Long shaft equipment bearing removal tool and method

Abstract

The application relates to the technical field of long-shaft equipment bearing dismounting, in particular to a long-shaft equipment bearing dismounting tool and method, which comprises a screw rod main body, the outer part of the screw rod main body is integrally formed with a threaded section, the outer part of the threaded section is slidably connected with two fasteners, and the fasteners are provided with a dismounting mechanism for bearing dismounting on one side; the dismounting mechanism can be used to help the front baffle to deeply enter a narrow gap, to build a stable stress fulcrum and to perfectly adapt to the narrow space dismounting working condition; the rubber gasket in the semicircular groove can prevent metal hard contact and effectively protect the bearing inner ring from being bumped and scratched. By replacing the front baffles of different specifications, different shaft diameters can be adapted, high-voltage motors, centrifugal compressors and mainstream long-shaft bearings are comprehensively covered, the application range is wide, the operation of the screw rod main body and the pushing device is stable and reliable, the overall dismounting is simple, convenient and supports repeated use, the working efficiency is improved, and the equipment maintenance cost is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of bearing removal technology for long-shaft equipment, specifically to a tool and method for removing bearings from long-shaft equipment. Background Technology

[0002] Long shaft bearings for large rotating equipment are suitable for ultra-long drive shafts such as fans, rolling mills, turbines, and ball mills. For example, they are suitable for long cantilever shaft structures of high-voltage motors of 355kW and above and centrifugal compressors. The cantilever length is ≥500mm, which supports long shafts with large spans, high loads, and continuous high-speed rotation. They mostly adopt sliding bearing shells or heavy-duty self-aligning roller bearing structures, which can compensate for the deflection and coaxiality deviation caused by the weight of the long shaft and thermal expansion. When the bearing has a problem and needs to be replaced, the corresponding disassembly tools are required for maintenance and replacement.

[0003] For example, a bearing disassembly device and its method of use, as described in application number CN202510402305.3, involves rotating a positioning support to abut against the transmission shaft inside the bearing to be disassembled. This causes the positioning platform and the limiting rod to move away from the transmission shaft, resulting in the bearing being pulled away by the limiting rod and gradually detaching from the transmission shaft. This achieves convenient and efficient bearing disassembly. During the disassembly process, only the positioning support needs to be rotated. The force transmission path is reasonable, the operation is simple, the difficulty of bearing disassembly is reduced, the disassembly efficiency is improved, and damage to the bearing or transmission shaft and other components is avoided.

[0004] In summary, the existing technology has the following technical problems: relying on the circumferential limiting tie rod to embed into the bearing gap for operation, the tie rod itself has a physical thickness and assembly fit allowance, making it difficult to extend into a closed and narrow gap within 50mm, and unable to build a stable support fulcrum; it is completely unsuitable for typical equipment operating conditions such as high-voltage motors and compressors. If temporary tooling is welded on-site to assist the operation, problems such as poor positioning accuracy and large deviation will occur. The overall applicability is significantly limited. Therefore, we provide a tool and method for removing bearings from long-shaft equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a tool and method for removing bearings from long-shaft equipment, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A bearing removal tool and method for long-shaft equipment includes a lead screw body. The lead screw body has an integrally formed threaded section on its exterior, and two fasteners are slidably connected to the outside of the threaded section. A removal mechanism for disassembling and assembling the bearing is provided on one side of the fasteners, and a buffer mechanism for preventing collisions during the removal process is provided on one side of the removal mechanism. An overpressure warning mechanism is provided above the buffer mechanism.

[0007] Preferably, the removal mechanism includes a front baffle, which is sleeved on one side of the fastener outside the threaded section, and a rear baffle is sleeved on one side of another fastener outside the threaded section. The front baffle and the rear baffle are provided with mounting holes at the positions corresponding to the threaded section.

[0008] Preferably, the front baffle has a semi-circular groove inside, and a long cantilever shaft extends through the semi-circular groove. An inner oil cap is fitted on one side of the front baffle outside the long cantilever shaft, and a bearing inner ring is fitted on the other side of the front baffle outside the long cantilever shaft. A pushing device is embedded in the outer wall of the rear baffle facing the long cantilever shaft, and a rubber bushing is embedded in the side of the semi-circular groove facing the long cantilever shaft.

