Two-gear transfer mechanism
By designing a two-speed transfer mechanism, the drive wheel speed is matched and two-speed shifting is achieved under different road conditions. This solves the problem of slippage of open differentials on ice and roads with good traction, and improves the vehicle's driving ability on complex road surfaces.
Patent Information
- Application Number
- CN202421568784.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Existing open differentials are prone to slippage when one drive wheel is on ice and the other drive wheel is on a surface with good traction, and they do not have a two-speed transmission function.
The system employs a two-speed transfer mechanism, which consists of a drive component, a first half-shaft, a first transfer mechanism housing, a B1 brake, a B2 brake, an F1 one-way clutch, an F2 one-way clutch, an F5 one-way clutch, a C1 clutch, a first gear ring, a first planetary carrier, a first set of planetary gears, and a first sun gear. This structure enables the drive wheels to match their speeds under different road conditions and achieve two-speed transmission.
On icy surfaces and roads with good traction, the drive wheels rotate at the same speed, allowing the vehicle to drive normally. It also features two-speed transmission, which solves the slippage problem and improves the vehicle's ability to drive under complex road conditions.
Smart Images
Figure CN223662472U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a two-gear transfer mechanism, which can change the rotating speed of the output power of a driving member (which can also be a driven gear of a main reducer, a driven gear of a transfer case, or a rotor shaft of a motor) and transmit the power to two driving wheels respectively, allowing one driving wheel of a drive axle to rotate beyond the other driving wheel under external force without deceleration. BACKGROUND
[0002] Currently, the known open differential mechanism can transmit the power output by the driven gear of the main reducer of a vehicle to the left and right driving wheels to rotate at different speeds. The open differential mechanism has the following disadvantages: 1. When one side of the vehicle is on ice and the other side is on a road with good adhesion, the driving wheel on the ice will slip, while the driving wheel on the road with good adhesion will not move; at this time, the vehicle cannot move at all. 2. It does not have a two-gear transmission. SUMMARY
[0003] The utility model provides a two-gear transfer mechanism, which can make the driving wheel on one side of the vehicle on ice and the driving wheel on the other side on a road with good adhesion rotate at the same speed; at this time, the vehicle can move. It also has the function of two-gear transmission.
[0004] The utility model adopts the technical scheme of: a driving member, a first half shaft (which can also be a transmission shaft), a first transfer mechanism shell, a B1 brake, a B2 brake, a F1 one-way clutch, a F2 one-way clutch, a F5 one-way clutch, a C1 clutch, a first gear ring, a first planet carrier, a first set of planetary gears, a first sun gear, a second half shaft (which can also be a transmission shaft), a second transfer mechanism shell, a B3 brake, a B4 brake, a F3 one-way clutch, a F4 one-way clutch, a F6 one-way clutch, a C2 clutch, a second gear ring, a second planet carrier, a second set of planetary gears, and a second sun gear.
