Simple jack device used for nuclear power station

The invention relates to a simple jack device used for a nuclear power station. The simple jack device comprises a nut base, a spiral ejector rod and a spherical ejector ball, wherein one end of the spiral ejector rod is connected with the nut base through threads, and the other end of the spiral ejector rod is provided with a spherical groove used for placing the spherical ejector ball. Compared with the prior art, the simple jack device has the advantages of being wide in use range, being safe and reliable, being convenient to maintain, being less in fees and the like. 本发明涉及种核电站用简易千斤顶装置，包括螺母底座、螺旋顶杆和球形顶珠，所述的螺旋顶杆端与螺母底座通过螺纹连接，另端设有用于放置球形顶珠的球形凹槽。与现有技术相比，本发明具有使用范围广、安全可靠、检修方便、节省费用等优点。