Hydraulic damping energy-absorbing device

Abstract

The invention relates to an energy-absorbing device with buffer action, more particularly an energy-absorbing device using liquid as damper. The device comprises a piston rod 1, a seal ring 2, a piston rod head 3, a guide head 4, a hydraulic cylinder 5 and damping holes 6. The piston rod head 3 is arranged at the lower end of the piston rod 1 and tightens the seal ring 2 sandwiched between the piston rod head 3 and the piston rod 1. The hydraulic cylinder 5 is immersed in the liquid. The guide head 4 is arranged in the upper part of the hydraulic cylinder 5 and engaged with the piston rod head 3. The damping holes 6 are provided on the side wall of the hydraulic cylinder 5 and distributed spirally. According to requirement for different input shock waveforms, the device can produce half-sine waves, triangular waves, toothed waves and other special waves and also can regulate the pulse width and peak value. The invention has the advantages of wide regulation range, continuous buffering and energy-absorption process, smooth curve of hock waveform, high accuracy of waveform simulation (up to 5%), simple structure, wide application range, and good versatility; and can meet the requirement for large-stroke buffering and energy-absorption of special equipment.

Description

technical field [0001] The invention relates to an energy-absorbing device with a buffering effect, in particular to an energy-absorbing device that absorbs various impact waveforms of impact energy through hydraulic damping. Background technique [0002] At present, the energy absorbing devices that absorb impact energy are roughly divided into mechanical energy absorbers, air damping energy absorbers, hydraulic energy absorbers, etc., among which mechanical energy absorbers mainly rely on the elastic deformation of rubber materials, or the permanent damage deformation of metal materials , in order to achieve the purpose of absorbing impact energy, the disadvantage is that the reusability of the energy-absorbing element is poor, the energy-absorbing element needs to be specially designed, and the waveform is not easy to adjust. Due to the high elasticity of the gas, the air damping energy absorber has poor adjustability and complicated structural design. As a typical and e...

AI Technical Summary

Problems solved by technology

Although the designs of various hydraulic energy absorbers are different and have their own characteristics, there are generally deficiencies such as complex structure, short stroke, poor versatility, and general waveform simulation accuracy.

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