[0005] The utility model discloses a structure is: first sun gear axle is equipped with first sun gear, first connecting disc, first group bolt hole (the number of bolt hole is not limited), C1 clutch driving friction piece installation spline and with first sun gear axle coaxial round hole, can use bolt and install first connecting disc of first sun gear in the one side of driving piece, first sun gear axle is equipped with the driving friction piece of C1 clutch, the driving friction piece of C1 clutch is connected with F5 one-way clutch outer raceway, and is equipped with first half axle spline hole, first group planetary gear shaft (the number of planetary gear shaft is not limited), first group transmission pin, second ring groove in first planetary carrier, F5 one-way clutch inner raceway body is equipped with first group transmission pin hole, F5 one-way clutch inner raceway and with first sun gear axle coaxial round hole, first group transmission pin is installed in first group transmission pin hole, F5 one-way clutch roller assembly is installed on F5 one-way clutch inner raceway, and the outer ring of F5 one-way clutch is installed on F5 one-way clutch roller assembly, and the inner circumferential surface of the outer ring of F5 one-way clutch is the outer raceway of F5 one-way clutch roller assembly, and the spline end of first half axle can be installed with first half axle spline hole cooperation and power transmission, first group planetary gear is installed on first group planetary gear shaft, and one planetary gear is installed on each planetary gear shaft, and second ring groove can limit F5 one-way clutch inner raceway body and the axial movement of planetary gear after installing snap ring. First group planetary gear is arranged between first gear ring and first sun gear, and is engaged with first gear ring and first sun gear, and is composed of first gear ring, first planetary carrier, first group planetary gear, first sun gear first single row planetary gear mechanism. Second sun gear axle is equipped with second sun gear, second connecting disc, second group bolt hole (the number of bolt hole is not limited), C2 clutch driving friction piece installation spline and with second sun gear axle coaxial round hole, can use bolt and install second connecting disc of second sun gear in the other side of driving piece, second sun gear axle is equipped with the driving friction piece of C2 clutch, the driving friction piece of C2 clutch is connected with F6 one-way clutch outer ring, and is equipped with second half axle spline hole, second group planetary gear shaft (the number of planetary gear shaft is not limited), second group transmission pin, second ring groove in second planetary carrier, F6 one-way clutch inner raceway body is equipped with second group transmission pin hole, F6 one-way clutch inner raceway and with second sun gear axle coaxial round hole, second group transmission pin is installed in second group transmission pin hole, F6 one-way clutch roller assembly is installed on F6 one-way clutch inner raceway, and the outer ring of F6 one-way clutch is installed on F6 one-way clutch roller assembly, and the inner circumferential surface of the outer ring of F6 one-way clutch is the outer raceway of F6 one-way clutch roller assembly, and the spline end of second half axle can be installed with second half axle spline hole cooperation and power transmission, second group planetary gear is installed on second group planetary gear shaft, and one planetary gear is installed on each planetary gear shaft, and second ring groove can limit F5 one-way clutch inner raceway body and the axial movement of planetary gear after installing snap ring.The second set of planetary gears is arranged between and engaged with the second ring gear and the second sun gear, and the second ring gear, the second carrier, the second set of planetary gears and the second sun gear form a second single-row planetary gear mechanism. The roller assembly of the F1 one-way clutch and the roller assembly of the F2 one-way clutch are both mounted on the outer periphery of the first ring gear, and the outer peripheral surface of the first ring gear is the inner raceway of the roller assembly of the F1 one-way clutch and the roller assembly of the F2 one-way clutch; the roller assembly of the F3 one-way clutch and the roller assembly of the F4 one-way clutch are both mounted on the outer periphery of the second ring gear, and the outer peripheral surface of the second ring gear is the inner raceway of the roller assembly of the F3 one-way clutch and the roller assembly of the F4 one-way clutch. The outer ring of the F1 one-way clutch is mounted on the roller assembly of the F1 one-way clutch, and the inner peripheral surface of the outer ring of the F1 one-way clutch is the outer raceway of the roller assembly of the