WO2012068711A1 - 偏心力矩无级可调振动机构 - Google Patents

偏心力矩无级可调振动机构 Download PDF

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Publication number
WO2012068711A1
WO2012068711A1 PCT/CN2010/002228 CN2010002228W WO2012068711A1 WO 2012068711 A1 WO2012068711 A1 WO 2012068711A1 CN 2010002228 W CN2010002228 W CN 2010002228W WO 2012068711 A1 WO2012068711 A1 WO 2012068711A1
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Prior art keywords
eccentric
group
chain
sprocket
gear
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Application number
PCT/CN2010/002228
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English (en)
French (fr)
Inventor
唐忠盛
Original Assignee
Tang Zhongsheng
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
Priority claimed from CN2010206176993U external-priority patent/CN201940353U/zh
Priority claimed from CN2010105532707A external-priority patent/CN102107180B/zh
Application filed by Tang Zhongsheng filed Critical Tang Zhongsheng
Priority to US13/384,437 priority Critical patent/US8813589B2/en
Publication of WO2012068711A1 publication Critical patent/WO2012068711A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • B06B1/162—Making use of masses with adjustable amount of eccentricity
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18344—Unbalanced weights
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18544—Rotary to gyratory
    • Y10T74/18552—Unbalanced weight

Definitions

  • the present invention relates to the field of engineering machinery, and more particularly to an eccentric torque steplessly adjustable vibration mechanism.
  • BACKGROUND OF THE INVENTION At present, in various fields using an eccentric vibration mechanism, such as a hydraulic vibratory pile hammer, a hammer drill, a vibratory roller, a vibration crusher, and the like, which require vibration work, in order to improve work efficiency, it is necessary to select different optimal conditions for different working conditions.
  • the amplitude, as well as the machine that causes resonance damage through the resonant region during start-up and stop, are expected to be adjustable.
  • CN101581096 The name is "eccentric torque adjustable hydraulic vibratory pile hammer”.
  • the other gear meshes with the above-mentioned synchronous gear through the intermediate gear, and axially slides the adjustment shaft.
  • the lower group of eccentric blocks rotates relative to the upper group of eccentric blocks, and can also achieve the purpose of stepless frequency modulation.
  • the mechanism is large and accurate. The requirements are very high, the control is poor, and the cost is high.
  • the technical problem to be solved by the invention provides an eccentric moment continuously adjustable steplessly, simple structure, and the torque control confirmation Convenient, easy to install and maintain and low-cost eccentric torque stepless adjustable vibration mechanism.
  • the eccentric torque stepless adjustable vibration mechanism of the invention has at least four eccentric shafts mounted on the box body, wherein half of the eccentric shafts are arranged side by side in the upper part of the box body to form an upper eccentric group, and Half of the eccentric shafts are arranged side by side in the lower part of the box to form the lower eccentric group. All the eccentric shafts are equipped with eccentric blocks and gears. The gears of the upper eccentric group mesh with each other. The gears of the lower eccentric group mesh with each other. There is an eccentric shaft in the upper eccentric group.
  • the other eccentric shaft Connected to the hydraulic motor, the other eccentric shaft is equipped with an upper sprocket; the lower eccentric group has an eccentric shaft connected to the hydraulic motor, the other eccentric shaft is equipped with a lower sprocket, and the upper and lower sprocket are connected by a chain
  • the connecting rod between the two adjustment sprocket wheels is equipped with an elastic spring.
  • the invention breaks through the traditional eccentric torque adjustment mode, neither adopts a complicated adjustment mechanism for changing the moment of inertia of the eccentric block, nor does it adopt a simple frequency modulation scheme in which amplitude and frequency are simultaneously changed, but realizes by changing the phase difference of the upper and lower eccentric blocks.
  • the amplitude vector synthesis makes it easy and subtle to achieve independent adjustment of the amplitude.
  • the invention can realize the optional adjustment control of the mechanical working amplitude of the hydraulic vibratory pile hammer and the vibratory roller, so as to meet the high-efficiency construction requirements under different geological conditions, and also effectively solve the problems of the hydraulic vibratory hammer and the like when starting and stopping the machine.
  • the lack of resonance region is beneficial to prolong the service life of the machine, improve work efficiency and work adaptability, and also provides good operation for computerized control of eccentric vibration machinery. It has strong practicability and broad market application. prospect.
  • the invention can be applied to hydraulic vibration pile hammer, impact drill, vibratory roller, vibration crusher and other construction machinery.
  • FIG. 1 is a schematic structural view of a steplessly adjustable vibration mechanism of an eccentric moment of the present invention.
  • Figure 2 is a cross-sectional view taken along line A_A of Figure 1.
  • Fig. 3 is a view showing a state in which the eccentric block of the upper eccentric group and the eccentric block of the lower eccentric group of Fig. 1 are 180 degrees out of phase.
  • Fig. 4 is a schematic view showing a phase difference of 0 degrees between the eccentric block of the upper eccentric group and the eccentric block of the lower eccentric group of Fig. 1.
  • the casing 1, the first eccentric shaft 2, the second eccentric shaft 3, the third eccentric shaft 4, the fourth eccentric shaft 5, the first gear 6, the second gear 7, the third gear 8, and the fourth gear 9 a first eccentric block 10, a second eccentric block 11, a third eccentric block 12, a fourth eccentric block 13, a first hydraulic motor 14, a second hydraulic motor 15, an upper sprocket 16, a lower sprocket 17, and a right adjustment chain Wheel 18, left adjustment sprocket 19, elastic spring 20, chain 21, hydraulic cylinder 22, bearing 23, connecting rod 24, extension detailed description
  • the upper portion of the casing 1 is mounted with a first eccentric shaft 2 and a second eccentric shaft 3 side by side, and the first eccentric shaft 2 and the second eccentric shaft 3 constitute an upper eccentric group, the casing
  • the lower part of 1 is mounted with a third eccentric shaft 4 and a fourth eccentric shaft 5, and the third eccentric shaft 4 and the fourth eccentric shaft 5 constitute a lower eccentric group, and the above four eccentric shafts are connected to the casing 1 through bearings 23;
  • a first eccentric block 10, a first gear 6 and an upper sprocket 16 are mounted on the first eccentric shaft 2, and a second eccentric block 11 and a second gear 7 are mounted on the second eccentric shaft 3, and the second eccentric shaft 3 and the A hydraulic motor 14 is connected, the second gear 7 is meshed with the first gear 6;
  • the third eccentric shaft 4 is mounted with a third eccentric block 12, a third gear 8 and a lower sprocket 17, and the fourth eccentric shaft 5 is mounted thereon.
  • the two hydraulic motors 14, 15 respectively drive the second eccentric shaft 3 and the fourth eccentric shaft 5 to rotate, and at the same time, the first eccentric shaft 2 and the third eccentric shaft 4 connected via the gear set also rotate, thereby ensuring
  • the eccentric blocks of the upper and lower eccentric groups can be synchronized, so that the centrifugal force generated by the rotation of the eccentric block cancels each other in the horizontal direction, and the component in the vertical direction superimposes to generate the exciting force.
  • the two adjusting sprockets 18, 19 can be horizontally moved by the hydraulic cylinder 22, and when the two adjusting sprockets move to the upper and lower layers
  • the exciting forces in the vertical direction cancel each other to zero.
  • the control cylinder 22 moves the two adjusting sprockets 18, 19 to the right at the same time, as shown in FIG. 4, at this time, since the right adjusting sprocket 18 suddenly causes the force to pull the chain instantaneously.
  • the upper sprocket 16 changes the phase difference between the eccentric block of the upper eccentric group and the eccentric block of the lower eccentric group.
  • the exciting forces in the vertical direction are superimposed on each other to reach the maximum. Therefore, as long as the position of the two adjustment sprockets is moved by the hydraulic cylinder 22, the phase difference of the eccentric block of the upper and lower eccentric groups is changed, and the eccentric moment in the vertical direction can be realized by "0-maximum” and "" Continuous one-step adjustment control with a maximum of 0". Since the connecting rod '24 connecting the two adjusting sprockets is provided with a tension spring 20, 'so that the two adjusting sprockets can always be tightly connected to the chain 21 during the movement.
  • the eccentric shaft constituting the upper or lower eccentric group of the present invention is not limited to two, and a structure of a plurality of layers or a plurality of rows of eccentric groups may be employed.
  • the hydraulic motor used in the present invention is not limited to two, and may be used alone or in plurality, and may be replaced by a motor or other power.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Description

