CN105599889A - Solid composite rudder blade high in rigidity and low in weight - Google Patents

Solid composite rudder blade high in rigidity and low in weight Download PDF

Info

Publication number
CN105599889A
CN105599889A CN201610018207.0A CN201610018207A CN105599889A CN 105599889 A CN105599889 A CN 105599889A CN 201610018207 A CN201610018207 A CN 201610018207A CN 105599889 A CN105599889 A CN 105599889A
Authority
CN
China
Prior art keywords
composite
rudder
rudder blade
rudder stock
skeleton
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
Application number
CN201610018207.0A
Other languages
Chinese (zh)
Other versions
CN105599889B (en
Inventor
梅志远
李华东
刘令
陈国涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naval University of Engineering PLA
Original Assignee
Naval University of Engineering PLA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Naval University of Engineering PLA filed Critical Naval University of Engineering PLA
Priority to CN201610018207.0A priority Critical patent/CN105599889B/en
Publication of CN105599889A publication Critical patent/CN105599889A/en
Application granted granted Critical
Publication of CN105599889B publication Critical patent/CN105599889B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H25/00Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06Steering by rudders
    • B63H25/38Rudders

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a suspension rudder blade applied to a water surface vehicle or an underwater vehicle. The rubber blade comprises a rudder stock area steel frame (1), a composite framework (2), a damping and/or sound-absorbing material (5), buoyancy filling core materials (6) and composite skin (7), and the rudder stock area steel frame (1) is fixedly connected with the composite framework (2), so that an overall framework structure of the rudder blade is formed, and the surface layer of the overall framework structure of the rudder blade is coated with the composite skin (7), so that a watertight structure is formed, gaps between the overall framework structure of the rudder blade and the composite skin (7) are filled with the buoyancy filling core materials (6), and the space around a rudder stock of the rudder stock area steel frame (1) is filled with the damping and/or sound-absorbing material (5). The solid composite rudder blade high in rigidity and low in weight has the advantages of being high in bending resistance/ torsional resistance, resistant to corrosion, low in underwater weight and low in noise.

