Auxiliary device for hoisting tubular structural member, hoisting method and mounting method

Abstract

The invention provides an auxiliary device for hoisting a tubular structural member, a hoisting method and a mounting method. The auxiliary device comprises a first hoisting ring, a hoisting rope winding barrel and a second hoisting ring which can be connected to the periphery of a to-be-hoisted pipe in a sleeving mode, and the first hoisting ring, the hoisting rope winding barrel and the second hoisting ring are connected to form an integral structure capable of rotating around the to-be-hoisted pipe. During hoisting operation, the integral structure is fixed to the surface of a to-be-hoisted pipe through the lifting lugs, one end of a lifting rope is fixedly connected with the first hoisting ring, the integral structure is rotated to enable the lifting rope to wind around the periphery of the lifting rope winding barrel, and the other end of the lifting rope is tensioned and stressed to be connected with a crane. And then the integral structure is fixed on the surface of the pipe to be hoisted through the lifting lugs, so that the lifting rope has the advantages that the length of the lifting rope can be freely adjusted, and the synchronous stress of each lifting point can be ensured in a multi-point hoisting effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and in particular relates to an auxiliary device, a hoisting method and an installation method for hoisting tubular structural members. Background Art

[0002] To meet the needs of structural space and exterior design, various types of long-span tubular trusses and inclined beams, columns, and supporting components are widely used in steel structures. During the hoisting and construction of steel structures, multi-point hoisting is often employed to prevent deformation of large-span structures. Furthermore, to accommodate the hoisting of components at varying angles, various lifting ropes of varying lengths are required. In actual construction, the binding of the lifting ropes to the components can lead to uneven force distribution at each lifting point and significant deviations in the component's tilt angle.

[0003] In current on-site construction, work teams usually temporarily purchase fixed-length lifting ropes or use hand winches as tools to adjust the length of the lifting ropes. However, safety regulations stipulate that hand winches have the risk of failure, so they cannot be directly used as part of the lifting rope's force-bearing system for direct lifting. An additional lifting rope of similar length must be additionally configured as a safety guarantee. This method also requires ropes of various lengths, making construction operations cumbersome and posing safety hazards.

[0004] In addition, when using multi-point lifting, ensuring that the lifting ropes are subjected to force synchronously at each lifting point is an important guarantee for improving the safety of the lifting operation, increasing the service life of the lifting ropes, preventing deformation of components during the lifting process, and ensuring the stability of the lifting. Summary of the Invention

[0005] In response to the above-mentioned technical status quo, the present invention provides an auxiliary device for lifting tubular structural members. When using the auxiliary device to lift tubular structural members, the length of the lifting rope can be freely adjusted, thereby eliminating the need to configure lifting ropes of various fixed lengths, and can ensure that each lifting point is subjected to force synchronously during multi-point lifting.

[0006] The technical solution provided by the present invention is: an auxiliary device for lifting a tubular structure, the tubular structure to be lifted is referred to as a pipe to be lifted, the auxiliary device includes a first lifting ring, a lifting rope drum, a second lifting ring, and a lifting lug;

[0007] The first lifting ring, the lifting rope drum and the second lifting ring are all annular structures that can be sleeved on the outer periphery of the pipe to be lifted; the outer diameter of the first lifting ring is larger than the outer diameter of the lifting rope drum, and the outer diameter of the second lifting ring is larger than the outer diameter of the lifting rope drum;

[0008] Along the length direction of the pipe to be hoisted, the first hoisting ring, the hoisting rope drum and the second hoisting ring can be sequentially sleeved on the outer periphery of the pipe to be hoisted, and one end of the hoisting rope drum is fixedly connected to the first hoisting ring, and the other end is fixedly connected to the second hoisting ring to form an integral structure that can rotate around the pipe to be hoisted, that is, the first hoisting ring, the hoisting rope drum and the second hoisting ring form an integral structure that can rotate around the pipe to be hoisted;

[0009] During the hoisting operation, the overall structure is fixed to the surface of the pipe to be hoisted through the hoisting lugs, the hoisting rope is wound around the outer periphery of the hoisting rope drum, one end of the hoisting rope is fixedly connected to the first hoisting ring, and the other end is connected to the crane.

