CN211442819U - Grid reinforcing rib column shell and carrier rocket with same - Google Patents
Grid reinforcing rib column shell and carrier rocket with same Download PDFInfo
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- CN211442819U CN211442819U CN201921537869.4U CN201921537869U CN211442819U CN 211442819 U CN211442819 U CN 211442819U CN 201921537869 U CN201921537869 U CN 201921537869U CN 211442819 U CN211442819 U CN 211442819U
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Abstract
The utility model discloses a grid reinforcing rib column shell and a carrier rocket with the same, wherein the grid reinforcing rib column shell comprises a column shell body and grid reinforcing ribs, and the column shell body is provided with an inner peripheral surface; the grid reinforcing ribs are arranged on the whole inner circumferential surface, and the rib body sections of the grid reinforcing ribs are gradually increased from two ends to the middle in the axial direction of the column shell body. The utility model discloses a net strengthening rib column shell bearing capacity is high, processing technology is simple, can make the net add the rib column shell realize the lightweight design and be fit for carrying out extensive volume production.
Description
Technical Field
The utility model belongs to the technical field of aerospace structure owner load component design and specifically relates to a net strengthening rib column shell and have its carrier rocket.
Background
With the continuous exploration of the aerospace field by human beings, the diameter of a carrier rocket serving as a main tool for transporting spacecrafts to the space by human beings is continuously increased, the service environment is more and more rigorous, and higher requirements are provided for the bearing capacity of the carrier rocket structure. The main bearing structures of the carrier rocket, such as the boosting structure and the storage tank, and the like, adopt a large number of grid reinforced column shell structures. For the traditional grid reinforced column-shell structure, the increase of the carrying capacity of the launch vehicle structure usually means the increase of the structure weight, which causes the great reduction of the carrying capacity of the launch vehicle. To date, it has been a significant challenge in the aerospace field to avoid excessive increases in the weight of structures while increasing their load carrying capacity. On the other hand, how to reduce the structural dry weight of the launch vehicle and ensure that the structural load-bearing capacity is not seriously affected is a research topic which is being overcome by related technicians. In conclusion, the improvement of the carrying capacity of the carrier rocket and the reduction of the dry weight of the structure have great significance in propelling the development of aerospace industry. The research on the structure of the related grid reinforced column shell shows that the bearing capacity of grid reinforced column shells in different structural forms has great difference, so that the research on the novel grid reinforced column shell structure provides an effective solution for improving the bearing capacity of a carrier rocket and reducing the dry weight of the structure. The development of the novel structure of the grid reinforced column shell with higher bearing capacity has important engineering significance for realizing the lightweight design of the spacecraft.
The arrow bearing structure of the carrier rocket is mainly subjected to the reaction force of the adjacent sections, and the main form of the reaction force is bending moment, axial force and shearing force acting on the cabin section. In analyzing the load-bearing capacity of a structure, a bending moment is often equivalent to an axial force, and a shear force is usually much smaller than the axial force without considering the influence on the load-bearing capacity of the structure. Under various load effects, the force bearing structure stress model of the rocket body can be simplified into a grid reinforced column shell mechanical model only bearing the axial pressure effect.
