pawl lever

简明释义

掣手杆

英英释义

例句

1.In the bicycle's gear system, the pawl lever plays a crucial role in shifting gears.

在自行车的变速系统中，棘轮杠杆在换挡中起着至关重要的作用。

2.When the pawl lever is engaged, it prevents the gear from moving backward.

当棘轮杠杆被锁定时，它可以防止齿轮向后移动。

3.The mechanic adjusted the pawl lever to ensure the machine operated smoothly.

机械师调整了棘轮杠杆以确保机器平稳运行。

4.The engineer explained how the pawl lever mechanism works in the context of safety brakes.

工程师解释了在安全刹车上下文中，棘轮杠杆机制是如何工作的。

5.To lock the position of the table, turn the pawl lever until it clicks into place.

要锁定桌子的位子，请将棘轮杠杆旋转至卡入位置。

作文

The mechanism of machines often involves various components that work together to achieve a specific function. One such component is the pawl lever, which plays a crucial role in many mechanical systems. Understanding the function and importance of the pawl lever can provide insight into how machines operate efficiently. A pawl lever is a device that allows motion in one direction while preventing it in the opposite direction. This is accomplished through a simple yet effective design: the pawl, which is a pivoting lever, engages with a ratchet wheel. When the machine operates, the ratchet wheel turns in a designated direction, and the pawl lever catches onto the teeth of the wheel, allowing it to move forward. However, when the wheel attempts to turn in the reverse direction, the pawl lever locks into place, preventing any backward motion. This mechanism is essential in applications where controlled movement is necessary, such as in clocks, winches, and various types of machinery.The significance of the pawl lever extends beyond its basic functionality. It embodies principles of mechanical advantage and efficiency. By allowing movement in only one direction, it ensures that energy is not wasted on unnecessary backward motion. This efficiency is particularly important in high-speed machinery, where even a small amount of wasted energy can lead to significant losses over time.Moreover, the pawl lever is a fundamental component in safety mechanisms. In devices like elevators and hoists, the pawl lever prevents accidental falls by locking the load in place if the primary lifting mechanism fails. This safety feature is crucial in protecting both the equipment and the individuals who rely on these machines for their daily tasks.In addition to its practical applications, the pawl lever also serves as an excellent example of how simple mechanical solutions can solve complex problems. Engineers and designers often look to such mechanisms when creating new devices or improving existing ones. The ingenuity behind the pawl lever demonstrates how a well-thought-out design can lead to reliable and efficient operation.In conclusion, the pawl lever is a vital component in many mechanical systems, providing controlled movement and enhancing safety. Its design illustrates the principles of efficiency and mechanical advantage, making it an invaluable asset in various applications. Understanding the pawl lever not only deepens our comprehension of mechanical systems but also highlights the importance of thoughtful engineering in creating effective solutions to everyday challenges.

机械的机制通常涉及各种组件，这些组件共同工作以实现特定功能。其中一个组件是爪杠杆，它在许多机械系统中发挥着关键作用。理解爪杠杆的功能和重要性可以提供对机器高效运作的深入了解。爪杠杆是一种允许单向运动而防止反向运动的装置。这是通过简单而有效的设计实现的：爪子作为一个Pivoting杠杆，与棘轮相接。当机器运作时，棘轮朝指定方向转动，爪杠杆钩住轮子的齿，允许其向前移动。然而，当轮子试图向反方向转动时，爪杠杆锁定到位，阻止任何反向运动。这种机制在需要控制运动的应用中至关重要，例如在时钟、卷扬机和各种类型的机械中。爪杠杆的重要性超出了其基本功能。它体现了机械优势和效率的原则。通过只允许一个方向的运动，它确保能量不会在不必要的反向运动中浪费。这种效率在高速机械中尤为重要，因为即使是少量的能量浪费也会导致随着时间推移的重大损失。此外，爪杠杆还是安全机制中的基本组件。在电梯和起重机等设备中，爪杠杆通过在主要提升机制失效时锁定负载，防止意外坠落。这个安全特性对于保护设备和依赖这些机器完成日常任务的个人至关重要。除了其实际应用外，爪杠杆也是一个简单机械解决方案如何解决复杂问题的绝佳例子。工程师和设计师在创造新设备或改善现有设备时，常常会寻找这样的机制。爪杠杆背后的聪明才智表明，经过深思熟虑的设计可以导致可靠和高效的操作。总之，爪杠杆是许多机械系统中的重要组成部分，提供控制运动并增强安全性。它的设计体现了效率和机械优势的原则，使其在各种应用中成为宝贵的资产。理解爪杠杆不仅加深了我们对机械系统的理解，还突显了在创造有效解决方案以应对日常挑战时深思熟虑的工程设计的重要性。