The Final Drive on CIPI Undercarriage Arrangements which are Based on 330 Track Type Excavators
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| Illustration 1 | g01034173 |
Final Drive (1) Bolt (2) Roller bearing (second stage) (3) Planetary gear (third stage) (4) Roller bearing (third stage) (5) Planetary shaft (third stage) (6) Gear coupling (7) Bolt (8) Ball bearing (9) Motor housing (10) Travel motor (11) Planetary gear (second stage) (12) Planetary shaft (second stage) (13) Planetary shaft (first stage) (14) Roller bearing (first stage) (15) Planetary gear (first stage) (16) Sun gear (first stage) (17) Cover (18) Ring gear (first stage) (19) Carrier (first stage) (20) Sun gear (second stage) (21) Carrier (second stage) (22) Ring gear (23) Sun gear (third stage) (24) Carrier (26) Pin (27) Output shaft (travel motor) (28) Sprocket housing | |
The travel drive reduces the rotating speed of travel motor (10). Output shaft (27) is splined to first stage sun gear (16) of the travel drive. The travel drive consists of the following two groups:
- The first group is the planetary gear reduction group. Three stages constitute the planetary gear reduction group. Sun gear (16), planetary gears (15),carrier (19), and ring gears (18) constitutes the first stage. Sun gear (20), planetary gears (11), carrier (21) and ring gear (22) constitutes the second stage. Sun gear (23), planetary gears (3), carrier (24), and ring gear (22) constitutes the third stage.
- The second group is the output group. Rotation of sprocket housing (28) provides the output torque that is necessary to drive the track. Housing (28), ring gears (22), and cover (17) are held together with bolts (1). This integrated unit, which is supported by ball bearings (8), turns in unison as second stage ring gear (22) turns.
The planetary reduction group serves to reduce travel speed by the ratio of gear teeth between the sun gear and the ring gear. The compact travel drive provides a greater reduction ratio when the sun gear is incorporated into the ring gear housing.
Planetary Gear Operation
Rotation of travel motor output shaft (27) is transmitted to first stage sun gear (16). Sun gear (16) is splined to output shaft (27). When sun gear (16) is viewed from the motor side, the description below details the operation of the travel drive assembly as sun gear (16) rotates clockwise.
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| Illustration 2 | g00587331 |
First Stage Reduction Group (13) Planetary shaft (first stage) (14) Roller bearing (first stage) (15) Planetary gear (first stage) (16) Sun gear (first stage) (18) Ring gear (first stage) (19) Carrier (first stage) (29) Rotating direction of first stage reduction group | |
In the first stage reduction group, planetary gears (15) are meshed with sun gear (16). Planetary gears (15) rotate counterclockwise as sun gear (16) rotates clockwise. Planetary gears (15) are also meshed with ring gear (18). Planetary gears (15) walk around the teeth of ring gear (18). As planetary gears (15) rotate, the planetary gears circle around sun gear (16) clockwise. Planetary gears (15) are mounted to carrier (19) by planetary shafts (13) and roller bearings (14). The assembly of carrier (19) rotates clockwise.
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| Illustration 3 | g00587347 |
Splines In Engagement (13) Planetary shaft (first stage) (15) Planetary gear (first stage) (19) Carrier (first stage) (20) Sun gear (second stage) (30) Splines in engagement | |
Rotation of carrier (19) is transmitted to sun gear (20) of the second stage reduction group. The second stage reduction group is splined to carrier (19). Sun gear (20) rotates clockwise. Clockwise rotation of sun gear (20) rotates planetary gears (11) counterclockwise. Planetary gears (11) are meshed with sun gear (20) .
Since planetary gears (11) are also meshed with ring gear (22), the planetary gears walk around the teeth of ring gear (22). As planetary gears (11) rotate, the planetary gears circle around sun gear (20) clockwise. Planetary gears (11) are mounted to carrier (21) by planetary shafts (12) and roller bearings (2). The assembly of carrier (21) rotates clockwise.
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| Illustration 4 | g00587363 |
Splines In Engagement (21) Carrier (second stage) (23) Sun gear (third stage) (31) Splines in engagement | |
Rotation of second stage carrier (21) is transmitted to third stage sun gear (23), which is splined to carrier (21) .
Splines on third stage carrier (24) engage with teeth on the outer circumference of motor housing (9) through gear coupling (6). When the housing is held to the track frame, carrier (24) cannot rotate. The first stage and second stage planetary gears turn around the first stage and second stage planetary gear's own sun gears. In contrast, each planetary gear (3) will rotate on the planetary gear's individual axis from the planetary gear's original mounted position. This causes ring gear (22) to rotate counterclockwise.
Ring gear (22) and sprocket housing (28) are held together with bolts (1). The sprocket wheel is bolted to the housing. The torque of sun gear (23) is transmitted to the housing. This causes the sprocket to rotate counterclockwise. The right track rotates in the forward direction.