Thin-walled structures such as grid reinforced column shells and the like can be subjected to initial defects of different degrees in the manufacturing, transporting, installing and using processes, and the initial defects can cause the structural performance to be greatly reduced. The initial defects of the thin-wall structure are generally divided into physical defects and geometric defects, wherein the physical defects comprise defects of structural inclusion, residual stress caused by welding and roll bending and the like, and the geometric defects comprise defects of non-roundness of a section, non-uniform wall thickness, non-straight axis and the like. Initial defects of different degrees exist in an actual structure, so that great difference exists between numerical calculation and experimental results of the thin-wall structure. In order to systematically research the influence of initial defects on the bearing capacity of grid reinforced column shell structures with different configurations, different defect sensitivity analysis methods are successively proposed. In the defect sensitivity analysis method, most of the defect sensitivity of the bearing capacity of the grid reinforced column shell relative to the initial defect is represented by a reduction factor, wherein the reduction factor is equal to the ratio of the limit load of a thin-wall structure in a defect-containing state to the limit load of the thin-wall structure in a defect-free state, and therefore the reduction factor is a certain value between 0 and 1. Moreover, the higher the reduction factor, the smaller the influence of the initial defect on the structure performance is, and the lower the defect sensitivity of the structure is; conversely, the higher the defect sensitivity of the structure. In actual engineering, the bearing capacity of a thin-wall structure without defects is only concerned, so that the potential safety hazard of the structure is often caused, and the capacity of the structure in the aspect of resisting the defects is considered in a novel structural design scheme, so that a novel grid reinforced column shell structure with a high reduction factor is developed.
With the continuous development and improvement of grid reinforcement structure manufacturing technologies such as the replacement of a chemical milling technology, the combination of a roll bending technology and a mechanical milling technology, a digital manufacturing technology and the like by a mechanical milling technology, the manufacturing error of the grid reinforcement structure is reduced to a certain extent, but the structure still has physical defects and geometric defects in other aspects. The initial structural defects are multifaceted and are random factors that inevitably affect the load bearing capacity of the structure. In line with the development of the era, the diameter of the launch vehicle is increased, which results in that the diameter-thickness ratio (the ratio of the diameter to the equivalent thickness of the rocket body) of the rocket body structure is increased. Studies have shown that the larger the aspect ratio of the thin-walled shell, the more sensitive the structure is to initial defects. For the grid reinforced column shell structure with large diameter, the novel structure scheme with low defect sensitivity can bring more considerable practical value and has wide application prospect.
The experiment cost of the grid reinforced structure is too high, and large-scale related experiments are not facilitated, so that the approach of obtaining the structural performance index based on the fine numerical analysis method is widely applied to the research of the grid reinforced structure. Researchers develop sensitivity analysis of the grid reinforcement structure about various defects, and consider the influence of defects such as characteristic value modal defects, concentration defects, single-point depression defects, adverse multi-point depression defects, weld defects and the like on the bearing capacity of the grid reinforcement structure. The optimization work of the grid reinforced structure is correspondingly improved, and the structure weight reduction and the structure bearing capacity improvement achieve certain effect under the optimization technology. However, it is worth noting that most of the related research works are directed to a specific grid reinforcement structure, and no new structural scheme with lower defect sensitivity is developed.
With regard to the failure mode of the grid reinforced structure, researchers also carry out various researches, and find that buckling instability of the structure always occurs in the force bearing component before strength failure, and buckling instability failure of most structures starts from the middle part of the force bearing component, which is related to that the stability condition is not satisfied before the position of the middle part of the grid reinforced structure subjected to axial load. The bearing capacity of the grid reinforced structure is improved, and a novel bearing structure with excellent mechanical property is developed, so that the damage form of the bearing member can be guided to a state which is less prone to occur from the aspect of the damage form of the structure.
In summary, there is a need to provide a grid reinforcing rib column shell structure to reduce the sensitivity of the grid reinforcing rib structure to initial defects, reduce the influence of the initial defects on the bearing capacity of the grid reinforcing rib structure, and provide a feasible structural scheme for the lightweight design of the dry weight of the launch vehicle structure.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a net strengthening rib column shell, bearing capacity is high, processing technology is simple, can make the net add the rib column shell realize the lightweight design and be fit for carrying on extensive volume production.
According to the utility model discloses net strengthening rib column shell of first aspect embodiment, include:
a column shell body having an inner circumferential surface;
the grid reinforcing ribs are arranged on the whole inner circumferential surface, and the rib body sections of the grid reinforcing ribs are gradually increased from two ends to the middle in the axial direction of the column shell body.
