CN-122015576-A - Vehicle chassis and circumferential lightning protection and explosion protection strategy and assembly method

CN122015576ACN 122015576 ACN122015576 ACN 122015576ACN-122015576-A

Abstract

The invention provides a vehicle chassis and a circumferential lightning-proof and explosion-proof strategy and a fitting method, which relate to the field of lightning-proof and explosion-proof structures and materials, wherein the lightning-proof and explosion-proof strategy adopts a V-shaped structure and an armor steel material, the V-shaped structure is V-shaped double-layer longitudinal double V-shaped or W-shaped transverse double V-shaped, the armor steel is DF1600A armor steel, the fitting method comprises the following steps of 1) preparing i) the vehicle for inspection and cleaning, ii) preparing and checking parts, 2) fitting the V-shaped structure i) positioning and preliminary fixing, ii) installing the V-shaped structure, 3) fitting the armor steel i) cutting and forming, ii) positioning and installing the armor steel, 4) overall debugging and checking i) connecting tightness checking, ii) preliminary detection of the protective performance, and greatly improving the survivability of a 4X 4 or 6X 6 wheel type special vehicle in a dangerous environment through the synergistic effect of the V-shaped structure and the armor steel material.

Inventors

ZHOU HUAHAI
XU LU
CHEN SHENGCHAO
LU HAIYAN
WANG SHIPING

Assignees

湖北长平汽车装备有限公司

Dates

Publication Date: 20260512
Application Date: 20260305

Claims (5)

