Angle-adjustable sleeve hoisting tool

Abstract

The invention discloses an angle-adjustable casing pipe hoisting tool, and relates to the technical field of casing pipe hoisting tools, the angle-adjustable casing pipe hoisting tool comprises two angle-adjustable hoisting tools, a hoisting rope and a hoisting piece, the two hoisting tools are fixedly installed at the two ends of a casing pipe respectively, and the hoisting ends of the two hoisting tools are movably connected to the two ends of the hoisting rope respectively; according to the lifting appliance, the included angle between the lifting end of the lifting appliance and the casing pipe can be adjusted through the adjustable lifting appliance, so that when the casing pipe is inclined, the lifting end of the lifting appliance and the lifting rope are located on the same straight line, and the lifting appliance is convenient to use. Not only can the lifting end of the lifting appliance be prevented from being damaged due to larger shearing force, but also the inclination angle of the sleeve can be conveniently adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of casing hoisting tools, and in particular to an angle-adjustable casing hoisting tool. Background Art

[0002] At present, the hoisting of the insulating bushing of the main transformer of 220kV or even higher level requires installing the insulating bushing weighing about 2 tons at a height of 7 to 8 meters at an angle of 30 to 60 degrees to the horizontal, and the accuracy must be controlled within 2 mm. The work is very difficult, and the labor, vehicle and time costs are very high.

[0003] In the prior art, CN202011579985.X is an adjustable angle main transformer insulating sleeve hoisting fixture, which includes two connected clamps, one clamp is rotatably connected to a fixed hanger, and the other clamp is rotatably connected to an adjustable hanger, and hooks are installed on the fixed hanger and the adjustable hanger. When the main transformer insulating sleeve is hoisted, the two clamps are put on the main transformer insulating sleeve, the clamps hold the main transformer insulating sleeve tightly, and then the fixed and adjustable hangers are hoisted by a crane, and the two hooks are respectively connected to the lifting rope, the main transformer insulating sleeve is hoisted to a certain height, and then the turntable is rotated to adjust the inclination angle of the main transformer insulating sleeve. When the angle is adjusted, the rotating shaft and the turntable rotate together, thereby driving the rotating sleeve to rotate through the transmission assembly, and the rotating sleeve is also driven to connect the installation shaft, so as to realize the rotation of the installation shaft, and then adjust the angle of the clamp connected to the installation shaft, so as to realize the adjustment of the inclination angle of the main transformer insulating sleeve.

[0004] However, since the insulating sleeve is heavy, the insulating sleeve is tilted at an angle driven by the clamp, which will cause the center of gravity of the insulating sleeve to shift. When the center of gravity shifts a certain distance, the insulating sleeve will tilt together with the fixed hanger and the adjustable hanger on the two clamps, making it difficult to adjust the tilt angle of the insulating sleeve. In addition, the two hooks are respectively connected to the lifting rope, which increases the difficulty of lifting. If it is lifted by a lifting vehicle, the lifting ropes on the two hooks are relatively close, making it difficult to control the rotation of the sleeve in the air, thereby causing the lifting ropes on the two hooks to be entangled. Summary of the invention

[0005] In view of the above shortcomings, the present invention provides an adjustable angle sleeve lifting tool, which can solve the problems that the insulating sleeve will tilt together with the fixed hanger and the adjusting hanger on the two clamps, making it difficult to adjust the tilt angle and making the lifting difficult.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] An adjustable angle casing lifting tool comprises two adjustable angle lifting tools, a lifting rope and a lifting piece, wherein the two lifting tools are respectively fixedly mounted on the two ends of the casing, the two lifting ends of the lifting tools are respectively movably connected to the two ends of the lifting rope, both ends of the lifting rope and the connecting end of the lifting tools are provided with binding parts for fixing the lifting rope, and the lifting piece is movably connected to the lifting rope.

[0008] Through the above scheme, the angle between the lifting end of the lifter and the casing can be adjusted by the adjustable lifter, so that when the casing is tilted, the lifting end of the lifter and the lifting rope are located in the same straight line, which can not only prevent the lifting end of the lifter from being damaged by a large shear force, but also facilitate the adjustment of the tilt angle of the casing. By connecting the two adjustable lifters through the lifting parts and the lifting rope, the casing can be lifted by a lifting vehicle, and because the angle between the lifting ropes on the two lifts is large, the casing can be prevented from rotating in the air.

