Combined soil preparation machine
Combined operation machinery for tractors
The combined soil preparation machine is a multi-functional machine that works in conjunction with medium and large-sized tractors. It can complete multiple tasks such as stubble crushing, rotary tillage, deep loosening, ridging, and soil compaction in one pass, featuring high operational efficiency. Soil preparation machinery plays a role in breaking up the plow pan, restoring the structure of the soil tillage layer, enhancing the soil's water retention and moisture conservation capacity, eliminating some weeds, reducing pests and diseases, leveling the ground surface, and raising the standards of agricultural mechanization operations. [1]
Chinese name
Combined soil preparation machine
Features
High homework efficiency
Usefulness
arable land
field
Agricultural machinery
Quick Navigation
Mechanical repair
Introduction
The combined tiller is a multi-functional tiller, consisting of a frame, a drawbar, a middle crossbeam, a gearbox, a transmission box, a deep loosening shovel assembly, a stubble crushing component and a rotary tiller component. The transmission box is set on one side of the frame, and there are seven gears meshing with each other inside the transmission box. The middle crossbeam is set parallel to the rotary tiller shaft and the stubble crushing shaft. The deep loosening shovel assembly is set on the crossbeam, and the rotary tiller shaft is directly driven by the output shaft of the gearbox. The side output shaft of the gearbox is connected to the input shaft of the transmission box through a universal joint, and the stubble crushing shaft is driven by the output shaft of the transmission box. A forced leveling device is set on the frame between the harrow disc group and the roller. Principle: A soil leveling shovel is installed under one end of the frame equipped with a suspension frame. At the rear of the frame, a soil crushing roller frame with a soil crushing roller is connected through a regulating screw. A spring-tooth harrow with spring teeth is hung between the soil leveling shovel and the soil crushing roller. During operation, the soil leveling shovel levels the tilled soil layer, the spring-tooth harrow loosens the soil, the soil crushing roller crushes the soil clods, and the roller compacts the surface soil. During operation, the soil layer is not turned over, making it a non-inversion tillage machine.
Mechanical repair
The structure of the combined land preparation machine is relatively complex and its price is rather high. If it is not used correctly, it will break down and affect the economic benefits of the agricultural machinery operation households. How to repair the combined land preparation machine when it breaks down?
The rotary tiller blades are bent or broken. Main reasons:
(1)The rotary tiller blades directly collide with stones, tree roots, etc. in the field.
(2)The machine is suddenly dropped onto a hard ground.
(3)The manufacturing quality of the blades themselves is poor.
Preventive measures:
(1)Before the machine goes into the field for operation, ask the landowner about the field conditions first, remove the stones in the field in advance, and avoid tree roots during operation.
(2) The machine should be lowered slowly.
(3) Purchase qualified rotary tiller blades produced by regular manufacturers.
The stubble cutting knives are bent or broken. Main reasons:
The three reasons mentioned above that cause the rotary tiller knives to bend or break also lead to the bending or breaking of the stubble cutting knives; in addition, making sharp turns during operation and excessive soil penetration depth are also important causes of the bending or breaking of the stubble cutting knives.
Preventive measures:
In addition to taking the same preventive measures as those for preventing the bending and breaking of the rotary tiller knives, the following should also be done:
(1)The combined soil preparation machine must be lifted when turning.
(2)The stubble cutting knives should not penetrate the soil too deeply, with 5 to 6 cm being appropriate. The main function of the stubble cutting knives on the combined soil preparation machine is to break up the stubble, which is different from that of ordinary stubble cutters.
The rotary tiller knife seat is damaged. Main reasons:
The rotary tiller knife is subjected to excessive force when encountering stones.
The knife seat is not welded firmly. The material of the knife seat itself is poor.
Preventive measures:
Pay attention to the position of the knife seat during welding.
The arrangement of the knife seats follows a certain pattern. Check the welding quality after welding.
It must be welded solid to prevent false welding. Purchase knife seats made of good materials.
Bearing damage. It is mostly the bearings of the side gearboxes (generally 204 or 205 bearings) that are damaged.
Such damage will cause fatal damage to the cross drive shaft, gears, gearbox and power output shaft system.
Main causes: Insufficient gear oil in the gearbox, causing the bearings to be damaged due to lack of lubricating oil.
Poor quality of the bearings. Preventive measures:
Regularly check the gear oil levels in both gearboxes, prevent all kinds of oil leakage, and replace damaged oil seals and paper gaskets in time.
Timely add grease and when replacing bearings, choose high-quality ones. After using the combined harrow for a period of time, adjust the clearances of all tapered bearings as required by the manual in a timely manner.
Gear damage. Main causes:
The damage of spur gears is mostly caused by the remnants of bearings entering the gear spokes, resulting in broken teeth.
A few cases are due to poor quality of the gears themselves.
The damage of bevel gears is mostly due to improper adjustment of the clearance, leading to early wear.
Preventive measures:
After the combined harrow has been working for a period of time, the clearance of the bevel gears should be adjusted strictly in accordance with the requirements of the manual. Regularly check the oil level in the gear box to prevent bearing damage. When replacing gears, high-quality products should be selected.
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