CN108488297A - A kind of hydro-pneumatic spring - Google Patents
A kind of hydro-pneumatic spring Download PDFInfo
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- CN108488297A CN108488297A CN201810320289.3A CN201810320289A CN108488297A CN 108488297 A CN108488297 A CN 108488297A CN 201810320289 A CN201810320289 A CN 201810320289A CN 108488297 A CN108488297 A CN 108488297A
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- 239000003921 oil Substances 0.000 claims abstract description 72
- 238000013016 damping Methods 0.000 claims abstract description 17
- 238000007667 floating Methods 0.000 claims abstract description 11
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000872 buffer Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
本发明公开了一种油气弹簧，包括液压缸、主活塞；所液压缸内设有填充有液压油的柱形油腔，所述主活塞活动安装于该液压缸，并将该液压缸分隔为主油腔和环形油腔两部分，且主油腔和环形油腔通过阻尼孔相连通；所述主活塞的内部设有柱形空腔，该柱形空腔通过一浮动活塞分隔为活塞气腔和活塞油腔，所述活塞油腔与所述主油腔相连通。本发明提供了一种优化缓冲结构的油气弹簧，改进了缓冲结构，简化了油气弹簧系统的结构布置，有利于系统的紧凑结构设计。
The invention discloses an oil-gas spring, which comprises a hydraulic cylinder and a main piston; the hydraulic cylinder is provided with a cylindrical oil chamber filled with hydraulic oil, the main piston is movably installed on the hydraulic cylinder, and the hydraulic cylinder is divided into There are two parts, the main oil chamber and the annular oil chamber, and the main oil chamber and the annular oil chamber are connected through a damping hole; the inside of the main piston is provided with a cylindrical cavity, which is separated into a piston gas by a floating piston. chamber and piston oil chamber, the piston oil chamber communicates with the main oil chamber. The invention provides an oil-pneumatic spring with an optimized buffer structure, which improves the buffer structure, simplifies the structural arrangement of the oil-pneumatic spring system, and is beneficial to the compact structure design of the system.
Description
技术领域technical field
本发明涉及阻尼器系统技术领域，特别是涉及一种优化缓冲结构的油气弹簧。The invention relates to the technical field of damper systems, in particular to an oil-pneumatic spring with an optimized buffer structure.
背景技术Background technique
油气弹簧是一种利用油压阻尼实现缓冲的机械组件，广泛应用于车辆的悬架系统中。油气弹簧作为悬架系统中提供承载能力和阻尼减震的重要元件，油气弹簧的设计一直是悬架系统设计的重点。The oil-pneumatic spring is a mechanical component that uses oil pressure damping to achieve buffering, and is widely used in the suspension system of vehicles. The oil-pneumatic spring is an important element in the suspension system to provide bearing capacity and damping. The design of the oil-pneumatic spring has always been the focus of the suspension system design.
油气弹簧以液压油传递压力，以惰性气体作为弹性介质，内部的节流口、单向阀等代替了通常的减震器元件，使油气弹簧集弹性元件和减震器功能于一体，径向尺寸小，对整车的布置有利。同时油气弹簧具有非线性刚度特性和非线性阻尼特性，既能提高车辆在一般路面上的形式平顺性，又能在大起伏路面上提供较大的刚度，保持车辆的驾驶姿态。The oil-gas spring uses hydraulic oil to transmit pressure, uses inert gas as the elastic medium, and the internal throttle, check valve, etc. replace the usual shock absorber components, so that the oil-gas spring integrates the functions of the elastic element and the shock absorber, and the radial The small size is beneficial to the layout of the whole vehicle. At the same time, the oil-pneumatic spring has nonlinear stiffness characteristics and nonlinear damping characteristics, which can not only improve the ride comfort of the vehicle on general road surfaces, but also provide greater stiffness on large undulating road surfaces to maintain the driving posture of the vehicle.
但是，由于传统油气弹簧大多采用的是气体储能器外挂的方式，这种布置结构会增加较多的附属部件，包括气囊，连接管道等，这种结构结成度低，不利于结构紧凑型设计；同时对各部件之间的密封性能要求比较高，导致系统的制造成本比较高。However, because most of the traditional oil-gas springs use the external gas accumulator, this arrangement will increase more accessory parts, including airbags, connecting pipes, etc. This structure has a low degree of integration and is not conducive to compact structures. Design; at the same time, the sealing performance requirements between various components are relatively high, resulting in relatively high manufacturing costs of the system.
发明内容Contents of the invention
本发明的目的在于克服现有技术之不足，提供了一种优化缓冲结构的油气弹簧，改进了缓冲结构，简化了油气弹簧系统的结构布置，有利于系统的紧凑结构设计。The purpose of the present invention is to overcome the shortcomings of the prior art, provide an oil-pneumatic spring with an optimized buffer structure, improve the buffer structure, simplify the structural arrangement of the oil-pneumatic spring system, and facilitate the compact structure design of the system.
