Abstract: A high-strength ring groove rivet includes a gun head assembly, a driving mechanism, a transmission mechanism, a power source and a control module arranged in a riveting tool shell. The transmission mechanism has a planetary roller lead screw shaft in coaxial driving connection with the clamping jaw of the gun head assembly, and is also in driving connection with the driving shaft of the driving mechanism through gears installed on the planetary roller lead screw shaft and the driving shaft of the driving mechanism respectively. The planetary roller lead screw is adopted as a component for converting rotary motion into linear motion, the output tension can reach 70 kN, and riveting installation of ring groove rivets with the diameter specification of 12 mm can be effectively completed.

Abstract: A coal gangue-based ecological restoration material, and a preparation method and an application thereof are provided. The coal gangue-based ecological restoration material is made from the following raw materials in parts by weight: 10 parts by weight of coal gangue; 0.5-1 parts by weight of an adhesive; 1-10 parts by weight of a plant fiber; and 1 part by weight of a fertilizer. The preparation method of the coal gangue-based ecological restoration material includes: primary crushing, primary heat treatment, primary cooling, secondary crushing, mixing and molding, secondary heat treatment, secondary cooling, mixing, and cooling and molding. The method uses the coal gangue as a main raw material to prepare the ecological restoration material, which can realize the effective utilization of the coal gangue and has good environmental protection, economic and social benefits.

Abstract: The present disclosure provides a system for processing data. A specific implementation is as follows: a control server acquires, based on a preset scheduling strategy, a second puller from the first puller, and a second task execution manager from the first task execution manager; and controls the second puller and the second task execution manager to perform an operation; a second puller acquires data of a to-be-processed message in a message queue; serializes the data of the to-be-processed message to obtain to-be-stored data; stores the to-be-stored data into a database to obtain stored first data; and adds a data state of the first data to the database; and a second task execution manager acquires second data from the database, and executes a task corresponding to the second data; and updates the data state based on a task execution result of the second data.