Hydraulic device with vacuum box

The utility model discloses a hydraulic device with a vacuum box, which comprises a fixed module and a cylinder body, the fixed module is fixedly connected with the cylinder body through a guide pillar, a movable telescopic rod is arranged at the front end of the cylinder body, a workbench component is arranged at the front end of the telescopic rod, and a barrel is fixedly arranged at the lower end of the fixed module. An upper pressing plate is fixedly arranged at the lower end of the barrel, the outer ring of the upper pressing plate is sleeved with a vacuum box, the lower end face of the vacuum box and the upper end face of the workbench assembly can be connected in a sealed and attached mode through a first oil cylinder, so that a sealed space is formed in the vacuum box, and the vacuum box is connected with a vacuum pump. The utility model has the advantages that the design is novel, the structure is reasonable, the outer ring of the upper pressing plate is sleeved with the vacuum box, a sealed space is