CN102381643B - Tower crane - Google Patents

Tower crane Download PDF

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Publication number
CN102381643B
CN102381643B CN 201110350056 CN201110350056A CN102381643B CN 102381643 B CN102381643 B CN 102381643B CN 201110350056 CN201110350056 CN 201110350056 CN 201110350056 A CN201110350056 A CN 201110350056A CN 102381643 B CN102381643 B CN 102381643B
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China
Prior art keywords
arm
crane
drag
strut
turn
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CN 201110350056
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Chinese (zh)
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CN102381643A (en
Inventor
曾光
阳鹏
阳云华
朱俊辉
王曦鸣
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Priority to CN 201110350056 priority Critical patent/CN102381643B/en
Publication of CN102381643A publication Critical patent/CN102381643A/en
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Publication of CN102381643B publication Critical patent/CN102381643B/en
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Classifications

    • 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
    • B66C23/82Luffing gear
    • B66C23/821Bracing equipment for booms
    • B66C23/825Bracing equipment acting in horizontal direction

Abstract

The invention discloses a tower crane which comprises a slewing platform (1), as well as a lifting arm(2) and a balancing arm (3) which are fixed on the slewing platform (1); the lifting arm (2) and the balancing arm (3) respectively extend in the opposite directions from the slewing platform (1) along a first axis (X) approximately; the tower crane further comprises two support parts (4) and at least four guy cables (5); the two support parts (4) are rotationally hinged on the slewing platform (1) around the slewing platform (1), and respectively extend in the opposite directions from the slewing platform (1) along a second axle (Y) crossing the first axie (X) approximately; and each support part (4) is respectively connected with the lifting arm (2) and the balancing arm (3) through the two guy cables (5). The side-tipping prevention capability can be enhanced without increasing the self stiffness of the lifting arm.

