WO2013040893A1 - 一种臂架装置及工程机械 - Google Patents

一种臂架装置及工程机械 Download PDF

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Publication number
WO2013040893A1
WO2013040893A1 PCT/CN2012/074044 CN2012074044W WO2013040893A1 WO 2013040893 A1 WO2013040893 A1 WO 2013040893A1 CN 2012074044 W CN2012074044 W CN 2012074044W WO 2013040893 A1 WO2013040893 A1 WO 2013040893A1
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WIPO (PCT)
Prior art keywords
boom
section
folded
booms
boom device
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Application number
PCT/CN2012/074044
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English (en)
French (fr)
Inventor
张竟
谢世惠
柏友运
Original Assignee
湖南三一智能控制设备有限公司
三一重工股份有限公司
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Application filed by 湖南三一智能控制设备有限公司, 三一重工股份有限公司 filed Critical 湖南三一智能控制设备有限公司
Publication of WO2013040893A1 publication Critical patent/WO2013040893A1/zh

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04Devices for both conveying and distributing
    • E04G21/0418Devices for both conveying and distributing with distribution hose
    • E04G21/0445Devices for both conveying and distributing with distribution hose with booms

Definitions

  • the invention relates to the technical field of engineering machinery, and in particular to a boom device.
  • the invention also relates to a construction machine having the above-described boom device.
  • a concrete pump truck is a typical construction machine that transports concrete along a pipeline to the location required by the construction process.
  • the concrete pump truck needs to transport the concrete to the designated position through the conveying pipe fixed on the boom device, and as the conveying position changes, the boom device needs to drive the conveying pipe to realize the unfolding, gathering and rotating actions.
  • the boom unit of a concrete pump truck generally includes a multi-section boom that can be folded between the boom arms.
  • the folding method used for the boom of the concrete pump truck mainly includes the R-type, Z-type and RZ-type integral folding modes, and the arm frame device of the five-section or more booms basically adopts the RZ-type folding method.
  • FIG. 1 is a schematic view showing a folding of a typical boom device in the prior art
  • FIG. 2 is a plan view of the boom device shown in FIG.
  • the first section of the boom device is hinged to the turntable, and the first section of the boom 1 ', the second section of the boom 2' and the third section of the boom 3 are folded into an R-type, a third-section boom 3,
  • the bending arm frame, the third section arm frame 3, the fourth section arm frame 4, and the fifth section arm frame 5 are folded into a Z-shape, and the fifth-section arm frame 5 is folded over the fourth-section arm frame 4 .
  • the sixth boom 6 and the fifth boom 5, Arranged in the same horizontal direction, and folded in the fourth section of the boom 4, above, that is, the fifth section of the boom 5, and the sixth section of the boom 6, equivalent to the fifth of the prior art five-section pump truck
  • the boom frame has substantially no change in the total length of the boom device of the above-described six-arm pump truck compared to the boom device of the five-arm pump truck of the prior art.
  • the length of the boom can be increased by increasing the number of axles due to the constraint of the height of the boom arrangement in the vertical direction.
  • the larger the number of axles the larger the space, and the longer the length of the arm that can be arranged.
  • increase the concrete pump The number of axles of the car will affect the performance matching of the whole vehicle, and will lead to a sharp increase in the cost of the entire vehicle, which is not conducive to cost savings.
  • the sixth section boom 6 has a small folding space in the vertical direction, and it is inconvenient to set the swing mechanism, so that the swing angle of the sixth section boom 6 is relatively small, and the general swing angle is less than 110 degrees. , resulting in poor fabric flexibility.
  • a first object of the present invention is to provide a boom apparatus which is compact in structure and high in vertical space utilization, provides space for the arrangement of the multi-section boom, thereby increasing the total length of the boom apparatus, and Improve the fabric flexibility of the boom.
  • a second object of the present invention is to provide a construction machine having the above-described boom device.
  • the present invention provides a boom apparatus including at least five-section booms, each of which is sequentially hinged, and the third-section boom is a curved boom, when the boom apparatus is In the folded state, the first three-section boom is folded into an R-shape, the fourth-section boom is folded over the third-section boom, and when the boom device is in a folded state, the third-section boom and the fourth The boom and the fifth boom are folded into an R shape, and the fifth boom is folded at a position below the third boom.
  • At least a portion of the fifth pitch boom is an arcuate structure.
  • the fifth-section boom is entirely curved.
