JT-T 249-2004 内河船舶平式风雨密舱口盖

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1、署臀中华lk民共和国交通行Ak标准JT346,539-2004JT/T138,12,109,247,249一251,258,259,265,343,349,352,358一360-2004内河船系列标准(一)2004-06-03发布2004-09-01实施中华人民共和国交通部发布ICS47.020.50U26备案号:,.蓄中华Ik民共和国交通行」Ik标准JT/T249-2004代替JT/T249-1995内河船舶平式风雨密舱口盖Flate-typeweather-tighthatchcoversforinland-waterwayvessels200

2、4-06-03发布2004-09-01实施中华人民共和国交通部发布JT/丁249-2004目次前言··············，························································，····················，，·········⋯⋯661范围·····································································································⋯⋯672规范性引用文件·，·1··

3、，，，····，，········，···1···，····1··，，··，··1·，··········.，··········，一673分类、结构形式和主要尺寸····。···································，，····⋯⋯，···⋯⋯，..⋯⋯，..⋯⋯674技术要求····························，·········‘-·········、··，·······················，····················‘··⋯675验收···················

4、···，···············，·················，···················，···················⋯⋯686标志······························，···、·············································、·······················⋯⋯69JT/丁249-2004月q吕本标准代替」T/T249-1995《平式水密舱口盖》。本标准与」T/T249-1995相比主要变化如下:—标准适用范围调整为“需要保持平整风雨

5、密开口处气—原B型舱口盖通孔尺寸450mmx500mm调整为450mmx600mm;—增加了C型舱口盖围板尺寸。本标准由全国内河标准化技术委员会(SAC/TC130)提出并归口。本标准起草单位:长江船舶设计院。本标准起草人:王前进、章鸣。本标准于所代替标准的历次版本发布情况为:CB，3215-1984..1T/T249-1995JT/T249-2004内河船舶平式风雨密舱口盖1范围本标准规定了内河船用平式风雨密舱口盖的类型、结构形式、基本尺寸和技术要求。本标准适应于内河船舶需要保持平整风雨密开口处。2规范性引用文件下列文件中的条款通过本标准的引用而成

6、为本标准的条款。凡是注日期的引用文件，其随后所有的修改单{不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。GB/T700碳素结构钢GB/T5574工业用橡胶板3分类、结构形式和主要尺寸3.1分类舱口盖的分类见表to单位为毫米夹扣通孔尺寸螺旋夹扣(D500螺旋夹扣《犯x500450x600AB}tc13fE};{3E'}}eiAfxlfiIxl'aAQG}Q}一中心联动夹扣口巧03.2舱口盖结构形式和主要尺寸3.21A型舱口盖的主要尺寸见图t

7、o3.22B型舱口盖的主要尺寸见图2及表2a3.23C型舱口盖的主要尺寸见图30表2B型舱口盖的主要尺寸单位为毫米通孔尺寸甲板开孔外围板尺寸流水管上盖板重量下盖板重量AxBA,xB,A2义B2中xtkgkg总kg41旧x500a704x794694x78050x6151388气4S0x600749x894730x88050x618.515963.2标记产品标记见示例。示例1:通孔尺寸400x50】长圆形平式双盖风雨密舱口盖标记:舱口盖B400x500JT/T249-2904示例2:通孔尺寸41500圆形平式单盖风雨密舱盖标记:舱口盖C50DJT/T2

8、49-20044技术要求4.1材料和工艺4.1.1风雨密舱口盖的盖板及围板可选用GB/T700规定的普通碳素