CN107842609A - A kind of system frame installs pressure-tight box structure - Google Patents
A kind of system frame installs pressure-tight box structure Download PDFInfo
- Publication number
- CN107842609A CN107842609A CN201711243113.4A CN201711243113A CN107842609A CN 107842609 A CN107842609 A CN 107842609A CN 201711243113 A CN201711243113 A CN 201711243113A CN 107842609 A CN107842609 A CN 107842609A
- Authority
- CN
- China
- Prior art keywords
- seal face
- system frame
- box
- reinforcement
- box structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002787 reinforcement Effects 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000000565 sealant Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The present invention provides a kind of system frame installation pressure-tight box structure, including seal face (1), reinforcement (2) and box body (3), the box body (3) is the square box of rectangular in cross-section, the circle of docking one rectangular seal end face (1) on the profile of the square box open at one end, the seal face (1) is with respect to high settings such as two edges, another two edges compare this to the one high and one low setting of edge strip, and open up a circle bolt hole on the seal face (1), in the junction of square box and seal face (1), more tilted-putted reinforcements (2) are set, the seal face (1), reinforcement (2), box body (3) three's integrated machine add-on type.Pressure-tight box structure provided by the present invention, by topological optimization, using thin wall reinforced structure, integrated machine add-on type, not only bonding strength is big, air-tightness is good, also has the advantages that in light weight.
Description
Technical field
The invention belongs to field of airplane structure, and in particular to a kind of system frame installs pressure-tight box structure.
Background technology
The function device of each system of carrying is usually required on aircraft, some system equipments can be arranged in non-hermetically sealed area,
Some need to be arranged in air-tight section.System equipment for being disposed with airtight requirement in non-hermetically sealed area, it is necessary to install gas
Close box.Installation pressure-tight box can increase the weight of structure, require stricter aircraft for own wt, be unfavorable.
The content of the invention
It is an object of the invention to provide a kind of system frame to install pressure-tight box structure, overcomes or alleviated by prior art extremely
A few drawbacks described above.
The purpose of the present invention is achieved through the following technical solutions：A kind of system frame installs pressure-tight box structure, including sealing
End face, reinforcement and box body, the box body are the square box of rectangular in cross-section, and one is docked on the profile of the square box open at one end
Rectangular seal end face is enclosed, for the seal face with respect to high settings such as two edges, another two edges compare this to the one high and one low setting of edge strip,
And a circle bolt hole is opened up on the seal face, more tilted-putted reinforcements are set in the junction of square box and seal face
Muscle, the seal face, reinforcement, box body three's integrated machine add-on type.
Preferably, the seal face, the reinforcement and the box body are thin-wall construction.
Preferably, the reinforcement in each box body outside wall surface is two.
Preferably, the angle of the reinforcement is 45 °.
Preferably, the bolt hole coordinates the airtight bolt of installation to use HM116C type sealant sealings.
Preferably, the system frame installation pressure-tight box structure is obtained using the processing of 7050 plates.
A kind of beneficial effect of system frame installation pressure-tight box structure provided by the present invention is, by topological optimization,
Using thin wall reinforced structure, integrated machine add-on type, not only bonding strength is big, air-tightness is good, also has the advantages that in light weight.
Brief description of the drawings
Fig. 1 is the structural representation that present system support installs pressure-tight box structure；
Fig. 2 is the connection diagram that present system support installs pressure-tight box structure.
Reference：
1- seal faces, 2- reinforcements, 3- box bodys, the airtight bolts of 4-.
Embodiment
To make the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
Part of the embodiment, rather than whole embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to uses
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The system frame installation pressure-tight box structure to the present invention is described in further details below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, a kind of system frame installation pressure-tight box structure, using thin wall reinforced structure, using 7050 plates
Part integrated machine add-on type, including seal face 1, reinforcement 2 and box body 3.Box body 3 is the square box of rectangular in cross-section, in the party
The circle rectangular seal of docking one end face 1 on the profile of box open at one end, the seal face 1 is with respect to the high settings such as two edges, another both sides
Bar compares this to the one high and one low setting of edge strip, and a circle bolt hole is opened up on the seal face 1, in square box and seal face 1
Junction more tilted-putted reinforcements 2 are set, the reinforcement 2 in each outside wall surface of box body 3 is two, reinforcement 2
Angle be 45 °, in length and breadth reinforcement 2 set can effective enhancing structure rigidity, the deflection when bearing airtight load and acting on
Very little, so as to meet gas-tight seal requirement.After system is installed in place, then pressure-tight box structure of the present invention, pressure-tight box knot are installed
Structure is connected with surrounding structure with airtight bolt 4, and is brushed HM116C type fluid sealants and sealed.
