CN114635538A - Sandwich composite floor and floor connecting structure - Google Patents
Sandwich composite floor and floor connecting structure Download PDFInfo
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- CN114635538A CN114635538A CN202210336944.0A CN202210336944A CN114635538A CN 114635538 A CN114635538 A CN 114635538A CN 202210336944 A CN202210336944 A CN 202210336944A CN 114635538 A CN114635538 A CN 114635538A
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- Prior art keywords
- floor
- insert
- core
- panel
- strips
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- 239000002131 composite material Substances 0.000 title claims abstract description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000006261 foam material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/02038—Flooring or floor layers composed of a number of similar elements characterised by tongue and groove connections between neighbouring flooring elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/102—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials of fibrous or chipped materials, e.g. bonded with synthetic resins
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/107—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials composed of several layers, e.g. sandwich panels
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a sandwich composite floor and a floor connecting structure. The invention can enhance the maximum bearing capacity, tensile strength and compressive strength of the floor, further improve the structural strength of the sandwich composite floor, reduce the splicing difficulty of the floor and enhance the connection stability of the floor.
Description
Technical Field
The invention relates to the technical field of light-weight floors of railway vehicles, in particular to a sandwich composite floor and a floor connecting structure.
Background
In the design concept of light weight of the vehicle body of the railway vehicle, weight reduction and resistance reduction are key design indexes, and the adoption of a light base material for manufacturing the floor is one of effective ways for reducing the weight of the vehicle body. For example, CN212733891U discloses a phenolic composite multilayer sandwich board which has excellent flame retardant, low density and acoustic properties, and meets the requirements of fire prevention and sound insulation of railway vehicles, but the board has the problems of low bearing capacity and need to enhance compressive strength and tensile strength, and the structural strength of the manufactured floor cannot completely meet the design requirements of railway vehicles. The CN205116648U discloses wood floor, designs the frame that has stuff concatenation core board, by the axial concatenation of many short stuff, mainly as the architectural decoration material of non-structural material, does not give full consideration to rail vehicle's fire-retardant, sound insulation design requirement, and structural strength also waits to promote.
Compared with aluminum floor, the technical difficulty of splicing the light base material floor is correspondingly increased, the method that the connecting plate is arranged at the lower part of the flush edge of the floor and fixedly connected with the flush edge through the bolt disclosed in CN212828036U is not completely preferable, because the connecting plate and the floor generate friction due to severe vibration in the process of high-speed running of a vehicle, uncomfortable abnormal sound is generated, and the comfort level of the vehicle is reduced. The subway vehicle floor structure and the installation optimization shallow analysis thereof propose a scheme of embedding a fastening steel plate in a floor core part to reduce abnormal sound, but the scheme has the problems that the steel plate is arranged in the core part to cause the stability of a connecting structure to be deteriorated, and the steel plate and bolts gradually loosen along with the vibration of a vehicle body until the bolts fall off to hide potential safety hazards.
Therefore, it is known that improving the structural strength of the floor and optimizing the floor connection structure are one of the important research subjects for designing the rail vehicle.
Disclosure of Invention
Aiming at the technical problems that the structural strength of a sandwich floor is not high and the splicing difficulty is higher than that of an aluminum floor, the invention provides a technical scheme of a sandwich composite floor and a floor connecting structure, so that the bearing capacity of the floor is enhanced, the tensile strength and the compressive strength of the floor are improved, the structural strength of the floor is comprehensively improved, meanwhile, the consumption of floor materials is saved, and resources are saved; the connecting structure of the floor is optimized, the floor splicing difficulty is reduced, and the assembling efficiency of the floor is improved; the stepped connecting structure can be disassembled for maintenance, and the floor maintenance cost is reduced.
A sandwich composite floor comprises a panel structure and a core plate structure, wherein the core plate structure is formed by combining turning core strips.
The core strips are converted by 90 degrees and are arranged in parallel.
The core strip is a long core strip which is cut into a length with the thickness of 14.70-15.00 mm and the width of 14.50-15.00 mm.
The thickness of the core strip is preferably 14.90mm and the width is preferably 14.50 mm.
The core may be transverse or longitudinal.
The core strips are converted to be arranged in parallel and combined at 90 degrees, namely the cutting surfaces correspond to the panel structure and are subjected to 90-degree position change relative to the initial position.
The adjacent core strips and the core strips are bonded with the panel structure through adhesive.
The adhesive is preferably polyurethane adhesive, and the gluing thickness is 0.20-0.80 mm.
