Systems Operation 784C, 785C and 785C HAA Off-Highway Truck/Tractors Power Train, страница 3

Coupling ring gear (27) turns with rotating housing (2) and input shaft (1). Coupling ring gear (27) is splined to planetary carrier (29). Planetary carrier (29) turns with coupling ring gear (27). The planetary carrier is splined to center shaft (7). Center shaft (7) is driven in the same direction and at the same speed as input shaft (1) .

Sun gear (15) is splined to center shaft (7). Sun gear (15) turns planetary gears (23). No. 5 clutch (14) is engaged. The discs of No. 5 clutch (14) hold ring gear (13) stationary. Planetary gears (23) move around the inside of ring gear (13). This drives the planetary carrier and output shaft (20) .

The output shaft turns in the same direction as input shaft (1), but at a different speed.

Power Flow in THIRD Speed

No. 1 clutch (5) and No. 4 clutch (12) are engaged in THIRD speed. Torque is transferred from the transfer gears to input shaft (1). Rotating housing (2) is splined to input shaft (1). Rotating housing (2) turns with input shaft (1). Rotating housing (2) spins the plates of No. 1 clutch (5). Because No. 1 clutch (5) is engaged, the discs of the No. 1 clutch hold ring gear (28) .

Ring gear (28) turns with rotating housing (2) and input shaft (1). Sun gear (3) is splined to a stationary shaft. Sun gear (3) does not turn. Planetary gears (4) move around the outside of sun gear (3). This drives planetary carrier (29). Planetary carrier (29) turns in the same direction as input shaft (1), but at a different speed. Planetary carrier (29) is splined to center shaft (7). Center shaft (7) and planetary carrier (29) are driven in the same direction and at the same speed.

Sun gear (10) is splined to center shaft (7). Sun gear (10) turns planetary gears (24). No. 4 clutch (12) is engaged. The discs of No. 4 clutch (12) hold ring gear (11) stationary. Planetary gears (24) move around the inside of ring gear (11). This drives planetary carrier (25) in the same direction as center shaft (7), but at a different speed.

Planetary carrier (25) is splined to ring gear (13). Because No. 5 clutch (14) is not engaged, ring gear (13) turns with planetary carrier (25). Sun gear (15) is splined to center shaft (7). Sun gear (15) turns with center shaft (7). Sun gear (15) and ring gear (13) turn in the same direction but at different speeds. Planetary gears (23) move around the inside of ring gear (13). This drives the planetary carrier and output shaft (20) .

The output shaft turns in the same direction as input shaft (1), but at a different speed.

Power Flow in FOURTH Speed

No. 2 clutch (6) and No. 4 clutch (12) are engaged in FOURTH speed. Torque is transferred from the transfer gears to input shaft (1). Rotating housing (2) is splined to input shaft (1). Rotating housing (2) turns with input shaft (1). Rotating housing (2) spins the plates of No. 2 clutch (6). Because No. 2 clutch (6) is engaged, the discs of the No. 2 clutch hold coupling ring gear (27) .