Protective device

1 . A protective device comprising:

a plurality of protective bodies connected so as to separate an inside accommodating a movement path of a moving body moving in a predetermined direction from an outside and so as to be located sequentially and continuously in a moving direction of the moving body, the plurality of protective bodies including a first protective body and a second protective body, the first protective body located at a first end being connected to a predetermined end of an area to be protected, the second protective body located at a second end being connected to the moving body, the plurality of protective bodies being configured to be expanded and contracted as a whole by movement of the moving body, wherein:

the protective device is provided with:

a structural body having a groove that is located at the inside, has a top opening that opens upward in a vertical direction, and forms a flow path at the inside of the plurality of protective bodies, the structural body being arranged along the plurality of protective bodies below the protective bodies with a predetermined distance from lower end surfaces of the protective bodies or arranged along the plurality of protective bodies such that lower ends of the protective bodies are inserted in the groove through the top opening of the groove;

a nozzle connected to the structural body and configured to eject a liquid into the groove of the structural body, that is located at the inside; and

a liquid supply source configured to supply a pressurized liquid to the nozzle.

2 . The protective device according to claim 1 , wherein:

the structural body is arranged along the protective bodies so as to face to entire lower end surfaces of the protective bodies when the protective bodies are expanded;

the structural body has a side wall on at least an end portion of the structural body located on a first end side of the structural body to block the groove; and

the nozzle is arranged on the side wall of the structural body.

3 . The protective device according to claim 2 , wherein at least a portion of the side wall forms a downward inclined surface inclined downward and inward from the first end side to a second end side that is opposite side to the first end side.

4 . The protective device according to claim 1 , wherein the nozzle is arranged so as to eject the liquid downward in the vertical direction.

5 . The protective device according to claim 1 , wherein the groove of the structural body has a U-shaped or V-shaped cross section.

6 . The protective device according to claim 2 , wherein the nozzle is arranged so as to eject the liquid downward in the vertical direction.

7 . The protective device according to claim 3 , wherein the nozzle is arranged so as to eject the liquid downward in the vertical direction.

8 . The protective device according to claim 2 , wherein the groove of the structural body has a U-shaped or V-shaped cross section.

9 . The protective device according to claim 3 , wherein the groove of the structural body has a U-shaped or V-shaped cross section.

10 . The protective device according to claim 4 , wherein the groove of the structural body has a U-shaped or V-shaped cross section.

11 . The protective device according to claim 6 , wherein the groove of the structural body has a U-shaped or V-shaped cross section.

12 . The protective device according to claim 7 , wherein the groove of the structural body has a U-shaped or V-shaped cross section.