Disassembling and assembling tool convenient for disassembling bearing fastening sleeve

Abstract

The invention relates to the technical field of bearing fastening sleeves, and discloses a dismounting tool convenient for dismounting a bearing fastening sleeve, the dismounting tool comprises a bearing seat, a bearing body, an inner sleeve, an outer taper sleeve, a locking washer and a rotating shaft, and also comprises a dismounting rack, and the surface of the dismounting rack is provided with a driving motor; the dismounting assembly is arranged on the surface of the outer taper sleeve, the driving motor is connected with the dismounting assembly through a universal structure, the dismounting assembly comprises a fixing ring, the surface of the fixing ring is fixedly connected with a sleeve matched with the inner sleeve, a plurality of telescopic rods are arranged on the surface of the fixing ring in a sliding mode, and one end of each telescopic rod is fixedly connected with a push block; and the correcting assembly is arranged on the surface of the telescopic rod and used for correcting the inclined inner sleeve. By adopting the technical means of a universal structure, the universal rotation angle of the inclined fastening sleeve is adjusted along with the inclination direction of the fastening sleeve, and the problems that in the existing disassembling process, an outer taper sleeve is prone to being clamped, a thread slips, and even a bearing is damaged are solved.

Description

Technical Field

[0001] This invention relates to the field of bearing fastening sleeve technology, specifically to a disassembly and assembly tool for facilitating the disassembly of bearing fastening sleeves. Background Technology

[0002] Bearings, as the core components that enable rotational motion in mechanical equipment, are widely used in machine tools, motors, construction machinery and other fields. Their stable operation directly affects the overall performance of the equipment. To achieve a reliable connection between the bearing and the shaft, a fastening sleeve is usually used as the connection medium. The fastening sleeve fixes the inner ring of the bearing to the shaft through interference fit or threaded connection. It can transmit torque and bear axial load, and is a key component to ensure the assembly accuracy and working stability of the bearing.

[0003] like Figure 1 As shown, the fastening sleeve assembly in the prior art includes a bearing body, an inner sleeve, an outer tapered sleeve, and a locking washer. The inner sleeve is a non-closed ring with grooves on its surface. By tightening the outer tapered sleeve onto the surface of the inner sleeve, the tapered inner wall of the outer tapered sleeve will squeeze the inner sleeve during the tightening process, bringing its two ends closer together and clamping the shaft. The locking washer, in conjunction with friction, fixes the shaft, thus achieving fixation. This is the prior art, and will not be elaborated further.

[0004] During equipment maintenance or component replacement, the bearing retaining sleeve needs to be disassembled. However, due to factors such as vibration, load impact or assembly errors during long-term operation, the retaining sleeve and the bearing inner ring often become misaligned, resulting in uneven force on the contact surface and local jamming. Traditional disassembly tools such as pullers and pry bars are mostly suitable for disassembling the retaining sleeve when it is in a misaligned state. Not only is it difficult to apply a uniform disassembly force, which can easily cause damage to the bearing inner ring or journal, but the unbalanced force may also make the disassembly process time-consuming and laborious, making it difficult to complete the disassembly work efficiently. Summary of the Invention

[0005] The purpose of this invention is to provide a disassembly and assembly tool that facilitates the removal of bearing fastening sleeves, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a disassembly and assembly tool for easy disassembly of bearing fastening sleeves, comprising a bearing housing, a bearing body, an inner sleeve, an outer tapered sleeve, a locking washer, and a rotating shaft, and further comprising a disassembly and assembly frame, wherein a drive motor is provided on the surface of the disassembly and assembly frame; A disassembly assembly is disposed on the surface of the outer conical sleeve. The drive motor is connected to the disassembly assembly via a universal joint. The disassembly assembly includes a fixing ring. A sleeve adapted to the inner sleeve is fixedly connected to the surface of the fixing ring. Several telescopic rods slide on the surface of the fixing ring. A push block is fixedly connected to one end of each telescopic rod. A correction component is disposed on the surface of the telescopic rod for correcting the misalignment of the inner sleeve.

[0007] Preferably, the universal structure includes a universal joint A fixedly connected to the output end of the drive motor, a universal joint B movably connected to the surface of the universal joint A, and the universal joint B fixedly connected to the fixed ring.

