A large tapered bearing lifting device

Abstract

This invention discloses a lifting device for large tapered bearings, belonging to the field of bearing equipment technology. The device includes a main structure, a locking assembly, and a hanging structure. Multiple positioning elements are arranged on the outer periphery of the main structure, allowing it to be coaxially positioned on the upper end face of the inner ring body via these elements. The locking assembly includes a turntable, sliders, and hooks. The turntable is coaxially mounted on the main structure, and the hooks are rotatably connected to the main structure. Each hook is rotatably connected to a slider, which is movably connected to the turntable. The turntable can rotate around its own axis, simultaneously driving multiple sliders to slide radially along the main structure, causing the hooks to rotate relative to the main structure to lock or disengage from the retaining edge. Multiple hanging structures are arranged at intervals along the circumference of the main structure for connecting lifting equipment. This lifting device avoids the need to drill lifting holes in the tapered bearing, achieving an efficient and non-destructive lifting process and improving the service life of the tapered bearing.

Description

Technical Field

[0001] This invention relates to the field of bearing equipment technology, and in particular to a lifting device for large tapered bearings. Background Technology

[0002] Large tapered bearings are key components in the field of mechanical transmission. They are mainly used to bear radial and axial loads and are widely used in large mechanical equipment such as wind turbine gearboxes and heavy vehicles to ensure the smooth operation of the equipment, transmit power, and maintain the stability of the mechanical structure.

[0003] Due to the large size and heavy weight of large tapered bearings, hoisting equipment must be used to complete the daily lifting, placement, and installation operations. In traditional large tapered bearing hoisting operations, the usual practice is to use the lifting holes located on the end face of the bearing's inner ring to achieve the lifting operation.

[0004] However, during the lifting process, the lifting hole of a large tapered bearing experiences significant stress concentration. With repeated lifting operations and prolonged stress, defects such as cracks and deformation can easily appear around the lifting hole, leading to bearing failure due to the lifting hole. This affects the bearing's normal performance and service life, increasing equipment maintenance costs and operational risks. Summary of the Invention

[0005] The purpose of this invention is to provide a lifting device for large tapered bearings, so as to solve the technical problem that the existing method of lifting bearings by opening holes in the inner ring of the bearing can easily lead to bearing damage.

[0006] To achieve this objective, the present invention adopts the following technical solution: A large tapered bearing lifting device is provided for lifting and lowering the bearing structure, the bearing structure including an inner ring body, the outer periphery of which is provided with a retaining edge. Specifically, the lifting device includes: The main structure has multiple positioning elements on its outer periphery, and the main structure can be coaxially positioned on the upper end face of the inner ring body through the positioning elements. The locking assembly includes a turntable, a slider, and a hook. The turntable is coaxially disposed on the main structure, and the hook is rotatably connected to the main structure. A slider is rotatably connected to each hook. The slider is movably connected to the turntable. The turntable can rotate around its own axis and simultaneously drive multiple sliders to slide radially along the main structure, thereby causing the hook to rotate relative to the main structure to lock or disengage from the stop. Multiple suspension structures are arranged at intervals along the circumference of the main structure, and the suspension structures are used to connect lifting equipment.

[0007] Preferably, the slider is provided with a drive shaft, and the turntable is provided with a drive groove corresponding to each slider. The drive shaft passes through and is slidably connected to the drive groove, and at least part of the drive groove is bent and extended. When the turntable rotates around its own axis, the inner wall of the drive groove can push the drive shaft to move radially along the turntable, thereby driving the slider to slide radially along the main structure.

[0008] Preferably, along the radial direction of the main structure, the drive groove is divided into a first groove segment and a second groove segment extending circumferentially around the turntable, and the first groove segment and the second groove segment are connected by a transition groove segment; along the direction from the first groove segment to the second groove segment, the transition groove segment gradually moves away from the central axis of the turntable; when the drive shaft is located in the first groove segment, the hook is disengaged from the stop edge; when the drive shaft is located in the second groove segment, the hook is locked to the stop edge.

[0009] Preferably, the turntable has a circumferentially extending limiting hole, and the main structure is provided with a limiting block, which is slidably connected in the limiting hole to limit the rotational stroke of the turntable.

[0010] Preferably, the turntable is provided with an operating component, and the outer periphery of the main structure is provided with two limiting protrusions, which are located at both ends of the movement trajectory of the operating component to limit the movement path of the operating component.

[0011] Preferably, the main structure has a limiting groove extending radially thereon, and the slider is at least partially slidably connected to the limiting groove.

