2results about How to "Conditions affecting normal use" patented technology

The utility model discloses a tapered roller bearing with good sealing property, which belongs to the technical field of bearings, and comprises a bearing body, a sealing device is arranged on one side of the bearing body, the sealing device comprises a sealing cover, the sealing cover is sleeved on the bearing body, the sealing cover is arranged between an inner ring and an outer ring of the bearing body, and the sealing cover is arranged on the bearing body. The tapered roller bearing with the good sealing performance comprises a bearing body, a sealing device is arranged in the bearing body, a circular hole block is fixedly connected to one side of the sealing cover, a bolt is arranged in the circular hole block, and a threaded groove is formed in one side of an inner ring of the bearing body. The situation that outside sundries fall into the bearing body through a gap between the inner ring and the outer ring, so that all parts of the bearing body are blocked or friction is increased, and the use performance of the bearing body is affected is reduced, the sealing performance of the bearing body is improved, and the service life of the bearing body is prolonged.

The utility model relates to the technical field of printed circuit boards, in particular to a printed circuit board drying device. The drying device comprises a drying box, a box door is rotationally installed on the drying box, two supporting rods are installed in an inner cavity of the drying box, the arc faces of the two supporting rods are connected with a movable plate in a sliding mode, the surface of the movable plate is connected with a containing plate in a sliding mode, and two sliding grooves are formed in the inner cavity of the drying box; the inner wall of the drying box sliding groove is slidably connected with a sliding block, the sliding block is fixedly connected with the side wall of a movable plate, two rows of adjusting grooves are formed in an inner cavity of the drying box, two supporting plates are fixedly connected to the lower surface of the movable plate, sliding rods are slidably inserted into the supporting plates, one end of each sliding rod is fixedly connected with a pulling plate, and the other end of each sliding rod is fixedly connected with a sliding block. And the arc surface of the sliding rod is in sliding connection with the drying box adjusting groove. The problems that the drying efficiency is low, the drying time is long, the production efficiency is affected, drying is not uniform, part of circuit boards are dried insufficiently, and the product quality is affected are solved.