Ремень безопасности ФАВ: Критическое глубокое погружение в 6 Основные жизненно важные компоненты

Welcome to this critical safety analysis of the Ремень безопасности ФАВ сборка (Сборка 697). Это полный, 3-point “Внешний” (сторона водителя) seat belt system for the FAW Jiefang CA4251P66K24T1A3E5 6×4 трактор. This is the single most important “логика” assembly for driver safety, and it is a sophisticated, multi-part system that combines mechanical “G-force” датчики, webbing-sensitive locks, and pyrotechnic pre-tensioners.

The “логика” принадлежащий Ремень безопасности ФАВ (P/N 8212010-A86-C00) is to provide “passive” безопасность, “active” restraint, и “all-day” комфорт. It is designed to be comfortable and unrestrictive during normal driving, but to instantly and immovably lock the driver in place during a collision or rollover, working in perfect synchronization with the cab’s airbag system.

This in-depth guide is essential for fleet safety managers, специалисты по столкновениям, и техники. Мы разберем всю Ремень безопасности ФАВ assembly into its core logical and serviceable units. Мы проанализируем “dual-lock” logic of the main ‘Retractor’, а “pyrotechnic” logic of the pre-tensioner, а “energy-absorbing” logic of the webbing, и критический, single-use fasteners that anchor this life-saving system to the cab’s frame.

Основной 1: The “Dual-Lock” Logic of the Retractor (Компонент 1) (The “дольше” Модуль)

The ‘Outer seat belt assy’ (8212010-А86-С00) является основным компонентом. Это основной “черный ящик” принадлежащий Ремень безопасности ФАВ система. Это запечатанный, non-repairable serviceable unit that contains the webbing, the spool, and the two critical “запирание” механизмы.

1. The “Vehicle-Sensitive” Логика (The Pendulum):

Это основной “crash lock.” Inside the retractor is a “G-force sensor,” which is a “логика” system consisting of a weighted pendulum or a ball in a ramp.

How it Works: During normal driving, this pendulum is held in place by gravity. In a sudden deceleration (авария, опрокидывание, or even a severe braking event), the truck’s “инерция” (G-force) causes this pendulum to swing. Этот “swinging logic” actuates a small lever, which in turn releases a “pawl” (a toothed “catch”). This pawl instantly “jams” into a toothed gear on the webbing spool, блокировка Ремень безопасности ФАВ solid. Это “vehicle-sensitive” замок.

2. The “Webbing-Sensitive” Логика (The Clutch):

Это “логика” that locks the belt when *you* pull it too fast. This system works completely independently of the pendulum.

How it Works: The webbing spool (the part the belt winds onto) has a built-in centrifugal clutch. During a slow, normal “тянуть” принадлежащий Ремень безопасности ФАВ, the spool spins slowly and the clutch is disengaged.

Однако, if the driver “yanks” the belt quickly (simulating the body being thrown forward), the spool spins *so fast* that centrifugal force throws small weights or “fly-arms” outward. Этот “логика” of the fly-arms causes them to engage a second locking mechanism, which also jams the spool. Этот “webbing-sensitive” lock is what holds the driver during the “pre-crash” phase, before the main G-force lock engages.

Основной 2: The “Pyrotechnic Pre-Tensioner” Логика

Это “active” safety logic of the Ремень безопасности ФАВ, and it is the most critical serviceable part. The ‘Outer seat belt assy’ (8212010-А86-С00) является а “pyrotechnic” устройство, meaning it contains a small explosive charge.

The “Логика” из “Pre-Tensioning”:

The two mechanical locks (pendulum and clutch) являются “passive”—they only work *after* a high-G or high-speed event has begun. The pre-tensioner is “active.”

In a crash, the truck’s “Airbag Control Unit” (АКУ) detects the impact *in milliseconds*. *Before* the driver has even moved, the ACU sends an electric signal to the Ремень безопасности ФАВ ретрактор.

