技术领域technical field
本发明涉及一种用于机动车座椅的多自由度并联机构减振平台，属于机械减振装置技术领域。The invention relates to a multi-degree-of-freedom parallel mechanism vibration damping platform used for motor vehicle seats, and belongs to the technical field of mechanical vibration damping devices.
背景技术Background technique
随着科技的不断发展，人类对机动车辆的依赖程度日益增加，对机动车辆的舒适性要求也越来越高，重型车辆、客车、商务车辆等在路况较差条件下行驶产生的振动问题严重影响驾乘人员的舒适度，且易疲劳。现有机动车的减振技术主要有：使用海绵垫来进行减振，通过安装竖直方向的座椅、弹簧、阻尼器减缓座椅的振动，该技术的主要减振方向为竖直方向，而车辆产生的振源是多方向的，减振效果相对较差，且纯机械结构的多方向减振实现方式复杂，难以满足实现有限空间内的多方向减振。With the continuous development of science and technology, human beings are increasingly dependent on motor vehicles, and the requirements for the comfort of motor vehicles are also getting higher and higher. Heavy vehicles, passenger cars, commercial vehicles, etc. have serious vibration problems when driving under poor road conditions. Affect the comfort of drivers and passengers, and easy to fatigue. The vibration reduction technologies of existing motor vehicles mainly include: use sponge pads for vibration reduction, and slow down the vibration of seats by installing vertical seats, springs, and dampers. The main vibration reduction direction of this technology is the vertical direction, while The vibration source generated by the vehicle is multi-directional, and the vibration reduction effect is relatively poor, and the multi-directional vibration reduction of purely mechanical structures is complicated to achieve multi-directional vibration reduction in a limited space.
发明内容Contents of the invention
根据以上现有技术中的不足，本发明要解决的技术问题是：提供一种用于机动车座椅的多自由度并联机构减振平台，可实现空间多自由度的座椅减振，减轻外界振动对驾乘人员的影响，提高舒适性和安全性。According to the deficiencies in the prior art above, the technical problem to be solved by the present invention is: to provide a multi-degree-of-freedom parallel mechanism vibration-damping platform for motor vehicle seats, which can realize seat vibration-damping with multiple degrees of freedom in space, reduce The impact of external vibration on the driver and passengers can be improved to improve comfort and safety.
本发明所述的用于机动车座椅的多自由度并联机构减振平台，包括固定平台和固定平台上方的承载平台，承载平台上连接机动车座椅，承载平台和固定平台之间通过三条结构相同的支路连接，三条支路绕固定平台的竖直中心线呈120°均布，三条支路均包括弹簧、阻尼器、移动副、圆柱副和转动副；The multi-degree-of-freedom parallel mechanism vibration damping platform for motor vehicle seats according to the present invention includes a fixed platform and a bearing platform above the fixed platform, the bearing platform is connected to the motor vehicle seat, and three Branches with the same structure are connected, and the three branches are evenly distributed at 120° around the vertical centerline of the fixed platform. The three branches include springs, dampers, moving pairs, cylindrical pairs and rotating pairs;
固定平台上设有支架，支架上装有移动副，移动副包括滑动轴和滑块，滑动轴固定在支架上，滑块在滑动轴上轴向滑动，滑块与支架上滑动轴的底端之间安装弹簧和阻尼器，滑块上设有圆柱副，圆柱副包括圆柱轴和连杆，圆柱轴设置在滑块上，圆柱轴与滑动轴垂直，连杆一端在圆柱轴上轴向滑动和沿轴转动，连杆另一端通过转动副连接承载平台。The fixed platform is provided with a bracket, and the bracket is equipped with a moving pair. The moving pair includes a sliding shaft and a slider. The sliding shaft is fixed on the bracket, and the slider slides axially on the sliding shaft. A spring and a damper are installed between them. A cylindrical pair is provided on the slider. The cylindrical pair includes a cylindrical shaft and a connecting rod. The cylindrical shaft is set on the slider. The cylindrical shaft is perpendicular to the sliding shaft. One end of the connecting rod slides axially on the cylindrical shaft and Rotate along the axis, and the other end of the connecting rod is connected to the carrying platform through the rotating pair.
固定机动车座椅的承载平台和固定平台之间通过三条支路连接，三条运动支路具有相同的结构，各包括一个移动副、一个圆柱副、一个定长连杆、和一个转动副，移动副处装有弹簧和阻尼器；承载平台受力时，通过各个关节副的动作和弹簧阻尼的作用，实现三个平移方向的减振。The bearing platform on which the motor vehicle seat is fixed and the fixed platform are connected by three branches. The three movement branches have the same structure, each including a moving pair, a cylindrical pair, a fixed-length connecting rod, and a rotating pair. Springs and dampers are installed at the joints; when the load-bearing platform is stressed, vibration reduction in three translational directions can be achieved through the action of each joint joint and the effect of spring damping.