F1 one-way clutch; the outer ring of the F2 one-way clutch is mounted on the roller assembly of the F2 one-way clutch, and the inner peripheral surface of the outer ring of the F2 one-way clutch is the outer raceway of the roller assembly of the F2 one-way clutch; the outer ring of the F3 one-way clutch is mounted on the roller assembly of the F3 one-way clutch, and the inner peripheral surface of the outer ring of the F3 one-way clutch is the outer raceway of the roller assembly of the F3 one-way clutch; the outer ring of the F4 one-way clutch is mounted on the roller assembly of the F4 one-way clutch, and the inner peripheral surface of the outer ring of the F4 one-way clutch is the outer raceway of the roller assembly of the F4 one-way clutch. The B1 brake is mounted on the first transfer mechanism housing and can brake the outer ring of the F1 one-way clutch; the B2 brake is mounted on the first transfer mechanism housing and can brake the outer ring of the F2 one-way clutch; the B3 brake is mounted on the second transfer mechanism housing and can brake the outer ring of the F3 one-way clutch; and the B4 brake is mounted on the second transfer mechanism housing and can brake the outer ring of the F4 one-way clutch. BRIEF DESCRIPTION OF DRAWINGS
[0006] In the figure: 1. clockwise direction, 2. counterclockwise direction, 3. driving member, 5. first sub-transmission mechanism shell, 6. second sub-transmission mechanism shell, 10. first sun gear, 11. first connecting disc, 12 first ring gear, 13. first set of planetary gears, 14. first set of bolt holes, 15. first planet carrier, 16. first half shaft spline hole, 17. first set of planetary gear shafts, 18. first snap ring groove, 19. first half shaft, 20. second sun gear, 21. second connecting disc, 22. second ring gear, 23. second set of planetary gears, 24. second set of bolt holes, 25. second planet carrier, 26. second half shaft spline hole, 27. second set of planetary gear shafts, 28. second snap ring groove, 29. second half shaft, 31. outer ring of F1 one-way clutch, 32. outer ring of F2 one-way clutch, 33. roller assembly of F1 one-way clutch, 34. roller assembly of F2 one-way clutch, 41. outer ring of F3 one-way clutch, 42. outer ring of F4 one-way clutch, 43. roller assembly of F3 one-way clutch, 44. roller assembly of F4 one-way clutch, 50. first sun gear shaft, 51. driving friction plate mounting spline of C1 clutch, 52. inner raceway of F5 one-way clutch, 53. first set of transmission pins, 54. first set of transmission pin holes, 55. inner raceway body of F5 one-way clutch, 60. second sun gear shaft, 61. driving friction plate mounting spline of C2 clutch, 62. inner raceway of F6 one-way clutch, 63. second set of transmission pins, 64. second set of transmission pin holes, 65. inner raceway body of F6 one-way clutch.
[0007] The utility model makes further illustration in connection with the drawings:
[0008] Figure 1 It is the working principle schematic view of the driving member (3), first sub-transmission mechanism shell (5), B1 brake, B2 brake, F1 one-way clutch, F2 one-way clutch, first sun gear shaft (50), C1 clutch, first ring gear (12), first set of planetary gears (13), first planet carrier (15), F5 one-way clutch, first sun gear (10), first half shaft (19), second sub-transmission mechanism shell (6), B3 brake, B4 brake, F3 one-way clutch, F4 one-way clutch, second sun gear shaft (60), C2 clutch, second ring gear (22), second set of planetary gears (23), second planet carrier (25), F6 one-way clutch, second sun gear (20), second half shaft (29) of the utility model.
[0009] Figure 2 It is the overhead schematic view of the first planet carrier (15) of the utility model.
[0010] Figure 3 It is the section schematic view along X1, X1 axis of the first planet carrier (15) of the utility model.
[0011] Figure 4 is a top view schematic diagram of the second planet carrier (25) of the utility model.
[0012] Figure 5 is a section view schematic diagram of the second planet carrier (25) of the utility model along X3, X4 axis.
[0013] Figure 6 is a top view schematic diagram of the first sun wheel shaft (50) of the utility model.
[0014] Figure 7 is a section view schematic diagram of the first sun wheel shaft (50) of the utility model along Y1, Y2 axis.
[0015] Figure 8 is a top view schematic diagram of the second sun wheel shaft (60) of the utility model.
[0016] Figure 9 is a section view schematic diagram of the second sun wheel shaft (60) of the utility model along Y3, Y4 axis.
[0017] Figure 10 is a top view schematic diagram of the F5 one-way clutch inner race body (55) of the utility model.
[0018] Figure 11 is a section view schematic diagram of the F5 one-way clutch inner race body (55) of the utility model along X5, X6 axis.
[0019] Figure 12 is a top view schematic diagram of the F6 one-way clutch inner race body (65) of the utility model.
