The engine vibration control engineering construction machinery construction machinery engine vibration method is sometimes unavoidable resonance, therefore, used to increase the system damping or dynamic vibration absorber to reduce vibration response. Dynamic Absorber belong pressing band control, mini-excavators much money, using viscoelastic damping material has a high energy loss, when the vibration damping material spread in the interior of the material tensile, bending, shear deformation, thereby consuming a large amount of vibration energy, the vibration damping. The main advantage of using vibration damping technology is not necessary to change the original structure, no additional auxiliary equipment, requires no external energy, take up less space efficient, is a promising vibration and noise reduction measures. Loader pioneered this dynamic vibration damper in the selection, use of new technologies to achieve the desired effect of vibration and noise reduction. Conclusion As people improve the mechanical properties of engineering requirements, traditional vibration reduction technology can not meet the requirements, the introduction of new damping technology is imperative. In the future, to continue the application of modern design methods and tools, the use of advanced manufacturing technology to reduce or eliminate harmful engine excitation forces and moments generated during operation of the control and effective, reasonable cost of construction machinery engine damping system full play action to reduce the impact of construction machinery engine vibration performance and improve our products in the market competitiveness. Taian Jia and Heavy Machinery Co., Ltd. how to get the excavator hydraulic system no noise? One. Piston pump or motor noise two relief valve relief valve is easy to produce noise frequency noise, used mini excavators prices, mainly due to the pilot valve performance is unstable, that is, before the pilot valve chamber pressure caused by high frequency oscillation air vibrations generated by the noise. The main reasons are: 1. needle during use due to frequent opening and excessive wear, the needle valve cone and seat can not seal, causing the pilot flow instability, resulting in pressure fluctuations caused by the noise, and you should be repaired or replacement. 2. The oil mixed with air, in front of the pilot valve cavity to form cavitation caused by high frequency noise. At this point, mini-excavators offer, should be drained to prevent outside air and air re-enter. 3. The pilot valve by the spring fatigue deformation caused by its regulator function is unstable, so that the pressure fluctuations caused by the noise, you should replace the spring. Three. 1. noise hydraulic cylinder oil mixed with air or hydraulic cylinder air is not completely drained, cavitation under high pressure caused by large noise. In this case, Luohe mini excavators shall promptly drained air. 2. The cylinder head or piston rod seal tight bend in the course of the campaign and also because of other fresh produce noise. In this case, must be replaced or straightening rod seals. IV. Dead line pipe bend too much noise or loose fixing clips can also produce vibration and noise. Therefore, the circuit arrangement should avoid dead corner, for loose clamps must be tightened.泰安嘉 and Heavy Machinery Co., Ltd. Luohe mini excavators, mini-excavators price list, Kerry and Heavy Industries (quality businessmen) are provided by 泰安嘉 and Heavy Machinery Co., Ltd ..泰安嘉 and Heavy Machinery Co., Ltd. (www.tajhzg.com/) to provide "hydraulic excavators, loaders construction machinery, mining machinery, metallurgical machinery, oil machinery, Ring" and other services, the company has other "Stoker and" brand. Focus on the mining machinery industry in Shandong Tai'an higher visibility. Welcomes inquiries, contact: Xing Jingli.