传动元部件在工程机械整机中具有举足轻重的作用,变矩器和变速器(以下简称“双变”)作为工程机械的核心传动元部件,受到主机企业的高度重视,对于某些设备而言,企业能否在变矩器、变速器两大核心零部件的配套上占据主动,某种程度上决定着企业本身的成败。为了更好地掌握设备的核心制造能力,主机制造企业一方面力求使自身与关键供应商的关系变得更为密切,另一方面,一些有实力的制造企业开始锻造自己的配套产业链。目 The transmission components play an important role in the construction machinery. The torque converter and transmission (hereinafter referred to as “double change”), as the core transmission components of construction machinery, are highly valued by the host companies. For some equipment, Say, companies can torque converter, transmission two core components supporting the initiative, to some extent determines the success or failure of the enterprise itself. In order to better grasp the core manufacturing capacity of the equipment, the host manufacturers strive to make their own relationship with key suppliers become more close, on the other hand, some powerful manufacturing companies began to forge their own complementary industrial chain. Head