Workpiece hoisting and overturning tool

Abstract

The application discloses a workpiece hoisting and overturning tool, which comprises a movable pulley assembly, a secondary hoisting frame and a primary hoisting frame. The lower end of the primary hoisting frame is provided with a plurality of second lifting points. The secondary hoisting frame is arranged below one side of the primary hoisting frame and is provided with a third lifting point below. The movable pulley assembly is arranged between the primary hoisting frame and the secondary hoisting frame and connects the two. The movable pulley assembly comprises a secondary hoisting cable, and the secondary hoisting cable is provided with a traction end. The plurality of second lifting points are connected with the first side of the workpiece through first sub hoisting cables respectively, and the third lifting point is connected with the second side of the workpiece through a second sub hoisting cable. The primary hoisting frame is lifted, the workpiece is hoisted to be suspended with the second side upward by the second sub hoisting cable and at least one first sub hoisting cable, then the secondary hoisting frame is lowered until the workpiece is hoisted with the first side upward by the plurality of first sub hoisting cables, so that the workpiece is overturned. The workpiece can be hoisted to be suspended and overturned in the air to avoid the workpiece from being damaged by knocking.

Description

Technical Field

[0001] This invention belongs to the field of workpiece flipping equipment, and particularly relates to a workpiece lifting and flipping fixture. Background Technology

[0002] When large workpieces need to be flipped, the current practice is to use lifting equipment to flip the workpiece to the side facing upwards and connect it with a lifting cable. However, at the moment the workpiece is lifted off the ground, when it flips, the other side of the workpiece will hit the ground heavily, which will cause damage to the workpiece. If the ground is a concrete ground, it may also damage the concrete layer. For large precision equipment, this flipping solution is even less feasible. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a workpiece lifting and flipping fixture that can lift and flip the workpiece in the air, so as to realize the workpiece flipping and avoid the workpiece being damaged by collision during the flipping.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] A workpiece lifting and flipping fixture includes:

[0006] The main lifting frame has multiple secondary lifting points at its lower end;

[0007] A secondary lifting frame is located below the main lifting frame on one side, and a third lifting frame is located below the secondary lifting frame;

[0008] A movable pulley assembly is located between the main lifting frame and the auxiliary lifting frame, connecting the two, and the movable pulley assembly includes an auxiliary sling with a traction end;

[0009] Multiple second lifting points are respectively connected to the first side of the workpiece via first sub-slings, and the third lifting point is connected to the second side of the workpiece via second sub-slings, wherein the first side and the second side are two adjacent sides of the workpiece;

[0010] The main lifting frame is raised, and the workpiece is lifted into the air with its second side facing upward by the second sub-sling and at least one first sub-sling. The auxiliary lifting frame is then lowered until the workpiece is lifted into the air with its first side facing upward by multiple first sub-slings, so as to achieve workpiece flipping.

[0011] Preferably, the upper end of the main hoisting frame has multiple first hoisting points.

[0012] Preferably, it further includes: a first hook, which is located above the main lifting frame and connected to a plurality of first lifting points via a main lifting cable.

[0013] Preferably, it further includes: a locking element, which includes a locking ring and a locking post; the locking post is installed on the side wall of the auxiliary lifting frame; the locking ring is rotatably installed below the main lifting frame; when the auxiliary lifting frame moves upward to the reset position, the locking ring can rotate to be fitted onto the locking post to limit the auxiliary lifting frame relative to the main lifting frame.

[0014] Preferably, the movable pulley assembly further includes: a fixed pulley disposed on the corresponding side of the lower end of the main lifting frame; a movable pulley disposed on the auxiliary lifting frame; one end of the auxiliary sling is connected to the main lifting frame and passes around the movable pulley and the fixed pulley, and the other end of the auxiliary sling is the traction end.

[0015] Preferably, the upper end of the auxiliary lifting frame is recessed with a first receiving groove, and the movable pulley is installed in the first receiving groove.

[0016] Preferably, the main hoisting frame has a through mounting hole in the middle, a guide wheel is installed in the mounting hole, and the traction end of the auxiliary sling passes around the guide wheel to turn upward.

[0017] Preferably, multiple fixed pulleys and multiple movable pulleys are provided.

[0018] Preferably, it further includes: a second hook, located above the main lifting frame and connected to the traction end of the auxiliary sling.