The Final Drive on CIPI Undercarriage Arrangements which are Based on 330B Track Type Excavators
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| Illustration 5 | g00587161 |
Final Drive (1) Bolt (2) Roller bearing (second stage) (3) Planetary gear (third stage) (4) Roller bearing (third stage) (5) Planetary shaft (third stage) (6) Gear coupling (7) Bolt (8) Ball bearing (9) Motor housing (10) Travel motor (11) Planetary gear (second stage) (12) Planetary shaft (second stage) (13) Planetary shaft (first stage) (14) Roller bearing (first stage) (15) Planetary gear (first stage) (16) Sun gear (first stage) (17) Cover (18) Ring gear (first stage) (19) Carrier (first stage) (20) Sun gear (second stage) (21) Carrier (second stage) (22) Ring gear (23) Sun gear (third stage) (24) Carrier (26) Pin (27) Output shaft (travel motor) (28) Sprocket housing | |
The travel drive reduces the rotating speed of travel motor (10). Output shaft (27) is splined to first stage sun gear (16) of the travel drive. The travel drive consists of the following two groups:
- The first group is the planetary gear reduction group. Three stages constitute the planetary gear reduction group. Sun gear (16), planetary gears (15),carrier (19), and ring gears (18) constitutes the first stage. Sun gear (20), planetary gears (11), carrier (21) and ring gear (22) constitutes the second stage. Sun gear (23), planetary gears (3), carrier (24), and ring gear (22) constitutes the third stage.
- The second group is the output group. Rotation of sprocket housing (28) provides the output torque that is necessary to drive the track. Housing (28), ring gears (22), and cover (17) are held together with bolts (1). This integrated unit, which is supported by ball bearings (8), turns in unison as second stage ring gear (22) turns.
The planetary reduction group serves to reduce travel speed by the ratio of gear teeth between the sun gear and the ring gear. The compact travel drive provides a greater reduction ratio when the sun gear is incorporated into the ring gear housing.
Planetary Gear Operation
Rotation of travel motor output shaft (27) is transmitted to first stage sun gear (16). Sun gear (16) is splined to output shaft (27). When sun gear (16) is viewed from the motor side, the description below details the operation of the travel drive assembly as sun gear (16) rotates clockwise.
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| Illustration 6 | g00587331 |
First Stage Reduction Group (13) Planetary shaft (first stage) (14) Roller bearing (first stage) (15) Planetary gear (first stage) (16) Sun gear (first stage) (18) Ring gear (first stage) (19) Carrier (first stage) (29) Rotating direction of first stage reduction group | |
In the first stage reduction group, planetary gears (15) are meshed with sun gear (16). Planetary gears (15) rotate counterclockwise as sun gear (16) rotates clockwise. Planetary gears (15) are also meshed with ring gear (18). Planetary gears (15) walk around the teeth of ring gear (18). As planetary gears (15) rotate, the planetary gears circle around sun gear (16) clockwise. Planetary gears (15) are mounted to carrier (19) by planetary shafts (13) and roller bearings (14). The assembly of carrier (19) rotates clockwise.
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| Illustration 7 | g00587347 |
Splines In Engagement (13) Planetary shaft (first stage) (15) Planetary gear (first stage) (19) Carrier (first stage) (20) Sun gear (second stage) (30) Splines in engagement | |
Rotation of carrier (19) is transmitted to sun gear (20) of the second stage reduction group. The second stage reduction group is splined to carrier (19). Sun gear (20) rotates clockwise. Clockwise rotation of sun gear (20) rotates planetary gears (11) counterclockwise. Planetary gears (11) are meshed with sun gear (20) .
Since planetary gears (11) are also meshed with ring gear (22), the planetary gears walk around the teeth of ring gear (22). As planetary gears (11) rotate, the planetary gears circle around sun gear (20) clockwise. Planetary gears (11) are mounted to carrier (21) by planetary shafts (12) and roller bearings (2). The assembly of carrier (21) rotates clockwise.
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| Illustration 8 | g00587363 |
Splines In Engagement (21) Carrier (second stage) (23) Sun gear (third stage) (31) Splines in engagement | |
Rotation of second stage carrier (21) is transmitted to third stage sun gear (23), which is splined to carrier (21) .
Splines on third stage carrier (24) engage with teeth on the outer circumference of motor housing (9) through gear coupling (6). When the housing is held to the track frame, carrier (24) cannot rotate. The first stage and second stage planetary gears turn around the first stage and second stage planetary gear's own sun gears. In contrast, each planetary gear (3) will rotate on the planetary gear's individual axis from the planetary gear's original mounted position. This causes ring gear (22) to rotate counterclockwise.
Ring gear (22) and sprocket housing (28) are held together with bolts (1). The sprocket wheel is bolted to the housing. The torque of sun gear (23) is transmitted to the housing. This causes the sprocket to rotate counterclockwise. The right track rotates in the forward direction.
