CN113858717B - Composite material lattice sandwich cylindrical bearing structure - Google Patents
Composite material lattice sandwich cylindrical bearing structure Download PDFInfo
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- CN113858717B CN113858717B CN202111004116.9A CN202111004116A CN113858717B CN 113858717 B CN113858717 B CN 113858717B CN 202111004116 A CN202111004116 A CN 202111004116A CN 113858717 B CN113858717 B CN 113858717B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a general shape other than plane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/02—Layer formed of wires, e.g. mesh
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
Abstract
The invention discloses a composite material lattice sandwich cylindrical bearing structure. The composite material lattice sandwich cylindrical bearing structure is provided with a main body, wherein the main body comprises a straight cylinder section and a conical cylinder section which are distributed up and down; the main body comprises an outer panel and an inner panel which are arranged inside and outside, and a dot matrix sandwich is clamped between the outer panel and the inner panel; the lattice sandwich comprises a plurality of horizontally arranged aluminum alloy wire rings, the aluminum alloy wire rings are saw-toothed polygonal aluminum alloy wire rings, and two adjacent aluminum alloy wire rings are arranged in a staggered mode; the outer edge of the aluminum alloy wire ring is connected with a sawtooth-shaped aluminum alloy strand, the joint of the aluminum alloy wire ring and the aluminum alloy strand adopts a cross clamping groove connecting structure, and each node unit of the dot matrix sandwich is pyramid-shaped. The main body of the invention is composed of a straight cylinder section and a conical cylinder section, the internal interlayer adopts a pyramid lattice sandwich structure to reduce the weight, aluminum alloy beams are embedded in the positions of the openings, and metal frames are connected to the upper end surface and the lower end surface of the cylindrical bearing structure to enhance the connection strength.
Description
Technical Field
The invention relates to the technical field of bearing structures, in particular to a composite material lattice sandwich cylindrical bearing structure with a light cylindrical bearing structure.
Background
The cylindrical bearing structure is widely applied to spacecraft cabin sections, special equipment protective shells, large-scale supporting frames and the like. The traditional cylindrical bearing structure is mostly formed by cylinders with equal inner and outer diameters, and the design of the bearing structure separately considers a structural system and a functional system, namely, part of materials meet the requirements of mechanical properties such as structural strength, rigidity and the like; and the other part of the material meets the requirements of heat insulation, vibration isolation or electronic shielding and the like. Therefore, the weight of the structure is greatly increased, and the service performance and the reliability of the structure are reduced. If the mechanical property and the functional design of the main bearing structure can be considered in a combined way, the space can be saved, and the weight of the whole structure can be reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the composite material lattice sandwich cylindrical bearing structure can not only utilize the internal space of the bearing structure to carry out functional design, but also reduce the weight of the main bearing structure.
The technical scheme adopted by the invention for solving the technical problem is as follows: a composite material lattice sandwich cylindrical bearing structure comprises a main body, wherein the main body comprises a straight cylinder section and a conical cylinder section which are distributed up and down, the small end part of the conical cylinder section is connected with the straight cylinder section, and the diameter of the small end part is equal to that of the straight cylinder section; the main body comprises an outer panel and an inner panel which are arranged inside and outside, and a dot matrix sandwich is clamped between the outer panel and the inner panel;
the lattice sandwich comprises a plurality of horizontally arranged aluminum alloy wire rings, the aluminum alloy wire rings are saw-toothed polygonal aluminum alloy wire rings, and two adjacent aluminum alloy wire rings are arranged in a staggered mode; the outer edge of the aluminum alloy wire ring is connected with a sawtooth-shaped aluminum alloy strand, the joint of the aluminum alloy wire ring and the aluminum alloy strand adopts a cross clamping groove connecting structure, and each node unit of the dot matrix sandwich is pyramid-shaped.
The outer panel and the inner panel are made of high-modulus carbon fiber composite materials, such as high-modulus carbon fiber composite materials, glass fiber composite materials, hybrid fiber materials and the like, so that the weight of the composite material lattice sandwich cylindrical load-bearing structure is further reduced while the structural strength is met.
Furthermore, the composite material lattice sandwich cylindrical force bearing structure also comprises an upper metal frame and a lower metal frame, wherein the upper metal frame is covered at the top end part of the straight cylinder section, and the lower metal frame is covered at the bottom end part of the conical cylinder section. The upper metal frame and the lower metal frame can improve the connection strength of the composite material lattice sandwich cylindrical bearing structure.
