CN105110205B - A kind of reverse method for dismounting of derrick crane - Google Patents
A kind of reverse method for dismounting of derrick crane Download PDFInfo
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- CN105110205B CN105110205B CN201510470713.9A CN201510470713A CN105110205B CN 105110205 B CN105110205 B CN 105110205B CN 201510470713 A CN201510470713 A CN 201510470713A CN 105110205 B CN105110205 B CN 105110205B
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- derrick crane
- door frame
- dismounting
- standard knot
- tower
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Abstract
The invention discloses a kind of reverse method for dismounting of derrick crane, in the case where derrick crane can not be dismantled normally, in balance arm of tower-type crane away from one directive wheel of setting at tower body 3m, one two rope suspension hook is set by directive wheel, constitute a jack machinism, jack machinism draws hoisting line by master winch, by head sheave to being arranged on counter-jib away from the directive wheel on the small, dedicated door frame at tower body 3m, hoisting line is contacted a movable pulley after directive wheel, lifting fag end, which is anchored at, is arranged on counter-jib away from the small, dedicated door frame crossbeam at tower body 3m, the standard knot disassembled using the jack machinism handling from group drops tower purpose to ground so as to reach.
Description
Technical field
Can not normally it torn open the invention belongs to construction machine equipment technical field, more particularly to a kind of derrick crane
Implement the method for dismounting when unloading to derrick crane.
Background technology
In construction, due to design alteration or arrange it is inconsiderate cause derrick crane construct after can not normally dismantle when
There is generation, once being accomplished by taking special method, high-altitude decomposition is carried out to derrick crane from special equipment, this
Not only wasting manpower and material resources, the duration cannot also ensure, and easily occur in unloading process security incident.
The content of the invention
The technical problems to be solved by the invention are to provide that a kind of time is short, cost is low, efficiency high derrick crane is inverse
To disassembly method.
The present invention is achieved through the following technical solutions：A kind of reverse method for dismounting of derrick crane, specific bag
Include following steps：
Step 1: setting self-control small, dedicated door frame above balance arm of tower-type crane counterweight, small, dedicated door frame uses 4
Group U bolt is connected with the major trough steel of counter-jib two, and small, dedicated door frame includes crossbeam, is processed with channel-section steel make-up, and crossbeam is provided with
One group of fixed pulley, first group of wire cable anchor, two symmetrical columns are processed with channel-section steel make-up, and two symmetrical diagonal braces use channel-section steel make-up
Processing, one group of steel wire rope anchor head；
Step 2: first dismantling former derrick crane hoisting line, hoisting line is drawn by master winch, passed around through head sheave to small-sized
On directive wheel on special door frame, then contact after one group of movable pulley passes around movable pulley as suspension hook hoisting line through directive wheel, lifting
Fag end is anchored on the anchor head being arranged on self-control small, dedicated door frame, at this moment constitutes new jack machinism；
Step 3: hanging one piece of counterweight with the jack machinism newly constituted, start raising action and hook up, counterweight raising 100mm
Stop, taking out counterweight lock pin, decentralization counterweight dismantles hoisting line, by derrick crane to ground after repeating 3 pieces of counterweights of dismounting
Former hoisting line passes around mode and passes around hoisting line again；
Step 4: hoisting line hangs certain weight body after passing around, standard knot moving cart makes jacking stock perpendicular to tower
Body, starts jacking apparatus and tower head is lifted off into tower body 50mm, observation alignment pin and positioning hole difference, it is determined that being fallen after balance with two 2t
Standard knot is fixed on tower crane trolley by chain；
Step 5: again dismantling former derrick crane hoisting line, self-control small, dedicated door frame is moved forward to away from tower body
At 3000mm, it is connected with 4 groups of U-shaped screws with the major trough steel of counter-jib two, then hoisting line is drawn by master winch, is passed around through head sheave to small
On directive wheel on the special door frame of type, then contact after one group of movable pulley passes around movable pulley as suspension hook hoisting line through directive wheel, rise
Weight fag end is anchored on the anchor head on self-control small, dedicated door frame, and jack machinism is constituted again；
Step 6: at this moment derrick crane arm before and after be in poised state, start jacking apparatus tower head jack-up is made it is most upper
Standard knot is held to depart from tower body, according to the difference of derrick crane model, release unit is also variant, there is support roller formula and suspension type,
The top standard knot, which departs from, is pushed out stock to platform is introduced after tower body, decline after two strokes, frock pin is filled it up with, in lifting
Arm and tower cap junction set a 2t jack, and the faller of the standard knot that disassembles close to tower body side is hung with jack, then
Action is hooked up with from faller on the outside of the standard knot that the hanging of the jack machinism of group is disassembled, tightening up to start after jack, is at this moment dismantled
The standard knot got off leaves introduction platform into angle of inclination, and it is naturally vertical to loosen standard knot after jack, decentralization standard knot to ground
A standard knot unloading process is completed, is repeated until the whole standard knots of dismounting, reach the purpose of dismounting derrick crane.
