WO2014079184A1 - 一种带有u型吊臂的道路清障车 - Google Patents

一种带有u型吊臂的道路清障车 Download PDF

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Publication number
WO2014079184A1
WO2014079184A1 PCT/CN2013/073621 CN2013073621W WO2014079184A1 WO 2014079184 A1 WO2014079184 A1 WO 2014079184A1 CN 2013073621 W CN2013073621 W CN 2013073621W WO 2014079184 A1 WO2014079184 A1 WO 2014079184A1
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WIPO (PCT)
Prior art keywords
arm
boom
shaped
curved plate
wrecker
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PCT/CN2013/073621
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English (en)
French (fr)
Inventor
程磊
魏玉宏
蔡中义
陈志伟
王子铭
Original Assignee
徐州徐工随车起重机有限公司
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Application filed by 徐州徐工随车起重机有限公司 filed Critical 徐州徐工随车起重机有限公司
Publication of WO2014079184A1 publication Critical patent/WO2014079184A1/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
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic

Definitions

  • the present invention relates to a road wrecker, and more particularly to a road wrecker with a u-type boom. Background technique
  • Wreckers are special equipment used on highways and on national and provincial roads to eliminate accidents and malfunctioning vehicles.
  • road transportation has gradually developed into high-speed, intensive, specialized and containerized.
  • China's vehicle structure has also undergone major changes, such as:
  • the proportion of multi-axle vehicles and heavy-duty vehicles is gradually increasing. Coupled with other factors, the number of malignant accidents in China is increasing, and the difficulty of road wrecking vehicles is also more difficult.
  • the bigger the situation the more the wreckers owned by the current rescue team can no longer meet the needs of the current quarantine.
  • As a wrecker that guarantees smooth roads it must undoubtedly have to be heavy-duty to meet the needs of heavy-duty vehicles. This puts higher demands on the performance of the main operations such as lifting, lifting and pulling of the wrecker.
  • the domestic wrecker companies have accumulated certain experience, and have taken certain measures to solve the industry problems (both to reduce the quality of the whole vehicle and improve the performance of the main operations such as lifting, lifting and pulling).
  • the boom As far as the boom is concerned, when the road wrecker is working, the lifting and pulling performance is mainly used, and the boom is required to be resistant to bending and torsion.
  • the jib structure of the wrecker at home and abroad generally adopts a quadrilateral section, which is welded by the flange plate and the web.
  • the manufacturing process is relatively simple, has good bending rigidity, and is suitable for materials with relatively low strength;
  • the strength material can not fully exert the bearing capacity of the material, can not transmit the torque and lateral force well, and needs additional support; and the stress concentration is most likely to occur at the four corner points; the bottom plate and the web are subjected to large compressive stress. Local instability often occurs.
  • some prior art techniques employ hexagonal and other polygonal cross-section arms.
  • the commonality of these sections is that they use a large circular arc transition, and the web height is reduced, so that the stress condition is improved.
  • the actual calculated width of these sections is small, which is beneficial to improve the local instability resistance.
  • the plates of the telescopic arm do not produce local bending, and can transmit torque and lateral force well.
  • These polygonal cross-section telescopic arms can better exert the mechanical properties of the material and reduce the structural weight. At present, these cross-section forms have been widely adopted, and domestic wrecker companies have developed rapidly.
  • the t-position has been extended from 4t, 19t, 32t, 44t-3b3 ⁇ 4L to 54t.
  • the jib further enhances the bending and torsion resistance of the jib, takes into account the weight reduction and the improvement of the operating parameters, and combines the assemblability and maintainability to achieve modular design, production and assembly, while distinguishing the previous product features. Gradually form the personalized appearance of the wrecker products. Summary of the invention
  • the object of the present invention is to provide a road wrecker with a U-shaped boom that can overcome the bottleneck of the wrecker industry to reduce weight and improve operating parameters.
