CN105110205A - Reverse disassembling method for tower crane - Google Patents

Reverse disassembling method for tower crane Download PDF

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Publication number
CN105110205A
CN105110205A CN201510470713.9A CN201510470713A CN105110205A CN 105110205 A CN105110205 A CN 105110205A CN 201510470713 A CN201510470713 A CN 201510470713A CN 105110205 A CN105110205 A CN 105110205A
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China
Prior art keywords
tower
tower crane
standard knot
door frame
counterweight
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CN201510470713.9A
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CN105110205B (en
Inventor
崔文才
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China Construction Second Engineering Bureau Co Ltd Shenzhen Branch
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China Construction Second Engineering Bureau Co Ltd Shenzhen Branch
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Abstract

The invention discloses a reverse disassembling method for a tower crane. Under the condition that the tower crane cannot be normally disassembled, a guide wheel is arranged at the position, 3 m away from a tower body, of a balance arm of the tower crane, a two-rope lifting hook is arranged through the guide wheel, and a hoisting mechanism is formed. A hoisting rope is guided out of the hoisting mechanism through a main winch, and the hoisting rope passes through a hoisting sheave to the guide wheel which is arranged on a small special portal at the position, 3 m away from the tower body, of the balance arm. The hoisting rope is connected with a movable pulley in series after passing through the guide wheel. The end of the hoisting rope is anchored on a cross beam of the small special portal at the position, 3 m away from the tower body, of the balance arm. Disassembled standard joints are hoisted by the self-assembly hoisting mechanism to the ground, and therefore the aim of tower lowering is achieved.

