Abstract: The present disclosure discloses an intelligent control and monitoring system for bolt fastening load and a use method thereof. The system includes a bolt-washer combination; a fastening detection terminal configured to monitor tightness of a bolt, upload loosening risk information, and send onsite assembly information and onsite mounting information of the bolt; a smart electric wrench configured to pre-fasten the bolt based on the onsite assembly information of the bolt, and transmit the mounting information of the bolt; and a cloud platform configured to plan, take statistics, and store the mounting information of the bolt, confirm and monitor the mounting information of the bolt. According to the present disclosure, pre-fastening force to the bolt is more accurately controlled, a function of matching an IP address with a physical mounting address is provided, so that physical positioning can be quickly performed for a mounted fastening detection element.

Abstract: A horizontally arranged six-degree-of-freedom constant-stiffness mechanism is provided, and includes an upper platform, a bottom plate, three composite spherical hinges, spherical hinges, support rods, guide rail slider assemblies, and six electromagnetic adjustable stiffness units. Two ends of a shaft on which a permanent magnet is fixed in each electromagnetic adjustable stiffness unit are fixed to the bottom plate via shaft supports. Axially moving housings of electromagnetic adjustable stiffness units are fixed on sliders of the guide rail slider assemblies via slider backing plates respectively. Guide rail slider assembles are fixed on the bottom plate. Tops of the housings are mounted with the spherical hinges respectively. A bottom of the upper platform is uniformly mounted with the composite spherical hinges. One end of each support rod is threadedly connected to a corresponding one of the spherical hinges, and another end is connected with a corresponding one of composite spherical hinges.

Abstract: A horizontally arranged six-degree-of-freedom constant-stiffness mechanism is provided, and includes an upper platform, a bottom plate, three composite spherical hinges, spherical hinges, support rods, guide rail slider assemblies, and six electromagnetic adjustable stiffness units. Two ends of a shaft on which a permanent magnet is fixed in each electromagnetic adjustable stiffness unit are fixed to the bottom plate via shaft supports. Axially moving housings of electromagnetic adjustable stiffness units are fixed on sliders of the guide rail slider assemblies via slider backing plates respectively. Guide rail slider assembles are fixed on the bottom plate. Tops of the housings are mounted with the spherical hinges respectively. A bottom of the upper platform is uniformly mounted with the composite spherical hinges. One end of each support rod is threadedly connected to a corresponding one of the spherical hinges, and another end is connected with a corresponding one of composite spherical hinges.