The power part of the belt conveyor is composed of a Y series squirrel cage motor, a fluid coupling (or a plum blossom elastic coupling), a reducer, a ZL elastic column pin-tooth coupling, a brake (backstop), etc., which are installed on the drive frame.
(1) The motor power of this series is 2.2~315kw, and the reducer preferentially adopts DBY type and DCY type hard tooth surface conical cylindrical gear reducer, with a transmission ratio of 8~50, and a total of 221 groups of drive units and corresponding drive frames are configured. The drive device of the parallel shaft hard tooth surface cylindrical gear reducer is selected according to Appendix I of this chapter.
(2) Determine the combination number from the "drive device selection table" according to the bandwidth, belt speed, and motor power, and then determine the required drive unit in the "drive device combination table".
(3) The fluid coupling with the rear auxiliary cavity is used as the special coupling for this series of belt conveyors, and its starting torque coefficient is limited to 1.3~1.7. When selecting, the designer should select the oil filling amount according to the required power and the maximum torque at starting, according to the coupling characteristic curve of the manufacturer, and mark the oil filling amount in the general drawing.
(4) This series adopts hydraulic push rod brake shoe brake, and the corresponding specifications of the propeller should be selected according to the braking torque and heating situation. The brake actuator is operated at 100% continuity.
(5) The roller backstop provided by this series has a backstop torque of 6.9~23.3kN·m, which is installed on the output shaft of the reducer with the following specifications of DCY315, and other types of backstops such as NYD type bump backstop and non-contact backstop can be configured by the designer. When multiple mechanical backstops are used on one conveyor. If it is not possible to ensure that the load is evenly shared, each backstop must be selected according to the maximum possible reversal torque for one conveyor. At the same time, the strength of the transmission drum shaft or reducer shaft should also be checked. The backstop with multi-motor drive and large specifications should be installed on the output shaft of the reducer or the transmission roller shaft as far as possible.
(6) The elastic tooth dwelling pin coupling for the output shaft is not included in the drive unit due to the large number of supporting specifications, and the serial number should be marked in the general drawing when the whole machine is designed and selected, and the selected coupling model specifications are listed.
(7) This series of drive units is a typical configuration of a single motor, if the configuration conditions change or when multiple motor drives are adopted, the combination form of the drive unit can be adjusted by the designer.
(8) The thermal power calculation of the hard tooth surface reducer with a center distance greater than or equal to 355mm is not outdated, and the designer should take corresponding measures.
