CN114737816B - Mast dismantling method for lifting high-altitude operation platform by adopting shoulder pole beam - Google Patents
Mast dismantling method for lifting high-altitude operation platform by adopting shoulder pole beam Download PDFInfo
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- CN114737816B CN114737816B CN202210427494.6A CN202210427494A CN114737816B CN 114737816 B CN114737816 B CN 114737816B CN 202210427494 A CN202210427494 A CN 202210427494A CN 114737816 B CN114737816 B CN 114737816B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
- E04H12/348—Arrangements for demolition towers or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a mast dismantling method for lifting an overhead operation platform by adopting a shoulder pole beam, which adopts a scheme of sectional dismantling to dismantle a mast and a triangular truss section by section, a scaffold is erected in the range of the triangular truss for sectional dismantling of the triangular truss, an operation platform is respectively arranged on each section of mast and used for welding lifting lugs for dismantling and a construction platform for cutting the last section of mast, and the positions of lifting points and lifting appliances of the operation platform are changed by arranging the adaptive shoulder pole beam, so that the masts are avoided, two operation platforms can be lifted at one time, the operation is convenient, the lifting efficiency is high, and the dismantling efficiency of the masts is improved.
Description
Technical Field
The invention relates to the technical field of mast dismantling, in particular to a mast dismantling method for lifting an overhead operating platform by adopting a shoulder pole beam.
Background
The northeast corner side of the roof of a super high-rise building built for many years is provided with a decorative mast, and for some reasons owners decide to dismantle the roof mast. Referring to fig. 1, the mast consists of two symmetrical triangular trusses 1 and independent mast 2 antennas, the total height is about 51.2m, the upper independent mast antenna length is about 21.5m, and the lower triangular truss length is about 29.7m. The distance between the two triangular trusses is 9.3m, and two middle tie bars are arranged between the triangular trusses. All the rods are connected through full welding, the main specifications of the steel pipes are D1300X 20, D1100X 20 and D900X 18, and the total weight of the mast is about 230 tons.
The mast is generally cut and dismantled in a sectioning mode, when the mast is dismantled, an operation platform needs to be installed on the mast for cutting by workers, the operation platform is lifted by using a tower crane in the conventional method, but when a single operation platform is lifted, the lifting point and the lifting appliance of the operation platform are just in conflict with the mast, so that the operation platform cannot be lifted or the operation platform is lifted by using a hoist through a chain block, but the engineering mast is large in independent height, smooth in surface, free of positions where the hoist can be hung, and inconvenient for people to operate.
Disclosure of Invention
The invention provides a mast dismantling method for lifting an overhead operating platform by adopting a shoulder pole beam, which changes the positions of a lifting point and a lifting appliance of the operating platform, avoids the masts, can lift two operating platforms at one time, and has convenient operation and high lifting efficiency.
The technical problems to be solved are as follows: the conventional practice of mast removal is to use a tower crane to lift the operating platform, but when a single operating platform is lifted, its lifting point and spreader just collide with the mast, rendering the operating platform unable to be lifted.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention discloses a mast dismantling method for lifting an aerial operation platform by adopting a shoulder pole beam, which comprises the following steps of:
step 1: the method comprises the steps that a sectional dismantling scheme is adopted to dismantle masts and triangular trusses, and an operation platform is respectively installed on each section of masts and used for welding lifting lugs after dismantling and a construction platform for cutting the masts at the last section;
step 2: setting up a full scaffold in the range of the triangular truss, and installing a bracket for an operation platform at the lower part of the mast;
step 3: the operation platform is divided into two halves for installation, one half is temporarily fixed after being hoisted on a bracket, then the other half is hoisted, and the two halves are integrally assembled after the completion;
step 4: hoisting the carrying pole beam, enabling two ends of the carrying pole beam to be respectively inserted into two masts, respectively connecting each end of the carrying pole beam with an operation platform through four steel wire ropes, and removing temporary fixation of the operation platform to prepare for lifting;
step 5: synchronously lifting the two operation platforms along the mast antenna by lifting the shoulder pole beam;
step 6: lifting a first group of operation platforms to the upper part of a mast to serve as a working platform for welding lifting lugs used for lifting the first section of mast after the first section of mast is removed, after the operation platforms are lifted in place, entering the operation platforms by personnel, temporarily fixing the operation platforms, welding and fixing the operation platforms and the mast by utilizing a horizontal support and an inclined support, and sealing the bottom surface of the operation platforms by utilizing a steel plate net; reversely executing the step 3, withdrawing the shoulder pole beam from the mast, and repeating the steps 3-6 to sequentially mount the subsequent operation platform from top to bottom;
step 7: sequentially cutting and dismantling masts from top to bottom, lifting an operation platform on each section of masts along with the masts to a roof after each section of masts are cut, and standing the last section of masts on a scaffold for cutting;
step 8: and (5) dismantling the triangular truss section on the scaffold, and lifting the triangular truss section to the roof.
According to the mast dismantling method for lifting the high-altitude operation platform by adopting the shoulder pole beams, further, four brackets are arranged on each mast and are divided into two groups, the four brackets are symmetrically arranged on two opposite sides of the mast, and angle steel connection is adopted between each group of brackets; the support comprises a horizontal rod piece and an inclined rod piece, wherein one ends of the horizontal rod piece and the inclined rod piece are connected with each other.
The invention discloses a mast dismantling method for lifting an aerial operation platform by adopting a shoulder pole beam, which is characterized in that the temporary fixation in the step 3 and the step 6 is specific, a safety steel wire rope is surrounded on a mast and connected by a shackle, the safety steel wire rope is fixed on a mast cat ladder by a clamping ring, four locks for fixing a chain block are arranged on the safety steel wire rope, one end of the chain block is connected with the locks, the other end of the chain block is connected with the operation platform, and the operation platform is temporarily fixed.
The invention discloses a mast dismantling method for lifting an overhead operation platform by adopting a shoulder pole beam.
The invention discloses a mast dismantling method for lifting an overhead operation platform by adopting a shoulder pole beam.
According to the mast dismantling method for lifting the high-altitude operation platform by adopting the shoulder pole beams, in step 5, when the operation platform is lifted, two slide ropes are hung on each operation platform, and personnel control the moving direction and the shaking amplitude of the operation platform through the slide ropes in the process of lifting the operation platform.
According to the mast dismantling method for lifting the high-altitude operation platform by adopting the shoulder pole beam, in the step 4, when the shoulder pole beam is lifted, one side of the shoulder pole beam is firstly close to the mast antenna, one end of the shoulder pole beam is firstly inserted into the mast antenna, the other end of the shoulder pole beam is assisted by a sliding rope, the shoulder pole is slowly swung, after the shoulder pole beam is swung, the shoulder pole Liang Pingwen is assisted by the sliding rope, and the whole body of the shoulder pole beam is horizontally moved to the other side, so that the shoulder pole beam is in place.
The invention discloses a mast dismantling method for lifting an overhead operating platform by adopting a shoulder pole beam, which is further characterized in that the shoulder pole beam comprises two parallel main beams, inclined struts and horizontal struts, wherein the inclined struts are used for connecting the two main beams, U-shaped spaces with outward openings are respectively formed at two ends of the main beams, an anti-blocking assembly is arranged at the inner side of the end part of the main beam, and the anti-blocking assembly comprises a circular arc section protruding away from one side of the main beam.
The invention discloses a mast dismantling method for lifting an overhead operating platform by adopting a shoulder pole beam, which is further characterized in that a sectional rod piece lifted to a roof is secondarily decomposed into small components and then lifted to the ground for transportation.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the method, the mast and the triangular truss are removed section by adopting a sectional removal scheme, a scaffold is erected in the range of the triangular truss for sectional removal of the triangular truss, and an operation platform is respectively arranged on each section of mast and used for lifting lugs after welding and removing and a construction platform for cutting the previous section of mast, so that the method is convenient to operate and convenient for removing the mast and the triangular truss;
2. by arranging the adaptive shoulder pole beams, the positions of the lifting points of the operation platforms and the lifting appliance are changed, the mast is avoided, the two operation platforms can be lifted at one time, the operation is convenient, and the lifting efficiency is high;
3. the universal wheels are arranged on the operation platform, so that the operation platform can be prevented from being clamped with the mast antenna in the lifting process;
4. the anti-blocking component is arranged on the inner side of the shoulder pole beam, so that the shoulder pole beam is prevented from being blocked with the mast when being lifted.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a structure of the background art of the invention;
FIG. 2 is a top view of the bracket mounting of the present invention;
FIG. 3 is a side view of the mounting of the bracket of the present invention;
FIG. 4 is a schematic perspective view of an operating platform of the present invention;
FIG. 5 is a top view of the operator's platform according to the present invention;
FIG. 6 is a cross-sectional view of an operating platform of the present invention;
FIG. 7 is a schematic view of the structure of the universal wheel mounting of the present invention;
FIG. 8 is a schematic plan view of a shoulder pole beam of the present invention;
FIG. 9 is a schematic view of the mating structure of the main beam and anti-seize assembly of the present invention;
FIG. 10 is a schematic view of the structure of an end of a shoulder pole beam of the present invention inserted into a mast;
FIG. 11 is a schematic illustration of the positive construction of the shoulder pole Liang Bai of the present invention;
FIG. 12 is a schematic view of a translating in-place construction of a shoulder pole beam of the present invention;
fig. 13 is a schematic structural view of a lifting operation platform for a shoulder pole beam according to the present invention.
Reference numerals:
1. triangular truss; 2. a mast; 3. a bracket; 31. angle steel; 32. a horizontal bar; 33. a tilting lever; 4. an operating platform; 41. a support frame; 42. a guard rail; 43. a channel; 44. a universal wheel; 5. a shoulder pole beam; 51. a main beam; 52. diagonal bracing; 53. a horizontal support; 54. a U-shaped space; 55. an anti-seize assembly; 56. reinforcing the diagonal rods; 6. a horizontal support; 7. and (5) supporting obliquely.
Detailed Description
The invention discloses a mast dismantling method for lifting an overhead operation platform by adopting a shoulder pole beam, which comprises the following steps of:
step 1: the mast 2 and the triangular truss 1 are dismantled by adopting a scheme of sectional dismantling, and an operation platform 4 is respectively arranged on the same position of each section of mast 2 of the two masts 2 and is used for welding and dismantling the lifting lug for hoisting and the construction platform for cutting the previous section of mast 2.
Step 2: in combination with fig. 2 and 3, a full scaffold is erected in the scope of the triangular truss 1 and is used for cutting and dismantling the triangular truss 1, a roof is hung on a roof, the roof is hung and installed on the triangular truss 1 in an attached mode, a support 3 for an operation platform 4 is installed on the lower portion of a mast 2 and stands on the scaffold, the support 3 is used for supporting the high-altitude assembly of the operation platform 4, four supports 3 are arranged on each mast 2, the four supports 3 are divided into two groups and symmetrically arranged on two opposite sides of the mast 2, angle steel 31 is adopted between each group of supports 3 to connect, the stability of the supports 3 is guaranteed, each support 3 comprises a horizontal rod 32 and an inclined rod 33, and the horizontal rod 32 and the inclined rod 33 are fixedly welded with the mast 2.
Step 3: with reference to fig. 3-7, the operation platform 4 is assembled on the roof, and is divided into two halves for installation, one half is hoisted to the bracket 3, two chain blocks are adopted to temporarily fix the platform, then the other half of the operation platform 4 is hoisted, and after the assembly is completed, the two halves of the operation platform 4 are welded and fixed to complete the whole assembly. Specifically, encircle safety wire rope on mast 2 to connect with the shackle, be fixed in on the mast 2 cat ladder with the snap ring safety wire rope, install four tool to lock of fixed chain on safety wire rope, chain one end is connected with the tool to lock, and the other end is connected with operation platform 4, with operation platform 4 temporary fixation.
Each half of operation platform 4 comprises a bottom supporting frame 41, a protective guard 42 welded on the three sides of the bottom supporting frame 41 and a steel plate net paved on the bottom supporting frame 41, the two halves of operation platforms 4 are assembled in the middle to form a channel 43 for the mast 2 to pass through, four corners of the operation platforms 4 are fixedly arranged on the inner side of the channel 43, and universal wheels 44 are arranged on the four corners of the operation platforms 4 and can prevent the operation platforms 4 from being clamped with the mast 2 in the lifting process. Two slide ropes are hung at the bottom of each operation platform 4 respectively and used for controlling the moving direction and the shaking amplitude of the operation platform 4 in the lifting process; personnel are under the operating frame obliquely, and the operating platform 4 is finely adjusted in a range avoiding the operating platform 4.
Step 4: with reference to fig. 8-12, a 12 ton roof is used for hoisting the carrying pole beam 5 at four points, one side of the carrying pole beam 5 is close to the antenna of the mast 2, one end of the carrying pole beam 5 is inserted into the antenna of the mast 2, the other end of the carrying pole beam is assisted by a sliding rope, the carrying pole beam 5 is slowly swung, after being swung, the carrying pole beam 5 is stably and integrally translated to the other side, after the carrying pole beam 5 is in place, the hoisting point of the operating platform 4 is positioned at the center of the antenna of the mast 2, each end of the carrying pole beam 5 is connected with the operating platform 4 by four steel wire ropes, and after a temporary connection chain is removed, the carrying pole beam is ready to be lifted.
Specifically, the carrying pole beam 5 comprises two parallel main beams 51, inclined struts 52 and horizontal struts 53 which are connected with the two main beams 51, an outward opening U-shaped space 54 is formed between two ends of the main beams 51 and the horizontal struts 53 at the outermost side respectively, the U-shaped space 54 is used for sleeving the carrying pole beam 5 on the mast 2 antenna, and an anti-blocking assembly 55 is arranged at the inner side of the end part of the main beam 51 and used for preventing the carrying pole beam 5 from being blocked with the mast 2 antenna.
The girder 51 is made of 18-number I-steel, stiffening plates are welded between flange plates of the I-steel, weak-axis bending moment and torque generated by inclined lifting ropes are resisted, stability of the girder 51 is guaranteed, and connecting lug plates for connecting steel wire ropes are welded on the girder 51.
The diagonal braces 52 and the horizontal braces 53 are alternately arranged, and the adjacent diagonal braces 52 are connected to the same end of the horizontal braces 53, so that the stability of the whole shoulder pole beam 5 is ensured; specifically, the diagonal brace 52 and the horizontal brace 53 are made of 14A channel steel.
The anti-seize assembly 55 is arranged at the position where the end part of the shoulder pole beam 5 is easy to seize, the anti-seize assembly 55 comprises U-shaped sections respectively fixedly arranged on the upper side and the lower side of the main beam 51 and a circular arc section protruding from one side of the main beam 51, and two ends of the circular arc section are respectively connected with one end of the U-shaped section, which is away from the main beam 51; specifically, the arc section and the U-shaped section are integrally formed by bending round steel.
Further, a reinforcing diagonal rod 56 is fixedly arranged between the horizontal brace 53 positioned at the outermost side and the main beam 51, so that the stability of the beam body is improved.
Step 5: referring to fig. 13, the roof crane is slowly hooked, two operation platforms 4 are synchronously lifted along the antenna of the mast 2 by lifting the shoulder pole beam 5, four universal wheels 44 on the inner side of the operation platform 4 can prevent the operation platform 4 from being clamped with the mast 2 in the lifting process, and the moving direction of the operation platform 4 is controlled by two slide ropes at the bottom of the operation platform 4.
Step 6: lifting a first group of operation platforms 4 to the upper part of a mast 2, taking the first section of mast 2 as a working platform for welding lifting lugs used after the first section of mast 2 is dismounted, lifting the operation platforms 4 into place, enabling personnel to enter the operation platforms 4, hanging a safety belt at a ladder stand of the mast 2, sleeving a safety steel wire rope on the mast 2, connecting the safety steel wire rope by a shackle, fixedly connecting the safety steel wire rope with the ladder stand of the mast 2 by a clamping ring, installing four fixed chain-pouring locks on the safety steel wire rope, connecting one ends of the four chain-pouring locks, connecting the other ends of the four chain-pouring locks with lifting lugs of the bottom surface of the operation platform 4, temporarily stabilizing the operation platform 4, then utilizing a horizontal support 6 and an inclined support 7 to weld and fix a support frame 41 with the mast 2, and sealing the bottom surface of the operation platform 4 by a steel plate net. And (3) reversely executing the step (3), withdrawing the shoulder pole beam (5) from the mast (2), and repeating the steps (3-6) to install a second group of operation platforms (4), wherein the second group of operation platforms (4) are installed at the position 1.2m below the cutting point of the first section of mast (2) and are used for cutting the first section of mast (2) and welding lifting lugs for lifting and conveying the second section of mast (2). The third group of operating platforms 4 are located 1.2 meters below the cutting point of the second section of mast 2 and are used for cutting the second section of mast 2 and welding lifting lugs for lifting and conveying the third section of mast 2.
Step 7: and (3) sequentially cutting and dismantling the masts 2 from top to bottom, after each section of mast 2 is cut, lifting the operation platform 4 on the operation platform along with the masts 2 to a roof, and standing the third section of mast 2 on a scaffold for cutting.
Step 8: and the triangular truss 1 is removed in sections on the scaffold, lifted to the roof by the roof crane, and lifted to the ground for transportation after the sectional rod pieces lifted to the roof are secondarily decomposed into small components.
According to the method, the mast 2 and the triangular truss 1 are removed section by adopting a section removal scheme, a scaffold is erected in the range of the triangular truss 1 for section removal of the triangular truss 1, and an operation platform 4 is respectively arranged on each section of mast 2 and used for lifting lugs after welding and removing and a construction platform for cutting the previous section of mast 2, so that the operation is convenient, and the mast 2 and the triangular truss 1 are convenient to remove;
in addition, by arranging the adaptive shoulder pole beam 5, the positions of the lifting points and the lifting appliances of the operation platforms 4 are changed, the mast 2 is avoided, the two operation platforms 4 can be lifted at one time, and the operation is convenient and the lifting efficiency is high; moreover, by arranging the universal wheels 44 on the operation platform 4, the phenomenon that the antenna of the mast 2 is blocked in the lifting process of the operation platform 4 can be avoided; an anti-seize assembly 55 is provided inside the shoulder pole beam 5 to avoid seizing with the mast 2 when lifting the shoulder pole beam 5.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (8)
1. The mast dismantling method for lifting the high-altitude operation platform by adopting the shoulder pole beam is characterized by comprising the following steps of:
step 1: the method comprises the steps that a sectional dismantling scheme is adopted to dismantle masts (2) and triangular trusses (1), and an operation platform (4) is respectively installed on each section of masts (2) and used for welding lifting lugs after dismantling and a construction platform for cutting the previous section of masts (2);
step 2: setting up a full scaffold in the range of the triangular truss (1), and installing a bracket (3) for an operation platform (4) at the lower part of the mast (2);
step 3: the operation platform (4) is divided into two halves for installation, one half is temporarily fixed after being hoisted on the bracket (3), then the other half of the operation platform (4) is hoisted, and the two halves of the operation platform (4) are integrally assembled after the completion;
step 4: hoisting the carrying pole beam (5), enabling two ends of the carrying pole beam (5) to be respectively inserted into the two masts (2), connecting each end of the carrying pole beam (5) with the operation platform (4) through four steel wire ropes respectively, and releasing the temporary fixation of the operation platform (4) to prepare for lifting;
the shoulder pole beam (5) comprises two main beams (51) which are parallel to each other, inclined struts (52) and horizontal struts (53) which are connected with the two main beams (51), U-shaped spaces (54) with outwards openings are respectively formed at two ends of the main beams (51), anti-blocking assemblies (55) are arranged on the inner sides of the end parts of the main beams (51), the anti-blocking assemblies (55) comprise U-shaped sections which are respectively fixedly arranged on the upper side and the lower side of the main beams (51) and arc sections which are protruded away from one side of the main beams (51), and two ends of each arc section are respectively connected with one end of each U-shaped section which is away from the main beams (51);
step 5: by lifting the shoulder pole beam (5), synchronously lifting the two operation platforms (4) along the antenna of the mast (2);
step 6: lifting a first group of operation platforms (4) to the upper part of a mast (2), taking the first group of operation platforms (4) as a working platform for welding lifting lugs used after the first section of mast (2) is dismounted, lifting the operation platforms (4) into place, enabling personnel to enter the operation platforms (4), temporarily fixing the operation platforms (4), then welding and fixing the operation platforms (4) and the mast (2) by utilizing a horizontal support (6) and an inclined support (7), and sealing the bottom surface of the operation platforms (4) by utilizing a steel plate net; reversely executing the step 3, withdrawing the shoulder pole beam (5) from the mast (2), and repeating the steps 3-6 from top to bottom to sequentially mount the subsequent operation platform (4);
step 7: sequentially cutting and dismantling masts (2) from top to bottom, lifting an operation platform (4) on each section of masts (2) along with the masts (2) to a roof after each section of masts (2) are cut, and standing the last section of masts (2) on a scaffold for cutting;
step 8: and (3) sectional dismantling the triangular truss (1) on the scaffold, and lifting the triangular truss to the roof.
2. The mast removal method for lifting an aerial platform using a shoulder pole beam of claim 1, wherein: four brackets (3) are arranged on each mast (2), the four brackets (3) are divided into two groups, the four brackets are symmetrically arranged on two opposite sides of the masts (2), and each group of brackets (3) is connected by adopting angle steel (31); the bracket (3) comprises a horizontal rod piece (32) and an inclined rod piece (33) which are mutually connected at one end.
3. The mast removal method for lifting an aerial platform using a shoulder pole beam of claim 1, wherein: the specific step of temporary fixation in the step 3 and the step 6 is that the safety steel wire rope is surrounded on the mast (2) and connected by a shackle, the safety steel wire rope is fixed on the ladder stand of the mast (2) by a clamping ring, four locks for fixing a chain are arranged on the safety steel wire rope, one end of the chain is connected with the locks, the other end of the chain is connected with the operation platform (4), and the operation platform (4) is temporarily fixed.
4. The mast removal method for lifting an aerial platform using a shoulder pole beam of claim 1, wherein: the operation platform (4) comprises a bottom support frame (41), protective guards (42) welded on three sides of the support frame (41) and a steel plate net paved on the support frame (41), and a channel (43) for the mast (2) to pass through is formed in the middle of the two half operation platform (4) after the two half operation platform are assembled.
5. The mast removal method for lifting an aerial platform using a shoulder pole beam of claim 4, wherein: and universal wheels (44) are arranged in the channels (43) at four corners of the operation platform (4).
6. The mast removal method for lifting an aerial platform using a shoulder pole beam of claim 1, wherein: in step 5, when the operation platforms (4) are lifted, each operation platform (4) is respectively hung with two slide ropes, and personnel control the moving direction and the shaking amplitude of the operation platforms (4) through the slide ropes in the process of lifting the operation platforms (4).
7. The mast removal method for lifting an aerial platform using a shoulder pole beam of claim 1, wherein: in the step 4, when the carrying pole beam (5) is hoisted, one side of the carrying pole beam (5) is firstly close to the antenna of the mast (2), one end of the carrying pole beam is firstly inserted into the antenna of the mast (2), the other end of the carrying pole beam is assisted by a sliding rope, the carrying pole beam (5) is slowly swung, after the carrying pole beam is swung, the carrying pole beam (5) is stably assisted by the sliding rope, and the whole body of the carrying pole beam is horizontally moved to the other side, so that the carrying pole beam (5) is in place.
8. The mast removal method for lifting an aerial platform using a shoulder pole beam of claim 1, wherein: and after the sectional rod pieces lifted to the roof are secondarily decomposed into small components, the small components are lifted to the ground for transportation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210427494.6A CN114737816B (en) | 2022-04-22 | 2022-04-22 | Mast dismantling method for lifting high-altitude operation platform by adopting shoulder pole beam |
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| CN202210427494.6A CN114737816B (en) | 2022-04-22 | 2022-04-22 | Mast dismantling method for lifting high-altitude operation platform by adopting shoulder pole beam |
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| CN108678422A (en) * | 2018-05-29 | 2018-10-19 | 五冶集团上海有限公司 | The method for dismounting of steel stack |
| CN211470599U (en) * | 2019-11-20 | 2020-09-11 | 中国二十冶集团有限公司 | Auxiliary carrying pole beam for hoisting |
| CN111236608A (en) * | 2020-01-06 | 2020-06-05 | 三箭建设工程集团有限公司 | Integrated operating platform for curtain wall installation and construction method thereof |
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