WO2013067871A1 - Tower crane - Google Patents
Tower crane Download PDFInfo
- 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
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- WIPO (PCT)
- Prior art keywords
- boom
- tower crane
- axis
- balance arm
- cable
- Prior art date
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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.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Wind Motors (AREA)
Abstract
Disclosed is a tower crane, comprising a slewing platform (1), and a crane jib (2) and a counter jib (3) both fixed to the slewing platform (1), the crane jib (2) and the counter jib (3) extending from the slewing platform (1) respectively in opposite directions substantially along a first axis (X), wherein the tower crane also comprises two supports (4) and at least four cables (5), the two supports (4) being rotatably hinged to the slewing platform (1) such that said supports can rotate about the slewing platform (1), and extending from the slewing platform (1) respectively in opposite directions substantially along a second axis (Y) intersecting with the first axis (X), and each of the supports (4) being connected to the crane jib (2) and the counter jib (3) via two cables (5) respectively. The tower crane can enhance the anti-roll capability thereof without increasing the rigidity of the crane jib itself.
Description
塔式起重机 Tower crane
技术领域 Technical field
本发明涉及工程机械领域, 具体地, 涉及一种塔式起重机。 背景技术 The present invention relates to the field of construction machinery, and in particular to a tower crane. Background technique
塔式起重机包括回转平台以及固定在该回转平台上的起重臂和平衡 臂, 所述起重臂和平衡臂大致沿同一轴线从回转平台分别向相反的方向延 伸。 由于塔式起重机通常在建筑工地等露天场所工作, 因此塔式起重机通 常需要考虑风载的影响, 尤其对起重臂的影响更大。 现有的塔式起重机的 起重臂都是借助起重臂本身的刚度来抵御风载, 这种设计承受风载的能力 非常有限。 特别是对于超长臂来说, 一旦有突发性的强阵风作用在起重臂 上时, 起重臂的刚度往往不足以承受风载, 使得起重臂发生一定程度的弯 曲, 如果此时起重臂吊有重物, 重物重力将会使得起重臂产生二次弯曲, 从而使得起重臂发生侧倾。 如果通过起重臂本身的尺寸等方式提高起重臂 的刚度, 则不仅会增加起重臂的重量, 同时塔身、 下车等其他部件为了增 加承载能力也必须增加重量, 导致整车重量增加, 也增加了制造、 运输等 成本。 发明内容 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
本发明的目的是提供一种塔式起重机, 该塔式起重机无需增加起重臂 本身的刚度便能够增强其防侧倾能力。 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.
为了实现上述目的, 本发明提供一种塔式起重机, 该塔式起重机包括 回转平台以及固定在该回转平台上的起重臂和平衡臂, 所述起重臂和平衡 臂大致沿第一轴线从所述回转平台分别向相反的方向延伸, 其中, 该塔式
起重机还包括两个支撑件和至少四条拉索, 所述两个支撑件可绕回转平台 转动地铰接在所述回转平台上, 并且大致沿与所述第一轴线交叉的第二轴 线从所述回转平台分别向相反的方向延伸, 每个支撑件各自通过两条所述 拉索分别与所述起重臂和平衡臂连接。 In order to achieve the above object, 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, wherein the tower 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.
优选地, 所述起重臂、 平衡臂和所述两个支撑件位于同一平面内。 优选地, 所述起重臂和平衡臂固定在所述回转平台的上方, 所述回转 平台上设置有向上突起的两个安装部, 所述两个支撑件分别铰接在该两个 安装部上。 Preferably, the boom, the balance arm and the two supports are in the same plane. Preferably, 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. .
优选地, 所述第一轴线与所述第二轴线相互垂直。 Preferably, the first axis and the second axis are perpendicular to each other.
优选地, 所述两个支撑件相对于所述第一轴线对称。 Preferably, the two supports are symmetrical with respect to the first axis.
优选地, 所述拉索的长度基本上等于该拉索两端连接点之间的距离, 并且当所述起重臂和平衡臂未受侧向载荷时, 所述拉索基本不受张紧力。 Preferably, 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.
优选地, 所述拉索的一端连接到所述支撑件的末端, 所述拉索的另一 端连接到所述起重臂或平衡臂的末端。 Preferably, 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.
