Multifunctional rotary lifting appliance and lifting method thereof

Abstract

The technical scheme of the invention discloses a multifunctional rotary lifting appliance and a lifting method thereof, and the multifunctional rotary lifting appliance comprises a vertical lifting mechanism used for vertically lifting a workpiece; the angle adjusting mechanism is used for adjusting the workpiece from a horizontal state and an inclined state to a vertical state and / or adjusting the horizontal angle of the workpiece in the vertical state; the clamping mechanism is used for clamping or loosening the workpiece; a motor is installed in the clamping mechanism and connected to a lead screw jacking device of the background controller, and the lead screw jacking device is used for controlling the clamping mechanism in the horizontal state to clamp a workpiece. The lifting appliance is driven by the motor to rotate, so that a workpiece can rotate, and the angle can be adjusted. And secondly, the lifting appliance can clamp, lift and vertically lift the workpiece under various working conditions and angles. In the heat treatment process of a workpiece, the workpiece can be quickly lifted by the lifting appliance for a vertical quenching furnace, and the workpiece is uniformly water-cooled through rotation in the quenching process of the workpiece. The flexibility of the clamp is improved, the application range of the clamp is widened, and the clamp has high stability.

Description

Technical Field

[0001] The invention relates to the technical field of engineering slings, in particular to a multifunctional rotating sling and a lifting method thereof. Background Art

[0002] A sling is a special tool used to lift and carry all kinds of heavy devices. Most of them are based on the principle of leverage to clamp and lift various overweight large workpieces. Ordinary slings can function as normal clamping, turning over, and carrying. Special slings can complete specified task requirements under specific conditions. There are various types of slings, which can basically meet the needs of conventional working conditions. The present invention can continuously complete the above work requirements under the constraints of the site, workpiece status, and special working conditions.

[0003] At present, great progress has been made in the structural and functional design of hoists, the lifting weight has been continuously increased, and the structure has been continuously optimized. However, in terms of application, it can only realize one or two of the functions of carrying, erecting and turning over castings and forgings, and cannot realize functions such as flipping, vertical lifting, and rotation at the same time. In the actual working process, it is also affected by factors such as the work site, special requirements of the workpiece, and technical limitations, and the use of many hoists is greatly restricted. For example, in the heat treatment process of the workpiece, the target body needs to be heated and cooled. Therefore, in the process of clamping, lifting, turning, and transporting, the hoist needs to be adjusted and replaced, and other equipment needs to be matched, which reduces the efficiency of workpiece production to a certain extent. Summary of the invention

[0004] The technical problem solved by the present invention is that the traditional lifting device is not applicable under certain special working conditions, which reduces the efficiency of workpiece production and prolongs the working period to a certain extent.

[0005] In order to solve the above technical problems, the technical solution of the present invention provides a multifunctional rotating hanger, which includes:

[0006] A vertical lifting mechanism, connected to the lifting equipment, is used to lift the workpiece vertically;

[0007] An angle adjustment mechanism, connected to the vertical hanging mechanism, used to adjust the workpiece from a horizontal state to a vertical state and / or adjust the horizontal angle of the workpiece in the vertical state; and

[0008] The clamping mechanism, which as a whole adopts a four-bar linkage mechanism, is connected to the angle adjustment mechanism and is used to clamp or loosen the workpiece;

[0009] The clamping mechanism is provided with a lead screw lifting device electrically connected to a background controller, and is used to control the clamping mechanism in a horizontal state to clamp the workpiece.

[0010] Optionally, the vertical hanging mechanism includes:

[0011] Hook;

[0012] A pair of hook shafts, arranged in the left and right hanging grooves of the hook;

[0013] Two groups of hook pull plates, one group of two, each group of hook pull plates being connected to two ends of the corresponding hook shaft respectively; and

[0014] The box beam is provided with two sets of hook pull plates symmetrically connected to the box beam.

[0015] Optionally, the angle adjustment mechanism comprises:

[0016] a motor connected to an extension plate of the box beam;

[0017] A large gear rotatably disposed at the bottom of the box beam;

[0018] A small gear connected to the motor shaft of the motor passing through the extension plate and meshing with the large gear;

[0019] A connecting hook, fixed to the large gear;

[0020] a transverse axis, passing through and connecting the connecting hooks transversely; and

[0021] The rotating block is rotatably connected to the horizontal axis and can be switched between a horizontal state and a vertical state during the rotation process.

