journal bearing

简明释义

轴颈;轴承

英英释义

例句

1.The engineer explained how the journal bearing 滑动轴承 reduces friction in the motor.

工程师解释了<顺>滑动轴承<顺>如何减少电动机中的摩擦。

2.A failure in the journal bearing 滑动轴承 can lead to catastrophic engine damage.

<顺>滑动轴承<顺>的故障可能导致发动机的灾难性损坏。

3.The design of the journal bearing 滑动轴承 allows it to support heavy loads effectively.

该<顺>滑动轴承<顺>的设计使其能够有效支撑重载。

4.During maintenance, we found that the journal bearing 滑动轴承 was worn out and needed replacement.

在维护过程中，我们发现<顺>滑动轴承<顺>磨损严重，需要更换。

5.Proper lubrication is essential for the longevity of a journal bearing 滑动轴承.

适当的润滑对<顺>滑动轴承<顺>的使用寿命至关重要。

作文

In the realm of mechanical engineering, one component that plays a crucial role in the functioning of machinery is the journal bearing. A journal bearing is a type of bearing that supports a rotating shaft and allows it to turn smoothly with minimal friction. This is essential in various applications, from small motors to large industrial machines. The design of a journal bearing typically consists of a cylindrical sleeve that encases the shaft and is lubricated to reduce wear and tear over time.The primary function of a journal bearing is to provide a low-friction surface for the shaft to rotate against. This is achieved through a thin film of lubricant that separates the two surfaces, preventing direct contact. The choice of lubricant, whether it be oil or grease, is critical because it affects the performance and longevity of the bearing. Proper lubrication not only minimizes friction but also helps dissipate heat generated during operation, which can be detrimental to the bearing's lifespan.One of the advantages of using a journal bearing is its ability to handle heavy loads. Unlike rolling element bearings, which can become damaged under excessive weight, journal bearings distribute the load evenly across their surface. This characteristic makes them ideal for applications such as automotive engines, where they support crankshafts and connecting rods that experience significant forces during operation.However, journal bearings are not without their challenges. One potential issue is the risk of "bearing failure," which can occur due to inadequate lubrication, contamination, or excessive loading. When a journal bearing fails, it can lead to catastrophic damage to the machinery, resulting in costly repairs and downtime. Therefore, regular maintenance and monitoring of the lubrication system are vital to ensure the reliability of journal bearings.In addition to their mechanical benefits, journal bearings also contribute to the overall efficiency of machines. By reducing friction, they enable motors and engines to operate more smoothly, which can lead to lower energy consumption. This is particularly important in today's world, where energy efficiency is a top priority for many industries. Engineers are constantly seeking ways to enhance the performance of journal bearings, including advancements in materials and lubrication technologies.As technology continues to evolve, so does the design and application of journal bearings. Innovations such as composite materials and advanced lubrication systems are being developed to improve their performance further. These advancements not only extend the life of journal bearings but also enhance their ability to operate under extreme conditions. For example, in aerospace applications, journal bearings must withstand high temperatures and pressures, necessitating the use of specialized materials and lubricants.In conclusion, the journal bearing is a fundamental component in many mechanical systems, providing essential support for rotating shafts while minimizing friction and wear. Its ability to handle heavy loads and operate efficiently makes it a preferred choice in various applications. However, proper maintenance and monitoring are crucial to prevent failure and ensure longevity. As technology advances, the future of journal bearings looks promising, with ongoing innovations aimed at enhancing their performance and reliability in increasingly demanding environments.

在机械工程领域，有一个部件在机器的运作中发挥着至关重要的作用，那就是滑动轴承。滑动轴承是一种支撑旋转轴并允许其平稳转动、减少摩擦的轴承。这在从小型电动机到大型工业机器等各种应用中都是必不可少的。滑动轴承的设计通常由一个圆柱形套筒组成，该套筒包围轴并经过润滑以减少磨损。滑动轴承的主要功能是为轴提供一个低摩擦的表面，使其能够顺利旋转。这是通过一层薄薄的润滑剂膜来实现的，该膜将两个表面分开，防止直接接触。润滑剂的选择，无论是油还是脂，都至关重要，因为它会影响轴承的性能和寿命。适当的润滑不仅可以最小化摩擦，还可以帮助散发在操作过程中产生的热量，这对轴承的使用寿命是有害的。使用滑动轴承的一个优点是它能够承受重负荷。与滚动轴承不同，后者在超载时可能会受到损坏，滑动轴承能够均匀分配负载。这一特性使得它们非常适合用于汽车发动机等应用，在这些应用中，滑动轴承支撑曲轴和连杆，这些部件在运行过程中会经历显著的力量。然而，滑动轴承也并非没有挑战。一个潜在的问题是“轴承失效”的风险，这可能由于润滑不足、污染或过载而发生。当滑动轴承发生故障时，可能会导致机器的灾难性损坏，从而导致昂贵的维修和停机。因此，定期维护和监测润滑系统对于确保滑动轴承的可靠性至关重要。除了机械优势外，滑动轴承还对机器的整体效率做出了贡献。通过减少摩擦，它们使电动机和发动机能够更平稳地运行，从而降低能耗。在当今世界，能效是许多行业的首要任务，工程师们不断寻求提高滑动轴承性能的方法，包括材料和润滑技术的进步。随着技术的不断发展，滑动轴承的设计和应用也在不断演变。复合材料和先进润滑系统等创新正在开发，以进一步提高它们的性能。这些进步不仅延长了滑动轴承的使用寿命，还增强了它们在极端条件下工作的能力。例如，在航空航天应用中，滑动轴承必须承受高温和高压，因此需要使用专门的材料和润滑剂。总之，滑动轴承是许多机械系统中的基本组件，为旋转轴提供必要的支撑，同时最小化摩擦和磨损。它能够承受重负荷并高效运行，使其成为各种应用中的首选。然而，适当的维护和监测对于防止故障和确保长期使用至关重要。随着技术的进步，滑动轴承的未来看起来充满希望，持续的创新旨在提高其在日益苛刻环境中的性能和可靠性。