and record the wear depth and range. Using a laser profile scanner in conjunction with a computer program to generate a three-dimensional surface model is a mature existing technology, and its specific principle will not be elaborated here.

[0029] Step 3: Surface cleaning; clean the worn surface to remove rust, old coatings, and impurities. Step 4: Local repair: Fill the worn area on the pump shaft with the molten repair material and let the repaired area cool naturally. Step 5: Polish the repaired area. Step 6: Re-detection: Measure the size of the repaired bearing position to ensure compliance with the design requirements, and check the surface quality of the repaired area to ensure there are no pores, cracks, or other defects.

[0030] In Step 1, the pump shaft is fixed by the pump shaft clamping mechanism 5; in Step 2, the wear condition is detected by the wear detection mechanism 6; in Step 3, the surface is cleaned by the angle grinder 14; in Step 4, local repair is performed by the cold welding machine 16 and the welding head 17; in Step 5, polishing is performed by the polishing machine 15; in Step 6, re-detection is performed by the wear detection mechanism 6.

[0031] A device applying the above method for repairing the worn bearing position of the pump shaft is characterized in that it further includes a repair table 1. A side plate 2 is fixedly connected to the left side of the top surface of the repair table 1. An installation pipe 3 is arranged on the right side of the side plate 2. A rotation control mechanism 4 for driving the rotation of the pump shaft clamping mechanism 5 is also arranged on the surface of the side plate 2. A wear detection mechanism 6 is fixedly installed on the rear side of the top surface of the repair table 1. A position adjustment mechanism 7 is arranged on the front side of the top surface of the repair table 1. A first support plate 12 is fixedly installed above the position adjustment mechanism 7. A second support plate 8 is arranged above the first support plate 12. A function switching mechanism 11 for controlling the rotation of the second support plate 8 is arranged on the surface of the first support plate 12. A ring-shaped frame 10 is arranged above the second support plate 8. Three installation rods 13 are fixedly connected to the circumferential surface of the ring-shaped frame 10. An angle grinder 14 and a polishing machine 15 are respectively fixedly installed at the ends of two of the installation rods 13. A cold welding machine 16 is fixedly installed in the middle of the top surface of the ring-shaped frame 10. The output end of the cold welding machine 16 is fixedly connected to a welding head 17, and the welding head 17 is fixedly installed at the end of the other installation rod 13. More specifically, the end of the pump shaft is clamped and fixed by the pump shaft clamping mechanism 5. The rotation of the installation pipe 3 and the pump shaft clamping mechanism 5 can be controlled by the rotation control mechanism 4, so as to drive the rotation of the pump shaft. In cooperation with the wear detection mechanism 6, the pump shaft can be comprehensively scanned to obtain information on the worn area. Subsequently, through the operation of the function switching mechanism 11, the second support plate 8, the height control mechanism 9 and the ring-shaped frame 10 are driven to rotate, so that the angle grinder 14 rotates to the rear side. Through the operation of the position adjustment mechanism 7, the first support plate 12, the second support plate 8, the height control mechanism 9 and the ring-shaped frame 10 are controlled to move, so that the angle grinder 14 approaches the worn position. Then, the height control mechanism 9 is used to drive the ring-shaped frame 10 and the installation rod 13 to descend, so that the angle grinder 14 contacts the surface of the pump shaft, and the worn position can be cleaned. After the cleaning is completed, the welding head 17 is controlled to reach the worn position in a similar step, and then the repair material is used in cooperation, so that the repair material covers the worn area. After waiting for the cooling to be completed, the polishing machine 15 is controlled to reach the repair area, and polishing treatment is carried out by the polishing machine 15. Subsequently, the worn detection mechanism 6 is used to scan and check the repaired area to confirm the repair quality, so as to complete the repair.

[0032] The pump shaft clamping mechanism 5 includes side plates 2 fixedly installed on the left side of the top surface of the repair table 1. The pump shaft clamping mechanism 5 includes a second motor 501, and the second motor 501 is fixedly installed on the left side inner wall of the installation pipe 3. The output end of the second motor 501 is fixedly connected to a first threaded rod 502. A threaded sleeve 503 is threadedly connected to the surface of the first threaded rod 502. A connecting rod 504 is hinged to the surface of the threaded sleeve 503. A chute 506 is penetratingly formed on the surface of the installation pipe 3, and the inner wall of the chute 506 is slidably connected to the connecting rod 504. The end of the connecting rod 504 is hinged to a sliding sleeve 505. The right end of the installation pipe 3 is fixedly connected to an installation frame 508, and the sliding sleeve 505 is slidably connected to the surface of the installation frame 508. The right side surface of the sliding sleeve 505 is fixedly connected to a clamping jaw 507. The number of the connecting rod 504, the sliding sleeve 505, the chute 506, and the clamping jaw 507 is three, and they are all distributed in a circular array. It should be noted that the left end of the pump shaft is placed between the three clamping jaws 507. Subsequently, the second motor 501 drives the first threaded rod 502 to rotate. Under the action of the thread, the threaded sleeve 503 is driven to move, thereby pulling the connecting rod 504 to deflect. The end of the connecting rod 504 will pull the sliding sleeve 505 to slide along the surface of the installation frame 508, thereby driving the clamping jaw 507 to move. The three clamping jaws 507 will close, thereby clamping and fixing the surface of the pump shaft.