[0010] The method for hoisting a pipe to be hoisted using the auxiliary device of the present invention comprises the following steps:

[0011] First, the overall structure is sleeved on the periphery of the pipe to be hoisted; then, one end of the lifting rope is fixedly connected to the first lifting ring, and the overall structure is rotated to make the lifting rope wrap around the periphery of the lifting rope winding drum, so that the other end of the lifting rope is tightened and connected to the crane with force, and then the overall structure is fixed to the surface of the pipe to be hoisted through the lifting ear.

[0012] As an implementation method, the first lifting ring is composed of two parts spliced ​​together. The first part is a part of a circular ring, including a first inner arc and a first outer arc. The curvature of the first inner arc is greater than 180° and less than 360°, and the curvature of the first outer arc is greater than 180° and less than 360°. The second part is also a part of the circular ring, including a second inner arc and a second outer arc. The curvature of the second inner arc is greater than 180° and less than 360°, and the curvature of the second outer arc is greater than 180° and less than 360°. The first part of the first lifting ring and the second part of the first lifting ring are coaxially spliced ​​together to have an overlapping portion, and the overlapping portion is fixed to form the first lifting ring. As an implementation method, the overlapping portion is provided with a bolt hole, and the overlapping portion is fixed by a bolt member.

[0013] As an implementation method, the hoisting rope drum is composed of a first part and a second part spliced ​​along a direction perpendicular to the length of the pipe to be hoisted, and the second hoisting ring is composed of a first part and a second part spliced ​​along a direction perpendicular to the length of the pipe to be hoisted. In this structure, as a preference, the installation method of the auxiliary device includes the following steps:

[0014] (1) One end of the first part of the rope drum is fixedly connected to the first part of the first lifting ring, and the other end of the first part of the rope drum is fixedly connected to the first part of the second lifting ring, thereby obtaining the first part of the overall structure;

[0015] One end of the second part of the rope drum is fixedly connected to the second part of the first lifting ring, and the other end of the second part of the rope drum is fixedly connected to the second part of the second lifting ring, thereby forming the second part of the overall structure;

[0016] (2) Along the length direction perpendicular to the pipe to be hoisted, the first part of the overall structure obtained in step (1) and the second part of the overall structure are arranged on the periphery of the pipe to be hoisted and spliced ​​together, so that the first part of the lifting rope drum and the second part of the lifting rope drum form a lifting rope drum, and at the same time, the first part and the second part of the first lifting ring are coaxially spliced ​​to form a first lifting ring (at this time, along the length direction of the pipe to be hoisted, the length of the first part of the lifting rope drum is less than the length of the second part of the lifting rope drum, so that the first part of the first lifting ring overlaps with the second part), and at the same time, the first part and the second part of the second lifting ring are coaxially spliced ​​to form a second lifting ring, that is, the first lifting ring, the lifting rope drum, and the second lifting ring constitute the overall structure sleeved on the periphery of the pipe to be hoisted; then fix the overlapping part of the first part and the second part of the first lifting ring.

[0017] Preferably, a lifting hole is provided on the first lifting ring for fixing one end of the lifting rope and for fixing the lifting ear and the overall structure when the overall structure is rotated to adjust the lifting rope to an optimal length.

[0018] As an implementation method, during the lifting operation, the lifting lug is fixed to the surface of the pipe to be lifted, and the lifting lug is fixedly connected to the first lifting ring, thereby fixing the entire structure to the surface of the pipe to be lifted. To improve the fixing effect, as an implementation method, a stabilizing member fixedly connected to the pipe to be lifted is preferably provided to improve the connection stability of the lifting lug. As an implementation method, the stabilizing member is a stiffening plate.

[0019] As an implementation method, the auxiliary device also includes a first shackle and a second shackle, the first shackle is fixedly connected to the first lifting ring, the second shackle is fixedly connected to the first lifting ring, one end of the lifting rope is fixedly connected to the first lifting ring through the first shackle, and the other end of the lifting rope passes through the second shackle to connect to the crane.

[0020] In the present invention, the method of fixing the connection is not limited, but is preferably fixed by welding.

[0021] In the present invention, the material of the hoisting rope is not limited. In order to improve the hoisting reliability, a high-strength hoisting wire rope is preferably used.

