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: An obtaining method and apparatus for a block group header, a storage medium, and an electronic device are disclosed. The method may include, performing a determination as to whether a target node in a blockchain system meets a preset condition, where the preset condition is indicative of at least one of, the target node receiving a block group header but failing to receive a preset number of legal blocks, or the target node failing to receive the block group header; identifying a cause of an event that the target node fails to receive the block group header, in response to the determination that the target node fails to receive the block group header, where the cause of the event comprises at least one of, the target node failing to receive the block group header, or the blockchain system failing to generate the block group header; and determining a method for acquiring by the target node, the block group header that fails to be received, according to the cause of the event.

Abstract: An example for determining consensus by Parallel Proof of Voting (PPoV) in a consortium blockchain includes causing each bookkeeping node to generate and publish a block to a consortium blockchain network. After collecting all the block generated in the previous step, the consortium node votes send a total voting message (the hash value of each block, as well as the agreed opinion and signature) to the leader node. The leader node counts the voting results and random selects the next leader node, which publishes the block group header to the consortium blockchain network. When a blockchain node receives the block generated by the bookkeeping nodes and the block group header generated by the leader node, it will store them in the database as a block group.

Abstract: A method and system for re-connecting an unintentionally off-line web-game is disclosed. The system comprises a user electronic device, a web, and a web-game server. When the user electronic device unexpectedly withdraws from the web-game because of communicated-disruption of the web, the web-game server continues the web-game immediately in accordance with the highest benefit of the user. After the user electronic device re-logs into the web-game server, the web-game sever permits the user electronic device to continue the web-game if the user electronic device is unexpectedly withdrawn from the web-game for less than a timeout threshold.