This signal ignites a “gas generator” (маленький, controlled explosive). This explosion drives a piston that, за долю секунды, *violently spins the retractor spool backwards*. Этот “логика” instantly and forcefully *pulls* the driver back, “pinning” them deep into their seat, removing all “слабый” from the belt.

Этот “pre-tensioning” is what positions the driver perfectly for both the airbag and the “механический” замок. Это “логика” that ensures the driver makes contact with the airbag at the correct time and angle.

Удобство обслуживания (One-Time-Use):

This pyrotechnic charge is **strictly a one-time-use component**. After *any* collision that “пожары” this pre-tensioner, весь Ремень безопасности ФАВ сборка (8212010-А86-С00) является “spent” and *must* be replaced. Это критический, non-negotiable service procedure.

Основной 3: The “Energy & Interface” Логика (Webbing & защелка)

Эта часть Ремень безопасности ФАВ это “интерфейс” between the driver and the locking mechanisms.

The Webbing “Логика”: The “ремень” itself is a high-tech serviceable part. It is not simple cloth; это “controlled-elongation” паутина, woven from high-tensile polyester fibers.

Его “логика” заключается в том, чтобы действовать как “shock absorber.” In a crash, after the pre-tensioner fires, the webbing is designed to *stretch* slightly (а “controlled elongation”). Этот “stretch logic” имеет решающее значение. It *decelerates* the driver’s torso over a few, crucial extra milliseconds. Этот “softens” the impact and reduces the peak G-force on the driver’s ribs and internal organs, preventing catastrophic internal injuries.

Удобство обслуживания: Этот “логика” is why any Ремень безопасности ФАВ with *any* visible damage (a cut, a fray, sun-fading/UV damage, or chemical stains) *must* be replaced. A damaged belt has lost its “stretch logic” and will fail in a crash.

The Latch Plate: This is the metal “tongue” that clicks into the buckle. (The buckle itself is part of the ‘Front Seat Assembly’ 696). Это простой, robust MSU, designed to withstand thousands of pounds of tensile force.

Основной 4: The “Anchor & Finish” Логика (Компонент 2 & Крепежи)

This final group of components is the “installation logic” для Ремень безопасности ФАВ.

Компонент 2: ‘Right side fixed cover-seat belt’ (8212058-А01): Это “косметический” и “защитный” компонент. Его “логика” is to provide a clean, “автомобильного класса” заканчивать, hiding the B-pillar’s upper “D-петля” anchor bolt. It also acts as a “UV Shield,” protecting the webbing and anchor from sunlight, и “комфорт” логика, preventing the driver from snagging clothes on the bolt head.

Застежка “Логика” (Подразумеваемый): The most critical serviceable parts are the (не внесенный в список) высокопрочные болты. A 3-point Ремень безопасности ФАВ has three “якорь” logic points:

• 1. Retractor Anchor: Bolted to the cab floor or B-pillar base.
• 2. D-Loop Anchor: Bolted to the upper B-pillar (hidden by MSU 2).
• 3. Lap Anchor: Bolted to the cab floor near the seat.

These are **Class 10.9 (или выше), “отношение крутящего момента к текучести”** болты. Их “логика” is that they are *designed to stretch* once (like the webbing) to absorb impact. This makes them **strictly single-use**. Любой Ремень безопасности ФАВ fastener that is removed *for any reason* (even just for inspection) *must* be discarded and replaced with a new, OEM-specified bolt. Re-using them is a critical safety failure.

FAW Seat Belt Parts List & Технические характеристики

В следующей таблице представлена ​​полная, detailed breakdown of all component types identified in the Ремень безопасности ФАВ сборка (697) for the FAW CA4251P66K24T1A3E5 tractor.

Технические характеристики

Технические характеристики Ремень безопасности ФАВ assembly are defined by its function as a primary, life-saving, pyrotechnic restraint system.