[0022] Compared with the prior art, the present invention has the following advantages or positive effects:

[0023] (1) In the present invention, the two ends of the rope drum are fixedly connected to the first lifting ring and the second lifting ring respectively to form an integral structure. The integral structure can rotate around the pipe to be hoisted. One end of the rope is fixedly connected to the first lifting ring. By rotating the integral structure, the rope is wound around the outer periphery of the rope drum, so that the other end of the rope is tightened and connected to the crane, and then the integral structure is fixed to the surface of the pipe to be hoisted. Therefore, the length of the rope is not limited. The rope length can be adjusted by rotating the integral structure to tighten the rope and connect it to the crane. This eliminates the need to configure ropes of various fixed lengths for the hoisting operation. In addition, when setting multiple lifting points for multi-point lifting operations, it can be ensured that each lifting point is subjected to force synchronously.

[0024] (2) In the present invention, the outer diameters of the first hoisting ring and the second hoisting ring are both larger than the outer diameter of the hoisting rope drum, so that the hoisting rope can be ensured to be wound around the outer periphery of the hoisting rope drum when it is wound around.

[0025] (3) In the present invention, preferably, the first lifting ring is composed of a first part and a second part spliced ​​together, the lifting rope drum is composed of a first part and a second part spliced ​​together, and the second lifting ring is composed of a first part and a second part spliced ​​together. Through the preferred installation method, the auxiliary device can be conveniently and efficiently installed on the periphery of the pipe to be lifted.

[0026] (4) When the auxiliary device of the present invention is used to lift the pipe to be lifted, it can ensure that the stress conditions of each lifting rope and component during the lifting process are closer to the theoretical calculation, prevent the components from being deformed during the lifting process, reduce the need for using various types of lifting ropes of different lengths, and increase the service life of the lifting ropes. At the same time, it can also improve the safety of lifting and make the lifting operation faster and more convenient.

[0027] (5) The auxiliary device of the present invention is suitable for the hoisting operation of tubular structural members, and is particularly suitable for tubular structural members that are hoisted at multiple points and various types of tubular structural members that need to be installed obliquely. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the pipe to be hoisted and the auxiliary device in an embodiment of the present invention.

[0029] Figure 2 It is a schematic diagram of the composition structure of the first lifting ring in an embodiment of the present invention.

[0030] Figure 3 yes Figure 2 Schematic diagram of the structure in which the first part and the second part of the first lifting ring are spliced ​​together to form the first lifting ring.

[0031] Figure 4 It is a structural schematic diagram of the first part of the first lifting ring, the first part of the lifting rope drum and the first part of the second lifting ring in an embodiment of the present invention, which are fixedly connected.

[0032] Figure 5 It is a structural schematic diagram of the second part of the first lifting ring, the second part of the lifting rope drum and the second part of the second lifting ring in an embodiment of the present invention, which are fixedly connected.

[0033] Figure 6 yes Figure 4 and Figure 5 Schematic diagram of the structural parts after being spliced ​​around the pipe to be hoisted.

[0034] Figure 7 yes Figure 4 and Figure 5 The overall structure is obtained by splicing the structural parts around the pipe to be hoisted.

[0035] Figure 8 Schematic diagram of the connection between the sling and the auxiliary device in some embodiments of the present invention.

[0036] Figure 9 1 is a schematic structural diagram of multi-point lifting of a pipe to be lifted in some embodiments of the present invention.

[0037] Figure 1-9 The numbers in are marked as:

[0038] Pipe to be hoisted 1, auxiliary device 2, lifting rope 3, hoist 4, first lifting ring 21, lifting rope drum 22, second lifting ring 23, lifting lug 24, stabilizing member 25, first shackle 26, second shackle 27;

[0039] A first portion 211 of the first lifting ring and a second portion 212 of the first lifting ring;

[0040] The inner arc 2111 of the first part of the first lifting ring, the outer arc 2112 of the first part of the first lifting ring, the first through-hole 2113, the second through-hole 2123, the first through-hole 2114, and the second through-hole 2124;

[0041] an inner arc 2121 of the second portion of the first lifting ring and an outer arc 2122 of the second portion of the first lifting ring;

[0042] A first portion 221 of the rope drum and a second portion 222 of the rope drum;

[0043] The first portion 231 of the second lifting ring and the second portion 232 of the second lifting ring. DETAILED DESCRIPTION

[0044] The present invention is further described in detail below with reference to the embodiments. It should be pointed out that the embodiments described below are intended to facilitate understanding of the present invention, and non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above-mentioned contents of the present invention still fall within the scope of protection of the present invention.

[0045] The words “include”, “including” and the like used in the present invention should be interpreted as including rather than exclusive or exhaustive, that is, as “including but not limited to”.

[0046] The expressions "first", "second", etc. used in the present invention can modify various constituent elements regardless of the order and / or importance, and are only used to distinguish one constituent element from another constituent element, but not to limit the corresponding constituent elements.

[0047] like Figure 1 As shown, the auxiliary device 2 for lifting the pipe 1 to be lifted includes a first lifting ring 21 , a lifting rope drum 22 , a second lifting ring 23 , and a lifting lug 24 .

[0048] The first hoisting ring 21, the rope drum 22, and the second hoisting ring 23 are all ring-shaped structures that can be sleeved on the outer periphery of the pipe to be hoisted 1. In addition, the outer diameter of the first hoisting ring 21 is larger than the outer diameter of the rope drum 22, and the outer diameter of the second hoisting ring 23 is larger than the outer diameter of the rope drum 22.

[0049] Along the length direction of the pipe 1 to be lifted, the first lifting ring 21, the lifting rope drum 22 and the second lifting ring 23 can be sequentially sleeved on the periphery of the pipe 1 to be lifted, and one end of the lifting rope drum 22 is fixedly connected to the first lifting ring 21, and the other end of the lifting rope drum 22 is fixedly connected to the second lifting ring 23, forming an integral structure that can rotate around the pipe 1 to be lifted, that is, the first lifting ring 21, the lifting rope drum 22 and the second lifting ring 23 form an integral structure that can rotate around the pipe 1 to be lifted.

[0050] During the lifting operation, the overall structure is fixed to the surface of the pipe 1 to be lifted by the lifting ear 24, the lifting rope 3 is wrapped around the outer periphery of the lifting rope drum 22, one end of the lifting rope 3 is fixedly connected to the first lifting ring 21, and the other end of the lifting rope 3 is connected to the crane 4.

[0051] When using this auxiliary device to lift the pipe 1 to be lifted, first put the overall structure on the periphery of the pipe 1 to be lifted, then fix one end of the lifting rope 3 to the first lifting ring 21, rotate the overall structure to make the lifting rope 3 wrap around the periphery of the lifting rope winding drum 22, tighten the other end of the lifting rope 3 and connect it to the crane 4 under force, and then fix the overall structure to the surface of the pipe 1 to be lifted through the lifting ear 24. Finally, the crane 4 works and lifts the pipe 1 to be lifted through the lifting rope 3.

[0052] In the present invention, the overall structure can rotate around the pipe 1 to be hoisted. In some embodiments, the inner diameter of the first hoisting ring 21 is equal to or slightly larger than the outer diameter of the pipe 1 to be hoisted, the inner diameter of the second hoisting ring 23 is equal to or slightly larger than the outer diameter of the pipe 1 to be hoisted, and the inner diameter of the hoisting rope drum 22 is equal to or slightly larger than the outer diameter of the pipe 1 to be hoisted.

[0053] In some embodiments, such as Figure 2 、 3 As shown, the first lifting ring 21 is composed of two parts. The first part 211 is a portion of a circular ring, including a first inner arc 2111 and a first outer arc 2112. The curvature of the first inner arc 2111 is greater than 180° and less than 360°, and the curvature of the first outer arc 2112 is greater than 180° and less than 360°. The second part 212 is also a portion of the circular ring, including a second inner arc 2121 and a second outer arc 2122. The curvature of the second inner arc 2121 is greater than 180° and less than 360°, and the curvature of the second outer arc 2122 is greater than 180° and less than 360°. The first part 211 and the second part 212 are coaxially spliced ​​together with an overlapping portion, and the overlapping portion is fixed to form the first lifting ring 21.

[0054] In some embodiments, a first through-hole 2113 is provided at the overlapping portion of the first part 211, and a second through-hole 2123 is provided at the overlapping portion of the second part. When the first part 211 and the second part 212 are coaxially spliced ​​together, the positions of the first through-hole 2113 and the second through-hole 2123 correspond, and bolts can pass through the first through-hole 2113 and the second through-hole 2123 to fix the overlapping portion.

[0055] In this embodiment, the first part 211 is further provided with a first through hole 2114, and the second part is further provided with a second through hole 2124, which are used to fix one end of the sling 3 and to fix the ear 24 and the overall structure when the overall structure is rotated to adjust the sling 3 to an optimal length.