[0012] Preferably, at least a portion of the bottom surface of the guard is inclined upward to form an anti-slip bevel, and the hook is provided with a locking bevel corresponding to the anti-slip bevel.

[0013] Preferably, the positioning element includes two positioning plates arranged opposite each other, the hook is disposed between the two positioning plates, and the bottom of the positioning plate has a positioning protrusion that can be limited to the outer peripheral surface of the inner ring body.

[0014] Preferably, the main structure is annular, and the inner surface of the main structure is flush with the inner surface of the inner ring body.

[0015] Preferably, the hanging structure is at least one of a hanging hole, a hook, or a ring, and a plurality of the hanging structures are arranged at intervals on the inner peripheral wall of the main structure.

[0016] The beneficial effects of this invention are: The large tapered bearing lifting device proposed in this invention first uses multiple positioning components on the outer periphery of the main structure to coaxially and stably position the entire device on the upper end face of the inner ring body of the bearing structure, thereby ensuring the alignment accuracy between the main structure and the bearing structure. Then, the operator rotates the turntable in the locking assembly. Since the turntable is coaxially mounted on the main structure and movably connected to multiple sliders, the rotation of the turntable synchronously drives all sliders to slide radially along the main structure. Each slider is connected to a hook, and the radial movement of the slider is converted into the rotational movement of the hook relative to the main structure. This allows all hooks to rotate simultaneously and smoothly and lock under the retaining edge extending from the outer periphery of the bearing inner ring, achieving a lock between the main structure and the bearing inner ring. This allows the lifting force to be transmitted to the retaining edge through the hooks and further distributed to the entire structure of the bearing inner ring through the retaining edge, avoiding stress concentration caused by the lifting hole bearing the entire load locally in traditional methods, while maintaining the structural integrity and mechanical performance of the bearing. Furthermore, multiple suspension structures arranged at intervals along the circumference of the main structure are used to connect external lifting equipment, ensuring that the lifting force is evenly distributed across the main structure. The force is then smoothly transferred to the inner ring body through locked hooks. Thus, during the entire lifting and lowering process, the inner ring body no longer bears direct, localized tensile or compressive stress, effectively reducing the risk of cracks or plastic deformation induced in the inner ring body due to lifting operations, and ensuring the service life and operational reliability of the bearing structure. In addition, this device can synchronously control the opening and closing of all hooks with a single movement of the turntable, making operation simple and ensuring consistent locking, thus improving the efficiency and safety of lifting operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the bearing structure provided in an embodiment of the present invention; Figure 2 This is an exploded structural diagram of the bearing structure provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the bearing structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the large tapered bearing lifting device and the bearing structure provided in the embodiment of the present invention; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 This is a structural schematic diagram of the large tapered bearing lifting device provided in an embodiment of the present invention; Figure 7 yes Figure 6 Enlarged view of point B in the middle; Figure 8 This is an exploded structural diagram of the large tapered bearing lifting device provided in an embodiment of the present invention; Figure 9 This is a sectional view of the large tapered bearing lifting device provided in an embodiment of the present invention; Figure 10 yes Figure 9 Enlarged view of point C in the middle; Figure 11 This is a partial structural diagram of the turntable provided in an embodiment of the present invention; Figure 12 This is a partial structural schematic diagram of the hook and hanger provided in an embodiment of the present invention.

[0018] In the picture: 1. Bearing structure; 11. Inner ring body; 111. Flange; 112. Anti-slip bevel; 12. Bearing roller; 13. Cage; 2. Main structure; 21. Positioning component; 211. Positioning plate; 212. Positioning protrusion; 22. Limiting block; 23. Limiting protrusion; 24. Limiting groove; 3. Locking assembly; 31. Turntable; 311. Drive slot; 311a. First slot segment; 311b. Second slot segment; 311c. Transition slot segment; 312. Limiting waist hole; 313. Operating component; 32. Slider; 321. Drive shaft; 33. Hook; 331. Connecting part; 331a. First pin hole; 331b. Second pin hole; 332. Hook head; 333. Locking slope; 34. Rotating shaft; 35. Pin shaft; 4. Suspended structure. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] See Figures 1 to 3 In the application scenario of this invention, the bearing structure 1 includes an inner ring body 11, a cage 13, and bearing rollers 12. The inner ring body 11 is an annular structure, and its inner circumferential surface is used for mating with a shaft. A flange 111 protrudes radially outward from the outer circumference of the inner ring body 11, forming part of the outer contour of the inner ring body 11. Multiple bearing rollers 12 are arranged along the outer circumference of the inner ring body 11. The cage 13 is disposed between the bearing rollers 12, used to circumferentially space and guide each bearing roller 12, maintain the relative position between the bearing rollers 12, and ensure that the bearing rollers 12 can roll smoothly during the operation of the bearing structure 1.

