WO2013040795A1 - 臂架感应装置 - Google Patents

臂架感应装置 Download PDF

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Publication number
WO2013040795A1
WO2013040795A1 PCT/CN2011/080129 CN2011080129W WO2013040795A1 WO 2013040795 A1 WO2013040795 A1 WO 2013040795A1 CN 2011080129 W CN2011080129 W CN 2011080129W WO 2013040795 A1 WO2013040795 A1 WO 2013040795A1
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WO
WIPO (PCT)
Prior art keywords
boom
floating
sensing device
inductive switch
mandrel
Prior art date
Application number
PCT/CN2011/080129
Other languages
English (en)
French (fr)
Inventor
李铮
李庆良
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
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 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/CN2011/080129 priority Critical patent/WO2013040795A1/zh
Publication of WO2013040795A1 publication Critical patent/WO2013040795A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/54Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading

Definitions

  • the present invention relates to a boom sensing device with a boom device.
  • a boom device such as a concrete pump truck, a wheeled crane, etc.
  • the boom 1 is placed in a collapsed state on the boom support 4 (as shown in Figure 1), in order to avoid the arm movement and
  • the rigid contact and impact between the boom 1 and the boom support 4 are provided, and an elastic pad 2 is disposed on the boom support 4.
  • the boom support is provided with a signal switch to logically lock by recognizing whether the boom is completely closed. Or unlock other parts to move.
  • the existing signal switches are divided into two categories: The first is a travel switch. As shown in Fig. 2, such a stroke switch 3 has a swing arm 3a, and the initial angle of the swing arm of some switches and the length of the swing arm can also be adjusted.
  • the swing arm 3a rotates around the connecting shaft with the switch, and has a built-in spring to be elastically reset.
  • the second type is an inductive switch.
  • the inductive switch 5 has a fully enclosed structure except for the lower end cable outlet.
  • the gap ⁇ between the sensing end 5a and the steel structural member of the boom 1 is less than a certain value, the inductive switch 5 acquires a signal and transmits it to the control system.
  • the travel switch it is a moving mechanical structure, mechanical wear is unavoidable, and there is inevitably a gap between the moving parts.
  • the ability to protect against pollutants such as rain and water is limited. Engineering equipment is often exposed to a variety of climates and environments.
  • the degree of protection of exposed components there is a high requirement for the degree of protection of exposed components, so the service life and reliability of such switches on engineering equipment are not very high.
  • the exterior is completely enclosed, without any relatively moving parts, and always works in a non-contact state. Therefore, the degree of protection is very high. Directly reflected in higher service life and reliability, it is more suitable as a component exposed to engineering equipment.
  • the installation form is a rigid connection. If the installation dimension ⁇ is not strictly in accordance with the drawings, the installation value ⁇ is within the range value, and it is too far to be sensed, and if it is too close, it is easily crushed by the boom. Even if the assembly is correct, the elastic pad between the boom and the arm support is made of elastic material.
  • This connection method is easy to cause the induction switch to be crushed under the following four conditions: 1.
  • the boom is momentarily pressed to make the elastic pad exceed the static load compression amount, and the boom hits the sensor. 2.
  • the boom operation occurs in violation of the allowable value of the equipment, the boom will exceed the static load compression due to the inertia of the boom, and the boom will hit the sensor switch.
  • the elastic pad is made of organic material. If it is in a compressed state for a long time, it will produce irreversible deformation, and the thickness of the elastic pad may be thin when the arm is statically loaded. Causes the ⁇ value to become smaller or even disappear. 4.
  • the present invention provides a boom sensing device that avoids accidental damage of the inductive switch due to floating of the boom.
  • the present invention provides a boom sensing device comprising an inductive switch and a floating mechanism for floatingly mounting an inductive switch in a downward direction of the boom.
  • the floating mechanism includes: a mounting seat fixedly connected to the arm support; a floating component movably connected to the mounting seat, wherein the sensing switch is synchronously connected with the floating component; and the elastic component is disposed on the mounting seat and floating Between the components, the inductive switch has a tendency to move toward the boom. Further, the floating member is mounted in the mount in a linearly movable manner along the downward pressing direction of the boom.