[0056] In some embodiments, such as Figure 4 、 5 As shown, the hoisting rope winding tube 22 is composed of a first part 221 and a second part 222 spliced ​​along the length direction perpendicular to the pipe 1 to be hoisted, and the second hoisting ring 23 is composed of a first part 231 and a second part 232 spliced ​​along the length direction perpendicular to the pipe 1 to be hoisted. In this structure, as a preferred method, the auxiliary device is installed as follows:

[0057] (1) Figure 4 As shown, one end of the first part 221 of the lifting rope drum is fixedly connected to the first part 211 of the first lifting ring, and the other end is fixedly connected to the first part 231 of the second lifting ring, thereby obtaining the first part of the overall structure;

[0058] like Figure 5 As shown, one end of the second portion 222 of the lifting rope drum is fixedly connected to the second portion 212 of the first lifting ring, and the other end is fixedly connected to the second portion 232 of the second lifting ring, thereby obtaining the second portion of the overall structure;

[0059] (2) Figure 6 、7 As shown, along the length direction perpendicular to the pipe 1 to be hoisted, the first part of the overall structure obtained in step (1) and the first part of the overall structure are arranged on the periphery of the pipe 1 to be hoisted and spliced ​​together, so that the first part 221 of the lifting rope drum and the second part 222 of the lifting rope drum form a lifting rope drum 22 that is sleeved on the periphery of the pipe 1 to be hoisted, and at the same time, the first part 211 and the second part 212 of the first lifting ring are coaxially spliced ​​to form a first lifting ring 21 that is sleeved on the periphery of the pipe 1 to be hoisted (at this time, as shown in FIG. Figure 4 、 5 As shown, along the length direction of the pipe 1 to be lifted, the length of the first part 221 of the lifting rope drum is less than the length of the second part 222 of the lifting rope drum, so that the first part 211 of the first lifting ring overlaps with the second part 212), and at the same time, the first part 231 and the second part 232 of the second lifting ring are coaxially spliced ​​to form a second lifting ring 23 that is sleeved on the periphery of the pipe 1 to be lifted, that is, the first lifting ring 21, the lifting rope drum 22, and the second lifting ring 23 constitute an integral structure that is sleeved on the periphery of the pipe 1 to be lifted; then the overlapping part of the first part 211 and the second part 212 of the first lifting ring is fixed by bolts.

[0060] In some embodiments, the lifting lug 24 is fixed to the surface of the pipe 1 to be hoisted, and the lifting lug 24 is fixedly connected to the first hoisting ring 21, thereby fixing the entire structure to the surface of the pipe 1 to be hoisted. In some embodiments, in order to improve the fixing effect, a stabilizing member 25 fixedly connected to the pipe 1 to be hoisted is further provided to improve the connection stability of the lifting lug 24. The stabilizing member 25 can be a stiffening plate.

[0061] In some embodiments, such as Figure 8 As shown, the auxiliary device also includes a first shackle 26 and a second shackle 27. The first shackle 26 is fixedly connected to the first lifting ring 21, and the second shackle 27 is fixedly connected to the first lifting ring 21. One end of the lifting rope 3 is fixedly connected to the first lifting ring 21 through the first shackle 26, and the other end of the lifting rope 3 passes through the second shackle 27 to connect to the crane 4.

[0062] The method of fixed connection is not limited. In some embodiments, the connection between the lifting ear 24 and the pipe to be lifted 1, the connection between the lifting ear and the first lifting ring 21, the connection between the lifting rope drum 22 and the first lifting ring 21, the connection between the lifting rope drum 22 and the second lifting ring 23, the connection between the first shackle 26 and the first lifting ring 21, and the connection between the second shackle 27 and the first lifting ring 21 can all be fixed by welding.

[0063] In some embodiments, such as Figure 9As shown, the pipe 1 to be hoisted is hoisted at multiple points. At this time, multiple auxiliary devices 2 are set along the length direction of the pipe 1 to be hoisted. These auxiliary devices 2 can realize free adjustment of the length of each hoisting rope 3, so that the other end of each hoisting rope 3 is tightened and connected to the crane 4, so that each hoisting point can be subjected to force synchronously, preventing the component from being deformed during the hoisting process, reducing the need for using various hoisting ropes of different lengths, and increasing the service life of the hoisting ropes. At the same time, it can also improve the safety of hoisting, making the hoisting operation faster and more convenient, and is especially suitable for various obliquely installed tubular structural members.

