Wheat seed drill sowing rate adjustment method: First, change the transmission ratio; second is to change the working length of the sowing sheave. Generally, the transmission ratio is selected according to the seeding amount, and then the working length of the sheave is adjusted. The basic principle is to use a smaller transmission ratio and a larger working length of the sheave. The specific adjustment method is introduced as follows:
1. Consistency adjustment of seeding rate in each row. Place the sowing amount adjustment handle at “Zeroâ€, and the working length of the sheave should be equal to zero, that is, the end surface of the blocking sleeve should be in contact with the seed wheel retaining ring. Then inspect the metering devices one by one, release the clamps of the metering device that are not in contact with the device, and tap the blocking cylinder lightly to make contact and then tighten the metering device.
2. Adjustment of Tongue-opening Consistency. Pull the control handle to make contact with the tongue and the protrusion of the blocking sleeve and fix the control handle. Then, check the position of the tongues one by one. If they are not in contact, loosen the nuts for fixing the tongues and tap the tongues to make contact.
3, sowing wheat, row tongue opening to adjust the minimum opening. Don't change the tongue opening degree as a method to adjust the sowing volume, otherwise it will reduce the sowing stability and uniformity.
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