CN111470431A - A large tonnage pipe ring hoisting machine - Google Patents

Abstract

The invention provides a large-tonnage pipe ring hoist, which is used for hoisting a pipe ring with a plurality of hoisting support points arranged on the inner wall, including a frame, a running structure, a hoisting trolley and a spreader structure; the frame includes a main beams and outriggers for supporting the main beam, the outriggers are fixedly connected with the main beam; the running structure is arranged at the bottom end of the outriggers; the lifting trolley is arranged on the main beam The spreader structure is detachably connected to the hoisting trolley; wherein, the spreader structure includes a length-adjustable support structure; the spreader structure is adapted to pass through the support structure and the hoisting support point Lift the pipe ring. In the present invention, the hanger structure lifts the pipe ring through the hoisting support point between the support structure and the pipe ring, and under the action of the running structure, can drive the pipe ring to be transported to the designated position; The wire rope causes the problem of damage and deformation of the pipe ring.

Description

A large tonnage pipe ring hoisting machine

technical field

The invention relates to the technical field of hoisting equipment, in particular to a large-tonnage pipe ring hoisting machine.

Background technique

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, are used in engineering construction. However, in actual construction, large-tonnage pipe ring components do not have special hoisting equipment for hoisting. Most of them are Multiple crawler cranes and truck cranes are used for temporary hoisting together. During the hoisting process, the large-tonnage pipe ring members are easily damaged and deformed by using steel wire ropes to bind the large-tonnage pipe ring members.

SUMMARY OF THE INVENTION

The problem solved by the present invention is how to design a hoisting device for hoisting the pipe ring.

In order to solve the above problems, the present invention provides a large-tonnage pipe ring hoist, which is used for lifting a pipe ring with a plurality of hoisting support points on the inner wall, including:

a frame, the frame includes a main beam and outriggers for supporting the main beam, the outriggers are fixedly connected to the main beam;

a running structure, the running structure is arranged at the bottom end of the outrigger;

a lifting trolley, the lifting trolley is arranged on the main beam;

a spreader structure, the spreader structure is detachably connected with the lifting trolley;

Wherein, the spreader structure includes a length-adjustable support structure; the spreader structure is suitable for lifting the pipe ring through the support structure and the hoisting support point.

Optionally, the spreader structure further includes a frame body; the support structure includes a power device and a support for supporting the hoisting support point, the power device is fixedly connected to the frame body, and the power The telescopic end of the device is fixedly connected to the support.

Optionally, the frame body is provided with an installation groove structure, and the power device is fixedly arranged in the installation groove structure; one end of the support member protrudes from the installation groove structure, and the other end of the support member is located in the installation groove structure. The installation groove structure is connected to the telescopic end of the power device 421 .

Optionally, the rack body is in a well-shaped shape, and the eight ends of the rack body are provided with the mounting groove structure.

Optionally, a guide structure is further included, the guide structure is fixedly connected to the end of the support member away from the power device, and the guide structure is suitable for guiding the pipe ring to fall.

Optionally, the guide structure includes a first plate structure, the first plate structure is inclined downward, and the first plate structure extends beyond the outer edge of the lower end of the pipe ring, so that the pipe ring can be positioned accurately and/or, the guide structure includes a second plate structure, and the second plate structure is adapted to fit with the inner wall of the pipe ring, so that the support member is stably positioned below the hoisting support point.

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 extend beyond the outer edge of the main beam, And the first power components are respectively provided at both ends of the frame in the length direction; the first power components are fixedly connected with the hanger structure through a connecting piece.

Optionally, it also includes a telescopic second power assembly, the fixed end of the second power assembly is disposed on the main beam, and the telescopic end of the second power assembly is connected to the vehicle frame.

Optionally, in the width direction of the frame, both sides of the frame are provided with the second power components.

