CN105909723A - Anti-collapse multi-layer metal corrugated pipe solid-liquid mixed vibration isolator - Google Patents
Anti-collapse multi-layer metal corrugated pipe solid-liquid mixed vibration isolator Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 17
- 239000002184 metal Substances 0.000 title claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000011084 recovery Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 14
- 239000000956 alloy Substances 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000032683 aging Effects 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
- F16F15/023—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 fluid means
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- 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
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- 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
- F16F2222/12—Fluid damping
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Abstract
本发明涉及一种抗倒塌多层金属波纹管固液混合隔振器，包括波纹管容器、液压油、可压缩弹性橡胶单元和圆形补片。其中波纹管容器内装有由液压油和可压缩性弹性橡胶单元组成的固液混合介质，其中可压缩性弹性橡胶单元体内可填充空气、加压气体或为真空，波纹管容器顶底两端焊接圆形补片进行密封。本发明具有良好的隔振性能，能有效提升结构的抗倒塌能力。通过改变可压缩弹性橡胶单元体的数量可以调整隔振效果，同时多层波纹管的采用，避免了油料泄露的问题，波纹管的合金材质具有耐油性、耐腐蚀性、耐热性和不易老化等多种优点。
The invention relates to an anti-collapse multi-layer metal bellows solid-liquid mixing vibration isolator, which comprises a bellows container, hydraulic oil, a compressible elastic rubber unit and a circular patch. Among them, the bellows container is equipped with a solid-liquid mixed medium composed of hydraulic oil and compressible elastic rubber unit, wherein the compressible elastic rubber unit can be filled with air, pressurized gas or vacuum, and the top and bottom ends of the bellows container are welded Round patch for sealing. The invention has good vibration isolation performance and can effectively improve the collapse resistance of the structure. The vibration isolation effect can be adjusted by changing the number of compressible elastic rubber units. At the same time, the use of multi-layer bellows avoids the problem of oil leakage. The alloy material of the bellows has oil resistance, corrosion resistance, heat resistance and is not easy to age. And many other advantages.
Description
技术领域technical field
本发明涉及一种抗倒塌多层金属波纹管固液混合隔振器，属于液压式隔振、抗倒塌技术领域。The invention relates to an anti-collapse multilayer metal bellows solid-liquid mixing vibration isolator, which belongs to the technical field of hydraulic vibration isolation and anti-collapse.
背景技术Background technique
振动控制技术主要分为被动控制、半主动控制及主动控制三类。在实际工程中，与其他两种方案相比，被动控制因其操作简洁便利、代价低等优点被广泛研究和应用。Vibration control technology is mainly divided into three categories: passive control, semi-active control and active control. In actual engineering, compared with the other two schemes, passive control has been widely studied and applied because of its advantages of simplicity, convenience and low cost.
近年来，液固混合介质隔振器作为一种全新的振动控制手段也得到了一定的关注，尤其在低频重载隔振方面有着明显优势。传统液固混合隔振器由液压油缸、液压油、弹性单元及活塞等组成，具有良好的隔振性能，然而也存在疲劳寿命短、单元老化、油液泄露等问题。为解决这些问题，本发明引入了合金波纹管结构，合金材料明显不存在老化的问题，并且具有更长的疲劳寿命。油液泄露问题通过波纹管容器顶底两端焊接密封来解决。波纹管单元体的两侧焊接有圆形补片，可压缩弹性橡胶单元体内可填充空气、加压气体、或者为真空。In recent years, the liquid-solid mixed medium vibration isolator has also received some attention as a new vibration control method, especially in low-frequency heavy-load vibration isolation, which has obvious advantages. The traditional liquid-solid hybrid vibration isolator is composed of hydraulic cylinder, hydraulic oil, elastic unit and piston, etc. It has good vibration isolation performance, but there are also problems such as short fatigue life, unit aging, and oil leakage. In order to solve these problems, the present invention introduces an alloy bellows structure, the alloy material obviously does not have the problem of aging, and has a longer fatigue life. The problem of oil leakage is solved by welding and sealing the top and bottom ends of the bellows container. Circular patches are welded on both sides of the bellows unit body, and the compressible elastic rubber unit body can be filled with air, pressurized gas, or vacuum.
