CN112141226B - Method for assembling composite material lightweight electronic shelter - Google Patents
Method for assembling composite material lightweight electronic shelter Download PDFInfo
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- CN112141226B CN112141226B CN202010893969.1A CN202010893969A CN112141226B CN 112141226 B CN112141226 B CN 112141226B CN 202010893969 A CN202010893969 A CN 202010893969A CN 112141226 B CN112141226 B CN 112141226B
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- outer skin
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- 239000002131 composite material Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 31
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- 238000000465 moulding Methods 0.000 claims abstract description 9
- 239000003292 glue Substances 0.000 claims abstract description 7
- 238000013329 compounding Methods 0.000 claims abstract description 5
- 238000007731 hot pressing Methods 0.000 claims abstract description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 8
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- 239000000853 adhesive Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 238000002788 crimping Methods 0.000 claims description 2
- 229910001234 light alloy Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 7
- 239000011162 core material Substances 0.000 description 5
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- 229920005989 resin Polymers 0.000 description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
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- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
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- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D27/00—Connections between superstructure or understructure sub-units
- B62D27/02—Connections between superstructure or understructure sub-units rigid
- B62D27/023—Assembly of structural joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
Abstract
The invention discloses a method for assembling a composite material lightweight electronic shelter, which comprises the following steps: 1) skin manufacturing: selecting prepreg, paving and pasting the prepreg on a mould, bagging, vacuumizing, and then carrying out curing molding through an autoclave process to obtain an inner skin and an outer skin; 2) frame manufacturing: splicing a plurality of composite square tubes into a square frame according to set parameters, connecting the square tubes around the frame through connecting pieces, and filling gaps among the frames with foam plates; 3) skin compounding: the inner skin and the outer skin are covered and pasted on two sides of the frame through glue, and then the frame is bagged, vacuumized and cured and formed through a hot-pressing tank process to obtain a large plate; 4) assembling a large plate: the first large plate and the second large plate are assembled and fixedly connected through the rivets, and the assembly of the shelter is completed by the six large plates in the form of the assembly of the first large plate and the second large plate.
Description
Technical Field
The invention relates to a shelter, in particular to a shelter assembling method.
Background
The traditional metal large-plate shelter usually adopts aluminum material skins, foam core materials and a framework which are mostly made of aluminum materials, and various firm materials are combined, so that a safe and reliable working environment can be provided for loading equipment and personnel in the shelter, but the metal material density is high, the total weight of the shelter body is heavy, and the assembly of effective equipment of a vehicle is seriously limited;
the large plate shelter is still required to be provided with aluminum alloy covered edges and wrap corners inside and outside after the large plate is spliced for ensuring enough strength, the weight of the aluminum alloy profile is heavy, and the aluminum alloy profile surrounds four covered edges around the top plate, so that the top plane is lower than the periphery, accumulated water is easily generated, and even the situation of local water seepage is caused. The prior art discloses an integrated integrally-formed light shelter made of a resin-based composite material and a manufacturing method thereof; the publication number is: CN 108716292 a, this solution has the above water seepage problem.
Disclosure of Invention
The invention aims to provide a method for assembling a composite material light-weight electronic shelter, which aims to solve the problems of heavy weight and water accumulation at the top of the shelter in the prior art.