1. The vehicle chassis, the circumferential lightning protection and explosion protection strategy and the assembling method are characterized in that, The lightning protection and explosion prevention strategy adopts a V-shaped structure and an armored steel material, wherein the V-shaped structure can disperse the energy of explosion shock waves, guide the impact force generated by explosion to two sides of a vehicle and reduce the direct impact on a chassis of the vehicle; The assembling method comprises the following steps: 1) Pre-stage preparation: i) The vehicle inspection and cleaning comprises the steps of performing comprehensive and careful inspection on a 4 multiplied by 4 or 6 multiplied by 6 wheeled special vehicle, including structural integrity, surface flatness, connection status of all parts and the like of a chassis, thoroughly cleaning oil stains, dust, rust and other impurities on the chassis and the circumferential surface of the vehicle by using a special cleaning tool and a cleaning agent, ensuring clean and flat mounting surfaces, and providing a good foundation for subsequent assembly work; Preparing and checking parts, namely preparing the required V-shaped structural parts, DF1600A armored steel plates, positioning pins, bolts, nuts and other parts according to design requirements, strictly checking the quality of each part, checking whether the dimensional accuracy of each part meets the design drawing requirements, and ensuring the quality reliability of all parts by timely replacing parts which do not meet the requirements, wherein the surface of each part has defects such as cracks, scratches, deformation and the like; 2) Fitting of V-shaped structure: i) Positioning and preliminary fixing, namely determining the installation position of the V-shaped structure according to the design layout of the chassis of the vehicle; ii), mounting the V-shaped structure, namely connecting the V-shaped structure by adopting a positioning pin and a bolt in a non-protection direction; 3) Armor steel fitting: i) Cutting and shaping, namely cutting the DF1600A armor steel plate by using professional cutting equipment (such as a plasma cutting machine, a laser cutting machine and the like) according to the shape and the size of a vehicle chassis and a circumferential protection area, strictly controlling cutting precision in the cutting process to ensure that the size of the cut armor steel meets the design requirement, polishing the edge of the armor steel after the cutting is finished to remove burrs and sharp edges to prevent injury to personnel in the mounting and using processes, bending and shaping the armor steel in the protection area with complex shapes by using professional bending equipment (such as a hydraulic bending machine) according to the bending radius and the angle required by the design to ensure that the armor steel can be well attached to the surface of the vehicle; Positioning and installing the armoured steel, namely placing the cut and molded armoured steel at corresponding protection positions of a chassis and a circumference of a vehicle, performing preliminary positioning by using positioning pins in a non-protection direction, reasonably designing the positioning pins according to the size and the shape of the armoured steel, ensuring that the armoured steel cannot displace in the installation process, performing temporary fixation on the surface of the armoured steel and the surface of the vehicle by using a spot welding mode after positioning, uniformly distributing spot welding spots in a spot welding mode, ensuring that the spacing between the spot welding spots is not too large, ensuring that the armoured steel cannot loosen in the subsequent installation process, performing formal connection between the armoured steel and the vehicle by using bolts and nuts in the non-protection direction, selecting proper bolt specifications and tightening torque according to the thickness and the stress condition of the armoured steel in the connection process, ensuring firm and reliable connection, and reinforcing the armoured steel in some key parts by adopting a mode of welding and bolt connection, thereby further improving the connection strength; 4) Overall debugging and inspection: i) After the V-shaped structure and the armored steel are assembled, all the bolt connecting parts are comprehensively inspected, and bolts are inspected and re-tightened one by using a torque wrench according to a specified tightening torque, so that all the bolts are screwed in place, and the connection is firm and reliable; and ii) primarily detecting the protective performance, namely primarily evaluating the installation quality of the V-shaped structure and the armor steel by means of visual inspection, simple knocking detection and the like, checking whether the shape of the V-shaped structure meets the design requirement, whether deformation or damage exists, checking whether the adhesion degree of the armor steel and the surface of the vehicle is good, whether a gap or a tilting phenomenon exists, and simultaneously, simply testing the running performance of the vehicle, checking whether abnormal vibration or noise exists in the running process of the vehicle, and ensuring that the normal running performance of the vehicle is not affected by the assembling work.
2. The vehicle chassis and the circumferential lightning protection and explosion prevention strategy and the assembling method according to claim 1 are characterized in that the V-shaped structure is a V-shaped double-layer longitudinal double-V-shaped or a W-shaped transverse double-V-shaped structure, the dispersing capability of the V-shaped double-layer longitudinal double-V-shaped structure on explosion shock waves is further enhanced through double-layer design, the shock waves can be effectively guided and attenuated along a specific direction in a propagation process through a longitudinal arrangement mode, multiple protection barriers are constructed in the transverse direction through the W-shaped transverse double-V-shaped structure, and when explosion occurs on the side face of a vehicle, the shock waves can be dispersed and absorbed from multiple angles, so that the lightning protection and explosion prevention performance of the circumferential direction of the vehicle is improved.
3. The vehicle chassis and circumferential lightning protection and explosion protection strategy and assembly method according to claim 2 are characterized in that in the step ii) of the assembly method, for the V-shaped double-layer longitudinal double-V-shaped structure, a lower V-shaped plate is placed at a corresponding position of the vehicle chassis, a high-precision positioning pin in a non-protection direction is used for preliminary positioning, the position of the lower V-shaped plate is ensured to be accurate, the diameter and the length of the positioning pin are accurately selected according to the size of a positioning hole in the V-shaped plate, the positioning pin can be tightly inserted into the positioning hole to achieve good positioning, then a temporary bolt is used for preliminary fixing the lower V-shaped plate and the vehicle chassis, the tightening torque of the temporary bolt is not too large to be capable of stably fixing the V-shaped plate and facilitating subsequent adjustment, after the lower V-shaped plate is preliminarily fixed, the upper V-shaped plate is placed above the lower V-shaped plate according to design requirements, the positioning pin is used for positioning, the relative position of the upper V-shaped plate and the lower V-shaped plate is ensured to be accurate, then the bolt and the nut are used in the non-protection direction, and the upper V-shaped plate and the lower V-shaped plate are tightly connected with the vehicle chassis in a regular and firm connection mode is adopted when the tightening torque is required, and the tightening torque is required to be in a regular and firm mode.
4. The vehicle chassis and circumferential lightning protection and explosion protection strategy and assembly method according to claim 2, wherein in the step ii) of the assembly method, the W-shaped transverse double-V-shaped structure is initially positioned by using a positioning pin in a high-precision non-protection direction, so that the position of the W-shaped transverse double-V-shaped plate is accurate, the diameter and the length of the positioning pin are precisely selected according to the size of a positioning hole on the W-shaped transverse double-V-shaped plate, the positioning pin can be tightly inserted into the positioning hole to play a good positioning role, then the W-shaped transverse double-V-shaped plate and the vehicle chassis are firmly connected by using a formal bolt and a formal nut in the non-protection direction, and when the bolt and the nut are screwed, the bolt is gradually screwed to a specified moment value in a cross screwing mode so as to ensure the firmness and uniformity of connection.
5. The vehicle chassis and circumferential lightning protection and explosion protection strategy and assembly method according to claim 1, wherein the armor steel is DF1600A armor steel, and the mechanical properties of the armor steel are HBW-500, tensile strength-1600 MPa, yield strength-1400 MPa, elongation-10% and impact toughness (-40 ℃) -24J.

