WO2013067871A1 - Grue à tour - Google Patents

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Publication number
WO2013067871A1
WO2013067871A1 PCT/CN2012/082346 CN2012082346W WO2013067871A1 WO 2013067871 A1 WO2013067871 A1 WO 2013067871A1 CN 2012082346 W CN2012082346 W CN 2012082346W WO 2013067871 A1 WO2013067871 A1 WO 2013067871A1
Authority
WO
WIPO (PCT)
Prior art keywords
boom
tower crane
axis
balance arm
cable
Prior art date
Application number
PCT/CN2012/082346
Other languages
English (en)
Chinese (zh)
Inventor
曾光
阳鹏
阳云华
朱俊辉
王曦鸣
Original Assignee
中联重科股份有限公司
湖南中联重科专用车有限责任公司
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 中联重科股份有限公司, 湖南中联重科专用车有限责任公司 filed Critical 中联重科股份有限公司
Publication of WO2013067871A1 publication Critical patent/WO2013067871A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes 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
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/825—Bracing equipment acting in horizontal direction

Definitions

  • the present invention relates to the field of construction machinery, and in particular to a tower crane. Background technique
  • the tower crane includes a slewing platform and a jib and balance arm fixed to the slewing platform, the jib and the balance arm extending substantially in opposite directions from the slewing platform along the same axis. Since tower cranes usually work in open spaces such as construction sites, tower cranes often need to consider the effects of wind loads, especially on the boom.
  • the booms of existing tower cranes are designed to withstand the wind load by the stiffness of the boom itself. This design has very limited ability to withstand wind loads. Especially for the ultra-long arm, once a sudden strong gust is applied to the boom, the stiffness of the boom is often insufficient to withstand the wind load, causing the boom to bend to a certain extent.
  • the jib has a heavy object, and the gravity of the weight will cause the jib to bend twice, causing the jib to roll. If the rigidity of the boom is increased by the size of the boom itself, etc., not only will the weight of the boom be increased, but other components such as the tower body and the lower vehicle must also increase the weight in order to increase the load carrying capacity, resulting in an increase in the weight of the entire vehicle. It also increases the cost of manufacturing, transportation, etc. Summary of the invention
  • An object of the present invention is to provide a tower crane which can enhance its anti-rolling capability without increasing the rigidity of the boom itself.
  • the present invention provides a tower crane including a swing platform and a boom and a balance arm fixed to the swing platform, the boom and the balance arm being substantially along the first axis
  • the slewing platforms respectively extend in opposite directions
  • the crane also includes two support members and at least four cables that are rotatably hinged about the swing platform on the swing platform and substantially along the second axis that intersects the first axis
  • the slewing platforms each extend in opposite directions, and each of the supports is coupled to the jib and the balance arm by two of the cables, respectively.
  • the boom, the balance arm and the two supports are in the same plane.
  • the boom and the balance arm are fixed above the swing platform, and the swing platform is provided with two mounting portions protruding upward, and the two support members are respectively hinged on the two mounting portions. .
  • the first axis and the second axis are perpendicular to each other.
  • the two supports are symmetrical with respect to the first axis.
  • the length of the cable is substantially equal to the distance between the connection points of the two ends of the cable, and when the lifting arm and the balance arm are not subjected to the lateral load, the cable is substantially untensioned force.
  • one end of the cable is connected to the end of the support, and the other end of the cable is connected to the end of the boom or balance arm.
  • the tower crane further includes at least two cables, one end of the at least two cables is fixed to the support member, and the other end is fixed to an end of the lifting arm or the balance arm and the Between the slewing platforms.
  • the support and the cable on either side of the first axis are symmetrical with respect to the first axis.
  • the boom and the balance arm are respectively connected to the support through the cable.
  • the cable outside the bend will be tensioned to prevent the boom or balance arm from further bending to prevent roll, thereby effectively
  • the anti-roll ability of the boom and balance arm is enhanced.
  • the two support members are rotatably hinged about the swivel platform on the swivel platform, which is pinned by at least four cables, the force received by the support member is substantially along the direction in which the support member extends (the second axis The pressing force of the direction), and the rigidity of the support member in this direction is large, so that the anti-rolling effect can be effectively achieved.
  • the above solution does not need to increase the rigidity of the boom itself, so there is no need to increase the weight of the entire vehicle and the costs of manufacturing, transportation, and the like.
  • FIG. 1 is a schematic plan view of a tower crane according to an embodiment of the present invention.
  • FIG. 2 is a side elevational view of the tower crane shown in FIG. Description of the reference numerals
