CN111470431A - Large-tonnage pipe ring hoisting machine - Google Patents

Abstract

The invention provides a large-tonnage pipe ring hoisting machine, which is used for hoisting a pipe ring with a plurality of hoisting support points on the inner wall, and comprises a rack, a traveling structure, a hoisting trolley and a hoisting tool structure; the rack comprises a main beam and supporting legs for supporting the main beam, and the supporting legs are fixedly connected with the main beam; the walking structure is arranged at the bottom end of the supporting leg; the hoisting trolley is arranged on the main beam; the lifting appliance structure is detachably connected with the trolley; wherein the spreader structure comprises a length adjustable support structure; the spreader structure is adapted to lift the pipe loop through the support structure and the hoisting support points. According to the pipe ring lifting device, the pipe ring is lifted by the lifting device structure through the supporting structure and the lifting supporting point of the pipe ring, and the pipe ring can be driven to be transported to a specified position under the action of the walking structure; therefore, the pipe ring is hoisted in place, and the problems of damage and deformation of the pipe ring caused by the adoption of the steel wire rope are solved.

Description

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

At present, with the vigorous popularization of assembly type buildings in China, a large number of large-tonnage pipe ring members such as pipe ring molds are used in engineering construction, however, in actual construction, the large-tonnage pipe ring members are not hoisted by special hoisting equipment, mostly, a plurality of crawler cranes and automobile type cranes are adopted for temporary hoisting together, and the large-tonnage pipe ring members are bound by steel wire ropes in the hoisting process, so that the large-tonnage pipe ring members are easily damaged and deformed.

Disclosure of Invention

The invention solves the problem of how to design the hoisting equipment for hoisting the pipe ring.

In order to solve the above problems, the present invention provides a large-tonnage pipe ring hoisting machine for hoisting a pipe ring having a plurality of hoisting support points on its inner wall, comprising:

the device comprises a rack, a supporting frame and a control device, wherein the rack comprises a main beam and supporting legs for supporting the main beam, and the supporting legs are fixedly connected with the main beam;

the walking structure is arranged at the bottom end of the supporting leg;

the trolley is arranged on the main beam;

the lifting appliance structure is detachably connected with the trolley;

wherein the spreader structure comprises a length adjustable support structure; the spreader structure is adapted to lift the pipe loop through the support structure and the hoisting support points.

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

Optionally, the rack body is provided with a mounting groove structure, and the power device is fixedly arranged in the mounting groove structure; one end of the supporting member extends out of the mounting groove structure, and the other end of the supporting member is located in the mounting groove structure and connected to the telescopic end of the power device 421.

Optionally, the frame body is in a shape of a Chinese character jing, and the eight end portions of the frame body are provided with the mounting groove structures.

Optionally, the pipe ring positioning device further comprises a guide structure fixedly connected to one end of the support member far away from the power device, and the guide structure is suitable for guiding the pipe ring to be positioned.

Optionally, the guide structure includes a first plate structure, the first plate structure is inclined downward, and the first plate structure exceeds the outer edge of the lower end of the pipe ring, so that the pipe ring is accurately located; and/or, the guide structure comprises a second plate structure, and the second plate structure is suitable for being attached to the inner wall of the pipe ring, so that the support piece is stably located below the hoisting support point.

Optionally, the trolley comprises a frame and a first power assembly; the frame is arranged on the main beam, two ends of the frame in the length direction exceed the outer edge of the main beam, and the two ends of the frame in the length direction are respectively provided with the first power components; the first power assembly is fixedly connected with the lifting appliance structure through a connecting piece.

Optionally, still include the second power component that can stretch out and draw back, the stiff end setting of second power component is in on the girder, the flexible end of second power component with frame connection.

Optionally, in the width direction of the frame, the second power assemblies are disposed on both sides of the frame.

Optionally, the telescopic end of the second power assembly is movably connected with the frame; when the second power assemblies on the two sides of the frame are in equidirectional movement and stretch, the second power assemblies are suitable for driving the frame to move linearly; when the second power assemblies on the two sides of the frame stretch in different directions, the second power assemblies are suitable for driving the frame to rotate horizontally.

