A bearing quick dismounting device and dismounting method

Abstract

The application relates to the technical field of special tooling for bearing dismounting, and discloses a bearing quick dismounting device and a dismounting method, which are used for dismounting bearings sleeved on rotating shafts and comprise a supporting assembly, a pushing assembly and a dismounting unit; the pushing assembly is arranged at the central position of the supporting assembly and is used for abutting against the rotating shaft matched with the bearing to be dismounted; the dismounting unit is provided with multiple groups, each group of the dismounting unit comprises a clamping assembly, a tensioning assembly and a protection assembly; the clamping assembly is a split clamping structure which can be opened and closed, and the outer side of the clamping assembly is formed with a matching working profile surface matched with the bearing raceway; the tensioning assembly is arranged correspondingly to the clamping assembly and can slide relative to the protection assembly, and the tensioning assembly can abut against the clamping assembly when the tensioning assembly is actuated, so that the opening and closing of the clamping assembly are realized; one end of the protection assembly is hinged to the clamping assembly, and the other end of the protection assembly is connected to the supporting assembly; the bearing raceway profile can be adaptively positioned and matched, and the problems of poor profile matching, single adaptation and uneven stress of traditional tooling profiles are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of bearing assembly and disassembly tooling technology, specifically to a bearing quick disassembly device and disassembly method. Background Technology

[0002] In recent years, equipment in my country's power, metallurgy, mining, port, rail transportation, and wind power sectors has continued to develop towards larger scale, heavier loads, higher precision, and longer cycle operation, significantly increasing the requirements for equipment reliability and operational economy. Spherical bearings (self-aligning ball bearings, spherical roller bearings, and spherical plain bearings, etc.) are widely used in key equipment such as coal conveying systems, crushers, speed reducers, roller conveyors, fans, and pumps due to their advantages such as self-alignment, compensation for centering errors, and ability to withstand radial / combined loads. Their usage is enormous and replacement is frequent.

[0003] There is a near lack of specialized disassembly tools for ball bearings, which are characterized by their curved surface structure, lack of retaining space on the outer ring, and tendency to slip and disengage. Most disassembly tools are made on-site, have rudimentary structures, and poor safety.

[0004] The disassembly and assembly of spherical bearings (self-aligning ball bearings, spherical roller bearings, spherical plain bearings, etc.) in the current industrial field generally relies on traditional general-purpose disassembly and assembly tools and simple operation methods. The mainstream existing technologies can be mainly divided into the following categories: Ordinary two-jaw and three-jaw mechanical pullers are the most commonly used disassembly and assembly tools on site. They are simple in structure and highly versatile, relying on claw hooks to hold the outer ring of the bearing and using a lead screw to push and pull it apart. However, they have obvious drawbacks: they lack a dedicated self-centering limiting structure, resulting in poor fit with the curved outer circle of spherical bearings, making them prone to misalignment, slippage, and disengagement during operation; uneven force distribution at three points easily damages the journal and bearing housing end face, and can also cause deformation and damage to the bearing raceway and spherical surface; they can only be used with regular cylindrical bearings, and have extremely poor adaptability to irregular spherical structures, resulting in time-consuming disassembly and assembly with a low success rate.

[0005] The hydraulic integrated universal puller has greater force than the manual puller and is suitable for disassembling large-size heavy-duty bearings. However, it still uses the traditional claw clamping structure and has not been optimized for the spherical characteristics of ball bearings. It still has difficulties in centering, lacks self-centering function, and cannot adjust the clamping angle in narrow installation spaces. It is prone to one-sided force and jamming, and cannot be pulled out. In addition, the overall size is relatively large, and its applicability to narrow maintenance positions on site is poor.

[0006] Disassembly methods involving hammering, prying with copper rods, and flame heating are traditional, crude disassembly and assembly processes. These methods rely on external force to strike or pry apart bearings, combined with thermal expansion through heating, to achieve disassembly. Lacking positioning and force-equalizing protection, they depend entirely on the experience of maintenance personnel, easily causing shaft wear, bearing breakage, and housing cracking. Flame heating poses risks of burning seals and aging surrounding components, resulting in significant operational safety hazards and failing to meet industry requirements for non-destructive maintenance and lean repair.

