Delong cab usability concerns. Delong cab usability aspects include: HMI elements reasonable, readable interface and control feel good. Only by anthropometry and biomechanics knowledge and data, in order to ensure the cab environment suitable for the physical and psychological characteristics of the human body, to ensure a healthy posture drivers work so people can not only efficiently complete the work 'they feel comfortable and not produce fatigue. Cab seat design parameters should meet the "seat - settee" angle of 92 degrees, 7 degrees inclination seat after seat height 43-50cm, seat depth is 48-52cm, seat depth is 40-42cm, backrest height 45-50cm, influencing factors, including the degree of visual dashboard perspective and horizon, dashboard own dimensions, the size ratio of the display arrangement and shape information and graphics, digital, display color and other factors. Should be simple, eye-catching as the main design language, avoiding complicated graphics. Noise control heavy truck cab. Vehicle cab sound field is more complicated China's heavy truck cab, not just external incoming noise heavy truck cab, but also the noise generated by the sound source and the internal wall reflections arising due to reverberant, the equivalent of a cab acoustic enclosures, but some of its wall itself is a strong source of noise. The main noise sources cab noise transfer and solid gas transmission noise. Noise in which the gas is passed mainly radiated noise of the engine surface, intake and exhaust noise, fan noise and the sound of gas, the gas flow of high frequency noise; noise and solid passing mainly through the frame driveline vibration transmitted to the cab internal low-IF noise and vibration. So for the occupants in terms of safe and comfortable driving environment must have a good seal can do to ensure the heavy truck cab cab exterior parts, good sealing performance can effectively reduce the external noise passing cab, reduce driving ear decibels index personnel safe operation of the vehicle. Heavy truck cab parts, heavy truck cab, Jinan Yiu Cheung Yiu Cheung provided by Jinan Trading Company. Jinan Yiu Cheung Trading Company (www.jinanyaoxiang.com) strong, credible, in Jinan, Shandong engine assembly industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead you hand Jinan Yao harmony into the brilliant, for a better future!