CN108483279A - The method for dismounting of adhesion tower-crane under narrow landform - Google Patents

The method for dismounting of adhesion tower-crane under narrow landform Download PDF

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Publication number
CN108483279A
CN108483279A CN201810346580.8A CN201810346580A CN108483279A CN 108483279 A CN108483279 A CN 108483279A CN 201810346580 A CN201810346580 A CN 201810346580A CN 108483279 A CN108483279 A CN 108483279A
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CN
China
Prior art keywords
tower
crane
balance weight
dismounting
fixed block
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Application number
CN201810346580.8A
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Chinese (zh)
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CN108483279B (en
Inventor
王朝晖
高忠建
罗政
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中国电建集团山东电力建设有限公司
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Priority to CN201810346580.8A priority Critical patent/CN108483279B/en
Publication of CN108483279A publication Critical patent/CN108483279A/en
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Publication of CN108483279B publication Critical patent/CN108483279B/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/16Cranes 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 with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details

Abstract

The present invention is to provide a kind of method for dismounting of the adhesion tower-crane for the dismounting cost reducing the adhesion tower-crane under narrow landform, belongs to technical field of building construction.The method for dismounting of adhesion tower-crane under narrow landform, includes the following steps:A) extra balance weight is removed;B) crane arm is removed;C), tower crane trim;D) tower body, is removed;E) counter-jib, tower cap and swing mechanism are removed.The method for dismounting of the present invention does not need large-scale lifting equipment in tower crane demolishing process, relatively low to the removal cost of tower crane.

Description

The method for dismounting of adhesion tower-crane under narrow landform

Technical field

The invention belongs to technical field of building construction, are specifically related to the dismounting side of the adhesion tower-crane under narrow landform Method.

Background technology

Currently, in building engineering construction, it is that building engineering construction is general to be set to the fixation adhesion tower-crane outside building All over the vertical transportation machinery used.The method for dismounting of conventional tower crane is:Crane arm is hung oneself with trim again by tower crane trim, and tower crane is matched It uses the hydraulic cylinder of the jacking stock on tower body to remove tower body from jacking drop section method after flat again, is finally removed again with crane flat Weight, crane arm, tower cap, swing mechanism etc..With the process of urbanization, land resource more becomes precious, the construction of tower crane Place also more becomes narrow, is limited by construction site, and tower crane often finds itself to be in and build after completing construction task Among building thick forest, the space that crane arm declines when building tower crane is saved from jacking drop is around had been unable to meet, therefore can not use normal The method of rule is removed.To remove tower crane, only first tower body crane arm is removed.Now, the attachment under narrow landform The method for dismounting of formula tower crane is mainly rented giant caterpillar formula hoisting machinery and is removed.Height according to building tower crane and lifting Arm weight need to meet the tower type work condition of crawler crane, and due to narrow around tower crane, the working space of crane is limited, Crane arm dismounting is also more difficult, causes above-mentioned method for dismounting cost too high.

Invention content

Technical problem to be solved by the invention is to provide a kind of dismountings reducing the adhesion tower-crane under narrow landform The method for dismounting of cost.

The technical solution adopted by the present invention to solve the technical problems is:The dismounting side of adhesion tower-crane under narrow landform Method first follows the steps below before removing tower body:

A) extra balance weight is removed;

A1, mast-up is set on counter-balanced carriage, the mast-up is located above balance weight, and the is arranged on the mast-up One is oriented to fixed block;It is arranged above the first fly block in balance weight;

A2, the guiding fixed block of hoist engine and tower cap, the first guiding fixed block and the first fly block composition are removed and is put down The Lift-on/Lift-off System of weight;

A3, balance weight is lifted on the first fly block, starts after hoist engine removes balance weight positioning pin and hangs to ground Face;

A4, balance weight is removed to when also remaining one piece of the close centre of gyration recently, the steel cable of hoist engine is put down from dismounting It is removed on the Lift-on/Lift-off System coaster of weight;

B) crane arm is removed;

B1, the second fly block is set in the connecting pin of crane arm, the second fly block is connect with crane arm;By hoist engine with The Lift-on/Lift-off System for being oriented to fixed block and the second fly block composition dismounting crane arm of tower cap;Hoisting apparatus is set, by crane arm Outer end is lifted on hoisting apparatus;

B2, hoist engine and hoisting apparatus are started, removed crane arm after the connection axis pin and pull rod of crane arm connecting pin It hangs on building;

B3, the a2 and a3 for repeating step a) remove remaining one piece of balance weight;