Description

A kind of high rigidity light quality and solid core composite rudder blade
Technical field
The present invention relates to the rudder blade that the water surface or submarine navigation device use, relate in particular to high rigidity light quality and solid core composite rudder blade for a kind of boats and ships.
Background technology
As chain of command, rudder blade is conventionally arranged on the afterbody (submarine navigation device also can be arranged on stem) of ROV and soaks in water, when ROV boatWhen row, produce rudder power to handle course by rotating rudder blade. Traditional steel rudder blade is mainly steel hollow core slab shelf structure, has following shortcoming: (1)In the time of normal use, seawater can freely be come in and gone out, and inner steel skeleton will be subject to seawater long period of soaking, and cannot carry out because rudder blade inner space is narrowSafeguard or maintenance, inner skeleton structure erosion problem is very serious; (2), because inner silt is piled up for a long time, also can cause rudder blade gravity center shift, shadowRing handling characteristic; (3) traditional steel rudder blade skeleton is steel skeleton, and weight is large, and bending-twisting efficiency is low, and steel rudder blade weight is large under water, account forStand-by storage buoyancy is more; (4) traditional steel rudder blade is subject to heavily quantitative limitation of rudder blade, cannot fill the functional materials such as damping and/or sound absorption in rudder blade inside,Therefore traditional steel rudder blade damping characteristic is poor, but vibration damping shakes a little less than ability; Meanwhile, be subject to the impact of internal water and outside added mass of entrained water, traditional steel rudderLeaf under water natural frequencies is low, easily produces low frequency flutter.
Say from design angle, in the time adopting composite material skin to replace rudder blade steel covering, the bending of rudder blade and torsional rigidity generally will significantly reduce,When serious, may affect rudder blade overall characteristic, therefore, in the time that composite rudder blade structure is designed, its bending stiffness characteristics should have enoughImproved space or can design space, there is the basic maintenance ability suitable with corresponding steel rudder rigidity, this is to carry out high rigidity composite rudderThe primary condition of impeller structure design.
Summary of the invention
The object of the invention is the deficiency existing in order to overcome above-mentioned background technology, a kind of high rigidity light quality and solid core composite rudder blade is provided.
For achieving the above object, the present invention adopts following technical scheme: a kind of high rigidity light quality and solid core composite rudder blade, comprise rudder stock district steel frame,Composite skeleton, buoyancy are filled core, damping and/or sound-absorbing material and composite material skin, described rudder stock district's steel frame and described compositeBetween skeleton, adopt the rudder blade general frame structure that is composed of a fixed connection, described rudder blade general frame structure top layer is coated described composite material skin, formsWatertight structure, described buoyancy is filled core 6 and is filled in the space between described rudder blade general frame structure and described composite material skin, described resistanceBuddhist nun and/or sound-absorbing material are filled in around described rudder stock district steel frame rudder stock. The density of described buoyancy filling core is less than the density of water, when rudder blade is positioned atUnder water time, described buoyancy is filled core can also provide buoyancy in the situation that effectively supporting composite material skin. Described damping and/or sound-absorbing material withAnd buoyancy filling core can require adjust according to rudder blade overall weight, vibration damping or acoustic target strength characteristics.
In technique scheme, rudder blade covering and skeleton all adopt composite, have effectively reduced the weight of whole rudder blade structure; Described compoundMaterial rudder blade adopts the design of watertight structure to solve the shortcoming that traditional steel rudder blade is perishable, silt is piled up in rudder blade inside, and watertight structureThe structural strength of design to rudder blade and the requirement of rigidity higher, fill core by adopting density to be less than buoyancy of water, composite material skin is being carriedFor also providing buoyancy under water in situation about effectively supporting; Damping sound-absorbing material can effectively reduce vibration and the noise in rudder stock region.
For further improving the structural strength of rudder blade, described high rigidity light quality and solid core composite rudder blade, also comprises angle stiffener and the composite wingPlate, described angle stiffener is positioned at the crossover sites of described composite skeleton, and described composite wing plate is positioned at the edge of described composite skeleton.
Described composite skeleton forms by opening up floor chord floor combined crosswise, the quantity changeable of floor, exhibition floor keeps continuously, with string ribThe position that plate intersects adopts composite angle stiffener to strengthen, and adopts composite wing plate to reinforce at the edge of composite skeleton.
Described composite material skin can, according to the requirement of structure bending rigidity Design, adopt respectively carbon fibre reinforced composite, glass fibre reinforced composite materialOr carbon glass assorted fibre reinforced composite material.
Further, described composite material skin adopts thickness design, at entirety or local carbon glass assorted fibre reinforced composite material, the described carbon of adoptingThe laying design that glass assorted fibre reinforced composite material adopts carbon glass to mix, promiscuous mode is interlayer or interlaminar hybrid mode, larger at rigidity requirementDirection adopts carbon fibre to improve rigidity, adopts glass to reduce costs in other directions.
Described composite material skin also can preferably adopt zoning design, mainly comprises that rudder stock district, exhibition are to He Sui border area, expansion area, wherein rudder stock district coveringThickness maximum, exhibition is taken second place to expansion area, the thinnest with border area.
Described rudder stock district steel frame with the mode that is fixedly connected with of described composite skeleton for to extend two-layer at described rudder stock district steel frame connecting portionSteel plate, inserts described composite skeleton between two-layered steel plates, is fixed connection.
Further, described rudder stock district steel frame is preferably C shape or rectangle in the shape of the extended two-layered steel plates of connecting portion.
