Standard No.:	GB/T 7120-2009
English Name:	Three-point quick-attaching coupler of implement to agricultural wheeled tractors—Category 3N、4N
Chinese Name:	农业轮式拖拉机和机具三点悬挂挂接器 3N类、4N类
Chinese Classification:	T62    Hydraulic lift system
Professional Classification:	GB    National Standard
ICS Classification:	65.060.10 65.060.10    Agricultural tractors and trailed vehicles 65.060.10
Source Content Issued by:	AQSIQ; SAC
Issued on:	2009-11-15
Implemented on:	2010-5-1
Status:	superseded
Superseded by:	GB/T 7120-1986 Three-Point hitch implement quick-attaching coupler of agricultural wheeled tractors--Category 3N
Superseded on:	1987-9-1
Superseding:	GB/T 7120-1986 Three-Point hitch implement quick-attaching coupler of agricultural wheeled tractors--Category 3N
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	160.0
Delivery:	via email in 1~3 business day

本标准规定了3N 类和4N 类窄型挂接器、GB/T1593.1-1996推荐的下悬挂点间距离较小的3类和4类特殊农具的挂接器、GB/T1593.1-1996规定的3类和4类三点悬挂装置农业轮式拖拉机联结尺寸及空间尺寸范围。
本标准适用于GB/T1593.1-1996中规定的3类和4类的农业轮式拖拉机使用双后轮或进行窄行距作业的窄轮距的三点悬挂装置。
本标准不包括锁闩机构的设计和三点悬挂挂接器部件的设计。