The purpose of the invention is realized as follows: a composite material light-weight electronic shelter assembling method is characterized in that a shelter is formed by assembling six large plates, each large plate comprises a frame formed by assembling a plurality of composite square tubes, foam is filled in the frame, an outer skin is paved outside the frame, and an inner skin is paved inside the frame; the two large plates which are assembled together are respectively a first large plate and a second large plate, the outer skin at the assembling end of the first large plate extends outwards to form an outer skin flanging exceeding the thickness of the large plate, and the outer skin at the assembling end of the second large plate is provided with an outer skin step for overlapping the outer skin flanging, wherein the assembling method comprises the following steps:
1) skin manufacturing: selecting prepreg according to set parameters to be paved, bagged and vacuumized on a mould, and then carrying out curing molding through an autoclave process to obtain an inner skin and an outer skin, wherein the prepreg is used for paving the outer skin of the first large plate and outwards extending and processing the corresponding splicing end to form an outer skin flanging exceeding the thickness of the large plate;
2) frame manufacturing: splicing a plurality of composite square tubes into a square frame according to set parameters, connecting the square tubes around the frame through connecting pieces, and filling gaps among the frames with foam plates; the size of the composite square tubes on the periphery of the frame for manufacturing the second large plate is smaller than that of the composite square tubes in the middle, and when the frame is spliced, the composite square tubes on the periphery are flush with one side of the composite square tubes in the middle, and a height difference is reserved on the other side of the composite square tubes to form a step surface;
3) skin compounding: the inner skin and the outer skin are covered and paved on two sides of the frame through glue, then bagging, vacuumizing and curing molding are carried out through a hot-pressing tank process to obtain a large plate, and when the first large plate is paved and paved, the flanging of the outer skin on the periphery of the large plate exceeds the surface of the frame; when the second large plate is paved, the outer skin is paved on the surface of the frame with the step surface, and the outer skin is paved on the step surface;
4) assembling a large plate: assembling the first large plate and the second large plate, crimping the surface edge of the inner skin of the first large plate on the side surface of the second large plate, overlapping the flanging of the outer skin of the first large plate on the step surface of the second large plate, fixedly connecting the flanging of the outer skin of the first large plate with the step surface of the second large plate through rivets, and completing the assembly of the shelter by the six large plates in the form of assembling the first large plate and the second large plate.
As a further limitation of the invention, when the frame is manufactured in the step 2), the size of the composite square pipe at the periphery of the frame for manufacturing the first large plate is smaller than that of the composite square pipe at the middle part, and a height difference is reserved between the skin paving surface of the composite square pipe at the periphery and the skin paving surface of the composite square pipe at the middle part to form a step surface; when the inner skin of the first large plate is manufactured, the thickness of the inner skin paved and attached to the periphery of the composite square pipe at the assembling end of the first large plate is larger than that of the inner skins at other positions. The increase in skin thickness here makes the structural strength of splice end better, and the joint strength of concatenation department is higher simultaneously.
As a further limitation of the invention, in the step 1), when the inner skin of the first large plate is manufactured, the thickness of the inner skin at the position close to the composite square pipe at the assembling end of the first large plate is also larger than the thickness of the inner skin at other positions, and a height difference is left between the inner skin and the inner skin attached to the composite square pipe to form a step, in the step 4), when the outer skin is assembled, a corner fitting is arranged at the joint of the first large plate and the inner skin of the second large plate after the overlapping of the outer skins is completed, and the corner fitting is fixed on the square pipe of the second large plate and the inner skin of the first large plate through rivets. This design improves the intensity of junction, and is more convenient when making first big board and the concatenation of the big board of second simultaneously.
As a further limitation of the invention, the prepreg in the step 1) is prepared by matching carbon fibers with solvent-free resin.
As a further limitation of the invention, the joint of the connecting piece and the composite square tube in the step 2) is coated with epoxy structural adhesive and fixed by a rivet. The design improves the connecting strength between the connecting piece and the composite square pipe.
As a further limitation of the present invention, when the foam board is filled in the frame in step 2), the gaps between the foam board and the frame are filled with the curing adhesive. This design improves the overall strength of the large panel.
As a further limitation of the invention, in the step 1), when the skin is laid, a layer of copper mesh is laid finally. This design improves the shielding performance of the large panel.