[0020] Figure 13 is a section view schematic diagram of the F5 one-way clutch inner race body (55) of the utility model along X7, X8 axis. DETAILED DESCRIPTION
[0021] As Figure 1As shown, the first sun shaft (50) is installed on one side of the driving member (3); the driving friction plate of the C1 clutch is installed on the first sun shaft (50); the driven friction plate of the C1 clutch is connected with the outer ring of the F5 one-way clutch; the inner raceway body (55) of the F5 one-way clutch and the first set of planetary gears (13) are installed on the first planetary carrier (15), the roller assembly of the F5 one-way clutch is installed on the F5 one-way inner raceway (52) provided on the F5 one-way inner raceway body (55); the spline end of the first half shaft (19) is installed in the first half shaft spline hole (16) provided on the first planetary carrier (15). The first sun gear (10) provided on the first sun shaft (50) and the first planetary carrier (15), the first set of planetary gears (13), and the first ring gear (12) form a first single-row planetary gear mechanism; the second sun shaft (60) is installed on the other side of the driving member (3); the driving friction plate of the C2 clutch is installed on the second sun shaft (60); the driven friction plate of the C2 clutch is connected with the outer ring of the F6 one-way clutch; the inner raceway body (65) of the F6 one-way clutch and the second set of planetary gears (23) are installed on the second planetary carrier (65), the roller assembly of the F5 one-way clutch is installed on the F6 one-way inner raceway (62) provided on the F6 one-way inner raceway body (65); the spline end of the second half shaft (29) is installed in the second half shaft spline hole (26) provided on the second planetary carrier (25). The second sun gear (20) provided on the second sun shaft (60) and the second planetary carrier (25), the second set of planetary gears (23), and the second ring gear (22) form a second single-row planetary gear mechanism; the roller assembly (33) of the F1 one-way clutch is installed on the first ring gear (12), the outer circumferential surface of the first ring gear (12) serves as the inner raceway of the F1 one-way clutch, the outer ring (31) of the F1 one-way clutch is installed on the roller assembly (33) of the F1 one-way clutch, and the inner circumferential surface of the outer ring (31) of the F1 one-way clutch serves as the outer raceway of the F1 one-way clutch; the B1 brake is installed on the first transfer mechanism housing (5), and the B1 brake can brake the outer ring (31) of the F1 one-way clutch. The roller assembly (34) of the F2 one-way clutch is installed on the first ring gear (12), the outer circumferential surface of the first ring gear (12) serves as the inner raceway of the F2 one-way clutch, the outer ring (32) of the F2 one-way clutch is installed on the roller assembly (34) of the F2 one-way clutch, and the inner circumferential surface of the outer ring (32) of the F2 one-way clutch serves as the outer raceway of the F2 one-way clutch; the B2 brake is installed on the first transfer mechanism housing (5), and the B2 brake can brake the outer ring (32) of the F2 one-way clutch.The roller assembly (43) of the F3 one-way clutch is installed on the second ring gear (22), the outer circumferential surface of the second ring gear (22) serving as the inner raceway of the F3 one-way clutch, the outer ring (41) of the F3 one-way clutch being installed on the roller assembly (43) of the F3 one-way clutch, the inner circumferential surface of the outer ring (41) of the F3 one-way clutch serving as the outer raceway of the F3 one-way clutch; the B3 brake is installed on the second transfer case housing (6), and the B3 brake can brake the outer ring (41) of the F3 one-way clutch. The roller assembly (44) of the F4 one-way clutch is installed on the second ring gear (22), the outer circumferential surface of the second ring gear (22) serving as the inner raceway of the F4 one-way clutch, the outer ring (42) of the F4 one-way clutch being installed on the roller assembly (44) of the F4 one-way clutch, the inner circumferential surface of the outer ring (42) of the F4 one-way clutch serving as the outer raceway of the F4 one-way clutch; the B4 brake is installed on the second transfer case housing (6), and the B4 brake can brake the outer ring (42) of the F4 one-way clutch.
[0022] As shown in Figure 2 , the first half shaft spline hole (16), the first set of planetary gear shafts (17), and the first set of transmission pins (53) are arranged on the first carrier (15).
[0023] As shown in Figure 3 , the first half shaft spline hole (16), the first set of planetary gear shafts (17), the first set of transmission pins (53), and the first snap ring groove (18) are arranged on the first carrier (15).
[0024] As shown in Figure 4 , the second half shaft spline hole (26), the second set of planetary gear shafts (27), and the second set of transmission pins (63) are arranged on the second carrier (25).