[0024] See Figures 4 to 9 The large tapered bearing lifting device includes a main structure 2, a locking assembly 3, and a hanging structure 4. Multiple positioning elements 21 are provided on the outer periphery of the main structure 2, allowing the main structure 2 to be coaxially positioned on the upper end face of the inner ring body 11 via the positioning elements 21. The locking assembly 3 includes a turntable 31, a slider 32, and a hook 33. The hook 33 is rotatably connected to the main structure 2, and a slider 32 is rotatably connected to each hook 33. The slider 32 is movably connected to the turntable 31, which is coaxially positioned on the main structure 2. The turntable 31 can rotate around its own axis, simultaneously driving multiple sliders 32 to slide radially along the main structure 2, causing the hook 33 to rotate relative to the main structure 2, thereby locking or disengaging from the retaining edge 111. Multiple hanging structures 4 are arranged at intervals along the circumference of the main structure 2, and are used to connect lifting equipment.

[0025] When the large tapered bearing lifting device proposed in this invention is in operation, it first uses multiple positioning elements 21 set on the outer periphery of the main structure 2 to coaxially and stably position the entire device on the upper end face of the inner ring body 11 of the bearing structure 1, thereby ensuring the alignment accuracy between the main structure 2 and the bearing structure 1. Subsequently, the operator rotates the turntable 31 in the locking assembly 3. Since the turntable 31 is coaxially mounted on the main structure 2 and movably connected to multiple sliders 32, the rotation of the turntable 31 synchronously drives all sliders 32 to slide radially along the main structure 2. Each slider 32 is connected to a hook 33. The radial movement of the slider 32 is converted into the rotational movement of the hook 33 relative to the main structure 2, so that all hooks 33 can rotate and lock simultaneously and smoothly under the flange 111 extending from the outer periphery of the inner ring body 11 of the bearing structure 1, thereby achieving the locking between the main structure 2 and the inner ring body 11. This allows the lifting force to be transmitted to the flange 111 through the hook 33, and further distributed to the entire structure of the inner ring body 11 through the flange 111. This avoids the stress concentration caused by the lifting hole bearing the entire load locally in the traditional method, while maintaining the integrity and mechanical performance of the bearing structure 1. Furthermore, multiple hanging structures 4 arranged at intervals along the circumference of the main structure 2 are used to connect external lifting equipment, allowing the lifting force to be evenly distributed on the main structure 2. The force is then smoothly transmitted to the inner ring body 11 through the locked hooks 33. Thus, during the entire lifting and lowering process, the inner ring body 11 no longer bears direct, localized tensile or compressive stress, effectively reducing the risk of cracks or plastic deformation induced in the inner ring body 11 due to lifting operations, and ensuring the service life and operational reliability of the bearing structure 1. In addition, this device can synchronously control the opening and closing of all hooks 33 with a single action of the turntable 31, which is simple to operate and has good locking consistency, improving the efficiency and safety of lifting operations.

[0026] The working principle and specific structure of this large tapered bearing lifting device will be described in detail below.

[0027] In this embodiment, the main body structure 2 is annular. An inner hole is formed in the middle of the annular main body structure 2, and the overall structure of the main body structure 2 is adapted to the inner ring body 11.

[0028] Once the main structure 2 is accurately coaxially positioned on the upper surface of the inner ring body 11 by the positioning element 21 on its outer periphery, the inner surface of the main structure 2 is flush with the inner surface of the inner ring body 11. This ensures that the lifting device will not form any extra protrusions in the inner hole of the bearing structure 1 after installation, guaranteeing that the components mating with the bearing structure 1 can pass through the inner hole of the main structure 2 during subsequent assembly, thus avoiding assembly interference problems that may be caused by the installation of the lifting device. In addition, the annular main structure 2 is lightweight, effectively controlling the weight of the device while ensuring the required structural rigidity and strength, facilitating manual handling and operation.

[0029] The main structure 2 is usually made of metal materials such as structural steel or alloy steel to ensure that it can withstand the huge load generated when lifting large tapered bearings without deformation or damage.

