In order to do a good job in the maintenance of agricultural machinery in the "three autumn" and ensure the smooth progress of agricultural mechanization production in the "three autumn", the following technical guidelines for the maintenance of agricultural machinery in the "three autumn" are put forward for reference by various localities.

1. corn ear harvester

Maintenance before (I) operation

1. Check the engine. Clean the air filter and air duct; replace the oil filter element and diesel filter element and replace the oil pan oil, hydraulic oil, and brake fluid; fill the fuel tank with qualified diesel; check the cooling system and add coolant; check the battery power and charge; Shake the engine crankshaft for 10 revolutions, start idling for 10-15 minutes after there is no abnormality, and observe whether there is any abnormality.

2. Check the picking table. Check whether the grass cutting knife is in good condition, whether the blade is firm, whether the gap between the picking roller and the grass cutting knife is reasonable, and adjust the fastening as needed.

3. Check the peeling mechanism. Check the gap between the peeling roller, the gap between the peeling roller and the star wheel pressure feeder in turn, and adjust the threshing gap according to the operation requirements.

4. Check the rotating parts. Check whether the rotation is flexible. Each sprocket or adhesive tape of the same rotation circuit should be in the same rotation plane. Check the tension of the chain and adhesive tape. If the transmission adhesive tape is fatigued and elongated or has other damages, replace it. Under normal circumstances, the radial clearance of rotating fit shall be ≤ 0.3mm, and the radial clearance of shaking fit shall be ≤ 0.2mm.

5. Check the control mechanism. Check whether the clutch, safety clutch and brake device are reliable, flexible and adjust as required.

6. Check the hydraulic system. Check the hydraulic oil pump, multi-way valve and pipeline. If the internal leakage is serious or the sealing pad is damaged, it should be removed or replaced in time; if the hydraulic oil is too dirty and has impurities, it should be replaced.

7. Check the tightness. Check the joint between the ear conveying trough of the picking table and the conveying auger, and check the sealing of the joint between the corn throwing roller of the peeling machine and the baffle of the ear box.

Maintenance during (II) operation

1. Always check the leakage of each pipeline, and repair it immediately after it is found.

2. Clean up the debris around the supercharger and engine exhaust pipe in time to eliminate fire hazards. Check the sealing condition of hydraulic pipeline frequently, and there shall be no leakage at all oil pipe joints and valve joints.

3. Attention should be paid to the inspection and adjustment of the picking device according to the number of grains on the dropped ground and the broken stems of the stems.

4. At the end of each shift, thoroughly clean up all parts of the harvester, check the tension of the transmission chain and transmission belt, carry out shift maintenance according to the instruction manual, clean up the filter element of the air filter, and add lubricating oil to all transmission chains, universal couplings, elevator slideways and other parts.

5. Prepare harvester accessories and wearing parts. According to the model, characteristics and conditions of machines and tools, prepare common accessories and wearing parts, and contact the enterprise after-sales service outlets in time, write down the contact address, telephone number and contact person.

(III) safety operation tips

1. On the premise of ensuring safety, do a good job in the repair, maintenance and use of the harvester.

2. When cleaning, cleaning, inspection and maintenance of the harvester, the engine must be turned off.

3. When the operator leaves the cab, the engine must also be stopped and the starting key must be removed.

4. When starting the engine, you must honk the horn first to confirm that everyone else is away from the harvester to a safe place before starting.

5. When two people jointly repair and maintain the harvester, it is strictly forbidden for another person to rotate the rotating parts without permission.

6. It is strictly prohibited to smoke in the field, and to prevent fire safety accidents caused by poor contact of electrical circuits, short circuit, grass debris piled up around the exhaust pipe of the engine, etc.

2. corn grain harvester

Maintenance before (I) operation

1. Check the engine. Clean the air filter and air duct; clean the oil filter element and diesel filter element and replace the oil pan, hydraulic oil, and brake fluid; fill the fuel tank with qualified diesel; clean the cooling system and add coolant; check the battery power and charge; Test run: start the idling engine for 5-10 minutes, and then test run the whole vehicle for 5-10 minutes to observe whether there is any abnormality.

2. Check the cutter. Check whether the blade is in good condition and firm, whether the gap between the cutting knife and the pressing blade is reasonable, whether the center line of the movable blade and the blade guard coincides with each other, whether the bar dividing plate is fastened and reliable, and adjust and fasten if it does not meet the operation requirements.