  • the mounting seat is provided with a sleeve, the lower end of the sleeve has a first spring seat extending radially inwardly;
  • the floating member comprises a mandrel axially movable in the sleeve, the upper end of the mandrel having a second spring seat extending radially outward and disposed opposite the first spring seat, wherein the elastic member is located between the sleeve and the mandrel, and the two ends abut the first spring seat and the second spring seat, respectively.
  • the sleeve is adjustably mounted in the mounting seat along its axial position.
  • the inductive switch is mounted on a mandrel, and the mandrel is provided with an axially positioned retaining ring, and the retaining ring is located outside the sleeve.
  • the floating component further includes an adapter plate connected to the mandrel, and the inductive switch is connected to the adapter plate.
  • the floating member includes: a floating rod connected to the mounting seat through the first swinging rod and the second swinging rod to form a parallelogram mechanism, wherein the floating rod is provided with a mounting plate, and the sensing switch is fixedly connected to the mounting board And an elastic member disposed between the mount and the first swing lever and a limiting member located on a moving path of the second swing lever.
  • the floating component includes: a swinging bar, one end of which is hinged on the mounting seat, and the other end is provided with a mounting plate, wherein the inductive switch is fixedly connected to the mounting plate; and the elastic component disposed between the mounting seat and the swinging bar and A limiter located on the moving path of the pendulum.
  • the mounting plate is pivotally connected to the swinging bar, and the swinging bar is provided with a limiting structure defining a deflection angle of the mounting plate.
  • the floating mechanism further includes a protection bowl extending around the sensing end of the inductive switch.
  • the floating mechanism further includes a flexible protective cap that is sleeved on the sensing end of the inductive switch.
  • FIG 1 is a schematic structural view of a prior art boom-mounted device
  • FIG. 2 is a schematic structural view of a prior art boom signal switch
  • FIG. 3 is a prior art boom signal switch 4 is a schematic structural view of a boom sensing device according to a first embodiment of the present invention
  • FIG. 5 is a schematic view showing the boom sensing device shown in FIG. 4 in a compressed state
  • FIG. 7 is a schematic structural view of a boom sensing device according to a second embodiment of the present invention
  • FIG. 8 is a schematic structural view of a boom sensing device according to a third embodiment of the present invention
  • FIG. 9 is a structural modification of the boom sensing device according to the third embodiment of the present invention, and FIG.
  • the boom sensing device includes an inductive switch and a floating mechanism that floats the inductive switch in a downward direction of the boom. By setting the floating mechanism, the induction switch can be prevented from being damaged by pressure.
  • Various embodiments of the floating mechanism will be described below. 4 and 5 are views showing the structure of a boom sensing device according to a first embodiment of the present invention. As shown in FIG. 4 and FIG.
  • the floating mechanism includes: a mounting seat 11 fixedly coupled to the boom support 4; and a sleeve 12 movably coupled to the mounting seat 11 by a screw 18 having a first spring seat 12a a mandrel 13, axially movably located in the sleeve 12, having a second spring seat 13a disposed opposite the first spring seat 12a, wherein the inductive switch 14 moves synchronously with the mandrel 13; and the resilient member 15, located The sleeve 12 and the mandrel 13 abut between the first spring seat 12a and the second spring seat 13a.
  • the mandrel 13 is a floating member, preferably in the form of a sleeve, and is sleeved and fixed on the outer circumference of the inductive switch 14, thereby realizing synchronous movement of the inductive switch and the mandrel.
  • the mandrel 13 is provided with an axially positioned retaining ring 17 which is located outside the sleeve 12.
  • the inductive switch is fixed to the mandrel, and a flexible protective cap 16, such as a rubber cap, is sleeved on the sensing end of the inductive switch 14 to control the delta size, and the lower end ring groove of the mandrel is snapped into the retaining ring.
  • the three constitute a whole that can move up and down along the axis.
  • the mandrel is supported in the sleeve by an elastic member, and the lower end retaining ring of the mandrel prevents the integral shaft from coming out of the sleeve under the elastic force of the elastic member.
  • the sleeve is placed on the mount and can be positioned by means of set screws, which also facilitates adjustment of the mounting height.
  • the mounting height of the mount is controlled during installation, and the flexible protective cover is preferably in light contact with the boom.
  • the floating mechanism of this embodiment has the characteristics of simple structure, compactness, and reliable use.
