DBY series conical cylindrical gear reducer
1. The purpose, performance characteristics and model marking of the reducer
Conical cylindrical gear reducer (hereinafter referred to as reducer) is used for transmission devices in which the input shaft and the output shaft are arranged in a vertical direction. Mainly used in belt conveyors and various transportation machinery, but also in the transmission mechanism of various general machinery such as coal, metallurgy, mining, chemical industry, building materials, light industry, petroleum and so on.
1.2 Performance characteristics
High carrying capacity, low noise, small size, light weight, high efficiency and long service life.
1.3 Parameter range
DBY, DBYK, and DBZ reducers each have 12 specifications. The nominal center distances are: 160, 180, 200, 224, 250, 280, 315, 355, 400, 450, 500, 560mm. Each specification has 5 transmissions. Compared with (8, 10, 11.2, 12.5, 14) two rotation directions, four assembly types, respectively, make up 240 kinds of reducers.
DCY, DCYK, and DCZ type reducers each have 15 specifications, the nominal center distance is: 160, 180, 200, 224, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710, 800mm; each Each specification has 11 transmission ratios (16, 18, 20, 22.4, 25, 28, 31.5, 35.5, 40, 45, 50), two rotation directions, four assembly types, and 660 types of speed reducers.
This series of reducers can meet the full power requirements of TD and DX belt conveyors and other transportation machinery in the working range of 0.8-6.5m/s belt speed.
The most advanced transmission of the reducer is a spiral bevel gear made by Gleason, and the second and third transmissions are involute cylindrical helical gears.
Lubrication of reducer: Under normal circumstances, the gears and bearings of the reducer are lubricated by splashing oil pool and cooled naturally. Only when the working equilibrium temperature of the reducer exceeds the specified value, or the carrying power exceeds the thermal power PG1, the oil pool with cooling pipe is used for lubrication.
1.5 Model and marking
The model of the reducer consists of the type code, the nominal center distance a (the center distance of the final stage), the nominal transmission ratio, the assembly type code, and the input shaft rotation direction code.
D-belt conveyor group code, B-two-stage transmission, C-three-stage transmission, Y-hardened gear, Z-medium hardened gear, K-output shaft is a hollow shaft.
Nominal center distance: expressed by actual numbers, the unit is mm
Transmission ratio: expressed by the nominal transmission ratio.
Assembly type: Expressed by Roman numerals I, II, III, IV.
The direction of rotation of the input shaft: When looking at the direction of the input shaft, S is clockwise and N is counterclockwise.
The nominal center distance is 280mm, the nominal transmission ratio is 31.5, the assembly type is the third type, and the input shaft is clockwise rotating. The mark of the three-stage transmission reducer is: reducer DCY280-31.5-III S ZBJ19026
External cycloid electric drum
The power transmission part of the belt conveyor. The surface of the transmission roller has bare steel surface, herringbone and diamond pattern rubber coating. The bare steel surface can be used for low power, small bandwidth and dry environment. The chevron pattern rubber surface has a large friction coefficient, good slip resistance and drainage, but it has directionality. Diamond rubber surface is used for two-way conveyors.
*** Selection of the diameter D of the small window hole drum:
where d—— core layer thickness or steel rope diameter, mm
C——The coefficient is 80 for cotton fabric, 90 for nylon, 108 for polyester, and 145 for steel rope core.