Compared with the prior art, the invention has the beneficial effects that: the arrangement of the main beam and the supporting legs can provide a hoisting space; the lifting appliance structure lifts the pipe ring through the supporting structure and the lifting supporting point of the pipe ring, and the pipe ring can be driven to be transported to a specified position under the action of the walking structure; therefore, the pipe ring is hoisted in place, and the problems of damage and deformation of the pipe ring caused by the adoption of the steel wire rope are solved.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a pipe ring hoisting machine according to the present invention;

FIG. 2 is a schematic structural view of the tubular ring hoisting machine according to another view angle of the present invention;

FIG. 3 is a schematic structural view of one embodiment of the running structure of the present invention;

FIG. 4 is a schematic structural view of one embodiment of the lift truck of the present invention;

FIG. 5 is a schematic structural view of one embodiment of a spreader structure according to the present invention;

FIG. 6 is a schematic view of the assembly of the support structure and mounting groove structure of the present invention;

FIG. 7 is a schematic view of the guide structure of the present invention;

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

Description of reference numerals:

1-a frame, 2-a running structure, 3-a crane trolley, 4-a sling structure, 5-a pulley structure, 6-a guide structure and 7-a pipe ring;

11-main beam, 12-supporting leg, 21-balance beam, 22-connecting seat, 23-trolley, 24-speed reducer, 31-frame, 32-first power component, 33-second power component, 34-connecting piece, 35-fixing seat, 41-frame body, 42-supporting structure, 61-first plate structure, 62-second plate structure and 71-hoisting supporting point;

411-mounting groove structure, 421-power device, 422-supporting piece.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the forward direction of "X" in the drawings represents the right direction, and correspondingly, the reverse direction of "X" represents the left direction; the forward direction of "Y" represents forward, and correspondingly, the reverse direction of "Y" represents rearward; the forward direction of "Z" represents the upward direction, and correspondingly, the reverse direction of "Z" represents the downward direction, and the directions or positional relationships indicated by the terms "X", "Y", "Z", etc. are based on the directions or positional relationships shown in the drawings of the specification, and are only for convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular direction, be constructed and operated in a particular direction, and thus should not be construed as limiting 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 an annular heavy object, which is usually large in tonnage, but because no special hoisting equipment is provided, the hoisting process is bound by a steel wire rope, so that the pipe ring 7 is easily damaged and deformed, and therefore, a brand new special pipe ring hoisting equipment is urgently needed, and the existing problems can be solved.

As shown in fig. 1 and 2, an embodiment of the invention provides a large-tonnage pipe ring hoisting machine, which is used for hoisting a pipe ring 7 with a plurality of hoisting support points 71 on the inner wall, and comprises a frame 1, a traveling structure 2, a hoisting trolley 3 and a hoisting tool structure 4; the frame 1 comprises a main beam 11 and a support leg 12 for supporting the main beam 11, wherein the support leg 12 is fixedly connected with the main beam 11; 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; the lifting appliance structure 4 is detachably connected with the trolley 3; wherein the spreader structure 4 comprises a length adjustable support structure 42; the spreader structure 4 is adapted to lift the pipe loop 7 via the support structure 42 and the hoisting support points 71.

After the large-tonnage pipe ring hoisting machine is adopted, the arrangement of the main beam 11 and the supporting legs 12 can provide a hoisting space; the lifting appliance structure 4 lifts the pipe ring 7 through the supporting structure 42 and the lifting supporting point 71 of the pipe ring 7, and can drive the pipe ring 7 to be transported to a specified position under the action of the walking structure 2; therefore, the pipe ring 7 is hoisted in place, and the problem that the pipe ring 7 is damaged and deformed due to the adoption of a steel wire rope is solved.

In this embodiment, the hoisting support points 71 are pre-arranged in the inner wall of the pipe ring 7, and are generally located in the lower half section of the inner part of the pipe ring 7. Therefore, during hoisting, the sling structure 4 cannot be in direct contact with the pipe ring 7, the problem that the steel wire rope causes damage and deformation of the pipe ring 7 is avoided, specifically, the inner wall of the pipe ring 7 is welded with a plurality of convex blocks serving as hoisting supporting points 71, the plurality of convex blocks can be located on the same plane or different planes, and the specific situation is determined according to actual requirements.