[0022] Optionally, the clamping mechanism comprises:

[0023] A middle beam, horizontally arranged below the rotating block;

[0024] Two sets of curved arms, two in one set, are symmetrically and rotatably connected to the front and rear faces of both ends of the middle beam through pins;

[0025] Two groups of pull plates, one group of two, both ends of each pull plate are rotatably connected to the rotating block and the corresponding bent arm;

[0026] a pair of pulling arms, symmetrically and rotatably connected to both ends of the middle beam;

[0027] A pair of supporting legs, respectively rotatably connected to the corresponding pulling arm and the bending arm through cylindrical pins; and

[0028] A pair of clamping jaws are rotatably connected to the corresponding supporting feet.

[0029] Optionally, the clamping jaw is horizontally inserted and rotatably connected to the supporting leg, and when the clamping jaw rotates, the plane formed by the rotation trajectory of the jaw surface is perpendicular to the horizontal plane.

[0030] Optionally, the middle beam, the bending arm, the pulling arm and the supporting foot form a parallel four-bar linkage mechanism.

[0031] Optionally, the screw lifting device comprises:

[0032] A mounting frame, fixed to the middle beam;

[0033] A bearing seat connected in the mounting frame;

[0034] A lead screw is disposed in the mounting frame, one end of which is rotatably connected to the bearing seat, and the other end of which is connected to a coupling;

[0035] A fixed shoulder, sleeved outside the lead screw and fixed inside the mounting frame; and

[0036] A lifting plate, one end of which is connected to the lead screw in a lead screw nut structure, and the other end of which passes through the installation frame;

[0037] When the lead screw rotates, the other end of the lifting plate approaches or moves away from the rotating block.

[0038] Optionally, a lifting groove for the lifting plate to enter is provided in the rotating block.

[0039] In order to solve the above technical problems, the technical solution of the present invention further provides a lifting method of the multifunctional rotating sling according to any one of the above items, wherein the lifting method comprises the following steps:

[0040] Step 1: The lifting device is connected to the hook and the lifting device is moved above the vertically placed workpiece, and the lifting device is continuously controlled to be lowered until the workpiece is located between a pair of clamping claws of the clamping device in a vertical state;

[0041] Step 2: The lifting device lifts the sling, and the clamping claw of the clamping device clamps the workpiece due to its own gravity and lifts the workpiece;

[0042] Step 3: The lifting equipment controls the angle adjustment mechanism to rotate the workpiece, which can adjust the horizontal angle of the workpiece and then perform other subsequent operations.

[0043] In order to solve the above technical problems, the technical solution of the present invention further provides a horizontal lifting method of the multifunctional rotating sling according to any one of the above items, wherein the lifting method comprises the following steps:

[0044] Step 1: The lifting device is connected to the hook and the sling is moved to the support platform, and the lifting device is moved to one side so that the clamping device lies flat on the support platform and is in a horizontal state until the horizontally placed workpiece is located between a pair of clamping claws of the clamping device in a horizontal state;

[0045] Step 2: The lifting device controls the screw lifting device to push the lifting plate toward the rotating block, and the clamping claw of the clamping device clamps the workpiece through the linkage of the parallel four-bar linkage mechanism;

[0046] Step 3: The lifting device lifts the lifting device until the horizontally placed workpiece is converted into a vertical position and the workpiece is lifted;

[0047] Step 4: The lifting equipment controls the angle adjustment mechanism to rotate the workpiece, which can adjust the horizontal angle of the workpiece and then perform other subsequent operations.

