序言这是CSA M424的第二版。3、制动性能——橡胶轮胎、自行式地下采矿机。它取代了1990年出版的前一版。本版本的更改包括:a）最大额定转速和额定总质量限制已被取消；b） 增加了静液压驱动系统、具有组合制动和转向功能的系统以及设计用于牵引拖车的机器的常用制动要求；c） 增加了对试验报告的要求；d） 关于性能试验期间制动系统控制最大力水平的新附录；和e）一个新的附件，其中包含停车距离的计算值。CSA集团承认，该标准的制定部分是由于加拿大自然资源部CanmetMINING，Land and Minerals Sector的财政支持。 本标准由CSA集团在加拿大劳动法管理者协会-职业安全与健康（CAALL-OSH）的资助下制定，包括省级和地区政府，以及加拿大政府。CSA集团对本标准的内容全权负责，CSA集团和资助机构不承担与使用本标准所含信息有关的任何责任。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。范围1。1概述本标准描述了常用制动系统、辅助制动系统和橡胶驻车系统的最低性能标准- 疲惫的自行式地下采矿机。本标准规定了橡胶轮胎式自行式地下机器的最低制动系统性能，以及验证机器制动系统性能的试验标准。注:1）CSA M424中规定了煤矿和高瓦斯地下矿井所用机器的制动系统的附加要求。1.2）CSA M424对动态和连续减速系统提出了额外要求。4.1.2本标准中的术语“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议；“可”用于表示一个选项或在标准范围内允许的选项。 注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）来定义其应用。

PrefaceThis is the second edition of CSA M424.3, Braking performance - Rubber-tired, self-propelled underground mining machines. It supersedes the previous edition published in 1990. Changes to this edition include: a) maximum rated speed and rated gross mass limitation have been removed; b) service braking requirements have been added for hydrostatic drive systems, systems with combined brake and steering function, and machines designed to tow trailers; c) requirement for test report has been added; d) a new Annex on maximum force levels for braking system controls during performance tests; and e) a new Annex with calculated values for stopping distances. CSA group acknowledges that the development of this Standard was made possible, in part, by the financial support of CanmetMINING, Lands and Minerals Sector, Department of Natural Resources Canada. This Standard was developed by CSA Group with funding support provided by the Canadian Association of Administrators of Labour Law - Occupational Safety and Health (CAALL-OSH), including provincial and territorial governments, as well as the Government of Canada. CSA Group is solely responsible for the content of this Standard, and CSA Group and the funding bodies disclaim any liability in connection with the use of the information contained herein. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.Scope1.1 General This Standard describes minimum performance criteria for the service braking system, secondary braking system, and parking system for rubber-tired, self-propelled underground mining machines. This Standard provides minimum braking system performance for rubber-tired, self-propelled underground machines, and test criteria by which machine braking system performance may be verified.Notes: 1) Additional requirements for brake systems on machines used in coal and gassy underground mines are found in CSA M424.1. 2) Additional requirements for dynamic and continuous retarding systems are found in CSA M424.4.1.2 Terminology In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application.