2results about How to "Improve bending deformation ability" patented technology

This utility model discloses a composite reinforced flexible polyethylene composite pipe, relating to the field of composite pipes. It includes an outer polyethylene pipe and an inner polyethylene pipe, with the inner pipe located inside the outer polyethylene pipe. Multiple skeleton structures are fixedly installed between the outer and inner polyethylene pipes, and connecting rings are provided between each skeleton structure. This utility model can form a radially uniformly distributed rigid support, effectively suppressing radial deformation of the pipe. The steel frame plates are movably connected by flexible connecting frames, allowing the steel frame plates to deform collaboratively when the pipe bends. While ensuring the strength of the rigid support, it also improves the bending deformation capacity of the composite pipe. It allows the skeleton to slip slightly axially when the pipe is under pressure, dispersing local stress and avoiding brittle fracture. While increasing the support rigidity of the steel frame plates, it also allows the composite pipe to undergo local torsion, enabling the polyethylene composite pipe to form a dynamic balance mechanism between controllable deformation and rigid support.

This invention relates to a stretchable flexible continuum and a continuum surgical robot. The flexible continuum has a cylindrical structure with multiple V-shaped grooves evenly spaced along both generatrix A and generatrix B in the circumferential direction. The V-shaped grooves on generatrix A and generatrix B are staggered along the central axis of the continuum. The depth of each V-shaped groove is greater than half the diameter of the continuum. Two arc-shaped notches are respectively provided on the two groove beams corresponding to the openings of the V-shaped grooves. The two groove beams are connected at the bottom of the V-shaped grooves by an arc-shaped connecting part. Except for the V-shaped grooves connected to the joint head and tail of the continuum, the two groove beams in any V-shaped groove have the same thickness. Through a specific groove design, the flexible continuum of this invention can achieve a large range of flexible bending deformation while also possessing high stretching performance.