CN109095362B - Large arm structure of conical tower crown external hanging tower crane in platform-free environment and dismantling method thereof - Google Patents
Large arm structure of conical tower crown external hanging tower crane in platform-free environment and dismantling method thereof Download PDFInfo
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- CN109095362B CN109095362B CN201811039694.4A CN201811039694A CN109095362B CN 109095362 B CN109095362 B CN 109095362B CN 201811039694 A CN201811039694 A CN 201811039694A CN 109095362 B CN109095362 B CN 109095362B
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- tower crane
- large arm
- platform
- wire rope
- steel wire
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
Abstract
The invention discloses a conical tower crown external hanging tower crane big arm structure in a non-platform environment, which comprises a top overhanging hoisting platform, a middle supporting platform, a temporary revolving platform, a bottom overhanging steel platform, a tower crane big arm, a tower crane hoisting steel wire rope, a tower crane amplitude-changing steel wire rope and a bottom pull steel wire rope, wherein the top overhanging hoisting platform, the middle supporting platform, the temporary revolving platform, the bottom overhanging steel platform, the tower crane big arm, the tower crane hoisting steel wire rope, the tower crane amplitude-changing steel wire rope and the bottom pull steel wire rope are sequentially arranged from top to bottom, the lower end of the tower crane big arm is hinged with a supporting seat on the temporary revolving platform, one end of the tower crane hoisting steel wire rope is connected with the inner side of the upper end of the tower crane big arm. The invention also discloses a method for dismantling the large arm structure of the conical tower crown external hanging tower crane in a platform-free environment. The invention solves the problems of hoisting and hoisting in the self-disassembling process of the tower crane large arm drop joint, the collision between the tower crane large arm and the building curtain wall and the stacking of demolition equipment.
Description
Technical Field
The invention belongs to the technical field of buildings, and particularly relates to a conical tower crown external hanging tower crane large arm structure in a platform-free environment and a dismantling method thereof.
Background
At present, a tower crane large arm is widely applied to construction of various large super high-rise buildings, a construction process of disassembling a large tower from a small tower is often adopted in the process of disassembling the tower crane large arm, and the tower crane large arm is usually arranged within a side line of a building. Along with the more and more novel of super high-rise building molding, facade molding pursues curved surface lines, visual effects such as toper even lead to the tower crane jib to hang in the building outside, when adopting the small tower to tear down big tower technology and demolish the last tower crane jib in toper tower crown position, last small tower crane does not have other hoisting equipment to be supplementary, toper tower crown part can't set up the jib and demolish the platform, and operations such as tower crown steel construction, curtain, decoration fitment have all been accomplished this moment, propose rigorous finished product protection requirement to demolising the tower crane. A new method needs to be explored, so that the large arm of the overhanging tower crane outside the conical tower crown can be smoothly dismounted along the peripheral outline of the building under the conditions of no platform, no auxiliary tower crane and other hoisting equipment, and meanwhile, the self counterweight and other parts of the large arm of the tower crane can be smoothly dismounted under the conditions.
Disclosure of Invention
The invention provides a tower crane structure which is simple to manufacture, economical and applicable and a dismantling method thereof. The tower crane structure and the dismantling method thereof solve the hoisting problem in the self-degradation process of the large arm of the tower crane, the collision problem of the large arm of the tower crane and a building curtain wall, and the stacking problem of dismantling equipment.
The invention is realized by the following technical scheme:
toper tower crown joins externally big arm structure of tower crane under no platform environment, include from last to the top that sets gradually down and encorbelment hoist and mount platform, middle part supporting platform, the platform has enough to meet the need temporarily, the steel platform is encorbelmented to the bottom, and the big arm of tower crane, tower crane hoisting steel wire rope, tower crane luffing steel wire rope and bottom drawknot wire rope, tower crane big arm bottom is articulated with the supporting seat on the platform has enough to meet the need temporarily, tower crane hoisting steel wire rope one end is connected with the inboard of tower crane big arm upper end, the other end is rich and is worn top and encorbelment hoist and mount platform and be connected, tower crane luffing steel wire rope one end is connected with the outside of tower crane big arm upper end, the other end.