优选地, 所述塔式起重机还包括至少两条拉索, 该至少两条拉索的一 端固定到所述支撑件上, 另一端分别固定到所述起重臂或平衡臂的末端与 所述回转平台之间。 Preferably, 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.
优选地, 位于所述第一轴线两侧的所述支撑件和拉索相对于所述第一 轴线对称。 Preferably, the support and the cable on either side of the first axis are symmetrical with respect to the first axis.
通过上述技术方案, 起重臂和平衡臂分别通过拉索与支撑件连接。 从 而, 当起重臂或平衡臂受到风载 (或者当风载达到一定强度) 而弯曲时, 弯曲外侧的拉索将张紧而防止起重臂或平衡臂进一步弯曲以防止侧倾, 从 而有效地增强了起重臂和平衡臂的防侧倾能力。 此外, 由于两个支撑件可 绕回转平台转动地铰接在所述回转平台上, 其受至少四条拉索的牵制, 因 此支撑件受到的力基本上是沿着支撑件延伸方向 (第二轴线的方向) 的按 压力, 而支撑件在该方向的刚度较大, 因此能够有效地达到其防侧倾效果。
而且, 上述方案无需增加起重臂本身的刚度, 因此无需增加整车重量以及 制造、 运输等成本。 According to the above technical solution, the boom and the balance arm are respectively connected to the support through the cable. Thus, when the boom or balance arm is bent by the wind load (or when the wind load reaches a certain strength), 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. Furthermore, since 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. Moreover, 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.
本发明的其他特征和优点将在随后的具体实施方式部分予以详细说 明。 附图说明 Other features and advantages of the invention will be described in detail in the detailed description which follows. DRAWINGS
附图是用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与下面的具体实施方式一起用于解释本发明, 但并不构成对本发明的限制。 在附图中: The drawings are intended to provide a further understanding of the invention, and are in the In the drawing:
图 1是根据本发明的一种实施方式的塔式起重机的俯视示意图; 图 2是如图 1所示的塔式起重机的侧视示意图。 附图标记说明 1 is a schematic plan view of a tower crane according to an embodiment of the present invention; and FIG. 2 is a side elevational view of the tower crane shown in FIG. Description of the reference numerals
1 回转平台 起重臂; 1 swivel platform boom;
3 平衡臂; 第一轴线 3 balance arm; first axis
4 支撑件; 拉索; 4 support members; cable;
Y 第二轴线 安装部; Y second axis mounting portion;
6 塔身; 塔帽。 具体实施方式 6 tower body; tower cap. detailed description
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是, 此处所描述的具体实施方式仅用于说明和解释本发明, 并不用于限制本发 明。 The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are intended to be illustrative and not restrictive.
如图 1至图 2所示, 根据本发明的一种实施方式提供了一种塔式起重 机, 该塔式起重机包括回转平台 1 以及固定在该回转平台 1上的起重臂 2 和平衡臂 3,所述起重臂 2和平衡臂 3大致沿第一轴线 X从所述回转平台 1
分别向相反的方向延伸, 其中, 该塔式起重机还包括两个支撑件 4和至少 四条拉索 5, 所述两个支撑件 4可绕回转平台 1转动地(优选地可围绕回转 平台 1 的回转轴线转动地) 铰接在所述回转平台 1上, 并且大致沿与所述 第一轴线 X交叉的第二轴线 Y从所述回转平台 1分别向相反的方向延伸, 每个支撑件 4各自通过两条所述拉索 5分别与所述起重臂 2和平衡臂 3连 接。 As shown in FIGS. 1 to 2, 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.