According to the utility model discloses net strengthening rib column casing through the interior week arrangement net strengthening rib at column casing body, strengthens column casing body's rigidity, and the muscle body cross-section of net strengthening rib is by both ends to middle part crescent on column casing body axial direction, has reduced column casing body both ends rigidity and has strengthened column casing body middle part rigidity, has avoided column casing body middle part to take place the bucking unstability first to the bearing capacity of load structure has been improved, has reduced the sensitivity of structure to initial defect. The column casing body is cylindrical, set up the net strengthening rib at columniform column casing body inner peripheral surface, the muscle body cross-section of net strengthening rib is crescent to the middle part by both ends on column casing body axial direction, it is high to form the middle part rib, the rib overall arrangement that the both ends rib is low, column casing body middle part rigidity has been improved, when receiving axial load, avoided column casing body middle part to take place buckling instability earlier and lead to the column casing fracture, the bearing capacity of net strengthening rib column casing has been strengthened, net strengthening rib processing technology is simple simultaneously, can make the column casing realize lightweight design and be fit for carrying out extensive volume production.
According to an embodiment of the first aspect of the present invention, the grid reinforcing rib includes a plurality of first reinforcing ribs arranged in a first direction and a plurality of second reinforcing ribs arranged in a second direction, and the plurality of first reinforcing ribs and the plurality of second reinforcing ribs intersect to form the grid; the widths of the first reinforcing ribs at different positions are the same, and the heights of the first reinforcing ribs are gradually increased from two ends to the middle part in the axial direction of the cylindrical shell body and are the same in the same radial section direction of the cylindrical shell body; the widths of the second reinforcing ribs at different positions are the same, and the heights of the second reinforcing ribs are gradually increased from two ends to the middle in the axial direction of the cylindrical shell body and are the same in the same radial section direction of the cylindrical shell body.
According to a further embodiment of the first aspect of the present invention, the first direction of the plurality of first reinforcing ribs is the same as the axial direction of the column shell body, and the plurality of first reinforcing ribs are circumferentially distributed at intervals along the column shell body; the second direction of a plurality of second strengthening ribs is the same as the circumferential direction of the column shell body, and the second strengthening ribs are distributed at intervals along the axial direction of the column shell body.
According to the utility model discloses the first aspect is further embodiment again, and is a plurality of highly being continuous linearity change or continuous curvilinear motion of first strengthening rib is a plurality of the height of second strengthening rib is in be discontinuous linear motion or discontinuous curvilinear motion to the middle part by both ends on the column casing body axial direction.
According to the utility model discloses the first aspect is further embodiment again, the highest height of first strengthening rib is less than 2 times of minimum height, the highest height of second strengthening rib is less than 2 times of minimum height.
According to a still further embodiment of the first aspect of the present invention, the width of the plurality of first ribs is the same as the width of the plurality of second ribs.
According to the utility model discloses the further embodiment of first aspect, it is a plurality of first strengthening rib the first direction with column shell body axial direction skew is a plurality of the second strengthening rib the second direction with column shell body axial direction skew.
According to the utility model discloses a still further embodiment of first aspect, it is a plurality of the height of first strengthening rib is the change of continuous linearity or the change of continuous curvilinear nature, and is a plurality of the height of second strengthening rib is the change of continuous linearity or the change of continuous curvilinear nature.
The utility model discloses the second aspect still provides a carrier rocket.
A launch vehicle according to embodiments of the second aspect of the invention having a lattice stiffener column casing according to any of the embodiments described above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a grid reinforced column casing according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a grid reinforced column casing according to an embodiment of the present invention.
Fig. 3 is a schematic view of the first reinforcing rib when the first reinforcing rib height of the grid reinforced column casing of the embodiment of the first aspect of the present invention adopts the curve type change rule.
Fig. 4 is a schematic view of a first reinforcing rib when the first reinforcing rib height of the grid reinforced column casing of the embodiment of the first aspect of the present invention adopts a linear variation law.