[0008] Preferably, a connector is fixedly connected to the end of the drive motor away from the universal joint A, and the connector is movably connected to the disassembly frame.

[0009] Preferably, the correction assembly includes a correction ring fixedly connected to the surface of the telescopic rod, the surface of the correction ring is provided with a plurality of hydraulic cylinders adapted to the telescopic rod, and the surface of the correction ring is fixedly connected with a plurality of hydraulic ports adapted to the hydraulic cylinders.

[0010] Preferably, a plurality of strain gauges are provided inside the correction ring, and a hydraulic valve is provided inside the hydraulic port, with the strain gauges electrically connected to the hydraulic valve.

[0011] Preferably, the surface of the assembly / disassembly frame is threaded with a locking bolt adapted to the connector.

[0012] Preferably, the assembly / disassembly frame has a slider adapted to the drive motor that is slidably connected inside.

[0013] Preferably, the push block surface is fixedly connected with a locking block adapted to the locking washer.

[0014] Preferably, both the inner wall of the sleeve and the outer wall of the inner sleeve are provided with interlocking toothed grooves.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a universal structure to adjust the angle of universal rotation according to the direction of the misalignment of the fastening sleeve, thereby facilitating the smooth unscrewing of the outer cone sleeve and the locking washer. This avoids problems such as jamming of the outer cone sleeve, stripping of threads, or even damage to the bearing that are easily caused by existing disassembly processes.

[0016] This invention employs a corrective ring in conjunction with strain gauges. When the fastening sleeve is misaligned, several push blocks pressing against the bearing seat surface cause the extension length of the telescopic rod to vary, thus causing the corrective ring to deform. The strain gauges promptly detect the deformation and, in conjunction with the different output amounts of the different telescopic rods, first correct the fastening sleeve, and then hydraulically push it out to smoothly disengage it from the bearing. This effectively avoids the problem of forcibly prying out the fastening sleeve, which could damage the bearing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the bearing fastening sleeve structure in the prior art. Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3This is a schematic diagram illustrating the other side of the overall structure of the present invention; Figure 4 This is a schematic diagram illustrating the state after the outer cone sleeve and locking washer have been removed, as per the present invention. Figure 5 This is a schematic diagram illustrating the connection state between the drive motor and the mounting bracket. Figure 6 This is a cross-sectional view used to illustrate the disassembly of the outer cone sleeve in this invention; Figure 7 This is a cross-sectional view used to illustrate the disassembly of the inner sleeve according to the present invention.

[0018] In the diagram: 1. Bearing housing; 11. Bearing body; 12. Inner sleeve; 13. Outer tapered sleeve; 14. Locking washer; 15. Shaft; 2. Assembly / disassembly frame; 21. Drive motor; 211. Connecting component; 22. Universal joint A; 221. Universal joint B; 23. Retaining ring; 231. Sleeve; 232. Telescopic rod; 233. Push block; 234. Locking block; 235. Straightening ring; 236. Hydraulic port; 24. Slider; 25. Locking bolt. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention discloses a disassembly and assembly tool for easily removing bearing fastening sleeves, such as... Figure 1-7As shown, the assembly includes a bearing housing 1, a bearing body 11, an inner sleeve 12, an outer tapered sleeve 13, a locking washer 14, and a rotating shaft 15. During installation, the inner sleeve 12 is fitted onto the surface of the rotating shaft 15 and passes through the bearing housing 1. The outer tapered sleeve 13 and the locking washer 14 are then fitted onto the surface of the inner sleeve 12 and tightened, thus securing the rotating shaft 15 to the bearing body 11. The specific operation method is existing technology and will not be described in detail here. The assembly also includes a disassembly frame 2, on the surface of which a drive motor 21 is mounted. It also includes a disassembly assembly disposed on the surface of the outer tapered sleeve 13. 21 is connected to the disassembly assembly via a universal structure. The universal structure allows the disassembly assembly to disassemble the outer conical sleeve 13, locking washer 14, and inner sleeve 12 from any angle or direction. The disassembly assembly includes a fixing ring 23. A sleeve 231 adapted to the inner sleeve 12 is fixedly connected to the surface of the fixing ring 23. The sleeve 231 can be fitted onto the surface of the inner sleeve 12. Several telescopic rods 232 slide on the surface of the fixing ring 23. A push block 233 is fixedly connected to one end of each telescopic rod 232. A correction assembly is provided on the surface of the telescopic rod 232 for correcting the skewed inner sleeve 12.