[0030] It should be noted that the circular main structure 2 design is only a preferred embodiment. Depending on the actual application requirements, such as when a larger load-bearing area or more complex functional modules are needed, the main structure 2 can also be designed in other forms such as a disc, which will not be elaborated here.

[0031] Based on the main structure 2, multiple hanging structures 4 are arranged along the circumference of the main structure 2. Optionally, the hanging structure 4 is at least one of a lifting hole, a hook, or a lifting ring. Specifically, when a lifting hole is used, the lifting hole can be directly machined into the solid part of the main structure 2; when a hook or lifting ring is used, it is fixed to the main structure 2 by welding, bolting, or integral molding. The hanging structure 4 is used to connect with external lifting equipment, such as crane hooks, wire ropes, or shackles.

[0032] Multiple suspension structures 4 are arranged circumferentially on the inner circumferential wall of the main structure 2, allowing the vertical tension applied by the lifting equipment to be closer to the center area of ​​the main structure 2. This reduces the overturning moment that may occur during lifting and helps maintain the stability and balance of the device and bearing during overall lifting. The circumferentially distributed arrangement of multiple suspension structures 4 ensures that the lifting force from the lifting equipment is symmetrically and evenly distributed across the entire circumference of the main structure 2, and then smoothly transmitted to the bearing structure 1 through the main structure 2 and the locking assembly 3.

[0033] In this embodiment, three suspension structures 4 are provided. The three suspension structures 4 are evenly spaced along the circumference of the main structure 2, so that the center angle between two adjacent suspension structures 4 is 120 degrees. This ensures that the lifting force is evenly and symmetrically applied to the main structure 2 during vertical lifting, effectively ensuring that the bearing structure 1 remains horizontal after being removed from the support surface, avoiding tilting or rotation, and improving the stability and safety of the lifting operation.

[0034] It is understood that the number and arrangement of the hanging structures 4 can be adjusted according to the size and weight distribution of the bearing structure 1 and the specific hoisting process requirements in actual application. For example, in some other embodiments, two, four, five or more hanging structures 4 can be set and arranged in a circumferentially uniform or non-uniform manner, which will not be elaborated here.

[0035] The main structure 2 can be coaxially positioned on the upper surface of the inner ring body 11 by the positioning member 21. Specifically, the positioning member 21 includes two positioning plates 211 arranged opposite each other. The two positioning plates 211 are fixedly installed at corresponding positions on the outer periphery of the main structure 2, and a certain gap is formed between the two positioning plates 211. The hook 33 is disposed between the two positioning plates 211. The hook 33 spans and connects the two positioning plates 211 through a pin 35, so that the hook 33 can stably rotate around the pin 35 within the space defined by the two positioning plates 211 without unnecessary lateral swaying, ensuring the accuracy of the movement.

[0036] Each positioning plate 211 has a positioning protrusion 212 extending downward from its bottom. When the main body structure 2 is placed on the upper end face of the bearing inner ring body 11, the positioning protrusion 212 can contact and limit the outer peripheral surface of the inner ring body 11, thereby effectively constraining the position of the entire main body structure 2 in the radial direction, thus achieving rapid and accurate coaxial positioning of the main body structure 2 and the inner ring body 11.

[0037] The specific shape of the positioning protrusion 212 can be an arc surface, a slope, or a plane, to adapt to the contour characteristics of the outer peripheral surface of different bearing structures 1, and to ensure stable contact.

[0038] In this embodiment, in addition to coaxially positioning the main structure 2 on the upper end face of the bearing inner ring, the positioning member 21 and the two positioning plates 211 opposite to each other also constitute the installation and movement guide mechanism of the hook member 33. Therefore, the number of positioning members 21 corresponds one-to-one with the number of hook members 33, that is, each hook member 33 is equipped with a set of independent positioning members 21 to ensure that each hook member 33 can obtain radial guidance and lateral support during rotational locking and unlocking.

[0039] It is understood that the design of integrating positioning and guiding functions into the positioning component 21 is a preferred solution in this embodiment. In other feasible embodiments, the positioning function of the main structure 2 and the guiding function of the hook and hanger 33 can also be implemented by different components.

[0040] For example, the positioning element 21 can be designed as a structure independent of the installation position of the hook 33, and is only used for radial positioning of the main structure 2. In this case, the specific form of the positioning element 21 can be multiple separately set positioning blocks, positioning pins, or supports with positioning protrusions 212. The number of these can be set to two, three, or more according to the positioning stability requirements, and they can be arranged symmetrically or evenly along the outer periphery of the main structure 2. Under this design, the hook 33 can be connected to the main structure 2 through other independent mounting seats or bearing seats and can be rotated. In this case, the number of hooks 33 does not need to be the same as the number of positioning elements 21.