In this embodiment, the main beam 11 and the supporting legs 12 are both box-type structures, and the supporting legs 12 are connected to the main beam 11 by bolts. Specifically, girder 11 is equipped with two and parallel arrangement, and frame 1 adopts the door frame structural style of two girders 11 promptly, assembles by three festival section and constitutes to be convenient for dismouting transportation, connect through connecting plate and bolt between the adjacent festival section. Two ends of each main beam 11 are provided with one supporting leg 12, and the two supporting legs 12 at the same end of the two main beams 11 are fixedly connected through a connecting rod, so that the structural form of the double supporting legs 12 is formed, and the overall running stability is improved during walking.

Optionally, as shown in fig. 5, the spreader structure 4 further comprises a frame body 41; the supporting structure 42 comprises a power device 421 and a supporting member 422 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 to the supporting member 422. Therefore, under the action of the power device 421, the support member 422 can be driven to extend or shorten, so that the support member 422 can be matched with the hoisting support point 71 to complete hoisting of the pipe ring 7; moreover, the pipe ring 7 with different diameters can be adapted, and the universality is stronger.

In this embodiment, the power device 421 is a telescopic oil cylinder or a telescopic air cylinder, and is selected according to actual requirements. As shown in fig. 6, the power unit 421 is preferably a telescopic cylinder for stability. The support member 422 is in the form of an elongated strip, preferably made of a material having a high load-bearing capacity, such as an alloy.

Specifically, as shown in fig. 6, the frame body 41 is provided with a mounting groove structure 411, and the power device 421 is fixedly arranged in the mounting groove structure 411; one end of the supporting member 422 extends out of the mounting groove structure 411, and the other end of the supporting member 422 is located in the mounting groove structure 411 and connected to the telescopic end of the power device 421. From this, power device 421 can be hidden in the setting of mounting groove structure 411, not only plays the guard action, and when hoist and mount, because support piece 422's partly is arranged in mounting groove structure 411, a part gravity also can be undertaken to frame body 41, avoids directly undertaking the gravity by support piece 422 to reduce the probability that support piece 422 fracture condition takes place.

In this embodiment, the inlet of the mounting groove structure 411 and the cross-sectional shape of the supporting member 422 are matched with each other, so as to facilitate the stable operation of the supporting member 422 in the mounting groove structure 411. As shown in fig. 6, the inlet of the mounting groove structure 411 and the supporting member 422 are both square in cross-section, thereby preventing the supporting member 422 from rotating relatively to the mounting groove structure 411 and having stronger stability.

Optionally, the frame body 41 is shaped like a Chinese character jing, and the eight ends of the frame body 41 are provided with the mounting groove structures 411. Therefore, the frame body 41 has a # -shaped structure with eight end parts, and the inner wall of the pipe ring 7 is provided with eight matched hoisting support points 71; after the support 422 and the hoisting support point 71 are assembled in place, one-off hoisting of the pipe ring 7 can be realized.

In this embodiment, the frame body 41 is a box girder, and the shape of the Chinese character 'jing' means: as shown in fig. 5, the four rods adopt a frame structure formed by two transverse rods and two longitudinal rods which are staggered. The depth direction of the mounting groove structure 411 is along the length direction of the rod member.

Optionally, as shown in fig. 7, a guiding structure 6 is further included, the guiding structure 6 is fixedly connected to an end of the supporting member 422 away from the power device 421, and the guiding structure 6 is adapted to guide the pipe ring 7 to be located. From this, be convenient for the collar 7 when transferring, can the position accuracy that falls, the skew appears in the axis of avoiding upper and lower adjacent collar 7.