  • the end of the fifth-section boom hinged to the fourth-section boom is an arc structure.
  • at least six booms are included, and when the boom device is in a folded state, the fourth boom, the fifth boom, and the sixth boom are folded into a Z shape.
  • At least a six-section boom is included, and when the boom device is in a folded state, the fourth-section boom, the fifth-section boom, and the sixth-section boom are folded into an R-shape, and the sixth The boom is folded between the fifth boom and the third boom.
  • a telescopic cylinder and a linkage mechanism are disposed between the fifth-section boom and the sixth-section boom to drive the two booms to be unfolded or collapsed.
  • the present invention also provides a construction machine comprising a chassis and a boom device disposed on the chassis, the boom device being the arm of any of the above
  • the rack device has the above-mentioned technical effects, and the construction machine having the boom device should also have corresponding technical effects.
  • the construction machine is specifically a concrete pump truck.
  • the boom device provided by the present invention comprises at least five booms, each of which is hinged in turn, and the third boom is a curved boom.
  • the first three booms are folded.
  • the fourth-section boom is folded over the upper position of the third-section boom, and when the boom device is in the folded state, the third-section boom, the fourth-section boom, and the fifth-section boom Folded into an R-shape, and the fifth-section boom is folded at a lower position of the third-section boom.
  • the boom device provided by the present invention When the boom device provided by the present invention is folded, the fifth-section boom is folded under the third-section boom, and the space under the third-section boom is fully utilized.
  • the boom in the present invention is compared with the prior art.
  • the compact structure of the device improves the utilization of the space in the vertical direction of the boom, and provides space for the arrangement of the multi-section boom. In the same folding space, the number of folding arms can be increased, thereby increasing the total length of the boom device.
  • the rack can be allocated a relatively large space, and a transmission or driving mechanism can be added to the boom to improve the fabric flexibility of the boom.
  • the end portion of the fifth-section boom and the fourth-section boom is curved.
  • the fifth-section boom can be folded under the third-section boom, fully utilizing the third-section boom The space below.
  • a preferred solution includes at least a six-section boom, and when the boom device is in a folded state, the fourth-section boom, the fifth-section boom, and the sixth-section boom are folded into a Z shape; or, including at least a six-section boom, when the boom device is in a folded state, the fourth-section boom, the fifth-section boom, and the sixth-section boom are folded into an R-shape, and the sixth-section boom is folded over Between the fifth section boom and the third section boom.
  • the sixth section of the boom device can utilize a relatively large space in the vertical direction, and can be folded into a single column, which not only increases the total boom length of the boom device, but also There is enough space to arrange the mechanism that drives the work of the sixth boom, which can increase the swing angle of the sixth boom and improve the fabric flexibility of the boom.
  • FIG. 1 is a schematic view showing the folding of a typical boom device in the prior art
  • Figure 2 is a plan view of the boom device of Figure 1;
  • FIG. 3 is a schematic structural view of a specific embodiment of a boom device according to the present invention
  • FIG. 4 is a schematic structural view of the first three-section boom of the boom device shown in FIG. 3 in a folded state
  • FIG. 6 is a structural schematic view showing the third section boom, the fourth section boom, the fifth section boom, and the sixth section boom of the boom apparatus shown in FIG. 3 in a folded state;
  • Figure 7 is a plan view showing the third section boom, the fourth section boom, the fifth section boom and the sixth section boom shown in Figure 6 in a folded state;
  • Figure 8 is a schematic view showing the structure of another embodiment of the boom device provided by the present invention
  • Figure 9 is a plan view of the boom device shown in Figure 8.
  • the correspondence between the reference numerals and the component names in FIGS. 1 and 2 is: the first pitch boom frame; the second segment boom frame 2; the third segment boom frame 3; the fourth segment boom frame 4 ,; the fifth section of the boom 5; the sixth section of the boom 6,.
  • An object of the present invention is to provide a boom apparatus which is compact in structure and high in vertical space utilization. Further, another object of the present invention is to provide a construction machine including the above-described boom device.
  • FIG. 3 is a schematic structural view of a specific embodiment of a boom device according to the present invention
  • FIG. 4 is a schematic structural view of the first three-section boom of the boom device shown in FIG.
  • Figure 5 is a plan view of the first three-section boom shown in Figure 4
  • Figure 6 is the third-section boom, the fourth-section boom, the fifth-section boom and the sixth-section boom of the boom assembly shown in Figure 3.
