A large-tonnage pipe ring hoisting machine

Abstract

The present invention provides a large-tonnage pipe ring lifting machine, which is used for lifting pipe rings with multiple lifting support points on the inner wall, including a frame, a running structure, a lifting trolley, and a sling structure; the frame includes a main beam and a leg for supporting the main beam, and the leg is fixedly connected to the main beam; the running structure is arranged at the bottom end of the leg; the lifting trolley is arranged on the main beam; the sling structure is detachably connected to the lifting trolley; wherein the sling structure includes a support structure with adjustable length; the sling structure is suitable for lifting the pipe ring through the support structure and the lifting support points. In the present invention, the sling structure lifts the pipe ring through the support structure and the lifting support points of the pipe ring, and under the action of the running structure, it can drive the pipe ring to be transported to a designated position; thereby, the pipe ring is lifted into place, avoiding the problem of damage and deformation of the pipe ring caused by the use of wire ropes.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, and in particular to a large-tonnage pipe ring hoisting machine. Background Art

[0002] At present, with the vigorous promotion of prefabricated buildings in my country, a large number of large-tonnage pipe ring components, such as pipe ring molds, will be used in engineering construction. However, in actual construction, there is no special lifting equipment for large-tonnage pipe ring components. Most of them are temporarily lifted by multiple crawler cranes and truck cranes. The lifting process uses steel wire ropes to bind large-tonnage pipe ring components, which can easily cause damage and deformation of large-tonnage pipe ring components. Summary of the invention

[0003] The problem solved by the invention is how to design a lifting device for lifting a pipe ring.

[0004] In order to solve the above problems, the present invention provides a large-tonnage pipe ring hoisting machine for lifting a pipe ring with a plurality of hoisting support points arranged on the inner wall, comprising:

[0005] A frame, the frame comprising a main beam and legs for supporting the main beam, the legs being fixedly connected to the main beam;

[0006] A running structure, the running structure being arranged at the bottom end of the supporting leg;

[0007] A lifting trolley, wherein the lifting trolley is arranged on the main beam;

[0008] A sling structure, the sling structure being detachably connected to the lifting trolley;

[0009] Wherein, the sling structure comprises a support structure with adjustable length; the sling structure is suitable for lifting the pipe ring through the support structure and the lifting support point.

[0010] Optionally, the sling structure also includes a frame body; the support structure includes a power device and a support member for supporting the lifting support point, the power device is fixedly connected to the frame body, and the telescopic end of the power device is fixedly connected to the support member.

[0011] Optionally, the frame body is provided with a mounting slot structure, and the power device is fixedly arranged in the mounting slot structure; one end of the support member extends out of the mounting slot structure, and the other end of the support member is located in the mounting slot structure and connected to the telescopic end of the power device 421.

[0012] Optionally, the frame body is in a tic-tac-toe shape, and the eight ends of the frame body are all provided with the installation groove structure.

[0013] Optionally, a guiding structure is further included, wherein the guiding structure is fixedly connected to an end of the supporting member away from the power device, and the guiding structure is suitable for guiding the pipe ring to fall into position.

[0014] Optionally, the guide structure includes a first plate structure, which is inclined downward and exceeds the outer edge of the lower end of the pipe ring so that the pipe ring can be accurately positioned; and / or, the guide structure includes a second plate structure, which is suitable for fitting with the inner wall of the pipe ring so that the support member can be stably located below the lifting support point.

[0015] Optionally, the lifting trolley includes a frame and a first power assembly; the frame is arranged on the main beam, and both ends of the frame in the length direction exceed the outer edge of the main beam, and the first power assembly is respectively arranged at both ends of the frame in the length direction; the first power assembly is fixedly connected to the sling structure through a connecting member.

[0016] Optionally, it further includes a telescopic second power assembly, wherein a fixed end of the second power assembly is arranged on the main beam, and a telescopic end of the second power assembly is connected to the frame.

[0017] Optionally, the second power assembly is provided on both sides of the frame in the width direction of the frame.