[0009] Furthermore, a connecting rod is rotatably connected to the lifting end of the sling, and two limit platforms are provided on the connecting rod for limiting the position of the lifting rope. A first sharp tooth is provided on the connecting rod in the middle of the limit platform, and a handle is provided on one end of the connecting rod passing through one side of the lifting end of the sling.

[0010] Through the above further scheme, a handle is provided at one end of the connecting rod, and the length of the sling rope between the slings can be adjusted by simply rotating the connecting rod. A first sharp tooth is provided on the connecting rod, and the first sharp tooth is inserted into the sling rope. When the connecting rod rotates, the sling rope can be driven to rotate together through the first sharp tooth, thereby adjusting the length of the sling rope between the slings, and the sling rope can be fixed in place when the connecting rod does not rotate.

[0011] Furthermore, the binding device includes a bundle frame and a clamping plate, a through slot for the passage of a lifting rope is provided in the middle of the bundle frame, one end of the lifting rope passes through the through slot from one end of the bundle frame, is wrapped around a connecting rod, and passes through the through slot to the outside from the other end of the bundle frame, and the bundle frame is provided with a mounting slot on one side of the end of the lifting rope, and a slot is provided on the mounting slot, and the slot is communicated with the through slot, and a clamping plate is rotatably connected to the mounting slot, and a plurality of fixing pins are provided on the side of the clamping plate facing the slot, and the position of the fixing pins corresponds to the position of the slot, and the fixing pins are used to fix the end of the lifting rope.

[0012] Through the above-mentioned further scheme, the multiple fixing pins on the pallet are in contact with the end of the lifting rope, so the lifting rope can be effectively fixed to prevent it from loosening or sliding during the lifting process, thereby greatly enhancing the safety of the lifting. The lifting rope can be easily inserted into the bundle frame through the through groove and quickly fixed by the fixing pins on the pallet. The whole process is simple and fast, and no complicated tools or steps are required. If the length of the lifting rope needs to be readjusted, only the pallet needs to be opened, adjusted and fixed again, which is very convenient.

[0013] Furthermore, the hanging part includes a hook and a connecting roller, the hook is fixedly connected to the connecting roller through a fixing plate, the connecting roller is rotatably connected to the fixing plate, one end of the hanging rope passes through the middle of the hook and the connecting roller and is connected to the connecting rod, and the connecting roller is movably connected to the hanging rope.

[0014] Through the above further solution, the connecting roller can rotate freely on the fixed plate, so that the angle of the lifting rope can be freely adjusted along with the movement of the connecting roller during the lifting process, thereby improving the flexibility of the lifting.

[0015] Furthermore, a second sharp tooth is provided in the middle of the connecting roller.

[0016] Through the above-mentioned further scheme, the second sharp teeth can increase the friction between the lifting rope and the connecting roller, prevent the lifting rope from sliding due to external factors (such as wind, vibration, etc.) during the lifting process, and ensure the stability and reliability of the lifting rope. The design of the sharp teeth can fix the lifting rope at multiple points, and the lifting rope can remain stable even when the force is uneven, reducing the safety hazards caused by the sliding of the lifting rope.

[0017] Furthermore, a limiting arc plate is provided on one side of the fixing plate and above the connecting roller.

[0018] Through the above-mentioned further scheme, the limiting arc plate acts as a physical barrier, which can effectively prevent the lifting rope from falling off the second tine on the connecting roller due to accidental impact or violent shaking during the lifting process, thereby increasing the safety of the lifting. The limiting arc plate works together with the connecting roller and the second tine to form a multiple protection mechanism, further improving the safety of the lifting system.

[0019] Furthermore, a motor is fixedly mounted on the side of the fixed plate away from the hook, a worm is fixedly mounted on the motor output shaft, the worm is fixedly mounted on the fixed plate via a mounting member, the worm is rotatably connected to the mounting member, one end of the connecting roller passes through the fixed plate and is fixedly connected to a worm wheel, and the worm wheel is meshingly connected to the worm.

