WO2013075454A1 - Crane and lifting extension apparatus thereof - Google Patents

Crane and lifting extension apparatus thereof Download PDF

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Publication number
WO2013075454A1
WO2013075454A1 PCT/CN2012/074244 CN2012074244W WO2013075454A1 WO 2013075454 A1 WO2013075454 A1 WO 2013075454A1 CN 2012074244 W CN2012074244 W CN 2012074244W WO 2013075454 A1 WO2013075454 A1 WO 2013075454A1
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WO
WIPO (PCT)
Prior art keywords
super
crane
base
lifting
lifting device
Prior art date
Application number
PCT/CN2012/074244
Other languages
French (fr)
Chinese (zh)
Inventor
姜成武
李礼
查铂
Original Assignee
湖南三一智能控制设备有限公司
三一汽车起重机械有限公司
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 湖南三一智能控制设备有限公司, 三一汽车起重机械有限公司 filed Critical 湖南三一智能控制设备有限公司
Publication of WO2013075454A1 publication Critical patent/WO2013075454A1/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
    • B66C23/826Bracing equipment acting at an inclined angle to vertical and horizontal directions

Definitions

  • the present invention relates to the field of construction machinery, and in particular to a crane superlifting device and a crane using the same.
  • the boom is the core component of the crane and is the most important load-bearing structural component for crane lifting operations.
  • the technical content of the boom structure is an important indicator of the crane's product level.
  • the boom of the large p-clamp crane is getting longer and longer, the hoisting weight is getting heavier and heavier, and the working condition is getting worse. Since the component of the object being lifted in the downward direction perpendicular to the jib is larger, the deflection of the jib on the variator plane and the plane of rotation is larger, and the deflection causes the jib to be stressed. Poor, thus limiting the lifting capacity and carrying capacity of the crane. In addition, the force of the large-tonnage crane variable-speed cylinder is also significantly increased. The diameter growth of the variable-width cylinder affects the overall design and layout of the whole machine.
  • a super-lifting device is generally installed on the boom of the large-tonnage crane to improve the stress state of the boom and improve the lifting capacity and carrying capacity of the crane.
  • the existing super-lifting device includes two masts and two cylinders connected to the mast, and the mast is deployed by the driving action of the two cylinders. Since the mast is controlled by two cylinders, it is impossible to ensure that the two masts are unfolded at the same time, which will result in inconsistent angles of the two masts, so that the ropes matched with the two masts are inconsistent, thus failing to control the side bend. effect.
  • an object of the present invention is to provide a super-lifting device comprising a super-lifting mast, a front tensioning mechanism and a rear tensioning mechanism, the super-lifting mast comprising a base, a rod, a slewing cylinder and a power mechanism, the pedestal is fixed on the hoisting arm of the crane, one end of the shank is hinged to the base, and two ends of the slewing cylinder are respectively hinged to the jib and
  • the number of the power mechanisms is only one on the base, and the power mechanism is fixed at the On the base, and hinged with the rod portion, the front tensioning mechanism is connected between the super-lifting mast and the head of the lifting arm, and the rear tensioning mechanism is connected to the super Between the mast and the tail of the boom.
  • the power mechanism includes a telescopic cylinder and two connecting rods, and the telescopic cylinder is fixed on the base, one end of each link is hinged on the rod portion, and the other end is hinged to the Said on the telescopic cylinder.
  • the power mechanism includes a bi-directional telescopic cylinder fixed to the base, and two telescopic arms of the bi-directional telescopic cylinder are hinged to the rod and slide on the rod.
  • each telescopic arm is connected with the guide rails and slidably and rotatably cooperates.
  • the rod portion is provided with a reel mechanism, a first steering member and a second steering member
  • the front tensioning mechanism includes a first linear member, a second linear member and a third steering member
  • the first linear a component is coupled to the head of the boom
  • one end of the second linear component is connected to the reel mechanism, and sequentially passes through the first steering component, the third steering component, and the second steering component
  • the other end of the second linear member is fixed to the stem.
  • the reel mechanism is disposed on the stem portion and located at a position adjacent to the bottom end of the stem portion.
  • a pre-tightening cylinder is disposed on the rod portion, and the other end of the second linear member is fixed to the stem portion by being connected to the pre-tightening cylinder.
  • one end of the rear tensioning mechanism is disposed on the rod portion, and the other end is disposed on a tail portion of the lifting arm or on a turntable of the crane.
  • the present invention also provides a crane to which the above-described super-lifting device is applied.
  • the super-lifting device of the present invention only has one power mechanism, and the power mechanism can simultaneously drive the two rods to be deployed, thereby ensuring the simultaneous deployment of the two masts and the angle at which the two masts are deployed. Consistent, so that the wire rope matched with the two masts is consistent in force, thereby achieving the effect of controlling the side bend.
  • FIG. 1 is a schematic structural view of a super-lifting device according to an embodiment of the present invention.
  • Fig. 2 is a schematic view showing the structure of a mast according to a first preferred embodiment of the present invention.
  • Figure 3 is a schematic view showing the structure of a mast of a second preferred embodiment of the present invention.
  • the super-lifting device of the present invention is used in a crane, which may include a crawler crane or various wheeled cranes (e.g., a truck crane, an all-terrain crane, an off-road tire crane, or a truck-mounted crane). Most preferably, the super-lifting device of the present invention is used in an all-terrain crane to accommodate large tonnage lifting operations and different road driving requirements.
