装载机发动机减振妙招

发动机是装载机主要振动源，而发动机振动的传播直接影响到装载机的整机可靠性和使用寿命，同时也使司机的乘坐舒适性变差，降低工作效率，因此要应用现代设计方法和手段，减少或消除发动机在工作过程中所产生的有害振动，那么应该采取哪些方法减振呢？

1、控制振源
改善发动机平衡性能、动力学性能、零部件的加工与装配精度等。削弱机振源和避免共振首先应从设计阶段考虑，要在整体设计中贯穿系统工程思想，充分应用现代设计方法，如有限源设计、可靠性设计、稳健设计、优化设计、计算机辅助设计以及智能系统和专家系统设计。
Improve engine balance of performance, dynamics performance, precision machining and assembly of components and so on. Weaken the machine and avoid resonance vibration source should first consider the design stage, to the overall design of the system throughout the project idea, the full application of modern design methods, such as finite source of design, reliability design, robust design, optimization design, computer-aided design and intelligent systems and expert system design.

2、振动的隔离
橡胶支承一般安装在车架上，根据受力情况分为压缩型、剪切型和压缩剪切复合型等。压缩型结构简单，制造容易，应用广泛且由于自振频率较高，一般限于垂直方向上使用。钢丝绳作为减振元件，具有低频大阻尼的高频低刚度的变参数性能，因而能有效的降低机体振动。液压支承系统对发动机大幅振动起到迅速衰减的作用，中高频时具有较低的动刚度、能有效得降低驾驶室内的振动与燥声。
Rubber bearing is usually installed on the frame, according to the forces into compression type, shear and compression shear complex type. Simple compression-type structure, easy to manufacture a wide range of applications due to the high natural frequency, is generally limited to use in the vertical direction. Variable parameters of performance as a high-frequency low-rigidity damping element rope, with a low frequency and large damping, which can effectively reduce body vibration. Hydraulic support system for engine vibration plays a significant role in the rapid decay, with a low dynamic stiffness in the high frequencies, can effectively reduce the cab was vibration and dry sound.

3、发动机振动的控制
动力吸振器属于榨频带控制，采用粘弹性阻尼材料具有很高的能量损耗，当振动传到阻尼材料时，在材料内部产生拉伸、弯曲、剪切等变形，从而消耗大量的振动能量，使振动衰减。
DVA are squeezed band control, using viscoelastic damping material has a high energy loss, when the vibration damping material spread, generated within the material stretching, bending, shear deformation, which consume large amounts of vibrational energy, so vibration attenuation.