偏心力矩无级可调振动机构 技术领域 本发明涉及工程机械技术领域， 特别是一种偏心力矩无级可调振动机构。 背景技术 目前在使用偏心振动机构的各个领域， 如液压振动桩锤、 冲击钻机、 振动压路机、 振 动破碎机等需要振动作业的工程机械， 为提高工作效率， 需要针对不同工况选用不同的最 佳振幅， 以及为避免启动和停车时经过共振区域产生共振损坏机器， 都希望能做到偏心力 矩可调。
目前国内外各种偏心力矩调节方案中， 大致有几种形式： （1 )手动调整， 通过改变偏 心块相位或重量调节偏心力矩， 必须停机调整。 （2 )碰块两级式， 靠马达的正反转， 使活 动偏心块与固定偏心块夹角改变， 从而达到改变偏心矩的目的。该方法与国内手动调整原 理相似， 结构简单， 但变矩级别有限， 如中国专利公开号为 CN101503873, 名称为 "一种 偏心振动机构"。 ( 3)滑移齿轮式， 利用大螺旋角人字齿轮的轴向移动， 使与其啮合的两 组同步齿轮相对旋转， 从而达到无级调整偏心力矩的目的。 该机构显然能实现无级调频， 但结构较复杂， 且对齿轮同步精度要求很高， 可靠性差。 如中国专利公开号为
CN101581096 名称为 "偏心力矩可调式液压振动桩锤"。 (4) 四轴螺旋花键调整轴式， 调整轴上制造了两段旋向相反的大导程螺旋花键， 两端键上各装一齿轮， 其中一个齿轮与 下面的同步齿轮相啮合， 另一个齿轮则通过中间齿轮与上面的同步的齿轮相啮合， 轴向滑 动调整轴， 下组偏心块相对上组偏心块转动， 亦可以达到无级调频的目的， 但是， 该机构 庞大， 对精度要求非常高， 控制性差， 成本很高。
因此， 目前国内外现存振动桩锤各种调矩方式中， 有的是调节能力差， 有的是机构 复杂， 特别是齿轮刚性同步传动方式中， 由于结构复杂， 齿轮等传动件易于损坏， 造成了 无级调矩型振动机构至今难以推广应用。
发明内容
本发明所要解决的技术问题提供一种偏心力矩无级连续可调， 结构简单， 调矩控制 确认本 方便， 安装维护简单并且制作成本低的偏心力矩无级可调振动机构。
本发明以如下技术方案解决上述技术问题： 本发明偏心力矩无级可调振动机构的箱 体上安装有至少四根偏心轴， 其中一半数量的偏心轴并排在箱体上部构成上层偏心组， 另 一半数量的偏心轴并排在箱体下部构成下层偏心组， 所有偏心轴均安装有偏心块和齿轮， 上层偏心组的齿轮相互啮合， 下层偏心组的齿轮相互啮合， 上层偏心组中有一个偏心轴与 液压马达相连接， 另一个偏心轴安装有上链轮； 下层偏心组中有一个偏心轴与液压马达相 连接， 另一个偏心轴安装有下链轮， 上、 下链轮之间由链条连接； 上下两层偏心组之间设 有由连杆连接的两个调节链轮， 两个调节链轮均与链条连接， 连杆与安装在箱体上的液压 缸的伸缩杆固定连接。 ' 上述两个调节链轮之间的连接杆上装有松紧弹簧。 本发明突破传统偏心力矩调节方式， 既不采用改变偏心块转动惯量的复杂的调节机 构， 也不采用振幅、 频率同时变化的单纯调频方案， 而是通过控制改变上下层偏心块相位 差， 来实现的振幅矢量合成， 从而简单而巧妙的实现振幅独立调节。
本发明可实现液压振动桩锤及振动压路机等机械工作振幅的可选调节控制， 以满足不 同地质条件下的高效施工要求， 同时也有效解决了液压振动锤等机械在启动和停车时， 都 要经过共振区域的不足， 有利于延长机械的使用寿命， 提高工作效率和工作适应性， 也为 偏心振动机械的电脑化控制提供了很好的操作性，具有很强的实用性和广阔的市场应用前 景。 本发明可应用于液压振动桩锤、 冲击钻机、 振动压路机、 振动破碎机等工程机械。
附图说明
图 1是本发明偏心力矩无级可调振动机构的结构示意图。