  • a crane which may include a crawler crane or various wheeled cranes (e.g., a truck crane, an all-terrain crane, an off-road tire crane, or a truck-mounted crane).
  • the super-lifting device of the present invention is used in an all-terrain crane to accommodate large tonnage lifting operations and different road driving requirements.
  • the 3 ⁇ 4 ⁇ 4 device of the present invention is fixed to the crane's boom 9 to improve the stress state of the boom 9, and to improve the crane's lifting capacity and carrying capacity.
  • the super-lifting device includes a super-lifting mast 1, a front tensioning mechanism 3, and a rear tensioning mechanism 5.
  • the super-lifting mast 1 of the first preferred embodiment of the present invention includes a base 11, a rod portion 12, a power mechanism, and a horn cylinder 15.
  • the base 11 is fixed to the middle of the boom 9.
  • the number of the rod portions 12 is preferably two, and the rod portions 12 are respectively hinged at both ends of the base 11.
  • Each of the rod portions 12 is provided with a reel mechanism 120, a first steering member 121, and a second steering member 122.
  • the reel mechanism 120 is disposed at a position where the rod portion 12 is adjacent to the bottom end.
  • the reel mechanism 120 of the present invention may be disposed on the stem portion 12 or may be disposed on other mechanical portions of the crane, and the present invention is not limited thereto.
  • the reel mechanism 120 is disposed on the stem portion 12.
  • the reel mechanism 120 can be driven by a variety of rotary actuators, and the invention is not limited thereto.
  • the present invention adjusts the overall center of gravity of the super-lifting mast 1, and during the working process, the raised mast 10 has a small deflection, and while ensuring the stress state of the boom 9 is improved, The whole device The state of force has also improved.
  • the first steering member 121 and the second steering member 122 are disposed at one end of the rod portion 12 away from the base 11 .
  • the power mechanism includes a telescopic cylinder 13 and a connecting rod 14.
  • the number of the telescopic cylinders 13 is only one, and one end thereof is fixed to the base 11.
  • the number of the links 14 is preferably two, one end of each link 14 is hinged to the rod portion 12, and the other end is hinged to an end of the telescopic cylinder 13 away from the base 11.
  • the telescopic cylinder 13 drives the joint 14 to rotate relative to the stem portion 12, thereby rotating the stem portion 12 to form an inverted "eight" shape.
  • the number of the variator cylinders 15 is only one, one end of which is hinged to the base 1 1 and the other end of which is hinged to the hoisting arm 9. The expansion and contraction of the slewing cylinder 15 allows the adjustment of the pitch angle of the shank portion 12.
  • the number of the front tensioning mechanisms 3 is two sets for tightening the corresponding rod portions 12.
  • Each of the front tensioning mechanisms 3 includes a first linear member 31, a second linear member 32, and a third steering member 33.
  • the first linear member 31 and the second linear member 32 may be linear load-bearing members of various materials such as a wire rope or an iron chain, and the present invention is not limited thereto.
  • the third steering member 33 is preferably a moving pulley. Both ends of the first linear member 31 are connected to the head of the boom 9 and the third steering member 33, respectively.
  • One end of the second linear member 32 is connected to the reel mechanism 120, and sequentially passes through the first steering member 121, the third steering member 33 and the second steering member 122, and the other end of the second linear member 32 is fixed.
  • the other end of the second linear member 32 is fixed to a pre-tightening cylinder (not shown) on the rod portion 12.
  • the tension of the second linear member 32 and the first linear member 31 can be adjusted by the telescopic movement of the pre-tightening cylinder as needed.
  • the number of the rear tensioning mechanisms 5 is two, one end of which is disposed on the corresponding rod portion 12, and the other end is disposed at the tail of the boom 9 or on a mechanical component such as a turntable of the crane.
  • the rear tensioning mechanism 5 may include a rope row and a structure such as a telescopic cylinder or a tightening winch, and the present invention is not limited thereto.
  • the front tensioning mechanism applies a pulling force to the head of the boom 9, and the rear tensioning mechanism 5 applies a pulling force to the overhanging mast 1, thereby achieving the overall balance of the super-lifting mast 1.
  • the super-lifting mast of the second preferred embodiment of the present invention includes a base 61, a rod portion 62, a telescopic cylinder support 63, a power mechanism, and a horn cylinder 65.
  • the base 61 is fixed to the middle of the boom 9.
  • the structure of the rod portion 62 is substantially the same as that of the rod portion 12 of the first preferred embodiment. The difference is that each of the rod portions 62 is provided with a guide rail 621 for engaging with the bidirectional expansion and contraction.
  • the cylinder slides and rotates.
  • the telescopic cylinder support 63 is fixed to the base 61 on.
  • the power mechanism is a bidirectional telescopic cylinder that can drive the trunk 62 to be deployed.
  • the bidirectional telescopic cylinder includes a cylinder 641 and two telescopic arms 642 fixed to the telescopic cylinder mount 63.
  • the arms 642 are disposed at two ends of the cylinder block 641.
  • One end of each telescopic arm 642 away from the cylinder block 641 is connected to the corresponding rail 621 and slidably and rotatably cooperates.
  • the rod portion 62 slides and rotates relative to the telescopic arm 642.
