Hydraulic prop prevents device of restricting

The utility model discloses a hydraulic prop prevents device of restricting, including hydraulic prop, the styletable is installed on hydraulic prop's top, the cassette is installed on the top of styletable, the back timber is installed on the top of cassette, the link is installed in the bottom left side of back timber, the bottom of link has articulated the knot, wire rope is installed on the right side of ring. This hydraulic prop prevents device of restricting, pass through wire rope, hang the cooperation of knot and link, the sliding sleeve moves down and entangles the pin, prevent that the pin from opening, in the time of need demolising hydraulic prop, upwards promote the sliding sleeve, it can take off from the link hanging to detain to pull the pin left, wire rope connects back timber and hydraulic prop, at hydraulic prop because become flexible in the time of to fall down, wire rope can prevent that hydraulic prop from falling down to cause the accident, wire rope is durablewith the connection of ha