  • Fig. 6 is a structural modification of the boom sensing device of the first embodiment of the present invention. As shown in FIG.
  • Fig. 7 is a schematic structural view of a boom sensing device according to a second embodiment of the present invention.
  • the floating mechanism of the present embodiment includes: a parallelogram bracket 20 including a fixing rod 21 connected to the boom support 4 and a float connected to the fixed rod 21 through the first swing link 22 and the second swing link 23.
  • the floating rod 24 is provided with an a mounting plate 25, the inductive switch 26 is fixedly coupled to the mounting plate 25; and an elastic member 27 disposed between the fixed rod 21 and the first swing link 22 and a limit member 28 disposed on the moving path of the second swing link 23 .
  • the first swing link 22, the second swing link 23, and the floating lever 24 are floating members, and the fixed lever 21 serves as a mount for mounting the first swing link 22 and the second swing link 23.
  • the sensing end of the inductive switch 26 is also provided with a flexible protective cap 29.
  • FIG. 8 is a schematic structural view of a boom sensing device according to a third embodiment of the present invention. As shown in FIG.
  • the floating mechanism includes: a fixing rod 31 fixedly connected to the arm support 4; a swinging rod 32, one end of which is hinged on the fixing rod 31, and the other end is provided with a mounting plate 33, wherein the sensing switch 34 is fixedly connected To the mounting plate 33; and an elastic member 36 disposed between the fixed rod 31 and the swing rod 32 and a limiting member 37 on the moving path of the swing rod.
  • the mounting plate 33 is a floating component
  • the sensing end of the inductive switch 34 is also sleeved with a flexible protective cap 38.
  • the flexible protective cap 38 is integrated with the inductive switch 34, the nut 39, and the swing bar 32. , it can be rotated around the hinge point a of the fixed rod 31.