  • an embodiment of the present invention provides a tower crane including a swing platform 1 and a boom 2 and a balance arm 3 fixed to the swing platform 1.
  • the boom 2 and the balance arm 3 are substantially along the first axis X from the slewing platform 1 Extending in opposite directions, respectively, wherein the tower crane further comprises two support members 4 and at least four cables 5 which are rotatable about the swing platform 1 (preferably around the swing platform 1)
  • the pivot axis is rotatably coupled to the swivel platform 1 and extends substantially in opposite directions from the swivel platform 1 along a second axis Y intersecting the first axis X, each support member 4 passing through Two of the cables 5 are connected to the boom 2 and the balance arm 3, respectively.
  • the boom 2 and the balance arm 3 are connected to the support 4 via the cable 5, respectively.
  • the cable 5 on the outer side of the bend will be tensioned to prevent the boom 2 or the balance arm 3 from being further bent to prevent The roll is thereby effectively enhanced the anti-roll ability of the boom 2 and the balance arm 3.
  • the two support members 4 are rotatably hinged about the rotary table 1 on the rotary platform 1, which is pinned by at least four cables 5, the force received by the support member 4 is substantially along the support member.
  • reference numeral 6 denotes a tower body of a tower crane
  • reference numeral 7 denotes a tower cap
  • a swing platform 1 is disposed on the tower body 6
  • the tower cap 7 is disposed above the swing platform 1.
  • the boom 2, the balance arm 3 and the two supports 4 are in the same plane.
  • the support member 4 is substantially only subjected to the pressing force in the extending direction of the support member 4 (the direction of the second axis Y) without being subjected to the lateral pressure, so that the anti-rolling ability can be further improved.
  • the boom 2, the balance arm 3 and the two supports 4 can be positioned in the same plane in a variety of suitable manners. For example, as shown in FIG. 1 and FIG.
  • the swing platform 1 when the boom 2 and the balance arm 3 are fixed above the rotary platform 1, the swing platform 1 may be provided with two mounting portions 11 protruding upward, Two support members 4 are respectively hinged to the two mounting portions 11, so that the support member 4 is conveniently located at the same height as the boom 2 and the balance arm 3 so as to lie in the same plane.
  • the first axis X and the second axis Y may intersect each other at various suitable angles, preferably, As shown in FIG. 1, in a normal state in which the tower crane is not subjected to wind load, the first axis X and the second axis Y are perpendicular to each other, that is, the extending direction of the boom 2 and the balance arm 3 and two The extending direction of the support members 4 is perpendicular to each other, so that the force of the support member 4 can be optimized, which is advantageous for the balance arms 3 and the boom 2 to be balanced and not easy to roll.
  • the two support members 4 are symmetrical with respect to the first axis X.
  • the triangle formed by 4 is symmetrical with respect to the first axis X, which is sufficient to optimize the force of the support member 4, which is advantageous for the balance arm 3 and the boom 2 to be balanced and not easy to roll.
  • the length of the cable 5 is substantially equal to the distance between the connection points of the two ends of the cable 5, and when the boom 2 and the balance arm 3 are not subjected to lateral loads, the cable 5 Basically untensioned.
  • the cable 5 in the normal state in which the tower crane is not subjected to wind loads, the cable 5 is not subjected to tension and does not affect the normal operation of the boom 2 and the balance arm 3.
  • the boom 2 or the balance arm 3 is bent by the wind load (or when the wind load reaches a certain strength)
  • the corresponding cable 5 is tensioned to achieve the anti-rolling purpose.
  • one end of the cable 5 is connected to the support 4, and the other end is connected to the end of the boom 2 or the balance arm 3.
  • One or more cables 5 may be connected between the support member 4 and the boom 2 and/or the balance arm 3.
  • the tower crane further comprises at least two cables 5, one end of which is fixed to the support member 4, and the other end is fixed to the boom 2 or the balance arm 3, respectively.
  • the support member 4 is connected to the boom 2 and/or the balance arm 3 by a plurality of the cables 5, wherein one end of the plurality of cables 5 is fixed to the support member 4.
  • the other ends of the plurality of cables 5 are respectively fixed to different positions of the boom 2 and/or the balance arm 3 along the first axis X.
  • each support 4 Attached to the boom 2 by means of two of said cables 5, each support 4 is connected to the balance arm 3 by a pair of said cables 5.
  • the support member 4 and the cable 5 on both sides of the first axis X are symmetrical with respect to the first axis X.
  • the force of the support member 4 is optimized, which is advantageous for the balance arm 3 and the boom 2 to be balanced and not easy to roll.
  • the cable 5 is fixed to the end of the support member 4, and of course the cable 5 can be fixed at other positions of the support member 4 along the second axis Y.
  • the cable 5 and the support member 4 can be made of various suitable materials, such as steel.
  • the cable 5 can be attached to the support 4, the boom 2 or the balance arm 3 in any suitable manner, for example by means of binding, riveting or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Wind Motors (AREA)

Abstract

L'invention porte sur une grue à tour, laquelle grue comprend une plateforme de pivotement (1), et une flèche de grue (2) et un bras centralisateur (3), tous deux fixés à la plateforme de pivotement (1), la flèche de grue (2) et la bras centralisateur (3) s'étendant à partir de la plateforme de pivotement (1) respectivement dans des directions opposées sensiblement le long d'un premier axe X, la grue à tour comprenant également deux supports (4) et au moins quatre câbles (5), les deux supports (4) étant aptes à être articulés de façon à pouvoir tourner par rapport à la plateforme de pivotement (1) autour de la plateforme de pivotement (1), et s'étendant à partir de la plateforme de pivotement (1) respectivement dans des directions opposées sensiblement le long d'un second axe (Y) coupant le premier axe (X), et chacun des supports (4) étant relié à la flèche de grue (2) et au bras centralisateur (3) par l'intermédiaire de deux câbles (5), respectivement. La grue à tour peut améliorer sa capacité anti-roulis sans accroître la rigidité de la flèche de grue elle-même.
PCT/CN2012/082346 2011-11-08 2012-09-28 Grue à tour WO2013067871A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110350056.6 2011-11-08
CN 201110350056 CN102381643B (zh) 2011-11-08 2011-11-08 塔式起重机

Publications (1)

Publication Number Publication Date
WO2013067871A1 true WO2013067871A1 (fr) 2013-05-16

Family

ID=45821550

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/082346 WO2013067871A1 (fr) 2011-11-08 2012-09-28 Grue à tour

Country Status (2)

Country Link
CN (1) CN102381643B (fr)
WO (1) WO2013067871A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015003981A1 (de) * 2015-03-26 2016-09-29 Liebherr-Werk Biberach Gmbh Kranauslegervorrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102381643B (zh) * 2011-11-08 2013-03-13 中联重科股份有限公司 塔式起重机
CN102701086A (zh) * 2012-06-18 2012-10-03 上海三一科技有限公司 提高臂架侧向载荷能力的方法、装置和起重机
CN102922280B (zh) * 2012-11-15 2016-02-03 中联重科股份有限公司 塔机起重臂安装方法及其应用的辅助安装拉杆
CN104555760B (zh) * 2014-12-26 2016-07-27 长沙中联消防机械有限公司 伸缩臂架结构和工程车辆

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101927967A (zh) * 2009-06-19 2010-12-29 上海三一科技有限公司 履带起重机臂架侧向稳定性控制和加强的方法及其结构
CN201882810U (zh) * 2010-12-11 2011-06-29 郑州新大方重工科技有限公司 设置有起重臂侧向斜拉索的塔式起重机
CN102381643A (zh) * 2011-11-08 2012-03-21 中联重科股份有限公司 塔式起重机
CN202322117U (zh) * 2011-11-08 2012-07-11 中联重科股份有限公司 塔式起重机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1073562B (it) * 1976-03-19 1985-04-17 Fmc Corp Perfezionamento nelle gru a torre
KR20100004454U (ko) * 2008-10-22 2010-04-30 제해진 선양기
DE102009048846A1 (de) * 2009-10-09 2011-04-21 Liebherr-Werk Ehingen Gmbh Kran

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN101927967A (zh) * 2009-06-19 2010-12-29 上海三一科技有限公司 履带起重机臂架侧向稳定性控制和加强的方法及其结构
CN201882810U (zh) * 2010-12-11 2011-06-29 郑州新大方重工科技有限公司 设置有起重臂侧向斜拉索的塔式起重机
CN102381643A (zh) * 2011-11-08 2012-03-21 中联重科股份有限公司 塔式起重机
CN202322117U (zh) * 2011-11-08 2012-07-11 中联重科股份有限公司 塔式起重机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015003981A1 (de) * 2015-03-26 2016-09-29 Liebherr-Werk Biberach Gmbh Kranauslegervorrichtung

Also Published As

Publication number Publication date
CN102381643B (zh) 2013-03-13
CN102381643A (zh) 2012-03-21

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