本发明涉及一种双作用缸锁定（20）。 这包括气缸（21）和沿轴向方向的活塞（22）由流体压力介质的装置（23）相对于汽缸（21）可移动的，但旋转地固定到所述气缸（21）连接。 所述活塞（22）耦合于经由非自锁螺纹（37）的主轴（35.2）。 主轴（35.2）是围绕旋转轴（43）可转动相对于汽缸（21）和存储于所述轴向方向（23）轴向可移动。 在主轴（35.2），第一终端双锥体（45.1）被固定到所述气缸（21）是固定在第二夹紧双锥形体（45.2）。 第一夹紧双圆锥体（45.1）是由在轴向方向（23）与第二夹紧双锥体（45.2）的主轴（35.2）的移动在自锁夹两个锁定位置（46​​.2）所形成。 主轴（35.2）在第一流体和推力轴承（53.1），其在经由第一压力介质供给管道（54.1）与所述流体压力介质作用并且是被支承在第一夹紧双锥体（45.1） 在第二流体和推力轴承（53.2）被安装时，它通过第二压力介质入口通道（54.2）可以在与所述流体压力介质加载。 分流器（60），用于将所述流体压力介质的主流量在第一部分中，体积流和第二子容积流包括在所述第一压力介质流入（54.1）开口进入所述第一部分中的第一压力介质出口通道（61.1） -Volumenstrom并且其中打开用于第二部分的体积流量的第二压力介质出口通道（61.2），第二压力介质入口通道（54.2）。 流量分配器（60），使得能够在以流体动态浮动位置沿轴向方向（23）的活塞（22）的移动期间安装第一夹具双锥体（45.1）。 本发明还涉及一种用于操作所述锁定气缸（20）的方法。

The invention relates to a double acting locking cylinder (20). This comprises a cylinder (21) and a piston (22) by means of a fluid pressure medium in an axial direction (23) relative to the cylinder (21) movable, but rotationally fixed to the cylinder (21) is connected. The piston (22) is coupled with a spindle (35.2) via a non-self-locking thread (37). The spindle (35.2) is about a rotational axis (43) rotatable relative to the cylinder (21) and stored to the axial direction (23) axially displaceable. On the spindle (35.2), a first terminal double-cone body (45.1) is fixed to the cylinder (21) is a second clamping double-cone body (45.2) fixed. The first clamping double-cone body (45.1) is formed by a movement of the spindle (35.2) in the axial direction (23) with the second clamping-double-cone body (45.2) in two locking positions (46.2) self-locking clamped. The spindle (35.2) is supported on the first clamping double-cone body (45.1) at a first fluid and thrust bearing (53.1), which is acted upon via a first pressure-medium supply duct (54.1) with the fluid pressure medium and is at a second fluid and thrust bearing (53.2) is mounted, which via a second pressure medium inlet channel (54.2) can be acted upon with the fluid pressure medium. A flow divider (60) for dividing a main flow rate of the fluid pressure medium in a first part-volume flow and a second partial volume flow comprises a in the first pressure-medium inflow (54.1) opening into the first pressure-medium outlet channel (61.1) for the first part -Volumenstrom and in the second pressure medium inlet channel (54.2) which opens the second pressure-medium outlet channel (61.2) for the second part-volume flow. The flow divider (60) makes it possible to mount the first clamp double-cone body (45.1) during movement of the piston (22) in the axial direction (23) in a fluid-dynamic floating position. The invention also relates to a method for operating the locking cylinder (20).