Analyze from structural design engineering viewpoint, for realizing the object of high rigidity and lightweight, the present invention has adopted following design: adopt on the one hand multipleCondensation material skeleton substitutes the inefficient steel skeleton of bending resistance, and has solved the connectivity problem of itself and rudder stock district steel frame; Adopt on the other hand carbon glass mixedAssorted Varying-thickness composite material skin design, and in main loading side to adopting carbon fiber laying, at main supporting region, covering is thickeied, effectively improvedThe bending rigidity of rudder blade has also alleviated result weight. In addition, above-mentioned rudder blade is whole is watertight structure, efficiently solves conventional steel rudder blade corrosion-proneProblem; The inner buoyancy core of filling of above-mentioned rudder blade can also provide buoyancy in the situation that effectively supporting composite material skin, efficiently solves traditionSteel rudder blade is the large problem of weight under water; Fill damping and/or sound-absorbing material around by rudder blade and rudder stock, also can carry out vibration and noise reducing processing to rudder blade.
The present invention is mainly used in the suspension rudder blade of the water surface or submarine navigation device, in ensureing that rudder blade has enough structural strengths and rigidity requirement,But solved preferably, traditional steel spade rudder leaf is perishable, the problem of the large and ability of shaking of weight under water.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is AA profile in Fig. 1.
Fig. 3 is embodiment 1 rudder stock district steel frame figure.
Fig. 4 is embodiment 1 composite skeleton drawing.
Fig. 5 is embodiment 2 rudder stock district steel frame figure.
Fig. 6 is embodiment 2 composite skeleton drawings.
Fig. 7 is covering subregion schematic diagram.
Wherein, 1-rudder stock district steel frame, 2-composite skeleton, 3-angle stiffener, 4-composite wing plate, 5-damping or sound-absorbing material, 6-buoyancyFill core, 7-composite material skin, 11-rudder stock, 12-steel skeleton, 13-steel connector, 14-lightening core, 15-rudder stock end blind hole, 21-Exhibition floor, 22-string floor, 71-rudder stock district, 72-opens up to expansion area, and 73-is with border area.
Detailed description of the invention
Embodiment 1:
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the present embodiment is by rudder stock district steel frame 1, composite skeleton 2, angle stiffener 3, compositeWing plate 4, damping and/or sound-absorbing material 5, buoyancy fill core 6 and composite material skin 7 forms.
Described rudder stock district steel frame 1 adopts No. 45 high-strength steel to make, rudder stock end welding monoblock steel end panel, and composite material skin 7 ends atEnd panel outer rim, can adopt screw watertight to connect or adopt embedded watertight connection structure to stop; Described rudder stock district steel frame 1 is by rudder stock 11, steelSkeleton 12 and steel connector 13 form, and the quantity of steel connector 13 is tangential 4, and exhibition is to 4; Rudder stock is filled damping and/or suction aroundSound material 5, in this embodiment, damping and/or sound-absorbing material are preferably damping material.
Described composite skeleton 2 adopts SW220/430LV composite to make, combined by 21 and 3 string floors 22 of 4 exhibition floors,Exhibition floor 21 is numbered the exhibition of being followed successively by 1~exhibition 4 from guide margin to lagging edge, and its thickness is followed successively by 20mm, 20mm, 20mm, 10mm, string floor 22From rudder stock to rudder, slightly number and be followed successively by string 1~string 3, its thickness is followed successively by 20mm, 20mm, 10mm. Exhibition floor 21 is continuous, and string floor 22 is disconnectedOpen, adopt L shaped angle stiffener 3 to be connected to form an entirety in crossover sites.
Described buoyancy aid packing material 6 adopts light foam material.
Described composite wing plate 4 adopts carbon glass interlaminar hybrid fabric, carries out manual pasting moulding, its cross section after buoyancy core is populatedFor rectangle, thickness is 8mm.
Described composite material skin 7 can adopt carbon fibre reinforced composite, glass fibre reinforced composite material or carbon glass assorted fibre reinforced composite material etc.For improve rudder blade exhibition to rigidity and reduce cost of manufacture as far as possible, its best mode is to adopt assorted fibre reinforced composite material stressed-skin construction. Promiscuous modeCan select interlayer or layer in etc. different promiscuous modes, reinforcing fiber materials can adopt unidirectional fibre or fabric, exhibition to adopt carbon fiber with improve rigidity,At tangential employing glass to reduce costs. Composite material skin 7 described in this embodiment adopts carbon glass hybrid composite and employing change simultaneously in layerThickness Design, adopts different covering thickness according to the difference of rudder blade top layer different parts carrying stress characteristic, according to exhibition, string bars position numbering pointFor different-thickness: as shown in Figure 7, exhibition floor numbering be less than 3 and string floor numbering to be less than 3 region be rudder stock district, covering thickness is 20mm;Exhibition floor numbering is less than 3 and the string floor numbering Wei Zhanxiang expansion area, region that is greater than 3, and covering thickness is 10mm; The district that exhibition floor numbering is greater than 3Wei Sui border area, territory, covering thickness is 6mm.
Described composite material skin 7 adopts half coated mode, only at rudder face and the slightly coated covering of rudder, and the not coated covering in rudder stock end face steel plate place,Covering adopts watertight connected mode to be connected with it at steel plate place, rudder stock end termination.
Embodiment 2:
The structure of embodiment 2 is substantially the same manner as Example 1, and difference is:
As shown in Figure 5, blind hole 15 is offered in rudder stock 11 ends of described rudder stock district steel frame 1, and steel skeleton 12 is offered lightening core 14, rudder aboveBar 11 around with end blind hole in equal light filling foamed materials, further to alleviate construction weight, the quantity of steel connector 13 is tangential 6,Exhibition is to 3, and concrete structure is referring to Fig. 4.
As shown in Figure 6, described composite skeleton 2 is that 22 and 4 string floor 21 combined crosswise of 3 exhibition floors form, and exhibition floor 22 is from leadingLimit is followed successively by exhibition 1~exhibition 3 to lagging edge numbering, and its thickness is followed successively by 20mm, 20mm, 20mm, and string floor 21 is slightly numbered successively from rudder stock to rudderFor string 1~string 4, its thickness is followed successively by 150mm, 15mm, 15mm, 10mm.
Described composite wing plate 4 adopts the vacuum forming of unidirectional carbon fiber cloth, and its cross section is infundibulate.
The local interlayer carbon glass hybrid composites that adopt of described composite material skin 7, its ply sequence is: exhibition floor numbering be less than 3 and string floor compileNumber being less than 4 region is rudder stock district, and laying is that 10mm unidirectional carbon fiber adds 10mm Woven glass cloth; Exhibition floor numbering be less than 3 and string floor numbering largeIn 4 Wei Zhanxiang expansion area, region, laying is 10mm Woven glass cloth; The Wei Sui border area, region that exhibition floor numbering is greater than 3, laying is 6mm glassFine fabric.
Described composite material skin 7 adopts complete coated mode, and covering terminates in around rudder stock, and carries out encapsulation process herein.
The above is preferred embodiment of the present invention, and the present invention should not be confined to the disclosed content of embodiment and accompanying drawing, every not de-From the equivalence completing under spirit disclosed in this invention or amendment, all fall into the scope of protection of the invention.

