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Light electric steering engine anti-impact base and shell based on gradient lattice structure

A technology of dot matrix structure and electric steering gear, which is applied in the direction of rudder steering, etc., can solve the problems of increased structural wear, high acceleration amplitude, and complex frequency components, so as to achieve vibration reduction and noise reduction, improve usability, The effect of simple process

Pending Publication Date: 2022-05-31
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the rudder surface is automatically deployed, a huge impact force will be generated. Under the action of the impact load, the internal structure of the electric steering gear will change to a certain extent, which will increase the wear of the structure, resulting in the vibration of the system structure gap
The equipment shock environment is a complex oscillation type shock, its main characteristics are: short duration, high acceleration amplitude, and complex frequency components

Method used

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  • Light electric steering engine anti-impact base and shell based on gradient lattice structure
  • Light electric steering engine anti-impact base and shell based on gradient lattice structure
  • Light electric steering engine anti-impact base and shell based on gradient lattice structure

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Experimental program
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Effect test

Embodiment 1

[0027] The side plate of the light-weight and energy-absorbing electric steering gear anti-shock base based on the gradient lattice structure of this embodiment is made of a gradient body-centered cubic lattice structure; the gradient body-centered cubic lattice structure is made of a body-centered cubic lattice The unit cells are periodically arranged in space; the body-centered cubic lattice structure is a truss structure that simulates the topological configuration of the crystal molecular body structure with uniform pillars of equal cross-section. The internal constituent elements are eight rods with length, and the eight rods respectively connect the body center point with the eight vertices, and the body-centered cubic lattice structure is finally formed through the periodic arrangement of the body-centered cubic lattice unit cells; The unit cell size of the structure is 4×4×4mm, the diameter of the unit cell rod varies from 0.3 to 2.2mm, the thickness is determined accor...

Embodiment 2

[0030] The whole of the lightweight electric steering gear housing with vibration and noise reduction based on the variant gradient lattice structure of this embodiment is made of the variant gradient lattice structure; the variant gradient lattice structure is based on the bearing and vibration and noise reduction. It is required to first determine the relative density of the structure, and calculate the rod diameter according to the geometric relationship. In this embodiment, the ratio of the rod diameter to the side length of the standard BCC unit cell is 1:5. Next, the main direction of the gradient is determined. In this embodiment, the normal direction of the casing is used as the main direction of the gradient, and along this direction, the structure is gradientd from the inside to the outside. The structure specifically includes a plurality of variant gradient unit cells that are repeatedly arranged and interconnected; the variant gradient unit cell column includes a pl...

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Abstract

The invention discloses a lightweight electric steering engine anti-impact base based on a gradient lattice structure. The lightweight electric steering engine anti-impact base is wholly or locally made of the gradient lattice structure. The gradient lattice structure is formed by periodically arranging lattice unit cells in a space; each lattice unit cell comprises nodes distributed in a space and rod bodies connected between the nodes; the diameter of the rod body in the gradient lattice structure continuously changes from small to large according to a linear rule in the construction direction. The gradient lattice structure is applied to the electric steering engine bottom plate, the mass of the steering engine bottom plate is reduced, meanwhile, external impact can be effectively resisted, and vibration damage in the structure is reduced.

Description

technical field [0001] The invention belongs to the technical field of underwater vehicles, in particular to a light-weight electric steering gear shock-resistant base and shell based on a gradient lattice structure that can passively absorb energy to achieve shock resistance. Background technique [0002] In order to meet the requirements of modern military combat stealth, maneuverability and launch platform adaptability, electric steering gear with folding rudder surface has gradually become a new design trend. After the rudder surface is automatically unfolded, a huge impact force will be generated. Under the action of the impact load, the stress state of the internal structure of the electric steering gear will change to a certain extent, which will increase the wear of the structure, resulting in the jitter phenomenon caused by the gap of the system structure. The equipment shock environment is a complex oscillating shock, and its main characteristics are: short duratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H25/26
CPCB63H25/26
Inventor 柏龙陈晓红孙园喜周晓霞
Owner CHONGQING UNIV
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