[0025] As shown in Figure 5 , the second half shaft spline hole (26), the second set of planetary gear shafts (27), the second set of transmission pins (63), and the second snap ring groove (28) are arranged on the second carrier (25).
[0026] As shown in Figure 6 , the first sun gear (10), the C1 clutch driving friction plate mounting spline (51), the first connecting disc (11), and the first set of bolt holes (14) are arranged on the first sun gear shaft (50).
[0027] As shown in Figure 7 , the first sun gear (10), the C1 clutch driving friction plate mounting spline (51), the first connecting disc (11), and the first set of bolt holes (14) are arranged on the first sun gear shaft (50).
[0028] As shown in Figure 8As shown in the second sun gear shaft (60) is provided with the second sun gear (20), C2 clutch driving friction plate installation spline (61), the second connecting disc (21), the second group bolt hole (24).
[0029] As shown in the second sun gear shaft (60) is provided with the second sun gear (20), C2 clutch driving friction plate installation spline (61), the second connecting disc (21), the second group bolt hole (24). Figure 9
[0030] As shown in the second sun gear shaft (60) is provided with the second sun gear (20), C2 clutch driving friction plate installation spline (61), the second connecting disc (21), the second group bolt hole (24). Figure 10
[0031] As shown in the second sun gear shaft (60) is provided with the second sun gear (20), C2 clutch driving friction plate installation spline (61), the second connecting disc (21), the second group bolt hole (24). Figure 11
[0032] As shown in the second sun gear shaft (60) is provided with the second sun gear (20), C2 clutch driving friction plate installation spline (61), the second connecting disc (21), the second group bolt hole (24). Figure 12
[0033] As shown in the second sun gear shaft (60) is provided with the second sun gear (20), C2 clutch driving friction plate installation spline (61), the second connecting disc (21), the second group bolt hole (24). Figure 13
[0034] The working process of the utility model:
[0035] When the vehicle is running, the spline end of the first half shaft (19) has been installed in the first half shaft spline hole (16) of the first planet carrier (15), and the other end of the first half shaft (19) has been installed with the first drive wheel, the spline end of the second half shaft (29) has been installed in the second half shaft spline hole (26) of the second planet carrier (25), and the other end of the second half shaft (29) has been installed with the second drive wheel.
[0036] 1. The vehicle drives forward:
[0037] When in gear 1, C1 clutch and C2 clutch are both in non-connection state and do not transmit power. B1 brake and B3 brake are in braking state, B2 brake and B4 brake are in non-braking state; the outer ring (31) of F1 one-way clutch and the outer ring (41) of F3 one-way clutch are fixed, so that the first ring gear (12) and the second ring gear (22) can rotate in the clockwise direction beyond the outer ring (31) of F1 one-way clutch and the outer ring (41) of F3 one-way clutch, but cannot rotate in the counterclockwise direction beyond the outer ring (31) of F1 one-way clutch and the outer ring (41) of F3 one-way clutch, while the outer ring (32) of F2 one-way clutch and the outer ring (42) of F4 one-way clutch are not fixed, so that the rotation of the first ring gear (12) and the second ring gear (22) is not limited by the outer ring (32) of F2 one-way clutch and the outer ring (42) of F4 one-way clutch. When the driving part (3) rotates in the clockwise direction (1) to output driving force, the driving part (3) drives the first sun gear shaft (50) and the second sun gear shaft (60) connected on both sides to make the first sun gear (10) and the second sun gear (20) rotate in the clockwise direction (1) at the speed of N1. When the first sun gear (10) rotates in the clockwise direction (1) at the speed of N1, if the first planetary carrier (15) is stationary, each gear of the first planetary gear set (13) will rotate in the counterclockwise direction around the first planetary gear shaft (17) at the speed of n1, while trying to make the first ring gear (12) rotate in the counterclockwise direction; but the first ring gear (12) cannot rotate in the counterclockwise direction, so that each gear of the first planetary gear set (13) can only revolve around the first sun gear (10) in the clockwise direction at the speed of Nn1. Therefore, the