WO2013139116A1 - Arm joint for truss arm, truss arm, and crane with truss arm - Google Patents

Arm joint for truss arm, truss arm, and crane with truss arm Download PDF

Info

Publication number
WO2013139116A1
WO2013139116A1 PCT/CN2012/081941 CN2012081941W WO2013139116A1 WO 2013139116 A1 WO2013139116 A1 WO 2013139116A1 CN 2012081941 W CN2012081941 W CN 2012081941W WO 2013139116 A1 WO2013139116 A1 WO 2013139116A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
truss
joint
truss arm
disposed
Prior art date
Application number
PCT/CN2012/081941
Other languages
French (fr)
Chinese (zh)
Inventor
詹纯新
刘权
高一平
牟江涛
钟兴华
邓志燕
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
Priority to CN201210075067.2A priority Critical patent/CN102530745B/en
Priority to CN201210075067.2 priority
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 WO2013139116A1 publication Critical patent/WO2013139116A1/en

Links

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
    • B66C23/64Jibs
    • B66C23/70Jibs constructed of sections adapted to be assembled to form jibs or various lengths

Abstract

An arm joint for a truss arm, a truss arm, and a crane with a truss arm. The arm joint (1) for a truss arm comprises an arm joint body (10), a top connection structure (12) disposed on the top of the arm joint body (10), and a bottom connection structure (14) disposed on the bottom of the arm joint body (10), the arm joint body (10) being a truss structure and having an extending axis. The arm joint (1) for a truss arm further comprises pull plates (16) disposed on two sides of the arm joint body (10), the pull plate (16) extends from the upper part to the lower part of the arm joint body (10), and the extending direction is almost parallel to the extending axis of the arm joint body (10). The truss arm can bear pressure and tension.

