CN101941653A - Method for improving capacity of flat-head-type tower crane and new-type flat-head-type tower crane - Google Patents

Method for improving capacity of flat-head-type tower crane and new-type flat-head-type tower crane Download PDF

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Publication number
CN101941653A
CN101941653A CN 201010270788 CN201010270788A CN101941653A CN 101941653 A CN101941653 A CN 101941653A CN 201010270788 CN201010270788 CN 201010270788 CN 201010270788 A CN201010270788 A CN 201010270788A CN 101941653 A CN101941653 A CN 101941653A
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CN
China
Prior art keywords
tower
arm
crane
draw piece
head
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Pending
Application number
CN 201010270788
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Chinese (zh)
Inventor
王积永
李蕾
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SHANDONG FUYOU CO Ltd
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SHANDONG FUYOU CO Ltd
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Publication date
Application filed by SHANDONG FUYOU CO Ltd filed Critical SHANDONG FUYOU CO Ltd
Priority to CN 201010270788 priority Critical patent/CN101941653A/en
Publication of CN101941653A publication Critical patent/CN101941653A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for improving the capacity of a flat-head-type tower crane, belonging to the technical field of construction machinery. The method is as follows: draw bar systems are arranged on a balance arm and a crane arm of the flat-head-type tower crane to lead the balance arm, the crane arm and the draw bar system to form a multi-span continuous overhanging beam structure; and a load balance mechanism connected with the balance arm is arranged below the balance arm. The method of the invention can satisfy the requirement that the suspending of the flat-head-type tower crane at large amplitude exceeds to the rated lifting capacity at the amplitude, and leads the flat-head tower crane to be used in ultra moment. The invention also discloses a novel flat-head-type tower crane which is characterized in that a blade-type tower hat is arranged on the top of a turning tower body; at least one suspending point is arranged on the crane arm; each suspending point is connected with the top of the blade-type tower hat through a pull piece group; the balance arm is connected with the top of the blade-type hat through the pull piece I connected with the rear end of the balance arm; and the load balance mechanism connected with the balance arm is arranged below the balance arm.