[0020] Through the above further scheme, the addition of the motor enables electric adjustment during the lifting process. The operator can accurately adjust the position of the connecting roller on the lifting rope by controlling the forward and reverse rotation of the motor, thereby improving the lifting accuracy. The worm and worm gear mechanism has a self-locking function. When the motor stops running, the worm gear cannot rotate in the opposite direction, ensuring that the hoisted object remains stable in the air and enhancing the reliability of the system.

[0021] Furthermore, the sling rope is a wide flat rope, and the sling rope is a braided rope.

[0022] Through the above further scheme, the wide flat rope has a larger contact area than the round rope, which can better disperse the weight of the hoisted object, reduce the pressure per unit area, and thus improve the carrying capacity. The wide flat rope with a braided structure is usually woven from multiple strands of fibers, has high tensile strength and durability, and can maintain stable performance under high loads.

[0023] Furthermore, the material of the sling is nylon, steel wire or a combination of nylon and steel wire.

[0024] Through the above further scheme, nylon material is lighter, which reduces the overall weight of the lifting rope and facilitates handling and operation. Nylon has good resistance to chemical corrosion and is suitable for a variety of environments; steel wire rope has extremely high tensile strength and is suitable for heavy-load lifting operations and can withstand large weights. Steel wire rope has strong resistance to cutting, reducing the risk of breakage caused by scratches from sharp objects; the combination rope of nylon and steel wire combines the advantages of both materials, with the lightness and flexibility of nylon and the high strength and wear resistance of steel wire. The combined design of nylon and steel wire makes the lifting rope more durable and reduces wear and damage caused by the limitations of a single material.

[0025] Furthermore, it also includes a hook, which has the same size as the hanging piece structure and is movably connected to the hanging rope.

[0026] Through the above further scheme, lifting is performed on the same lifting rope by means of a hook and a hanging piece at the same time, thereby cooperating with two lifting devices to form a quadrilateral, and the lateral position of the sleeves on the two lifting devices can be controlled by means of the hook and the hanging piece.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The angle between the lifting end of the lifting device and the casing can be adjusted by the adjustable lifting device, so that when the casing is tilted, the lifting end of the lifting device and the lifting rope are located in the same straight line, which can not only prevent the lifting end of the lifting device from being damaged by a large shear force, but also facilitate the adjustment of the tilt angle of the casing;

[0029] 2. It is connected with two adjustable slings through a sling and a sling rope, and can be hoisted by a hoisting vehicle. Since the angle between the slings on the two slings is large, the casing is prevented from rotating in the air;

[0030] 3. The two slings allow the rope to be evenly stressed during the lifting process, thus avoiding rope breakage or damage to the hoisted object caused by excessive force at a single point. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0032] Figure 1 It is a schematic diagram of the overall front view structure of Example 1 of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall three-dimensional structure of Example 1 of the present invention;

[0034] Figure 3 This is a schematic diagram of the connecting rod structure of Example 1 of the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of the restraining member of Example 1 of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the hanging member of Example 1 of the present invention;

[0037] Figure 6 It is a schematic diagram of the overall structure of Example 2 of the present invention.

[0038] In the figure: 1. sling; 11. connecting rod; 111. limiting platform; 112. first sharp tooth; 113. handle; 2. lifting rope; 3. hanging piece; 31. hook; 32. connecting roller; 321. second sharp tooth; 322. worm gear; 33. fixing plate; 331. limiting arc plate; 332. motor; 3321. worm; 333. mounting piece; 4. sleeve; 5. restraining piece; 51. beam frame; 511. through groove; 512. mounting groove; 513. slot; 52. clamping plate; 521. fixing needle; 6. lifting hook. DETAILED DESCRIPTION

[0039] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 indirectly connected through an intermediate medium, or it can be the internal connection 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. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Embodiment 1:

[0043] Reference Figure 1-Figure 3 As shown, an adjustable angle casing lifting tool includes two adjustable lifting devices 1, a lifting rope 2 and a lifting piece 3. The two lifting devices 1 are respectively fixedly mounted on the two ends of the casing 4. A connecting rod 11 is rotatably connected to the lifting end of the lifting device 1. Two limit platforms 111 are arranged on the connecting rod 11. A first sharp tooth 112 is arranged on the connecting rod 11 at the middle of the two limit platforms 111. One end of the connecting rod 11 passes through the lifting end of the lifting device 1 and a handle 113 is arranged on one side.

