技术领域technical field
本发明属于减振座椅技术领域，具体涉及一种工程车辆用4SRS+SP三维并联减振座椅结构。The invention belongs to the technical field of vibration-damping seats, and in particular relates to a 4SRS+SP three-dimensional parallel vibration-damping seat structure for engineering vehicles.
背景技术Background technique
车辆在行驶过程中由于路面不平、紧急避让或制动等原因引起车内环境多维振动，不仅影响车内乘员舒适性，严重时甚至威胁乘员健康和安全。工程车辆驾驶员一次工作的时间较长，并且车辆经常行驶在道路工况比较恶劣的路面上，如果工程驾驶员长期从事这类车辆的驾驶，那么他们很有可能会患上某一种或多种职业病，如腰痛和椎间盘突出，据有关调查数据显示，驾驶这类车辆的人群患上这些病的概率比一般人群要大2-4倍。在座椅的垂直方向上，人体的内脏器官在4～8Hz时将会产生共振，而在8～12.5Hz的范围内的振动对人的脊椎系统的影响最大，因此振动对人身体健康和安全的影响受到世界性的广泛研究和重视。而且俯仰向、侧倾向的振动也会影响驾驶员的身体健康，也会影响司机的操作稳定性。现在很多车辆只注重垂直方向的减振却忽略了俯仰向、侧倾向的减振。During the driving process of the vehicle, the multi-dimensional vibration of the environment inside the vehicle is caused by reasons such as uneven road surface, emergency avoidance or braking, which not only affects the comfort of the occupants in the vehicle, but even threatens the health and safety of the occupants in severe cases. Drivers of engineering vehicles work for a long time at a time, and the vehicles often drive on roads with relatively bad road conditions. If engineering drivers have been engaged in driving such vehicles for a long time, they are likely to suffer from one or more diseases. Some occupational diseases, such as low back pain and intervertebral disc herniation, according to relevant survey data, the probability of these diseases among people who drive such vehicles is 2-4 times greater than that of the general population. In the vertical direction of the seat, the internal organs of the human body will resonate at 4 to 8 Hz, and the vibration in the range of 8 to 12.5 Hz has the greatest impact on the human spinal system, so vibration has a great impact on human health and safety. Its influence has been extensively studied and valued worldwide. Moreover, the vibration of pitching and sideways will also affect the health of the driver, as well as the operating stability of the driver. Nowadays, many vehicles only focus on the vibration reduction in the vertical direction, but ignore the vibration reduction in the pitch and lateral directions.
基于上述原因，在车辆技术领域，多维减振一直是车辆座椅领域突破的重要研究方向，一个多维减振性能良好的座椅，不仅能够降低振动对驾驶人员的伤害，还能提高其舒适性、安全性，提高工作效率。Based on the above reasons, in the field of vehicle technology, multi-dimensional vibration reduction has always been an important research direction for breakthroughs in the field of vehicle seats. A seat with good multi-dimensional vibration reduction performance can not only reduce the damage of vibration to the driver, but also improve its comfort. , safety, and improve work efficiency.
在车辆座椅减振方面，传统机械悬置式座椅减振效果不佳，虽然采用非线性悬架使座椅竖直方向减振性能得到改善，但完全吻合其非线性特性的弹性元件设计较为困难，且此类座椅难以实现多维减振。多维减振悬架可以有效衰减多维冲击，显著提高车辆座椅乘坐舒适性。In terms of vehicle seat vibration reduction, the traditional mechanical suspension seat vibration reduction effect is not good. Although the non-linear suspension can improve the vertical vibration reduction performance of the seat, the design of the elastic element that fully matches its nonlinear characteristics is relatively poor. Difficult, and this type of seat is difficult to achieve multi-dimensional vibration reduction. The multi-dimensional damping suspension can effectively attenuate multi-dimensional shocks and significantly improve the ride comfort of vehicle seats.
发明内容Contents of the invention
针对上述技术问题，提供了一种能够多维减振且结构简单的工程车辆用4SRS+SP三维并联减振座椅结构。In view of the above technical problems, a 4SRS+SP three-dimensional parallel vibration-damping seat structure for engineering vehicles capable of multi-dimensional vibration reduction and simple structure is provided.