Claims (6)

1. a high rigidity light quality and solid core composite rudder blade, is characterized in that: comprise rudder stock district steel frame (1), composite skeleton (2),Damping and/or sound-absorbing material (5), buoyancy are filled core (6) and composite material skin (7), and described rudder stock district steel frame (1) is with described compoundMaterial skeleton (2) employing is fixedly connected with mode and forms rudder blade general frame structure, and described rudder blade general frame structure top layer is coated described compositeCovering (7), forms watertight structure, and described buoyancy is filled core (6) and is filled in described rudder blade general frame structure and described composite material skin (7)Between space in, described damping and/or sound-absorbing material (5) are filled in around described rudder stock district steel frame (1) rudder stock.
2. high rigidity light quality and solid core composite rudder blade according to claim 1, is characterized in that: also comprise angle stiffener (3) and compoundMaterial wing plate (4), described angle stiffener (3) is positioned at the crossover sites of described composite skeleton (2), described composite wing plate (4) positionIn the edge of described composite skeleton (2).
3. high rigidity light quality and solid core composite rudder blade according to claim 1 and 2, is characterized in that: described composite material skin (7)Adopt thickness design, at entirety or the local carbon glass assorted fibre reinforced composite material that adopts, described carbon glass assorted fibre reinforced composite material adopts carbonThe laying design of glass interlayer or interlaminar hybrid mode.
4. high rigidity light quality and solid core composite rudder blade according to claim 1 and 2, is characterized in that: described composite material skin (7)Adopt zoning design, mainly comprise that rudder stock district, exhibition are to He Sui border area, expansion area, wherein rudder stock district covering thickness maximum, exhibition is taken second place to expansion area, withBorder area is the thinnest.
5. high rigidity light quality and solid core composite rudder blade according to claim 1 and 2, is characterized in that: described rudder stock district steel frame (1)With the mode that is fixedly connected with of described composite skeleton (2) for to extend two-layered steel plates at the connecting portion of described rudder stock district steel frame (1), by instituteState composite skeleton (2) and insert between two-layered steel plates, be fixed connection.
6. high rigidity light quality and solid core composite rudder blade according to claim 5, is characterized in that: described rudder stock district steel frame (1) is connectingConnecing the extended two-layered steel plates in position is C shape or rectangle.
CN201610018207.0A 2016-01-12 2016-01-12 High-rigidity light solid composite rudder blade Active CN105599889B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610018207.0A CN105599889B (en) 2016-01-12 2016-01-12 High-rigidity light solid composite rudder blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610018207.0A CN105599889B (en) 2016-01-12 2016-01-12 High-rigidity light solid composite rudder blade

