Preventive and regularly scheduled maintenance is vital to the efficiency and life of large machinery. In commercial composting sites, composting machinery and equipment are major cost items in large-scale compost production. Regular preventive maintenance of the hydraulic compost turner will prolong its service life, thus saving production costs.
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Daily/Weekly Maintenance and Periodic Inspection of Hydraulic Compost Turner
Inspections before start:
◇ check and adjust all fasteners securely and all bearing clearance of transmission parts appropriately (too loose or too tight may cause too much resistance)
◇ add butter to the bearing seats and check the oil level of the gearbox
◇ check wire connectors
Maintenance after shutdown:
◆ clean residues from frame and crawler of compost turning machine after shutdown;
◆ lubricate each lubricating point in time.
◆ cut off power.
Weekly maintenance of hydraulic compost turner machine
▽ check oil volume of reduction gearbox, fill enough gear oil.
▽ clean materials from the outlet and keep it open and clear.
▽ inspect each contact point in the cabinet, and replace damaged parts timely.
Periodic inspection items
▼ check the operation situation of the motor speed reducer, if there is abnormal sound, heat, and other conditions, it should be immediately shut down for inspection.
▼ check all bearings and replace highly worn parts.
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The hydraulic lifting system and caterpillar track are the first 2 most important parts of a full hydraulic compost turner. How to maintain them relates to the life and working efficiency of the whole machine.
Hydraulic System Maintenance
In order to ensure hydraulic equipment can meet the high production capacity, and stable and reliable technological performance, requirements for the hydraulic system must be skilled operation, reasonable adjustment, careful maintenance, and planned maintenance. Requirements are as follows:
● Reasonable adjust working press and speed of hydraulic system according to requirements of introduction and working requirement. when the pressure value and the speed control value are at the desired value, it should adjust the screw fixation to prevent loosening.
● select suitable hydraulic oil according to instructions and provisions of the brand; change unqualified oil immediately once found.; filter oil before refueling; At the same time, remember regularly check the oil to ensure the best oil quality.
● The working temperature of oil needs to be below 80 degrees, with general control in the range of 35-70 degrees. Check for the reason when the temperature is more than the specified range.
● Ensure stable voltage; keep fluctuation value not exceed the rated voltage of +5%-15%.
● Forbid working and adjusting press under the situation of defective pressure gauge or no-press gauge.
● Close electrical cabinets, electrical box, operating platform and command control box lid when not used.
● When a part of a hydraulic system fails (such as hydraulic instability, low oil press and vibration), it is necessary to analyze all causes and repair in time where forced running may cause major accidents.
● Periodic check cooler and heater.
● Regularly observe the working performance of the accumulator, if the air pressure is insufficient or oil or gas is mixed, it should timely inflate and repair it.
● Regularly replace seal parts every one and a half years.
● Regularly measure and replace the performance of the main components.
Requirements for operation and maintenance of the hydraulic system
The operation and maintenance of hydraulic equipment should meet general requirements, as well as its special requirements, the contents are as follows :
○ The operators must be very familiar with the role of the main hydraulic components and the principle of the hydraulic system, as well as the operation sequence.
○ As for the hydraulic system, operators must carefully observe its working pressure and speed and check the oil cylinder or oil motor so as to ensure it’s stable and reliable working.
○ Before starting the hydraulic pump motor, it is necessary to check whether all main electromagnetic valves are in their original state, and check the oil level. Don’t start it under the situation of insufficient oil and abnormal parts.
○ In winter, remember to start the hydraulic pump motor when the oil temperature is below 20 degrees. In summer, when the oil temperature is higher than 70 degrees, operators must pay more attention to the working condition of the hydraulic system, and notify the maintenance personnel for processing.
○ Operators should first start the hydraulic pump motor to take the pressure into working when the compost turner machine has been shut down for more than 4 hours. If it is like that, before starting work, it should start the hydraulic pump motor for 5-10 minutes(pump for oil transfer), and then take the press.
○ Don’t push the electronic control valve by hand; don’t damage or move the position of each limit switch arbitrarily.
○ When a hydraulic system is in trouble, operators should ask for the help of the maintenance department who should analyze the causes according to the introduction.
○ Keep clean, and prevent dust, cotton yarn, and other debris into the fuel tank.
Correct Use and Maintenance of Track
Tracks are very important components for a walking system of the hydraulic compost turner machine. According to theory data, a new track can be used for 2-3 years, while unreasonable maintenance will shorten its service life. The correct methods for use and maintenance of crawler belts are as follows：
▲ Use and maintenance for new tracks. Turn track pin end approximately by pipe wrench to avoid crankshaft shape of the track ahead.
▲ Correctly adjust sag tracks. Normal track sag should be 30 ~ 50mm, not too tight not too loose, and two crawler belts should be the same. Generally keep track sag at about 30mm when the compost turner machine work on flat, hard ground.
▲ Try to walk as balanced as possible to minimize unilateral wear When crawler compost turner works for organic manure fermentation.
▲ Remember to change the rotation angle of the track pin at 60℃ after a whole working time of 10000 hours because sediments and other wastes in track holes during turning and lifting will cause heavy wear and high crankshaft.
▲ During use, regularly inspect wear condition and crawler belt sag. Don’t adjustable turn or turn fast as for crawler compost turner machine with a high sag or wear. Don’t work in the rugged ground for a long time which may cause track derailment.
▲ Exchange two tracks each other when drive wheel or crawler meshing parts heavily wear; exchange driving wheels to prolong the track service life.
▲ Timely inspect all cracks on walking equipment, and timely repair or strengthen them.
▲ Importance of lubrication! Lubrication for the walking system is very important, as a lot of “burned” roller bearings are caused by much leakage. Generally speaking, there are five parts as follows which are very easy to leak, it should pay more attention to.
△ Leak from the part between outer retaining ring and shaft because of the damaged or bad round ring between the ring and the shaft.
△ Leakage may be from the contact blocks between the outer ring and supporting wheel because of bad contact of floating seal rings or defect round shape rings.
△ Oil may be leaked between bush and roller because of poor connection between supporting wheel and bush.
△ Perhaps leak from gas plug beside because of loose plug-in oil filer or damaged sealed plug hole.
△ Leakage in the part between cover and roller because of poor contact of round shape ring.
Therefore, it should be paid more attention to those sites, and regularly lubricate or replace relative parts.