[0018] Optionally, the telescopic end of the second power assembly is movably connected to the frame; when the second power assemblies on both sides of the frame are telescoped in the same direction, the second power assembly is suitable for driving the frame to move linearly; when the second power assemblies on both sides of the frame are telescoped in different directions, the second power assembly is suitable for driving the frame to rotate horizontally.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the arrangement of the main beam and the legs can provide a hoisting space; the hoisting structure lifts the pipe ring through the supporting structure and the hoisting support point of the pipe ring, and under the action of the running structure, the pipe ring can be driven and transported to a designated position; thereby, the pipe ring is hoisted into place, avoiding the problem of damage and deformation of the pipe ring caused by the use of wire ropes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an implementation mode of the pipe ring hoisting machine in the present invention;

[0021] Figure 2 It is a structural schematic diagram of the pipe ring hoisting machine of the present invention from another perspective;

[0022] Figure 3 A schematic structural diagram of an implementation mode of the traveling structure in the present invention;

[0023] Figure 4 It is a structural schematic diagram of an implementation mode of the lifting trolley in the present invention;

[0024] Figure 5 It is a structural schematic diagram of an implementation mode of the sling structure in the present invention;

[0025] Figure 6 It is a schematic diagram of the assembly of the support structure and the mounting groove structure in the present invention;

[0026] Figure 7 It is a structural schematic diagram of the guide structure in the present invention;

[0027] Figure 8 It is a partial enlarged view of the lifting device structure for lifting the pipe ring in the present invention.

[0028] Description of reference numerals:

[0029] 1-frame, 2-travel structure, 3-lifting trolley, 4-hanging device structure, 5-pulley structure, 6-guide structure, 7-pipe ring;

[0030] 11-main beam, 12-support leg, 21-balance beam, 22-connecting seat, 23-trolley, 24-reducer, 31-frame, 32-first power assembly, 33-second power assembly, 34-connector, 35-fixed seat, 41-frame body, 42-support structure, 61-first plate structure, 62-second plate structure, 71-lifting support point;

[0031] 411 - mounting slot structure, 421 - power device, 422 - support member. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] In the description of the present invention, it should be understood that the positive direction of "X" in the drawings represents the right, and correspondingly, the reverse direction of "X" represents the left; the positive direction of "Y" represents the front, and correspondingly, the reverse direction of "Y" represents the back; the positive direction of "Z" represents the top, and correspondingly, the reverse direction of "Z" represents the bottom. The orientation or position relationship indicated by the terms "X", "Y", "Z", etc. is based on the orientation or position relationship shown in the drawings of the specification, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The pipe ring 7 is simply a ring-shaped heavy object, usually of large tonnage. However, due to the lack of special lifting equipment, the lifting process uses wire ropes to tie it up, which can easily cause damage and deformation of the pipe ring 7. Therefore, there is an urgent need for a new special pipe ring lifting equipment that can solve the current problems.

[0035] like Figure 1 , 2 As shown, an embodiment of the present invention provides a large-tonnage pipe ring lifting machine, which is used for lifting a pipe ring 7 with a plurality of lifting support points 71 on the inner wall, and includes a frame 1, a running structure 2, a lifting trolley 3, and a sling structure 4; the frame 1 includes a main beam 11 and a support leg 12 for supporting the main beam 11, and the support leg 12 is fixedly connected to the main beam 11; the running structure 2 is arranged at the bottom end of the support leg 12; the lifting trolley 3 is arranged on the main beam 11; the sling structure 4 is detachably connected to the lifting trolley 3; wherein the sling structure 4 includes a support structure 42 with adjustable length; the sling structure 4 is suitable for lifting the pipe ring 7 through the support structure 42 and the lifting support points 71.

[0036] After adopting the large-tonnage pipe ring lifting machine of this embodiment, the arrangement of the main beam 11 and the support legs 12 can provide lifting space; the lifting device structure 4 lifts the pipe ring 7 through the supporting structure 42 and the lifting support point 71 of the pipe ring 7, and under the action of the running structure 2, it can drive the pipe ring 7 to be transported to the designated position; thereby, the pipe ring 7 is lifted into place, avoiding the problem of damage and deformation of the pipe ring 7 caused by the use of wire rope.

[0037] In this embodiment, the lifting support point 71 is pre-set in the inner wall of the pipe ring 7, generally located in the lower half of the inner part of the pipe ring 7. Therefore, during lifting, the lifting device structure 4 will not directly contact the pipe ring 7, avoiding the problem of damage and deformation of the pipe ring 7 caused by the use of wire ropes. Specifically, the inner wall of the pipe ring 7 is welded with multiple protrusions as the lifting support points 71, and the multiple protrusions can be located on the same plane or on different planes, depending on actual needs.