[0007] The existing tooling for split-type clamps and ring-type ordinary disassembly and assembly uses a semi-ring or clamp structure to hold the outer ring of the bearing. Although this improves the ring fit, it lacks an automatic centering and coaxial adjustment mechanism, making manual alignment cumbersome. It cannot adapt to the spherical curvature of the spherical bearing and the installation coaxiality error. It also lacks a quick locking and synchronous force pulling structure, making disassembly and assembly steps cumbersome and positioning time-consuming. It does not have the functions of quick disassembly and assembly or one-click centering, and it is only compatible with a limited number of models, resulting in poor versatility. Summary of the Invention

[0008] This invention provides a bearing quick disassembly device and disassembly method, aiming to at least solve the technical problems of existing bearing disassembly devices, such as narrow applicability, poor surface fit, non-adjustable tension accuracy, weak positioning stability, easy deviation and slippage, and low versatility.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a bearing quick disassembly device for disassembling a bearing sleeved on a rotating shaft, comprising a support assembly, a pushing assembly, and a disassembly / assembly unit; the pushing assembly is located at the center of the support assembly and is used to push against the rotating shaft to which the bearing to be disassembled is located; the disassembly / assembly unit is provided in multiple sets, each set of disassembly / assembly unit including a locking assembly, a tensioning assembly, and a protective assembly; the locking assembly is an openable and closable split locking structure, which can be opened and closed under external force to change its outer diameter, and its outer side is formed with a fitting working surface adapted to the bearing raceway; the tensioning assembly is set corresponding to the locking assembly and can slide relative to the protective assembly, and when the tensioning assembly is in motion, it can press against the locking assembly to realize the opening and closing of the locking assembly; one end of the protective assembly is hinged to the locking assembly, and the other end of the protective assembly is connected to the support assembly; when the tensioning assembly slides towards the locking assembly, the outer diameter of the locking assembly expands and is interference-fitted with the bearing raceway; when the tensioning assembly slides away from the locking assembly, the outer diameter of the locking assembly shrinks and separates from the bearing raceway.

[0010] Those skilled in the art will understand that this device, through the overall coordination of support components, pushing components, and multiple sets of disassembly and assembly units, constructs an adaptively adjustable bearing quick disassembly structure. Compared to traditional fixed-position disassembly fixtures, this invention employs a split, openable positioning component combined with a sliding tensioning drive structure, which can adaptively align and fit according to the bearing raceway contour, effectively solving the problems of poor surface fit, limited adaptability, easy slippage, and uneven force distribution of traditional fixtures. The circumferential coordination and synchronous tensioning of multiple disassembly and assembly units ensure uniform force distribution during bearing disassembly, avoiding scratches, deformation, and secondary damage to the bearing raceway caused by single-point compression. The sliding wedge-driven opening and closing extension of the positioning component by the tensioning component achieves smooth disassembly without rigid impact or violent pulling, significantly improving disassembly safety and operational stability. The overall structure has high integration, flexible adjustment, and strong versatility, adaptable to various bearing disassembly conditions of different specifications and raceway types, effectively reducing fixture replacement costs and significantly improving bearing disassembly efficiency and adaptability.

[0011] In some embodiments, the locking assembly includes a functional head, and the protective assembly includes a push rod sleeve; the functional head and one end of the push rod sleeve are hinged together by a bushing; there are two functional heads, and a mating space is reserved between the two functional heads; the tensioning assembly extends into the mating space and wedges tightly with the two functional heads.

[0012] In some embodiments, the mating working surface is a spherical surface or an arc surface, which is adapted to the gap mating and positioning of spherical bearings or arc raceway bearings.

[0013] In some embodiments, a slide is provided at the center of each functional head, and an adjustable movable bar with multiple layers is installed in the slide. One end of the adjustable movable bar is a semi-circular arc structure that adapts to the overall curvature of the functional head, and the other end is an inclined surface structure.

[0014] In some embodiments, limit strips are symmetrically provided on both sides of the inclined surface of each set of adjustable movable strips. The limit strips are used to limit the superposition position and sliding stroke of the multi-layer adjustable movable strips.

[0015] In some embodiments, the tensioning assembly includes a push rod and a wedge. The push rod is slidably inserted inside the push rod sleeve, and the end of the push rod is fixedly connected to the wedge. The wedge extends into the mating space between the two functional heads.

[0016] In some embodiments, the wedge block is a trapezoidal structure, and adjustable tensioning blocks are respectively mounted on the two inclined planes of the wedge block. Protruding limit strips are provided at both ends of the wedge block. The protruding limit strips are used to constrain the assembly position and adjustment stroke of the adjustable tensioning blocks to realize the anti-disengagement limit assembly of the wedge block.

