阅读说明：本技术 主塔整体吊装系统及方法 (Main tower integral hoisting system and method ) 是由 张克 王翔 邓永锋 兰其平 李璘琳 黄辉 叶绍其 涂满明 徐进 陈晓剑 周超舟 于 2019-09-30 设计创作，主要内容包括：本发明涉及梁施工领域,本发明公开了一种主塔整体吊装系统及方法,该系统包括：上吊具,其用于固定设置在主塔的中部,上吊具包括：扁担梁,其中部间隔设有两组连接装置,每组连接装置包括设于扁担梁两侧的第一连接件；两个起吊梁,其分别设于扁担梁的两端,每个起吊梁的中部与扁担梁的两端转动连接,每个起吊梁的两端设有第二连接件。还包括第二浮吊装置,其通过起吊绳与第二连接件连接。还包括下吊具,其用于固定设置在主塔的端部,以配合上吊具吊起主塔并使主塔转动至竖直。还包括第一浮吊装置,其通过起吊绳与下吊具连接。本发明能有效地解决主塔现场焊接施工复杂的问题。(The invention relates to the field of beam construction, and discloses a main tower integral hoisting system and a method, wherein the system comprises: go up the hoist, it is used for the fixed middle part that sets up at the main tower, goes up the hoist and includes: the middle part of the carrying pole beam is provided with two groups of connecting devices at intervals, and each group of connecting devices comprises first connecting pieces arranged at two sides of the carrying pole beam; the two lifting beams are respectively arranged at two ends of the carrying pole beam, the middle part of each lifting beam is rotatably connected with two ends of the carrying pole beam, and two ends of each lifting beam are provided with second connecting pieces. The second floating crane device is connected with the second connecting piece through a lifting rope. The lifting device further comprises a lower lifting appliance which is fixedly arranged at the end part of the main tower and is matched with the upper lifting appliance to lift the main tower and enable the main tower to rotate to be vertical. The lifting device comprises a lower lifting appliance and a first floating lifting device, wherein the lower lifting appliance is connected with the lower lifting appliance through a lifting rope. The invention can effectively solve the problem of complex field welding construction of the main tower.)

1. A main tower integral hoisting system is characterized by comprising:

go up hoist (1), it is used for the fixed middle part that sets up at the main tower, go up hoist (1) and include:

-a carrying pole beam (11) provided with two sets of connecting means at intervals in the middle thereof, each set of connecting means comprising first connecting members (111) provided on both sides of said carrying pole beam (11);

-two lifting beams (12) respectively arranged at both ends of the carrying pole beam (11), the middle part of each lifting beam (12) being rotatably connected with both ends of the carrying pole beam (11), both ends of each lifting beam (12) being provided with a second connecting member (121);

A second floating crane device (5) connected with the second connecting piece (121) through a lifting rope;

The lower lifting appliance (2) is fixedly arranged at the end part of the main tower, and is matched with the upper lifting appliance (1) to lift the main tower and enable the main tower to rotate to be vertical;

A first floating crane device (4) connected with the lower sling (2) through a lifting rope.

2. The main tower integral hoisting system of claim 1, wherein: the lower spreader (2) comprises:

-four stiffening plates (21) for being arranged in the main tower leg (3), respectively, wherein two adjacent stiffening plates (21) are provided with mutually parallel fixing lugs (211);

-four connecting rods (22) which fixedly connect the four reinforcement plates (21) to each other;

-a lower suspension beam (23) provided at both ends with two rotary lifting lugs (231) corresponding to the fixed lifting lugs (211), and the middle of the lower suspension beam (23) is provided with two sets of third connecting members (232) arranged at intervals.

3. The main tower integral hoisting system of claim 2, wherein: the third connecting piece (232) comprises a second pin shaft (2321) and two second pulleys (2322), the second pin shaft (2321) penetrates through the lifting beam (12), and the two second pulleys (2322) are respectively and rotatably arranged on the second pin shafts (2321) on two sides of the lifting beam (12).

4. The main tower integral hoisting system of claim 2, wherein: and reinforcing rods (24) are arranged in the middle parts of two adjacent connecting rods (22) in the four connecting rods (22).

5. the main tower integral hoisting system of claim 1, wherein: the first connecting piece (111) comprises two connecting pin shafts (1112) and two connecting plates (1111) which are arranged on two sides of the shoulder pole beam (11) respectively, and pin holes matched with the connecting pin shafts (1112) are formed in the connecting plates (1111).