通过上述技术方案, 起重臂 2和平衡臂 3分别通过拉索 5与支撑件 4 连接。 从而, 当起重臂 2或平衡臂 3受到风载 (或者当风载达到一定强度) 而弯曲时, 弯曲外侧的拉索 5将张紧而防止起重臂 2或平衡臂 3进一步弯 曲以防止侧倾, 从而有效地增强了起重臂 2和平衡臂 3的防侧倾能力。 此 夕卜, 由于两个支撑件 4可绕回转平台 1转动地铰接在所述回转平台 1上, 其受至少四条拉索 5的牵制,因此支撑件 4受到的力基本上是沿着支撑件 4 延伸方向 (第二轴线 Y的方向) 的按压力, 而支撑件 4在该方向的刚度较 大, 因此能够有效地达到其防侧倾效果。而且, 上述方案无需增加起重臂 2 本身的刚度, 因此无需增加整车重量以及制造、 运输等成本。 With the above technical solution, the boom 2 and the balance arm 3 are connected to the support 4 via the cable 5, respectively. Thus, when the boom 2 or the balance arm 3 is bent by the wind load (or when the wind load reaches a certain strength), 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. Furthermore, since 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. 4 The pressing force of the extending direction (the direction of the second axis Y), and the rigidity of the support member 4 in this direction is large, so that the anti-rolling effect can be effectively achieved. Moreover, the above solution does not need to increase the rigidity of the boom 2 itself, so there is no need to increase the weight of the entire vehicle and the costs of manufacturing, transportation, and the like.
在图 2中,附图标记 6表示塔式起重机的塔身 6,附图标记 7表示塔帽, 回转平台 1设置在塔身 6上, 塔帽 7设置在回转平台 1上方。 In Fig. 2, reference numeral 6 denotes a tower body of a tower crane 6, reference numeral 7 denotes a tower cap, and a swing platform 1 is disposed on the tower body 6, and the tower cap 7 is disposed above the swing platform 1.
优选地,所述起重臂 2、平衡臂 3和所述两个支撑件 4位于同一平面内。 从而支撑件 4基本上仅受到沿着支撑件 4延伸方向 (第二轴线 Y的方向) 的按压力, 而不会受到侧向压力, 从而能够进一步提高其防侧倾能力。 可 以采用各种适当的方式来使得起重臂 2、平衡臂 3和所述两个支撑件 4位于 同一平面内。 例如如图 1和图 2所示, 当起重臂 2和平衡臂 3固定在所述 回转平台 1 的上方时, 所述回转平台 1上可以设置有向上突起的两个安装 部 11, 所述两个支撑件 4分别铰接在该两个安装部 11上, 从而方便地使得 支撑件 4与起重臂 2和平衡臂 3位于相同的高度, 从而位于同一平面内。 Preferably, the boom 2, the balance arm 3 and the two supports 4 are in the same plane. Thereby, 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. 2, 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.
第一轴线 X和第二轴线 Y可以以各种适当的角度相互交叉, 优选地,
如图 1所示, 在塔式起重机不受风载的正常状态下, 所述第一轴线 X与所 述第二轴线 Y相互垂直, 即起重臂 2和平衡臂 3的延伸方向与两个支撑件 4的延伸方向相互垂直, 从而能够优化支撑件 4的受力情况, 有利于平衡臂 3和起重臂 2保持平衡, 不易侧倾。 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.
优选地, 如图 1所示, 两个支撑件 4相对于所述第一轴线 X对称。 从 而在塔式起重机不受风载的正常状态下, 位于第一轴线 X两侧的由起重臂 2、 拉索 5和支撑件 4构成的三角形以及由平衡臂 3、 拉索 5和支撑件 4构 成的三角形相对于第一轴线 X对称, 这够优化支撑件 4的受力情况, 有利 于平衡臂 3和起重臂 2保持平衡, 不易侧倾。 Preferably, as shown in Figure 1, the two support members 4 are symmetrical with respect to the first axis X. Thus, in the normal state in which the tower crane is not subjected to wind loads, the triangles formed by the boom 2, the cable 5 and the support 4 on both sides of the first axis X and the balance arm 3, the cable 5 and the support member 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.
优选地, 所述拉索 5的长度基本上等于该拉索 5两端连接点之间的距 离, 并且当所述起重臂 2和平衡臂 3未受侧向载荷时, 所述拉索 5基本不 受张紧力。 从而, 在塔式起重机不受风载的正常状态下, 拉索 5不受张紧 力, 不会影响起重臂 2和平衡臂 3的正常工作。而一旦起重臂 2或平衡臂 3 受到风载 (或者当风载达到一定强度) 而弯曲时, 相应的拉索 5便张紧, 达到防侧倾目的。 Preferably, 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. Thus, 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. When 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.
