Lightweight truss composite integrated special vehicle body

Abstract

This invention discloses a lightweight, integrated composite material truss body for special vehicles, comprising a metal truss and composite material armor. The composite material armor has a multi-layered structure, consisting of a ceramic layer, a structural load-bearing layer, and an energy-absorbing layer from the outside in. The metal truss is encased within the structural load-bearing layer as a supporting frame. The metal truss is made of titanium alloy. The metal truss is equipped with a drive wheel mounting flange, an idler wheel mounting flange, a road wheel balance elbow support, a track roller mounting seat, and a seat ring seat. The drive wheel mounting flange, idler wheel mounting flange, road wheel balance elbow support, track roller mounting seat, and seat ring seat are exposed outside the composite material armor. The metal truss of this invention is constructed from titanium alloy rectangular tubing welded into a single structure, offering a significant weight reduction advantage compared to traditional structural steel and aluminum alloys. This invention also addresses the challenges of complex tracked vehicle mobility systems, high requirements for relative dimensional accuracy between wheel systems, severe dynamic and static load impacts, and high rigidity requirements.

Description

Technical Field

[0001] This invention relates to a special vehicle body, and more particularly to a special vehicle body made of lightweight truss composite material. Background Technology

[0002] Lightweighting is an inevitable trend in the future development of special vehicle bodies. The body, which bears both load-bearing and protective functions, has always been a crucial direction in the lightweight design of special vehicles. Traditional special vehicle bodies generally employ a box structure welded from homogeneous metal armor plates. The armor plates simultaneously address the vehicle's ballistic resistance and load-bearing requirements. However, protection is a uniform requirement within a plane, while load-bearing capacity is a variable requirement within a plane. That is, armor plates of uniform thickness with the same protective performance will bear different loads during vehicle use. Achieving precision and harmony in both aspects simultaneously is often difficult. Ultimately, this leads to a common phenomenon in vehicle bodies designed with this concept: design redundancy in either protection or rigidity. It is difficult to effectively balance weight control and protective performance, and weight reduction efficiency is hard to improve effectively.

[0003] With the development of technology, a vehicle body structure consisting of a base body and armor plating has emerged in recent years. This structure, to a certain extent, separates the load-bearing and protective functions of the vehicle body, frees up the design freedom of the vehicle body, and improves the lightweight level of the vehicle body. However, it also has some problems: 1. The base body load-bearing structure mostly adopts a shell + frame structure. The vehicle body still needs to be covered with a metal shell, and its weight accounts for a large proportion, but its contribution to the rigidity and protective performance of the vehicle body is small. The improvement in the lightweight level of the vehicle body is limited, and its weight reduction rate is generally only within 15%; 2. The armor plating adopts a segmented installation structure. The armor segments are limited by the shape of the vehicle body and the installation components, which limits the effective protection area. Moreover, the installation of armor plating is relatively complicated, and the installation interface parts and fasteners add some negative weight. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a special vehicle body that integrates a lightweight titanium alloy truss with multifunctional armor composite material. This solves the problem of effectively balancing the load-bearing capacity and protective performance of the vehicle body, achieving a lightweight design that reduces weight by more than 30% compared to traditional armor steel vehicle bodies.

[0005] The technical solution adopted in this invention is as follows: A special vehicle body with a lightweight truss composite material integrated structure, comprising a metal truss and composite material armor, wherein the composite material armor is a multi-layer structure, comprising a ceramic layer, a structural bearing layer and an energy-absorbing layer from the outside to the inside, wherein the metal truss is encased within the structural bearing layer as a supporting skeleton; the metal truss is made of titanium alloy; the metal truss is provided with a drive wheel mounting flange, an idler wheel mounting flange, a road wheel balance elbow support, a track roller mounting seat and a seat ring seat, wherein the drive wheel mounting flange, the idler wheel mounting flange, the road wheel balance elbow support, the track roller mounting seat and the seat ring seat are exposed outside the composite material armor.