Compared with the prior art, the invention has the beneficial effects that:
(1) the skin sandwich structure manufactured by the invention has lighter weight and the strength can meet the use requirement;
(2) according to the invention, when a skin resin system is selected, a solvent-free resin system is preferably selected, so that the influence of a solvent is reduced; the curing type is addition polymerization type, a high-density molecular structure with larger chemical bond energy can be formed, small molecular gas products are less generated, active functional groups are less remained, and the secondary chemical reaction is difficult to occur; the resin casting has better toughness, and the elongation at break is preferably more than 5 percent so as to reduce the deformation of products or the stress failure of fiber interfaces;
(4) selecting a prepreg and autoclave molding process, wherein the molding process can be used for vacuumizing and degassing and applying uniform external pressure, removing residual gas in the composite material and enabling the molded skin to be uniform in thickness;
(5) the composite material skin shielding layer adopts a double-layer metal mesh, and meanwhile, the carbon fiber is also a conductive material, so that the electromagnetic shielding efficiency is better ensured;
(6) the large plates are in a lap joint buckling structure, and the composite skin at the lap joint is locally thickened, so that the connection strength of the cabin body is ensured, the reinforcing parts such as edge wrapping, corner wrapping and the like are also omitted, and the weight is reduced.
Drawings
FIG. 1 is a flow chart of the present invention.
Fig. 2 is a schematic view of a cubic structure of the shelter manufactured by the invention.
Fig. 3 is a top view of a shelter made in accordance with the present invention.
Fig. 4 is a sectional view taken along a-a in fig. 3.
Fig. 5 is an enlarged view of fig. 4 at B.
Fig. 6 is an enlarged view of fig. 4 at C.
Fig. 7 is a schematic structural view of a shelter roof frame made according to the present invention.
The composite material comprises a top plate 1, an outer skin 11, an outer skin 111, an outer skin flanging 112, an inner skin 12, an inner skin 121, an inner skin 122, a composite square pipe 13 and 131, foam 14, a tenon 15L-shaped, a panel 2, an outer skin 21, an outer skin 211, an outer skin step 22, an inner skin 231, a composite square pipe 3, a metal corner fitting 4 and a corner fitting 5L.
Detailed Description
The method for assembling the composite material lightweight electronic shelter shown in the figure 1 comprises the following steps:
1) skin manufacturing: selecting prepreg according to set parameters to be paved, bagged and vacuumized on a mould, wherein the prepreg is prepared from carbon fiber matched solvent-free resin, and then carrying out curing molding through an autoclave process to obtain an inner skin 12 and an outer skin 11 (taking a top plate 1 as an example), wherein the outer skin used for paving the outer skin of the top plate 1 extends outwards at the corresponding splicing end to form an outer skin flanging exceeding the thickness of a large plate, and when the outer skin 11 of the top plate 1 is manufactured, the thickness of the outer skin 111 and the thickness of the flanging 112 paved on the periphery of a composite square tube 13 at the splicing end of the top plate 1 are larger than those of the outer skins at other positions; when the inner skin 12 of the top plate 1 is manufactured, the thickness of the inner skin 121 laid on the periphery of the composite square tube at the assembling end of the top plate 1 is larger than that of the inner skins at other positions, and the thickness of the inner skin 122 close to the composite square tube at the assembling end of the top plate 1 is also larger than that of the inner skins at other positions;
2) frame manufacturing: as shown in fig. 6-7, a plurality of composite square pipes 13 and 131 are spliced into a square frame according to set parameters, the square pipes 131 around the frame are connected through an L-shaped tenon 15, the joint of the L-shaped tenon 15 and the composite square pipe 131 is coated with epoxy structural adhesive and fixed by a rivet, a gap between the frames is filled with foam 14, and cured adhesives are filled in the gap between the foam 14 and the frames; the specification of the composite square pipe 231 on the periphery of the frame for manufacturing the panel 2 is smaller than that of the composite square pipe 23 in the middle, when the panel is spliced, the composite square pipe 231 on the periphery is flush with one side of the composite square pipe 23 in the middle, the other side of the composite square pipe is provided with a height difference to form a step surface, the composite square pipe 131 on the periphery of the frame for manufacturing the top plate 1 is smaller than that of the composite square pipe 13 in the middle, and the height difference is provided between the skin paving surfaces of the composite square pipe 131 on the periphery and the composite square pipe 13 in the middle to form a step surface;
3) skin compounding: taking the top plate 1 as an example, the inner skin 12 and the outer skin 11 are covered and paved on two sides of the frame through glue, then bagging, vacuumizing and curing and forming are carried out through the autoclave process to obtain a large plate, and when the top plate 1 is paved, the peripheral flanging 112 of the outer skin all exceed the surface of the frame; when the panel 2 is paved, the outer skin 21 is paved on the surface of the frame with the step surface 211, and the outer skin 21 is paved on the step surface 211;
4) assembling a large plate: the roof 1 and the panel 2 are assembled, the step surface at the position of the inner skin 121 of the roof 1 is pressed on the side surface of the panel 2, the outer skin flanging 112 of the roof 1 is lapped on the step surface 211 of the panel 2 and is fixedly connected with the panel through rivets, the L-shaped corner piece 5 is arranged at the joint of the inner skin 121 of the roof 1 and the inner skin 22 of the panel 2 after the outer skin flanging 112 is lapped, the L-shaped corner piece is fixed on the square pipe 231 and the inner skin 121 of the panel 2 through rivets, and the bottom plate, the side plate and the panel 2 are assembled in the form of assembling the roof 1 and the panel 2.