Description

A kind of method and novel tack tower machine that improves tack tower machine load-carrying ability
Technical field
The present invention relates to a kind of method that improves tower machine load-carrying ability, particularly improve the method for tack tower crane load-carrying ability, belong to the vehicle for construction technical field.The invention still further relates to a kind of later-model tack tower machine.
Background technology
Tack tower machine can reduce the operation height of group's tower because it is convenient to aerial Assembly ﹠Disassembly, reduces advantages such as construction cost, more and more receives an acclaim.
Existing tack tower crane is in order to guarantee the intensity of body of the tower, often adopt body of the tower constant force square method in the design, promptly outside biggest lifting capacity amplitude is sentenced, lift heavy+the weight of load-carrying dolly+suspension hook and the product of work range are fixed values, that is to say the increase along with work range, rated load weight is more and more littler.But sometimes need be on the engineering at the weight of locating significantly to lift by crane above this amplitude rated load weight, not only the intensity of body of the tower can not satisfy, and crane arm intensity can not satisfy.Though this working condition seldom, the tower machine that engineering company has to buy or lease big model satisfies requirement of engineering, thereby causes the waste of device resource.
Summary of the invention
At the above-mentioned limitation that exists in the prior art, the invention provides a kind of tack tower machine that makes and can surpass the technical scheme that moment is used, this scenario-frame is simple, can satisfy tack tower machine in the requirement of locating significantly to lift by crane above this amplitude rated load weight.
Method of the present invention is achieved by the following technical solution: a kind of method that improves tack tower machine load-carrying ability is characterized in that being provided with pull bar system and makes crane arm, equilibrium arm and pull bar system constitute the continuous overhanging beam structure of multispan on equilibrium arm and crane arm; Connected load equalization mechanism is arranged below equilibrium arm.
The present invention makes the equilibrium arm of tack tower machine and crane arm become the continuous overhanging beam structure of multispan by cantilever beam structure by pull bar system is set, make the strained condition of equilibrium arm and crane arm change, for example, for a suspension centre, when hoisting weight was p, the maximal bending moment of crane arm became ql2/8+pl/4 by ql2/2+pl; Suspension centre is many more, many more (wherein q is the deadweight uniform load of crane arm) that maximal bending moment reduces, and this has improved the stressed of crane arm greatly, makes crane arm can bear bigger load; And be located at load equalization mechanism below the equilibrium arm, and can produce balancing torque, be used for the moment of flexure that compensation tower is experienced, improved the stressed of body of the tower, improved the load-carrying ability of complete machine greatly.
The mechanism of load equalization described in the present invention be that an end is connected with equilibrium arm, the other end is fixed in ground or with place ground-surface counterweight bonded assembly draw piece.Equilibrium arm is connected with ground or ground counterweight by draw piece, utilizes the balancing torque of draw piece pulling force generation, reaches the purpose of balancing load.
The technical scheme that the tack tower machine of realization said method is adopted is: a kind of novel tack tower machine, comprise and rigidly connected equilibrium arm of slewing tower and crane arm, the slewing tower top is provided with chip tower cap, described crane arm is provided with at least one suspension centre, each suspension centre is connected with chip tower crown end by the draw piece group, described equilibrium arm is by being connected with chip tower crown end with its rear end bonded assembly draw piece I, and the equilibrium arm below is provided with connected load equalization mechanism.
The present invention links together many places suspension centre on the crane arm and chip tower cap by the draw piece group, make crane arm and equilibrium arm become the continuous overhanging beam structure of multispan by cantilever beam structure, thereby the strained condition of equilibrium arm and crane arm is changed, this has improved the stressed of crane arm and equilibrium arm greatly, make crane arm can bear bigger load, mechanism then can produce balancing torque with equilibrium arm bonded assembly load equalization, can significantly reduce the moment of flexure that body of the tower is subjected to.
Described load equalization mechanism can adopt an end to be connected with equilibrium arm, the other end is fixed in ground or with place ground-surface counterweight bonded assembly draw piece II.Equilibrium arm is connected with ground or ground counterweight by draw piece II, utilizes the balancing torque of the pulling force generation of draw piece II, reaches the purpose of balancing load.II fixes for ease of draw piece, can bury anchor bolt in advance on the ground, and when draw piece II adopted the mode of fixing with ground, the tower machine can not turn round.When draw piece II employing and ground counterweight ways of connecting, counterweight can be sling in case of necessity, and unbalanced moment is born by body of the tower, at this moment the tower machine can turn round, and has improved the flexibility ratio of tower machine when super moment is used, and when unloading suddenly, counterweight lands, and can not produce big back tilting moment.
For the moment of flexure that the active balance body of the tower is subjected to, available tightening device is with draw piece II and anchor bolt or counterweight tension.Draw piece II should guarantee that also draw piece has enough rigidity, and is excessive to avoid elongation, and the moment of flexure experienced of compensation tower effectively.Draw piece can adopt as round steel, square steel, band steel etc., between adopt bearing pin or high strength bolt to connect into sufficient length.
In order to adapt to different operating modes, described chip tower cap and slewing tower top are hinged, when not needing to lift by crane very heavy weight, but chip tower cap horizontal positioned, tower machine structure is the same with common tack tower machine, and the force way also tack tower machine with common is the same.
For the moment of flexure that the active balance body of the tower is subjected to, described draw piece II preferably is connected the rear portion of described equilibrium arm.
In order effectively to improve the stressed of equilibrium arm and crane arm, be provided with tightening device between described draw piece I and the equilibrium arm.
Narration to technique scheme is learnt, the invention has the beneficial effects as follows the mentality of designing that has broken through traditional tack tower machine, by pull bar system is set on the equilibrium arm of tower machine and crane arm, make equilibrium arm and crane arm become the continuous overhanging beam of multispan by cantilever beam structure, improved the load-carrying capacity of equilibrium arm and crane arm, and be located at load equalization mechanism below the equilibrium arm, and make the suffered moment of flexure of body of the tower reduce greatly, improved the stressed of body of the tower.Facts have proved that adopt the tack tower machine of version of the present invention, the hoisting moment of the common tack tower machine of the comparable same specification of its maximum hoisting moment improves 50%-70%; Secondly, the body of the tower of the tack tower machine of employing version of the present invention and the force-bearing situation of crane arm also are significantly improved, and have greatly improved the service life and the safety of tower machine.The present invention also helps saving equipment investment, and the tower machine that engineering company needn't buy or lease big model more separately satisfies requirement of engineering.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the structural representation of the present invention when not needing to lift by crane overweight article;
Among the figure, 1, body of the tower, 2, the draw piece group, 3, chip tower cap, 4, draw piece I, 5, draw piece II, 6, counterweight, 7, equilibrium arm, 8, crane arm, 9, draw piece II tightening device, 10, draw piece I tightening device.
The specific embodiment
The present invention is further illustrated below in conjunction with the embodiment of accompanying drawing and indefiniteness:
Embodiment 1
A kind of method that improves tack tower machine load-carrying ability, be pull bar system to be set make crane arm on the equilibrium arm of common tack tower machine and crane arm, equilibrium arm and pull bar system constitute the continuous overhanging beam structure of multispan, and below equilibrium arm, be provided with connected load equalization mechanism, this load equalization mechanism can adopt the mode of draw piece balance, promptly below equilibrium arm, establish connected draw piece, the other end of draw piece fixes on the ground or is connected with placing ground-surface counterweight, offset the part moment of flexure of body of the tower by the balancing torque that the draw piece pulling force produces, the stressed of body of the tower improved.And the continuous overhanging beam structure of multispan that crane arm, equilibrium arm and pull bar system constitute has also changed the force-bearing situation of the cantilever beam structure of original rigidly connected crane arm and equilibrium arm formation, and the continuous overhanging beam structure of multispan can be born bigger load than cantilever beam structure.When needing the tower machine on the engineering at the weight of locating significantly to lift by crane above this amplitude rated load weight, utilize common tack tower machine to adopt method of the present invention can satisfy the lifting requirement, engineering company needn't purchase the tower machine of bigger specification more in addition, has saved equipment investment.
Embodiment 2
As shown in drawings, a kind of novel tack tower machine, its body of the tower 1, equilibrium arm 7, crane arm 8 adopts the structure design of common tack tower machine, and equilibrium arm 7 and crane arm 8 are rigidly connected with the slewing tower at body of the tower 1 top.Be hinged with chip tower cap 3 on the slewing tower top, crane arm 8 is provided with one or more suspension centres, each suspension centre is connected with chip tower cap 3 tops by draw piece group 2, equilibrium arm 7 also is provided with tightening device 10 by being connected with chip tower cap 3 tops with its rear end bonded assembly draw piece I 4 between draw piece I 4 and the equilibrium arm 7.Equilibrium arm 7, crane arm 8, draw piece group 2, draw piece I 4, chip tower cap 3 constitute the continuous overhanging beam structure of multispan.Be provided with connected draw piece II 5 in equilibrium arm 7 lower rear, equilibrium arm 7 is connected with ground counterweight 6 by draw piece II 5, and draw piece II 5 forms load equalization mechanism with counterweight 6, is used for the moment of flexure that compensation tower is experienced.Moment of flexure for the active balance body of the tower is subjected to also is provided with tightening device 9 between draw piece II 5 and counterweight 6.Above-mentioned draw piece group 2, draw piece I 4, draw piece II 5 can adopt as round steel, square steel, band steel etc., between adopt bearing pin or high strength bolt to connect into sufficient length.
The present invention when not needing super moment to use, can fall chip tower cap 3 in use, made tower machine top be the level of state, and as shown in Figure 2, at this moment this tower machine and common tack tower machine are as broad as long.
When the super moment of needs is used, the tower machine is controlled degreeof turn along assigned direction, chip tower cap 3 is holded up, draw piece group 2, pull bar I 4 are connected with crane arm 8, equilibrium arm 7 and chip tower cap 3, make it to form the continuous overhanging beam structure of multispan, draw piece II 5 is fixed on equilibrium arm 7 lower edges, locate with bearing pin, preferably draw piece II 5 is fixed on equilibrium arm 7 ends, the lower end of draw piece II 5 is fixedly connected on the ground counterweight 6.When the super moment of needs is turned round, calculated the amplitude R of needs earlier by control system, beyond amplitude R, counterweight on the ground can be sling, and in the amplitude, counterweight is motionless.Carriage amplitude varying is arrived in the R, hoisting heavy, luffing is more in addition to amplitude R then, and counterweight is sling, and revolution then is turned back to the angle that needs, and luffing lands to object point then.
When not needing to turn round when super moment use, draw piece II 5 can directly be connected with ground fixture, and as burying anchor bolt on ground in advance underground, draw piece II 5 directly is connected with anchor bolt.
Other parts of the present invention adopt prior art, do not repeat them here.

