Floating supporting device

The utility model discloses a floating supporting device. The device comprises a base, a supporting mechanism, a box body and a locking mechanism. The supporting mechanism comprises a supporting rod and a first spring, the locking mechanism comprises a locking block and a second spring, a mounting groove and a mounting cavity are formed in the box body, the upper portion of the mounting groove is communicated with the exterior, and the lower portion of the mounting groove is communicated with the mounting cavity. A groove is formed in the inner wall of the mounting groove, a flange is arranged in the middle of the supporting rod, the first spring is connected to the supporting rod in a sleeving mode and is fixedly arranged in the mounting groove through cooperation of the first flange and the groove, the locking mechanism is located in the mounting cavity, the locking block is located below the supporting rod, one end of the second spring is connected with the inner wall of the mounting cavity, and the other end of the second spring is connected with the side face of the locking block. The upper portion of the supporting rod stretches out of the box body, the supporting face at the top end of the supporting rod is a horizontal plane, the bottom face of the supporting rod and the top face of the locking block are a first slope and a second slope respectively, and the first slope and the second slope are matched. The supporting rod and the locking block are attached to each other through cooperation of the first slope and the second slope.