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  • 图片描述
  • Trailer transportation
  • 图片描述
  • 图片描述
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Trailer transportation

Trailer transportation began in the early 1920s. The initial automobile train is composed of automobile and 1 ~ 2 full trailers. This kind of automobile train has poor driving stability. Later, an automobile train composed of saddle tractor and semi-trailer appeared, which soon became the main means of carrying goods in trailer transportation. China began to develop trailer transportation in the l consulting

Product details

    Trailer transportation began in the early 1920s. The initial automobile train is composed of automobile and 1 ~ 2 full trailers. This kind of automobile train has poor driving stability. Later, an automobile train composed of saddle tractor and semi-trailer appeared, which soon became the main means of carrying goods in trailer transportation. China began to develop trailer transportation in the late 1950s. By the end of 1983, 65% of the commercial trucks and tractors in the national transportation system had towed full trailers and semi trailers. A few cities such as Shanghai, Beijing and Tianjin mainly use automobile trains composed of saddle tractors and semi trailers, while most provinces and cities still mainly use automobile trains composed of automobiles and full trailers.
    The following principles shall be followed when determining the total mass of automobile and train:
    ① The average technical speed shall not be less than 70% of the single vehicle, and the high speed shall not be less than the economic speed of the single vehicle.
    ② Be able to start with gear 1 and pass through gear 2 on the encountered large ramp; The driving time of direct gear (including overspeed gear) shall not be less than 60% of the driving time of a single vehicle.
    ③ Start in gear 1 until you shift to direct gear, and the time required to reach the same speed shall not be more than 1 time of the single vehicle; When driving on a horizontal road in direct gear, it shall have a certain acceleration capacity. When driving stably at medium speed in direct gear on a flat road, the engine load shall not be greater than 70%.
    ④ The fuel consumption shall not exceed 150% of the fuel consumption of a single vehicle.
    ⑤ The driving force is sufficient and the driving wheel does not slip.
    ⑥ The specific power shall not be less than 4.8kw/t.
    ⑦ One vehicle and one trailer. Vehicles with large traction can Trailer large tonnage trailers.