Further, the top overhanging hoisting platform comprises a fixed pulley, a top drawknot steel wire rope and a top overhanging rod, the fixed pulley is arranged in the top overhanging rod, the top overhanging rod is fixedly connected with the conical tower crown through the top drawknot steel wire rope, and the tower crane hoisting steel wire rope is wound through the fixed pulley and is connected with the winch.
Furthermore, the top cantilever rod can be formed by welding channel steel, I-steel or other combined structures, a solid steel bar and a galvanized steel pipe.
Further, middle part supporting platform includes bracing piece and middle part drawknot wire rope, and the bracing piece passes through middle part drawknot wire rope and toper tower crown fixed connection, the big arm of tower crane slides in the bracing piece.
Further, the support rod is H-shaped.
The method for dismantling the large arm structure of the conical tower crown external hanging tower crane in the platform-free environment comprises the following steps when the top of the large arm of the tower crane slides on the upper part of a middle supporting platform:
firstly, a large arm of a tower crane is fixedly tied with a hoisting steel wire rope of the tower crane through a fixed pulley of a top overhanging hoisting platform, the large arm of the tower crane is directly fixedly tied with a variable amplitude steel wire rope of the tower crane, and the bottom of the large arm of the tower crane is fixedly tied with a tie steel wire rope at the bottom;
step two, removing a connecting pin shaft of the bottom end of the large arm of the tower crane and the supporting seat, adjusting a bottom drawknot steel wire rope, and slowly lowering the bottom end part of the large arm of the tower crane to lean against a supporting rod of a middle supporting platform;
and step three, adjusting a crane hoisting steel wire rope to enable the large arm of the tower crane to slowly fall onto the temporary transfer platform, after temporary fixation, moving the bottom drawknot steel wire rope 1 to the bottom of the large arm of the upper standard joint, detaching a connecting pin shaft between the large arm of the bottom standard joint and the large arm of the upper standard joint of the large arm of the tower crane, hoisting the large arm of the tower crane to enable the large arm of the bottom standard joint of the large arm of the tower crane to be separated from the large arm of the upper standard joint, and transferring the large arm of the bottom standard joint to the bottom cantilever steel platform through a tower crane winch.
The method for dismantling the large arm structure of the conical tower crown external hanging tower crane in the non-platform environment comprises the following steps that when the large arm of the tower crane slowly slides to the middle supporting platform, the large arm of the tower crane is dismantled by about a half, and when the large arm of the tower crane is separated from the middle supporting platform:
step four, contracting the tower crane amplitude-variable steel wire rope, wherein the large arm of the tower crane is far away from the middle supporting platform;
fifthly, lowering the crane hoisting steel wire rope, and slowly approaching the large arm of the tower crane to the conical tower crown in the falling process;
step six, repeating the step four, and step five, adjusting the posture of a large arm of the tower crane through a tower crane amplitude-changing steel wire rope and a tower crane hoisting steel wire rope, so that the large arm of the tower crane keeps a safe distance from a curtain wall unit body of a conical tower crown in the falling process and does not collide with the curtain wall unit body;
and seventhly, completely removing the large arm of the tower crane.
The invention has the beneficial effects that: the invention discloses a tower crane dismantling structure which is simple to manufacture, economical and practical. The tower crane dismantling structure solves the hoisting and hoisting problem in the self-disassembling process of the tower crane large arm drop joint, the collision problem of the tower crane large arm and a building curtain wall, and the stacking problem of dismantling equipment.
Drawings
FIG. 1: the invention is a whole elevation construction drawing;
FIG. 2: the invention is a general plane construction diagram;
FIG. 3: a structural drawing of the top overhanging hoisting platform, wherein A is a front view and B is a top view;
FIG. 4: a middle supporting platform construction drawing, wherein C is a front view, and D is a top view;
FIG. 5: under the working condition 1, when the top of the large arm of the tower crane slides on the upper part of the supporting rod;
FIG. 6: under the working condition 2, when the large arm of the tower crane slides and is separated from the middle supporting rod;
wherein: 1-top overhanging hoisting platform, 2-middle supporting platform, 3-temporary turnover platform, 4-bottom overhanging steel platform, 5-tower crane jib, 6-fixed pulley, 7-top drawknot steel wire rope, 8-tower crane hoisting steel wire rope, 9-tower crane amplitude-changing steel wire rope, 10-bottom drawknot steel wire rope, 11-support rod, 12-middle drawknot steel wire rope.
