| 摘要 |
<p>The invention relates to transport engineering, in particular to the suspension systems for caterpillar drives. The levered centerpoint suspension of a caterpillar drive comprises a pendulum arm, which is coupled to a frame via an elastic element, and a pivot pin geometrically coinciding with the rotational axis of the shaft of the drive sprocket wheels (chain gears). A balancing lever provided with track idlers and/or track wheels and/or track slide guides is connected to the pendulum arm in such a way that it swingable thereon. In the first variant, the sprocket shaft axis is secured between two frame brackets. The shaft with the sprocket wheels rotates about said axis and the pendulum arm socket is put onto the middle part of the shaft as onto a pivot pin. In the second variant, the sprocket shaft axis is secured between two frame brackets. The socket of an U-shaped fork-like pendulum arm swings on said axis. The shaft with the sprocket wheels rotates about the middle part of the socket as about an axis. According to the third variant, the pendulum arm is in the form of a fork. The balancing lever is H-shaped and comprises two longitudinal girders interconnected by means of a crossbar. The balancing lever is disposed between the pendulum arm blades and is connected to said pendulum arm as to swing on a transverse axis. The invention makes it possible to increase the tension force of a track.</p> |