为了解决上述技术问题，本发明采用的技术方案为：In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
一种工程车辆用4SRS+SP三维并联减振座椅结构，包括静平台、动平台、边减振支链、中心减振支链、座椅主体，所述静平台底部固定在驾驶室底板上，所述动平台设置在静平台正上方，所述座椅主体固定在动平台上方，所述静平台和动平台的边部之间通过边减振支链连接，所述静平台和动平台的中部之间通过中心减振支链连接。A 4SRS+SP three-dimensional parallel vibration-reducing seat structure for engineering vehicles, including a static platform, a dynamic platform, side vibration-damping branch chains, a central vibration-damping branch chain, and a seat body, and the bottom of the static platform is fixed on the cab floor , the moving platform is set directly above the static platform, the seat body is fixed above the moving platform, the edges of the static platform and the moving platform are connected by side vibration-absorbing branch chains, the static platform and the moving platform The middle parts are connected by a center damping branch chain.
所述边减振支链包括第一圆柱套筒、第二圆柱套筒，所述第一圆柱套筒套装在第二圆柱套筒内，所述第一圆柱套筒的两端均固定有连杆Ⅰ，两个连杆Ⅰ之间固定有横杆，所述第二圆柱套筒的两端均固定有连杆Ⅱ，两个连杆Ⅱ之间固定有横杆。The side vibration-damping branch chain includes a first cylindrical sleeve and a second cylindrical sleeve, the first cylindrical sleeve is set in the second cylindrical sleeve, and both ends of the first cylindrical sleeve are fixed with connecting Rod I, a cross bar is fixed between the two connecting rods I, connecting rod II is fixed at both ends of the second cylindrical sleeve, and a cross bar is fixed between the two connecting rods II.
所述边减振支链有四个，四个边减振支链呈四边形对称布置。There are four side vibration-damping branch chains, and the four side vibration-damping branch chains are symmetrically arranged in a quadrilateral.
在左右方向上，所述连杆Ⅰ通过球铰接与静平台连接，所述连杆Ⅱ通过球铰接与动平台连接，在前后方向上，所述连杆Ⅰ通过球铰接与动平台连接，所述连杆Ⅱ通过球铰接与静平台连接。In the left and right directions, the connecting rod I is connected to the static platform through a ball joint, and the connecting rod II is connected to the moving platform through a ball joint. In the front-rear direction, the connecting rod I is connected to the moving platform through a ball joint. The connecting rod II is connected with the static platform through a ball joint.
所述边减振支链的两个横杆之间连接有单杆式磁流变阻尼器。A single-rod magneto-rheological damper is connected between the two cross bars of the side vibration-damping branch chain.
所述中心减振支链包括竖向圆柱套筒、竖向连杆、阻尼弹簧，所述竖向连杆套装在竖向圆柱套筒内，所述竖向圆柱套筒和竖向连杆外部套有阻尼弹簧。The center damping branch chain includes a vertical cylindrical sleeve, a vertical connecting rod, and a damping spring, the vertical connecting rod is set inside the vertical cylindrical sleeve, and the vertical cylindrical sleeve and the vertical connecting rod are Set with damping spring.
所述中心减振支链的底部固定在静平台上，所述中心减振支链的顶部通过球铰接与动平台连接。The bottom of the center damping branch chain is fixed on the static platform, and the top of the center damping branch chain is connected with the moving platform through a ball joint.
本发明与现有技术相比，具有的有益效果是：Compared with the prior art, the present invention has the beneficial effects of:
由自由度公式可知，n表示运动副数目，m表示杆件数目，fi表示第i个运动副的自由度，l表示机构存在的过约束数目，本发明座椅可以实现垂向、俯仰、侧倾三个方向的减振，增加了驾驶员的乘坐舒适性；本发明增强了驾驶员的操作稳定性，降低了对驾驶员的身体伤害，提高了工作效率；本发明座椅悬架结构简单，成本较低，加工方便，便于安装控制。 It can be seen from the degree of freedom formula thatn represents the number of kinematic pairs,m represents the number of rods,fi represents the degree of freedom of thei -th kinematic pair, andl represents the number of over-constraints in the mechanism. The seat of the present invention can realize vertical, pitch, Vibration reduction in three directions of roll increases the driver's riding comfort; the invention enhances the driver's operational stability, reduces the physical injury to the driver, and improves work efficiency; the seat suspension structure of the invention Simple, low cost, easy processing, easy installation and control.
