High-efficiency integral hoisting device for large annular part and use method

Abstract

The invention discloses an efficient overall hoisting device for a large annular part and a using method, and belongs to the technical field of large workpiece hoisting equipment. Comprising an upper lifting disc, a middle connecting hollow column, a supporting seat, a lifting inner supporting rod, a lifting inner supporting pressing ring, a curved surface sliding block, a plane sliding block, a driving mechanism and a sling position adjusting assembly. Through the synergistic effect of the umbrella rib type lifting inner supporting mechanism and the adjustable curved surface sliding block, the contact stability is ensured while synchronous lifting of multiple workpieces is achieved, and the technical problems that a traditional lifting appliance is low in efficiency, the surfaces of the workpieces are prone to being damaged, and the vertical machining requirement cannot be met are effectively solved in combination with the segmented combined structure and the sling adjusting mechanism.

Description

Technical Field

[0001] This application belongs to the technical field of large workpiece hoisting equipment, specifically relating to a high-efficiency overall hoisting device for large ring-shaped parts and its usage method. Background Technology

[0002] In the manufacturing of large workpieces, especially large ring-shaped parts (such as the inner ring of large special bearings), the production process involves multiple steps, including rough machining, precision machining, heat treatment, and assembly with the outer ring of the bearing. Because vertical machining offers advantages such as easy disassembly and high efficiency, and vertical hoisting simplifies assembly operations, large ring-shaped parts require multiple vertical lifting and hoisting operations along their axis during the manufacturing process.

[0003] Currently, most hoisting tools use slings, which can typically only hoist one ring-shaped component at a time. Hoisting multiple ring-shaped components together can easily cause surface impact and scratches. Moreover, large ring-shaped components are generally hoisted horizontally, and vertical processing of them requires adjusting the spatial position of the ring-shaped component to be perpendicular to the axis.

[0004] These problems result in low production efficiency for large ring-shaped components, making it difficult to guarantee their stability during hoisting and to achieve rapid and precise unloading. Given the aforementioned shortcomings of existing equipment, there is an urgent need for a new, highly efficient, integrated hoisting device and method for large ring-shaped components to solve these problems. Summary of the Invention

[0005] This application provides a high-efficiency overall hoisting device and method for using large ring-shaped parts, which aims to improve the efficiency of batch hoisting, ensure the stability of workpieces, adapt to the needs of vertical processing, and achieve the advantages of fast and accurate unloading.

[0006] This application provides a high-efficiency integral hoisting device for large ring-shaped parts, the technical solution of which is as follows: an upper hoisting plate, a middle connecting hollow column, a support base, an inner hoisting support rod, an inner hoisting support pressure ring, a curved slider, a flat slider, a drive mechanism, and a sling position adjustment assembly; The upper lifting platform is connected to the support base via a central connecting hollow column; The lifting inner support rod has an umbrella-shaped structure. One end of the rod is connected to the upper lifting plate, the middle connecting hollow column and the support base, and the other end is connected to the lifting inner support pressure ring. The lifting inner support pressure ring is used to press against the inner wall of the large ring-shaped part during the lifting process. The curved slider is arranged on the support base along the circumferential direction, the flat slider cooperates with the curved slider, and the flat slider is connected to the drive mechanism; The driving mechanism is used to drive the planar slider to move, so as to control the position of the curved slider; The sling position adjustment assembly includes a sling position adjustment roller, which is located on the outside of the upper lifting platform.

[0007] Furthermore, the drive mechanism includes a heavy-duty high-thrust telescopic cylinder and a cylinder piston rod stroke control solenoid valve. The cylinder piston rod stroke control solenoid valve is connected to the heavy-duty high-thrust telescopic cylinder, and the piston rod of the heavy-duty high-thrust telescopic cylinder is connected to a planar slider.

[0008] Furthermore, the inner lifting support rod is connected to the inner lifting support pressure ring, the upper lifting plate, the intermediate connecting hollow column and the support seat by a fixed connecting pin; at least three sets of mechanisms composed of the inner lifting support rod and the inner lifting support pressure ring are provided along the circumferential direction of the upper lifting plate, the intermediate connecting hollow column and the support seat.

[0009] Furthermore, the three sets of mechanisms, consisting of lifting inner support rods and lifting inner support pressure rings, are connected in sequence to the hook above the upper lifting platform via unloading helical tension springs.

[0010] Furthermore, the curved slider is evenly arranged on the support base along the circumference, and the bottom is fixed by an internal hexagon screw; the internal hexagon screw is fixed on the support base by a helical compression spring and a spring bracket.

[0011] Furthermore, the sling position adjustment assembly also includes a roller fixing baffle, two hexagon socket screws and a spring washer. The sling position adjustment roller is installed between the roller fixing baffles via a deep groove ball bearing. The outer side of the upper lifting plate is provided with a square groove, and the roller fixing baffle is fixed in the outer square groove of the upper lifting plate by two hexagon socket screws and a spring washer.

[0012] Furthermore, the upper lifting platform, the intermediate connecting hollow column, and the support base are segmented and combined structures, which are connected by internal and external threads and can be adjusted in height; there are multiple intermediate connecting hollow columns, which can be increased or decreased as needed to lift the number of large ring-shaped parts.

[0013] Furthermore, it also includes a heat insulation protection component, which includes two upper cover plates and two unloading guide cone sleeve semi-rings. The two unloading guide cone sleeve semi-rings are symmetrically arranged on the support base. The two upper cover plates are installed on the unloading guide cone sleeve semi-rings by hexagonal screws. The two work together to protect the cylinder structure and avoid the influence of high temperature on the cylinder.

[0014] Furthermore, the heat insulation protection assembly also includes a heat insulation protection layer on the upper cover plate and a heat insulation protection layer on the inner side of the cone sleeve. The heat insulation protection layer on the upper cover plate is disposed on the upper cover plate, and the heat insulation protection layer on the inner side of the cone sleeve is disposed on the inner side of the unloading guide cone sleeve semi-ring.

[0015] The method for using a high-efficiency integral hoisting device for large ring-shaped components includes the following steps: S1. Stack multiple large ring-shaped parts, place the hoisting device in the inner hole of the stacked large ring-shaped parts, use two slings of equal length, clamp the connecting rings at both ends with buckles, hang the sling connecting rings on the hook, and after the slings are stressed during hoisting, they are pressed against the surface of the sling position adjustment roller to facilitate automatic adjustment of the sling position and avoid severe hard contact friction and wear between the slings and the upper lifting platform. S2. Start the drive mechanism to move the planar slider, which in turn drives the curved slider to move; during the lifting process, under the action of tension, the inner support rod of the lifting is pushed outward, so that the inner support pressure ring of the lifting is pressed against the inner wall of the large ring part, thereby fixing the large ring part; S3. Connect the lifting platform by passing the sling through the sling position adjustment roller, and use the sling position adjustment roller to adjust the position and posture during the lifting process, so as to lift the large ring-shaped part to the target position as a whole; S4. After reaching the target position, before the bottom contacts the unloading plane, first pull the unloading spiral tension spring upward to ensure that the lifting inner support rod rotates upward so that the lifting inner support pressure ring is disengaged from the inner wall of the large ring part. Then, use the cylinder piston rod stroke control solenoid valve to control the piston rod of the heavy-duty high-thrust telescopic cylinder to pull the flat slider inward, so that the curved slider loses its sliding restriction. Then, place the bottom of the lifting device on the unloading plane. Under the action of the spiral compression spring and the spring bracket, the curved slider slides up and down to achieve unloading. S5. Pull the hoisting device out of the inner hole of the large annular part to complete the unloading.

[0016] The beneficial effects of this application are: 1. This application provides a high-efficiency integral lifting device for large ring-shaped parts and its usage method. Through the synergistic effect of the umbrella-shaped lifting internal support mechanism and the adjustable curved surface slider, it can achieve synchronous lifting of multiple workpieces while ensuring contact stability. Combined with the segmented combination structure and the sling adjustment mechanism, it effectively solves the technical problems of low efficiency, easy damage to workpiece surface, and inability to adapt to vertical processing requirements of traditional lifting tools. It has the advantages of improving batch lifting efficiency, ensuring workpiece stability, adapting to vertical processing requirements, and achieving rapid and accurate unloading. Attached Figure Description

[0017] For ease of explanation, this application is described in detail below with reference to specific embodiments and accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a top view of the lifting platform in this application; Figure 3 This application Figure 2 A magnified view at point I; Figure 4 This application Figure 1Enlarged view at point II; Figure 5 This application Figure 1 A magnified view at point III; Figure 6 This application Figure 1 A magnified view at point IV; Figure 7 This is a schematic diagram of the curved surface slider of this application; Figure 8 This application Figure 1 A sectional view at point AA; Figure 9 This application Figure 1 A cross-sectional view at point BB.

[0019] In the diagram: 1. Socket head cap screw; 2. Helical compression spring; 3. Spring bracket; 4. Support seat; 5. Curved slider; 6. Flat slider; 7. Fixed connecting pin; 8. Lifting inner support rod; 9. Lifting inner support pressure ring; 10. Unloading helical tension spring; 11. Intermediate connecting hollow column; 12. Upper lifting plate; 13. Socket head cap screw II; 14. Spring washer; 15. Roller fixing baffle; 16. Sling position adjusting roller; 17. Deep groove ball bearing; 18. Unloading guide cone sleeve half ring; 19. Socket head cap screw III; 20. Upper cover plate heat insulation protection layer; 21. Upper cover plate; 22. Cone sleeve inner heat insulation protection layer; 23. Cylinder piston rod stroke control solenoid valve; 24. Heavy-duty high-thrust telescopic cylinder; 25. Large ring component; 26. Sling; 27. Hook.

[0020] In the figure, R1 and R2 indicate that the surface shown is a cylindrical surface. Detailed Implementation

[0021] The following are specific embodiments of this application, described in conjunction with the accompanying drawings, to further illustrate the technical solutions of this application. However, this application is not limited to these embodiments. Specific details, such as particular configurations and components, are provided in the following description merely to aid in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0023] like Figure 1 , Figure 8 and Figure 9The specific embodiment of the high-efficiency integral lifting device for large annular components shown includes an upper lifting platform 12, a central connecting hollow column 11, a support base 4, an inner lifting support rod 8, an inner lifting support pressure ring 9, a curved slider 5, a flat slider 6, a drive mechanism, and a sling position adjustment assembly. The upper lifting platform 12 is connected to the support base 4 via the central connecting hollow column 11. The inner lifting support rod 8 has an umbrella-shaped structure, with one end hinged to the upper lifting platform 12, the central connecting hollow column 11, and the support base 4, and the other end connected to the inner lifting support pressure ring 9. The inner support ring 9 is used to press against the inner wall of the large annular part 25 during hoisting; three curved sliders 5 are arranged on the support base 4 along the circumferential direction; three flat sliders 6 cooperate with the curved sliders 5 and are connected to the drive mechanism; the drive mechanism is used to drive the flat sliders 6 to move in order to control the position of the curved sliders 5; the sling position adjustment assembly includes a sling position adjustment roller 16, which is arranged on the outside of the upper hoisting plate 12.

[0024] Specifically, after the hoisting device is inserted into the inner hole of the large annular component, the drive mechanism pushes the planar slider 6 to move radially, causing the curved slider 5 to generate circumferential displacement, forming multi-point positioning of the bottom of the large annular component. During hoisting, the slings pull up the upper hoisting plate 12, causing the umbrella-shaped inner support rod 8 to unfold outwards, and the pressure ring tightly adheres to the inner wall of the large annular component 25 to form radial constraint. The slings 26 are guided by the outer sling position adjustment rollers 16, which can automatically adjust the position of the hoisting points to compensate for the center of gravity shift. The segmented design of the hollow column 11 connecting the middle of the hoisting device allows for the increase or decrease of the number of columns to adapt to workpiece groups with different stacking heights. During unloading, the drive mechanism retracts the planar slider 6, the helical compression spring 2 pushes the curved slider 5 to reset, and the inner support rod 8 retracts and detaches from the inner wall of the workpiece under the action of the unloading helical tension spring 10.

[0025] Specifically, the sling 26 in this application is preferably a steel wire rope.

[0026] Through the above technical solutions, this application achieves the overall vertical lifting of multiple large ring-shaped parts 25, eliminating relative displacement between workpieces and avoiding surface damage caused by direct contact of the slings 26. The umbrella-shaped support structure automatically forms radial constraints at the moment of lifting, solving the problem of manual pre-tensioning required by traditional lifting tools. The cooperation between the curved slider 5 and the drive mechanism achieves precise positioning of the bottom of the workpiece, ensuring the stability of the vertical posture during lifting. The setting of the sling roller assembly allows the lifting point position to be dynamically adjusted, effectively compensating for the swaying problem caused by the offset of the workpiece's center of gravity.

[0027] In other preferred embodiments, the drive mechanism includes a heavy-duty high-thrust telescopic cylinder 24 and a cylinder piston rod stroke control solenoid valve 23, wherein the cylinder piston rod stroke control solenoid valve 23 is connected to the heavy-duty high-thrust telescopic cylinder 24, and the piston rod of the heavy-duty high-thrust telescopic cylinder 24 is connected to the planar slider 6.

[0028] Specifically, the cylinder piston rod stroke control solenoid valve 23 controls the extension and retraction of the piston rod of the heavy-duty high-thrust telescopic cylinder 24, causing the planar slider 6 to move along a predetermined track, thereby achieving the limiting or canceling of the curved slider 5.

[0029] In other preferred embodiments, the inner lifting support rod 8 is hinged to the inner lifting support pressure ring 9, the upper lifting plate 12, the intermediate connecting hollow column 11 and the support base 4 by a fixed connecting pin 7; at least three sets of mechanisms consisting of the inner lifting support rod 8 and the inner lifting support pressure ring 9 are provided along the circumferential direction of the upper lifting plate 12, the intermediate connecting hollow column 11 and the support base 4.

[0030] Specifically, the inner lifting support rod 8 is hinged to the upper and lower structures via a fixed connecting pin 7, forming a fixed fulcrum and generating an outward expanding support force under lifting load. When at least three support mechanisms are evenly distributed along the circumference, the radial component of each inner lifting support rod 8 forms a uniformly distributed clamping force on the inner wall of the large annular component 25. This avoids angular displacement of the hinged structure under stress and ensures the consistency of the movement trajectory of each inner lifting support rod 8 when it unfolds synchronously. During the lifting process, the umbrella-shaped unfolding action of the inner lifting support rod 8 is uniformly controlled, so that each inner lifting support pressure ring 9 simultaneously contacts the inner wall of the large annular component 25 and forms a self-locking effect.

[0031] In other preferred embodiments, such as Figure 1 and Figure 6 As shown, the three sets of mechanisms, consisting of lifting inner support rods 8 and lifting inner support pressure rings 9, are connected in sequence to the hooks 27 above the upper lifting plate 12 via unloading spiral tension springs 10.

[0032] Specifically, during the unloading phase of the hoisting device, the unloading helical tension spring 10 is pulled upwards. At this time, the contraction force of the unloading helical tension spring 10 is transmitted to the three sets of support mechanisms through the hook 27 structure, forcing the inner support rod 8 of the hoisting device to rotate upwards around the connection point. Since the three sets of support mechanisms are linked by the same spring, the rotation angle of each inner support rod 8 of the hoisting device is controlled synchronously, and the contact pressure between the inner support pressure ring 9 of the hoisting device and the inner wall of the large annular part 25 is evenly released, facilitating disassembly.

[0033] In other preferred embodiments, such as Figure 5 and Figure 7As shown, the curved slider 5 is evenly arranged on the support base 4 along the circumference, and the bottom is fixed by the hexagon socket screw 1; the hexagon socket screw 1 is fixed on the support base 4 by the helical compression spring 2 and the spring bracket 3, and R1 and R2 indicate that the curved surface shown is a cylindrical surface.

[0034] Specifically, the evenly distributed circumference of the curved slider 5 ensures balanced force at each contact point during the hoisting of the ring-shaped part, and the rigid fixation of the hexagonal screw 1 ensures the initial positioning accuracy between the curved slider 5 and the support base 4. The helical compression spring 2 is pre-compressed between the spring bracket 3 and the screw head. During unloading, the drive mechanism retracts the planar slider 6, and the helical compression spring 2 pushes the curved slider 5 to reset, thus facilitating unloading.

[0035] In other preferred embodiments, such as Figure 2-4 As shown, the sling position adjustment assembly also includes a roller fixing baffle 15, a second hexagon socket screw 13, and a spring washer 14. The sling position adjustment roller 16 is installed between the roller fixing baffles 15 via a deep groove ball bearing 17. The outer side of the upper lifting plate 12 is provided with a square groove, the position and number of which correspond to the lifting ring. The roller fixing baffle 15 is fixed in the outer square groove of the upper lifting plate 12 by the second hexagon socket screw 13 and the spring washer 14.

[0036] Specifically, the roller fixing baffle 15 is locked in the outer square groove of the upper lifting plate 12 by the hex socket screw 13 and the spring washer 14, forming a double fixing structure. The sling position adjusting roller 16 is installed between the two roller fixing baffles 15 by a deep groove ball bearing 17, and can rotate freely under the traction force of the sling. When the sling deviates in angle during the lifting process, the sling position adjusting roller 16 automatically adjusts its angle according to the direction of sling movement. At the same time, the mating structure between the roller fixing baffle 15 and the square groove restricts the lateral displacement of the sling position adjusting roller 16. The spring washer 14 continuously provides axial clamping force under the vibration condition of the lifting device to prevent the hex socket screw 13 from loosening due to vibration.

[0037] In other preferred embodiments, the upper lifting platform 12, the intermediate connecting hollow column 11, and the support base 4 are segmented and combined structures, which are connected by internal and external threads and can be adjusted in height; there are multiple intermediate connecting hollow columns 11, which can be increased or decreased as needed to lift the number of large ring-shaped parts 25.

[0038] Specifically, when lifting a small number of or a single large annular component, the number of intermediate connecting hollow columns 11 can be zero, and the upper lifting plate 12 and the support base 4 can be directly connected by threads. When it is necessary to lift multiple stacked large annular components 25, the number of intermediate connecting hollow columns 11 can be increased to extend the overall length of the device, so that the lifting inner support pressure ring 9 can simultaneously press against the inner walls of multiple large annular components 25. The locking mechanism at the threaded connection can prevent axial displacement during lifting.

[0039] In other preferred embodiments, a heat insulation protection component is also included. The heat insulation protection component includes two upper cover plates 21 and two unloading guide cone sleeve semi-rings 18. The two unloading guide cone sleeve semi-rings 18 are symmetrically arranged on the support base 4. The two upper cover plates 21 are installed on the unloading guide cone sleeve semi-rings 18 by hexagon socket screws 19. The two work together to protect the cylinder structure and avoid the influence of high temperature on the cylinder.

[0040] Specifically, the heat insulation protection assembly also includes an upper cover heat insulation protection layer 20 and an inner heat insulation protection layer 22 of the cone sleeve. The upper cover heat insulation protection layer 20 is disposed on the upper cover 21, and the inner heat insulation protection layer 22 of the cone sleeve is disposed inside the unloading guide cone sleeve semi-ring 18.

[0041] Specifically, large annular components reach high temperatures after manufacturing, necessitating the installation of thermal insulation protection components. These components consist of a protective structure comprised of two upper cover plates 21 and two unloading guide cone sleeve semi-rings 18. The thermal insulation protection layer 20 on the upper cover plates and the inner thermal insulation protection layer 22 on the cone sleeves work together to form a continuous thermal barrier layer at the contact surface between the guide cone sleeves and the high-temperature annular component, thus blocking the axial heat conduction path.

[0042] The method for using a high-efficiency integral hoisting device for large ring-shaped components includes the following steps: S1. Stack multiple large ring-shaped parts 25, place the hoisting device in the inner hole of the stacked large ring-shaped parts 25, use two slings 26 of equal length, clamp the connecting rings at both ends with buckles, hang the connecting rings of the slings 26 on the hooks 27, and after the slings are stressed during hoisting, they are pressed against the surface of the sling position adjustment rollers 16 to facilitate automatic adjustment of the sling position and avoid severe hard contact friction and wear between the slings and the upper lifting plate 12; S2. Start the drive mechanism to move the planar slider 6, which in turn drives the curved slider 5 to move. During the lifting process, under the action of tension, the inner support rod 8 of the lifting is pushed outward, so that the inner support pressure ring 9 of the lifting is pressed against the inner wall of the large annular part 25, thereby fixing the large annular part 25. S3. The lifting platform 12 is connected by passing the sling 26 through the sling position adjustment roller 16. The position and posture of the large ring-shaped part 25 are adjusted by using the sling position adjustment roller 12 to lift the entire part to the target position. S4. After reaching the target position, before the bottom contacts the unloading plane, first pull the unloading spiral tension spring 10 upward to ensure that the lifting inner support rod 8 rotates upward so that the lifting inner support pressure ring 9 is disengaged from the inner wall of the large ring part 25. Then, use the cylinder piston rod stroke control solenoid valve 23 to control the piston rod of the heavy-duty high-thrust telescopic cylinder 24 to pull the flat slider 6 inward, so that the curved slider 5 loses its sliding restriction. Then, place the bottom of the lifting device on the unloading plane. Under the action of the spiral compression spring 2 and the spring bracket 3, the curved slider 5 slides up and down to achieve unloading. S5. Pull the hoisting device out of the inner hole of the large annular part to complete the unloading.

[0043] Specifically, the stacked large annular components 25 are coaxially positioned with the lifting device through their inner holes. The slings 26 pass through the sling position adjustment rollers 16 connected to the lifting platform 12 and connect to the lifting ring, eliminating the risk of uneven load during lifting. The sling position adjustment rollers 16 are the same in position and number as the lifting rings, totaling four. After the drive mechanism is activated, the flat slider 6 drives the curved slider 5 to move synchronously along the circumference. During lifting, the umbrella-shaped lifting inner support rod expands under tension as the lifting device is raised, and the lifting inner support pressure ring 9 forms a surface contact clamp with the inner wall of the large annular component 25. During transport, the sling position adjustment rollers 16 correct the tilt angle of the lifting device in real time through rolling guidance, preventing collisions between the large annular components 25. During unloading, the lifting action of the unloading helical tension spring 10 releases the radial constraint of the lifting inner support rod 8, the heavy-duty high-thrust telescopic cylinder 24 retracts, causing the flat slider 6 to disengage from its limit position, and the helical compression spring 2 pushes the curved slider 5 back to its original position, automatically separating the bottom of the lifting device from the large annular component.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] Those skilled in the art to which this application pertains may make various modifications or additions to the specific embodiments described, or adopt similar methods to replace them, without departing from the spirit of this application or exceeding the scope defined by the appended claims.

Claims

1. A high-efficiency integral hoisting device for large ring-shaped components, characterized in that, Includes an upper lifting platform (12), a central connecting hollow column (11), a support base (4), an inner lifting support rod (8), an inner lifting support pressure ring (9), a curved slider (5), a flat slider (6), a drive mechanism, and a sling position adjustment assembly; The upper lifting plate (12) is connected to the support base (4) through the intermediate connecting hollow column (11); The lifting inner support rod (8) is an umbrella-shaped structure. One end of it is connected to the upper lifting plate (12), the middle connecting hollow column (11) and the support seat (4), and the other end is connected to the lifting inner support pressure ring (9). The lifting inner support pressure ring (9) is used to press against the inner wall of the large ring part (25) during the lifting process. The curved slider (5) is arranged on the support base (4) along the circumferential direction, the flat slider (6) cooperates with the curved slider (5), and the flat slider (6) is connected to the drive mechanism; The driving mechanism is used to drive the planar slider (6) to move in order to control the position of the curved slider (5); The sling position adjustment assembly includes a sling position adjustment roller (16), which is located on the outside of the upper lifting plate (12).

2. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 1, characterized in that, The drive mechanism includes a heavy-duty high-thrust telescopic cylinder (24) and a cylinder piston rod stroke control solenoid valve (23). The cylinder piston rod stroke control solenoid valve (23) is connected to the heavy-duty high-thrust telescopic cylinder (24), and the piston rod of the heavy-duty high-thrust telescopic cylinder (24) is connected to the planar slider (6).

3. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 1, characterized in that, The inner lifting support rod (8) is connected to the inner lifting support pressure ring (9), the upper lifting plate (12), the intermediate connecting hollow column (11) and the support seat (4) by a fixed connecting pin (7); at least 3 sets of mechanisms composed of the inner lifting support rod (8) and the inner lifting support pressure ring (9) are provided along the circumference of the upper lifting plate (12), the intermediate connecting hollow column (11) and the support seat (4).

4. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 3, characterized in that, The three sets of mechanisms, consisting of lifting inner support rods (8) and lifting inner support pressure rings (9) respectively, are connected in sequence to the hooks (27) above the upper lifting plate (12) via unloading spiral tension springs (10).

5. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 1, characterized in that, The curved slider (5) is evenly arranged on the support base (4) along the circumference and the bottom is fixed by the internal hexagon screw (1); the internal hexagon screw (1) is fixed on the support base (4) by the spiral compression spring (2) and the spring bracket (3).

6. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 1, characterized in that, The sling position adjustment assembly also includes a roller fixing baffle (15), a second hexagonal screw (13), and a spring washer (14). The sling position adjustment roller (16) is installed between the roller fixing baffles (15) via a deep groove ball bearing (17). The outer side of the upper lifting plate (12) is provided with a square groove. The roller fixing baffle (15) is fixed in the outer square groove of the upper lifting plate (12) via the second hexagonal screw (13) and the spring washer (14).

7. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 1, characterized in that, The upper lifting platform (12), the intermediate connecting hollow column (11), and the support base (4) are segmented and combined structures. The three are connected by internal and external threads and can be adjusted in height. There are multiple intermediate connecting hollow columns (11), which can be increased or decreased according to the number of large ring parts (25) to be lifted as needed.

8. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 1, characterized in that, It also includes a heat insulation protection component, which includes two upper cover plates (21) and two unloading guide cone sleeve semi-rings (18). The two unloading guide cone sleeve semi-rings (18) are symmetrically arranged on the support base (4). The two upper cover plates (21) are installed on the unloading guide cone sleeve semi-rings (18) by internal hexagonal screws (19). The two work together to protect the cylinder structure and avoid the influence of high temperature on the cylinder.

9. The high-efficiency integral hoisting device for large ring-shaped parts according to claim 8, characterized in that, The heat insulation protection assembly also includes an upper cover heat insulation protection layer (20) and a cone sleeve inner heat insulation protection layer (22). The upper cover heat insulation protection layer (20) is disposed on the upper cover (21), and the cone sleeve inner heat insulation protection layer (22) is disposed inside the unloading guide cone sleeve semi-ring (18).

10. The method of using the high-efficiency integral hoisting device for large ring-shaped parts according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Stack multiple large ring parts (25) and place the hoisting device in the inner hole of the stacked large ring parts (25). Use two slings (26) of equal length, and use buckles to clamp the connecting rings at both ends. Hang the connecting rings of the slings (26) on the hook (27). During the hoisting process, the slings are pressed against the surface of the sling position adjustment roller (16) after being stressed, so that the sling position can be automatically adjusted, and the slings can avoid serious hard contact friction and wear between the slings and the upper lifting plate (12). S2. Start the drive mechanism to move the planar slider (6) and drive the curved slider (5) to move; during the lifting process, under the action of tension, the lifting inner support rod (8) is pushed outward, so that the lifting inner support pressure ring (9) is pressed against the inner wall of the large ring part (25) to achieve the fixation of the large ring part (25); S3. Adjust the sling (26) by using the sling position adjustment roller (16) to adjust the sling (26) and thus adjust the position and posture during the hoisting process, and hoist the large ring part (25) to the target position as a whole; S4. After reaching the target position, before the bottom contacts the unloading plane, first pull the unloading spiral tension spring (10) upward to ensure that the lifting inner support rod (8) rotates upward so that the lifting inner support pressure ring (9) is disengaged from the inner wall of the large ring part (25). Then, use the cylinder piston rod stroke control solenoid valve (23) to control the piston rod of the heavy-duty high-thrust telescopic cylinder (24) to pull the flat slider (6) inward so that the curved slider (6) loses its sliding restriction. Then, place the bottom of the lifting device on the unloading plane. Under the action of the spiral compression spring (2) and the spring bracket (3), the curved slider (6) slides up and down to achieve unloading. S5. Pull the hoisting device out of the inner hole of the large annular part (25) to complete the unloading.

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