There are many kinds of animal husbandry machinery, mainly used harvesting machinery, silage harvesting machinery, feed processing machinery and so on. This paper mainly discusses the overhauling items, common faults and maintenance methods of the livestock-piece machinery. Maintenance items of Animal Husbandry Machinery 1. MAINTENANCE ITEMS OF LAWN MOWER: repairing or replacing blades, disassembling and assembling damaged edge protectors, adjusting cutters, welding and repairing cracked parts, changing and wearing belts, etc. . 2, Rake maintenance items: replacement of damaged missing rake teeth and Weeding Pole, welding repair have cracks. 3, the round binding machine maintenance items: replacement of lost, broken pick-up bullet teeth, cleaning lubrication adjustment knotter, sharpening knife cutting rope. 4, Silage Harvester overhauling items: fastening loose bolt of each part; replacing cutter wear blade, and adjust blade protector and blade clearance according to requirements; adjust chain rake, stirring wheel; check welding and repair feed into the flattening mechanism; Adjust and repair reel; grinding and cutting room moving blade, if necessary to replace; adjust and repair the transmission chain, belt; adjust and repair the safety clutch of each department; repair and replace Each Department of Bearings, Bushings; Self-walking green feed harvester should also overhaul the running part of the brake, clutch, engine and so on. 2, the common failure of Animal Husbandry Machinery 1, Mowing Machine Common Failure: Cutting Grass, missed mowing, gear noise, body shake, etc. . 2, Rake Common Failure: Grass Rake not clean, ball bearing wear or burn to death, etc. . 3, round Baler pick-up baler common faults: Spring Tooth pick-up blocked, grass pick-up not clean, knotter not knot, flywheel safety bolts cut off. 4, Silage Harvester Common Trouble: Cutter Cut Grass or missed cutting, reel easy to knock off the ears, Harvester unstable, mixing wheel, chain rake does not turn, poor cutting quality, cutting room moving knife damage, the whole machine shaking, safety clutch slipping, poor material throwing. 5, feed processing machinery common faults: Shell cracked screen piece broken, blocked, Hammer piece claw stuck, broken, fall off, smashing when the work is weak, do not start, no electricity. Maintenance Method 1, replacement of new parts and components, livestock machinery vulnerable parts damaged and lost, can be used spare parts and components replacement method maintenance. 2. Weld repair. To have the crack or the damage distortion spot, may use the correction, the welding repair method repair. 3. Adjust. Due to wear and vibration, the gap of livestock machinery becomes larger and longer, which can be adjusted by each department to restore the machinery to the required technical state. Reciprocating lawn mower flattening machine 1, Cutter Blade and guard blade damage. The blade damage of lawn mower is mainly caused by the deformation of hard object or blade protector during cutting operation, the adjustment of fixed blade is not consistent, the rivet of fixed blade is loose and the blade is broken. The broken and damaged blades and guard should be replaced in time, the guard and deformed bar should be corrected, and the blades should be riveted or screwed tightly. 2. The cutter connecting rod is damaged. The damage of the connecting rod of the cutter is generally caused by the cutter resistance, the damage of the damping rubber sleeve of the bearing of the cutter driving mechanism and the loosening of the fixing screw of the connecting Rod. The damaged connecting rod should be adjusted correctly, the relevant parts should be tightened, and the damaged bearing or rubber sleeve should be replaced. 3. Broken tool bar. The cutter bar is usually broken at the head. The main reason is the resistance is too large, the pendulum ring installation position is not correct or loose caused. The cutting device and swing ring shall be properly installed and adjusted. The broken cutter bar should be replaced with a spare cutter and the broken cutter bar should be repaired. Animal Husbandry Machinery 5. Rotary Mower 1. Blade wear and tear. The damage of the blade is mainly caused by the hard objects encountered in the operation, the blade is installed in pairs, if a damage, there will be unstable operation of the disc and mowing dirty phenomenon, should be replaced into a pair of blades. Both sides of the blade have cutting edge, when one edge of the blade wear, the blade on the left and right of the disc can be replaced, using the other side of the cutting edge. 2. You can't mow the lawn. During the operation, the blade disc is blocked by the grass, which causes the belt to slip. The blockage should be removed in time to adjust the belt tension. 3. Missed cuts. In the operation, the upper and lower blades are broken or two blades hit hard things indented, not thrown out, should replace the new blade or pull out the blade. Rake 1, gear wheel rotation is not working. The tooth plate of the rake is not rotating properly, one is that the rake teeth touch the ground force is too large, so that the tooth plate rotating resistance increases, easy to damage the tooth, can be adjusted to eliminate; the other is that the rolling bearing is worn excessively, should be replaced. 2. The grass is not clean. The reason is that the rake teeth are not all on the ground, the rake teeth on the ground force is too small, change the tension spring in the position of the tension adjustment plate to adjust. 3. Small Square baler main common failure in the knotter or knotter and Baler. The baler is first cleared of Hay and the long arm is triggered to turn the flywheel until the tying process is completed and the failure is carefully removed. Green Fodder Harvester 1. Drum type Green Fodder Harvester: After the harvest is picked up by the picker, it is conveyed to the feeding inlet by the horizontal agitator, and the feeding inlet contacts with the upper and lower feeding rollers, and enters between the extrusion rollers through the intermediate guide rollers, cut Up by a cutter on a roller. Through the throwing device, the green feed is conveyed to the transport vehicle. This type of Harvester is similar to a common grain combine harvester. 2. cutter-head type Forage Harvester: The cutting table, picker, feeding, conveying and extruding mechanism of this type of Harvester is the same as that of the drum type Harvester, the main difference is that when the number of cutters is reduced, it doesn't have much effect on the throw. 3, flail Type Green Fodder Harvester: This kind of machinery is also called flail type Green Fodder Harvester, when close throwing barrel, can make broken grass scatter on the ground for green manure, can also lay grass. 4, fan-type Green Feed Harvester: The main difference is that the blade with the blade instead of the blade blade with the impeller. The blade on the impeller is specially designed for shredding, and the blades generate a jet of air. Green Feed Harvester has many faults, but it mainly includes the following aspects: 1, Cutter Faults. The main performance is the unfavorable mowing or missed mowing. The main reason is that the cutter is worn or lack of blades, the blades should be replaced in time, the smaller the gap between fixed and moving blades, the better, the gap should be 0.2 ~ 0.4 mm, and the parts of the transmission mechanism of the cutter bar should be checked to ensure the normal operation. 2. Reel failure. Reel failure mainly in the transmission and adjustment, should ensure that reel transmission normal, reel adjustment is mainly height adjustment, according to the height of the crops can be controlled with the lifting cylinder; Reel Level Adjustment, the front hole can be adjusted by adjusting the holes on the board, the front hole is suitable for high culm or lodging operation; the rotation speed of the reel can be adjusted by changing the chain wheel according to the growing trend of crops or the forward speed of the machine. 3. Unstable Harvester Malfunction. The main reason for the instability of the header is the distributor or oil leakage caused by the cylinder, should replace the oil seal "o" ring to eliminate. 4, agitator wheel, chain harrow failure. The main cause of the failure here is the safety clutch slipping, sliding may be the safety clutch oil or insufficient Torque, should be cleaned and torque tightening according to provisions. 5. The shredding part breaks down. Cutting length adjustment, can be used to increase or decrease the number of cutting blades or feed speed to adjust; cutting part of the failure mainly dynamic, fixed knife damage, bearing damage. 6, the whole machine shake and throw material not free trouble. The reason of the whole machine shaking is that the bearing on both sides of the cutting drum shaft is damaged or the cutting knife is damaged. The machine should stop to check, replace the damaged or worn bearing, and check the condition of the fixed blade damage, replace the new blade in time to keep the moving knife running smoothly; The main reason is that there are obstacles in the barrel or lack of wind force, the wind plate should be replaced to remove the barbed barrel and other obstacles.