[0038] In this embodiment, the main beam 11 and the legs 12 are both box-type structures, and the legs 12 are connected to the main beam 11 by bolts. Specifically, two main beams 11 are provided and arranged in parallel, that is, the frame 1 adopts a door frame structure of double main beams 11, which is assembled from three sections, so that it is easy to disassemble and transport, and adjacent sections are connected by connecting plates and bolts. A leg 12 is provided at both ends of each main beam 11, and the two legs 12 at the same end of the two main beams 11 are fixedly connected by a connecting rod, thereby forming a double leg 12 structure, which increases the stability of the overall operation during travel.

[0039] Alternatively, if Figure 5As shown, the sling structure 4 also includes a frame body 41; the support structure 42 includes a power device 421 and a support member 422 for supporting the lifting support point 71, the power device 421 is fixedly connected to the frame body 41, and the telescopic end of the power device 421 is fixedly connected to the support member 422. Therefore, under the action of the power device 421, it can drive the support member 422 to extend or shorten, which can not only realize the cooperation between the support member 422 and the lifting support point 71 to complete the lifting of the pipe ring 7; but also can adapt to pipe rings 7 of different diameters, and has stronger versatility.

[0040] In this embodiment, the power device 421 is a telescopic oil cylinder or a telescopic air cylinder, which can be selected according to actual needs. Figure 6 As shown, for stability considerations, the power device 421 is preferably a telescopic cylinder. The support member 422 is in the shape of an elongated strip, and is preferably made of a material with a strong bearing capacity, such as an alloy.

[0041] Specifically, Figure 6 As shown, the frame body 41 is provided with a mounting slot structure 411, and the power device 421 is fixedly arranged in the mounting slot structure 411; one end of the support member 422 extends out of the mounting slot structure 411, and the other end of the support member 422 is located in the mounting slot structure 411 and connected to the telescopic end of the power device 421. Therefore, the installation of the mounting slot structure 411 can hide the power device 421, which not only plays a protective role, but also during hoisting, since a part of the support member 422 is located in the mounting slot structure 411, the frame body 41 can also bear part of the gravity, avoiding the support member 422 from bearing the gravity directly, thereby reducing the probability of the support member 422 breaking.

[0042] In this embodiment, the cross-sectional shapes of the inlet of the mounting groove structure 411 and the support member 422 match each other, so as to facilitate the stable operation of the support member 422 in the mounting groove structure 411. In one embodiment, the cross-sectional shapes of the inlet of the mounting groove structure 411 and the support member 422 are both circular or square, etc., which can be selected according to actual needs. Figure 6 As shown, the inlet of the mounting slot structure 411 and the cross-section of the support member 422 are both square, thereby preventing the support member 422 from rotating relative to the mounting slot structure 411, and providing greater stability.

[0043] Optionally, the frame body 41 is in a well-shaped configuration, and the eight ends of the frame body 41 are all provided with the mounting groove structure 411. Thus, the frame body 41 has a well-shaped structure with eight ends, and the inner wall of the pipe ring 7 is provided with eight matching lifting support points 71; after the support member 422 and the lifting support points 71 are assembled in place, the pipe ring 7 can be lifted at one time.

[0044] In this embodiment, the frame body 41 is a box beam, and the cross-shaped structure refers to: Figure 5 As shown, the four rods adopt a frame structure formed by staggering two horizontal and two vertical rods. The depth direction of the installation slot structure 411 is along the length direction of the rod.

[0045] Alternatively, if Figure 7 As shown, it also includes a guide structure 6, which is fixedly connected to one end of the support member 422 away from the power device 421, and is suitable for guiding the pipe ring 7 to fall into position. Therefore, when the pipe ring 7 is lowered, it can fall into position accurately, avoiding the deviation of the central axis of the upper and lower adjacent pipe rings 7.

[0046] Specifically, Figure 7 , 8 As shown, the guide structure 6 includes a first plate structure 61, which is inclined downward and exceeds the outer edge of the lower end of the pipe ring 7, so that the pipe ring 7 can be accurately positioned; and / or, the guide structure 6 includes a second plate structure 62, which is suitable for fitting with the inner wall of the pipe ring 7, so that the support member 422 can be stably located below the lifting support point 71. Therefore, since the first plate structure 61 is inclined downward and extends out of the inner wall of the pipe ring 7, when the pipe ring 7 is lowered, if the central axes of the upper and lower pipe rings 7 coincide, the first plate structure 61 will not work; if the central axes of the upper and lower pipe rings 7 do not coincide, that is, there is a deviation, part of the first plate structure 61 will first contact the inner wall of the pipe ring 7 that has been placed in place. Since it is inclined, under the action of the gravity of the sling structure 4, the position of the lowered pipe ring 7 will be automatically adjusted, and finally the central axes of the two pipe rings 7 will coincide, thereby achieving the precise placement of the pipe ring 7, that is, guiding the pipe ring 7 to fall into place, and avoiding the deviation of the central axes of the upper and lower adjacent pipe rings 7. At the same time, since the inner wall of the pipe ring 7 is an arc surface, when the second plate structure 62 is also an arc surface, they fit each other. When the support member 422 is located below the lifting support point 71, the second plate structure 62 is close to the inner wall of the pipe ring 7, which plays a role in stabilizing the pipe ring 7 and preventing the pipe ring 7 from shaking relative to the lifting structure.

[0047] like Figure 2 , 7 As shown, the guide structure 6 includes a first plate structure 61 and a second plate structure 62. The first plate structure 61 is fixedly arranged at the end of the support member 422 extending out of the mounting groove structure 411, and the second plate structure 62 is fixedly connected below the first plate structure 61 and is inclined toward the center axis direction of the pipe ring 7.

[0048] Alternatively, if Figure 3As shown, the lifting trolley 3 includes a frame 31 and a first power assembly 32; the frame 31 is arranged on the main beam 11, and both ends of the frame 31 in the length direction exceed the outer edge of the main beam 11, and the first power assembly 32 is respectively arranged at both ends of the frame 31 in the length direction; the first power assembly 32 is fixedly connected to the sling structure 4 through a connecting member 34. Therefore, under the action of the first power assembly 32, the sling structure 4 can be raised and lowered through the connecting member 34, so as to promote the lifting of the pipe ring 7.

[0049] In this embodiment, the length direction refers to: Figure 4 As shown, the direction of the Y axis.

[0050] In this embodiment, since the main beam 11 is provided with two beams, Figure 3 As shown, the frame 31 is designed as a long plate and is placed across two main beams 11. Two track grooves are provided below the frame 31, and each main beam 11 is provided with a guide rail that cooperates with the track groove, thereby facilitating the stable operation of the frame 31 on the main beam 11 to avoid shaking.

[0051] In this embodiment, the first power assembly 32 is a winch, and the connecting member 34 is a wire rope; thus, the hoisting device 4 can be lifted or lowered by pulling and releasing the wire rope by the winch. At the same time, the frame 31 and the frame body 41 of the hoisting device 4 are both provided with a pulley structure 5, and the wire rope is wound around the pulley structures 5 of the two and wound on the winch, thereby stabilizing the lifting device 4. Figure 4 As shown, the pulley structure 5 of the frame 31 is arranged at both ends of the frame 31 in the length direction; the pulley structure 5 on the frame body 41 is arranged on the upper end surface of the frame body 41.

[0052] like Figure 1 As shown, two lifting trolleys 3 are provided, and the two are arranged in parallel on the main beam 11 , thereby lifting the sling structure 4 is achieved through four first power components 32 .

[0053] Specifically, Figure 4 As shown, it also includes a retractable second power assembly 33, the fixed end of which is arranged on the main beam 11, and the retractable end of which is connected to the frame 31. Thus, under the action of the second power assembly 33, the position of the frame 31 can be changed, prompting the sling structure 4 to adjust.

[0054] In this embodiment, the second power assembly 33 is a telescopic oil cylinder or a telescopic air cylinder, depending on actual needs. For stability considerations, the second power assembly 33 is preferably a telescopic oil cylinder.

[0055] Optionally, in the width direction of the frame 31, the second power assembly 33 is disposed on both sides of the frame 31. Thus, the frame 31 can be stably operated by the second power assembly 33 on both sides.

[0056] In this embodiment, the width direction refers to: Figure 4 As shown, the direction of the X-axis.

[0057] Specifically, the telescopic end of the second power assembly 33 is movably connected to the frame 31; when the second power assemblies 33 on both sides of the frame 31 are telescopic in the same direction, the second power assembly 33 is suitable for driving the frame 31 to move linearly; when the second power assemblies 33 on both sides of the frame 31 are telescopic in different directions, the second power assembly 33 is suitable for driving the frame 31 to rotate horizontally. In this way, not only the hoisting cost is reduced, but also the hoisting speed is greatly improved and the hoisting risk factor is reduced.

[0058] like Figure 4 As shown, a second power assembly 33 is provided on each side of the frame 31. Therefore, when the two second power assemblies 33 are extended and retracted in the same direction, the forces exerted on the frame 31 by the two are simultaneously along the positive or reverse direction of the X-axis, which will drive the sling structure 4 to perform linear motion in the X-axis direction; when the two second power assemblies 33 are extended and retracted in different directions, the force exerted on the frame 31 by one second power assembly 33 is directed toward the positive direction of the X-axis, and the force exerted on the frame 31 by the other second power assembly 33 is directed toward the reverse direction of the X-axis. Since the second power assembly 33 and the frame 31 are connected by a pin shaft The frame 31 is connected and can rotate horizontally relative to the two second power assemblies 33, thereby realizing the horizontal rotation of the sling structure 4, facilitating the fine adjustment of the position of the sling structure 4, and promoting the precise placement of the pipe ring 7. It not only solves the problem that when the existing pipe ring 7 is hoisted, the crane boom will be too eccentric due to the heavy weight and volume of the pipe ring 7 and the change in the center of gravity, but also solves the problem that the hoisting of multiple cranes is not synchronized, the load distribution of multiple cranes with different lifting capacities is uneven, causing the hoisting system to become unstable, and the problems of high cost, high risk factor, low hoisting accuracy and slow hoisting speed of multiple cranes are solved.

[0059] In this embodiment, a mounting seat is provided at the fixed end of the second power assembly 33, and the second power assembly 33 can rotate horizontally relative to the mounting seat; at the same time, the fixing seat 35 is fixedly connected to the main beam 11. Therefore, when the two second power assemblies 33 drive the frame 31 to rotate horizontally, since the mounting seat and the second power assembly 33 can also rotate, the rotation range of the frame 31 is larger, which is more conducive to adjusting the position of the sling structure 4.

[0060] Alternatively, if Figure 3As shown, the running structure 2 includes a balance beam 21, a connecting seat 22, a reducer 24 and a trolley 23. The connecting seat 22 is fixedly arranged on the balance beam 21 and is detachably connected to the lower end of the support leg 12; the trolley 23 is provided with two and symmetrically fixed at the lower end of the balance beam 21, each trolley 23 includes two wheels and is driven by a three-in-one reduction motor; thus, the running structure 2 can realize the overall movement of the whole machine, and can adopt a wheel-rail structure, that is, a guide rail for the wheel to run is pre-laid, so that the whole machine can run back and forth on a specified route.

[0061] The large-tonnage pipe ring hoisting machine of this embodiment comprises the following steps when in operation:

[0062] (1) The whole machine moves to the assembly position of the pipe ring 7, and the sling structure 4 is lowered to the assembly platform.

[0063] It should be noted that before the sling structure 4 is lowered, it is necessary to check whether the wire rope has been de-grooved and whether the various operating mechanisms of the winch are operating normally.

[0064] (2) The eight support members 422 are extended to the designated position (slightly smaller than the inner diameter of the pipe ring 7), and the pipe ring 7 is spliced ​​based on the end faces of the eight lifting support points 71.

[0065] It should be noted that during the assembly process, attention should be paid to whether the lifting support point 71 of the pipe ring 7 is located above the support member 422 .

[0066] (3) After the assembly of the pipe ring 7 is completed, the lifting trolley 3 works to lift the pipe ring 7 to a specified height.

[0067] It should be noted that before the lifting trolley 3 is lifted, it should be ensured that the support member 422 supports the lifting support point 71 and the lifting support point 71 does not become misplaced or detached.

[0068] (4) The running structure 2 moves, and the whole machine moves to the specified position.

[0069] It should be noted that before the running structure 2 moves, there should be no other obstacles on the laid guide rails, and attention should be paid to the running conditions of the wheels during operation to prevent the wheels from "riding on the rails".

[0070] (5) The sling structure 4 is lowered. During the lowering process, the position of the pipe ring 7 can be fine-tuned by the telescopic cylinder on the lifting trolley 3 and the running structure 2. When the position of the pipe ring 7 is basically consistent with the position of the pipe ring 7 below, the sling structure 4 is lowered. Under the action of the first plate structure 61 of the sling structure 4, the pipe ring 7 is slid to the specified position by the dead weight of the sling structure 4.

[0071] It should be noted that during the lowering process of the sling structure 4, attention should be paid to whether there are interfering parts around, the entire lowering process should be smooth and orderly, and observers should be arranged around to pay attention to the connection of the hook and prevent risks caused by the shaking of the sling structure 4.

[0072] (6) After the pipe ring 7 is lowered, the support member 422 retracts to a specified position, so that the sling structure 4 is disengaged from the pipe ring 7, and the sling structure 4 is lifted to a specified height.

[0073] (7) The running structure 2 is operated to return the whole machine to the installation position of the pipe ring 7, and then the above steps (1) to (6) are repeated until the final lifting is completed.

[0074] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A large-tonnage pipe ring lifting machine, used for lifting a pipe ring (7) having a plurality of lifting support points (71) arranged on the inner wall, characterized in that: include: A frame (1), the frame (1) comprising a main beam (11) and a support leg (12) for supporting the main beam (11), the support leg (12) being fixedly connected to the main beam (11); A running structure (2), the running structure (2) being arranged at the bottom end of the supporting leg (12); A lifting trolley (3), the lifting trolley (3) being arranged on the main beam (11); wherein the lifting trolley (3) comprises a frame (31), and the frame (31) is arranged on the main beam (11); A second power assembly (33) capable of extension and retraction, wherein a fixed end of the second power assembly (33) is arranged on the main beam (11), and a retractable end of the second power assembly (33) is connected to the vehicle frame (31); in the width direction of the vehicle frame (31), the second power assembly (33) is arranged on both sides of the vehicle frame (31); the retractable end of the second power assembly (33) is movably connected to the vehicle frame (31); when the second power assemblies (33) on both sides of the vehicle frame (31) extend and retract in the same direction, the second power assembly (33) is suitable for driving the vehicle frame (31) to move linearly; when the second power assemblies (33) on both sides of the vehicle frame (31) extend and retract in different directions, the second power assembly is suitable for driving the vehicle frame (31) to rotate horizontally; A sling structure (4), the sling structure (4) being detachably connected to the lifting trolley (3); The sling structure (4) comprises a support structure (42) with adjustable length; the sling structure (4) is suitable for lifting the pipe ring (7) through the support structure (42) and the lifting support point (71); the sling structure (4) also comprises a frame body (41); the support structure (42) comprises a power device (421) and a support member (422) for supporting the lifting support point (71), the power device (421) is fixedly connected to the frame body (41), and the telescopic end of the power device (421) is fixedly connected to the support member (422).

2. The large-tonnage pipe ring hoisting machine according to claim 1 is characterized in that: The frame body (41) is provided with a mounting slot structure (411), and the power device (421) is fixedly arranged in the mounting slot structure (411); one end of the support member (422) extends out of the mounting slot structure (411), and the other end of the support member (422) is located in the mounting slot structure (411) and connected to the telescopic end of the power device (421).

3. The large-tonnage pipe ring hoisting machine according to claim 2 is characterized in that: The frame body (41) is in a well shape, and the eight ends of the frame body (41) are all provided with the installation groove structure (411).

4. The large-tonnage pipe ring hoisting machine according to claim 1, characterized in that: It also comprises a guide structure (6), wherein the guide structure (6) is fixedly connected to one end of the support member (422) away from the power device (421), and the guide structure (6) is suitable for guiding the pipe ring (7) to fall into place.

5. The large-tonnage pipe ring hoisting machine according to claim 4, characterized in that: The guide structure (6) comprises a first plate structure (61), the first plate structure (61) is inclined downward, and the first plate structure (61) exceeds the outer edge of the lower end of the tube ring (7), so that the tube ring (7) is accurately positioned.

6. The large-tonnage pipe ring hoisting machine according to claim 5, characterized in that: The guide structure (6) further comprises a second plate structure (62), wherein the second plate structure (62) is adapted to fit with the inner wall of the pipe ring (7) so that the support member (422) is stably located below the lifting support point (71).

7. The large-tonnage pipe ring hoisting machine according to claim 1, characterized in that: The lifting trolley (3) further comprises a first power assembly (32); both ends of the frame (31) in the length direction extend beyond the outer edge of the main beam (11), and the first power assembly (32) is respectively arranged at both ends of the frame (31) in the length direction; the first power assembly (32) is fixedly connected to the sling structure (4) via a connecting member (34).

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