优选地, 所述拉索 5 的一端连接到支撑件 4, 另一端连接到起重臂 2 或平衡臂 3的末端。 从而能够增大拉索 5拉动起重臂 2和平衡臂 3的力矩, 更好地实现防侧倾目的。 Preferably, 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. Thereby, it is possible to increase the moment by which the cable 5 pulls the boom 2 and the balance arm 3, and the anti-rolling purpose is better achieved.
支撑件 4与起重臂 2和 /或平衡臂 3之间还可以连接有一条或多条拉索 5。 优选地, 所述塔式起重机还包括至少两条拉索 5, 该至少两条拉索 5的 一端固定到所述支撑件 4上, 另一端分别固定到所述起重臂 2或平衡臂 3 的末端与所述回转平台 1之间。 也就是说, 所述支撑件 4通过多条所述拉 索 5连接到所述起重臂 2和 /或平衡臂 3上, 其中该多条拉索 5的一端固定 到所述支撑件 4上, 该多条拉索 5的另一端分别固定到所述起重臂 2和 /或 平衡臂 3的沿所述第一轴线 X的不同位置上。 从而可以进一步增强起重臂 One or more cables 5 may be connected between the support member 4 and the boom 2 and/or the balance arm 3. Preferably, 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. Between the end and the swivel platform 1. That is, 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. Thereby further enhancing the boom
2和 /或平衡臂 3的防侧倾能力。 在如图 1所示实施方式中, 每个支撑件 4
通过两条所述拉索 5连接到所述起重臂 2上, 每个支撑件 4通过一条所述 拉索 5连接到平衡臂 3上。 2 and/or the anti-roll ability of the balance arm 3. In the embodiment shown in Figure 1, 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.
更优选地, 如图 1所示, 位于所述第一轴线 X两侧的所述支撑件 4和 拉索 5相对于所述第一轴线 X对称。 从而优化支撑件 4的受力情况, 有利 于平衡臂 3和起重臂 2保持平衡, 不易侧倾。 More preferably, as shown in Fig. 1, 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. Thereby, 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.
在图 1所示的实施方式中, 拉索 5固定在支撑件 4的末端, 当然拉索 5 也可以固定在支撑件 4的沿第二轴线 Y的其他位置上。 拉索 5和支撑件 4 可以由各种适当的材料制成, 例如钢。 拉索 5可以以各种适当的方式固定 到支撑件 4、 起重臂 2或平衡臂 3上, 例如通过绑定、 铆接等固定方式。 In the embodiment shown in Fig. 1, 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.
以上结合附图详细描述了本发明的优选实施方式, 但是, 本发明并不 限于上述实施方式中的具体细节, 在本发明的技术构思范围内, 可以对本 发明的技术方案进行多种简单变型, 这些简单变型均属于本发明的保护范 围。 The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.
另外需要说明的是, 在上述具体实施方式中所描述的各个具体技术特 征, 在不矛盾的情况下, 可以通过任何合适的方式进行组合。 为了避免不 必要的重复, 本发明对各种可能的组合方式不再另行说明。 It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not be further described in various possible combinations.
此外, 本发明的各种不同的实施方式之间也可以进行任意组合, 只要 其不违背本发明的思想, 其同样应当视为本发明所公开的内容。
In addition, any combination of various embodiments of the invention may be made, as long as it does not deviate from the idea of the invention, and should also be regarded as the disclosure of the invention.
Claims
1、 一种塔式起重机, 该塔式起重机包括回转平台 (1 ) 以及固定在该 回转平台 (1 ) 上的起重臂 (2) 和平衡臂 (3), 所述起重臂 (2) 和平衡臂 (3) 大致沿第一轴线 (X) 从所述回转平台 (1 ) 分别向相反的方向延伸, 其特征在于, 该塔式起重机还包括两个支撑件 (4) 和至少四条拉索 (5), 所述两个支撑件 (4) 可绕回转平台 (1 ) 转动地铰接在所述回转平台 (1 ) 上, 并且大致沿与所述第一轴线 (X) 交叉的第二轴线 (Y) 从所述回转平 台 (1 ) 分别向相反的方向延伸, 每个支撑件 (4) 各自通过两条所述拉索 (5) 分别与所述起重臂 (2) 和平衡臂 (3 ) 连接。 1. A tower crane comprising 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) extends from the rotary platform (1) in opposite directions substantially along the first axis (X), characterized in that the tower crane further comprises two support members (4) and at least four pulls a cable (5), the two support members (4) are rotatably hinged about the rotary platform (1) on the rotary platform (1) and substantially along a second cross with the first axis (X) The axis (Y) extends from the slewing platform (1) in opposite directions, and each support member (4) is respectively passed through the two of the cables (5) with the jib (2) and the balance arm (3) Connection.
