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目前,国内很多大吨位铰接式轮胎驱动压路机的制动系,为气推油的半液压式制动。此系统工作可靠、制动效果好,这是一致公认的。但缺点是:结构复杂,如该系统需配置空气压缩机、油水分离器、贮气简、压力控制器、气动阀以及气推油的增压器等;功耗高,一般气泵工作需消耗2.5～4kW的功率;噪声大,如气泵的运行噪音和排气噪音高达85～90dB;制动滞后时间长等。 下面介绍几种利用液压动力源替代气压动力源的实例。
At present, many domestic large tonnage articulated tire drive roller braking system, the gas-hydraulic semi-hydraulic brake. This system is reliable, braking effect is good, it is unanimously recognized. But the disadvantage is: the structure is complex, such as the system needs to configure the air compressor, oil-water separator, gas storage Jane, pressure controller, pneumatic valve and gas push oil turbocharger; 4kW power; noise, such as the noise of the pump running and exhaust noise up to 85 ~ 90dB; brake lag time and so on. Here are some examples of using hydraulic power sources instead of pneumatic power sources.