Hydraulic damping energy-absorbing device

A technology of hydraulic damping and energy absorbing device, which is applied to liquid shock absorbers, springs, shock absorbers, etc., can solve the problems of general waveform simulation accuracy, poor versatility and complex structure, and achieves good adjustability and no Environmental pollution, good repeatability

Active Publication Date: 2008-07-02
CHINA HELICOPTER RES & DEV INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Hydraulic damping energy-absorbing device
  • Hydraulic damping energy-absorbing device
  • Hydraulic damping energy-absorbing device

Examples

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Embodiment

[0026] Taking the simulated triangular waveform as an example below, the present invention will be further described, see figure 2 , The inner diameter of the cylinder is 245mm, the outer diameter is 360mm, the effective length of the hydraulic energy-absorbing section, that is, the side opening section, is 1500mm, the maximum acceleration provided by the device is 60g, and the time width of the shock waveform is 30ms to 300ms. according to Figure 7 , Figure 8 , Figure 9 According to the input requirements of the triangular waveform, calculate the opening area of ​​the damping hole 6 on the side wall of the hydraulic cylinder block 5 and the distribution gradient of the hole, see Figure 10 , and then use the plug 9 to adjust the size and number of damping holes on the cylinder body 5. The aperture of the damping holes in this embodiment is 32mm, and the number of damping holes is 100. The specific distribution is divided into 45 rows from top to bottom. There are 8 hol...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/16F16F9/34F16F9/22F16F9/28
Inventor 廖良全赵翔刘续兴
Owner CHINA HELICOPTER RES & DEV INST
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