[0044] The two hoisting devices 1 enable the hoisting rope 2 to be subjected to uniform force during the hoisting process, thereby avoiding the breakage of the hoisting rope 2 or damage to the hoisted object caused by excessive force at a single point.

[0045] The limiting platform 111 is used to limit the position of the suspension rope 2 , and the first sharp teeth 112 can be inserted into the suspension rope 2 to fix the suspension rope 2 in place to prevent the suspension rope 2 from sliding freely on the connecting rod 11 .

[0046] The connecting rod 11 can be rotated through the handle 113 , and the rotation of the connecting rod 11 can drive the sling rope 2 to rotate together through the first sharp teeth 112 , thereby adjusting the length of the sling rope 2 between the slings 1 .

[0047] It should be noted that the adjustable hanger 1 is an adjustable angle lifting fixture in the background technology. The lifting ends of the hanger 1 are a fixed hanger and an adjustable hanger on two clamps. One end of the connecting rod 11 is rotatably connected to the fixed hanger, and the other end is rotatably connected to the adjustable hanger.

[0048] Reference Figure 2 and Figure 4As shown, both ends of the lifting rope 2 are respectively connected to the connecting rods 11 on the two lifting devices 1, and the lifting rope 2 is fixed by the bundle frame 51. A through slot 511 is provided in the middle of the bundle frame 51. One end of the lifting rope 2 passes through the through slot 511 from one end of the bundle frame 51, wraps around the connecting rod 11, and passes through the through slot 511 from the other end of the bundle frame 51 to the outside. The bundle frame 51 is provided with a mounting groove 512 on one side of the end of the lifting rope 2. The mounting groove 512 is provided with a slot 513, and the slot 513 is connected to the through slot 511. A clamping plate 52 is rotatably connected to the mounting groove 512, and a plurality of fixing pins 5 are provided on the side of the clamping plate 52 facing the slot 513. 21, and its position corresponds to the position of the slot 513. The multiple fixing pins 521 on the card plate 52 can be directly inserted into the end of the lifting rope 2 through the slot 513, thereby fixing the end of the lifting rope 2 to prevent the lifting rope 2 from loosening or sliding during the lifting process, which greatly enhances the safety of the lifting. The lifting rope 2 can be easily inserted into the bundle frame 51 through the through slot 511 and quickly fixed by the fixing pins 521 on the card plate 52. The whole process is simple and fast, and no complicated tools or steps are required. If the length of the lifting rope 2 needs to be readjusted, only the card plate 52 needs to be opened and fixed again after adjustment, which is very convenient.

[0049] Among them, through the adjustable sling 1, the angle between the lifting end of the sling 1 and the sleeve 4 can be adjusted, so that when the sleeve 4 is tilted, the lifting end of the sling 1 and the lifting rope 2 are located in the same straight line, which can not only prevent the lifting end of the sling 1 from being damaged by a large shear force, but also facilitate the adjustment of the tilt angle of the sleeve 4.

[0050] To further illustrate, when the connecting rod 11 does not rotate, the first sharp teeth 112 can position and fix the suspension rope 2, and the fixing pins 521 on the clamping plate 52 can further position and fix the suspension rope 2, thereby preventing the suspension rope 2 from loosening or sliding.

[0051] As a further development of this embodiment, a plurality of tie frames 51 may be provided, and the fixing of the suspension rope 2 may be strengthened by the clamping plates 52 on the plurality of tie frames 51 , so as to further ensure the stability of the suspension rope 2 .

[0052] Among them, the lifting rope 2 is a wide flat rope, and the lifting rope 2 is a braided rope. Compared with the round rope, the wide flat rope has a larger contact area, which can better disperse the weight of the hoisted object and reduce the pressure per unit area, thereby improving the carrying capacity. The wide flat rope with a braided structure is usually woven from multiple strands of fibers, has high tensile strength and durability, and can maintain stable performance under high loads.

[0053] Among them, the material of the lifting rope 2 is nylon, steel wire or a combination of nylon and steel wire, preferably a combination of nylon and steel wire. Nylon reduces the overall weight of the lifting rope 2 and is easy to carry and operate. Nylon has good resistance to chemical corrosion and is suitable for a variety of environments; the steel wire lifting rope 2 has extremely high tensile strength and is suitable for heavy-load lifting operations and can withstand a large weight. The steel wire lifting rope 2 has strong cutting resistance and reduces the risk of breakage caused by scratches from sharp objects; the combination lifting rope 2 of nylon and steel wire combines the advantages of both materials and has the lightness and flexibility of nylon and the high strength and wear resistance of steel wire. The combined design of nylon and steel wire makes the lifting rope 2 have better durability and reduces wear and damage caused by the limitations of a single material.