优选的，支架为三角支架，三角支架的三条支架腿绕固定平台的竖直中心线呈120°均布。结构简单紧凑，稳定性好。Preferably, the bracket is a triangular bracket, and the three bracket legs of the triangular bracket are evenly distributed at 120° around the vertical center line of the fixed platform. Simple and compact structure, good stability.
优选的，阻尼器为可控被动式电磁阻尼器，电磁阻尼器连接电流调节单元和力传感器，电流调节单元和力传感器连接控制器。阻尼器的阻尼值取决于励磁电流，力传感器检测的电磁阻尼器的数据传递到控制器，控制器根据数据仿真计算确定输入到电磁阻尼器的电流大小，从而改变阻尼值，优化减振效果；且被动式电磁阻尼器结构简单、造价低、可靠性更高。Preferably, the damper is a controllable passive electromagnetic damper, the electromagnetic damper is connected to the current regulation unit and the force sensor, and the current regulation unit and the force sensor are connected to the controller. The damping value of the damper depends on the excitation current, the data of the electromagnetic damper detected by the force sensor is transmitted to the controller, and the controller determines the magnitude of the current input to the electromagnetic damper according to the data simulation calculation, thereby changing the damping value and optimizing the vibration reduction effect; Moreover, the passive electromagnetic damper has the advantages of simple structure, low cost and higher reliability.
优选的，滑动轴轴线和固定平台平面之间的夹角范围为30°-45°。根据结构参数的力学分析，移动副轴线与固定平台之间的减小时，移动副关节所需的平衡驱动力越小。Preferably, the included angle range between the axis of the sliding shaft and the plane of the fixed platform is 30°-45°. According to the mechanical analysis of structural parameters, when the distance between the moving auxiliary axis and the fixed platform decreases, the balance driving force required for the moving auxiliary joint is smaller.
本发明与现有技术相比所具有的有益效果是：The beneficial effect that the present invention has compared with prior art is:
用于机动车座椅的多自由度并联机构减振平台整体结构简单紧凑，完全对称结构有着优良的各向同性，可实现三个移动方向三维减振，有效提高车辆复杂路况行驶时对驾乘人员的缓冲保护，且该平台整体质量轻、惯性小、可操作度高、动态性能响应良好。The multi-degree-of-freedom parallel mechanism vibration damping platform for motor vehicle seats has a simple and compact overall structure, and the completely symmetrical structure has excellent isotropy, which can realize three-dimensional vibration reduction in three moving directions, and effectively improve the safety of the vehicle when driving on complex road conditions. The buffer protection of personnel, and the overall weight of the platform is light, the inertia is small, the maneuverability is high, and the dynamic performance response is good.
附图说明Description of drawings
图1是本发明的结构示意图；Fig. 1 is a structural representation of the present invention;
图中：1、连杆；2、转动副；3、承载平台；4、固定平台；5、支架；6、滑块；7、弹簧；8、阻尼器；9、圆柱轴；10、滑动轴。In the figure: 1. Connecting rod; 2. Revolving pair; 3. Bearing platform; 4. Fixed platform; 5. Bracket; 6. Slider; 7. Spring; 8. Damper; 9. Cylindrical shaft; 10. Slide shaft .