Publications (2)

Publication Number Publication Date
CN105599889A true CN105599889A (en) 2016-05-25
CN105599889B CN105599889B (en) 2019-12-27

Family

ID=55980365

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610018207.0A Active CN105599889B (en) 2016-01-12 2016-01-12 High-rigidity light solid composite rudder blade

Country Status (1)

Country Link
CN (1) CN105599889B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106548810A (en) * 2017-01-16 2017-03-29 江苏恒神股份有限公司 Carbon fibre composite indication control board operates skeleton
CN106584883A (en) * 2016-12-07 2017-04-26 中国人民解放军海军工程大学 Underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit
JP2018203236A (en) * 2017-05-30 2018-12-27 ベッカー マリン システムズ ゲーエムベーハーbecker marine systems GmbH Rudder plate provided with rudder hub and rudder hub for rudder plate
CN110001912A (en) * 2017-11-28 2019-07-12 贝克船舶系统有限公司 Rudder blade and its manufacturing method, its section, rudder blade or the section for improving puopulsion equipment
CN110509645A (en) * 2019-08-31 2019-11-29 中国人民解放军海军工程大学 Height top-ups the releasable functional material portable plate of force characteristic light high-stiffness
CN110588927A (en) * 2019-10-23 2019-12-20 中国科学院沈阳自动化研究所 Light rudder plate system
CN110901827A (en) * 2019-12-05 2020-03-24 中国船舶重工集团公司第七一九研究所 Ship and accessory structure thereof
CN111038644A (en) * 2020-02-20 2020-04-21 王涵琳 Steel-plastic assembling ship
CN111907087A (en) * 2020-07-10 2020-11-10 航天特种材料及工艺技术研究所 Forming assembly tool and manufacturing method for composite unmanned aerial vehicle horizontal tail
CN115258122A (en) * 2022-07-07 2022-11-01 中国船舶重工集团公司第七一五研究所 Light high-strength composite material alloy solid rudder plate and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410458A (en) * 2004-01-27 2005-08-03 David Irving A moulded fibre reinforced composite product with a core
CN101970215A (en) * 2008-03-12 2011-02-09 空中客车营运有限公司 Method for producing an integral fibre composite part
CN102991661A (en) * 2012-09-30 2013-03-27 浙江联洋复合材料有限公司 Carbon fiber rudder stock and manufacturing method thereof
CN103754353A (en) * 2013-12-09 2014-04-30 中国航空工业集团公司西安飞机设计研究所 Composite material elevator
CN104114446A (en) * 2012-02-15 2014-10-22 三菱重工业株式会社 Rudder device for marine vessel, and marine vessel provided with same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410458A (en) * 2004-01-27 2005-08-03 David Irving A moulded fibre reinforced composite product with a core
CN101970215A (en) * 2008-03-12 2011-02-09 空中客车营运有限公司 Method for producing an integral fibre composite part
CN104114446A (en) * 2012-02-15 2014-10-22 三菱重工业株式会社 Rudder device for marine vessel, and marine vessel provided with same
CN102991661A (en) * 2012-09-30 2013-03-27 浙江联洋复合材料有限公司 Carbon fiber rudder stock and manufacturing method thereof
CN103754353A (en) * 2013-12-09 2014-04-30 中国航空工业集团公司西安飞机设计研究所 Composite material elevator

