WO2012159373A1 - 起重臂架系统及包含该起重臂架系统的起重设备 - Google Patents

起重臂架系统及包含该起重臂架系统的起重设备 Download PDF

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Publication number
WO2012159373A1
WO2012159373A1 PCT/CN2011/078265 CN2011078265W WO2012159373A1 WO 2012159373 A1 WO2012159373 A1 WO 2012159373A1 CN 2011078265 W CN2011078265 W CN 2011078265W WO 2012159373 A1 WO2012159373 A1 WO 2012159373A1
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WO
WIPO (PCT)
Prior art keywords
jib
luffing
support beam
hoisting
disposed
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2011/078265
Other languages
English (en)
French (fr)
Inventor
张建军
李义
李英智
郭纪梅
蒋冬冬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
Original Assignee
Hunan Zoomlion Special Vehicle Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
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 Hunan Zoomlion Special Vehicle Co Ltd, Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd filed Critical Hunan Zoomlion Special Vehicle Co Ltd
Publication of WO2012159373A1 publication Critical patent/WO2012159373A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B66C23/64Jibs
    • B66C23/66Outer or upper end constructions

Definitions

  • the invention relates to the field of lifting machinery, and in particular to a lifting boom system and lifting apparatus including the same device.
  • BACKGROUND OF THE INVENTION Wind power generation systems are gaining more and more attention, and the installation of their equipment is a hot industry in the field of engineering lifting equipment. Efficient assembly and transition of lifting equipment, realization of lifting height and precise positioning of wind power equipment are the key directions that engineering lifting equipment is increasingly pursuing.
  • the hoisting boom system of the existing lifting equipment mainly comprises a main telescopic arm, a jib, a fixed angle jib, a super-lifting mechanism, etc., during the working process of the jib system, mainly through the main telescopic arm
  • the variable amplitude cylinder controls the main telescopic arm to perform amplitude variation
  • the variable amplitude cylinder control jib connected to the auxiliary arm performs amplitude variation, thereby realizing variable amplitude control of the jib boom system.
  • the jib boom system can realize lifting height and lifting amount when the wind power equipment is installed, and the working amplitude is changed mainly by the main telescopic arm.
  • the jib boom system uses a variable amplitude cylinder to control the main telescopic arm for amplitude variation, poor amplitude variation accuracy, and low assembly efficiency.
  • the variable amplitude cylinder is easy to shake during the variable amplitude process, which makes it impossible to achieve precise positioning requirements.
  • the variable amplitude of the cylinder is large and difficult to control. It is difficult to achieve precise control when fine-tuning the jib frame system, and it needs to be accurately positioned by external force at the construction site, which brings a lot of inconvenience to the installation of the wind power equipment.
  • the present invention is directed to a jib boom system and a hoisting apparatus including the jib rack system, which has high variable amplitude precision, can realize stepless variable amplitude hoisting of the hoisting equipment, and achieves lifting of heavy objects. accurate locating.
  • a jib system comprising: a main arm; a support beam disposed at a top end of the main arm; and a jib, one end rotatably disposed at a top end of the main arm
  • the method further includes: a luffing mechanism, including a luffing pulley block, the luffing mechanism is connected to the auxiliary arm at one end, and the other end is disposed on the supporting beam by the fixed pulley block.
  • the hoisting boom system further includes a tower head, the tower head is disposed at a top end of the main arm, and the support beam is disposed on the tower head.
  • a telescopic mechanism is further disposed under the support beam, and one end of the telescopic mechanism is hinged on the tower head, and one end is hinged at a lower end of the support beam.
  • the luffing mechanism further comprises a luffing sling, one end of the slinging rope is connected to the supporting beam around the variable amplitude pulley block, and the other end is connected to the first hoist or the oil cylinder.
  • one end of the variable amplitude pulley block is a fixed pulley block fixedly disposed on the support beam, and the other end is a movable pulley block, and the movable pulley block is provided with a luffing cable connected to the top end of the auxiliary arm.
  • the hoisting boom system further includes a damper telescopic support structure, one end of the damper telescopic support structure is connected to the support beam, and the other end is connected to the jib.