[0054] Reference Figure 2 and Figure 5 As shown, the hanging piece 3 is movably connected to the hanging rope 2, and the hanging piece 3 includes a hook 31 and a connecting roller 32. The hook 31 is fixedly connected to the connecting roller 32 through a fixing plate 33, and the connecting roller 32 is rotatably connected to the fixing plate 33. One end of the hanging rope 2 passes through the middle of the hook 31 and the connecting roller 32 and is connected to the connecting rod 11. The connecting roller 32 is movably connected to the hanging rope 2, and the connecting roller 32 can rotate freely on the fixing plate 33, so that the hanging rope 2 can freely adjust the angle with the movement of the connecting roller 32 during the hanging process, thereby improving the flexibility of the hanging.

[0055] Among them, the lifting piece 3 and the lifting rope 2 are connected with two adjustable lifting devices 1, and can be lifted by a lifting vehicle. Moreover, since the angle between the lifting ropes 2 on the two lifting devices 1 is relatively large, the sleeve 4 is prevented from rotating in the air.

[0056] Among them, a second sharp tooth 321 is provided in the middle of the connecting roller 32. The second sharp tooth 321 can increase the friction between the lifting rope 2 and the connecting roller 32 to prevent the lifting rope 2 from sliding due to external factors (such as wind force, vibration, etc.) during the lifting process, thereby ensuring the stability and reliability of the lifting rope 2. The design of the sharp teeth can fix the lifting rope 2 at multiple points, so that the lifting rope 2 can remain stable even when the force is uneven, thereby reducing the safety hazard caused by the sliding of the lifting rope 2.

[0057] Among them, a limiting arc plate 331 is provided on one side of the fixed plate 33 and above the connecting roller 32. The limiting arc plate 331 serves as a physical barrier, which can effectively prevent the lifting rope 2 from falling off from the second sharp tooth 321 on the connecting roller 32 due to accidental impact or violent shaking during the lifting process, thereby increasing the safety of the lifting. The limiting arc plate 331 works together with the connecting roller 32 and the second sharp tooth 321 to form a multiple protection mechanism, further improving the safety of the lifting system.

[0058] Among them, a motor 332 is fixedly installed on the side of the fixed plate 33 away from the hook 31, and a worm 3321 is fixedly installed on the output shaft of the motor 332. The worm 3321 is fixedly installed on the fixed plate 33 through the mounting piece 333, and the worm 3321 is rotatably connected to the mounting piece 333. One end of the connecting roller 32 passes through the fixed plate 33 and is fixedly connected with a worm wheel 322. The worm wheel 322 is meshingly connected with the worm 3321. The addition of the motor 332 makes it possible to realize electric adjustment during the lifting process. The operator can accurately adjust the position of the connecting roller 32 on the lifting rope 2 by controlling the forward and reverse rotation of the motor 332, thereby improving the lifting accuracy. The worm 3321 and worm wheel 322 mechanism have a self-locking function. When the motor 332 stops running, the worm wheel 322 cannot rotate in the opposite direction, thereby ensuring that the hoisted object remains stable in the air and enhancing the reliability of the system.

[0059] The working principle of this embodiment is:

[0060] By adjusting the angle at which the sleeve 4 needs to be tilted, the angle between the lifting end of the sling 1 and the sleeve 4 can be adjusted in advance, and the position of the hanging piece 3 on the hanging rope 2 can be adjusted. The sleeve 4 can be directly lifted at a predetermined tilt angle through the hanging piece 3, which saves time and effort, and does not need to be adjusted in the air, greatly increasing the safety of the lifting process;

[0061] When it is necessary to adjust in the air, it is only necessary to start the motor 332. The motor 332 drives the worm wheel 322 to rotate through the worm 3321, and the worm wheel 322 drives the connecting roller 32 to rotate, thereby adjusting the position of the hanger 3 on the suspension rope 2, and adjusting the length of the suspension rope 2 on both sides of the hanger 3, thereby changing the inclination angle of the sleeve 4.