[0064] The above embodiments provide a detailed description of the technical solutions of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, supplements or similar substitutions made within the scope of the principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary device for hoisting tubular structural members, wherein the tubular structural member to be hoisted is referred to as the hoisted pipe, and is characterized by: The auxiliary device includes a first lifting ring, a lifting rope drum, a second lifting ring, and a lifting lug; The first lifting ring, the lifting rope drum and the second lifting ring are all annular structures that can be sleeved on the outer periphery of the pipe to be lifted; the outer diameter of the first lifting ring is larger than the outer diameter of the lifting rope drum, and the outer diameter of the second lifting ring is larger than the outer diameter of the lifting rope drum; Along the length direction of the pipe to be hoisted, the first hoisting ring, the hoisting rope drum and the second hoisting ring can be sequentially sleeved on the outer periphery of the pipe to be hoisted, and one end of the hoisting rope drum is fixedly connected to the first hoisting ring, and the other end is fixedly connected to the second hoisting ring, forming an integral structure that can rotate around the pipe to be hoisted; During the hoisting operation, the overall structure is fixed to the surface of the pipe to be hoisted through the hoisting lugs, the hoisting rope is wound around the outer periphery of the hoisting rope drum, one end of the hoisting rope is fixedly connected to the first hoisting ring, and the other end is connected to the crane.

2. The auxiliary device according to claim 1, characterized in that: The first lifting ring is composed of two parts coaxially spliced ​​together, the first part is a part of the circular ring, including a first inner arc and a first outer arc, the curvature of the first inner arc is greater than 180° and less than 360°, and the curvature of the first outer arc is greater than 180° and less than 360°, the second part is also a part of the circular ring, including a second inner arc and a second outer arc, the curvature of the second inner arc is greater than 180° and less than 360°, and the curvature of the second outer arc is greater than 180° and less than 360°.

3. The auxiliary device according to claim 2, characterized in that: The hoisting rope drum is composed of a first part and a second part spliced ​​along a length direction perpendicular to the pipe to be hoisted, and the second hoisting ring is composed of a first part and a second part spliced ​​along a length direction perpendicular to the pipe to be hoisted.

4. The auxiliary device according to claim 1, characterized in that: The first lifting ring is provided with a lifting hole.

5. The auxiliary device according to claim 1, characterized in that: The lifting lug is fixed on the surface of the pipe to be hoisted, and the lifting lug is fixedly connected to the first hoisting ring.

6. The assisting device according to claim 1, wherein: The pipe to be hoisted is fixedly connected to the stabilizing member, and the stabilizing member is fixedly connected to the lifting ear.

7. The assisting device according to claim 1, wherein: It also includes a first shackle and a second shackle, the first shackle is fixedly connected to the first lifting ring, the second shackle is fixedly connected to the first lifting ring, one end of the lifting rope is fixedly connected to the first lifting ring through the first shackle, and the other end of the lifting rope passes through the second shackle to connect the crane.

8. A method for hoisting a pipe to be hoisted using the auxiliary device according to any one of claims 1 to 7, characterized in that: The steps include: First, the overall structure is sleeved on the periphery of the pipe to be hoisted; then, one end of the lifting rope is fixedly connected to the first lifting ring, and the overall structure is rotated to make the lifting rope wrap around the periphery of the lifting rope winding drum, so that the other end of the lifting rope is tightened and connected to the crane with force, and then the overall structure is fixed to the surface of the pipe to be hoisted through the lifting ear.

9. The method for installing an auxiliary device according to claim 3, wherein: The steps include: (1) One end of the first part of the rope drum is fixedly connected to the first part of the first lifting ring, and the other end of the first part of the rope drum is fixedly connected to the first part of the second lifting ring, thereby obtaining the first part of the overall structure; One end of the second part of the rope drum is fixedly connected to the second part of the first lifting ring, and the other end of the second part of the rope drum is fixedly connected to the second part of the second lifting ring, thereby forming the second part of the overall structure; (2) Along the length direction perpendicular to the pipe to be hoisted, the first part of the overall structure obtained in step (1) and the second part of the overall structure are arranged on the periphery of the pipe to be hoisted and spliced ​​together, so that the first part of the lifting rope drum and the second part of the lifting rope drum form a lifting rope drum, and at the same time, the first part and the second part of the first lifting ring are coaxially spliced ​​to form a first lifting ring, and at the same time, the first part and the second part of the second lifting ring are coaxially spliced ​​to form a second lifting ring, that is, the first lifting ring, the lifting rope drum, and the second lifting ring constitute the overall structure that is sleeved on the periphery of the pipe to be hoisted; then, the overlapping part of the first part and the second part of the first lifting ring is fixed.

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