CN102278561A - Large-caliber long-span compensator for conveying pipe - Google Patents
Large-caliber long-span compensator for conveying pipe Download PDFInfo
- Publication number
- CN102278561A CN102278561A CN2011101828059A CN201110182805A CN102278561A CN 102278561 A CN102278561 A CN 102278561A CN 2011101828059 A CN2011101828059 A CN 2011101828059A CN 201110182805 A CN201110182805 A CN 201110182805A CN 102278561 A CN102278561 A CN 102278561A
- Authority
- CN
- China
- Prior art keywords
- delivery pipe
- pull bar
- cushion block
- unthreaded hole
- fixture block
- 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.)
- Granted
Links
Images
Landscapes
- Supports For Pipes And Cables (AREA)
Abstract
The invention relates to a large-caliber long-span compensator for a conveying pipe, comprising symmetrically-distributed tension rod limiting devices on corrugated pipes at two ends of the conveying pipe, wherein each tension rod limiting device comprises a fixture block, a cushion block and a tension rod; each fixture block is fixed by matching with a bump at one side of the corrugated pipe with a groove, and the two symmetrically-distributed fixture blocks are clamped on the conveying pipe and fixed by first light holes; the cushion blocks are of an approximate triangular structure, three corners are provided with one light hole respectively and two fourth light holes and two bolt holes on a butt flange at the other side of the corrugated pipe are fixed correspondingly; and two ends of each tension rod pass through second light holes of the fixture blocks respectively, and third light holes on the cushion blocks are fixed with the fixture blocks and the cushion blocks by washers with a conical surface, spherical washers, spring washers and nuts. By adding the tension rod structure, the compensator realizes the compensation of assembly displacement, avoids the fatigue failure of the corrugated pipes at an engine end on the conveying pipe in the flying process, simplifies the structure design, and strengthens the reliability.
Description
Technical field
The invention belongs to the carrier rocket technology field, relate to the bigbore compensator of a kind of carrier rocket delivery line, particularly relate to a kind of carrier rocket heavy caliber long span delivery pipe compensator.
Background technique
After manned space flight carrier rocket delivery tube increases, the about 5.8m of total length, quality increases, a bellows is respectively arranged before and after this section delivery pipe, middle not fixed support, the lower end bellows fatigue behaviour under random vibration condition descends and fatigue ruption may occur, this bellows need satisfy axially when assembling, the radial compensation requirement, when flight, also need to compensate the stand stretch that engine operation causes, if the redesign bellows needs certain lead time and wants the verification experimental verification examination; If existing tank structure is proposed to increase the delivery pipe fixed structure, one is that the tank design difficulty is big, and another is that the lead time is long, needs verification experimental verification.Therefore the development of the compensator structure used of a kind of carrier rocket heavy caliber long span delivery pipe becomes exigence.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art, a kind of heavy caliber long span delivery pipe compensator is provided, this compensator is by increasing bracing structure, realized the assembly displacement compensation, fatigue ruption when having avoided on the delivery pipe flight of motor end bellows, and the design that simplifies the structure, strengthened reliability.
Above-mentioned purpose of the present invention is achieved by following technical solution:
A kind of heavy caliber long span delivery pipe compensator, it is characterized in that being included in the pull bar limit stoper that is symmetrically distributed on the bellows at delivery pipe two ends, described pull bar limit stoper comprises fixture block, cushion block and pull bar, wherein fixture block is the semicircular structure of band groove, in outward extending two ears in semicircular structure two ends, respectively have first unthreaded hole, have second unthreaded hole in the outward extending ear in middle part, fixture block cooperates with the thrust of bellows one side by groove to be fixed, and two fixture blocks that are symmetrically distributed are clamped on the delivery pipe and by first unthreaded hole and fix; Cushion block is nearly triangular structure, and a unthreaded hole is respectively arranged on three angles, wherein two corresponding fixing of bolt hole on two the 4th unthreaded holes and the bellows opposite side flange; One end of pull bar passes second unthreaded hole and the fixture block of fixture block and fixes, and the 3rd unthreaded hole and cushion block that the other end of pull bar passes on the cushion block are fixed.
With in the compensator, bolt passes first unthreaded hole of two fixture blocks respectively, and by plain washer, bullet pad and nut two fixture blocks is fixed together at above-mentioned heavy caliber long span delivery pipe.