[0033] The position adjustment mechanism 7 includes a third motor 701, and the third motor 701 is fixedly installed on the top surface of the repair table 1. The output end of the third motor 701 is fixedly connected to a second threaded rod 702. A support frame 703 is threadedly connected to the surface of the second threaded rod 702. A sliding column 704 is fixedly connected to the top surface of the repair table 1, and the sliding column 704 is slidably connected to the support frame 703. The top surface of the support frame 703 is fixedly connected to four L-shaped brackets 705, and the L-shaped brackets 705 are fixedly connected to the bottom surface of the first support plate 12. It should be noted that by driving the second threaded rod 702 to rotate through the third motor 701, under the action of the thread on its surface, the support frame 703 can be driven to slide along the surface of the sliding column 704, thereby driving the L-shaped brackets 705 and the first support plate 12 to move horizontally.

[0034] The function switching mechanism 11 includes a fourth motor 111, and the fourth motor 111 is fixedly installed in the middle of the bottom surface of the first support plate 12. The output end of the fourth motor 111 is fixedly connected to a third rotating shaft 112, and the top end of the third rotating shaft 112 is fixedly connected to the second support plate 8. A pressing rod 113 is fixedly connected to the bottom surface of the second support plate 8, a clamping block 115 is fixedly connected to the bottom end of the pressing rod 113, and an annular groove 114 is fixedly connected to the top surface of the first support plate 12, and the annular groove 114 is slidably connected to the clamping block 115. More specifically, by operating the fourth motor 111, the third rotating shaft 112 can be driven to rotate, thereby driving the second support plate 8, the height control mechanism 9, and the annular frame 10 to rotate. During the rotation of the second support plate 8, the pressing rod 113 can be driven to rotate, thereby driving the clamping block 115 to rotate along the surface of the annular groove 114. Through the joint cooperation of the pressing rod 113, the clamping block 115, and the annular groove 114, the second support plate 8 is strengthened and supported, making the rotation process more stable.

[0035] The height control mechanism 9 includes an electric push rod 901, and the electric push rod 901 is fixedly installed in the middle of the top surface of the second support plate 8. The telescopic end of the electric push rod 901 is fixedly connected to the middle of the bottom surface of the annular frame 10. A sliding tube 902 is fixedly connected to the top surface of the second support plate 8. A vertical support rod 903 is slidably connected to the inner wall of the sliding tube 902, and the top end of the vertical support rod 903 is fixedly connected to the bottom surface of the annular frame 10. It should be noted that by operating the electric push rod 901, the annular frame 10 can be driven to move in the vertical direction. During the movement of the annular frame 10, the vertical support rod 903 can be driven to slide along the inner wall of the sliding tube 902. Through the joint cooperation of the sliding tube 902 and the vertical support rod 903, the annular frame 10 is stably supported.

[0036] The rotation control mechanism 4 includes a first motor 401, and the first motor 401 is fixedly installed on the right side surface of the side plate 2. The output end of the first motor 401 is fixedly connected with a first rotating shaft 402. The first rotating shaft 402 is rotatably connected to the side plate 2. The left end of the first rotating shaft 402 is fixedly sleeved with a driving pulley 403. A second rotating shaft 404 is rotatably connected to the surface of the side plate 2. The left end of the second rotating shaft 404 is fixedly sleeved with a driven pulley 405. A synchronous belt 406 is engaged between the driven pulley 405 and the driving pulley 403. The right end of the second rotating shaft 404 is fixedly connected to the left end of the mounting pipe 3. A fixed seat 407 is fixedly connected to the right side surface of the side plate 2, and the fixed seat 407 is rotatably connected to the second rotating shaft 404. The left end of the mounting pipe 3 is rotatably connected to the inner wall of the fixed seat 407. More specifically, by driving the first rotating shaft 402 to rotate through the first motor 401, the driving pulley 403 can be driven to rotate. Under the transmission of the synchronous belt 406, the driven pulley 405 and the second rotating shaft 404 can be driven to rotate, so that the mounting pipe 3 can be driven to rotate, thereby controlling the pump shaft clamping mechanism 5 and the rotation of the pump shaft. During the rotation of the mounting pipe 3, the mounting pipe 3 is strongly supported by the fixed seat 407.

[0037] The wear detection mechanism 6 includes a fixed frame 601, and the fixed frame 601 is fixedly installed at the rear side of the top surface of the repair table 1. A laser profilometer 602 is fixedly installed at the end of the fixed frame 601. More specifically, the surface of the pump shaft can be scanned by the laser profilometer 602. Cooperating with the rotation control mechanism 4 to drive the mounting pipe 3, the pump shaft clamping mechanism 5 and the pump shaft to rotate, the surface of the pump shaft can be comprehensively scanned, so as to obtain the wear condition of the pump shaft surface. And after the repair is completed, the repair quality can also be detected.

[0038] In summary: The present invention uses a laser profile scanner 602 to accurately measure the worn area of the bearing position, generating a detailed three-dimensional surface model that can accurately reflect the wear depth and range. Compared with traditional measurement tools, the laser profile scanner 602 has higher accuracy and more comprehensive detection capabilities, providing more accurate data support for repair. The laser profile scanner 602 can ensure that the dimensions of the repaired bearing position meet the design requirements and inspect the surface quality of the repaired area to ensure there are no pores, cracks or other defects. This comprehensive inspection mechanism can effectively guarantee the repair quality and extend the service life of the equipment. The present invention integrates a variety of repair tools such as a cold welding machine 16, a angle grinder 14 and a polishing machine 15, capable of completing multiple steps such as surface cleaning, local repair and polishing processing within one device. This integrated design greatly improves the repair efficiency, reducing the operation time and labor intensity. The cold welding technology can repair the worn area under the condition of low heat input, avoiding the deformation and crack problems caused by heat stress concentration in the traditional surfacing method. By precisely controlling the filling and cooling process of the cold welding material, the bonding strength and surface quality of the repaired area are ensured. The device is equipped with a rotation control mechanism 4, a position adjustment mechanism 7 and a function switching mechanism 11, capable of realizing the automatic rotation of the pump shaft and the precise positioning of the repair tool. This automated design improves the accuracy and consistency of the operation, reducing the influence of human factors on the repair quality.

[0039] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for repairing the worn bearing position of a pump shaft, characterized in that, It includes the following steps: Step 1: Fix the removed pump shaft; Step 2: Detect the wear condition: precisely measure the worn area of the bearing position to generate a detailed three-dimensional surface model, and record the wear depth and range; Step 3: Surface cleaning; Clean the worn surface to remove rust, old coatings, and impurities; Step 4: Local repair: Fill the worn area on the pump shaft with molten repair material and let the repaired area cool naturally; Step 5: Polish the repaired area; Step 6: Re-detection: Measure the size of the repaired bearing position to ensure it meets the design requirements, and check the surface quality of the repaired area to ensure there are no pores, cracks, or other defects.

2. The method for repairing the worn bearing position of the pump shaft according to claim 1, wherein, In Step 1, the pump shaft is fixed by a pump shaft clamping mechanism (5); in Step 2, the wear condition is detected by a wear detection mechanism (6); in Step 3, surface cleaning is performed by a grinding machine (14); in Step 4, local repair is carried out by a cold welding machine (16) and a welding head (17); in Step 5, polishing is performed by a polishing machine (15); in Step 6, re-detection is carried out by the wear detection mechanism (6).

3. Device for applying the method for repairing wear of the bearing position of the pump shaft according to claim 2, characterized in that, It further includes a repair table (1). On the left side of the top surface of the repair table (1), a side plate (2) is fixedly connected. The installation pipe (3) is arranged on the right side of the side plate (2). On the surface of the side plate (2), a rotation control mechanism (4) for driving the pump shaft clamping mechanism (5) to rotate is provided. The wear detection mechanism (6) is fixedly installed at the rear side of the top surface of the repair table (1). A position adjustment mechanism (7) is arranged at the front side of the top surface of the repair table (1). Above the position adjustment mechanism (7), a first support plate (12) is fixedly installed. Above the first support plate (12), a second support plate (8) is arranged. On the surface of the first support plate (12), a function switching mechanism (11) for controlling the rotation of the second support plate (8) is provided. Above the second support plate (8), an annular frame (10) is arranged. On the circumferential surface of the annular frame (10), three mounting rods (13) are fixedly connected. The ends of two of the mounting rods (13) are respectively fixedly installed with a grinding machine (14) and a polishing machine (15). In the middle of the top surface of the annular frame (10), a cold welding machine (16) is fixedly installed. The output end of the cold welding machine (16) is fixedly connected with a welding head (17), and the welding head (17) is fixedly installed at the end of the other mounting rod (13).