  • the number of the variet cylinders 65 is only one, one end of which is hinged to the base 61 and the other end of which is hinged to the hoisting arm 9.
  • Each of the rod portions 62 is provided with a reel mechanism 620, a first steering member 621, and a second steering member 622.
  • connection relationship between the super-lifting mast and the front tensioning mechanism 3 and the rear tensioning mechanism 5 of the second preferred embodiment of the present invention, and the super-lifting mast 1 and the front tensioning mechanism 3 of the first preferred embodiment The connection relationship of the rear tensioning mechanism 5 is the same, and therefore will not be described again.
  • the telescopic cylinder mount 63 can be considered part of the base 11, and therefore, the bi-directional telescopic cylinder can be considered to be fixed to the base 11.
  • the present invention also provides a crane including the super-lifting device.
  • a crane including the super-lifting device.
  • Other structures of the crane can refer to the prior art, and are not described herein again.
  • the crane is in particular an all terrain crane.
  • the crane of the present invention and the super-lifting device thereof have the following advantages compared with the prior art:
  • only one power mechanism is provided, which can simultaneously drive the two rods to expand, so It is ensured that the two masts are unfolded at the same time, so that the angles of the two masts are unfolded, so that the wire ropes matched with the two masts are consistent in force, and the effect of controlling the side bend is achieved.
  • the super-lifting device has only one power mechanism, the structure is simple and light in weight.
  • the present invention arranges the reel mechanism on the super-lifting mast and is located at a position adjacent to the bottom end of the super-lifting mast to adjust the overall center of gravity of the super-lifting mast.
  • the raised super-lifting mast has a small deflection, and while the force state of the boom is improved, the overall force state of the super-lifting device is also improved.

Abstract

Disclosed is a crane and a lifting extension apparatus thereof, characterized by comprising a lifting extension derrick (1), a forward tensioning mechanism (3), and a rear tensioning mechanism (5), wherein the lifting extension derrick (1) comprises a base (11), a mast (12), a jib luffing oil cylinder (15) and a power mechanism. The base (11) is fixed onto the boom (9) of the crane; one end of the mast (12) is hinged to the base (11); the two ends of the jib luffing oil cylinder (15) are respectively hinged to the crane boom (9) and the base (11); there is only one power mechanism; the power mechanism is fixed onto the base (11) and is hinged to the mast (12); the forward tensioning mechanism (3) is connected between the lifting extension derrick (1) and the tip of the crane boom (9); and the rear tensioning mechanism (5) is connected between the lifting extension derrick (1) and the tail end of the crane boom (9). The lifting extension apparatus is only provided with one power mechanism. The power mechanism can simultaneously drive the expansion of two masts and therefore, the simultaneous expansion of two derricks can be guaranteed, making the angle of the expansion of the two derricks consistent, thereby enabling steel cable cooperating with the two derricks to be subject to the same force and thus achieving the effect of side sway control.

Description

一种起重机及其^装置 本申请要求于 2011 年 11 月 21 日提交中国专利局、 申请号为 201110370571.0、 发明名称为 "一种起重机及其超起装置" 的中国专利申 请的优先权, 其全部内容通过引用结合在本申请中。  The present invention claims the priority of the Chinese patent application filed on November 21, 2011 by the Chinese Patent Office, the application number is 201110370571.0, and the invention is entitled "a crane and its super-lifting device", all of which The content is incorporated herein by reference.
技术领域 Technical field
本发明涉及工程机械领域, 具体地说, 涉及一种起重机超起装置及应 用其的起重机。  The present invention relates to the field of construction machinery, and in particular to a crane superlifting device and a crane using the same.
背景技术 Background technique
起重臂是起重机的核心部件,是起重机吊载作业最重要的承重结构件。 起重臂结构的技术含量是起重机产品水平的重要标志。  The boom is the core component of the crane and is the most important load-bearing structural component for crane lifting operations. The technical content of the boom structure is an important indicator of the crane's product level.
为了使起重机具有较大的起升高度,大 p屯位起重机的起重臂越来越长, 吊重越来越重, 工况越来越恶劣。 由于被吊运物在垂直于起重臂向下方向 的分力较大, 使得起重臂在变幅平面和回转平面上的挠度均较大, 而该挠 度使得起重臂的受力情况较差, 从而限制了起重机的起重量和承载能力。 另外, 大吨位起重机变幅油缸的受力也明显增大, 变幅油缸的直径增长影 响了整机总体设计和布局。  In order to make the crane have a large lifting height, the boom of the large p-clamp crane is getting longer and longer, the hoisting weight is getting heavier and heavier, and the working condition is getting worse. Since the component of the object being lifted in the downward direction perpendicular to the jib is larger, the deflection of the jib on the variator plane and the plane of rotation is larger, and the deflection causes the jib to be stressed. Poor, thus limiting the lifting capacity and carrying capacity of the crane. In addition, the force of the large-tonnage crane variable-speed cylinder is also significantly increased. The diameter growth of the variable-width cylinder affects the overall design and layout of the whole machine.
为緩解挠度和变幅油缸受力问题, 一般会在大吨位起重机的起重臂上 设置超起装置, 以改善起重臂的受力状态, 提高起重机的起重量和承载能 力。  In order to alleviate the problem of deflection and variable-cylinder cylinder force, a super-lifting device is generally installed on the boom of the large-tonnage crane to improve the stress state of the boom and improve the lifting capacity and carrying capacity of the crane.