  • the damper telescopic support structure is a hydro-pneumatic spring cylinder.
  • at least one type of arm joint is inserted in the tower head.
  • the hoisting boom system further includes a super-lifting mechanism, and the super-lifting mechanism is disposed at a lower portion of the main arm.
  • the hoisting boom system further includes a hoisting wire rope, one end of the hoisting wire rope is connected to the second hoisting machine, and the other end is connected to the hoisting weight by a supporting pulley.
  • a lifting apparatus including the above-described hoisting boom system.
  • the jib boom system includes a slewing mechanism having one end connected to the jib and the other end being disposed on the support beam by a fixed pulley, and the slewing mechanism includes a slewing pulley set.
  • the variable amplitude pulley block adjusts the amplitude of the jib by the luffing sling wound thereon.
  • FIG. 1 shows a schematic structural view of a jib boom system according to an embodiment of the present invention
  • 2 is a partially enlarged schematic view showing the A-direction of the jib system of the jib system according to the embodiment of the present invention
  • FIG. 3 is a schematic view of the bottom view according to FIG. 2
  • FIG. 1 shows a schematic structural view of a jib boom system according to an embodiment of the present invention
  • 2 is a partially enlarged schematic view showing the A-direction of the jib system of the jib system according to the embodiment of the present invention
  • FIG. 3 is a schematic view of the bottom view according to FIG. 2
  • a super-lifting mechanism 3 is disposed at a lower portion of the main arm 1, and the super-lifting mechanism 3 is a supporting mechanism laterally extending at an intermediate position of the main arm 1 to improve the parallel geometric relationship between the main arm 1 and the wire cable, and simultaneously
  • the starting mechanism is connected with the counterweight to form a stable shape of the double triangle, which increases the stability of the boom of the whole machine, thereby improving the performance of the lifting boom system.
  • the main arm 1 is provided with a tower head 2, and the tower head 2 is fixed on the top of the main arm 1 by bolts, and has a laterally extending support beam 21.
  • the support beam 21 is a triangular support frame, and the structure is stable and reliable.
  • the support beam 21 may be composed of a truss structure or a box structure.
  • the support beam 21 may be provided with a rope structure or other components, thereby having a coupling super-lifting mechanism, a coupling main arm, a coupling jib, a coupling jib, and a support. Anti-backward struts and other functions.
  • a jib 4 is rotatably disposed on the tower head 2, one end of which is hinged to the tower head 2, and the other end is coupled to the support beam 21 via a luffing mechanism 7.
  • the support beam 21 may also be disposed directly at the top end of the main arm 1, and the sub-arm 4 may also be rotatably disposed on the top end of the main arm 1.
  • the telescopic mechanism 22 may be a telescopic cylinder or a telescopic cylinder, or other telescopic structure, and forms a supporting structure for the supporting beam 21 to improve the structural strength of the supporting beam 21, and at the same time, the inclination angle of the supporting beam 21 can be adjusted as needed to satisfy the actual situation. Operational needs.
  • the slewing mechanism 7 includes a slewing pulley set 71. One end of the slewing pulley set 71 is a fixed pulley block fixedly disposed on the support beam 21, and the other end is a movable pulley block.
  • the movable pulley block is provided with a variable amplitude puller connected to the top end of the jib arm 4. Cable 73.
  • the variator block 71 is capable of converting a large distance movement of the sling 72 into a small distance change acting on the jib 4, thereby achieving fine adjustment of the sag angle of the jib 4, improving the jib 4 The accuracy of the amplitude.
  • By adjusting the number of pulleys of the variable amplitude pulley block 71 it is possible to select an appropriate variable amplitude accuracy as needed, and therefore, it is possible to satisfy the requirements of different variable amplitude accuracy, and has better applicability.
  • a cable with the other end connected to the outside of the support beam 21 is further provided for limiting the maximum amplitude of the auxiliary arm 4, preventing the rotation angle of the auxiliary arm 4 from being excessively large, causing excessive amplitude and variation.