[0041] The locking assembly 3 includes a turntable 31, a slider 32, and a hook 33. The hook 33 is rotatably connected to the main structure 2 through the cooperation of a pin 35 and a positioning plate 211. Each hook 33 is rotatably connected to a slider 32. Specifically, the slider 32 is hinged to the hook 33 through a pivot 34. The slider 32 is also movably connected to the turntable 31, which is coaxially positioned above or inside the main structure 2 and can rotate around its own axis.

[0042] Specifically, the hook 33 is generally L-shaped or curved, and includes a connecting part 331 connected to the slider 32. The connecting part 331 has a first pin hole 331a and a second pin hole 331b. The first pin hole 331a is rotatably connected to the slider 32 via a rotating shaft 34, and the second pin hole 331b is rotatably connected to the main structure 2 via a pin shaft 35. One end of the connecting part 331 is provided with a hook head 332 for hooking. The inner contour of the hook head 332 is a concave arc-shaped surface or a composite curved surface that adapts to the lower surface of the bearing retainer 111, so as to ensure that a large area and stable surface contact can be formed with the retainer 111 in the locked state, thereby optimizing stress distribution and avoiding excessive local pressure.

[0043] When the slider 32 is driven to slide radially outward, a pulling force is applied to the connecting part 331. The pulling force drives the connecting part 331 to rotate inward around the pin 35 until the concave curved surface of the hook head 332 tightly fits and hooks the lower edge of the bearing retainer 111, thus completing the locking. In this locked state, the entire lifting weight of the bearing structure 1 is transferred to the hook head 332 through the retainer 111, and then finally distributed to the main structure 2 and the hanging structure 4 via the connecting part 331 and the slider 32.

[0044] Preferably, at least a portion of the bottom surface of the retaining edge 111 is machined to be inclined upward to form an anti-slip bevel 112. Correspondingly, a locking bevel 333 for contacting the bottom surface of the retaining edge 111 is formed at the position of the hook head 332 of the hook member 33, so that the hook head 332 can be smoothly engaged and fitted against the retaining edge 111, while increasing the clamping force of the hook head 332 and the retaining edge 111, thereby improving the locking effect of the locking assembly 3.

[0045] When the operator drives the turntable 31 to rotate, multiple sliders 32 can be driven to slide radially along the main structure 2 simultaneously. Since the sliders 32 and hooks 33 are rotatably connected, the radial linear motion of the sliders 32 will be converted into the rotational motion of the hooks 33 around the axis 34, thereby driving all hooks 33 to rotate synchronously relative to the main structure 2, realizing the action of the hook head 332 rotating inward and locking onto the lower surface of the retaining edge 111, or rotating outward to disengage from the retaining edge 111.

[0046] Specifically, a drive shaft 321 is fixedly mounted on the slider 32. Correspondingly, a drive groove 311 is provided on the turntable 31 for each slider 32, and the drive shaft 321 passes through and is slidably connected within the drive groove 311, with at least a portion of the drive groove 311 extending and bending. When the operator applies torque to rotate the turntable 31 around its own axis, the inner wall of the drive groove 311 will push against the drive shaft 321. Since the trajectory of the drive groove 311 is not a concentric circle, the pushing action of the drive groove 311 will force the drive shaft 321 to displace radially along the turntable 31, thereby driving the slider 32 to slide radially along the main structure 2, thus converting the circular motion of the turntable 31 into the linear motion of the slider 32.

[0047] More specifically, along the radial direction of the main structure 2, the drive groove 311 is divided into a first groove segment 311a and a second groove segment 311b extending circumferentially around the turntable 31. The first groove segment 311a and the second groove segment 311b are connected by a transition groove segment 311c. Along the direction from the first groove segment 311a to the second groove segment 311b, the transition groove segment 311c gradually moves away from the central axis of the turntable 31. When the drive shaft 321 is located in the first groove segment 311a, the hook 33 disengages from the retaining edge 111. When the drive shaft 321 is located in the second groove segment 311b, the hook 33 locks into the retaining edge 111.

