Dismounting method for various bearing sealing covers

Abstract

The invention discloses a disassembling method for various bearing sealing covers. A sealing cover disassembling tool comprising a main body plate, a cover pulling hook, a supporting seat and a connecting rod is adopted. Firstly, a rectangular notch in the bottom of a supporting seat of the sealing cover disassembling tool is clamped on the end face of a bearing outer ring, and a hook tip of a cover pulling hook extends into the bottom of an inner side connecting sleeve of a sealing cover; then a connecting rod of the sealing cover disassembling tool is pressed downwards, the main plate body rotates around a pin shaft of a supporting seat, the front end of the main plate body is lifted, and then a hook tip of a cover pulling hook pulls out a part of an outer ring connecting sleeve of the sealing cover from a tooth groove of a bearing outer ring; and then the sealing cover dismounting tool is moved on the end face of the bearing outer ring by an angle until the outer ring connecting sleeve of the sealing cover is completely pulled out of the tooth groove of the bearing outer ring. According to the bearing sealing cover dismounting device, various types of bearing sealing covers can be simply and conveniently dismounted.

Description

Technical Field

[0001] This invention relates to a method for disassembling various bearing seal covers. Background Technology

[0002] There are generally two types of seals used for rail transit axle box bearings. One type is a combined oil seal, made of a combination of steel plate and rubber. After press-fitting, its structure is generally higher than the end face of the outer ring of the bearing. This type is typically used for integral double-row roller bearings and can be disassembled using automated equipment. The bearing is fixed by clamping the end faces of the two inner rings with fixtures, then the portion of the oil seal above the outer ring is held in place by jaws, and finally the oil seal is pulled out mechanically. The other type of seal for rail transit axle box bearings is a metal sealing cover, made of steel plate. Its structure is simpler, and after press-fitting, its overall height is slightly lower than the end face of the outer ring of the bearing. This type of seal is generally used for split axle box bearings. Disassembly typically involves first removing the rollers, and then tapping the sealing cover upwards from the bottom of the outer ring.

[0003] However, some double-row cylindrical roller bearings use a sealed cover type seal. The inner ring of this type of bearing is a single integral structure, and because the sealed cover lacks an end face structure higher than the outer ring for automated equipment to grip, and another type of bearing housing also lacks separate rollers that can be preferentially disassembled, the above-mentioned conventional disassembly methods are not applicable. Therefore, it is necessary to design a tooling for disassembling the sealed cover of this type of bearing. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for disassembling various types of bearing seals, which can easily and conveniently disassemble various types of bearing seals.

[0005] The objective of this invention is achieved as follows: a method for disassembling multiple types of bearing seal covers, employing a seal cover disassembly fixture for removing a first type of seal cover with an inverted U-shaped cross-section from a first type of double-row cylindrical roller bearing with a single inner ring, or for removing a second type of seal cover with an inverted L-shaped cross-section from a second type of double-row cylindrical roller bearing with two inner rings; the first type of seal cover includes an inner connecting sleeve, a retaining ring connected to the front end of the inner connecting sleeve, and an outer connecting sleeve connected to the outer end of the retaining ring and located around the inner connecting sleeve; the inner diameter of the inner connecting sleeve is adapted to the outer diameter of the retaining edge of the inner ring of the first type of double-row cylindrical roller bearing, or the inner diameter of the inner connecting sleeve is adapted to the outer diameter of the flat retaining ring provided on the unretained end face of the inner ring of the first type of double-row cylindrical roller bearing; the front end face of the retaining ring is adapted to the outer diameter of the first type of double-row cylindrical roller bearing. The inner and outer rings of the bearing have flat end faces; the rear end of the outer peripheral surface of the outer connecting sleeve is provided with an outer diameter protrusion that is interference-fitted with the tooth groove on the inner peripheral surface of the outer ring of the first type of double-row cylindrical roller bearing, so that the outer connecting sleeve is inserted into the tooth groove of the outer ring of the first type of double-row cylindrical roller bearing through the outer diameter protrusion; the second type of sealing cover includes a radial ring plate and an axial connecting sleeve connected to the outer end of the radial ring plate; the end face of the radial ring plate is flat with the end face of the outer ring of the second type of double-row cylindrical roller bearing and higher than the end face of the inner ring of the second type of double-row cylindrical roller bearing; the rear end of the outer peripheral surface of the axial connecting sleeve is provided with an outer diameter protrusion that is interference-fitted with the tooth groove on the inner peripheral surface of the outer ring of the second type of double-row cylindrical roller bearing, so that the axial connecting sleeve is inserted into the tooth groove of the outer ring of the second type of double-row cylindrical roller bearing through the outer diameter protrusion; The sealing cover disassembly fixture includes a main plate, a cover removal hook, a support base, and a connecting rod; wherein... The main board includes a front inclined plate that is lower in the front and higher in the rear, and a rear rectangular plate integrally connected to the rear end of the front inclined plate; the front inclined plate of the main board has a sloping waist-shaped hole with a slope that matches the slope of the front inclined plate and is also lower in the front and higher in the rear; the rear rectangular plate of the main board has a mounting hole at the rear. The cover-pulling hook includes a hook body and a fork-shaped connector connected to the top of the hook body; the bottom of the hook body extends rearward to form a hook tip, the length of which is one-third to two-thirds of the width of the radial annular plate of the second type of sealing cover; the fork-shaped connector has a connection hole adapted to the oblique waist-shaped hole on the main body plate, so that the cover-pulling hook can connect the fork-shaped connector to the front end of the oblique waist-shaped hole on the main body plate by means of a first bolt fastener; The support base includes a fulcrum seat and a fork-shaped joint connected to the top of the fulcrum seat; a rectangular notch with a length adapted to the width of the end face of the outer ring of the bearing is opened at the front of the bottom face of the fulcrum seat; a pin hole adapted to the oblique waist-shaped hole on the main body plate is opened on the fork-shaped joint, so that the support base can hinge the fork-shaped joint to the rear end of the oblique waist-shaped hole on the main body plate through the pin. The connecting rod includes a fork-shaped connector at the front end, a main rod body connected to the rear end of the fork-shaped connector, and a threaded rod connected to the rear end of the main rod body; the fork-shaped connector has a connecting hole that matches the mounting hole on the main board body, so that the connecting rod can be connected to the fork-shaped connector in the mounting hole of the main board body by a second bolt fastener; The method for disassembling the sealing cover of the present invention includes a first method for disassembling the sealing cover and a second method for disassembling the sealing cover; The disassembly method for the first type of sealing cover is performed according to the following steps: S11. Remove the inner ring and the retaining ring of the first type of double-row cylindrical roller bearing; S12. Adjust the distance between the cover-pulling hook and the support seat in the cover-removal tool according to the difference between the outer diameter of the first type of double-row cylindrical roller bearing and the inner diameter of the inner connecting sleeve of the first type of cover. That is, first loosen the nut of the first bolt fastener, so that the cover-pulling hook rotates around the bolt of the first bolt fastener, or move the bolt of the first bolt fastener along the oblique waist-shaped hole of the main body until the distance between the hook tip of the cover-pulling hook and the support seat meets the requirements, and then tighten the nut of the first bolt fastener. S13. The rectangular notch at the bottom of the support seat of the sealing cover removal tool is placed on the end face of the outer ring of the first type of double row cylindrical roller bearing, and the hook tip of the cover removal hook is inserted into the bottom of the inner connecting sleeve of the first type of sealing cover. S14. Press down the connecting rod of the sealing cover disassembly tool to make the main board rotate around the pin of the support seat, so that the front end of the main board is raised, and then the hook tip of the cover removal hook pulls a part of the outer ring connecting sleeve of the first type of sealing cover out of the tooth groove of the outer ring of the first type of double row cylindrical roller bearing. S15. First, move the sealing cover disassembly tool to an angle on the end face of the outer ring of the first type of double row cylindrical roller bearing, and then repeat step S14 until the outer ring connecting sleeve of the first type of sealing cover is completely pulled out from the tooth groove of the outer ring of the first type of double row cylindrical roller bearing. The second type of sealing cover is disassembled according to the following steps: S21. Remove the support base of the sealing cover disassembly tool from the main board body; S22. The hook body of the cover removal tool is seated on the end face of the inner ring of the second type of double row cylindrical roller bearing, and the hook tip of the cover removal tool is fully inserted into the bottom of the radial ring plate of the second type of cover. S23. Lift the rear end of the connecting rod of the sealing cover disassembly tool upward, so that the hook tip of the cover removal hook pulls a part of the axial connecting sleeve of the second type of sealing cover out of the tooth groove of the outer ring of the second type of double row cylindrical roller bearing. S24. First, move the sealing cover disassembly tool to an angle on the end face of the inner ring of the second type of double-row cylindrical roller bearing, and then repeat step S23 until the axial connecting sleeve of the second type of sealing cover is completely pulled out from the tooth groove of the outer ring of the second type of double-row cylindrical roller bearing.

[0006] The above-mentioned methods for disassembling cylindrical roller bearing seal covers include a seal cover disassembly fixture that further includes an extension rod. The front end face of the extension rod has a threaded blind hole that matches the threaded rod of the connecting rod, so that the extension rod is connected to the threaded rod of the connecting rod through the threaded blind hole.

[0007] The disassembly methods for various bearing seal covers of the present invention have the following characteristics: 1. The sealing cover disassembly fixture used in this invention can be used to disassemble sealing covers of various sizes by adjusting the distance between the cover-pulling hook and the support seat and the angle of the cover-pulling hook; the cover-pulling hook can be rotated to adjust its position before being fixed with the first bolt fastener, thereby adapting to bearings of different sizes. 2. The sealing cover disassembly tooling used in this invention can remove the support base, thus allowing for the disassembly of the sealing cover of another type of bearing, making it more adaptable.

[0008] 3. The sealing cover disassembly fixture used in this invention has a simple component structure and is easy to assemble. It can be matched with more types of bearings by replacing parts of different sizes.

[0009] 4. This invention is easy to operate. The extended rod of the tooling is disassembled using the sealing cover, which saves time and effort. Attached Figure Description

[0010] Figure 1 This is an axial cross-sectional view of the first type of double-row cylindrical roller bearing; Figure 2 This is an axial cross-sectional view of the second type of double-row cylindrical roller bearing; Figure 3 This is a front view of the structure of the sealing cover disassembly fixture used in this invention; Figure 4 This is a front view of the main body of the sealing cover disassembly tool of the present invention; Figure 5 This is a front view of the cover removal hook in the cover removal tool of the present invention; Figure 5a yes Figure 5 Side view; Figure 6 This is a front view of the connecting rod in the sealing cover disassembly fixture of the present invention; Figure 6a yes Figure 6 Side view; Figure 7 This is a front view of the connecting rod in the sealing cover disassembly tooling of the present invention; Figure 7a yes Figure 7 Top view; Figure 8 This is a structural schematic diagram of the first method for disassembling the sealing cover according to the present invention; Figure 9 This is a structural schematic diagram of the second method for disassembling the sealing cover according to the present invention. Detailed Implementation

[0011] The invention will now be further described with reference to the accompanying drawings.

[0012] The present invention provides a method for disassembling various bearing seal covers, employing a seal cover disassembly fixture for removing a first type of seal cover with an inverted U-shaped cross-section from a first type of double-row cylindrical roller bearing with a single inner ring, or for removing a second type of seal cover with an inverted L-shaped cross-section from a second type of double-row cylindrical roller bearing with a double inner ring.

[0013] The first type of double-row cylindrical roller bearing (see...) Figure 1 The first type of sealing cover 3 includes an inner connecting sleeve 31, a retaining ring 32 connected to the front end of the inner connecting sleeve 31, and an outer connecting sleeve 33 connected to the outer end of the retaining ring 32 and located around the inner connecting sleeve 31; the inner diameter of the inner connecting sleeve 31 is adapted to the outer diameter of the flange of the inner ring 11 of the first type of double-row cylindrical roller bearing, or the inner diameter of the inner connecting sleeve 31 is adapted to the outer diameter of the flat retaining ring 2 provided on the flangeless end face of the inner ring 11 of the first type of double-row cylindrical roller bearing; the front end face of the retaining ring 32 is... The end face of the inner ring 11 and the end face of the outer ring 12 of the first type of double-row cylindrical roller bearing are flush; the rear end of the outer peripheral surface of the outer connecting sleeve 33 is provided with an outer diameter protrusion 330 that is interference-fitted with the tooth groove 110 on the inner peripheral surface of the outer ring 11 of the first type of double-row cylindrical roller bearing, so that the outer connecting sleeve 33 is inserted into the tooth groove 120 of the outer ring 12 of the first type of double-row cylindrical roller bearing through the outer diameter protrusion 330; the first type of double-row cylindrical roller bearing also includes cylindrical rollers 13, cages 14 and spacers 15.

[0014] The second type is the double-row tapered roller bearing (see...). Figure 2The second type of sealing cover 4 includes a radial ring plate 41 and an axial connecting sleeve 42 connected to the outer end of the radial ring plate 41. The end face of the radial ring plate 41 is flush with the end face of the outer ring 22 of the second type of double-row cylindrical roller bearing and higher than the end face of the inner ring 21 of the second type of double-row cylindrical roller bearing. The rear end of the outer peripheral surface of the axial connecting sleeve 42 is provided with an outer diameter protrusion 420 that is interference-fitted with the groove 220 on the inner peripheral surface of the outer ring 22 of the second type of double-row cylindrical roller bearing, so that the axial connecting sleeve 42 is inserted into the groove 220 of the outer ring 22 of the second type of double-row cylindrical roller bearing through the outer diameter protrusion 420. The second type of double-row cylindrical roller bearing also includes tapered rollers 23, a cage 24, and a spacer 25. The radial ring plate 41 of the second type of sealing cover 4 is sleeved on the sealing seat 26 located on one end face of the inner ring 21 or on the back stop 27 located on the other end face of the inner ring 21.

[0015] The present invention provides various methods for disassembling bearing seal covers, employing seal cover disassembly fixtures (see...). Figure 3 It includes a main body plate 51, a cover hook 52, a support base 53, a connecting rod 54, and an extension rod 55; among which, The main board body 51 includes a front inclined plate 511 that is lower at the front and higher at the rear, and a rear rectangular plate 512 integrally connected to the rear end of the front inclined plate 511; the front inclined plate 511 of the main board body 51 has a sloping, waist-shaped hole 513 with a slope that matches the slope of the front inclined plate 511 and is also lower at the front and higher at the rear; the rear rectangular plate 512 of the main board body 51 has a mounting hole 514 at its rear (see... Figure 4 ); The cover-pulling hook 52 includes a hook body 521 and a fork-shaped connector 50 connected to the top of the hook body 521; the bottom of the hook body 521 extends rearward to form a hook tip 520, the length L of which is one-third to two-thirds of the width of the radial annular plate 41 of the second type of sealing cover 4; the fork-shaped connector 50 has a connecting hole 500 adapted to the oblique oblong hole 513 on the main body plate 51, so that the cover-pulling hook 52 connects the fork-shaped connector 50 to the front end of the oblique oblong hole 513 on the main body plate 51 by the first bolt fastener 522 (see Figure 5 and Figure 5a ); Support 53 includes a pivot 531 and a fork-shaped connector 50 connected to the top of the pivot 531; a rectangular notch 530 with a length adapted to the end face width of the outer ring 12 of the first type of double-row cylindrical roller bearing is provided on the front of the bottom face of the pivot 531; a pin hole 501 adapted to the oblique oblong hole 513 on the main body plate 51 is provided on the fork-shaped connector 50, so that the support 53 hinges the fork-shaped connector 50 to the rear end of the oblique oblong hole 513 on the main body plate 51 via a pin 532 (see Figure 6 and Figure 6a ); The connecting rod 54 includes a fork-shaped connector 50 at the front end, a main rod body 541 connected to the rear end of the fork-shaped connector 50, and a threaded rod 542 connected to the rear end of the main rod body 541; the fork-shaped connector 50 has a connecting hole 500 that matches the mounting hole 514 on the main plate body 51, so that the connecting rod 54 connects the fork-shaped connector 50 to the mounting hole 514 on the main plate body 51 through the second bolt fastener 543 (see...). Figure 7 and Figure 7a ); An extended rod 55 has a threaded blind hole on its front end face that matches the threaded rod 542 of the connecting rod 54, allowing the extended rod 55 to be connected to the threaded rod 542 of the connecting rod 54 through the threaded blind hole. After installation, the extended rod 55 can extend the lever arm and save effort during use.

[0016] The present invention provides various methods for disassembling bearing seal covers, including a first method for disassembling a seal cover and a second method for disassembling a seal cover; The first method for disassembling the sealing cover is as follows: S11. Take out the inner ring 11 and the retaining ring 2 of the first type of double row cylindrical roller bearing; S12. Adjust the distance between the cover removal hook 52 and the support seat 53 in the cover removal tooling according to the difference between the outer diameter of the first type of double-row cylindrical roller bearing and the inner diameter of the inner connecting sleeve 31 of the first type of cover 3. That is, first loosen the nut of the first bolt fastener 523, so that the cover removal hook 52 rotates around the bolt of the first bolt fastener 523, or move the bolt of the first bolt fastener 523 along the oblique waist-shaped hole 513 of the main body 51 until the distance between the hook tip 520 of the cover removal hook 52 and the support seat 53 meets the requirements, and then tighten the nut of the first bolt fastener 523. S13. The rectangular notch 530 at the bottom of the support seat 53 of the sealing cover removal tool is seated on the end face of the outer ring 12 of the first type of double row cylindrical roller bearing, which serves as a fulcrum, and the hook tip 520 of the cover removal hook 52 is inserted into the bottom of the inner connecting sleeve 31 of the first type of sealing cover 3. S14. Press down the extension rod 55 of the sealing cover disassembly tool, and use the lever principle to make the main body 51 rotate around the pin 532 of the support seat 53, so that the front end of the main body 51 is raised, and then the hook tip 520 of the cover removal hook 52 pulls a part of the first type of sealing cover 3 out of the tooth groove 120 of the outer ring 12 of the first type of double row cylindrical roller bearing. S15. First, move the sealing cover disassembly tool an angle on the end face of the outer ring 12 of the first type of double-row cylindrical roller bearing, then repeat step S14 until the first type of sealing cover 3 is completely pulled out from the groove 120 of the outer ring 12 of the first type of double-row cylindrical roller bearing (see...). Figure 8 ).

[0017] The second method for disassembling the sealing cover is as follows: S21. Remove the support base 53 of the sealing cover disassembly tool from the main body 51; S22. The hook body 521 of the cover removal hook 52 of the cover removal tool is placed on the end face of the inner ring 21 of the second type of double row cylindrical roller bearing, and the hook tip 520 of the cover removal hook 52 is fully inserted into the bottom of the radial ring plate 41 of the second type of cover 4. S23. Lift the rear end of the extension rod 55 of the sealing cover disassembly tool upward, and use the bottom surface of the hook body 521 of the cover removal hook 52 as the rotation fulcrum, so that the hook tip 520 of the cover removal hook 52 pulls a part of the axial connecting sleeve 42 of the second type of sealing cover 4 out from the tooth groove 220 of the outer ring 22 of the second type of shaft double row cylindrical roller bearing. S24. First, move the sealing cover disassembly tool an angle on the end face of the inner ring 21 of the second type of double-row cylindrical roller bearing, then repeat step S23 until the axial connecting sleeve 42 of the second type of sealing cover 4 is completely pulled out from the groove 220 of the outer ring 22 of the second type of double-row cylindrical roller bearing (see...). Figure 9 ).

[0018] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of the invention and should be defined by the claims.

Claims

1. A method for disassembling multiple bearing seal covers, employing a seal cover disassembly fixture for removing a first type of seal cover with an inverted U-shaped cross-section from a first type of double-row cylindrical roller bearing with a single inner ring, or for removing a second type of seal cover with an inverted L-shaped cross-section from a second type of double-row cylindrical roller bearing with two inner rings; the first type of seal cover includes an inner connecting sleeve, a retaining ring connected to the front end of the inner connecting sleeve, and an outer connecting sleeve connected to the outer end of the retaining ring and located around the periphery of the inner connecting sleeve; the inner diameter of the inner connecting sleeve is adapted to the outer diameter of the retaining edge of the inner ring of the first type of double-row cylindrical roller bearing, or the inner diameter of the inner connecting sleeve is adapted to the outer diameter of the flat retaining ring provided on the unretained end face of the inner ring of the first type of double-row cylindrical roller bearing; the front end face of the retaining ring is adapted to the outer diameter of the inner ring of the first type of double-row cylindrical roller bearing, The outer ring's end face is flat; the rear end of the outer peripheral surface of the outer connecting sleeve is provided with an outer diameter protrusion that is interference-fitted with the tooth groove on the inner peripheral surface of the outer ring of the first type of double-row cylindrical roller bearing, so that the outer connecting sleeve is inserted into the tooth groove of the outer ring of the first type of double-row cylindrical roller bearing through the outer diameter protrusion; the second type of sealing cover includes a radial ring plate and an axial connecting sleeve connected to the outer end of the radial ring plate; the end face of the radial ring plate is flat with the end face of the outer ring of the second type of double-row cylindrical roller bearing and higher than the end face of the inner ring of the second type of double-row cylindrical roller bearing; the rear end of the outer peripheral surface of the axial connecting sleeve is provided with an outer diameter protrusion that is interference-fitted with the tooth groove on the inner peripheral surface of the outer ring of the second type of double-row cylindrical roller bearing, so that the axial connecting sleeve is inserted into the tooth groove of the outer ring of the second type of double-row cylindrical roller bearing through the outer diameter protrusion; The sealing cover disassembly fixture includes a main plate, a cover removal hook, a support base, and a connecting rod; characterized in that... The main board includes a front inclined plate that is lower in the front and higher in the rear, and a rear rectangular plate integrally connected to the rear end of the front inclined plate; the front inclined plate of the main board has a sloping waist-shaped hole with a slope that matches the slope of the front inclined plate and is also lower in the front and higher in the rear; the rear rectangular plate of the main board has a mounting hole at the rear. The cover-pulling hook includes a hook body and a fork-shaped connector connected to the top of the hook body; the bottom of the hook body extends rearward to form a hook tip, the length of which is one-third to two-thirds of the width of the radial annular plate of the second type of sealing cover; the fork-shaped connector has a connection hole adapted to the oblique waist-shaped hole on the main body plate, so that the cover-pulling hook can connect the fork-shaped connector to the front end of the oblique waist-shaped hole on the main body plate by means of a first bolt fastener; The support base includes a fulcrum seat and a fork-shaped joint connected to the top of the fulcrum seat; a rectangular notch with a length adapted to the width of the end face of the outer ring of the bearing is opened at the front of the bottom face of the fulcrum seat; a pin hole adapted to the oblique waist-shaped hole on the main body plate is opened on the fork-shaped joint, so that the support base can hinge the fork-shaped joint to the rear end of the oblique waist-shaped hole on the main body plate through the pin. The connecting rod includes a fork-shaped connector at the front end, a main rod body connected to the rear end of the fork-shaped connector, and a threaded rod connected to the rear end of the main rod body; the fork-shaped connector has a connecting hole that matches the mounting hole on the main board body, so that the connecting rod can be connected to the fork-shaped connector in the mounting hole of the main board body by a second bolt fastener; The method for disassembling the sealing cover includes a first method for disassembling the sealing cover and a second method for disassembling the sealing cover. The disassembly method for the first type of sealing cover is performed according to the following steps: S11. Remove the inner ring and the retaining ring of the first type of double-row cylindrical roller bearing; S12. Adjust the distance between the cover-pulling hook and the support seat in the cover-removal tool according to the difference between the outer diameter of the first type of double-row cylindrical roller bearing and the inner diameter of the inner connecting sleeve of the first type of cover. That is, first loosen the nut of the first bolt fastener, so that the cover-pulling hook rotates around the bolt of the first bolt fastener, or move the bolt of the first bolt fastener along the oblique waist-shaped hole of the main body until the distance between the hook tip of the cover-pulling hook and the support seat meets the requirements, and then tighten the nut of the first bolt fastener. S13. The rectangular notch at the bottom of the support seat of the sealing cover removal tool is placed on the end face of the outer ring of the first type of double row cylindrical roller bearing, and the hook tip of the cover removal hook is inserted into the bottom of the inner connecting sleeve of the first type of sealing cover. S14. Press down the connecting rod of the sealing cover disassembly tool to make the main board rotate around the pin of the support seat, so that the front end of the main board is raised, and then the hook tip of the cover removal hook pulls a part of the outer ring connecting sleeve of the first type of sealing cover out of the tooth groove of the outer ring of the first type of double row cylindrical roller bearing. S15. First, move the sealing cover disassembly tool to an angle on the end face of the outer ring of the first type of double row cylindrical roller bearing, and then repeat step S14 until the outer ring connecting sleeve of the first type of sealing cover is completely pulled out from the tooth groove of the outer ring of the first type of double row cylindrical roller bearing. The second type of sealing cover is disassembled according to the following steps: S21. Remove the support base of the sealing cover disassembly tool from the main board body; S22. The hook body of the cover removal tool is seated on the end face of the inner ring of the second type of double row cylindrical roller bearing, and the hook tip of the cover removal tool is fully inserted into the bottom of the radial ring plate of the second type of cover. S23. Lift the rear end of the connecting rod of the sealing cover disassembly tool upward, so that the hook tip of the cover removal hook pulls a part of the axial connecting sleeve of the second type of sealing cover out of the tooth groove of the outer ring of the second type of double row cylindrical roller bearing. S24. First, move the sealing cover disassembly tool to an angle on the end face of the inner ring of the second type of double-row cylindrical roller bearing, and then repeat step S23 until the axial connecting sleeve of the second type of sealing cover is completely pulled out from the tooth groove of the outer ring of the second type of double-row cylindrical roller bearing.

2. The method for disassembling various cylindrical roller bearing seal covers according to claim 1, characterized in that, The sealing cover disassembly tool also includes an extension rod, on the front end face of which is a threaded blind hole that matches the threaded rod of the connecting rod, so that the extension rod is connected to the threaded rod of the connecting rod through the threaded blind hole.

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