As shown in fig. 2-7, the shelter manufactured according to the present invention includes a cabin assembled by six large panels, each large panel (taking a top plate as an example) includes a frame assembled by a plurality of composite square tubes 13, the composite square tubes 13 around the frame are connected by L-shaped tenons 15, the frame is filled with foam 14, an outer skin 11 is laid outside the frame, an inner skin 12 is laid inside the frame, and both the inner skin 12 and the outer skin 11 are made of composite materials; the two large plates which are assembled together are respectively a first large plate and a second large plate, when the top plate 1 (bottom plate) and the panel 2 are assembled, the top plate 1 (bottom plate) is used as the first large plate, and the panel 2 is used as the second large plate; when the top plate 1 (bottom plate) and the side plate 3 are assembled, the top plate 1 (bottom plate) is used as a first large plate, and the side plate 3 is used as a second large plate; when the side plate 3 and the panel 2 are assembled, both the side plate 3 and the panel 2 can be used as a first large plate or a second large plate; in the shelter manufacturing embodiment, the top plate 1 is taken as a first large plate, and the panel 2 is taken as a second large plate for explanation; the assembled ends of the top plate 1 and the panel 2 are respectively provided with a composite square tube 13 and 23, the outer skin 111 of the assembled end of the top plate 1 extends outwards to form an outer skin flanging 112 which exceeds the thickness of the large plate, the outer skin 21 of the assembled end of the panel 2 is provided with an outer skin step 211 for overlapping the outer skin flanging, the outer skin flanging 112 is overlapped on the outer skin step 211, through rivet fixed connection, the outer surface of the outer skin flanging 112 of the top plate 1 and the outer surface of the outer skin 21 of the panel 2 are positioned on the same plane, the thickness of the outer skin 111 and the thickness of the flanging 112 which are paved on the periphery of the assembled end composite square pipe 13 and 23 of the top plate 1 are larger than the thickness of the outer skin 11 at other positions, the thickness of the inner skin 121 which is paved on the periphery of the assembled end composite square pipe 13 of the top plate 1 is larger than the thickness of the inner skin 12 at other positions, and the thickness 122 of the inner skin which is close to the assembled end composite square pipe 13 of the top plate 1 is also larger than the thickness of.
The invention is further described below with reference to specific overall process flows and parameters.
(1) Mold design
According to the structural characteristics and the precision requirements of the shelter and the requirements of a material curing process, the structural design of a mould is carried out, and different parts adopt the structural design of moulds in different forms; therefore, the die design needs to meet the following conditions:
1) the tolerance of the molded surface is +/-0.1 mm, and the smooth finish of the molded surface reaches RS less than or equal to 1.6;
2) marking a product boundary scribing mark on the surface of the mold;
3) the mould is provided with the lifting ring and the bottom plate, so that the mould can be conveniently lifted, turned and the like;
4) the design wall thickness of the die is not less than 15mm, and the pressure bearing is not less than 0.8 MPa;
5) vacuumizing to at least-0.1 MPa for airtight, maintaining the pressure for 15-30min, wherein the positive pressure in the vacuum bag is not allowed to exceed 0.017 MPa;
according to the above requirements, the mold should have a sufficiently high strength and rigidity so that it will not be damaged or deformed when it is subjected to a molding load and thermal shock in a working state; therefore, the material of the die is 45# steel, so that the die has good comprehensive mechanical properties, almost the same mechanical properties at the working temperature and the room temperature, and good thermal fatigue resistance.
(2) Prepreg blanking
And manufacturing a blanking drawing of the skin sandwich structure layer through related modules of the software, and cutting the material sheet by using an automatic blanking machine.
(3) Mold preparation
When a new mold arrives at a factory, the oil seal of the mold needs to be removed (after the tool is cleaned by gasoline, the mold is cleaned by acetone for three times), then the molded surface of the mold is confirmed to be free from damage, and finally the reticle is confirmed. The release agent is required to be coated before the use every time, the new die is required to be wiped for 8-10 times, the interval of each time is 15min, and the used die is required to be wiped for 3 times.
(4) Manufacture of large panel skins
In order to ensure the accuracy of the laying angle and position of the prepreg in the laying process, the outline boundary of the prepreg cut piece is accurately positioned by means of a laser projection positioning instrument system and the marking positioning on the molded surface, and the prepreg is laid according to the outline boundary;
a) laying outer skin prepreg carbon cloth cut pieces in a mould, vacuumizing and pre-compacting once every 6 layers are laid, repeating the operation until the prepreg cloth layers for preparing the outer skin are laid, and finally laying a layer of copper mesh;
b) and finishing paving, bagging, vacuumizing, curing and forming in an autoclave, wherein the appearance and the flatness of the skin are ensured by a mold in the whole curing process.
(5) Assembly of large plate framework
The L-shaped tenon is formed by machining an aluminum alloy material, the framework is a carbon fiber square tube, the cross section area and the thickness of the framework are adjusted according to the total thickness and the strength of a large plate, the carbon fiber (composite) square tube is formed by a pultrusion process, the square tubes are connected by light alloy bent angle pieces, the size of the tenon and the size of the carbon fiber square tube meet the requirement of inserting, and then the connecting position is coated with A-1 double-component epoxy structural adhesive and riveted to ensure the connecting strength.
(6) Core material trimming and filling
And (3) finishing blanking of the core layer HD-305 polyurethane foam board by a cutting machine according to the size set by the drawing, and filling the blanking into each interval of the framework for later use.
(7) Pretreatment of orifice position of large plate
And pre-matching the inner and outer skins of each large plate with the assembled core material frame, polishing and finishing the edges of the skins and the positions of hole sites such as doors and windows, and ensuring that the positions of the frames are in butt joint with the positions of the openings on the skins.
(8) Large plate compounding
Place outside skin on the frock, the upper surface coating is glued, place for use's skeleton and core preparation spare on it, the upper surface rubber coating, place inside skin again on it, also guarantee simultaneously that foam core and the gap department of skeleton contact all fill resin or glued membrane etc. have the solidification, the material of adhesive action, in order to ensure the bulk strength of big board, place respectively on "sandwich structure big board surface this moment and take off leather clothing, behind barrier film and the ventilative felt, use seal and vacuum bag membrane to mould whole sealing, detect vacuum bag membrane gas tightness: the vacuum degree is required to be less than-0.095 MPa; and finally, curing in an autoclave: the temperature of the mould is raised to (130 +/-5) ℃ at the temperature rise rate of not higher than 2 ℃/min, the temperature is kept for 2 h-2.5 h under the condition, and then the temperature is lowered to below 45 ℃ at the temperature drop rate of not higher than 2 ℃/min, so that the product can be obtained by demoulding, and the quality inspection is finished.
(9) Cabin assembly
The four metal corner fittings 4 at the bottom are positioned by utilizing the lower positioning fixture, and the relative positions and the shape and position sizes of the corner fittings are ensured by the positioning blocks on the fixture;
fixing the bottom plate on a lower positioning type frame, positioning the bottom plate by using the accurately positioned metal corner fitting 4 and the raised plane stop block on the positioning type frame, and ensuring that the outer skin of the bottom plate is tightly attached to the lower surface of the metal corner fitting 4 and the plane stop block of the positioning type frame so as to ensure the planeness of the bottom plate and the verticality of the large plate and the metal corner fitting 4;
sequentially fixing a side plate 3 and a panel 2 on a lower positioning type frame according to the sequence of a left side plate 3, a right side plate 3, a front plate 2 and a rear plate 2, positioning the left side plate 3 and the right side plate 3 by using a metal corner piece 4 with accurate positioning and a bottom plate inner skin flanging, ensuring that outer skins of the left side plate 3 and the right side plate 3 sink to form steps to be attached to the bottom plate skin flanging, and tightly attaching the outer skins of the side plates 3 to the inner side surfaces of the metal corner pieces 4; after the position is determined, positioning initial holes are formed at the lap joint of the turnups between the adjacent large plates and the lap joint of the metal corner fittings 4 and the skin and are connected by positioning pins;
the top plate 1 is buckled on the connected side plate 3 and the connected panel 2, so that the skin step in the top plate 1 is tightly jointed with the tops of the side plate 3 and the panel 2, the upper metal corner fitting 4 is buckled at four corners of the top plate 1 in an inverted mode, finally, the upper positioning fixture is arranged on the top plate 1, the position of the upper metal corner fitting 4 is fixed through a fixture positioning hole, and the relative position of the upper metal corner fitting 4 is ensured to meet the theoretical requirement;
preparing initial connecting holes of the metal corner fittings 4 and each large plate, flanging the top plate 1 and the initial connecting holes of the side plates 3, fixing by using positioning pins, and then preparing final holes of the initial connecting holes at all positions; tapping on the large plate and installing a steel wire thread sleeve after expanding to a final hole at the joint of the metal corner fitting 4 and the large plate;
and (4) disassembling each large plate, putting the large plate on a frame, deburring the periphery of the hole, and cleaning and roughening the joint of each part. And assembling according to the preassembly sequence, coating XM-22 glue on the joint surface of each part for sealing, and coating XM-22 glue on the fastener for wet riveting. After the connection is finished, filling corners and sealing are carried out on the butt joint of each part by using a sealant if necessary so as to ensure the airtight and watertight requirements of the product;
door and window installation: the positioning of the door and the window is carried out through the door and window openings which are coordinately positioned when the framework is connected, and the connecting holes of the door, the window and the large plate are manufactured through the flange flanging of the door and the window. When the door and the window are installed, XM-22 glue is coated on the joint of the flange flanging and the large plate for sealing the binding surface, and sealant is coated on the rivet for wet riveting.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (5)
1. The assembling method of the composite material light-weight electronic shelter is characterized in that the shelter is formed by assembling six large plates, each large plate comprises a frame formed by assembling a plurality of composite square tubes, foam is filled in the frame, an outer skin is paved outside the frame, and an inner skin is paved inside the frame; the two large plates which are assembled together are respectively a first large plate and a second large plate, the outer skin at the assembling end of the first large plate extends outwards to form an outer skin flanging exceeding the thickness of the large plate, and the outer skin at the assembling end of the second large plate is provided with an outer skin step for overlapping the outer skin flanging, wherein the assembling method comprises the following steps:
1) skin manufacturing: selecting prepreg according to set parameters to be paved, bagged and vacuumized on a mould, and then carrying out curing molding through an autoclave process to obtain an inner skin and an outer skin, wherein the prepreg is used for paving the outer skin of the first large plate and outwards extending and processing the corresponding splicing end to form an outer skin flanging exceeding the thickness of the large plate; when the inner skin of the first large plate is manufactured, the thickness of the inner skin paved and attached to the periphery of the composite square pipe at the assembling end of the first large plate is larger than that of the inner skins at other positions;
2) frame manufacturing: the method comprises the following steps that a plurality of composite square pipes are spliced into a square frame according to set parameters, the square pipes around the frame are connected through connecting pieces, the connecting pieces are L-shaped tenons, the L-shaped tenons are machined and formed by adopting aluminum alloy materials, the square pipes are carbon fiber square pipes, the cross section area and the thickness of the square pipes are adjusted according to the total thickness and the strength of a large plate, the carbon fiber square pipes are formed by adopting a pultrusion process, the square pipes are connected through light alloy bent angle pieces, and then foam plates are used for filling gaps among the frames; the size of the composite square tubes on the periphery of the frame for manufacturing the second large plate is smaller than that of the composite square tubes in the middle, when the second large plate is spliced, the composite square tubes on the periphery are flush with one side of the composite square tubes in the middle, a height difference is reserved on the other side of the composite square tubes to form a step surface, when the frame is manufactured, the composite square tubes on the periphery of the frame for manufacturing the first large plate are smaller than that of the composite square tubes in the middle, and a height difference is reserved between the composite square tubes on the periphery and the skin paving surface of the composite square tubes in the middle to form a step surface;
3) skin compounding: the inner skin and the outer skin are covered and paved on two sides of the frame through glue, then bagging, vacuumizing and curing molding are carried out through a hot-pressing tank process to obtain a large plate, and when the first large plate is paved and paved, the flanging of the outer skin on the periphery of the large plate exceeds the surface of the frame; when the second large plate is paved, the outer skin is paved on the surface of the frame with the step surface, and the outer skin is paved on the step surface;
4) assembling a large plate: assembling the first large plate and the second large plate, crimping the surface edge of the inner skin of the first large plate on the side surface of the second large plate, overlapping the flanging of the outer skin of the first large plate on the step surface of the second large plate, fixedly connecting the flanging of the outer skin of the first large plate with the step surface of the second large plate through rivets, and completing the assembly of the shelter by the six large plates in the form of assembling the first large plate and the second large plate.
2. The assembling method according to claim 1, wherein in the step 1), when the inner skin of the first large plate is manufactured, the thickness of the inner skin at the position close to the assembling end composite square pipe of the first large plate is also larger than the thickness of the inner skin at other positions, a height difference is left between the inner skin and the inner skin attached to the composite square pipe to form a step, and in the step 4), when the outer skin is assembled, a corner piece is arranged at the joint of the first large plate and the inner skin of the second large plate after the overlapping of the outer skins is completed, and the corner piece is fixed on the square pipe of the second large plate and the inner skin of the first large plate through rivets.
3. The assembling method according to claim 1, wherein in the step 2), the joint of the connecting piece and the composite square tube is coated with epoxy structural adhesive and fixed through a rivet.
4. The assembly method according to claim 1, wherein in the step 2), when the foam board is filled in the frame, the gaps between the foam board and the frame are filled with the curing adhesive.
5. The assembly method according to claim 1, wherein a layer of copper mesh is laid at last when the skin is laid in the step 1).
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| KR100620366B1 (en) * | 2004-09-13 | 2006-09-19 | 홍원기 | Construction method of underground structures comprising composite reinforced concrete girders and beams using FRP |
| CN101590697A (en) * | 2008-05-28 | 2009-12-02 | 上海正安电工材料技术有限公司 | The one-step moulding method of article of fiber reinforced plastics and plastic products thereof under vacuum impregnation pressure |
| CN104085116A (en) * | 2014-06-16 | 2014-10-08 | 江苏恒神纤维材料有限公司 | Connection structure for carbon-fiber composite square cabin |
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| CN108716292B (en) * | 2018-05-09 | 2020-12-15 | 长沙晶优新材料科技有限公司 | Integrated integrally-formed light shelter made of resin-based composite material and manufacturing method thereof |
| CN109466405A (en) * | 2018-12-03 | 2019-03-15 | 航天科工武汉磁电有限责任公司 | A kind of multi-functional shelter of lightweight and its forming method |
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