[0048] Its working principle is as follows: When the drive shaft 321 is located in the first groove segment 311a of the drive groove 311, since the first groove segment 311a extends circumferentially around the turntable 31, rotating the turntable 31 causes the drive shaft 321 to slide within the first groove segment 311a without generating radial displacement. Correspondingly, the slider 32 remains in the initial position furthest in the radial direction. At this time, the hook 33 hinged to the slider 32 is in an outwardly extended state, and the hook head 332 of the hook 33 is completely disengaged from the space below the inner ring retaining edge 111 of the bearing. At this time, the entire lifting device can be easily placed on or removed from the bearing structure 1, which means that the locking component 3 is in the released state.

[0049] When locking is required, the operator continuously rotates the turntable 31. The drive shaft 321 enters the transition groove 311c from the end of the first groove segment 311a. The design of the transition groove 311c, which gradually moves away from the central axis of the turntable 31, means that the continued rotation of the turntable 31 forces the drive shaft 321 to slide along the inclined surface of the transition groove 311c, thereby generating a radially outward displacement component that pushes the drive shaft 321 and causes the slider 32 to begin sliding radially outward along the main structure 2. The radial movement of the slider 32 pulls the hook 33 through the rotating shaft 34, causing the hook 33 to begin rotating inward around the pin 35.

[0050] When the drive shaft 321 has completely slid through the transition groove 311c and entered the second groove 311b, the slider 32 reaches its outermost radial position, and the hook 33 also rotates synchronously to the locking angle. The hook head 332 of the hook 33 penetrates and hooks the lower surface of the retaining edge 111. At this time, since the second groove 311b is also parallel to the circumference of the turntable 31, when the drive shaft 321 moves in the second groove 311b, the positions of the slider 32 and the hook 33 are locked again, and no further radial changes occur, thus achieving the self-locking effect of the hook 33.

[0051] Throughout the process, the operator only needs to rotate the turntable 31 in one direction to synchronously and smoothly drive all hooks 33 to complete the entire process from release to locking. The operation is simple and the status is clear.

[0052] To prevent the turntable 31 from exceeding its designed stroke due to excessive operation during rotation, which could damage the hook 33 or prevent it from accurately reaching the predetermined position, a limiting waist hole 312 extending circumferentially is provided on the turntable 31. Correspondingly, a limiting block 22 is fixedly provided on the main structure 2. The limiting block 22 is slidably connected within the limiting waist hole 312. When the operator rotates the turntable 31, the limiting waist hole 312 slides relative to the fixed limiting block 22. The hole walls at both ends of the limiting waist hole 312 eventually contact the limiting block 22, thereby physically preventing the turntable 31 from continuing to rotate. This limits the forward and reverse rotation stroke of the turntable 31, ensuring that the drive shaft 321 can only move safely between the first groove segment 311a and the second groove segment 311b of the drive groove 311, avoiding the risk of mechanical interference or failure due to excessive rotation.

[0053] Furthermore, to facilitate operation and clearly indicate the locked state, the turntable 31 is provided with an operating element 313, which can be in the form of a handle, lever, or paddle. On the outer periphery of the main structure 2, corresponding to the movement arc trajectory of the operating element 313, two limiting protrusions 23 are provided. The two limiting protrusions 23 are located on opposite sides of the movement path of the operating element 313. When the operating element 313 rotates to abut against one of the limiting protrusions 23, the corresponding drive shaft 321 reaches the end of the first groove segment 311a of the drive groove 311; when the operating element 313 rotates to abut against the other limiting protrusion 23, the corresponding drive shaft 321 reaches the end of the second groove segment 311b of the drive groove 311. This not only provides the operator with clear and intuitive tactile and visual position feedback, but also, through mechanical blocking, works in conjunction with the limiting waist hole 312 mechanism to double ensure the movement stroke of the turntable 31.

[0054] To ensure the linearity and stability of the slider 32's movement, thereby guaranteeing the synchronization of all hooks 33's actions, a limiting groove 24 extending radially is provided on the main structure 2. The slider 32 is slidably connected to the limiting groove 24 via a guide part of the structure or connection. The limiting groove 24 provides rigid guidance and constraint for the radial sliding of the slider 32, ensuring that the slider 32 moves linearly along the radial direction of the main structure 2 under the drive of the turntable 31, without circumferential offset or overturning.