Reference numerals:
grid reinforcing rib column shell 1000
The column shell body 1 has an inner peripheral surface 11 and an outer peripheral surface 12
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
A lattice stiffener cylinder housing 1000 according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
As shown in fig. 1 to 4, a lattice reinforcing rib column casing 1000 according to an embodiment of the first aspect of the present invention includes a column casing body 1 and lattice reinforcing ribs 2, wherein the column casing body 1 has an inner peripheral surface 11; the grid reinforcing ribs 2 are arranged on the whole inner circumferential surface 11, and the rib body sections of the grid reinforcing ribs 2 are gradually increased from two ends to the middle in the axial direction of the column shell body 1.
Specifically, the column shell body 1 is used as a main force-bearing component and is provided with an inner circumferential surface 11 and an outer circumferential surface 12, as shown in fig. 1, the column shell body 1 can be cylindrical, the inner circumferential surface 11 of the cylindrical column shell body 1 is provided with grid reinforcing ribs 2, the rib body sections of the grid reinforcing ribs 2 are gradually increased from two ends to the middle in the axial direction of the column shell body 1, the rigidity of the two ends of the column shell body 1 is reduced, the rigidity of the middle of the column shell body 1 is enhanced, buckling instability in the middle of the column shell body 1 is avoided, the bearing capacity of the force-bearing structure is improved, and the sensitivity of the structure to initial defects is reduced; the outer peripheral surface 12 of the cylindrical column shell body 1 is smooth, so that the outer peripheral surface 12 of the grid reinforcing rib column shell 1000 is attractive.
The grid reinforcing ribs 2 are arranged on the inner circumferential surface 11 of the column shell body 1, an integrated piece can be formed, the cross section of each rib is gradually increased from two ends to the middle in the axial direction of the column shell body 1, the rigidity of the two ends of the column shell body 1 is reduced, the rigidity of the middle of the column shell body 1 is enhanced, when the column shell body 1 is subjected to axial load, buckling instability occurs in the column shell body 1 before strength damage, the column shell body 1 is bent to enable the middle of the column shell body 1 to lose a stable state, the grid reinforcing ribs 2 are arranged on the inner circumferential surface 11 of the column shell body 1, buckling instability occurring in the middle of the column shell body 1 first is avoided, the bearing capacity of a bearing structure is improved, and the sensitivity of the structure to initial defects is reduced.
According to the utility model discloses net strengthening rib column casing 1000 of the embodiment of the first aspect, through the interior week arrangement net strengthening rib at column casing body 1, reinforcing column casing body 1's rigidity, the muscle body cross-section of net strengthening rib 2 is crescent to the middle part by both ends on 1 axial direction of column casing body, 1 middle part rigidity of column casing body has been reduced and has been strengthened to 1 both ends rigidity of column casing body, it takes place the bucking unstability to have avoided 1 middle part of column casing body to take place first, thereby the bearing capacity of load structure has been improved, the sensitivity of structure to initial defect has been reduced. Column shell body 1 is cylindrical, 11 sets up the net strengthening rib at 1 inner peripheral surface of columniform column shell body, the rib body cross-section of net strengthening rib 2 is crescent to the middle part by both ends on 1 axial direction of column shell body, it is high to form the middle part rib, the rib overall arrangement that the both ends rib is low, 1 middle part rigidity of column shell body has been improved, when receiving axial load, avoided 1 middle part of column shell body to take place buckling instability earlier and lead to the column shell fracture, the bearing capacity of net strengthening rib column shell 1000 has been strengthened, the simultaneous processing technology is simple, can make net strengthening rib column shell 1000 realize the lightweight design and be fit for carrying out extensive volume production.