Description

Vehicle chassis and circumferential lightning protection and explosion protection strategy and assembly method Technical Field The invention relates to the technical field of lightning protection and explosion prevention structures and materials, in particular to a vehicle chassis, a circumferential lightning protection and explosion prevention strategy and a matching method. Background In military operations, anti-terrorist operations and some special dangerous work environments, wheeled special vehicles often face the threat of explosives such as mines, simple explosive devices and the like. The existing vehicle protection technology has the problems of limited protection effect, complex structure, difficult assembly and the like when coping with complex and changeable explosion scenes, and particularly for a 4×4 or 6×6 wheel type special vehicle, an effective lightning protection and explosion protection strategy and an assembly method are urgently needed under the condition that the explosion equivalent is not more than 6kgTNT so as to improve the survivability and the combat efficiency of the vehicle and ensure the normal running and personnel safety of the vehicle in a dangerous environment. Disclosure of Invention In order to solve the problems in the background technology, the invention provides a vehicle chassis, a circumferential lightning protection and explosion protection strategy and a matching method, which can effectively resist explosion threat with explosion equivalent not more than 6kgTNT by the synergistic effect of a V-shaped structure and an armored steel material, and greatly improve the survivability of the 4 multiplied by 4 or 6 multiplied by 6 wheeled special vehicle in a dangerous environment. The invention provides a vehicle chassis, a circumferential lightning protection and explosion protection strategy and an assembling method, The lightning protection and explosion prevention strategy adopts a V-shaped structure and an armored steel material, wherein the V-shaped structure can disperse the energy of explosion shock waves, guide the impact force generated by explosion to two sides of a vehicle and reduce the direct impact on a chassis of the vehicle; The assembling method comprises the following steps: 1) Pre-stage preparation: i) The vehicle inspection and cleaning comprises the steps of performing comprehensive and careful inspection on a 4 multiplied by 4 or 6 multiplied by 6 wheeled special vehicle, including structural integrity, surface flatness, connection status of all parts and the like of a chassis, thoroughly cleaning oil stains, dust, rust and other impurities on the chassis and the circumferential surface of the vehicle by using a special cleaning tool and a cleaning agent, ensuring clean and flat mounting surfaces, and providing a good foundation for subsequent assembly work; Preparing and checking parts, namely preparing the required V-shaped structural parts, DF1600A armored steel plates, positioning pins, bolts, nuts and other parts according to design requirements, strictly checking the quality of each part, checking whether the dimensional accuracy of each part meets the design drawing requirements, and ensuring the quality reliability of all parts by timely replacing parts which do not meet the requirements, wherein the surface of each part has defects such as cracks, scratches, deformation and the like; 2) Fitting of V-shaped structure: i) Positioning and preliminary fixing, namely determining the installation position of the V-shaped structure according to the design layout of the chassis of the vehicle; ii), mounting the V-shaped structure, namely connecting the V-shaped structure by adopting a positioning pin and a bolt in a non-protection direction; 3) Armor steel fitting: i) Cutting and shaping, namely cutting the DF1600A armor steel plate by using professional cutting equipment (such as a plasma cutting machine, a laser cutting machine and the like) according to the shape and the size of a vehicle chassis and a circumferential protection area, strictly controlling cutting precision in the cutting process to ensure that the size of the cut armor steel meets the design requirement, polishing the edge of the armor steel after the cutting is finished to remove burrs and sharp edges to prevent injury to personnel in the mounting and using processes, bending and shaping the armor steel in the protection area with complex shapes by using professional bending equipment (such as a hydraulic bending machine) according to the bending radius and the angle required by the design to ensure that the armor steel can be well attached to the surface of the vehicle; Positioning and installing the armoured steel, namely placing the cut and molded armoured steel at corresponding protection positions of a chassis and a circumference of a vehicle, performing preliminary positioning by using positioning pins in a non-protection direction, reasonably designing the positionin