first planetary carrier (15) drives the first half shaft (19) and the first drive wheel to rotate in the clockwise direction at the speed of Nn1, thereby driving the vehicle to move forward. If the first sun gear (10) still rotates in the clockwise direction at the speed of N1 at this moment, while the first drive wheel drives the first half shaft (19) and the first planetary carrier (15) to rotate in the clockwise direction (1) at a speed beyond Nn1, the gears of the first planetary gear set (13) will rotate in the clockwise direction around the first planetary gear shaft (17), and in turn the gears of the first planetary gear set (13) will drive the first ring gear (12) to rotate in the clockwise direction beyond the outer ring (31) of F1 one-way clutch.Meanwhile, when the second sun gear (20) rotates in the clockwise direction (1) at the speed of N1, if the second carrier (25) is not moving, each gear of the second set of planetary gears (23) will rotate around the second set of planetary gear shafts (27) in the counterclockwise direction at the speed of n1, while trying to rotate the second ring gear (22) in the counterclockwise direction; but the second ring gear (22) has already been unable to rotate in the counterclockwise direction, so that each gear of the second set of planetary gears (23) can only revolve around the second sun gear (20) in the clockwise direction at the speed of Nn1, therefore, the second set of planetary gears (23) drives the second gear carrier (25) to rotate in the clockwise direction (1) at the speed of Nn1; the second half shaft spline hole (26) in the second gear carrier (25) drives the second half shaft (29) and the second drive wheel to rotate in the clockwise direction at the speed of Nn1, thereby driving the vehicle to move forward. If the second sun gear (20) still rotates in the clockwise direction at the speed of N1 at this moment, while the second drive wheel drives the second half shaft (29) and the second gear carrier (25) to rotate in the clockwise direction (1) at a speed exceeding Nn1, the gears of the second set of planetary gears (23) will rotate around the second set of planetary gear shafts (27) in the clockwise direction, and in turn, the gears of the second set of planetary gears (23) will drive the second ring gear (22) to rotate along the outer ring (41) of the F3 one-way clutch in the clockwise direction.
[0038] In gear 2, C1 clutch and C2 clutch are both in the state of being combined and transmitting power. B1 brake and B3 brake are in the state of braking, and B2 brake and B4 brake are in the state of not braking; the outer ring (31) of F1 one-way clutch and the outer ring (41) of F3 one-way clutch are both fixed, so that the first ring gear (12) and the second ring gear (22) are both in the state of being able to rotate in the clockwise direction beyond the outer ring (31) of F1 one-way clutch and the outer ring (41) of F3 one-way clutch, but cannot rotate in the counterclockwise direction beyond the outer ring (31) of F1 one-way clutch and the outer ring (41) of F3 one-way clutch, while the outer ring (32) of F2 one-way clutch and the outer ring (42) of F4 one-way clutch are not fixed, so that the rotation of the first ring gear (12) and the second ring gear (22) is not limited by the outer ring (32) of F2 one-way clutch and the outer ring (42) of F4 one-way clutch; the outer ring of F5 one-way clutch can drive the inner race body (55) of F5 one-way clutch to rotate in the clockwise direction when the outer ring of F5 one-way clutch rotates in the clockwise direction, and the outer ring of F5 one-way clutch can rotate beyond the inner race body (55) of F5 one-way clutch when the outer ring of F5 one-way clutch rotates in the counterclockwise direction; the outer ring of F6 one-way clutch can drive the inner race body (65) of F6 one-way clutch to rotate in the clockwise direction when the outer ring of F6 one-way clutch rotates in the clockwise direction, and the outer ring of F6 one-way clutch can rotate beyond the inner race body (65) of F6 one-way clutch when the outer ring of F6 one-way clutch rotates in the counterclockwise direction. When the driving part (3) rotates in the clockwise direction (1) to output driving force, the driving part (3) drives the first sun gear shaft (50) and the second sun gear shaft (60) connected on both sides to rotate the C1 clutch and the C2 clutch in the clockwise direction (1); when the C1 clutch rotates in the clockwise direction (1) at the speed of N1, the