CN216969654U - Integral forming structure of composite material window frame of cab - Google Patents
Integral forming structure of composite material window frame of cab Download PDFInfo
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- CN216969654U CN216969654U CN202122900367.7U CN202122900367U CN216969654U CN 216969654 U CN216969654 U CN 216969654U CN 202122900367 U CN202122900367 U CN 202122900367U CN 216969654 U CN216969654 U CN 216969654U
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- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 239000003733 fiber-reinforced composite Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 239000004593 Epoxy Substances 0.000 description 10
- 229920000049 Carbon (fiber) Polymers 0.000 description 6
- 239000004917 carbon fiber Substances 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000009998 heat setting Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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Abstract
The utility model discloses an integral forming structure of a composite material window frame of a cab, which comprises an upper window frame and a lower window frame; the upper window frame comprises a first upper continuous laying layer, a plurality of first preformed bodies and a first lower continuous laying layer; the lower window frame comprises a second upper continuous layer, a plurality of second preformed bodies and a second lower continuous layer; the upper window frame and the lower window frame are matched in shape, the first preformed body and the second preformed body are in one-to-one correspondence, the first preformed body section is provided with a threaded hole, the second preformed body section is provided with a threaded hole, and the two threaded holes are connected through a bolt and a threaded sleeve; the utility model effectively avoids the possible connecting welding seam of the traditional metal window frame, eliminates the influence of a welding heat affected zone and residual stress, and effectively improves the integral rigidity and strength of the window frame structure; the preform is used for segmented filling, so that the risks such as internal quality defects are effectively reduced.
Description
Technical Field
The utility model relates to the technical field of composite materials, in particular to an integral forming structure of a composite material window frame of a cab.
Background
With the continuous improvement of the running speed of the rail vehicle, the wind resistance of the high-speed train during running is obviously increased, so that the structural appearance of the cab with a low resistance coefficient is more urgently required. The windward side of the cab of the existing high-speed train is in a streamline shape with a complex three-dimensional curved surface, the position of a front window is a key position of the appearance of the cab, and the structural outline of the cab is more complex. Meanwhile, the front window frame needs to be provided with a streamline front windshield assembly, and the requirements on the structural strength, the appearance precision and the installation and maintenance of the window frame are all strict.
At present, a front window frame of a cab of a high-speed train is generally formed by integrally numerical control machining of an aluminum alloy section, the manufacturing difficulty is high, the machining cost is high, and the product percent of pass is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an integral forming structure of a composite material window frame of a cab aiming at the defects in the prior art.
The technical scheme for solving the problems comprises the following steps: the integral forming structure of the composite material window frame of the cab comprises an upper window frame and a lower window frame;
the upper window frame comprises a first upper continuous laying layer, a plurality of first preformed bodies and a first lower continuous laying layer;
the lower window frame comprises a second upper continuous layer, a plurality of second preformed bodies and a second lower continuous layer;
the upper window frame and the lower window frame are matched in shape, the first preformed body and the second preformed body are in one-to-one correspondence, the first preformed body section is provided with a threaded hole, the second preformed body section is provided with a threaded hole, and the two threaded holes are connected through a bolt and a threaded sleeve;
the section of the lower window frame is provided with a sealing strip installation groove, the sealing strip installation groove is arranged at the joint of the upper window frame and the lower window frame, and a sealing strip is installed in the sealing strip installation groove;
the first upper continuous laying layer, the first lower continuous laying layer, the second upper continuous laying layer and the second lower continuous laying layer respectively comprise a plurality of composite material layers.
Furthermore, the section of the upper window frame is provided with a cab front windshield installation position.
Further, the composite material layer is made of one of carbon fiber/epoxy composite material, glass fiber/epoxy composite material, carbon fiber + glass fiber hybrid/epoxy composite material, chopped carbon fiber/epoxy composite material and chopped glass fiber/epoxy composite material.
Further, the first preformed body and the second preformed body adopt fiber reinforced composite materials or chopped fiber composite materials.