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 move and retract in the same direction, the second power assembly is suitable for driving The frame moves linearly; when the second power assemblies on both sides of the frame expand and contract in opposite directions, the second power assemblies are adapted to drive the frame to rotate horizontally.

Compared with the prior art, the beneficial effects of the present invention are as follows: the arrangement of the main beam and the outriggers can provide a hoisting space; , which can drive the pipe ring to be transported to the designated position; thus, the pipe ring can be hoisted in place, and the problem of damage and deformation of the pipe ring caused by the use of steel wire ropes can be avoided.

Description of drawings

1 is a schematic structural diagram of an embodiment of a pipe ring hoisting machine in the present invention;

Fig. 2 is the structural schematic diagram of another angle of view of the pipe ring hoisting machine in the present invention;

3 is a schematic structural diagram of an embodiment of the running structure in the present invention;

4 is a schematic structural diagram of an embodiment of the hoisting trolley in the present invention;

5 is a schematic structural diagram of an embodiment of the spreader structure in the present invention;

Fig. 6 is the assembly schematic diagram of the support structure and the installation groove structure in the present invention;

7 is a schematic structural diagram of the guide structure in the present invention;

FIG. 8 is a partial enlarged view of the hoisting pipe ring of the hanger structure in the present invention.

Description of reference numbers:

1-frame, 2-travel structure, 3-lifting trolley, 4-spreader structure, 5-pulley structure, 6-guide structure, 7-pipe ring;

11-main beam, 12-outrigger, 21-balance beam, 22-connector, 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 board structure, 62-second board structure, 71-hoisting support point;

411-installation slot structure, 421-power unit, 422-support.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, it should be understood that the forward direction of "X" in the accompanying drawings represents the right side, and correspondingly, the reverse direction of "X" represents the left side; the forward direction of "Y" represents the front side, and accordingly, The reverse of "Y" represents the rear; the forward direction of "Z" represents the upper side, correspondingly, the reverse side of "Z" represents the lower side, and the orientation or positional relationship indicated by the terms "X", "Y", "Z", etc. is Based on the orientation or positional relationship shown in the drawings in the description, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot It is construed as a limitation of the present invention. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The pipe ring 7 is simply a ring-shaped heavy object, which is usually of large tonnage. However, since it does not have special hoisting equipment, the hoisting process is bundled with steel wire ropes, which is easy to cause damage and deformation of the pipe ring 7. Therefore, an urgent need for a The new special pipe ring hoisting equipment can solve the current problems.

As shown in FIGS. 1 and 2 , an embodiment of the present invention provides a large-tonnage pipe ring hoist, which is used for hoisting a pipe ring 7 with a plurality of hoisting support points 71 on its inner wall, including a frame 1, a running structure 2, a lifting Heavy trolley 3, spreader structure 4; the frame 1 includes a main beam 11 and outriggers 12 for supporting the main beam 11, the outriggers 12 are fixedly connected to the main beam 11; the running structure 2 is arranged at the bottom end of the outrigger 12; the lifting trolley 3 is arranged on the main beam 11; the spreader structure 4 is detachably connected to the lifting trolley 3; wherein, the spreader The structure 4 includes a length-adjustable support structure 42 ; the spreader structure 4 is adapted to lift the pipe ring 7 through the support structure 42 and the hoisting support points 71 .

After using the large-tonnage pipe ring hoisting machine of this embodiment, the setting of the main beam 11 and the outriggers 12 can provide a hoisting space; Under the action of the running structure 2, the pipe ring 7 can be driven to be transported to a designated position; thus, the pipe ring 7 can be hoisted in place, and the problem of damage and deformation of the pipe ring 7 caused by the wire rope is avoided.

In this embodiment, the hoisting support point 71 is preset in the inner wall of the pipe ring 7 , and is generally located in the lower half of the interior of the pipe ring 7 . Therefore, during hoisting, the hanger structure 4 will not be in direct contact with the pipe ring 7, which avoids the damage and deformation of the pipe ring 7 caused by the use of steel wire ropes. At point 71, multiple bumps may be located on the same plane or on different planes, depending on actual requirements.