As preferred technical scheme, the small, dedicated door frame includes one from group counter-jib hoisting apparatus, from group balance
Arm hoisting apparatus includes master winch, flake down drum, and flake down drum two ends are equipped with rope blocking plate, wherein rope blocking plate the inner of inner side is provided with company
Fishplate bar, connecting plate is provided with mounting hole, and steel wire rope is connected by mounting hole with flake down drum, and the directive wheel is installed on before crossbeam
End, diagonal brace upper end connects with crossbeam, and the lower end of diagonal brace is installed on leg, and column is installed on the upper end both sides of leg.
As preferred technical scheme, column is open from 5t and slided using No. 12 channel-section steels, suspension hook using No. 14 channel-section steels, diagonal brace
Wheel, lifting anchor head is made using round steel.
One is hung as preferred technical scheme, at crane arm 35m is used to adjust matching somebody with somebody for crane arm and counter-jib balance
Weight.
The beneficial effects of the invention are as follows：The present invention is novel in design, easy to use, easily operated, using derrick crane certainly
Body power is smoothly dismantled to derrick crane, and this method is tested through practical application, is torn open than normal derrick crane
Discharging method is faster, safer.It is that the method eliminates dolly hanging with counterweight is reset repeatedly soon, balance-seeking hung under dismounting
The standard knot come, then hang the action of counterweight balance-seeking.Safety is that derrick crane begins during derrick crane is dismantled
Poised state is in eventually, and there is provided a kind of cost is low, the time is short, the dismounting of efficiency high derrick crane without rocking for smooth operation
Method, while also having expanded the dismounting mode of derrick crane, saves more than 100 ten thousand yuan of nonrecurring cost, with very strong practicality
Property, it is worthy to be popularized.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are 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 side view of special small door frame of the present invention；
Fig. 3 is the group jack machinism unloading counterweight schematic diagram certainly of the present invention；
Fig. 4 is the adjustment crane arm counter-jib equalization point schematic diagram of the present invention；
Fig. 5 is the jack machinism hanging standard knot schematic diagram of group certainly of the present invention；
Fig. 6 be the present invention put the standard knot schematic diagram disassembled；
1st, crossbeam；2nd, column；3rd, diagonal brace；4th, directive wheel；5th, suspension hook；6th, anchor head；7th, leg；8th, U bolt；
9th, master winch；10th, head sheave；11st, small-sized door frame is made by oneself；12nd, counterweight；13rd, jack；14th, standard knot.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
This specification（Including any accessory claim, summary and accompanying drawing）Disclosed in any feature, except non-specifically is chatted
State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature
It is an example in a series of equivalent or similar characteristics.
First, preparation
As depicted in figs. 1 and 2, make a set of small, dedicated door frame, small, dedicated door frame include crossbeam, column, diagonal brace,
Directive wheel, suspension hook, lifting anchor head, leg and U bolt composition, the balance weight that crossbeam root is dismantled is using No. 14 channel-section steels
Make-up is welded, and column selects 5t snatch blocks using No. 14 channel-section steels, diagonal brace using No. 12 channel-section steels, suspension hook, and hoisting line anchor head can be adopted
Made of garden steel.
2nd, fixed small, dedicated door frame
After preparation is performed, derrick crane hoisting line is dismantled, then the special door frame of special small will be made by oneself in outermost
It is fastenedly connected above the counterweight in face with 4 sets of U-shaped φ 20 two major trough steel of high-strength bolt and counter-jib, completes first time small gate
The fixation of frame.
3rd, hoisting line is passed around
As shown in figure 3, passing around hoisting line, hoisting line is drawn by master winch, by head sheave（Derrick crane first wife）To certainly
Directive wheel on small, dedicated door frame processed, then passed around by directive wheel and to sling weight fag end and be fixed on anchor head, constitute jack machinism.
