WO2013044485A1 - 配重平衡机构以及双臂架起重机 - Google Patents

配重平衡机构以及双臂架起重机 Download PDF

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Publication number
WO2013044485A1
WO2013044485A1 PCT/CN2011/080383 CN2011080383W WO2013044485A1 WO 2013044485 A1 WO2013044485 A1 WO 2013044485A1 CN 2011080383 W CN2011080383 W CN 2011080383W WO 2013044485 A1 WO2013044485 A1 WO 2013044485A1
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WO
WIPO (PCT)
Prior art keywords
balance beam
crane
balancing mechanism
counterweight
weight
Prior art date
Application number
PCT/CN2011/080383
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English (en)
French (fr)
Inventor
詹纯新
刘权
林新
高一平
张玉柱
Original Assignee
长沙中联重工科技发展股份有限公司
湖南中联重科专用车有限责任公司
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Application filed by 长沙中联重工科技发展股份有限公司, 湖南中联重科专用车有限责任公司 filed Critical 长沙中联重工科技发展股份有限公司
Priority to PCT/CN2011/080383 priority Critical patent/WO2013044485A1/zh
Publication of WO2013044485A1 publication Critical patent/WO2013044485A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib

Definitions

  • the utility model relates to a counterweight balancing mechanism, in particular to a counterweight balancing mechanism for a crane double-arm frame, and a double-arm crane comprising the counterweight balancing mechanism.
  • the crawler crane is a mobile crane for lifting, transporting, loading and unloading and installing materials. It is one of the most important main cranes in loading and unloading equipment.
  • the crane has the advantages of large lifting capacity, small grounding pressure, multiple combinations of the boom and the ability to carry on the load. Therefore, it is widely used in large-scale construction projects such as water conservancy, electric power, petrochemical, port and bridge.
  • a counterweight balancing device can be added to the original crane.
  • a boom-type super-lifting mast is installed between the mast (the cross-arm) and the boom to improve the geometric relationship between the boom and the cable, and the mast is connected with the counterweight balancing device to increase the whole machine. Stability, which improves the performance of the crane.
  • the boom system basically adopts the double-arm structure. Therefore, the super-lifting mast is also designed as a double-arm structure. How to connect the counterweight balancing device with the super-lifting mast and make the force distribution evenly distributed has a great influence on the performance of the crane.
  • the counterweight balancing device has two common forms: One is a trailer-type counterweight balancing device, which replays all the components on a counterweight trolley, and the stability of the whole machine is always in an optimal state. Simple, the counterweight car can walk or sway on the ground with the host; the other is the suspension counterweight balancing device, the super-lifting weight should be off the ground during the operation, otherwise the host can not enter Walking and turning operations.
  • the trailer-type counterweight balancing device has higher requirements on the ground, and the ground needs to meet at least the walking of the counterweight trolley.
  • This trailer-type counterweight balancing device is suitable for a shipyard with a better ground working condition.
  • the trailer type counterweight balancing device can also be used as a suspension type.
  • the suspended counterweight balancing device only requires the ground flatness and strength of the counterweight to be satisfied.
  • the lifting weight and working range should be matched with the weight of the counterweight and the counterweight to ensure that the counterweight is off the ground for walking or turning.
  • Figure 1 shows a combination of trailer and suspension weight balancing devices.
  • the weight is connected to the mast by the horizontal suspension and the pull plate.
  • the horizontal suspension has three stress points, the two ends are the suspension weight receiving points, and the middle is the weight loading point. Then, the force of the three stress points is converge to 2 points through the four pull plates, but the joints of the joints cannot function as a balance force, so there is no automatic adjustment function. Summary of the invention
  • the present invention provides a weight balancing mechanism for a crane double arm frame, wherein the weight balancing mechanism includes a weight base and a first balance beam, wherein the middle balance beam is in the middle
  • the connection point is hinged to the weight base, and the two side connection points symmetrically distributed with respect to the intermediate connection point are respectively hinged with the double arm frame of the crane.
  • the weight base is a box structure having an opening, and the first balance beam is disposed in the weight base.