B4, it is lifted to ground with the Lift-on/Lift-off System of hoisting apparatus or dismounting balance weight after removing crane arm segmentation;

C) tower crane trim;

It is provided with flatrack in the symmetry direction of counter-jib;Described hinged with tower cap with flatrack one end, one end is hanging, and outstanding Dead end is equipped with the adjusting rope being connect with tower cap;The second guiding fixed block and the dynamic cunning of third are connected with below with flatrack free end Vehicle;Hoist engine and second are oriented to the Lift-on/Lift-off System of fixed block and third fly block composition lifting trim weight;Trim is hung again By tower crane trim on third fly block;

D) tower body, is removed;

The axis pin of the standard knot connection of d1, dismounting swing mechanism and tower body jacks up swing mechanism with the oil cylinder of jacking stock, The standard knot is disengaged it from, the introduction trolley on swing mechanism is connect with the standard knot, the standard knot is removed and is connected with tower body The axis pin connect;Jacking is continued up, the standard knot is made to be detached from tower body, is released the standard knot outside tower body using trolley is introduced;

D2, it drives swing mechanism above section to move down with the oil cylinder of jacking stock, it is made to be reconnected together with tower body, Loose hoist engine hangs trim again to ground, and adjustment adjusting rope makes third fly block to introducing above trolley, standard knot is lifted On third fly block and hung to ground;

D3, starting hoist engine sling trim and carry out tower crane trim again again, repeat step d1, d2;

E) counter-jib, tower cap and swing mechanism are removed.

Preferably, the fixed block that is oriented to of tower cap described in step a) a2 is the guiding fixed block in the middle part of tower cap.

Preferably, the guiding fixed block of tower cap described in step b) b1 is the guiding fixed block in tower crown portion.

Preferably, described to be additionally provided with cucurbit with flatrack (7) free end in step c), by adjusting rope, cucurbit and tower cap Top fixed block composition adjustment system is to adjust adjusting rope length, luffing of the control with flatrack.

The beneficial effects of the invention are as follows:The method for dismounting of adhesion tower-crane under the narrow landform of the present invention, utilizes tower crane Itself hoist engine form simple tackling system and remove balance weight, then a hoisting apparatus is set and is coordinated with it, realize that two-shipper is lifted It hangs, removes entire crane arm, remove crane arm and recycle hoisting apparatus or the Lift-on/Lift-off System of dismounting balance weight by segmentation later Crane arm is lifted to ground, and tower crane crane arm is removed easy.By tower crane trim after crane arm dismounting, hydraulic lifting is used after trim again Device removes tower body, finally removes counter-jib, tower cap and swing mechanism, and large-scale rising is not needed in tower crane demolishing process and is reseted It is standby, it is relatively low to the removal cost of tower crane.

Description of the drawings

Fig. 1 is structural schematic diagram of the adhesion tower-crane of the present invention when removing balance weight;

Fig. 2 is structural schematic diagram of the adhesion tower-crane of the present invention when removing crane arm;

Fig. 3 be the present invention adhesion tower-crane after removing crane arm tower crane trim structural schematic diagram;

Fig. 4 is structural schematic diagram of the adhesion tower-crane of the present invention when removing tower body;

As shown in the figure:1. crane arm, 2. counter-jibs, 3. mast-ups, 4. jacking stocks, 5. tower caps, 6. hoisting apparatus, 7. match Flatrack, 8. trim weights, 9. buildings, 10. adjusting ropes, 11, swing mechanism, 12. tower bodies, 13. second fly blocks, 14. cucurbits, 15. trolley is introduced, 21. counter-balanced carriages, 22. balance weights, 23. hoist engines, 31. first guiding fixed blocks, 32. first fly blocks, 71. Second is oriented to fixed block, and 72, third fly block.

Specific implementation mode

Present invention will be further explained below with reference to the attached drawings and examples.

As shown in Figures 1 to 4, the method for dismounting of the adhesion tower-crane under narrow landform, includes the following steps:

A) extra balance weight is removed;

A1, mast-up 3 is set on counter-balanced carriage 21, the mast-up 3 is located at 22 top of balance weight, in the mast-up 3 Upper setting first is oriented to fixed block 31;It is arranged above the first fly block 32 in balance weight 22;

A2, hoist engine 23 and the guiding fixed block, the first guiding fixed block 31 and the first fly block 32 of tower cap 5 are formed Remove the Lift-on/Lift-off System of balance weight 22;

A3, balance weight 22 is lifted on the first fly block 32, starting hoist engine 23 will be after the dismounting of 22 positioning pin of balance weight It hangs to ground;