[0009] Preferably, the buffer mechanism includes a reinforcing plate, which is fixedly installed on the outer wall of the front baffle, and a sheath made of cast-type ultra-thin polyurethane elastomer is fixedly installed at the front end of the reinforcing plate. A shielding shell is uniformly embedded at equal intervals at the front end of the reinforcing plate, and a permanent magnet is embedded inside the shielding shell. A magnetorheological elastomer is inserted inside the sheath.

[0010] Preferably, the magnetorheological elastomer is fitted with a rubber support sleeve facing the outer wall of the sheath, and a reinforcing rib is inserted through the inside of the support sleeve.

[0011] Preferably, the magnetorheological elastomer has vertical plates evenly embedded at equal intervals inside, and the outer wall of the vertical plates is fixedly mounted with horizontal plates in a vertical form.

[0012] Preferably, the front edge area of ​​the sheath is fitted with a rubber edge strip, and the sheath is covered with a wear-resistant strip on the entire piece corresponding to the position of the long cantilever shaft.

[0013] Preferably, the warning mechanism includes an insulating film, which is laid in one piece on the front end of the permanent magnet, and a piezoelectric ceramic sheet is fixedly installed on the outer wall of the magnetorheological elastomer facing the insulating film. A high-hardness engineering plastic elastic limiting strip is fixedly installed on the front end of the piezoelectric ceramic sheet.

[0014] Preferably, an assembly shell for assembling cables is fixedly installed on one side of the front shielding shell of the reinforcing plate, and a hollow protective shell protrudes from the top of the reinforcing plate. An embedded plate is fixedly installed at one end of the protective shell that penetrates the reinforcing plate, and a positioning hole for limiting the cable is opened on the inner wall of the embedded plate. A warning module is fixedly installed above the embedded plate inside the protective shell.

[0015] A method for removing bearings from long-shaft equipment: S1. Select a front baffle of the corresponding size of the semicircular groove according to the shaft diameter, and ensure that the semicircular groove is interference-fitted into the gap between the inner oil cover and the inner ring of the bearing. S2. Assemble the lead screw body and adjust the front and rear baffles through the threaded section and fasteners to match the length of the long cantilever shaft, so that the front baffle fits the inner oil cover. S3. Place a jacking device between the rear baffle and the end face of the long cantilever shaft, and apply pressure in stages until the bearing comes out, thereby achieving dismantling.

[0016] As can be seen from the above description, the technical solution described in this application can certainly solve the technical problem that this application aims to address.

[0017] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects: 1. This invention, through the cooperation of the dismantling mechanism, can reach into narrow gaps with the help of the front baffle to establish a stable force support point, perfectly adapting to dismantling and assembly conditions in narrow spaces; the rubber bushing in the semi-circular groove can prevent hard metal contact, effectively protecting the inner ring of the bearing from bumps and scratches. By changing the front baffle of different specifications, it can be adapted to different shaft diameters, comprehensively covering the mainstream long shaft bearings of high-pressure motors and centrifugal compressors, with a wide range of applications. When combined with the lead screw body and the jacking device, the operation is stable and reliable. The whole assembly and disassembly is simple and can be reused repeatedly, improving work efficiency while significantly reducing equipment maintenance costs. 2. This invention, through a buffer mechanism and multiple sets of shielding shells embedded in the reinforcing plate on the outside of the front baffle, can concentrate and guide the magnetic field of the permanent magnet, allowing the magnetic field to act precisely on the magnetorheological elastomer inside the sheath. This material can adaptively switch from flexible to rigid according to load changes. Under low pressure, it plays a flexible buffering role to prevent parts from being bumped. When the axial pressure increases, the distance between the magnetorheological elastomer and the permanent magnet decreases and the stiffness increases, providing both high-strength support and buffering capabilities. Relying on the interlocking bracket composed of the support sleeve, reinforcing ribs, and vertical and horizontal plates, the deformation of the magnetorheological elastomer can be constrained to prevent it from failing under pressure. The thickened pressure strips and wear-resistant strips equipped on the sheath significantly improve the edge wear resistance and reduce friction damage. The entire structure has high magnetic field utilization and strong dynamic adaptability. The multiple protective structures effectively delay the aging and wear of components. The overall structure is stable and has outstanding wear resistance and deformation resistance. 3. This invention, through the cooperation of a warning mechanism, sets an insulating film between the permanent magnet and the piezoelectric ceramic sheet to achieve mutual isolation between the magnetic circuit and the electrical circuit, eliminating cross-interference between signals and magnetic fields. The elastic limiting strip on the outside of the piezoelectric ceramic sheet can limit the maximum compression of the magnetorheological elastomer, preventing it from being damaged by overload. During operation, the magnetorheological elastomer deforms under pressure, causing the piezoelectric ceramic sheet to generate an electrical signal, which is transmitted to the warning module. This module integrates a passive rectifier energy storage unit and a passive piezoelectric buzzer, which immediately triggers an audible and visual alarm when the load exceeds the limit. The warning module is installed on the top of the reinforcing plate and is sealed and protected by a protective shell and an embedded plate. The positioning holes of the embedded plate can neatly store cables. The entire structure can not only ensure the stable operation of the magnetoelectric system, but also build a double safety barrier through mechanical limiting and overload warning, effectively avoiding the risk of overload. At the same time, the module has a high degree of integration, standardized wiring, safe and reliable operation, and is easier to inspect and maintain later. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the fastener structure of the present invention; Figure 3 This is a schematic diagram of the front baffle structure of the present invention; Figure 4 This is a schematic diagram of the sheath structure of the present invention; Figure 5 This is a schematic diagram of the magnetorheological elastomer structure of the present invention; Figure 6 This is a schematic diagram of the piezoelectric ceramic sheet structure of the present invention; Figure 7 This is a schematic diagram of the elastic limiting strip structure of the present invention; Figure 8 This is a schematic diagram of the positioning hole structure of the present invention.