[0006] In the aforementioned lightweight truss composite material integrated special vehicle body, the metal truss includes a bottom truss module, two side truss modules, a roof truss module, and a support connection module. The two side truss modules are installed parallel to each other on both sides of the bottom truss module, and the roof truss module is installed on top of the two side truss modules. The rear ends of the two side truss modules, the bottom truss module, and the roof truss module are connected by the support connection module. The load-bearing wheel balance elbow support is set on the bottom truss module, and the drive wheel mounting flange and the idler wheel mounting flange are respectively set at the beginning and end of the side truss modules. The track roller mounting seat is set on the side truss module, and the seat ring seat is set on the roof truss module.

[0007] In the aforementioned lightweight truss composite material integrated special vehicle body, the bottom truss module includes two bottom longitudinal beams, multiple bottom transverse beams, load-bearing wheel balance elbow supports, and bottom longitudinal ribs; the two bottom longitudinal beams are arranged in parallel, and multiple load-bearing wheel balance elbow supports are provided on the bottom longitudinal beams. The multiple load-bearing wheel balance elbow supports on the two bottom longitudinal beams correspond one-to-one, and the two corresponding load-bearing wheel balance elbow supports are connected by bottom transverse beams. Adjacent bottom transverse beams are connected by multiple bottom longitudinal ribs.

[0008] In the aforementioned lightweight truss composite material integrated special vehicle body, the side truss module includes a drive wheel mounting flange, an idler wheel mounting flange, a track roller mounting seat, a limiter mounting seat, a side upper main beam, and support ribs; the upper main beams of the two side truss modules are fixedly installed on the two bottom longitudinal beams of the bottom truss module by multiple vertical ribs and multiple diagonal ribs, with the upper main beams parallel to the bottom longitudinal beams; the drive wheel mounting flange and the idler wheel mounting flange are respectively welded to the first and last ends of the bottom longitudinal beams; each diagonal rib is provided with a limiter mounting seat, and multiple track roller mounting seats are respectively installed on the vertical ribs at corresponding positions, with the vertical ribs for mounting track roller mounting seats and their adjacent diagonal ribs connected by support ribs.

[0009] In the aforementioned lightweight truss composite material integrated special vehicle body, the drive wheel mounting flange, idler wheel mounting flange, track roller mounting seat, and limiter mounting seat are manufactured using titanium alloy forgings, while the side upper main beam and support ribs are manufactured using titanium alloy profiles.

[0010] In the aforementioned lightweight truss composite material integrated special vehicle body, the top truss module consists of two top longitudinal beams, four top transverse beams, a seat ring, and top truss connecting ribs. The two top longitudinal beams are arranged in parallel and are fixed to the upper main beams of the two side truss modules by multiple vertical ribs. The two top longitudinal beams are connected by four top transverse beams, with one top transverse beam at each end of the top longitudinal beam and two top transverse beams in the middle of the top longitudinal beam, the top transverse beams being perpendicular to the top longitudinal beams. The top transverse beam at the rear is connected to its adjacent top transverse beam by multiple top truss connecting ribs, the top truss connecting ribs being parallel to the top longitudinal beams. The two top transverse beams in the middle are connected by two connecting ribs, and the seat ring is welded to the two top transverse beams and two connecting ribs in the middle.

[0011] In the aforementioned lightweight truss composite material integrated special vehicle body, the top longitudinal beam, top cross beam, and top truss connecting rib are manufactured using titanium alloy rectangular tubes, and the seat ring is manufactured using titanium alloy forgings.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Based on the concept of functional decomposition, this invention adopts a "metal truss + composite material armor" structure. The load-bearing function and protection function of the vehicle body are designed relatively independently, which increases the degree of freedom of the load-bearing structure and protection structure to be designed based on a single function, realizes the optimal matching of vehicle body load-bearing and protection, and greatly improves the vehicle body's lightweight level.