3. Check the harvesting, conveying, threshing and cleaning devices in turn. In the threshing part, check the bearing screen (gravure screen) and threshing tooth rod, and check and adjust the threshing gap.

4. Check the rotating parts. Check whether the rotation is flexible. Each sprocket or adhesive tape of the same rotation circuit should be in the same rotation plane. Check the tension of the chain and adhesive tape. If the transmission adhesive tape is fatigued and elongated or has other damages, replace it. Under normal circumstances, the radial clearance of rotating fit shall be ≤ 0.3mm, and the radial clearance of shaking fit shall be ≤ 0.2mm.

5. Check the bolt tightening. Check the bolt tightening of the roller, fan, header, screen box drive mechanism and other parts with high speed, heavy vibration and heavy load, as well as the sprocket, composite rubber belt wheel and bearing with high speed.

6. Check the control mechanism. Check clutch, safety clutch, brake device

Reliable, flexible and adjusted as needed.

7. Check the hydraulic system. Check the hydraulic oil pump, control valve and pipeline. If the internal leakage is serious or the sealing pad is damaged, it should be removed or replaced in time; if the hydraulic oil is dirty or has impurities, it should be replaced.

8. Check the tightness. Check the tightness of the junction between the inclined feeding chamber of the header and the transition plate of the degrain drum concave plate, the clearance inspection hole of the drum concave plate, the junction between the sealing bag on both sides of the wobble plate and the side wall, the junction between the sealing tape on both sides of the grain cleaning screen frame and the side wall, the junction between the auger shell and the bottom valve, the junction between the cover and the shell, and the grain tank.

Maintenance during (II) operation

1. Clean up the debris around the turbocharger and engine exhaust pipe in time to eliminate fire hazards. Check the sealing condition of hydraulic pipeline frequently, and there shall be no leakage at all oil pipe joints and valve joints.

2. Attention should be paid to check and adjust the picking device according to the number of grains on the dropped ground and the broken stems of the stems.

3. At the end of each shift, thoroughly clean up all parts of the harvester, check the tension of the transmission chain and transmission belt, carry out shift maintenance according to the instruction manual, clean up the air filter element, and add lubricating oil to all transmission chains, universal couplings, elevator slideways and other parts.

4. Prepare harvester accessories and wearing parts. According to the model, characteristics and conditions of machines and tools, prepare common accessories and wearing parts, and contact the enterprise after-sales service outlets in time, write down the contact address, telephone number and contact person.

(III) safety operation tips

1. To ensure the safety of the harvester under the premise of repair, maintenance, use work.

2. When cleaning, cleaning, inspection and maintenance of the harvester, the engine must be turned off.

3. When the operator leaves the cab, the engine must also be stopped and the starting key must be removed.

4. When starting the engine, you must honk the horn first to confirm that everyone else is away from the harvester to a safe place before starting.

5. When two people jointly repair and maintain the harvester, it is strictly forbidden for another person to rotate the rotating parts without permission.

6. It is strictly prohibited to smoke in the harvest field, and to prevent fire safety accidents caused by poor contact of electrical circuits, short circuit, and accumulation of grass debris around the exhaust pipe of the engine.

3. self-propelled crawler grain combine harvester

Maintenance before (I) operation

1. Check the engine. Clean the engine air filter and air duct; clean or replace the oil filter element and diesel filter element and replace the oil pan oil, hydraulic oil, and brake fluid; fill the fuel tank with qualified diesel; add coolant; check and charge the battery; shake Turn the engine crankshaft for dozens of revolutions, start idling for 10-15 minutes after there is no abnormality, and observe whether there is any abnormality.

2. Check the bolt tightening of the roller, fan, header, screen box drive mechanism and other parts with high speed, heavy vibration and heavy load, and the sprocket and bearing with high speed, and adjust as required.

3. Check whether each rotating part rotates flexibly; Adjust the tension of chain and adhesive tape.

4. Check the harvesting mechanism. Check whether the cutter blade is intact and firm, whether the gap is reasonable, whether the center line of the moving blade and the blade protector is coincident, and adjust the fastening as required; adjust the height of the reel and the sagging amount of the lifting claw according to the operation requirements.