With in the compensator, the two ends of pull bar are worm structure, and the length of two ends screw thread all is not less than 1/3 of pull bar length at above-mentioned heavy caliber long span delivery pipe.
With in the compensator, the cylindrical body car in the middle of the pull bar becomes tetrahedron at above-mentioned heavy caliber long span delivery pipe, so that spanner is fixed during assembling.
With in the compensator, an end of pull bar passes second unthreaded hole of fixture block at above-mentioned heavy caliber long span delivery pipe, and fixedlys connected with fixture block by taper faced washer, spherical washer, bullet pad and nut successively respectively in the both sides of second unthreaded hole; The other end of pull bar passes the 3rd unthreaded hole of cushion block, and fixedlys connected with cushion block by taper faced washer, spherical washer, bullet pad and nut successively respectively in the both sides of the 3rd unthreaded hole.
With in the compensator, the material of fixture block, cushion block and pull bar is stainless steel material at above-mentioned heavy caliber long span delivery pipe, and stainless steel material is 1Cr18Ni9Ti.
With in the compensator, slick and sly processing has been carried out in the corner, three places of nearly triangle cushion block at above-mentioned heavy caliber long span delivery pipe, and does camber with the approaching position of delivery pipe, has avoided interstructural interference to collide with.
With in the compensator, the thickness of cushion block is not less than 15mm at above-mentioned heavy caliber long span delivery pipe.
With in the compensator, the thickness of fixture block is not less than 30mm at above-mentioned heavy caliber long span delivery pipe.
With in the compensator, two the 4th unthreaded holes of cushion block and two bolts hole on the bellows opposite side flange install and fix by bolt, plain washer and nut at above-mentioned heavy caliber long span delivery pipe.
The present invention compared with prior art has following beneficial effect:
When (1) bracing structure that increase to be symmetrically distributed with compensator of delivery pipe of the present invention does not influence former bellows general assembly axially, the radial displacement compensation, when requiring, can regulate bellows ground-mounted compensating axial by the nut on the pull bar, when the compensation of bellows ground-mounted can be regulated by the taper faced washer on the pull bar, spherical washer when radially requiring, structural loads during flight are born by bracing structure, fatigue ruption when having avoided on the delivery pipe flight of motor end bellows;
(2) delivery pipe of the present invention utilizes thrust on the former delivery pipe connecting ring with compensator, design fixture block structure is carried out corresponding cooperation, the cushion block structural design then makes full use of 2 the bolt hole locations of structures and the size of former delivery pipe flange connections, only change and add stay bolt and can use, the design that simplifies the structure, and avoided the change of tank structure and test, the analytical work that causes thus;
(3) delivery pipe of the present invention is stainless steel material with the fixture block in the compensator, cushion block and pull bar and makes, preferred 1Cr18Ni9Ti, and the thickness of cushion block and fixture block carried out preferably, make whole bracing structure have structural strength, rigidity preferably;
(4) delivery pipe of the present invention is a triangle with cushion block profile in the compensator, slick and sly processing has been carried out in corner, 3 place, made arc with delivery pipe near the position, both avoided interstructural interference to collide with, also reduce simultaneously and finish component quality, the quality of this outside link is also less, and is very little to the whole rocket quality influence;
(5) delivery pipe of the present invention is not less than 1/3 of pull bar total length with the two ends screw thread effective length of pull bar in the compensator, can guarantee that bellows regulates on a large scale; Cylindrical body car in the middle of this outside link becomes tetrahedron, and spanner is fixed when being convenient to assemble;
(6) delivery pipe of the present invention is identified the magnitude vibration test with compensator by ground, the intact destruction of bracing structure that shows increase, the bracing structure that increases does not have influence to booster rocket structure general assembly assembly process, and the bracing structure of increase does not have influence to booster rocket delivery line POGO;
(7) delivery pipe of the present invention is simple with the bracing structure that increases in the compensator, and is easy to operate, good reliability.
