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辉门 DEVA 自润滑轴承技术再次应用于国际大型悬索桥
发布日期:2024-02-07
中轴网中国轴承网)了解,挪威西南部的哈当厄尔峡湾大桥是一座悬索桥,今年建成后将成为全球最长的大桥之一,桥塔间的跨度约有1310米,桥身使用的128个球面滑动轴承是由辉门公司采用DEVA自润滑技术研制的。可以使得桥体能够承受桥面并支撑绳索之间的负载引起的不可避免的轻微移动。
辉门集团 DEVA 股份有限公司的总经理 August Stadlmayr 解释:由于风压、车流量引起的载重/振动以及温度不断变化,悬索桥的桥面会轻微移动。哈当厄尔峡湾大桥的长度长、载重量高,因此在建造时会面临诸多挑战。本公司非常高兴能够研发出这种维护成本较低的解决方案。
传统的滚动轴承不适合长度过长且轻微移动的桥体,在载重持续较高的情况下,它们可能出现俗称渗碳硬化的表面故障。辉门的薄壁自润滑滑动轴承 deva.bm(R) 攻克了这一难题,这种轴承的承载面更大,此外,此类轴承坚固耐用且能够维持桥体的使用,无需修复或更换。
由于采用各轴承独立安装的设计原理,即使滑动层因负载高于设计值而受损或完全损坏,连接头的结构也会受到保护,而且滑动轴承仍能正常工作(但性能会降低)。
整座大桥采用120 个轴径为 160 mm 的球面滑动轴承以及8 个轴径为 300 mm 的球面滑动轴承,后者用于将相邻绳索固定在两个桥塔上。此项能够克服诸多挑战的轴承解决方案由位于德国斯塔特塔棱多夫的辉门集团 DEVA 股份有限公司专门研发,而且结合采用了该公司的成熟标准产品范围内的各种材料。
球接头由不锈钢制成,其中还压入 deva.bm 材质制成的低摩擦滑动轴承;此滑动轴承则由钢、不锈钢或青铜制衬垫以及 deva.metal(R) 材质的表层组成。该表层是粉末冶金青铜材质,但不能渗水或浸油渍;相反,该表层经过高度压缩且涂有一层固体润滑剂,例如石墨或聚四氟乙烯。
轴承套形成了一个两段式球环,轴瓦同样采用 deva.bm 材料,因而,轴承具有较长的自润滑使用寿命、较高的静态和动态负载能力和较低的摩擦性能(因为固态润滑剂均匀分布)。
这种设计通过 deva.metal 材料制成的止推垫圈实现。这些垫圈会吸收轴向压力。这种轴承非常适合以低速空转,而且具有很高的抗高温和抗腐蚀能力。
中轴网获悉,辉门的DEVA滑动轴承解决方案在大桥设计建设项目中不只有这一个案例,当今国际很多知名大桥都受惠于辉门的DEVA技术,比如说瓦伦西亚港口内组成世界一级方程式赛车锦标赛赛道的板桥,安克拉姆附近的佩内河大桥以及汉堡市内的莱德大桥。哈当厄尔峡湾大桥桥塔之间的跨度为 1,310m,桥面距海平面的高度为 55 m,桥体高度为 200m
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  16. SHOW FULL COLUMNS FROM `zzw_news_cat` [ RunTime:0.001555s ]
  17. SELECT * FROM `zzw_news_cat` WHERE `parent_id` = 0 AND `deltime` = '' [ RunTime:0.000436s ]
  18. SELECT COUNT(*) AS think_count FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 84 [ RunTime:0.025941s ]
  19. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 84 ORDER BY `id` DESC [ RunTime:0.031264s ]
  20. SELECT COUNT(*) AS think_count FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 85 [ RunTime:0.006544s ]
  21. SELECT `id`,`catid`,`title`,`thumb`,`addtime`,`fbtime` FROM `zzw_news` WHERE `deltime` = '' AND `catid` = 85 ORDER BY `id` DESC [ RunTime:0.006511s ]
  22. SELECT * FROM `zzw_config` WHERE `id` = 2 LIMIT 1 [ RunTime:0.000636s ]
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