Detailed Description
As shown in figures 1 to 6, the external hanging tower crane big arm structure of the conical tower crown under the environment without the platform comprises a top overhanging hoisting platform 1, a middle supporting platform 2, a temporary revolving platform 3, a bottom overhanging steel platform 4, a tower crane big arm 5, a tower crane hoisting steel wire rope 8, a tower crane amplitude-changing steel wire rope 9 and a bottom drawknot steel wire rope 10 which are sequentially arranged from top to bottom, wherein the tower crane big arm 5 consists of a plurality of standard node big arms which are connected through a pin shaft, the bottom end of the tower crane big arm 5 is hinged with a supporting seat on the temporary revolving platform 3, one end of the tower crane hoisting steel wire rope 8 is connected with the inner side of the upper end of the tower crane big arm 5, the other end of the tower crane hoisting steel wire rope penetrates the top overhanging hoisting platform 1 to be connected with a winch (big winch), one end of the amplitude-changing steel wire rope 9 is connected with the outer side of the upper end of the tower crane big arm 5, the other, the other end is connected with the electric hoist.
In this embodiment, top suspension platform 1 includes fixed pulley 6, top drawknot wire rope 7 and top cantilever beam, top cantilever beam can adopt channel-section steel or I-steel or other integrated configuration, and solid steel bar, galvanized steel pipe welding forms, fixed pulley 6 sets up in top cantilever beam, top cantilever beam passes through top drawknot wire rope 7 and toper tower crown fixed connection, tower crane hoisting wire rope 8 is connected with hoist engine (big hoist engine) around wearing fixed pulley 6, tower crane hoisting wire rope 8 is connected with hoist engine (big hoist engine) through the 6 direction of fixed pulley 6 on the top cantilever beam, the effect of big arm 5 is transferred to the hoist and mount tower crane plays.
In this embodiment, middle part supporting platform 2 includes bracing piece 11 and middle part drawknot wire rope 12, and bracing piece 11 slides in bracing piece 11 through middle part drawknot wire rope 12 and toper tower hat fixed connection, tower crane jib 5. The support rod 11 is H-shaped. The support rod 11 plays a role in adjusting the direction and the angle of the lowering steel wire rope, and the large arm is prevented from being lowered to collide the conical tower crown structure and the curtain wall part.
The method for dismantling the large arm structure of the conical tower crown external hanging tower crane in the platform-free environment comprises the following working conditions of 1: when the top of the tower crane large arm 5 slides on the upper part of the middle supporting platform 2;
firstly, a tower crane large arm 5 is fixedly tied with a tower crane hoisting steel wire rope 8 through a fixed pulley 6 of a top overhanging hoisting platform 1, the tower crane large arm 5 is directly fixedly tied with a tower crane variable amplitude steel wire rope 9, and the bottom of the tower crane large arm 5 is fixedly tied with a bottom tied steel wire rope 10;
step two, dismantling a connecting pin shaft between the bottom end of the large tower crane arm 5 and the supporting seat, adjusting a bottom drawknot steel wire rope 10 through an electric hoist, slowly lowering the bottom end of the large tower crane arm 5 to lean against a supporting rod 11 of the middle supporting platform 2, sliding the large tower crane arm 5 along the supporting rod 11 at this stage, and enabling the amplitude-variable steel wire rope 9 to hardly work;
step three, adjusting a tower crane hoisting steel wire rope 8 to enable a tower crane large arm 5 to slowly fall onto a temporary transfer platform 3 (the temporary transfer platform 3 can be formed by simply welding I-shaped steel, channel steel, figured steel plates and other materials, the temporary transfer platform 3 plays a role in temporarily removing, stacking and operating the tower crane large arm 5 by constructors), after the tower crane large arm 5 is temporarily fixed, moving a bottom drawknot steel wire rope 1 to the bottom of an upper standard joint large arm, removing a connecting pin shaft between the bottom standard joint large arm and the upper standard joint large arm of the tower crane large arm 5, hoisting the tower crane large arm 5 to enable the bottom standard joint large arm and the upper standard joint large arm of the tower crane large arm 5 to be separated, transferring the bottom standard joint large arm onto a bottom overhanging steel platform 4 through a tower crane, transferring and transferring the tower crane large arm component of the upper temporary transfer platform 3 by the bottom overhanging steel platform 4, and transported to the interior of the structural floor by this platform. The bottom overhanging steel platform can be made of I-shaped steel, steel pipes, patterned steel plates and other materials through welding.
The method for dismantling the large arm 5 structure of the conical tower crown external hanging tower crane in the platform-free environment comprises the following steps of: when the large tower crane arm 5 slowly slides to the middle supporting platform 2, the large tower crane arm 5 is removed by nearly a half, and when the large tower crane arm 5 is separated from the middle supporting platform 2;
step four, contracting the tower crane amplitude-variable steel wire rope 9, wherein the tower crane large arm 5 is far away from the middle supporting platform 2;
fifthly, lowering a tower crane hoisting steel wire rope 8, and slowly approaching the large arm 5 of the tower crane to the conical tower crown in the falling process;
step six, repeating the step four, and step five, adjusting the posture of the large tower crane arm 5 through a tower crane amplitude-changing steel wire rope 9 and a tower crane hoisting steel wire rope 8, so that the large tower crane arm 5 keeps a safe distance from the curtain wall unit body of the conical tower crown in the falling process and does not collide with the curtain wall unit body;
and seventhly, completely removing the large arm of the tower crane.
The invention can effectively avoid the problem that the large arm of the tower crane cannot be smoothly transferred due to the fact that the outer contour of a building is scratched in the self-releasing falling process of the large arm, and simultaneously avoids the damage of the building caused in the self-releasing falling process and the generation of high-altitude falling objects in the transferring process. The smooth lowering and self-releasing of the large arm of the tower crane are ensured, and meanwhile, the great safety guarantee is provided for the site construction.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the present disclosure should not be construed as limiting the invention.
Claims (6)
1. Big arm structure of external tower crane of toper tower hat under no platform environment, its characterized in that: the tower crane jib hoisting device comprises a top overhanging hoisting platform, a middle supporting platform, a temporary turnover platform, a bottom overhanging steel platform, a tower crane jib, a tower crane hoisting steel wire rope, a tower crane amplitude-changing steel wire rope and a bottom drawknot steel wire rope which are sequentially arranged from top to bottom, wherein the bottom end of the tower crane jib is hinged with a supporting seat on the temporary turnover platform; the top overhanging hoisting platform comprises a fixed pulley, a top drawknot steel wire rope and a top overhanging rod, the fixed pulley is arranged in the top overhanging rod, the top overhanging rod is fixedly connected with the conical tower crown through the top drawknot steel wire rope, and the tower crane hoisting steel wire rope is wound through the fixed pulley and is connected with a winch.
2. The large arm structure of the conical tower crown external hanging tower crane in the platform-free environment according to claim 1, characterized in that: the top cantilever rod can be formed by welding channel steel, I-steel or other combined structures, a solid steel bar and a galvanized steel pipe.
3. The large arm structure of the conical tower crown external hanging tower crane in the platform-free environment according to claim 1, characterized in that: middle part supporting platform includes bracing piece and middle part drawknot wire rope, and the bracing piece passes through middle part drawknot wire rope and toper tower crown fixed connection, the big arm of tower crane slides in the bracing piece.
4. The large arm structure of the conical tower crown external hanging tower crane in the platform-free environment according to claim 3, characterized in that: the support rod is H-shaped.