[0021] The inner wall of the sleeve 231 and the outer wall of the inner sleeve 12 are both provided with interlocking toothed grooves, which are threaded grooves, so that the sleeve 231 can be screwed into the outer wall of the inner sleeve 12.

[0022] The number of telescopic rods 232 is the same as the number of slots on the surface of the outer conical sleeve 13. After the telescopic rods 232 are inserted into the slots on the surface of the outer conical sleeve 13, the universal structure and the fixed ring 23 are rotated by the drive motor 21. Then, the outer conical sleeve 13 is rotated out of the surface of the inner sleeve 12 by several telescopic rods 232 that cooperate with the slots. Furthermore, since a push block 233 is provided at one end of the telescopic rod 232, the edge teeth of the locking washer 14 inserted in the slot can be pushed out of the slot when the telescopic rod 232 enters the slot, thereby separating the outer conical sleeve 13 and the locking washer 14.

[0023] Specifically, when the inner sleeve 12, i.e. the fastening sleeve, becomes misaligned due to various circumstances, the outer conical sleeve 13 and the locking washer 14 on its surface will also become misaligned simultaneously. At this time, by aligning the fixed ring 23 and its surface telescopic rod 232 parallel to the misaligned outer conical sleeve 13 and inserting them, the fixed ring 23 will become misaligned relative to the bearing seat 1. This is reflected by the universal joint structure. Through the universal joint structure, the drive motor 21 can continue to output even when the fixed ring 23 is misaligned. When the fixed ring 23 rotates, its surface telescopic rod 232 drives the outer conical sleeve 13 to rotate out in a certain misaligned direction, thereby effectively avoiding the problem of the outer conical sleeve 13 stripping and damaging the inner sleeve 12 caused by conventional rotation.

[0024] Furthermore, after removing the outer tapered sleeve 13 and the locking washer 14, the sleeve 231 is placed on the surface of the inner sleeve 12, and the sleeve 231 is screwed into the surface of the inner sleeve 12 and fixed by the output of the drive motor 21. After the skewed inner sleeve 12 is corrected by the straightening component, it is completely pulled out from the bearing body 11 to avoid damaging the bearing.

[0025] The universal structure includes a universal joint A22 fixedly connected to the output end of the drive motor 21. A universal joint B221 is movably connected to the surface of the universal joint A22. The universal joint A22 and the universal joint B221 are connected by a universal shaft. The universal joint B221 is fixedly connected to the fixed ring 23. Through the arrangement of the universal joint A22 and the universal joint B221, the output of the drive motor 21 can be transmitted to the fixed ring 23 which is tilted at any angle, thereby providing a fastening sleeve for different tilt offsets.

[0026] Furthermore, a connector 211 is fixedly connected to the end of the drive motor 21 away from the universal joint A22. The connector 211 is movably connected to the disassembly frame 2. The connector 211 can move universally on the surface of the disassembly frame 2, so that the drive motor 21 can adjust its angle accordingly with the movement of the universal joint A22 and the universal joint B221, making the output of the drive motor 21 more stable.

[0027] In this embodiment, the correction component includes a correction ring 235 fixedly connected to the surface of the telescopic rod 232. The surface of the fixed ring 23 is provided with a plurality of hydraulic cylinders adapted to the telescopic rod 232. The telescopic rod 232 is limited to slide within the hydraulic cylinders. The surface of the fixed ring 23 is fixedly connected with a plurality of hydraulic ports 236 adapted to the hydraulic cylinders.

