初识紧固件2 (Hi-Lok与Hi-Lite)

Zephyr_One · 发表于 2021-1-9 08:56:02

01

Hi-Lok与Hi-Lite概述

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Hi-Lok与Hi-Lite使用螺帽拧紧，通常可以与锁螺栓互换，常用于不常接近的区域。Hi-Lok又分为标准和轻量级，标准的按功能分为抗拉伸和抗剪切，轻量级的主要功能是抗剪切力。

Hi-Loks and Hi-Lites use self-torqueing nuts and collars. The can often be interchangeably with lockbolts. They cannot be installed as quickly as lockbolts, but be used in less accessible areas. Hi-lock comes in a variety of sizes and in standard and lightweight.

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为了区分标准Hi-Lok，轻量级的叫Hi-Lite，同时在顶部有橙色的标记。

The lightweight versions are called hi-lites, they can be identified by orange color coating on the tip.

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Hi-Lite的螺纹比Hi-Lok短，所以螺帽的长度也会相对变短，因而Hi-Lite替代使用时会减少飞机的总重量，以747为例，减少重量就超过了1000磅。

Like the lightweight lockbolt, a hi-lite has a shortened transition. The shortened boat then requires a shorter collar, to give you an idea of how much weight the hi-lock saved on the 747-400 using these fasteners instead of hi-loks save over 1000 pounds.

Hi-Lok的3D模拟拆卸视频

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The tool has a wrench the keeps the boltfrom spinning while the collar is threaded. The hex portion and the collar automaticallybreak off when the correct tor torque is reached.

Hi-Lok实际拆卸视频参考

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如果Hi-Lok的紧固件的螺帽端无法接近，则必须安装自锁螺帽，使用扳手磅到要求的力矩。

If the boats are difficult to access then the collar won’t work and a self-locking steel nut must be installed manually with a certified torqueing tool.

02

Hi-Lok实际使用

1. Hi-Lok螺栓在波音公司称作六角拧紧螺栓，它与一个带六角螺帽的套环配合在一起达到安装的目的。当拧紧力矩达到规定值后，六角螺帽被剪断。这种Hi-Lok螺栓的优点是拧紧时不需要力矩板手。高锁螺栓是一种高强度永久性紧固件，此紧固件有两部分组成，带有螺纹的pin和带有螺纹的collar，具体情况下还可以用nut替代。螺杆的材料可以是钛合金、合金钢、不锈钢或铝合金；而套环的材料是铝合金、300系列和A286不锈钢。在航空器结构上，不能使用直径小于3/16in的Hi-Lok螺栓。Hi-Lok螺栓有拉伸型凸头、剪切型凸头、拉伸型埋头和剪切型埋头之分，如图所示。

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