Adjustable neutron tube fixing device and method

The invention relates to an adjustable neutron tube fixing device and method. The distance between a movable disc and a fixed disc is adjusted by turning a small lead screw, the mutual distances among three clamping claws installed on the fixed disc and the movable disc respectively are simultaneously changed by turning a shifting rod, a neutron tube extends into a space formed by the six claws, the shifting rod is loosened, and the clamping claws fix the neutron tube under the effects of a torsion spring. After the neutron tube is fixed well, the relative position of the neutron tube and an instrument device needing the neutron tube is adjusted by turning the lead screw, so that the neutron tube is located at the best usage position. 本发明涉及种可调式中子管固定装置及方法。通过旋转小丝杆来带调节活动盘与固定盘之间的距离，通过拨动拨杆同时改变固定盘及活动盘上各自安装的三个卡爪之间的相互距离，将中子管伸入留个卡爪形成的空间中后，松开拨杆，在扭转弹簧的作用下，卡爪将中子管固定。固定好中子管后，通过旋转丝杆，调整中子管与需要使用中子管的仪器设备的相对位置，使中子管处于最佳的使用位置。