Structure and assembly of corn combine harvester
The knapsack corn combine harvester consists of headers, elevators, ear bins, transmissions, straw returning machines or straw recycling machines.
The corn combine harvester is a kind of seasonal agricultural implement, which needs to be assembled, debugged before harvesting, and removed and sealed after harvest. For the vast majority of farmers' friends, it is more complicated. Now we will introduce it to everyone.
Corn Harvester Assembly and Mounting
First, mount the left and right mounting brackets of the header and the front yoke on both sides of the engine. It is required that the mounting holes of the left and right mounting brackets are basically symmetrical and the inner sides of the hanging points on the two mounting brackets are 705 to 710 mm apart. When installing the granary bracket at the rear of the tractor, one person needs to pick up the cradle and one person installs the screws. After the bracket is installed. Install the granary undercarriage on the bracket. When installing the undercarriage, it is required that the left and right sides should be straight and not tilted. If you do not meet the requirements to adjust in time. Install the cylinder support on the bracket, install the inclined beam on the bracket, install the elevator bracket on the upper end of the inclined beam, and fix with the U-bolt.
Carefully inspect the fasteners of various parts and find that they need to be tightened in time when loose. In the normal circumstances of the next step in the installation.
Header installation
Before attaching the header, you need to attach the cylinder to the tubing and install it on the front beam. Then lift the header and slowly push the tractor so that the header arm is inserted into the header on the left and right mounting brackets on the tractor. In the hanging hole, insert the bolt in the upper hole and tighten it. Connect the header to the cylinder. After installation, pour oil into each lubrication point of the header to lubricate.
Install the store
Use a forklift to lift the bin from the bin, place it on the already installed granary underframe, place it on the cylinder support and connect it to the bin.
Installing the elevator
Lift the lifter onto the lifter bracket. Take care that the front end of the lifter fits into the fork of the header and bolts, and the rear section of the lifter bracket should be inserted into the hole of the hanging groove. Secure with bolts to prevent shedding. Continue to install the outlet and align the elevator end section transmission components.
Install the drive system
Attach the splined sprocket to the tractor's rear power output shaft and install the tensioner next to the output shaft. The rear driveshaft sprockets and the power output shaft sprockets are connected by a chain. You can adjust the height of the tensioner to adjust the tension of the sprocket. Use a long universal joint to connect the front drive shaft to the power input shaft of the header transmission. Finally, connect the header drive shaft with the elevator drive shaft with a chain
Install straw returning machine or straw recycling machine
The process and method for installing the straw recycling machine and installing the straw returning machine are the same. Now we will introduce the straw returning machine as an example to introduce the installation process.
Before installing the returning machine, it is necessary to measure the dynamic balance of the infield motor knife, which is conducive to the work of returning the field. When installing, the universal joint with the shaft in the universal joint is mounted on the power output shaft. Then, the universal joint with the sleeve in the universal drive is installed on the input shaft of the returning machine gear box. The tractor slowly backs up and inserts the shaft into the sleeve.
Finally, the left and right suspension axles of the returning machine are respectively inserted into the holes of the tractor's right and left longitudinal drawbars. The tractor's center puller is connected with the returning machine and locked with bolts and split pins. After returning the field machine, it should be noted that the driven fork of the universal joint must be in the same plane as the active fork of the other universal joint. Also ensure that the knife is 50 to 100 mm away from the ground and do not allow the blade to come into contact with the ground.
Install the hydraulic system
The rear cylinder of the main engine is connected to the hydraulic distributor by an oil pipe, and then the hydraulic system pipe fittings on the granary lifting cylinder and the header oil cylinder are mounted on the hydraulic distributor and fixed. Finally, the front cover plate, filter, and other components were installed so that a knapsack corn combine was installed.
Test run
Before the trial run, the oil level of the header and returning gearbox should be checked and should not be less than 30mm.
Then use the tool clockwise to turn the drive of the whole machine, there should be no blocking phenomenon. When starting the tractor, the power shaft should be slowly engaged at low speed. Operate hydraulic handles, lift headers, returning machines, and reverse bins.
After 30 minutes of operation with the small and medium throttle, stop and check the connection and fastening of each component.
Carefully inspect the bearing and gear box for heat generation at various locations. The temperature should not exceed 25 degrees. Traveling from slow 1 to slow 4 requires continuous operation for 1 to 2 hours and parking checks. If there is no abnormality, it can be harvested.
Use and Adjustment of Corn Harvester
Prior to the commencement of operations of the corn combine harvester, it is necessary to know in advance the size and shape of the plots and whether there are natural factors affecting the operation such as poles and ditches in the fields in order to determine the route of operation. We also need to understand the variety of crops, row spacing, plant height, and lodging, which affect the yield, in order to determine the speed of the harvester.
The speed of the machine depends on the level of the crop, the crop output, and the degree of density of the crop. It determines the speed of the machine. Under normal circumstances, it should be quick. If it is faster, it is not easy to lose the crop, and the efficiency is higher. . To this corn more than 2 meters (high), (machine speed) can be slow 3 slow 4.
In field operations, when starting the tractor, the height of the header needs to be adjusted according to the height of the corn. When the field machine or the recycling machine is in operation, it is necessary to slowly put down the field returning machine or the recycling machine, pay attention to the moving knife not touching the soil, and the throttle from small to large. Gradually reach the rated speed. Slowly enter the work area at a low speed and start the harvest operation.
When passing through a field or land, you should raise the returning machine or the recycling machine and the header, and avoid sharp turns. There are safety rules that should be followed when driving a corn combine to avoid unnecessary injury: Safety rules: Non-drivers are not allowed to drive the combine.
When the harvester is operating or starting, it must send a signal.
During the operation of the machine, it is not allowed to touch the working parts. If maintenance is required, it must be stopped before proceeding. When adjusting the lower part of the header, the header must be lifted and the power cut off. Each machine should be equipped with a fire extinguisher.
After stopping work, the shift lever should be placed in the neutral position and the clutch that drives the working mechanism should be cut off.
Fault adjustment during corn harvester operations
When the load on the harvester is found to be too heavy, the throttle must not be reduced. The clutch can only be depressed to stop the vehicle from moving forward. The harvester operation should be properly stopped for 1 to 2 minutes. After the working parts are stabilized, the appropriate working speed is selected.
Adjust the dialing chain
The function of the reel chain is to pull the corn stem back and remove the ear. When the work components are clogged, they should be shut down in time to cut off the power, clear the blockages, avoid increased wear, and speed up the damage to components.
Check the reel chain. If the passive sprocket deflection is found and the chain is not normally worn or damaged, adjust the tension of the reel chain to adjust the tension. If you preload the adjustment nut, the rake chain will tighten. If you unscrew the adjusting nut, then the chain is loosened.
Adjusting the picking roller
After working for a period of time, it is necessary to check and adjust the working gap of the picking roller according to the number of seeds dropped on the ground and the broken bar of the stem. When it is found that the loss of grains is large or there are many broken bars, the gap between the two picking rollers must be adjusted according to the corn varieties, the size of the ear, the thickness of the stem, and the like.
When the tensioner is tightened clockwise, the gap increases, and when counterclockwise, the gap decreases. In general, when the stems are thick, the plant density is high, and the moisture content of the crop is high, the gap should be increased appropriately, and vice versa. If the gap is too large, the loss of particles will increase. The gap is too small and the stem is severe.
When harvested by the corn combine harvester, the weight of the dropped grain in an area of ​​1m2 is compared with the total grain weight in the measuring area, and when it is not more than 1%, it indicates that the picking roller has reached the best use state.
Adjust elevator
The lifter is a scraper type, with the drive sprocket at the front and the driven sprocket at the rear. Scraper should move freely in the elevator tank. If the movement resistance is too large or too small, rotate the screw, adjust the position of the rear driven sprocket shaft, and adjust the tension of the scraper conveyor chain to adjust the scraper's movement resistance.
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