  • the present invention provides a road wrecker with a U-shaped boom
  • the sling of the road wrecker includes a basic arm that slides and cooperates with each other, an intermediate telescopic arm, and a a telescopic arm
  • the arm body of the basic arm, the intermediate telescopic arm and the distal telescopic arm is at least partially a U-shaped arm
  • the U-shaped arm comprises an upper curved plate and a lower curved plate welded to each other, the upper curved plate
  • the large curved groove plate is a U-shaped groove plate
  • the weld between the upper curved plate and the lower curved plate is located in a low stress region on both sides of the U-shaped arm.
  • the basic arm, the intermediate telescopic arm and the distal telescopic arm are sleeved and slidably engaged with each other.
  • At least two sets of slide slider assemblies are disposed between the base arm and the intermediate telescopic arm and the intermediate telescopic arm and the distal telescopic arm.
  • the slider slider assembly includes a slider assembly on the upper side, the left and right sides of the U-shaped arm, and a slider assembly that mates with the slider assembly.
  • the slider assembly is provided with an adjusting stud for adjusting a gap between the arm bodies.
  • a double variable cylinder support is further disposed below the basic arm.
  • an oil cup is provided on the slider assembly of the base arm and the intermediate telescopic arm.
  • the invention adopts the u-arm structure for the first time on the wrecker, which breaks through the bottleneck of the wrecker industry to reduce weight and improve the operating parameters on the road of heavy-duty development.
  • the U-shaped boom realizes modular design and simultaneously It combines the assemblability and maintainability to control the quality of the product. While improving design, production and assembly efficiency, it is more conducive to daily maintenance and maintenance, and prolongs product life.
  • FIG. 1 is a schematic view of a road wrecker of the present invention
  • FIG. 2 is a schematic structural view of a boom of the present invention
  • Figure 3 is a perspective view of the structure shown in Figure 2;
  • Figure 4 is a schematic cross-sectional view of the U-shaped boom of the present invention.
  • Figure 5 is a partial cross-sectional view of the structure shown in Figure 2. detailed description
  • the boom 100 of the road wrecker of the present invention includes a basic arm that is slidably engaged with each other, and an intermediate telescopic
  • the basic arm, the intermediate telescopic arm and the distal telescopic arm are sleeved and slidably engaged with each other.
  • the arm body of the basic arm, the intermediate telescopic arm and the distal telescopic arm is at least partially a U-shaped arm, as shown in FIG. 4; the U-shaped arm includes an upper curved plate 19 and a lower curved plate 20 welded to each other.
  • the upper curved plate 19 is a large arc-shaped grooved plate
  • the lower curved plate 20 is a U-shaped grooved plate
  • the weld between the upper curved plate 19 and the lower curved plate 20 is located at a low stress on both sides of the U-shaped arm. Area.
  • the slide slider assembly comprises an upper side of the U-shaped arm. a slider assembly on the left and right sides and a slider assembly that mates with the slider assembly. More preferably, the slider assembly is provided with an adjustment stud for adjusting the gap between the arm bodies.
  • the upper curved plate 19 and the lower curved plate 20 of the U-shaped arm can be made of materials of different plate thicknesses.
  • the upper curved plate 19 is a large arc-shaped grooved plate, and the tensile stress is large during operation, which improves the stability coefficient of the web;
  • the lower curved plate 20 is a U-shaped grooved plate, and the structure can advantageously improve the local resistance. The ability to lose stability.
  • the upper curved plate 19 is welded to the upper curved plate 20, and the weld between the upper curved plate 19 and the lower curved plate 20 is located in a low stress region on both sides of the U-shaped arm body, and the low stress region may be a stress detecting device Performing the positioning measurement, the structure of the present invention greatly reduces the influence of welding stress on the strength of the structural member.
  • the "U"-shaped cross section formed by the interface of the upper curved plate 19 and the cross section of the lower curved plate 20 of the present invention is a cross-sectional form of the arm which is more preferably subjected to force, and its transverse bending rigidity and The torsional stiffness is superior to other cross-section forms, which advantageously improves the reliability of the lifting and pulling operation of the wrecker boom.
  • the U-arm can reduce the material usage rate by about 10% compared with the hexagonal cross-section boom, especially For multi-section telescopic, the weight-reducing effect of the boom that works greatly is more significant.