[0014] 2. This invention adopts an integrated manufacturing process of metal body truss and composite material armor. The composite material completely covers the metal truss, achieving both protection and one-time integral forming and sealing of the vehicle body.

[0015] 3. The metal truss of this invention is constructed from titanium alloy rectangular tubing welded into an integral structure, offering a significant advantage in weight reduction compared to traditional structural steel and aluminum alloys. Simultaneously, this invention addresses the challenges of complex tracked vehicle mobility systems, high dimensional accuracy requirements between wheel systems, severe dynamic and static load impacts, and high rigidity requirements.

[0016] 4. The composite material armor of the present invention has the characteristics of high protective performance and low signal characteristics. The layer structure design of the composite material can be flexibly matched according to the different protection requirements of different parts of the vehicle body.

[0017] 5. The integrated metal truss and composite material armor structure of the present invention eliminates the installation process of conventional bulletproof components and the weight of related connecting parts, which is more conducive to improving the overall rigidity of the vehicle body. Attached Figure Description

[0018] Figure 1 This is a vehicle body outline drawing of the present invention.

[0019] Figure 2 This is an isometric view of the metal truss of the present invention.

[0020] Figure 3 This is the bottom truss module of the present invention.

[0021] Figure 4 This is the side truss module of the present invention.

[0022] Figure 5 This invention relates to the roof truss module.

[0023] Figure 6 A schematic diagram of the structure of the multi-layer composite armor of the present invention.

[0024] Figure 1 In the middle: 1-metal truss, 2-composite material armor.

[0025] Figure 2 In the middle: 11-bottom truss module, 12-side truss module, 13-top truss module, 14-support connection module.

[0026] Figure 3 In the middle: 111-bottom longitudinal beam, 112-bottom transverse beam, 113-load wheel balance elbow mounting seat, 114-bottom longitudinal reinforcement.

[0027] Figure 4 In the middle: 121-Drive wheel mounting flange, 122-Inducer wheel mounting flange, 123-Tractor wheel mounting seat, 124-Limiter mounting seat, 125-Side upper main beam, 126-Support rib.

[0028] Figure 5 In the middle: 131-top longitudinal beam, 132-top transverse beam, 133-seat ring seat, 134-top truss connecting bar.

[0029] Figure 6 In the middle: 21-Ceramic layer, 22-Structural load-bearing layer, 23-Energy-absorbing layer. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings.

[0031] like Figures 1-6As shown, the present invention includes a metal truss 1 and a composite material armor 2. The composite material armor 2 has a multi-layer structure, comprising, from the outside in, a ceramic layer 21, a structural load-bearing layer 22, and an energy-absorbing layer 23. The ceramic layer 21 mainly provides the necessary hardness to resist rigid impacts and is primarily composed of high-hardness, low-density SiC ceramic or BC ceramic. The energy-absorbing layer 23 is primarily composed of ultra-high molecular weight polyethylene fiber composite material, with the resin component being high-elongation polyurethane. The metal truss 1 encases the structural load-bearing layer 22 as a supporting framework; the metal truss 1 is made of titanium alloy.

[0032] like Figures 2-5 As shown, the metal truss includes a bottom truss module 11, two side truss modules 12, a roof truss module 13, and a support connection module 14. The two side truss modules 11 are installed parallel to each other on both sides of the bottom truss module 11, and the roof truss module 13 is installed on top of the two side truss modules 12. The rear ends of the two side truss modules 12, the bottom truss module 11, and the roof truss module 13 are connected by the support connection module 14.

[0033] like Figure 2 , Figure 3 As shown, the bottom truss module 11 includes two bottom longitudinal beams 111, multiple bottom transverse beams 112, load-bearing wheel balance elbow supports 113, and bottom longitudinal ribs 114. The two bottom longitudinal beams 111 are arranged in parallel, and multiple load-bearing wheel balance elbow supports 113 are provided on the bottom longitudinal beams 111. The multiple load-bearing wheel balance elbow supports 113 on the two bottom longitudinal beams 111 correspond one-to-one, and two corresponding load-bearing wheel balance elbow supports 113 are connected by bottom transverse beams 112. Adjacent bottom transverse beams 112 are connected by multiple bottom longitudinal ribs 114. The bottom longitudinal beams 111, bottom transverse beams 112, and bottom longitudinal ribs 114 are manufactured using titanium alloy rectangular tubes, and the load-bearing wheel balance elbow supports 113 are manufactured using titanium alloy forgings.

[0034] like Figure 2 , Figure 4As shown, the side truss module 12 includes a drive wheel mounting flange 121, an inducer wheel mounting flange 122, a support wheel mounting seat 123, a limiter mounting seat 124, a side upper main beam 125, and a support rib 126. The upper main beams 125 of the two side truss modules 12 are fixedly installed on the two bottom longitudinal beams 111 of the bottom truss module 11 by multiple vertical ribs and multiple diagonal ribs, and the upper main beams 125 are parallel to the bottom longitudinal beams 111. The drive wheel mounting flange 121 and the inducer wheel mounting flange 122 are respectively welded to the first and last ends of the bottom longitudinal beams 111. Each diagonal rib is provided with a limiter mounting seat 124, and multiple support wheel mounting seats 123 are respectively installed on the vertical ribs at corresponding positions. The vertical ribs for installing the support wheel mounting seats 123 and the adjacent diagonal ribs are connected by support ribs 126. The drive wheel mounting flange 121, the idler wheel mounting flange 122, the track roller mounting seat 123, and the limiter mounting seat 124 are made of titanium alloy forgings, while the side upper main beam 125 and the support rib 126 are made of titanium alloy profiles.

[0035] like Figure 1 , Figure 2 , Figure 5 As shown, the top truss module 13 consists of two top longitudinal beams 131, four top transverse beams 132, a seat ring 133, and top truss connecting ribs 134. The two top longitudinal beams 131 are arranged in parallel and are fixedly installed on the upper main beams 125 of the two side truss modules 12 by multiple vertical ribs. The two top longitudinal beams 131 are connected by four top transverse beams 132. There is one top transverse beam 132 at each end of the top longitudinal beam 131 and two top transverse beams 132 in the middle of the top longitudinal beam 131. The top transverse beams 132 at the tail end and the adjacent top transverse beams 132 are connected by multiple top truss connecting ribs 134. The top truss connecting ribs are parallel to the top longitudinal beams 131. The two top transverse beams 132 in the middle are connected by two connecting ribs. The seat ring 133 is welded to the two top transverse beams 132 and the two connecting ribs in the middle. The top longitudinal beam 131, top transverse beam 112, and top truss connecting rib 134 are manufactured using titanium alloy rectangular tubes, and the seat ring 113 is manufactured using titanium alloy forgings.

[0036] like Figure 1 , Figure 6As shown, the structural load-bearing layer fiber fabric of the composite armor is laid on both the inner and outer sides of the vehicle frame according to the designed layup units and a certain layup angle. The contact surface between the metal frame and the carbon fiber fabric is stitched with high-strength fibers in the Z direction. The structural load-bearing layer fiber fabric and the vehicle frame are integrally cast in one piece. The mounting supports of each running system (road wheel balance elbow support 113, drive wheel mounting flange 121, idler wheel mounting flange 122, track roller mounting seat 123), the power transmission system mounting support (limiter mounting seat 124), and the seat ring seat 133 are not covered by the composite armor 2 and are exposed outside the composite armor 2.

Claims

1. A lightweight truss composite material integrated special vehicle body, characterized by: It includes a metal truss and composite material armor. The composite material armor has a multi-layer structure, which includes a ceramic layer, a structural load-bearing layer and an energy-absorbing layer from the outside to the inside. The metal truss is wrapped inside the structural load-bearing layer as a supporting skeleton. The metal truss is made of titanium alloy. The metal truss is equipped with a drive wheel mounting flange, an idler wheel mounting flange, a road wheel balance elbow support, a track roller mounting seat and a seat ring seat. The drive wheel mounting flange, idler wheel mounting flange, road wheel balance elbow support, track roller mounting seat and seat ring seat are exposed outside the composite material armor.