Description

A kind of reverse method for dismounting of tower crane
Technical field
The invention belongs to construction machine equipment technical field, particularly relate to a kind of dismounting implemented by tower crane to tower crane method when cannot normally dismantle.
Background technology
In building operation, due to design modification or arrange inconsiderate cause tower crane to construct after normally cannot dismantle and happen occasionally, just need to take special method once generation, special equipment is selected to carry out high-altitude decomposition to tower crane, this is wasting manpower and material resources not only, duration also can not get ensureing, and easily safety misadventure occurs in unloading process.
Summary of the invention
Technical matters to be solved by this invention is to provide the reverse disassembly method of tower crane that a kind of time is short, cost is low, efficiency is high.
The present invention is achieved through the following technical solutions: a kind of reverse method for dismounting of tower crane, specifically comprises following concrete steps:
Step one, self-control small, dedicated door frame is set above balance arm of tower-type crane counterweight, small, dedicated door frame 4 groups of clevis bolts are connected with equilibrium arm two major trough steel, small, dedicated door frame comprises crossbeam, and with the processing of channel-section steel make-up, crossbeam is provided with one group, fixed pulley, first of wire cable anchor, two symmetrical columns, with the processing of channel-section steel make-up, two symmetrical inclined palms, with the processing of channel-section steel make-up, one group of steel wire rope anchor head;
Step 2, first by the dismounting of former tower crane derrick line, derrick line is drawn by master winch, wear around in the track adjusting wheel on small, dedicated door frame through head sheave, contact after one group of movable pulley wears moving pulley as (suspension hook) derrick line through track adjusting wheel again, lifting fag end is anchored on the anchor head that is arranged on self-control small, dedicated door frame, at this moment forms new hoist mechanism;
The hoist mechanism of the new composition of step 3, use hangs one piece, osmanthus counterweight, start the action that hoists to hook up, counterweight hoist 100mm stop, take out counterweight lock pin, transfer counterweight to ground, dismantle derrick line after repeating said procedure dismounting 2-3 block counterweight, wear by the former derrick line of tower crane and again wear around derrick line around mode;
Step 4, derrick line hang the certain weight body in osmanthus after wearing and winding, standard knot travelling car makes jacking stock perpendicular to tower body, start jacking apparatus by tower head top from tower body 50mm, observation locating dowel pin and knock hole difference, determine that balancing rear use two 2t jacks is fixed on tower crane trolley by standard knot;
Step 5, again by the dismounting of former tower crane derrick line, self-control small, dedicated door frame is moved forward to apart from tower body 3000mm place, be connected with equilibrium arm two major trough steel with 4 groups of U-shaped screws, derrick line is drawn again by master winch, wear around in the track adjusting wheel on small, dedicated door frame through head sheave, contact after one group of movable pulley wears moving pulley as (suspension hook) derrick line through track adjusting wheel again, lifting fag end is anchored on the anchor head that is arranged on self-control small, dedicated door frame, forms hoist mechanism again;
Step 6, at this moment tower crane arm before and after is in state of equilibrium, starting jacking apparatus makes standard knot topmost depart from tower body by tower head jack-up, according to the difference of tower crane model, disconnecting gear is also variant, there is support roller formula and hang osmanthus formula, topmost standard knot is released stock to introducing platform after departing from tower body, decline after two strokes, fill it up with frock pin, at crane arm and tower cap junction, a 2t jack is set, the faller of standard knot near tower body side that osmanthus disassembles is hung with jack, faller outside standard knot that osmanthus disassembles is hung again with the hoist mechanism from group, start after tightening up jack and hook up action, at this moment the standard knot disassembled becomes angle of inclination to leave introduction platform, after loosening jack, standard knot is naturally vertical, transfer standard knot to ground and complete a standard knot unloading process, repeat said procedure until dismantle whole standard knot, reach the object of dismounting tower crane.