Description

桁架臂臂节, 桁架臂和具有该桁架臂的起重机  Truss arm boom, truss arm and crane with the truss arm
技术领域  Technical field
本发明是关于重型机械领域, 且特别是关于一种桁架臂臂节, 桁架臂 和具有该桁架臂的起重机。 背景技术  This invention relates to the field of heavy machinery, and more particularly to a truss arm section, a truss arm and a crane having the truss arm. Background technique
起重机的吊臂结构分为桁架式吊臂, 以及箱形伸縮式吊臂。  The crane boom structure is divided into a truss type boom and a box-shaped telescopic boom.
桁架式吊臂主要应用于履带式起重机, 以及环轨式起重机等, 其优点 是结构简单, 起重量大, 接地比小, 易于维护。  The truss type boom is mainly used in crawler cranes and ring-type cranes. Its advantages are simple structure, large lifting capacity, small grounding ratio and easy maintenance.
但是, 现有的桁架式吊臂, 即桁架臂大多数情况下用来承受压力, 而 不倾向于承受拉力。 因此, 采用常用的桁架臂式起重机须配置桅杆, 以及 拉板, 将桅杆、 拉板与桁架臂配置成三角形, 由拉板来承受拉力, 此时桁 架臂基本承受压力。  However, existing truss booms, i.e., truss arms, are used to withstand pressure in most cases and do not tend to withstand tension. Therefore, the conventional truss-arm crane is required to be equipped with a mast and a pull plate, and the mast, the pull plate and the truss arm are arranged in a triangular shape, and the pull plate is subjected to the pulling force, and the truss arm is basically subjected to the pressure.
并且, 随着起重机起重能力的增加, 需要增大桁架臂的截面面积以保 证受力, 而桁架臂的截面增大势必引起桁架臂自重的增加, 又会影响起重 性能。 发明内容  Moreover, as the lifting capacity of the crane increases, the cross-sectional area of the truss arm needs to be increased to ensure the force, and the increase in the cross-section of the truss arm tends to cause an increase in the self-weight of the truss arm, which in turn affects the lifting performance. Summary of the invention
针对上述问题, 本发明的目的是提供一种桁架臂臂节, 该桁架臂臂节 组成的桁架臂既可以承受压力, 也可以承受拉力。  In view of the above problems, it is an object of the present invention to provide a truss arm section which can be subjected to both pressure and tensile forces.
本发明的另一目的是提供一种桁架臂, 该桁架臂既可以承受压力, 也 可以承受拉力。  Another object of the present invention is to provide a truss arm that can withstand both pressure and tension.
本发明的第三个目的是提供一种起重机, 该起重机的桁架臂既可以承 受压力, 也可以承受拉力。 本发明提供一种桁架臂臂节, 包括臂节体, 设置在所述臂节体顶部的 顶部连接结构, 以及设置在所述臂节体底部的底部连接结构, 所述臂节体 是桁架结构, 所述臂节体具有延伸轴线, 所述桁架臂臂节还包括设置在所 述臂节体两侧的拉板, 所述拉板从所述臂节体上部延伸到其下部, 其延伸 方向与所述臂节体的延伸轴线大致平行。 A third object of the present invention is to provide a crane whose truss arm can withstand both pressure and tension. The invention provides a truss arm arm joint, comprising an arm joint body, a top joint structure disposed at the top of the arm joint body, and a bottom joint structure disposed at the bottom of the arm joint body, the arm joint body being a truss structure The arm joint body has an extension axis, and the truss arm arm joint further includes a pull plate disposed on two sides of the arm joint body, the pull plate extending from an upper portion of the arm joint body to a lower portion thereof, and an extending direction thereof It is substantially parallel to the axis of extension of the arm joint.
在本发明的一个实施例中, 前述的拉板在所述臂节体两侧对称设置。 在本发明的一个实施例中, 在前述的臂节体两侧各设置至少一对拉板, 在各对拉板上还设有使两块拉板之间保持一定间距的定位件。  In an embodiment of the invention, the aforementioned pull plates are symmetrically disposed on both sides of the arm body. In an embodiment of the present invention, at least one pair of pull plates are disposed on each side of the arm body, and a positioning member for maintaining a certain distance between the two pull plates is further disposed on each pair of pull plates.
在本发明的一个实施例中, 前述的臂节体是由弦杆, 设置在所述弦杆 之间的若干腹杆, 以及倾斜设置在所述弦杆和腹杆之间的若干斜腹杆形成 的桁架结构, 所述桁架臂臂节还包括固定件, 各对拉板分别通过所述固定 件固定在所述臂节体的腹杆上。  In an embodiment of the present invention, the foregoing arm body is a chord, a plurality of webs disposed between the chords, and a plurality of slanting webs disposed between the chord and the webs The formed truss structure further includes a fixing member, and each pair of pulling plates is respectively fixed on the web of the arm joint body by the fixing member.
在本发明的一个实施例中, 在前述的拉板上端或者下端还设有拉板连 接件, 所述拉板连接件一端与所述拉板的该上端或者下端铰接连接。  In an embodiment of the invention, a pull plate connector is further provided at the upper end or the lower end of the pull plate, and one end of the pull plate connector is hingedly connected to the upper end or the lower end of the pull plate.
本发明还提供一种桁架臂, 包括若干桁架臂臂节, 各所述桁架臂臂节 首尾相接, 所述桁架臂臂节是前述的桁架臂臂节, 各所述桁架臂臂节的臂 节体通过所述顶部连接结构, 以及底部连接结构首尾相接, 各所述桁架臂 臂节的拉板首尾相接。  The present invention also provides a truss arm comprising a plurality of truss arm sections, each of the truss arm sections being connected end to end, the truss arm section being the aforementioned truss arm section, and the arms of each of the truss arms The joint body is connected end to end through the top joint structure, and the bottom joint structure, and the pull plates of each of the truss arm joints are connected end to end.
在本发明的一个实施例中, 前述的相邻桁架臂臂节的拉板通过销轴铰 接连接。  In one embodiment of the invention, the aforementioned pull plates of adjacent truss arm sections are hingedly coupled by pins.