Claims (6)

1. a method that improves tack tower machine load-carrying ability is characterized in that: pull bar system is set on equilibrium arm and crane arm makes crane arm, equilibrium arm and pull bar system constitute the continuous overhanging beam structure of multispan; Connected load equalization mechanism is arranged below equilibrium arm.
2. the method for raising tack tower machine load-carrying ability according to claim 1 is characterized in that: described load equalization mechanism be that an end is connected with equilibrium arm, the other end is fixed in ground or with place ground-surface counterweight bonded assembly draw piece.
3. novel tack tower machine, comprise and rigidly connected equilibrium arm of slewing tower (7) and crane arm (8), it is characterized in that: described slewing tower top is provided with chip tower cap (3), described crane arm (8) is provided with at least one suspension centre, each suspension centre is connected with chip tower cap (3) top by draw piece group (2), described equilibrium arm (7) is by being connected with chip tower cap (3) top with its rear end bonded assembly draw piece I (4), and equilibrium arm (7) below is provided with connected load equalization mechanism.
4. novel tack tower machine according to claim 3 is characterized in that: described load equalization mechanism be that an end is connected with equilibrium arm (7), the other end is fixed in ground or be positioned at ground-surface counterweight bonded assembly draw piece II (5).
5. according to claim 3 or 4 described novel tack tower machines, it is characterized in that: described chip tower cap (3) is hinged with the slewing tower top.
6. according to claim 3 or 4 described novel tack tower machines, it is characterized in that: be provided with tightening device between described draw piece I (4) and the equilibrium arm (7).
CN 201010270788 2010-09-02 2010-09-02 Method for improving capacity of flat-head-type tower crane and new-type flat-head-type tower crane Pending CN101941653A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102633196A (en) * 2012-05-04 2012-08-15 山东富友有限公司 Method and device for changing prestress of lifting arm of flat-head tower crane
CN102706433A (en) * 2012-06-19 2012-10-03 李春秀 Calibrating device for weighing machine
CN102942124A (en) * 2012-11-15 2013-02-27 中联重科股份有限公司 Tower crane
CN106946170A (en) * 2017-03-27 2017-07-14 山东以琳智能科技有限公司 A kind of crane arm Adaptable System of flat-top tower crane

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851767A (en) * 1970-02-13 1974-12-03 Richier Sa Tower cranes
DE3245511A1 (en) * 1982-12-09 1984-06-14 Dieter 7300 Esslingen Böhm Crane, in particular a tower slewing crane
CN1837011A (en) * 2006-04-20 2006-09-27 谭春阳 Self-balancing up-rotary type tower crane and operation control
CN101074087A (en) * 2007-06-12 2007-11-21 王生银 Self-raising tower crane
CN101343022A (en) * 2008-08-14 2009-01-14 山东富友有限公司 Tower crane load balance apparatus
CN201495051U (en) * 2009-08-24 2010-06-02 中昇建机(南京)重工有限公司 Crane jib for flat-top tower crane
CN201567164U (en) * 2009-06-13 2010-09-01 徐州建机工程机械有限公司 Large-span self-propelled tower crane
CN201762039U (en) * 2010-09-02 2011-03-16 山东富友有限公司 Novel flat-top tower crane

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851767A (en) * 1970-02-13 1974-12-03 Richier Sa Tower cranes
DE3245511A1 (en) * 1982-12-09 1984-06-14 Dieter 7300 Esslingen Böhm Crane, in particular a tower slewing crane
CN1837011A (en) * 2006-04-20 2006-09-27 谭春阳 Self-balancing up-rotary type tower crane and operation control
CN101074087A (en) * 2007-06-12 2007-11-21 王生银 Self-raising tower crane
CN101343022A (en) * 2008-08-14 2009-01-14 山东富友有限公司 Tower crane load balance apparatus
CN201567164U (en) * 2009-06-13 2010-09-01 徐州建机工程机械有限公司 Large-span self-propelled tower crane
CN201495051U (en) * 2009-08-24 2010-06-02 中昇建机(南京)重工有限公司 Crane jib for flat-top tower crane
CN201762039U (en) * 2010-09-02 2011-03-16 山东富友有限公司 Novel flat-top tower crane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102633196A (en) * 2012-05-04 2012-08-15 山东富友有限公司 Method and device for changing prestress of lifting arm of flat-head tower crane
CN102706433A (en) * 2012-06-19 2012-10-03 李春秀 Calibrating device for weighing machine
CN102942124A (en) * 2012-11-15 2013-02-27 中联重科股份有限公司 Tower crane
CN102942124B (en) * 2012-11-15 2015-02-11 中联重科股份有限公司 Tower crane
CN106946170A (en) * 2017-03-27 2017-07-14 山东以琳智能科技有限公司 A kind of crane arm Adaptable System of flat-top tower crane

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