附图说明Description of drawings
图1是本发明的总体结构示意图；Fig. 1 is the overall structural representation of the present invention;
图2是座椅悬架的结构示意图；Fig. 2 is the structural representation of seat suspension;
图3是本发明的边减振支链结构示意图；Fig. 3 is a schematic diagram of the side vibration-damping branched chain structure of the present invention;
图4是本发明的中心减振支链结构示意图；Fig. 4 is a schematic diagram of the center damping branch chain structure of the present invention;
其中：1为静平台，2为动平台，3为边减振支链，4为中心减振支链，5为座椅主体，6为球铰接，3-1为第一圆柱套筒，3-2为第二圆柱套筒，3-3为连杆Ⅰ，3-4为连杆Ⅱ，3-5为横杆，3-6为单杆式磁流变阻尼器，4-1为竖向圆柱套筒，4-2为竖向连杆，4-3为阻尼弹簧。Among them: 1 is the static platform, 2 is the dynamic platform, 3 is the side vibration damping branch chain, 4 is the center vibration damping branch chain, 5 is the seat main body, 6 is the ball hinge, 3-1 is the first cylindrical sleeve, 3 -2 is the second cylindrical sleeve, 3-3 is the connecting rod I, 3-4 is the connecting rod II, 3-5 is the horizontal bar, 3-6 is the single-rod magnetorheological damper, 4-1 is the vertical To the cylindrical sleeve, 4-2 is a vertical connecting rod, and 4-3 is a damping spring.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
一种工程车辆用4SRS+SP三维并联减振座椅结构，如图1所示，包括静平台1、动平台2、边减振支链3、中心减振支链4、座椅主体5，静平台1底部固定在驾驶室底板上，动平台2设置在静平台1正上方，座椅主体5固定在动平台2上方，静平台1和动平台2的边部之间通过边减振支链3连接，静平台1和动平台2的中部之间通过中心减振支链4连接。当座椅主体5受到垂向的振动激励时，这种垂向的振动激励通过车辆底盘传到座椅静平台1，静平台1的振动引起中心减振支链4的形变以及边减振支链3的振动，通过中心减振支链4以及边减振支链3将该振动能转化为热能耗散；当座椅主体5受到俯仰振动时，边减振支链3开始工，将该振动能转化为热能耗散，同理，当座椅主体5受到侧倾方向的激励时，减振原理跟俯仰方向的工作原理相似。A 4SRS+SP three-dimensional parallel vibration-reduction seat structure for engineering vehicles, as shown in Figure 1, includes a static platform 1, a dynamic platform 2, a side vibration-damping branch chain 3, a central vibration-damping branch chain 4, and a seat body 5. The bottom of the static platform 1 is fixed on the bottom plate of the cab, the dynamic platform 2 is set directly above the static platform 1, the seat body 5 is fixed above the dynamic platform 2, and the edge of the static platform 1 and the dynamic platform 2 is connected by side vibration damping supports. The chain 3 is connected, and the middle part of the static platform 1 and the moving platform 2 is connected by a central damping branch chain 4. When the seat main body 5 is excited by vertical vibration, this vertical vibration excitation is transmitted to the seat static platform 1 through the vehicle chassis, and the vibration of the static platform 1 causes the deformation of the center vibration-damping branch chain 4 and the side vibration-damping support The vibration of the chain 3 converts the vibration energy into heat energy dissipation through the center damping branch chain 4 and the side vibration damping branch chain 3; when the seat main body 5 is subject to pitch vibration, the side vibration damping branch chain 3 starts to work, Vibration energy is transformed into heat dissipation. Similarly, when the seat body 5 is excited in the roll direction, the vibration reduction principle is similar to that in the pitch direction.
进一步，优选的，边减振支链3包括第一圆柱套筒3-1、第二圆柱套筒3-2，第一圆柱套筒3-1套装在第二圆柱套筒3-2内，从而形成旋转副，第一圆柱套筒3-1的两端均固定有连杆Ⅰ3-3，两个连杆Ⅰ3-3之间固定有横杆3-5，第二圆柱套筒3-2的两端均固定有连杆Ⅱ3-4，两个连杆Ⅱ3-4之间固定有横杆3-5。Further, preferably, the side vibration-damping branch chain 3 includes a first cylindrical sleeve 3-1 and a second cylindrical sleeve 3-2, the first cylindrical sleeve 3-1 is set in the second cylindrical sleeve 3-2, Thereby forming a rotary pair, the two ends of the first cylindrical sleeve 3-1 are fixed with the connecting rod I3-3, the cross bar 3-5 is fixed between the two connecting rods I3-3, and the second cylindrical sleeve 3-2 The two ends of each are fixed with connecting rod II 3-4, and a cross bar 3-5 is fixed between the two connecting rods II 3-4.
进一步，优选的，边减振支链3有四个，四个边减振支链3呈四边形对称布置。Further, preferably, there are four side vibration-damping branch chains 3 , and the four side vibration-damping branch chains 3 are arranged symmetrically in a quadrilateral.