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106584883A (en) * 2016-12-07 2017-04-26 中国人民解放军海军工程大学 Underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit
CN106584883B (en) * 2016-12-07 2019-06-18 中国人民解放军海军工程大学 Underwater lightweight buoyancy offset-type composite material solid core crashworthiness endergonic structure unit
CN106548810A (en) * 2017-01-16 2017-03-29 江苏恒神股份有限公司 Carbon fibre composite indication control board operates skeleton
JP2018203236A (en) * 2017-05-30 2018-12-27 ベッカー マリン システムズ ゲーエムベーハーbecker marine systems GmbH Rudder plate provided with rudder hub and rudder hub for rudder plate
CN110001912A (en) * 2017-11-28 2019-07-12 贝克船舶系统有限公司 Rudder blade and its manufacturing method, its section, rudder blade or the section for improving puopulsion equipment
CN110509645B (en) * 2019-08-31 2022-03-25 中国人民解放军海军工程大学 High positive buoyancy characteristic light high-rigidity releasable functional composite material detachable plate
CN110509645A (en) * 2019-08-31 2019-11-29 中国人民解放军海军工程大学 Height top-ups the releasable functional material portable plate of force characteristic light high-stiffness
CN110588927A (en) * 2019-10-23 2019-12-20 中国科学院沈阳自动化研究所 Light rudder plate system
CN110588927B (en) * 2019-10-23 2021-02-19 中国科学院沈阳自动化研究所 Light rudder plate system
CN110901827A (en) * 2019-12-05 2020-03-24 中国船舶重工集团公司第七一九研究所 Ship and accessory structure thereof
CN111038644A (en) * 2020-02-20 2020-04-21 王涵琳 Steel-plastic assembling ship
CN111907087A (en) * 2020-07-10 2020-11-10 航天特种材料及工艺技术研究所 Forming assembly tool and manufacturing method for composite unmanned aerial vehicle horizontal tail
CN115258122A (en) * 2022-07-07 2022-11-01 中国船舶重工集团公司第七一五研究所 Light high-strength composite material alloy solid rudder plate and preparation method thereof
CN115258122B (en) * 2022-07-07 2023-09-08 中国船舶重工集团公司第七一五研究所 Light high-strength composite alloy solid rudder plate and preparation method thereof

Also Published As

Publication number Publication date
CN105599889B (en) 2019-12-27

Similar Documents

Publication Publication Date Title
CN105599889A (en) Solid composite rudder blade high in rigidity and low in weight
CN103274024A (en) Composite damping soundproof structure of ship compartment bulkhead
CN101718080B (en) Composite material bridge anti-collision device
CN201052677Y (en) Lattice reinforced composite material sandwich structure
CN203050102U (en) Forming wooden building round template
CN203307773U (en) Honeycomb lattice reinforced composite material double-cylinder structure and anti-collision system applying same
NO173008B (en) COMPOSITION MATERIAL IN THE FORM OF A SUPPLY PLATE AND PROCEDURE FOR ITS MANUFACTURING
CN105500867B (en) Novel composite material sandwich plate connecting structure without metal connecting piece and design method thereof
US4365580A (en) Hull construction
CN106760212A (en) A kind of ripple multiple tube seawater marine sand concrete structure
CN201553978U (en) Composite material bridge anti-collision device
CN203758719U (en) Sandwich-type structural machine-body fluttering model
CN105971308B (en) Villa waterborne
CN209649647U (en) Lateral honeycomb sandwich panel
CN110509645B (en) High positive buoyancy characteristic light high-rigidity releasable functional composite material detachable plate
CN104071313A (en) Anti-shock energy-absorbing covering layer capable of elastically bending
CN206394809U (en) A kind of container ship torsion box and hatch closed structure
CN111942518A (en) Novel cap-shaped rib structure made of functional composite material
CN103306491A (en) FRP reinforcement arc concrete impact resistant column
CN203111443U (en) Expansion type small water plane catamaran ship
CN203888998U (en) Large glass fiber reinforced plastic box keel structure of ship
CN206554314U (en) A kind of new waterproof cracking resistance wall body structure
CN103786830B (en) Fiberglass laminated deck and its processing technology with strengthening groove
CN103786832A (en) GRP (Glass Reinforced Plastic) composite deck and processing technology
CN104973222A (en) Composite material elastomer navigation mark floating drum

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant