Elevator switching lifting hook

Abstract

The utility model belongs to the field of lifting hooks, and particularly relates to an elevator switching lifting hook. In order to solve the problems that as a hydraulic elevator in the prior art is not suitable for milling, sand washing or sucker rod lifting operation, the hydraulic elevator needs to be detached and a non-automatic elevator needs to be replaced when the operation is carried out, and after the operation is completed, the non-automatic elevator needs to be detached and replaced with the hydraulic elevator; in order to solve the technical problems of high labor intensity and time waste in the prior art, the utility model provides the elevator switching lifting hook. The elevator switching lifting hook comprises a lifting hook body, the lifting hook body is provided with a clamped part used for being clamped by the hydraulic elevator and a stopping part located above the clamped part and used for being matched with the hydraulic elevator in a stopping mode in the vertical direction, and a lifting structure used for hanging the non-automatic elevator is hinged to the lifting hook body. The hydraulic elevator and the non-automatic elevator are switched through the elevator switching lifting hook, the operation can be conveniently carried out, meanwhile, the hydraulic elevator does not need to be mounted and dismounted, the labor intensity can be effectively reduced, and time can be effectively saved.

Description

Technical Field

[0001] The utility model belongs to the field of lifting hooks, and particularly relates to a lifting clamp conversion lifting hook. Background Art

[0002] A lifting clamp is an important device for suspending drill pipes, tubing, casing, drill collars and other pipe strings, and its performance directly affects the efficiency and safety of drilling operations and workover operations. When the lifting clamp first appeared, all lifting clamps were non-automatic lifting clamps that could not adapt to automated operations, resulting in a high labor intensity for workers. Therefore, hydraulic lifting clamps that can adapt to automated operations have been proposed in the prior art.

[0003] For example, a Chinese invention patent application with the publication number CN115680518A and the publication date of February 3, 2023 discloses a multifunctional flip-type hydraulic lifting clamp. This hydraulic lifting clamp is specifically used for clamping pipe strings such as drill pipes, tubing, casing, and drill collars, and can adapt to automated operations, thereby effectively reducing the labor intensity of workers.

[0004] To reduce the labor intensity of workers, the equipment at the oil well was upgraded. Specifically, the above-mentioned hydraulic lifting clamp was used to replace the non-automatic lifting clamp. However, during the actual use of the above-mentioned hydraulic lifting clamp, the staff found that since the above-mentioned hydraulic lifting clamp is specifically used for clamping pipe strings with a relatively single outer diameter size, when performing operations such as milling, sand washing, or tripping the sucker rod, the above-mentioned hydraulic lifting clamp cannot fix a thinner sucker rod or a safety rope tied to the swivel hose and the sand washing elbow. Therefore, when performing operations such as milling, sand washing, or tripping the sucker rod, it is necessary to remove the hydraulic lifting clamp and replace it with a corresponding non-automatic lifting clamp. After the operation is completed, it is also necessary to remove the non-automatic lifting clamp and replace it with a hydraulic lifting clamp, resulting in a high labor intensity and a waste of time. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a lifting clamp conversion lifting hook to solve the technical problem that because the hydraulic lifting clamp in the prior art is not applicable to operations such as milling, sand washing, or tripping the sucker rod, it is necessary to remove the hydraulic lifting clamp and replace it with a non-automatic lifting clamp when performing operations such as milling, sand washing, or tripping the sucker rod, and it is also necessary to remove the non-automatic lifting clamp and replace it with a hydraulic lifting clamp after the operation is completed, resulting in a high labor intensity and a waste of time.

[0006] To achieve the above purpose, the technical solution of a lifting clamp conversion lifting hook provided by the utility model is as follows:

[0007] A lifting clamp conversion lifting hook includes a hook body. The hook body is provided with a clamped portion for being clamped by a hydraulic lifting clamp and a stop portion located above the clamped portion and used for making a stop fit with the hydraulic lifting clamp in the up and down direction. A lifting structure for suspending a non-automatic lifting clamp is hinged to the part of the hook body below the clamped portion;

[0008] The hook body successively has a large-diameter cylindrical section, a small-diameter cylindrical section and a flat plate section from top to bottom. The large-diameter cylindrical section constitutes the stop portion, the small-diameter cylindrical section constitutes the clamped portion, and the lifting structure is hinged on the flat plate section.

[0009] The lifting structure is a lifting ring, which includes a hinged portion for hinging with the hook body, a suspension portion for suspending a non-automatic elevating work string catcher, and a connecting portion connecting the hinged portion and the suspension portion.

[0010] Furthermore, the hook body is integrally formed.

[0011] The beneficial effects of the elevating work string catcher conversion hook of the present utility model are as follows: The present utility model is an innovative invention. When using the elevating work string catcher conversion hook in the technical solution, the hydraulic elevating work string catcher can clamp the clamped portion, and the stop portion is located above the hydraulic elevating work string catcher and is in stop cooperation with the hydraulic elevating work string catcher in the up and down direction, so as to ensure that the hydraulic elevating work string catcher can fix the hook body; a lifting structure is hinged at the lower end of the hook body, and a corresponding non-automatic elevating work string catcher is suspended through the lifting structure, so that operations such as milling, sand washing or tripping the sucker rod can be carried out by using the corresponding non-automatic elevating work string catcher. When performing different operations, only different non-automatic elevating work string catchers need to be used, and during the whole operation process, it is not necessary to disassemble and assemble the hydraulic elevating work string catcher, which can effectively reduce the labor intensity and save the operation time.

[0012] To achieve the above object, another technical solution of the elevating work string catcher conversion hook provided by the present utility model is as follows:

[0013] An elevating work string catcher conversion hook, characterized by comprising a hook body, on which there is a clamped portion for being clamped by a hydraulic elevating work string catcher and a stop portion located above the clamped portion and for being in stop cooperation with the hydraulic elevating work string catcher in the up and down direction. A lifting structure for suspending a non-automatic elevating work string catcher is hinged on the portion of the hook body below the clamped portion;

[0014] The hook body successively has a large-diameter cylindrical section, a small-diameter cylindrical section and a flat plate section from top to bottom. The large-diameter cylindrical section constitutes the stop portion, and the small-diameter cylindrical section constitutes the clamped portion;

[0015] The lifting structure is a lifting ring, which includes a hinged portion for hinging with the hook body, a suspension portion for suspending a non-automatic elevating work string catcher, and a connecting portion connecting the hinged portion and the suspension portion;

[0016] The elevating work string catcher conversion hook further includes a connecting pin shaft. The hook body is provided with an installation through hole extending in the horizontal direction. The connecting pin shaft is fixedly installed in the installation through hole, and at least one end of the connecting pin shaft in the axial direction is located outside the installation through hole. A hinged portion is provided on the portion of the connecting pin shaft located outside the installation through hole, and the lifting structure is hinged on the hinged portion.

[0017] Furthermore, the elevator adapter hook further includes a connecting pin shaft. The hook body is provided with an installation through-hole extending in the horizontal direction. The connecting pin shaft is fixedly installed in the installation through-hole, and at least one end of the connecting pin shaft in the axial direction is located outside the installation through-hole. An articulated portion is provided on the portion of the connecting pin shaft located outside the installation through-hole, and the lifting structure is articulated on the articulated portion.

[0018] Furthermore, both ends of the connecting pin shaft in the axial direction are located outside the installation through-hole, and articulated portions are provided on both ends of the connecting pin shaft located outside the installation through-hole. The lifting structure is articulated and connected to the articulated portions at both ends of the connecting pin shaft.

[0019] Furthermore, the elevator adapter hook further includes a rotation prevention pin shaft. The hook body is provided with a rotation prevention through-hole extending in the horizontal direction. The rotation prevention pin shaft is fixedly installed in the rotation prevention through-hole. Both ends of the rotation prevention pin shaft in the axial direction are located outside the fixed through-hole, and one end of the rotation prevention pin shaft in the axial direction is fixedly connected to one end of the connecting pin shaft in the axial direction through a connecting member, and the other end of the rotation prevention pin shaft in the axial direction is fixedly connected to the other end of the connecting pin shaft in the axial direction through another connecting member.

[0020] Furthermore, a limiting groove for limiting the lifting structure is provided on the connecting pin shaft, and the limiting groove constitutes the articulated portion.

[0021] Furthermore, a locking through-hole communicating the installation through-hole and the outside is further provided on the hook body. A fixing hole is provided on the connecting pin shaft. A locking pin is fixedly installed in the locking through-hole and one end of the locking pin is inserted into the fixing hole to lock the position of the connecting pin shaft.

[0022] Furthermore, the locking through-hole extends in the vertical direction.

[0023] Furthermore, a lifting ring fixedly installed on the hook body is provided at the top of the hook body.

[0024] Furthermore, the hook body is integrally formed.

[0025] The beneficial effects of the elevator adapter hook of the present utility model are as follows: The present utility model is a pioneering invention. When using the elevator adapter hook in the present technical solution, the hydraulic elevator can clamp the clamped portion, and the stopping portion is located above the hydraulic elevator and is in a stopping fit with the hydraulic elevator in the up and down direction, so as to ensure that the hydraulic elevator can fix the hook body; the lifting structure is articulated at the lower end of the hook body, and the corresponding non-automatic elevator is suspended through the lifting structure, so that operations such as milling, sand washing, or pulling and running sucker rods can be carried out by using the corresponding non-automatic elevator. When performing different operations, only different non-automatic elevators need to be used, and during the whole operation process, it is not necessary to disassemble and assemble the hydraulic elevator, which can effectively reduce the labor intensity and save the operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1Schematic structural view of the lifting clamp conversion hook in the present utility model after being clamped by a hydraulic lifting clamp;

[0027] Figure 2 Front view schematic of the lifting clamp conversion hook in the present utility model;

[0028] Figure 3 Left view schematic of the lifting clamp conversion hook in the present utility model.

[0029] Explanation of reference numerals:

[0030] 1. Hydraulic lifting clamp; 2. Lifting clamp conversion hook; 3. Lifting ring; 41. Large-diameter cylindrical section; 42. Small-diameter cylindrical section; 43. Flat section; 5. Anti-rotation pin shaft; 6. Bolt; 71. Hinge part; 72. Connection part; 73. Suspension part; 8. Connection pin shaft; 81. Limit groove; 9. Connecting piece; 10. Locking pin. Detailed implementation manners

[0031] To solve the problems in the background art, the core inventive concept of the present utility model is: using a lifting clamp conversion hook to realize the transfer between a hydraulic lifting clamp and a non-automatic lifting clamp, so as to use the corresponding non-automatic lifting clamp to perform corresponding operations such as milling, sand washing, or rod running and pulling.

[0032] Taking the rod running and pulling operation as an example, for the present utility model, it should be particularly noted that the first-generation hydraulic lifting clamp cannot clamp the sucker rod. Even if the first-generation hydraulic lifting clamp is upgraded in the future so that the second-generation hydraulic lifting clamp can clamp the sucker rod, the existing first-generation hydraulic lifting clamps still cannot clamp the sucker rod. At the same time, the first-generation hydraulic lifting clamps have not reached the service life. In order to effectively utilize the first-generation hydraulic lifting clamps, the present utility model proposes a lifting clamp conversion hook for transferring the first-generation hydraulic lifting clamps and non-automatic lifting clamps.

[0033] The following further describes the present utility model in detail with reference to embodiments.

[0034] Specific embodiments of the lifting clamp conversion hook provided by the present utility model:

[0035] As Figures 1-3 shown, the lifting clamp conversion hook 2 includes a hook body. The hook body is provided with a clamped portion for being clamped by the hydraulic lifting clamp 1 and a stop portion located above the clamped portion and used for stop cooperation with the hydraulic lifting clamp 1 in the up and down direction. A lifting structure for suspending a non-automatic lifting clamp is hinged on the part of the hook body below the clamped portion.

[0036] Specifically, as Figures 1-3As shown in the figure, for the purpose of simplifying the structure, as a specific embodiment, the hook body is integrally formed with high structural strength. The hook body successively has a large-diameter cylindrical section 41, a small-diameter cylindrical section 42, and a flat plate section 43 from top to bottom. The large-diameter cylindrical section 41 constitutes the stop portion, the small-diameter cylindrical section 42 constitutes the clamped portion, and the lifting structure is hinged on the flat plate section 43. The structure is simple, and the provision of the flat plate section 43 facilitates the hinging of the lifting structure on the hook body. Specifically, in the direction perpendicular to the hinge axis of the lifting structure and the flat plate hinge, the cross-section of the flat plate section 43 is fan-shaped (i.e., the shape of the fan surface of a fan), which facilitates the hinging of the lifting structure on the flat plate section 43. However, in other specific embodiments, in the direction perpendicular to the hinge axis of the lifting structure and the flat plate hinge, the cross-section of the flat plate section 43 can also be rectangular. In this embodiment, the shape of the cross-section of the flat plate section 43 is not limited.

[0037] In other specific embodiments, the hook body can also be a split structure.

[0038] When using the lifting clamp conversion hook 2 in this technical solution, the hydraulic lifting clamp 1 can clamp the clamped portion, and the stop portion is located above the hydraulic lifting clamp 1 and is in stop cooperation with the hydraulic lifting clamp 1 in the up and down direction, so as to ensure that the hydraulic lifting clamp 1 can fix the hook body; the lifting structure is hinged at the lower end of the hook body, and the corresponding non-automatic lifting clamp is suspended through the lifting structure, so that operations such as milling, sand washing, or tripping the sucker rod can be carried out using the corresponding non-automatic lifting clamp. When performing different operations, only different non-automatic lifting clamps need to be used, and the hydraulic lifting clamp 1 does not need to be disassembled and assembled during the whole operation process, which can effectively reduce the labor intensity and save the operation time.

[0039] As Figures 2-3 shown, for the purpose of facilitating the processing of the hook body, as a specific embodiment, the lifting clamp conversion hook 2 further includes a connecting pin 8. The hook body is provided with an installation through hole extending in the horizontal direction. The connecting pin 8 is fixedly installed in the installation through hole, and at least one end of the connecting pin 8 in the axial direction is located outside the installation through hole. An articulated portion is provided on the portion of the connecting pin 8 located outside the installation through hole, and the lifting structure is hinged on the articulated portion. The hook body and the connecting pin 8 are of a split structure, and the hook body and the lifting structure are hinged and connected by using the connecting pin 8. The connecting pin 8 and the hook body can be manufactured separately during manufacturing, which is convenient for processing the hook body.

[0040] Specifically, in order to enhance the stability of the structure, as a specific implementation manner, both axial ends of the connecting pin shaft 8 are located outside the mounting through-hole, and hinge portions are provided at both ends of the connecting pin shaft 8 located outside the mounting through-hole. The hoisting structure is hinged to the hinge portions at both ends of the connecting pin shaft 8, so that the number of hinge positions between the hoisting structure and the connecting pin shaft 8 can be increased, and the stability of the lifting hook conversion hook 2 can be improved. At the same time, the hook body, the connecting pin shaft 8 and the hoisting structure can be made into a symmetric structure, and the centers of gravity of the hoisting structure and the hook body are located on the same vertical line, so as to further improve the stability of the lifting hook conversion hook 2.

[0041] However, in other specific implementation manners, the connecting pin shaft 8 can also be integrally formed with the hook body, that is, connecting shafts protrude from both end faces of the flat plate section 43 of the hook body, and the hoisting structure is hinged to the connecting shafts. Or, only one end of the connecting pin shaft 8 is located outside the mounting through-hole, and the hoisting structure is hinged to the hinge portion at the end of the connecting pin shaft 8 located outside the mounting through-hole. At this time, the center of gravity of the hook body and the center of the hoisting structure are no longer on the same vertical line. After hoisting the corresponding non-automatic lifting hook by using the hoisting structure, the position of the hydraulic lifting hook 1 is adjusted to adjust the positions of the hook body and the hoisting structure to ensure that the corresponding non-automatic lifting hook is in the best working position. In this embodiment, the hinging manner between the hoisting structure and the hook body is not limited.

[0042] As Figure 2 shown, in order to prevent the connecting pin shaft 8 from falling off the hook body, prevent the connecting pin shaft 8 from rotating and extend the service life of the lifting hook conversion hook 2, as a specific implementation manner, the lifting hook conversion hook 2 further includes a rotation prevention pin shaft 5. A rotation prevention through-hole extending in the horizontal direction is provided on the hook body. The rotation prevention pin shaft 5 is fixedly installed in the rotation prevention through-hole. Both axial ends of the rotation prevention pin shaft 5 are located outside the fixed through-hole, and one axial end of the rotation prevention pin shaft 5 is fixedly connected to one axial end of the connecting pin shaft 8 through a connecting member 9, and the other axial end of the rotation prevention pin shaft 5 is fixedly connected to the other axial end of the connecting pin shaft 8 through another connecting member 9. Specifically, the connecting member 9 is a crescent-shaped locking arm, and the connecting member 9 is fixedly connected to the rotation prevention pin shaft 5 and the connecting pin shaft 8 through bolts 6 and nuts. However, in other specific implementation manners, the connecting member 9 can also be a connecting plate or a connecting rod, and the connecting member 9 can be fixedly connected to the rotation prevention pin shaft 5 and the connecting pin shaft 8 by pin connection, clamping connection or welding.

[0043] The two connecting pieces 9 can fixedly connect the two ends of the anti-rotation pin shaft 5 and the two ends of the connecting pin shaft 8 respectively. When the connecting pin shaft 8 wants to rotate, the connecting pin shaft 8 exerts a rotational force on the anti-rotation pin shaft 5 through the connecting piece 9, which makes the anti-rotation pin shaft 5 want to rotate with the connecting pin shaft 8 as the rotation axis. At this time, the hook body is in a stop fit with the anti-rotation pin shaft 5. Therefore, the anti-rotation pin shaft 5 will exert a reaction force on the connecting pin shaft 8 through the connecting piece 9, thereby preventing the connecting pin shaft 8 from rotating. At the same time, when the connecting pin shaft 8 moves axially along itself to a certain extent, the connecting piece 9 can be in a stop fit with the hook body, thereby preventing the connecting pin shaft 8 from falling off the hook body and ensuring safety.

[0044] Of course, compared with the technical solution of only setting the connecting pin shaft 8, when additionally setting the anti-rotation pin shaft 5 fixedly connected to the connecting pin shaft 8, when the pressure exerted by the lifting structure on the connecting pin shaft 8 is certain, when only the connecting pin shaft 8 is set, the contact area between the connecting pin shaft 8 and the hook body is small, and the pressure between the connecting pin shaft 8 and the hook body is large; when both the connecting pin shaft 8 and the anti-rotation pin shaft 5 are set, since the connecting pin shaft 8 and the anti-rotation pin shaft 5 are fixedly connected, the pressure exerted by the lifting structure on the connecting pin shaft 8 and the anti-rotation pin shaft 5 is equal to the pressure exerted by the lifting structure on the connecting pin shaft 8 when only the connecting pin shaft 8 is set. Since the total contact area between the connecting pin shaft 8 and the anti-rotation pin shaft 5 and the hook body is much larger than the contact area between the connecting pin shaft 8 and the hook body, the pressure between the connecting pin shaft 8 and the hook body can be effectively reduced, and the service life of the lifting and clamping conversion hook 2 can be improved.

[0045] However, in other specific embodiments, only the connecting pin shaft 8 can be set, and the connecting pin shaft 8 can be fixedly welded to the hook body to prevent the connecting pin shaft 8 from rotating.

[0046] As Figures 2-3 shown, in order to make the lifting structure better articulated on the connecting pin shaft 8, as a specific embodiment, a limiting groove 81 for limiting the lifting structure is provided on the connecting pin shaft 8, and the limiting groove 81 constitutes the articulated part, thereby preventing the lifting structure from detaching from the connecting pin shaft 8 and avoiding the risk of the lifting structure falling off the connecting pin shaft 8 during use.