In this embodiment, the main beam 11 and the outriggers 12 are both box-shaped structures, and the outriggers 12 and the main beam 11 are connected by bolts. Specifically, two main beams 11 are provided and arranged in parallel, that is, the frame 1 adopts the door frame structure of double main beams 11, and is composed of three segments assembled, so as to facilitate disassembly and transportation, and adjacent segments are connected by connecting Plates and bolts are connected. Both ends of each main beam 11 are provided with a supporting leg 12, and the two supporting legs 12 at the same end of the two main beams 11 are fixedly connected by connecting rods, so as to form a structural form of double supporting legs 12, which increases the overall smoothness of operation.

Optionally, as shown in FIG. 5 , the spreader structure 4 further includes a frame body 41 ; the support structure 42 includes a power device 421 and a support 422 for supporting the hoisting 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 hoisting support point 71, and complete the lifting of the pipe ring 7; Pipe ring 7, more versatility.

In this embodiment, the power device 421 is a telescopic oil cylinder or a telescopic cylinder, which is selected according to actual needs. As shown in FIG. 6 , for the sake of stability, the power device 421 is preferably a telescopic oil cylinder. The support member 422 is in the shape of a long strip, and is preferably made of a material with strong bearing capacity, such as alloy.

Specifically, as shown in FIG. 6 , the frame body 41 is provided with an installation groove structure 411 , and the power device 421 is fixedly arranged in the installation groove structure 411 ; one end of the support member 422 protrudes from the installation groove In the structure 411 , the other end of the support member 422 is located in the installation groove structure 411 and is connected to the telescopic end of the power device 421 . Therefore, the installation of the installation groove 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 installation groove structure 411, the frame body 41 can also bear part of the gravity, avoiding Gravity is directly borne by the support 422, thereby reducing the probability of the support 422 breaking.

In this embodiment, the inlet of the installation groove structure 411 and the cross-sectional shape of the support member 422 match each other, so as to facilitate the stable operation of the support member 422 in the installation groove structure 411. In one embodiment, the inlet of the installation groove structure 411 and the support The cross section of the piece 422 is all other shapes such as a circle or a square, which can be selected according to actual needs. As shown in FIG. 6 , the cross section of the inlet of the installation groove structure 411 and the support member 422 are both square, thus, the relative rotation of the support member 422 relative to the installation groove structure 411 is avoided, and the stability is stronger.

Optionally, the frame body 41 is in a well-shaped shape, and the eight ends of the frame body 41 are provided with the installation groove structures 411 . Therefore, 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 hoisting support points 71; after the support 422 and the hoisting support points 71 are assembled in place, the pipe One-time lifting of ring 7.

In this embodiment, the frame body 41 is a box girder, and the well-shaped shape refers to: as shown in FIG. 5 , the four rods adopt a frame structure formed by two horizontal and two criss-crossing. The depth direction of the installation groove structure 411 is along the length direction of the rod.

Optionally, as shown in FIG. 7 , a guide structure 6 is further included, the guide structure 6 is fixedly connected to the 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 drop. In this way, it is convenient for the pipe ring 7 to be positioned accurately when it is lowered, and the central axis of the upper and lower adjacent pipe rings 7 can be avoided from being offset.