[0028] Specifically, after the drive motor 21 outputs power to screw the sleeve 231 into the surface of the inner sleeve 12 and fix it in place, an external hydraulic pump is connected through the hydraulic port 236 to control the extension and retraction of the telescopic rod 232 in the cylinder. This causes the push block 233 at the front end of the telescopic rod 232 to press against the surface of the bearing seat 1. Through continuous output, the telescopic rod 232 is pushed tightly against the bearing seat 1. Under the action of the reaction force, the sleeve 231 will pull the inner sleeve 12 outward in the opposite direction, thereby pulling out the inner sleeve 12 that is fastened to the surface of the rotating shaft 15. Furthermore, when the inner sleeve 12 is tilted or offset, the distance between different telescopic rods 232 and the bearing seat 1 will be different. First, the different output strokes of the telescopic rod 232 against the surface of the bearing housing 1 cause the straightening ring 235 on its surface to deform to a certain extent when the telescopic rod 232 is pressed tightly against the bearing housing 1. According to the different deformation positions and deformation amounts, the hydraulic pumps at different positions are controlled to output different degrees to the cylinders at that position. Thus, the inner sleeve 12 is straightened by the extension stroke of the unbalanced telescopic rod 232. After the inner sleeve 12 is straightened to the safe pull-out position, the inner sleeve 12 is pulled out by balancing the extension strokes of each telescopic rod 232. This effectively avoids the problem of the inner sleeve 12 being pulled out in a skewed state, which would cause greater damage to the bearing.

[0029] Furthermore, the correction ring 235 is provided with several strain gauges. The correction ring 235 can be made of elastic plastic, silicone rubber, or other materials, with an allowable deformation range. The strain gauges are resistance-sensitive strain gauges and are arranged circumferentially within the correction ring 235. A hydraulic valve is provided in the hydraulic port 236. The hydraulic valve can control the hydraulic output, thereby controlling the extension and retraction of the telescopic rod 232 in the cylinder. The strain gauges are electrically connected to the hydraulic valve. When the correction ring 235 deforms, the strain gauges at the deformation positions deform accordingly, causing a change in resistance. The resistance change signal is transmitted to the hydraulic valve, which then independently outputs the telescopic rod 232 according to different deformation amounts to correct the inner sleeve 12.

[0030] The surface of the disassembly frame 2 is threaded with a locking bolt 25 that is adapted to the connector 211. One end of the locking bolt 25 is adapted to the shape of the connector 211 and is set to a frosted surface with high friction. After the angles of universal joints A22 and B221 are adjusted, and the angles of the drive motor 21 and its side connector 211 are adjusted, the locking bolt 25 is rotated to press it tightly against the connector 211, so that the connector 211 can no longer move in all directions, thereby fixing the position of the drive motor 21.

[0031] Furthermore, the assembly / disassembly frame 2 is slidably connected to a slider 24 adapted to the drive motor 21. By sliding the slider 24 and pressing it against the surface of the drive motor 21, the drive motor 21 can be further positioned. In addition, when the drive motor 21 is in the initial return position, by pressing the slider 24 against the bottom of the drive motor 21, the position of the drive motor 21 can be fixed, preventing it from making universal movements.

[0032] The push block 233 has a locking block 234 that is adapted to the locking washer 14 fixedly connected to its surface. By setting the locking block 234, when the telescopic rod 232 pushes the push block 233 into the slot on the surface of the outer conical sleeve 13, the locking block 234 can simultaneously lock onto the outer edge tooth surface of the locking washer 14 located in the slot. In this way, when the outer conical sleeve 13 is rotated outward, the locking block 234 can simultaneously drive the locking washer 14 to move out, and at the same time, the outer conical sleeve 13 and the locking washer 14 can be disassembled, thereby improving the disassembly efficiency.

[0033] Working principle: The number of telescopic rods 232 is the same as the number of slots on the surface of the outer conical sleeve 13. After the telescopic rods 232 are inserted into the slots on the surface of the outer conical sleeve 13, the universal structure and the fixing ring 23 are rotated by the drive motor 21. Then, the outer conical sleeve 13 is unscrewed from the surface of the inner sleeve 12 by the telescopic rods 232 that cooperate with the slots. Furthermore, since a push block 233 is provided at one end of the telescopic rod 232, the edge teeth of the locking washer 14 inserted in the slot can be pushed out of the slot when the telescopic rod 232 enters the slot, thereby separating the outer conical sleeve. When the inner sleeve 12, i.e., the fastening sleeve, becomes misaligned due to various circumstances, the outer conical sleeve 13 and the locking washer 14 fitted on its surface will also become misaligned simultaneously. At this time, by aligning the fixing ring 23 and its surface telescopic rod 232 parallel to the misaligned outer conical sleeve 13 and engaging it, the fixing ring 23 will become misaligned relative to the bearing seat 1 to a certain extent. This is reflected by the universal joint structure. Through the universal joint structure, the drive motor 21 can continue to output even when the fixing ring 23 is misaligned to a certain extent. The drive motor 21 outputs power to drive the bearing seat 1. After the sleeve 231 is screwed into and fixed to the surface of the inner sleeve 12, it is connected to an external hydraulic pump via the hydraulic port 236 to control the extension and retraction of the telescopic rod 232 in the cylinder. This causes the push block 233 at the front end of the telescopic rod 232 to press against the surface of the bearing seat 1. Through continuous output, the telescopic rod 232 is pushed tightly against the bearing seat 1. Under the action of the reaction force, the sleeve 231 will pull the inner sleeve 12 outward in the opposite direction, thereby pulling out the inner sleeve 12 that is fastened to the surface of the rotating shaft 15. When the inner sleeve 12 is tilted or offset, it will cause different distances of the telescopic rod 232 from the bearing. The distance between the seats 1 is not uniform, and the output stroke against the surface of the bearing seat 1 is different. As a result, when the telescopic rod 232 is pressed against the bearing seat 1, the straightening ring 235 on its surface will be deformed to a certain extent. According to the different deformation positions and deformation amounts, the hydraulic pumps at different positions are controlled to output different degrees to the cylinders at that position. Thus, the inner sleeve 12 is straightened by the extension stroke of the unbalanced telescopic rod 232. After the inner sleeve 12 is straightened to the safe pull-out position, the inner sleeve 12 is pulled out by balancing the extension stroke of each telescopic rod 232.

[0034] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A disassembly and assembly tool for easily disassembling bearing fastening sleeves, comprising a bearing housing (1), a bearing body (11), an inner sleeve (12), an outer tapered sleeve (13), a locking washer (14), and a rotating shaft (15), characterized in that, It also includes a disassembly frame (2), on the surface of which a drive motor (21) is provided; The disassembly assembly is located on the surface of the outer conical sleeve (13). The drive motor (21) is connected to the disassembly assembly via a universal joint. The disassembly assembly includes a fixing ring (23). A sleeve (231) adapted to the inner sleeve (12) is fixedly connected to the surface of the fixing ring (23). Several telescopic rods (232) slide on the surface of the fixing ring (23). A push block (233) is fixedly connected to one end of each telescopic rod (232). A correction component is disposed on the surface of the telescopic rod (232) for correcting the misalignment of the inner sleeve (12).

2. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 1, characterized in that: The universal structure includes a universal joint A (22) fixedly connected to the output end of the drive motor (21), and a universal joint B (221) movably connected to the surface of the universal joint A (22), and the universal joint B (221) is fixedly connected to the fixed ring (23).

3. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 2, characterized in that: The drive motor (21) is fixedly connected to a connector (211) at one end away from the universal joint A (22), and the connector (211) is movably connected to the mounting bracket (2).

4. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 1, characterized in that: The correction assembly includes a correction ring (235) fixedly connected to the surface of the telescopic rod (232), and the surface of the fixed ring (23) is provided with a plurality of hydraulic cylinders adapted to the telescopic rod (232), and the surface of the fixed ring (23) is fixedly connected with a plurality of hydraulic ports (236) adapted to the hydraulic cylinders.

5. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 4, characterized in that: The correction ring (235) is provided with a number of strain gauges, and the hydraulic port (236) is provided with a hydraulic valve. The strain gauges are electrically connected to the hydraulic valve.

6. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 3, characterized in that: The mounting bracket (2) has a threaded connection on its surface with a locking bolt (25) that is compatible with the connector (211).

7. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 1, characterized in that: The mounting bracket (2) has a slider (24) that is adapted to the drive motor (21) slidably connected inside.

8. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 1, characterized in that: The push block (233) has a locking block (234) that is compatible with the locking washer (14) fixedly connected to its surface.

9. The disassembly and assembly tool for easily disassembling bearing fastening sleeves according to claim 1, characterized in that: The inner wall of the sleeve (231) and the outer wall of the inner sleeve (12) are both provided with interlocking toothed grooves.

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