Float-swing hydraulic support

A float-swing hydraulic support, comprising a top beam, a shield beam, an elevating frame, a base, an adjusting jack, an advancing unit, a scraper conveyor, and a hydraulic control valve block, wherein:

• the front end of the advancing unit is hinged to the scraper conveyor, and the rear end of the advancing unit is hinged to the base;
• two float hydraulic columns are arranged in parallel between the front part of the base and the top beam;
• the upper ends of the two float hydraulic columns are ball-hinged to the top beam, the lower ends of the two float hydraulic columns are ball-hinged to the base, and the rear part of the base is welded with the elevating frame as a whole;
• a telescopic beam unit is arranged at the front end of the top beam, a face guard unit is hinged to the front end of the telescopic beam unit, the rear end of the top beam is hinged with the shield beam together, and the lower end of the shield beam is hinged with the upper end of the elevating frame together;
• the upper end of the adjusting jack is hinged to the shield beam, and the lower end of the adjusting jack is hinged to the base;
• the top beam swings up and down around the hinge shaft between the hinge shaft and the shield beam under the action of the two float hydraulic columns;
• the shield beam swings up and down around the hinge shaft between the hinge shaft and the elevating frame under the action of the adjusting jack;
• a front bridge piece and a rear bridge piece are arranged on the base, a base raising unit is arranged on the front bridge piece, and a valve block support provided with hydraulic valve block is mounted on the rear bridge piece.