  • the connecting points on both sides of the primary balance beam are connected to the double-arm frame of the crane through a connecting mechanism, and the connecting mechanism is respectively hinged with the first-stage balance beam and the dual-arm frame of the crane.
  • the connecting mechanism comprises a pull plate, one end of the pull plate and the first balance beam
  • the joint points on both sides are hinged, and the other end is hinged to the double arm frame of the crane
  • the connecting mechanism comprises a secondary balance beam, and the two ends of the pull plate are respectively connected to the connecting points on both sides of the primary balance beam and the double arm frame of the crane through the secondary balance beam.
  • the two pull plates are two, the intermediate connection point of the secondary balance beam is hinged with the first balance beam, and the two side connection points symmetrically distributed with respect to the intermediate connection point are respectively respectively The board is hinged.
  • a mounting gap is provided between the weights disposed on the weight base, and the connecting mechanism is disposed through the mounting gap.
  • the primary balance beam is an isosceles triangle structure.
  • the secondary balance beam is an isosceles triangle structure.
  • the weight base is disposed on the crawler chassis through a swing platform.
  • the utility model also provides a dual-arm crane, which comprises a front vehicle with a dual-arm frame and a rear vehicle with a counterweight balancing mechanism, wherein the front and rear vehicles are connected by a connecting frame, wherein the rear
  • the counterweight balancing mechanism of the vehicle is the above-described counterweight balancing mechanism according to the present invention.
  • the weight balancing mechanism of the present invention can transmit the weight to the boom, and the connecting members between the weight base and the crane double arm are connected by a hinge point having only one rotational degree of freedom.
  • the connecting members can rotate relative to the hinge point until the two arms are balanced, thereby automatically adjusting the force balance.
  • 1 is a schematic diagram of a counterweight balancing mechanism of a conventional dual-arm crane; 2 is a schematic view of the weight balancing mechanism of the present invention. Description of the reference numerals
  • orientation words such as "up, down, left, and right” as used generally refer to the directions shown in the drawings of the specification, unless otherwise stated.
  • the utility model provides a weight balancing mechanism for a crane double arm frame, wherein the weight balancing mechanism comprises a weight base 1 and a first balance beam 2, wherein the intermediate connection point of the first balance beam 2 Hinged with the counterweight base 1, the two side connection points symmetrically distributed with respect to the intermediate connection point are respectively hinged with the double arm frame of the crane.
  • the above technical solution of the utility model realizes the balance force mainly through the hinge connection between the first balance beam 2 and the weight base 1 and the double arm frame, so that there is only one rotational freedom between the two components hinged to each other. . Since the joint points on both sides are symmetrically distributed with respect to the intermediate joint point, and the intermediate joint point and the joint points on both sides are respectively connected to the weight base 1 and the double arm frame by means of hinges, the first-stage balance beam 2 is balanced before the force is balanced. Rotation with the counterweight base 1 or the dual arm frame in one direction around the hinge point until the force on the two booms is balanced.
  • connection between the above-mentioned counterweight base and the dual-arm frame of the crane through the primary balance beam is only one embodiment, and in practice, a plurality of connectors can be used for connection.
  • only one rotation freedom is passed between the connecting members between the weight base and the crane double arm frame.
  • the hinge point connection of the degree when the two arms are unevenly stressed, the connecting members can rotate relative to the hinge point until the two arms are balanced by force, thereby automatically adjusting the force balance.
  • the weight base 1 is a box structure having an opening, and the primary balance beam 2 is disposed in the weight base 2.
  • the counterweight is usually disposed above the counterweight base 1, so that the counterweight base 1 can generally be provided with an open box structure having an opening on the upper surface of the counterweight base 1, so that the primary balance beam 2 can be
  • the casing is embedded in the weight base 1 and the connection points on both sides of the primary balance beam 2 can be connected to the double arm frame through the opening of the weight base 1.
  • connection points on both sides of the primary balance beam 2 are connected to the dual-arm frame of the crane through a connection mechanism, and the connection mechanism is respectively hinged with the first-stage balance beam 2 and the double-arm frame of the crane .