  • FIG. 9 is a structural modification of the boom sensing device of the third embodiment of the present invention. As shown in FIG. 9, in the present modification, the mounting plate 33 is pivotally connected to the swinging lever 32, and the swinging lever 32 is provided with a limiting structure defining a deflection angle of the mounting plate 33.
  • the limiting structure includes a pin 33a on the mounting plate 33 and a swinging rod 32 having a large hole 32a at the pin 33a.
  • the pin 33a has a certain gap between the inner wall of the large hole 32a, so that the mounting plate is limited when it is rotated around the hinge point. Before a certain range of angles, the mounting plate does not fail due to excessive deflection angles in the adaptive boom contact plane.
  • a protective bowl 35 that is fixedly coupled to the mounting plate 33 and extends around the sensing end of the inductive switch is further included. When the boom is over pressed, the protection bowl 35 can sink together with the boom. After the boom returns to the position, the protection bowl rises with the boom, and the distance between the sensing switch and the arm contact plane is always limited.

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

Abstract

一种臂架感应装置,包括感应开关(14)和在臂架下压方向上浮动安装感应开关的浮动机构,上述浮动机构包括:安装座(11),固定连接至臂架支撑(4)上;浮动部件(13),活动连接至安装座,其中,感应开关与浮动部件同步移动地连接;以及弹性元件(15),设置在安装座与浮动部件之间,使感应开关具有朝向臂架方向运动的趋势。本臂架感应装置通过引入浮动机构,避免了感应开关因臂架浮动而意外损坏。

Description

臂架感应装置 技术领域 本发明涉及一种带臂架设备的臂架感应装置。 背景技术 带臂架设备 (如混凝土泵车、 轮式起重机等) 在非工作状态下, 臂架 1处于收拢 状态置于臂架支撑 4上(如图 1所示), 为避免收臂动作和行车颠簸中臂架 1与臂架支 撑 4之间刚性接触与冲击, 臂架支撑 4上设置一弹性垫 2。 基于安全与其他方面考虑 (如防止混凝土泵车在臂架未收拢状态下操作支腿或行 车等引发的安全事故等), 臂架支撑设置一信号开关,通过识别臂架是否完全收拢来逻 辑锁定或解锁其他部件运动。 现有的信号开关分为两类: 第一种为行程开关。 如图 2所示, 此类行程开关 3带有摆臂 3a, 有些开关的摆臂 的初始角度及摆臂长度还可调节。摆臂 3a绕与开关之间连接轴转动, 并内置弹簧, 可 弹性复位。 摆臂端部有滑轮 3b, 以减少与接触面摩擦力。 摆臂摆动角度超过一设定值 时, 开关开启 /关闭。 从而取得信号, 传递给控制系统。 第二种为感应开关。 如图 3所示, 此类感应开关 5除下端线缆出口外, 其余为全 封闭结构。 当感应端 5a与臂架 1的钢结构件之间间隙 δ小于一定值, 感应开关 5获取 信号, 传递给控制系统。 对于行程开关来说, 其为活动机械结构, 机械磨损无法避免, 且相对活动零件之 间不可避免存在缝隙。 对雨水灰尘等污染物防护能力受限制。 工程设备经常暴露在各 种气候与环境中工作。 对暴露元器件防护等级有较高要求, 因此此种开关在工程设备 上使用寿命与可靠性不是很高。 对于感应开关来说, 外表全封闭, 无任何相对活动零 件, 且一直工作在非接触状态。 因此防护等级很高。 直接体现在更高的使用寿命与可 靠性上, 更适合作为工程设备暴露的元器件。 