First, the selection guide In order to select the most suitable geared motor, we need to understand the detailed technical characteristics of the machine driven by the geared motor, we must determine a use factor fB.
The selection of the geared motor should first determine the following technical parameters:
Working hours per day; number of starts and stops per hour; hourly operation cycle; reliability requirements; working machine torque T; output speed n out; load type; ambient temperature; on-site heat dissipation conditions;
The reducer is usually designed according to constant torque, infrequent start and stop, and normal temperature.
Its allowable output torque T is determined by:
T=T out X fB use coefficient
T output————Deceleration motor output torque fB————Deceleration motor use coefficient transmission ratio ii=nin/n output motor power P(kw) P=Tout*nout/9550* η output torque T Out (Nm)T out=9550* P*η/n Out: n input——input speed η——transmission efficiency of reducer When selecting geared motor, according to different working conditions, the following conditions must be met simultaneously: 1, T out ≥ T working machine 2, T = fB total * T working machine type: fB total - total usage factor, fB total = fB * fB1 * KR * KW fB - load characteristic coefficient, KR - Reliability coefficient fB1 - ambient temperature coefficient;
Second, the reducer installation considerations When installing the reducer, should pay attention to the center of the drive center alignment, the error should not be greater than the use of the coupling used compensation. Good alignment can extend the service life and achieve the desired transmission efficiency. When installing the transmission member on the output shaft, it is not allowed to strike with a hammer. Usually, the internal friction of the assembly jig and the shaft end is used to press the transmission member with bolts, otherwise the internal parts of the reducer may be damaged. It is better not to use a steel fixed coupling. Due to the improper installation of this type of coupling, unnecessary load will be caused, resulting in early damage of the bearing and even breakage of the output shaft in severe cases.
The reducer should be securely mounted on a stable level foundation or base. The oil in the drain can be removed and the cooling air circulates smoothly. The foundation is unreliable, causing vibration and noise during operation and impairing bearings and gears. When the transmission coupling has protrusions or gears and sprocket transmissions, it should be considered to install protective devices. When the output shaft is subjected to large radial loads, the reinforcement type should be selected.
According to the specified installation device, the staff can conveniently approach the oil mark, vent plug and drain plug. After the installation is in place, the accuracy of the installation position should be thoroughly checked in order, and the reliability of each fastener should be flexibly rotated after installation. The reducer is splashed and lubricated in the oil pool. Before running, the user needs to remove the screw plug of the vent hole and replace it with a vent plug. According to different installation positions, and open the oil level plug screw to check the height of the oil level line, refuel from the oil level plug until the lubricating oil overflows from the oil level plug screw hole, and then screw the oil level plug to make sure it is correct before emptying The test run shall be no less than 2 hours. The operation should be smooth, without impact, vibration, noise and oil leakage. If abnormalities are found, they should be eliminated in time.
After a certain period of time, the oil level should be checked again to prevent possible leakage of the casing. If the ambient temperature is too high or too low, the grade of the lubricating oil can be changed.
3. Inspection and maintenance of the reducer The newly-introduced reducer has been injected into the L-CKC100~L-CKC220 medium-pressure industrial gear oil in GB/T5903 at the factory. After 200~300 hours of operation, it should be first. Oil change, the quality of the oil should be checked regularly in future use, and the oil mixed with impurities or deteriorated must be replaced in time.
Under normal circumstances, for gearboxes that work continuously for a long time, replace the new oil with 5000 hours of operation or once a year. The gearbox that has been deactivated for a long time should be replaced with a new oil reducer before re-running. It should be added with the same oil as the original grade. It must not be mixed with different grades of oil. Oils with the same grade and different viscosity are allowed to be mixed.
When changing oil, wait for the reducer to cool down without burning danger, but still keep warm, because after the complete cooling, the viscosity of the oil increases and it is difficult to drain. Note: Turn off the power supply of the transmission to prevent unintentional power-on!
During work, when the oil temperature rise exceeds 80 °C or the oil pool temperature exceeds 100 °C and abnormal noise is generated, stop using it. Check the cause, remove the fault, and replace the oil before continuing operation.
The user shall have reasonable rules for the use and maintenance, and shall carefully record the operation of the reducer and the problems found during the inspection. The above provisions shall be strictly implemented.
First use for about 200 hours, the lubricant must be drained, rinsed, and then re-added to the center of the oil standard. The oil level is too high or too low may cause the operating temperature to rise.
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