Specifically, as shown in FIGS. 7 and 8 , the guide structure 6 includes a first plate structure 61 , the first plate structure 61 is inclined downward, and the first plate structure 61 extends beyond the lower end of the pipe ring 7 . and/or, the guide structure 6 includes a second plate structure 62, and 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 positioned below the hoisting support point 71 . Therefore, since the first plate structure 61 is inclined downward and protrudes from 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 does not work; if the central axes of the upper and lower pipe rings 7 do not coincide, that is, a deviation occurs, and part of the first plate structure 61 will first contact the inner wall of the pipe ring 7 that has been placed in place. Under the action of the gravity of the structure 4, the position of the pipe ring 7 will be automatically adjusted, and finally the central axes of the two pipe rings 7 will be coincident, so as to realize the precise placement of the pipe ring 7, that is, guide the pipe ring 7 to fall in place to avoid the up and down. The central axis of the adjacent pipe rings 7 is offset. 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 are attached to each other. When the support 422 is located below the hoisting support point 71, the second plate structure 62 is close to the pipe ring. The inner wall of 7 plays the role of stabilizing the pipe ring 7 to prevent the pipe ring 7 from shaking relative to the hoisting structure.

As shown in FIGS. 2 and 7 , 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 end of the support member 422 protruding from the mounting groove structure 411 , and the second plate structure 61 The structure 62 is fixedly connected below the first plate structure 61 and is inclined toward the central axis of the pipe ring 7 .

Optionally, as shown in FIG. 3 , 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 the frame 31 is in the length direction Both ends of the frame 31 extend beyond the outer edge of the main beam 11 , and the first power components 32 are respectively provided at both ends of the frame 31 in the length direction; the first power components 32 are connected to the The spreader structure 4 is fixedly connected. Therefore, under the action of the first power assembly 32 , the lifting and lowering of the spreader structure 4 can be realized through the connecting piece 34 , so as to promote the lifting of the pipe ring 7 .

In this embodiment, the length direction refers to the direction in which the Y axis is located as shown in FIG. 4 .

In this embodiment, since two main beams 11 are provided, as shown in FIG. There are two track grooves below the frame 31 , and each main beam 11 is provided with a guide rail matched with the track grooves, thereby facilitating the stable operation of the frame 31 on the main beam 11 and avoiding shaking.

In this embodiment, the first power component 32 is a hoist, and the connecting member 34 is a wire rope; thus, the hoist can pull and loosen the wire rope, so that the spreader structure 4 can be raised or lowered. At the same time, the frame 31 and the frame body 41 of the spreader structure 4 are provided with pulley structures 5 , and the wire rope is wound around the two pulley structures 5 on the hoist, thereby facilitating the hoisting of the spreader structure 4 . As shown in FIG. 4 , the pulley structures 5 of the frame 31 are arranged at both ends of the frame 31 in the length direction; the pulley structures 5 on the frame body 41 are arranged on the upper end surface of the frame body 41 .

As shown in FIG. 1 , there are two hoisting trolleys 3 , and the two are arranged in parallel on the main beam 11 , so that the hoisting of the spreader structure 4 is realized through the four first power assemblies 32 .

Specifically, as shown in FIG. 4 , it also includes a telescopic second power assembly 33 , the fixed end of the second power assembly 33 is disposed on the main beam 11 , and the telescopic end of the second power assembly 33 is connected to the main beam 11 . The frame 31 is connected. Thus, under the action of the second power assembly 33, the position of the vehicle frame 31 can be changed, and the spreader structure 4 can be adjusted.

In this embodiment, the second power assembly 33 is a telescopic oil cylinder or a telescopic cylinder, which is determined according to actual needs. For the sake of stability, the second power assembly 33 is preferably a telescopic oil cylinder.

Optionally, in the width direction of the frame 31 , the second power assemblies 33 are provided on both sides of the frame 31 . Thus, the stable operation of the vehicle frame 31 can be achieved by the second power assemblies 33 on both sides.

In this embodiment, the width direction refers to the direction in which the X axis is located as shown in FIG. 4 .

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 It is suitable for driving the frame 31 to move linearly; when the second power assemblies 33 on both sides of the frame 31 expand and contract in opposite directions, the second power assemblies 33 are suitable for driving the frame 31 to rotate horizontally. As a result, not only the hoisting cost is reduced, but also the hoisting speed is greatly improved, and the hoisting risk factor is reduced.