The stressing conditions of lower pressure-tight box structure of the present invention are described below.
Pressure-tight box structure Main Load is tensile stress, and its size is：σ=pRs/2t(1)；In formula (1)：σ is tensile stress, P
For airtight pressure, RsIt is thickness for equivalent redius, t, basic thickness t can be calculated by the formula (1).
Then uniform load calculates the height and thickness of rib again.According to series characteristics, reinforcement can be reduced to bear
Uniform load, double branch point models of two fixed ends.
The destruction pulling force of bolt of being tightly connected is [Pt], it is [P that one side, which destroys shearing,s], connector obtains under airtight operating mode
Maximum functional pulling force Pt, maximum functional shearing Ps, then the stretching margin of safety of connecting bolt be
The shearing margin of safety of bolt is
The extruding breaking load of bolt hole is
[Pbr]=d0×δ×kbr×σb
Wherein d0For the diameter of bolt, δ is thickness of interlayer, kbrFor extrusion coefficient, take δ be mouth frame and strengthen the thickness of backing plate it
With i.e. δ, material strength limit σb, extrusion coefficient kbr=1.8, then
[Pbr]=d0×δ×kbr×σb
The extruding force that works PbrEqual to the work shearing on bolt, then the extruding margin of safety of bolt hole is
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (6)
1. a kind of system frame installs pressure-tight box structure, it is characterised in that including seal face (1), reinforcement (2) and box body
(3), the box body (3) is the square box of rectangular in cross-section, and a circle rectangular seal end is docked on the profile of the square box open at one end
Face (1), the seal face (1) compare this to the one high and one low setting of edge strip with respect to high setting, another two edges such as two edges, and at this
A circle bolt hole is opened up on seal face (1), more tilted-putted reinforcements are set in the junction of square box and seal face (1)
Muscle (2), the seal face (1), reinforcement (2), box body (3) three's integrated machine add-on type.
2. system frame according to claim 1 installs pressure-tight box structure, it is characterised in that the seal face (1), institute
It is thin-wall construction to state reinforcement (2) and the box body (3).
3. system frame according to claim 2 installs pressure-tight box structure, it is characterised in that each box body (3) is outside
The reinforcement (2) on wall is two.
4. system frame according to claim 3 installs pressure-tight box structure, it is characterised in that the angle of the reinforcement (2)
Spend for 45 °.
5. system frame according to claim 4 installs pressure-tight box structure, it is characterised in that the bolt hole coordinates installation
Airtight bolt (4) use HM116C type sealant sealings.
6. system frame according to claim 5 installs pressure-tight box structure, it is characterised in that the system frame installs gas
Close box structure is obtained using the processing of 7050 plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243113.4A CN107842609A (en) | 2017-11-30 | 2017-11-30 | A kind of system frame installs pressure-tight box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711243113.4A CN107842609A (en) | 2017-11-30 | 2017-11-30 | A kind of system frame installs pressure-tight box structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107842609A true CN107842609A (en) | 2018-03-27 |
Family
ID=61664060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711243113.4A Pending CN107842609A (en) | 2017-11-30 | 2017-11-30 | A kind of system frame installs pressure-tight box structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107842609A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288481A (en) * | 2011-07-08 | 2011-12-21 | 中国飞机强度研究所 | Vacuumizing loading equipment and test method thereof |
| CN203666992U (en) * | 2013-12-06 | 2014-06-25 | 中国航空工业集团公司济南特种结构研究所 | Handrail structure for radar antenna housing |
| CN204927625U (en) * | 2015-09-05 | 2015-12-30 | 李沛 | Cylinder wall switch socket pair terminal box |
| WO2016160922A1 (en) * | 2014-04-10 | 2016-10-06 | Lifetime Industries, Inc. | Slide out seal with box tunnel |
-
2017
- 2017-11-30 CN CN201711243113.4A patent/CN107842609A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288481A (en) * | 2011-07-08 | 2011-12-21 | 中国飞机强度研究所 | Vacuumizing loading equipment and test method thereof |
| CN203666992U (en) * | 2013-12-06 | 2014-06-25 | 中国航空工业集团公司济南特种结构研究所 | Handrail structure for radar antenna housing |
| WO2016160922A1 (en) * | 2014-04-10 | 2016-10-06 | Lifetime Industries, Inc. | Slide out seal with box tunnel |
| CN204927625U (en) * | 2015-09-05 | 2015-12-30 | 李沛 | Cylinder wall switch socket pair terminal box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180327 |