Conjunto de apoio de braço FAW: O 4 Componentes críticos para uma entrada segura na cabine

Welcome to this critical safety and ergonomic analysis of the Conjunto de apoio de braço FAW. Este é o completo, 4-tipo de componente, serviço pesado “assist handle” system for the cab of the FAW Jiefang CA4251P66K24T1A3E5 6×4 trator semirreboque diesel. Isto não é um “conforto” braço; it is a primary structural component. Seu núcleo “lógica” é fornecer um ambiente seguro, load-bearing hand-hold, enabling a driver to safely maintain “3-point contact” when climbing into or out of the high cab-over-engine.

O Conjunto de apoio de braço FAW is an integral part of the vehicle’s safety and access “lógica,” working in conjunction with the ‘Wing Panel Logic Assembly’ (Conjunto 622) passos. This system is comprised of two mirror-image ‘Armrest Assemblies’ (Esquerda: 5302115-D03, Certo: 5302120-D03) and a robust 14-piece fastener kit. O “lógica” of its design is to provide an unyielding anchor point capable of supporting the full body weight of a driver, in all weather conditions.

Este guia detalhado é um recurso essencial para técnicos de oficina, collision specialists, and fleet safety managers. Vamos desconstruir todo Conjunto de apoio de braço FAW em seu 4 Unidade mínima utilizável distinta (Universidade Estadual de Moscou) tipos. Iremos analisar o “structural core” logic of the main handles, their ergonomic and material design, e o crítico, dual-type “antivibração” fastener system that secures them directly to the cab’s structural A-pillars.

Essencial 1: O “Segurança & Ergonômico” Lógica (Universidades Estadunidenses 1 & 2) (O “Mais longo” Módulo)

Os principais componentes do Conjunto de apoio de braço FAW are the ‘Left armrest assy’ (5302115-D03) and ‘Right armrest assy’ (5302120-D03). These are the main structural MSUs. As “esquerda” e “certo” peças, they are mirror images, mas o seu “lógica” is identical: to provide a safe, ergonômico “assist handle” for cab ingress and egress.

1. O “3-Ponto de contato” Lógica de Segurança:

Este é o #1 “lógica” desta assembleia. Slips and falls from heavy equipment are a leading cause of driver injury. Occupational safety regulations mandate a “3-point contact” rule, meaning the driver must always have two hands and one foot, or two feet and one hand, in contact with the vehicle when climbing or descending.

O Conjunto de apoio de braço FAW é o “hand” part of this equation. It is precisely positioned on the cab’s A-pillar to work in concert with the ‘3-stage step panel’ (Conjunto 622). Isso é “lógica” is to be at the perfect height to allow a driver to pull their entire body weight up, transitioning their grip from the lower handle to the upper handle as they ascend into the cab.

2. O “Ergonômico” Lógica (Projeto):

O desenho do Conjunto de apoio de braço FAW is not arbitrary. Isso é “lógica” is based on ergonomics.

• Diâmetro & Shape: The handle is molded to a specific diameter that allows for a full, poderoso “power grip” even when the driver is wearing thick, isolado, or wet work gloves.
• Texture & Material: The surface is a non-slip, “pebbled” ou “stippled” texture. Esse “lógica” provides maximum friction, even when the handle is covered in rain, neve, ou óleo diesel.
• Angle & Autorização: The handle is mounted at a comfortable angle and provides several inches of “clearance” from the cab’s body, ensuring the driver’s knuckles do not get scraped or pinched.

Essencial 2: O “Núcleo Estrutural” Lógica Material

A common misconception is that the Conjunto de apoio de braço FAW is just a piece of plastic. This is incorrect. O “lógica” of its construction is a “aço em polímero” projeto, similar to a modern steering wheel.

The Steel “Armature”: The true “lógica” of this MSU is a hidden internal structure. Inside the polymer molding is a heavy-duty, fabricated steel “armadura” ou “core.” This steel core provides the actual structural strength. This core has the mounting plates with the 7 bolt holes, and it is this steel that is fastened directly to the cab’s structural ‘Welded Cab Assembly’ (Conjunto 617) Pilar A.

The Polymer “Sobremoldado”: The plastic that the driver touches is an “over-mold.” Esse “lógica” is what provides all the ergonomic and comfort benefits:

• Thermal Break: The polymer is a “thermal break.” It prevents the driver from grabbing bare, freezing-cold steel in a -30°C winter or a painfully hot, sun-baked steel bar in a +50°C summer.
• Corrosion Proofing: The over-mold provides a 100% waterproof and airtight seal *around* the steel core, making the Conjunto de apoio de braço FAW completely immune to rust.
• Amortecimento de vibração: The softer polymer helps to damp high-frequency “zumbido” do motor, making it more comfortable to hold.

As MSUs, these are high-wear items. They are replaced when the outer polymer is cracked (exposing the steel core), or if the unit is bent or broken in a collision.

Essencial 3: O “Antivibração” Lógica do Fixador (Universidades Estadunidenses 3 & 4)

Este grupo final de MSUs é o “lógica” que garante o Conjunto de apoio de braço FAW stays “rock solid” for the life of the truck. This system is subjected to the constant “pulling” force of drivers *and* the constant, high-frequency “zumbido” do motor diesel.

O “lógica de fixação” is to use 14 total “Parafusos Combinados,” split into two different grip-lengths.

Universidade Estadual de Moscou 3: 'Parafuso combinado’ (CQ1460816F6) – Quantidade 6

Universidade Estadual de Moscou 4: 'Parafuso combinado’ (CQ1460825F6) – Quantidade 8

O “lógica” de 14 total bolts means each armrest (Esquerda e Direita) is secured by **seven** bolts. This is a massively over-engineered, high-strength connection, proving this is a structural, load-bearing component.

O “Combinação” (combinação) logic is the most critical feature. These are not simple bolts. They have a *captive, arruela de pressão pré-instalada* (Por exemplo, uma arruela serrilhada ou de pressão) under the head. Esse “lógica” é 100% about anti-vibration.

The lock washer bites into the steel armature of the handle and the steel A-pillar of the cab, creating constant tension. This makes it physically impossible for the bolt to back out or loosen from vibration. This is what prevents the Conjunto de apoio de braço FAW from developing a “wiggle” ou “chocalho” ao longo do tempo, which would lead to a catastrophic shear failure. The two different part numbers (CQ1460816F6 and CQ1460825F6) simply refer to different lengths, as the bolts must pass through different thicknesses of the A-pillar’s reinforced structure.

FAW Armrest Assembly Parts List & Especificações

A tabela a seguir fornece o completo, detalhamento de todos 4 tipos de componentes identificados no Conjunto de apoio de braço FAW system for the FAW CA4251P66K24T1A3E5 tractor.

Especificações

As especificações para o Conjunto de apoio de braço FAW são definidos por sua função como um produto crítico para a segurança, structural grab handle for cab access.