According to an embodiment of the first aspect of the present invention, the grid reinforcing rib 2 comprises a plurality of first reinforcing ribs 21 arranged in a first direction and a plurality of second reinforcing ribs 22 arranged in a second direction, the plurality of first reinforcing ribs 21 and the plurality of second reinforcing ribs 22 intersect to form a grid; the widths of the first reinforcing ribs 21 at different positions are the same, and the heights of the first reinforcing ribs 21 are gradually increased from two ends to the middle in the axial direction of the column shell body 1 and are the same in the same radial section direction of the column shell body 1; the widths of the second reinforcing ribs 22 at different positions are the same, and the heights of the second reinforcing ribs 22 are gradually increased from two ends to the middle in the axial direction of the cylindrical shell body 1 and are the same in the same radial section direction of the cylindrical shell body 1. It is understood that the first direction and the second direction may be any directions but the direction of the first direction is different from the direction of the second direction, so that the plurality of first reinforcing ribs 21 and the plurality of second reinforcing ribs 22 are arranged to intersect with each other on the inner circumferential surface 11 of the column shell body 1 to form a grid, so that the strength of the column shell body 1 is improved; the widths of the first reinforcing ribs 21 at different positions are the same, and the widths of the second reinforcing ribs 22 at different positions are the same, so that the first reinforcing ribs 21 and the second reinforcing ribs 22 can be of standard sizes, the processing difficulty is low, the initial defect degree is low, the reduction factor is high, the defect sensitivity is low, and the bearing capacity of the grid reinforcing rib column shell 1000 is high; the height of a plurality of first strengthening ribs 21 is the same in the same radial cross section direction of the column shell body 1 by both ends to middle part crescent on the column shell body 1 axial direction, the height of a plurality of second strengthening ribs 22 is the same in the same radial cross section direction of the column shell body 1 by both ends to middle part crescent on the column shell body 1 axial direction, therefore, the rigidity of the column shell body 1 both ends is reduced and the rigidity of the column shell body 1 middle part is enhanced, buckling instability in the column shell body 1 middle part is avoided, the bearing capacity of the grid strengthening rib column shell 1000 on the same radial cross section is improved, and the sensitivity of the structure to the initial defect is reduced.
It should be noted that the height of the middle reinforcing rib and the height of the end reinforcing rib, the width of the reinforcing rib, the thickness of the column shell body 1, the number of the first reinforcing ribs 21 and the number of the second reinforcing ribs 22 of the inner circumferential surface 11 of the column shell body 1 can be determined by a numerical optimization technique according to the indexes such as the diameter, the length, the utility and the like of the grid reinforcing rib column shell 1000.
According to a further embodiment of the first aspect of the present invention, the first direction of the plurality of first reinforcing ribs 21 is the same as the axial direction of the column shell body 1, and the plurality of first reinforcing ribs 21 are circumferentially distributed at intervals along the column shell body 1; the second direction of a plurality of second strengthening ribs 22 is the same as the circumference of the column shell body 1, and a plurality of second strengthening ribs 22 are distributed along the axial direction of the column shell body 1 at intervals. It can be understood that a plurality of first strengthening ribs 21 intersect with a plurality of second strengthening ribs 22 perpendicularly, and a plurality of second strengthening ribs 22 that distribute along the axial direction of the column shell body 1 are highly changed correspondingly along with the height change of the first strengthening ribs 21, so that the second strengthening ribs 22 that are closer to the middle part of the column shell body 1 are higher, and the first strengthening ribs 21 that are closer to the two ends of the column shell body 1 are lower, so that the rigidity of the two ends of the column shell body 1 is reduced, the rigidity of the middle part of the column shell body 1 is enhanced, and the problem that the middle part of the column shell body 1 is bent and deformed to cause the structure to lose a stable state is avoided.