  • the "U" type boom for lifting and pulling the utility vehicle of the present invention comprises a basic arm, an intermediate telescopic arm and a distal telescopic arm, and the structure can realize one section. , two or more sections of the boom telescopic.
  • the main structure of the basic arm of the present invention comprises a first U-shaped arm body 13, a first arm head 1, a first arm tail assembly 7, a double-variant-arc cylinder holder 6, and a first arm-head double crane.
  • Ear 14 first slider assembly 18, wire rope bracket 12;
  • the main structure of the intermediate telescopic arm includes a second U-shaped arm body 10, a second arm head 2, a second arm tail assembly 8, and a second slider assembly 16.
  • the second slide assembly 3 is composed;
  • the main structure of the distal telescopic arm includes a third U-shaped arm body 11, a third arm assembly 4, a third slider assembly 17, a double hoist pulley assembly 9, and a third The arm double lifting lug 15, the third sliding plate assembly 5.
  • the main body of the basic arm, the intermediate telescopic arm and the distal telescopic arm are composed of modular component welding, wherein the first arm head suspension ear 14 and the third arm head suspension ear 15, the second slider assembly 16, the third The slider assembly 17 and the first slider assembly 18, as well as the double hoisting pulley assembly 9, and the wire rope carrier 12 are mounted to the respective arm structures by means of inter-module assembly.
  • the present invention decomposes the entire boom structure into a plurality of modular components, which is more conducive to controlling the quality of the product and improving the efficiency of design and production assembly.
  • the first slider assembly 18 and the second slider assembly 16 of the base arm and the intermediate telescopic arm head slide on the second slider assembly 3 and the third slider assembly 5, respectively. , So on and so forth.
  • the above two sets of the slider slider assemblies of the present invention on the one hand reduce the wear of the basic arm and the intermediate telescopic arm head, the left and right rectangular flat slider assemblies on the arm body, and on the other hand, by processing the slide assembly, It is beneficial to ensure the gap between the arms, so that the assembly of the arms is greatly enhanced.
  • the invention also provides an oil cup on the basic arm and the intermediate telescopic arm head slider assembly, which is beneficial to the daily lubrication maintenance of the arm body.
  • the present invention adopts the following structure in addition to the U-shaped boom structure:
  • a slider assembly having a large arc-shaped contact surface;
  • a slider assembly having a rectangular plane on both sides of the intermediate telescopic arm and the distal telescopic arm body, near the arm tail position;
  • the basic arm and the intermediate telescopic arm arm Adjustable slider assembly on the side, and
  • the gap between the arm bodies is adjusted by adjusting the studs; on the lower side, a semi-circular arc-shaped slider assembly is arranged, so that there is less stress and better stress distribution at the arm body joints;
  • a double variable cylinder holder 6 is arranged below the basic arm.
  • the invention improves the torsional resistance through the U-shaped section.
  • the invention adjusts the arm gap by a reasonable slider arrangement, and further restricts the tendency of the boom to be twisted.
  • the present invention adopts a double-variable-type cylinder support. Supporting method to achieve the torsion and bending resistance of the boom under lifting and pulling conditions, so that the reliability of the boom under hoisting and pulling conditions can be guaranteed and continue to improve.
  • the invention adopts the U-arm structure type for the first time on the wrecker, which breaks through the bottleneck of the wrecker industry to reduce weight and improve the operating parameters on the road of heavy-duty development, and develops the jib structure type for the wrecker industry in the future. Provide a direction.
  • the arrangement of the slider and the basic arm structure are optimized on the basis of the U-section boom structure, which further improves the bending and torsion resistance of the boom.
  • the U-shaped boom of the invention realizes the modular design, takes into consideration the assemblability and maintainability, is more conducive to controlling the quality of the product, improves the efficiency of design, production and assembly, is more conducive to daily maintenance, and prolongs the product. Service life.