具体实施方式Detailed ways
下面结合附图对本发明的实施例做进一步描述：Embodiments of the present invention are further described below in conjunction with accompanying drawings:
实施例1Example 1
如图1所示，用于机动车座椅的多自由度并联机构减振平台包括固定平台4和固定平台4上方的承载平台3，承载平台3上连接机动车座椅，承载平台3和固定平台4之间通过三条结构相同的支路连接，三条支路绕固定平台4的竖直中心线呈120°均布，三条支路均包括弹簧7、阻尼器8、移动副、圆柱副和转动副；As shown in Figure 1, the multi-degree-of-freedom parallel mechanism damping platform for motor vehicle seats includes a fixed platform 4 and a bearing platform 3 above the fixed platform 4, the bearing platform 3 is connected to the motor vehicle seat, the bearing platform 3 and the fixed The platforms 4 are connected by three branches with the same structure. The three branches are evenly distributed at 120° around the vertical centerline of the fixed platform 4. The three branches all include springs 7, dampers 8, moving pairs, cylindrical pairs and rotating pairs. vice;
固定平台4上设有支架5，支架5上装有移动副，移动副包括滑动轴10和滑块6，滑动轴10固定在支架5上，滑块6在滑动轴10上轴向滑动，滑块6与支架5上滑动轴10的底端之间安装弹簧7和阻尼器8，滑块6上设有圆柱副，圆柱副包括圆柱轴9和连杆1，圆柱轴9设置在滑块6上，圆柱轴9与滑动轴10垂直，连杆1一端在圆柱轴9上轴向滑动和沿轴转动，连杆1另一端通过转动副2连接承载平台3。The fixed platform 4 is provided with a bracket 5, and the bracket 5 is equipped with a moving pair. The moving pair includes a sliding shaft 10 and a slider 6. The sliding shaft 10 is fixed on the bracket 5, and the sliding block 6 slides axially on the sliding shaft 10. A spring 7 and a damper 8 are installed between 6 and the bottom end of the sliding shaft 10 on the support 5, a cylindrical pair is provided on the slider 6, and the cylindrical pair includes a cylindrical shaft 9 and a connecting rod 1, and the cylindrical shaft 9 is arranged on the slider 6 , the cylindrical shaft 9 is perpendicular to the sliding shaft 10, one end of the connecting rod 1 slides axially on the cylindrical shaft 9 and rotates along the axis, and the other end of the connecting rod 1 is connected to the bearing platform 3 through the rotating pair 2.
支架5为三角支架，三角支架的三条支架腿绕固定平台4的竖直中心线呈120°均布，滑动轴10两端通过固定块固定在三条支架腿上。Support 5 is a triangular support, and three support legs of the triangular support are 120 ° evenly distributed around the vertical center line of the fixed platform 4, and the two ends of the sliding shaft 10 are fixed on the three support legs by a fixed block.
滑动轴10轴线和固定平台4平面之间的夹角范围为30°-45°。The angle range between the axis of the sliding shaft 10 and the plane of the fixed platform 4 is 30°-45°.
实际制造时，根据具体情况设计减振平台的结构尺寸，选择弹簧7和阻尼器8，其各项基本参数影响减振时的驱动平衡力。当机动车行驶在路况复杂的情况时，通过车架、座椅传递振动，连接座椅的承载平台3通过三条运动支路实现三个平移方向的快速减振响应，提高座椅的减振性能，改善车辆平顺性，提高乘坐舒适度。During actual manufacture, design the structural size of the damping platform according to specific conditions, select the spring 7 and the damper 8, and their basic parameters affect the driving balance force during vibration damping. When the motor vehicle is driving on a complex road condition, the vibration is transmitted through the frame and the seat, and the bearing platform 3 connected to the seat realizes fast vibration damping response in three translational directions through three motion branches, improving the vibration damping performance of the seat , Improve vehicle ride comfort and ride comfort.
实施例2Example 2
在实施例1的基础上，阻尼器8选用可控被动式电磁阻尼器，电磁阻尼器连接电流调节单元和力传感器，电流调节单元和力传感器连接控制器。On the basis of Embodiment 1, the damper 8 is a controllable passive electromagnetic damper, the electromagnetic damper is connected to the current regulation unit and the force sensor, and the current regulation unit and the force sensor are connected to the controller.
该控制系统可选择性的开启或关闭，控制系统关闭状态下，电磁阻尼器自身具有一定的阻尼特性，在被动减振状态下进行工作；控制系统开启工作时，力传感器检测的电磁阻尼器的数据传递到控制器，控制器根据数据仿真计算确定输入到电磁阻尼器的电流大小，从而改变阻尼值，在避开对人体产生共振频率的前提下，优化减振效果。The control system can be turned on or off selectively. When the control system is turned off, the electromagnetic damper itself has a certain damping characteristic and works in a passive damping state. When the control system is turned on, the electromagnetic damper detected by the force sensor The data is transmitted to the controller, and the controller determines the magnitude of the current input to the electromagnetic damper according to the data simulation calculation, thereby changing the damping value, and optimizing the vibration reduction effect on the premise of avoiding the resonance frequency to the human body.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280553.6ACN105818723B (en) | 2016-04-29 | 2016-04-29 | For the multiple freedom parallel mechanism vibration reduction platform of automobile seat |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610280553.6ACN105818723B (en) | 2016-04-29 | 2016-04-29 | For the multiple freedom parallel mechanism vibration reduction platform of automobile seat |
| Publication Number | Publication Date |
|---|---|
| CN105818723A CN105818723A (en) | 2016-08-03 |
| CN105818723Btrue CN105818723B (en) | 2018-06-29 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610280553.6AExpired - Fee RelatedCN105818723B (en) | 2016-04-29 | 2016-04-29 | For the multiple freedom parallel mechanism vibration reduction platform of automobile seat |
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| CN (1) | CN105818723B (en) |
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