Description of drawings
Fig. 1 is delivery pipe of the present invention compensator structure outline drawing;
Fig. 2 is delivery pipe of the present invention compensator two dimension plan view;
Fig. 3 is the delivery pipe of the present invention local A enlarged view of compensator two dimension;
Fig. 4 is delivery pipe of the present invention compensator two dimension plan view;
Fig. 5 is delivery pipe of the present invention compensator structure sectional drawing;
Fig. 6 is delivery pipe of the present invention fixture block structural representation in the compensator;
Fig. 7 is delivery pipe of the present invention fixture block section of structure in the compensator;
Fig. 8 is delivery pipe of the present invention cushion block structural representation in the compensator;
Fig. 9 is delivery pipe of the present invention cushion block side view in the compensator;
Figure 10 is a fixture block dimensioned drawing 1 in the embodiment of the invention;
Figure 11 is a fixture block dimensioned drawing 2 in the embodiment of the invention;
Figure 12 is a cushion block dimensioned drawing 1 in the embodiment of the invention;
Figure 13 is a cushion block dimensioned drawing 2 in the embodiment of the invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Boosting oxygen delivery pipe axially is about 5800mm, radially be about 470mm, respectively there is 1 bellows 20 delivery pipe 1 front and back, be illustrated in figure 1 as delivery pipe of the present invention compensator structure outline drawing, wherein compensator is the pull bar limit stoper that is symmetrically distributed on the bellows 20, as shown in Figure 1, the pull bar limit stoper comprises fixture block 6, cushion block 7 and pull bar 8.
Be illustrated in figure 6 as delivery pipe of the present invention fixture block structural representation in the compensator, Fig. 7 is delivery pipe of the present invention fixture block section of structure in the compensator, fixture block 6 is the semicircular structure of band groove 30, respectively has one first unthreaded hole 25 in the outward extending ear in semicircular structure two ends, the outward extending ear in middle part has second unthreaded hole 24.Be illustrated in figure 2 as delivery pipe of the present invention compensator two dimension plan view, Figure 5 shows that delivery pipe of the present invention compensator structure sectional drawing, utilize the thrust 23 on the bellows 20 left end connecting rings of former delivery pipe 1, make fixture block 6 pass through groove 30 transition fit with it, fit dimension and tolerance to fixture block 6 propose high requirement, two fixture blocks 6 that are symmetrically distributed are clamped on the delivery pipe 1 and by first unthreaded hole 25 to be fixed, and first unthreaded hole 25 is of a size of
Bolt 9 passes first unthreaded hole 25 of two fixture blocks 6 respectively, and by plain washer 13, bullet pad 4 and M10 nut 11 two fixture blocks 6 is fixed together, and is of a size of
Second unthreaded hole 24 be used for being connected of fixture block 6 and pull bar 8.Fixture block 6 materials are stainless steel 1Cr18Ni9Ti, and thickness is not less than 30mm, have guaranteed that structural member has certain intensity and rigidity.
Be illustrated in figure 8 as delivery pipe of the present invention cushion block structural representation in the compensator, Figure 9 shows that delivery pipe of the present invention cushion block side view in the compensator, cushion block 7 profiles are that nearly triangle is (because slick and sly processing has been carried out in the corner, three places of diabolo cushion block 7, and do camber with the position that delivery pipe 1 is approaching, therefore the profile of cushion block 7 is represented with nearly triangle), a unthreaded hole is respectively arranged on three angles, comprise two the 4th unthreaded holes 27, be of a size of
Corresponding with the bolt hole size on the abutted flange 22, by increasing former bolt 10 length, install and fix with M10 nut 11, plain washer 13, be illustrated in figure 4 as delivery pipe of the present invention compensator two dimension plan view, on the cushion block 7
The 3rd unthreaded hole 26 be used to install pull bar 8.Cushion block 7 materials are stainless steel 1Cr18Ni9Ti, and thickness is not less than 15mm, have guaranteed that structural member has certain intensity and rigidity.Slick and sly processing has been carried out in the corner, 3 place of cushion block 7, has made arc with delivery pipe 1 near the position, has both avoided interstructural interference to collide with, and also reduces simultaneously and finishes component quality.
Bellows is generally compressive state, treat that delivery pipe installs the back and can distinguish spherical washer 2, taper faced washer 3, bullet pad 5, M12 nut 12 on the inside regulating tie bar 8 according to the actual displacement size, after putting in place, pull bar 8 structural adjustments keep this state, structural loads during flight are born by bracing structure, have avoided the fatigue ruption of bellows.
