Circular section spring mechanism with adjustable rigidity

Abstract

A circular section spring mechanism with the adjustable rigidity comprises a pipe body, a circular section spring, a pipe sleeve, a tightening screw and a regulating screw. the outer wall of the pipe body is provided with an outer thread, the inner wall of the pipe body is provided with an inner thread, the regulating screw is screwed in the inner thread to form a first screw pair, and the circular section spring is screwed in the outer thread to form a second screw pair; the pipe sleeve is installed outside the pipe body and provided with a threaded hole, and the tightening screw is installed in the threaded hole; the circular section spring is a cylindrical equal-pitch spiral spring; the thread pitch of the inner thread is equal to that of the outer thread; the lead angle of the inner thread and the outer thread of the pipe body is smaller than the smallest equivalent friction angle in the first screw pair and the second screw pair; the rigidity of the circular section spring can be adjusted within a designed range. According to the circular section spring mechanism with the adjustable rigidity, the structure is simple, larger load can be borne, the stability is high, the rigidity of the spring mechanism can be adjusted under the loading condition, the rigidity adjustment process is simple, the adjusting time is greatly saved, and the adjusting efficiency of a sample mechanism is improved.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a circular section spring mechanism with adjustable stiffness. Background technique [0002] Springs with adjustable stiffness are in great demand in engineering practices such as prototype debugging and modal analysis to determine the optimal stiffness of a spring in the system to meet design requirements. In order to achieve the purpose of adjusting the spring stiffness, there are three main methods widely used at present: one is to produce springs with various stiffnesses until a suitable stiffness is found. This method is costly and takes a long time to debug the prototype. The second is to use the electric control or air control system to adjust the action part of the spring. This kind of system has a complex structure, large volume, is not easy to install and use, and has high requirements on the surrounding environment; the third is to realize it through electromagnetic springs. , ...

AI Technical Summary

Problems solved by technology

In order to achieve the purpose of adjusting the spring stiffness, there are three main methods widely used at present: one is to produce springs with various stiffnesses until a suitable stiffness is found. This method is costly and takes a long time to debug the prototype. The second is to use the electric control or air control system to adjust the action part of the spring. This kind of system has a complex structure, large volume, is not easy to install and use, and has high requirements on the surrounding environment; the third is to realize it through electromagnetic springs. , this kind of spring has a small load capacity and cannot meet the engineering needs

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