[0019] Preferably, it further includes: a sling winding component disposed at the upper end of the main hoisting frame, which is used to wind up the traction end of the auxiliary sling.

[0020] The beneficial effects of this invention are as follows: By setting an auxiliary lifting frame below the main lifting frame, when the workpiece needs to be flipped, with the second side of the workpiece facing upwards, multiple second lifting points are first connected to the first side of the workpiece via first sub-slings, and the third lifting point is connected to the second side of the workpiece via second sub-slings. The length of the second sub-slings is adjusted to a suitable length. During the process of lifting the main lifting frame upwards, the traction end of the auxiliary slings needs to be tightened to prevent the auxiliary lifting frame from moving downwards relative to the main lifting frame until the workpiece is lifted into the air and has a certain safe distance from the ground. Then, the traction end of the auxiliary slings is slowly released, allowing the auxiliary lifting frame to slowly move downwards relative to the main lifting frame until the multiple second sub-slings are no longer under force. At this point, the multiple first sub-slings are under force and together flip the workpiece so that the first side faces upwards. Since the workpiece is in a suspended state during the entire flipping process, it will not be bumped or collided, thus protecting the workpiece. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the workpiece lifting and flipping fixture for storage according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the workpiece lifting and flipping fixture as described in an embodiment of the present invention during its unfolding.

[0023] Figure 3 This is a schematic diagram showing the distribution of the second receiving slot on the main hoisting frame in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the movable pulley assembly described in an embodiment of the present invention;

[0025] Figure 5 This is an initial schematic diagram of the workpiece lifting and flipping fixture described in an embodiment of the present invention when lifting the workpiece;

[0026] Figure 6 This is a schematic diagram of the workpiece lifting and turning fixture described in an embodiment of the present invention when the workpiece begins to turn.

[0027] Figure 7 This is a schematic diagram illustrating the workpiece lifting and turning fixture according to an embodiment of the present invention when the workpiece has been lifted and turned. The names of the components corresponding to the relevant reference numerals in the diagram are as follows:

[0028] 10 Main lifting frame, 11 Second lifting point, 12 First lifting point, 13 Mounting hole, 14 Guide wheel, 15 Counterweight block, 16 Second receiving groove;

[0029] 20 lifting frames, 21 third lifting point, 22 first receiving slot;

[0030] 30 Movable pulley assembly, 31 Auxiliary sling, 32 Fixed pulley, 32a First fixed pulley, 32b Second fixed pulley, 32c Third fixed pulley, 33 Movable pulley, 33a First movable pulley, 33b Second movable pulley, 33c Third movable pulley, 33d Fourth movable pulley, 33e Fifth movable pulley, 33f Sixth movable pulley;

[0031] 41 First sub-sling, 42 Second sub-sling, 43 Main sling;

[0032] 50 Workpiece, 51 First side, 52 Second side, 53 Fourth lifting point, 54 Fifth lifting point;

[0033] 60 First hook;

[0034] 70 Second hook;

[0035] 80 Locking component, 81 Locking ring, 82 Locking pin;

[0036] 90 rolls of cable. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0038] like Figures 1-7 As shown, an embodiment of the present invention provides a workpiece 50 lifting and flipping fixture, combined with... Figure 1 As shown, it includes:

[0039] The main hoisting frame 10 has multiple second hoisting points 11 at its lower end;

[0040] The auxiliary lifting frame 20 is located below the main lifting frame 10 on one side, and the auxiliary lifting frame 20 has a third lifting point 21 below it.

[0041] A movable pulley assembly 30 is located between the main lifting frame 10 and the auxiliary lifting frame 20 and connects the two. The movable pulley assembly 30 includes an auxiliary sling 31, and the auxiliary sling 31 has a traction end.

[0042] Multiple second lifting points 11 are respectively connected to the first side 51 of the workpiece 50 via first sub-slings 41, and the third lifting point 21 is connected to the second side 52 of the workpiece 50 via second sub-slings 42, wherein the first side 51 and the second side 52 are two adjacent sides of the workpiece 50.

[0043] Taking the workpiece 50 as a cuboid as an example, a fourth lifting point 53 is provided at each of the four corners of its first side 51, and a fifth lifting point 54 is provided at each of the two corners corresponding to the end of its second side 52 away from the first side 51.