According to the utility model discloses the first aspect is further embodiment again, and the height of a plurality of first strengthening ribs 21 is the change of continuous linearity or the change of continuous curvilinearity, and the height of a plurality of second strengthening ribs 22 is the change of discontinuity linearity or the change of discontinuity curve by both ends to the middle part in the column shell body 1 axial direction. It can be understood that the height of the plurality of first reinforcing ribs 21 increases continuously from both ends to the middle in the axial direction, as shown in fig. 3 and 4, the first reinforcing ribs 21 may increase in a curved shape or increase in a linear shape, the plurality of second reinforcing ribs 22 are distributed at intervals in the axial direction on the inner circumferential surface 11 of the column shell body 1, the height of each section of one second reinforcing rib 22 of the plurality of second reinforcing ribs 22 is not changed and the height of the plurality of second reinforcing ribs 22 at the intersection with the plurality of first reinforcing ribs 21 is the same, so that the second reinforcing ribs 22 change in a linear or curved shape discontinuously from both ends to the middle in the axial direction of the column shell body 1. From this for 1 both ends rigidity of column shell body reduces and 1 middle part rigidity reinforcing of column shell body, avoids 1 middle part of column shell body to take place bending deformation first and make the structure lose stable state.
According to a still further embodiment of the first aspect of the present invention, the highest height of the first reinforcement rib 21 is less than 2 times the lowest height, and the highest height of the second reinforcement rib 22 is less than 2 times the lowest height. From this, avoid because the grid adds the both ends of muscle post and the middle part difference is too big excessively leads the both ends of grid strengthening rib post shell 1000 with the destruction form of post shell body 1.
According to a still further embodiment of the first aspect of the present invention, the width of the plurality of first reinforcing ribs 21 is the same as the width of the plurality of second reinforcing ribs 22. Therefore, the widths of the first reinforcing ribs 21 and the second reinforcing ribs 22 are standard sizes, the processing difficulty is low, the initial defect degree is low, the reduction factor is high, the defect sensitivity is low, and the bearing capacity of the grid reinforcing rib column shell 1000 is high.
According to the utility model discloses the further embodiment of first aspect, the first direction and the 1 axial direction skew of column shell body of a plurality of first strengthening ribs 21, the second direction and the 1 axial direction skew of column shell body of a plurality of second strengthening ribs 22. It will be appreciated that the skew between the first ribs 21 and the second ribs 22 may include the following: firstly, a plurality of first reinforcing ribs 21 are arranged along the axial direction of the column shell body 1, the second direction of a plurality of second reinforcing ribs 22 is oblique to the axial direction of the column shell body 1, and the plurality of first reinforcing ribs 21 and the plurality of second reinforcing ribs 22 are intersected to form a grid; secondly, a plurality of second reinforcing ribs 22 are arranged along the circumferential direction of the column shell, the first direction of the plurality of first reinforcing ribs 21 is obliquely crossed with the circumferential direction of the column shell body 1, and the plurality of first reinforcing ribs 21 and the plurality of second reinforcing ribs 22 are crossed to form a grid; thirdly, the first direction of the first reinforcing ribs 21 is oblique to the axial direction of the column shell body 1, the second direction of the second reinforcing ribs 22 is oblique to the axial direction of the column shell body 1, and the first reinforcing ribs 21 and the second reinforcing ribs 22 intersect to form a grid. Therefore, the bearing capacity of the column shell body 1 is increased, the processing technology is simple, the grid reinforced column shell 1000 can be designed in a light weight mode, and the grid reinforced column shell is suitable for large-scale mass production.
According to a still further embodiment of the first aspect of the present invention, the heights of the plurality of first reinforcing ribs 21 change in a continuous linear manner or in a continuous curvilinear manner, and the heights of the plurality of second reinforcing ribs 22 change in a continuous linear manner or in a continuous curvilinear manner. It can be understood that the heights of the plurality of first reinforcing ribs 21 and the plurality of second reinforcing ribs 22 are continuously increased from the two ends to the middle in the axial direction, as shown in fig. 3 and 4, the heights of the plurality of first reinforcing ribs 21 and the plurality of second reinforcing ribs 22 are the same at the intersection of the inner peripheral surface 11 of the column shell body 1 and the first reinforcing ribs 21, and the first reinforcing ribs 21 and the second reinforcing ribs 22 can be increased in a curved shape or a straight shape. From this for 1 both ends rigidity of column shell body reduces and 1 middle part rigidity reinforcing of column shell body, avoids 1 middle part of column shell body to take place bending deformation first and make the structure lose stable state.