本发明具有良好的隔振性能，可有效提升结构的抗倒塌能力，通过改变可压缩弹性橡胶单元体的数量可以调整隔振效果，同时多层波纹管的采用，避免了油料泄露的问题，波纹管的合金材质具有耐油性、耐腐蚀性、耐热性和不易老化等多种优点。The invention has good vibration isolation performance and can effectively improve the collapse resistance of the structure. The vibration isolation effect can be adjusted by changing the number of compressible elastic rubber units. At the same time, the use of multi-layer bellows avoids the problem of oil leakage The alloy material of the tube has many advantages such as oil resistance, corrosion resistance, heat resistance and aging resistance.
发明内容Contents of the invention
为了克服现有隔振器存在的疲劳寿命短、单元老化、油液泄露等问题，本发明的目的在于提供一种多层金属波纹管式固液混合隔振器，该装置在传统液固隔振器的基础上加以改进，引入了合金波纹管结构，波纹管容器顶底两端焊接圆形补片密封来解决油液泄漏的问题。本隔振器具有传统隔振器隔振性能良好的优点，同时解决了传统隔振器疲劳寿命短、橡胶单元老化、油液泄露等问题，并提升结构的抗倒塌能力。In order to overcome the problems of short fatigue life, unit aging and oil leakage in the existing vibration isolators, the purpose of the present invention is to provide a multi-layer metal bellows type solid-liquid mixing On the basis of the vibrator, the alloy bellows structure is introduced, and the top and bottom ends of the bellows container are welded with circular patch seals to solve the problem of oil leakage. This vibration isolator has the advantages of good vibration isolation performance of traditional vibration isolators, and at the same time solves the problems of short fatigue life of traditional vibration isolators, rubber unit aging, oil leakage, etc., and improves the collapse resistance of the structure.
本发明解决其技术问题所采用的技术方案是：抗倒塌多层金属波纹管固液混合隔振器，包括波纹管容器、液压油、可压缩弹性橡胶单元和圆形补片，波纹管容器内装有由液压油和可压缩性弹性橡胶单元组成的固液混合介质，所述固液混合介质充满整个波纹管容器，可压缩性弹性橡胶单元体内填充空气、加压气体或真空中任一种，波纹管容器顶部和底部两端焊接圆形补片，使波纹管容器完全密封；所述混合隔振器刚度分为线性段和非线性段，开始时，刚度由波纹管容器和可压缩橡胶单元体共同提供，当达到临界点后，混合隔振器的刚度全部由多层波纹管容器提供，所述临界点为可压缩橡胶单元体自身的弹性恢复力与其内部气体压力平衡，故混合隔振器的刚度由波纹管容器和可压缩橡胶单元体共同决定，临界点的位置与可压缩橡胶单元体的性质有关。The technical solution adopted by the present invention to solve the technical problem is: anti-collapse multi-layer metal bellows solid-liquid mixing vibration isolator, including bellows container, hydraulic oil, compressible elastic rubber unit and circular patch, the bellows container is installed There is a solid-liquid mixed medium composed of hydraulic oil and a compressible elastic rubber unit, the solid-liquid mixed medium fills the entire bellows container, and the compressible elastic rubber unit is filled with any one of air, pressurized gas or vacuum, The top and bottom ends of the bellows container are welded with circular patches to make the bellows container completely sealed; the stiffness of the hybrid vibration isolator is divided into a linear segment and a nonlinear segment. At the beginning, the stiffness is determined by the bellows container and the compressible rubber unit When the critical point is reached, the stiffness of the hybrid vibration isolator is all provided by the multi-layer bellows container. The critical point is the balance between the elastic recovery force of the compressible rubber unit itself and its internal gas pressure, so the hybrid vibration isolator The stiffness of the device is jointly determined by the bellows container and the compressible rubber unit, and the position of the critical point is related to the properties of the compressible rubber unit.
本发明中，可压缩性弹性橡胶单元体内填充空气、加压气体或真空，从而实现其可压缩的性能，而液压油几乎不可压缩。In the present invention, the body of the compressible elastic rubber unit is filled with air, pressurized gas or vacuum to realize its compressibility, while the hydraulic oil is almost incompressible.
本发明中，可压缩弹性橡胶单元体的数量可以调整，从而改变隔振器的刚度，调整隔振器的隔振效果，提高其性能。In the present invention, the number of compressible elastic rubber units can be adjusted, thereby changing the stiffness of the vibration isolator, adjusting the vibration isolation effect of the vibration isolator, and improving its performance.