2、根据权利要求 1所述的塔式起重机, 其特征在于, 所述起重臂(2)、 平衡臂 (3) 和所述两个支撑件 (4) 位于同一平面内。 2. Tower crane according to claim 1, characterized in that the lifting arm (2), the balancing arm (3) and the two supports (4) lie in the same plane.
3、 根据权利要求 2所述的塔式起重机, 其特征在于, 所述起重臂 (2) 和平衡臂 (3) 固定在所述回转平台 (1 ) 的上方, 所述回转平台 (1 ) 上设 置有向上突起的两个安装部 (11 ), 所述两个支撑件 (4) 分别铰接在该两 个安装部 (11 ) 上。 The tower crane according to claim 2, wherein the boom (2) and the balance arm (3) are fixed above the swing platform (1), and the swing platform (1) Two mounting portions (11) projecting upward are provided, and the two supporting members (4) are respectively hinged to the two mounting portions (11).
4、根据权利要求 1所述的塔式起重机,其特征在于,所述第一轴线(X) 与所述第二轴线 (Y) 相互垂直。 The tower crane according to claim 1, wherein the first axis (X) and the second axis (Y) are perpendicular to each other.
5、 根据权利要求 1所述的塔式起重机, 其特征在于, 所述两个支撑件 (4) 相对于所述第一轴线 (X) 对称。 The tower crane according to claim 1, characterized in that the two support members (4) are symmetrical with respect to the first axis (X).
6、 根据权利要求 1 所述的塔式起重机, 其特征在于, 所述拉索 (5) 的长度基本上等于该拉索 (5 ) 两端连接点之间的距离, 并且当所述起重臂 (2) 和平衡臂 (3) 未受侧向载荷时, 所述拉索 (5 ) 基本不受张紧力。 6. The tower crane according to claim 1, wherein the cable (5) The length 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.
7、 根据权利要求 1至 6中任意一项所述的塔式起重机, 其特征在于, 所述拉索 (5) 的一端连接到所述支撑件 (4) 的末端, 所述拉索 (5) 的另 一端连接到所述起重臂 (2) 或平衡臂 (3) 的末端。 The tower crane according to any one of claims 1 to 6, characterized in that one end of the cable (5) is connected to the end of the support (4), the cable (5) The other end is connected to the end of the boom (2) or balance arm (3).
8、 根据权利要求 7所述的塔式起重机, 其特征在于, 所述塔式起重机 还包括至少两条拉索 (5), 该至少两条拉索 (5) 的一端固定到所述支撑件 (4) 上, 另一端分别固定到所述起重臂 (2) 或平衡臂 (3) 的末端与所述 回转平台 (1 ) 之间。 The tower crane according to claim 7, wherein the tower crane further comprises at least two cables (5), one end of the at least two cables (5) being fixed to the support member (4) The other end is fixed to the end of the boom (2) or the balance arm (3) and the swing platform (1), respectively.
9、 根据权利要求 8所述的塔式起重机, 其特征在于, 位于所述第一轴 线 (X) 两侧的所述支撑件 (4) 和拉索 (5 ) 相对于所述第一轴线 (X) 对 称。 The tower crane according to claim 8, characterized in that the support member (4) and the cable (5) on both sides of the first axis (X) are opposite to the first axis ( X) Symmetrical.
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CN 201110350056 CN102381643B (en) | 2011-11-08 | 2011-11-08 | Tower crane |
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DE102015003981A1 (en) * | 2015-03-26 | 2016-09-29 | Liebherr-Werk Biberach Gmbh | Crane boom assembly |
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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 | Tower crane boom mounting method and auxiliary mounting pull rod applied by same |
CN104555760B (en) * | 2014-12-26 | 2016-07-27 | 长沙中联消防机械有限公司 | Telescopic boom structure and engineering vehicle |
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