CN113503417B - Two-degree-of-freedom pipeline active dynamic vibration absorber and using method thereof - Google Patents
Two-degree-of-freedom pipeline active dynamic vibration absorber and using method thereof Download PDFInfo
- Publication number
- CN113503417B CN113503417B CN202110888255.6A CN202110888255A CN113503417B CN 113503417 B CN113503417 B CN 113503417B CN 202110888255 A CN202110888255 A CN 202110888255A CN 113503417 B CN113503417 B CN 113503417B
- Authority
- CN
- China
- Prior art keywords
- baffle
- base
- groove
- stiffness
- variable stiffness
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 229920001967 Metal rubber Polymers 0.000 claims description 36
- 239000003638 chemical reducing agent Substances 0.000 claims description 25
- 230000005284 excitation Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
- F16F7/116—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted on metal springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/04—Friction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
本发明涉及一种二自由度管路主动动力吸振器及其使用方法，其中该吸振器包括纵向动力吸振机构、横向动力吸振机构以及刚度调整机构三个部分；纵向动力吸振机构包括质量块、钢板弹簧、钢板弹簧支承挡板和吸振器底座；所述质量块由质量块上半、质量块下半、滚子轴与设在子轴外围的滚子组成；所述质量块中心开设有通孔，多层层叠的钢板弹簧由通孔穿过；所述滚子与层叠起来的钢板弹簧表面滚动接触，且滚子轴心线与通孔中心线垂直；所述钢板弹簧支承挡板与吸振器底座的上部分别开设有第一凹槽与第二凹槽，用于安装支撑钢板弹簧的两端，本发明只靠一个主动部件完成了两个自由度的刚度调整，进而达成吸振频率调整，缩减了吸振器重量，简化了控制过程。
The invention relates to a two-degree-of-freedom pipeline active dynamic vibration absorber and a method for using the same, wherein the vibration absorber comprises three parts: a longitudinal dynamic vibration absorption mechanism, a lateral dynamic vibration absorption mechanism and a rigidity adjustment mechanism; the longitudinal dynamic vibration absorption mechanism comprises a mass block, a steel plate Springs, leaf springs support the baffle plate and the base of the vibration absorber; the mass block is composed of the upper half of the mass block, the lower half of the mass block, the roller shaft and the roller arranged on the periphery of the sub-axis; the center of the mass block is provided with a through hole , the multi-layer stacked leaf springs are passed through the through holes; the rollers are in rolling contact with the surfaces of the stacked leaf springs, and the axis of the rollers is perpendicular to the center line of the through holes; the leaf springs support the baffle and the vibration absorber The upper part of the base is respectively provided with a first groove and a second groove, which are used to install and support both ends of the leaf spring. The present invention only relies on one active component to complete the adjustment of the stiffness of the two degrees of freedom, thereby achieving the adjustment of the vibration absorption frequency and reducing the The weight of the shock absorber is reduced and the control process is simplified.
Description
技术领域：Technical field:
本发明涉及一种二自由度管路主动动力吸振器及其使用方法，且能够随工况主动控制吸振频率的动力吸振器，属于减振技术领域。The invention relates to a two-degree-of-freedom pipeline active dynamic vibration absorber and a method for using the same. The dynamic vibration absorber can actively control the vibration absorption frequency according to working conditions, and belongs to the technical field of vibration reduction.
背景技术：Background technique:
管路系统在许多领域得到了应用，主要用于流体的运输，在机械装置运作过程中发挥着不可忽视的作用。管路在工作过程中不可避免地会发生振动，一是由于内部液体的流动与压力脉动产生振动，二是与管路连接的动力设备产生的振动传递给了管路系统；强烈的振动会导致管路连接处松动，导致产生疲劳磨损，减少管路寿命甚至产生断裂，因此采用有效的方法降低管路的振动水平具有重要的工程意义。Piping systems have been applied in many fields, mainly for the transportation of fluids, and play an important role in the operation of mechanical devices. The pipeline will inevitably vibrate during the working process, one is due to the internal liquid flow and pressure pulsation, and the other is the vibration generated by the power equipment connected to the pipeline is transmitted to the pipeline system; strong vibration will cause The loose connection of the pipeline will lead to fatigue wear, reduce the life of the pipeline and even cause fracture. Therefore, it is of great engineering significance to use an effective method to reduce the vibration level of the pipeline.
现有管路减振产品中对管路的固定主要采用橡胶块或刚性卡子进行固定，橡胶块虽有减振效果，但其对工作环境温度要求高，且寿命较短，需要经常更换；刚性卡子则无减振效果。In the existing pipeline vibration reduction products, the pipeline is mainly fixed with rubber blocks or rigid clips. Although the rubber blocks have a vibration reduction effect, they have high requirements on the working environment temperature and have a short life, so they need to be replaced frequently; rigidity The clip has no vibration damping effect.