  • the jib of the wrecker As the jib of the wrecker, it distinguishes the ribbed and sturdy shape of the conventional quadrilateral and hexagonal jib. The overall appearance is more concise and smooth, and gradually forms the personalized appearance of the wrecker.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

一种带有U型吊臂的道路清障车，其中所述吊臂（100）包括相互滑动配合的基本臂、中间伸缩臂及末节伸缩臂，所述基本臂、中间伸缩臂及末节伸缩臂的臂体横截面至少部分为U型臂，所述U型臂包括相互焊接的上弯板（19）和下弯板（20），所述上弯板（19）为大圆弧槽形板，所述下弯板（20）为U型槽形板，且上弯板（19）与下弯板（20）之间的焊缝位于U型臂两侧的低应力区。本发明在清障车上采用U型臂结构，突破了清障车行业向重型化发展道路上减重与提高作业参数难以兼顾的瓶颈，同时兼顾可装配性和可维护性，有利于控制产品的质量。在提高设计及生产、装配效率的同时，更有利于日常维护保养，延长产品使用寿命。

Description

一种带有 U型吊臂的道路清障车 技术领域
本发明涉及一种道路清障车，特别是涉及一种带有 u型吊臂的道 路清障车。 背景技术
清障车是高速公路以及国、 省道路上用来排除事故、 故障车辆的 专用设备。 随着交通运输业的发展， 公路运输逐渐向高速化、 集约化、 专用化和集装箱化发展。此外，我国的车辆结构也发生了较大的变化， 例如： 多轴车和重型车比例逐步上升， 再加上其他因素， 我国的恶性 变通事故逐渐增多， 道路清障车面临的作业难度也越来越大， 所以， 当前救援车队拥有的清障车已经不能适应现在清障的需求。 作为保证 道路畅通的清障车， 无疑也必须重型化， 才能满足重型车辆的清障需 要。 这样对清障车的托举、 起吊和拉拽等主要作业的性能提出了更高 的要求。
纵观国内清障车产品， 基本上是从载货车底盘改装而来。 此外， 受国家相关法律法规的约束， 以及汽车底盘轴荷及最大总质量等方面 的限制， 现有的清障车产品不可能无止尽的重型化。 因此， 在现阶段 严重缺乏专用底盘的现状下， 如何既提高托举、 起吊及拉拽等主要作 业性能， 又能合理分配轴荷、 不超底盘允许的最大总质量的限制， 同 时还能满足高速公路、 国、 省道上对大型运输事故车辆的抢险救援工 作， 是目前国内清障车行业面临的一大难题。
经过多年的发展， 国内清障车企业积累了一定的经验， 也采取了 一定的措施来解决行业难题（既减轻整车整备质量又提高托举、 起吊 及拉拽等主要作业的性能） 。 就吊臂而言， 道路清障车作业时， 主要 用到起吊和拉拽性能， 要求吊臂必须抗弯和抗扭。 国内外清障车吊臂 结构普遍采用四边形截面， 由翼缘板和腹板焊接而成的， 它制造工艺 相对简单， 具有良好的抗弯刚度， 适用于强度比较低的材料； 对于高 强度材料不能充分发挥材料的承载能力， 不能很好地传递扭矩和横向 力， 需设附加支承； 而且在四个角点处最容易产生应力集中； 底板、 腹板受较大的压应力作用， 常出现局部失稳的情况。