A4, when balance weight 22 is removed to also surplus nearest one piece close to the centre of gyration, by the steel cable of hoist engine 23 from tearing open Except being removed on the Lift-on/Lift-off System coaster of balance weight 22;

B) crane arm is removed;

B1, second fly block 13 is set in the connecting pin of crane arm 1, the second fly block 13 is connect with crane arm 1;It will volume Raise the Lift-on/Lift-off System that is oriented to fixed block and second fly block 13 composition dismounting crane arm 1 of the machine 23 with tower cap 5;Refitting has been set 6 are set, 1 outer end of crane arm is lifted on hoisting apparatus 6;

B2, hoist engine 23 and hoisting apparatus 6 are started, will be risen after removing the connection axis pin and pull rod of 1 connecting pin of crane arm Weighing arm 1 is hung on building 9;

B3, the a2 and a3 for repeating step a) remove remaining one piece of balance weight;

B4, it is lifted to ground with the Lift-on/Lift-off System of hoisting apparatus 6 or dismounting balance weight 22 after removing the segmentation of crane arm 1 Face;

C) tower crane trim;

It is provided with flatrack 7 in the symmetry direction of counter-jib 2;Described hinged with tower cap 5 with 7 one end of flatrack, one end is hanging, And free end is equipped with the adjusting rope 10 being connect with tower cap 5;It is connected with 71 He of the second guiding fixed block below with 7 free end of flatrack Third fly block 72;Hoist engine 23 and the second guiding fixed block 71 and the composition lifting trim of third fly block 72 are weighed 8 and hung Dress system;Trim is weighed 8 to be lifted on tower crane trim on third fly block 72;

D) tower body, is removed;

D1, the axis pin that swing mechanism 11 is connect with the standard knot of tower body 12 is removed, revolution is jacked up with the oil cylinder of jacking stock 4 Mechanism 11 disengages it from the standard knot, and the introduction trolley on swing mechanism 11 is connect with the standard knot, remove the standard knot with The axis pin that tower body 12 is connected;Jacking is continued up, the standard knot and tower body 12 is made to be detached from, using introducing trolley by the standard knot It releases outside tower body 12;

D2, it drives 11 above section of swing mechanism to move down with the oil cylinder of jacking stock 4, it is made to be reconnected in tower body 12 Together, trim is weighed 8 and hung to ground by loose hoist engine 23, and adjustment adjusting rope 10 makes above third fly block 72 to introduction trolley, Standard knot is lifted on third fly block 72 and is hung to ground;

D3, starting hoist engine 23 sling trim and weigh 8 progress tower crane trims again, repeat step d1, d2;

E) counter-jib, tower cap and swing mechanism are removed.

When removing extra balance weight, on counter-balanced carriage 21 be arranged mast-up 3, mast-up 3 can weld or screw connection Mode is arranged on counter-balanced carriage 21.The effect that the first fly block 32 is arranged above in balance weight 22 is to ensure lifting balance weight 22 Shi Shouli is upward, consequently facilitating removing balance weight.Hoist engine 23 and the guiding fixed block of tower cap 5, the guiding of mast-up 3 are slided surely Fly block composition right over vehicle and balance weight 22 removes the Lift-on/Lift-off System of balance weight 22, i.e., by the steel cable of tower crane hoist engine 23 It is connected in mast-up 3 or coaster after the guiding fixed block, the first guiding fixed block 31 and the first fly block 32 of tower cap 5 Upper (being determined by the canoe of steel cable and coaster) forms pulley blocks, as shown in Figure 1, being that steel cable is fixed on mast-up 3 in figure On.Lift-on/Lift-off System principle is to pull steel cable that the first fly block 32 can be made to move up and down using hoist engine 23, will be balanced to realize Weigh 22 dismountings.First fly block 32 can be used suspension hook coaster, and the fairlead during the guiding fixed block of tower cap 5 can be can also The fairlead at the top of it, preferably middle part fairlead.When removing balance weight 22, it should slowly start hoist engine 23 and tighten steel Rope slowly slings balance weight 22, after the axis pin for removing fixed balance weight 22, then slowly starts the loose system for winding engine cable of hoist engine 23, Until putting balance weight 22 to ground.The purpose for first removing extra balance weight is after preventing from removing crane arm 1, and counter-jib 2 is to tower The torque of cap 5 is excessive, causes tower crane damage or unstability.