2. The lightweight truss composite material integrated special vehicle body according to claim 1, characterized in that: The metal truss includes a bottom truss module, two side truss modules, a roof truss module, and a support connection module. The two side truss modules are installed parallel to each other on both sides of the bottom truss module, and the roof truss module is installed on top of the two side truss modules. The rear ends of the two side truss modules, the bottom truss module, and the roof truss module are connected by the support connection module. The load-bearing wheel balance elbow support is set on the bottom truss module, and the drive wheel mounting flange and the idler wheel mounting flange are respectively set at the beginning and end of the side truss modules. The track roller mounting seat is set on the side truss module, and the seat ring seat is set on the roof truss module.

3. The lightweight truss composite material integrated special vehicle body according to claim 2, characterized in that: The bottom truss module includes two bottom longitudinal beams, multiple bottom transverse beams, load-bearing wheel balance elbow supports, and bottom longitudinal reinforcement. The two bottom longitudinal beams are arranged in parallel, and multiple load-bearing wheel balance elbow supports are provided on the bottom longitudinal beams. The multiple load-bearing wheel balance elbow supports on the two bottom longitudinal beams correspond one-to-one. The two corresponding load-bearing wheel balance elbow supports are connected by bottom transverse beams, and the two adjacent bottom transverse beams are connected by multiple bottom longitudinal reinforcements.

4. The special vehicle body made of lightweight truss composite material as described in claim 2, characterized in that: The side truss module includes a drive wheel mounting flange, an inducer wheel mounting flange, a track roller mounting seat, a limiter mounting seat, a side upper main beam, and supporting ribs. The upper main beams of the two side truss modules are fixedly installed on the two bottom longitudinal beams of the bottom truss module by multiple vertical ribs and multiple diagonal ribs, with the upper main beams parallel to the bottom longitudinal beams. The drive wheel mounting flange and the inducer wheel mounting flange are welded to the first and last ends of the bottom longitudinal beams, respectively. Each diagonal rib is provided with a limiter mounting seat, and multiple track roller mounting seats are respectively installed on the vertical ribs at corresponding positions. The vertical ribs for installing track roller mounting seats and the adjacent diagonal ribs are connected by supporting ribs.

5. The lightweight truss composite material integrated special vehicle body according to claim 4, characterized in that: The drive wheel mounting flange, inducer wheel mounting flange, track roller mounting seat, and limiter mounting seat are manufactured from titanium alloy forgings, while the side upper main beam and support ribs are manufactured from titanium alloy profiles.

6. The special vehicle body made of lightweight truss composite material as described in claim 2, characterized in that: The top truss module consists of two top longitudinal beams, four top transverse beams, a seat ring, and top truss connecting bars. The two top longitudinal beams are arranged in parallel and are fixed to the upper main beams of the two side truss modules by multiple vertical bars. The two top longitudinal beams are connected by four top transverse beams, with one top transverse beam at each end of the top longitudinal beam and two top transverse beams in the middle of the top longitudinal beam, the top transverse beams being perpendicular to the top longitudinal beams. The top transverse beam at the end and its adjacent top transverse beam are connected by multiple top truss connecting bars, the top truss connecting bars being parallel to the top longitudinal beams. The two top transverse beams in the middle are connected by two connecting bars, and the seat ring is welded to the two top transverse beams and two connecting bars in the middle.

7. The lightweight truss composite material integrated special vehicle body according to claim 6, characterized in that: The top longitudinal beam, top transverse beam, and top truss connecting ribs are made of titanium alloy rectangular tubing, and the seat ring is made of titanium alloy forgings.

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