CN109606296B - Memory alloy framework type commercial vehicle lower protection assembly - Google Patents
Memory alloy framework type commercial vehicle lower protection assembly Download PDFInfo
- Publication number
- CN109606296B CN109606296B CN201811568480.6A CN201811568480A CN109606296B CN 109606296 B CN109606296 B CN 109606296B CN 201811568480 A CN201811568480 A CN 201811568480A CN 109606296 B CN109606296 B CN 109606296B
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- niti
- memory alloy
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- glass fiber
- shape memory
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/56—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/56—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
- B60R19/565—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder on vehicle sides
Abstract
A lightweight memory alloy framework protection assembly comprises a protection beam and a cast aluminum support, wherein the protection beam is composed of a glass fiber covering layer and a NiTi shape memory alloy support framework. The upper surface and the lower surface of the NiTi shape memory alloy support framework are covered with glass fiber covering layers, and the glass fiber covering layers are bonded and fixed together through an oxide resin adhesive to form a protective beam; the NiTi shape memory alloy supporting framework is composed of an M-shaped NiTi alloy bracket and a # -shaped NiTi alloy thin plate, wherein the M-shaped NiTi alloy bracket is welded on the # -shaped NiTi alloy thin plate to form a single-layer framework structure, and the single-layer framework structure is welded layer by layer to form the NiTi shape memory alloy supporting framework. The cast aluminum bracket is connected and fixed with the glass fiber covering layer on one side to form a protection assembly. The invention improves the impact resistance, realizes great weight reduction, realizes automatic restoration after the dynamic load is unloaded by utilizing the recoverable characteristic of the NiTi shape memory alloy, and prolongs the service life of the protection assembly.
Description
Technical Field
The invention belongs to the design field of front lower protection devices of commercial vehicles, and designs a memory alloy framework type lower protection assembly aiming at the bending resistance characteristic of a protection cross beam.
Background
The front lower protection device for the commercial vehicle is composed of a protection cross beam and a connecting support, and has enough blocking force for acting force in the protection direction except for meeting certain size requirements, and particularly the protection cross beam has high bending resistance. The conventional front lower protective beam is manufactured by steel plates through the working procedures of roll bending, welding and the like, and a reinforcing plate is usually welded in the conventional front lower protective beam to ensure the whole bending resistance and reliability, so that material thickness redundancy exists, and a larger weight reduction space exists.
Disclosure of Invention
The invention provides a memory alloy framework type commercial vehicle lower protection assembly which can provide enough blocking force for acting force parallel to the transverse axis and the longitudinal axis of a vehicle and reduce the risk of other vehicles drilling into the bottom of the vehicle. Compared with a roll bending steel assembly in the traditional process, the roll bending steel assembly has the advantage of obvious lightweight effect due to the adoption of NiTi shape memory alloy, glass fiber and cast aluminum materials and the combination of a space frame design concept.
Aiming at the functional characteristics of the front lower part protection assembly of the commercial vehicle, the invention aims at improving the bending resistance of the protection beam, adopts the space frame structure design technology, combines the NiTi shape memory alloy material, the glass fiber board and the cast aluminum bracket, and designs the framework type front lower part protection assembly of the commercial vehicle. The glass fiber board is used as a covering layer of the protective beam and plays a role in enveloping and fixing the internal framework; the internal supporting framework of the protective beam is made of the NiTi shape memory alloy material through cutting, stamping, heat treatment, shape training and welding; the glass fiber covering layer and the NiTi alloy supporting framework are fixedly bonded by the oxide resin glue. The left end and the right end of the glass fiber covering layer on one side are respectively connected with the cast aluminum bracket through bolts to form a lower protection assembly. The assembly structure has good bending resistance, and utilizes the recovery characteristic of the NiTi shape memory alloy material after load unloading to realize automatic rebound repair of the protective beam after pressure load action, and the weight of the assembly is reduced by more than 40 percent compared with the assembly of the same-grade vehicle type. Similar memory alloy framework type front lower protection assemblies do not appear in the field of structural design of commercial vehicle parts.
The invention comprises a glass fiber covering layer and a NiTi shape memory alloy supporting framework, wherein the upper surface and the lower surface of the NiTi shape memory alloy supporting framework are covered with the glass fiber covering layer, and the glass fiber covering layer is bonded and fixed with the supporting framework through an oxide resin adhesive to form a protective beam. The two sides of the protective beam are connected with the cast aluminum bracket through bolts and nuts to form a protective assembly. The NiTi shape memory alloy supporting framework is composed of an M-shaped NiTi alloy bracket and a # -shaped NiTi alloy thin plate, wherein the M-shaped NiTi alloy bracket is welded on the # -shaped NiTi alloy thin plate to form a single-layer framework structure, and the single-layer framework structure is welded layer by layer to form the NiTi shape memory alloy supporting framework.