  • the first-stage balance beam 2 is relatively large when the first-stage balance beam 2 is used to connect the counterweight base 1 and the dual-arm frame, which also causes the The strength of the primary balance beam 2 is reduced. Therefore, the connection is usually made between the primary balance beam 2 and the dual-arm frame of the crane using a connection mechanism.
  • the connecting mechanism is hingedly connected with the first balance beam 2 and the double arm frame, so that the connecting mechanism can only rotate in one direction, thereby also balancing the force distribution, so that The connecting mechanisms hinged at the joint points of the two primary balance beams 2 are equal in tension.
  • the connecting mechanism comprises a pull plate 3, one end of the pull plate 3 is hinged to a joint point of the two sides of the primary balance beam 2, and the other end is hinged to the double arm frame of the crane
  • the connecting mechanism is preferably in the form of a pull plate 3, and the two ends of the pull plate 3 are respectively hinged with the first balance beam 2 and the double arm frame, and the two pull plates 3 are subjected to the same pulling force, so that the two arms are The tension is equal.
  • the connecting mechanism comprises a secondary balance beam 4, and the two ends of the pull plate 3 respectively pass the second stage
  • the balance beam 4 is connected to the connection points on both sides of the primary balance beam 2 and the dual arm frame of the crane.
  • the connecting mechanism further comprises a secondary balance beam 4, which is respectively hinged between the pull plate 3 and the first balance beam 2 and the pull plate 3 and the double arm frame, so the second stage The balance beam can also be rotated in only one direction, thereby further balancing the tension applied to the two pull plates 3, thereby balancing the forces of the two arms.
  • the secondary balance beam 4 is small in size, and its main function is to have more connectors between the weight base 1 and the double arm frame, so that the balance of the force can be adjusted more accurately.
  • the two pull plates 3 are two, and the intermediate connection point of the secondary balance beam 4 is hinged with the first balance beam 2, and the two side connection points symmetrically distributed with respect to the intermediate connection point are respectively two The pull plate 3 is hinged.
  • the two side connecting points of the primary balance beam 2 are respectively hinged with a secondary balance beam 4, and each of the secondary balance beams 4 is hinged with two pull plates 3, two
  • the pull plate 3 is again hinged to the same boom by a secondary balance beam 4, and the other two pull plates 3 are hinged to the other boom by another secondary balance beam 4.
  • a total of four pull plates 3 are connected between the primary balance beam and the dual arm frame, which reduces the force of each pull plate 3, thereby increasing the life of the pull plate 3 and reducing the risk of malfunction.
  • the secondary balance beam 4 is connected to the primary balance beam 2 through the opening.
  • the secondary balance beam 4 is generally small in size, mainly for connecting the primary balance beam 2 and the pull plate 3, and has more hinged connectors between the weight base 1 and the dual arm frame.
  • the primary balance beam 2 can be completely disposed in the box of the counterweight base 1, so that the secondary balance beam 4 can pass through the box of the counterweight base 1.
  • the opening in the body is connected to the primary balance beam.
  • a mounting gap is provided between the weights disposed on the counterweight base 1, and the connecting mechanism is disposed through the mounting gap.
  • the primary balance beam 2 is disposed in the casing of the counterweight base 1, and the connection mechanism between the primary balance beam 2 and the dual-arm frame is required, it is disposed on the counterweight base 1 There should be a mounting gap between the weights to accommodate the connection mechanism.
  • the primary balance beam 2 is an isosceles triangular structure.
  • the primary balance beam 2 has an intermediate connection point and two bilateral connection points that are symmetric about the intermediate connection point, and the stresses of the connection points on both sides should be balanced, a preferred embodiment is to use an isosceles triangle structure.
  • the secondary balance beam 4 is an isosceles triangle structure. Since the secondary balance beam 2 also has an intermediate connection point and two bilateral connection points symmetrical about the intermediate connection point, and the two pull plates 3 connected by the two connection points are balanced by force, the secondary balance beam A preferred embodiment of 4 is to use an isosceles triangular structure.