然而, 现有的超起装置中包括两个桅杆及与桅杆相连接的两个油缸, 通过两个油缸的驱动作用使所述桅杆展开。 由于桅杆分别由两个油缸进行 控制, 因此无法保证两个桅杆同时展开, 会导致两个桅杆展开的角度不一 致, 使得与两个桅杆相配合的钢丝绳受力不一致, 从而达不到控制旁弯的 效果。  However, the existing super-lifting device includes two masts and two cylinders connected to the mast, and the mast is deployed by the driving action of the two cylinders. Since the mast is controlled by two cylinders, it is impossible to ensure that the two masts are unfolded at the same time, which will result in inconsistent angles of the two masts, so that the ropes matched with the two masts are inconsistent, thus failing to control the side bend. effect.
发明内容 Summary of the invention
为了克服现有技术的上述缺陷和不足, 本发明的目的在于提供一种超 起装置, 包括超起桅杆、 前拉紧机构、 后拉紧机构, 所述超起桅杆包括基 座、 杆部、 变幅油缸及动力机构, 所述基座固定于起重机的起重臂上, 所 述杆部的一端与所述基座铰接, 所述变幅油缸的两端分别铰接于所述起重 臂及所述基座上, 所述动力机构的数量仅为一个, 所述动力机构固定在所 述基座上, 并与所述杆部相铰接, 所述前拉紧机构连接于所述超起桅杆及 所述起重臂的头部之间, 所述后拉紧机构连接于所述超起桅杆及所述起重 臂的尾部之间。 In order to overcome the above-mentioned drawbacks and deficiencies of the prior art, an object of the present invention is to provide a super-lifting device comprising a super-lifting mast, a front tensioning mechanism and a rear tensioning mechanism, the super-lifting mast comprising a base, a rod, a slewing cylinder and a power mechanism, the pedestal is fixed on the hoisting arm of the crane, one end of the shank is hinged to the base, and two ends of the slewing cylinder are respectively hinged to the jib and The number of the power mechanisms is only one on the base, and the power mechanism is fixed at the On the base, and hinged with the rod portion, the front tensioning mechanism is connected between the super-lifting mast and the head of the lifting arm, and the rear tensioning mechanism is connected to the super Between the mast and the tail of the boom.
进一步地, 所述动力机构包括一个伸缩油缸及两个连杆, 所述伸缩油 缸固定在所述基座上, 所述每一连杆的一端铰接在所述杆部上, 另一端铰 接于所述伸缩油缸上。  Further, the power mechanism includes a telescopic cylinder and two connecting rods, and the telescopic cylinder is fixed on the base, one end of each link is hinged on the rod portion, and the other end is hinged to the Said on the telescopic cylinder.
进一步地, 所述动力机构包括双向伸缩油缸, 所述双向伸缩油缸固定 在所述基座上, 该双向伸缩油缸的两个伸缩臂铰接于所述杆部并在所述杆 部上滑动。  Further, the power mechanism includes a bi-directional telescopic cylinder fixed to the base, and two telescopic arms of the bi-directional telescopic cylinder are hinged to the rod and slide on the rod.
进一步地,所述杆部上分别设有导轨,每一伸缩臂与所述导轨相连接, 并滑动及转动地相配合。  Further, the rod portions are respectively provided with guide rails, and each telescopic arm is connected with the guide rails and slidably and rotatably cooperates.
进一步地, 所述杆部设有卷筒机构、 第一转向部件及第二转向部件, 所述前拉紧机构包括第一线性部件、 第二线性部件及第三转向部件, 所述 第一线性部件连接与所述起重臂的头部, 所述第二线性部件的一端与所述 卷筒机构相连接, 并依次经过所述第一转向部件、 第三转向部件及第二转 向部件后, 所述第二线性部件的另一端固定在所述杆部上。  Further, the rod portion is provided with a reel mechanism, a first steering member and a second steering member, and the front tensioning mechanism includes a first linear member, a second linear member and a third steering member, the first linear a component is coupled to the head of the boom, and one end of the second linear component is connected to the reel mechanism, and sequentially passes through the first steering component, the third steering component, and the second steering component, The other end of the second linear member is fixed to the stem.
进一步地, 所述卷筒机构设置于所述杆部上, 并位于所述杆部邻近底 端的位置。  Further, the reel mechanism is disposed on the stem portion and located at a position adjacent to the bottom end of the stem portion.
进一步地, 所述杆部上设有预紧油缸, 所述第二线性部件的另一端通 过与所述预紧油缸连接而固定在所述^ ^干部上。  Further, a pre-tightening cylinder is disposed on the rod portion, and the other end of the second linear member is fixed to the stem portion by being connected to the pre-tightening cylinder.
进一步地, 所述后拉紧机构一端设置于所述杆部上, 另一端设置与所 述起重臂的尾部或设置在起重机的转台上。  Further, one end of the rear tensioning mechanism is disposed on the rod portion, and the other end is disposed on a tail portion of the lifting arm or on a turntable of the crane.
本发明还提供一种应用上述超起装置的起重机。  The present invention also provides a crane to which the above-described super-lifting device is applied.
