CN110849217A

CN110849217A - Bottom anti-mine buffering energy absorption mechanism of armored vehicle

Info

Publication number: CN110849217A
Application number: CN201911076015.5A
Authority: CN
Inventors: 刘廷军; 马胜; 唐宁
Original assignee: Chongqing Changan Industry Group Co Ltd
Current assignee: Chongqing Changan Industry Group Co Ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-02-28

Abstract

A buffering energy-absorbing mechanism for preventing the bottom of an armored vehicle from being damaged by the mine belongs to the field of lightning protection of armored and tactical vehicles, and mainly has a transition structure for connecting a bottom lightning protection module with a vehicle body or a crossbeam, and comprises a supporting framework (1), an energy absorption layer (2), a vibration reduction layer (3) and a mounting nut (4); the invention utilizes the action principle of the landmine explosion shock wave, and can greatly buffer and attenuate energy transferred to the interior of the vehicle in the explosion impact process through explosion simulation analysis. The buffering energy absorption mechanism is designed into a multilayer structure, different materials are selected for each layer, and the combination of different materials can meet the normal function of a vehicle under the normal working condition, play a role in buffering and attenuating impact energy in explosion and effectively improve the battlefield survival rate of fighters.

Description

Bottom anti-mine buffering energy absorption mechanism of armored vehicle

Technical Field

The invention relates to the field of land mine prevention of armored and tactical vehicles, in particular to a lightning protection function of the bottom of a vehicle body of the armored and tactical vehicle.

Background

The world is in the key period of the accelerated transformation and depth adjustment of the international system, and local conflict and boundary dispute occur at any time. The armor and tactical vehicle can greatly improve the action and maneuverability of troops and simultaneously urge the vigorous development of anti-action and fight.

The landmine and the simple explosion device are used as an effective anti-maneuvering means and play an important role in the wars of the previous times. At present, most armored and tactical vehicles do not have bottom lightning protection capability, and even if a lightning protection module is additionally arranged at the bottom of part of armored vehicles, the lightning protection module is in rigid connection with a vehicle body (or a crossbeam), energy generated by a mine is rigidly transmitted to the vehicle body (or the crossbeam) in an explosive impact process, so that passengers in the vehicle are impacted and damaged by large energy, the battlefield survival rate of fighters is low, and the casualties are serious. Along with the more and more importance of protection of each country to the fighter, it is necessary to develop a bottom anti-thunder buffering energy absorption mechanism of the armored vehicle, and the body and the bottom anti-thunder module are connected, so that the explosion shock wave can be effectively absorbed and attenuated, the problem that the bottom of the armored vehicle and the tactical vehicle is weak in lightning protection capacity is solved, the battlefield survival rate of the fighter is improved, and the combat efficiency is improved.

Disclosure of Invention

Aiming at the problem that the bottom of the prior armored and tactical vehicle is rigidly and upwardly transmitted by explosion shock waves when being impacted by explosion, the invention mainly designs and develops a buffering and energy-absorbing mechanism which is in transition connection with a vehicle body or a crossbeam and a bottom lightning protection module.

The invention relates to a bottom anti-thunder buffering energy absorption mechanism of an armored vehicle, which consists of a supporting framework 1, an energy absorption layer 2, a vibration reduction layer 3 and a mounting nut 4;

support chassis 1 is formed by the cutting of square steel pipe, and every mounting point evolution square slotted hole, four round chamfer angles in square hole, square hole mainly are the cushioning effect when receiving the explosion impact force, and the atress is even when the fillet mainly is the explosion impact, avoids stress concentration to lead to local tearing. Mounting holes are formed below the supporting framework, and mounting nuts can be welded on corresponding holes of the supporting framework;

the energy absorption layer 2 is filled with foamed aluminum or honeycomb aluminum, the density of the energy absorption layer can be determined according to the lightning protection grade, and the density is properly increased when the lightning protection grade is higher;

the damping layer 3 is composed of a polyurethane plate, the thickness is generally 6-12 mm, the thickness can be determined according to the lightning protection grade, and the thickness is properly increased when the lightning protection grade is higher;

the invention utilizes the action principle of the landmine explosion shock wave, and can greatly buffer and attenuate energy transferred to the interior of the vehicle in the explosion impact process through explosion simulation analysis. The buffering energy-absorbing mechanism is designed into a multilayer structure, each layer is made of different materials, and the combination of the different materials can realize the normal function of the vehicle under the normal working condition and play a role in buffering and attenuating impact energy in explosion.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic view of the support frame 1 and mounting nut 4;

FIG. 3 is a schematic view of the energy absorbing layer 2 and the vibration damping layer 3;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is an auxiliary exploded view of the present invention;

in fig. 1 to 5: 1 supporting framework, 2 energy absorbing layers, 3 vibration absorbing layers and 4 mounting nuts.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1-2, the buffering and energy absorbing mechanism of the invention is composed of a supporting framework 1, an energy absorbing layer 2, a vibration damping layer 3 and a mounting nut 4;

support chassis 1 is formed by the cutting of square steel pipe, and every mounting point evolution square slotted hole, four round chamfer angles in square hole, square hole mainly are the cushioning effect when receiving the explosion impact force, and the atress is even when the fillet mainly is the explosion impact, avoids stress concentration to lead to local tearing. And mounting holes are formed below the supporting framework, and mounting nuts can be welded on the corresponding holes of the supporting framework.

The energy absorption layer 2 is filled with foamed aluminum or honeycomb aluminum, the density of the energy absorption layer can be determined according to the lightning protection grade, and the density is increased properly when the lightning protection grade is higher.

The damping layer 3 is composed of a polyurethane plate, the thickness is generally 6-12 mm, the thickness can be determined according to the lightning protection grade, and the higher the lightning protection grade is, the thickness is increased properly.

The overall dimension of the buffering energy absorption mechanism can be adjusted according to actual needs.

Claims

1. The utility model provides an armoured vehicle bottom prevents ground thunder buffering energy-absorbing mechanism comprises braced frame (1), energy-absorbing layer (2), damping layer (3), mounting nut (4), characterized by: the energy absorption layer (2) is filled in the support framework (1), and the vibration reduction layer (3) is positioned below the support framework (1); the upper mounting surface of the whole buffering energy-absorbing mechanism is connected to a vehicle body or a crossbeam, the lower mounting surface is connected with a bottom lightning protection module, and the buffering energy-absorbing mechanism plays a role in bearing the upper and lower sides and absorbing and attenuating the transmission of explosion shock waves to the vehicle body in the explosion impact process, so that the explosion shock waves are prevented from being rigidly transmitted to passengers in the vehicle through the lightning protection module; the support framework (1) is generally formed by cutting a 20# or 35# square steel pipe, the thickness of the steel pipe can be determined according to the lightning protection grade and the weight of a lightning protection module, and the thickness of the steel pipe is generally 4-8 mm; the filling layer between the supporting frameworks (1) can be made of one or more of foamed aluminum, honeycomb aluminum and other buffering and energy-absorbing materials; the damping layer (3) is composed of polyurethane plates, the thickness of the damping layer can be determined according to the lightning protection grade and the weight of the bottom lightning protection module, and the thickness of the damping layer is generally 6-12 mm.