The Final Drive on CIPI Undercarriage Arrangements which are Based on 330C Track Type Excavators
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| Illustration 9 | g00847597 |
Final Drive (1) Roller bearing (2) Planetary shaft (second stage) (3) Bolt (4) Planetary gear (second stage) (5) Roller bearing (6) Planetary gear (third stage) (7) Roller bearing (8) Planetary shaft (third stage) (9) Drive sprocket housing (10) Motor housing (11) Travel motor (12) Planetary gear (first stage) (13) Planetary shaft (first stage) (14) Cover (15) Sun gear (first stage) (16) Planetary carrier (first stage) (17) Ring gear (first stage) (18) Planetary carrier (second stage) (19) Sun gear (second stage) (20) Ring gear (second stage and third stage) (21) Planetary carrier (third stage) (22) Sun gear (third stage) (23) Output shaft (travel motor) (26) Roller bearing | |
The final drive reduces the rotational speed of travel motor (11). Output shaft (23) of travel motor (11) is splined to sun gear (first stage) (15) .
The final drive consists of two groups. The first group consists of the three stages of the planetary gear reduction. The second group is the output group.
- The first stage reduction group consists of the following components: sun gear (15), planetary gear (12), planetary carrier (16) and ring gear (17). The group for second stage reduction consists of the following components: sun gear (19), planetary gear (4), planetary carrier (18) and ring gear (20). The third stage reduction group consists of the following components: sun gear (22), planetary gear (6), planetary carrier (21) and ring gear (20) .
- The output group is described in the following manner. The rotation of drive sprocket housing (9) drives the track. Drive sprocket housing (9), ring gear (20) and cover (14) are connected by bolts (3). The drive sprocket housing, the ring gear and the cover are supported by roller bearing (26). This planetary assembly rotates with ring gear (20) .
The planetary gears reduce the travel speed. The travel speed is reduced by the ratio of teeth of the sun gear and the ring gear. The compact final drive offers a greater reduction ratio when the sun gear is incorporated inside the ring gear.
Operation
Sun gear (15) is splined to the output shaft of travel motor (23). The rotation of the output shaft is transmitted to the sun gear. When sun gear rotates clockwise, the final drive operates in the following manner.
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| Illustration 10 | g00581161 |
First stage reduction group (1) Roller bearing (first stage) (12) Planetary gear (first stage) (13) Planetary shaft (first stage) (15) Sun gear (first stage) (16) Planetary carrier (first stage) (17) Ring gear (first stage) (27) Rotational direction (first stage reduction group) | |
In the first stage reduction group, sun gear (15) causes planetary gears (12) to rotate counterclockwise. Planetary gears (12) mesh with sun gear (15) and ring gear (17). Planetary gears (12) rotate around sun gear (15) and the internal teeth of ring gear (17). Each planetary gear (12) is mounted to planetary carrier (16) by shafts (13) and by roller bearings (1) in order to form a planetary assembly. Planetary carrier (16) rotates in a clockwise direction (27).
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| Illustration 11 | g00581164 |
Engagement of splines (12) Planetary gear (first stage) (13) Planetary shaft (first stage) (16) Planetary carrier (first stage) (19) Sun gear (second stage) (28) Engagement of splines | |
The spline of planetary carrier (first stage) (16) meshes with sun gear (second stage) (19). The rotation of planetary carrier (16) is transmitted to sun gear (19). Sun gear (19) rotates clockwise.
In the group for second stage reduction, sun gear (19) causes planetary gears (4) to rotate counterclockwise. Planetary gears (4) mesh with sun gear (19) and ring gear (20). Planetary gears (4) rotate around sun gear (9) and the internal teeth of ring gear (20). Each planetary gear (4) is mounted to planetary carrier (18) by shafts (2) and by roller bearings (5) in order to form a planetary assembly. Planetary carrier (18) rotates clockwise.
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| Illustration 12 | g00581172 |
Engagement of splines (18) Planetary carrier (second stage) (22) Sun gear (third stage) (27) Engagement of splines | |
The spline of planetary carrier (second stage) (18) meshes with sun gear (third stage) (22). The rotation of planetary carrier (18) is transmitted to sun gear (22). Sun gear (22) rotates clockwise.
In the third stage reduction group, the spline teeth of planetary carrier (21) mesh with teeth on the outer circumference of motor housing (10). Since motor housing (10) is fixed to the track frame, planetary carrier (21) does not rotate.
Planetary shaft (8) is stationary. The planetary gear (third stage) (6) rotates around planetary shaft (8). Since planetary carrier (21 ) is attached to the track frame and the planetary carrier does not move, ring gear (20) rotates counterclockwise. Since ring gear (20) and drive sprocket housing (9) are held together with bolts (3), drive sprocket housing (9) rotates counterclockwise. This causes the right track to move in a forward direction.