4th, counterweight is dismantled
Using the jack machinism from group, with very heavy hanging counterweight, every piece of 3.6t of counterweight starts raising action, counterweight is hung
Rise and stop after 100mm, take out decentralization counterweight after the lock pin of counterweight and, to ground, dismantle 2 pieces of counterweights, it is therefore an objective to reduce inoperative shape
The larger tilting moment of state.
5th, leveling
The off working state tilting moment of tower crane is greatly reduced after 2 pieces of counterweights of dismounting, at this moment again former by derrick crane
Hoisting line passes around mode and passes around hoisting line again, and hoisting line hangs a section standard knot after passing around, one saves the weight 1000kg of standard knot,
Make stock perpendicular to tower body by the position of front and rear adjustment dolly, complete preliminary leveling, start jacking apparatus and tower head is lifted off tower
Body 50mm, observation alignment pin it is whether vertical with positioning hole, fine motion dolly adjustment make alignment pin it is vertical with positioning hole unanimously after, by tower
Head, which is fallen, fills whole frock pins, then leveling standard knot is fixed on dolly with jack, and dismounting hoisting line completes leveling procedure.
The 6th, small, dedicated door frame is set
The self-control small, dedicated door frame for having dismantled counterweight is moved to away from being adopted at tower body 3000mm with two major trough steel of counter-jib
It is fastenedly connected with 4 sets of U-shaped φ 20 two major trough steel of high-strength bolt and counter-jib.
7th, hoisting line is passed around
As shown in figure 5, passing around hoisting line, hoisting line is drawn by master winch, by head sheave（Derrick crane first wife）To certainly
Directive wheel on small, dedicated door frame processed, then suspension hook lifting fag end is passed around by directive wheel be fixed on anchor head, reformulate lifting
Mechanism.
The 8th, tower drops
As shown in fig. 6, the whole frock pins of dismounting standard knot, start jacking apparatus at this moment derrick crane arm before and after be in it is flat
Weighing apparatus state, starting jacking apparatus makes the top standard knot depart from tower body tower head jack-up, according to the difference of derrick crane model,
Release unit is also variant, there is support roller formula and a suspension type, and the top standard knot departs from that stock is pushed out after tower body is flat to introducing
Platform, declines after two strokes, fills it up with frock pin, and a 2t jack is set in crane arm and tower cap junction, is torn open with jack hanging
The standard knot unloaded down close to tower body side faller, then with attached from the outside of the standard knot that disassembles of the jack machinism of group hanging
Bar, tightens up to start after jack and hooks up action, and the standard knot at this moment disassembled leaves introduction platform into angle of inclination, loosens jack
Standard knot is naturally vertical afterwards, and decentralization standard knot to ground completes a standard knot unloading process, repeats said procedure until dismounting
Whole standard knots, reach the purpose of dismounting derrick crane.
It is mainly characterized by it is simple to operate, method novel and unique, use extensively, widened the dismounting side of derrick crane
Method, through practical application the method than normal disassembly method faster, it is more steady, safer, be that the method eliminates dolly repeatedly soon
Hang with counterweight is reset, balance-seeking hangs the standard knot disassembled, then hang the action of counterweight balance-seeking.Safety is in dismounting
During derrick crane derrick crane all the time be in poised state, smooth operation without rock there is provided a kind of cost it is low,
Time is short, efficiency high derrick crane method for dismounting, while also having expanded the dismounting mode of derrick crane, saves disposable
More than 100 ten thousand yuan of cost, with very strong practicality, is worthy to be popularized.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
The change or replacement expected without creative work, should all be included within the scope of the present invention.Therefore, it is of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (4)
1. the reverse method for dismounting of a kind of derrick crane, it is characterised in that specifically include following steps：Step 1: tower
Self-control small, dedicated door frame is set above crane balance arm counterweight, and small, dedicated door frame is led with 4 groups of U bolts and counter-jib two
Channel-section steel is connected, and small, dedicated door frame includes crossbeam, is processed with channel-section steel make-up, and crossbeam is provided with one group of fixed pulley, steel wire rope anchor head
One group, two symmetrical columns are processed, two symmetrical diagonal braces with channel-section steel make-up, are processed with channel-section steel make-up, one group of steel wire rope anchor head；
Step 2: first dismantling former derrick crane hoisting line, hoisting line is drawn by master winch, passed around through head sheave to small, dedicated
On directive wheel on door frame, then contact after one group of movable pulley passes around movable pulley as suspension hook hoisting line through directive wheel, lifting fag end