  • Folding FIG. 7 is a plan view showing the third section boom, the fourth section boom, the fifth section boom, and the sixth section boom shown in FIG.
  • the boom device provided by the present invention comprises at least five booms, each of which is hinged in sequence, and a telescopic cylinder is generally provided between adjacent booms of the boom device, and one end of the telescopic cylinder and the front boom Hinged, the other end of the telescopic cylinder can be hinged to the rear boom by a linkage mechanism, and the telescopic cylinder is used to drive the rear boom to expand or collapse.
  • the end of the first boom 1 is hinged to the turntable, and in the adjacent two booms, the boom near the turntable is defined as the front boom and the other boom The shelf is defined as the rear boom.
  • the third boom 3 in the boom device is a curved boom.
  • the first three booms are folded into an R shape, and the fourth boom 4 is folded above the third boom 3.
  • the boom device is in the folded state, the third-section boom 3, the fourth-section boom 4, and the fifth-section boom 5 are folded into an R-shape, and the fifth-section boom 5 is folded in the third-section arm The position directly below the rack 3.
  • the fifth-section boom 5 is folded directly below the third-section boom 3, and the space under the third-section boom 3 is fully utilized, compared with the prior art.
  • the compact structure of the boom device improves the utilization of the vertical space of the boom and provides space for the arrangement of the multi-section boom. In the same folding space, the number of booms can be folded more, thereby increasing the boom.
  • the total length of the device and avoids performance matching problems and high cost problems caused by increasing the number of axles to increase the length of the boom; and, when the boom of the same number of sections is arranged in the same folding space, the boom apparatus
  • the booms in the middle sections can be allocated a relatively large space, and the transmission or drive mechanism can be added to the booms, which is advantageous for improving the fabric flexibility of the booms.
  • the structure of the fifth section boom 5 can be designed to have at least a part of an arc structure, so that the fifth section boom can be folded under the third section boom, fully utilizing The space under the third section of the boom.
  • the fifth section of the arm frame 5 is entirely curved, or the hinged ends of the fifth section arm frame 5 and the fourth section of the arm frame 4 are arcuate.
  • the fifth-section boom and the sixth-section boom can be stacked, that is, two upper and lower layers
  • the column is folded and placed, and two specific folding methods of the boom device are given below.
  • the boom device includes at least six sections.
  • the boom, the fifth boom 5 is generally curved, and when the boom device is in the folded state, the fourth boom 4, the fifth boom 5, and the sixth boom 6 are folded into a Z-shape. .
  • the sixth section of the boom device 6 has a relatively large space available in the vertical direction, and can be folded into a single column, which not only increases the total boom length of the boom device, but also increases the total boom length of the boom device. Moreover, there is enough space to arrange the mechanism for driving the sixth boom 6 to increase the rotation angle of the sixth boom 6 and improve the flexibility of the cloth.
  • the Z-shaped arrangement facilitates deployment of the boom assembly in a relatively small space.
  • FIG. 8 is a schematic structural view of another embodiment of the boom device provided by the present invention.
  • the folding state of the first three-section boom is the same as the prior art, and only the rear view is given in the figure.
  • FIG. 9 is a top view of the boom device of FIG. 8.
  • the boom device includes at least six booms, and the hinged ends of the fifth boom 5 and the fourth boom 4 are curved, when the boom assembly is in a folded state.
  • the fourth section boom 4, the fifth section boom 5 and the sixth section boom 6 are folded into an R shape, and the sixth section boom 6 is folded between the fifth section boom 5 and the third section boom 3 .
  • the deployment direction of the fifth-section boom 5 relative to the fourth-section boom 4, and the development direction of the sixth-section boom 6 relative to the fifth-section boom 5 are clockwise directions V2.
  • the fourth boom 4, the fifth boom 5 and the sixth boom 6 are folded into an R shape, which can further utilize the space between the first two booms and increase the overall boom device.
  • the compactness of the structure is the compactness of the structure.
  • the unfolding or gathering of adjacent booms is achieved by telescopic cylinders disposed therebetween.
  • the telescopic cylinder and the link mechanism may be disposed between the fifth boom 5 and the sixth boom 6 in the above embodiments to drive the two booms to be unfolded or collapsed;
  • the fifth section of the boom and the sixth section of the boom can realize a relatively large variable amplitude movement, and the fifth section of the boom 5 and the sixth section of the boom 6 pass through the telescopic cylinder and the connecting rod.
  • Machine The phase matching mode realizes mutual movement, and the rotation angle of the sixth section boom 6 can be increased to increase the flexibility of the cloth.
  • the number of booms in the boom device described herein is not limited to a six-section boom, but also a more-section boom, such as a seven-section boom.
  • the folding manner of the boom can be the folding manner described in any of the above embodiments, and the arrangement of the sixth boom and the seventh boom can be arranged according to the use requirements of the concrete pump truck, for example, when the boom is in a folded state.
  • the sixth boom and the seventh boom are folded on the same horizontal plane, and the seven-section boom has higher work flexibility than the concrete pump truck of the six-section boom device.
  • the so-called R-folding is that the folding direction of the rear boom in the folding boom is the same as that in the front boom; the so-called Z-fold is the rear of the folding boom.
  • the folding direction of one arm frame is opposite to that of the previous one arm frame.
  • the present invention also provides a construction machine comprising a chassis and a boom device disposed on the chassis, the boom device being the boom device described in any of the above embodiments. Since the above-described boom device has the above-described technical effects, the construction machine having the boom device should also have a corresponding technical effect.
  • the above construction machine may be a concrete pump truck.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
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Abstract

一种臂架装置,包括至少五节臂架,各所述臂架依次铰接,第三节臂架(3)为拐弯臂架,当所述臂架装置处于折叠状态时,前三节臂架折叠为R型,第四节臂架(4)折叠于所述第三节臂架(3)的上方位置,第三节臂架(3)、第四节臂架(4)以及第五节臂架(5)折叠为R型,且所述第五节臂架(5)折叠于所述第三节臂架(3)的下方位置。该臂架装置结构比较紧凑,提高了臂架竖直方向空间的利用率,为多节臂架的布置提供了空间,在相同的折叠空间内,可以折叠臂架的节数更多,从而增加了臂架装置的总长度,并提高了臂架的布料灵活性。此外,还公开了一种具有上述臂架装置的工程机械。

Description

一种臂架装置及工程机械 本申请要求于 2011 年 09 月 22 日提交中国专利局、 申请号为 201110283835.9, 发明名称为 "一种臂架装置及工程机械"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。
技术领域
本发明涉及工程机械技术领域, 尤其涉及一种臂架装置。 本发明还涉 及一种具有上述臂架装置的工程机械。
背景技术
混凝土泵车是一种典型的工程机械, 可将混凝土沿管道输送到建筑工 程所需的位置。 在工作过程中, 混凝土泵车需要通过固定于臂架装置上的 输送管将混凝土输送至指定位置, 并且随着输送位置的变化, 臂架装置需 要带动输送管实现展开、 收拢以及旋转等动作。 混凝土泵车的臂架装置一 般包括多节臂架, 各节臂架之间能够折叠。
目前混凝土泵车的臂架所使用的折叠方式主要有 R型、 Z型以及 RZ 型等整体折叠方式, 其中对于五节以上臂架的臂架装置基本均使用 RZ型 折叠方式。
请参考图 1和图 2, 图 1为现有技术中一种典型的臂架装置的折叠示 意图; 图 2为图 1所示的臂架装置的俯视图。
臂架装置的第一节臂架 Γ与转台铰接, 第一节臂架 1 '、 第二节臂架 2' 以及第三节臂架 3,折叠成 R型,第三节臂架 3,为拐弯臂架,第三节臂架 3,、 第四节臂架 4,以及第五节臂架 5,折叠成 Z型,第五节臂架 5,折叠于第四节 臂架 4,的上方。 然而, 第四节臂架 4,上方的空间有限, 为防止臂架折叠超 高, 现有技术中六节臂的混凝土泵车中, 第六节臂架 6,和第五节臂架 5, 沿同一水平方向顺次布置, 并折叠于第四节臂架 4,上方, 即第五节臂架 5, 和第六节臂架 6,相当于现有技术中五节臂泵车的第五节臂架, 与现有技术 中五节臂泵车的臂架装置相比, 上述六节臂泵车的臂架装置的总长度实质 上未发生变化。
在上述六节臂泵车的臂架布置中, 由于竖直方向上臂架布置高度的约 束, 还可以通过增加车桥数以提高臂架的长度。 在相同的布置高度下, 车 桥数越大, 空间越大, 可布置的臂架的长度就越长。 但是, 增加混凝土泵 车的车桥数将影响整车的性能匹配, 并且将导致整车的成本急剧增加, 不 利于节约成本。 另外地, 上述折叠方式中第六节臂架 6,在竖直方向的折叠 空间比较小,不便于设置回转机构,从而第六节臂架 6,的回转角度比较小, 一般回转角度小于 110度, 导致布料灵活性差。
因此, 如何改进臂架装置的折叠方式, 使其结构紧凑、 竖直空间利用 率高, 为多节臂架的布置提供空间, 从而增加臂架装置的总长度, 并提高 臂架的布料灵活性, 成为本领域技术人员亟待解决的技术难题。
发明内容
本发明的第一个目的是提供一种臂架装置, 该臂架装置结构紧凑、 竖 直空间利用率高, 为多节臂架的布置提供了空间, 从而增加臂架装置的总 长度, 并提高臂架的布料灵活性。 本发明的第二个目的是提供一种具有上 述臂架装置的工程机械。
为了实现上述第一个目的, 本发明提供了一种臂架装置, 包括至少五 节臂架, 各所述臂架依次铰接, 第三节臂架为拐弯臂架, 当所述臂架装置 处于折叠状态时, 前三节臂架折叠为 R型, 第四节臂架折叠于所述第三节 臂架的上方位置, 当所述臂架装置处于折叠状态时, 第三节臂架、 第四节 臂架以及第五节臂架折叠为 R型, 且所述第五节臂架折叠于所述第三节臂 架的下方位置。
优选地, 所述第五节臂架至少一部分为弧形结构。
优选地, 所述第五节臂架整体为弧形结构。
优选地, 所述第五节臂架与所述第四节臂架铰接的端部为弧形结构。 优选地, 至少包括六节臂架, 当所述臂架装置处于折叠状态时, 第四 节臂架、 第五节臂架以及第六节臂架折叠为 Z型。
优选地, 至少包括六节臂架, 当所述臂架装置处于折叠状态时, 所述 第四节臂架、 第五节臂架以及第六节臂架折叠为 R型, 且所述第六节臂架 折叠于所述第五节臂架和所述第三节臂架之间。
优选地, 所述第五节臂架和所述第六节臂架间设有伸缩油缸和连杆机 构, 以便驱动两臂架相对展开或收拢。
为了实现上述第二个目的, 本发明还提供了一种工程机械, 包括底盘 以及设置于所述底盘上的臂架装置, 所述臂架装置为上述任一项所述的臂 架装置, 由于上述的臂架装置具有上述技术效果, 具有该臂架装置的工程 机械也应具有相应的技术效果。
优选地, 所述工程机械具体为混凝土泵车。
本发明所提供的臂架装置, 包括至少五节臂架,各所述臂架依次铰接, 第三节臂架为拐弯臂架, 当所述臂架装置处于折叠状态时, 前三节臂架折 叠为 R型, 第四节臂架折叠于所述第三节臂架的上方位置, 当所述臂架装 置处于折叠状态时,第三节臂架、第四节臂架以及第五节臂架折叠为 R型, 且所述第五节臂架折叠于所述第三节臂架的下方位置。
本发明所提供的臂架装置折叠时, 第五节臂架折叠于第三节臂架的下 方, 充分利用了第三节臂架下方的空间, 与现有技术相比, 本文中的臂架 装置结构紧凑, 提高了臂架竖直方向空间的利用率, 为多节臂架的布置提 供空间, 在相同折叠空间内, 可以折叠臂架的数目更多, 从而增加了臂架 装置的总长度, 并避免了通过增加车桥数以提高臂架长度而导致的性能匹 配问题和高成本问题; 并且, 当在同一折叠空间内布置相同节数的臂架时, 本臂架装置中各节臂架可以分配比较大的空间, 可以在臂架上增加传动或 驱动机构, 有利于提高臂架的布料灵活性。
一种优选的方案, 所述第五节臂架与所述第四节臂架进行铰接的端部 为弧形结构。通过将第五节臂架与第四节臂架的铰接端部设置为弧形结构, 使得第五节臂架可折叠在第三节臂架的下方位置, 充分了利用了第三节臂 架下方的空间。
一种优选的方案, 至少包括六节臂架, 当所述臂架装置处于折叠状态 时, 第四节臂架、 第五节臂架以及第六节臂架折叠为 Z型; 或者, 包括至 少六节臂架, 当所述臂架装置处于折叠状态时, 所述第四节臂架、 第五节 臂架以及第六节臂架折叠为 R型, 且所述第六节臂架折叠于所述第五节臂 架和所述第三节臂架之间。 与现有技术六节臂架相比, 本臂架装置中第六 节臂架竖直方向可利用的空间比较大, 可以单独折叠为一列, 不仅增加了 臂架装置总的臂架长度, 而且有足够的空间布置驱动第六节臂架工作的机 构, 可以增加第六节臂架的回转角度, 提高臂架的布料灵活性。
附图说明
图 1为现有技术中一种典型的臂架装置的折叠示意图; 图 2为图 1所示臂架装置的俯视图;
图 3为本发明所提供的臂架装置的一种具体实施方式的结构示意图; 图 4为图 3所示臂架装置的前三节臂架处于折叠状态的结构示意图; 图 5为图 4所示前三节臂架的俯视图;
图 6为图 3所示臂架装置的第三节臂架、 第四节臂架、 第五节臂架以 及第六节臂架处于折叠状态的结构示意图;
图 7为图 6所示第三节臂架、 第四节臂架、 第五节臂架以及第六节臂 架处于折叠状态的俯视图;
图 8本发明所提供的臂架装置的另一种具体实施方式的结构示意图; 图 9为图 8所示臂架装置的俯视图。
其中, 图 1和图 2中附图标记与部件名称之间的对应关系为: 第一节臂架 Γ; 第二节臂架 2,; 第三节臂架 3,; 第四节臂架 4,; 第五 节臂架 5,; 第六节臂架 6,。
其中, 图 3至图 9中附图标记与部件名称之间的对应关系为: 第一节臂架 1 ; 第二节臂架 2; 第三节臂架 3; 第四节臂架 4; 第五节 臂架 5; 第六节臂架 6; 逆时针方向 VI; 顺时针方向 V2。
具体实施方式
本发明的目的旨为提供一种臂架装置, 该臂架装置结构紧凑、 竖直空 间利用率高。 此外, 本发明的另一目的旨为提供一种包括上述臂架装置的 工程机械。
不失一般性, 本文以臂架装置在混凝土泵车上的应用为例, 介绍本发 明的技术方案, 本领域内技术人员应当理解, 也不排除本发明在其他工程 机械上的应用。
为了使本领域的技术人员更好的理解本发明的技术方案, 下面结合附 图和具体实施方式对本发明作进一步的详细说明。
请参看图 3至图 7, 图 3为本发明所提供的臂架装置的一种具体实施 方式的结构示意图; 图 4为图 3所示臂架装置的前三节臂架处于折叠状态 的结构示意图; 图 5为图 4所示前三节臂架的俯视图; 图 6为图 3所示臂 架装置的第三节臂架、 第四节臂架、 第五节臂架以及第六节臂架处于折叠 状态的结构示意图; 图 7为图 6所示第三节臂架、 第四节臂架、 第五节臂 架以及第六节臂架处于折叠状态的俯视图。
本发明所提供的臂架装置包括至少五节臂架, 各所述臂架依次铰接 , 臂架装置的相邻臂架之间一般可以设有伸缩油缸, 伸缩油缸的一端与前一 节臂架铰接, 伸缩油缸的另一端可以通过连杆机构与后一节臂架铰接, 伸 缩油缸用于驱动后一节臂架进行展开或收拢动作。
需要说明的是, 在本申请中, 第一节臂架 1的端部与转台铰接, 相邻 的两节臂架中, 将靠近转台的臂架定义为前一节臂架, 另一节臂架定义为 后一节臂架。
臂架装置中第三节臂架 3为拐弯臂架, 当臂架装置处于折叠状态时, 前三节臂架折叠为 R型, 第四节臂架 4折叠于第三节臂架 3的上方位置, 当所述臂架装置处于折叠状态时, 第三节臂架 3、 第四节臂架 4以及第五 节臂架 5折叠为 R型,且第五节臂架 5折叠于第三节臂架 3的正下方位置。
本发明所提供的臂架装置折叠时, 第五节臂架 5折叠于第三节臂架 3 的正下方, 充分利用了第三节臂架 3下方的空间, 与现有技术相比, 本文 中的臂架装置结构紧凑, 提高了臂架竖直方向空间的利用率, 为多节臂架 的布置提供空间, 在相同折叠空间内, 可以折叠臂架的数目更多, 从而增 加了臂架装置的总长度, 并避免了通过增加车桥数以提高臂架长度而导致 的性能匹配问题和高成本问题; 并且, 当在同一折叠空间内布置相同节数 的臂架时, 本臂架装置中各节臂架可以分配比较大的空间, 可以在臂架上 增加传动或驱动机构, 有利于提高臂架的布料灵活性。
为了便于臂架折叠方式的实现, 可以将第五节臂架 5的结构设计为具 有至少一部分为弧形结构, 使得第五节臂架可折叠在第三节臂架的下方位 置, 充分了利用了第三节臂架下方的空间。 在具体实施方式中, 第五节臂 架 5整体为弧形结构, 或者第五节臂架 5与所述第四节臂架 4的铰接端部 为弧形结构。
在上述臂架装置的基 上, 对于至少具有六节臂架的臂架装置, 当臂 架装置处于折叠状态时, 第五节臂架和第六节臂架可以处于叠置, 即上下 层两列折叠放置, 下面给出臂架装置的两种具体的折叠方式。
请参考图 6和图 7, 在一种具体实施方式中, 臂架装置至少包括六节 臂架, 第五节臂架 5整体为弧形结构, 当所述臂架装置处于折叠状态时, 第四节臂架 4、 第五节臂架 5以及第六节臂架 6折叠为 Z型。
臂架装置工作前, 各节臂架的展开方向请参考图 3 , 第二节臂架 2与 第一节臂架 1、第三节臂架 3与第二节臂架 2、 以及第六节臂架 6与第五节 臂架 5之间的相对展开方向相同, 均沿逆时针方向 VI展开; 第四节臂架 4 与第三节臂架 3、第五节臂架 5与第四节臂架 4之间的相对展开方向相同, 均沿顺时针方向 V2展开。
与现有技术六节臂架相比, 本臂架装置中第六节臂架 6竖直方向可利 用的空间比较大, 可以单独折叠为一列, 不仅增加了臂架装置总的臂架长 度, 而且有足够的空间布置驱动第六节臂架 6工作的机构, 可以增加第六 节臂架 6的回转角度, 提高布料灵活性。
而且, Z型布置方式有利于臂架装置在比较小的空间中的展开。
请参考图 8和图 9, 图 8本发明所提供的臂架装置的另一种具体实施 方式的结构示意图, 因前三节臂架的折叠状态与现有技术相同, 本图中只 给出后几节臂架的折叠状态示意图; 图 9为图 8所示臂架装置的俯视图。
在该实施例中, 臂架装置至少包括六节臂架, 第五节臂架 5与所述第 四节臂架 4的铰接端部为弧形结构, 当所述臂架装置处于折叠状态时, 第 四节臂架 4、 第五节臂架 5以及第六节臂架 6折叠为 R型, 且第六节臂架 6折叠于第五节臂架 5和第三节臂架 3之间。
如图 8所示,本实施例中第五节臂架 5相对第四节臂架 4的展开方向、 第六节臂架 6相对第五节臂架 5的展开方向均为顺时针方向 V2。
该臂架折叠方式中第四节臂架 4、 第五节臂架 5 以及第六节臂架 6折 叠为 R型, 可以进一步充分利用前两节臂架之间的空间, 增加臂架装置整 体结构的紧凑性。
一般地, 相邻两臂架的展开或收拢是通过设置于两者间的伸缩油缸实 现的。
上述各实施方案中, 上述各实施例中第五节臂架 5和第六节臂架 6间 可以设有伸缩油缸和连杆机构, 以便驱动两臂架相对展开或收拢; 与现有 技术中第五节臂架和第六节臂架只设有伸缩油缸相比, 连杆机构可以实现 比较大的变幅运动, 第五节臂架 5和第六节臂架 6通过伸缩油缸和连杆机 构相配合方式实现相互运动, 可以增大第六节臂架 6的回转角度, 增加布 料灵活性。
当然, 本文中所述臂架装置中臂架的数量不仅局限于六节臂架, 还可 以为更多节臂架, 例如七节臂架, 在七节臂架的臂架装置中, 前六节臂架 的折叠方式可以为上述任一实施例中描述的折叠方式, 第六节臂架与第七 节臂架的布置方式可以根据混凝土泵车的使用需要布置, 例如当臂架处于 折叠状态时, 第六节臂架和第七节臂架折叠于同一水平面上, 与六节臂架 装置的混凝土泵车相比, 七节臂架具有比较高的工作灵活性。
在本发明各实施例中, 所谓 R型折叠即为该组折叠臂架中后一节臂架 相对前一节臂架的折叠方向均相同; 所谓 Z型折叠即为该组折叠臂架中后 一节臂架相对前一节臂架的折叠方向依次相反。
需要说明的是, 本文中所述的顺时针方向、 逆时针方向只是以图 3、 图 8中各臂架位置为参考, 为了表述技术方案的简洁方便, 本领域内技术 人员应当理解, 本文所用的方位词不应限制本发明的申请范围。
本发明还提供了一种工程机械, 包括底盘以及设置于所述底盘上的臂 架装置, 所述臂架装置为上述任一实施方式中所述的臂架装置。 由于上述 的臂架装置具有上述技术效果, 具有该臂架装置的工程机械也应具有相应 的技术效果。
在一种优选的实施方式中, 上述工程机械可以为混凝土泵车。
此外, 该混凝土泵车的其他部分的技术特征可以参见现有技术, 在此 不再赘述。
以上对本发明所提供的一种臂架装置及工程机械进行了详细介绍。 以 上所述仅是发明的优选实施方式的描述, 应当指出, 由于文字表达的有限 性, 而在客观上存在无限的具体结构, 对于本技术领域的普通技术人员来 说, 在不脱离本发明原理的前提下, 还可以做出若干改进和润饰, 这些改 进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1、 一种臂架装置, 包括至少五节臂架, 各所述臂架依次铰接, 第三节 臂架(3)为拐弯臂架, 当所述臂架装置处于折叠状态时, 前三节臂架折叠 为 R型, 第四节臂架(4)折叠于所述第三节臂架(3) 的上方位置, 其特 征在于, 当所述臂架装置处于折叠状态时, 第三节臂架(3)、 第四节臂架 (4) 以及第五节臂架(5)折叠为 R型, 且所述第五节臂架(5)折叠于 所述第三节臂架(3) 的下方位置。
2、根据权利要求 1所述的臂架装置,其特征在于,所述第五节臂架( 5 ) 至少一部分为弧形结构。
3、根据权利要求 2所述的臂架装置,其特征在于,所述第五节臂架( 5 ) 整体为弧形结构。
4、根据权利要求 2所述的臂架装置,其特征在于,所述第五节臂架( 5 ) 与所述第四节臂架(4)铰接的端部为弧形结构。
5、 根据权利要求 1-4任一项所述的臂架装置, 其特征在于, 包括至少 六节臂架, 当所述臂架装置处于折叠状态时, 第四节臂架(4)、 第五节臂 架(5) 以及第六节臂架(6)折叠为 Z型。
6、 根据权利要求 1-4任一项所述的臂架装置, 其特征在于, 包括至少 六节臂架, 当所述臂架装置处于折叠状态时, 所述第四节臂架(4)、 第五 节臂架(5) 以及第六节臂架(6)折叠为 R型, 且所述第六节臂架(6) 折叠于所述第五节臂架(5)和所述第三节臂架(3)之间。
7、根据权利要求 5所述的臂架装置,其特征在于,所述第五节臂架( 5 ) 和所述第六节臂架(6)间设有伸缩油缸和连杆机构, 以便驱动两臂架相对 展开或收拢。
8、根据权利要求 6所述的臂架装置,其特征在于,所述第五节臂架( 5 ) 和所述第六节臂架 ( 6 )间设有伸缩油缸和连杆机构, 以便驱动两臂架相对 展开或收拢。
9、一种工程机械, 包括底盘以及设置于所述底盘上的臂架装置, 其特 征在于, 所述臂架装置为权利要求 1-8任一项所述的臂架装置。
10、 根据权利要求 9所述的工程机械, 其特征在于, 所述工程机械具 体为混凝土泵车。
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CN201738589U (zh) * 2010-08-19 2011-02-09 三一重工股份有限公司 一种臂架系统及混凝土泵车
CN201924601U (zh) * 2010-09-29 2011-08-10 北汽福田汽车股份有限公司 折叠式臂架结构及具有该折叠式臂架结构的混凝土泵车
CN201857760U (zh) * 2010-10-25 2011-06-08 山推楚天工程机械有限公司 具有可折叠180°的混凝土泵车的第六节臂
CN102390307A (zh) * 2011-09-22 2012-03-28 三一重工股份有限公司 一种臂架装置及工程机械

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