针对管路的振动控制，采用动力吸振器进行振动控制是一种可行的办法，目前针对管路振动采用动力吸振器进行振动控制的研究与文献已有一定数量，但这些研究大多都是针对传统的被动动力吸振器的研究，在管路实际工作情况中，由于流体流动的不确定性以及与管路连接的动力设备的工作频率不可能为恒定值，管路的减振频率是有一定范围的，当使用仅有一个吸振频率的被动动力吸振器进行吸振时，激励频率与动力吸振器吸振频率产生一点偏差，就会使吸振能力大幅下降。虽然也有一些关于主动动力吸振器的研究，但这些主动动力吸振器大多只能实现单自由度的动力吸振，而管路的振动是多自由度的，因此，设计一种能在一个以上自由度进行动力吸振，同时还能随激励频率主动控制吸振频率的动力吸振器非常有必要。For the vibration control of pipelines, it is a feasible method to use dynamic vibration absorbers for vibration control. At present, there are a certain number of researches and literatures on pipeline vibrations using dynamic vibration absorbers for vibration control, but most of these studies are aimed at traditional In the actual working conditions of the pipeline, due to the uncertainty of fluid flow and the fact that the working frequency of the power equipment connected to the pipeline cannot be a constant value, the vibration reduction frequency of the pipeline has a certain range. Yes, when a passive dynamic vibration absorber with only one vibration absorption frequency is used for vibration absorption, a little deviation between the excitation frequency and the vibration absorption frequency of the dynamic vibration absorber will greatly reduce the vibration absorption capacity. Although there are some studies on active dynamic vibration absorbers, most of these active dynamic vibration absorbers can only achieve dynamic vibration absorption with a single degree of freedom, while the vibration of pipelines has multiple degrees of freedom. It is very necessary to perform dynamic vibration absorption while actively controlling the vibration absorption frequency with the excitation frequency.
发明内容：Invention content:
本发明的目的在于提供一种二自由度管路主动动力吸振器及其使用方法，该二自由度管路主动动力吸振器能够解决传统被动动力吸振器吸振频率单一的问题和一般的主动动力吸振器只能对单一自由度进行主动动力吸振的局限性。The purpose of the present invention is to provide a two-degree-of-freedom pipeline active dynamic vibration absorber and a method of using the same, which can solve the problem of a single vibration absorption frequency of the traditional passive dynamic vibration absorber and the general active dynamic vibration absorber. The limitation of active dynamic vibration absorption is only for a single degree of freedom.
本发明二自由度管路主动动力吸振器，其特征在于：包括纵向动力吸振机构、横向动力吸振机构以及刚度调整机构三个部分；The two-degree-of-freedom pipeline active dynamic vibration absorber of the present invention is characterized in that it includes three parts: a longitudinal dynamic vibration absorption mechanism, a lateral dynamic vibration absorption mechanism and a stiffness adjustment mechanism;
其中纵向动力吸振机构包括质量块、钢板弹簧、钢板弹簧支承挡板和吸振器底座；所述质量块由质量块上半、质量块下半、滚子轴与设在子轴外围的滚子组成；所述质量块中心开设有通孔，多层层叠的钢板弹簧由通孔穿过；所述滚子与层叠起来的钢板弹簧表面滚动接触，且滚子轴心线与通孔中心线垂直；所述钢板弹簧支承挡板与吸振器底座的上部分别开设有第一凹槽与第二凹槽，用于安装支撑钢板弹簧的两端，The longitudinal dynamic vibration absorption mechanism includes a mass block, a leaf spring, a leaf spring supporting baffle and a vibration absorber base; the mass block is composed of the upper half of the mass block, the lower half of the mass block, the roller shaft and the rollers arranged on the periphery of the sub-shaft The center of the mass block is provided with a through hole, and the multi-layer laminated leaf spring is passed through the through hole; the roller is in rolling contact with the surface of the laminated leaf spring, and the axis line of the roller is perpendicular to the center line of the through hole; The upper part of the leaf spring supporting baffle plate and the vibration absorber base are respectively provided with a first groove and a second groove, which are used to install and support the two ends of the leaf spring,
其中横向动力吸振机构包括质量块、两组的质量块挡板、螺旋弹簧、金属橡胶、变刚度挡板底座和变刚度挡板顶盖，两个变刚度挡板顶盖均是通过下部的第五凹槽与变刚度挡板底座的上部通过挡板螺栓与挡板螺母固定连接；所述质量块挡板下部带有凹槽，与吸振器底座上的凸起连接进行导向限位；两组的变刚度挡板顶盖与质量块挡板上部均分别设有第三凹槽与第四凹槽，以与螺旋弹簧与金属橡胶的两端头限位套接；钢板弹簧同时也穿过变刚度挡板顶盖和质量块挡板；The transverse dynamic vibration absorption mechanism includes a mass block, two sets of mass block baffles, a coil spring, a metal rubber, a variable-stiffness baffle base and a variable-stiffness baffle top cover. The upper part of the five grooves and the variable stiffness baffle base are fixedly connected by baffle bolts and baffle nuts; the lower part of the mass baffle is provided with grooves, which are connected with the protrusions on the vibration absorber base for guiding and limiting; two sets of The top cover of the variable stiffness baffle and the upper part of the mass baffle are respectively provided with a third groove and a fourth groove, so as to be connected with the two ends of the coil spring and the metal rubber; the leaf spring also passes through the variable Rigidity baffle top cover and mass baffle;
其中刚度调整机构包括变刚度挡板底座、变刚度挡板顶盖、滚珠丝杠、驱动滚珠丝杠转动的减速器和驱动减速器工作的伺服电机，所述变刚度挡板底座与滚珠丝杠通过下部的螺纹孔螺纹连接；滚珠丝杠左端与减速器输出端连接，减速器输入端与伺服电机输出端连接，滚珠丝杠穿过质量块挡板下部的凹槽。The stiffness adjustment mechanism includes a variable stiffness baffle base, a variable stiffness baffle top cover, a ball screw, a reducer that drives the ball screw to rotate, and a servo motor that drives the reducer to work. The variable stiffness baffle base and the ball screw It is threaded through the lower threaded hole; the left end of the ball screw is connected to the output end of the reducer, the input end of the reducer is connected to the output end of the servo motor, and the ball screw passes through the groove at the lower part of the mass block baffle.