Furthermore, the composite material lattice sandwich cylindrical bearing structure also comprises an aluminum alloy beam, wherein the aluminum alloy beam is positioned in the straight cylinder section, and the lattice sandwich of the straight cylinder section is connected with the aluminum alloy beam in a clamping way. The aluminum alloy beam strengthens the structural strength of the composite material lattice sandwich cylindrical bearing structure.
Furthermore, an installation groove is formed in the aluminum alloy beam and embedded into the dot matrix clamping core.
Furthermore, the inner side and the outer side of the dot matrix sandwich are respectively connected with the outer panel and the inner panel through adhesives.
Furthermore, the straight cylinder section is provided with a plurality of openings, the openings are located on the outer panel, and the aluminum alloy beam is arranged at the position corresponding to the openings. The openings facilitate expansion and connection of the outer structure.
The beneficial effects of the invention are: the invention has simple structure and the following advantages:
(1) The lattice sandwich cylindrical bearing structure has excellent performance, overcomes the defect of single appearance of the traditional cylindrical bearing structure, and provides a new idea for the functional design of the bearing structure;
(2) The inner panel and the outer panel of the lattice sandwich cylindrical bearing structure are connected by the lattice sandwich structure, so that the weight of the bearing structure can be further reduced, and the mechanical property of the bearing structure can be ensured;
(3) The lattice sandwich cylindrical bearing structure is insensitive to local damage, high in damage resistance degree and high in reliability.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the installation of aluminum alloy beams and dot matrix sandwich cores;
FIG. 3 is an enlarged view of a portion of FIG. 2 at I;
FIG. 4 is a schematic view of the installation of aluminum alloy wire rings and aluminum alloy strands;
FIG. 5 is an enlarged view of a portion of FIG. 4 at II;
FIG. 6 is a schematic view of an upper metal frame;
FIG. 7 isbase:Sub>A schematic view in the direction A-A of FIG. 6;
FIG. 8 is a schematic view of a lower metal frame;
fig. 9 is a schematic view in the direction B-B in fig. 8.
In the figure: 1. the aluminum alloy sandwich structure comprises an upper metal frame, 2 parts of an outer panel, 3 parts of a lower metal frame, 4 parts of an inner panel, 5 parts of an aluminum alloy beam, 6 parts of a lattice sandwich, 5-1 parts of an installation groove, 6-1 parts of an aluminum alloy wire ring and 6-2 parts of an aluminum alloy strand.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The composite material lattice sandwich cylindrical bearing structure shown in fig. 1-9 comprises a main body, wherein the main body comprises a straight cylinder section and a conical cylinder section which are distributed up and down, the small end part of the conical cylinder section is connected with the straight cylinder section, and the diameter of the small end part is equal to that of the straight cylinder section; the main body comprises an outer panel 2 and an inner panel 4 which are arranged inside and outside, and a dot matrix sandwich 6 is clamped between the outer panel 2 and the inner panel 4;
the dot matrix sandwich 6 comprises a plurality of horizontally arranged aluminum alloy wire rings 6-1, the aluminum alloy wire rings 6-1 are saw-toothed polygonal aluminum alloy wire rings, and two adjacent aluminum alloy wire rings 6-1 are arranged in a staggered mode; the outer edge of the aluminum alloy wire ring 6-1 is connected with a sawtooth-shaped aluminum alloy strand 6-2, the joint of the aluminum alloy wire ring 6-1 and the aluminum alloy strand 6-2 adopts a cross clamping groove connecting structure, and each joint unit of the lattice sandwich 6 is pyramid-shaped.
The composite material lattice sandwich cylindrical bearing structure also comprises an upper metal frame 1 and a lower metal frame 3, wherein the upper metal frame 1 covers the top end part of the straight barrel section, and the lower metal frame 3 covers the bottom end part of the conical barrel section.
The composite material lattice sandwich cylindrical bearing structure also comprises an aluminum alloy beam 5, wherein the aluminum alloy beam 5 is positioned in the straight cylinder section, and the lattice sandwich 6 of the straight cylinder section is clamped and connected with the aluminum alloy beam 5; the straight cylinder section is provided with a plurality of openings, the openings are positioned on the outer panel 2, and the aluminum alloy beam 5 is arranged corresponding to the openings; the aluminum alloy beam 5 is provided with an installation groove 5-1, and the installation groove 5-1 is embedded into the dot matrix sandwich 6.