本发明的有益效果是，本发明引入了抗倒塌多层金属波纹管结构，且多层波纹管容器顶底两端焊接圆形补片进行密封，可以避免传统液压油缸油料泄露的问题，合金材料的使用使本发明具有耐油性、耐腐蚀性、耐热性和不易老化等优点。可压缩性弹性橡胶单元体内可填充空气、加压气体或为真空，从而实现其可压缩的性能，而液压油几乎不可压缩。本发明可压缩弹性橡胶单元体的数量可以调整，从而改变隔振器的刚度，调整隔振器的隔振效果，提高其性能，最终使结构的抗倒塌能力得到有效提高。The beneficial effect of the present invention is that the present invention introduces an anti-collapse multi-layer metal bellows structure, and the top and bottom ends of the multi-layer bellows container are welded with circular patches for sealing, which can avoid the problem of oil leakage in traditional hydraulic cylinders. The use of the present invention has the advantages of oil resistance, corrosion resistance, heat resistance and aging resistance. Compressibility Elastomeric rubber units can be filled with air, pressurized gas or a vacuum to achieve their compressible properties, whereas hydraulic oils are nearly incompressible. The quantity of the compressible elastic rubber unit body of the present invention can be adjusted, thereby changing the stiffness of the vibration isolator, adjusting the vibration isolation effect of the vibration isolator, improving its performance, and finally effectively improving the collapse resistance of the structure.
附图说明Description of drawings
图1为本发明示意图；Fig. 1 is a schematic diagram of the present invention;
图2为俯视示意图。Figure 2 is a schematic top view.
图中标号：1.波纹管容器，2. 液压油，3. 可压缩弹性橡胶单元，4. 圆形补片。Labels in the figure: 1. Bellows container, 2. Hydraulic oil, 3. Compressible elastic rubber unit, 4. Circular patch.
具体实施方式detailed description
下面结合附图和实施例对本发明进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
实施例1：Example 1:
本发明的抗倒塌多层金属波纹管固液混合隔振器，包括波纹管容器1、液压油2、可压缩弹性橡胶单元3和圆形补片4。The anti-collapse multilayer metal bellows solid-liquid hybrid vibration isolator of the present invention comprises a bellows container 1 , hydraulic oil 2 , a compressible elastic rubber unit 3 and a circular patch 4 .
如图1、2所示，波纹管容器1内装有由液压油2和可压缩性弹性橡胶单元3组成的固液混合介质，其中可压缩性弹性橡胶单元3体内可填充空气、加压气体或为真空，波纹管容器顶底两端焊接圆形补片进行密封。通过改变可压缩弹性橡胶单元体的数量可以调整隔振器刚度，从而起到调整隔振性能，提高隔振效果的作用，多层波纹管的采用，避免了油料泄露的问题，波纹管的合金材质具有耐油性、耐腐蚀性、耐热性和不易老化等多种优点。As shown in Figures 1 and 2, the bellows container 1 is filled with a solid-liquid mixed medium composed of hydraulic oil 2 and a compressible elastic rubber unit 3, wherein the compressible elastic rubber unit 3 can be filled with air, pressurized gas or For vacuum, the top and bottom ends of the bellows container are welded with circular patches for sealing. The stiffness of the vibration isolator can be adjusted by changing the number of compressible elastic rubber units, so as to adjust the vibration isolation performance and improve the vibration isolation effect. The use of multi-layer bellows avoids the problem of oil leakage. The alloy of the bellows The material has many advantages such as oil resistance, corrosion resistance, heat resistance and aging resistance.
通过理论分析对抗倒塌多层金属波纹管固液混合隔振器的减振效果的影响因素进行研究。这个体系有两种不同的状态：第一种状态，系统的运动方程是线性的；第二种状态，体系的运动会呈现出明显的不光滑的非线性。Through theoretical analysis, the influence factors of the anti-collapse multi-layer metal bellows solid-liquid mixture vibration isolator are studied. This system has two different states: in the first state, the motion equation of the system is linear; in the second state, the motion of the system will show obvious non-smooth nonlinearity.
第一种状态时，体系处于静力平衡状态，受到集中作用力F，标准大气压力Pa，内部油压力p0，故体系力平衡方程为In the first state, the system is in a state of static force equilibrium, and is subjected to concentrated force F, standard atmospheric pressure P a , and internal oil pressure p 0 , so the force balance equation of the system is
(1) (1)
此处x是隔振器的轴向变形，k2代表波纹管容器的刚度，Se代表容器的有效面积，由其结构几何尺寸决定。Here x is the axial deformation of the vibration isolator, k2 represents the stiffness of the bellows container, and Se represents the effective area of the container, which is determined by its structural geometry.
假设液压油液不可压缩，波纹管结构径向刚度足够大，不考虑径向变形，波纹管容器体积变化将全部由弹性单元体变形所致。假设所有的弹性单元完全屈服。所以有如下关系：Assuming that the hydraulic oil is incompressible and the radial stiffness of the bellows structure is large enough, regardless of the radial deformation, the volume change of the bellows container will be entirely caused by the deformation of the elastic unit body. All elastic elements are assumed to yield completely. So there is the following relationship:
(2) (2)
由(1)(2)式整理得：According to formula (1) (2):
(3) (3)
其中，是弹性单元在外部液压作用下的轴向刚度，近似认为k0为常数。in, is the axial stiffness of the elastic unit under external hydraulic pressure, and k 0 is approximately considered as a constant.
公式(3)表明：刚度和阻尼是影响隔振器性能的主要因素，且本隔振器可以通过改变单元体的数量来调整隔振器的刚度。也就是说，可以通过改变弹性单元体的数量改变固液混合介质隔振器的性能。理论上，刚度越小，隔振器的性能越好。Formula (3) shows that stiffness and damping are the main factors affecting the performance of the vibration isolator, and the vibration isolator can adjust the stiffness of the vibration isolator by changing the number of unit cells. That is to say, the performance of the solid-liquid mixed medium vibration isolator can be changed by changing the number of elastic units. Theoretically, the smaller the stiffness, the better the performance of the isolator.
通过试验研究发现，该固液混合隔振器能有效阻隔结构的地震输入，阻隔率大概在50%以上，输入结构的地震作用大大减小，可有效提高结构的抗倒塌能力。Through experimental research, it is found that the solid-liquid hybrid vibration isolator can effectively block the seismic input of the structure, the isolation rate is about 50%, the seismic action of the input structure is greatly reduced, and the collapse resistance of the structure can be effectively improved.
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| CN106617148A (en) * | 2016-09-25 | 2017-05-10 | 吉首大学 | Automatic hoisting and feeding taper-drum-type electric-cabinet shock-absorbing walnut flesh separating machine |
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| CN110259871A (en) * | 2019-01-23 | 2019-09-20 | 北京市劳动保护科学研究所 | A kind of half active magnetorheological fluid consolidates hybrid isolator |
| CN110307282A (en) * | 2019-06-24 | 2019-10-08 | 南京航空航天大学 | Pneumatic quasi-zero nonlinear vibration isolation device |
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| CN106418563A (en) * | 2016-09-25 | 2017-02-22 | 吉首大学 | Lift-feeding taper drum type electric control box damping walnut pulp remover with air drafting function |
| CN106617149A (en) * | 2016-09-26 | 2017-05-10 | 吉首大学 | Screw conveying tapered rotary drum type computer-monitored fed walnut pulp removing package machine |
| CN106343586A (en) * | 2016-09-26 | 2017-01-25 | 吉首大学 | Screw conveying taper drum type damping walnut husk removal machine provided with electric control cabinet |
| CN106418566A (en) * | 2016-09-26 | 2017-02-22 | 吉首大学 | Shock-absorption walnut flesh remover with air draft function and drum-type electric control cabinet, capable of increasing feeding conicity |
| CN106108053A (en) * | 2016-09-27 | 2016-11-16 | 吉首大学 | Slide carriage belt conveying tapering rotary drum electric cabinet damping Semen Juglandis takes off outer sarcocarp machine |
| CN106418574A (en) * | 2016-09-28 | 2017-02-22 | 吉首大学 | Taper-rotary-drum-type computer-monitored-feeding walnut external sarcocarp washing, drying and packaging machine |
| CN106343587A (en) * | 2016-09-28 | 2017-01-25 | 吉首大学 | Screw conveying taper drum type walnut husk washing and packaging machine adopting computer for monitoring feeding |
| CN106136257A (en) * | 2016-09-28 | 2016-11-23 | 吉首大学 | Tapering rotary drum electric cabinet damping Semen Juglandis with fresh-keeping immersion treatment washes outer sarcocarp machine |
| CN108223669A (en) * | 2016-12-21 | 2018-06-29 | 罗伯特·博世有限公司 | Vibration absorber and the gas ejector with vibration absorber |
| CN110259871A (en) * | 2019-01-23 | 2019-09-20 | 北京市劳动保护科学研究所 | A kind of half active magnetorheological fluid consolidates hybrid isolator |
| CN110307282A (en) * | 2019-06-24 | 2019-10-08 | 南京航空航天大学 | Pneumatic quasi-zero nonlinear vibration isolation device |
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