The glass fiber covering layers are used as upper and lower surface covering pieces of the protective beam;
the M-shaped NiTi alloy bracket is manufactured by warp cutting, stamping, heat treatment and shape training, and the # -shaped NiTi alloy sheet is manufactured by a warp cutting process.
The cast aluminum bracket is connected and fixed with one side of the glass fiber covering layer through bolts and nuts to form a protection assembly.
The invention can be used for designing the protection and anti-drilling device at the front lower part, the rear lower part and the lower part of the side surface of the commercial vehicle.
The glass fiber covering layer can adopt glass fiber boards with different performance grades, different fiber arrangement directions and different thicknesses according to the requirements of rigidity and strength.
The M-shaped NiTi alloy support manufactured by the warp cutting, the punching, the heat treatment and the shape training has the functions of supporting, absorbing energy and automatically restoring the shape, the # -shaped NiTi alloy thin plate manufactured by the wire cutting process has the function of connecting each layer of alloy support, the M-shaped NiTi alloy support and the # -shaped NiTi alloy thin plate are welded to form a single-layer framework structure, and the single-layer framework structure is welded layer by layer to form the NiTi shape memory alloy supporting framework.
The invention has the beneficial effects that:
the utility model has the advantages of can replace protection assembly under the commercial car of traditional thick wall metal structure form, under the prerequisite that possesses equal bearing capacity, realize the lightweight to utilize NiTi shape memory alloy to restore initial shape after pressure load uninstallation, promote the life of protection assembly. The stability of the cross beam in the bearing process is kept by utilizing the glass fiber covering layer; the NiTi shape memory alloy support framework is utilized to improve the buffering and energy absorption level and reduce the damage of impact load to vehicles and passengers; and the NiTi shape memory alloy can automatically return to the shape of the initial training after being unloaded, thereby supporting the compression deformation part to return to the initial state. In addition, the application of the light material and the design of the space frame also obviously reduce the whole weight, and are beneficial to the light weight design of the whole vehicle. The material type and the strength grade of the glass fiber covering layer, the included angle of the top of the M-shaped NiTi alloy bracket in the NiTi shape memory alloy supporting framework and the arrangement density of the bracket can be completely new and optimized according to different bearing functions, and the bracket can be used for designing the anti-drilling devices at the front lower part, the rear lower part and the lower part of the side surface of the commercial vehicle and has excellent expansibility and application prospect.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a top view of the present invention.
FIG. 3 is a perspective view of a single-layered M-shaped NiTi alloy stent according to the present invention.
FIG. 4 is a schematic view of a single-layer # -shaped thin NiTi alloy sheet according to the present invention.
FIG. 5 is a partial perspective view of the NiTi shape memory alloy support skeleton of the present invention.
Detailed Description
Referring to fig. 1, 2, 3, 4 and 5, the present invention includes a glass fiber covering layer 1 and a NiTi shape memory alloy supporting skeleton 2, wherein the upper and lower surfaces of the NiTi shape memory alloy supporting skeleton 2 are covered with the glass fiber covering layer 1, and the glass fiber covering layers 1 are bonded and fixed together by an oxide resin adhesive to form a protection beam; the NiTi shape memory alloy supporting framework 2 is composed of an M-shaped NiTi alloy bracket 4 and a # -shaped NiTi alloy thin plate 3, the M-shaped NiTi alloy bracket 4 is welded on the # -shaped NiTi alloy thin plate 3 to form a single-layer framework structure, and the single-layer framework structure is welded layer by layer to form the NiTi shape memory alloy supporting framework 2.
The glass fiber covering layer 1 is used as an upper surface covering piece and a lower surface covering piece of the protective beam;
the M-shaped NiTi alloy bracket 4 is manufactured by warp cutting, stamping, heat treatment and shape training, and the # -shaped NiTi alloy sheet 3 is manufactured by a warp cutting process.
The cast aluminum bracket 5 is connected and fixed with the glass fiber covering layer 1 through bolts and nuts to form a protection assembly.
The invention can be used for designing the protection and anti-drilling device at the front lower part, the rear lower part and the lower part of the side surface of the commercial vehicle.
The glass fiber covering layer can adopt glass fiber boards with different performance grades, different fiber arrangement directions and different thicknesses according to the requirements of rigidity and strength.
The M-shaped NiTi alloy support 4 manufactured by the warp cutting, the punching, the heat treatment and the shape training has the functions of supporting, absorbing energy and automatically restoring the shape, the well-shaped NiTi alloy thin plate 3 manufactured by the wire cutting process has the function of connecting each layer of alloy support, the M-shaped NiTi alloy support 4 and the well-shaped NiTi alloy thin plate 3 are welded to form a single-layer framework structure, and the single-layer framework structure is welded layer by layer to form the truss-type NiTi shape memory alloy supporting framework 2.
Claims (3)
1. A memory alloy framework type commercial vehicle lower protection assembly is characterized in that: the protective beam comprises a glass fiber covering layer (1) and a NiTi shape memory alloy supporting framework (2), wherein the upper surface and the lower surface of the NiTi shape memory alloy supporting framework (2) are covered with the glass fiber covering layer (1), and the glass fiber covering layers (1) are bonded and fixed together through an oxidized resin adhesive to form the protective beam; NiTi shape memory alloy support skeleton (2) constitute by M font NiTi alloy support (4) and groined type NiTi alloy sheet metal (3), M font NiTi alloy support (4) welds on groined type NiTi alloy sheet metal (3), forms the individual layer skeleton texture, and the individual layer skeleton texture welds layer by layer and forms NiTi shape memory alloy support skeleton (2).
2. The memory alloy framework type commercial vehicle lower protection assembly of claim 1, wherein: the glass fiber coating device is characterized by further comprising a cast aluminum support (5), wherein the cast aluminum support (5) is connected and fixed with the glass fiber coating layer (1) through bolts and nuts.
3. The memory alloy framework type commercial vehicle lower protection assembly of claim 1, wherein: the M-shaped NiTi alloy bracket (4) is manufactured by warp cutting, stamping, heat treatment and shape training, and the # -shaped NiTi alloy sheet (3) is manufactured by a warp cutting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568480.6A CN109606296B (en) | 2018-12-21 | 2018-12-21 | Memory alloy framework type commercial vehicle lower protection assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568480.6A CN109606296B (en) | 2018-12-21 | 2018-12-21 | Memory alloy framework type commercial vehicle lower protection assembly |
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| CN109606296A CN109606296A (en) | 2019-04-12 |
| CN109606296B true CN109606296B (en) | 2021-09-14 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849234A (en) * | 2003-07-03 | 2006-10-18 | 奈特夏普国际有限公司 | Bumper system incorporating thermoformed energy absorber |
| CN101590835A (en) * | 2009-06-30 | 2009-12-02 | 哈尔滨工业大学 | Federal bumper based on shape-memory material |
| CN105015459A (en) * | 2014-04-25 | 2015-11-04 | 通用汽车环球科技运作有限责任公司 | Stiffening and/or strengthening a structural member using a pre-made microtruss insert |
| GB2527926A (en) * | 2015-05-21 | 2016-01-06 | Daimler Ag | Structural member for a vehicle as well as a crash management system comprising such a structural member |
| CN105599715A (en) * | 2016-01-04 | 2016-05-25 | 中国科学院力学研究所 | Impact energy absorption mechanism |
| CN207241636U (en) * | 2017-08-14 | 2018-04-17 | 中国第一汽车股份有限公司 | A kind of white body truss-like lightweight bumper assembly |
-
2018
- 2018-12-21 CN CN201811568480.6A patent/CN109606296B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1849234A (en) * | 2003-07-03 | 2006-10-18 | 奈特夏普国际有限公司 | Bumper system incorporating thermoformed energy absorber |
| CN101590835A (en) * | 2009-06-30 | 2009-12-02 | 哈尔滨工业大学 | Federal bumper based on shape-memory material |
| CN105015459A (en) * | 2014-04-25 | 2015-11-04 | 通用汽车环球科技运作有限责任公司 | Stiffening and/or strengthening a structural member using a pre-made microtruss insert |
| GB2527926A (en) * | 2015-05-21 | 2016-01-06 | Daimler Ag | Structural member for a vehicle as well as a crash management system comprising such a structural member |
| CN105599715A (en) * | 2016-01-04 | 2016-05-25 | 中国科学院力学研究所 | Impact energy absorption mechanism |
| CN207241636U (en) * | 2017-08-14 | 2018-04-17 | 中国第一汽车股份有限公司 | A kind of white body truss-like lightweight bumper assembly |
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| CN109606296A (en) | 2019-04-12 |
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