[0017] In some embodiments, the support component is a disc-shaped structure, and the support component has adjustment elongated holes arranged corresponding to the disassembly and assembly units.

[0018] In some embodiments, the outer side of the push rod is provided with external threads, the inner side of the protective assembly is provided with internal threads, and the push rod and the protective assembly are threadedly connected.

[0019] A bearing disassembly method, implemented using a quick bearing disassembly device, includes the following steps: placing a support assembly on the outside of the bearing to be disassembled; assembling a jacking assembly at the center of the support assembly, with the end of the jacking assembly facing the end face of the shaft on which the bearing is mounted; the protective assembly of the disassembly unit passes through the support assembly and is then fixed with a nut, so that each set of locking assemblies is arranged around the outside of the bearing; driving the tensioning assembly to slide towards the locking assemblies, causing the outer diameter of the locking assemblies to expand, so that the outer contact working surface of the locking assemblies fits against the bearing raceway to form a limiting support; activating the jacking assembly to continuously push against the shaft, relying on the locking assemblies to form a reverse limiting support for the bearing, until the bearing and shaft separate; driving the tensioning assembly to slide away from the locking assemblies in the opposite direction, causing the outer diameter of the locking assemblies to shrink and separate from the bearing raceway; adjusting the position of the disassembly unit and then removing the entire device to complete the disassembly operation.

[0020] The work process is standardized in steps. First, the tooling is positioned, then the movable strip and tensioning block are pre-adjusted according to the bearing size. The positioning and fitting accuracy is controllable, avoiding damage to the bearing due to forced compression caused by size mismatch. The disassembly and assembly unit position is first radially adjusted and locked, then the clamping support is wedge-tightened, and finally, the separation is pushed out. The operation logic is reasonable, and the bearing stress is stabilized after multi-point stable support is completed in advance. The device's built-in multi-position adjustable structure allows for adaptation and adjustment, handling bearings of different diameters and raceways without changing tooling parts, simplifying on-site disassembly and assembly operations and shortening the disassembly time for a single bearing. The overall operation is simple and easy to learn, lowering the experience threshold for operators. It is suitable for batch equipment maintenance scenarios, and the standardized procedures reliably ensure bearing protection during each disassembly, improving the workpiece rework pass rate. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional view of a bearing quick disassembly device according to the present invention; Figure 2 This is a schematic diagram of the structure of the disassembly and assembly unit before assembly in an embodiment of the present invention; Figure 3 This is a side view of the disassembly and assembly unit in an embodiment of the present invention; Figure 4 This is a schematic diagram of the supporting component in an embodiment of the present invention; Figure 5 This is a front cross-sectional view of the card slot assembly in an embodiment of the present invention; Figure 6 This is a front sectional view of the wedge block in an embodiment of the present invention; Figure 7 This is a front view of the wedge block in an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Support assembly; 2. Pushing assembly; 3. Assembly / disassembly unit; 301. Positioning assembly; 302. Tensioning assembly; 3021. Push rod; 3022. Wedge block; 303. Protective assembly; 4. Rotating shaft; 5. Bearing raceway; 6. Fitting working surface; 7. Bushing; 8. Adjustable moving strip; 9. Limiting strip; 10. Adjustable tensioning block; 11. Protruding limit strip; 12. Adjusting elongated hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0025] It should be noted that in the description of this invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0028] like Figure 1 and Figure 2As shown, this embodiment provides a bearing quick disassembly device, including a support assembly 1, a pushing assembly 2, and a disassembly / assembly unit 3. The pushing assembly is located at the center of the support assembly 1 and is used to push against the rotating shaft 4 of the bearing to be disassembled. The disassembly / assembly unit 3 is provided in multiple sets, each set of disassembly / assembly unit 3 including a locking assembly 301, a tensioning assembly 302, and a protective assembly 303. The locking assembly 301 is an openable and closable split locking structure, which can be opened and closed under external force to change the outer diameter. Its outer side is formed with a fitting working surface 6 adapted to the bearing raceway 5. The tensioning assembly 302 corresponds to the locking assembly 3. 01 is set and can slide relative to the protective component 303. When the tensioning component 302 is activated, it can press against the locking component 301 to realize the opening and closing of the locking component 301. One end of the protective component 303 is hinged to the locking component 301, and the other end of the protective component 303 is connected to the support component 1. When the tensioning component 302 slides towards the locking component 301, the outer diameter of the locking component 301 expands and is interference-fitted with the bearing raceway 5. When the tensioning component 302 slides away from the locking component 301, the outer diameter of the locking component 301 shrinks and separates from the bearing raceway 5.