在本发明的一个实施例中, 前述的相邻桁架臂臂节的各弦杆末端的端 面对接, 形成可承受压力的接触面。  In one embodiment of the invention, the ends of the chord ends of the adjacent truss arm sections are abutted to form a pressure-bearing contact surface.
在本发明的一个实施例中, 前述的桁架臂的若干桁架臂臂节的各组顺 序连接的拉板处于拉伸状态的长度小于顺序连接的臂节体处于拉伸状态的 长度, 并且顺序连接的桁架臂臂节的臂节体在互相接触时的长度小于拉伸 状态的长度。 本发明还提供一种起重机, 包括桁架臂, 位于所述桁架臂顶端的主臂 顶端连接件, 以及位于所述桁架臂底端的起重机配重, 所述桁架臂是前述 的桁架臂, 位于所述桁架臂顶端的桁架臂臂节的拉板顶端与主臂顶端连接 件铰接连接, 位于所述桁架臂底端的桁架臂臂节的拉板底端与起重机配重 铰接连接。 In an embodiment of the present invention, each of the plurality of truss arm sections of the truss arm is in a stretched state in a stretched state having a length smaller than a length in which the sequentially connected arm sections are in a stretched state, and sequentially connected The length of the arm joints of the truss arm joints when they are in contact with each other is smaller than the length of the stretched state. The present invention also provides a crane including a truss arm, a main boom top end member at a top end of the truss arm, and a crane counterweight at a bottom end of the truss arm, the truss arm being the aforementioned truss arm, located at the The top end of the truss arm section of the truss arm is hingedly connected to the main arm top connecting piece, and the bottom end of the truss arm section at the bottom end of the truss arm is hingedly connected with the crane weight.
本发明的有益效果是, 采用本发明实施例的桁架臂臂节, 桁架臂和具 有该桁架臂的起重机, 采用两侧多条拉板并行提供配重提升拉力, 使该桁 架臂既可以承受压力, 也能够提供拉力, 并且可以在起重能力不变的前提 下, 有效地减小臂节体桁架结构尺寸, 并且降低臂节体桁架结构的选材规 格和强度要求; 桁架臂承压时通过接触面提供支撑力, 更好地利用了桁架 臂的结构特性。  The utility model has the beneficial effects that the truss arm section of the embodiment of the invention, the truss arm and the crane having the truss arm use multiple pulling plates on both sides to provide the counterweight lifting tension in parallel, so that the truss arm can withstand the pressure , can also provide tensile force, and can effectively reduce the size of the boom truss structure under the premise of the lifting capacity, and reduce the material specification and strength requirements of the ganglion truss structure; The surface provides support for better utilization of the structural characteristics of the truss arms.
上述说明仅是本发明技术方案的概述, 为了能够更清楚了解本发明的 技术手段, 而可依照说明书的内容予以实施, 并且为了让本发明的上述和 其它目的、 特征和优点能够更明显易懂, 以下特举实施例, 并配合附图, 详细说明如下。 附图说明  The above description is only an overview of the technical solutions of the present invention, and the technical means of the present invention can be more clearly understood, and can be implemented in accordance with the contents of the specification, and the above and other objects, features and advantages of the present invention can be more clearly understood. The following specific embodiments are described in detail below with reference to the accompanying drawings. DRAWINGS
图 1是本发明较佳实施例的桁架臂臂节的主视结构示意图。  BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view showing the truss arm section of a preferred embodiment of the present invention.
图 2是本发明较佳实施例的桁架臂臂节的左视结构示意图。  2 is a schematic left side view of a truss arm section according to a preferred embodiment of the present invention.
图 3是本发明较佳实施例的桁架臂臂节的连接结构示意图。  3 is a schematic view showing the connection structure of a truss arm arm joint according to a preferred embodiment of the present invention.
图 4是本发明较佳实施例的桁架臂的结构示意图。  4 is a schematic structural view of a truss arm according to a preferred embodiment of the present invention.
图 5是本发明另一实施例的桁架臂的主视结构示意图。  Fig. 5 is a front elevational view showing the truss arm of another embodiment of the present invention.
图 6是图 5中的桁架臂的左视结构示意图。 具体实施方式  Figure 6 is a schematic left side view of the truss arm of Figure 5. detailed description
为更进一歩阐述本发明为达成预定发明目的所采取的技术手段及功 效, 以下结合附图及较佳实施例, 对依据本发明提出的桁架臂臂节, 桁架 臂和具有该桁架臂的起重机的具体实施方式、 结构、 特征及其功效, 详细 说明如下: To further explain the technical means and work taken by the present invention for achieving the intended purpose of the invention. The specific embodiments, structures, features and functions of the truss arm section, the truss arm and the crane having the truss arm according to the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments as follows:
有关本发明的前述及其它技术内容、 特点及功效, 在以下配合参考图 式的较佳实施例的详细说明中将可清楚呈现。 通过具体实施方式的说明, 当可对本发明为达成预定目的所采取的技术手段及功效得以更加深入且具 体的了解, 然而所附图式仅是提供参考与说明之用, 并非用来对本发明加 以限制。  The foregoing and other technical features, features, and advantages of the present invention will be apparent from The technical means and functions of the present invention for achieving the intended purpose can be more deeply and specifically understood by the description of the embodiments. However, the drawings are only for reference and description, and are not intended to be used for the present invention. limit.
请参见图 1和图 2所示, 本发明较佳实施例的桁架臂臂节 1包括臂节 体 10, 设置在臂节体 10顶部的顶部连接结构 12, 设置在臂节体 10底部的 底部连接结构 14, 以及设置在臂节体 10两侧的拉板 16。  Referring to Figures 1 and 2, the truss arm section 1 of the preferred embodiment of the present invention includes an arm section 10, a top connecting structure 12 disposed at the top of the arm section 10, and a bottom portion at the bottom of the arm section 10. The connecting structure 14 and the pull plate 16 disposed on both sides of the arm joint body 10.