本发明解决其技术问题所采用的技术方案是：The technical solution adopted by the present invention to solve its technical problems is:
一种油气弹簧，包括液压缸、主活塞；所液压缸内设有填充有液压油的柱形油腔，所述主活塞活动安装于该液压缸，并将该液压缸分隔为主油腔和环形油腔两部分，且主油腔和环形油腔通过阻尼孔相连通；所述主活塞的内部设有柱形空腔，该柱形空腔通过一浮动活塞分隔为活塞气腔和活塞油腔，所述活塞油腔与所述主油腔相连通。An oil-pneumatic spring, including a hydraulic cylinder and a main piston; the hydraulic cylinder is provided with a cylindrical oil chamber filled with hydraulic oil, the main piston is movably installed on the hydraulic cylinder, and the hydraulic cylinder is divided into the main oil chamber and the There are two parts of the annular oil chamber, and the main oil chamber and the annular oil chamber are connected through a damping hole; the inside of the main piston is provided with a cylindrical cavity, which is separated into a piston air chamber and a piston oil chamber by a floating piston. chamber, the piston oil chamber communicates with the main oil chamber.
作为一种优选，所述主活塞设有沿主油腔向环形油腔单向导通的单向阀。As a preference, the main piston is provided with a one-way valve for one-way communication from the main oil chamber to the annular oil chamber.
作为一种优选，所述活塞气腔、环形油腔和主油腔分别设有压力传感器。As a preference, the piston air chamber, the annular oil chamber and the main oil chamber are respectively provided with pressure sensors.
作为一种优选，所述柱形空腔设有用于定位的凸缘台阶，所述浮动活塞的最低运动位置通过该凸缘台阶进行限位。As a preference, the cylindrical cavity is provided with a flange step for positioning, and the lowest moving position of the floating piston is limited by the flange step.
作为一种优选，所述主活塞设有节流孔，所述活塞油腔和所述主油腔通过该节流孔相连接。As a preference, the main piston is provided with a throttling hole, and the piston oil chamber and the main oil chamber are connected through the throttling hole.
作为一种优选，所述气腔填充高压氮气。As a preference, the air cavity is filled with high-pressure nitrogen.
作为一种优选，所述液压缸的底部设有下安装法兰盘，所述活塞杆的顶部设有上安装法兰盘。As a preference, the bottom of the hydraulic cylinder is provided with a lower mounting flange, and the top of the piston rod is provided with an upper mounting flange.
作为一种优选，所述液压缸的封口处设有密封导向机构。As a preference, a seal guide mechanism is provided at the seal of the hydraulic cylinder.
本发明的有益效果是：The beneficial effects of the present invention are:
1、将传统的油气悬挂中的实心活塞杆设计成为柱形空腔，并使该柱形空腔与主油腔连通，相比于传统的外置蓄能器式油气弹簧，将气腔嵌入油气弹簧活塞杆腔中，减少了腔室的数量及外部附加部件，简化了油气弹簧系统的结构布置，有利于系统的紧凑结构设计。1. The solid piston rod in the traditional oil-air suspension is designed as a cylindrical cavity, and the cylindrical cavity is connected with the main oil chamber. Compared with the traditional external accumulator-type oil-gas spring, the air cavity is embedded In the piston rod chamber of the oil-gas spring, the number of chambers and external additional parts are reduced, the structural arrangement of the oil-gas spring system is simplified, and it is beneficial to the compact structure design of the system.
2、主活塞集成化设计，油气弹簧主活塞上设置有单向阀和节流孔，提供了非线性阻尼特性，实现减震器效果；同时主活塞上设计有凸缘台阶，限制浮动活塞不脱离空心活塞杆运动，保证气腔的初始充气体积。2. The integrated design of the main piston, the main piston of the oil-gas spring is equipped with a check valve and a throttle hole, which provides nonlinear damping characteristics and realizes the shock absorber effect; at the same time, a flange step is designed on the main piston to limit the floating piston. The movement away from the hollow piston rod ensures the initial inflated volume of the air cavity.
3、由于各个腔室的工作瞬时压力都可以通过外部的压力传感器监测，为实现悬架主动控制提供的数据支持。3. Since the working instantaneous pressure of each chamber can be monitored by an external pressure sensor, it provides data support for the active control of the suspension.
以下结合附图及实施例对本发明作进一步详细说明；但本发明的一种油气弹簧不局限于实施例。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, an oil-pneumatic spring of the present invention is not limited to the embodiments.
附图说明Description of drawings
图1是本发明的整体结构示意图；Fig. 1 is the overall structural representation of the present invention;
图2是本发明的主活塞的侧视图；Fig. 2 is a side view of the main piston of the present invention;
图3是本发明的主活塞的端面图。Fig. 3 is an end view of the main piston of the present invention.