6. The main tower integral hoisting system of claim 1, wherein: the second connecting member (121) comprises a first pin (1211) and two first pulleys (1212), the first pin (1211) penetrates through the lifting beam (12), and the two first pulleys (1212) are respectively and rotatably arranged on the first pins (1211) on two sides of the lifting beam (12).

7. the main tower integral hoisting system of claim 1, wherein: the second floating crane device (5) comprises two suspension arms which are arranged at intervals, and each suspension arm is connected with the second connecting piece (121) of one lifting beam (12) through a lifting rope.

8. the main tower integral hoisting system of claim 1, wherein: the carrying pole beam (11) and the lifting beam (12) are of steel lattice box structures.

9. A hoisting method implemented by using the main tower integral hoisting system according to claim 1, characterized by comprising the steps of:

S1: the method comprises the following steps that a main tower is conveyed to a preset position, an upper lifting appliance (1) is installed in the middle of the main tower through a first connecting piece (111), and a lower lifting appliance (2) is installed at the end of the main tower;

s2: simultaneously retracting lifting ropes of the first floating crane device (4) and the second floating crane device (5) to lift the main tower to a preset height, keeping the second floating crane device (5) still, lowering the lifting rope of the first floating crane device (4), and moving towards the second floating crane device (5) to rotate the main tower by a preset angle;

s3: repeating the step S2 until the main tower rotates to be vertical;

s4: and (5) placing the main tower at the pier design position by using a second floating crane device (5) and completing subsequent construction.

10. The main tower integral hoisting method according to claim 9, wherein after the step S4, the connection between the upper spreader (1) and the main tower is removed, the upper spreader is pulled or pushed by a jack and moved out of the main tower, and then the upper spreader is hoisted to the next main tower hoisting position by the first floating crane device (4).

Technical Field

the invention relates to the field of beam construction, in particular to a main tower integral hoisting system and a method.

Background

The main tower is a supporting structure for arranging stay cables for a cable-stayed bridge and comprises a concrete cable tower and a main tower. When the conventional main tower is processed, the integral volume and weight are large, so that the integral hoisting difficulty is large.

The common method for manufacturing the main tower is to process the main tower into a plurality of sections, and a lifting lug is arranged at the top of each section. When the main tower is installed, a plurality of sections are sequentially hoisted to installation position points through a floating crane or a tower crane according to the sequence of the installation sections, and then the sections are welded, assembled and spliced section by section at the installation position points until the complete main tower is formed.

however, the position environment of the general bridge construction is severe, the field welding and assembling construction operation is influenced by multiple factors including wind, rain, wave, salt and alkali, the field welding quality is difficult to be stably ensured, and meanwhile, when the main tower structure is large, the construction difficulty is too high by adopting the field welding and assembling operation, and the construction quality is difficult to control.

disclosure of Invention

aiming at the defects in the prior art, the invention aims to provide a main tower integral hoisting system and a main tower integral hoisting method, which can effectively solve the problem that the field welding construction of a main tower is complex.

in order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

a main tower integral hoisting system comprising:

Go up the hoist, it is used for the fixed middle part that sets up at the main tower, go up the hoist and include:

-a carrying pole beam, wherein two sets of connecting devices are arranged at intervals in the middle of the carrying pole beam, and each set of connecting devices comprises first connecting pieces arranged on two sides of the carrying pole beam;

Two lifting beams, which are respectively arranged at two ends of the carrying pole beam, wherein the middle part of each lifting beam is rotatably connected with two ends of the carrying pole beam, and two ends of each lifting beam are provided with second connecting pieces;

The second floating crane device is connected with the second connecting piece through a lifting rope;

The lower lifting appliance is fixedly arranged at the end part of the main tower and is matched with the upper lifting appliance to lift the main tower and enable the main tower to rotate to be vertical;

and the first floating crane device is connected with the lower lifting appliance through a lifting rope.

On the basis of the technical scheme, the lower lifting appliance comprises:

Four reinforcing plates, which are respectively arranged in the main tower legs, wherein two adjacent reinforcing plates are provided with mutually parallel fixing lugs;

Four connecting rods, which fixedly connect the four reinforcing plates;

The two ends of the lower hanging beam are provided with two rotating lifting lugs corresponding to the fixed lifting lugs, and the middle part of the lower hanging beam is provided with two groups of third connecting pieces arranged at intervals.