臂节体 10是由四根弦杆 102, 设置在弦杆 102之间的若干腹杆 103, 以及倾斜设置在弦杆 102和腹杆 103之间的若干斜腹杆 104固定连接形成 的桁架结构。 臂节体 10具有延伸轴线 (图未示), 该延伸轴线即为臂节体 10所有横截面的中心组成的轨迹。 弦杆 102可以是管材、 角钢等。  The arm joint body 10 is composed of four chords 102, a plurality of webs 103 disposed between the chords 102, and a truss structure formed by fixedly connecting a plurality of inclined webs 104 disposed between the chords 102 and the webs 103. . The arm joint body 10 has an extension axis (not shown) which is a trajectory composed of the center of all cross sections of the arm joint body 10. The chord 102 can be a tube, an angle, or the like.
顶部连接结构 12包括对称设置在臂节体 10顶部前侧和后侧的弦杆 102 上, 靠近弦杆 102顶部末端的四片插片 122, 各插片 122分别通过销轴 124 铰接固定在相应的弦杆 102上。  The top connecting structure 12 includes chords 102 symmetrically disposed on the front and rear sides of the top of the arm section 10, adjacent to the four ends 122 of the top end of the chord 102, and the tabs 122 are hingedly fixed by pins 124, respectively. On the chord 102.
底部连接结构 14包括对称设置在臂节体 10底部前侧和后侧的弦杆 102 上,靠近弦杆 102底部末端的四个连接板 142, 各连接板 142是双层片式结 构, 分别通过销轴 144铰接固定在相应的弦杆 102上。 各连接板 142在臂 节体 10底部弦杆 102上的固定位置与各插片 122在臂节体 10顶部弦杆 102 上的固定位置对应。  The bottom connecting structure 14 includes chords 102 symmetrically disposed on the front and rear sides of the bottom of the arm section 10, and four connecting plates 142 near the bottom end of the chord 102. Each connecting plate 142 is a two-layered structure, respectively The pin 144 is hingedly secured to the corresponding chord 102. The fixed position of each of the connecting plates 142 on the bottom chord 102 of the arm body 10 corresponds to a fixed position of each of the tabs 122 on the top chord 102 of the arm section 10.
在臂节体 10左右两侧对称设置四组拉板 16,一侧设置两组,每组两片, 即一对。 拉板 16是细长形片状结构, 其长度与臂节体 10的长度对应, 即 拉板 16在臂节体 10两侧从臂节体 10上部延伸到臂节体 10下部, 其延伸 方向与臂节体 10延伸轴线大致平行。 各对拉板 16通过三个固定件 162固 定在臂节体 10的腹杆 103上。 并且在各组的两块拉板 16之间还设有若干 定位件 164, 定位件 164的作用是使各组的两块拉板 16之间保持一定的间 距。在各组拉板 16的下端设有拉板连接件 166,拉板连接件 166大致呈 "8 " 字形, 其两端具有三层板式结构, 各组的两块拉板 16末端插接在各拉板连 接件 166上端的三层板式结构内, 并通过销轴 168铰接连接。 拉板 16在臂 节体 10左右两侧成对, 并且优选对称设置可以保证承力的均衡。 Four sets of pull plates 16 are symmetrically arranged on the left and right sides of the arm joint body 10, and two sets are arranged on one side, two sets each, that is, a pair. The pull plate 16 is an elongated sheet-like structure whose length corresponds to the length of the arm joint body 10, that is, the pull plate 16 extends from the upper portion of the arm joint body 10 to the lower portion of the arm joint body 10 on both sides of the arm joint body 10, and the extension thereof The direction is substantially parallel to the axis of extension of the arm joint 10. Each pair of pull plates 16 is fixed to the web 103 of the arm joint body 10 by three fixing members 162. And a plurality of positioning members 164 are further disposed between the two pulling plates 16 of each group, and the positioning members 164 function to maintain a certain distance between the two pulling plates 16 of each group. At the lower end of each set of pull plates 16, a pull plate connecting member 166 is provided. The pull plate connecting member 166 has a substantially "8" shape, and has two-layer plate structure at both ends thereof, and the ends of the two pull plates 16 of each group are inserted in each The upper end of the pull plate connector 166 is in a three-layered plate structure and hingedly connected by a pin 168. The pull plates 16 are paired on the left and right sides of the arm joint body 10, and are preferably symmetrically arranged to ensure equalization of the bearing force.
桁架臂通常由多个臂节顺序连接而成, 各臂节结构相同, 但长度有不 同规格, 以按实际需要组合成不同高度的桁架臂。  The truss arm is usually connected by a plurality of arm joints in sequence, and each arm joint has the same structure, but the length has different specifications, and is combined into truss arms of different heights according to actual needs.
请参照图 3所示, 下面以桁架臂臂节 2和 3为例说明桁架臂臂节的连 接方式, 桁架臂臂节 2和 3与上述的桁架臂臂节 1具有相同的结构。  Referring to Fig. 3, the truss arm joints 2 and 3 are exemplified below, and the truss arm joints 2 and 3 have the same structure as the truss arm joint 1 described above.
首先将桁架臂臂节 2的下端与桁架臂臂节 3的上端靠接在一起; 接着 将位于桁架臂臂节 2下端前侧和后侧的四个底部连接结构 24分别与位于桁 架臂臂节 3上端前侧和后侧的四个顶部连接结构 32连接固定在一起, 即将 桁架臂臂节 3上的插片 322插接到桁架臂臂节 2上的对应的连接板 242内, 再用四个销轴 40分别将各插片 322和连接板 242铰接连接在一起; 然后将 位于桁架臂臂节 2左侧和右侧的各组拉板 26下端的拉板连接件 266分别与 位于桁架臂臂节 3左侧和右侧的各组拉板 36上端铰接连接在一起, 即将桁 架臂臂节 3的各组拉板 36上端插接到桁架臂臂节 2的对应的拉板连接件 266 下端的三层片式结构内, 再用四个销轴 42分别将各组拉板 36和对应的拉 板连接件 266铰接连接在一起。 桁架臂臂节 2和 3的各组顺序连接的拉板 26、 36处于拉伸状态的长度小于顺序连接的桁架臂臂节 2、 3的弦杆处于拉 伸状态的长度, 并且桁架臂臂节 2、 3的弦杆在互相接触时的长度小于拉伸 状态的长度, 即相邻的桁架臂臂节 2、 3之间的底部连接结构 24和顶部连 接结构 32在桁架臂臂节 2、 3的弦杆互相接触时是略弯折的, 从而在桁架 臂臂节 2、 3承受拉力时, 底部连接结构 24和顶部连接结构 32可在桁架臂 臂节 2、 3的弦杆之间提供一定的间隙以保证各组拉板 26、 36充分受力。 请参照图 4所示, 起重机桁架臂 4即为将具有上述结构的多个桁架臂 臂节 41、 42、 43采用上述方法顺序连接在一起而形成, 起重机桁架臂 4为 单臂结构, 在该组装后的桁架臂 4作为起重机主臂的情况下, 将位于该桁 架臂 4顶端的桁架臂臂节 41的各组拉板 416顶端与起重机主臂顶端连接件 40通过销轴铰接连接, 再将位于该桁架臂 41底端的桁架臂臂节 43的各组 拉板 436底端的拉板连接件 4366与起重机配重通过销轴铰接连接。