但此种安装形式为刚性连接, 如未严格 按图纸保证安装尺寸 δ在范围值内, 太远则无法感应, 太近则容易被臂架压坏。 另即 使装配正确, 因臂架与臂架支撑之间弹性垫为弹性材料制作, 这种连接方式在以下四 种情况下容易导致感应开关被压坏: 一、 设备经过颠簸路面时臂架瞬时下压使弹性垫超过静载压缩量, 臂架撞击感应 器。 二、 臂架操作出现收臂速度超过设备使用允许值的违规操作时, 因为臂架下落惯 性, 使弹性垫超过静载压缩量, 臂架撞击感应开关。 三、 弹性垫为有机材料制作, 长期处于压缩状态会产生不可恢复变形, 且静载臂 架时弹性垫厚度有可能变薄。 导致 δ值变小甚至消失。 四、 弹性垫材料老化变脆变硬后被压碎, 导致 δ值变小甚至消失。 发明内容 本发明的目的在于提供一种臂架感应装置, 以避免感应开关因臂架浮动而意外损 坏。 为此, 本发明提供了一种臂架感应装置, 包括感应开关和在臂架下压方向上浮动 安装感应开关的浮动机构。 进一步地, 上述浮动机构包括: 安装座, 固定连接至臂架支撑上; 浮动部件, 活 动连接至安装座, 其中, 感应开关与浮动部件同步移动地连接; 以及弹性元件, 设置 在安装座与浮动部件之间, 使感应开关具有朝向臂架方向运动的趋势。 进一步地, 上述浮动部件沿臂架的下压方向可直线移动地安装在安装座中。 进一步地, 上述安装座中设有套筒, 套筒的下端具有沿径向向内延伸的第一弹簧 座; 浮动部件包括可轴向移动地位于套筒中的芯轴, 芯轴的上端具有沿径向向外延伸 并与第一弹簧座相对设置的第二弹簧座, 其中, 弹性元件位于套筒和芯轴之间, 两端 分别抵接第一弹簧座和第二弹簧座。 进一步地, 上述套筒沿其轴向位置可调地安装在安装座中。 进一步地, 上述感应开关安装在芯轴上, 芯轴上设有轴向定位的挡圈, 挡圈位于 套筒的外侧。 进一步地, 上述浮动部件还包括与芯轴连接的转接板, 感应开关与转接板连接。 进一步地, 上述浮动部件包括: 浮动杆, 通过第一摆杆和第二摆杆连接至安装座, 以构成平行四边形机构, 其中, 浮动杆上设置有安装板, 感应开关固定连接至安装板 上; 以及在安装座和第一摆杆之间设置的弹性元件和位于第二摆杆的移动路径上的限 位件。 进一步地, 上述浮动部件包括: 摆杆, 一端铰接在安装座上, 另一端设置有安装 板, 其中, 感应开关固定连接至安装板上; 以及在安装座和摆杆之间设置的弹性元件 和位于摆杆的移动路径上的限位件。 进一步地, 上述安装板枢接至摆杆上, 并且摆杆上设有限定安装板偏转角度的限 位结构。 进一步地, 上述浮动机构还包括在感应开关的感测端四周延伸的保护碗体。 进一步地, 上述浮动机构还包括套设在感应开关的感测端的柔性保护帽。 在本发明中, 通过引入浮动机构, 完全避免了感应开关因臂架浮动而意外损坏。 另外, 采用柔性保护套, 能保持 δ值恒定, 在保护感应开关的同时能使感应开关工作 在最可靠状态。 除了上面所描述的目的、 特征、 和优点之外, 本发明具有的其它目的、 特征、 和 优点, 将结合附图作进一步详细的说明。 附图说明 构成本说明书的一部分、 用于进一步理解本发明的附图示出了本发明的优选实施 例, 并与说明书一起用来说明本发明的原理。 图中: 图 1是现有技术的带臂架设备的结构示意图; 图 2是现有技术的一种臂架信号开关的一种结构示意图; 图 3是现有技术的一种臂架信号开关的另一种结构示意图; 图 4是本发明第一实施例的臂架感应装置的结构示意图; 图 5是图 4所示的臂架感应装置处于被压缩状态的示意图; 图 6是本发明第一实施例的臂架感应装置的结构变型; 图 7是本发明第二实施例的臂架感应装置的结构示意图; 图 8是本发明第三实施例的臂架感应装置的结构示意图; 以及 图 9是本发明第三实施例的臂架感应装置的结构变型, 附图标记说明
第一实施例
11安装座 4臂架支撑 12套筒 13芯轴 14感应开关 15弹性元件 16柔性保护帽 17挡圈 18螺钉 19转接板
12a第一弹簧座 13a第二弹簧座 第二实施例
20平行四边形支架
21固定杆 22第一摆杆
23第二摆杆 24浮动杆
25安装板 26感应开关
27弹性元件 28限位件
29柔性保护帽
第三实施例
31固定杆 32摆杆 33安装板 34感应开关 35保护碗体 36弹性元件