5. The method for dismantling the large arm structure of the conical tower crown external hanging tower crane in the platform-free environment according to any one of claims 1 to 4, wherein the method comprises the following steps: when the top of the large arm of the tower crane slides on the upper part of the middle supporting platform, the method comprises the following steps:
firstly, a large arm of a tower crane is fixedly tied with a hoisting steel wire rope of the tower crane through a fixed pulley of a top overhanging hoisting platform, the large arm of the tower crane is directly fixedly tied with a variable amplitude steel wire rope of the tower crane, and the bottom of the large arm of the tower crane is fixedly tied with a tie steel wire rope at the bottom;
step two, removing a connecting pin shaft of the bottom end of the large arm of the tower crane and the supporting seat, adjusting a bottom drawknot steel wire rope, and slowly lowering the bottom end part of the large arm of the tower crane to lean against a supporting rod of a middle supporting platform;
and step three, adjusting a crane hoisting steel wire rope to enable the large arm of the tower crane to slowly fall onto the temporary transfer platform, after temporary fixation, moving the bottom drawknot steel wire rope 1 to the bottom of the large arm of the upper standard joint, detaching a connecting pin shaft between the large arm of the bottom standard joint and the large arm of the upper standard joint of the large arm of the tower crane, hoisting the large arm of the tower crane to enable the large arm of the bottom standard joint of the large arm of the tower crane to be separated from the large arm of the upper standard joint, and transferring the large arm of the bottom standard joint to the bottom cantilever steel platform through a tower crane winch.
6. The method for dismantling the large arm structure of the conical tower crown external hanging tower crane in the platform-free environment according to claim 5, characterized in that: when the large arm of the tower crane slowly slides to the middle supporting platform, the large arm of the tower crane is removed by nearly half, and when the large arm of the tower crane is separated from the middle supporting platform, the method comprises the following steps:
step four, contracting the tower crane amplitude-variable steel wire rope, wherein the large arm of the tower crane is far away from the middle supporting platform;
fifthly, lowering the crane hoisting steel wire rope, and slowly approaching the large arm of the tower crane to the conical tower crown in the falling process;
step six, repeating the step four, and step five, adjusting the posture of a large arm of the tower crane through a tower crane amplitude-changing steel wire rope and a tower crane hoisting steel wire rope, so that the large arm of the tower crane keeps a safe distance from a curtain wall unit body of a conical tower crown in the falling process and does not collide with the curtain wall unit body;
and seventhly, completely removing the large arm of the tower crane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811039694.4A CN109095362B (en) | 2018-09-06 | 2018-09-06 | Large arm structure of conical tower crown external hanging tower crane in platform-free environment and dismantling method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811039694.4A CN109095362B (en) | 2018-09-06 | 2018-09-06 | Large arm structure of conical tower crown external hanging tower crane in platform-free environment and dismantling method thereof |
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| CN109095362A CN109095362A (en) | 2018-12-28 |
| CN109095362B true CN109095362B (en) | 2020-02-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734560A (en) * | 2009-12-18 | 2010-06-16 | 四川华西集团有限公司 | High-altitude dismantling method of inside-climbing tower crane for towering structure construction |
| CN105129633A (en) * | 2015-07-31 | 2015-12-09 | 中国建筑第四工程局有限公司 | Auxiliary tower crane demounting and mounting device and manufacturing method thereof |
| JP2016222397A (en) * | 2015-05-29 | 2016-12-28 | 日立住友重機械建機クレーン株式会社 | Tower crane |
| CN107055347A (en) * | 2017-05-22 | 2017-08-18 | 庄爱军 | A kind of high-rise Tower crane disassembly structures and methods installed |
-
2018
- 2018-09-06 CN CN201811039694.4A patent/CN109095362B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734560A (en) * | 2009-12-18 | 2010-06-16 | 四川华西集团有限公司 | High-altitude dismantling method of inside-climbing tower crane for towering structure construction |
| JP2016222397A (en) * | 2015-05-29 | 2016-12-28 | 日立住友重機械建機クレーン株式会社 | Tower crane |
| CN105129633A (en) * | 2015-07-31 | 2015-12-09 | 中国建筑第四工程局有限公司 | Auxiliary tower crane demounting and mounting device and manufacturing method thereof |
| CN105129633B (en) * | 2015-07-31 | 2017-03-29 | 中国建筑第四工程局有限公司 | A kind of auxiliary tower crane disassemblerassembler and preparation method thereof |
| CN107055347A (en) * | 2017-05-22 | 2017-08-18 | 庄爱军 | A kind of high-rise Tower crane disassembly structures and methods installed |
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