4. The pump shaft bearing position wear repair device according to claim 3, characterized in that, The pump shaft clamping mechanism (5) includes that the side plates (2) are fixedly installed on the left side of the top surface of the repair table (1). The pump shaft clamping mechanism (5) includes a second motor (501), and the second motor (501) is fixedly installed on the left side inner wall of the installation pipe (3). The output end of the second motor (501) is fixedly connected with a first threaded rod (502). A threaded sleeve (503) is threadedly connected to the surface of the first threaded rod (502). A connecting rod (504) is hinged to the surface of the threaded sleeve (503). A chute (506) is penetratingly opened on the surface of the installation pipe (3), and the inner wall of the chute (506) is slidably connected with the connecting rod (504). The end of the connecting rod (504) is hinged with a sliding sleeve (505). The right end of the installation pipe (3) is fixedly connected with an installation frame (508), and the sliding sleeve (505) is slidably connected with the surface of the installation frame (508). The right side surface of the sliding sleeve (505) is fixedly connected with a clamping jaw (507). The number of the connecting rod (504), the sliding sleeve (505), the chute (506) and the clamping jaw (507) is three, and they are all distributed in a circular array.

5. The pump shaft bearing position wear repair device according to claim 3, characterized in that, The position adjusting mechanism (7) includes a third motor (701), and the third motor (701) is fixedly installed on the top surface of the repair table (1). The output end of the third motor (701) is fixedly connected with a second threaded rod (702). A support frame (703) is threadedly connected to the surface of the second threaded rod (702). A sliding column (704) is fixedly connected to the top surface of the repair table (1), and the sliding column (704) is slidably connected with the support frame (703). Four L-shaped brackets (705) are fixedly connected to the top surface of the support frame (703), and the L-shaped brackets (705) are fixedly connected with the bottom surface of the first support plate (12).

6. The pump shaft bearing position wear repair device according to claim 5, characterized in that The function switching mechanism (11) includes a fourth motor (111), and the fourth motor (111) is fixedly installed in the middle of the bottom surface of the first support plate (12). The output end of the fourth motor (111) is fixedly connected with a third rotating shaft (112), and the top end of the third rotating shaft (112) is fixedly connected with the second support plate (8). A pressing rod (113) is fixedly connected to the bottom surface of the second support plate (8). The bottom end of the pressing rod (113) is fixedly connected with a clamping block (115). An annular groove (114) is fixedly connected to the top surface of the first support plate (12), and the annular groove (114) is slidably connected with the clamping block (115).

7. The pump shaft bearing position wear repair device according to claim 6, characterized in that, The height control mechanism (9) includes an electric push rod (901), and the electric push rod (901) is fixedly installed in the middle of the top surface of the second support plate (8), and the telescopic end of the electric push rod (901) is fixedly connected with the middle of the bottom surface of the annular frame (10). A sliding pipe (902) is fixedly connected to the top surface of the second support plate (8). A vertical support rod (903) is slidably connected to the inner wall of the sliding pipe (902), and the top end of the vertical support rod (903) is fixedly connected with the bottom surface of the annular frame (10).

8. The pump shaft bearing position wear repair device according to claim 4, characterized in that The rotation control mechanism (4) includes a first motor (401), and the first motor (401) is fixedly installed on the right side surface of the side plate (2). The output end of the first motor (401) is fixedly connected to a first rotating shaft (402). The first rotating shaft (402) is rotatably connected to the side plate (2). The left end of the first rotating shaft (402) is fixedly sleeved with a driving pulley (403). A second rotating shaft (404) is rotatably connected to the surface of the side plate (2). The left end of the second rotating shaft (404) is fixedly sleeved with a driven pulley (405). A synchronous belt (406) is engaged between the driven pulley (405) and the driving pulley (403). The right end of the second rotating shaft (404) is fixedly connected to the left end of the installation pipe (3). A fixed seat (407) is fixedly connected to the right side surface of the side plate (2), and the fixed seat (407) is rotatably connected to the second rotating shaft (404). The left end of the installation pipe (3) is rotatably connected to the inner wall of the fixed seat (407).

9. The pump shaft bearing position wear repair device according to claim 8, characterized in that The wear detection mechanism (6) includes a fixed frame (601), and the fixed frame (601) is fixedly installed at the rear side of the top surface of the repair table (1). A laser profilometer (602) is fixedly installed at the end of the fixed frame (601).

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