Hoisting device for workpieces with complex curved surfaces

Abstract

The invention discloses a complex curved-surface workpiece hoisting device which comprises a hoop assembly, a lifting mechanism, a lifting mechanism and a lifting mechanism, the hoop assembly comprises a first assembling unit of a symmetrical structure, a second assembling unit of a symmetrical structure and a fixed clamping assembly arranged on an inner ring of the hoop assembly, and the outer wall of the first assembling unit is symmetrically provided with lifting structures; a movable clamping assembly is arranged in the middle of the inner wall of the second assembly and comprises a floating base used for moving along the center line of the hoop assembly. The connecting assemblies are used for connecting the adjacent hoop assemblies; and the pressing mechanism is arranged on the hoop assembly, is in driving connection with the movable clamping assembly, is used for driving the movable clamping assembly to move along the center line of the second assembly so as to press the workpiece, and is also used for detecting the clamping force of the floating seat and adjusting the clamping force to a target value or a target range.

Description

Technical Field

[0001] The invention relates to the technical field of complex curved surface workpiece hoisting and transportation, and in particular to a complex curved surface workpiece hoisting device. Background Art

[0002] During the machining and product debugging and testing of complex curved surface workpieces, the parts to be processed need to be positioned and locked, and transferred from one station to another for processing. Positioning is used to ensure the accuracy of machining and debugging, and locking can prevent the parts from flying out during machining or testing, and falling off during hoisting and transportation, thereby preventing accidents.

[0003] The hoisting and transfer devices in the prior art have strong versatility for thick-walled and regularly shaped workpieces, but have poor clamping and positioning effects for thin-walled workpieces with special-shaped curved surface structures. Some special workpieces cannot be clamped, hoisted and transferred, and their versatility is poor. For example, Patent No.: CN201911276716.3 discloses a clamping device for workpieces with special-shaped curved surface structures, which can adapt to the shape changes of the workpiece within a certain range, but the workpiece needs to enter the clamping device from the end. If the cross-sectional size of the workpiece changes greatly or the end size is large, this type of clamping device cannot be used.

[0004] On the other hand, if a complex curved workpiece has a thin-wall structure, the forces at different clamping positions are usually different due to different clamping shapes, making it difficult to adjust the appropriate clamping force, which can easily cause deformation of the workpiece during lifting. Summary of the invention

[0005] The present invention provides a lifting device for complex curved surface workpieces to solve the technical problems that the lifting devices in the prior art cannot adapt to the clamping of complex curved surface workpieces and that complex curved surface thin-walled workpieces are easily deformed due to uncontrollable clamping force during lifting.

[0006] According to one aspect of the present invention, there is provided a lifting device for a workpiece with a complex curved surface, comprising:

[0007] A clamp assembly, comprising a first assembly, a second assembly and a fixed clamp assembly arranged on the inner ring of the clamp assembly, wherein the outer wall of the first assembly is symmetrically provided with a lifting structure, and the middle part of the inner wall of the second assembly is provided with a movable clamp assembly, and the movable clamp assembly includes a floating seat for moving along the center line of the clamp assembly;

[0008] A connecting component, used to connect adjacent clamping components;

[0009] The clamping mechanism is arranged on the clamping hoop assembly and is drivingly connected to the movable clamping assembly, and is used to drive the movable clamping component to move along the center line of the second assembly to clamp the workpiece, and is also used to detect the clamping force of the floating seat and adjust the clamping force to a target value or a target range.

[0010] As a further improvement of the above technical solution, movable joints are respectively provided at both ends of the first assembly and the second assembly, and the clamp assembly includes a fixing member provided on the movable joint for connecting the first assembly and the second assembly.

[0011] As a further improvement of the above technical solution, the fixing member is a first rotating shaft for passing through the movable joint, and through holes for setting limit pins are radially opened at both ends of the first rotating shaft.

[0012] As a further improvement of the above technical solution, the movable clamping assembly also includes a clamping rod arranged on the back side of the floating seat, the front side of the floating seat serves as a clamping surface and is provided with a clamping structure, the clamping rod is used to pass through the middle position of the inner wall of the second assembly along the center line of the clamp assembly, and the clamping mechanism is connected to the clamping rod.

[0013] As a further improvement of the above technical solution, the lifting device includes a controller, the clamping mechanism driver, a telescopic driving assembly arranged at the output end of the driver, and a pressure detection unit arranged on the clamping surface of the floating seat. The driver is used to drive the clamping rod to move along the center line of the clamp assembly through the driving assembly, and the controller is used to control the start and stop of the driver according to the target clamping pressure and the feedback signal of the pressure detection unit.

[0014] As a further improvement of the above technical solution, the telescopic drive assembly includes a sleeve for connecting to the output end of the driver and a screw sleeve threadedly connected to the sleeve, an elastic member is arranged between the sleeve and the screw sleeve, the end of the clamping rod and the end of the screw sleeve are respectively matched with circumferential limiting structures, and the driver is used to drive the sleeve to rotate to drive the screw sleeve to move axially, thereby pushing the drive rod to move so that the floating seat is pressed against the workpiece.

[0015] As a further improvement of the above technical solution, the fixed clamping assembly includes a fixed seat and a movable jaw, the fixed seat is provided with a mounting groove for embedding the movable jaw, the fixed seat is passed through a second rotating shaft and the second rotating shaft is passed through the middle of the movable jaw, and the outer wall of the movable jaw has a preset interval with the mounting groove.

[0016] As a further improvement of the above technical solution, the connecting assembly includes a connecting rod and a connecting head arranged at the end of the connecting rod, and the clamp assembly is symmetrically provided with a plurality of connecting structures for matching with the connecting head.

[0017] As a further improvement of the above technical solution, the hoisting device includes a mounting frame that matches the length of the connecting assembly, and the clamping mechanism is respectively provided at both ends of the mounting frame.

[0018] As a further improvement of the above technical solution, the first assembly and the second assembly are both arc-shaped parts, and a flat structure is respectively arranged in the middle of the outer wall of the first assembly and the middle of the outer wall of the second assembly, and / or the outer wall of the second assembly is symmetrically distributed with support feet of preset length.

[0019] The present invention has the following beneficial effects:

[0020] Before using the hoisting device to hoist a workpiece with a complex curved surface, the various components are separated from each other, and the first assembly and the second assembly in the clamp assembly are combined at a preset position on the workpiece so that the workpiece is located in the inner ring of the combined clamp assembly, which effectively solves the problem that the workpiece with a complex curved surface is difficult to pass through the end portion and is arranged in the hoisting device. After the first assembly and the second assembly are combined and connected, the fixed clamping assembly and the movable clamping assembly are cooperated to clamp the outer wall surface of the workpiece, and the above steps are repeated to install other clamp assemblies to ensure that there are at least two stress positions on the workpiece during hoisting, to ensure the stability of subsequent hoisting, and the connecting assembly connects the adjacent clamp assemblies to ensure the stability of the overall structure and the stability of subsequent hoisting; the clamping mechanism controls The floating seat presses the workpiece and adjusts the clamping force of the workpiece through detection, so that the clamping force reaches the preset value or is within the target range, ensuring the clamping effect while avoiding deformation of workpieces such as thin-walled structures, ensuring that different clamping hoist components provide suitable clamping force and stable clamping at different clamping positions of the workpiece, and ensuring the lifting and transportation effect and stability; after the assembly is completed, the lifting equipment can be connected to the lifting structure for lifting; this lifting device is a combined assembled structure, which can be assembled to the workpiece for clamping without performing any processing on the workpiece such as station conversion. After clamping, it is lifted and transported by the lifting equipment, and has high adaptability to complex use environments and workpiece structures.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of a hoisting device according to a preferred embodiment of the present invention;

[0024] Figure 2 It is a structural schematic diagram of a clamp assembly according to a preferred embodiment of the present invention;

[0025] Figure 3 is a schematic structural diagram of a connection assembly according to a preferred embodiment of the present invention;

[0026] Figure 4 is a structural schematic diagram of a clamping mechanism in a preferred embodiment of the present invention;

[0027] Figure 5 is a structural schematic diagram of a fixed clamping assembly according to a preferred embodiment of the present invention;

[0028] Figure 6 is a structural schematic diagram of a movable clamping assembly according to a preferred embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the telescopic drive assembly of the preferred embodiment of the present invention.

[0030] Legend:

[0031] 1. Clamp assembly 11. First assembly 12. Second assembly 13. First rotating shaft 14. Limit pin 15. Lifting structure 16. Fixed clamping assembly 161. Fixed seat 162. Movable jaw 163. Second rotating shaft 17. Movable clamping assembly 171. Floating seat 172. Clamping rod 1721. Polygonal protrusion 173. Guide rod 18. Connecting structure 2. Connecting assembly 21. Connecting rod 22. Connecting head 3. Clamping mechanism 31. Driver 32. Pressure detection unit 33. Bushing 34. Elastic member 35. Screw sleeve 351. Polygonal groove 4. Controller 5. Mounting frame. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0033] Figure 1 It is a structural schematic diagram of a hoisting device according to a preferred embodiment of the present invention; Figure 2 It is a structural schematic diagram of a clamp assembly according to a preferred embodiment of the present invention; Figure 3 is a schematic structural diagram of a connection assembly according to a preferred embodiment of the present invention; Figure 4is a structural schematic diagram of a clamping mechanism in a preferred embodiment of the present invention; Figure 5 is a structural schematic diagram of a fixed clamping assembly according to a preferred embodiment of the present invention; Figure 6 is a structural schematic diagram of a movable clamping assembly according to a preferred embodiment of the present invention; Figure 7 It is a structural schematic diagram of a telescopic drive assembly according to a preferred embodiment of the present invention.

[0034] like Figures 1 to 7 As shown, the complex curved surface workpiece lifting device of this embodiment includes:

[0035] The clamp assembly 1 comprises a first assembly 11 of symmetrical structure, a second assembly 12 of symmetrical structure and a fixed clamp assembly 16 arranged on the inner ring of the clamp assembly 1, the outer wall of the first assembly 11 is symmetrically provided with a lifting structure 15, and the middle position of the inner wall of the second assembly 12 is provided with a movable clamp assembly 17, and the movable clamp assembly 17 comprises a floating seat 171 for moving along the center line of the clamp assembly 1;

[0036] A connecting component 2, used for connecting adjacent clamping components 1;

[0037] The clamping mechanism 3 is arranged on the clamping hoop assembly 1 and is connected to the movable clamping assembly 17 for driving the movable clamping member to move along the center line of the second assembly 12 to clamp the workpiece, and is also used to detect the clamping force of the floating seat 171 and adjust the clamping force to a target value or a target range.

[0038] It should be noted that the hoop assembly 1 of the present embodiment is a circular ring, and the first assembly 11 and the second assembly are both arc-shaped members, for example, and the two are combined into a circular hoop. In other embodiments, the hoop assembly 1 can also be a symmetrical shape such as a rectangular ring, an elliptical ring, or an asymmetrical special-shaped structure, and there is no restriction on it; when clamping, the first assembly 11 is located at the bottom and the second assembly 12 is located at the top, and the curvature of the first assembly 11 should be greater than the curvature of the second assembly 12, so that the lifting structure 15 can be arranged in the middle of both sides of the hoop assembly 1 to ensure the lifting force effect and ensure the lifting stability; the fixed clamping assembly 16 and the movable clamping assembly 17 are evenly distributed on the inner ring of the hoop assembly 1, and the number of the fixed clamping assembly 16 is not less than two groups to ensure at least three-point support and stable clamping;

[0039] It should be understood that the lifting structure 15 may be a lifting lug or a lifting ring provided on the outer wall of the first assembly 11 to be connected with a lifting hook, a lifting rope, etc. of a lifting device;

[0040] It can be understood that before using the present lifting device to lift a workpiece with a complex curved surface, the various components are separated from each other, and the first assembly 11 and the second assembly 12 in the clamp assembly 1 are combined at a preset position on the workpiece so that the workpiece is located in the inner ring of the combined clamp assembly 1, which effectively solves the problem that the workpiece with a complex curved surface is difficult to pass through the end portion into the lifting device. After the first assembly 11 and the second assembly 12 are combined and connected, the fixed clamping assembly 16 and the movable clamping assembly 17 are cooperated to clamp the outer wall surface of the workpiece. Repeat the above steps to install other clamp assemblies 1 to ensure that there are at least two stress positions on the workpiece during lifting, to ensure the stability of subsequent lifting, and the connecting assembly 2 connects the adjacent clamp assemblies 1 to ensure the stability of the overall structure and the stability of subsequent lifting. ; The clamping mechanism 3 controls the floating seat 171 to clamp the workpiece and adjust the clamping force of the workpiece through detection, so that the clamping force reaches the preset value or is within the target range, ensuring the clamping effect while avoiding deformation of workpieces such as thin-walled structures, ensuring that different clamp assemblies 1 provide suitable clamping force and stable clamping at different clamping positions of the workpiece, and ensuring the lifting and transportation effect and stability; after the assembly is completed, the lifting equipment can be connected to the lifting structure 15 for lifting; this lifting device is a combined assembled structure, which can be assembled to the workpiece for clamping without performing any processing such as station conversion on the workpiece. After clamping, it is lifted and transported by the lifting equipment, and has high adaptability to complex use environments and workpiece structures.

[0041] It should be noted that, in some embodiments, for workpieces with regular shapes or small cross-sectional differences, the ends of the workpieces can be directly inserted into the lifting device for lifting, thereby avoiding disassembly and assembly operations and reducing labor intensity.

[0042] In some embodiments, a flat structure is respectively provided at the middle of the outer wall of the first assembly 11 and the middle of the outer wall of the second assembly 12, and / or the outer wall of the first assembly 11 is symmetrically provided with support legs of a preset length; wherein the flat structure is processed into a plane, so that the clamp assembly 1 is more balanced and stable when placed on a work surface or the ground, and the support legs are located on both sides of the flat structure of the first assembly 11 for auxiliary support;

[0043] In some embodiments, the connecting assembly 2 includes a connecting rod 21 and a connecting head 22 arranged at the end of the connecting rod 21. A plurality of connecting structures 18 for matching with the connecting head 22 are symmetrically distributed on the clamp assembly 1. The connecting structure 18 can be a hole-type structure, and the connecting head 22 has a threaded hole and is connected by inserting screws. In some embodiments, if three or more sets of clamp assemblies 1 are provided, double-headed screws can be inserted at the connecting structure 18 to realize the sequential connection of multiple sets of clamp assemblies 1.

[0044] In some embodiments, both ends of the first assembly 11 and the second assembly 12 are respectively provided with movable joints, and the hoop assembly 1 includes a fixing member provided at the movable joint, which is used to connect the first assembly 11 and the second assembly 12; the movable joint is preferably a hinge point, that is, both ends of the first assembly 11 and the second assembly 12 are respectively provided with hinge holes, and the fixing member is a first rotating shaft 13 for passing through the hinge hole of the movable joint; by pulling out the fixing member on either side, the second assembly 12 can be rotated based on the movable joint on the other side to realize the opening and closing of the hoop assembly 1, and the workpiece can enter the hoop assembly 1 from one side of the hoop assembly 1 or can be directly passed through the hoop assembly 1;

[0045] In some embodiments, through holes for setting limit pins 14 are radially opened at both ends of the first rotating shaft 13, and the length of the limit pins 14 is greater than the diameter of the hinge hole at the movable joint, so as to axially limit the first rotating shaft 13 and maintain a locked state;

[0046] Furthermore, since the limit pin 14 and the first rotating shaft 13 are structures that are frequently disassembled and assembled during use, if an embedded limit pin 14 is used, the disassembly operation will be labor-intensive. In one embodiment, the structure of the limit pin 14 can be set to a structure in which the body diameter is smaller than the through hole and the length is much larger than the diameter of the first rotating shaft 13, and a limit head with a diameter larger than the through hole is set at its first end, so that the limit pin 14 can remain in a vertical state under the action of gravity at its second end to avoid detachment from the rotating shaft. It is easier to pull out the limit pin 14 during disassembly, reducing labor intensity.

[0047] In some embodiments, the movable clamping assembly 17 includes a floating seat 171 and a clamping rod 172 arranged on the back of the floating seat 171. The front of the floating seat 171 serves as a clamping surface and is provided with a clamping structure. The clamping rod 172 is used to pass through the middle position of the inner wall of the second assembly 12 along the center line of the clamp assembly 1 (in this embodiment, the radial line of the clamp assembly 1). The clamping mechanism 3 is connected to the clamping rod 172. It can be understood that the clamping structure is a V-shaped structure, which can make two-point contact with the workpiece and has a centering and alignment function to ensure the clamping effect; guide rods 173 passing through the clamp assembly 1 are also provided on both sides of the clamping rod 172. The guide rods 173 are parallel to the clamping rod 172, so that the floating seat 171 is more stable when moving, avoids deflection, and ensures force.

[0048] In some embodiments, the lifting device includes a controller 4, a clamping mechanism 3 driver 31, a telescopic driving assembly arranged at the output end of the driver 31, and a pressure detection unit 32 arranged on the clamping surface of the floating seat 171. The driver 31 is used to drive the clamping rod 172 to move along the center line of the clamp assembly 1 through the driving assembly, and the controller 4 is used to control the start and stop of the driver 31 according to the target clamping pressure and the feedback signal of the pressure detection unit 32; the pressure detection unit 32 can be a pressure sensor of the prior art, and the driving mechanism can use the servo motor of the prior art, then the controller 4 is a servo motor control system, the pressure sensor is electrically connected to the controller 4, the driver 31 performs axial transmission through the telescopic driving assembly to push the floating seat 171 to move for clamping, and when the feedback signal of the pressure sensor controls the stop of the servo motor, it is ensured that the clamping force is within an appropriate range.

[0049] In some embodiments, the telescopic drive assembly includes a sleeve 33 for connecting to the output end of the driver 31 and a screw sleeve 35 threadedly connected to the sleeve 33, an elastic member 34 is arranged between the sleeve 33 and the screw sleeve 35, and the ends of the clamping rod 172 and the ends of the screw sleeve 35 are respectively matched with circumferential limiting structures, and the driver 31 is used to drive the sleeve 33 to rotate to drive the screw sleeve 35 to move axially, thereby pushing the driving rod to move so that the floating seat 171 is pressed against the workpiece; specifically, the rotation of the screw sleeve 35 is limited under the action of the circumferential limiting structure, that is, when the output end of the driver 31 drives the sleeve 33 to rotate, the screw sleeve 35 can be driven to move axially under the action of the thread, and at the same time, the elastic member 34 provides a certain thrust compensation to improve the clamping effect;

[0050] Among them, the sleeve 33 and the output shaft of the driver 31 are provided with a spline circumferential limit; the circumferential limit structure at the end of the clamping rod 172 can be a polygonal protrusion 1721, and the circumferential limit structure at the end of the screw sleeve 35 can be a polygonal groove 351 matching the circumferential limit structure at the end of the clamping rod 172; the two only need to be axially matched for nesting during assembly, and axially separated during removal, which greatly simplifies the assembly operation of the hoisting device as a whole, further adapts to the hoisting of complex curved workpieces, and reduces the operating intensity; the clamping mechanism 3 only drives the telescopic drive assembly to push the floating seat 171 for clamping when clamping and clamping is required, and the driver 31 can axially disengage from the clamping rod 172 when the telescopic drive assembly is retracted;

[0051] In other embodiments, the circumferential limiting structure at the end of the clamping rod 172 may be a polygonal groove 351, and the circumferential limiting structure at the end of the screw sleeve 35 may be a polygonal protrusion 1721 matching the circumferential limiting structure at the end of the clamping rod 172.

[0052] In other embodiments, the end of the pressing rod 172 and the end of the screw sleeve 35 may be nested and provided with a flat key for torque transmission;

[0053] In some embodiments, an axial limiting structure may be provided on the clamping rod 172 near the circumferential limiting structure to prevent the floating seat 171 from slipping out of the clamp assembly 1 .

[0054] In some embodiments, the fixed clamping assembly 16 includes a fixed seat 161 and a movable jaw 162, the fixed seat 161 is provided with a mounting groove for embedding the movable jaw 162, the fixed seat 161 is penetrated by a second rotating shaft 163 and the second rotating shaft 163 is penetrated in the middle of the movable jaw 162, and the outer wall of the movable jaw 162 and the mounting groove have a preset interval, so that the movable jaw 162 has a certain swing range, can better adapt to the outer wall shape of the workpiece, increase the clamping surface, improve the clamping friction, and make the clamping and support of the clamp assembly 1 more stable;

[0055] In some embodiments, taking the setting of two groups of clamp assemblies 1 as an example, the lifting device includes a mounting frame 5 that matches the length of the connecting assembly 2, and the two ends of the mounting frame 5 are respectively provided with clamping mechanisms 3 corresponding to the clamp assemblies 1. The controller 4 is installed on the mounting frame 5 and arranged between the two clamping mechanisms 3. During assembly, after the mounting frame 5 is installed at a preset position, the position of each clamping mechanism 3 matches the corresponding position of the floating seat 171, thereby reducing the difficulty of assembly. The two drivers 31 are respectively controlled by a controller 4, and the structure is compact and reasonable.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lifting device for complex curved workpieces, characterized in that: include: A clamp assembly (1) comprises a first assembly (11), a second assembly (12) and a fixed clamp assembly (16) arranged on the inner ring of the clamp assembly (1), wherein the outer wall of the first assembly (11) is symmetrically provided with a lifting structure (15), and the middle part of the inner wall of the second assembly (12) is provided with a movable clamp assembly (17), and the movable clamp assembly (17) comprises a floating seat (171) for moving along the center line of the clamp assembly (1); A connecting assembly (2), used for connecting adjacent clamp assemblies (1); The clamping mechanism (3) is arranged on the clamping hoop assembly (1) and is drivingly connected to the movable clamping assembly (17), and is used to drive the movable clamping component to move along the center line of the second assembly (12) to clamp the workpiece, and is also used to detect the clamping force of the floating seat (171) and adjust the clamping force to a target value or a target range.

2. The complex curved workpiece lifting device according to claim 1 is characterized in that: The first assembly (11) and the second assembly (12) are respectively provided with movable joints at both ends thereof, and the clamp assembly (1) comprises a fixing member provided on the movable joint for connecting the first assembly (11) and the second assembly (12).

3. The complex curved workpiece lifting device according to claim 2 is characterized in that: The fixing member is a first rotating shaft (13) for passing through the movable joint, and through holes for setting a limit pin (14) are radially opened at both ends of the first rotating shaft (13).

4. The complex curved workpiece hoisting device according to claim 1, characterized in that: The movable clamping assembly (17) also includes a clamping rod (172) arranged on the back side of the floating seat (171); the front side of the floating seat (171) serves as a clamping surface and is provided with a clamping structure; the clamping rod (172) is used to pass through the middle position of the inner wall of the second assembly (12) along the center line of the clamping hoop assembly (1); and the clamping mechanism (3) is connected to the clamping rod (172).

5. The complex curved workpiece hoisting device according to claim 4 is characterized in that: The lifting device comprises a controller (4), a driver (31) of the clamping mechanism (3), a telescopic driving component arranged at the output end of the driver (31), and a pressure detection unit (32) arranged on the clamping surface of the floating seat (171); the driver (31) is used to drive the clamping rod (172) to move along the center line of the clamping hoop assembly (1) via the driving component; and the controller (4) is used to control the start and stop of the driver (31) according to the target clamping pressure and the feedback signal of the pressure detection unit (32).

6. The complex curved workpiece hoisting device according to claim 5, characterized in that: The telescopic drive assembly comprises a shaft sleeve (33) connected to the output end of the driver (31) and a screw sleeve (35) threadedly connected to the shaft sleeve (33); an elastic member (34) is provided between the shaft sleeve (33) and the screw sleeve (35); the end of the clamping rod (172) and the end of the screw sleeve (35) are respectively matched with circumferential limiting structures; the driver (31) is used to drive the shaft sleeve (33) to rotate so as to drive the screw sleeve (35) to move axially, thereby pushing the drive rod to move so that the floating seat (171) is pressed against the workpiece.

7. The complex curved workpiece hoisting device according to claim 1, characterized in that: The fixed clamping assembly (16) comprises a fixed seat (161) and a movable jaw (162); the fixed seat (161) is provided with a mounting groove for embedding the movable jaw (162); a second rotating shaft (163) is passed through the fixed seat (161) and the second rotating shaft (163) is passed through the middle of the movable jaw (162); and an outer wall of the movable jaw (162) and the mounting groove have a preset interval.

8. The complex curved workpiece hoisting device according to claim 1, characterized in that: The connection assembly (2) comprises a connection rod (21) and a connection head (22) arranged at the end of the connection rod (21), and the clamp assembly (1) is symmetrically provided with a plurality of connection structures (18) for matching with the connection head (22).

9. The complex curved surface workpiece hoisting device according to any one of claims 1 to 8, characterized in that: The hoisting device comprises a mounting frame (5) whose length matches that of the connecting assembly (2), and the clamping mechanisms (3) are respectively arranged at both ends of the mounting frame (5).

10. The complex curved surface workpiece hoisting device according to any one of claims 1 to 8, characterized in that: The first assembly (11) and the second assembly are both arc-shaped components, and a flat structure is respectively arranged in the middle of the outer wall of the first assembly (11) and the middle of the outer wall of the second assembly (12), and / or the outer wall of the first assembly (11) is symmetrically provided with supporting feet of a preset length.

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