进一步的，上述吸振器底座包括底板和设在底板一侧部的侧板，该侧板设有所述第二凹槽，所述钢板弹簧支承挡板上设有的第一凹槽与第二凹槽相对。Further, the above-mentioned vibration absorber base includes a bottom plate and a side plate arranged on one side of the bottom plate, the side plate is provided with the second groove, the first groove and the second groove provided on the leaf spring support baffle plate. The grooves are opposite.
进一步的，上述钢板弹簧支承挡板的下部与吸振器底座的底板通过螺栓固定连接；所述变刚度挡板底座下部带有凹槽，与吸振器底座上的凸起连接进行限位滑动。Further, the lower part of the above-mentioned leaf spring supporting baffle is fixedly connected with the bottom plate of the vibration absorber base by bolts; the lower part of the variable stiffness baffle base is provided with a groove, which is connected with the protrusion on the vibration absorber base to limit sliding.
本发明二自由度管路主动动力吸振器的工作方法，其特征在于：所述二自由度管路主动动力吸振器包括纵向动力吸振机构、横向动力吸振机构以及刚度调整机构三个部分；The working method of the two-degree-of-freedom pipeline active dynamic vibration absorber of the present invention is characterized in that: the two-degree-of-freedom pipeline active dynamic vibration absorber comprises three parts: a longitudinal dynamic vibration absorption mechanism, a lateral dynamic vibration absorption mechanism and a stiffness adjustment mechanism;
其中纵向动力吸振机构包括质量块、钢板弹簧、钢板弹簧支承挡板和吸振器底座；所述质量块由质量块上半、质量块下半、滚子轴与设在子轴外围的滚子组成；所述质量块中心开设有通孔，多层层叠的钢板弹簧由通孔穿过；所述滚子与层叠起来的钢板弹簧表面滚动接触，且滚子轴心线与通孔中心线垂直；所述钢板弹簧支承挡板与吸振器底座的上部分别开设有第一凹槽与第二凹槽，用于安装支撑钢板弹簧的两端，The longitudinal dynamic vibration absorption mechanism includes a mass block, a leaf spring, a leaf spring supporting baffle and a vibration absorber base; the mass block is composed of the upper half of the mass block, the lower half of the mass block, the roller shaft and the rollers arranged on the periphery of the sub-shaft The center of the mass block is provided with a through hole, and the multi-layer laminated leaf spring is passed through the through hole; the roller is in rolling contact with the surface of the laminated leaf spring, and the axis line of the roller is perpendicular to the center line of the through hole; The upper part of the leaf spring supporting baffle plate and the vibration absorber base are respectively provided with a first groove and a second groove, which are used to install and support the two ends of the leaf spring,
其中横向动力吸振机构包括质量块、两组的质量块挡板、螺旋弹簧、金属橡胶、变刚度挡板底座和变刚度挡板顶盖，两个变刚度挡板顶盖均是通过下部的第五凹槽与变刚度挡板底座的上部通过挡板螺栓与挡板螺母固定连接；所述质量块挡板下部带有凹槽，与吸振器底座上的凸起连接进行导向限位；两组的变刚度挡板顶盖与质量块挡板上部均分别设有第三凹槽与第四凹槽，以与螺旋弹簧与金属橡胶的两端头限位套接；钢板弹簧同时也穿过变刚度挡板顶盖和质量块挡板；The transverse dynamic vibration absorption mechanism includes a mass block, two sets of mass block baffles, a coil spring, a metal rubber, a variable-stiffness baffle base and a variable-stiffness baffle top cover. The upper part of the five grooves and the variable stiffness baffle base are fixedly connected by baffle bolts and baffle nuts; the lower part of the mass baffle is provided with grooves, which are connected with the protrusions on the vibration absorber base for guiding and limiting; two sets of The top cover of the variable stiffness baffle and the upper part of the mass baffle are respectively provided with a third groove and a fourth groove, so as to be connected with the two ends of the coil spring and the metal rubber; the leaf spring also passes through the variable Rigidity baffle top cover and mass baffle;
其中刚度调整机构包括变刚度挡板底座、变刚度挡板顶盖、滚珠丝杠、驱动滚珠丝杠转动的减速器和驱动减速器工作的伺服电机，所述变刚度挡板底座与滚珠丝杠通过下部的螺纹孔螺纹连接；滚珠丝杠左端与减速器输出端连接，减速器输入端与伺服电机输出端连接，滚珠丝杠穿过质量块挡板下部的凹槽；The stiffness adjustment mechanism includes a variable stiffness baffle base, a variable stiffness baffle top cover, a ball screw, a reducer that drives the ball screw to rotate, and a servo motor that drives the reducer to work. The variable stiffness baffle base and the ball screw Thread connection through the lower threaded hole; the left end of the ball screw is connected with the output end of the reducer, the input end of the reducer is connected with the output end of the servo motor, and the ball screw passes through the groove at the lower part of the mass baffle;
