BFCF 型踏面制动单元结构分析与应用

Structural Analysis and Application of BFCF Type Tread Brake Unit

摘要

本文深入研究了大同电力机车有限公司为和谐2型电力机车配套生产的核心部件——BFCF型踏面制动单元。该单元集成了常用制动、自动闸瓦间隙调节及弹簧停放制动三个主要功能，具有结构紧凑、性能可靠及空间占用小等显著优势。本文通 过对该制动单元的精密机械构成、楔形力放大动力学过程、丝杠螺母副调节逻辑以及带有X阀保护机制的停放制动原理进 行介绍，阐明了其在现代重载机车安全保障体系中的关键作用。

Abstract

This paper conducts an in-depth study on the BFCF type tread brake unit, a core component produced by Datong Electric Locomotive Co., Ltd. for the Harmony 2 type electric locomotive. This unit integrates three main functions: common braking, automatic brake shoe gap adjustment and spring parking braking. It has significant advantages such as compact structure, reliable performance and small space occupation. This article introduces the precise mechanical composition of the braking unit, the dynamic process of wedge force amplification, the adjustment logic of the lead screw nut pair, and the parking braking principle with the X-valve protection mechanism, clarifying its key role in the safety guarantee system of modern heavy-duty locomotives.

关键词

BFCF型踏面制动单元 / 常用制动 / 停放制动 / X阀

Key words

BFCF-type tread brake unit / Service brake / Parking brake / X valve

参考文献

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