[0048] The beneficial effects of the technical solution of the present invention are:

[0049] First, the hanger of the present invention drives the rotation of the hanger clamping mechanism through a motor, so that the workpiece can be rotated and the angle can be adjusted. Secondly, the hanger can clamp, lift, and vertically lift the workpiece under various working conditions and angles. During the heat treatment of the workpiece, for a vertical quenching furnace, the hanger can be used to quickly lift forgings and castings, and during the quenching process of the workpiece, the workpiece can be evenly water-cooled by rotation. The flexibility of the clamp is improved, the scope of application of the clamp is expanded, and it has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural diagram of the multifunctional rotating hanger of the present invention;

[0051] Figure 2 It is a positive triaxial projection of the sling of the present invention in a horizontal state;

[0052] Figure 3 It is a partial top view of the sling of the present invention in a horizontal state;

[0053] Figure 4 It is a partial view of the horizontal clamping state of the sling of the present invention;

[0054] Figure 5 It is a structural diagram of the screw lifting device of the present invention;

[0055] Figure 6 It is a partial detail diagram of the lifting device of the lifting screw of the present invention;

[0056] Figure 7 It is a schematic diagram of the lifting process of the present invention;

[0057] Figure 8 It is a schematic diagram of the rotation of the hanger in the quenching furnace of the present invention;

[0058] Fig. 9 It is the principle diagram of the parallel four-bar linkage of the present invention.

[0059] In the attached figure: 1. hook; 2. hook shaft; 3. hook pull plate; 4. box beam; 5. motor; 6. large gear; 7. small gear; 8. horizontal axis; 9. connecting hook; 10. rotating block; 11. screw jacking device; 12. middle beam; 13. pull plate; 14. pin shaft; 15. pull arm; 16. bent arm; 17. cylindrical pin; 18. support foot; 19. clamping claw; 20. supporting platform; 21. vertical quenching furnace; 22. front base; 23. rear base; 24. lifting plate; 25. screw; 26. fixed shaft shoulder; 27. coupling; 28. mounting frame; 29. ​​bearing seat; 30. extension plate; 31. workpiece; 32. lifting groove. DETAILED DESCRIPTION

[0060] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0065] See also Figure 1 As shown, a multifunctional rotating hoist of an embodiment is shown, which includes a vertical lifting mechanism connected to the lifting equipment and used to lift the workpiece 31 vertically; an angle adjustment mechanism connected to the vertical lifting mechanism and used to adjust the workpiece 31 from a horizontal state to a vertical state and / or adjust the horizontal angle of the workpiece in the vertical state; and a clamping mechanism connected to the angle adjustment mechanism and used to clamp or loosen the workpiece 31; wherein a screw lifting device 11 electrically connected to a background controller is installed in the clamping mechanism, which is used to control the clamping mechanism in a horizontal state to clamp the workpiece 31.

[0066] In this embodiment, continue to refer to Figure 1 As shown, the vertical lifting mechanism includes a hook 1; a pair of hook shafts 2, which are arranged in the left and right lifting grooves of the hook 1; two groups of hook pull plates 3, two in a group, and each group of hook pull plates 3 is respectively connected to the two ends of the corresponding hook shaft 2; and a box beam 4, and the two groups of hook pull plates 3 are symmetrically connected to the box beam 4.

[0067] In this embodiment, continue to refer to Figure 1 As shown, the angle adjustment mechanism includes a motor 5 connected to the extension plate 30 of the box beam 4; a large gear 6 rotatably arranged at the bottom of the box beam 4; a small gear 7 connected to the motor shaft of the motor 5 passing through the extension plate 30 and meshing with the large gear 6; a connecting hook 9 fixed to the large gear 6; a horizontal axis 8 passing horizontally and connected to the connecting hook 9; and a rotating block 10 rotatably connected to the horizontal axis 8, and the rotation can switch the sling clamping mechanism between the horizontal state and the vertical state.

[0068] In this embodiment, continue to refer to Figure 1As shown, the clamping mechanism includes an intermediate beam 12, which is horizontally arranged below the rotating block 10; two bent arms 16, which are symmetrically and rotatably connected to the front and rear surfaces of both ends of the intermediate beam 12 through pins 14; two groups of pull plates 13, two in a group, and both ends of each pull plate 13 are rotatably connected to the rotating block 10 and the corresponding bent arms 16 respectively; a pair of pull arms 15, which are symmetrically and rotatably connected to the two pin holes at the upper end of the intermediate beam 12; a pair of supporting legs 18, which are rotatably connected to the corresponding pull arms 15 through cylindrical pins, and are rotatably connected to the bent arms 16 through cylindrical pins 17; and a pair of clamping claws 19, which are rotatably connected to the corresponding supporting legs 18 respectively.