[0055] The specific method of using the large tapered bearing lifting device provided by this invention is as follows: First, the installation and positioning of the device are carried out. The operator hoists or transports the entire device above the bearing structure 1 to be hoisted. The main structure 2 is roughly aligned with the upper surface of the inner ring body 11 of the bearing structure 1, and then slowly lowered. During this process, the positioning protrusions 212 extending downwards from the bottom of each positioning element 21 on the outer periphery of the main structure 2 gradually approach and eventually contact the outer peripheral surface of the bearing inner ring body 11. By adjusting the position of the main structure 2, the inner surfaces of all positioning protrusions 212 are made to fit against the outer peripheral surface of the inner ring body 11, thereby coaxially positioning the main structure 2 on the upper surface of the inner ring body 11. At this point, the inner surface of the main structure 2 is flush with the inner surface of the inner ring body 11.

[0056] After the device is positioned, the locking assembly 3 is operated to achieve mechanical locking with the bearing structure 1. At this time, the locking assembly 3 is in the released state, that is, the operating member 313 on the turntable 31 is located at one end of its movement path, all hooks 33 are extended outward, and the hook heads 332 of the hooks 33 are away from the space below the flange 111 of the inner ring of the bearing. The operator holds the operating member 313 on the turntable 31 and applies rotational torque in a specified direction (e.g., clockwise). The turntable 31 begins to rotate around its own axis. The drive groove 311 on the turntable 31 pushes the drive shaft 321, which is slidably connected therein, through the inner wall. Since the drive groove 311 includes a parallel first groove segment 311a, during the initial rotation, the drive shaft 321 slides in the first groove segment 311a, the slider 32 and the hooks 33 remain in the same position, and the device remains in the released state.

[0057] When the operating component 313 rotates at a certain angle, the drive shaft 321 slides to the end of the first groove segment 311a of the drive groove 311 and enters the inclined transition groove segment 311c. The continued rotation of the turntable 31 will force the drive shaft 321 to produce a radially outward displacement along the transition groove segment 311c, and transmit it to the corresponding slider 32 through the drive shaft 321. Since the slider 32 is slidably connected in the radial limiting groove 24 on the main body structure 2, the slider 32 is guided and slides linearly outward along the radial direction of the main body structure 2. Each slider 32 is hinged to the connecting part 331 of the corresponding hook 33 through the rotating shaft 34. The radially outward movement of the slider 32 pulls the hook 33, causing the hook 33 to rotate inward (i.e., towards the center of the bearing structure 1) around the pin 35 connected to the main body structure 2.

[0058] When the operating component 313 rotates to the other end of its movement path, the drive shaft 321 has completely slid through the transition groove section 311c and entered the second groove section 311b of the drive groove 311. At this time, all sliders 32 reach the outermost locking position in the radial direction, and all hooks 33 also rotate synchronously to the locking working angle. The hook head 332 of the hook 33 rotates inward and extends into the underside of the bearing inner ring retaining edge 111. The locking inclined surface 333 of the hook head 332 will fit tightly with the anti-slip inclined surface 112 of the retaining edge 111, forming a wedge-tight fit, achieving a reliable lock that tightens as it is pulled. The engagement between the limiting waist hole 312 on the turntable 31 and the upper limit block 22 of the main structure 2, as well as the engagement between the operating component 313 and the two limiting protrusions 23, together ensure the accuracy and stability of the end position of the turntable 31's rotation stroke, preventing over-rotation. At this time, the lifting device and the bearing inner ring are firmly locked through the hook connection between the hook 33 and the retaining edge 111.

[0059] Next, the lifting operation begins. The operator connects the external lifting equipment to multiple circumferentially distributed hanging structures 4 on the inner wall of the main structure 2 using wire ropes, shackles, and other connecting components. During connection, it should be ensured that the forces on the multiple hanging points are balanced. The lifting equipment is operated slowly, applying a vertically upward lifting force. The lifting force is transmitted to the main structure 2 through the hanging structures 4, and then to the bearing structure 1 through the locked locking components 3. Because the hooks 33 are circumferentially distributed and fully contact the flanges 111, the load is evenly distributed across the entire structure of the inner ring body 11, completely avoiding localized stress concentration. The bearing structure 1 is smoothly lifted off the support surface and can be transported to the installation position in a horizontal position.