与现有技术相比, 本发明的超起装置中仅设有一个动力机构, 该动力 机构可同时驱动两个杆部展开, 因此可以保证两个桅杆的同时展开, 使两 个桅杆展开的角度一致, 从而使得与两个桅杆相配合的钢丝绳受力一致, 从而达到控制旁弯的效果。  Compared with the prior art, the super-lifting device of the present invention only has one power mechanism, and the power mechanism can simultaneously drive the two rods to be deployed, thereby ensuring the simultaneous deployment of the two masts and the angle at which the two masts are deployed. Consistent, so that the wire rope matched with the two masts is consistent in force, thereby achieving the effect of controlling the side bend.
附图说明 DRAWINGS
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对 实施例或现有技术描述中所需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员 来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的 附图。 In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, obviously, The drawings in the following description are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.
图 1是本发明实施例的超起装置的结构示意图。  1 is a schematic structural view of a super-lifting device according to an embodiment of the present invention.
图 2是本发明第一较佳实施例的 桅杆的结构示意图。  Fig. 2 is a schematic view showing the structure of a mast according to a first preferred embodiment of the present invention.
图 3是本发明第二较佳实施例的 桅杆的结构示意图。  Figure 3 is a schematic view showing the structure of a mast of a second preferred embodiment of the present invention.
具体实施方式 detailed description
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没 有作出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的 范围。  The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
图 1所示是本发明一实施例的超起装置的结构示意图。 本发明的超起 装置用于起重机中, 该起重机可以包括履带起重机或各种轮式起重机(如 汽车起重机、 全地面起重机、 越野轮胎起重机或随车起重机)等。 最优选 地, 本发明的超起装置用于全地面起重机中, 从而适应大吨位的起重作业 需求以及不同路面的行驶要求。  1 is a schematic structural view of a super-lifting device according to an embodiment of the present invention. The super-lifting device of the present invention is used in a crane, which may include a crawler crane or various wheeled cranes (e.g., a truck crane, an all-terrain crane, an off-road tire crane, or a truck-mounted crane). Most preferably, the super-lifting device of the present invention is used in an all-terrain crane to accommodate large tonnage lifting operations and different road driving requirements.
请结合参阅图 1及图 2 , 本发明的¾¾装置固定于起重机的起重臂 9 上, 以改善起重臂 9的受力状态, 提高起重机的起重量和承载能力。 该超 起装置包括超起桅杆 1、 前拉紧机构 3和后拉紧机构 5。  Referring to Figures 1 and 2, the 3⁄4⁄4 device of the present invention is fixed to the crane's boom 9 to improve the stress state of the boom 9, and to improve the crane's lifting capacity and carrying capacity. The super-lifting device includes a super-lifting mast 1, a front tensioning mechanism 3, and a rear tensioning mechanism 5.
本发明第一较佳实施例的该超起桅杆 1包括基座 11、杆部 12、动力机 构及变幅油缸 15。 该基座 11固定在该起重臂 9的中部。 所述杆部 12的数 量优选为两个, 所述杆部 12分别铰接在该基座 11 的两端。 每一杆部 12 上设有卷筒机构 120、第一转向部件 121及第二转向部件 122。该卷筒机构 120设置于该杆部 12邻近底端的位置。 本发明的卷筒机构 120可以设置在 所述杆部 12上,也可以设置于起重机的其它机械部分,本发明并不受限于 此。 优选地, 该卷筒机构 120设置在该杆部 12上。 该卷筒机构 120可以采 用多种旋转式执行部件驱动,本发明并不受限于此。采用上述技术方案后, 本发明调整了该超起桅杆 1整体重心, 在工作过程中, 立起的该超起桅杆 1挠度小, 在保证起重臂 9的受力状态得到改善的同时, 超起装置整体受 力状态也得到了改善。 该第一转向部件 121及第二转向部件 122设置于该 杆部 12远离该基座 11的一端。 The super-lifting mast 1 of the first preferred embodiment of the present invention includes a base 11, a rod portion 12, a power mechanism, and a horn cylinder 15. The base 11 is fixed to the middle of the boom 9. The number of the rod portions 12 is preferably two, and the rod portions 12 are respectively hinged at both ends of the base 11. Each of the rod portions 12 is provided with a reel mechanism 120, a first steering member 121, and a second steering member 122. The reel mechanism 120 is disposed at a position where the rod portion 12 is adjacent to the bottom end. The reel mechanism 120 of the present invention may be disposed on the stem portion 12 or may be disposed on other mechanical portions of the crane, and the present invention is not limited thereto. Preferably, the reel mechanism 120 is disposed on the stem portion 12. The reel mechanism 120 can be driven by a variety of rotary actuators, and the invention is not limited thereto. After adopting the above technical solution, the present invention adjusts the overall center of gravity of the super-lifting mast 1, and during the working process, the raised mast 10 has a small deflection, and while ensuring the stress state of the boom 9 is improved, The whole device The state of force has also improved. The first steering member 121 and the second steering member 122 are disposed at one end of the rod portion 12 away from the base 11 .