  • the primary balance beam 2 and the weight base 1 are connected by a pin.
  • the primary balance beam 2 and the connecting mechanism and/or the connecting structure are connected to the dual arm frame of the crane by a pin.
  • the primary balance beam 2 and the pull plate 3 and/or the pull plate 3 and the dual arm frame of the crane are connected by a pin.
  • between the primary balance beam 2 and the secondary balance beam 4 and/or between the secondary balance beam 4 and the pull plate 3 and/or the secondary balance beam 4 It is connected to the double arm frame of the crane through a pin shaft.
  • the above hinge points are preferably connected by a pin.
  • the counterweight base 1 is disposed on the crawler chassis 6 via a swing platform 5.
  • a trailer type is preferably used, and the weight base is disposed on the counterweight trolley, and the counterweight trolley is preferably a crawler type, so the weight base 1 is preferably The ground is disposed on the crawler chassis 6.
  • the utility model also provides a dual-arm crawler crane, which comprises a front car with a dual-arm frame and a rear car with a counterweight balancing mechanism, and the front car and the rear car are connected by a connecting frame, wherein
  • the counterweight balancing mechanism of the rear vehicle is the weight balancing mechanism according to any one of claims 1-15.
  • the tension acting on the two arms of the dual-arm crawler crane can be evenly distributed.
  • any combination of various embodiments of the present invention may be made as long as it does not deviate from the idea of the present invention, and it should be regarded as the content disclosed in the present invention.

Abstract