  • the angle is an angle A formed by the extension direction of the sub-arm 4 and the main arm 1.
  • a damper telescopic support structure 6 is further disposed between the jib 4 and the support beam 21, one end of which is disposed inside the support beam 21, and the other end is disposed below the jib 4.
  • the gradual angle change of the jib 4 can be realized, and the jib 4 can be prevented from having a large angular hop, and the smooth angle change of the jib 4 of the hoisting device can be realized.
  • the damper telescopic support structure 6 is an oil and gas spring cylinder
  • the oil and gas spring cylinder combines oil and gas, and utilizes the compressibility of the gas as an elastic component of the oil and gas suspension, and uses the flow resistance of the oil to achieve vibration reduction, and at the same time utilizes oil.
  • the incompressibility of the liquid enables more accurate movement and force transmission, and the control of various fluids is realized by the easy control of the oil flow. Therefore, the oil-gas spring cylinder not only has better elastic characteristics, but more importantly, it can easily achieve good control of the angular change of the jib 4.
  • the main arm 1 is a telescopic arm, and the telescopic adjustment of the main arm 1 can be conveniently realized, so that the main arm 1 is in an appropriate position.
  • the main arm 1 can also be a truss arm.
  • the hoisting boom system further includes a hoisting wire rope 8 which lifts the hoisting weight through the supporting pulleys respectively disposed on the supporting beam 21 and the jib 4, and the other end of which is connected to the second hoisting machine, Achieve smooth movement of lifting heavy objects and increase system stability.
  • a lifting apparatus according to the present invention includes the above-described hoisting boom system.
  • the working process of the jib system of this embodiment is as follows: When the main arm 1 is telescopic, the hoisting ropes are controlled, and the hoisting wire rope 8, the wire rope of the super-starting mechanism 3, and the slinging rope 72 are all released. At this time, the wire ropes of the ropes have a certain pre-tightening force to prevent the hoisting machine. rope. After the main arm 1 is retracted into position, the hoisting wire rope 8 is tensioned according to the hoisting demand, the wire rope of the super-lifting mechanism 3 is fully tensioned, and the slinging rope 72 is in a pre-tightening state, and there is still a certain pre-tightening force, that is, at this time.
  • the hoisting weight is initially finely adjusted by the luffing mechanism 7, and the cable 5 is unloaded at this time, and the luffing angle A is adjusted mainly by the luffing mechanism 7 and the damper telescopic support structure 6.
  • the angle of the main arm 1 at this time remains unchanged, and the jib 4 is tensioned and contracted by the first hoist to make the jib 4
  • the angle A with the extending direction of the main arm 1 is changed, and the stepless change of the jib 4 in the A angle range and the precise mounting of the hoisting weight are achieved.
  • the jib boom system includes a luffing mechanism having one end connected to the sub-arm and the other end being disposed on the support beam by a fixed pulley.
  • the luffing mechanism includes a luffing pulley block.
  • the variable amplitude pulley block adjusts the amplitude of the jib by the luffing sling wound thereon. Since the luffing pulley block has a plurality of pulleys, the large-scale movement of the luffing sling can be converted into a small adjustment of the jib to achieve precise adjustment of the jib angle.
  • the expansion and contraction of the sling can be adjusted by the contraction of the hoist, and the stepless variable angle adjustment of the jib can be realized, which is more flexible and convenient.
  • the jib boom system further includes a damped telescopic support structure that is fixedly disposed on the support beam at one end and connected to the jib at the other end, and can adaptively adjust the jib during the stepless angle adjustment process of the jib to prevent A large jerk angle appears in the jib angle.
