炮闩-小白求问
炮闩-小白求问图1中，炮闩都带点弧形；而图2中，都直愣愣的。感觉图1中，炮闩作圆弧运动可以直接‘整’进炮尾；图2，直愣愣的炮闩，不会被挡住吗？
求问？谢谢
PS:表述不好，望海涵~~~
你说的弧形和直楞部位，能画图表示吗？ mathewwu 发表于 2015-7-28 13:48
你说的弧形和直楞部位，能画图表示吗？
您好
不知道我这样是否表述明白
我知道楼主要表达什么，我也有这个问题，但是不知道如何描述，要是有动画，边演示边说明，就好了。 本帖最后由 mathewwu 于 2015-7-29 21:44 编辑
这两种炮栓都属于断隔螺纹式，但图一是早期的简单形式，把360度转一圈的螺纹切成两半，从缺口插入后要旋转90度才能使阴阳两面咬合。下面一种Welin式只要旋转约20度就可咬合，而且螺纹成“阶梯式”且不同径（越多阶旋转度越小），可使咬合更牢固。其余请参考英文维基。
From Wiki:
The Welin breech block was a revolutionary stepped, interrupted thread design for locking artillery breeches, invented by Axel Welin in 1889 or 1890. Shortly after, Vickers acquired the British patents.The screw design incorporated multiple "steps" of threads of progressively increasing radius, each step occupying the same circular sector, such as the four steps seen in the accompanying photograph of a 16-inch gun breech and block.
Each step engaged with its matching thread cut in the gun breech when inserted and rotated. A gap in the thread steps was still necessary for the insertion of the largest step before rotation, so the area of the breech secured by threads in the block was number of steps / (1 + number of steps) x length of the screw.
This was a major improvement on previous non-stepped designs such as the de Bange system, which had only a single thread step and hence only half of the block's circumference had a thread which engaged with the breech, necessitating a fairly long screw to achieve a secure lock. The much greater threaded area of the Welin block allowed it to be shorter, allowing faster opening as it could be swung down or to the side after being withdrawn a much shorter distance than previous designs. It was also simpler and more secure.
The Welin breech was a single motion screw, allowing it to be operated much faster than previous interrupted-thread breeches, and it became very common on British and American large calibre naval artillery and also field artillery above about 4.5 inches (114 mm). mathewwu 发表于 2015-7-29 21:43
这两种炮栓都属于断隔螺纹式，但图一是早期的简单形式，把360度转一圈的螺纹切成两半，从缺口插入后要旋转9 ...
老大
再问一下问题啊
战舰的船体建造时的钢板（不是装甲，就是结构用料）有多厚啊？谢谢 wangker911 发表于 2015-7-30 11:23
老大
再问一下问题啊
战舰的船体建造时的钢板（不是装甲，就是结构用料）有多厚啊？谢谢 ...
我只知道一些火控火炮的皮毛，其他也是小白。 mathewwu 发表于 2015-7-30 11:34
我只知道一些火控火炮的皮毛，其他也是小白。
呵呵
老大客气了
3Q 都属于断隔螺纹式 楼主是不是这个问题？
wewe1188 发表于 2015-7-30 18:52
楼主是不是这个问题？
仁兄好图！！！
就是这个问题 本帖最后由 Go229 于 2015-7-31 11:24 编辑
wangker911 发表于 2015-7-31 09:27
仁兄好图！！！
就是这个问题
有些螺纹式炮闩其实是先旋转开栓，然后炮闩后推，之后在彻底打开的，闭锁程序则反之。这里有个谢里登坦克的视频，你瞧瞧就是这种，从2分35秒开始看谢里登。还有个衣阿华级的从5分30秒开始看衣阿华。不过衣阿华这种是在炮尾的位置上留出来了供炮闩翻转出入时候的空余位置。
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