图 2是图 1的 A_A剖视示意图。
图 3是图 1中上层偏心组的偏心块和下层偏心组的偏心块相位相差 180度的状态示 意图。
图 4是图 1中上层偏心组的偏心块和下层偏心组的偏心块相位相差 0度的状态示意 图。
图中： 箱体 1、 第一偏心轴 2、 第二偏心轴 3、 第三偏心轴 4、 第四偏心轴 5、 第一齿 轮 6、 第二齿轮 7、 第三齿轮 8、 第四齿轮 9、 第一偏心块 10、 第二偏心块 11、 第三偏心 块 12、 第四偏心块 13、 第一液压马达 14、 第二液压马达 15、 上链轮 16、 下链轮 17、 右 调节链轮 18、 左调节链轮 19、 松紧弹簧 20、 链条 21、 液压缸 22、 轴承 23、 连杆 24、 伸 具体实施方式
下面结合附图对本发明作进一步的描述： 箱体 1的上部安装有并排的第一偏心轴 2和第二偏心轴 3， 第一偏心轴 2和第二偏心 轴 3构成上层偏心组， 箱体 1的下部安装有并排的第三偏心轴 4和第四偏心轴 5， 第三偏 心轴 4和第四偏心轴 5构成下层偏心组， 上述四个偏心轴均通过轴承 23与箱体 1连接； 第一偏心轴 2上安装有第一偏心块 10、 第一齿轮 6和上链轮 16, 第二偏心轴 3上安装有 第二偏心块 11和第二齿轮 7， 第二偏心轴 3与第一液压马达 14相连接， 第二齿轮 7与第 一齿轮 6相啮合； 第三偏心轴 4上安装有第三偏心块 12、 第三齿轮 8和下链轮 17, 第四 偏心轴 5上安装有 四偏心块 13和第四齿轮 9, 第四偏心轴 5与第二液压马达 15连接， 第四齿轮 9与第三齿轮 8相啮合； 上链轮 16与下链轮 17之间由链条 21连接； 上下两层 偏心组之间设有左调节链轮 19和右调节链轮 18， 左调节链轮 19与右调节链轮 18之间由 连杆 24连接， 连杆 24上装有松紧弹簧 20， 两个调节链轮均与链条 21连接， 连杆 24与 安装在箱体 1上的液压缸 22的伸縮杆 25固定连接。 工作时， 由两个液压马达 14、 15分别带动第二偏心轴 3和第四偏心轴 5转动， 同时， 经 齿轮组连接的第一偏心轴 2与第三偏心轴 4也随之转动， 保证了上、下层偏心组的偏心块能 同步运转， 从而使偏心块转动产生的离心力在水平方向的分量相互抵消， 而垂直方向的分 量叠加便产生激振力。
由于上下层偏心组之间设有链条连接，从而保证了四个偏心轴在旋转运动时转速相同 并且使偏心块的相位差保持不变。
当需要改变上下层偏心组的偏心块相位差以获取不同激振力时，可通过液压缸 22驱动 使两个调节链轮 18、 19同时作水平移动， 当两个调节链轮移动至上下层偏心组的偏心块相 位相差 180度时，如图 3所示，在垂直方向上的激振力相互抵消为零。当需要增大激振力时， 只要控制液压缸 22使两个调节链轮 18、 19同时向右移动， 如图 4所示， 此时， 由于右调节 链轮 18突然使力使链条瞬间拉动上链轮 16，从而使上层偏心组的偏心块与下层偏心组的偏 心块的相位差发生改变， 当两层偏心组相位一致时， 其在垂直方向上的激振力相互叠加， 达到最大。 因此， 只要通过液压缸 22驱动使两个调节链轮的位置发生移动， 就会改变上下 层偏心组的偏心块相位差， 即可实现在垂直方向上的偏心力矩由 " 0—最大"和 "最大一 0" 的连续无级调节控制。 由于连接两个调节链轮的连杆' 24上设有张紧弹簧 20， '因此可使两个调节链轮在移动过 程中始终与链条 21保持紧密连接。
本发明构成上层或下层偏心组的偏心轴不限定于两根，也可以采用多层或多排偏心组 的结构。 本发明使用的液压马达不限定于两个， 可以用一个， 也可以用多个， 还可以用电 机或其它动力驱动代替。