[0047] However, in other specific embodiments, external threads can also be provided on the axial end of the connecting pin shaft 8 outside the installation through-hole (it can be one end outside the installation through-hole or both ends outside the installation through-hole), and nuts threadedly connected to the above external threads are used to prevent the lifting structure from falling off the connecting pin shaft 8.

[0048] As Figures 2-3As shown, in order to prevent the connecting pin shaft 8 from axially moving along its own axis and further prevent the connecting pin shaft 8 from rotating, as a specific implementation, a locking through hole communicating with the installation through hole and the outside is further provided on the hook body. A fixing hole is provided on the connecting pin shaft 8. A locking pin 10 with one end inserted into the fixing hole to lock the position of the connecting pin shaft 8 is fixedly installed in the locking through hole. The locking through hole extends in the vertical direction, so as to facilitate the insertion of the locking pin 10 into the locking through hole. The axial position of the connecting pin shaft 8 can be conveniently locked by the locking pin 10 with one end inserted into the fixing hole of the connecting pin shaft 8, preventing the connecting pin shaft 8 from axially moving. At the same time, it can also prevent the connecting pin shaft 8 from rotating along its own axis. When the locking pin 10 and the anti-rotation pin shaft 5 are both provided, when the connecting pin shaft 8 wants to rotate, the anti-rotation pin shaft 5 can prevent the acting force between the locking pin 10 and the connecting pin shaft 8 from being too large and prevent the locking pin 10 from being broken.

[0049] However, in other specific implementations, the locking pin 10 may not be provided. When both ends of the connecting pin shaft 8 are outside the installation through hole, after the connecting pin shaft 8 is installed in the installation through hole, a retaining ring that is axially stop-fitted with the hook body along the connecting pin shaft 8 is fixedly installed on the part of the connecting pin shaft 8 outside the installation through hole by pin connection, screw connection, welding or other means, and the retaining ring is used to prevent the connecting pin shaft 8 from axially moving along its own axis. In other specific implementations, the locking through hole may also have a certain angle with both the horizontal plane and the vertical plane. At this time, the locking pin 10 needs to be obliquely inserted into the locking through hole.

[0050] As Figures 2-3 shown, in order to simplify the structure, as a specific implementation, the lifting structure is a lifting ring. The lifting ring includes a hinged part 71 for hinging with the hook body, a suspension part 73 for suspending a non-automatic lifting clamp, and a connecting part 72 connecting the hinged part 71 and the suspension part 73, with a simple structure. Specifically, in this embodiment, the lifting ring is integrally formed, and the lifting structure includes two lifting rings. The hinged part 71 has a hinged ring for hinging with the connecting pin shaft 8. The suspension part 73 has a suspension ring for suspending a non-automatic lifting clamp. The suspension ring can be Figures 2-3 the closed ring shown, or a discontinuous open ring with a notch, as long as the notch can ensure that the non-automatic lifting clamp will not fall out from the notch.

[0051] Referring to Figures 2-3 shown, in different specific implementations, when adapting to different non-automatic lifting clamps, the number of lifting rings can also be one; or, referring to Figures 2-3 shown, the Figure 2 connecting parts 72 of the two lifting rings are connected into one body, so as to obtain an integrally formed lifting structure; or, referring to Figures 2-3 shown, in Figure 2On the premise that the connecting parts 72 of the two suspension rings in [[ ]] are connected as a whole, the hinged part 71 of one of the suspension rings is omitted, and only the other suspension ring is hinged to the connecting pin shaft 8, so as to form a hoisting structure.

