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一、概述“力矩限制器”(以下简称“力限器”)是起重机的主要安全保护装置之一。西欧、日本等国,对装设“力限器”有强制性的法律要求。国内,78年一机部部标(草案)也作了规定:“起重量等于或大于16吨的起重机,必须具有起重力矩限制器”。并参照美国SAE标准,提出了初步的使用要求。力限器的发展,近年来主要的内容之一是对整个装置的精度要求。现有各国规范中,要求最严的也许是德国DIN标准:精度±3％。英国标准规定:建筑业使用的各种起重机,凡起重能力超过1吨,就必须装配“力限器”,
I. Overview “Torque limiter” (hereinafter referred to as “force limiter”) is one of the main safety protection devices for cranes. Western Europe, Japan, and other countries have mandatory legal requirements for the installation of “force limiters.” Domestically, the department of the Ministry of Industry and Commerce (Draft) of 78 years also stipulated: “Heavy cranes with a lifting capacity equal to or greater than 16 tons must have a lifting torque limiter.” And with reference to the United States SAE standards, put forward the initial requirements for use. The development of force limiter, one of the main contents in recent years is the accuracy requirement for the entire device. Among the existing national standards, the strictest requirement may be the German DIN standard: the accuracy is ±3%. According to the British Standard, all types of cranes used in the construction industry must be equipped with a “force limiter” for any lifting capacity exceeding 1 ton.