The core strip is made of phenolic foam material.
The panel structure comprises an upper panel structure and a lower panel structure.
The upper panel structure thickness is 1.80 ~ 2.10mm, preferably 2.00 mm.
The lower panel structure has a thickness of 0.94-1.10mm, preferably 1.00 mm.
The panel structure is preferably an epoxy material.
The floor connecting structure is an insert and comprises an upper insert and a lower insert.
The upper insert and the lower insert are connected in a matched mode to form a step type structure, the upper insert is provided with a bolt opening structure, the lower insert is provided with a bolt sleeve opening, the upper insert and the lower insert are fixedly connected through a bolt, and the step type structure and the panel structure are in isoplanar edging.
The insert is made of aluminum or engineering plastics, and preferably made of aluminum.
The space of the upper part of the connecting structure which is not fully matched is filled with putty, so that floor cloth can be conveniently paved on the surface of the upper panel structure.
The upper insert and the lower insert are respectively embedded in the core plate, and the embedded part in the core plate is of a hollow structure, so that the core plate is prevented from being damaged due to vibration of a vehicle body, and the total weight of the floor is not increased; the upper end face and the lower end face of the hollow core of the insert, which are close to the end parts, are provided with grooves, so that the insert is convenient to fasten.
The beneficial effects of the invention are as follows:
compared with the integrated design of the conventional sandwich floor, the invention cuts the foam material of the whole plate into a plurality of systematic core strips, changes the direction and combines the core strips, and bonds the core strips into the plate again, thereby realizing the effect that 1+1 is more than 2.
Compared with the integrated design of the conventional sandwich floor, the core strip combination and bonding method increases the usage amount of the adhesive, namely, the number of the elastic ribs solidified by the adhesive in the floor is increased, so that the impact force caused by the vibration of a vehicle body can be effectively relieved, the damage to the floor caused by the external impact force is reduced, the maximum bearing capacity and the resistance of the floor are improved, and the structural strength of the floor is improved.
The whole core board is cut and assembled again in strips, so that the floor materials can be saved, and the production cost is reduced.
Because the core plate structure of the sandwich floor is of a foam structure, the installation and the fixation of bolts are not facilitated, and the bolts are easy to loosen even if the bolts are successfully installed.
Drawings
FIG. 1 is a schematic view of a turning core assembly in accordance with the present invention.
In the figure: a: upper panel structure, B: core plate structure, C: a lower panel structure.
Fig. 2 is a schematic view of a core strip of a conventional sandwich floor.
In the figure: d: upper panel, E: core board, F: a lower panel.
Fig. 3 is a schematic view of a floor connection structure.
In the figure: 1: floor, 2: upper insert, 3: bolt, 4: screw sleeve, 5: lower insert, 6: floor support structure, 7: shock-absorbing structure, 8: the putty powder fills the space.
Fig. 4 is a schematic plan view of floor splicing.
Fig. 5 is a schematic view of an insert involved in the embodiment.
Detailed Description
The invention will be further described with reference to specific embodiments and drawings.
The sandwich floor is characterized by comprising an upper panel (A), a core panel (B) and a lower panel (C) from top to bottom in sequence, wherein the length of the sandwich floor is 3020mm, the width of the sandwich floor is 1200mm, the thickness of the sandwich floor is 18.3mm, the upper panel is 2mm, the lower panel is 1mm, the core panel is 14.9mm, the width of the sandwich floor is 14.5mm, the core panel and the panel as well as the core panel and the core panel are fixedly bonded through a polyurethane adhesive, and the thickness of an adhesive tape is 0.2 mm.
The upper panel and the lower panel are both made of epoxy resin materials, the core board is made of phenolic foam materials, and the core board is composed of 80 core strips.
Two floor boards are spliced, two aluminum inserts (figure 5) are respectively embedded into the end parts of the core boards, wherein the upper end part of one insert is cut off, the lower end part of the other insert is cut off, and the cut parts are equal in length, so that the next step of splicing is facilitated. Overlapping and splicing the two inserts to form a step structure; and finally, the bolt is matched and fastened with the threaded sleeve, and splicing is completed.
The load-bearing capacity, tensile strength, and compressive strength properties of the example flooring are compared to conventional sandwich flooring in table 1.