安装时，首先将滚珠丝杠穿过变刚度挡板底座下部的螺纹孔，随后将变刚度挡板底座安装于吸振器底座上，将变刚度挡板底座下部的凹槽嵌入吸振器底座表面上的凸起，并且滚珠丝杠右端安装进吸振器底座右侧的凹槽中，随后安装质量块挡板，同样其下部的凹槽嵌入吸振器底座表面上的凸起；之后将层叠的弹簧钢板穿过变刚度挡板底座、质量块挡板，并将两端嵌入吸振器底座上的第二凹槽和第一凹槽中，之后将变刚度挡板顶盖通过螺栓与螺母与变刚度挡板底座连接，并且将金属橡胶与螺旋弹簧嵌入变刚度挡板顶盖与变刚度挡板底座上的第三凹槽与凹槽中，变刚度挡板顶盖的圆柱凸起与变刚度挡板底座的圆柱凸起嵌入质量块挡板的空心圆柱凸起中，同时使金属橡胶与螺旋弹簧嵌入质量块挡板的第四凹槽中，最后将钢板弹簧支承挡板与吸振器底座用螺栓进行连接；When installing, first pass the ball screw through the threaded hole at the bottom of the variable stiffness baffle base, then install the variable stiffness baffle base on the vibration absorber base, and embed the groove at the lower part of the variable stiffness baffle base on the surface of the vibration absorber base. The right end of the ball screw is installed into the groove on the right side of the vibration absorber base, and then the mass baffle is installed, and the lower groove is also embedded in the protrusion on the surface of the vibration absorber base; Pass through the base of the variable stiffness baffle and the mass block baffle, and insert both ends into the second groove and the first groove on the base of the vibration absorber, and then connect the top cover of the variable stiffness baffle to the variable stiffness block through bolts and nuts. The plate base is connected, and the metal rubber and the coil spring are embedded in the third groove and groove on the variable stiffness baffle top cover and the variable stiffness baffle base, and the cylindrical protrusion of the variable stiffness baffle top cover and the variable stiffness baffle The cylindrical protrusion of the base is embedded in the hollow cylindrical protrusion of the mass block baffle, and the metal rubber and coil spring are embedded in the fourth groove of the mass block baffle, and finally the leaf spring supporting baffle and the vibration absorber base are bolted. connect;
纵向动力吸振原理为，当装置受到纵向载荷激励时，质量块与层叠起来的钢板弹簧作为纵向动力吸振组合会随着激励纵向运动，从而将装置受到的激励能量转移到质量块上。层叠起来的钢板弹簧由于弯曲过程中层与层之间存在摩擦作用，因此也在吸振过程中起到一定的阻尼作用；The principle of longitudinal dynamic vibration absorption is that when the device is excited by a longitudinal load, the mass block and the stacked leaf spring as a longitudinal dynamic vibration absorption combination will move longitudinally with the excitation, thereby transferring the excitation energy of the device to the mass block. Due to the friction between the layers during the bending process, the stacked leaf springs also play a certain damping role in the vibration absorption process;
横向动力吸振原理为，当装置受到横向载荷激励时，质量块由于内部装有滚子，因此质量块可在钢板弹簧上横向移动，质量块的横向移动通过质量块挡板均匀传递给螺旋弹簧与金属橡胶，因此质量块、质量块挡板、螺旋弹簧与金属橡胶作为横向动力吸振组合会随着激励横向运动，从而将装置受到的激励能量转移到质量块上；金属橡胶由于在压缩过程中金属丝之间会产生摩擦，因此也在吸振过程中起到一定的阻尼作用；The principle of lateral dynamic vibration absorption is that when the device is excited by lateral load, the mass block can move laterally on the leaf spring due to the rollers inside, and the lateral movement of the mass block is evenly transmitted to the coil spring and the coil spring through the mass block baffle. Metal rubber, so the mass block, the mass block baffle, the coil spring and the metal rubber will move laterally with the excitation as a combination of lateral dynamic vibration absorption, so as to transfer the excitation energy received by the device to the mass block; There will be friction between the wires, so it also plays a certain damping role in the vibration absorption process;