具体实施方式Detailed ways
实施例：Example:
参见图1所示，本发明的一种油气弹簧，包括液压缸13、主活塞7；所液压缸13内设有填充有液压油的柱形油腔，所述主活塞7活动安装于该液压缸13，并将该液压缸13分隔为主油腔33和环形油腔22两部分，且主油腔33和环形油腔22通过阻尼孔相连通；所述主活塞7的内部设有柱形空腔，该柱形空腔通过一浮动活塞8分隔为活塞气腔11和活塞油腔，所述活塞油腔与所述主油腔33相连通。Referring to Fig. 1, a kind of oil-pneumatic spring of the present invention comprises a hydraulic cylinder 13 and a main piston 7; the hydraulic cylinder 13 is provided with a cylindrical oil chamber filled with hydraulic oil, and the main piston 7 is movably mounted on the hydraulic pressure Cylinder 13, and the hydraulic cylinder 13 is divided into two parts, the main oil chamber 33 and the annular oil chamber 22, and the main oil chamber 33 and the annular oil chamber 22 are connected through a damping hole; the inside of the main piston 7 is provided with a cylindrical Cavity, the cylindrical cavity is divided into a piston air chamber 11 and a piston oil chamber by a floating piston 8, and the piston oil chamber communicates with the main oil chamber 33.
所述主活塞7设有沿主油腔33向环形油腔22单向导通的单向阀4。所述活塞气腔11、环形油腔22和主油腔33分别设有压力传感器6。所述柱形空腔设有用于定位的凸缘台阶14，所述浮动活塞8的最低运动位置通过该凸缘台阶14进行限位。The main piston 7 is provided with a one-way valve 4 that is unidirectionally connected from the main oil chamber 33 to the annular oil chamber 22 . The piston air chamber 11 , the annular oil chamber 22 and the main oil chamber 33 are respectively provided with pressure sensors 6 . The cylindrical cavity is provided with a flange step 14 for positioning, and the lowest moving position of the floating piston 8 is limited by the flange step 14 .
所述主活塞7设有节流孔9，所述活塞油腔和所述主油腔33通过该节流孔9相连接。所述气腔11填充高压氮气。所述液压缸13的底部设有下安装法兰盘12。所述主活塞7的顶部设有上安装法兰盘11。The main piston 7 is provided with a throttling hole 9 , and the piston oil chamber and the main oil chamber 33 are connected through the throttling hole 9 . The air chamber 11 is filled with high-pressure nitrogen. The bottom of the hydraulic cylinder 13 is provided with a lower mounting flange 12 . The top of the main piston 7 is provided with an upper mounting flange 11 .
各组成部件的相互连接关系如下：The interconnection of each component is as follows:
液压缸13主油腔3与环形油腔2通过节流孔9和单向阀4组成的阻尼阀系连通；空心主活塞7内腔被浮动活塞8分割成油腔和气腔1，同时油腔与主油腔3直接连通。因此，整个油气弹簧系统被主活塞7和浮动活塞8分隔成三个腔室，与传统的油气弹簧相比，其腔室数量较少，降低了油气弹簧的结构复杂性。The main oil chamber 3 of the hydraulic cylinder 13 communicates with the annular oil chamber 2 through the damping valve system composed of the throttle hole 9 and the one-way valve 4; the hollow main piston 7 is divided into the oil chamber and the air chamber 1 by the floating piston 8, and the oil chamber It communicates directly with the main oil chamber 3. Therefore, the entire oil-pneumatic spring system is divided into three chambers by the main piston 7 and the floating piston 8. Compared with the traditional oil-pneumatic spring, the number of chambers is less, which reduces the structural complexity of the oil-pneumatic spring.