所述动力机构包括伸缩油缸 1 3及连杆 14。 该伸缩油缸 1 3的数量仅为 一个, 其一端固定在该基座 11上。 所述连杆 14的数量优选为两个, 每一 连杆 14的一端铰接在该杆部 12上,另一端铰接于该伸缩油缸 1 3远离该基 座 11的一端。 该伸缩油缸 1 3可驱动所述连 4干 14相对所述 ^干部 12转动, 从而使所述杆部 12转动而展开形成倒 "八" 字形。 该变幅油缸 15的数量 仅为一个, 其一端铰接于该基座 1 1上, 另一端铰接于该起重臂 9上。 该变 幅油缸 15的伸缩可以实现杆部 12俯仰角的调整。  The power mechanism includes a telescopic cylinder 13 and a connecting rod 14. The number of the telescopic cylinders 13 is only one, and one end thereof is fixed to the base 11. The number of the links 14 is preferably two, one end of each link 14 is hinged to the rod portion 12, and the other end is hinged to an end of the telescopic cylinder 13 away from the base 11. The telescopic cylinder 13 drives the joint 14 to rotate relative to the stem portion 12, thereby rotating the stem portion 12 to form an inverted "eight" shape. The number of the variator cylinders 15 is only one, one end of which is hinged to the base 1 1 and the other end of which is hinged to the hoisting arm 9. The expansion and contraction of the slewing cylinder 15 allows the adjustment of the pitch angle of the shank portion 12.
该前拉紧机构 3的数量为两套,其用于将对应的杆部 12进行拉紧。每 一前拉紧机构 3包括第一线性部件 31、 第二线性部件 32及第三转向部件 33。 该第一线性部件 31及第二线性部件 32可以为钢丝绳或铁链等多种材 质的线性承力部件,本发明并不受限于此。该第三转向部件 33优选为动滑 轮。该第一线性部件 31的两端分别与该起重臂 9的头部及该第三转向部件 33相连接。 该第二线性部件 32的一端与该卷筒机构 120相连接, 并依次 经过该第一转向部件 121、 第三转向部件 33及第二转向部件 122后, 该第 二线性部件 32 的另一端固定在杆部 12上。 优选地, 该第二线性部件 32 的另一端可固定在杆部 12上的预紧油缸(图未示)上。 在不同的实际工况 下, 可以根据需要, 通过该预紧油缸的伸缩运动调整该第二线性部件 32 及该第一线性部件 31的拉力。  The number of the front tensioning mechanisms 3 is two sets for tightening the corresponding rod portions 12. Each of the front tensioning mechanisms 3 includes a first linear member 31, a second linear member 32, and a third steering member 33. The first linear member 31 and the second linear member 32 may be linear load-bearing members of various materials such as a wire rope or an iron chain, and the present invention is not limited thereto. The third steering member 33 is preferably a moving pulley. Both ends of the first linear member 31 are connected to the head of the boom 9 and the third steering member 33, respectively. One end of the second linear member 32 is connected to the reel mechanism 120, and sequentially passes through the first steering member 121, the third steering member 33 and the second steering member 122, and the other end of the second linear member 32 is fixed. On the stem portion 12. Preferably, the other end of the second linear member 32 is fixed to a pre-tightening cylinder (not shown) on the rod portion 12. Under different actual working conditions, the tension of the second linear member 32 and the first linear member 31 can be adjusted by the telescopic movement of the pre-tightening cylinder as needed.
该后拉紧机构 5的数量为两套,其一端设置在对应的杆部 12上, 另一 端设置在起重臂 9的尾部或设置在起重机的转台等机械部件上。 该后拉紧 机构 5可以包括绳排以及伸缩油缸或收紧绞车等结构, 本发明并不受限于 此。 前拉紧机构对起重臂 9的头部施加拉力, 后拉紧机构 5对超起桅杆 1 施加拉力, 从而实现超起桅杆 1整体的平衡。  The number of the rear tensioning mechanisms 5 is two, one end of which is disposed on the corresponding rod portion 12, and the other end is disposed at the tail of the boom 9 or on a mechanical component such as a turntable of the crane. The rear tensioning mechanism 5 may include a rope row and a structure such as a telescopic cylinder or a tightening winch, and the present invention is not limited thereto. The front tensioning mechanism applies a pulling force to the head of the boom 9, and the rear tensioning mechanism 5 applies a pulling force to the overhanging mast 1, thereby achieving the overall balance of the super-lifting mast 1.
请参阅图 3 , 本发明第二较佳实施例的该超起桅杆包括基座 61、 杆部 62、 伸缩油缸支座 63、 动力机构及变幅油缸 65。 该基座 61固定在该起重 臂 9的中部。 所述杆部 62的结构与第一较佳实施例的杆部 12的结构及作 用大致相同, 不同之处在于每一杆部 62上设有导轨 621 , 所述导轨 621用 于与该双向伸缩油缸滑动并转动配合。 该伸缩油缸支座 63 固定在该基座 61上。 该动力机构为双向伸缩油缸, 其可驱动所述^干部 62展开, 该双向 伸缩油缸包括缸体 641及两个伸缩臂 642 , 该缸体 641 固定在该伸缩油缸 支座 63上, 所述伸缩臂 642设置于该缸体 641 的两端, 每一伸缩臂 642 远离该缸体 641的一端与对应的导轨 621相连接并滑动及转动地相配合。 所述伸缩臂 642在伸缩的过程中,所述杆部 62相对所述伸缩臂 642进行滑 动并转动。 该变幅油缸 65的数量仅为一个, 其一端铰接在该基座 61上, 另一端铰接于该起重臂 9上。 每一杆部 62上设有卷筒机构 620、 第一转向 部件 621及第二转向部件 622。 Referring to FIG. 3, the super-lifting mast of the second preferred embodiment of the present invention includes a base 61, a rod portion 62, a telescopic cylinder support 63, a power mechanism, and a horn cylinder 65. The base 61 is fixed to the middle of the boom 9. The structure of the rod portion 62 is substantially the same as that of the rod portion 12 of the first preferred embodiment. The difference is that each of the rod portions 62 is provided with a guide rail 621 for engaging with the bidirectional expansion and contraction. The cylinder slides and rotates. The telescopic cylinder support 63 is fixed to the base 61 on. The power mechanism is a bidirectional telescopic cylinder that can drive the trunk 62 to be deployed. The bidirectional telescopic cylinder includes a cylinder 641 and two telescopic arms 642 fixed to the telescopic cylinder mount 63. The arms 642 are disposed at two ends of the cylinder block 641. One end of each telescopic arm 642 away from the cylinder block 641 is connected to the corresponding rail 621 and slidably and rotatably cooperates. During the expansion and contraction of the telescopic arm 642, the rod portion 62 slides and rotates relative to the telescopic arm 642. The number of the variet cylinders 65 is only one, one end of which is hinged to the base 61 and the other end of which is hinged to the hoisting arm 9. Each of the rod portions 62 is provided with a reel mechanism 620, a first steering member 621, and a second steering member 622.
本发明第二较佳实施例的该超起桅杆与该前拉紧机构 3和后拉紧机构 5的连接关系与第一较佳实施例的该超起桅杆 1与该前拉紧机构 3和后拉 紧机构 5的连接关系相同, 故不赘述。  The connection relationship between the super-lifting mast and the front tensioning mechanism 3 and the rear tensioning mechanism 5 of the second preferred embodiment of the present invention, and the super-lifting mast 1 and the front tensioning mechanism 3 of the first preferred embodiment The connection relationship of the rear tensioning mechanism 5 is the same, and therefore will not be described again.
可以理解, 该伸缩油缸支座 63可以视为该基座 11的一部分, 因此, 该双向伸缩油缸可以认为是固定在该基座 11上的。  It will be understood that the telescopic cylinder mount 63 can be considered part of the base 11, and therefore, the bi-directional telescopic cylinder can be considered to be fixed to the base 11.
除了前述起重机超起装置, 本发明还提供一种包括所述超起装置的起 重机。 该起重机的其它结构可以参考现有技术, 本文在此不再赘述。 优选 地, 该起重机具体为全地面起重机。  In addition to the aforementioned crane super-lifting device, the present invention also provides a crane including the super-lifting device. Other structures of the crane can refer to the prior art, and are not described herein again. Preferably, the crane is in particular an all terrain crane.
综上, 本发明的起重机及其超起装置与现有技术相比具有以下优点: 本发明的超起装置中仅设有一个动力机构, 该动力机构可同时驱动两 个杆部展开, 因此可以保证两个桅杆的同时展开, 使两个桅杆展开的角度 一致, 从而使得与两个桅杆相配合的钢丝绳受力一致, 达到控制旁弯的效 果。 该超起装置因为只有一个动力机构, 因此结构筒单、 重量较轻。  In summary, the crane of the present invention and the super-lifting device thereof have the following advantages compared with the prior art: In the super-lifting device of the present invention, only one power mechanism is provided, which can simultaneously drive the two rods to expand, so It is ensured that the two masts are unfolded at the same time, so that the angles of the two masts are unfolded, so that the wire ropes matched with the two masts are consistent in force, and the effect of controlling the side bend is achieved. Since the super-lifting device has only one power mechanism, the structure is simple and light in weight.
另外, 本发明将卷筒机构设置在超起桅杆上, 并位于超起桅杆邻近底 端的位置, 调整了超起桅杆整体重心。 在工作过程中, 立起的超起桅杆挠 度小, 在保证起重臂的受力状态得到改善的同时, 超起装置整体受力状态 也得到了改善。  Further, the present invention arranges the reel mechanism on the super-lifting mast and is located at a position adjacent to the bottom end of the super-lifting mast to adjust the overall center of gravity of the super-lifting mast. During the working process, the raised super-lifting mast has a small deflection, and while the force state of the boom is improved, the overall force state of the super-lifting device is also improved.
以上所述仅为本发明的较佳实施例而已, 并不用以限制本发明, 凡在 本发明的精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包 含在本发明的保护范围之内。  The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Claims

1、 一种起重机超起装置, 其特征在于: 包括超起桅杆(1 )、 前拉紧机 构( 3 )、 后拉紧机构( 5 ), 所述超起桅杆 ( 1 )包括基座( 11 )、 杆部( 12 )、 变幅油缸( 15 )及动力机构, 所述基座( 11 ) 固定于起重机的起重臂( 9 ) 上, 所述杆部 ( 12 ) 的一端与所述基座( 11 )铰接, 所述变幅油缸( 15 ) 的两端分别铰接于所述起重臂( 9 )及所述基座( 11 )上, 所述动力机构的 数量仅为一个,所述动力机构固定在所述基座(11 )上,并与所述杆部(12 ) 相铰接, 所述前拉紧机构( 3 )连接于所述超起桅杆 ( 1 )及所述起重臂( 9 ) 的头部之间, 所述后拉紧机构 ( 5 )连接于所述超起桅杆 ( 1 )及所述起重 臂(9 ) 的尾部之间。  A crane super-lifting device, comprising: a super-lifting mast (1), a front tensioning mechanism (3), a rear tensioning mechanism (5), the super-lifting mast (1) comprising a base (11) a shank (12), a slewing cylinder (15) and a power mechanism, the pedestal (11) being fixed to a crane (9) of the crane, one end of the shank (12) and the base The seat (11) is hinged, and two ends of the slewing cylinder (15) are respectively hinged on the boom (9) and the base (11), and the number of the power mechanisms is only one, a power mechanism is fixed on the base (11) and hinged with the rod portion (12), the front tensioning mechanism (3) is coupled to the super-lifting mast (1) and the lifting arm Between the heads of (9), the rear tensioning mechanism (5) is coupled between the overhanging mast (1) and the tail of the boom (9).