TABLE 1 Performance index comparison Table
| Performance index | Maximum carrying capacity/KN/m2 | Tensile strength/MPa | Compressive strength/MPa |
| Example floor | 7 | ＞4 | ＞6 |
| Conventional floor | 4 | 2 | 2 |
Claims (5)
1. A sandwich composite floor comprises a panel structure and a core plate structure, and is characterized in that the core plate structure is formed by combining turning core strips.
2. The floor board as claimed in claim 1, wherein the direction-changing core strips are converted by 90 ° and arranged side by side in combination, the thickness of the core strips is 14.70-15.00 mm, and the width of the core strips is 14.50-15.00 mm.
3. The floor panel of claim 1, wherein the core strips are phenolic foam and are adhesively bonded in a modular arrangement.
4. The floor connecting structure of the sandwich composite floor is an insert and comprises an upper insert and a lower insert, and is characterized in that the upper insert and the lower insert are connected in a matching mode to form a step structure, the upper insert is provided with a bolt opening, the lower insert is provided with a bolt sleeve opening, the upper insert and the lower insert are fixedly connected through a bolt, and the step structure and a panel structure are flush.
5. The connecting structure according to claim 4, wherein the upper insert and the lower insert are respectively embedded in the core plate, the embedded part in the core plate is a hollow structure, and the upper end surface and the lower end surface of the hollow core of the insert, which are close to the end parts, are provided with grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210336944.0A CN114635538A (en) | 2022-04-01 | 2022-04-01 | Sandwich composite floor and floor connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210336944.0A CN114635538A (en) | 2022-04-01 | 2022-04-01 | Sandwich composite floor and floor connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114635538A true CN114635538A (en) | 2022-06-17 |
Family
ID=81952485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210336944.0A Pending CN114635538A (en) | 2022-04-01 | 2022-04-01 | Sandwich composite floor and floor connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635538A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263476A (en) * | 2004-03-22 | 2005-09-29 | Hitachi Building Systems Co Ltd | Tension adding device for main rope replacement work for elevator |
| JP2006062499A (en) * | 2004-08-26 | 2006-03-09 | Hino Motors Ltd | Module structure of load-carrying platform floor |
| CN101067343A (en) * | 2007-04-10 | 2007-11-07 | 南京工业大学 | Grid structural reinforced composite material sandwich structure |
| CN203473027U (en) * | 2013-09-05 | 2014-03-12 | 江阴协统汽车附件有限公司 | Glass fiber reinforced PU (polyurethane)/PP (Polypropylene) honeycomb core composite car floorboard |
| CN205219959U (en) * | 2015-12-22 | 2016-05-11 | 株洲时代新材料科技股份有限公司 | Fire -retardant light reinforcing structure battenboard |
| CN210555173U (en) * | 2019-07-10 | 2020-05-19 | 上海佑望科技发展有限公司 | High-strength floor for minibus |
| CN212725494U (en) * | 2020-08-18 | 2021-03-16 | 杭州卡涞复合材料科技有限公司 | Connecting structure for frame and bottom plate of automobile composite material battery box |
| CN215551650U (en) * | 2021-07-14 | 2022-01-18 | 广东航科新材料有限公司 | Lapping structure of composite board |
-
2022
- 2022-04-01 CN CN202210336944.0A patent/CN114635538A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005263476A (en) * | 2004-03-22 | 2005-09-29 | Hitachi Building Systems Co Ltd | Tension adding device for main rope replacement work for elevator |
| JP2006062499A (en) * | 2004-08-26 | 2006-03-09 | Hino Motors Ltd | Module structure of load-carrying platform floor |
| CN101067343A (en) * | 2007-04-10 | 2007-11-07 | 南京工业大学 | Grid structural reinforced composite material sandwich structure |
| CN203473027U (en) * | 2013-09-05 | 2014-03-12 | 江阴协统汽车附件有限公司 | Glass fiber reinforced PU (polyurethane)/PP (Polypropylene) honeycomb core composite car floorboard |
| CN205219959U (en) * | 2015-12-22 | 2016-05-11 | 株洲时代新材料科技股份有限公司 | Fire -retardant light reinforcing structure battenboard |
| CN210555173U (en) * | 2019-07-10 | 2020-05-19 | 上海佑望科技发展有限公司 | High-strength floor for minibus |
| CN212725494U (en) * | 2020-08-18 | 2021-03-16 | 杭州卡涞复合材料科技有限公司 | Connecting structure for frame and bottom plate of automobile composite material battery box |
| CN215551650U (en) * | 2021-07-14 | 2022-01-18 | 广东航科新材料有限公司 | Lapping structure of composite board |
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