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公开(公告)号：US3964834A
公开(公告)日：1976-06-22
申请号：US544513
申请日：1975-01-27
CPC分类号： E01C19/235 , E01C19/282 , E01C19/4826
摘要： Apparatus for effecting passes of a self-propelled compacting machine following a spreading machine after the latter has laid a strip of surfacing composition. A guide vehicle is hitched to the spreading machine and is towed therewith, and has a guide member which may either have the contour of a closed geometrical figure such as a circle or be simply a pivot. The compacting machine turns about the guide vehicle along an epicycloidal path of travel. A sensing device on the compacting machine which may be a feeler or a flexible member is responsive to the variations of the radial distance between the compacting machine and guide member. The sensing device operates a limit switch when the variations exceed a predetermined amount which in turn controls an electrically operable hydraulic valve which communicates with a double-action cylinder and piston unit controlling in turn the direction of the front wheel of the compacting machine for increasing or decreasing the turning radius thereof. The compacting machine is thus entirely automatic and needs no driver when in operation. Such a compacting machine is also provided with a conventional steering wheel and can be used independently of the guide vehicle and the spreading machine.
摘要翻译： 用于在铺展机后铺设一条铺面组合物的条带之后进行自走式压实机的通过的装置。 引导车辆被牵引到铺展机上并被牵引，并且具有导向构件，其可以具有闭合的几何图形的轮廓，例如圆形或简单的枢轴。 压实机沿着一条不寻常的行进路线转过导引车。 压实机上的感测装置可以是触发器或柔性构件，其响应于压实机和引导构件之间的径向距离的变化。 当变化超过预定量时，感测装置操作限位开关，该预定量又控制与双作用气缸和活塞单元连通的电动可操作的液压阀，并且活塞单元依次控制压实机的前轮的方向以增加或 减小其转弯半径。 因此，压实机是完全自动的，在操作时不需要驱动器。 这种压实机还设置有传统的方向盘，并且可以独立于导向车辆和撒布机使用。
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