2、根据权利要求 1所述的超起装置, 其特征在于, 所述动力机构包括 一个伸缩油缸( 13 )及两个连杆( 14 ), 所述伸缩油缸( 13 ) 固定在所述基 座( 11 )上, 所述每一连杆( 14 ) 的一端铰接在所述杆部 ( 12 )上, 另一 端铰接于所述伸缩油缸(13 )上。  The super-lifting device according to claim 1, wherein the power mechanism comprises a telescopic cylinder (13) and two connecting rods (14), and the telescopic cylinder (13) is fixed to the base (11), one end of each of the links (14) is hinged to the stem portion (12), and the other end is hinged to the telescopic cylinder (13).
3、根据权利要求 1所述的超起装置, 其特征在于, 所述动力机构包括 双向伸缩油缸, 所述双向伸缩油缸固定在所述基座( 11 )上, 该双向伸缩 油缸的两个伸缩臂( 642 )铰接于所述杆部并在所述杆部上滑动。  The super-lifting device according to claim 1, wherein the power mechanism comprises a bi-directional telescopic cylinder, the bi-directional telescopic cylinder is fixed on the base (11), and two telescopic cylinders are telescopic An arm (642) is hinged to the stem and slides over the stem.
4、根据权利要求 3所述的超起装置, 其特征在于, 所述杆部上分别设 有导轨, 每一伸缩臂与所述导轨相连接, 并滑动及转动地相配合。  The super-lifting device according to claim 3, wherein the rod portions are respectively provided with guide rails, and each telescopic arm is connected to the guide rails and slidably and rotatably engaged.
5、根据权利要求 1-4中任一项所述的超起装置, 其特征在于, 所述杆 部( u )设有卷筒机构( uo )、第一转向部件( i )及第二转向部件( i ), 所述前拉紧机构 ( 3 ) 包括第一线性部件( 31 )、 第二线性部件( 32 )及第 三转向部件 ( 33 ) , 所述第一线性部件 ( 31 )连接与所述起重臂( 9 ) 的头 部, 所述第二线性部件( 32 )的一端与所述卷筒机构( 120 )相连接, 并依 次经过所述第一转向部件( 121 )、第三转向部件( 33 )及第二转向部件( 122 ) 后, 所述第二线性部件 (32 ) 的另一端固定在所述杆部 (12 )上。  The super-lifting device according to any one of claims 1 to 4, characterized in that the rod portion (u) is provided with a reel mechanism (uo), a first steering member (i) and a second steering The component (i), the front tensioning mechanism (3) comprises a first linear component (31), a second linear component (32) and a third steering component (33), the first linear component (31) being connected a head of the lifting arm (9), one end of the second linear member (32) is connected to the reel mechanism (120), and sequentially passes through the first steering member (121), the third After the steering member (33) and the second steering member (122), the other end of the second linear member (32) is fixed to the rod portion (12).
6、根据权利要求 5所述的超起装置,其特征在于,所述卷筒机构( 120 ) 设置于所述杆部 (12 )上, 并位于所述杆部 (12 )邻近底端的位置。  The super-lifting device according to claim 5, characterized in that the reel mechanism (120) is disposed on the stem portion (12) and located at a position adjacent to the bottom end of the stem portion (12).
7、 根据权利要求 6所述的超起装置, 其特征在于, 所述杆部(12 )上 设有预紧油缸, 所述第二线性部件(32 ) 的另一端通过与所述预紧油缸连 接而固定在所述杆部 (u )上。 The super-lifting device according to claim 6, wherein the rod portion (12) is provided with a pre-tightening cylinder, and the other end of the second linear member (32) passes through the pre-tightening cylinder Even It is then fixed to the stem (u).
8、根据权利要求 7中任一项所述的超起装置, 其特征在于, 所述后拉 紧机构( 5 )一端设置于所述杆部( 12 )上, 另一端设置与所述起重臂( 9 ) 的尾部或设置在起重机的转台上。  The super-lifting device according to any one of claims 7 to 4, wherein one end of the rear tensioning mechanism (5) is disposed on the rod portion (12), and the other end is disposed and lifted The tail of the arm (9) is placed on the turntable of the crane.
9、 一种起重机, 其特征在于, 所述起重机包括如权利要求 1-8中任一 项所述的超起装置。  A crane, characterized in that the crane comprises the super-lifting device according to any one of claims 1-8.
PCT/CN2012/074244 2011-11-21 2012-04-18 Crane and lifting extension apparatus thereof WO2013075454A1 (en)

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