履带装置首先简单地应用于被拖曳的畜力车辆上。这只需用结实的绳索把一些横木条联结起来,并绕过前后两轮之外,以使集中的车轮负荷分布到较宽阔的地面,就可防止车轮在地面松软处下陷,能通过一定宽度的壕沟。在动力驱动的履带车辆上,开始车轮既用来负重,又靠摩擦力驱动履带,动力要经过轮下履带的内外两面才能达到地面,如果负重轮与履带间残留泥土沙石,就很容易打滑,因此坦克设计师采用了让驱动轮与履带之间的齿轮啮合来传达动力,不再只依靠负重轮的压力提供足够的摩擦或附着力以推动车辆。主动轮和负重轮分工合作,形成专门的驱动 The crawler is first and foremost applied to towed animal vehicles. This simply by solid ropes to a number of cross-bar linked together and bypass the front and rear two rounds, in order to concentrate the wheel load distribution to a wider ground, you can prevent the wheels sagging in the ground soft, through a certain width Trenches. In power-driven tracked vehicles, the wheels are used both for load-bearing and friction-driven crawlers. The power is driven to the ground by the inner and outer surfaces of the track under the wheels. If the soil remains between the track rollers and the track, it is easy to slip , The tank designer uses a gear meshing between the drive wheels and the track to transmit power and no longer rely solely on the pressure of the road wheels to provide sufficient friction or adhesion to propel the vehicle. Driving wheel and wheel-wheel division of labor to form a special drive