一种用于起重机双臂架的配重平衡机构，其中，所述配重平衡机构包括配重底座（1）和一级平衡梁（2），其中所述一级平衡梁（2）的中间连接点与所述配重底座（1）铰接，相对于该中间连接点对称分布的两侧连接点分别与所述起重机的双臂架铰接。通过上述技术方案，所述配重平衡机构能够将配重力传递至臂架，并且使配重底座和起重机双臂架之间的各连接件之间都通过只有一个转动自由度的铰接点连接，在两个臂架受力不均时各连接件能够绕铰接点相对旋转直至两个臂架受力平衡，从而起到自动调节受力平衡的作用。

Description

配重平衡机构以及双臂架起重机 技术领域
本实用新型涉及一种配重平衡机构， 具体地， 涉及一种用于起重机双 臂架的配重平衡机构， 以及包括该配重平衡机构的双臂架起重机。 背景技术
为了实现大起重重量， 需要设计生产出超大型的起重机， 这种超大型 起重机通常为履带起重机。 履带起重机是一种进行物料起重、 运输、 装卸 和安装等作业的流动式起重机， 是装卸设备中最重要的主力起重机之一。 这种起重机具有起重量大， 接地比压小， 臂架有多种组合方式以及可带载 行走等优点， 因此广泛地应用于水利、 电力、 石油化工、 港口和桥梁等大 型建设工程。
为了充分发挥大型起重机的臂架性能， 可在原有的起重机基础上增加 配重平衡装置。 通常是在桅杆 （人字架） 与臂架之间安装有臂架式超起桅 杆， 以改善臂架与拉索的几何关系， 同时超起桅杆与配重平衡装置相连， 以增加整机的稳定性， 从而提高起重机的性能。
超大型履带起重机， 特别是 3000吨级履带起重机， 为保证结构强度和 运输要求， 其臂架系统基本都采用双臂架结构形式， 因此， 其超起桅杆对 应地也设计为双臂架结构形式， 如何连接配重平衡装置与超起桅杆、 并使 受力得到均衡分布对起重机的性能具有很大影响。
通常， 配重平衡装置有两种常用形式： 一种是拖车式配重平衡装置， 将所有配重放在一个配重小车上， 整机的稳定性始终处于最佳状态， 工况 变化的实现简单， 配重小车可以在地面上与主机同歩行走或回转； 另一种 是悬浮式配重平衡装置， 超起配重在作业过程中要离地， 否则主机不能进 行行走及回转作业。
一般情况下， 拖车式配重平衡装置对地面的要求较高， 地面至少需要 能够满足配重小车的行走， 这种拖车式配重平衡装置适用于造船厂这种地 面情况较好的作业场所， 当然拖车式配重平衡装置也可以当做悬浮式的使 用。 悬浮式配重平衡装置只要求停放配重的地面平整度及强度能够满足。 但是使用悬浮式配重平衡装置时， 起重量和工作幅度要与配重重量和配重 幅度匹配， 这样才能够保证配重离地以进行行走或回转等作业。
图 1所示为一种拖车式和悬浮式相结合的配重平衡装置。如图 1所示， 通过水平悬架与拉板将配重与桅杆相连， 水平悬架的受力点为 3个， 两端 为悬浮配重受力点， 中间为配重小车受力点， 再通过 4根拉板将 3个受力 点所受力汇聚为 2点， 但其连接部位均不能起到平衡受力的作用， 因此没 有自动调节的功能。 发明内容
本实用新型的目的是提供一种配重平衡装置， 该配重平衡装置能够自 动地调节使得起重机的双臂架受力平衡。
为了实现上述目的， 本实用新型提供一种用于起重机双臂架的配重平 衡机构， 其中， 所述配重平衡机构包括配重底座和一级平衡梁， 其中所述 一级平衡梁的中间连接点与所述配重底座铰接， 相对于该中间连接点对称 分布的两侧连接点分别与所述起重机的双臂架铰接。
优选地， 所述配重底座为具有开口的箱体结构， 所述一级平衡梁设置 在所述配重底座之中。
优选地， 所述一级平衡梁的两侧连接点通过连接机构与所述起重机的 双臂架连接， 所述连接机构分别与所述一级平衡梁和所述起重机的双臂架 铰接。
优选地， 所述连接机构包括拉板， 该拉板的一端与所述一级平衡梁的 两侧连接点铰接， 另一端与所述起重机的双臂架铰接
优选地， 所述连接机构包括二级平衡梁， 拉板的两端分别通过二级平 衡梁连接到一级平衡梁的两侧连接点和所述起重机的双臂架。
优选地， 所述拉板为两个， 所述二级平衡梁的中间连接点与所述一级 平衡梁铰接， 相对于该中间连接点对称分布的两侧连接点分别于两个所述 拉板铰接。