[0069] In this embodiment, the clamping jaw 19 is horizontally inserted and rotatably connected to the supporting leg 18. When the clamping jaw 19 rotates, the plane formed by the rotation track of the jaw surface is perpendicular to the horizontal plane.

[0070] In this embodiment, the middle beam 12, the bent arm 16, the pull arm 15 and the support leg 18 form a parallel four-bar linkage. Under the action of the pin, the middle beam 12, the bent arm 16, the pull arm 15 and the support leg 18 form a parallel four-bar linkage, and the tightening process of the clamping jaw 19 can always maintain water flow, and the clamping jaw 19 and the workpiece 31 always maintain surface contact. Fig. 9 Shown is the schematic diagram of the parallel four-bar linkage.

[0071] In this embodiment, Figure 5 and Figure 6 As shown, the screw lifting device 11 includes a mounting frame 28, which is fixed to the middle beam 12; a bearing seat 29, which is connected to the mounting frame 28; a screw 25, which is arranged in the mounting frame 28, and one end of which is rotatably connected to the bearing seat 29, and the other end is connected to the coupling 27; a fixed shoulder 26, which is sleeved on the outside of the screw 25 and fixed in the mounting frame 28; and a lifting plate 24, one end of which is connected to the screw 25 in a screw nut structure, and the other end passes through the mounting frame 28; wherein when the screw 25 rotates, the other end of the lifting plate 24 approaches or moves away from the rotating block 10.

[0072] In this embodiment, a lifting groove 32 for the lifting plate 24 to enter is provided in the rotating block 10 .

[0073] This embodiment also provides a lifting method of the multifunctional rotating sling according to any one of the above items, wherein the lifting method comprises the following steps:

[0074] See also Figure 1 and Figure 8 As shown, step 1: the lifting device is connected to the hook 1 and the lifting device is moved above the vertically placed workpiece 31, and the lifting device is continuously controlled to be lowered until the workpiece 31 is located between a pair of clamping claws 19 of the clamping device in a vertical state;

[0075] Step 2: The lifting device lifts the lifting device, and the clamping claw 19 of the clamping device clamps the workpiece 31 due to its own gravity and lifts the workpiece 31;

[0076] Step 3: The lifting device controls the angle adjustment mechanism to rotate the workpiece 31 to adjust the horizontal angle of the workpiece 31, and then performs other subsequent operations.

[0077] The detailed lifting method is as follows: when the hoist is lifting vertically, the workpiece is located between the left and right clamps, the hook is lifted under the action of external force, the hook pull plate is forced upward, and the box beam, horizontal axis, rotating block and pull plate rise at the same time. At this time, the bent arm rotates and retracts around the pin under the action of the pull plate, and then the support foot at the lower end of the bent arm is tightened toward one side of the workpiece, so that the clamp contacts and clamps the workpiece, realizing the vertical clamping and lifting function of the hoist.

[0078] like Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, this embodiment also provides a lifting method of the multifunctional rotating sling according to any one of the above items, wherein the lifting method comprises the following steps:

[0079] Step 1: The lifting device is connected to the hook 1 and the lifting device is moved to the support platform 20, and the lifting device is moved to one side so that the clamping device lies flat on the support platform 20 and is in a horizontal state, until the workpiece 31 in a horizontal position (when the workpiece 31 is in a horizontal position, it is supported on the front base 22 and the rear base 23) is located between a pair of clamping jaws 19 of the clamping device in a horizontal state;

[0080] Step 2: The lifting device controls the screw lifting device 11 to push the lifting plate 24 toward the rotating block 10, and the clamping claw 19 of the clamping device clamps the workpiece 31 through the linkage of the parallel four-bar linkage mechanism;

[0081] Step 3: The lifting device lifts the lifting device until the horizontally placed workpiece 31 is converted into a vertically placed workpiece 31 and the workpiece 31 is lifted; Figure 2 and Figure 7 As shown;

[0082] Step 4: The lifting device controls the angle adjustment mechanism to rotate the workpiece 31 to adjust the horizontal angle of the workpiece 31, and then performs other subsequent operations.

[0083] The detailed lifting method is as follows: before the spreader is lifted horizontally, the crane drives the hook to slowly descend. After the clamp reaches the designated position, the crane moves right and places the spreader clamping device on the support platform. At this time, the spreader clamping mechanism is in a horizontal state. Figure 2 The three-axis measurement of the horizontal state of the spreader. Figure 3 A partial top view of the spreader in horizontal position.