As shown in FIG. 4 , a second power assembly 33 is provided on both sides of the frame 31 . Therefore, when the two second power assemblies 33 are extended and retracted in the same direction, the forces acting on the frame 31 are simultaneously Along the forward or reverse direction of the X-axis, it will drive the spreader structure 4 to move linearly in the direction of the X-axis; when the two second power assemblies 33 expand and contract in opposite directions, the The force is directed toward the positive direction of the X-axis, and the force of the other second power assembly 33 on the frame 31 is directed toward the reverse direction of the X-axis. Since the second power assembly 33 and the frame 31 are connected by pins, the frame 31 can be opposite to each other. The two second power assemblies 33 rotate horizontally, thereby realizing the horizontal rotation of the spreader structure 4, which is convenient for fine-tuning the position of the spreader structure 4, and promotes the precise positioning of the pipe ring 7, which not only solves the problem of the existing pipe ring 7 being hoisted due to the The pipe ring 7 is heavy in weight, large in volume, and the position of the center of gravity changes, which will cause the eccentricity of the crane arm to be too large, and the hoisting of multiple cranes is not synchronized. And the problems of high cost of multi-hoist, high risk factor, low hoisting accuracy and slow hoisting speed.

In this embodiment, the fixed end of the second power assembly 33 is provided with a mounting seat, and the second power assembly 33 can rotate horizontally relative to the mounting seat; at the same time, the fixed seat 35 is fixedly connected to the main beam 11, so that the two When the second power assembly 33 drives the frame 31 to rotate horizontally, since the mounting seat and the second power assembly 33 can also rotate, the rotation of the frame 31 is larger, which is more conducive to adjusting the position of the spreader structure 4 .

Optionally, as shown in FIG. 3 , the traveling 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 detachable from the lower end of the outrigger 12 connection; 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 whole machine The overall movement of the machine can be in the form of a wheel-rail structure, that is, pre-laid guide rails for the wheels to run, so that the whole machine can run back and forth on the specified route.

When working, the large-tonnage pipe ring hoisting machine of this embodiment includes the following steps:

(1) The whole machine runs to the assembly position of the pipe ring 7, and the spreader structure 4 is lowered to the assembly platform.

It should be noted that, before the spreader structure 4 is lowered, it is necessary to check whether the wire rope is out of the groove, and whether the various operating mechanisms of the hoist are operating normally.

(2) The eight supports 422 extend to a designated position (slightly smaller than the inner diameter of the pipe ring 7 ), and the pipe ring 7 is spliced with the end faces of the eight hoisting support points 71 as a reference.

It should be noted that during the assembling process, attention should be paid to whether the hoisting support point 71 of the pipe ring 7 is located above the support member 422 .

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

It should be noted that, before the hoisting trolley 3 is lifted, it should be ensured that the support member 422 supports the hoisting support point 71, and the hoisting support point 71 is not displaced or disengaged.

(4) The running structure 2 moves, and the whole machine moves to the designated position.

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

(5) The spreader structure 4 is lowered. During the lowering process, the position of the pipe ring 7 can be fine-tuned through the telescopic oil cylinder on the hoisting trolley 3 and the running structure 2. When the position of the pipe ring 7 and the lower pipe ring 7 are basically the same, The spreader structure 4 is lowered, and under the action of the first plate structure 61 of the spreader structure 4 , the pipe ring 7 is slid down to the designated position by the self-weight of the spreader structure 4 .

It should be noted that during the lowering process of the spreader structure 4, attention should be paid to whether there are interfering parts around, the entire lowering process should be stable and orderly, and observers should be arranged around to pay attention to the connection of the hook and prevent the spreader structure 4 from shaking. risk.

(6) After the lowering of the pipe ring 7 is completed, the support member 422 is retracted to the designated position, so that the spreader structure 4 is disengaged from the pipe ring 7, and the spreader structure 4 is lifted to the designated height.

