Fault Analysis of Hydraulic System of Hydraulic Boarding Bridge

The hydraulic boarding bridge is a crucial tool used in cargo loading and unloading operations. It allows forklifts to easily access the interior of trucks or containers, making bulk handling more efficient and convenient. This device significantly enhances operational efficiency and is essential for logistics companies. Understanding how to properly analyze the causes of hydraulic system issues can help ensure correct maintenance and usage of the boarding bridge. As society continues to advance, hydraulic boarding bridges are becoming increasingly common across various industries. Ensuring the smooth operation of the hydraulic system is vital for maintaining reliability and productivity. One of the most important factors in keeping the system running smoothly is selecting the right type and viscosity of hydraulic oil. Additionally, being able to quickly identify the root cause of a failure and apply an effective solution is equally important. Hydraulic systems consist of mechanical, hydraulic, electrical, and instrumentation components. Therefore, when diagnosing failures, it's essential to have a thorough understanding of the system’s transmission principles, structural design, component functions, and material specifications. Since the hydraulic system operates as a sealed pressure system, internal processes such as oil flow, component movement, and seal damage are not easily visible. This makes fault diagnosis challenging and often requires careful observation and analysis. There are several reasons why a hydraulic boarding bridge might fail. These can be broadly categorized into three main areas: First, mechanical failures due to poor design, incorrect installation clearances, substandard hydraulic components, or improper seal selection. These issues typically do not involve the hydraulic oil itself. Second, failures caused by operator error. This includes mistakes like incorrect valve operation, sudden power loss, excessive temperature or pressure, or using the wrong type of oil during refueling. While these errors may not directly relate to oil quality, they can sometimes be detected through changes in the oil’s condition. Third, failures resulting from poor-quality hydraulic oil. This often happens when the wrong oil is used, or when the oil is not replaced in a timely manner. Using subpar oil can lead to serious performance issues and reduce the lifespan of the system. Because the hydraulic boarding bridge is frequently used, malfunctions are not uncommon. Common causes include: 1. Inherent equipment faults, such as flawed design or improper installation. 2. Incorrect operation, which can lead to internal damage and increased maintenance needs. Sudden power cuts, high pressure, or temperature fluctuations can all contribute to this. Operators should maintain proper oil levels and keep the tank clean. 3. Poor-quality hydraulic oil, which can prevent the system from functioning correctly. If low-quality oil is used or if the oil is not changed regularly, it can lead to long-term damage. Fault Analysis of Hydraulic System of Hydraulic Loading Bridge

Carbon Steel Washer

Low carbon USS flat washers, typically used with Grade 8 or hardened steel bolting, are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. USS (United States Standard) flat washers have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. ASTM F844 covers the standard specifications for unhardened steel flat washers for general use. Available in zinc plated finish. Zinc plating sacrifices itself, corroding before the base material, offering added corrosion resistance.

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