为了避免上述不利因素， 提高腹板的稳定性， 部分现有技术采用 了六边形及其它多边形截面的吊臂。 这些截面的共同点是均采用大圆 弧过渡， 腹板高度减小， 使得受力状况得到改善。 而且这些截面实际 计算宽度较小， 有利于提高局部抗失稳能力。 伸缩臂各板不产生局部 弯曲， 且能较好地传递扭矩与横向力， 这些多边形截面的伸缩臂能较 好地发挥材料机械性能， 减轻结构自重。 目前这些截面形式被普遍的 采用， 国内的清障车企业快速发展， 《t位从 4t、 19t、 32t、 44t— ¾ ¾L 展到 54t。
但是再向超大吨位发展， 却遇到了不可逾越的瓶颈， 减重和提高 作业参数的矛盾难以兼顾。
众所周知， 如果结构型式不改变、 还要保持作业参数， 要想减重 就必须提高材料的机械性能。 但是， 高强度材料价格昂贵， 对加工和 焊接工艺要求也更高，而且适合的更高强度材料存不存在还是个问题， 一味的追求高强度的材料并不完全现实。 因此， 清障车行业要想继续 发展， 既要减重又要提高吊臂的抗弯和抗扭性能一一最终还得从结构 本身寻求突破， 研发新一代适合清障车起吊和拉拽用途的吊臂， 进一 步提升吊臂的抗弯和抗扭性能， 兼顾减重和提高作业参数， 兼顾可装 配性和可维护性， 实现模块化的设计、 生产及装配， 同时区别以往的 产品特征， 逐步形成清障车产品个性化的外观特点。 发明内容
本发明的目的是提出一种能够突破清障车行业向重型化发展道 路上减重与提高作业参数难以兼顾瓶颈的， 带有 U型吊臂的道路清障 车。
为实现上述目的， 本发明提供了一种带有 U型吊臂的道路清障 车， 道路清障车的吊臂包括相互滑动配合的基本臂、 中间伸缩臂及末 节伸缩臂， 所述基本臂、 中间伸缩臂及末节伸缩臂的臂体横截面至少 部分为 U型臂， 所述 U型臂包括相互焊接的上弯板和下弯板， 所述上 弯板为大圆弧槽形板， 所述下弯板为 U型槽形板， 且上弯板与下弯板 之间的焊缝位于 U型臂两侧的低应力区。
优选地， 所述基本臂、 中间伸缩臂及末节伸缩臂之间相互套接并 相互滑动配合。
优选地，所述基本臂和中间伸缩臂以及中间伸缩臂和末节伸缩臂 之间均设有至少两组滑板滑块组件。
优选地， 所述滑板滑块组件包括位于所述 U型臂上侧、左右两侧 的滑板总成以及与所述滑板总成相配合的滑块总成。
优选地， 所述滑块总成上设有调整臂体之间间隙的调节螺柱。 优选地， 在所述基本臂下方还设有双变幅缸支座。
优选地， 在基本臂和中间伸缩臂的滑块总成上设置油杯。
基于上述技术方案， 本发明的优点是：
本发明在清障车上首次采用了 u型臂结构，突破了清障车行业向 重型化发展道路上减重与提高作业参数难以兼顾的瓶颈， 该 U型吊臂 实现模块化的设计， 同时兼顾可装配性和可维护性， 有利于控制产品 的质量。 在提高设计及生产、 装配效率的同时， 更有利于日常维护保 养， 延长产品使用寿命。 附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请 的一部分， 本发明的示意性实施例及其说明用于解幹本发明， 并不构 成对本发明的不当限定。 在附图中：
图 1为本发明道路清障车的示意图；
图 2为本发明吊臂的结构示意图；
图 3为图 2所示结构的立体示意图；
图 4为本发明 U型吊臂的截面示意图；
图 5为图 2所示结构的局部截面剖视图。 具体实施方式
下面通过附图和实施例，对本发明的技术方案做进一步的详细描 述。
参见图 1〜图 5，其中示出本发明一种带有 U型吊臂的道路清障车 的优选实施例， 本发明道路清障车的吊臂 100包括相互滑动配合的基 本臂、 中间伸缩臂及末节伸缩臂， 优选地， 所述基本臂、 中间伸缩臂 及末节伸缩臂之间相互套接并相互滑动配合。 所述基本臂、 中间伸缩 臂及末节伸缩臂的臂体横截面至少部分为 U型臂， 如图 4所示； 所述 U型臂包括相互焊接的上弯板 19和下弯板 20， 所述上弯板 19为大圆 弧槽形板， 所述下弯板 20为 U型槽形板， 且上弯板 19与下弯板 20 之间的焊缝位于 U型臂两侧的低应力区。