主动控制原理为，通过伺服电机带动减速器带动滚珠丝杠转动，由于滚珠丝杠与变刚度挡板底座为螺纹连接，因此滚珠丝杠转动带动变刚度挡板底座与变刚度挡板顶盖产生横向位移；首先，变刚度挡板底座与变刚度挡板顶盖的横向位置改变会改变钢板弹簧的工作长度，从而改变纵向动力吸振的刚度，进而改变纵向动力吸振频率；其次，变刚度挡板底座与变刚度挡板顶盖的横向位置改变同时会改变螺旋弹簧与金属橡胶的预压缩量，由于金属橡胶的刚度会随着压缩量的增大而增大，因此通过调整预压缩量可改变金属橡胶的刚度，进而改变横向动力吸振频率。The active control principle is that the reducer is driven by the servo motor to drive the ball screw to rotate. Since the ball screw and the base of the variable-stiffness baffle are threadedly connected, the rotation of the ball-screw drives the base of the variable-stiffness baffle and the top cover of the variable-stiffness baffle to generate Lateral displacement; first, the change of the lateral position of the variable stiffness baffle base and the variable stiffness baffle top cover will change the working length of the leaf spring, thereby changing the longitudinal dynamic vibration absorption stiffness, and then changing the longitudinal dynamic vibration absorption frequency; secondly, the variable stiffness baffle The change of the lateral position of the base and the top cover of the variable-stiffness baffle will also change the pre-compression amount of the coil spring and the metal rubber. Since the stiffness of the metal rubber will increase with the increase of the compression amount, it can be changed by adjusting the pre-compression amount. The stiffness of the metal rubber, thereby changing the lateral dynamic vibration absorption frequency.
本发明的优点及用途：Advantages and uses of the present invention:
本发明解决了传统被动动力吸振器吸振频率单一的问题和一般的主动动力吸振器只能对单一自由度进行主动动力吸振的局限性。实现了二自由度的主动动力吸振，同时只靠一个主动部件就完成了两个自由度的刚度调整，进而达成吸振频率调整，缩减了吸振器重量，简化了控制过程。The invention solves the problem that the vibration absorption frequency of the traditional passive dynamic vibration absorber is single and the limitation that the general active dynamic vibration absorber can only perform active dynamic vibration absorption for a single degree of freedom. Active dynamic vibration absorption with two degrees of freedom is realized, and at the same time, the stiffness adjustment of two degrees of freedom is completed by only one active component, thereby achieving the adjustment of vibration absorption frequency, reducing the weight of the vibration absorber and simplifying the control process.
本发明在动力吸振方面采用了传统的钢板弹簧与螺旋弹簧金属橡胶组合，并使用伺服电机、减速器与滚珠丝杠进行主动控制，它具有以下几个优点：The present invention adopts the traditional combination of leaf spring and coil spring metal rubber in terms of dynamic vibration absorption, and uses servo motor, reducer and ball screw for active control, and has the following advantages:
采用主动控制技术，通过控制两个方向动力吸振结构的刚度来改变动力吸振器的吸振频率，相较于传统被动式动力吸振器，其吸振频率范围得到提升，应用范围更广。Using active control technology, the vibration absorption frequency of the dynamic vibration absorber is changed by controlling the stiffness of the dynamic vibration absorption structure in two directions. Compared with the traditional passive dynamic vibration absorber, the vibration absorption frequency range is improved and the application range is wider.
采用一个质量块，通过特殊结构连接使得质量块具有两个方向的自由度，具有两个方向的动力吸振能力。相较于传统的单向主动动力吸振器，该发明具有两个方向的主动动力吸振能力，具有更好的吸振效果。A mass block is used, which is connected by a special structure, so that the mass block has two degrees of freedom, and has the ability to absorb dynamic vibrations in two directions. Compared with the traditional one-way active dynamic vibration absorber, the invention has two-direction active dynamic vibration absorption capability, and has better vibration absorption effect.
采用特殊结构，使得仅需要通过一个驱动装置就能控制两个方向的刚度变化，相较于传统的主动控制系统每个方向的控制都需要一个独立的驱动装置，该装置可以简化主动控制结构，减少吸振器质量与体积，可在更多有限制的环境中工作。Using a special structure, the stiffness changes in two directions can be controlled by only one driving device. Compared with the traditional active control system, each direction control requires an independent driving device. This device can simplify the active control structure. Reduced absorber mass and volume to work in more restricted environments.