The inner side and the outer side of the dot matrix sandwich 6 are respectively connected with the outer panel 2 and the inner panel 4 through adhesives.
The manufacturing process of the composite material lattice sandwich cylindrical bearing structure comprises the following steps:
(1) The dot matrix sandwich 6 is manufactured by a stamping-embedding process, the aluminum alloy wire ring 6-1 and the aluminum alloy strand 6-2 are respectively formed by punching an aluminum alloy plate, a buckle is arranged at a node of the aluminum alloy wire ring 6-1 and the aluminum alloy strand 6-2, then the aluminum alloy strand 6-2 and the aluminum alloy wire ring 6-1 are vertically spliced, and finally the dot matrix sandwich is spliced, wherein each unit of the dot matrix sandwich 6 is pyramid-shaped, and the node is a cross plane; at the transition part of the lattice sandwich conical barrel section and the straight barrel section, the aluminum alloy strand wires 6-2 are formed in one step by punching instead of adopting other connection forms, which is beneficial to improving the strength of the connection part of the lattice sandwich cylindrical bearing structure. In the dot matrix sandwich conical barrel section, the diameter of the aluminum alloy wire ring 6-1 is gradually increased along with the enlargement of the conical barrel;
(2) In order to ensure the structural strength of the opening of the composite material lattice sandwich cylindrical force-bearing structure, 3 aluminum alloy beams 5 are arranged for reinforcing the opening; the aluminum alloy beam 5 is integrally in a hollow circular ring shape, and in order to be embedded into the dot matrix sandwich structure, the aluminum alloy beam 5 is uniformly provided with mounting grooves 5-1; the method can improve the strength of the opening part and increase the shear strength of the whole structure;
(3) The composite material lattice sandwich cylindrical bearing structure has a finished internal structure, and then the outer panel 2, the inner panel 4 and the lattice sandwich 6 are connected in an adhesive mode;
(4) The upper metal frame 1 is arranged at the top of the straight cylinder section, and the lower metal frame 3 is arranged at the bottom of the conical cylinder section, so that a complete composite material lattice sandwich cylindrical bearing structure is formed.
The composite material lattice sandwich cylindrical bearing structure consists of a straight cylinder section and a conical cylinder section, the weight of the internal interlayer is reduced by adopting a pyramid lattice sandwich structure, the aluminum alloy beam 5 is embedded in the position of the opening, and the metal frames are connected to the upper end surface and the lower end surface of the cylindrical bearing structure, so that the connection strength is enhanced.
While particular embodiments of the present invention have been described in the foregoing specification, various modifications and alterations to the previously described embodiments will become apparent to those skilled in the art from this description without departing from the spirit and scope of the invention.
Claims (6)
1. A composite material lattice sandwich cylindrical bearing structure is characterized in that: the device is provided with a main body, wherein the main body comprises a straight cylinder section and a conical cylinder section which are distributed up and down, the small end part of the conical cylinder section is connected with the straight cylinder section, and the diameter of the small end part is equal to that of the straight cylinder section; the main body comprises an outer panel (2) and an inner panel (4) which are arranged inside and outside, and a dot matrix sandwich (6) is clamped between the outer panel (2) and the inner panel (4);
the dot matrix sandwich (6) comprises a plurality of horizontally arranged aluminum alloy wire rings (6-1), the aluminum alloy wire rings (6-1) are saw-toothed polygonal aluminum alloy wire rings, and two adjacent aluminum alloy wire rings (6-1) are arranged in a staggered mode; the outer edge of the aluminum alloy wire ring (6-1) is connected with a sawtooth-shaped aluminum alloy strand silk (6-2), the joint of the aluminum alloy wire ring (6-1) and the aluminum alloy strand silk (6-2) adopts a cross clamping groove connecting structure, and each joint unit of the lattice sandwich (6) is pyramid-shaped;
the bearing structure also comprises an aluminum alloy beam (5), the aluminum alloy beam (5) is positioned in the straight cylinder section, and the dot matrix sandwich (6) of the straight cylinder section is clamped and connected with the aluminum alloy beam (5); the aluminum alloy beam (5) is integrally in a hollow circular ring shape, an installation groove (5-1) is formed in the aluminum alloy beam (5), and the installation groove (5-1) is embedded into the dot matrix sandwich core (6).
2. The composite material lattice sandwich cylindrical bearing structure of claim 1, which is characterized in that: the device is characterized by further comprising an upper metal frame (1) and a lower metal frame (3), wherein the upper metal frame (1) is covered at the top end of the straight cylinder section, and the lower metal frame (3) is covered at the bottom end of the conical cylinder section.
3. The composite material lattice sandwich cylindrical bearing structure of claim 1, which is characterized in that: the inner side and the outer side of the dot matrix sandwich (6) are respectively connected with the outer panel (2) and the inner panel (4) through adhesives.
4. The composite material lattice sandwich cylindrical force-bearing structure of claim 1, which is characterized in that: the straight cylinder section is provided with a plurality of holes, the holes are located on the outer panel (2), and the aluminum alloy beam (5) is arranged corresponding to the holes.
5. The composite material lattice sandwich cylindrical bearing structure of claim 1, which is characterized in that: at the transition part of the conical barrel section and the straight barrel section, the aluminum alloy strand silk (6-2) is formed in one step by stamping; in the cone section, the diameter of the aluminum alloy wire ring (6-1) is gradually increased along with the enlargement of the cone.
6. The composite material lattice sandwich cylinder force-bearing structure of claim 1, characterized in that: the directions of the adjacent clamping grooves are opposite along the circumferential direction of the aluminum alloy wire ring (6-1); along the extension direction of the aluminum alloy filament (6-2), the directions of the adjacent clamping grooves are opposite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111004116.9A CN113858717B (en) | 2021-08-30 | 2021-08-30 | Composite material lattice sandwich cylindrical bearing structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111004116.9A CN113858717B (en) | 2021-08-30 | 2021-08-30 | Composite material lattice sandwich cylindrical bearing structure |
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| CN113858717A CN113858717A (en) | 2021-12-31 |
| CN113858717B true CN113858717B (en) | 2023-02-28 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358048A (en) * | 2011-08-03 | 2012-02-22 | 哈尔滨工业大学 | Preparation process for pyramid lattice sandwich structure |
| CN102416716A (en) * | 2011-09-29 | 2012-04-18 | 哈尔滨工业大学 | Pyramidal dot matrix core material with foam sandwich beam and preparation technology of core material |
| CN104827602A (en) * | 2015-04-22 | 2015-08-12 | 哈尔滨工业大学 | Truss-like core sandwich structure |
| CN105128412A (en) * | 2015-08-14 | 2015-12-09 | 大连理工大学 | Sandwich structure with mesh reinforced honeycomb core body |
| CN205112548U (en) * | 2015-09-09 | 2016-03-30 | 西安理工大学 | Light composite lattice battenboard |
| CN109016697A (en) * | 2018-06-28 | 2018-12-18 | 西安交通大学 | A kind of foam-ripple composite lattice metal sandwich Conical Shells With and preparation method |
| CN110861790A (en) * | 2019-10-31 | 2020-03-06 | 上海宇航系统工程研究所 | Pure lattice force bearing cylinder |
-
2021
- 2021-08-30 CN CN202111004116.9A patent/CN113858717B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102358048A (en) * | 2011-08-03 | 2012-02-22 | 哈尔滨工业大学 | Preparation process for pyramid lattice sandwich structure |
| CN102416716A (en) * | 2011-09-29 | 2012-04-18 | 哈尔滨工业大学 | Pyramidal dot matrix core material with foam sandwich beam and preparation technology of core material |
| CN104827602A (en) * | 2015-04-22 | 2015-08-12 | 哈尔滨工业大学 | Truss-like core sandwich structure |
| CN105128412A (en) * | 2015-08-14 | 2015-12-09 | 大连理工大学 | Sandwich structure with mesh reinforced honeycomb core body |
| CN205112548U (en) * | 2015-09-09 | 2016-03-30 | 西安理工大学 | Light composite lattice battenboard |
| CN109016697A (en) * | 2018-06-28 | 2018-12-18 | 西安交通大学 | A kind of foam-ripple composite lattice metal sandwich Conical Shells With and preparation method |
| CN110861790A (en) * | 2019-10-31 | 2020-03-06 | 上海宇航系统工程研究所 | Pure lattice force bearing cylinder |
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