[0084] The workpiece is located between the left and right clamps. At this time, the lifting plate at the upper end of the screw lifting device is pushed out to the side of the rotating block. The rotating block and the pull plate are forced to move outward, driving the bending arm and the support leg to retract to the side of the workpiece. The clamps contact and clamp the workpiece, realizing the clamping function when the sling is in a horizontal state. Figure 4 Partial view of the spreader in horizontal clamping state. Figure 5 Structural diagram of the screw lifting device. Figure 6 Partial detail of the screw lifting device.

[0085] In the horizontal state, the clamping function is completed, the overhead crane and the hook drive the spreader to rise, and move to the left at the same time to lift the workpiece, and finally realize the spreader's flipping and vertical lifting function. Figure 7 Schematic diagram of the lifting process.

[0086] The workpiece is lifted and transferred to the vertical quenching furnace 21. At this time, the motor drives the small gear to rotate, so that the large gear and the connecting hook matched with it rotate, thereby realizing the rotation of the parts below the rotating block and the workpiece, and realizing the rotation function of the hanger. Figure 8 Schematic diagram of the rotation of the hanger in the quenching furnace.

[0087] The characteristics and functions of the present invention will be further understood through the following description.

[0088] The purpose of the sling in this embodiment is mainly twofold. First, by changing the angle between the rotating block of the sling and the connecting hook, the sling can be operated in multiple working conditions in the horizontal and vertical directions. In the horizontal state, the clamping function of the sling is realized by the screw-driven lifting device. The sling can clamp and lift the workpiece in various working conditions and angles, and complete the task quickly and efficiently. Second, the rotation of the motor output shaft realizes the rotation of the sling through the gear meshing transmission, thereby driving the workpiece to rotate, and the workpiece can be quickly adjusted in the horizontal direction. During the quenching process, the workpiece is evenly water-cooled in the quenching furnace through continuous rotation.

[0089] The structural design of a multifunctional rotating sling of this embodiment realizes the stable clamping, lifting, flipping and vertical lifting of the workpiece under various working conditions and angles through the rotating block and the screw device on the sling. Secondly, the rotation of the sling is driven by the motor, thereby realizing the rotation and adjustment of the workpiece.

[0090] The technical features of the sling of this embodiment are four: First, by changing the angle between the horizontal axis and the connecting hook on the sling rotating block, the sling can be operated in multiple working conditions in the horizontal and vertical directions. Second, in the horizontal state, the horizontal clamping function of the sling is realized by the screw-driven jacking device. Third, the clamping device of the sling adopts a parallel four-bar linkage mechanism, so that the contact between the clamping claw and the workpiece is always surface contact, which improves stability. Fourth, the rotation of the motor output shaft realizes the rotation of the sling through gear meshing transmission, thereby driving the workpiece to rotate, and the workpiece can quickly adjust the horizontal angle. During the quenching process, the workpiece is evenly water-cooled in the quenching furnace through rotation.

[0091] In summary, the hanger of the present invention drives the rotation of the hanger through a motor, so that the workpiece can be rotated and the angle can be adjusted. Secondly, the hanger can clamp, lift, and vertically lift the workpiece under various working conditions and angles. During the heat treatment of the workpiece, for a vertical quenching furnace, the hanger can be used to quickly lift forgings and castings, and during the quenching of the workpiece, the workpiece can be evenly water-cooled by rotation. The flexibility of the clamp is improved, the scope of application of the clamp is expanded, and it has higher stability.

[0092] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional rotating sling, characterized in that: include: A vertical lifting mechanism, connected to the lifting equipment, is used to lift the workpiece vertically; An angle adjustment mechanism, connected to the vertical hanging mechanism, is convenient for adjusting the workpiece from a horizontal state to a vertical state and / or adjusting the horizontal angle of the workpiece in the vertical state; as well as The clamping mechanism, which as a whole adopts a four-bar linkage mechanism and is connected to the angle adjustment mechanism, is used to clamp or loosen the workpiece; in The clamping mechanism is provided with a lead screw lifting device electrically connected to a background controller, which is used to control the clamping mechanism in a horizontal state to clamp the workpiece.

2. The multifunctional rotating hanger according to claim 1, characterized in that: The vertical hanging mechanism comprises: Hook; A pair of hook shafts, arranged in the left and right hanging grooves of the hook; Two groups of hook pull plates, one group of two, each group of hook pull plates being connected to two ends of the corresponding hook shaft respectively; and The box beam is provided with two sets of hook pull plates symmetrically connected to the box beam.

3. The multifunctional rotating hanger according to claim 2, characterized in that: The angle adjustment mechanism comprises: a motor connected to an extension plate of the box beam; A large gear rotatably disposed at the bottom of the box beam; A small gear connected to the motor shaft of the motor passing through the extension plate and meshing with the large gear; A connecting hook, fixed to the large gear; a transverse axis, passing through and connecting the connecting hooks transversely; and The rotating block is rotatably connected to the horizontal axis and can be switched between a horizontal state and a vertical state during the rotation process.

4. The multifunctional rotating hanger according to claim 3, characterized in that: The clamping mechanism comprises: A middle beam, horizontally arranged below the rotating block; A set of bent arms are symmetrically and rotatably connected to the end holes on both sides of the middle beam through pins; Two groups of pull plates, one group of two, both ends of each pull plate are rotatably connected to the rotating block and the corresponding bent arm; A pair of pulling arms, symmetrically and rotatably connected to the upper pin holes of the middle beam; A pair of supporting legs, rotatably connected to the corresponding pulling arm and bending arm through cylindrical pins; and A pair of clamping jaws are rotatably connected to the corresponding supporting feet.

5. The multifunctional rotary hanger according to claim 4, characterized in that: The clamping jaw is horizontally inserted and rotatably connected to the supporting leg. When the clamping jaw rotates, the plane formed by the rotation track of the jaw surface is perpendicular to the horizontal plane.

6. The multifunctional rotary hanger according to claim 5, characterized in that: The middle beam, the bending arm, the pulling arm and the supporting foot form a parallel four-bar linkage mechanism.

7. The multifunctional rotary hanger according to claim 6, characterized in that: The screw lifting device comprises: A mounting frame, fixed to the middle beam; A bearing seat connected in the mounting frame; A lead screw is disposed in the mounting frame, one end of which is rotatably connected to the bearing seat, and the other end of which is connected to a coupling; A fixed shoulder, sleeved outside the lead screw and fixed inside the mounting frame; and A lifting plate, one end of which is connected to the lead screw in a lead screw nut structure, and the other end of which passes through the installation frame; When the lead screw rotates, the other end of the lifting plate approaches or moves away from the rotating block.

8. The multifunctional rotary hanger according to claim 7, characterized in that: The rotating block is provided with a lifting groove for the lifting plate to enter.

9. A lifting method for a multifunctional rotary sling according to any one of claims 1 to 8, characterized in that: The lifting method comprises the following steps: Step 1: The lifting device is connected to the hook and the lifting device is moved above the vertically placed workpiece, and the lifting device is continuously controlled to be lowered until the workpiece is located between a pair of clamping claws of the clamping device in a vertical state; Step 2: The lifting device lifts the sling, and the clamping claw of the clamping device clamps the workpiece due to its own gravity and lifts the workpiece; Step 3: The lifting equipment controls the angle adjustment mechanism to rotate the workpiece, which can adjust the horizontal angle of the workpiece and then perform other subsequent operations.

10. A lifting method for a multifunctional rotary sling according to any one of claims 1 to 8, characterized in that: The lifting method comprises the following steps: Step 1: The lifting device is connected to the hook and the sling is moved to the support platform, and the lifting device is moved to one side so that the clamping device lies flat on the support platform and is in a horizontal state until the horizontally placed workpiece is located between a pair of clamping claws of the clamping device in a horizontal state; Step 2: The lifting device controls the screw lifting device to push the lifting plate toward the rotating block, and the clamping claw of the clamping device clamps the workpiece through the linkage of the parallel four-bar linkage mechanism; Step 3: The lifting device lifts the lifting device until the horizontally placed workpiece is converted into a vertical position and the workpiece is lifted; Step 4: The lifting equipment controls the angle adjustment mechanism to rotate the workpiece, which can adjust the horizontal angle of the workpiece and then perform other subsequent operations.

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