Claims

权 利 要 求 书
1. 偏心力矩无级可调振动机构， 包括箱体， 箱体上安装有至少四根偏心轴， 其中一半数 量的偏心轴并排在箱体上部构成上层偏心组， 另一半数量的偏心轴并排在箱体下部构 成下层偏心组， 其特征在于： 所有偏心轴均安装有偏心块和齿轮， 上层偏心组的齿轮 相互啮合， 下层偏心组的齿轮相互啮合， 上层偏心组中有一个偏心轴与液压马达相连 接， 另一个偏心轴安装有上链轮； 下层偏心组中有一个偏心轴与液压马达相连接， 另 一个偏心轴安装有下链轮， 上、 下链轮之间由链条连接； 上下两层偏心组之间设有由 连杆连接的两个调节链轮， 两个调节链轮均与链条连接， 连杆与安装在箱体上的液压 缸的伸缩杆固定连接。
2. 根据权利要求 1所述偏心力矩无级可调振动机构， 其特征在于， 所述连接两个调节链 轮的连杆上安装有松紧弹簧。
PCT/CN2010/002228 2010-11-22 2010-12-31 偏心力矩无级可调振动机构 WO2012068711A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/384,437 US8813589B2 (en) 2010-11-22 2010-12-31 Eccentric moment stepless adjustable vibrating mechanism

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201010553270.7 2010-11-22
CN2010206176993U CN201940353U (zh) 2010-11-22 2010-11-22 偏心力矩无级可调振动机构
CN201020617699.3 2010-11-22
CN2010105532707A CN102107180B (zh) 2010-11-22 2010-11-22 偏心力矩无级可调振动机构

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