The compensator structure that pull bar of the present invention is spacing can be regulated by the nut on the pull bar 8 12 when effect one is bellows 20 ground-mounted compensating axial requirements.Effect two is can regulate by the taper faced washer on the pull bar 83, spherical washer 2 when radially requiring when the compensation of bellows 20 ground-mounted.Effect three is that flying time limit system lower end bellows 20 is axial, radial deformation to be to improve the stochastic vibration fatigue behaviour of this bellows 20, and the stand stretch that engine operation causes during flight is born by the front end bellows.
Provide fixture block detailed dimensions figure in the embodiment of the invention as Figure 10,11, Figure 12,13 provides cushion block detailed dimensions Fig. 1 in the embodiment of the invention.
The above; only be the embodiment of the best of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
The content that is not described in detail in the specification of the present invention belongs to related domain professional and technical personnel's known technology.
Claims (10)
1. heavy caliber long span delivery pipe compensator, it is characterized in that being included in the last pull bar limit stoper that is symmetrically distributed of bellows (20) at delivery pipe (1) two ends, described pull bar limit stoper comprises fixture block (6), cushion block (7) and pull bar (8), wherein fixture block (6) is the semicircular structure of band groove (30), in outward extending two ears in semicircular structure two ends, respectively have first unthreaded hole (25), have second unthreaded hole (24) in the outward extending ear in middle part, fixture block (6) cooperates with the thrust (23) of bellows (20) one sides by groove (30) to be fixed, and two fixture blocks (6) that are symmetrically distributed are clamped in delivery pipe (1) and go up and fix by first unthreaded hole (25); Cushion block (7) is nearly triangular structure, and a unthreaded hole is respectively arranged on three angles, wherein two corresponding fixing of bolt hole on two the 4th unthreaded holes (27) and bellows (20) the opposite side flange (22); It is fixing with fixture block (6) that one end of pull bar (8) passes second unthreaded hole (24) of fixture block (6), and the 3rd unthreaded hole (26) that the other end of pull bar (8) passes on the cushion block (7) is fixing with cushion block (7).
2. a kind of heavy caliber long span delivery pipe compensator according to claim 1, it is characterized in that: described bolt (9) passes first unthreaded hole (25) of two fixture blocks (6) respectively, and by plain washer (13), bullet pad (4) and nut (11) two fixture blocks is fixed together.
3. a kind of heavy caliber long span delivery pipe compensator according to claim 1, it is characterized in that: the two ends of described pull bar (8) are worm structure, and the length of two ends screw thread all is not less than 1/3 of pull bar (8) length.
4. a kind of heavy caliber long span delivery pipe compensator according to claim 1 is characterized in that: the cylindrical body car in the middle of the described pull bar (8) becomes tetrahedron (21), so that spanner is fixed during assembling.
5. a kind of heavy caliber long span delivery pipe compensator according to claim 1, it is characterized in that: an end of described pull bar (8) passes second unthreaded hole (24) of fixture block (6), and fixedlys connected with fixture block (6) by taper faced washer (3), spherical washer (2), bullet pad (5) and nut (12) successively respectively in the both sides of second unthreaded hole (24); The other end of pull bar (8) passes the 3rd unthreaded hole (26) of cushion block (7), and fixedlys connected with cushion block (7) by taper faced washer (3), spherical washer (2), bullet pad (5) and nut (12) successively respectively in the both sides of the 3rd unthreaded hole (26).
6. a kind of heavy caliber long span delivery pipe compensator according to claim 1, it is characterized in that: the material of described fixture block (6), cushion block (7) and pull bar (8) is stainless steel material, and stainless steel material is 1Cr18Ni9Ti.
7. a kind of heavy caliber long span delivery pipe compensator according to claim 1, it is characterized in that: slick and sly processing has been carried out in the corner, three places of described nearly triangle cushion block (7), and do camber with the position that delivery pipe (1) is approaching, avoided interstructural interference to collide with.
8. according to claim 1 or 6 described a kind of heavy caliber long span delivery pipe compensators, it is characterized in that: the thickness of described cushion block (7) is not less than 15mm.
