Patent ID: 11879514
Assignee: SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A compound impact-resistant device, comprising an inner cylinder, a first pressure sensor and an outer cylinder, wherein the inner cylinder is connected to an inner bottom surface of the outer cylinder, and the first pressure sensor is placed in the outer cylinder and connected to a bottom of the inner cylinder;
an inner cavity of the inner cylinder is sequentially connected to a magnetorheological damper, a spiral valve element, a floating piston and a spring from bottom to top; and an inner top surface of the outer cylinder is connected to a piston rod, a bottom end of the piston rod penetrates a top of the inner cylinder, the spring and the floating piston to be connected to the spiral valve element, and a portion below the spiral valve element is filled with hydraulic oil;
wherein the outer cylinder comprises a top cover, a crushing member and a base which are connected in sequence from top to bottom, and an upper end and a lower end of the crushing member are inserted into recesses provided in the top cover and the base respectively; wherein the crushing member is in a hollowed structure, is provided with multi-layered staggered transverse openings and the crushing member is adapted for supporting, recessing and energy absorbing;
wherein a surface of the spiral valve element is provided with a plurality of circles of spiral recesses.