  • the damper telescopic support structure can limit the jib to prevent the jib from over-expanding and avoid accidents.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Jib Cranes (AREA)

Abstract

公开了一种起重臂架系统及包含该起重臂架系统的起重设备。该起重臂架系统包括:主臂(1);支撑梁(21),设置在主臂(1)的顶端;变幅副臂(4),一端可转动地设置在主臂(1)上,以及变幅机构(7),包括变幅滑轮组(71),变幅机构(7)一端连接在副臂(4)上,另一端通过定滑轮组设置在支撑梁(21)上。该起重臂架系统变幅精度高,组装简单方便,能够实现起重设备的无级变幅度吊装,达到对起吊重物的精确定位。

Description

起重臂架系统及包含该起重臂架系统的起重设备 技术领域 本发明涉及起重机械领域, 具体而言, 涉及一种起重臂架系统及包含该起重臂架 系统的起重设备。 背景技术 风力发电系统日益得到人们的重视, 其设备的安装是如今工程起重设备领域的热 门行业。 起重设备高效组装与转场、 实现风电设备起吊高度与精确定位是工程起重设 备日益追求的重点方向。 现有起重设备的起重臂架系统主要包括主伸缩臂、 副臂、 固定角度副臂、 超起机 构等, 在起重臂架系统的工作过程中, 主要通过连接在主伸缩臂上的变幅油缸控制主 伸缩臂进行变幅, 通过连接在副臂上的变幅油缸控制副臂进行变幅, 从而实现起重臂 架系统的变幅控制。此种起重臂架系统在风电设备安装时能够实现起吊高度和起吊量, 并主要通过主伸缩臂进行变幅实现工作幅度的变化。 这种起重臂架系统采用变幅油缸控制主伸缩臂进行变幅, 变幅精度较差, 组装效 率低, 在变幅过程中变幅油缸易抖动, 造成无法实现精确定位要求, 此外变幅油缸的 变幅幅度大, 不易控制, 难以在对起重臂架系统进行微调时实现精确控制, 并且需要 在施工现场通过外力进行精确定位, 对风电设备的安装带来了许多的不便。 发明内容 本发明旨在提供一种起重臂架系统及包含该起重臂架系统的起重设备, 变幅精度 高, 能够实现起重设备的无级变幅度吊装, 达到对起吊重物的精确定位。 为了实现上述目的, 根据本发明的一个方面, 提供了一种起重臂架系统, 包括: 主臂; 支撑梁, 设置在主臂的顶端; 副臂, 一端可转动地设置在主臂的顶端, 还包括: 变幅机构, 包括变幅滑轮组, 变幅机构一端连接在副臂上, 另一端通过定滑轮组设置 在支撑梁上。 进一步地, 起重臂架系统还包括塔头, 塔头设置在主臂的顶端, 支撑梁设置在塔 头上。 进一步地, 在支撑梁下方还设置有伸缩机构, 伸缩机构的一端铰接在塔头上, 一 端铰接在支撑梁的下端。 进一步地, 变幅机构还包括变幅吊绳, 变幅吊绳的一端绕经变幅滑轮组而连接在 支撑梁上, 另一端连接在第一卷扬机或油缸上。 进一步地, 变幅滑轮组的一端为固定设置在支撑梁上的定滑轮组, 另一端为动滑 轮组, 动滑轮组上设置有连接在副臂的顶端的变幅拉索。 进一步地, 起重臂架系统还包括阻尼伸缩支承结构, 阻尼伸缩支承结构的一端连 接在支撑梁上, 另一端连接在副臂上。 进一步地, 阻尼伸缩支承结构为油气弹簧缸。 进一步地, 在塔头中插接有至少一种臂节。 进一步地, 起重臂架系统还包括超起机构, 超起机构设置在主臂的下部。 进一步地, 起重臂架系统还包括起升钢丝绳, 起升钢丝绳的一端连接至第二卷扬 机, 另一端通过支承滑轮连接在起吊重物上。 根据本发明的另一方面, 提供了一种起重设备, 包括上述的起重臂架系统。 