Abstract: The present disclosure discloses a rolling ring shrink fitting tool for rotary equipment, including a lifting frame; a movement slot is formed in a bottom surface of a top of the lifting frame; an output end of a first motor is connected with a main gear; guide rollers are embedded in a lifting seat through bearings; shrink fitting plates are two semicircular structures; lifting lugs are welded on outer sides of the shrink fitting plates; tooth rings are arranged outside the shrink fitting plates; stop rods are fixed on inner walls of the tooth rings; supporting screw rods are embedded at sunken positions on inner walls of the shrink fitting plates through bearings.

Abstract: The present disclosure discloses a rolling ring shrink fitting tool for rotary equipment, including a lifting frame; a movement slot is formed in a bottom surface of a top of the lifting frame; an output end of a first motor is connected with a main gear; guide rollers are embedded in a lifting seat through bearings; shrink fitting plates are two semicircular structures; lifting lugs are welded on outer sides of the shrink fitting plates; tooth rings are arranged outside the shrink fitting plates; stop rods are fixed on inner walls of the tooth rings; supporting screw rods are embedded at sunken positions on inner walls of the shrink fitting plates through bearings.

Abstract: A novel type of water-soluble isatin derivatives, and manufacturing method and application thereof. An isatin derivative comprising a phenolic hydroxy group is used as the substrates. A dimethylaminomethylene group is introduced to an ortho position of the phenolic hydroxy group to significantly improve the water solubility of a class of compounds provided by the invention. An antitumor activity study showed that the activity of the class of compounds was not reduced, and even improved. The class of compounds has great prospects for applications in developing an antitumor pharmaceutical product.

Abstract: A novel type of water-soluble isatin derivatives, and manufacturing method and application thereof. An isatin derivative comprising a phenolic hydroxy group is used as the substrates. A dimethylaminomethylene group is introduced to an ortho position of the phenolic hydroxy group to significantly improve the water solubility of a class of compounds provided by the invention. An antitumor activity study showed that the activity of the class of compounds was not reduced, and even improved. The class of compounds has great prospects for applications in developing an antitumor pharmaceutical product.