C1 clutch drives the outer ring of F5 one-way clutch to rotate in the clockwise direction (1) at the speed of N1, the outer ring of F5 one-way clutch drives the clutch F5 one-way clutch inner race body (55) to rotate in the clockwise direction (1) at the speed of N1, the F5 one-way clutch inner race body (55) drives the first planetary carrier (15) to rotate in the clockwise direction (1) at the speed of N1 through the first group of transmission pins (53), the first half shaft spline hole (16) in the first planetary carrier (15) drives the first half shaft (19) and the first drive wheel to rotate in the clockwise direction at the speed of N1, thereby driving the vehicle to move forward; while the gear of the first group of planetary gears (13) drives the first ring gear (12) to rotate in the clockwise direction beyond the outer ring (31) of F1 one-way clutch.If the C1 clutch is still rotating clockwise at the speed of N1 at this moment, and the first drive wheel drives the first half axle (19), the first planet carrier (15), the inner race body (55) of the F5 one-way clutch to rotate clockwise at a speed exceeding N1, the inner race body (55) of the F5 one-way clutch will rotate beyond the outer race of the F5 one-way clutch, and the gears of the first set of planetary gears (13) will rotate around the first set of planetary gear shafts (17) in the clockwise direction, and then the gears of the first set of planetary gears (13) will drive the first ring gear (12) to rotate clockwise beyond the outer race (31) of the F1 one-way clutch. At the same time, when the C2 clutch rotates clockwise at the speed of N1, the C2 clutch drives the outer race of the F6 one-way clutch to rotate clockwise at the speed of N1, and the outer race of the F6 one-way clutch drives the inner race body (65) of the F6 one-way clutch to rotate clockwise at the speed of N1, and the inner race body (65) of the F6 one-way clutch drives the second planet carrier (25) to rotate clockwise at the speed of N1 through the second set of transmission pins (63), and the second half axle spline hole (26) in the second planet carrier (25) drives the second half axle (29), the second drive wheel to rotate clockwise at the speed of N1, and then drives the vehicle to move forward; and the gears of the second set of planetary gears (23) will drive the second ring gear (22) to rotate clockwise beyond the outer race (41) of the F3 one-way clutch. If the C2 clutch is still rotating clockwise at the speed of N1 at this moment, and the second drive wheel drives the second half axle (29), the second planet carrier (25), the inner race body (65) of the F6 one-way clutch to rotate clockwise at a speed exceeding N1, the inner race body (65) of the F6 one-way clutch will rotate beyond the outer race of the F6 one-way clutch, and the gears of the second set of planetary gears (23) will rotate around the second set of planetary gear shafts (27) in the clockwise direction, and then the gears of the second set of planetary gears (23) will drive the second ring gear (22) to rotate clockwise beyond the outer race (41) of the F3 one-way clutch.
[0039] 2. Vehicle moving backward:
[0040] C1 clutch, C2 clutch are in non-binding, not power transmission state; B2 brake, B4 brake are in braking state, B1 brake, B3 brake are in non-braking state; The outer ring (32) of F2 one-way clutch, the outer ring (42) of F4 one-way clutch are fixed, so that the first ring gear (12), the second ring gear (22) are in the direction of counterclockwise direction overrun F2 one-way clutch outer ring (32), F4 one-way clutch outer ring (42) can rotate, but not clockwise direction overrun F2 one-way clutch outer ring (32), F4 one-way clutch outer ring (42) can rotate, while the outer ring (31) of F1 one-way clutch, the outer ring (32) of F3 one-way clutch are not fixed, so that the first ring gear (12), the second ring gear (22) can rotate without the restriction of F1 one-way clutch outer ring (31), F3 one-way clutch outer ring (32). When the driving part (3) rotates in the counterclockwise direction (2) to output driving force, the driving part (3) drives the first sun gear shaft (50) and the second sun gear shaft (60) connected on both sides to make the first sun gear (10), the second sun gear (20) rotate in the counterclockwise direction (2) at the speed of N2. When the first sun gear (10) rotates in the counterclockwise direction at the speed of N2, if the first planetary carrier (15) is stationary, each gear of the first planetary gear