根据本发明的技术方案, 起重臂架系统包括有一端连接在副臂上, 另一端通过定 滑轮设置在支撑梁上的变幅机构, 变幅机构包括有变幅滑轮组。 变幅滑轮组通过缠绕 在其上的变幅吊绳对副臂的变幅角度进行调整。 由于变幅滑轮组具有多个滑轮, 可以 将变幅吊绳的大幅运动转换为对副臂的微小调整, 实现对副臂角度的精确调整。 并可 以通过卷扬机的收缩作用调整变幅吊绳的伸缩, 实现副臂的无级变角度调整, 更加灵 活方便。 起重臂架系统还包括一端固定设置在支撑梁上, 另一端连接在副臂上的阻尼 伸缩支承结构, 能够在副臂的无级变角度调整过程中, 使副臂实现自适应调整, 防止 副臂角度出现大的跳动度。 此外, 阻尼伸缩支承结构的能够对副臂进行限位, 防止副 臂变幅过度, 避免造成事故。 附图说明 构成本发明的一部分的附图用来提供对本发明的进一步理解, 本发明的示意性实 施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图中: 图 1示出了根据本发明的实施例的起重臂架系统的结构示意图; 图 2示出了根据本发明的实施例的起重臂架系统的变幅拉索的 A向局部放大结构 示意图; 图 3示出了根据图 2的仰视结构示意图; 图 4 示出了根据本发明的实施例的起重臂架系统的支撑梁的 B 向放大结构示意 图; 以及 图 5示出了根据图 4的仰视结构示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 如图 1、 图 2、 图 3、 图 4和图 5所示, 根据本发明的实施例, 起重臂架系统包括 主臂 1, 主臂 1为常规的伸缩式臂架系统或桁架式臂架系统。 在主臂 1的下部设置有 超起机构 3,超起机构 3是在主臂 1的中间位置侧向伸出的支撑机构,用以改善主臂 1 与钢丝拉索的平行几何关系, 同时超起机构与配重相连, 形成双三角稳固形式, 增加 整机吊臂稳定性, 从而提高起重臂架系统的性能。 在主臂 1 上设置有塔头 2, 塔头 2 通过螺栓固定设置在主臂 1的顶部, 并具有侧向伸出的支撑梁 21, 支撑梁 21为三角 形支撑架, 结构稳定,工作可靠。支撑梁 21可由桁架结构组成, 也可由箱型结构组成, 支撑梁 21上可以设置绳索结构, 或者其它组件, 从而具有联接超起机构、 联接主臂、 联接副臂、 联接变幅副臂、 支撑防后倾撑杆等功能。 在塔头 2上可转动地设置有副臂 4, 副臂 4的一端铰接在塔头 2上, 另一端通过变幅机构 7连接在支撑梁 21上。 支撑 梁 21也可以直接设置在主臂 1的顶端, 副臂 4也可转动地设置在主臂 1的顶端上。在 塔头 2上可以插接至少一个的臂节, 实现塔头 2的加长功能, 使起重臂架系统在遇到 塔头高度不够的情况下, 也能够通过添加臂节使塔头 2的高度满足起吊的实际需要, 因此具有更加广泛的适用性。 在支撑梁 21的下端设置有伸缩机构 22, 伸缩机构 22的一端铰接在塔头 2上, 另 一端铰接在支撑梁 21的下端。 伸缩机构 22可以为伸缩油缸或者伸缩气缸, 或者其它 伸缩结构, 对支撑梁 21形成支撑结构, 以提高支撑梁 21的结构强度, 同时可以在需 要时调整支撑梁 21的倾斜角度, 使其满足实际操作需要。 变幅机构 7包括有变幅滑轮组 71, 变幅滑轮组 71的一端为固定设置在支撑梁 21 上的定滑轮组, 另一端为动滑轮组, 动滑轮组上设置有连接在副臂 4顶端的变幅拉索 73。 变幅机构 7还包括有变幅吊绳 72, 变幅吊绳 72的一端绕经变幅滑轮组 71而连接 在支撑梁 21上, 另一端连接在第一卷扬机上, 并通过第一卷扬机的收缩控制变幅吊绳 72的伸缩。 