The utility model also provides a carrier rocket.
A launch vehicle according to an embodiment of the second aspect of the invention has a lattice reinforcing strut casing 1000 according to any of the embodiments described above. It can be understood that the main bearing structure of the carrier rocket, such as the boosting structure and the storage box, adopts the grid reinforcing rib column shell 1000 as the bearing structure of the rocket body.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A lattice stiffener column casing, comprising:
a column shell body having an inner circumferential surface;
the grid reinforcing ribs are arranged on the whole inner circumferential surface, and the rib body sections of the grid reinforcing ribs are gradually increased from two ends to the middle in the axial direction of the column shell body.
2. The grid reinforcement column shell of claim 1, wherein the grid reinforcement comprises a first plurality of reinforcement ribs arranged in a first direction and a second plurality of reinforcement ribs arranged in a second direction, the first plurality of reinforcement ribs intersecting the second plurality of reinforcement ribs to form the grid; the widths of the first reinforcing ribs at different positions are the same, and the heights of the first reinforcing ribs are gradually increased from two ends to the middle part in the axial direction of the cylindrical shell body and are the same in the same radial section direction of the cylindrical shell body; the widths of the second reinforcing ribs at different positions are the same, and the heights of the second reinforcing ribs are gradually increased from two ends to the middle in the axial direction of the cylindrical shell body and are the same in the same radial section direction of the cylindrical shell body.
3. The grid reinforced rib column shell of claim 2, wherein the first direction of the plurality of first reinforcing ribs is the same as the axial direction of the column shell body, and the plurality of first reinforcing ribs are circumferentially spaced along the column shell body; the second direction of a plurality of second strengthening ribs is the same as the circumferential direction of the column shell body, and the second strengthening ribs are distributed at intervals along the axial direction of the column shell body.
4. The grid reinforcing rib column shell according to claim 3, wherein the heights of the plurality of first reinforcing ribs change linearly or continuously curvilinearly, and the heights of the plurality of second reinforcing ribs change linearly or discontinuously curvilinearly from both ends to the middle in the axial direction of the column shell body.
5. The grid stiffener housing of claim 3, wherein the first stiffener has a maximum height less than 2 times the minimum height and the second stiffener has a maximum height less than 2 times the minimum height.
6. The grid reinforcement column housing of claim 3, wherein the width of the first plurality of ribs is the same as the width of the second plurality of ribs.
7. The lattice reinforced rib column shell of claim 2, wherein the first direction of the plurality of first reinforcing ribs is oblique to the column shell body axial direction, and the second direction of the plurality of second reinforcing ribs is oblique to the column shell body axial direction.
8. The grid reinforcing bar column casing of claim 5, wherein the height of the plurality of first reinforcing bars varies linearly or curvilinearly, and the height of the plurality of second reinforcing bars varies linearly or curvilinearly.
9. A launch vehicle comprising a lattice-stiffened column shell of any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921537869.4U CN211442819U (en) | 2019-09-16 | 2019-09-16 | Grid reinforcing rib column shell and carrier rocket with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921537869.4U CN211442819U (en) | 2019-09-16 | 2019-09-16 | Grid reinforcing rib column shell and carrier rocket with same |
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| CN211442819U true CN211442819U (en) | 2020-09-08 |
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| CN201921537869.4U Active CN211442819U (en) | 2019-09-16 | 2019-09-16 | Grid reinforcing rib column shell and carrier rocket with same |
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