优选地， 设置在所述配重底座上的配重块之间具有安装间隙， 所述连 接机构穿过所述安装间隙设置。
优选地， 所述一级平衡梁为等腰三角形结构。
优选地， 所述二级平衡梁为等腰三角形结构。
优选地， 所述配重底座通过回转平台设置在履带式底盘上。
另外本实用新型还提供一种双臂架起重机， 包括带有双臂架的前车和 带有配重平衡机构的后车， 前车和后车之间通过连接架连接， 其中， 所述 后车的配重平衡机构是根据本实用新型上述的配重平衡机构。
通过上述技术方案， 本实用新型的配重平衡机构能够将配重力传递至 臂架， 并且配重底座和起重机双臂架之间的各连接件之间都通过只有一个 转动自由度的铰接点连接， 在两个臂架受力不均时各连接件能够绕铰接点 相对旋转直至两个臂架受力平衡， 从而起到自动调节受力平衡的作用。
本实用新型的其他特征和优点将在随后的具体实施方式部分予以详细 说明。 附图说明
附图是用来提供对本实用新型的进一歩理解， 并且构成说明书的一部 分， 与下面的具体实施方式一起用于解释本实用新型， 但并不构成对本实 用新型的限制。 在附图中：
图 1是现有的双臂架起重机的配重平衡机构示意图； 图 2是本实用新型的配重平衡机构的示意图。 附图标记说明
1 配重底座 2—级平衡梁
3 拉板 4 二级平衡梁
5 回转平台 6履带式底盘 具体实施方式
以下结合附图对本实用新型的具体实施方式进行详细说明。 应当理解 的是， 此处所描述的具体实施方式仅用于说明和解释本实用新型， 并不用 于限制本实用新型。
在本实用新型中， 在未作相反说明的情况下， 使用的方位词如 "上、 下、 左、 右"通常是指说明书附图中所示的方向。
本实用新型提供一种用于起重机双臂架的配重平衡机构， 其中， 所述 配重平衡机构包括配重底座 1和一级平衡梁 2，其中所述一级平衡梁 2的中 间连接点与所述配重底座 1铰接， 相对于该中间连接点对称分布的两侧连 接点分别与所述起重机的双臂架铰接。
本实用新型的上述技术方案实现平衡受力主要通过一级平衡梁 2分别 与配重底座 1和双臂架之间铰接的连接方式， 以使得相互铰接的两个部件 之间只有一个转动自由度。 由于两侧连接点关于中间连接点对称地分布， 而且该中间连接点和两侧连接点分别通过铰接的方式与配重底座 1 和双臂 架连接， 因此在受力平衡之前一级平衡梁 2与配重底座 1或双臂架就会分 别绕铰接点在一个方向上旋转， 直到两个臂架上的受力平衡为止。
上述配重底座和起重机的双臂架之间通过一级平衡梁连接只是一种实 施方式， 在实际应用中可以利用多个连接件来连接。 通过上述技术方案， 使配重底座和起重机双臂架之间的各连接件之间都通过只有一个转动自由 度的铰接点连接， 在两个臂架受力不均时各连接件能够绕铰接点相对旋转 直至两个臂架受力平衡， 从而起到自动调节受力平衡的作用。
优选地， 所述配重底座 1 为具有开口的箱体结构， 所述一级平衡梁 2 设置在所述配重底座 2之中。
配重块通常设置在配重底座 1之上， 因此配重底座 1通常可以设置为 具有开口的箱体结构， 在配重底座 1 的上表面上具有开口， 这样就可以将 一级平衡梁 2嵌入到该配重底座 1的箱体中设置， 并且一级平衡梁 2的两 侧连接点可以穿出该配重底座 1 的开口与双臂架连接。 通过上述的配重底 座 1 的优选实施方式， 可以节省空间， 而且隐藏式的一级平衡梁在运输过 程中不需要拆卸， 十分方便。
优选地， 所述一级平衡梁 2的两侧连接点通过连接机构与所述起重机 的双臂架连接， 所述连接机构分别与所述一级平衡梁 2和所述起重机的双 臂架铰接。
由于配重底座 1和双臂架通常相距较远， 因此仅利用一级平衡梁 2来 连接配重底座 1和双臂架的话， 一级平衡梁 2的尺寸就比较大， 这样也会 导致该一级平衡梁 2的强度降低。 因此， 通常在一级平衡梁 2和起重机的 双臂架之间利用连接机构进行连接。 而且该连接机构与一级平衡梁 2和双 臂架之间分别铰接地连接， 因此该连接机构也只能在一个方向上转动， 从 而也能起到使力的分配均衡的作用， 使得分别与两个一级平衡梁 2 的两侧 连接点铰接的连接机构的拉力相等。
优选地，所述连接机构包括拉板 3，该拉板 3的一端与所述一级平衡梁 2的两侧连接点铰接， 另一端与所述起重机的双臂架铰接
该连接机构优选地采用拉板 3的形式， 拉板 3的两端分别与一级平衡 梁 2和双臂架铰接， 这样的两个拉板 3所受的拉力相等， 从而使两个臂架 所受拉力相等。
优选地，所述连接机构包括二级平衡梁 4，拉板 3的两端分别通过二级 平衡梁 4连接到一级平衡梁 2的两侧连接点和所述起重机的双臂架。
在本优选实施方式中， 连接机构还包括二级平衡梁 4， 该二级平衡梁 4 分别铰接在拉板 3与一级平衡梁 2和拉板 3与双臂架之间， 因此该二级平 衡梁也只能在一个方向上转动， 从而进一步地使两个拉板 3所受的拉力平 衡， 进而使两个臂架的受力平衡。 通常， 该二级平衡梁 4的尺寸较小， 其 主要作用是使配重底座 1和双臂架之间具有更多的连接件， 从而能够更加 精确地调整受力的平衡。
优选地， 所述拉板 3为两个， 所述二级平衡梁 4的中间连接点与所述 一级平衡梁 2铰接， 相对于该中间连接点对称分布的两侧连接点分别与两 个所述拉板 3铰接。
也就是说， 在本优选实施方式中， 一级平衡梁 2的两个两侧连接点各 铰接一个二级平衡梁 4， 每个二级平衡梁 4又各铰接两个拉板 3， 两个拉板 3又通过一个二级平衡梁 4铰接同一个臂架上，另外两个拉板 3通过另一个 二级平衡梁 4铰接到另一个臂架上。 这样， 在一级平衡梁和双臂架之间一 共连接有 4个拉板 3， 这样就降低了每个拉板 3的受力，从而提高拉板 3的 寿命并降低故障的危险。
优选地， 所述二级平衡梁 4穿过所述开口与所述一级平衡梁 2连接。 上文已经介绍， 该二级平衡梁 4 的尺寸通常较小， 主要起到连接一级 平衡梁 2和拉板 3，而且使配重底座 1和双臂架之间具有更多铰接的连接件。 当配重底座 1采用具有开口的箱体的实施方式时， 一级平衡梁 2可以完全 设置在配重底座 1 的箱体内， 所以该二级平衡梁 4就可以穿过配重底座 1 的箱体上的开口来与一级平衡梁连接。
优选地， 设置在所述配重底座 1 上的配重块之间具有安装间隙， 所述 连接机构穿过所述安装间隙设置。
如上所述， 由于一级平衡梁 2设置在配重底座 1的箱体内， 而且一级 平衡梁 2与双臂架之间的需要设置连接机构， 因此设置于配重底座 1之上 的配重块之间应当具有安装间隙， 以便安装该连接机构。
优选地， 所述一级平衡梁 2为等腰三角形结构。
由于一级平衡梁 2具有一个中间连接点和两个关于中间连接点对称的 两侧连接点， 而且两侧连接点的受力应当平衡， 因此一种优选地实施方式 就是采用等腰三角形结构的一级平衡梁 2.
另外， 优选地， 所述二级平衡梁 4为等腰三角形结构。 由于二级平衡 梁 2也具有一个中间连接点和两个关于中间连接点对称的两侧连接点， 而 且两侧连接点所连接的两个拉板 3的受力平衡， 因此该二级平衡梁 4的一 种优选实施方式就是采用等腰三角形结构。
优选地， 所述一级平衡梁 2与所述配重底座 1之间通过销轴连接。 另 外， 优选地， 所述一级平衡梁 2与所述连接机构之间和 /或所述连接结构与 所述起重机的双臂架之间通过销轴连接。 还优选地， 所述一级平衡梁 2与 所述拉板 3之间和 /或所述拉板 3与所述起重机的双臂架之间通过销轴连接。 此外， 优选地， 所述一级平衡梁 2与所述二级平衡梁 4之间和 /或所述二级 平衡梁 4与所述拉板 3之间和 /或所述二级平衡梁 4与所述起重机的双臂架 之间通过销轴连接。
在上述各优选实施方式， 在本实用新型的所有铰接的连接点处， 例如 一级平衡梁 3与配重底座 1之间， 一级平衡梁 2与连接机构之间和 /或连接 结构与起重机的双臂架之间， 对于优选为拉板 3 的连接结构来说， 则是一 级平衡梁 2与所述拉板 3之间和 /或所述拉板 3与所述起重机的双臂架之间， 还有一级平衡梁 2与所述二级平衡梁 4之间和 /或所述二级平衡梁 4与所述 拉板 3之间和 /或所述二级平衡梁 4与所述起重机的双臂架之间， 上述铰接 点都优选为通过销轴连接。