9. according to claim 1 or 6 described a kind of heavy caliber long span delivery pipe compensators, it is characterized in that: the thickness of described fixture block (6) is not less than 30mm.
10. a kind of heavy caliber long span delivery pipe compensator according to claim 1 is characterized in that: two bolts hole on two the 4th unthreaded holes (27) of described cushion block (7) and bellows (20) the opposite side flange (22) install and fix by bolt (10), plain washer (13) and nut (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110182805 CN102278561B (en) | 2011-06-29 | 2011-06-29 | Large-caliber long-span compensator for conveying pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110182805 CN102278561B (en) | 2011-06-29 | 2011-06-29 | Large-caliber long-span compensator for conveying pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102278561A true CN102278561A (en) | 2011-12-14 |
| CN102278561B CN102278561B (en) | 2012-12-26 |
Family
ID=45104183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110182805 Active CN102278561B (en) | 2011-06-29 | 2011-06-29 | Large-caliber long-span compensator for conveying pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102278561B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162054A (en) * | 2013-03-27 | 2013-06-19 | 江苏宏博机械制造有限公司 | Boiler pulverized coal Vickers pipeline compensator |
| CN103672280A (en) * | 2013-11-26 | 2014-03-26 | 北京宇航系统工程研究所 | Long-distance wide-temperature-range duct compensation device |
| CN104959752A (en) * | 2015-07-02 | 2015-10-07 | 中国航天科技集团公司长征机械厂 | Telescopic fixture of corrugated pipe compensator |
| CN107763304A (en) * | 2017-10-20 | 2018-03-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of replacing options of the vertical FlexbleJoint in high-altitude |
| CN107934193A (en) * | 2017-11-08 | 2018-04-20 | 广东省工业设备安装有限公司 | A kind of bellow-type expansion joint docks fixing device |
| CN109308948A (en) * | 2018-11-19 | 2019-02-05 | 深圳中广核工程设计有限公司 | The novel connection fastening structure of Nuclear Power Plant Equipment gate and its fastening method |
| CN112728271A (en) * | 2020-12-30 | 2021-04-30 | 南京妗子贸易有限公司 | Elastic damping type compensator |
| CN113738988A (en) * | 2021-11-05 | 2021-12-03 | 沈阳晨光弗泰波纹管有限公司 | Detachable expansion joint |
| CN113983238A (en) * | 2021-10-29 | 2022-01-28 | 沪东中华造船(集团)有限公司 | Corrugated pipe installation adjusting device on ship and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0252369B1 (en) * | 1986-07-05 | 1992-05-13 | Witzenmann GmbH Metallschlauch-Fabrik Pforzheim | Laterally and/or angularly compensating element made of metal for pipe systems under pressure |
| CN1614289A (en) * | 2004-11-12 | 2005-05-11 | 刘运章 | Adjustable bending rubber joint |
| CN201129589Y (en) * | 2007-12-15 | 2008-10-08 | 狄广龙 | Anti-corrosive metallic corrugated compensator for gas pipeline |
| WO2010041881A2 (en) * | 2008-10-10 | 2010-04-15 | Kim Man Jung | Bellows flexible tube for absorbing pump vibration |
| CN201866459U (en) * | 2010-11-10 | 2011-06-15 | 河南省电力勘测设计院 | Novel rubber compensator for reducing lateral thrust |
-
2011
- 2011-06-29 CN CN 201110182805 patent/CN102278561B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0252369B1 (en) * | 1986-07-05 | 1992-05-13 | Witzenmann GmbH Metallschlauch-Fabrik Pforzheim | Laterally and/or angularly compensating element made of metal for pipe systems under pressure |
| CN1614289A (en) * | 2004-11-12 | 2005-05-11 | 刘运章 | Adjustable bending rubber joint |
| CN201129589Y (en) * | 2007-12-15 | 2008-10-08 | 狄广龙 | Anti-corrosive metallic corrugated compensator for gas pipeline |
| WO2010041881A2 (en) * | 2008-10-10 | 2010-04-15 | Kim Man Jung | Bellows flexible tube for absorbing pump vibration |
| CN201866459U (en) * | 2010-11-10 | 2011-06-15 | 河南省电力勘测设计院 | Novel rubber compensator for reducing lateral thrust |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162054A (en) * | 2013-03-27 | 2013-06-19 | 江苏宏博机械制造有限公司 | Boiler pulverized coal Vickers pipeline compensator |
