A strut built-in vibration-absorbing device

Abstract

The invention belongs to the field of design of structural vibration attenuation / vibration isolation, and particularly relates to a vibration absorption device. The vibration absorption device comprises corrugated spring plates (1), a mass vibrator (2), a shell (3) and joints (4). The mass vibrator (2) is a cylinder, and small bosses are arranged on two end faces of the cylinder. The shell (3) is a cylinder with the same height as the mass vibrator (2). The outer diameter of the shell (3) is 1-3mm larger than that of the mass vibrator (2). The shell (3) sleeves the mass vibrator (2). The corrugated spring plates (1) are symmetrically mounted at two ends of each of the mass vibrator (2) and the shell (3). The outer edges of the corrugated spring plates (1) are disposed on the shell (3). The corrugated spring plates (1) are fixedly connected with the small bosses of the mass vibrator (2). The joints (4) are symmetrically mounted at two ends of the shell (3). The vibration absorption device is compact in structure, easy to mount, stable in performance, safe and reliable. The corrugated spring plates designed in the vibration absorption device has high lateral rigidity and axial linear rigidity, guarantees stability of a spring mass system in the motion direction, and is suitable for being mounted and used at any angles.

Description

technical field [0001] The invention belongs to the field of structural vibration reduction / vibration isolation design, in particular to a vibration absorbing device. Background technique [0002] Anti-resonance principle for vibration reduction is a classic and mature design method, mainly for single frequency vibration reduction / vibration isolation design. For the anti-resonance and vibration reduction design of helicopters, the main configurations are mass-cantilever beam type, mass-spring type, etc. At present, domestic helicopters still use imitated foreign products, and lack independent innovative products. During the actual use, it was found that the quality-cantilever vibration absorber requires a large installation space, is easily invalidated by the stiffness of the connection support, and the stress concentration at the connection installation part makes it inconvenient to adjust on site. The mass-spring type requires a large installation space, and the lateral s...

Images