[0029] The entire bearing disassembly fixture is composed of a support component 1, a centrally located jacking component, and multiple disassembly and assembly units 3. It features high structural integration and convenient handling and on-site placement. Multiple disassembly and assembly units 3 simultaneously provide circumferential multi-point support to the bearing's outer ring, ensuring even force distribution across the bearing during disassembly and jacking, preventing localized concentrated compression and thus avoiding single-point damage or scratches to the bearing raceway, achieving non-destructive bearing disassembly. The locking component 301 adopts a split, openable structure, paired with a tensioning component 302 that allows for axial sliding relative to the protective component 303. The locking component 301 opens and closes via a wedge-driven transmission. The outer contact working surface 6 of the locking component 301 can adaptively fit bearing raceways of different shapes, allowing for compatibility with various bearing specifications without replacing the main fixture body. This significantly improves the fixture's versatility and reduces the costs associated with purchasing, storing, and managing multiple sets of fixtures. The protective component 303 is hinged to the locking component 301 at one end and assembled on the support component 1 at the other end. The hinged structure can adaptively and finely adjust the locking support angle, and the support structure is stable and not easy to shake or shift. The tensioning component 302 slides smoothly and slowly opens the locking component 301 by mechanical wedging. There is no need for knocking or violent prying. With the push force of the central push component, the bearing and the shaft can be separated smoothly. The operation process is simple and greatly improves the efficiency of bearing maintenance and disassembly.

[0030] In this embodiment, as Figure 2 and Figure 3As shown, the locking assembly 301 includes a functional head, and the protective assembly 303 includes a push rod sleeve; the functional head and one end of the push rod sleeve are hinged together by a bushing 7; there are two functional heads, and a mating space is reserved between the two functional heads; the tensioning assembly 302 extends into the mating space and is wedge-fitted with the two functional heads.

[0031] The positioning component 301 has two opposing functional heads as support components that directly contact the bearing. The protective component 303 has a corresponding top rod sleeve for housing and guiding the tensioning component 302. The ends of the functional heads and the top rod sleeve are hinged together by a bushing 7. The bushing 7 reduces the friction of the hinge rotation, ensuring smooth rotation without jamming or stuck during the opening and closing process. The positioning support angle can be adaptively adjusted slightly for bearings with different installation spaces, making it more adaptable to various scenarios. A separate wedge-tightening space is provided between the two opposing functional heads, providing an independent pressing working surface for the wedge block at the end of the tensioning component 302. The axial pressing force applied by the wedge block can be fully applied to the two functional heads, resulting in concentrated force transmission without dispersion loss. The tensioning and opening force is stable and controllable, ensuring that the positioning component 301 can fully open and fit the bearing raceway, resulting in higher reliability of the transmission and engagement. In this embodiment, as Figure 2 As shown, the mating working surface 6 is a spherical or arc-shaped surface, which is adapted to the gap mating and positioning of spherical bearings or arc-shaped raceway bearings.

[0032] The outer surface 6 of the positioning assembly 301, used for contacting the bearing, is defined as either a spherical or arc-shaped surface. This allows for perfect matching of the inner and outer ring shapes of spherical bearings with arc-shaped raceways and ordinary arc-shaped raceways, achieving large-area, complete surface contact between the surface and the bearing raceway. Compared to traditional tooling line contact and point contact positioning methods, surface contact significantly reduces the contact pressure per unit area, effectively preventing indentations, scratches, and impact damage to the bearing surface during disassembly. The tight engagement of the arc / spherical contact structure prevents the positioning assembly 301 from slipping or shifting along the bearing outer ring during operation, significantly enhancing support and positioning stability and further reducing the probability of bearing disassembly damage.

[0033] In some embodiments, such as Figure 5 As shown, each functional head has a slide rail at its center, and the slide rail is equipped with multiple layers of adjustable movable bars 8. One end of the adjustable movable bar 8 is a semi-circular arc structure that matches the overall curvature of the functional head, and the other end is an inclined surface structure.