5. Check the threshing and cleaning device. Adjust the threshing clearance and cleaning fan air volume according to the operation requirements. Check the wear of the grass cutter, vibrating screen and front bearing, louver sieve strip, etc. and replace them as necessary.

6. Check the straw handling mechanism. First, adjust the straw discharge position to ensure uniform discharge of straw when feeding the harvester. Second, check whether the cutting knife and fixed knife are worn or damaged, and replace with new blades if any. When the overlap between the cutter blade of the semi-feeding harvester and the supply knife blade is less than 9mm, the installation position of the supply knife shaft shall be adjusted. The gap between the cutter blade and the supply knife blade should be between 4.5-7mm; The gap between the straw chain pressure bar and the sprocket should be adjusted to within 2.5mm.

7. Check the technical status of clutches and brakes to see their reliability and flexibility.

8. Check the hydraulic oil pump, control valve and pipeline. If it is damaged, it should be replaced in time. If the hydraulic oil is too dirty and has impurities, it should be replaced.

9. Check the sealing of the joint between the bridge and the concave plate transition plate of the thresher roller to reduce the harvest loss and prevent the phenomenon of grain running and grain leakage.

Maintenance during (II) operation

1. The engine oil and oil filter element must be replaced every 250-300 hours of operation, and the diesel filter must be replaced every 200 hours of operation; the hydraulic system must change the oil and return filter element every 250-300 hours of operation. Be sure to shut down the engine before cleaning, overhaul, maintenance, refueling and before the operator leaves the cab.

2. Before lifting the header, opening the granary, threshing roller and other operating mechanisms for maintenance, cleaning and adjustment, please be sure to lock the safety lock to ensure that each mechanism will not fall or close on its own and cause personal injury.

3. When the header is blocked, adjust the gap between the moving and fixed blades to about 0.3-1mm; if the cutter blade or blade protector is damaged, the blade or blade protector needs to be replaced. When stacking crops on the header, the gap between the header feeding auger and the header bottom plate should be adjusted to about 6-15mm. When feeding the auger and wrapping the grass, adjust the paddle on the right side of the auger to make the gap between the gear rod and the bottom plate 6-10mm. When the reel has more seeds, the speed of the reel shall be reduced.

4. When the threshing cylinder is blocked, the belt tension can be adjusted to ensure the rotation speed of the cylinder. If the feeding amount is too large, the forward speed of the machine can be reduced or the cutting stubble can be increased. When the grains are too high, the blockage of the "dead corners" before and after the concave screen should be cleaned, the engine speed should reach 2500 r/min, and the accelerator should be stepped in place. When the impurity content rate in grain is high, the angle of fish scale screen should be adjusted to the appropriate position, the air volume adjustment plate should be adjusted, and the air intake should be appropriately increased.

(III) safety operation tips

1. Do not operate and maintain the harvester after drinking, taking medicine or under fatigue.

2. Be sure to shut down the engine and remove the key when cleaning, overhauling, refueling and when the operator leaves the cab.

3. When two people jointly overhaul the harvester, it is strictly forbidden for another person to rotate the rotating parts without permission.

4. When lifting the header, opening the granary, threshing roller and other operating mechanisms for maintenance, cleaning and adjustment, please be sure to lock the safety lock to ensure that each mechanism will not fall or close on its own and cause personal injury.

5. It is strictly prohibited to smoke in rice (wheat) fields, and to prevent fire safety accidents caused by poor contact of electrical circuits, short circuits, and accumulation of grass clippings around engine exhaust pipes.

4. Grain Dryer

Maintenance before (I) operation

1. Check the power supply or heat source. If the voltage of the power supply needs to be stable and within 5% of the rated voltage, set a secondary leakage protection device; Check whether the power cord is damaged; Whether the power supply is really grounded.

2. Check whether the grain loading and discharging mechanism and the internal drying circulation mechanism are blocked or worn and deformed. If blocked or worn, the corresponding mechanism needs to be cleaned or replaced.

3. Check the V-belt and its tightness. The belt tightness is 10-15mm (0.5kg) under the depression of the index finger as the standard. Chain and chain tightness and lubrication, remove the guard to adjust the tightness of the transmission chain, moderately add lubricating oil, then hang the guard and lock it; Check whether the ladle and belt are damaged, adjust the tension of the ladle and belt, and replace them if damaged or worn.