同样地, 起重机桁架臂 4的多个顺序连接的桁架臂臂节 41、 42、 43的各组顺序连接 的拉板处于拉伸状态的长度小于顺序连接的桁架臂臂节 41、 42、 43的臂节 体 410、 420、 430处于拉伸状态的长度, 并且起重机桁架臂 4的顺序连接 的桁架臂臂节 41、 42、 43的各相邻的臂节体 410、 420、 430在互相接触时 的长度小于拉伸状态的长度, 即相邻的臂节体 (例如 410、 420) 之间的连 接结构在桁架臂臂节 41、 42、 43的各相邻的臂节体 410、 420、 430在互相 接触时是略弯折的, 从而在起重机桁架臂 4承受拉力时, 连接结构可在桁 架臂臂节之间提供一定的间隙以保证各组拉板充分受力。 First, the lower end of the truss arm section 2 is abutted with the upper end of the truss arm section 3; then the four bottom connecting structures 24 at the front and rear sides of the lower end of the truss arm section 2 are respectively located at the truss arm section 3 The upper top and rear side four top connecting structures 32 are fixedly connected together, that is, the insert 322 on the truss arm arm section 3 is inserted into the corresponding connecting plate 242 on the truss arm arm section 2, and then four The pins 40 are hingedly connected to the respective inserts 322 and the connecting plates 242; respectively, and then the pull plate connectors 266 at the lower ends of the sets of pull plates 26 on the left and right sides of the truss arm arms 2 are respectively located on the truss arms. The upper ends of the sets of pull plates 36 on the left and right sides of the arm section 3 are hingedly connected together, that is, the upper ends of the sets of pull plates 36 of the truss arm section 3 are inserted into the lower ends of the corresponding pull plate connectors 266 of the truss arm sections 2 In the three-layered sheet structure, the four sets of pull tabs 36 and the corresponding pull-plate connectors 266 are hingedly connected together by four pins 42 respectively. The length of the tensioned plates 26, 36 of the sets of truss arm arms 2 and 3 in the stretched state is less than the length of the struts of the truss arm arms 2, 3 which are sequentially connected, and the truss arm section The length of the chords of 2, 3 when in contact with each other is less than the length of the stretched state, that is, the bottom connecting structure 24 between the adjacent truss arm arms 2, 3 and the top connecting structure 32 are at the truss arm sections 2, 3 The chords are slightly bent when they are in contact with each other, so that when the truss arm arms 2, 3 are subjected to tensile forces, the bottom connecting structure 24 and the top connecting structure 32 can be in the truss arms. A certain gap is provided between the chords of the arm joints 2, 3 to ensure that the sets of pull plates 26, 36 are fully stressed. Referring to FIG. 4, the crane truss arm 4 is formed by sequentially connecting a plurality of truss arm arms 41, 42 and 43 having the above structure by the above method, and the crane truss arm 4 is a single arm structure. When the assembled truss arm 4 is used as the main boom of the crane, the top end of each set of pull plates 416 of the truss arm arm joint 41 located at the top end of the truss arm 4 is hingedly connected with the crane main arm top end connecting member 40 through the pin shaft, and then The pull plate connector 4366 at the bottom end of each set of pull plates 436 at the bottom end of the truss arm 41 is hingedly coupled to the crane weight by a pin. Similarly, the longitudinally connected lengths of the plurality of sequentially connected truss arm sections 41, 42 and 43 of the truss arm 4 of the crane truss arm 4 are less than the length of the truss arm sections 41, 42 and 43 which are sequentially connected. The length of the arm joints 410, 420, 430 is in a stretched state, and the adjacent arm joints 410, 420, 430 of the truss arm sections 41, 42, 43 of the truss arms 4 that are sequentially connected are in contact with each other. The length is less than the length of the stretched state, that is, the connection structure between adjacent arm segments (e.g., 410, 420) is adjacent to each of the adjacent arm segments 410, 420, 430 of the truss arm portions 41, 42, 43 When they are in contact with each other, they are slightly bent, so that when the crane truss arm 4 is subjected to the tensile force, the connecting structure can provide a certain gap between the truss arm arms to ensure that the sets of the plates are fully stressed.
这样,在起重机工作时, 该桁架臂 4受到的压力由多个桁架臂臂节 41、 42、 43的臂节体 410、 420、 430支承, 具体地, 相邻桁架臂臂节的各弦杆 末端的端面对接, 形成接触面, 桁架臂 4受到的压力由各臂节体 410、 420、 430的各弦杆末端互相接触的接触面支撑。该桁架臂 4受到的拉力由多个桁 架臂臂节 41、 42、 43的各组拉板 416、 426、 436支承, 并且由于起重机桁 架臂 4的多个顺序连接的桁架臂臂节 41、 42、 43的各组顺序连接的拉板处 于拉伸状态的长度小于顺序连接的桁架臂臂节 41、 42、 43的臂节体 410、 420、 430处于拉伸状态的长度,在桁架臂 4受到拉力时,各桁架臂臂节 41、 42、 43之间的连接结构 (顶部连接结构和底部连接结构) 可在桁架臂臂节 41、 42、 43的臂节体 410、 420、 430之间提供一定的间隙以保证各组拉板 416、 426、 436充分受力。 采用本发明的桁架臂臂节以及桁架臂, 采用两侧多条拉板并行提供配 重提升拉力, 使该桁架臂结构既可以承受压力, 也能够提供拉力, 并且可 以在起重能力不变的前提下, 有效地减小臂节体桁架结构尺寸, 并且降低 臂节体桁架结构的选材规格和强度要求; 桁架臂承压时通过接触面提供支 撑力, 更好地利用了桁架臂的结构特性。 