[0034] Multiple adjustable movable bars 8 are stacked and assembled in the central area of ​​each functional head. One end of the adjustable movable bar 8 is machined into a semi-circular arc structure consistent with the overall curvature of the functional head, ensuring a smooth and continuous outer contour after stacking, without any step gaps affecting the fit. The other end of the adjustable movable bar 8 is designed as an inclined surface. When multiple adjustable movable bars 8 are stacked, the inclined surfaces fit together, and the stacking and pulling adjustment process is smooth and without jamming. According to the inner and outer ring diameters of the bearing to be disassembled, the operator can change the overall outer diameter of the functional head by adding, removing, or pulling the adjustable movable bars 8 to adapt to bearings of different thicknesses. The entire tooling can be adapted to different sizes by simply adding or removing the adjustable movable bars 8, without replacing the entire set of clamping components, thus widening the tooling's adaptable size range and reducing the tooling investment cost required for the maintenance of bearings of multiple sizes.

[0035] More preferably, such as Figure 5 As shown, each adjustable movable bar 8 has symmetrical limit strips 9 on both sides of its inclined surface. The limit strips 9 are used to limit the stacking position and sliding stroke of the multi-layer adjustable movable bars 8.

[0036] On the left and right sides of the inclined surface of each set of adjustable movable bars 8, symmetrical limiting strips 9 are arranged. The limiting strips 9 form a constraint groove that wraps around the multiple layers of stacked adjustable movable bars 8, which can strictly limit the left and right lateral sliding stroke of the adjustable movable bars 8 and prevent the adjustable movable bars 8 from shifting or misaligning when stacked for adjustment. At the same time, the limiting strips 9 can prevent the adjustable movable bars 8 from slipping outward and falling apart during disassembly under stress. Even with long-term repeated pulling and adjusting of the adjustable movable bars 8 and continuous bearing reverse support force, the multiple layers of adjustable movable bars 8 can still maintain a neat stacked state without displacement or falling off. After long-term use, the dimensional adjustment accuracy of the tooling is stable, and there is no need to frequently correct the position of the adjustable movable bars 8.

[0037] In this embodiment, as Figure 2 As shown, the tensioning assembly 302 includes a push rod 3021 and a wedge block 3022. The push rod 3021 is slidably inserted inside the push rod sleeve. The end of the push rod 3021 is fixedly connected to the wedge block 3022. The wedge block 3022 extends into the mating space between the two functional heads.

[0038] The tensioning assembly 302 is composed of a push rod 3021 and a wedge block 3022. The push rod 3021 is slidably inserted inside the push rod sleeve of the protective assembly 303. The push rod sleeve provides radial limiting and guiding for the push rod 3021 throughout its entire movement. The push rod 3021 can only slide linearly along the axial direction without lateral deviation or swaying, ensuring that the thrust is always accurately transmitted to the front wedge block 3022. The end of the push rod 3021 and the wedge block 3022 are fixedly connected with no relative sliding gap. The axial thrust output by the push rod 3021 can be transmitted to the wedge block 3022 without loss and completely. Then, the wedge block 3022 converts it into a radial tensioning force that drives the two functional heads to open. The power transmission efficiency is high. Only a small force is needed to push the push rod 3021 to achieve a large opening of the locking assembly 301, which is labor-saving and provides a stable and reliable tensioning drive.

[0039] Preferably, such as Figure 5 and Figure 6 As shown, the wedge block 3022 has a trapezoidal structure, and adjustable tensioning blocks 10 are respectively installed on the two inclined planes of the wedge block 3022. Figure 7 As shown, both ends of the wedge block 3022 are provided with protruding limit strips 11. The protruding limit strips 11 are used to constrain the assembly position and adjustment stroke of the adjustable tension block 10, so as to realize the anti-disengagement limit assembly of the wedge block 3022.

[0040] The wedge block 3022 adopts a trapezoidal contour structure with inclined sides. Utilizing the principle of wedge tightening, it achieves a larger radial opening stroke with a smaller axial thrust, resulting in significant labor-saving effect. Independent adjustable tensioning blocks 10 are installed on the inclined planes of both sides of the wedge block 3022. Operators can replace or fine-tune the adjustable tensioning blocks 10 according to the assembly gap between the functional head and the wedge block 3022, or the wear caused by long-term use, to compensate for the fit clearance and avoid problems such as insufficient tension and loose fit after wear, thus extending the overall service life of the tooling. The wedge block 3022 has integrated protruding limiting strips 11 at both ends, ensuring that the wedge block 3022 can enter the two functional heads at a predetermined angle with sufficient space for fit, maintaining continuously controllable fit conditions.