4. Check whether the exhaust duct and dust exhaust duct are damaged, and replace them if necessary.

5. Clean up the residue inside the machine and clean up the residue inside the dust collection chamber.

6. There should be no obstacles or inflammables around the machine, and the working path should be kept above 1.5 meters from the machine.

Maintenance during (II) operation

1. The raw grain needs to be cleaned and enter the dryer to avoid mixing shell chips, stones, straw and other debris, which is a waste of energy and easy to cause blockage. When drying several batches or changing grain, stop the machine to empty and remove residual grain and sundries. If the raw grain is too dirty, clean up each batch.

2. The grain capacity of the machine shall not be greater than the maximum rated value of the dryer, and shall not be overloaded.

3. When it is found that the seal is not tight, the sealing material should be replaced in time.

4. Always check whether the fasteners are loose, and timely check and adjust the tightness of the transmission belt.

5. Loading and unloading grain should be light, so as not to damage the parts.

(III) safety operation tips

1. The dryer should be equipped with a dry powder fire extinguisher, and the fire extinguisher should be within the validity period.

2. Don't stay too long after the grain enters the machine, it should be blown or dried immediately. The amount of grain loaded shall not be greater than the maximum rated capacity of the dryer and shall not be overloaded.

3. When the dryer is running, it is strictly forbidden for the operator to touch the operating mechanism of each part of the dryer with his hands; when the dryer is abnormal, it should be shut down for maintenance immediately, and it is not allowed to operate forcibly. When the dryer stops running, let the machine continue to supply air to cool the combustion chamber.

4. When the operator overhauls, he should work with more than two people, need to be supervised, wear safety helmet, and fasten safety belt when climbing high.

5. wheat planter

Preparation before (I) operation

1. Fastening and oiling. Before using the machine, check whether each fastening part is fastened firmly and whether each transmission part rotates flexibly. Fill butter at the universal joint cross, knife shaft bearing seat, and suppression wheel bearing seat, fill gear oil in the gear box, add it to the lower middle position of the bevel gear, and add lubricating oil to the chain drive and other rotating parts.

2. Hanging of machines and tools. Method 1: Pull out the universal joint, install the two internal splines on the tractor and the planter respectively, and install the bolt. After the rear suspension of the tractor is basically aligned with the suspension device of the implement, connect the universal joint first, then install the lower suspension and the upper suspension, and insert the lock pin. Method 2: After the rear suspension of the tractor is basically aligned with the suspension device of the implement, first install the lower suspension and the upper suspension, and then install the two internal splines of the universal joint on the tractor and the planter respectively, and insert the lock pin. During the installation process, the gear shaft of the machine can be rotated with a slight force.

3. Adjustment of fertilizer discharge device. The use of granular fertilizer, the amount of fertilizer should not be too large, otherwise it may produce the phenomenon of burning seedlings. First coarse adjustment: turn the fertilizer discharge adjustment handwheel until the seeding amount indication reaches the predetermined position. Re-fine adjustment: suspend the suppression wheel, rotate the suppression wheel, and after all the fertilizer is discharged from the fertilizer discharging device, rotate the suppression wheel at a constant speed according to the normal driving speed and direction, receive the fertilizer discharged from each row of fertilizer pipes, weigh the weight of the fertilizer discharged from each row of fertilizer pipes and the total weight of the fertilizer discharged, and calculate the average row fertilizer discharge and mu sowing rate of each row.

4. Adjustment of the seed meter. When sowing large grain crops such as wheat, first open the row of seed and seed-appropriate plate, and then adjust the amount of sowing. One is the method of adjusting the sowing quantity of the stepped gearbox, which realizes the adjustment of the sowing quantity by adjusting the gear of the gearbox. The second is the stepless gearbox seeding amount adjustment method, counterclockwise rotation handwheel seeding amount increases, clockwise rotation handwheel seeding amount decreases, the required seeding amount must be adjusted from small to large to the required position.

5. Limit of suppression wheel. The rocker arms on both sides of the suppression wheel are fixed by the limit pin of the sector plate, and the limit pin must be placed in the appropriate hole position on the sector plate during operation.

6. Adjust the left and right level of the machine. Raise the machine and make the rotary knife and the furrow opener leave the ground. Check whether the blade tip of the rotary knife, the furrow opener and the machine are in the same level. If not, adjust the rear suspension diagonal pull rod of the tractor.

7. Check the rotation clearance. Before operation, check and ensure that the rotation clearance between the rotating knife and the opener is ≥ 1cm. Ensure that the rotary cutter does not collide with the opener during operation.

Maintenance during (II) operation

1. Adjust the front and rear level of the machine. During operation, the front and back of the machine should be in the same horizontal plane. At this time, the included angle between the universal joint and the horizontal plane of the machine should be within the range of ± 10 °, otherwise the upper pull rod of the tractor should be adjusted.

2. Adjustment of sowing and fertilizing depth. The first is to change the length of the upper pull rod of the rear suspension of the tractor and the position of the limit pins on the rocker arms on both sides of the two sets of suppression wheels, which can simultaneously change the depth of sowing and fertilization, and the depth of tillage. The second is to change the installation height of the seed and fertilizer opener, and the depth of sowing and fertilization can be adjusted, but the relative position of the depth of seed and fertilizer remains unchanged.

3. Adjustment of the ballast. According to agronomic requirements, the position of the limit pin on the rocker arm on both sides of the suppression wheel is changed at the same time to realize the adjustment of the ballast pressure. The lower the limit pin moves, the greater the ballast pressure.

4. During the operation, the straw and clay entangled by the seed and fertilizer opener shall be cleaned frequently, and the fertilizer discharge pipe and seed discharge pipe shall be checked for blockage and deformation of the opener, and any faults found shall be eliminated in time.

(III) safety operation tips

1. The machine must be lifted when turning and reversing on the ground.

2. During the operation of machines and tools, it is forbidden to stand on the planter.

3. When the maintenance personnel need to enter the lower part of the lifting machine during the maintenance of the machine tool, there should be reliable hard support to avoid the failure of the hydraulic mechanism and injure the maintenance personnel.

4. When operating machines and tools, it is strictly prohibited to approach rotating parts such as power output shaft to avoid twisting danger.

6. straw crushing returning machine

Preparation before (I) operation

1. Check and tighten the connecting bolts and nuts.

2. Check the latches and cotter pins for defects, and supplement or replace them if necessary.

3. Add grease, and apply a layer of grease in the telescopic sleeve of the transmission shaft.

4. Check the sealing condition of the gearbox. The static joint should not leak oil, and the dynamic joint should not drip or leak oil. If oil leaks, replace the paper pad or oil seal.

5. Check the lubricating oil level of the gearbox and add it when it is not enough. Check whether the breathing hole on the gear box is unblocked. If there is any blockage, it should be cleared in time. Check whether the oil drain plug bolt is loose and tighten the seal.

6. Check whether the knife shaft flick (hammer claw) is defective and make it up in time. Blades shall be replaced in groups. When replacing the blade, two sets of radially adjacent blades should be replaced symmetrically, and the weight difference of each set of blades should be less than 10 grams.

7. Remove the mud and entangled objects on the flick knife, knife shaft and fixed blade.

8. Check the temperature rise of each bearing. If the temperature rise is too fast or too high, it is caused by the excessive clearance of the bearing or the lack of lubricating oil. Adjust the clearance or add lubricating oil for lubrication in time.

9. Hanging of machines and tools. Method 1: Pull out the universal joint, install the two internal splines on the tractor and the field returning machine respectively, and install the bolt. After the rear suspension of the tractor is basically aligned with the suspension device of the implement, connect the universal joint first, then install the lower suspension and the upper suspension, and insert the lock pin. Method 2: After the rear suspension of the tractor is basically aligned with the suspension device of the implement, first install the lower suspension and the upper suspension, and then install the two internal splines of the installed universal joint on the tractor and the field returning machine, and insert them. Lock pin. During the installation process, the gear shaft of the machine can be rotated with a slight force.

Maintenance during (II) operation

1. Check and adjust the belt tension at any time, clean up the cohesive soil layer on the inner wall of the casing in time, and stop for inspection immediately when abnormal sound and vibration are found.

2. Adjust stubble height. To adjust the depth limit roll, a row of adjustment holes are reserved on the left and right side plates of the frame. Different fixing positions will result in different stubble heights. Both sides should be adjusted synchronously during adjustment. Pay attention to the minimum stubble height so that the cutting edge of the flick (hammer claw) is not in the soil, otherwise it will accelerate the wear of the flick (hammer claw), reduce the crushing effect and increase the load of the tractor.

(III) safety operation tips

1. When the straw crushing and returning machine is running, it is strictly prohibited for the human body to approach the rotating part, and no one is allowed on and behind the machine to prevent casualties.

2. When turning or reversing, the straw crushing and returning machine must be upgraded and the power cut off. It is strictly prohibited to lift and release the straw.

3. If there is abnormal noise or vibration during operation, stop the vehicle immediately for inspection, and continue to work after troubleshooting.

4. When overhauling and cleaning up sundries of machines and tools, the tractor must be turned off, and the machines and tools must be grounded and stabilized to prevent injuries.

7. self-propelled boom sprayer

Maintenance before (I) operation

1. Clean the body, remove foreign matter and entanglement, clean the medicine box, medicine pump, filter screen and nozzle of the plant protection machine, clean the air filter, radiator, insect screen, oil-water separator, etc.

2. Add coolant (water); add fuel; clean or replace the fuel filter element; add or replace the engine, gearbox, rear axle box and other parts of the oil, replace the oil filter element at the same time; add Drug pump lubricating oil, clean the suction filter element of the drug pump; replace the seals, nozzles and other wearing parts.

3. Check whether the main nuts of the external and connecting parts are abnormal or loose, whether the front and rear tires are worn, adjust or replace the engine belt, gearbox drive belt, etc.; adjust the handles, tie rods, and cables; supplement the battery power.

4. Whether the starter motor, generator, horn, lights and other electrical components are normal, whether the engine has abnormal noise, whether the exhaust smoke color is normal, whether the instrument indication is normal, etc., and repair the fault in time.

5. Check whether the lifting, retracting and releasing of the spray rod are normal, whether the backwater stirring device works, whether the system pressure and the spray effect of each spray nozzle meet the operation requirements, etc.

6. Start slowly, check whether the machine is running smoothly, whether the brake and transmission are working normally, etc., and repair the fault in time.

Maintenance during (II) operation

1. When a fault occurs, it is necessary to stop the engine and shut down the liquid medicine distribution valve before checking.

2. Try to avoid sudden braking to prevent the water surge in the main medicine box from causing the machine to be unstable.

(III) safety operation tips

1. Before transportation, please check whether the functions of lights, horn, brake and emergency brake are normal, and ensure that the spray bar is in a folded state and the spray bar bracket has held the spray bar. When starting, lifting and unfolding or folding the boom, the machine shall sound a warning.

2. In the process of road transportation and operation, personnel are strictly prohibited from standing on the machine, and attention should be paid to whether the road traffic conditions can meet the size of the machine.

3. In the state of not flameout, shall not enter the bottom of the machine for inspection, maintenance, repair and other operations.

4. During operation, maintenance and operation of the spray bar, no one is allowed to stand within the swing range of the spray bar and below the spray bar. Unless necessary maintenance is carried out, personnel are not allowed to enter the medicine box. After the spraying operation, if there is any residual liquid medicine in the medicine box, it shall be treated according to the relevant environmental protection regulations and shall not be discharged at will.

5. Operators should wear protective equipment (clothes, gloves, shoes, etc.) during operation, and must not drink water, eat, smoke and other behaviors that may produce pesticide poisoning effects.

8. plant protection unmanned aircraft

(I) routine maintenance before takeoff

1. Check whether the propeller, arm, motor base, steering gear, foot frame, side beam and carbon frame are in good condition. If foreign matter is found, it should be cleaned in time. If cracks or defects are found, it should be replaced in time.

2. Test run the power motor, check whether the installation is firm, whether there is any virtual position, whether the rotation is smooth and no abnormal noise, and repair in time if any problem is found.

3. Test run the centrifugal nozzle, check whether the installation is firm, whether the rotation is smooth, whether the nozzle is complete, and repair the problem in time.

4. Check whether the RTK antenna is installed in good condition, and repair it in time if any problem is found.

5. Check whether there is any foreign matter in the medicine inlet and filter screen of the medicine cabinet, and clean up any foreign matter found in time.

6. Check whether the viewing angle image lens is clean. To prevent the lens from being scratched, it is recommended to use a glasses cloth to wipe it from left to right.

7. Check whether the surface of ground-like radar and front-mounted dynamic radar is clean, free from foreign matter and stable in installation. If any problem is found, repair it in time.

8. Check the battery socket for foreign matter. If the metal is found to be black, clean it up in time.

9. Check whether the battery buckle is damaged. When installing the battery, a "click" sound indicates that the installation is firm, otherwise timely maintenance is required.

Maintenance of (II) control system

1. Open the UAV control App and check whether the App version and device firmware need to be updated. If there is any update, please complete the update operation immediately according to the prompt (Note: Please ensure that all firmware is upgraded to the latest version before each flight).

2. Check and repair the "one-hand control binding" according to the requirements of the product specification, and confirm the binding of one-hand control equipment.

3. Repair the "communication system" according to the requirements of the product specification, and check whether the communication signal is good and the display is normal.

4. Repair the "positioning system" according to the requirements of the product manual, and check whether the base station is connected and whether it enters RTK.

5. Overhaul the "power system" according to the requirements of the product specification, confirm that the battery power can meet the current operation requirements, and the battery cell voltage is green to indicate normal.

6. Check and repair the "spraying system" according to the requirements of the product specification, and carry out manual spraying test. Make sure that the spraying system is unobstructed, the pipeline is free of rupture and leakage of medicine, the spraying plate rotates normally, and the flowing liquid is free of bubbles.

7. Check and repair the "power system" according to the requirements of the product specification, carry out idle speed test, and confirm that the motor turns normally without abnormal noise.

8. Check and repair the "perception system" according to the requirements of the product specification, and confirm that the terrain module and obstacle avoidance radar are normal.

(III) safety operation tips

1. Those who are drunk, lack of sleep, sick, pregnant women, under 18 years of age, and have not obtained the qualification certificate are not allowed to operate.

2. Operation cannot be carried out in the field with no safe landing point within 1 mu.

3. After the operation, stop the engine, turn off the power of the remote control, put the remote control in the toolbox, and take out the key.

4. When the UAV is in an emergency, the UAV should fly away from the crowd in the fastest way and land or make a forced landing as soon as possible.

5. The operator must understand the knowledge of the use of machinery and the nature of the agent, and master the measures to prevent poisoning and rescue methods.

6. The operator must wear protective equipment before operation. After operation, all body parts and protective equipment in contact with drugs must be washed with soapy water.

7. The medicine box, pipeline and interface of the UAV shall not leak, and the working pressure shall not exceed the specified value during operation. The pressure in the box shall be removed before troubleshooting and dismantling the joint and nozzle.

8. Open flame lighting is not allowed during maintenance or adding chemicals at night.

9. After the operation, the machinery should be thoroughly cleaned in an appropriate place to prevent water pollution.

9. (press) baler (as an example of a square baler).

Maintenance before (I) operation

1. Check the ground clearance of the elastic teeth and adjust it to 50mm. Kan

2. Operate the machine for 3-5 minutes before bundling, and observe whether the moving parts interfere with each other, jam and whether the connections are firm and reliable.

3. Adjust the bale density. The adjustment of bale density and weight should be flexibly controlled according to field conditions such as forage variety and moisture content. Slowly increase the bale density, making several bales to adjust the bale density until the desired density is reached. Kan

4. Adjust the bale length. A bale length control is installed at the top of the baling chamber behind the knotter. The length of the bale is adjusted by the installation position of the adjustable retaining ring. When the adjustable retaining ring moves upward, the length of the bale increases; on the contrary, the length of the bale shortens.

Maintenance in (II) operation

1. Pay attention to observe the grass and terrain changes, so that the tractor's forward speed and power output shaft speed control in a reasonable range.

2. When materials accumulate, first cut off the power of the power output shaft, turn off the engine, and manually remove the blocked materials. Kan

(III) safety operation tips

1. When overhauling and maintaining the machine, the power of the power output shaft must be cut off and the engine must be turned off.

2. When the machine is running, it is strictly forbidden for the driver to leave the seat. Kan

3. Persons without self-protection ability such as drunkenness, illness or excessive fatigue, children, etc. are strictly prohibited from operating machines and tools; Operators should refuse the above-mentioned personnel to approach machines and tools during operation and operation.

4. The power of the power output shaft must be cut off when the ground is turning and empty.

5. The machine should be equipped with fire extinguishers, and fireworks are strictly prohibited on the operation site to eliminate all fire hazards.