PROBLEM TO BE SOLVED: To provide a lifting device in which a lifting member does not move from a predetermined position even when a fluid is discharged from a valve when an excessive fluid is supplied, in a lifting device using a fluid.SOLUTION: A lifting device 1 includes: a fluid supply source a drive mechanism 3 including a drive part 31 reciprocating and driving by inflow and discharge of a fluid a lifting member 4 moving upward/downward a supply passage 5 for conveying a fluid a discharge passage 6 for discharging the fluid a discharge valve 7 for discharging the fluid to the discharge passage 6 and a restriction mechanism 8 for restricting the movement of the lifting member 4 by supporting the lifting member 4. The restriction mechanism 8 includes: a restriction member 81 moving between a restriction position for restricting the lowering of the lifting member 4 and a retreat position for allowing the lifting member 4 to move from the lower side to the upper side and a release member 84 for moving the restriction member 81 to the retreat position. The lifting member 4 has a part 42a to be engaged which is engaged with the restriction member 81 and a pressing part 42b for moving the restriction member 81 to the retreat position.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2019,JPO&INPIT【課題】流体を用いた昇降装置において、過剰な流体が供給された際に弁から流体を排出しても、昇降部材が所定の位置から移動しない昇降装置を提供すること。【解決手段】本発明の昇降装置1は、流体供給源と、流体の流入排出によって往復駆動する駆動部31を有する駆動機構3と、昇降移動する昇降部材4と、流体を搬送する供給路5と、流体を排出する排出路6と、流体を排出路6に排出する排出弁7と、昇降部材4を支持することにより昇降部材4の移動を規制する規制機構8とを備え、規制機構8は、昇降部材4の降下を規制する規制位置と昇降部材4が下側から上側へと移動するのを許容する退避位置との間を移動する規制部材81と、規制部材81を退避位置へと移動させる解除部材84とを有し、昇降部材4は、規制部材81と係合する被係合部42aと、規制部材81を退避位置へと移動させる押圧部42bとを有する。【選択図】図5