On the basis of the technical scheme, the third connecting piece comprises a second pin shaft and two second pulleys, the second pin shaft penetrates through the lifting beam, and the two second pulleys are respectively and rotatably arranged on the second pin shafts on two sides of the lifting beam.

On the basis of the technical scheme, the middle parts of two adjacent connecting rods in the four connecting rods are provided with reinforcing rods.

On the basis of the technical scheme, the first connecting piece comprises two connecting pin shafts and two connecting plates which are respectively arranged on two sides of the shoulder pole beam, and pin holes matched with the connecting pin shafts are formed in the connecting plates.

on the basis of the technical scheme, the second connecting piece comprises a first pin shaft and two first pulleys, the first pin shaft penetrates through the lifting beam, and the two first pulleys are respectively and rotatably arranged on the first pin shafts on two sides of the lifting beam.

On the basis of the technical scheme, the second floating crane device comprises two suspension arms which are arranged at intervals, and each suspension arm is connected with the second connecting piece of one lifting beam through a lifting rope.

On the basis of the technical scheme, the carrying pole beam and the lifting beam are of steel lattice box structures.

On the other hand, the invention also provides a main tower integral hoisting method, which comprises the following steps:

s1: the method comprises the following steps of conveying a main tower to a preset position, installing an upper lifting appliance in the middle of the main tower through a first connecting piece, and installing a lower lifting appliance at the end part of the main tower;

S2: simultaneously retracting lifting ropes of the first floating crane device and the second floating crane device to lift the main tower to a preset height, keeping the second floating crane device still, lowering the lifting rope of the first floating crane device, advancing to the second floating crane device, and rotating the main tower by a preset angle;

S3: repeating the step S2 until the main tower rotates to be vertical;

s4: and (5) placing the main tower at the pier column design position by using a second floating crane device, and completing subsequent construction.

on the basis of the technical scheme, after the step S4 is completed, the connection between the upper lifting appliance and the main tower is removed, the upper lifting appliance is pulled or pushed by a jack and moved out of the outer side of the main tower, and then the upper lifting appliance is lifted to the lifting position of the next main tower by using the first floating crane device.

compared with the prior art, the invention has the advantages that: when the main tower integral hoisting system and the method are used, the middle part of a main tower at a preset position is provided with the upper hoisting tool through the first connecting piece, the end part of the main tower is provided with the lower hoisting tool, the first floating hoisting device is connected with the lower hoisting tool through the hoisting rope, and the second floating hoisting device is connected with the second connecting piece through the hoisting rope. The lifting points of the upper lifting appliance are multiple in structure, the lifting points are arranged in a symmetrical distribution mode, the stress safety of the structure in the lifting process is enhanced, the middle of each lifting beam is rotatably connected with the two ends of each shoulder pole beam, the lifting stability is enhanced, the shoulder pole beams can be always in a horizontal state, and the stress state of the shoulder pole beams is guaranteed. Thus, the whole main tower can be adjusted to the pier through the crane. The first floating crane device is connected with the lower lifting appliance to support the lower lifting point, the second floating crane device is connected with the upper lifting appliance, and the first floating crane device and the second floating crane device are matched with the upper lifting appliance and the lower lifting appliance to lift the main tower and enable the main tower to rotate to be vertical.

Drawings

Fig. 1 is a schematic top view of an upper spreader in an embodiment of the present invention;

fig. 2 is a schematic side view of an upper spreader in an embodiment of the present invention;

FIG. 3 is a schematic top view of a lower spreader in an embodiment of the present invention;

Fig. 4 is a schematic side view of a lower spreader in an embodiment of the present invention;

fig. 5 is a front view schematically illustrating the lower spreader according to an embodiment of the present invention;

FIG. 6 is a state diagram of the step S1 of the method for hoisting the main tower as a whole according to the embodiment of the present invention;

FIG. 7 is a state diagram of the step S2 of the method for hoisting the main tower as a whole according to the embodiment of the present invention;

fig. 8 is a state diagram of the step S3 of the method for hoisting the main tower as a whole according to the embodiment of the present invention.

In the figure: 1. lifting a lifting appliance; 11. a shoulder pole beam; 111. a first connecting member; 1111. a connecting plate; 1112. connecting a pin shaft; 12. lifting the lifting beam; 121. a second connecting member; 1211. a first pin shaft; 1212. a first pulley; 2. a lower lifting appliance; 21. a reinforcing plate; 211. fixing the lifting lug; 22. a connecting rod; 23. a lower hanging beam; 231. rotating the lifting lug; 232. a third connecting member; 3. a main tower leg; 4. a first floating crane device; 5. and a second floating crane device.