卷扬机能够使得变幅吊绳 72的变化平稳, 保证副臂 4角度变化的稳定, 提高变幅精度。 第一卷扬机也可以用变幅油缸, 或者其它的收放装置来替换。 变幅滑轮组 71能够将变幅吊绳 72的较大距离的运动转换为作用在副臂 4上的很 小距离的变化, 从而实现对副臂 4的变幅角度的细微调整, 提高副臂 4的变幅精度。 通过对变幅滑轮组 71的滑轮个数的调整, 可以根据需要选择合适的变幅精度, 因此, 能够满足不同变幅精度的要求, 具有更好的适用性。 在副臂 4 的端部还设置有另一端连接在支撑梁 21 外侧的拉索, 用于限位副臂 4 的最大变幅角度, 防止副臂 4旋转角度过大, 造成变幅过度, 变幅角度为副臂 4与主 臂 1的延伸方向所形成的夹角 A。在副臂 4与支撑梁 21之间还设置有阻尼伸缩支承结 构 6, 其一端设置在支撑梁 21的内侧, 另一端设置在副臂 4的下方。 由于阻尼伸缩支 承结构 6本身的阻尼影响, 能够实现副臂 4的逐步变角度, 防止副臂 4出现较大的角 度跳度, 实现起重设备的副臂 4的平稳角度变化。 此外, 阻尼伸缩支承结构 6还能够 对副臂 4的变幅角度进行限位, 限定其最小变幅角度, 当阻尼伸缩支承结构 6在副臂 4的压力作用下回缩到达运动极限时, 对副臂 4的运动造成阻碍, 使副臂 4停止转动, 防止了副臂 4旋转角度过大, 造成变幅过度, 损坏起重臂架系统。 优选地, 阻尼伸缩支承结构 6为油气弹簧缸, 油气弹簧缸是将油和气结合, 利用 气体的可压缩性作为油气悬架的弹性元件, 利用油液的流动阻力实现减振, 同时又利 用油液的不可压缩性实现较为准确的运动和力的传递, 利用油液流动的易控性实现各 种大功率的控制。 因此, 油气弹簧缸不仅具有较好的弹性特性, 更重要的是它能方便 地实现副臂 4的角度变化的良好控制。 在本实施例中, 主臂 1为伸缩臂, 可以方便的实现对主臂 1的伸缩调整, 使主臂 1处于合适的位置。 主臂 1也可以为桁架臂。 起重臂架系统还包括有起升钢丝绳 8, 起升钢丝绳 8通过分别设置在支撑梁 21上 和副臂 4上的支承滑轮吊运起吊重物, 其另一端连接在第二卷扬机上, 能够实现起吊 重物的平稳运动, 增加系统的稳定性。 根据本发明的起重设备, 包括上述的起重臂架系统。 本实施例的起重臂架系统的工作过程如下: 主臂 1伸缩时, 控制各卷扬机使起升钢丝绳 8、 超起机构 3的钢丝绳以及变幅吊 绳 72均放绳, 此时各放绳的钢丝绳均存在一定的预紧力, 以防止卷扬机乱绳。 在主臂 1伸缩到位后, 起升钢丝绳 8根据吊重需求张紧, 超起机构 3的钢丝绳完 全张紧, 变幅吊绳 72处于预紧状态, 仍存在一定的预紧力, 即此时副臂 4与主臂 1 的延伸方向的夹角 A由拉索 5和阻尼伸缩支承结构 6确定, 在主臂 1的吊载变幅时, 夹角 A保持不变。 拉索 5在主臂 1开始伸缩前选定合适长度, 然后安装在支撑梁 21 和副臂 4之间, 在主臂 1的伸缩过程中以及吊载重物的粗调阶段, 主要通过拉索 5和 阻尼伸缩支撑结构 6定位副臂 4,。 在主臂 1伸缩到位后, 开始通过变幅机构 7对起吊 重物进行微调, 此时卸载拉索 5, 主要通过变幅机构 7和阻尼伸缩支承结构 6共同作 用来调整变幅角度 A。 当起吊重物起吊到一定高度和幅度后, 根据精确安装的需求, 此时的主臂 1的变 幅角度保持不变, 通过第一卷扬机张紧并收缩变幅吊绳 72, 使副臂 4与主臂 1的延伸 方向的夹角 A进行变化,实现副臂 4在 A角度范围内的无级变化和起吊重物的精确安 装。 从以上的描述中, 可以看出, 本发明上述的实施例实现了如下技术效果: 起重臂 架系统包括有一端连接在副臂上, 另一端通过定滑轮设置在支撑梁上的变幅机构, 变 幅机构包括有变幅滑轮组。 