As preferred technical scheme, described small, dedicated door frame comprises one from group equilibrium arm hoisting device, described small, dedicated door frame comprises crossbeam, column, the oblique palm, track adjusting wheel, suspension hook, lifting anchor head, leg and clevis bolt, the described equilibrium arm of group certainly hoisting device comprises master winch, flake down drum, flake down drum two ends are equipped with rope blocking plate, wherein rope blocking plate the inner of inner side is provided with connecting panel, connecting panel is provided with mounting hole, steel rope is connected with flake down drum by mounting hole, described track adjusting wheel is installed on the front end of crossbeam, oblique palm end connects with crossbeam, the lower end of the oblique palm is installed on leg, column is installed on the both sides, upper end of leg.
As preferred technical scheme, described crossbeam adopts No. 14 channel-section steels to weld with dismantled balance weight make-up, column adopts No. 14 channel-section steels, oblique palm employing No. 12 channel-section steels, 5t snatch block selected by suspension hook, and lifting anchor head adopts round steel to make, crossbeam is provided with one group, fixed pulley, column is provided with two, and tiltedly the palm is provided with symmetrical two, processes with channel-section steel make-up.
As preferred technical scheme, crane arm 35m place's hanging one is for adjusting the counterweight of crane arm and equilibrium arm balance.
The invention has the beneficial effects as follows: the present invention is novel in design, easy to use, be easy to operation, tower crane self power is utilized to dismantle tower crane smoothly, this method is tested through practical application, faster, safer than normal tower crane method for dismounting.Be that the method eliminates dolly counterweight of hanging repeatedly and puts counterweight, balance-seeking soon, hang the standard knot disassembled, then hang the action of counterweight balance-seeking.Safety is that tower crane is in state of equilibrium all the time in the process of dismounting tower crane, smooth operation is without rocking, provide the tower crane method for dismounting that a kind of cost is low, the time is short, efficiency is high, also expanded the dismounting mode of tower crane simultaneously, save nonrecurring cost more than 100 ten thousand yuan, there is very strong practicality, be worthy to be popularized.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the front view of special small door frame of the present invention;
Fig. 2 is the lateral plan of special small door frame of the present invention;
Fig. 3 is of the present invention from group hoist mechanism unloading counterweight schematic diagram;
Fig. 4 is adjustment crane arm equilibrium arm equilibrium point schematic diagram of the present invention;
Fig. 5 is that the hoist mechanism of group certainly of the present invention hangs osmanthus standard knot schematic diagram;
Fig. 6 of the present inventionly puts the standard knot schematic diagram disassembled;
1, crossbeam; 2, column; 3, tiltedly slap; 4, track adjusting wheel; 5, suspension hook; 6, anchor head; 7, leg; 8, clevis bolt; 9, master winch; 10, head sheave; 11, small-sized door frame is made by oneself; 12, counterweight; 13, jack; 14, standard knot.
Detailed description of the invention
All features disclosed in this specification sheets, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this specification sheets (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
One, dead work
As depicted in figs. 1 and 2, make a set of small, dedicated door frame, small, dedicated door frame is made up of crossbeam, column, the tiltedly palm, suspension hook, derrick line anchor head, the balance weight that crossbeam root is dismantled adopts No. 14 channel-section steel make-up welding, column adopts No. 14 channel-section steels, oblique palm employing No. 12 channel-section steels, 5t snatch block selected by suspension hook, and derrick line anchor head can adopt garden steel to do.
Two, fixing small, dedicated door frame
After dead work performs, tower crane derrick line is dismantled, the more special door frame of self-control special small is fastenedly connected with the high strength bolt of 4 cover U-shaped φ 20 and equilibrium arm two major trough steel above outmost counterweight, complete the fixing of first time small-sized door frame.
Three, wear around derrick line
As shown in Figure 3, wear around derrick line, derrick line is drawn by master winch, through head sheave (tower crane first wife) to the track adjusting wheel on self-control small, dedicated door frame, then is worn by track adjusting wheel and is fixed on anchor head around heavy fag end of slinging, composition hoist mechanism.
Four, counterweight is dismantled
Utilize the hoist mechanism from group, hang osmanthus counterweight with very heavy, the every block 3.6t of counterweight, start the action that hoists, counterweight is hung after rising 100mm and stop, after taking out the lock pin of counterweight, transfer counterweight to ground, dismantle 2 pieces of counterweights, object reduces the larger capsizing moment of off working state.
Five, leveling
After dismantling 2 pieces of counterweights, the off working state capsizing moment of tower machine reduces greatly, at this moment again wear by the former derrick line of tower crane and again wear around derrick line around mode, derrick line wear around after hang a joint standard knot, the weight 1000kg of one joint standard knot, make stock perpendicular to tower body by the position of front and back adjustment dolly, complete preliminary leveling, start jacking apparatus by tower head top from tower body 50mm, whether observation locating dowel pin is vertical with knock hole, fine motion dolly adjustment make locating dowel pin and knock hole vertical consistent after, tower head is fallen and fills whole frock pin, with jack, leveling standard knot is fixed on dolly again, dismounting derrick line completes leveling procedure.
Six, small, dedicated door frame is set
The self-control small, dedicated door frame having dismantled counterweight is moved to and adopts 4 to overlap the high strength bolt of U-shaped φ 20 apart from tower body 3000mm place and equilibrium arm two major trough steel and equilibrium arm two major trough steel are fastenedly connected.
Seven, wear around derrick line
As shown in Figure 5, wear around derrick line, derrick line is drawn by master winch, through head sheave (tower crane first wife) to the track adjusting wheel on self-control small, dedicated door frame, then is worn by track adjusting wheel and is fixed on anchor head around suspension hook lifting fag end, reformulate hoist mechanism.
Eight, tower falls
As shown in Figure 6, the whole frock pin of dismounting standard knot, start jacking apparatus at this moment tower crane arm before and after be in state of equilibrium, starting jacking apparatus makes standard knot topmost depart from tower body by tower head jack-up, according to the difference of tower crane model, disconnecting gear is also variant, there is support roller formula and hang osmanthus formula, topmost standard knot is released stock to introducing platform after departing from tower body, decline after two strokes, fill it up with frock pin, at crane arm and tower cap junction, a 2t jack is set, the faller of standard knot near tower body side that osmanthus disassembles is hung with jack, faller outside standard knot that osmanthus disassembles is hung again with the hoist mechanism from group, start after tightening up jack and hook up action, at this moment the standard knot disassembled becomes angle of inclination to leave introduction platform, after loosening jack, standard knot is naturally vertical, transfer standard knot to ground and complete a standard knot unloading process, repeat said procedure until dismantle whole standard knot, reach the object of dismounting tower crane.
Its principal feature is simple to operate, method novelty is unique, use is extensive, widened the method for dismounting of tower crane, through practical application the method than normal disassembly method sooner, more steady, safer, be that the method eliminates dolly counterweight of hanging repeatedly and puts counterweight soon, balance-seeking, hang the standard knot disassembled, then hang the action of counterweight balance-seeking.Safety is that tower crane is in state of equilibrium all the time in the process of dismounting tower crane, smooth operation is without rocking, provide the tower crane method for dismounting that a kind of cost is low, the time is short, efficiency is high, also expanded the dismounting mode of tower crane simultaneously, save nonrecurring cost more than 100 ten thousand yuan, there is very strong practicality, be worthy to be popularized.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.

Claims (4)

1. a reverse method for dismounting for tower crane, is characterized in that, specifically comprises following concrete steps:
Step one, self-control small, dedicated door frame is set above balance arm of tower-type crane counterweight, small, dedicated door frame 4 groups of clevis bolts are connected with equilibrium arm two major trough steel, small, dedicated door frame comprises crossbeam, and with the processing of channel-section steel make-up, crossbeam is provided with one group, fixed pulley, first of wire cable anchor, two symmetrical columns, with the processing of channel-section steel make-up, two symmetrical inclined palms, with the processing of channel-section steel make-up, one group of steel wire rope anchor head;
Step 2, first by the dismounting of former tower crane derrick line, derrick line is drawn by master winch, wear around in the track adjusting wheel on small, dedicated door frame through head sheave, contact after one group of movable pulley wears moving pulley as (suspension hook) derrick line through track adjusting wheel again, lifting fag end is anchored on the anchor head that is arranged on self-control small, dedicated door frame, at this moment forms new hoist mechanism;
The hoist mechanism of the new composition of step 3, use hangs one piece, osmanthus counterweight, start the action that hoists to hook up, counterweight hoist 100mm stop, take out counterweight lock pin, transfer counterweight to ground, dismantle derrick line after repeating said procedure dismounting 2-3 block counterweight, wear by the former derrick line of tower crane and again wear around derrick line around mode;
Step 4, derrick line hang the certain weight body in osmanthus after wearing and winding, standard knot travelling car makes jacking stock perpendicular to tower body, start jacking apparatus by tower head top from tower body 50mm, observation locating dowel pin and knock hole difference, determine that balancing rear use two 2t jacks is fixed on tower crane trolley by standard knot;
Step 5, again by the dismounting of former tower crane derrick line, self-control small, dedicated door frame is moved forward to apart from tower body 3000mm place, be connected with equilibrium arm two major trough steel with 4 groups of U-shaped screws, derrick line is drawn again by master winch, wear around in the track adjusting wheel on small, dedicated door frame through head sheave, contact after one group of movable pulley wears moving pulley as (suspension hook) derrick line through track adjusting wheel again, lifting fag end is anchored on the anchor head that is arranged on self-control small, dedicated door frame, forms hoist mechanism again;
Step 6, at this moment tower crane arm before and after is in state of equilibrium, starting jacking apparatus makes standard knot topmost depart from tower body by tower head jack-up, according to the difference of tower crane model, disconnecting gear is also variant, there is support roller formula and hang osmanthus formula, topmost standard knot is released stock to introducing platform after departing from tower body, decline after two strokes, fill it up with frock pin, at crane arm and tower cap junction, a 2t jack is set, the faller of standard knot near tower body side that osmanthus disassembles is hung with jack, faller outside standard knot that osmanthus disassembles is hung again with the hoist mechanism from group, start after tightening up jack and hook up action, at this moment the standard knot disassembled becomes angle of inclination to leave introduction platform, after loosening jack, standard knot is naturally vertical, transfer standard knot to ground and complete a standard knot unloading process, repeat said procedure until dismantle whole standard knot, reach the object of dismounting tower crane.
2. the reverse method for dismounting of tower crane according to claim 1, it is characterized in that: described small, dedicated door frame comprises crossbeam, column, the oblique palm, track adjusting wheel, suspension hook, lifting anchor head, leg and clevis bolt, the described equilibrium arm of group certainly hoisting device comprises master winch, flake down drum, flake down drum two ends are equipped with rope blocking plate, wherein rope blocking plate the inner of inner side is provided with connecting panel, connecting panel is provided with mounting hole, steel rope is connected with flake down drum by mounting hole, described track adjusting wheel is installed on the front end of crossbeam, oblique palm end connects with crossbeam, the lower end of the oblique palm is installed on leg, column is installed on the both sides, upper end of leg.
3. the reverse method for dismounting of tower crane according to claim 1, it is characterized in that: described crossbeam adopts No. 14 channel-section steels to weld with dismantled balance weight make-up, column adopts No. 14 channel-section steels, oblique palm employing No. 12 channel-section steels, 5t snatch block selected by suspension hook, and lifting anchor head adopts round steel to make, crossbeam is provided with one group, fixed pulley, column is provided with two, and tiltedly the palm is provided with symmetrical two, processes with channel-section steel make-up.
4. the reverse detaching structure of tower crane according to claim 1, is characterized in that: crane arm 35m place's hanging one is for adjusting the counterweight of crane arm and equilibrium arm balance.
CN201510470713.9A 2015-09-29 2015-09-29 A kind of reverse method for dismounting of derrick crane Active CN105110205B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285041A (en) * 2016-08-16 2017-01-04 中国建筑第二工程局有限公司 Tower method reversely drops in a kind of tower crane
CN108975181A (en) * 2018-08-15 2018-12-11 中国电建集团贵州电力设计研究院有限公司 A kind of method for dismounting of derrick crane
CN110094101A (en) * 2018-01-31 2019-08-06 中国二十冶集团有限公司 The method that tower crane removes standard knot under restricted clearance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1024106A1 (en) * 1999-01-27 2000-08-02 Potain Method and device for mounting of the top of the tower of tower cranes
CN102491207A (en) * 2011-12-20 2012-06-13 中联重科股份有限公司 Movable-arm tower crane
CN103295457A (en) * 2013-05-22 2013-09-11 温州建设集团有限公司 Examining and training teaching aid and method for assembling and disassembling tower crane
CN203345950U (en) * 2013-07-04 2013-12-18 长沙海川自动化设备有限公司 Dismounting control system of tower crane
CN104495648A (en) * 2014-11-05 2015-04-08 中联重科股份有限公司 Crane arm loading and unloading method and crane arm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1024106A1 (en) * 1999-01-27 2000-08-02 Potain Method and device for mounting of the top of the tower of tower cranes
CN102491207A (en) * 2011-12-20 2012-06-13 中联重科股份有限公司 Movable-arm tower crane
CN103295457A (en) * 2013-05-22 2013-09-11 温州建设集团有限公司 Examining and training teaching aid and method for assembling and disassembling tower crane
CN203345950U (en) * 2013-07-04 2013-12-18 长沙海川自动化设备有限公司 Dismounting control system of tower crane
CN104495648A (en) * 2014-11-05 2015-04-08 中联重科股份有限公司 Crane arm loading and unloading method and crane arm

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106285041A (en) * 2016-08-16 2017-01-04 中国建筑第二工程局有限公司 Tower method reversely drops in a kind of tower crane
CN110094101A (en) * 2018-01-31 2019-08-06 中国二十冶集团有限公司 The method that tower crane removes standard knot under restricted clearance
CN108975181A (en) * 2018-08-15 2018-12-11 中国电建集团贵州电力设计研究院有限公司 A kind of method for dismounting of derrick crane

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