Detailed Description

the present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic top view of an upper spreader in an embodiment of the present invention; fig. 2 is a schematic side view of an upper spreader according to an embodiment of the present invention. Referring to fig. 1, 2 and 6:

The embodiment of the invention provides a main tower integral hoisting system, which comprises:

go up hoist 1, it is used for installing at last hoisting point, goes up hoist 1 and includes: the middle part of the shoulder pole beam 11 is provided with two groups of connecting devices at intervals, and each group of connecting devices comprises first connecting pieces 111 arranged at two sides of the shoulder pole beam 11; and the two lifting beams 12 are respectively arranged at two ends of the carrying pole beam 11, the middle part of each lifting beam 12 is rotatably connected with two ends of the carrying pole beam 11, and two ends of each lifting beam 12 are provided with second connecting pieces 121.

And the second floating crane device 5 is connected with the second connecting piece 121 through a lifting rope.

and the lower lifting appliance 2 is fixedly arranged at the end part of the main tower, and is matched with the upper lifting appliance 1 to lift the main tower and enable the main tower to rotate to be vertical.

and the first floating crane device 4 is connected with the lower lifting appliance 2 through a lifting rope.

when the main tower integral hoisting tool is used, the main tower is conveyed to a preset position, the hoisting tool 1 is installed in the middle of the main tower through the first connecting piece 111, the lower hoisting tool 2 is installed at the end part of the main tower, the first floating hoisting device 4 is connected with the lower hoisting tool 2 through a hoisting rope, and the second floating hoisting device 5 is connected with the second connecting piece 121 through a hoisting rope. The lifting points of the upper lifting appliance 1 are multiple in structure, 4 lifting points are arranged and are symmetrically distributed, the stress safety of the lifting process structure is enhanced, the middle of each lifting beam 12 is rotatably connected with the two ends of each carrying pole beam 11, the lifting stability is enhanced, the carrying pole beams 11 can be always in a horizontal state, and the stress state of the carrying pole beams is guaranteed. Thus, the whole main tower can be adjusted to the pier through the crane. The first floating crane device 4 is connected with the lower lifting appliance 2 to support a lower lifting point, the second floating crane device 5 is connected with the upper lifting appliance 1, and the first floating crane device 4 and the second floating crane device 5 are matched with the upper lifting appliance 1 and the lower lifting appliance 2 to lift the main tower and enable the main tower to rotate to be vertical.

FIG. 3 is a schematic top view of a lower spreader in an embodiment of the present invention; fig. 4 is a schematic side view of a lower spreader in an embodiment of the present invention; fig. 5 is a front view schematically illustrating the lower spreader according to an embodiment of the present invention; referring to fig. 3 to 5:

Preferably, the lower spreader 2 comprises: the four reinforcing plates 21 are respectively arranged in the main tower supporting legs 3, wherein two adjacent reinforcing plates 21 are provided with mutually parallel fixing lifting lugs 211; four connecting rods 22 which fixedly connect the four reinforcing plates 21; two ends of the lower hanging beam 23 are provided with two rotating lifting lugs 231 corresponding to the fixed lifting lugs 211, and the middle part of the lower hanging beam 23 is provided with two groups of third connecting pieces 232 arranged at intervals.

In this embodiment, the lifting points of the lower lifting appliance 2 are uniform, a double-lifting-point form is adopted, and reinforcing plates are arranged in the main tower supporting legs 3, so that the stress of the main tower supporting legs 3 is ensured.

Preferably, the third connecting member 232 includes a second pin 2321 and two second pulleys 2322, the second pin 2321 passes through the lifting beam 12, and the two second pulleys 2322 are respectively rotatably disposed on the second pins 2321 at two sides of the lifting beam 12.

In this embodiment, the two second pulleys 2322 respectively disposed at two sides of the lifting beam 12 are connected to each other by a lifting rope, so that the lifting beam 12 is stressed more uniformly. The multi-hinge point connection is adopted, the freedom degree of the lifting appliance is greatly enhanced, the unbalance loading of different lifting positions is avoided, the control of the rotation angle of the main tower is facilitated, and the lifting process is more stable.

preferably, the central portions of two adjacent links 22 of the four links 22 are provided with reinforcing rods 24.

