Приводной вал центрального моста: Деконструкция 10 Важные детали для максимальной надежности трансмиссии

This technical guide provides a complete deconstruction of the Приводной вал центрального моста сборка для FAW Jiefang CA3250P66K2L1T1E 6×4 самосвал. Мы проанализируем 10 distinct types of serviceable components that create this critical link, which is essential for transferring torque from the inter-axle differential to the middle axle.

The Приводной вал центрального моста, also known as an inter-axle propshaft, is a high-speed, high-torque component. Its function is to connect the truck’s transfer case (or inter-axle differential) output to the input pinion of the first (середина) Задняя ось. This specific shaft is relatively short but must endure extreme angles and high rotational speeds, especially when the 6×4 axle lock is engaged. This deconstruction focuses on the serviceable units, providing a clear path for technicians to perform rebuilds and maintenance, which is crucial for maximizing vehicle uptime and ensuring the reliability of the tandem-axle system.

Основной 1: The “Артикуляция” Логика (The Universal Joint Assemblies)

The U-joint is the component that allows the Приводной вал центрального моста to transmit power smoothly across constantly changing angles. This assembly uses two complete U-joints (one at each end), which are constructed from five key serviceable part types.

1. Компонент: ‘Cross and needle roller bearing assy’ (2205030Б761) – Кол-во 2
Этот (Комп 5) is the core of the U-joint, often called the cross or spider. It includes four precision-ground trunnions (оружие) and four pre-packaged needle roller bearing caps. These caps are pressed into the yokes and retain the grease that is critical for smooth, low-friction articulation. Failure of these bearings is a primary cause of Приводной вал центрального моста вибрация.

2. Компонент: ‘Flange yoke’ (2205023Б761) – Кол-во 2
Этот (Комп 2) is the flange that physically connects the U-joint to the vehicle’s flanges (НАПРИМЕР., at the inter-axle differential and the middle axle pinion). The Приводной вал центрального моста assembly requires two of these, one for each U-joint.

3. Компонент: Группа крепежа (Q32914 & Q1851455T) – Кол-во 8 каждый
This group includes the ‘Type I non-metallic insert hex lock nut’ (Комп 1) and the ‘Hexagon flange bolt’ (Комп 3). Этот Логика крепления это система, критичная для безопасности. The non-metallic insert in the nut provides prevailing torque, preventing the bolts from vibrating loose. This is essential for a high-RPM component like the Приводной вал центрального моста.

4. Компонент: ‘Circlip’ (2205041-А0М) – Выбирать 8
Этот (Комп 4) is a precision-fit circlip, or snap ring. The Bill of Materials (спецификация) specifies ‘Select 8’ and lists multiple sub-part numbers (2205042-А0М, 2205043-А0М, и т. д.). Этот Selective Fit Logic is vital for assembly. A technician must select a circlip of a specific thickness to achieve the exact, minimal end-play for the U-joint bearing caps. Using the wrong thickness will lead to either immediate binding or premature failure from excessive movement.

Основной 2: The “Длина & Крутящий момент” Логика (The Shaft Body Assembly)

This group of components forms the main body of the Приводной вал центрального моста. It is responsible for handling the “plunge” (dynamic length change) as the axles articulate and for transferring the full torque load.

1. Компонент: ‘Rear axle drive shaft weld yoke, spline tube and yoke assy’ (2201015-51Б) – Кол-во 1
Этот (Комп 8) является основным структурным компонентом. It consists of the main driveshaft tube, which is permanently welded to a yoke at one end and a spline tube (an internal spline) at the other. Этот Welded Logic is a design choice for maximum strength and rigidity. The welds ensure the yokes and tube act as a single piece, allowing them to transfer immense torque without failure. This is the backbone of the Приводной вал центрального моста.

2. Компонент: ‘Spline shaft yoke assy’ (2205020Б761) – Кол-во 1
Этот (Комп 6) is the ‘slip yoke’. It is a yoke (which holds the other U-joint) that is permanently attached to a matching external spline shaft. This external spline is designed to slide, or plunge, in and out of the spline sleeve (Комп 8).

Этот Plunge Logic is essential for a tandem-axle truck. As the axles articulate over uneven terrain, the distance between them and the transfer case changes. This slip-yoke assembly allows the Приводной вал центрального моста to change length dynamically. This prevents the assembly from binding and destroying the U-joints, transfer case bearings, or axle pinion bearings.

3. Компонент: ‘Grease nipple’ (CQ70001) – Кол-во 1
Этот (Комп 7) is a standard ‘zerk’ fitting. It is threaded into the slip-yoke assembly (Комп 6) to allow for periodic lubrication of the internal and external splines. Regular greasing is the most important maintenance step to prevent the splines from fretting, corroding, or seizing. A dry slip yoke is a common cause of Приводной вал центрального моста отказ.

Основной 3: The “High-Speed Stability” Логика (The Balancing System)

This final component group is dedicated to a single, critical purpose: high-speed rotational stability. Несбалансированный Приводной вал центрального моста will cause destructive, harmonic vibrations throughout the entire vehicle.

1. Компонент: ‘Balance plate’ (2205071C6H & 2205071-А0М) – Кол-во по требованию.
Этот (Комп 9 and Comp 10) are two different types of precisely weighted metal plates. The BOM lists multiple variations for each type and a quantity of ‘As Required’. This indicates the Dynamic Balancing Logic.

After the full Приводной вал центрального моста is assembled, it is spun on a high-speed balancing machine. Electronic sensors detect micro-imbalances. A technician then spot-welds these balance plates (Комп 9 or Comp 10) onto the shaft body (Комп 8) to counteract any heavy spots.

This precision balancing is the final step in manufacturing and is essential for a smooth, vibration-free operation. A shaft that has lost a balance weight will cause immediate and severe vibration, which can quickly destroy seals, подшипники, and U-joints. Это делает Приводной вал центрального моста a precision-tuned component.

Приводной вал центрального моста: Complete 10-Part Serviceable Breakdown

В следующей таблице представлена ​​полная, подробная разбивка всех 10 serviceable component types in the Приводной вал центрального моста сборка для FAW Jiefang CA3250P66K2L1T1E 6×4 самосвал. Components listed as ‘As Required’ or ‘Select’ are precision-fitting parts that must be chosen by the technician to meet build specifications.

Основные характеристики

Спецификации для этого Приводной вал центрального моста are defined by its role as a high-torque, high-angle inter-axle connector. Understanding these specifications is key to ordering the correct assembly for the tandem-axle drivetrain.