[0044] In this embodiment, the second lifting point 11, the third lifting point 21, the fourth lifting point 53, and the fifth lifting point 54 are all lifting rings (which can be welded lifting lugs or threaded lifting ring bolts, which are conventional technologies and will not be described in detail here). In this embodiment, there can be four second lifting points 11 and two third lifting points 21. Correspondingly, there can be four first sub-slings 41 and two second sub-slings 42. The four second lifting points 11, the four fourth lifting points 53, and the four first sub-slings 41 correspond one-to-one, and the two third lifting points 21, the two fifth lifting points 54, and the two second sub-slings 42 correspond one-to-one. The two ends of each first sub-sling 41 are connected to the corresponding second lifting point 11 and the fourth lifting point 53, and the two ends of each second sub-sling 42 are connected to the corresponding third lifting point 21 and the fifth lifting point 54.

[0045] See details Figures 5-7 When workpiece 50 needs to be flipped, taking the second side 52 of workpiece 50 facing upwards as an example, first tighten the traction end of the auxiliary sling 31 until the auxiliary lifting frame 20 moves upwards to its reset position. Then, connect the first sub-sling 41 and the second sub-sling 42 to workpiece 50 as described above. Then, lift or jack up the main lifting frame 10 until workpiece 50 is off the ground and suspended in the air. [Whereinafter, the length of the second sub-sling 42 can be slightly less than the length of the first sling, so as to reduce the tilt angle of workpiece 50 when it is lifted into the air. (When the second side 52 of workpiece 50 is facing upwards and it is in a suspended state, the first sub-sling 41 corresponding to the two fourth lifting points 53 near the second side 52 is in a slack state, that is, it is not under force. At this time, it is mainly the two second sub-slings 42 and the other two first sub-slings. [41. The workpiece 50 is lifted by force]. The workpiece 50 can only be flipped when it is a certain safe distance from the ground (the safe distance can be greater than the maximum length of the workpiece 50). When the workpiece 50 is suspended at the safe distance, the traction end of the auxiliary lifting cable 31 can be slowly released. At this time, the auxiliary lifting component will move down relative to the main lifting frame 10 under the action of its own weight and the weight of the workpiece 50. Correspondingly, the end of the workpiece 50 with the fifth lifting point 54 will also slowly move down until the second sub-lifting cable 42 is in a state of no force. At this time, the four first sub-lifting cables 41 will completely lift the workpiece 50. In this state, the first side 51 of the workpiece 50 is facing up, that is, the workpiece 50 is flipped 90° in the suspended state (from the initial state of the second side 52 facing up to the first side 51 facing up).

[0046] In this embodiment, the main lifting frame 10 can be lifted in various ways. It can be lifted by a lifting device or raised by a hoisting device (such as using a forklift to hold it and lift it upwards). Specifically, the main lifting frame 10 can move up and down in various ways, which will not be described in detail here.

[0047] In one embodiment, the upper end of the main lifting frame 10 has multiple first lifting points 12, wherein the first lifting points 12 can be welded lifting lugs or threaded lifting eye bolts. Preferably, at least three first lifting points 12 can be provided, preferably four. At this time, a main lifting sling 43 can be connected to each first lifting point 12 to lift the main lifting frame 10 by a lifting device. Preferably, the workpiece 50 lifting and turning fixture also includes a first hook 60, which is located above the main lifting frame 10 (preferably above the middle of the main lifting frame 10). At this time, the upper ends of the multiple main lifting slings 43 are connected to the first hook 60, and the first hook 60 can be connected to the lifting end of the lifting device (the first hook 60 can also be the lifting end of the lifting device).

[0048] Currently, both cranes and gantry cranes can be used as lifting equipment. Most cranes and gantry cranes have two hooks (a main hook and an auxiliary hook, which operate independently. The main hook can be used as the first hook, and the auxiliary hook can be used as the second hook). In this case, only one lifting equipment is needed for lifting.

[0049] In one embodiment, the main lifting frame 10 can be a square frame (in which case the plurality of first lifting points 12 and the plurality of second lifting points 11 are distributed circumferentially at intervals on the main lifting frame 10, preferably, the four first lifting points 12 and the four second lifting points 11 are respectively located at the four corners of the main lifting frame 10), or it can be an "H" structure (in which case the four first lifting points 12 and the four second lifting points 11 can also be respectively located at the four ends of the frame), and of course it is not limited to this, any other structure that is easily conceived by those skilled in the art can be used.

[0050] like Figure 4 As shown, in one embodiment, the movable pulley assembly 30 further includes a fixed pulley 32 and a movable pulley 33. The fixed pulley 32 is disposed on the corresponding side of the lower end of the main lifting frame 10; the movable pulley 33 is disposed on the auxiliary lifting frame 20; one end of the auxiliary sling 31 is connected to the main lifting frame 10 and passes around the movable pulley and the fixed pulley 32, and the other end of the auxiliary sling 31 is the traction end. By positioning the auxiliary lifting frame 20 below the main lifting frame 10 via the movable pulley assembly 30, it becomes easier to move the entire auxiliary lifting frame 20 up and down under the pull of the auxiliary sling 31.

[0051] To further reduce effort, multiple fixed pulleys 32 and movable pulleys 33 are provided. Specifically, three fixed pulleys 32 and six movable pulleys 33 are provided. The three fixed pulleys 32 are designated as first fixed pulley 32a, second fixed pulley 32b, and third fixed pulley 32c, and the six movable pulleys 33 are designated as first movable pulley 33a, second movable pulley 33b, third movable pulley 33c, fourth movable pulley 33d, fifth movable pulley 33e, and sixth movable pulley 33f. The three fixed pulleys 32 are... The main lifting frame 10 has six fixed pulleys 32 spaced apart along its length on the corresponding side below it. The axle of each fixed pulley 32 is perpendicular to that side of the main lifting frame 10. The first fixed pulley 32a is located between the second fixed pulley 32b and the third fixed pulley 32c. All six movable pulleys 33 are installed on the upper end of the auxiliary lifting frame 20, with their axles perpendicular to the length of the auxiliary lifting frame 20. The third movable pulley 33c and the fourth movable pulley 33d are a pair, spaced apart along the width of the auxiliary lifting frame 20. The fifth movable pulley 33e and the sixth movable pulley 33f are a pair. The auxiliary lifting frame 20 is spaced apart along its width. The first movable pulley 33a and the second movable pulley 33b are located between the third movable pulley 33c and the fifth movable pulley 33e, and are spaced apart along the length of the auxiliary lifting frame 20. The first movable pulley 33a is closer to the third movable pulley 33c. After one end of the auxiliary lifting cable 31 is connected to the main lifting frame 10, it rotates from the first movable pulley 33a to the third movable pulley 33c, then to the third fixed pulley 32c, then to the fourth movable pulley 33d, then to the sixth movable pulley 33f, and then to the second... The fixed pulley 32b is then moved to the fifth movable pulley 33e, then to the second movable pulley 33b, and then to the first fixed pulley 32a. Finally, the other end of the auxiliary sling 31 forms the traction end. At this point, the combination of multiple movable pulleys 33, multiple fixed pulleys 32, and auxiliary sling 31 can save more effort. Moreover, the multiple movable pulleys 33 and multiple fixed pulleys 32 are more evenly distributed between the main lifting frame 10 and the auxiliary lifting frame 20. This makes the auxiliary lifting frame 20 more stable when moving up and down, and it will not tilt due to uneven weight distribution at various points of the workpiece 50.

[0052] See details Figure 1 and Figure 2To improve the stability of the entire workpiece 50 during lifting and tilting when the auxiliary sling 31 is subjected to external traction, the following optimization can be made: a through-hole 13 can be provided in the middle of the main lifting frame 10. A guide wheel 14 is installed in the mounting hole 13, wherein the guide wheel 14 is a grooved wheel with its axle horizontally distributed. In this case, the traction end of the auxiliary sling 31 bypasses the guide wheel 14 to turn upward (it passes through the mounting hole 13 to face upward). The guide wheel 14 can change the hard friction between the auxiliary sling and the wall of the mounting hole 13 into rolling friction, thus reducing the friction force and extending the service life of the auxiliary sling 31. This also ensures that the traction end of the auxiliary sling 31 is stressed upwards. Based on this, the following adjustments are made: the lifting and turning component for the workpiece 50 may also include a second hook 70, which is located at the traction end of the auxiliary sling 31 and above the main lifting frame 10. The second hook 70 may also be pulled by another lifting device (the second hook 70 may also be the lifting end of the lifting device). When the workpiece 50 is lifted into the air, the first hook 60 and the second hook 70 move upwards synchronously to ensure that the auxiliary lifting frame 20 does not move up and down relative to the main lifting frame 10, thereby allowing the workpiece 50 to be lifted smoothly.

