CN201762039U - Novel flat-top tower crane - Google Patents

Novel flat-top tower crane Download PDF

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Publication number
CN201762039U
CN201762039U CN2010205150271U CN201020515027U CN201762039U CN 201762039 U CN201762039 U CN 201762039U CN 2010205150271 U CN2010205150271 U CN 2010205150271U CN 201020515027 U CN201020515027 U CN 201020515027U CN 201762039 U CN201762039 U CN 201762039U
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CN
China
Prior art keywords
tower
draw piece
arm
crane
equilibrium arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010205150271U
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Chinese (zh)
Inventor
王积永
李蕾
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SHANDONG FUYOU CO Ltd
Original Assignee
SHANDONG FUYOU CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANDONG FUYOU CO Ltd filed Critical SHANDONG FUYOU CO Ltd
Priority to CN2010205150271U priority Critical patent/CN201762039U/en
Application granted granted Critical
Publication of CN201762039U publication Critical patent/CN201762039U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a novel flat-top tower crane which belongs to the technical field of construction machinery. The novel flat-top tower crane comprises a balance arm (7) and a crane arm (8) which are rigidly connected with a rotary tower body. The utility model is characterized in that: the top end of the rotary tower body is provided with a sheet type tower cap (3); the crane arm (8) is provided with at least one hoisting point; each hoisting point is connected with the top end of the sheet type tower cap (3) through a pulling member set (2); the balance arm (7) is connected with the top of the sheet type tower cap (3) through a pulling member I(4) connected with the back end of the balance arm (7); and a load balance mechanism which is connected with the balance arm (7) is provided below the balance arm. The novel flat-top tower crane has a simple structure and can satisfy a requirement of hoisting an object with weight that exceeds the rated-range hoisting capacity by the flat-top tower crane at a large amplitude part.

Description

A kind of novel tack tower machine
Technical field
The utility model relates to a kind of tower crane, and particularly a kind of improvement of tack tower machine belongs to the vehicle for construction technical field.
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 utility model provides a kind of tack tower machine that makes can surpass the technical scheme that moment is used, and 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.
The utility model is achieved by the following technical solution: 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 utility model is by the draw piece group many places suspension centre on the crane arm and chip tower cap to be linked together, and the equilibrium arm rear portion is connected with chip tower crown end by draw piece, 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, for example, for a suspension centre, when hoisting weight was p, the maximal bending moment of crane arm was by ql 2/ 2+pl becomes ql 2/ 8+pl/4; Suspension centre is many more, many more (wherein q is the deadweight uniform load of crane arm) that maximal bending moment reduces, this has improved the stressed of crane arm greatly, make crane arm can bear bigger load, and with equilibrium arm bonded assembly load equalization mechanism, can produce balancing torque, be used for the moment of flexure that compensation tower is experienced, improve the stressed of body of the tower, improved the load-carrying ability of complete machine greatly.
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.
Learn according to narration technique scheme, the beneficial effects of the utility model are: the utility model has been broken through the mentality of designing of 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 the utility model version, 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 the utility model version 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 utility model 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 utility model embodiment;
Fig. 2 is the structural representation of the utility model 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
Embodiment below in conjunction with accompanying drawing and indefiniteness is further described the utility model:
Embodiment
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 utility model 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 utility model adopt prior art, do not repeat them here.

Claims (5)

1. 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.
2. novel tack tower machine according to claim 1 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 with place ground-surface counterweight bonded assembly draw piece II (5).
3. novel tack tower machine according to claim 1 and 2 is characterized in that: described chip tower cap (3) is hinged with the slewing tower top.
4. novel tack tower machine according to claim 2, it is characterized in that: described draw piece II (5) is connected the rear portion of described equilibrium arm (7).
5. novel tack tower machine according to claim 1 and 2 is characterized in that: be provided with tightening device between described draw piece I (4) and the equilibrium arm (7).
CN2010205150271U 2010-09-02 2010-09-02 Novel flat-top tower crane Expired - Fee Related CN201762039U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010205150271U CN201762039U (en) 2010-09-02 2010-09-02 Novel flat-top tower crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010205150271U CN201762039U (en) 2010-09-02 2010-09-02 Novel flat-top tower crane

Publications (1)

Publication Number Publication Date
CN201762039U true CN201762039U (en) 2011-03-16

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Country Status (1)

Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101941653A (en) * 2010-09-02 2011-01-12 山东富友有限公司 Method for improving capacity of flat-head-type tower crane and new-type flat-head-type tower crane
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
CN104030174A (en) * 2014-05-12 2014-09-10 江苏大通重工有限公司 Foldable tower cap of miniature tower-type hoisting machinery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101941653A (en) * 2010-09-02 2011-01-12 山东富友有限公司 Method for improving capacity of flat-head-type tower crane and new-type flat-head-type tower crane
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
CN102633196B (en) * 2012-05-04 2013-10-09 山东富友有限公司 Method and device for changing prestress of lifting arm of flat-head tower crane
CN104030174A (en) * 2014-05-12 2014-09-10 江苏大通重工有限公司 Foldable tower cap of miniature tower-type hoisting machinery

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110316

Termination date: 20160902