进一步，所述基本臂和中间伸缩臂以及中间伸缩臂和末节伸缩臂 之间均设有至少两组滑板滑块组件， 优选地， 所述滑板滑块组件包括 位于所述 U型臂上侧、 左右两侧的滑板总成以及与所述滑板总成相配 合的滑块总成。 更优选地， 所述滑块总成上设有调整臂体之间间隙的 调节螺柱。
具体地， 本发明的工作原理和工作过程为：
U型臂的上弯板 19和下弯板 20可由不同板厚的材料制成。上弯 板 19为大圆弧槽形板，工作时其受拉应力较大，这便提高了腹板的稳 定系数； 下弯板 20为 U型槽形板， 该结构能够有利地提高抗局部失 稳的能力。 在制造时， 上弯板 19焊接于下弯板 20上面， 上弯板 19 与下弯板 20之间的焊缝位于 U型臂体两侧的低应力区， 该低应力区 可由应力检测装置进行定位测量， 本发明的此种结构大大降低了焊接 应力对结构件强度的影响。
经过大量实验及测定，本发明上弯板 19的界面和下弯板 20的截 面所构成的 "U" 型截面， 是一种受力较为理想的吊臂截面形式一一 其横向抗弯刚度和抗扭刚度优于其它截面形式， 有利的提高了清障车 吊臂起重和拉拽作业的可靠性。 并且， 在起重性能相同的情况下， U 型臂与六边型截面的吊臂相比， 可减少材料使用率 10%左右， 特别是 对于多节伸缩， 大幅度工作的吊臂， 其减重效果更加显著。
进一步， 参见图 2、 图 3和图 5， 本发明清障车上起吊和拉拽用 途的 "U" 型吊臂由基本臂， 中间伸缩臂及末节伸缩臂组成， 此种结 构可实现一节、 两节或多节吊臂的伸缩。
参见图 2和图 3，本发明基本臂的主体结构包括第一 U型臂体 13， 第一臂头 1， 第一臂尾组件 7， 双变幅缸支座 6， 第一臂头双吊耳 14， 第一滑块总成 18，钢丝绳托架 12; 中间伸缩臂的主体结构包括第二 U 型臂体 10， 第二臂头 2、 第二臂尾组件 8， 第二滑块总成 16， 第二滑 板总成 3组成； 末节伸缩臂的主体结构包括第三 U型臂体 11， 第三臂 头组件 4， 第三滑块总成 17， 双卷扬滑轮总成 9， 第三臂头双吊耳 15， 第三滑板总成 5。
基本臂、 中间伸缩臂及末节伸缩臂的主体结构由模块化的组件焊 接组成， 其中第一臂头默吊耳 14和第三臂头默吊耳 15、 第二滑块总 成 16、 第三滑块总成 17和第一滑块总成 18、 以及双卷扬滑轮总成 9、 钢丝绳托架 12采用模块间的装配方式安装到相应的臂体结构上。本发 明将整个吊臂结构分解成多个模块化的组件， 更有利于控制产品的质 量， 提高设计和生产装配的效率。
此外， 当吊臂伸缩时， 基本臂和中间伸缩臂臂头的第一滑块总成 18和第二滑块总成 16分别依次在第二滑板总成 3和第三滑板总成 5 上滑动， 依此类推。 这样， 本发明上述的两组滑板滑块组件一方面减 轻了基本臂和中间伸缩臂臂头、 左右两侧矩形平面滑块总成对臂体的 磨损， 另一方面通过加工滑板总成， 有利于保证臂体间的间隙， 使得 伸臂臂体的可装配性大大增强。 同时， 本发明在基本臂和中间伸缩臂 臂头滑块总成上还设置了油杯， 有利于臂体的日常润滑维护。
为了进一步增强吊臂的抗弯和抗扭性能，本发明除了采用 U型截 面的吊臂结构之外， 还采用了以下结构： 在滑块布置方面， 在中间伸 缩臂和末节伸缩臂臂尾处， 设置大圆弧形接触曲面的滑块总成； 在中 间伸缩臂和末节伸缩臂臂体两侧、 靠近臂尾位置， 设置矩形平面的滑 块总成； 在基本臂和中间伸缩臂臂头上侧设置可调节的滑块总成， 并 通过调节螺柱来调整臂体间的间隙； 在下侧， 设置呈半圆弧形大面积 的滑块总成， 使得在臂体搭接处有较小的应力和较好的应力分布； 在 左右两侧设置矩形平面滑块总成并加装油杯。
基本臂结构方面， 在基本臂下方设置双变幅缸支座 6。 当吊臂处 于侧向拉拽工况时或当吊臂进行单吊钩起吊时， 臂体在偏载状态下， 极易造成扭曲。 一方面本发明通过 U型截面提高抗扭性能， 另一方面 本发明通过合理滑块布置来调整臂体间隙， 并进一步限制吊臂发生扭 曲趋势， 最后本发明通过采用双变幅缸支座的支撑方式， 来实现吊臂 在起吊和拉拽工况下的抗扭和抗弯， 使得吊臂在起吊和拉拽工况下工 作的可靠性得以保证和继续提高。
本发明在清障车上首次采用 U型臂结构型式，突破了清障车行业 向重型化发展道路上减重与提高作业参数难以兼顾的瓶颈， 为今后清 障车行业吊臂结构型式的发展提供一种方向。
同时在 U型截面的吊臂结构型式的基础上对滑块的布置和基本 臂结构进行优化设计， 使得吊臂的抗弯和抗扭性能进一步提升。
本发明的 U型吊臂实现了模块化的设计，同时兼顾可装配性和可 维护性， 更有利于控制产品的质量， 提高设计及生产、 装配的效率， 更有利于日常维护保养， 延长产品使用寿命。
作为清障车用途的吊臂， 区别以往四边形和六边形吊臂有棱有角 的呆板外形， 其整体外观更加简洁流畅， 逐步形成了清障车产品个性 化的外观特点。
最后应当说明的是:以上实施例仅用以说明本发明的技术方案而 非对其限制； 尽管参照较佳实施例对本发明进行了详细的说明， 所属 领域的普通技术人员应当理解： 依然可以对本发明的具体实施方式进 行修改或者对部分技术特征进行等同替换； 而不脱离本发明技术方案 的精神， 其均应涵盖在本发明请求保护的技术方案范围当中。

Claims

权 利 要 求
1. 一种带有 U型吊臂的道路清障车， 道路清障车的吊臂包括相 互滑动配合的基本臂、 中间伸缩臂及末节伸缩臂， 其特征在于： 所述 基本臂、 中间伸缩臂及末节伸缩臂的臂体横截面至少部分为 u型臂， 所述 U型臂包括相互焊接的上弯板（19 )和下弯板（20 ) ， 所述上弯 板（19 )为大圆弧槽形板， 所述下弯板（20 )为 U型槽形板， 且上弯 板（19 ) 与下弯板（20 )之间的焊缝位于 U型臂两侧的低应力区。
2. 根据权利要求 1所述的带有 U型吊臂的道路清障车， 其特征 在于： 所述基本臂、 中间伸缩臂及末节伸缩臂之间相互套接并相互滑 动配合。
3. 根据权利要求 2所述的带有 U型吊臂的道路清障车， 其特征 在于： 所述基本臂和中间伸缩臂以及中间伸缩臂和末节伸缩臂之间均 设有至少两组滑板滑块组件。
4. 根据权利要求 3所述的带有 U型吊臂的道路清障车， 其特征 在于： 所述滑板滑块组件包括位于所述 U型臂上侧、 左右两侧的滑板 总成以及与所述滑板总成相配合的滑块总成。
5. 根据权利要求 4所述的带有 U型吊臂的道路清障车， 其特征 在于： 所述滑块总成上设有调整臂体之间间隙的调节螺柱。
6. 根据权利要求 1所述的带有 U型吊臂的道路清障车， 其特征 在于： 在所述基本臂下方还设有双变幅缸支座（6 ) 。
7. 根据权利要求 4所述的带有 U型吊臂的道路清障车， 其特征 在于： 在基本臂和中间伸缩臂的滑块总成上设置油杯。
PCT/CN2013/073621 2012-11-26 2013-04-02 一种带有u型吊臂的道路清障车 WO2014079184A1 (zh)

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