[0041] like Figure 4 As shown, the support component 1 has a disc-shaped structure, and the support component 1 has an adjustment elongated hole 12 arranged corresponding to the disassembly and assembly unit 3.

[0042] The support component 1 has a disc-shaped structure. The disc itself is rigid and not easily deformed under stress, and can stably support multiple sets of disassembly and assembly units 3. Radially extending adjustment holes 12 are provided on the disc for each set of disassembly and assembly units 3. The protective components 303 of the disassembly and assembly units 3 can be inserted and fixed in the adjustment holes 12. Workers can simultaneously adjust the support radius of all locking components 301 according to the bearing's outer diameter, adapting to bearings of various outer diameters (large, medium, and small). The elongated holes provide stable guidance and smooth sliding adjustment. After adjustment, the protective components 303 can be directly locked in place without the need for additional complex adjustment brackets. The structure is simple, further enhancing the tooling's ability to adapt to bearings of different outer diameters.

[0043] In this embodiment, the outer side of the push rod 3021 is provided with an external thread, and the inner side of the protective component 303 is provided with an internal thread, and the push rod 3021 and the protective component 303 are threadedly connected.

[0044] The push rod 3021 and the protective component 303 adopt a threaded mating structure with matching internal and external threads. By rotating the push rod 3021, the axial feed distance of the push rod 3021 relative to the protective component 303 can be precisely controlled. Compared with the direct push-pull sliding structure, the threaded drive has a self-locking characteristic. After rotating to the correct position, the push rod position can be fixed without additional locking parts. During operation, the push rod will not move backward or the locking position will not loosen due to force, which greatly improves the stability of the locking support. The threaded feed can achieve continuous adjustment of small strokes and can precisely control the expansion of the outer diameter of the locking component 301. It will not slip due to insufficient support force, nor will it damage the bearing raceway 5 due to excessive interference. At the same time, the threaded drive has a significant force-increasing effect. The operator only needs to rotate the push rod 3021 to output sufficient thrust to open the locking component 301, which saves effort. The structure is simple and compact, and no additional guide or locking accessories are required, reducing the overall processing and assembly costs.

[0045] In some embodiments, the jacking assembly is a mechanical screw jack that is detachably mounted at the center of the support assembly 1.

[0046] The jacking assembly uses a mechanical screw jack and is installed in the center of the support assembly 1 in a detachable assembly manner. The screw jack outputs jacking force through threaded transmission, and the jacking force is uniform, continuous and controllable, without impact jacking, avoiding sudden bearing cracking and falling off due to instantaneous impact force. The jack can be disassembled and separated, which is convenient for lubrication, maintenance and replacement of the jack. At the same time, jacks with different strokes can be replaced according to the length of the rotating shaft 4 to adapt to rotating shafts of different lengths, making the overall use more flexible and the later maintenance more convenient.

[0047] The present invention also provides a bearing disassembly method, which is implemented using a bearing quick disassembly device and includes the following steps: Place the support assembly 1 on the outside of the bearing to be disassembled, and assemble the push assembly 2 at the center of the support assembly 1, so that the end of the push assembly 2 is directly opposite the end face of the shaft on which the bearing is fitted.

[0048] The protective component 303 of the disassembly and assembly unit 3 passes through the support component 1 and is then fixed by a nut. Specifically, the protective component 303 passes through the adjustment elongated hole 12 opened on the support component 1 and is fixed by a nut, so that each set of locking components 301 is arranged around the outside of the bearing.

[0049] The tensioning component 302 is driven to slide closer to the locking component 301, causing the outer diameter of the locking component 301 to expand, so that the outer working surface 6 of the locking component 301 fits with the bearing raceway 5 to form a limiting support.

[0050] The push assembly 2 is activated to continuously push against the rotating shaft 4, and the positioning assembly 301 provides reverse limiting support for the bearing until the bearing and the rotating shaft 4 separate.

[0051] The reverse drive tensioning component 302 slides away from the locking component 301, the outer diameter of the locking component 301 shrinks and separates from the bearing raceway 5. After adjusting the position of the disassembly and assembly unit 3, the entire device is moved away to complete the disassembly operation.

