Wire-driven structure joint capable of realizing bending motion decoupling

Abstract

The invention discloses a wire-driven structure joint capable of realizing bending motion decoupling. The wire-driven structure joint comprises at least two wire-driven joints connected end to end, afirst wire and a second wire, wherein the first wire and the second wire are connected with the wire-driven joints in series; the wire-driven joints comprise base discs, connecting rods and tail end discs; the base discs and the connecting rods are connected to form first rotating pairs; rotating axes of the first rotating pairs are overlapped with the end surfaces of the base discs; the tail enddiscs and the connecting rods are connected to form second rotating pairs; rotating axes of the second rotating pairs are overlapped with the end surfaces of the tail end discs; the first wire penetrates through all the wire-driven joints in sequence, and drives the second rotating pairs to rotate; and the second wire penetrates through all the wire-driven joints in sequence, and drives the firstrotating pairs to rotate. The wire-driven structure joint can realize the bending decoupling motion in two degrees of freedom, can effectively simplify the robot kinematics, and reduces the control difficulty.

Description

technical field [0001] The invention relates to the field of robots, in particular to a wire-driven structural section capable of decoupling bending motion. Background technique [0002] Since the wire-driven serpentine arm robot can realize multi-degree-of-freedom bending motion, it can work flexibly in a complex environment with limited height, and is widely used in maintenance inspection, minimally invasive surgery and other fields. In recent years, the types of joints that can be used to construct wire-driven snake-arm robots are rich and diverse. According to the joint degrees of freedom, they can be divided into single-degree-of-freedom or two-degree-of-freedom. The common single-degree-of-freedom joints include single-degree-of-freedom fixed-axis rotary joints, Plate and cylindrical rolling joints, etc.; two-degree-of-freedom joints include axis intersecting type (universal joint / ball joint) fixed axis rotating joint, axis non-intersecting fixed axis rotating joint, f...

AI Technical Summary

Problems solved by technology

The above-mentioned document discloses a mechanical arm composed of an end disk, a base disk and a spacer disk. The mechanical arm has two degrees of freedom and can be driven by a rod. However, during the bending process of the driving mechanical arm, the two degrees of freedom There is coupling in the bending direction of 1 degree, when bending the rod in one direction, the rod in the other direction will also bend, which will increase the difficulty of control

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