附图说明：Description of drawings:
图1是本发明的立体图；Fig. 1 is the perspective view of the present invention;
图2是本发明的剖面图；Fig. 2 is the sectional view of the present invention;
图3是图2的局部放大图；Fig. 3 is a partial enlarged view of Fig. 2;
图4是螺旋弹簧与金属橡胶安装局剖视图Figure 4 is a sectional view of the installation of the coil spring and the metal rubber
图5是本发明的局部立体图。Fig. 5 is a partial perspective view of the present invention.
具体实施方式：Detailed ways:
本发明二自由度管路主动动力吸振器包括纵向动力吸振机构、横向动力吸振机构以及刚度调整机构三个部分,该三部分的部件个别具有穿插；The two-degree-of-freedom pipeline active dynamic vibration absorber of the present invention includes three parts: a longitudinal dynamic vibration absorption mechanism, a lateral dynamic vibration absorption mechanism and a stiffness adjustment mechanism, and the components of the three parts are individually interspersed;
其中纵向动力吸振机构包括呈矩形体状的质量块12、钢板弹簧6、钢板弹簧支承挡板7和吸振器底座4；所述质量块12由质量块上半1201、质量块下半1202、滚子轴1204与设在子轴1204外围的滚子1203组成，该质量块上半1201、质量块下半1202可以是独立加工的长方体，然后开设用于穿过钢板弹簧6的通孔，或者由一整块矩形体加工出通孔和用于穿设滚子的孔道；The longitudinal dynamic vibration absorption mechanism includes a rectangular
钢板弹簧6可以3-8层层叠后穿过穿孔；滚子1203与层叠起来的钢板弹簧6表面滚动接触，实现钢板弹簧6在其长度方向可以顺畅滚动，滚子1203轴心线与通孔中心线垂直；钢板弹簧支承挡板7与吸振器底座4的上部分别开设有第一凹槽701与第二凹槽401，用于安装支撑钢板弹簧6的两端；吸振器底座4包括底板和设在底板一侧部的侧板，该侧板设有所述第二凹槽401，所述钢板弹簧支承挡板7上设有的第一凹槽701与第二凹槽401相对。The
其中横向动力吸振机构包括质量块12、两组的质量块挡板11、螺旋弹簧9、金属橡胶10、变刚度挡板底座1和变刚度挡板顶盖8，质量块12位于两组质量块挡板11之间，两组两个变刚度挡板顶盖8均是通过下部的第五凹槽801与变刚度挡板底座1的上部通过挡板螺栓102与挡板螺母103固定连接；所述质量块挡板11下部带有凹槽1103（该凹槽1103也具有避让滚珠丝杆的槽孔），该凹槽1103与吸振器底座4上的凸起403连接进行导向限位；两组的变刚度挡板顶盖8与质量块挡板11上部均分别设有第三凹槽802与第四凹槽1101，以与螺旋弹簧9与金属橡胶10的两端头限位套接；钢板弹簧6同时也穿过变刚度挡板顶盖8和质量块挡板11；在第三凹槽802（及凹槽104）与第四凹槽1101（每个质量块挡板11具有两个）内具有圆柱凸起105和用于嵌入圆柱凸起105的空心圆柱凸起1102，通过圆柱凸起105和空心圆柱凸起1102套接配合，避免螺旋弹簧9、金属橡胶10脱离两端的凹槽。The transverse dynamic vibration absorption mechanism includes a
其中刚度调整机构包括变刚度挡板底座1、变刚度挡板顶盖8、滚珠丝杠2、驱动滚珠丝杠2转动的减速器3和驱动减速器3工作的伺服电机5，所述变刚度挡板底座1与滚珠丝杠2通过下部的螺纹孔101螺纹连接；滚珠丝杠2左端与减速器3输出端连接，减速器3输入端与伺服电机5输出端连接，滚珠丝杠2穿过质量块挡板11下部的凹槽1103。The stiffness adjustment mechanism includes a variable
上述钢板弹簧支承挡板7的下部与吸振器底座4的底板通过螺栓702固定连接；所述变刚度挡板底座1下部带有第六凹槽106，与吸振器底座4上的凸起403连接进行限位滑动。The lower part of the above-mentioned leaf spring supporting
本发明二自由度管路主动动力吸振器的工作方法，The working method of the two-degree-of-freedom pipeline active dynamic vibration absorber of the present invention,
安装时，首先将滚珠丝杠2穿过变刚度挡板底座1下部的螺纹孔，随后将变刚度挡板底座1安装于吸振器底座4上，将变刚度挡板底座1下部的凹槽嵌入吸振器底座4表面上的凸起，并且滚珠丝杠右端安装进吸振器底座4右侧的凹槽402中，随后安装质量块挡板11，同样其下部的凹槽嵌入吸振器底座4表面上的凸起；之后将层叠的弹簧钢板6穿过变刚度挡板底座1、质量块挡板11，并将两端嵌入吸振器底座4上的第二凹槽401和第一凹槽701中，之后将变刚度挡板顶盖8通过螺栓102与螺母103与变刚度挡板底座1连接，并且将金属橡胶9与螺旋弹簧10嵌入变刚度挡板顶盖8与变刚度挡板底座1上的第三凹槽802与凹槽104中，变刚度挡板顶盖8的圆柱凸起803与变刚度挡板底座1的圆柱凸起105嵌入质量块挡板11的空心圆柱凸起1102中，同时使金属橡胶9与螺旋弹簧10嵌入质量块挡板11的第四凹槽1101中，最后将钢板弹簧支承挡板7与吸振器底座4用螺栓702进行连接；When installing, first pass the
