Introduction
Drag harrow is an agricultural tool, also called plow, which is mainly used for cultivating, weeding, loosening soil and fertilizing. Its active element includes harrow disc. The disc harrow is an essential part of a drag harrow, with which it can efficiently and quickly cultivate soil, promote soil fertility and achieve better crop growth. As an active component, the disc harrow needs to work all the time and withstand a lot of loads and pressure. Due to its long time use, the disc harrow may be damageddue to some factors, leading to certain consequences.
Analysis of Causes of Damaged Disc Harrow and Repair Plan
1. Overload
The overload of drag harrow and disc harrow can easily cause damage. During operation, if the drag harrow carries too heavy load and rotates speed faster, the load can exceed the rated load and cause ground vibration, which will cause the bolts holding the disc harrow to be broken, thus reducing the stable performance of the disc harrow and leading to disc harrow destruction. In order to prevent overload and damage of disc harrow, it is necessary to check the load of drag harrow regularly and strictly regulate the speed of disc harrow operation to ensure that the rated power is not exceeded.
2. Insufficient lubrication
Big gear of gear box, shaft and other parts is lubricated by lubricating oil, so when the drag harrow is used for a long time, if the lubricating oil is insufficient, the parts will suffer from heavy friction, and the increase of temperature will cause deformation and damage to disc harrow.If the lubricating oil needs to be replenished, it should be done immediately to avoid damage of disc harrow.
3. Poor comprehensive performance
The comprehensive performance of drag harrow components, such as disc harrow, frame, gear box, etc., is related to its running life, as well as its operation performance and efficiency. If the comprehensive performance of the disc harrow is poor, due to its instability, the disc harrow will be subject to higher pressure, resulting in surface damage and fracture.
Repair Plan
1. Overload Prevention
In order to prevent the disc harrow from being overloaded and damaged, it is necessary to check the load of the drag harrow regularly, and strictly regulate the relative speed of the disc harrow and the ground to ensure that the rated power is not exceeded.
2. Improve Lubrication
To avoid the insufficient lubrication caused by disc harrows damage, drag harrow should regularly check the lubricating oil to make sure it is enough and replace as far as necessary.
3. Improve Comprehensive Performance
Improvement of comprehensive performance should start from improving product design in advanced, focusing on the accuracy of transmission components, the performance of bearings and seals, the compatibility of metal materials, the size and accuracy of fasteners, and the surface treatment quality. It is necessary to further improve the shock absorber device and improve the overall performance of the drag harrow.
Conclusion
Disc harrow is an important part of drag harrow, which is easy to be damaged under some factors, such as overload and insufficient lubrication, or due to its poor comprehensive performance. In order to prevent the damage of disc harrow and improve its operation performance, it is necessary to take preventive measures, improve lubrication and enhance comprehensive performance.
