![]() Hitting a rock generally trips the bottom and releases it from digging until it has passed the rock (auto-reset), or until you back up and relock it (non-auto reset) or until you replace the shear pin (shear pin style). By trying to pull the plow up from under the ground, the equal and opposite reaction is the tires pushing harder against the ground while the plow pushes up from under the ground. Its not magic how it increases the pressure on the tires, its simple physics. By doing this, it temporarily increases the down pressure on the rear tires, increasing traction to help pull the plow through the harder ground. This puts more pressure on the hydraulics, which causes the system to attempt to raise the plow slightly to keep it from digging deeper and becoming harder to pull. As you get into harder ground, the plow will naturally try to dig deeper. The draft system tries to keep the plow at the same depth, and it uses the pressure on the hydraulic rockshaft to do so. That's basically what I said, worded a bit differently. It may be useful in other situations, but plowing is the only job we use draft sensing for here on our farm. As you get into lighter soils, it will allow the plow to drop slightly to increase the draft to where it is set. The three point will respond by trying to lift the plow to counteract that tendency to dig deeper, transferring more force to the rear tires, giving them greater traction to help pull through the rough spot. For example, if you are plowing and hit a hard patch of ground, the plow will try to dig deeper due to the draft load. It can adjust how low the plow is to keep the draft equal as you go through changing ground conditions. What the system does is dynamically transfer the suction force (draft) of a plow or other ground engaging equipment to the rear tires of the tractor, giving you extra traction. A three point hitch will never have down pressure, it relies on the weight of the implement or the draft created by said implement to lower the arms. ![]() The draft sensing won't put down pressure on the three point. ![]()
0 Comments
Leave a Reply. |