مجموعة منطق حماية الجزء الأمامي من FAW: تفكيك 29 المكونات الحرجة

مرحبًا بك في هذا الدليل الفني المهم حول مجموعة منطق حماية الجزء الأمامي من FAW. هذا هو الكامل “FUPD” (Front Underrun Protection Device) نظام FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل. This is not an optional or cosmetic part; إنه أمر بالغ الأهمية, chassis-mounted safety and structural component.

ال مجموعة منطق حماية الجزء الأمامي من FAW هو واجب ثقيل, engineered steel structure. Its primary “منطق” is to provide a low, rigid barrier at the very front of the truck. This system is mandated by safety regulations (like ECE R93) to prevent smaller vehicles from “under-running” (sliding under) the high chassis of the tractor in a frontal collision. It is designed to engage the other vehicle’s crumple zones.

This in-depth guide is an essential resource for professional body shop technicians, مديري الأسطول, ومتخصصين في قطع الغيار. سنقوم بتفكيك الكل مجموعة منطق حماية الجزء الأمامي من FAW فيه 29 مكونات صالحة للخدمة (total quantity of parts listed), including the main ‘Crossmember’ (2802070-91دبليو), the ‘Left Brackets’ (2802021-91دبليو), and all the critical high-tensile fasteners that secure this safety device.

المكون الأساسي: The Main Crossmember (2802070-91دبليو)

قلب ال مجموعة منطق حماية الجزء الأمامي من FAW is the ‘Front underbody protection crossmember welded assy’ (2802070-91دبليو). This is the main horizontal “beam” أو “حاجِز” من النظام. إنها ضخمة, heavy-gauge steel fabrication, likely a C-channel or box-section, designed for one purpose: to absorb and transfer impact energy.

هذا المكون هو “منطق” of the FUPD system. In a frontal collision with a smaller vehicle, this crossmember is the primary point of contact. It is engineered to be extremely strong, preventing the smaller vehicle from going *under* the truck frame and directly impacting the front axle, معدات التوجيه, or engine. This crossmember is the core of the مجموعة منطق حماية الجزء الأمامي من FAW‘s strength.

ال “welded assy” designation signifies that it is a multi-piece fabrication, robotically welded for consistent strength and quality. It is made from high-strength low-alloy (HSLA) فُولاَذ, which is designed to deform in a controlled manner under a severe impact, absorbing energy rather than shattering. This controlled deformation protects the truck’s main frame rails from being bent, which would total the vehicle. A bent or cracked crossmember in the مجموعة منطق حماية الجزء الأمامي من FAW must be replaced immediately.

ال “بين قوسين”: Chassis Connection (2802021-91دبليو)

If the crossmember is the “درع,” the ‘Front underbody protection left bracket’ (2802021-91دبليو) الوحدات هي “arms” that hold it. هذه هي الحرجة, high-strength structural components of the مجموعة منطق حماية الجزء الأمامي من FAW. قائمة الأجزاء تدعو إلى اثنين, which are the left-hand and right-hand symmetrical brackets.

هذه هي “bones” من النظام, forged or fabricated from thick, high-strength steel plate. Their function is to connect the entire مجموعة منطق حماية الجزء الأمامي من FAW to the main chassis frame rails of the truck. They are the “منطق” that transfers impact forces *away* from the bumper and *into* the vehicle’s frame, which is designed to handle them.

These brackets are not designed to be a “crumple zone”; they are designed to be an unyielding, rigid link. They are bolted to the front “قرون” أو “flanges” of the truck’s main C-channel frame, often sharing bolt holes with the front spring hangers or tow hooks. وهذا يضمن مجموعة منطق حماية الجزء الأمامي من FAW is anchored to the strongest part of the truck.

These brackets also provide the primary alignment points. A minor bend in one of these brackets, while not always visible, will cause the entire مجموعة منطق حماية الجزء الأمامي من FAW (and the cosmetic bumper that mounts to it) to appear crooked, with uneven gaps. A misaligned assembly is a sign of compromised safety, as the impact-transfer logic is now flawed.

نظام السحابة: High-Tensile Hardware

A safety system like the مجموعة منطق حماية الجزء الأمامي من FAW is only as strong as its fasteners. This assembly is held together by a specific set of 26 high-tensile bolts and washers designed to withstand extreme shear and vibrational forces.

**1. ‘Hex head bolt’ (CQ1501240T) – 8 وحدات:** These are the primary structural bolts. ال “ت” suffix indicates a high-tensile strength class (على سبيل المثال, 10.9) and a specialized coating. هؤلاء 8 bolts are likely used to connect the ‘Crossmember’ (2802070-91دبليو) to the two ‘Brackets’ (2802021-91دبليو).

**2. ‘Hex head flange bolt’ (Q1851440T) – 10 وحدات:** These are the secondary structural bolts. ال “شفة” head acts as an integrated, غسالة واسعة النطاق. This is critical for spreading the clamping load on the chassis rail, preventing the bolt from “pulling through” the steel frame under extreme force. هؤلاء 10 bolts are almost certainly the ones used to secure the two ‘Brackets’ directly to the truck’s main chassis frame rails.

**3. "حشية الربيع."’ (س40312) – 8 وحدات:** هذه حاسمة “lock washers.” They are paired with the ‘Hex head bolts’ (CQ1501240T). Their function is to exert constant spring tension on the bolt head, physically preventing the bolt from vibrating loose. In a high-vibration environment like a truck chassis, a standard washer would be useless, and the bolts would quickly fail. The total hardware package for the مجموعة منطق حماية الجزء الأمامي من FAW قوي.

This fastener “منطق” هو جزء رئيسي من مجموعة منطق حماية الجزء الأمامي من FAW. Using non-specified, lower-grade bolts (على سبيل المثال, a standard Class 8.8) from a hardware store would compromise the entire safety system, as they would shear off or vibrate loose, causing the FUPD to fail during an impact. فحص مجموعة منطق حماية الجزء الأمامي من FAW includes checking these bolts.

FAW Front Underbody Protection Logic Assembly Parts List

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 29 components identified in the ‘Front Underbody Protection Logic Assembly’ رسم تخطيطي للجرار FAW CA4251P66K24T1A3E5. هذا مجموعة منطق حماية الجزء الأمامي من FAW is a critical safety-of-life component.

المواصفات الفنية وسياق التجميع

المواصفات ل مجموعة منطق حماية الجزء الأمامي من FAW يتم تعريفها من خلال وظيفتها باعتبارها الثقيلة, chassis-mounted safety system. ال مجموعة منطق حماية الجزء الأمامي من FAW is a non-optional, safety-critical system.