The utility model has the beneficial effects that:
(1) the utility model effectively avoids the connecting welding seam possibly existing in the traditional metal window frame, eliminates the influence of a welding heat affected zone and residual stress, and effectively improves the integral rigidity and strength of the window frame structure; the upper window frame and the lower window frame are provided with bolt thread sleeves, so that the connection relation of the window frames can be flexibly adjusted;
(2) the composite material layer can effectively improve the corrosion resistance and the fatigue resistance of the window frame, remarkably prolong the service life of the window frame, remarkably reduce the structural weight and achieve the aim of light rail transit; the composite material layer is heat-set by adopting a heat setting agent, so that the production efficiency of continuous layering is effectively improved, and the problem of residual stress caused by uneven resin dispersion possibly generated in the resin injection process is solved;
(3) the utility model uses the preform segmented filling technology, effectively reduces the risks of large deformation, easy generation of internal quality defects and the like of the curing molding of the composite material product with the super-thick and complex section.
Drawings
Fig. 1 is a schematic structural view of an integral molding structure of a composite material window frame of a cab.
Fig. 2 is a sectional view of an integral molding structure of a composite material window frame of a cab.
Fig. 3 is a schematic structural view of the upper sash and the lower sash.
In the figure: 1-upper window frame, 2-lower window frame, 3-first upper continuous laying layer, 4-first preformed body, 5-first lower continuous laying layer, 6-second upper continuous laying layer, 7-second preformed body, 8-second lower continuous laying layer, 9-bolt turnbuckle, 10-cab front windshield installation position and 11-sealing strip installation groove.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1-3, the composite material window frame of the cab has an integral molding structure, which includes an upper window frame and a lower window frame.
The upper window frame comprises a first upper continuous layer, a plurality of first preformed bodies and a first lower continuous layer.
The lower window frame comprises a second upper continuous layer, a plurality of second preformed bodies and a second lower continuous layer.
Before the upper window frame is prepared, a first preformed body is additionally arranged on a complex curvature section according to the structural contour of the upper window frame, different molds can be designed for the first preformed body according to different positions, shapes and sizes, and the molds are used for preparing the first preformed body by adopting a fiber reinforced composite material or a chopped fiber composite material; the fiber reinforced composite material or the chopped fiber composite material can also be prepared by 3D printing.
The preparation of the upper window frame comprises the following steps:
firstly, sequentially paving 2-10 composite material layers in a window frame mould according to layers to form a first upper continuous paving layer, uniformly spraying a heat setting agent after each composite material layer is paved, heating the heat setting agent to 60-80 ℃ by using thermoplastic nylon powder with the dosage of 0.5-2 g per square meter, and finishing heat setting for 30 min;
secondly, placing a plurality of prepared first preformed bodies on corresponding positions of a window frame mold, filling gaps of the first preformed bodies, connecting a vacuum system for vacuumizing and pre-compacting, wherein the vacuum degree is not lower than 900mbar, the time is not less than 15min, pre-compacting needs to be carried out by paving strippable cloth, a porous isolating membrane, an air felt and a vacuum bag on the open face of the mold in sequence, and a flexible silica gel layer can also be directly used on the open face of the mold;
thirdly, sequentially paving 2-10 layers of composite material layers above the first preformed body to form a first lower continuous paving layer, uniformly spraying a heat setting agent after each layer of composite material layer is paved, and performing pre-compaction to obtain a semi-finished product;
fourthly, pre-closing the semi-finished product, checking possible closing gaps or interference, adjusting possible problems of a layer in a cavity of the mold, and ensuring complete filling of the cavity;
fifthly, after the pre-mold closing is finished, introducing resin into a mold cavity by using a vacuum introduction process, curing the workpiece after the introduction is finished, wherein the curing process is carried out by heating to 80 ℃ at the speed of 1-3 ℃ per minute, preserving heat for 0.5 hour, then heating to 120 ℃ at the speed of 1-3 ℃ per minute, preserving heat and pressure for 2 hours, and then cooling to below 60 ℃ at the speed of 1-3 ℃ per minute to finish the curing of the workpiece;
sixthly, after the solidification is finished, releasing pressure, demolding, cleaning and processing burrs on the edge of the window frame to obtain an upper window frame;
and adding a second preformed body in the complicated curvature section according to the structural contour of the lower window frame before preparing the lower window frame, wherein the second preformed body corresponds to the first preformed body in position.
The process for manufacturing the lower window frame is the same as the process for manufacturing the upper window frame.
The composite material layer adopted by the first upper continuous laying layer, the first lower continuous laying layer, the second upper continuous laying layer and the second lower continuous laying layer can be selected from: one of a carbon fiber/epoxy composite material, a glass fiber/epoxy composite material, a carbon fiber + glass fiber hybrid/epoxy composite material, a chopped carbon fiber/epoxy composite material and a chopped glass fiber/epoxy composite material.
The first preforming body and the second preforming body are 200mm-800mm long and 10-15mm thick.
The upper window frame and the lower window frame are correspondingly combined, each first preformed body and each second preformed body are in one-to-one correspondence, threaded holes are formed in the first preformed bodies and the second preformed bodies, the threaded holes are connected with bolt thread sleeves in a threaded mode, the upper window frame and the lower window frame are connected, and the bolt thread sleeves can achieve the design adjustment range of the bolt fastening torque of 10-20 N.m.
The section of going up the window frame is equipped with cab front windshield installation position, and the section of lower window frame is equipped with the sealing strip mounting groove, and the sealing strip mounting groove sets up at the junction of last window frame and lower window frame, installs the sealing strip in the sealing strip mounting groove.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model.
Claims (3)
1. The integral forming structure of the composite material window frame of the cab is characterized in that: comprises an upper window frame and a lower window frame;
the upper window frame comprises a first upper continuous laying layer, a plurality of first preformed bodies and a first lower continuous laying layer;
the lower window frame comprises a second upper continuous layer, a plurality of second preformed bodies and a second lower continuous layer;
the upper window frame and the lower window frame are matched in shape, the first preformed body and the second preformed body are in one-to-one correspondence, the first preformed body section is provided with a threaded hole, the second preformed body section is provided with a threaded hole, and the two threaded holes are connected through a bolt and a threaded sleeve;
the section of the lower window frame is provided with a sealing strip installation groove, the sealing strip installation groove is arranged at the joint of the upper window frame and the lower window frame, and a sealing strip is installed in the sealing strip installation groove;
the first upper continuous laying layer, the first lower continuous laying layer, the second upper continuous laying layer and the second lower continuous laying layer respectively comprise a plurality of composite material layers.
2. The cab composite window frame integral molding structure of claim 1, wherein: the section of the upper window frame is provided with a cab front windshield installation position.
3. The cab composite window frame integral molding structure of claim 1, wherein: the first preform and the second preform are made of a fiber reinforced composite or a chopped fiber composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122900367.7U CN216969654U (en) | 2021-11-24 | 2021-11-24 | Integral forming structure of composite material window frame of cab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122900367.7U CN216969654U (en) | 2021-11-24 | 2021-11-24 | Integral forming structure of composite material window frame of cab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216969654U true CN216969654U (en) | 2022-07-15 |
Family
ID=82345759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122900367.7U Active CN216969654U (en) | 2021-11-24 | 2021-11-24 | Integral forming structure of composite material window frame of cab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216969654U (en) |
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2021
- 2021-11-24 CN CN202122900367.7U patent/CN216969654U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20231026 Address after: Room 45, Room 2104, Building 1, Xinyi Square, No. 68 South Tiancheng Road, High Speed Rail New City, Xiangcheng District, Suzhou City, Jiangsu Province, 215000 (cluster registration) Patentee after: Zhihang Composite Materials Technology (Jiangsu) Co.,Ltd. Address before: 215132 No. 286, qinglonggang Road, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: Yangtze River Delta Advanced Materials Research Institute |