In this embodiment, the reinforcing rods 24 are disposed in the middle of two adjacent connecting rods 22, so that the structure is not greatly deformed during the hoisting process, and the hoisting operation quality is improved.

Referring again to fig. 1 and 2, preferably, the first connecting member 111 includes two connecting pins 1112 and two connecting plates 1111 respectively disposed at both sides of the carrying pole beam 11, and the connecting plates 1111 are provided with pin holes for engaging with the connecting pins 1112.

in this embodiment, a connecting plate with a pin hole corresponding to the first connecting member 111 is welded between the main tower legs on both sides, and the upper hanger 1 is fixed on the upper hanging point by the connecting plate 1111 and the pin 1112.

Preferably, the second connecting member 121 includes a first pin 1211 and two first pulleys 1212, the first pin 1211 passes through the lifting beam 12, and the two first pulleys 1212 are rotatably disposed on the first pin 1211 at both sides of the lifting beam 12, respectively.

In this embodiment, the carrying pole beam 11 is connected to the lifting beam 12 through a pin, and the carrying pole beam 11 is connected to the main tower connecting member through a pin, so that the freedom of the spreader is greatly increased due to the multi-hinge-point structure, and uneven stress of the spreader caused by unbalance loading due to various factors can be avoided.

each second connecting member 121 includes a first pin 1211 and two first pulleys 1212, so as to avoid uneven load on the spreader caused by an unbalanced load.

Preferably, the carrying pole beam 11 and the lifting beam 12 are of a steel lattice box structure. In the embodiment, the carrying pole beam 11 and the lifting beam 12 adopt rectangular steel lattice box structures, so that the lifting appliance has larger lifting weight, and compared with the conventional truss rod lifting appliance, the lifting appliance has larger integral structural rigidity and stronger instability resistance.

FIG. 6 is a state diagram of the step S1 of the method for hoisting the main tower as a whole according to the embodiment of the present invention; FIG. 7 is a state diagram of the step S2 of the method for hoisting the main tower as a whole according to the embodiment of the present invention; fig. 8 is a state diagram of the step S3 of the method for hoisting the main tower as a whole according to the embodiment of the present invention. Referring to fig. 6 to 8:

The invention also provides a main tower integral hoisting method, which comprises the following steps:

s1: the main tower is conveyed to a preset position, an upper lifting appliance 1 is installed in the middle of the main tower through a first connecting piece 111, and a lower lifting appliance 2 is installed at the end of the main tower;

S2: simultaneously retracting the lifting ropes of the first floating crane device 4 and the second floating crane device 5 to lift the main tower to a preset height, keeping the second floating crane device 5 still, lowering the lifting rope of the first floating crane device 4, advancing to the second floating crane device 5, and rotating the main tower by a preset angle;

S3: repeating the step S2 until the main tower rotates to be vertical;

S4: and (5) placing the main tower at the pier design position by using a second floating crane device 5, and completing subsequent construction.

Preferably, after the step S4 is completed, the connection between the upper spreader 1 and the main tower is removed, the upper spreader is pulled or pushed by a jack and moved out of the outer side of the main tower, and then the upper spreader is lifted to the next main tower lifting position by the first floating crane device 4.

the method for integrally hoisting the main tower of the main tower comprises the following specific steps:

in this embodiment, the first floating crane device 4 is a 1000t floating crane, the second floating crane device 5 is a 3600t floating crane, and the main tower is a steel tower.

The main tower is ready for hoisting, i.e. the main tower is transported to a preset position by a barge, the upper spreader 1 is installed at the middle part of the main tower through the first connecting member 111, and the lower spreader 2 is installed at the end part of the main tower. And starting lifting formally, the angle of the derrick mast of the floating crane 3600t is 62.98 degrees, the lifting amplitude is 49m, the angle of the derrick mast of the 1000t floating crane is 70 degrees, and the lifting amplitude is 26.1 m. And (4) loading the two floating cranes to a designed tonnage in stages until the main tower is separated from the barge, lifting the main tower by 1m, taking the main tower to be 14m away from the water surface, and withdrawing the main tower through the anchor mooring flat-bed barge.

the main tower is continuously lifted to 31m away from the water surface by the two floating cranes at the same time; the lifting is carried out for 5 times, namely 3+3+4+3+4(m), the total lifting height is 17m, and the distance from the water surface is 31 m. Specifically, the method comprises the following steps:

3600t of the height of a lifting point of the floating crane and the self state of the floating crane are kept unchanged; the main tower is lowered through the height of a 1000t floating crane lifting point and the 1000t floating crane self-mooring anchor moves forward, so that the main tower rotates by 40 degrees. The 1000t floating crane needs to move forwards by 6991mm totally, and the total lowering height is 37575 mm.

The main tower is continuously lifted to a distance of 34m from the water surface by the two floating cranes at the same time; the lifting is carried out for 1 time, the lifting height is 3m, and the distance from the water surface is 34 m.

3600t of the height of a lifting point of the floating crane and the self state of the floating crane are kept unchanged; the main tower is lowered through the height of a lifting point of the 1000t floating crane and goes forward through the anchor of the 1000t floating crane, so that the main tower rotates by 5 degrees again, namely rotates to 45 degrees. The 1000t floating crane needs to move ahead 2658mm totally, and the total lowering height is 4086 mm.

the main tower is continuously lifted to 36m away from the water surface by the two floating cranes at the same time; the lifting is carried out for 1 time, the lifting height is 2m, and the distance from the water surface is 36 m.

3600t of the height of a lifting point of the floating crane and the self state of the floating crane are kept unchanged; the main tower is lowered through the height of a lifting point of the 1000t floating crane and goes forward through the anchor of the 1000t floating crane, so that the main tower rotates by 5 degrees again, namely, the main tower rotates to 50 degrees. The 1000t floating crane needs to move forwards by 3004mm totally, and the total lowering height is 3839 mm.

The main tower is continuously lifted to 39m away from the water surface by the two floating cranes at the same time; the lifting is carried out for 1 time, the lifting height is 3m, and the distance from the water surface is 39 m.

3600t of the height of a lifting point of the floating crane and the self state of the floating crane are kept unchanged; the main tower is lowered through the height of a lifting point of the 1000t floating crane and goes forward through the anchor of the 1000t floating crane, so that the main tower rotates by 5 degrees again, namely, the main tower rotates to 55 degrees. The 1000t floating crane needs to move forwards by 3327mm totally, and the total lowering height is 3563 mm.

the main tower is continuously lifted to 62m away from the water surface by the two floating cranes at the same time; the lifting is carried out for 6 times, namely 4+4+4+4+4+3(m), the total lifting height is 23m, and the distance from the water surface is 62 m.

3600t, the angle of the floating crane derrick mast is rotated to 66.4 degrees from 62.98 degrees, namely the hoisting width of the floating crane derrick mast is rotated to 42m from 49 m; lifting the lifting point of the 3600t floating crane by 7753mm and advancing by 7000 mm; the 1000t floating crane lifting point is also synchronously lifted by 7753mm and advanced by 7000 mm; ensuring that the main tower attitude remains unchanged.

3600t of the height of a lifting point of the floating crane and the self state of the floating crane are kept unchanged; the main tower is lowered through the height of a 1000t floating crane hoisting point and the 1000t floating crane self-mooring anchor moves forward, so that the main tower rotates by 35 degrees, namely the whole main tower rotates to 90 degrees. The 1000t floating crane needs to advance 29951mm in total, and the total lowering height is 15236 mm.

3600t of floating crane continues to lift the main tower, and the lifting height is 48.43m from the bottom of the main tower to the water surface; 3600t floating crane hoists main tower anchor to advance to the position of the pier column, and the total advance is 218 m.

after 3600T of floating crane anchor moves forward to the pier stud design position, the main tower is placed to be in butt joint with a tower stud T0 section on the main beam; and (5) installing splice plates to finish the connection construction of the main tower.

And (4) removing the connecting pin shaft of the main tower and the connecting piece, and putting the main tower hanger onto the main beam slideway beam. And (4) pulling or pushing the main tower lifting appliance by using a jack, and moving the main tower lifting appliance out of the outer side of the tower column. And then lifting the main tower lifting appliance off by using the 3600t floating crane, and transferring to the next main tower. And (5) mounting a tower cap by using a tower top hanger.

In conclusion, the invention provides a main tower integral hoisting system and method, which not only can realize integral hoisting construction and installation of a larger main tower structure, but also can effectively solve the problems of insufficient stability of a hoisting tool, limitation of the hoisting structure by the height of a floating crane mast and the like in the hoisting process of the traditional steel tower, and enhance the safety of hoisting operation.

the present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.