set (13) will rotate around the first planetary gear shaft (17) in the clockwise direction at the speed of n2, while trying to make the first ring gear (12) rotate in the clockwise direction. But the first ring gear (12) cannot rotate in the clockwise direction, so that each gear of the first planetary gear set (13) can only revolve around the first sun gear (10) in the counterclockwise direction at the speed of Nn2. Therefore, the first half shaft spline hole (16) in the first planetary carrier (15) drives the first half shaft (19), the first drive wheel to rotate in the counterclockwise direction at the speed of Nn2, thereby driving the vehicle to move backward. If the first sun gear (10) still rotates in the counterclockwise direction at the speed of N2 at this moment, and the first drive wheel drives the first half shaft (19), the first planetary carrier (15) to rotate in the counterclockwise direction (2) at a speed exceeding Nn2, the gears of the first planetary gear set (13) will rotate around the first planetary gear shaft (17) in the counterclockwise direction, and then the gears of the first planetary gear set (13) will drive the first ring gear (12) to rotate in the counterclockwise direction and overrun the outer ring (32) of F2 one-way clutch.At the same time, when the second sun gear (20) rotates counterclockwise at the speed of N2, if the second carrier (25) is not moving, each gear of the second set of planetary gears (23) will rotate around the second set of planetary gear shafts (27) in the clockwise direction at the speed of n2, while trying to make the second ring gear (22) rotate in the clockwise direction; but the second ring gear (22) has already been unable to rotate in the clockwise direction, so that each gear of the second set of planetary gears (23) can only revolve around the second sun gear (20) in the counterclockwise direction at the speed of Nn2, therefore, the second set of planetary gears (23) drives the second carrier (25) to rotate counterclockwise at the speed of Nn2 (2); so that the first half shaft spline hole (26) in the second carrier (25) drives the second half shaft (29), the second drive wheel to rotate counterclockwise at the speed of Nn2, and further drives the vehicle to drive backward. If the second sun gear (20) still rotates counterclockwise at the speed of N2 at this moment, and the second drive wheel drives the second half shaft (29), the second carrier (25) to rotate counterclockwise (2) at a speed exceeding Nn2, it will drive the gears of the second set of planetary gears (23) to rotate around the second set of planetary gear shafts (27) in the counterclockwise direction, and then the gears of the second set of planetary gears (23) will drive the second ring gear (22) to rotate along the outer ring (42) of the F4 one-way clutch in the counterclockwise direction.
Claims
1. A two-gear transfer mechanism, which is composed of a driving member, a first half shaft, a first transfer mechanism shell, a B1 brake, a B2 brake, a F1 one-way clutch, a F2 one-way clutch, a F5 one-way clutch, a C1 clutch, a first ring gear, a first planet carrier, a first set of planetary gears, a first sun gear, a second half shaft, a second transfer mechanism shell, a B3 brake, a B4 brake, a F3 one-way clutch, a F4 one-way clutch, a F6 one-way clutch, a C2 clutch, a second ring gear, a second planet carrier, a second set of planetary gears, a second sun gear; characterized in that: The driving friction piece of the C1 clutch is installed on the first sun gear shaft; the driven friction piece of the C1 clutch is connected with the outer ring of the F5 one-way clutch; the F5 inner race body is installed on the first planet carrier, and the roller assembly of the F5 one-way clutch is installed on the F5 inner race body; the driving friction piece of the C2 clutch is installed on the second sun gear shaft; the driven friction piece of the C2 clutch is connected with the outer ring of the F6 one-way clutch; the F6 inner race body is installed on the second planet carrier, and the roller assembly of the F5 one-way clutch is installed on the F6 inner race body.
2. The two-range transfer case of claim 1, wherein: The first sun gear shaft is provided with a C1 clutch driving friction piece mounting spline.
3. The two-range transfer case of claim 1, wherein: The F5 one-way clutch inner race body is provided with a first group of transmission pin holes, an F5 one-way clutch inner race, and a circular hole coaxial with the first sun gear shaft.