It is anchored on the anchor head being arranged on self-control small, dedicated door frame, at this moment constitutes new jack machinism；
Step 3: hanging one piece of counterweight with the jack machinism newly constituted, start raising action and hook up, counterweight raising 100mm stops,
Counterweight lock pin is taken out, decentralization counterweight dismantles hoisting line to ground after repeating 3 pieces of counterweights of dismounting, is risen by derrick crane original
Rope passes around mode and passes around hoisting line again again；
Step 4: hoisting line hangs certain weight body after passing around, standard knot moving cart makes jacking stock perpendicular to tower body, opened
Tower head is lifted off tower body 50mm, observation alignment pin and positioning hole difference by dynamic jacking apparatus, it is determined that will with two 2t jacks after balance
Standard knot is fixed on tower crane trolley；
Step 5: again dismantling former derrick crane hoisting line, self-control small, dedicated door frame is moved forward to away from tower body 3000mm,
It is connected with 4 groups of U-shaped screws with the major trough steel of counter-jib two, then hoisting line is drawn by master winch, is passed around through head sheave to small, dedicated door
On directive wheel on frame, then contact after one group of movable pulley passes around movable pulley as suspension hook hoisting line through directive wheel, lifting fag end anchor
Gu on the anchor head on self-control small, dedicated door frame, jack machinism is constituted again；
Step 6: at this moment derrick crane arm before and after is in poised state, starting jacking apparatus makes tower head jack-up topmost to mark
Quasi- section departs from tower body, and according to the difference of derrick crane model, release unit is also variant, there is support roller formula and suspension type, most upper
End standard knot, which departs from, is pushed out stock to platform is introduced after tower body, decline after two strokes, fill it up with frock pin, crane arm with
Tower cap junction sets a 2t jack, and the faller of the standard knot that disassembles close to tower body side is hung with jack, then with from
Faller on the outside of the standard knot that disassembles of jack machinism hanging of group, tightens up to start after jack and hooks up action, at this moment disassembles
Standard knot leave introduction platform into angle of inclination, it is naturally vertical to loosen standard knot after jack, and decentralization standard knot to ground is completed
One standard knot unloading process, is repeated until the whole standard knots of dismounting, reach the purpose of dismounting derrick crane.
2. a kind of reverse method for dismounting of derrick crane according to claim 1, it is characterised in that：The small, dedicated
Door frame includes one from group counter-jib hoisting apparatus, includes master winch, flake down from group counter-jib hoisting apparatus and rouses, flake down drum two ends are equal
Provided with rope blocking plate, wherein rope blocking plate the inner of inner side is provided with connecting plate, connecting plate is provided with mounting hole, and steel wire rope passes through mounting hole
It is connected with flake down drum, the directive wheel is installed on the front end of crossbeam, and diagonal brace upper end connects with crossbeam, and the lower end of diagonal brace is installed on branch
On pin, column is installed on the upper end both sides of leg.
3. a kind of reverse method for dismounting of derrick crane according to claim 1, it is characterised in that：Column uses No. 14
Channel-section steel, diagonal brace is using No. 12 channel-section steels, and suspension hook selects 5t snatch blocks, and lifting anchor head is made using round steel.
4. a kind of reverse method for dismounting of derrick crane according to claim 1, it is characterised in that：At crane arm 35m
Hanging one is used for the counterweight for adjusting crane arm and counter-jib balance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510470713.9A CN105110205B (en) | 2015-09-29 | 2015-09-29 | A kind of reverse method for dismounting of derrick crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510470713.9A CN105110205B (en) | 2015-09-29 | 2015-09-29 | A kind of reverse method for dismounting of derrick crane |
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| Publication Number | Publication Date |
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| CN105110205A CN105110205A (en) | 2015-12-02 |
| CN105110205B true CN105110205B (en) | 2017-09-19 |
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Families Citing this family (3)
| 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 | Reverse tower descending method for 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 |
Citations (5)
| 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 | Luffing jib 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 boom loading and unloading method and crane boom |
-
2015
- 2015-09-29 CN CN201510470713.9A patent/CN105110205B/en active Active
Patent Citations (5)
| 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 | Luffing jib 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 boom loading and unloading method and crane boom |
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| CN105110205A (en) | 2015-12-02 |
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