CN114737816A - Mast dismantling method for lifting high-altitude operation platform by adopting carrying pole beam - Google Patents
Mast dismantling method for lifting high-altitude operation platform by adopting carrying pole beam Download PDFInfo
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- CN114737816A CN114737816A CN202210427494.6A CN202210427494A CN114737816A CN 114737816 A CN114737816 A CN 114737816A CN 202210427494 A CN202210427494 A CN 202210427494A CN 114737816 A CN114737816 A CN 114737816A
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- mast
- lifting
- operation platform
- pole beam
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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
Abstract
The invention discloses a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam, which adopts a sectional dismantling scheme to dismantle a mast and a triangular truss section by section, a scaffold is erected in the range of the triangular truss section for the sectional dismantling of the triangular truss, an operation platform is respectively arranged on each section of mast and is used for welding a lifting lug for lifting after dismantling and a construction platform for cutting the previous section of mast, the positions of a lifting point and a lifting tool of the operation platform are changed by arranging the adaptive carrying pole beam, the mast is avoided, the two operation platforms can be lifted at one time, the operation is convenient, the lifting efficiency is high, and the mast dismantling efficiency is improved.
Description
Technical Field
The invention relates to the technical field of mast demolition, in particular to a mast demolition method for lifting a high-altitude operation platform by adopting a carrying pole beam.
Background
A decorative mast is arranged on one side of the northeast corner of a roof of a super high-rise building which is built for many years, and an owner decides to dismantle the roof mast for some reasons. Referring to fig. 1, the mast is composed of two symmetrical triangular trusses 1 and independent mast 2 antennas, the total height is about 51.2m, the length of the upper independent mast antenna is about 21.5m, and the length of the lower triangular truss is about 29.7 m. The distance between the two triangular trusses is 9.3m, and two middle tie rods are arranged between the triangular trusses. All the rods are connected by full welding, the main specifications of the steel pipes are D1300 multiplied by 20, D1100 multiplied by 20 and D900 multiplied by 18, and the total weight of the mast is about 230 tons.
The mast is generally removed by section cutting, when the mast is removed, an operation platform is required to be installed on the mast for cutting by workers, the operation platform is lifted by a tower crane in the conventional way, but when a single operation platform is lifted, a lifting point and a lifting appliance of the operation platform just conflict with the mast, so that the operation platform cannot be lifted or a hoist is used for lifting the operation platform through a chain block, but the engineering mast is independent, large in height, smooth in surface, free of the position where the hoist can be hung, and inconvenient to operate.
Disclosure of Invention
The invention provides a mast dismantling method for lifting an overhead operation platform by adopting a carrying pole beam, which changes the positions of a lifting point and a lifting appliance of the operation platform, avoids masts, can lift two operation platforms at one time, and has convenient operation and high lifting efficiency.
The technical problem to be solved is that: the conventional method for dismantling the mast is to lift the operating platform by using a tower crane, but when a single operating platform is lifted, a lifting point and a lifting appliance of the operating platform just conflict with the mast, so that the operating platform cannot be lifted.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam, which comprises the following steps of:
step 1: dismantling the masts and the triangular truss by adopting a sectional dismantling scheme, wherein each section of mast is respectively provided with an operation platform for welding a lifting lug for hoisting after dismantling and a construction platform for cutting the previous section of mast;
step 2: erecting a full framing scaffold within the range of the triangular truss, and installing a support for an operation platform at the lower part of the mast;
and step 3: the operation platform is divided into two halves to be installed, one half is hoisted to the support and then temporarily fixed, then the other half of the operation platform is hoisted, and the two halves of the operation platform are integrally assembled after the operation platform is completed;
and 4, step 4: hoisting the carrying pole beam, respectively inserting two masts into two ends of the carrying pole beam, respectively connecting each end of the carrying pole beam with the operating platform through four steel wire ropes, releasing the temporary fixation of the operating platform and preparing for lifting;
and 5: synchronously lifting the two operating platforms along the mast antenna by lifting the carrying pole beam;
step 6: lifting the first group of operating platforms to the upper part of the mast to serve as a working platform for welding lifting lugs used for lifting after the first section of mast is dismantled, lifting the operating platforms in place, enabling personnel to enter the operating platforms, temporarily fixing the operating platforms, then welding and fixing the operating platforms and the mast by using horizontal supports and inclined supports, and sealing the bottom surface of the operating platforms by using a steel plate mesh; reversely executing the step 3, withdrawing the shoulder pole beam from the mast, and repeating the steps 3-6 to sequentially mount the subsequent operating platforms from top to bottom;
and 7: the masts are cut and dismantled in sections from top to bottom in sequence, after each section of mast is cut, an operating platform on each section of mast is hoisted to a roof along with the mast, and the last section of mast stands on a scaffold for cutting;
and 8: and dismantling the triangular truss on the scaffold in sections, and hoisting the triangular truss to the roof.
The invention relates to a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam, and further, four brackets are arranged on each mast, the four brackets are divided into two groups and symmetrically arranged on two opposite sides of the mast, and the brackets of each group are connected by adopting angle steel; the bracket 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 relates to a mast dismantling method for lifting an overhead operation platform by adopting a carrying pole beam, and further, the temporary fixation in the step 3 and the step 6 is concrete, wherein a safe steel wire rope is encircled on the mast and is connected by a shackle, the safe steel wire rope is fixed on a mast ladder stand by a snap ring, four locksets for fixing a chain block are arranged on the safe steel wire rope, one end of the chain block is connected with the lockset, the other end of the chain block is connected with the operation platform, and the operation platform is temporarily fixed.
The invention relates to a mast dismantling method for lifting an overhead operation platform by adopting a carrying pole beam.
The invention relates to a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam.
The invention relates to a mast dismantling method for lifting an overhead operation platform by adopting a carrying pole beam, and further, in the step 5, when the operation platform is lifted, two sliding ropes are hung on each operation platform, and personnel control the moving direction and the shaking amplitude of the operation platform through the sliding ropes in the process of lifting the operation platform.
The invention relates to a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam, and further, in the step 4, when the carrying pole beam is hoisted, one side of the carrying pole beam is firstly close to a mast antenna, one end of the carrying pole beam is firstly inserted into the mast antenna, the other end of the carrying pole beam is assisted by a sliding rope and slowly straightened, after the mast antenna is straightened, the sliding rope is used for assisting the carrying pole beam to be stable, the whole carrying pole beam is translated to the other side, and the carrying pole beam is in place.
The invention relates to a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam, which is characterized in that the carrying pole beam comprises two mutually parallel main beams, an inclined strut and a horizontal strut, wherein the inclined strut and the horizontal strut are connected with the two main beams, U-shaped spaces with outward openings are respectively formed at two ends of the main beams, an anti-clamping component is arranged at the inner side of the end part of each main beam, and the anti-clamping component comprises an arc section which protrudes from one side of the main beam.
The invention relates to a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the method, the masts and the triangular trusses are dismantled section by adopting a sectional dismantling scheme, a scaffold is erected in the range of the triangular trusses for sectional dismantling of the triangular trusses, an operation platform is respectively arranged on each section of mast and is used for welding a lifting lug for hoisting after dismantling and a construction platform for cutting the previous section of mast, so that the operation is convenient, and the dismantling of the masts and the triangular trusses is convenient;
2. by arranging the matched shoulder pole beam, the positions of the lifting points and the lifting appliance of the operating platforms are changed, the masts are avoided, the two operating 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 operating platform, so that the operating platform can be prevented from being clamped with the mast antenna in the lifting process;
4. the anti-jamming component is arranged on the inner side of the shoulder pole beam, so that the shoulder pole beam is prevented from being jammed with the mast when being lifted.
The invention will be further described with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of the background art of the present invention;
FIG. 2 is a top view of the bracket mounting of the present invention;
FIG. 3 is a side view of the bracket mounting of the present invention;
FIG. 4 is a perspective view of the operation platform of the present invention;
FIG. 5 is a top view of the work platform of the present invention;
FIG. 6 is a cross-sectional view of the work platform of the present invention;
FIG. 7 is a schematic view of the structure of the universal wheel assembly of the present invention;
fig. 8 is a schematic plan view of the inventive carrying pole beam;
FIG. 9 is a schematic view of a mating structure of the main beam and the anti-seize assembly according to the present invention;
fig. 10 is a schematic view of the structure of the present invention with one end of the carrying pole beam inserted into the mast;
FIG. 11 is a schematic view of the adjusting structure of the carrying pole beam of the present invention;
fig. 12 is a schematic view of the horizontal moving position structure of the carrying pole beam of the present invention;
fig. 13 is a schematic structural view of the shoulder pole beam lifting operation platform of the present invention.
Reference numerals:
1. a triangular truss; 2. a mast; 3. a support; 31. angle steel; 32. a horizontal bar member; 33. tilting the rod member; 4. an operating platform; 41. a support frame; 42. protecting the fence; 43. a channel; 44. a universal wheel; 5. a shoulder pole beam; 51. a main beam; 52. bracing; 53. horizontally supporting; 54. a U-shaped space; 55. an anti-seize assembly; 56. a reinforcing diagonal rod; 6. horizontally supporting; 7. and (5) obliquely supporting.
Detailed Description
The invention relates to a mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam, which comprises the following steps of:
step 1: the masts 2 and the triangular truss 1 are dismantled by adopting a sectional dismantling scheme, and an operation platform 4 for welding and dismantling the lifting lugs and a construction platform for cutting the upper section of mast 2 are respectively arranged at the same position of each section of mast 2 of the two masts 2.
Step 2: with reference to fig. 2 and 3, a full framing scaffold is erected within the range of the triangular truss 1, the full framing scaffold is used for cutting and dismantling the triangular truss 1, a roof crane is installed on a roof, the roof crane is installed on the triangular truss 1 in an attached mode, a support 3 for an operating platform 4 is installed on the lower portion of a mast 2 and stands on the framing scaffold and is used for supporting the operating platform 4 to be assembled at high altitude, four supports 3 are arranged on each mast 2 and are divided into two groups, the supports are symmetrically arranged on two opposite sides of the mast 2, angle steel 31 is connected between every two groups of supports 3, the stability of the supports 3 is guaranteed, each support 3 comprises a horizontal rod 32 and an inclined rod 33, one end of each horizontal rod 32 is connected with one end of each inclined rod 33, and the horizontal rods 32 and the inclined rods 33 are welded and fixed with the mast 2.
And 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 support 3, two chain blocks are used for temporarily fixing the platform, then the other half of the operation platform 4 is hoisted, and after the operation platform is assembled, the two half of the operation platform 4 are welded and fixed to complete the whole assembly. Specifically, embrace safe wire rope on mast 2 to connect with the shackle, be fixed in safe wire rope on mast 2 cat ladder with the snap ring, install the tool to lock of four fixed chain blocks on safe wire rope, chain block one end is connected with the tool to lock, and the other end is connected with operation platform 4, fixes operation platform 4 temporarily.
Each half of the operation platform 4 comprises a bottom support frame 41, guard rails 42 welded on three sides of the bottom support frame 41, and a steel plate mesh laid on the bottom support frame 41, the two half of the operation platform 4 are assembled in the middle to form a channel 43 for the mast 2 to pass through, universal wheels 44 are fixedly mounted at four corners of the operation platform 4 at the inner side of the channel 43, and the universal wheels 44 can prevent the operation platform 4 from being clamped with the mast 2 in the lifting process. Two sliding ropes are hung at the bottom of each operating platform 4 respectively and used for controlling the moving direction and the shaking amplitude of the operating platform 4 in the lifting process; the personnel avoid the range of the operation platform 4 to finely adjust the operation platform 4 at the oblique lower part of the operation frame.
And 4, step 4: with reference to fig. 8-12, a 12-ton roof crane four-point hoisting carrying pole beam 5 is adopted, one side of the carrying pole beam 5 is close to the mast 2 antenna, one end of the carrying pole beam 5 is inserted into the mast 2 antenna, the other end of the carrying pole beam is assisted by a sliding rope, the carrying pole beam 5 is slowly straightened, the sliding rope is used for assisting the stability of the carrying pole beam 5 after the straightening, the whole carrying pole beam is horizontally moved towards the other side, after the carrying pole beam 5 is in place, a hoisting point of an operating platform 4 is located at the center of the mast 2 antenna, each end of the carrying pole beam 5 is connected with the operating platform 4 through four steel wire ropes, and the carrying pole beam is ready to be hoisted after a temporary connecting chain is removed.
Specifically, the carrying pole beam 5 comprises two mutually parallel main beams 51, an inclined strut 52 and a horizontal strut 53 which are connected with the two main beams 51, a U-shaped space 54 with an outward opening is formed between each of two ends of the main beam 51 and the outermost horizontal strut 53, the U-shaped space 54 is used for sleeving the carrying pole beam 5 on the mast 2 antenna, and an anti-clamping assembly 55 is installed on the inner side of the end part of the main beam 51 and used for preventing the carrying pole beam 5 from being clamped with the mast 2 antenna.
The main beam 51 is made of 18- # I-steel, stiffening plates are welded between flange plates of the I-steel to resist weak axis bending moment and torque generated by inclined lifting ropes, the stability of the main beam 51 is guaranteed, and connecting lug plates used for connecting steel wire ropes are welded on the main beam 51.
The inclined struts 52 and the horizontal struts 53 are alternately arranged, and the adjacent inclined struts 52 are connected to the same end of the horizontal strut 53, so that the stability of the whole shoulder pole beam 5 is ensured; specifically, the inclined strut 52 and the horizontal strut 53 are made of 14A channel steel.
The anti-blocking component 55 is installed at a position where the end part of the carrying pole beam 5 is easy to block, the anti-blocking component 55 comprises a U-shaped section and an arc section, the U-shaped section is fixedly arranged on the upper side and the lower side of the main beam 51 respectively, the arc section protrudes away from one side of the main beam 51, and two ends of the arc section are connected with one end, away from the main beam 51, of the U-shaped section respectively; specifically, the arc section and the U-shaped section are integrally formed by bending round steel.
Furthermore, a reinforcing diagonal rod 56 is fixedly arranged between the horizontal support 53 positioned at the outermost side and the main beam 51, so that the stability of the beam body is improved.
And 5: referring to fig. 13, the roof crane is slowly hooked, the two operation platforms 4 are synchronously lifted along the mast 2 antenna by lifting the carrying pole beam 5, the four universal wheels 44 on the inner sides of the operation platforms 4 can prevent the operation platforms 4 from being clamped with the mast 2 in the lifting process, and the moving direction of the operation platforms 4 is controlled by two sliding ropes at the bottoms of the operation platforms 4.
And 6: lifting a first group of operation platforms 4 to the upper part of a mast 2 to serve as a working platform for welding lifting lugs used for lifting after a first section of mast 2 is dismantled, lifting the operation platforms 4 in place, enabling personnel to enter the operation platforms 4, hanging safety belts at the crawling ladder of the mast 2, sleeving a safety steel wire rope on the mast 2, connecting the safety steel wire rope by using a shackle, fixedly connecting the safety steel wire rope with the crawling ladder of the mast 2 by using a snap ring, installing four lockers for fixing chain falls on the safety steel wire rope, connecting one ends of the four chain falls with the lockset, connecting the other ends of the four chain falls with the lifting lugs on the bottom surface of the operation platform 4, temporarily stabilizing the operation platforms 4, welding and fixing a support frame 41 with the mast 2 by using a horizontal support 6 and an inclined support 7, and sealing the bottom surface of the operation platforms 4 by using a steel plate net. And (3) reversely executing the step (3), withdrawing the shoulder pole beam 5 from the mast 2, repeating the steps (3-6) to mount a second group of operating platforms and a third group of operating platforms 4, wherein the second group of operating platforms 4 are mounted 1.2m below the cutting point of the first section of mast 2 and used for cutting the first section of mast 2, and welding lifting lugs used for lifting the second section of mast 2. And the third group of operating platforms 4 are positioned 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 used for lifting the third section of mast 2.
And 7: the masts 2 are sequentially cut and dismantled from top to bottom, after each section of mast 2 is cut, the operating platform 4 on each section of mast is lifted to a roof along with the mast 2, and the third section of mast 2 stands on a scaffold for cutting.
And step 8: the triangular truss 1 is dismantled in sections on the scaffold, and is hoisted to the roof by a roof crane, and after the section rod piece hoisted to the roof is decomposed into small components for the second time, the section rod piece is hoisted to the ground to be transported away.
According to the method, the masts 2 and the triangular trusses 1 are dismantled section by adopting a sectional dismantling scheme, a scaffold is erected in the range of the triangular trusses 1 for sectional dismantling of the triangular trusses 1, an operation platform 4 is arranged on each section of mast 2 respectively and used for welding a lifting lug for hoisting after dismantling and a construction platform for cutting the upper section of mast 2, and the operation is convenient and the dismantling of the masts 2 and the triangular trusses 1 is convenient;
in addition, the positions of the lifting points and the lifting appliance of the operating platforms 4 are changed by arranging the matched carrying pole beams 5, the masts 2 are avoided, the two operating platforms 4 can be lifted at one time, the operation is convenient, and the lifting efficiency is high; moreover, the universal wheels 44 are arranged on the operating platform 4, so that the operating platform 4 can be prevented from being clamped with the mast 2 antenna in the lifting process; an anti-seizing unit 55 is provided on the inner side of the shoulder pole beam 5 to prevent the shoulder pole beam 5 from being seized with the mast 2 when it is lifted.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (9)
1. A mast dismantling method for lifting a high-altitude operation platform by adopting a carrying pole beam is characterized by comprising the following steps:
step 1: dismantling the masts (2) and the triangular truss (1) by adopting a sectional dismantling scheme, wherein each section of mast (2) is respectively provided with an operation platform (4) for welding and dismantling lifting lugs and a construction platform for cutting the upper section of mast (2);
step 2: a full scaffold is erected in the range of the triangular truss (1), and a support (3) for an operation platform (4) is arranged at the lower part of the mast (2);
and step 3: the operation platform (4) is divided into two parts to be installed, one part is hoisted to the support (3) and then temporarily fixed, then the other part of the operation platform (4) is hoisted, and the two parts of the operation platform (4) are integrally assembled after the operation platform is completed;
and 4, step 4: hoisting a carrying pole beam (5), respectively inserting two masts (2) into two ends of the carrying pole beam (5), respectively connecting each end of the carrying pole beam (5) with an operation platform (4) through four steel wire ropes, releasing the temporary fixation of the operation platform (4) and preparing for lifting;
and 5: synchronously lifting the two operating platforms (4) along the mast (2) antenna by lifting the carrying pole beam (5);
and 6: lifting a first group of operating platforms (4) to the upper part of a mast (2) to serve as a working platform for welding lifting lugs used for lifting after the first section of mast (2) is dismantled, lifting the operating platforms (4) to be in place, enabling personnel to enter the operating platforms (4), temporarily fixing the operating platforms (4), then welding and fixing the operating platforms (4) and the mast (2) by using horizontal supports (6) and inclined supports (7), and sealing the bottom surface of the operating platforms (4) by using 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 to sequentially mount the subsequent operation platform (4) from top to bottom;
and 7: the masts (2) are cut and dismantled in sections from top to bottom in sequence, after each section of mast (2) is cut, the operating platform (4) on each section of mast is lifted to a roof along with the mast (2), and the last section of mast (2) stands on a scaffold for cutting;
and step 8: the triangular truss (1) is dismantled in sections on the scaffold and lifted to the roof.
2. The method for removing the mast for lifting the high-altitude operation platform by using the carrying pole beam as claimed in claim 1, wherein: four brackets (3) are arranged on each mast (2), the four brackets (3) are divided into two groups and symmetrically arranged on two opposite sides of the mast (2), and the brackets (3) of each group are connected by angle steel (31); the bracket (3) comprises a horizontal rod piece (32) and an inclined rod piece (33) which are connected with each other at one end.
3. The method for removing the mast for lifting the high-altitude operation platform by using the carrying pole beam as claimed in claim 1, wherein: the temporary fixing in the steps 3 and 6 is concrete, a safety steel wire rope is encircled on the mast (2) and is connected through shackles, the safety steel wire rope is fixed on the mast (2) ladder through the clasps, four locksets for fixing the chain blocks are installed on the safety steel wire rope, one end of each chain block is connected with the corresponding lockset, the other end of each chain block is connected with the operating platform (4), and the operating platform (4) is temporarily fixed.
4. The method for removing the mast for lifting the high-altitude operation platform by using the carrying pole beam as claimed in claim 1, wherein: the operation platform (4) comprises a bottom support frame (41), guard rails (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 platforms (4) after being assembled.
5. The method for removing the mast of the carrying pole beam for lifting the high-altitude operation platform according to claim 4, wherein: four corners of the operating platform (4) are positioned in the channel (43) and are internally provided with universal wheels (44).
6. The method for removing the mast for lifting the high-altitude operation platform by using the carrying pole beam as claimed in claim 1, wherein: in the step 5, when the operation platforms (4) are lifted, two sliding ropes are hung on each operation platform (4), and the moving direction and the shaking amplitude of the operation platforms (4) are controlled by personnel through the sliding ropes in the process of lifting the operation platforms (4).
7. The method for removing the mast for lifting the high-altitude operation platform by using the carrying pole beam as claimed in claim 1, wherein: in the step 4, when the shoulder pole beam (5) is hoisted, one side of the shoulder pole beam (5) is close to the mast (2) antenna, one end of the shoulder pole beam is inserted into the mast (2) antenna, the other end of the shoulder pole beam is assisted by a sliding rope and is slowly straightened, after the straightening, the sliding rope is used for assisting the shoulder pole beam (5) to be stable, the whole body is translated to the other side, and the shoulder pole beam (5) is in place.
8. The mast dismantling method for lifting the aerial work platform by using the carrying pole beam as claimed in claim 1, wherein: carrying pole roof beam (5) include twice girder (51) that are parallel to each other, bracing (52) and horizontal brace (53) of connecting twice girder (51), the both ends of girder (51) are formed with opening U-shaped space (54) outwards respectively, anti-sticking subassembly (55) are installed to girder (51) tip inboard, anti-sticking subassembly (55) are including deviating from girder (51) one side convex circular arc section.
9. The method for removing the mast for lifting the high-altitude operation platform by using the carrying pole beam as claimed in claim 1, wherein: after the sectional rod pieces hoisted to the roof are decomposed into small components for the second time, the sectional rod pieces are hoisted to the ground to be transported away.
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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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