37限位件 38柔性保护帽 33a销钉 32a大孔。 具体实施方式 以下结合附图对本发明的实施例进行详细说明, 但是本发明可以由权利要求限定 和覆盖的多种不同方式实施。 在本发明中, 臂架感应装置包括感应开关和在臂架下压方向上浮动安装感应开关 的浮动机构。 通过设置浮动机构可以避免感应开关被压损坏。 下面对浮动机构的各实 施例进行说明。 图 4和图 5示出了根据本发明第一实施例的臂架感应装置的结构示意图。 如图 4 和图 5所示, 浮动机构包括: 安装座 11, 固定连接至臂架支撑 4上; 套筒 12, 通过螺 钉 18位置可调地连接至安装座 11上, 具有第一弹簧座 12a; 芯轴 13, 可轴向移动地 位于套筒 12中, 具有与第一弹簧座 12a相对设置的第二弹簧座 13a, 其中, 感应开关 14与芯轴 13同步移动; 以及弹性元件 15, 位于套筒 12和芯轴 13之间, 抵接在第一 弹簧座 12a和第二弹簧座 13a之间。 在本实施例中, 芯轴 13为浮动部件, 优选呈套体状, 套设固定在感应开关 14的 外周上, 从而实现感应开关与芯轴同步移动。 芯轴 13上设有轴向定位的挡圈 17, 该 挡圈 17位于套筒 12的外侧。 在本实施例中, 感应开关与芯轴固定,在感应开关 14的感测端套设有柔性保护帽 16, 例如橡胶帽, 以控制 δ尺寸, 芯轴下端环槽卡入挡圈。 三者构成一可沿轴线上下 运动的整体。 芯轴通过弹性元件支撑于套筒中, 芯轴下端挡圈可防止整体轴在弹性元 件弹力下向上脱出套筒。 套筒安放于安装座上, 通过紧定螺钉可定位, 也便于调节安 装高度。 安装时控制安装座安装高度, 以柔性保护盖与臂架轻度接触为宜。 本实施例 的浮动机构具有结构简单、 紧凑, 使用可靠的特点。 图 6是本发明第一实施例的臂架感应装置的结构变型。 如图 6所示, 浮动部件还 包括与芯轴 13连接的转接板 19, 感应开关 14与转接板 19连接。 当臂架过度下压时, 转接板 19可随臂架一起下沉, 臂架回复位置后, 转接板 19在弹性元件推力下随臂架 一同上升。 图 7是本发明第二实施例的臂架感应装置的结构示意图。 如图 7所示, 本实施例 的浮动机构包括: 平行四边形支架 20, 包括连接至臂架支撑 4的固定杆 21和通过第 一摆杆 22和第二摆杆 23连接至固定杆 21的浮动杆 24, 其中, 浮动杆 24上设置有安 装板 25, 感应开关 26固定连接至安装板 25上; 以及在固定杆 21和第一摆杆 22之间 设置的弹性元件 27和在第二摆杆 23的移动路径上设置的限位件 28。 在本实施例中, 第一摆杆 22、 第二摆杆 23和浮动杆 24为浮动部件, 固定杆 21 用作安装第一摆杆 22和第二摆杆 23的安装座。另外, 感应开关 26的感测端还套设有 柔性保护帽 29。该柔性保护帽 29、感应开关 26、和安装板 25通过螺母安装后成为一 整体, 与浮动杆 24、第一摆杆 22和第二摆杆 23成为平行四边形支架 20。在弹性元件 27的拉力与限位件 28的作用下保持确定状态, 该限位件 28例如调节螺钉起到限位微 调初始位置作用。 臂架过度下压时, 安装板 25可随臂架一起下沉, 臂架回复位置后, 安装板 25在弹性元件 27的拉力下随臂架一同上升。 图 8是本发明第三实施例的臂架感应装置的结构示意图。 如图 8所示, 浮动机构 包括: 固定杆 31, 固定连接至臂架支撑 4上; 摆杆 32, 一端铰接在固定杆 31上, 另 一端设置有安装板 33, 其中, 感应开关 34固定连接至安装板 33上; 以及在固定杆 31 和摆杆 32之间设置的弹性元件 36和位于摆杆的移动路径上的限位件 37。 在本实施例中, 安装板 33为浮动部件, 感应开关 34的感测端还套设有柔性保护 帽 38, 该柔性保护帽 38与感应开关 34、 螺母 39、 摆杆 32安装后成为一整体, 可绕 与固定杆 31的铰接点 a转动。在弹性元件 36拉力与限位件 37例如调节螺钉的作用下 保持确定状态, 该限位件起到限位微调初始位置作用。 臂架过度下压时, 安装板 33 可随臂架一起下沉, 臂架回复位置后, 安装板 35在弹性元件拉力下随臂架一同上升。 图 9是本发明第三实施例的臂架感应装置的结构变型。 如图 9所示, 在本变型结 构中, 安装板 33枢接至摆杆 32上, 并且摆杆 32上设有限定安装板 33偏转角度的限 位结构。 该限位结构包括位于安装板 33上的销钉 33a和摆杆 32在销钉 33a处设有大 孔 32a,销钉 33a和大孔 32a内壁间有一定间隙,使得安装板在绕铰接点转动时被限定 在一定角度范围之前, 不至于安装板在自适应臂架接触平面时因本身偏转角度过大而 失效。 在本变型结构中,还包括固定连接至安装板 33上的在感应开关的感测端四周延伸 的保护碗体 35。 当臂架过度下压时, 保护碗体 35可随臂架一起下沉, 臂架回复位置 后, 保护碗体随臂架一同上升, 始终将感测开关与臂架接触平面之间的距离限定在 δ 尺寸, 以达到最佳的感应效果。 在本发明中, 通过引入浮动机构, 完全避免了感应开关因臂架浮动而意外损坏。 另外, 采用柔性保护套, 能保持 δ值恒定, 在保护感应开关的同时能使感应开关工作 在最可靠状态。 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. 一种臂架感应装置, 其特征在于, 包括感应开关和在臂架下压方向上浮动安装 所述感应开关的浮动机构。
2. 根据权利要求 1所述的臂架感应装置, 其特征在于, 所述浮动机构包括: 安装座, 固定连接至臂架支撑上;
浮动部件, 活动连接至所述安装座, 其中, 所述感应开关与所述浮动部件 同步移动地连接; 以及
弹性元件, 设置在所述安装座与所述浮动部件之间, 使所述感应开关具有 朝向所述臂架方向运动的趋势。
3. 根据权利要求 2所述的臂架感应装置, 其特征在于, 所述浮动部件沿所述臂架 的下压方向可直线移动地安装在所述安装座中。
4. 根据权利要求 3所述的臂架感应装置, 其特征在于, 所述安装座中设有套筒, 所述套筒的下端具有沿径向向内延伸的第一弹簧 座;
所述浮动部件包括可轴向移动地位于所述套筒中的芯轴, 所述芯轴的上端 具有沿径向向外延伸并与所述第一弹簧座相对设置的第二弹簧座,
其中, 所述弹性元件位于所述套筒和所述芯轴之间, 两端分别抵接所述第 一弹簧座和第二弹簧座。
5. 根据权利要求 4所述的臂架感应装置, 其特征在于, 所述套筒沿其轴向位置可 调地安装在所述安装座中。
6. 根据权利要求 4所述的臂架感应装置, 其特征在于, 所述芯轴为套体, 所述感 应开关安装在所述芯轴上, 所述芯轴上设有轴向定位的挡圈, 所述挡圈位于所 述套筒的外侧。
7. 根据权利要求 4所述的臂架感应装置, 其特征在于, 所述浮动部件还包括与所 述芯轴连接的转接板, 所述感应开关与所述转接板连接。
8. 根据权利要求 2所述的臂架感应装置, 其特征在于, 所述浮动部件包括: 浮动杆, 通过第一摆杆和第二摆杆连接至所述安装座, 以构成平行四边形 机构, 其中, 所述浮动杆上设置有安装板, 所述感应开关固定连接至所述安装 板上; 以及
在所述安装座和第一摆杆之间设置的弹性元件和位于第二摆杆的移动路径 上的限位件。
9. 根据权利要求 2所述的臂架感应装置, 其特征在于, 所述浮动部件包括: 摆杆, 一端铰接在所述安装座上, 另一端设置有安装板, 其中, 所述感应 开关固定连接至所述安装板上; 以及
在所述安装座和摆杆之间设置的弹性元件和位于所述摆杆的移动路径上的 限位件。
10. 根据权利要求 9所述的臂架感应装置, 其特征在于, 所述安装板枢接至所述摆 杆上, 并且所述摆杆上设有限定所述安装板偏转角度的限位结构。
11. 根据权利要求 1至 10中任一项所述的臂架感应装置,其特征在于,所述浮动机 构还包括在所述感应开关的感测端四周延伸的保护碗体。
12. 根据权利要求 1至 10中任一项所述的臂架感应装置,其特征在于,所述浮动机 构还包括套设在感应开关的感测端的柔性保护帽。
PCT/CN2011/080129 2011-09-23 2011-09-23 臂架感应装置 WO2013040795A1 (zh)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001012079A (ja) * 1999-06-30 2001-01-16 Kyokuto Kaihatsu Kogyo Co Ltd コンクリートポンプ車
JP2008247310A (ja) * 2007-03-30 2008-10-16 Kyokuto Kaihatsu Kogyo Co Ltd 荷役車両
CN201464889U (zh) * 2009-06-29 2010-05-12 杭州专用汽车有限公司 臂架泵车臂架操作控制装置
CN201610347U (zh) * 2010-02-08 2010-10-20 施尧尧 吊具的开闭锁装置
CN102390308A (zh) * 2011-09-23 2012-03-28 长沙中联重工科技发展股份有限公司 臂架感应装置
CN202243120U (zh) * 2011-09-23 2012-05-30 中联重科股份有限公司 臂架感应装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001012079A (ja) * 1999-06-30 2001-01-16 Kyokuto Kaihatsu Kogyo Co Ltd コンクリートポンプ車
JP2008247310A (ja) * 2007-03-30 2008-10-16 Kyokuto Kaihatsu Kogyo Co Ltd 荷役車両
CN201464889U (zh) * 2009-06-29 2010-05-12 杭州专用汽车有限公司 臂架泵车臂架操作控制装置
CN201610347U (zh) * 2010-02-08 2010-10-20 施尧尧 吊具的开闭锁装置
CN102390308A (zh) * 2011-09-23 2012-03-28 长沙中联重工科技发展股份有限公司 臂架感应装置
CN202243120U (zh) * 2011-09-23 2012-05-30 中联重科股份有限公司 臂架感应装置

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