优选地， 所述配重底座 1通过回转平台 5设置在履带式底盘 6上。 对于本实用新型的配重平衡机构来说， 优选地采用拖车式， 配重底座 设置在配重小车上， 而该配重小车优选地为履带式， 因此配重底座 1优选 地设置在履带式底盘 6上。
另外， 本实用新型还提供一种双臂架履带起重机， 包括带有双臂架的 前车和带有配重平衡机构的后车， 前车和后车之间通过连接架连接， 其中， 所述后车的配重平衡机构是根据权利要求 1-15中任意一项所述的配重平衡 机构。
通过本实用新型的上述配重平衡机构， 使得该双臂架履带起重机的配 重作用在两个臂架上的拉力能够均衡地分布。
以上结合附图详细描述了本实用新型的优选实施方式， 但是， 本实用 新型并不限于上述实施方式中的具体细节， 在本实用新型的技术构思范围 内， 可以对本实用新型的技术方案进行多种简单变型， 这些简单变型均属 于本实用新型的保护范围。
另外需要说明的是， 在上述具体实施方式中所描述的各个具体技术特 征， 在不矛盾的情况下， 可以通过任何合适的方式进行组合， 为了避免不 必要的重复， 本实用新型对各种可能的组合方式不再另行说明。
此外， 本实用新型的各种不同的实施方式之间也可以进行任意组合， 只要其不违背本实用新型的思想， 其同样应当视为本实用新型所公开的内 容。

Claims

权利要求
1、 一种用于起重机双臂架的配重平衡机构， 其特征在于， 所述配重平 衡机构包括配重底座 （1 ) 和一级平衡梁 （2)， 其中所述一级平衡梁 （2 ) 的中间连接点与所述配重底座（1 )铰接， 相对于该中间连接点对称分布的 两侧连接点分别与所述起重机的双臂架铰接。
2、 根据权利要求 1所述的配重平衡机构， 其特征在于， 所述配重底座 ( 1 ) 为具有开口的箱体结构， 所述一级平衡梁 （2) 设置在所述配重底座 ( 1 ) 之中。
3、 根据权利要求 1或 2所述的配重平衡机构， 其特征在于， 所述一级 平衡梁（2) 的两侧连接点通过连接机构与所述起重机的双臂架连接， 所述 连接机构分别与所述一级平衡梁 （2) 和所述起重机的双臂架铰接。
4、 根据权利要求 3所述的配重平衡机构， 其特征在于， 所述连接机构 包括拉板 （3 )， 该拉板 （3 ) 的一端与所述一级平衡梁 （2) 的两侧连接点 铰接， 另一端与所述起重机的双臂架铰接
5、 根据权利要求 4所述的配重平衡机构， 其特征在于， 所述连接机构 包括二级平衡梁 （4)， 拉板 （3 ) 的两端分别通过二级平衡梁 （4 ) 连接到 一级平衡梁 （2) 的两侧连接点和所述起重机的双臂架。
6、 根据权利要求 5所述的配重平衡机构， 其特征在于， 所述拉板（3 ) 为两个， 所述二级平衡梁 （4) 的中间连接点与所述一级平衡梁 （2)铰接， 相对于该中间连接点对称分布的两侧连接点分别与两个所述拉板（3 )铰接。
7、 根据权利要求 4-6中任意一项所述的配重平衡机构， 其特征在于， 设置在所述配重底座（1 )上的配重块之间具有安装间隙， 所述连接机构穿 过所述安装间隙设置。
8、 根据权利要求 1所述的配重平衡机构， 其特征在于， 所述一级平衡 梁 （2) 为等腰三角形结构。
9、 根据权利要求 5所述的配重平衡机构， 其特征在于， 所述二级平衡 梁 （4) 为等腰三角形结枸。
10、 根据权利要求 1所述的配重平衡机构， 其特征在于， 所述配重底 座 （1 ) 通过回转平台 （5 ) 设置在履带式底盘 （6) 上。
11、 一种双臂架起重机， 包括带有双臂架的前车和带有配重平衡机构 的后车， 前车和后车之间通过连接架连接， 其特征在于， 所述后车的配重 平衡机构是根据权利要求 1-10中任意一项所述的配重平衡机构。
PCT/CN2011/080383 2011-09-29 2011-09-29 配重平衡机构以及双臂架起重机 WO2013044485A1 (zh)

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