Thus, when the crane is in operation, the truss arm 4 is subjected to the pressure supported by the arm segments 410, 420, 430 of the plurality of truss arm sections 41, 42, 43, in particular, the chords of adjacent truss arm sections The end faces of the ends are butted to form a contact surface, and the pressure applied to the truss arms 4 is supported by the contact faces of the respective chord ends of the arm segments 410, 420, 430 which are in contact with each other. The truss arm 4 is subjected to a pulling force supported by a plurality of sets of pull plates 416, 426, 436 of a plurality of truss arm sections 41, 42 and 43, and a plurality of truss arm sections 41, 42 of the truss arm 4 are connected in sequence. The length of each of the sequentially connected pull plates of the group 43 is less than the length of the arm joints 410, 420, 430 of the truss arm arms 41, 42 and 43 which are sequentially connected in the stretched state, and is received in the truss arm 4 When tensioning, the connection structure between the truss arm sections 41, 42, 43 (top connection structure and bottom connection structure) can be provided between the arm sections 410, 420, 430 of the truss arm sections 41, 42, 43 A certain gap is provided to ensure that the sets of pull plates 416, 426, 436 are fully stressed. By adopting the truss arm arm section and the truss arm of the invention, the plurality of pull plates on both sides are used to provide the weight lifting tension in parallel, so that the truss arm structure can withstand the pressure and the pulling force, and can maintain the lifting capacity unchanged. Under the premise, the arm truss structure size is effectively reduced, and the material specification and strength requirements of the ganglion truss structure are reduced; the truss arm provides supporting force through the contact surface under pressure, and the structural characteristics of the truss arm are better utilized. .
请参照图 5和图 6所示, 本发明实施例的桁架臂臂节同样可以组成双 臂式起重机桁架臂, 图 5和图 6所示的起重机桁架臂 5即为一个实例。  Referring to Figures 5 and 6, the truss arm section of the embodiment of the present invention can also constitute a jib crane truss arm. The crane truss arm 5 shown in Figures 5 and 6 is an example.
起重机桁架臂 5由具有上述结构的多个桁架臂臂节 51、 52、 53、 54、 55、 56, 以及连接节 57构成。其中连接节 57包括并列设置的第一臂节 572 和第二臂节 573,以及设置在第一臂节 572和第二臂节 573之间的连接结构 574。 第一臂节 572和第二臂节 573的结构与桁架臂臂节 51、 52、 53、 54、 55、 56的结构相同, 均具有连接结构以及拉板。  The crane truss arm 5 is composed of a plurality of truss arm sections 51, 52, 53, 54, 55, 56 having the above structure, and a joint 57. The connecting section 57 includes a first arm section 572 and a second arm section 573 which are juxtaposed, and a connecting structure 574 disposed between the first arm section 572 and the second arm section 573. The first arm section 572 and the second arm section 573 have the same structure as the truss arm sections 51, 52, 53, 54, 55, 56, each having a connecting structure and a pull plate.
桁架臂臂节 51、 53、 连接节 57的第一臂节 572, 以及桁架臂臂节 55 以上述方法顺序连接为第一组桁架臂。桁架臂臂节 52、 54、 连接节 57的第 二臂节 573, 以及桁架臂臂节 56以上述方法顺序连接为第二组桁架臂, 从 而形成并联双臂式桁架臂。 在该组装后的桁架臂 5作为起重机桁架臂的情 况下, 除了具有前述实施例的优点, 还兼具双臂式起重机桁架臂的优点。  The truss arm sections 51, 53, the first arm section 572 of the joint 57, and the truss arm section 55 are sequentially connected as the first set of truss arms in the manner described above. The truss arm sections 52, 54 and the second arm section 573 of the connecting section 57, and the truss arm section 56 are sequentially connected as the second set of truss arms in the above-described manner, thereby forming a parallel-arm truss arm. In the case where the assembled truss arm 5 is used as a crane truss arm, in addition to the advantages of the foregoing embodiment, it also has the advantages of a double-arm crane truss arm.
可以理解, 在本发明桁架臂臂节, 桁架臂和具有该桁架臂的起重机的 其它实施例中, 设置在各臂节体顶部的顶部连接结构, 以及设置在臂节体 底部的底部连接结构也可以是普通的销轴连结结构。 设置在各组拉板的下 端的拉板连接件也可以设置在各组拉板的上端, 或者省略拉板连接件, 直 接将拉板首尾相接, 采用销轴等铰接连接。  It can be understood that in the other embodiments of the truss arm section of the present invention, the truss arm and the crane having the truss arm, the top connecting structure disposed at the top of each arm section and the bottom connecting structure disposed at the bottom of the arm section body are also It can be a common pin joint structure. The pull plate connecting members disposed at the lower ends of the respective sets of pull plates may also be disposed at the upper ends of the respective sets of pull plates, or the pull plate connecting members may be omitted, and the pull plates may be directly connected end to end, and hingedly connected by pins or the like.
以上所述, 仅是本发明的实施例而已, 并非对本发明作任何形式上的 限制, 虽然本发明已以实施例揭露如上, 然而并非用以限定本发明, 任何 熟悉本专业的技术人员, 在不脱离本发明技术方案范围内, 当可利用上述 揭示的技术内容作出些许更动或修饰为等同变化的等效实施例, 但凡是未 脱离本发明技术方案内容, 依据本发明的技术实质对以上实施例所作的任 何简单修改、 等同变化与修饰, 均仍属于本发明技术方案的范围内。 The above is only the embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Equivalent embodiments that may be modified or modified to equivalent variations may be made without departing from the spirit and scope of the invention. Any simple modifications, equivalent changes and modifications of the above embodiments in accordance with the technical scope of the present invention are still within the scope of the technical solutions of the present invention.