[0062] Embodiment 2:

[0063] Reference Figure 6 As shown, on the basis of Example 1, it also includes a hook 31. The hook 31 has the same structure and size as the hanger 3. The hook 31 is movably connected to the lifting rope 2. On the same lifting rope 2, lifting is performed by the hook 31 and the hanger 3 at the same time, and then cooperates with the two hangers 1 to form a quadrilateral. The lateral position of the sleeve 4 on the two hangers 1 can be controlled by the hook 31 and the hanger 3.

[0064] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An adjustable angle casing lifting tool, comprising two adjustable angle lifting devices (1), a lifting rope (2) and a hanging piece (3), characterized in that: The two slings (1) are respectively fixedly mounted on the two ends of the sleeve (4); the lifting ends of the two slings (1) are respectively movably connected to the two ends of the sling rope (2); both ends of the sling rope (2) and the connecting ends of the slings (1) are provided with binding members (5) for fixing the sling rope (2); and the sling (3) is movably connected to the sling rope (2).

2. The adjustable angle casing lifting tool according to claim 1, characterized in that: A connecting rod (11) is rotatably connected to the lifting end of the lifting device (1), and two limit platforms (111) are provided on the connecting rod (11) for limiting the position of the lifting rope (2). A first sharp tooth (112) is provided on the connecting rod (11) in the middle of the limit platform (111), and a handle (113) is provided on one end of the connecting rod (11) passing through the lifting end of the lifting device (1).

3. The adjustable angle casing lifting tool according to claim 2, characterized in that: The binding member (5) comprises a binding frame (51) and a clamping plate (52); a through slot (511) for the suspension rope (2) to pass through is provided in the middle of the binding frame (51); one end of the suspension rope (2) passes through the through slot (511) from one end of the binding frame (51), is wound around a connecting rod (11), and passes through the through slot (511) from the other end of the binding frame (51) to the outside; a mounting slot (512) is provided on one side of the end of the suspension rope (2); a slot (513) is provided on the mounting slot (512); the slot (513) is communicated with the through slot (511); a clamping plate (52) is rotatably connected to the mounting slot (512); a plurality of fixing pins (521) are provided on the side of the clamping plate (52) facing the slot (513), and the position of the fixing pins (521) corresponds to the position of the slot (513); the fixing pins (521) are used to fix the end of the suspension rope (2).

4. The adjustable angle casing lifting tool according to claim 2, characterized in that: The hanging member (3) comprises a hanging hook (31) and a connecting roller (32); the hanging hook (31) is fixedly connected to the connecting roller (32) via a fixing plate (33); the connecting roller (32) is rotatably connected to the fixing plate (33); one end of the hanging rope (2) passes through the middle of the hanging hook (31) and the connecting roller (32) to be connected to the connecting rod (11); the connecting roller (32) is movably connected to the hanging rope (2).

5. The angle-adjustable casing lifting tool according to claim 4, characterized in that: The middle part of the connecting roller (32) is provided with a second sharp tooth (321).

6. The adjustable angle casing lifting tool according to claim 5, characterized in that: A limiting arc plate (331) is provided on one side of the fixed plate (33) above the connecting roller (32).

7. The adjustable angle casing lifting tool according to claim 6, characterized in that: A motor (332) is fixedly mounted on the side of the fixed plate (33) away from the hook (31); a worm (3321) is fixedly mounted on the output shaft of the motor (332); the worm (3321) is fixedly mounted on the fixed plate (33) via a mounting member (333); the worm (3321) is rotatably connected to the mounting member (333); one end of the connecting roller (32) passes through the fixed plate (33) and is fixedly connected to a worm wheel (322); the worm wheel (322) is meshingly connected to the worm (3321).

8. The angle-adjustable casing lifting tool according to claim 1, characterized in that: The suspension rope (2) is a wide flat rope.

9. The angle-adjustable casing lifting tool according to claim 8, characterized in that: The material of the suspension rope (2) is nylon, steel wire or a combination of nylon and steel wire.

10. The angle-adjustable casing lifting tool according to claim 6, characterized in that: It also comprises a hook (31), the hook (31) having the same structure and size as the hanging piece (3), and the hook (31) being movably connected to the hanging rope (2).

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