进一步，在左右方向上，连杆Ⅰ3-3通过球铰接6与静平台1连接，连杆Ⅱ3-4通过球铰接6与动平台2连接上，在前后方向上，连杆Ⅰ3-3通过球铰接6与动平台2连接，连杆Ⅱ3-4通过球铰接6与静平台1连接。Further, in the left and right direction, the connecting rod I3-3 is connected with the static platform 1 through the ball joint 6, and the connecting rod II3-4 is connected with the moving platform 2 through the ball joint 6. The hinge 6 is connected with the moving platform 2, and the connecting rod II 3-4 is connected with the static platform 1 through the ball hinge 6.
进一步，优选的，中心减振支链4包括竖向圆柱套筒4-1、竖向连杆4-2、阻尼弹簧4-3，竖向连杆4-2套装在竖向圆柱套筒4-1内，竖向圆柱套筒4-1和竖向连杆4-2外部套有阻尼弹簧4-3。Further, preferably, the central damping branch chain 4 includes a vertical cylindrical sleeve 4-1, a vertical connecting rod 4-2, and a damping spring 4-3, and the vertical connecting rod 4-2 is set on the vertical cylindrical sleeve 4 In -1, the outside of the vertical cylindrical sleeve 4-1 and the vertical connecting rod 4-2 is covered with a damping spring 4-3.
进一步，中心减振支链4的底部固定在静平台1上，中心减振支链4的顶部通过球铰接6与动平台2连接。Further, the bottom of the central vibration-damping branch chain 4 is fixed on the static platform 1 , and the top of the central vibration-damping branch chain 4 is connected with the moving platform 2 through a ball joint 6 .
本发明的工作原理为：动静平台上的球面副和旋转副的相互配合下，实现座椅悬架绕x轴、y轴的转动。同时结合减振支链上的单杆式磁流变阻尼器将振动产生的能量耗散，这样最大程度的保证了动平台不受或少受振动的影响；利用阻尼弹簧可以加强对z轴方向的减振效果。当座椅受到垂向的振动激励时，这种垂向的振动激励通过车辆底盘传到座椅静平台，静平台的振动引起阻尼弹簧的形变以及减振支链的振动，通过阻尼弹簧以及单杆式磁流变阻尼器将该振动能转化为热能耗散；当座椅受到俯仰振动时，减振支链开始工作，并触发单杆式磁流变阻尼器工作，将该振动能转化为热能耗散；同理，当座椅受到侧倾方向的激励时，减振原理跟俯仰方向的工作原理相似。综上，该机构可实现垂向、俯仰、侧倾的三维座椅减振。The working principle of the present invention is: the rotation of the seat suspension around the x-axis and the y-axis is realized under the mutual cooperation of the spherical pair and the rotating pair on the dynamic and static platform. At the same time, combined with the single-rod magneto-rheological damper on the vibration-absorbing branch chain, the energy generated by the vibration is dissipated, which ensures that the moving platform is not or less affected by the vibration; the use of the damping spring can strengthen the z-axis direction. the damping effect. When the seat is excited by vertical vibration, this vertical vibration excitation is transmitted to the static platform of the seat through the vehicle chassis, and the vibration of the static platform causes the deformation of the damping spring and the vibration of the damping branch chain. The rod-type magnetorheological damper converts the vibration energy into heat dissipation; when the seat is subjected to pitch vibration, the vibration-absorbing branch chain starts to work, and triggers the work of the single-rod magnetorheological damper, converting the vibration energy into Thermal energy dissipation; similarly, when the seat is excited in the roll direction, the principle of vibration reduction is similar to that in the pitch direction. In summary, the mechanism can realize vertical, pitch, and roll three-dimensional seat vibration reduction.
上面仅对本发明的较佳实施例作了详细说明，但是本发明并不限于上述实施例，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化，各种变化均应包含在本发明的保护范围之内。Only the preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can also be made without departing from the gist of the present invention. Various changes should be included within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852479.4ACN110525294A (en) | 2019-09-09 | 2019-09-09 | A kind of engineering truck 4SRS+SP Three-dimensional Parallel shock absorbing seat structure |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910852479.4ACN110525294A (en) | 2019-09-09 | 2019-09-09 | A kind of engineering truck 4SRS+SP Three-dimensional Parallel shock absorbing seat structure |
| Publication Number | Publication Date |
|---|---|
| CN110525294Atrue CN110525294A (en) | 2019-12-03 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910852479.4APendingCN110525294A (en) | 2019-09-09 | 2019-09-09 | A kind of engineering truck 4SRS+SP Three-dimensional Parallel shock absorbing seat structure |
| Country | Link |
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| CN (1) | CN110525294A (en) |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | Application publication date:20191203 | |
| RJ01 | Rejection of invention patent application after publication |