Description

Tower crane
Technical field
The present invention relates to engineering machinery field, particularly, relate to a kind of tower crane.
Background technology
Tower crane comprises turn table and is fixed on crane arm and equilibrium arm on this turn table that described crane arm and equilibrium arm roughly extend respectively in the opposite direction along same axis from turn table.Because tower crane is usually in open space work such as building ground, so tower crane need to consider the impact that wind carries usually, and especially the impact on crane arm is larger.The crane arm of existing tower crane all is to resist wind by the rigidity of crane arm itself to carry, and it is very limited that the ability that wind carries is born in this design.Particularly for the overlength arm, in case when having paroxysmal strong gusts of wind to act on the crane arm, the rigidity of crane arm often is not enough to bear wind and carries, so that bending to a certain degree occurs in crane arm, if this moment, crane arm hung weight, weight gravity will be so that crane arm produces second order buckling, thereby so that crane arm roll.If improve the rigidity of crane arm by the modes such as size of crane arm itself, then not only can increase the weight of crane arm, simultaneously body of the tower, the miscellaneous part such as get off also must be gained in weight in order to increase load-carrying capacity, cause complete vehicle weight to increase, and have also increased the costs such as manufacturing, transportation.
Summary of the invention
The purpose of this invention is to provide a kind of tower crane, the rigidity that this tower crane need not to increase crane arm itself just can strengthen its anti-roll capability.
To achieve these goals, the invention provides a kind of tower crane, this tower crane comprises turn table and is fixed on crane arm and equilibrium arm on this turn table, described crane arm and equilibrium arm roughly extend respectively from described turn table in the opposite direction along first axle, wherein, this tower crane also comprises two strut members and at least four drag-lines, but described two strut member wraparounds turn platform to be hinged on the described turn table rotationally, and roughly extend respectively from described turn table in the opposite direction with the second axis that described first axle intersects on the edge, and each strut member is connected with equilibrium arm with described crane arm respectively by two described drag-lines separately.
Preferably, described crane arm, equilibrium arm and described two strut members are positioned at same plane.
Preferably, described crane arm and equilibrium arm are fixed on the top of described turn table, are provided with two installation portions to upper process on the described turn table, and described two strut members are hinged on respectively on these two installation portions.
Preferably, described first axle is mutually vertical with described the second axis.
Preferably, described two strut members are symmetrical with respect to described first axle.
Preferably, the length of described drag-line is substantially equal to the distance between this drag-line two ends point of connection, and when described crane arm and equilibrium arm were not subjected to lateral loading, described drag-line was not subjected to tensile force substantially.
Preferably, an end of described drag-line is connected to the end of described strut member, and the other end of described drag-line is connected to the end of described crane arm or equilibrium arm.
Preferably, described tower crane also comprises at least two drag-lines, and an end of these at least two drag-lines is fixed on the described strut member, and the other end is respectively fixed between the end and described turn table of described crane arm or equilibrium arm.
Preferably, it is symmetrical with respect to described first axle to be positioned at the described strut member of described first axle both sides and drag-line.
By technique scheme, crane arm is connected by drag-line with equilibrium arm and is connected with strut member.Thereby, when crane arm or equilibrium arm are subject to that wind carries (perhaps reaching some strength when wind carries) and when crooked, the drag-line of curved outside prevents tensioning that crane arm or equilibrium arm are further crooked and rolls preventing, thereby effectively strengthened the anti-roll capability of crane arm and equilibrium arm.In addition, because but two strut member wraparounds turn platform and are hinged on rotationally on the described turn table, it is subjected to pining down of at least four drag-lines, therefore the power that is subject to of strut member is the pressing force along strut member bearing of trend (direction of the second axis) basically, and strut member is larger in the rigidity of this direction, therefore can effectively reach its anti-effect that rolls.And such scheme need not to increase the rigidity of crane arm itself, therefore need not to increase the costs such as complete vehicle weight and manufacturing, transportation.
Other features and advantages of the present invention will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and consists of the part of specification sheets, is used from explanation the present invention with the following specific embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic top plan view according to the tower crane of one embodiment of the present invention;
Fig. 2 is the schematic side view of tower crane as shown in Figure 1.
Description of reference numerals
1 turn table; 2 crane arms;
3 equilibrium arms; The X first axle;
4 strut members; 5 drag-lines;
Y the second axis; 11 installation portions;
6 bodies of the tower; 7 tower caps.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that the specific embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
Extremely shown in Figure 2 such as Fig. 1, provide a kind of tower crane according to one embodiment of the present invention, this tower crane comprises turn table 1 and is fixed on crane arm 2 and equilibrium arm 3 on this turn table 1, described crane arm 2 and equilibrium arm 3 roughly extend respectively from described turn table 1 in the opposite direction along first axle X, wherein, this tower crane also comprises two strut members 4 and at least four drag-lines 5, but described two strut member 4 wraparounds turn platform 1 rotationally (preferably can around the rotation axis of turn table 1 rotationally) be hinged on the described turn table 1, and roughly extend in the opposite direction respectively from described turn table 1 along the second axis Y that intersects with described first axle X, each strut member 4 passes through two described drag-lines 5 separately is connected with equilibrium arm with described crane arm 2 respectively and is connected.
By technique scheme, crane arm 2 is connected with equilibrium arm respectively and is connected with strut member 4 by drag-line 5.Thereby, when crane arm 2 or equilibrium arm 3 are subject to that wind carries (perhaps reaching some strength when wind carries) and when crooked, the drag-line 5 of curved outside prevents tensioning that crane arm 2 or equilibrium arm 3 is further crooked and rolls preventing, thereby effectively strengthened the anti-roll capability of crane arm 2 and equilibrium arm 3.In addition, because but two strut member 4 wraparounds turn platform 1 and are hinged on rotationally on the described turn table 1, it is subjected to pining down of at least four drag-lines 5, therefore the power that is subject to of strut member 4 is the pressing force along strut member 4 bearing of trends (direction of the second axis Y) basically, and strut member 4 is larger in the rigidity of this direction, therefore can effectively reach its anti-effect that rolls.And such scheme need not to increase the rigidity of crane arm 2 itself, therefore need not to increase the costs such as complete vehicle weight and manufacturing, transportation.
In Fig. 2, the body of the tower 6 of Reference numeral 6 expression tower cranes, Reference numeral 7 expression tower caps, turn table 1 is arranged on the body of the tower 6, and tower cap 7 is arranged on turn table 1 top.
Preferably, described crane arm 2, equilibrium arm 3 and described two strut members 4 are positioned at same plane.Thereby strut member 4 only is subject to basically along the pressing force of strut member 4 bearing of trends (direction of the second axis Y), and can not be subject to lateral pressure, thereby can further improve its anti-roll capability.Can adopt various suitable modes to come so that crane arm 2, equilibrium arm 3 and described two strut members 4 are positioned at same plane.For example as depicted in figs. 1 and 2, when crane arm 2 and equilibrium arm 3 are fixed on the top of described turn table 1, can be provided with two installation portions 11 to upper process on the described turn table 1, described two strut members 4 are hinged on respectively on these two installation portions 11, thereby easily so that strut member 4 is positioned at identical height with crane arm 2 and equilibrium arm 3, thereby be positioned at same plane.
First axle X and the second axis Y can intersect mutually with various suitable angles, preferably, as shown in Figure 1, under the tower crane normal condition that wind-engaging does not carry, described first axle X is mutually vertical with described the second axis Y, and namely the bearing of trend of crane arm 2 and equilibrium arm 3 is mutually vertical with the bearing of trend of two strut members 4, thereby can optimize the stressing conditions of strut member 4, be conducive to equilibrium arm 3 and crane arm 2 maintenance balances, be difficult for rolling.
Preferably, as shown in Figure 1, two strut members 4 are symmetrical with respect to described first axle X.Thereby under the tower crane normal condition that wind-engaging does not carry, the triangle that is positioned at the triangle that is made of crane arm 2, drag-line 5 and strut member 4 of first axle X both sides and is made of equilibrium arm 3, drag-line 5 and strut member 4 is symmetrical with respect to first axle X, this enough optimizes the stressing conditions of strut member 4, be conducive to equilibrium arm 3 and crane arm 2 maintenance balances, be difficult for rolling.
Preferably, the length of described drag-line 5 is substantially equal to the distance between these drag-line 5 two ends point of connection, and when described crane arm 2 and equilibrium arm 3 were not subjected to lateral loading, described drag-line 5 was not subjected to tensile force substantially.Thereby under the tower crane normal condition that wind-engaging does not carry, drag-line 5 is not subjected to tensile force, can not affect the normal operation of crane arm 2 and equilibrium arm 3.In case and crane arm 2 or equilibrium arm 3 are subject to that wind carries (perhaps reaching some strength when wind carries) and when crooked, corresponding just tensioning of drag-line 5 reaches the anti-purpose that rolls.
Preferably, an end of described drag-line 5 is connected to strut member 4, and the other end is connected to the end of crane arm 2 or equilibrium arm 3.Thereby can increase the moment of drag-line 5 pulling crane arms 2 and equilibrium arm 3, realize better the anti-purpose that rolls.
Can also be connected with one or more drag-line 5 between strut member 4 and crane arm 2 and/or the equilibrium arm 3.Preferably, described tower crane also comprises at least two drag-lines 5, and an end of these at least two drag-lines 5 is fixed on the described strut member 4, and the other end is respectively fixed between the end and described turn table 1 of described crane arm 2 or equilibrium arm 3.That is to say, described strut member 4 is connected on described crane arm 2 and/or the equilibrium arm 3 by many described drag-lines 5, wherein an end of these many drag-lines 5 is fixed on the described strut member 4, the other end of these many drag-lines 5 be respectively fixed to described crane arm 2 and/or equilibrium arm 3 along on the diverse location of described first axle X.Thereby can further strengthen the anti-roll capability of crane arm 2 and/or equilibrium arm 3.In embodiment as shown in Figure 1, each strut member 4 is connected on the described crane arm 2 by two described drag-lines 5, and each strut member 4 is connected on the equilibrium arm 3 by a described drag-line 5.
More preferably, as shown in Figure 1, the described strut member 4 and the drag-line 5 that are positioned at described first axle X both sides are symmetrical with respect to described first axle X.Thereby optimize the stressing conditions of strut member 4, be conducive to equilibrium arm 3 and crane arm 2 maintenance balances, be difficult for rolling.
In embodiment shown in Figure 1, drag-line 5 is fixed on the end of strut member 4, certainly drag-line 5 also can be fixed on strut member 4 along on other positions of the second axis Y.Drag-line 5 and strut member 4 can be made by various suitable materials, for example steel.Drag-line 5 can be fixed on strut member 4, crane arm 2 or the equilibrium arm 3 in various suitable modes, such as passing through the fixed forms such as binding, riveted joint.
Below describe by reference to the accompanying drawings preferred implementation of the present invention in detail; but; the present invention is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the present invention is to the no longer separately explanation of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (9)

1. tower crane, this tower crane comprises turn table (1) and is fixed on crane arm (2) and equilibrium arm (3) on this turn table (1), described crane arm (2) and equilibrium arm (3) roughly extend respectively in the opposite direction along first axle (X) from described turn table (1), it is characterized in that, this tower crane also comprises two strut members (4) and four drag-lines (5), described two strut members (4) can wraparound turn platform (1) and are hinged on rotationally on the described turn table (1), and roughly extend respectively from described turn table (1) in the opposite direction with the second axis (Y) that described first axle (X) intersects on the edge, and each strut member (4) is connected 3 with described crane arm (2) with equilibrium arm by two described drag-lines (5) separately) be connected.
2. tower crane according to claim 1 is characterized in that, described crane arm (2), equilibrium arm (3) and described two strut members (4) are positioned at same plane.
3. tower crane according to claim 2, it is characterized in that, described crane arm (2) and equilibrium arm (3) are fixed on the top of described turn table (1), be provided with two installation portions (11) to upper process on the described turn table (1), described two strut members (4) are hinged on respectively on these two installation portions (11).
4. tower crane according to claim 1 is characterized in that, described first axle (X) is mutually vertical with described the second axis (Y).
5. tower crane according to claim 1 is characterized in that, described two strut members (4) are with respect to described first axle (X) symmetry.
6. tower crane according to claim 1, it is characterized in that, the length of described drag-line (5) is substantially equal to the distance between the point of connection of this drag-line (5) two ends, and when described crane arm (2) and equilibrium arm (3) when not being subjected to lateral loading, described drag-line (5) is not subjected to tensile force substantially.
7. the described tower crane of any one in 6 according to claim 1, it is characterized in that, one end of described drag-line (5) is connected to the end of described strut member (4), and the other end of described drag-line (5) is connected to the end of described crane arm (2) or equilibrium arm (3).
8. tower crane according to claim 7, it is characterized in that, described tower crane also comprises two drag-lines (5), one end of these two drag-lines (5) is fixed on the described strut member (4), and the other end is respectively fixed between the end and described turn table (1) of described crane arm (2) or equilibrium arm (3).
9. tower crane according to claim 8 is characterized in that, is positioned at the described strut member (4) of described first axle (X) both sides and drag-line (5) with respect to described first axle (X) symmetry.
CN 201110350056 2011-11-08 2011-11-08 Tower crane Active CN102381643B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110350056 CN102381643B (en) 2011-11-08 2011-11-08 Tower crane

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Application Number Priority Date Filing Date Title
CN 201110350056 CN102381643B (en) 2011-11-08 2011-11-08 Tower crane
PCT/CN2012/082346 WO2013067871A1 (en) 2011-11-08 2012-09-28 Tower crane

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CN102381643A CN102381643A (en) 2012-03-21
CN102381643B true CN102381643B (en) 2013-03-13

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WO (1) WO2013067871A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102381643B (en) * 2011-11-08 2013-03-13 中联重科股份有限公司 Tower crane
CN102701086A (en) * 2012-06-18 2012-10-03 上海三一科技有限公司 Method and device for improving lateral load capacity of arm support, and crane
CN102922280B (en) * 2012-11-15 2016-02-03 中联重科股份有限公司 The auxiliary installation pull bar of derrick runway girder installation method and application thereof
CN104555760B (en) * 2014-12-26 2016-07-27 长沙中联消防机械有限公司 Telescopic jib structure and engineering truck
DE102015003981A1 (en) * 2015-03-26 2016-09-29 Liebherr-Werk Biberach Gmbh Crane boom assembly

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US4159776A (en) * 1976-03-19 1979-07-03 Fmc Corporation Tower crane
KR20100004454U (en) * 2008-10-22 2010-04-30 제해진 Device for salvaging ship
CN101927967A (en) * 2009-06-19 2010-12-29 上海三一科技有限公司 Method and structure for controlling and reinforcing lateral stability of crawler crane boom
CN102040168A (en) * 2009-10-09 2011-05-04 埃英根利勃海尔-维克股份有限公司 Crane with a boom tensioning device
CN202322117U (en) * 2011-11-08 2012-07-11 中联重科股份有限公司 Tower crane

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US3923163A (en) * 1971-12-20 1975-12-02 Sam P Wallace Company Inc Crane
US4621741A (en) * 1985-12-23 1986-11-11 Boon Charles W Readily disassembleable portable roof hoist mounted on the roof of a building for lifting heavy products to the roof from below
US4712697A (en) * 1986-07-22 1987-12-15 The Marley Cooling Tower Company Lightweight tower crane boom for conveying pumped concrete
CN201882810U (en) * 2010-12-11 2011-06-29 郑州新大方重工科技有限公司 Tower crane provided with jib loading boom lateral stay cables
CN102381643B (en) * 2011-11-08 2013-03-13 中联重科股份有限公司 Tower crane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159776A (en) * 1976-03-19 1979-07-03 Fmc Corporation Tower crane
KR20100004454U (en) * 2008-10-22 2010-04-30 제해진 Device for salvaging ship
CN101927967A (en) * 2009-06-19 2010-12-29 上海三一科技有限公司 Method and structure for controlling and reinforcing lateral stability of crawler crane boom
CN102040168A (en) * 2009-10-09 2011-05-04 埃英根利勃海尔-维克股份有限公司 Crane with a boom tensioning device
CN202322117U (en) * 2011-11-08 2012-07-11 中联重科股份有限公司 Tower crane

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CN102381643A (en) 2012-03-21
WO2013067871A1 (en) 2013-05-16

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