Specifically, as shown in fig. 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 exceeds the outer edge of the lower end of the pipe ring 7, so that the pipe ring 7 is accurately positioned; and/or, the guide structure 6 comprises a second plate structure 62, and the second plate structure 62 is suitable for being attached to the inner wall of the pipe ring 7, so that the support 422 is stably positioned below the hoisting support point 71. Therefore, the first plate structure 61 is inclined downwards and extends out of the inner wall of the pipe ring 7, so that when the pipe ring 7 is lowered, if the central axes of the upper pipe ring 7 and the lower pipe ring 7 are overlapped, the first plate structure 61 does not work; if the axis of two upper and lower pipe rings 7 does not coincide, the deviation appears promptly, and partial first plate structure 61 can earlier with place the pipe ring 7 inner wall contact that targets in place, because it is the slope, under the effect of 4 gravity of hoist structure, the position of the pipe ring 7 of transferring can carry out automatic adjustment, finally makes the axis coincidence of two pipe rings 7 to realize the accurate of pipe ring 7 and place, guide pipe ring 7 to fall the position promptly, avoid the axis of adjacent pipe ring 7 about to appear squinting. Simultaneously, because the inner wall of pipe ring 7 is the cambered surface, when second plate structure 62 also was the cambered surface, laminate each other, when support piece 422 was located the below of hoist and mount strong point 71, the inner wall of pipe ring 7 was hugged closely to second plate structure 62, played the effect of stabilizing pipe ring 7, avoided pipe ring 7 to rock for hoisting structure.

As shown in fig. 2 and 7, the guiding structure 6 includes a first plate structure 61 and a second plate structure 62, the first plate structure 61 is fixedly disposed at an end of the supporting 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 inclined toward the central axis direction of the pipe ring 7.

Alternatively, as shown in fig. 3, the 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 first power assemblies 32 are respectively arranged at two ends of the frame 31 in the length direction; the first power assembly 32 is fixedly connected to the spreader structure 4 by a connection 34. Thus, by the action of the first power assembly 32, the lifting and lowering of the spreader structure 4 can be effected via the connection 34, facilitating the lifting of the pipe loop 7.

In this embodiment, the length direction means: as shown in fig. 4, the Y-axis is in the direction.

In this embodiment, since the two main beams 11 are provided, as shown in fig. 3, the frame 31 is designed in a long plate shape and spans the two main beams 11. Wherein, frame 31 below is equipped with two track grooves, is equipped with on every girder 11 with track groove complex guide rail, from this, the steady operation of frame 31 on girder 11 of being convenient for avoids appearing rocking.

In this embodiment, the first power assembly 32 is a winch, and the connecting member 34 is a wire rope; thus, the hoist can pull and release the wire rope to cause the hoist structure 4 to ascend or descend. Meanwhile, the frame body 41 of the frame 31 and the hanger structure 4 is provided with the pulley structure 5, and the steel wire rope is wound around the pulley structure 5 between the frame and the hanger structure 4 and is wound on the winch, so that the crane hanger structure 4 is convenient to stabilize. As shown in fig. 4, the pulley structures 5 of the frame 31 are disposed at both ends of the frame 31 in the longitudinal direction; the pulley structure 5 of the holder body 41 is provided on the upper end surface of the holder body 41.

As shown in fig. 1, two trolleys 3 are provided, which are arranged in parallel on the main girder 11, whereby the lifting of the spreader structure 4 is achieved by means of four first power assemblies 32.

Specifically, as shown in fig. 4, the vehicle body further includes a second power assembly 33 capable of extending and retracting, a fixed end of the second power assembly 33 is disposed on the main beam 11, and an extending and retracting end of the second power assembly 33 is connected to the frame 31. As a result, the position of the vehicle frame 31 can be changed by the second power unit 33, and the spreader structure 4 can be urged to be adjusted.

In this embodiment, the second power assembly 33 is a telescopic cylinder or a telescopic cylinder, and the second power assembly 33 is preferably a telescopic cylinder in terms of stability, depending on actual requirements.

Optionally, the second power assemblies 33 are disposed on both sides of the frame 31 in the width direction of the frame 31. Accordingly, 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 means: as shown in fig. 4, the X-axis is in the direction.

Specifically, the telescopic end of the second power assembly 33 is movably connected with the 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 and retract in different directions, the second power assemblies 33 are suitable for driving the frame 31 to rotate horizontally. Therefore, the hoisting cost is reduced, the hoisting speed is greatly increased, and the hoisting danger coefficient is reduced.