[0060] Upon reaching the installation position, the bearing structure 1 is lowered and installed. The lifting equipment is used to slowly lower the bearing structure 1 to the predetermined installation position. Once the bearing structure 1 is in place and stably supported, the device locking mechanism can be released. The operator rotates the operating component 313 on the turntable 31 in the opposite direction (e.g., counterclockwise). The turntable 31 reverses direction, and the drive shaft 321 slides from the second groove section 311b of the drive groove 311 through the transition groove section 311c back to the first groove section 311a. The slider 32 is driven to slide radially inward, thereby pushing the hook 33 to rotate inward around its axis 34 until the hook head 332 is completely disengaged from below the retaining edge 111, and the lifting device returns to the released state. Finally, the entire lifting device is removed from the bearing structure 1, and the lifting operation is completed.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A large tapered bearing lifting device for lifting and lowering a bearing structure (1), the bearing structure (1) comprising an inner ring body (11), wherein a retaining edge (111) protrudes outward from the outer periphery of the inner ring body (11), characterized in that, The large tapered bearing lifting device includes: The main structure (2) has multiple positioning elements (21) on its outer periphery. The main structure (2) can be coaxially positioned on the upper surface of the inner ring body (11) through the positioning elements (21). The locking component (3) includes a turntable (31), a slider (32), and a hook (33). The turntable (31) is coaxially disposed on the main structure (2). The hook (33) is rotatably connected to the main structure (2). Each hook (33) is rotatably connected to a slider (32). The slider (32) is movably connected to the turntable (31). The turntable (31) can rotate around its own axis and drive multiple sliders (32) to slide radially along the main structure (2), thereby causing the hook (33) to rotate relative to the main structure (2) to lock or disengage from the stop (111). Multiple hanging structures (4) are arranged at intervals along the circumference of the main structure (2), and the hanging structures (4) are used to connect lifting equipment.

2. The large tapered bearing lifting device according to claim 1, characterized in that, A drive shaft (321) is provided on the slider (32), and a drive groove (311) is opened on the turntable (31) corresponding to each slider (32). The drive shaft (321) passes through and is slidably connected to the drive groove (311), and at least part of the drive groove (311) is bent and extended. When the turntable (31) rotates around its own axis, the inner wall of the drive groove (311) can push the drive shaft (321) to move radially along the turntable (31), thereby driving the slider (32) to slide radially along the main structure (2).

3. The large tapered bearing lifting device according to claim 2, characterized in that, Along the radial direction of the main structure (2), the drive groove (311) is divided into a first groove segment (311a) and a second groove segment (311b) extending circumferentially around the turntable (31). The first groove segment (311a) and the second groove segment (311b) are connected by a transition groove segment (311c). Along the direction from the first groove segment (311a) to the second groove segment (311b), the transition groove segment (311c) gradually moves away from the central axis of the turntable (31). When the drive shaft (321) is located in the first groove segment (311a), the hook (33) disengages from the stop (111). When the drive shaft (321) is located in the second groove segment (311b), the hook (33) locks into the stop (111).

4. The large tapered bearing lifting device according to claim 1, characterized in that, The turntable (31) has a circumferentially extending limiting waist hole (312) and the main structure (2) is provided with a limiting block (22). The limiting block (22) is slidably connected in the limiting waist hole (312) to limit the rotation stroke of the turntable (31).

5. The large tapered bearing lifting device according to claim 1, characterized in that, The turntable (31) is provided with an operating component (313), and the outer periphery of the main structure (2) is provided with two limiting protrusions (23). The two limiting protrusions (23) are located at both ends of the movement trajectory of the operating component (313) to limit the movement path of the operating component (313).

6. The large tapered bearing lifting device according to claim 1, characterized in that, The main structure (2) has a limiting groove (24) extending radially thereon, and the slider (32) is at least partially slidably connected to the limiting groove (24).

7. The large tapered bearing lifting device according to claim 1, characterized in that, At least a portion of the bottom surface of the guard (111) is inclined upward to form an anti-slip bevel (112), and the hook (33) is provided with a locking bevel (333) corresponding to the anti-slip bevel (112).

8. The large tapered bearing lifting device according to claim 1, characterized in that, The positioning element (21) includes two positioning plates (211) arranged opposite to each other. The hook (33) is disposed between the two positioning plates (211). The bottom of the positioning plate (211) has a positioning protrusion (212). The positioning protrusion (212) can be positioned on the outer circumferential surface of the inner ring body (11).

9. The large tapered bearing lifting device according to any one of claims 1-8, characterized in that, The main structure (2) is in the shape of a ring, and the inner surface of the main structure (2) is flush with the inner surface of the inner ring body (11).

10. The large tapered bearing lifting device according to claim 9, characterized in that, The hanging structure (4) is at least one of a hanging hole, a hook or a ring, and multiple hanging structures (4) are arranged at intervals on the inner peripheral wall of the main structure (2).

Images