纵向动力吸振原理为，当装置受到纵向载荷激励时，质量块12与层叠起来的钢板弹簧6作为纵向动力吸振组合会随着激励纵向运动，从而将装置受到的激励能量转移到质量块上。层叠起来的钢板弹簧由于弯曲过程中层与层之间存在摩擦作用，因此也在吸振过程中起到一定的阻尼作用；The principle of longitudinal dynamic vibration absorption is that when the device is excited by a longitudinal load, the
横向动力吸振原理为，当装置受到横向载荷激励时，质量块12由于内部装有滚子1203，因此质量块可在钢板弹簧上横向移动，质量块12的横向移动通过质量块挡板11均匀传递给螺旋弹簧10与金属橡胶9。因此质量块、质量块挡板11、螺旋弹簧10与金属橡胶9作为横向动力吸振组合会随着激励横向运动，从而将装置受到的激励能量转移到质量块上。金属橡胶由于在压缩过程中金属丝之间会产生摩擦，因此也在吸振过程中起到一定的阻尼作用；The principle of lateral dynamic vibration absorption is that when the device is excited by lateral load, the
主动控制原理为，通过伺服电机5带动减速器3带动滚珠丝杠2转动，由于滚珠丝杠2与变刚度挡板底座1为螺纹连接，因此滚珠丝杠2转动带动变刚度挡板底座1与变刚度挡板顶盖8产生横向位移。首先，变刚度挡板底座1与变刚度挡板顶盖8的横向位置改变会改变钢板弹簧6的工作长度，从而改变纵向动力吸振的刚度，进而改变纵向动力吸振频率。其次，变刚度挡板底座1与变刚度挡板顶盖8的横向位置改变同时会改变螺旋弹簧10与金属橡胶9的预压缩量，由于金属橡胶的刚度会随着压缩量的增大而增大，因此通过调整预压缩量可以改变金属橡胶9的刚度，进而改变横向动力吸振频率。The active control principle is that the
本发明的优点及用途：Advantages and uses of the present invention:
本发明解决了传统被动动力吸振器吸振频率单一的问题和一般的主动动力吸振器只能对单一自由度进行主动动力吸振的局限性。实现了二自由度的主动动力吸振，同时只靠一个主动部件就完成了两个自由度的刚度调整，进而达成吸振频率调整，缩减了吸振器重量，简化了控制过程。The invention solves the problem that the vibration absorption frequency of the traditional passive dynamic vibration absorber is single and the limitation that the general active dynamic vibration absorber can only perform active dynamic vibration absorption for a single degree of freedom. Active dynamic vibration absorption with two degrees of freedom is realized, and at the same time, the stiffness adjustment of two degrees of freedom is completed by only one active component, thereby achieving the adjustment of vibration absorption frequency, reducing the weight of the vibration absorber and simplifying the control process.
本发明在动力吸振方面采用了传统的钢板弹簧与螺旋弹簧金属橡胶组合，并使用伺服电机、减速器与滚珠丝杠进行主动控制，它具有以下几个优点：The present invention adopts the traditional combination of leaf spring and coil spring metal rubber in terms of dynamic vibration absorption, and uses servo motor, reducer and ball screw for active control, and has the following advantages:
采用主动控制技术，通过控制两个方向动力吸振结构的刚度来改变动力吸振器的吸振频率，相较于传统被动式动力吸振器，其吸振频率范围得到提升，应用范围更广。Using active control technology, the vibration absorption frequency of the dynamic vibration absorber is changed by controlling the stiffness of the dynamic vibration absorption structure in two directions. Compared with the traditional passive dynamic vibration absorber, the vibration absorption frequency range is improved and the application range is wider.
采用一个质量块，通过特殊结构连接使得质量块具有两个方向的自由度，具有两个方向的动力吸振能力。相较于传统的单向主动动力吸振器，该发明具有两个方向的主动动力吸振能力，具有更好的吸振效果。A mass block is used, which is connected by a special structure, so that the mass block has two degrees of freedom, and has the ability to absorb dynamic vibrations in two directions. Compared with the traditional one-way active dynamic vibration absorber, the invention has two-direction active dynamic vibration absorption capability, and has better vibration absorption effect.
