WO2012041076A1 - 折叠式臂架结构及混凝土泵车 - Google Patents

折叠式臂架结构及混凝土泵车 Download PDF

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Publication number
WO2012041076A1
WO2012041076A1 PCT/CN2011/075591 CN2011075591W WO2012041076A1 WO 2012041076 A1 WO2012041076 A1 WO 2012041076A1 CN 2011075591 W CN2011075591 W CN 2011075591W WO 2012041076 A1 WO2012041076 A1 WO 2012041076A1
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Prior art keywords
pitch
boom structure
cylinder
control valve
arms
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PCT/CN2011/075591
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English (en)
French (fr)
Inventor
韩润录
韩术亭
谭碧峰
旷永瑞
李涛
Original Assignee
北汽福田汽车股份有限公司
北京智科投资管理有限公司
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Application filed by 北汽福田汽车股份有限公司, 北京智科投资管理有限公司 filed Critical 北汽福田汽车股份有限公司
Publication of WO2012041076A1 publication Critical patent/WO2012041076A1/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

Definitions

  • the present invention relates to the field of construction machinery, and in particular to a folding boom structure and a concrete pump truck having the same. Background technique
  • the boom is usually divided into two types: folding type and telescopic type.
  • the folding type arm frame is used by construction machinery (such as concrete pump truck, crane, aerial work vehicle, etc.) because of its wide working range and large working space. broadly used.
  • the control valves of the cylinders are designed in a centralized control valve group.
  • 1 is a schematic view of a conventional folding boom structure including a control valve block 4', a tubing 3', a plurality of cylinders 2' and a plurality of pitch arms, wherein Each of the plurality of pitch arms is hinged to each other, and the control valve group 4' is integrated by a plurality of independent control valves, disposed at a position away from the oil cylinder 2, and respectively passed through the oil pipe 3, and The cylinders 2' are connected to each other to control the expansion and contraction of the cylinders 2', thereby achieving folding or unfolding of the adjacent two pitch arms.
  • the oil pipe of each cylinder 2' has to pass through the first few arms, which results in the total length of the oil pipe 3' is too long and the weight of the boom is too large.
  • the connection between the control valve group 4' and the oil pipe 3' of the cylinder 2' is designed to alternately connect the hose and the hard pipe due to the rotation of the boom, and the connection is made according to the conventional design as shown in FIG.
  • There are too many joints between the hose and the hard pipe which increases the number of points of oil leakage.
  • An object of the present invention is to provide a folding boom structure capable of changing a layout of a fuel pipe by changing a position of a control valve, thereby reducing the number of oil pipes and making the piping mode more compact. Based on this, the present invention also provides a concrete pump truck having the folding boom structure.
  • the present invention provides a folding boom structure including a hydraulic source, a main pipe, a plurality of control valves, a plurality of branch pipes, a plurality of oil cylinders, and a plurality of pitch arms, wherein Each of the plurality of pitch arms is hinged to each other, and the plurality of control valves are respectively connected to the hydraulic source through the main pipe, and are connected to the oil cylinder through the branch pipes to control the expansion and contraction of the oil cylinder Thereby controlling the adjacent two pitch arms to fold or unfold relative to each other, wherein the control valve is mounted on the pitch arm.
  • the plurality of control valves may be arranged to be connected in parallel to the main pipe.
  • the cylinder of the cylinder is hinged with a first of the two adjacent pitch arms, and the piston rod is hinged with a second one of the two adjacent pitch arms by a connecting rod,
  • a control valve is mounted on the first pitch arm.
  • the control valve is disposed on the pitch arm near each cylinder, the number of the main pipes is greatly reduced as compared with the arrangement of the conventional cylinder control valve group, thereby shortening the total length of the oil pipe. , reducing the weight of the boom and the difficulty of piping.
  • the number of joints between the hose and the hard tube is greatly reduced, which reduces the point of failure of the pipeline oil leakage and makes the arrangement more reasonable and reliable.
  • the concrete pump truck provided by the invention has a folding boom structure.
  • Figure 1 is a schematic view of a conventional folding boom structure
  • Figure 2 is a schematic view of a folding boom structure according to a preferred embodiment of the present invention
  • Figure 3 is a partial enlarged view of Figure 2;
  • FIG. 4 is a schematic view of a folding boom structure in accordance with another preferred embodiment of the present invention. Description of the reference numerals
  • Cylinder 21 Cylinder 22: : Piston rod
  • Control valve 4 Control valve 4,: Control valve group
  • the core of the invention is that the relative positions of the control valve and the pitch arm are changed, so that the arrangement of the relevant oil pipes is changed, so that the number of oil pipes is reduced.
  • the way of piping is changed to a more concise purpose.
  • the folding boom structure of the present invention comprises a hydraulic source 6, a main pipe 31, a plurality of control valves 4, a plurality of branch pipes 32, a plurality of oil cylinders 2 and a plurality of pitch arms 1, and a plurality of pitch arms 1
  • a plurality of control valves 4 are respectively connected to the hydraulic source 6 through the main pipe 31, and are connected to the oil cylinder 2 through the respective branch pipes 32 to control the expansion and contraction of the oil cylinder 2, thereby controlling the adjacent two pitch arms to fold each other.
  • the control valve 4 is mounted on the pitch arm 1.
  • the control valve 4 Since the control valve 4 is arranged on the pitch arm 1 near each cylinder, the number of main pipes is reduced from 10 to 2, compared with the arrangement of the conventional cylinder control valve group 4' in Fig. 1, with a 45 m pump
  • the total length of the conventional boom structure tubing is approximately 260 meters, and the total length of the tubing of the present invention is shortened to 100 meters.
  • the number of joints for connecting the hose and the hard pipe is also greatly reduced, which reduces the point of failure of the tubing oil leakage and makes the entire structure more reliable.
  • control valve 4 is connected in parallel to the main pipe such that the control valve 4 can be independent of each other to control the corresponding cylinder 2, respectively.
  • the cylinder 21 of the cylinder 2 of the present invention is hinged with the first pitch arm 11 of the adjacent two pitch arms, and the piston rod 22 of the oil cylinder 2 is adjacent to the piston rod 5 through the connecting rod 5.
  • the second pitch arm 12 of the two pitch arms is hinged, and the control valve 4 is mounted on the first pitch arm 11.
  • the control valve 4 is relatively small in volume and weight relative to the boom, so that the control valve is mounted on the boom arm without significantly affecting the movement of the boom.
  • the control valve 4 of the present invention is closer to the boom, between the control valve and the boom, than in the conventional folding boom structure in which the control valve block 4' is disposed on the vehicle body (not shown). The length of the tubing is greatly shortened, which improves the stability of the control valve control boom.
  • control valve 4 may be mounted on any one of the first few arms of the first pitch arm 11.
  • control valve is sequentially mounted on the corresponding pitch arm
  • mounting manner in which the control valve is mounted on the non-corresponding pitch arm is also included in the protection of the present invention.
  • the control valve on the distal arm is mounted on the front arm of the distal arm, so that two control valves are simultaneously mounted on the front arm of the distal arm. .
  • the position of the control valve can continue to move forward until it is moved to the first arm of the boom.
  • the advantage of this type of installation is that the position of the control valve can be more flexibly arranged, and by moving the control valve on the rear arm to the front arm, the distance between the control valve and the vehicle body when the boom is extended is shortened, thereby Reduce the burden on the entire boom by the control valve.

Description

折叠式臂架结构及混凝土泵车
技术领域
本发明涉及工程机械领域, 具体的, 涉及折叠式臂架结构及具有该折 叠式臂架结构的混凝土泵车。 背景技术
一般而言, 臂架通常分为折叠式和伸缩式两种, 其中, 折叠式臂架以 其工作范围广、 作业空间大的特点被工程机械 (如混凝土泵车、 起重机、 高空作业车等) 广泛采用。
目前, 在折叠式臂架的设计中, 油缸的控制阀均采用集中布置的控制 阀组的设计方式。 如图 1所示的传统的折叠式臂架结构的示意图, 该传统 的折叠式臂架结构包括控制阀组 4'、 油管 3'、 多个油缸 2'和多个节臂 Γ , 其中, 所述多个节臂 Γ中每相邻两个节臂相互铰接,所述控制阀组 4'由多 个独立的控制阀集成, 布置在远离油缸 2,的位置并分别通过所述油管 3, 与所述油缸 2'相连,控制油缸 2'伸缩, 从而实现相邻两个节臂的折叠或者 展开。
其中, 每个油缸 2'的油管都要经过前几节臂, 这样就导致了油管 3' 的总长度过长、 臂架的负重过大。 不仅如此, 连接控制阀组 4'与油缸 2' 的油管 3'由于需要随臂架转动而设计为软管与硬管交替连接的结构,依照 如图 1所示的传统的设计方式会造成连接软管与硬管的接头过多,从而造 成漏油的故障点增多。 此外, 在臂架运动的过程中也容易造成软管和软管 之间的缠绕。 发明内容
本发明的目的是提供一种折叠式臂架结构,该臂架结构能够通过改变 控制阀的位置来使油管的布置方式发生变化, 从而使油管的数目减少, 布 管方式变的更简洁。在此基础上, 本发明还提供了一种具有该折叠式臂架 结构的混凝土泵车。
为了实现上述目的, 本发明提供一种折叠式臂架结构, 该折叠式臂架 结构包括液压源、 主管、 多个控制阀、 多条支管、 多个油缸和多个节臂, 其中, 所述多个节臂中每相邻两个节臂相互铰接, 所述多个控制阀分别通 过所述主管与所述液压源相连,并通过所述各支管与所述油缸相连以控制 所述油缸伸缩, 从而控制所述相邻两个节臂相互折叠或者展开, 其中, 所 述控制阀安装在所述节臂上。
另外, 所述多个控制阀可以设置为并联连接到主管。
优选地, 所述油缸的缸筒与所述相邻两个节臂中的第一节臂铰接, 活 塞杆通过连杆与所述相邻两个节臂中的第二节臂铰接,所述控制阀安装在 所述第一节臂上。 除此之外, 控制阀安装在所述第一节臂的前几个节臂中 任意一节个臂上这种设计方式也是可行的。
通过本发明的上述技术方案, 由于控制阀在每个油缸附近的节臂上布 置, 与传统的油缸控制阀组的布置结构相比, 主管路的数量大大降低了, 从而缩短了油管的总长度, 降低了臂架的负重和布管难度。 此外, 伴随着 主管数量的锐减, 软管与硬管之间的接头数量也大大减少, 这样就减少了 管路漏油的故障点, 使布置更合理可靠。
本发明提供的混凝土泵车, 具有折叠式臂架结构。
本发明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发明的进一步理解, 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发明, 但并不构成对本发明的限 制。 在附图中:
图 1是传统的折叠式臂架结构的示意图;
图 2是根据本发明一种优选实施方式的折叠式臂架结构的示意图; 图 3是图 2的局部放大图;
图 4是根据本发明另一种优选实施方式的折叠式臂架结构的示意图。 附图标记说明
1 , 1': 节臂 11 : 第一节臂 12: 第二节臂
2 , 2' : 油缸 21 : 缸筒 22: : 活塞杆
