35results about How to "Easy to retrofit and upgrade" patented technology

The invention relates to a safety single-punch controller for a punch. The safety single-punch controller comprises a buffer head and a shell, as well as a hook plate, a middle plate, a sliding plate, a pressing plate, a swing rod, a lever, a locking block and a locking wheel which are arranged in the shell, wherein the swing rod is arranged on the shell through a pivot; the buffer head is arranged at the outer end of the swing rod; the inner end of the swing rod is linked with the hook plate; a moving plate hole is arranged in the middle of the sliding plate and internally provided with a moving plate with height being less than that of the moving plate hole; the middle of the moving plate is also provided with a sliding block hole that is internally provided with a sliding block; the inner end of the sliding block passes through the middle plate and the hook plate in sequence; a spring is horizontally arranged inside the body of the sliding block; the inner end of the spring is horizontally propped up inside the body of the sliding block and the outer end thereof is horizontally propped on an outer cover of the sliding block; the outer cover of the sliding block is fixedly connected with the moving plate; and the surface of the sliding block, contacted with a slopping surface of the middle plate, is also an inclined surface. The safety single-punch controller has compact structure, matching reliability of all components, small volume and prevention of faulty operation resulting to injure in work.

The present invention provides a multi-screen and multi-media interaction system based on C / S architecture. The system comprises a server and at least one client. The client comprises a user interaction interface and a message communication module, wherein the user interaction interface performs response to the user's operation, and the message communication module communicates with the server. The server is at least connected with a display screen, the server comprises the message communication module, a client management module, a screen management module, a multi-media management module anda remote operation control management module, wherein the message communication module is configured to communicate with the at least one client, the client management module manages the at least oneconnected client, the screen management module manages screen information, the multi-media management module manages the operation condition of the multi-media resources, and the remote operation control management module is configured to allow the at least one client to control the server. The system can perform collaboration when multiple people employ multiple machines to perform demonstration, and is high in flexibility.