变幅滑轮组通过缠绕在其上的变幅吊绳对副臂的变幅角度 进行调整。 由于变幅滑轮组具有多个滑轮, 可以将变幅吊绳的大幅运动转换为对副臂 的微小调整, 实现对副臂角度的精确调整。 并可以通过卷扬机的收缩作用调整变幅吊 绳的伸缩, 实现副臂的无级变角度调整, 更加灵活方便。 起重臂架系统还包括一端固 定设置在支撑梁上, 另一端连接在副臂上的阻尼伸缩支承结构, 能够在副臂的无级变 角度调整过程中, 使副臂实现自适应调整, 防止副臂角度出现大的跳动度。 此外, 阻 尼伸缩支承结构的能够对副臂进行限位, 防止副臂变幅过度, 避免造成事故。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 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。

Claims

权 利 要 求 书
1. 一种起重臂架系统, 包括:
主臂 (1 );
支撑梁 (21 ), 设置在所述主臂 (1 ) 的顶端;
副臂 (4), 一端可转动地设置在所述主臂 (1 ) 的顶端, 其特征在于, 还包括:
变幅机构 (7), 包括变幅滑轮组 (71 ), 所述变幅机构 (7) —端连接在所 述副臂 (4) 上, 另一端通过定滑轮组设置在所述支撑梁 (21 ) 上。
2. 根据权利要求 1所述的起重臂架系统, 其特征在于, 还包括塔头 (2), 所述塔 头 (2) 设置在所述主臂 (1 ) 的顶端, 所述支撑梁 (21 ) 设置在所述塔头 (2) 上。
3. 根据权利要求 2所述的起重臂架系统, 其特征在于, 在所述支撑梁 (21 ) 下方 还设置有伸缩机构 (22), 所述伸缩机构 (22) 的一端铰接在所述塔头(2)上, 一端铰接在所述支撑梁 (21 ) 的下端。
4. 根据权利要求 1所述的起重臂架系统, 其特征在于, 所述变幅机构(7)还包括 变幅吊绳(72), 所述变幅吊绳(72) 的一端绕经所述变幅滑轮组(71 )而连接 在所述支撑梁 (21 ) 上, 另一端连接在第一卷扬机或油缸上。
5. 根据权利要求 4所述的起重臂架系统, 其特征在于, 所述变幅滑轮组 (71 ) 的 一端为固定设置在所述支撑梁 (21 ) 上的所述定滑轮组, 另一端为动滑轮组, 所述动滑轮组上设置有连接在所述副臂 (4) 的顶端的变幅拉索 (73 )。
6. 根据权利要求 5所述的起重臂架系统, 其特征在于, 还包括阻尼伸缩支承结构
(6), 所述阻尼伸缩支承结构 (6) 的一端连接在所述支撑梁(21 )上, 另一端 连接在所述副臂 (4) 上。
7. 根据权利要求 6所述的起重臂架系统,其特征在于,所述阻尼伸缩支承结构(6) 为油气弹簧缸。
8. 根据权利要求 2所述的起重臂架系统, 其特征在于, 在所述塔头(2)中插接有 至少一种臂节。 根据权利要求 1至 8中任一项所述的起重臂架系统, 其特征在于, 还包括超起 机构 (3 ), 所述超起机构 (3 ) 设置在所述主臂 (1 ) 的下部。 根据权利要求 9所述的起重臂架系统, 其特征在于, 还包括起升钢丝绳 (8), 所述起升钢丝绳(8 )的一端连接至第二卷扬机, 另一端通过支承滑轮连接在起 吊重物上。
11. 一种起重设备,其特征在于,包括权利要求 1至 10中任一项所述的起重臂架系 统
PCT/CN2011/078265 2011-05-20 2011-08-11 起重臂架系统及包含该起重臂架系统的起重设备 Ceased WO2012159373A1 (zh)

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