3': 油管 31: 主管 32 : 支管
4 : 控制阀 4,: 控制阀组
5 : 连杆 6 : 液压源 具体实施方式
基于现有的折叠式臂架结构, 本发明进行了优化设计, 其核心在于控 制阀与节臂的相对位置发生了改变,从而使有关的油管的布置方式发生变 化, 达到使油管的数目减少, 布管方式变的更简洁的目的。
不失一般性,下面以混凝土泵车为例结合说明书附图具体说明本实施 方式。 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发 明, 并不用于限制本发明。
图 2是根据本发明一种优选实施方式的折叠式臂架结构的示意图, 图 如图 2所示, 本发明的折叠式臂架结构包括液压源 6、 主管 31、 多个 控制阀 4、 多条支管 32、 多个油缸 2和多个节臂 1, 多个节臂 1中每相邻 两个节臂相互铰接, 多个控制阀 4分别通过主管 31与液压源 6相连, 并 通过各支管 32与油缸 2相连以控制油缸 2伸缩, 从而控制相邻两个节臂 相互折叠或者展开, 其中, 控制阀 4安装在节臂 1上。 由于控制阀 4在每 个油缸附近的节臂 1上布置,与图 1中传统的油缸控制阀组 4'的布置结构 相比, 主管的数量由 10条减少到 2条, 以 45米泵车为例, 传统的臂架结 构油管的总长度加起来大概有 260米, 而本发明油管的总长度缩短为 100 米。 与此同时, 伴随着油管长度的大幅度缩短, 用来连接软管和硬管的接 头数目也随之大幅度减少, 这样就减少了油管漏油的故障点, 使整个结构 更为可靠。
优选地, 控制阀 4并联连接到主管, 这样设置可以使控制阀 4相互独 立, 分别控制对应的油缸 2。
图 3中, 本发明的所述油缸 2的缸筒 21与所述相邻两个节臂中的第 一节臂 11铰接, 所述油缸 2的活塞杆 22通过连杆 5与所述相邻两个节臂 中的第二节臂 12铰接, 所述控制阀 4安装在所述第一节臂 11上。 相对于 臂架而言, 控制阀 4的体积和重量都相对很小, 因此控制阀安装在节臂上 并不会对臂架的运动造成明显影响。 另外, 相比传统的折叠式臂架结构中 将控制阀组 4'布置在车身上(图中未示出) 的方式, 本发明的控制阀 4更 靠近臂架, 控制阀与臂架之间的油管长度大幅缩短, 使得控制阀控制臂架 的稳定性得到提升。
作为选择, 所述控制阀 4也可以安装在所述第一节臂 11的前几个节 臂中任意一个节臂上。
也就是说, 在本发明中, 不仅限于控制阀依次安装在对应节臂这一种 实施方式,控制阀安装在非对应节臂上的安装方式也是包括在本发明保护 范围之内的。 以图 4中的另一种优选实施方式为例, 末节臂上的控制阀被 安装在了末节臂的前一节臂上, 这样, 末节臂的前一节臂上同时安装有 2 个控制阀。 同样的, 控制阀的位置也可以继续前移, 直到移至臂架的第一 节臂上。 这种安装方式的优点是, 控制阀的位置可以更灵活的布置, 通过 将后一节臂上的控制阀移至前一节臂的方式,缩短臂架伸展时控制阀与车 身的距离, 从而降低控制阀对整个臂架的负担。
以上结合附图描述了本发明的优选实施方式, 但是, 本发明并不限于 上述优选实施方式中的具体细节, 在本发明的技术构思范围内, 可以对本 发明的技术方案进行多种简单变型,这些简单变型均属于本发明的保护范 围。 此外, 在上述具体实施方式中描述的各个具体技术特征, 在符合本发 明应用目的的情形下, 可以进行任意组合以形成其它可选择的实施方式。 本发明的保护范围由权利要求进行限定。

Claims

权利要求
1. 一种折叠式臂架结构,其特征在于:该折叠式臂架结构包括液压源
(6)、 主管 (31 )、 多个控制阀 (4)、 多条支管 (32)、 多个油缸 (2) 和 多个节臂 (1 ), 其中, 所述多个节臂 (1 ) 中的每相邻两个节臂相互铰接, 所述多个控制阀 (4) 分别通过所述主管 (31 ) 与所述液压源 (6) 相连, 并通过所述支管 (32) 分别与所述油缸 (2) 相连以控制所述油缸 (2)伸 缩, 从而控制所述相邻两个节臂相互折叠或者展开, 所述控制阀 (4) 安 装在所述节臂 (1 ) 上。
2. 根据权利要求 1所述的折叠式臂架结构,其特征在于,所述多个控 制阀 (4) 并联连接到所述主管 (31 )。
3. 根据权利要求 1或 2所述的折叠式臂架结构,其特征在于,所述油 缸 (2) 的缸筒 (21 ) 与所述相邻两个节臂中的第一节臂 (11 ) 铰接, 所 述油缸 (2) 的活塞杆 (22)通过连杆 (5 ) 与所述相邻两个节臂中的第二 节臂 (12) 铰接, 所述控制阀 (4) 安装在所述第一节臂 (11 ) 上。
4. 根据权利要求 1或 2所述的折叠式臂架结构,其特征在于,所述油 缸 (2) 的缸筒 (21 ) 与所述相邻两个节臂中的第一节臂 (11 ) 铰接, 所 述油缸 (2) 的活塞杆 (22)通过连杆 (5 ) 与所述相邻两个节臂中的第二 节臂 (12) 铰接, 所述控制阀 (4) 安装在所述第一节臂 (11 ) 的前几个 节臂中任意一个节臂上。
5. —种混凝土泵车, 其特征在于, 所述混凝土泵车采用如权利要求 1 至 4中任一项所述的折叠式臂架结构。
PCT/CN2011/075591 2010-09-29 2011-06-10 折叠式臂架结构及混凝土泵车 WO2012041076A1 (zh)

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