摘要：【中文】本发明提供一种施工车辆底盘，包括：行走机构、底架、回转支承和上车体，还包括：支撑于底架和回转支承之间的增高机构。在本方案中，通过在底架和回转支承之间设置增高机构，以抬高了上车体的高度，进而使得上车体高出于水面，从而使得施工车辆能够适应在较深水区施工，以此增强了施工车辆的作业能力。本发明还提供了一种应用上述施工车辆底盘的施工车辆，特别是一种旋挖钻机。 【EN】The present invention provides a construction vehicle chassis, comprising: running gear, chassis, slewing bearing and the body of going up the car still include: and a heightening mechanism supported between the underframe and the slewing bearing. In this scheme, through set up between chassis and slewing bearing and increase the mechanism to raise the height of the upper carriage body, and then make the upper carriage body be higher than out of the surface of water, thereby make construction vehicle can adapt to the construction in deep water district, with this operating capacity that has strengthened construction vehicle. The invention also provides a construction vehicle applying the construction vehicle chassis, in particular a rotary drilling rig.