本发明的具体工作原理如下：Concrete working principle of the present invention is as follows:
车辆在行驶的过程中，随着路面的起伏车身也会随着上下运动。当主活塞7和主活塞7相对液压缸13收缩时，主油腔3减少的油液体积体积大于环形油腔2增大的体积，故油液通过挤压浮动活塞8压缩气腔1中的气体，此时单向阀4开启，主活塞7和主活塞7组件相对工作液压缸13运动时受到的阻尼力较小，这相当于传统悬架中的弹簧的作用；当活塞缸相对液压缸13拉伸的时候，主油腔3增大的体积大于环形油腔2减少的体积，故气腔1容积复原，油液流回主油腔3，此时单向阀4关闭，主活塞7及活塞组件相对缸筒运动时受到的阻尼力较大，这相当于传统悬架中的减震器作用。通过单向阀4的作用，悬挂在压缩和拉伸行程中产生不对称的阻尼力，更好的缓解车身的振动，提高车辆在行驶中的平稳性。在压缩和拉伸过程中的各个腔室的工作瞬时压强都可以通过外部的压力传感器6监测。When the vehicle is running, the body will also move up and down with the undulations of the road surface. When the main piston 7 and the main piston 7 shrink relative to the hydraulic cylinder 13, the volume of the oil in the main oil chamber 3 decreases more than the volume of the annular oil chamber 2 increases, so the oil compresses the gas in the air chamber 1 by squeezing the floating piston 8 , the one-way valve 4 is opened at this time, and the damping force received by the main piston 7 and the main piston 7 assembly relative to the working hydraulic cylinder 13 is relatively small, which is equivalent to the effect of the spring in the traditional suspension; when the piston cylinder moves relative to the hydraulic cylinder 13 When stretching, the increased volume of the main oil chamber 3 is greater than the reduced volume of the annular oil chamber 2, so the volume of the air chamber 1 is restored, and the oil flows back to the main oil chamber 3. At this time, the check valve 4 is closed, and the main piston 7 and When the piston assembly moves relative to the cylinder, the damping force is relatively large, which is equivalent to the shock absorber function in the traditional suspension. Through the function of the one-way valve 4, the suspension generates asymmetrical damping force during the compression and tension strokes, which can better alleviate the vibration of the vehicle body and improve the stability of the vehicle during driving. The working instantaneous pressure of each chamber in the process of compression and stretching can be monitored by the external pressure sensor 6 .
本发明的具体控制过程如下：Concrete control process of the present invention is as follows:
当车辆行驶时,路面起伏引起主活塞7和主活塞7在缸筒内上、下运动,这样,使主油腔3和环形油腔2的油液在压差的作用下往复地通过主活塞7上的阻尼孔和单向阀4孔,具有压差的油液流过阻尼孔和单向阀4孔时消耗能量,衰减汽车的振动,这一过程就形成了油气悬挂系统的阻尼特性。而气腔1中充满密封的高压氮气,通过高压氮气的压缩产生的弹性力来承受载荷,缓冲地面对车辆的冲击,这一过程就形成了油气悬挂系统的弹性特性。When the vehicle is running, the undulation of the road surface causes the main piston 7 and the main piston 7 to move up and down in the cylinder, so that the oil in the main oil chamber 3 and the annular oil chamber 2 reciprocates through the main piston under the action of the pressure difference. The damping hole on the 7 and the check valve 4 hole, when the oil with pressure difference flows through the damping hole and the check valve 4 hole consumes energy and attenuates the vibration of the car, this process forms the damping characteristics of the oil-air suspension system. The air cavity 1 is filled with sealed high-pressure nitrogen, and the elastic force generated by the compression of the high-pressure nitrogen bears the load and buffers the impact of the ground on the vehicle. This process forms the elastic characteristics of the oil-air suspension system.
综上所述，本发明的设计重点在于：In summary, the design focus of the present invention is:
本发明的一种油气弹簧，通过改变传统主活塞7的内部空间，省去传统油气悬挂的外置的储能器，在实现传统油气弹簧的基本功能基础上，减少了腔室的数量，使得系统结构更加的简化和紧凑。通过油腔中油液在压差的作用下往复通过阻尼孔和单向阀4产生不同的阻尼力衰减汽车的振动，另一方面内置的气腔1中充满高压氮气，在悬挂的上下运动中通过氮气的弹性变形来承受载荷，缓解冲击。通过优化油气弹簧系统油液和气体的连通关系，减少系统腔室的数量，不仅简化了油气弹簧系统的结构，同时各个腔室的工作瞬时压力都可以通过外部的压力传感器6监测，为悬架实现主动控制提供数据支持。A kind of oil-pneumatic spring of the present invention, by changing the internal space of traditional main piston 7, saves the external accumulator of traditional oil-pneumatic suspension, on the basis of realizing the basic function of traditional oil-pneumatic spring, reduces the quantity of chamber, makes The system structure is more simplified and compact. The oil in the oil chamber reciprocates through the damping hole and the one-way valve 4 under the action of the pressure difference to produce different damping forces to attenuate the vibration of the car. Nitrogen elastically deforms to withstand loads and cushion shocks. By optimizing the connection relationship between oil and gas in the oil-gas spring system and reducing the number of system chambers, it not only simplifies the structure of the oil-gas spring system, but at the same time the working instantaneous pressure of each chamber can be monitored by the external pressure sensor 6. Realize active control and provide data support.
上述实施例仅用来进一步说明本发明的一种油气弹簧，但本发明并不局限于实施例，凡是依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均落入本发明技术方案的保护范围内。The foregoing embodiments are only used to further illustrate a kind of oil-gas spring of the present invention, but the present invention is not limited to the embodiments, and any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention shall fall within the scope of the present invention. Into the protection scope of the technical solution of the present invention.
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