When removing crane arm, second fly block 13 is set in the connecting pin of crane arm 1, the second fly block 13 is arranged as possible to be leaned on The connecting pin of nearly crane arm 1, in order to lift.By 13 groups of the guiding fixed block and the second fly block of hoist engine 23 and tower cap 5 At the Lift-on/Lift-off System for removing crane arm 1, the guiding fixed block of tower cap 5 can be the guiding fixed block in wherein portion or top, such as Fig. 2 It is shown, the guiding fixed block of preferred top.The guiding fixed block lifting at top is more convenient.Setting refitting sets 6, and hoisting apparatus 6 can Setting is preferably provided on building or on ground on building.Hoisting apparatus 6 can be easy gin pole.It rises Dynamic hoist engine 23 and hoisting apparatus 6, crane arm 1 is removed and is hung on building 9, i.e., will be risen by the way of two-shipper lifting Weighing arm 1 is removed, therefore smaller to the tonnage demand of hoisting apparatus 6, convenient for setting.It removes crane arm 1 and has recycled refitting later It sets 6 or removes the Lift-on/Lift-off System of balance weight and lift the crane arm 1 of segmentation to ground, using the above method, tower crane crane arm is torn open Except simplicity, removal cost is relatively low.

After removing crane arm, such as not trim, tower crane upper end can be under the moment loading of counter-jib to putting down when jacking One side of arm that weighs tilts, and after the stabilizer blade of pivoting support leaves with the fish platee of lower section standard knot, will lead to the stabilizer blade of pivoting support It with the fish platee serious dislocation of standard knot, cannot take a seat again, bring immeasurable trouble and safety hidden to the dismounting of tower body Suffer from, it is serious to be also possible to that machine security accident is caused (such as the deformation of stock section, tower crane collapse).Therefore, it need to will remove The tower crane trim of weighing arm.Tower crane trim principle is anti-to the torque of tower body with counter-jib 2 in 2 symmetry direction of counter-jib setting one To torque so that the two offsets.The effect of adjusting rope 10 is to make to match about 7 flatrack by adjusting the length of adjusting rope 10 It rotates (i.e. luffing), to realize to the torque adjusting with flatrack side, and also to be easy to lift standard knot.Steel cable 10 can be with It is connect with the hoist engine on ground and realizes length adjustment, as shown in figure 3, being to be additionally provided with cucurbit 14 in free end in figure, by adjusting rope 10, cucurbit 14 and 5 top fixed block of tower cap form adjustment system.Cucurbit 14 can be bottle gouard moved by hands, or electric block, Adjusting rope 10 is adjusted by cucurbit.

After trim, the hydraulic cylinder for jacking stock removes tower-body standard section from jacking drop section method, and band tower body is reduced to can Remove counter-jib, tower cap with ground small lifting equipment and when swing mechanism, with ground small lifting equipment remove counter-jib, Tower cap and swing mechanism.

Finally remove remaining tower body.

The method for dismounting of adhesion tower-crane under the narrow landform of the present invention, takes full advantage of the design feature of tower crane itself Crane arm 1 and balance weight 22 are removed, method for dismounting is relatively simple, and the dismounting working efficiency of tower crane, tower crane can be improved Demolishing process in large lifting equipment need not be set, to save expense.

Claims (4)

1. the method for dismounting of the adhesion tower-crane under narrow landform, includes the following steps:
A) extra balance weight is removed;
A1, mast-up (3) is set on counter-balanced carriage (21), the mast-up (3) is located above balance weight (22), in the lifting Setting first is oriented to fixed block (31) on frame (3);It is arranged above the first fly block (32) in balance weight (22);
A2, the guiding fixed block of hoist engine (23) and tower cap (5), first are oriented to fixed block (31) and the first fly block (32) Composition removes the Lift-on/Lift-off System of balance weight (22);
A3, balance weight (22) is lifted on the first fly block (32), starts hoist engine (23) and tears balance weight (22) positioning pin open It is hung after removing to ground;
A4, when balance weight (22) is removed to also surplus nearest one piece close to the centre of gyration, by the steel cable of hoist engine (23) from tearing open Except being removed on the Lift-on/Lift-off System coaster of balance weight (22);
B) crane arm is removed;
B1, the second fly block (13) is set in the connecting pin of crane arm (1), the second fly block (13) is connect with crane arm (1); Guiding fixed block and the second fly block (13) composition of hoist engine (23) and tower cap (5) are removed to the lifting system of crane arm (1) System;Hoisting apparatus (6) is set, crane arm (1) outer end is lifted on hoisting apparatus (6);
B2, hoist engine (23) and hoisting apparatus (6) are started, it will after the connection axis pin and pull rod of dismounting crane arm (1) connecting pin Crane arm (1) is hung on building (9);
B3, the a2 and a3 for repeating step a) remove remaining one piece of balance weight;
B4, it is lifted to ground with the Lift-on/Lift-off System of hoisting apparatus (6) or dismounting balance weight (22) after removing crane arm (1) segmentation Face;
C) tower crane trim;
It is provided with flatrack (7) in the symmetry direction of counter-jib (2);It is described to be hinged with flatrack (7) one end and tower cap (5), one end Vacantly, and free end is equipped with the adjusting rope (10) being connect with tower cap (5);It is led being connected with second with flatrack (7) free end lower section To fixed block (71) and third fly block (72);Hoist engine (23) and second are oriented to fixed block (71) and third fly block (72) Lift-on/Lift-off System of composition lifting trim weight (8);Trim weight (8) is lifted on tower crane trim on third fly block (72);
D) tower body, is removed;
D1, the axis pin that swing mechanism (11) is connect with the standard knot of tower body (12) is removed, is jacked up back with the oil cylinder of jacking stock (4) Rotation mechanism (11), disengages it from the standard knot, and the introduction trolley on swing mechanism (11) is connect with the standard knot, removes the mark The axis pin that quasi- section is connected with tower body (12);Jacking is continued up, the standard knot is made to be detached from tower body (12), utilizes introduction trolley The standard knot is released into tower body (12) outside;
D2, it drives swing mechanism (11) above section to move down with the oil cylinder of jacking stock (4), it is made to be reconnected with tower body (12) Together, loose hoist engine (23) hangs trim weight (8) to ground, and adjustment adjusting rope (10) makes third fly block (72) to introduction Above trolley, standard knot is lifted on third fly block (72) and is hung to ground;
D3, starting hoist engine (23) sling trim weight (8) and carry out tower crane trim again, repeat step d1, d2;
E) counter-jib, tower cap and swing mechanism are removed.
2. the method for dismounting of the adhesion tower-crane under narrow landform as described in claim 1, it is characterised in that:In step a) a2 The guiding fixed block of the tower cap (5) is the guiding fixed block in the middle part of tower cap (5).
3. the method for dismounting of the adhesion tower-crane under narrow landform as described in claim 1, it is characterised in that:In step b) b1 The guiding fixed block of the tower cap (5) is the guiding fixed block at the top of tower cap (5).
4. the method for dismounting of the adhesion tower-crane under narrow landform as claimed in claim 1,2 or 3, it is characterised in that:Step C) described to be additionally provided with cucurbit (14) with flatrack (7) free end in, by the top of adjusting rope (10), cucurbit (14) and tower cap (5) Fixed block forms adjustment system to adjust adjusting rope (10) length, luffing of the control with flatrack (7).
CN201810346580.8A 2018-04-17 2018-04-17 The method for dismounting of adhesion tower-crane under narrow landform CN108483279B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109678067A (en) * 2019-01-29 2019-04-26 国网山东省电力公司建设公司 A kind of assist removal device for tower crane

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1763347A1 (en) * 1989-06-19 1992-09-23 Московское Производственное Объединение "Строймаш" Tower crane and method of dismantling it
CN201458596U (en) * 2009-08-14 2010-05-12 河北省电力建设第一工程公司 Crane with self-dismounting device
CN202390113U (en) * 2011-12-16 2012-08-22 西安市第四建筑工程公司 Hoisting and demounting device attached to tower crane for building
CN205114903U (en) * 2015-11-21 2016-03-30 广东庞源工程机械有限公司 Demolition structure of tower crane counter weight
CN205555924U (en) * 2016-04-28 2016-09-07 山东腾飞建设机械工程有限公司 A system's device for high altitude dismantlement tower crane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1763347A1 (en) * 1989-06-19 1992-09-23 Московское Производственное Объединение "Строймаш" Tower crane and method of dismantling it
CN201458596U (en) * 2009-08-14 2010-05-12 河北省电力建设第一工程公司 Crane with self-dismounting device
CN202390113U (en) * 2011-12-16 2012-08-22 西安市第四建筑工程公司 Hoisting and demounting device attached to tower crane for building
CN205114903U (en) * 2015-11-21 2016-03-30 广东庞源工程机械有限公司 Demolition structure of tower crane counter weight
CN205555924U (en) * 2016-04-28 2016-09-07 山东腾飞建设机械工程有限公司 A system's device for high altitude dismantlement tower crane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109678067A (en) * 2019-01-29 2019-04-26 国网山东省电力公司建设公司 A kind of assist removal device for tower crane

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