| CN103672280A (en) * | 2013-11-26 | 2014-03-26 | 北京宇航系统工程研究所 | Long-distance wide-temperature-range duct compensation device |
| CN103672280B (en) * | 2013-11-26 | 2016-02-10 | 北京宇航系统工程研究所 | Long apart from wide warm area conduit compensation device |
| CN104959752A (en) * | 2015-07-02 | 2015-10-07 | 中国航天科技集团公司长征机械厂 | Telescopic fixture of corrugated pipe compensator |
| CN107763304A (en) * | 2017-10-20 | 2018-03-06 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of replacing options of the vertical FlexbleJoint in high-altitude |
| CN107934193B (en) * | 2017-11-08 | 2024-03-01 | 广东省工业设备安装有限公司 | Butt joint fixing device for corrugated expansion joint |
| CN107934193A (en) * | 2017-11-08 | 2018-04-20 | 广东省工业设备安装有限公司 | A kind of bellow-type expansion joint docks fixing device |
| CN109308948A (en) * | 2018-11-19 | 2019-02-05 | 深圳中广核工程设计有限公司 | The novel connection fastening structure of Nuclear Power Plant Equipment gate and its fastening method |
| CN109308948B (en) * | 2018-11-19 | 2021-03-12 | 深圳中广核工程设计有限公司 | Nuclear power plant equipment gate connecting and fastening structure and fastening method thereof |
| CN112728271A (en) * | 2020-12-30 | 2021-04-30 | 南京妗子贸易有限公司 | Elastic damping type compensator |
| CN113983238A (en) * | 2021-10-29 | 2022-01-28 | 沪东中华造船(集团)有限公司 | Corrugated pipe installation adjusting device on ship and using method thereof |
| CN113738988A (en) * | 2021-11-05 | 2021-12-03 | 沈阳晨光弗泰波纹管有限公司 | Detachable expansion joint |
| CN113738988B (en) * | 2021-11-05 | 2022-02-18 | 沈阳晨光弗泰波纹管有限公司 | Detachable expansion joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102278561B (en) | 2012-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102278561B (en) | Large-caliber long-span compensator for conveying pipe | |
| US8382038B2 (en) | Device, in particular connection rod, for bracing a fuselage structure of an aircraft and/or for fastening a component | |
| CN102076920A (en) | Tower section for a wind turbine tower | |
| CN105008732B (en) | Pin joint head assembly | |
| CN202031935U (en) | Pipeline connection device | |
| US9315275B2 (en) | Fastening device particularly suitable for the fastening between an air intake and an engine of an aircraft nacelle | |
| CN112761375B (en) | Instability-preventing reinforcing device for angle steel of transmission tower | |
| US20060088400A1 (en) | Multiple load path fastener systems | |
| CN204250168U (en) | The crossbeam assembly of automobile and automobile | |
| CN207246572U (en) | A kind of heavy-duty springs box bracket | |
| DE2424004C3 (en) | Bracing device for expansion joints | |
| US9067669B2 (en) | Carbon fiber hold open rod | |
| CN202471115U (en) | Static trial universal supporting apparatus for different types of cabin bodies | |
| CN108487550A (en) | A kind of reinforcing bar flexible connection sleeve with double stiffness characteristics | |
| US11466713B2 (en) | Bolt connection for connecting two flanges | |
| CN103466496B (en) | A kind of aircraft jack-up device | |
| CN109703786B (en) | Main bearing structure of liquid attitude and orbit control power system | |
| CN201384969Y (en) | Threadless floating type sustaining rod | |
| CN109573107B (en) | Pressure container fixing mode for spacecraft | |
| CN104210652B (en) | A kind of attachment structure of undercarriage | |
| CN206983660U (en) | A kind of braking balance suspension and multiple-axle vehicle | |
| CN106224649B (en) | The anti-axial impact pipe holder of large-diameter pipeline | |
| CN105800175A (en) | Transportation support for silicone rubber casing pipes | |
| CN210087549U (en) | Flange connecting assembly for fan tower cylinder and fan tower cylinder | |
| CN108951909A (en) | A kind of controllable supporting member of assembled strength degradation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |