Chapter 7 Tractor's PTO System Section 3 Hydraulic Lift Hitch 1.Suspension Gear According to the connection points between the suspension gear and body,it can be divided into two-point linkage and three point linkage. (a）》 (b) Figure 7-12 Three point linkage 机被与电子工程家 Automobile and Tractor Northwest A&F University
Automobile and Tractor Northwest A&F University Chapter 7 Tractor’s PTO System 1. Suspension Gear According to the connection points between the suspension gear and body, it can be divided into two-point linkage and three point linkage. Figure 7-12 Three point linkage Section 3 Hydraulic Lift Hitch
Chapter 7 Tractor's PTO System Section 3 Hydraulic Lift Hitch (a) (b) Figure 7-13 Two-point linkage (a)1.Lift shaft 2.Lift arm 3.Upper link 4.Lower link 5.Lifting rod (b)1.Support 2.Upper shaft 3.Lift arm 4.Upper link 5.Lifting rod 6.Lower link 7.Anchoring chain 8.Lower shaft 9.Support base 机械电子工程学 Automobile and Tractor Northwest A&F University
Automobile and Tractor Northwest A&F University Chapter 7 Tractor’s PTO System Figure 7-13 Two-point linkage (a)1. Lift shaft 2. Lift arm 3. Upper link 4. Lower link 5. Lifting rod (b) 1. Support 2. Upper shaft 3. Lift arm 4. Upper link 5. Lifting rod 6. Lower link 7. Anchoring chain 8. Lower shaft 9. Support base Section 3 Hydraulic Lift Hitch
Chapter 7 Tractor's PTO System Section 3 Hydraulic Lift Hitch According to the arranged positions of the suspension gear,it can be divided into the rear suspension,front suspension,side mounting and mid-mounting (a) (b) 机被有电子工程擦 Automobile and Tractor Northwest A&F University
Automobile and Tractor Northwest A&F University Chapter 7 Tractor’s PTO System According to the arranged positions of the suspension gear, it can be divided into the rear suspension, front suspension, side mounting and mid-mounting. Section 3 Hydraulic Lift Hitch
Chapter 7 Tractor's PTO System Section 3 Hydraulic Lift Hitch (c (d 械电子工程学 Automobile and Tractor Northwest A&F University
Automobile and Tractor Northwest A&F University Chapter 7 Tractor’s PTO System Section 3 Hydraulic Lift Hitch
Chapter 7 Tractor's PTO System Section 3 Hydraulic Lift Hitch 2.Tilth Adjustment 2.1 Height Adjustment Farm tools maintain a certain tilth by the land wheel's profile modeling to the ground. When soil specific resistance is consistent,the tilth is uniform,but the tilth is uneven when the soil conditions are nonuniform. Suspension gear can swing freely when cylinder piston is floating. Most weight of farm tools are bear by the land wheel,which increases resistance to farm tools. Soft Hard 机被与电子工程保 Automobile and Tractor Northwest A&F University
Automobile and Tractor Northwest A&F University Chapter 7 Tractor’s PTO System 2. Tilth Adjustment 2.1 Height Adjustment Farm tools maintain a certain tilth by the land wheel’s profile modeling to the ground. When soil specific resistance is consistent, the tilth is uniform, but the tilth is uneven when the soil conditions are nonuniform. Suspension gear can swing freely when cylinder piston is floating. Most weight of farm tools are bear by the land wheel, which increases resistance to farm tools. Section 3 Hydraulic Lift Hitch