[0052] As Figures 1-3 shown, in order to conveniently complete the installation and disassembly of the lifting clamp conversion hook 2, as a specific implementation manner, a lifting ring 3 fixedly installed on the hook body is provided at the top of the hook body. Through the lifting ring 3, the lifting clamp conversion hook 2 can be conveniently lifted. During use, the lifting clamp conversion hook 2 can be conveniently set at a predetermined position, and the hydraulic lifting clamp 1 is used to clamp the clamped part to complete the installation of the lifting clamp conversion hook 2; at the same time, after use, the lifting clamp conversion hook 2 can be conveniently lifted away to complete the disassembly of the lifting clamp conversion hook 2.

[0053] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An elevator conversion hook, characterized in that: The hook body comprises a clamped portion for clamping by a hydraulic elevator and a stopper portion located above the clamped portion and used to stop the hydraulic elevator in the up and down directions, and a hoisting structure for suspending a non-automated elevator is hingedly connected to a portion of the hook body located below the clamped portion; The hook body has a large diameter cylindrical section, a small diameter cylindrical section and a flat plate section from top to bottom, the large diameter cylindrical section constitutes the stopper, the small diameter cylindrical section constitutes the clamped portion, and the lifting structure is hinged on the flat plate section; The lifting structure is a lifting ring, which includes an articulated part for being articulated with a hook body, a hanging part for hanging a non-automated lifting card, and a connecting part connecting the articulated part and the hanging part.

2. The elevator conversion hook according to claim 1, characterized in that: The hook body is integrally formed.

3. An elevator conversion hook, characterized in that: The hook body comprises a clamped portion for clamping by a hydraulic elevator and a stopper portion located above the clamped portion and used to stop the hydraulic elevator in the up and down directions, and a hoisting structure for suspending a non-automated elevator is hingedly connected to a portion of the hook body located below the clamped portion; The hook body has a large diameter cylindrical section, a small diameter cylindrical section and a flat plate section from top to bottom, the large diameter cylindrical section constitutes the stopper, and the small diameter cylindrical section constitutes the clamped section; The lifting structure is a lifting ring, which includes a hinged portion for hinged connection with a hook body, a suspension portion for suspending a non-automated elevator, and a connecting portion connecting the hinged portion and the suspension portion; The lifting card conversion hook also includes a connecting pin, a mounting through hole extending in a horizontal direction is provided on the hook body, the connecting pin is fixedly installed in the mounting through hole, and at least one axial end of the connecting pin is located outside the mounting through hole, a hinged portion is provided on the portion of the connecting pin located outside the mounting through hole, and the lifting structure is hinged on the hinged portion.

4. The elevator conversion hook according to claim 3, characterized in that: Both axial ends of the connecting pin shaft are located outside the mounting through hole, and both ends of the connecting pin shaft located outside the mounting through hole are provided with hinged parts, and the lifting structure is hingedly connected to the hinged parts at both ends of the connecting pin shaft.

5. The elevator conversion hook according to claim 4, characterized in that: The lifting card conversion hook also includes a stop pin shaft, a stop through hole extending in the horizontal direction is provided on the hook body, the stop pin shaft is fixedly installed in the stop through hole, both axial ends of the stop pin shaft are located outside the fixed through hole, and one axial end of the stop pin shaft is fixedly connected to one axial end of the connecting pin shaft through a connecting piece, and the other axial end of the stop pin shaft is fixedly connected to the other axial end of the connecting pin shaft through another connecting piece.

6. The elevator conversion hook according to any one of claims 3 to 5, characterized in that: A limiting groove for limiting the lifting structure is arranged on the connecting pin shaft, and the limiting groove constitutes the hinged part.

7. The elevator conversion hook according to any one of claims 3 to 5, characterized in that: The hook body is also provided with a locking through hole communicating with the installation through hole and the outside, the connecting pin shaft is provided with a fixing hole, and a locking pin with one end inserted into the fixing hole to lock the position of the connecting pin shaft is fixedly installed in the locking through hole.

8. The elevator conversion hook according to claim 7, characterized in that: The locking through hole extends in a vertical direction.

9. The elevator conversion hook according to any one of claims 3 to 5, characterized in that: A lifting ring fixedly installed on the hook body is arranged on the top of the hook body.

10. The elevator conversion hook according to any one of claims 3 to 5, characterized in that: The hook body is integrally formed.

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