[0052] This method utilizes the basic structure of the device to complete a standardized disassembly process. The operation steps are simple and clear, and bearing disassembly and assembly can be completed without complex fine-tuning parts. First, the positions of multiple sets of disassembly and assembly units 3 are uniformly adjusted to ensure that the bearing's circumferential support is evenly distributed. The unidirectional sliding tensioning component 302 can quickly open the locking structure and establish stable support by adhering to the bearing raceway 5. Reverse sliding allows for quick release and separation. The locking and releasing operations are simple. The entire process relies on the central coaxial pushing structure to smoothly apply the separation force, without violent knocking or prying operations, which can effectively avoid pressure scratches on the bearing raceway and shaft surface, achieving non-destructive disassembly. The entire operation process is highly versatile and can be adapted to the disassembly of bearings with various outer diameter specifications, reducing the difficulty for operators and effectively improving the disassembly efficiency of on-site equipment maintenance.

[0053] The specific process for disassembling bearings using this device is as follows: Move the support assembly 1 as a whole to the outside of the bearing to be disassembled, align the central cavity of the support assembly 1 with the bearing's matching shaft 4, install and fix the detachable mechanical screw jack in the center of the support assembly 1, adjust the height of the jack head so that the jack's pushing end is directly facing the end face of the shaft 4, ensuring that the pushing force can be output in a straight line along the shaft axis and avoiding eccentric pushing.

[0054] Observe the inner and outer ring diameters and raceway curvature of the bearing to be disassembled. Adjust the multi-layered adjustable movable strips 8 inside the functional head by pulling or adding / removing them to change the overall outer contour dimensions of the functional head. The inclined surfaces of the adjustable movable strips 8 are limited by the limit strips 9 on both sides to prevent them from shifting or coming off during the adjustment process, until the outer working surface contour of the functional head matches the bearing raceway. Then, fine-tune the adjustable tensioning blocks 10 on the inclined surfaces on both sides of the trapezoidal wedge 3022. Adjust the assembly position of the adjustable tensioning blocks 10 according to the gap between the wedge 3022 and the functional head. The front and rear end protrusion limit strips 11 of the wedge 3022 constrain the travel of the tensioning blocks to prevent the adjustable tensioning blocks 10 from slipping, thereby compensating for the assembly gap and ensuring a tight wedge fit in the future.

[0055] Simultaneously adjust multiple sets of disassembly and assembly units 3, so that the protective components 303 of each set of disassembly and assembly units 3 are positioned on the support components 1, and uniformly adjust the radial support radius of all locking components 301 so that all functional heads are correspondingly wrapped around the outer side of the bearing outer ring; after adjusting to the appropriate position, lock the relative position between the protective components 303 and the support components 1 to prevent the disassembly and assembly units 3 from slipping out of the adjustment elongated holes 12 during operation, and ensure that the bearing circumferential multi-point support position is uniform and symmetrical.

[0056] The push rod 3021 of the tensioning component 302 is pushed inward axially. The push rod 3021 slides smoothly and linearly inside the push rod sleeve. The trapezoidal wedge 3022 fixed at the end of the push rod 3021 extends into the mating space between the two sets of functional heads. Under the pressure of the inclined surface of the wedge 3022, the two opposing functional heads open outward with the hinge of the bushing 7 as the fulcrum. The spherical / arc-shaped working surface of the outer side of the functional head fits tightly into the bearing raceway gap, forming a circumferential multi-point uniform surface support. The fitting angle is adaptively adjusted by the hinge structure to ensure that there is no local suspension or single-point force.

[0057] Slowly rotate the operating part of the screw jack, and the jack will continuously and evenly push the rotating shaft 4 forward. At this time, the locking component 301 forms a reverse limiting support for the bearing, and the bearing is subjected to stable circumferential constraint. The rotating shaft 4 continues to move outward, and a separation gap is gradually generated between the bearing and the rotating shaft 4. Continue to operate the jack until the bearing is completely detached from the rotating shaft, so as to achieve non-destructive disassembly without impact or scratches.