Claims

权利要求 Rights request
1、 一种桁架臂臂节, 包括臂节体, 设置在所述臂节体顶部的顶部连接 结构, 以及设置在所述臂节体底部的底部连接结构, 所述臂节体是桁架结 构, 所述臂节体具有延伸轴线, 其特征在于: 所述桁架臂臂节还包括设置 在所述臂节体两侧的拉板, 所述拉板从所述臂节体上部延伸到其下部, 其 延伸方向与所述臂节体的延伸轴线大致平行。 What is claimed is: 1. A truss arm joint comprising: an arm joint body, a top joint structure disposed at a top portion of the arm joint body, and a bottom joint structure disposed at a bottom portion of the arm joint body, the arm joint body being a truss structure, The arm joint body has an extension axis, and the truss arm arm joint further includes a pull plate disposed on two sides of the arm joint body, and the pull plate extends from an upper portion of the arm joint body to a lower portion thereof. The direction of extension is substantially parallel to the axis of extension of the arm section.
2、 如权利要求 1所述的桁架臂臂节, 其特征在于, 所述拉板在所述臂 节体两侧对称设置。 2. The truss arm section according to claim 1, wherein the pull plates are symmetrically disposed on both sides of the arm body.
3、 如权利要求 2所述的桁架臂臂节, 其特征在于, 在所述臂节体两侧 各设置至少一对拉板, 在各对拉板上还设有使两块拉板之间保持一定间距 的定位件。 3. The truss arm arm joint according to claim 2, wherein at least one pair of pull plates are disposed on each side of the arm joint body, and each pair of pull plates is further disposed between the two pull plates. Keep the positioning parts at a certain distance.
4、 如权利要求 3所述的桁架臂臂节, 其特征在于, 所述臂节体是由弦 杆, 设置在所述弦杆之间的若干腹杆, 以及倾斜设置在所述弦杆和腹杆之 间的若干斜腹杆形成的桁架结构, 所述桁架臂臂节还包括固定件, 各对拉 板分别通过所述固定件固定在所述臂节体的腹杆上。 4. The truss arm boom section according to claim 3, wherein the arm knuckle body is a chord, a plurality of webs disposed between the chords, and slantedly disposed on the chord and A truss structure formed by a plurality of oblique webs between the webs, the truss arm section further comprising a fixing member, wherein each pair of pulling plates are respectively fixed on the webs of the arm joints by the fixing members.
5、 如权利要求 1-4中任一项所述的桁架臂臂节, 其特征在于, 在所述 拉板上端或者下端还设有拉板连接件, 所述拉板连接件一端与所述拉板的 该上端或者下端铰接连接。 The truss arm joint according to any one of claims 1 to 4, further comprising a pull plate connecting member at the end or the lower end of the pull plate, the pull plate connecting member having one end and the The upper or lower end of the pull plate is hingedly connected.
6、 一种桁架臂, 包括若干桁架臂臂节, 各所述桁架臂臂节首尾相接, 其特征在于, 所述桁架臂臂节是权利要求 1-5中任一项所述的桁架臂臂节, 各所述桁架臂臂节的臂节体通过所述顶部连接结构, 以及底部连接结构首 尾相接, 各所述桁架臂臂节的拉板首尾相接。 6. A truss arm comprising a plurality of truss arm sections, each of the truss arm sections being joined end to end, wherein the truss arm section is the truss arm of any one of claims 1-5 Arm section, The arm joints of each of the truss arm arm joints are connected end to end through the top joint structure and the bottom joint structure, and the pull plates of each of the truss arm arm joints meet end to end.
7、 如权利要求 6所述的桁架臂, 其特征在于, 相邻所述桁架臂臂节的 拉板通过销轴铰接连接。 7. The truss arm of claim 6, wherein the pull plates adjacent the truss arm knuckles are hingedly connected by a pin.
8、 如权利要求 6所述的桁架臂, 其特征在于, 相邻所述桁架臂臂节的 各弦杆末端的端面对接, 形成可承受压力的接触面。 8. The truss arm of claim 6 wherein the end faces of the ends of the chords adjacent the truss arm sections abut one another to form a pressure-bearing contact surface.
9、 如权利要求 6所述的桁架臂, 其特征在于, 所述桁架臂的若干桁架 臂臂节的各组顺序连接的拉板处于拉伸状态的长度小于顺序连接的臂节体 处于拉伸状态的长度, 并且顺序连接的桁架臂臂节的臂节体在互相接触时 的长度小于拉伸状态的长度。 The truss arm according to claim 6, wherein each of the plurality of truss arm sections of the truss arm is in a stretched state, and the length of the puller is less than that of the sequentially connected arm sections. The length of the state, and the length of the arm segments of the truss arm sections that are sequentially connected when in contact with each other is smaller than the length of the stretched state.
10、 一种起重机, 包括桁架臂, 位于所述桁架臂顶端的主臂顶端连接 件, 以及位于所述桁架臂底端的起重机配重, 其特征在于, 所述桁架臂是 权利要求 6-9中任一项所述的桁架臂,位于所述桁架臂顶端的桁架臂臂节的 拉板顶端与主臂顶端连接件铰接连接, 位于所述桁架臂底端的桁架臂臂节 的拉板底端与起重机配重铰接连接。 10. A crane comprising a truss arm, a main boom top end member at a top end of the truss arm, and a crane counterweight at a bottom end of the truss arm, wherein the truss arm is in claim 6-9 The truss arm of any one of the truss arms, wherein the top end of the truss arm section at the top end of the truss arm is hingedly connected to the main arm top end connecting member, and the bottom end of the truss arm arm section at the bottom end of the truss arm is Crane weighted articulated connection.
PCT/CN2012/081941 2012-03-20 2012-09-25 Arm joint for truss arm, truss arm, and crane with truss arm WO2013139116A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201210075067.2A CN102530745B (en) 2012-03-20 2012-03-20 Arm joint for truss arm, truss arm, and crane with truss arm
CN201210075067.2 2012-03-20