[0053] In one embodiment, when the lifting and turning fixture for the workpiece 50 is not in use, in order to facilitate the storage of the auxiliary sling 31 and the main sling 43, a cable reel 90 (specifically, a cable reel) can be set at the upper end of the main lifting frame 10 to wind up the auxiliary sling 31. Of course, the main sling 43 can also be wound up on it, provided that the main sling 43 and the auxiliary sling 31 are not knotted on the cable reel.

[0054] Of course, it is inconvenient to set the auxiliary sling 31 with the second hook 70 and lift it by the lifting equipment. Moreover, there will be mutual interference when the two lifting equipment work together. In this case, it is advisable to set a winch on the main lifting frame 10 (at this time, the sling 90 can be the winch, and the corresponding lifting equipment can only have one hook as the first hook). The traction end of the auxiliary sling 31 is connected to the winding end of the winch. In this way, the winch can adjust the winding or unwinding of the auxiliary sling 31. The structure is more compact, and there is no need to worry about the auxiliary sling 31 being messy and knotted later. It also saves a lifting equipment and eliminates the need to set a second hook on the auxiliary sling. Specifically, when lifting the workpiece, the winch winds the auxiliary sling until it is always in contact with the main lifting frame. When flipping, the winch unwinds it. At this time, the auxiliary lifting frame moves down relative to the main lifting frame so that the workpiece gradually flips to the point where its first side faces upward.

[0055] In one embodiment, to make the structure of the entire workpiece 50 lifting and flipping fixture more compact when the auxiliary lifting frame 20 moves upward to its reset position, and to reduce the space occupied when both are stored, a first receiving groove 22 is recessed at the upper end of the auxiliary lifting frame 20. All the movable pulleys are installed within the first receiving groove 22. When the auxiliary lifting frame 20 is in contact with the lower end of the main lifting frame 10, the fixed pulley 32 can also extend into the first receiving groove 22 for storage. The advantage of providing the first receiving groove 22 is that when the auxiliary lifting frame 20 moves upward to its reset position, it can be in contact with the main lifting frame 10. Further, to prevent the workpiece 50 lifting and turning fixture from swaying or swinging relative to the main lifting frame 10 when the workpiece 50 is not being lifted and the auxiliary lifting frame 20 has moved to its reset position (this is because the auxiliary sling 31 in the pulley assembly 30 is flexible and does not have a limiting function for the main lifting frame 10 and the auxiliary lifting frame 20, so the workpiece 50 lifting and turning fixture will generate a lot of noise when it is transferred due to the swaying of the auxiliary lifting frame 20 relative to the main lifting frame 10), the workpiece 50 lifting and turning fixture also includes a locking component 80, which includes a locking ring 81 and a locking post 82; the locking post 82 is installed on the side wall of the auxiliary lifting frame 20; the locking ring 81 is rotatably installed below the main lifting frame 10; when the auxiliary lifting frame 20 moves upward to its reset position, the locking ring 81 can rotate to fit onto the locking post 82 to limit the auxiliary lifting frame 20 relative to the main lifting frame 10.

[0056] See details Figure 3 Preferably, a second receiving groove is recessed upward at the lower end of the main hoisting frame corresponding to the position of the auxiliary hoisting frame, and multiple fixed pulleys are installed at the bottom wall of the second receiving groove. More preferably, the second receiving groove can be open on one side near the middle of the lower end of the main hoisting frame, so that the auxiliary sling can enter the open side and pass through to the guide wheel 14.

[0057] Preferably, two locking rings 81 and two locking posts 82 are provided. The two locking posts 82 are located at both ends of the auxiliary lifting frame 20, and the two locking rings 81 are located at the lower end of the main lifting frame 10 near the auxiliary lifting frame 20, and are distributed at intervals along the length of that side, and cooperate with the two locking posts 82. When the auxiliary lifting frame 20 moves upward and resets under the traction of the pulley assembly 30 and is in contact with the lower end of the main lifting frame 10, the two locking rings 81 can be rotated to fit on the two locking posts 82. That is, the locking rings 81 and the locking posts 82 limit the corresponding ends of the auxiliary lifting frame 20, so as to prevent the main lifting frame 10 and the auxiliary lifting frame 20 from shaking and making noise when the workpiece 50 lifting and turning fixture is transferred.