[0058] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A quick-release bearing device for disassembling a bearing sleeved on a rotating shaft, characterized in that, It includes a support assembly (1), a jacking assembly (2), and a disassembly and assembly unit (3); The jacking component is located at the center of the support component (1) and is used to push against the rotating shaft (4). The disassembly and assembly unit (3) is provided in multiple sets, and each set of the disassembly and assembly unit (3) includes a locking component (301), a tensioning component (302) and a protective component (303). The locking assembly (301) is an openable split locking structure that can be opened and closed under external force to change the outer diameter. Its outer side is formed with a fitting working surface (6) that is adapted to the bearing raceway (5). The tensioning component (302) is set to the corresponding locking component (301) and slides relative to the protective component (303). When the tensioning component (302) is activated, it can press against the locking component (301) to realize the opening and closing of the locking component (301). One end of the protective component (303) is hinged to the locking component (301), and the other end of the protective component (303) is connected to the support component (1); When the tensioning assembly (302) slides toward the locking assembly (301), the outer diameter of the locking assembly (301) expands and is interference-fitted with the bearing raceway (5); As the tensioning assembly (302) slides away from the locking assembly (301), the outer diameter of the locking assembly (301) decreases and separates from the bearing raceway (5).

2. The bearing quick disassembly device according to claim 1, characterized in that, The locking assembly (301) includes a functional head, and the protective assembly (303) includes a top rod sleeve; The functional head and one end of the top rod sleeve are hinged together by a bushing (7); There are two functional heads, and a mating space is reserved between the two functional heads. The tensioning component (302) extends into the mating space and is wedge-fitted with the two functional heads.

3. The bearing quick disassembly device according to claim 2, characterized in that, The bonding working surface (6) is a spherical surface or a circular arc surface.

4. The bearing quick-release device according to claim 2, characterized in that, Each of the functional heads is provided with a slide rail at its center, and an adjustable movable bar (8) with multiple layers is installed in the slide rail. One end of the adjustable movable bar (8) is a semi-circular arc structure that matches the overall curvature of the functional head, and the other end is an inclined surface structure.

5. The bearing quick-release device according to claim 4, characterized in that, Each adjustable movable bar (8) has symmetrically arranged limit strips (9) on both sides of its inclined surface. The limit strips (9) are used to limit the superposition position and sliding stroke of the multi-layer adjustable movable bars (8).

6. The bearing quick-disassembly device according to claim 2, characterized in that, The tensioning assembly (302) includes a push rod (3021) and a wedge (3022). The push rod (3021) is slidably inserted inside the push rod sleeve. The end of the push rod (3021) is fixedly connected to the wedge (3022). The wedge (3022) extends into the mating space between the two functional heads.

7. The bearing quick-release device according to claim 6, characterized in that, The wedge (3022) is a trapezoidal structure. Adjustable tension blocks (10) are respectively mounted on the two inclined planes of the wedge (3022). The front and rear ends of the wedge (3022) are provided with protruding limit strips (11). The protruding limit strips (11) are used to constrain the assembly position and adjustment stroke of the adjustable tension blocks (10) to realize the anti-detachment limit assembly of the wedge (3022).

8. The bearing quick-disassembly device according to claim 1, characterized in that, The support component (1) is a disc-shaped structure, and the support component (1) has an adjustment elongated hole (12) arranged corresponding to the disassembly and assembly unit (3).

9. The bearing quick-release device according to claim 6, characterized in that, The top rod (3021) has an external thread on its outer side, and the protective component (303) has an internal thread on its inner side. The top rod (3021) and the protective component (303) are threaded together.

10. A bearing disassembly method, characterized in that, The bearing quick-release device according to any one of claims 1 to 9 is used, comprising the following steps: Place the support assembly (1) on the outside of the bearing to be disassembled, and assemble the push assembly (2) at the center of the support assembly (1) so that the end of the push assembly (2) is directly opposite the end face of the shaft (4) on which the bearing is sleeved. The protective component (303) of the disassembly and assembly unit (3) passes through the support component (1) and is then fixed by a nut, so that each set of locking components (301) is arranged around the outside of the bearing; The drive tensioning component (302) slides towards the locking component (301), causing the outer diameter of the locking component (301) to expand, so that the outer working surface (6) of the locking component (301) fits against the bearing raceway (5) to form a limiting support; The push assembly (2) is activated to continuously push against the rotating shaft (4), and the locking assembly (301) forms a reverse limiting support for the bearing until the bearing and the rotating shaft (4) are separated from each other; The tensioning assembly (302) is driven in the opposite direction to slide away from the locking assembly (301). The outer diameter of the locking assembly (301) is reduced and it separates from the bearing raceway (5). After adjusting the position of the disassembly unit (3), the entire device is moved away to complete the disassembly operation.

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