As shown in fig. 4, two second power assemblies 33 are respectively disposed on two sides of the frame 31, so that when the two second power assemblies 33 extend and retract in the same direction, the forces exerted on the frame 31 by the two second power assemblies are simultaneously positive or negative along the X-axis, which drives the spreader structure 4 to move linearly in the X-axis direction; when the two second power assemblies 33 extend and retract in different directions, the force of one second power assembly 33 on the frame 31 is in the positive direction of the X axis, the force of the other second power assembly 33 on the frame 31 is in the reverse direction of the X axis, because the second power assemblies 33 are connected with the frame 31 through the pin shafts, the frame 31 can horizontally rotate relative to the two second power assemblies 33, therefore, the horizontal rotation of the lifting appliance structure 4 is realized, the fine adjustment of the position of the lifting appliance structure 4 is convenient, the pipe ring 7 is enabled to accurately fall, the problems that when the existing pipe ring 7 is lifted, as the pipe ring 7 has heavy weight, large volume and changed gravity center position, the eccentric center of the suspension arm of the crane is overlarge, and the hoisting of the multiple cranes is asynchronous, the load distribution of the multi-crane hoisting with different hoisting capacity is uneven, which causes the instability of the hoisting system, and the problems of high cost, large danger coefficient, low hoisting precision and low hoisting speed of a plurality of cranes.

In this embodiment, the fixing end of the second power assembly 33 is provided with a mounting seat, and the second power assembly 33 can horizontally rotate relative to the mounting seat; meanwhile, the fixing seat 35 is fixedly connected to the main beam 11, and therefore, when the two second power assemblies 33 drive the frame 31 to rotate horizontally, the mounting seat and the second power assemblies 33 can also rotate, so that the rotation amplitude of the frame 31 is larger, and the position of the lifting appliance structure 4 can be adjusted more conveniently.

Optionally, as shown in fig. 3, the walking structure 2 includes a balance beam 21, a connecting seat 22, a speed reducer 24 and a trolley 23, wherein the connecting seat 22 is fixedly arranged on the balance beam 21 and detachably connected with the lower end of the supporting leg 12; the two trolleys 23 are symmetrically and fixedly arranged at the lower end of the balance beam 21, each trolley 23 comprises two wheels and is driven by a three-in-one speed reducing motor; therefore, the walking structure 2 can realize the integral movement of the whole machine, and can adopt a wheel-rail structure form, namely, a guide rail for the running of wheels is paved in advance, so that the whole machine can run back and forth on a specified route.

The large-tonnage pipe ring hoisting machine of the embodiment comprises the following steps of:

(1) the whole machine is operated to the pipe ring 7 assembling position, and the lifting appliance structure 4 is lowered to the assembling 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 running mechanisms of the hoist are operating normally.

(2) And the eight supporting pieces 422 extend to a designated position (slightly smaller than the inner diameter of the pipe ring 7), and the pipe ring 7 is spliced by taking the end faces of the eight hoisting supporting points 71 as references.

It should be noted that during the assembly process, it is noted whether the hoist support points 71 of the pipe loop 7 are above the support 422.

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

It should be noted that before the trolley 3 is lifted, it should be ensured that the support 422 carries the hoist support points 71, without the hoist support points 71 being dislocated or detached.

(4) And the walking structure 2 moves, and the whole machine moves to a specified position.

It should be noted that before the travelling structure 2 moves, the running condition of the wheels is noticed during the running process, so as to prevent the wheels from riding the rails.

(5) The hoist structure 4 is transferred, transfers the flexible hydro-cylinder on the in-process accessible trolley 3 and walks capable structure 2 and finely tune the position of pipe ring 7, treats that pipe ring 7 is unanimous basically with below pipe ring 7 position, transfers hoist structure 4, under the effect of hoist structure 4's first plate structure 61, utilizes hoist structure 4's dead weight to make pipe ring 7 landing to the assigned position.

It should be noted that, in the hoist structure 4 process of transferring, should pay attention to whether there is interference part around, whole process of transferring should be steady orderly, arrange the observation personnel all around and pay attention to the connection condition of eave tile and prevent that hoist structure 4 from rocking the risk that arouses.

(6) After the pipe ring 7 is placed, the supporting piece 422 retracts to a specified position, so that the lifting appliance structure 4 is separated from the pipe ring 7, and the lifting appliance structure 4 is lifted to a specified height.

(7) And (5) running the walking structure 2, returning the whole machine to the installation position of the pipe ring 7, and repeating the steps (1) - (6) until the final hoisting is finished.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

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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