采用特殊结构，使得仅需要通过一个驱动装置就能控制两个方向的刚度变化，相较于传统的主动控制系统每个方向的控制都需要一个独立的驱动装置，该装置可以简化主动控制结构，减少吸振器质量与体积，可在更多有限制的环境中工作。Using a special structure, the stiffness changes in two directions can be controlled by only one driving device. Compared with the traditional active control system, each direction control requires an independent driving device. This device can simplify the active control structure. Reduced absorber mass and volume to work in more restricted environments.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110888255.6A CN113503417B (en) | 2021-08-03 | 2021-08-03 | Two-degree-of-freedom pipeline active dynamic vibration absorber and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110888255.6A CN113503417B (en) | 2021-08-03 | 2021-08-03 | Two-degree-of-freedom pipeline active dynamic vibration absorber and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113503417A CN113503417A (en) | 2021-10-15 |
| CN113503417B true CN113503417B (en) | 2022-05-10 |
Family
ID=78015592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110888255.6A Active CN113503417B (en) | 2021-08-03 | 2021-08-03 | Two-degree-of-freedom pipeline active dynamic vibration absorber and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113503417B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983272B (en) * | 2021-10-29 | 2023-09-29 | 福州大学 | Frequency-adjustable negative-stiffness pipeline dynamic vibration absorber and working method thereof |
| CN114033832B (en) * | 2021-11-05 | 2023-03-28 | 兰州理工大学 | Two-dimensional integrated semi-active vibration control device based on impact vibration reduction |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494071B (en) * | 2011-11-15 | 2013-12-11 | 江苏大学 | Passive vibration isolation system for dampers of ceilings and sheds |
| KR20180028722A (en) * | 2016-09-09 | 2018-03-19 | 김병찬 | Pipe supporting tool for earthquake-proof construction |
| CN208397189U (en) * | 2017-10-09 | 2019-01-18 | 广东技术师范学院 | A kind of high-precision dynamic vibration absorber |
| CN108547913B (en) * | 2018-05-14 | 2019-08-23 | 东北大学 | A kind of rotor-support-foundation system dynamic vibration absorber with varying stiffness member |
| CN108716521B (en) * | 2018-06-01 | 2020-08-25 | 中国人民解放军海军工程大学 | Vibration energy collecting device based on nonlinear energy trap |
| CN109374521B (en) * | 2018-11-24 | 2024-04-16 | 福州大学 | Device for testing friction energy consumption performance of metal rubber and working method thereof |
-
2021
- 2021-08-03 CN CN202110888255.6A patent/CN113503417B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113503417A (en) | 2021-10-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113503417B (en) | Two-degree-of-freedom pipeline active dynamic vibration absorber and using method thereof | |
| CN111021571B (en) | A semi-active positive and negative stiffness parallel self-coordinated vibration damping device | |
| CN106257123B (en) | A kind of magnetorheological pipeline dual dynamic damping absorber | |
| CN101994775A (en) | Composite damping single-piston rod viscous damper | |
| CN105927708B (en) | A kind of adjustable rigidity and the supporting of the active damping of damping | |
| CN103047363A (en) | Active vibration isolation device with adjustable rigidity and damping | |
| CN205136453U (en) | Variably be used to dual circuit liquid of matter coefficient and be used to container | |
| CN106989129A (en) | A kind of big displacement eddy current damper | |
| JP4682086B2 (en) | MR fluid valve | |
| CN112593868A (en) | Petroleum drill string shock absorber | |
| CN105378342A (en) | Ball screw | |
| CN111911576A (en) | Quasi-zero stiffness vibration isolator with cantilever leaf springs | |
| CN106257088B (en) | A kind of magnetorheological pipeline bump leveller | |
| CN111878537A (en) | Adaptive Dampers and Damper-Based Devices | |
| CN212455929U (en) | A vibration absorber device for active vibration reduction of pipelines | |
| CN201818704U (en) | A single-rod viscous damper with composite damping | |
| CN212376380U (en) | A damping-adjustable magnetorheological damper energy trap device | |
| CN105735507A (en) | Tension-compression type magnetic shape memory alloy multi-mode intelligent damper | |
| CN1969140A (en) | Device for damping torsional excitation of drive shafts | |
| CN113983108B (en) | A magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap | |
| CN218914207U (en) | Self-adaptive pipeline robot structure based on spring pre-tightening | |
| CN210141197U (en) | Mute shock absorption chemical corrosion resistance type spiral vacuum pump equipment | |
| CN104475198B (en) | Film-type hydraulic vibration single-drum vibration mill | |
| CN111486293B (en) | A vibration absorber device for active vibration reduction of pipeline | |
| CN1322250C (en) | Controllable damper with viscosity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |