Stiffness adjustable large flexible torsion spring for steering gear loading

Abstract

The invention provides a large flexible torsion spring with adjustable stiffness for steering gear loading, which includes a torque input interface, a torque output interface, a torsion plate assembly and an isolation frame assembly; the torsion plate assembly includes M elastic elements, and M is greater than 1 is a positive integer, the spacer assembly includes N spacers, and N is a positive integer, the spacer is a ring-shaped structure, and there are Q through holes uniformly opened on the ring-shaped end face along the circumferential direction, and Q is not less than M Positive integer; M elastic elements are evenly distributed along the circumferential direction, and each elastic element passes through the through holes at the corresponding positions on the N spacers in turn, and the two ends of the torsion plate assembly are respectively nested with the torque input interface and the torque output interface; the input torque The torque input interface is transmitted to the torque output interface through the torsion plate assembly. In the present invention, the elastic elements in the torsion plate assembly are evenly distributed along the circumferential direction, so that the torsion spring has the characteristics of positive and negative stiffness symmetry, and the setting of the spacer enables the torsion spring to achieve a large torsion angle in the linear range.

Description

technical field [0001] The invention belongs to the technical field of torsion springs, in particular to a large flexible torsion spring with adjustable stiffness for loading a steering gear. Background technique [0002] Torsion springs are widely used in the fields of robots, precision instruments, material testing, aviation equipment, etc., and mainly realize functions such as torque transmission, energy storage, and component fastening. The traditional torsion spring is a spiral structure and a clockwork structure. The adjustment of the torsional stiffness is achieved by changing the spring material, changing the structural size or connecting in series and parallel, but it is difficult to achieve the characteristic symmetry of the forward and reverse strokes. The maximum permissible torsional deformation of traditional torsion springs generally does not exceed ±15%, which is not suitable for occasions that require large torsion angles (greater than ±40%). Contents of t...

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Problems solved by technology

[0003] In view of this, the present invention aims to propose a large flexible torsion spring with adjustable stiffness for steering gear loading, so as to solve the asymmetry of forward and reverse characteristics of traditional torsion springs in the field of aircraft steering gear performance testing and simulation, while the torsion bar has the largest The allowable torsion angle is small, not suitable for large torsion angles

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