Publications (1)

Publication Number Publication Date
WO2013139116A1 true WO2013139116A1 (en) 2013-09-26

Family

ID=46338990

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/081941 WO2013139116A1 (en) 2012-03-20 2012-09-25 Arm joint for truss arm, truss arm, and crane with truss arm

Country Status (2)

Country Link
CN (1) CN102530745B (en)
WO (1) WO2013139116A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016150570A1 (en) * 2015-03-26 2016-09-29 Liebherr-Werk Biberach Gmbh Crane tower

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102530745B (en) * 2012-03-20 2014-03-12 中联重科股份有限公司 Arm joint for truss arm, truss arm, and crane with truss arm
CN111874533A (en) * 2020-07-15 2020-11-03 中国铁建重工集团股份有限公司 Belt conveyor and conveying bridge thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229384U (en) * 1985-08-02 1987-02-21
JPH07144885A (en) * 1993-11-26 1995-06-06 Hitachi Constr Mach Co Ltd Crane boom assembly
JPH10120365A (en) * 1996-10-16 1998-05-12 Hitachi Constr Mach Co Ltd Handrail device for crane boom
JP2003182976A (en) * 2003-01-17 2003-07-03 Tadano Ltd Luffing jib and assembling method for the same
CN101880012A (en) * 2010-07-21 2010-11-10 上海三一科技有限公司 Transition structure for crane jib
CN102530745A (en) * 2012-03-20 2012-07-04 中联重科股份有限公司 Arm joint for truss arm, truss arm, and crane with truss arm

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101696598B (en) * 2009-09-24 2012-02-22 中冶建工有限公司 Wholly lifted construction external frame
CN201512372U (en) * 2009-10-19 2010-06-23 河南省中原矿山设备有限公司 Web member on boom crane
CN201756419U (en) * 2009-11-29 2011-03-09 周明忠 High strength standard section of tower crane
CN102249161A (en) * 2010-05-21 2011-11-23 上海三一科技有限公司 Multi-main-chord arm support for crane
CN201874233U (en) * 2010-10-29 2011-06-22 中建三局建设工程股份有限公司 Modular integral jacking steel platform formwork system with few support points at low position
CN201952138U (en) * 2011-03-07 2011-08-31 徐工集团工程机械股份有限公司建设机械分公司 Integral arm support and crane comprising same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6229384U (en) * 1985-08-02 1987-02-21
JPH07144885A (en) * 1993-11-26 1995-06-06 Hitachi Constr Mach Co Ltd Crane boom assembly
JPH10120365A (en) * 1996-10-16 1998-05-12 Hitachi Constr Mach Co Ltd Handrail device for crane boom
JP2003182976A (en) * 2003-01-17 2003-07-03 Tadano Ltd Luffing jib and assembling method for the same
CN101880012A (en) * 2010-07-21 2010-11-10 上海三一科技有限公司 Transition structure for crane jib
CN102530745A (en) * 2012-03-20 2012-07-04 中联重科股份有限公司 Arm joint for truss arm, truss arm, and crane with truss arm

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016150570A1 (en) * 2015-03-26 2016-09-29 Liebherr-Werk Biberach Gmbh Crane tower
US10392233B2 (en) 2015-03-26 2019-08-27 Liebherr-Werk Biberach Gmbh Crane tower

Also Published As

Publication number Publication date
CN102530745A (en) 2012-07-04
CN102530745B (en) 2014-03-12

Similar Documents

Publication Publication Date Title
CN102267670B (en) Connecting frame, boom system with connecting frame, and lifting appliance
US20110284490A1 (en) Crane boom with multi main-chord
CN201272663Y (en) Telescopic arm crane and its super-lifting apparatus
WO2013139116A1 (en) Arm joint for truss arm, truss arm, and crane with truss arm
WO2012009950A1 (en) Transition structure for boom frame of crane
WO2012048587A1 (en) Tower crane and balance arm tension rod structure thereof and mounting method for the structure
CN102491194B (en) Crane super-lifting device and all-terrain crane with the crane super-lifting device
CN103466472A (en) Auxiliary arm system and crawler crane
CN101967795B (en) Novel built-in cable-truss anchoring structure and construction method thereof
CN102659037A (en) Superlift device for crane and telescopic boom crane
WO2013071796A1 (en) Super-lifting device of crane and all-terrain crane
WO2018036181A1 (en) Lattice boom structure and crane
CN202265344U (en) Connection frame as well as boom system with same and hoisting machinery
CN203545535U (en) Auxiliary arm and crane
CN103641000A (en) Crane and super-lifting device thereof
CN103422614B (en) Wavelike steel webplate steel construction continuous box girder
CN202090612U (en) Concrete distributing arm support and concrete pump truck
CN105113692A (en) Strip-shaped steel pulling plate cable dome structure
CN202063653U (en) Crane and arm support of same
CN209384124U (en) A kind of steel truss girder purlin piece turnover hoisting structure
CN105347207B (en) A kind of combined type arm support
CN103422613B (en) Wavelike steel webplate steel construction simply supported l beam
CN103395706B (en) Hoisting crane and telescopic boom thereof
CN105584941A (en) Truss arm reducing device and crawler crane
CN207177086U (en) It is a kind of can quick assembling set up truss

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12871644

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct app. not ent. europ. phase

Ref document number: 12871644

Country of ref document: EP

Kind code of ref document: A1