PROBLEM TO BE SOLVED: To compactly structure a golf practice base device.;SOLUTION: A golf practice base device 1 is structured by supporting a stage 11 with a lift unit 12. The lift unit 12 has a structure in which four lift devices 121 are connected in the form of an X in the vertical view on a base plate 122, independently elevating and lowering the four corners of the stage 11 with the respective lift devices 121. In each lift device 121, a Scott Russell mechanism is provided in which one end is linked to an electric cylinder that horizontally moves on a shaft 2121 and in which the other end supports the corner of the stage 11. The horizontal motion of the shaft 2121 is converted into a vertical motion for elevating and lowering the corner of the stage 11 by means of the Scott Russell mechanism.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2017,JPO&INPIT
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