[0019] In the diagram: 1. Lead screw body; 2. Threaded section; 3. Fastener; 4. Removal mechanism; 401. Front baffle; 402. Rear baffle; 403. Mounting hole; 404. Semicircular groove; 405. Long cantilever shaft; 406. Inner oil cover; 407. Bearing inner ring; 408. Pushing device; 409. Rubber bushing; 5. Buffer mechanism; 501. Reinforcing plate; 502. Sheath; 503. Shielding shell; 504. 505. Permanent magnet; 506. Magnetorheological elastomer; 507. Support sleeve; 508. Reinforcing rib; 509. Vertical plate; 510. Horizontal plate; 511. Edge pressing strip; 512. Wear-resistant strip; 6. Warning mechanism; 601. Insulating film; 602. Piezoelectric ceramic sheet; 603. Elastic limit strip; 604. Assembly shell; 605. Protective shell; 606. Embedded plate; 607. Positioning hole; 608. Warning module. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] Implementation Case 1 As attached Figure 1 and Figure 3 As shown, the present invention provides a technical solution: a bearing removal tool and method for long-shaft equipment, including a lead screw body 1, a threaded section 2 integrally formed on the outside of the lead screw body 1, two fasteners 3 slidably connected to the outside of the threaded section 2, a removal mechanism 4 for bearing disassembly and assembly provided on one side of the fasteners 3, a buffer mechanism 5 for preventing collisions during the removal process provided on one side of the removal mechanism 4, and a warning mechanism 6 for overpressure warning provided above the buffer mechanism 5. The removal mechanism 4 includes a front baffle 401, which is sleeved on one side of the fasteners 3 outside the threaded section 2, and another fastener outside the threaded section 2... A rear baffle 402 is fitted on one side of 3. Mounting holes 403 are opened on both the front baffle 401 and the rear baffle 402 at the positions corresponding to the threaded section 2. A semi-circular groove 404 is opened inside the front baffle 401. A long cantilever shaft 405 passes through the interior of the semi-circular groove 404. An inner oil cover 406 is fitted on one side of the front baffle 401 outside the long cantilever shaft 405. A bearing inner ring 407 is fitted on the other side of the front baffle 401 outside the long cantilever shaft 405. A pushing device 408 is embedded in the outer wall of the rear baffle 402 facing the long cantilever shaft 405. A rubber bushing 409 is embedded in the side of the semi-circular groove 404 facing the long cantilever shaft 405. S1. Select a front baffle 401 with the corresponding size of the semi-circular groove 404 according to the shaft diameter, and ensure that the semi-circular groove 404 is interference-fitted into the gap between the inner oil cover 406 and the inner ring 407 of the bearing. S2. Assemble the lead screw body 1 and through the threaded section 2 and fastener 3, adjust the front baffle 401 and the rear baffle 402 to match the length of the long cantilever shaft 405, so that the front baffle 401 fits the inner oil cover 406. S3. Place a jacking device 408 between the rear baffle 402 and the end face of the long cantilever shaft 405, and apply pressure in stages until the bearing comes out, thereby achieving dismantling; During operation, the front baffle 401 with the interference-fit semi-circular groove 404 is inserted into the gap between the bearing inner ring 407 and the inner oil cover 406; the lead screw body 1, equipped with an M30×3.5 threaded section, passes through the front baffle 401 and the rear baffle 402, and after adjusting its position according to the length of the long cantilever shaft 405, it is locked and fixed by the fastener 3. A rubber bushing 409 is pasted inside the semi-circular groove 404 to prevent contact bumps and scratches on the workpiece. A jack-type jacking device 408 is installed between the rear baffle 402 and the end of the long cantilever shaft 405. It relies on the output of an axial thrust of no less than 30 tons to complete the bearing disassembly. It can penetrate into narrow gaps to establish a stable support point, adapting to narrow space disassembly and assembly conditions. It has good workpiece protection effect, wide overall applicability, and strong operational reliability. By replacing the front baffle 401, it can be adapted to shaft diameters of Φ100~150mm, covering most long shaft bearings of high-pressure motors and centrifugal compressors, further improving applicability. It is easy to disassemble and reassemble, reusable, and reduces overall cost. It is worth noting that the radius of the semi-circular groove 404 is R = 0.5Ds + Δd; Δd = 5~10mm, where Δd is the interference fit and Ds is the shaft diameter; The dimensions of the front baffle 401 meet the following requirements: length L = Db + 100mm, where Db is the outer diameter of the bearing, width W = 0.55~0.65Ds, and groove depth H = W + 3~8mm; Front baffle 401 manufacturing: Made of Q235B steel plate, δ=10±0.5mm, length L=360mm, which is the outer diameter of the bearing plus 100mm, width W=72mm, which is 0.6×shaft diameter, semi-circular groove R=70mm, interference 10mm, groove depth 77mm, to ensure stable engagement within a gap of <50mm; The mounting hole 403 is positioned as follows: the center of the hole is 0.1 to 0.15W from the side of the baffle, the center of the hole is 0.15 to 0.2W from the bottom of the baffle, and the hole diameter is Φ30H9 with interference fit.

[0022] Example 2 The solution in Example 1 will be further described below with reference to its specific working method. like Figures 2 to 7As shown, in a preferred embodiment, based on the above method, the buffer mechanism 5 further includes a reinforcing plate 501, which is fixedly installed on the outer wall of the front baffle 401. A sheath 502 made of cast-type ultra-thin polyurethane elastomer is fixedly installed at the front end of the reinforcing plate 501. Shielding shells 503 are evenly embedded at equal intervals at the front end of the reinforcing plate 501. A permanent magnet 504 is embedded inside the shielding shell 503. A magnetorheological elastomer 505 is inserted into the inside of the sheath 502. A rubber support sleeve 506 is fitted onto the outer wall of the magnetorheological elastomer 505 facing the sheath 502. A reinforcing rib 507 is inserted through the inside of the support sleeve 506. Vertical plates 508 are evenly embedded inside the magnetorheological elastomer 505. A horizontal plate 509 is fixedly installed on the outer wall of the vertical plate 508 in a vertical form. A rubber edge strip 510 is embedded in the front edge area of ​​the sheath 502. A wear-resistant strip 511 is laid on the sheath 502 in a whole piece corresponding to the position of the long cantilever shaft 405. A reinforcing plate 501 is fixedly mounted on the outer side of the front baffle 401. The reinforcing plate 501 is embedded with multiple sets of shielding shells 503, which can concentrate and guide the magnetic field of the permanent magnet 504, so that the magnetic field acts on the magnetorheological elastomer 505 inside the sheath 502. During operation, the magnetorheological elastomer 505 can achieve flexible buffering to prevent parts from bumping. When the axial pressure increases, the distance between it and the permanent magnet 504 decreases, and the stiffness increases simultaneously, taking into account both support strength and buffering performance. The outer side of the magnetorheological elastomer 505 is equipped with a support sleeve 506, reinforcing ribs 507, and a biting bracket composed of vertical plates 508 and horizontal plates 509, which can limit the deformation amplitude and prevent damage under pressure. The sheath 502 is equipped with thickened pressure strips 510 and wear-resistant strips 511, which effectively improve the edge wear resistance and reduce friction loss. Thus, through the use of magnetic field, the material can achieve flexible to rigid adaptive switching, with excellent support and protection performance. Combined with multiple mechanical protection structures, it can extend the service life of the parts. The overall structure is stable, wear-resistant and deformation-resistant.

[0023] like Figures 6 to 8 As shown, in a preferred embodiment, based on the above method, the warning mechanism 6 further includes an insulating film 601, which is laid on the front end of the permanent magnet 504. A piezoelectric ceramic sheet 602 is fixedly installed on the outer wall of the magnetorheological elastomer 505 facing the insulating film 601. A high-hardness engineering plastic elastic limiting strip 603 is fixedly installed on the front end of the piezoelectric ceramic sheet 602. An assembly shell 604 for assembling cables is fixedly installed on one side of the shielding shell 503 at the front end of the reinforcing plate 501. A hollow protective shell 605 protrudes from the top of the reinforcing plate 501. An embedded plate 606 is fixedly installed at one end of the protective shell 605 that penetrates into the reinforcing plate 501. A positioning hole 607 for limiting the cable is opened on the inner wall of the embedded plate 606. A warning module 608 is fixedly installed above the embedded plate 606 inside the protective shell 605. An insulating film 601 is placed between the permanent magnet 504 and the piezoelectric ceramic sheet 602 to effectively isolate the magnetic circuit and the electrical circuit, preventing mutual interference. An elastic limiting strip 603 mounted on the outside of the piezoelectric ceramic sheet 602 limits the maximum compression stroke of the magnetorheological elastomer 505, preventing damage due to overload. During operation, the magnetorheological elastomer 505 deforms under pressure, triggering the piezoelectric ceramic sheet 602 to generate an electrical signal. This signal is transmitted via cable to an alarm module integrating a passive rectifier energy storage unit and a passive piezoelectric buzzer. 608. Once the load exceeds the preset threshold, the module will immediately issue an audible and visual warning. The warning module 608 is arranged on the top of the reinforcing plate 501 and is sealed and protected by the protective shell 605 and the embedded plate 606. The positioning hole 607 on the embedded plate 606 can neatly arrange the cables. This structure not only ensures the stable operation of the magnetoelectric system, but also forms a dual safety protection with mechanical limit and overload warning, which can effectively avoid overload hazards. At the same time, the module has a high degree of integration, neat wiring, and is safe to use and easy to maintain.

[0024] In summary: This invention addresses the technical problem of difficulty in inserting into narrow, enclosed gaps less than 50mm, making it impossible to construct a stable support point; it employs the technical solutions described in the above embodiments. Furthermore, the implementation process of the above technical solutions is as follows: During the bearing removal process of this long-shaft equipment, a front baffle 401 with an interference-fit semi-circular groove 404 is fitted into the gap between the bearing inner ring 407 and the inner oil cover 406. A lead screw body 1 with an M30×3.5 threaded section 2 is used to adapt to the axial space dimension of the long cantilever shaft 405. The lead screw body 1 passes through the mounting holes 403 of the front baffle 401 and the rear baffle 402 in sequence. The mounting holes 403 adopt a Φ30 clearance fit structure, which matches the outer diameter of the threaded section 2 to achieve flexible sliding. After adjusting the position according to the actual length of the long cantilever shaft 405, it is locked and fixed by fasteners 3. The inner wall of the semi-circular groove 404 is bonded with an oil-resistant and heat-resistant rubber bushing 409 made of nitrile rubber with a thickness of 0.25mm. The applicable temperature range is -20℃ to 120℃. It is fixed by bonding with high-temperature structural adhesive throughout the entire area, which can avoid bearing collision and surface scratches caused by hard metal contact. The jacking device 408, which is composed of jacks, is set between the rear baffle 402 and the shaft end of the long cantilever shaft 405. The jacking device 408 outputs an axial force of not less than 30 tons. Relying on the front baffle 401, a stable support fulcrum is established in a narrow gap of less than 50mm to complete the bearing disassembly operation. This structure can be adapted to narrow gap installation conditions and effectively broadens the application range of the tooling. A reinforcing plate 501 is fixedly installed at the mating end of the front baffle 401 and the inner oil cap 406. Multiple sets of shielding shells 503, made of cold-rolled low-carbon magnetically conductive steel plates with a wall thickness of 0.8mm, are embedded inside the reinforcing plate 501. The magnetic focusing effect is optimized through magnetic circuit simulation. The shielding shell 503 constrains, focuses, and guides the magnetic field of the built-in high-temperature resistant neodymium iron boron permanent magnet 504, suppressing disordered magnetic field diffusion and ensuring that the magnetic force is precisely applied to the magnetorheological elastomer 505 inside the sheath 502. The magnetorheological elastomer 505 is made of silicone rubber matrix + 60% carbonyl iron powder. The formula has a normal Shore hardness of 30HA, which increases to 55HA under a 500mT magnetic field. The compression amount and stiffness change are linearly related. The magnetorheological elastomer 505 can provide elastic buffering during dismantling to prevent parts from colliding with each other. As the axial load of the jacking increases, the magnetorheological elastomer 505 is compressed and continuously approaches the permanent magnet 504. The magnetic field strength increases synchronously, and the material stiffness increases step by step, realizing the adaptive switching from flexible buffering to rigid load bearing, further enhancing the support performance and impact buffering capacity. A rubber support sleeve 506 and reinforcing ribs 507 are provided on the outer side of the magnetorheological elastomer 505 to form a basic protective structure. The interlocking bracket composed of vertical plates 508 and horizontal plates 509 provides mechanical support to the magnetorheological elastomer 505, limiting its deformation range and preventing structural damage caused by excessive compression or excessive deformation. A thickened pressure strip 510 is integrally provided at the front end of the sheath 502 to improve the wear resistance and impact resistance of the edge area. A wear-resistant strip 511 made of polytetrafluoroethylene is added to the contact surface between the sheath 502 and the long cantilever shaft 405 to reduce relative friction loss and extend the service life of the sheath 502. A 0.03mm thick polyimide insulating film 601, with a withstand voltage ≥500V and a temperature resistance of -20℃~130℃, is sandwiched between the permanent magnet 504 and the piezoelectric ceramic sheet 602. This achieves physical isolation between the magnetic circuit and the electrical structure, preventing mutual interference between the magnetic and electric fields. An elastic limiting strip 603 made of PA66+30% glass fiber reinforced high-hardness engineering plastic is fitted to the edge of the piezoelectric ceramic sheet 602, abutting against the surface of the magnetorheological elastomer 505. This limits the maximum compression stroke of the magnetorheological elastomer 505, preventing overload and material crushing failure. During bearing disassembly, the magnetorheological elastomer 505 deforms under pressure and transmits the load, driving the piezoelectric ceramic sheet 602 to undergo mechanical deformation. Based on the positive piezoelectric effect, an induced electrical signal is generated. The electrical signal is transmitted to the warning module 608 through the φ0.08mm high-temperature resistant enameled cable built into the assembly shell 604. The warning module 608 integrates a passive rectifier energy storage unit and an ultra-thin passive piezoelectric buzzer, among other functional components. The entire module is assembled in a sealed cavity formed by the protective shell 605 and the embedded plate 606, and is arranged on the top of the reinforcing plate 501. The embedded plate 606 has positioning holes 607 for cable organization and classification. When the electrical signal output by the piezoelectric ceramic plate 602 exceeds the preset voltage threshold, the warning module 608 automatically triggers an audible and visual alarm, realizing passive online early warning of overload, off-center load, and overload conditions.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bearing removal tool for long-shaft equipment, characterized in that, The screw body (1) is integrally formed with a threaded section (2) on its exterior. Two fasteners (3) are slidably connected to the outside of the threaded section (2). A dismantling mechanism (4) for disassembling and assembling the bearing is provided on one side of the fastener (3). A buffer mechanism (5) for avoiding collisions during the dismantling process is provided on one side of the dismantling mechanism (4). A warning mechanism (6) for overpressure warning is provided above the buffer mechanism (5).

2. The bearing removal tool for long-shaft equipment according to claim 1, characterized in that, The dismantling mechanism (4) includes a front baffle (401), which is sleeved on one side of the fastener (3) outside the threaded section (2), and a rear baffle (402) is sleeved on one side of another fastener (3) outside the threaded section (2). The front baffle (401) and the rear baffle (402) are provided with mounting holes (403) at the positions corresponding to the threaded section (2).

3. The bearing removal tool for long-shaft equipment according to claim 2, characterized in that, The front baffle (401) has a semi-circular groove (404) inside, and a long cantilever shaft (405) extends through the semi-circular groove (404). An inner oil cap (406) is fitted on one side of the front baffle (401) outside the long cantilever shaft (405), and a bearing inner ring (407) is fitted on the other side of the front baffle (401) outside the long cantilever shaft (405). A pushing device (408) is embedded in the outer wall of the rear baffle (402) facing the long cantilever shaft (405), and a rubber bushing (409) is embedded in the side of the semi-circular groove (404) facing the long cantilever shaft (405).

4. The bearing removal tool for long-shaft equipment according to claim 1, characterized in that, The buffer mechanism (5) includes a reinforcing plate (501), which is fixedly installed on the outer wall of the front baffle (401). A sheath (502) of cast-type ultra-thin polyurethane elastomer material is fixedly installed at the front end of the reinforcing plate (501). A shielding shell (503) is uniformly embedded at equal intervals at the front end of the reinforcing plate (501). A permanent magnet (504) is embedded inside the shielding shell (503). A magnetorheological elastomer (505) is inserted inside the sheath (502).

5. A bearing removal tool for long-shaft equipment according to claim 4, characterized in that, The magnetorheological elastomer (505) is fitted with a rubber support sleeve (506) on the outer wall of the sheath (502), and a reinforcing rib (507) is inserted through the inside of the support sleeve (506).

6. The bearing removal tool for long-shaft equipment according to claim 5, characterized in that, The magnetorheological elastomer (505) has vertical plates (508) uniformly embedded at equal intervals inside, and the outer wall of the vertical plates (508) is fixedly installed with horizontal plates (509) in a vertical form.

7. A bearing removal tool for long-shaft equipment according to claim 4, characterized in that, The front edge area of ​​the sheath (502) is fitted with a rubber edge strip (510), and the sheath (502) is covered with a wear-resistant strip (511) at the position corresponding to the long cantilever shaft (405).

8. A bearing removal tool for long-shaft equipment according to claim 1, characterized in that, The warning mechanism (6) includes an insulating film (601), which is laid on the front end of the permanent magnet (504) in one piece. A piezoelectric ceramic sheet (602) is fixedly installed on the outer wall of the magnetorheological elastomer (505) facing the insulating film (601). A high-hardness engineering plastic elastic limiting strip (603) is fixedly installed on the front end of the piezoelectric ceramic sheet (602).

9. A bearing removal tool for long-shaft equipment according to claim 4, characterized in that, An assembly shell (604) for assembling cables is fixedly installed on one side of the front shield shell (503) of the reinforcing plate (501), and a hollow protective shell (605) protrudes from the top of the reinforcing plate (501). An embedded plate (606) is fixedly installed at one end of the protective shell (605) that penetrates into the reinforcing plate (501), and a positioning hole (607) for limiting the cable is opened on the inner wall of the embedded plate (606). A warning module (608) is fixedly installed above the embedded plate (606) inside the protective shell (605).

10. A method for removing bearings from long-shaft equipment, characterized in that, S1. Select a front baffle (401) of the corresponding size of the semicircular groove (404) according to the shaft diameter, and ensure that the semicircular groove (404) is interference-fitted into the gap between the inner oil cover (406) and the inner ring (407) of the bearing; S2. Assemble the lead screw body (1) and adjust the front baffle (401) and rear baffle (402) through the threaded section (2) and fastener (3) to match the length of the long cantilever shaft (405) so that the front baffle (401) fits the inner oil cover (406). S3. Place a jacking device (408) between the rear baffle (402) and the end face of the long cantilever shaft (405), and apply pressure in stages until the bearing comes out, thereby achieving dismantling.

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