[0058] Preferably, the lower end of the locking post 82 can be hook-shaped with the hook facing downwards, so that when the locking ring 81 is fitted onto the locking post 82, the locking ring 81 can be anchored into the hook of the locking post 82, thus preventing the locking ring 81 from easily coming loose.

[0059] Preferably, a counterweight 15 can be provided on the side of the lower end of the main lifting frame away from the auxiliary lifting frame. This ensures that the counterweights on both sides of the main lifting frame are balanced when the workpiece lifting and turning fixture lifts the workpiece (i.e., the auxiliary lifting frame and the counterweight are balanced on both sides of the lower end of the main lifting frame), thus preventing the main lifting frame from tilting during lifting.

[0060] It should be noted that: the embodiments of the present invention can also realize the workpiece being flipped from the first side facing upward to the second side facing upward, the specific process being the reverse process of flipping the second side facing upward to the first side facing upward as described above.

[0061] The embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A workpiece lifting and flipping fixture, characterized in that, include: The main hoisting frame (10) has multiple second hoisting points (11) at its lower end; The auxiliary lifting frame (20) is located below the main lifting frame (10) on one side, and the auxiliary lifting frame (20) has a third lifting point (21) below it; A movable pulley assembly (30) is located between the main lifting frame (10) and the auxiliary lifting frame (20) and connects the two, and the movable pulley assembly (30) includes an auxiliary sling (31) and the auxiliary sling (31) has a traction end; Multiple second lifting points (11) are respectively connected to the first side (51) of the workpiece (50) via first sub-slings (41), and the third lifting point (21) is connected to the second side (52) of the workpiece (50) via second sub-slings (42). The first side (51) and the second side (52) are two adjacent sides of the workpiece (50). The main lifting frame (10) is raised, and the workpiece (50) is lifted into the air with its second side (52) facing upward by the second sub-sling (42) and at least one first sub-sling (41). Then the auxiliary lifting frame (20) is lowered until the workpiece (50) is lifted into the air with its first side (51) facing upward by multiple first sub-slings (41), so as to achieve the flipping of the workpiece (50).

2. The workpiece lifting and turning fixture according to claim 1, characterized in that, The upper end of the main hoisting frame (10) has multiple first hoisting points (12).

3. The workpiece lifting and turning fixture according to claim 2, characterized in that, Also includes: The first hook (60) is located above the main lifting frame (10) and is connected to a plurality of first lifting points (12) via a main lifting cable (43).

4. The workpiece lifting and turning fixture according to claim 1, characterized in that, Also includes: The locking element (80) includes a locking ring (81) and a locking pin (82); The locking post (82) is installed on the side wall of the auxiliary lifting frame (20); The locking ring (81) is rotatably mounted below the main hoisting frame (10); When the auxiliary lifting frame (20) moves upward to the reset position, the locking ring (81) can rotate to be sleeved on the locking post (82) to limit the auxiliary lifting frame (20) relative to the main lifting frame (10).

5. The workpiece lifting and turning fixture according to claim 1, characterized in that, The movable pulley assembly (30) also includes: A fixed pulley (32) is provided on the corresponding side at the lower end of the main hoisting frame (10); A movable pulley (33) is installed on the auxiliary lifting frame (20); One end of the auxiliary sling (31) is connected to the main lifting frame (10) and passes around the movable pulley (33) and the fixed pulley (32), while the other end of the auxiliary sling (31) is the traction end.

6. The workpiece lifting and turning fixture according to claim 5, characterized in that, The upper end of the auxiliary hoisting frame (20) is recessed with a first receiving groove (22), and the movable pulley (33) is installed in the first receiving groove (22).

7. The workpiece lifting and turning fixture according to claim 5 or 6, characterized in that, The main hoisting frame (10) has a through mounting hole (13) in the middle, and a guide wheel (14) is installed in the mounting hole (13). The traction end of the auxiliary sling (31) passes around the guide wheel (14) to turn upward.

8. The workpiece lifting and turning fixture according to claim 5 or 6, characterized in that, Multiple fixed pulleys (32) and multiple movable pulleys (33) are provided.

9. The workpiece lifting and turning fixture according to claim 7, characterized in that, Also includes: The second hook (70) is located above the main lifting frame (10) and is connected to the traction end of the auxiliary sling (31).

10. The workpiece lifting and turning fixture according to claim 7, characterized in that, Also includes: A sling (90) is provided at the upper end of the main hoisting frame (10) for winding up the traction end of the auxiliary sling (31).

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