(7) Run the running structure 2 to make the whole machine return to the installation position of the pipe ring 7, and repeat the above steps (1)-(6) until the final lifting is completed.

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

Claims (10)

1. The utility model provides a large-tonnage pipe ring hoisting machine for pipe ring (7) that jack-up inner wall was provided with a plurality of hoist and mount strong points (71), its characterized in that includes:

the device comprises a rack (1), wherein the rack (1) comprises a main beam (11) and supporting legs (12) for supporting the main beam (11), and the supporting legs (12) are fixedly connected with the main beam (11);

the walking structure (2), the walking structure (2) is arranged at the bottom end of the supporting leg (12);

the trolley (3) is arranged on the main beam (11);

a spreader structure (4), the spreader structure (4) being detachably connected to the trolley (3);

wherein the spreader structure (4) comprises a length adjustable support structure (42); the spreader structure (4) is adapted to hoist the pipe loop (7) through the support structure (42) and the hoisting support points (71).

2. The large tonnage tubular ring sling machine according to claim 1, wherein said sling structure (4) further comprises a frame body (41); the supporting structure (42) comprises a power device (421) and a supporting piece (422) used for supporting the hoisting supporting 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 with the supporting piece (422).

3. The large-tonnage pipe ring hoisting machine according to claim 2, wherein said frame body (41) is provided with an installation groove structure (411), said power device (421) being fixedly disposed in said installation groove structure (411); one end of the supporting piece (422) extends out of the mounting groove structure (411), and the other end of the supporting piece (422) is located in the mounting groove structure (411) and connected with the telescopic end of the power device (421).

4. The large-tonnage pipe ring hoisting machine according to claim 3, wherein said frame body (41) is in the shape of a Chinese character jing, and said mounting groove structure (411) is provided at each of eight ends of said frame body (41).

5. The large-tonnage pipe ring hoisting machine according to claim 2, further comprising a guide structure (6), wherein said guide structure (6) is fixedly connected to an end of said support member (422) remote from said power plant (421), and said guide structure (6) is adapted to guide said pipe ring (7) to fall.

6. The large-tonnage pipe ring hoisting machine of claim 5, wherein said guide structure (6) comprises a first plate structure (61), said first plate structure (61) is inclined downward, and said first plate structure (61) exceeds the outer edge of the lower end of said pipe ring (7) to make the pipe ring (7) accurately fall; and/or the guide structure (6) comprises a second plate structure (62), wherein the second plate structure (62) is suitable for being attached to the inner wall of the pipe ring (7) so that the support piece (422) is stably positioned below the hoisting support point (71).

7. The large-tonnage tubular ring hoist according to claim 1, characterized in that said trolley (3) comprises a frame (31) and a first power assembly (32); the frame (31) is arranged on the main beam (11), two ends of the frame (31) in the length direction exceed the outer edge of the main beam (11), and the two ends of the frame (31) in the length direction are respectively provided with the first power components (32); the first power assembly (32) is fixedly connected with the hanger structure (4) through a connecting piece (34).

8. The large-tonnage pipe ring hoisting machine according to claim 7, further comprising a second power assembly (33) capable of telescoping, wherein the fixed end of the second power assembly (33) is arranged on the main beam (11), and the telescoping end of the second power assembly (33) is connected with the frame (31).

9. The large-tonnage pipe ring hoisting machine according to claim 8, wherein the second power assembly (33) is arranged on both sides of the frame (31) in the width direction of the frame (31).

10. The large-tonnage tubular ring hoisting machine of claim 9, wherein the telescopic end of said second power assembly (33) is movably connected to said frame (31); when the second power assemblies (33) on the two sides of the frame (31) extend and retract in the same direction, the second power assemblies (33) are suitable for driving the frame (31) to move linearly; when the second power assemblies (33) on the two sides of the frame (31) extend in different directions, the second power assemblies are suitable for driving the frame (31) to horizontally rotate.

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