This standard specifies the clearance range around the suspension point on agricultural implements connected to agricultural wheeled tractors through a three-point suspension. JB/T 6684-1993 Clearance range on agricultural implements connected to a three-point suspension JB/T6684-1993 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T 6684-93
Clearance range on agricultural implements connected with three-point hitch
Issued on June 4, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1994
Machinery Industry Standard of the People's Republic of China
Clearance range on agricultural implements connected with three-point hitch 1 Subject content and scope of application
JB/T 6684-93
This standard specifies the clearance range around the suspension point on agricultural implements connected to agricultural wheeled tractors through three-point hitch. This standard applies to agricultural implements connected with the three-point hitch specified in GB 1593.1 and to agricultural implement couplers. It can be used as a reference for agricultural implements connected with other coupling devices and to other types of tractors. 2 Reference standards
GBi593.1 Three-point hitch for agricultural wheeled tractors Part: Classes 1, 2, and 3 3 TerminologywwW.bzxz.Net
3.1 The general terms of this standard shall be in accordance with the provisions of GB1593.1. 3.2 Implement coupler: a device that connects the implement to the three-point hitch of the tractor. 4 Form and size
Without considering the adjustment mechanism and width of the implement, the form and size of the clearance around the suspension point on the implement shall comply with the provisions of Figures 1 to 4 and Table 1.
Upper suspension point coupling pin, vertical spacing
Upper suspension point coupling pin, vertical spacing
Upper and lower suspension point coupling pin, horizontal position lower suspension point coupling pin, horizontal spacing
Lower suspension point coupling pin, vertical spacing
Upper suspension point coupling pin, horizontal spacing
Lower suspension point coupling pin, vertical spacing
Column height
Lower suspension point span
Coupling pin flange diameter
Note: 1) Applicable to couplers with upper hooks. 1
2) These dimensions should be consistent with the provisions of GB1593.1 and can be changed if necessary for special agricultural implements. Approved by the Ministry of Machinery Industry on June 4, 1993
Implemented on January 1, 1994
Fork-type coupling
Lower suspension point
JB/T6684-93
Figure 1 Clearance range on the implement when the transport angle is tilted forward relative to the plumb line during liftingJB/T6684-93
Figure 2 Clearance range on the implement when the transport angle is tilted forward relative to the plumb line during lifting Figure 3 The range of clearance on the implement when the transport inclination angle relative to the plumb line remains unchanged during the lifting process (axonometric view) x
Fork-type connection
Below is the hanging point
JB/T6684-93
Figure 4 The range of clearance on the implement when the transport inclination angle relative to the plumb line remains unchanged during the lifting process Additional remarks:
This standard was proposed and managed by the Chinese Academy of Agricultural Mechanization Sciences, Ministry of Machinery Industry. This standard was drafted by the Chinese Academy of Agricultural Mechanization Sciences. The main drafters of this standard were Feng Yongding and Zhang Weisheng. 200
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