CN220302637U - Two-drive-change four-drive transfer case assembly of small eight-gear gearbox - Google Patents

Abstract

The utility model discloses a two-drive-change four-drive transfer case assembly of a small eight-gear gearbox, which comprises an input shaft assembly, a connecting shaft gear assembly, a front axle output shaft assembly, a rear axle output shaft assembly, a shifting fork assembly and a case body assembly. This little eight-gear gearbox two drives become four and drive transfer case assembly adopts the seamless connection with the gearbox axle, makes its effectual axiality of guaranteeing gearbox axle and transfer case axle, has protected the stability of vehicle in the driving, and the gearbox passes through transfer case inner structure's conversion simultaneously, makes its vehicle change into four-wheel drive from original single drive connection, or through changing the big contained angle between gearbox and the transmission shaft, increases the power of gearbox and the driving motility of vehicle, the effectual service life who increases the vehicle simultaneously. The structure has the advantages of simple structure, mature technology, convenient connection, wide application range and the like.

Description

Two-drive-change four-drive transfer case assembly of small eight-gear gearbox

Technical Field

The utility model relates to the technical field of automobile manufacturing, in particular to a two-drive-change four-drive transfer case assembly of a small eight-gear gearbox.

Background

The transfer case is a main component of the existing automobile transmission system, and has the main functions that the power of the transfer case is divided and supplied through the power and the direction of the transfer case, so that the original single function of the transfer case can only be driven by a rear-drive or front-drive transfer case to realize front-rear divided driving; simultaneously, because the coaxiality of the gearbox, the bending angle of the transmission shaft originally connected with the gearbox forms a large included angle, so that the transmission shaft is twisted, the transfer case well solves the problem of the twisting of the transmission shaft, changes the included angle between the transmission shaft and the gearbox, makes the included angle smaller or parallel, ensures that the transmission shaft rotates more stably, increases the torque of the transmission shaft, and simultaneously provides larger power for the gearbox.

The prior art in the current market is that a driving shaft of the gearbox is directly connected with a front axle or a rear axle through a flange for unidirectional driving, so that the power shortage of the gearbox is remarkable, and the service life of the gearbox is reduced due to a large included angle between the gearbox and a transmission shaft.

Therefore, the application provides a two-drive-change four-drive transfer case assembly of a small eight-gear gearbox, so that the power transmission of the gearbox is smoother; the included angle between the gearbox and the transmission shaft is changed, so that the gearbox and the transmission shaft tend to be parallel, and the torque of the transmission shaft is increased. Through gear transmission, the original two-wheel drive is realized into four-wheel drive, and the power is increased, so that the device is more stable and efficient.

Disclosure of Invention

The utility model aims to provide a two-drive-change four-drive transfer case assembly of a small eight-gear gearbox, so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a little eight-gear gearbox two drives become four-wheel drive transfer case assembly, including input shaft subassembly, connecting axle gear assembly, front axle output shaft subassembly, rear axle output shaft subassembly, shift fork subassembly and box subassembly, the input shaft subassembly includes the change over shaft, install low-speed gear, first smooth shelves sliding sleeve and high-speed gear on the change over shaft, the axle sleeve is installed to the one end of change over shaft, the inner core of first bearing is installed to the other end of change over shaft, connecting axle gear assembly includes connecting axle and gear train, the gear train is installed on the connecting axle, still install first gasket on the connecting axle, the inner core of second bearing and the inner core of third bearing are installed respectively at the both ends of connecting axle, the front axle output shaft subassembly includes the front axle output shaft, install needle bearing on the front axle output shaft, the second smooth shelves sliding sleeve, front axle output gear and third gasket, the inner core of fourth bearing and the inner core of fifth bearing are installed respectively at the both ends of front axle output shaft, the rear axle output shaft subassembly includes the rear axle output shaft, install rear axle gear and fourth gasket on the rear axle output shaft, the inner core of sixth bearing and seventh bearing are installed respectively to the both ends of rear axle output shaft are equipped with the inner core and the shift fork assembly and the front axle assembly, the screw and the front axle output shaft cover, the front axle output shaft assembly is equipped with, the screw and the front axle output shaft assembly is equipped with, the screw down, the front axle output shaft assembly and the front axle output shaft assembly.

As a further scheme of the utility model: the lower shell is provided with a first oil seal corresponding to the end part of the conversion shaft, a gear box main shaft is connected in the conversion shaft, a bearing is arranged on the outer side of the gear box main shaft, a front axle oil seal cover and a second oil seal are arranged at the position, corresponding to the front axle output shaft, of the lower shell, a bearing mounting hole is arranged in the lower shell, an outer ring of the second bearing, an outer ring of the fourth bearing and an outer ring of the seventh bearing are arranged in the bearing mounting hole, an air chamber blanking cover is arranged at the end part, corresponding to the shifting fork shaft, of the lower shell, a bearing mounting hole is also arranged in the upper cover, and an outer ring of the first bearing, an outer ring of the third bearing, an outer ring of the fifth bearing and an outer ring of the sixth bearing are arranged in the bearing mounting hole.

As still further aspects of the utility model: the upper cover corresponds to the conversion shaft, the connection shaft and the front axle output shaft and is also provided with an input shaft end cover, a connection shaft end cover and a front axle output shaft end cover respectively, the upper cover corresponds to the rear axle output shaft and is also provided with a rear axle oil seal cover and a third oil seal, the rear axle output shaft is also provided with a mileage tooth spacer bush and mileage teeth, the end part of the rear axle output shaft is also provided with a second flange, a fifth gasket is arranged in the second flange, and the rear axle output shaft is connected with a second nut in a threaded manner.

As still further aspects of the utility model: the upper cover is provided with an air chamber component corresponding to the end part of the shifting fork shaft, the air chamber component comprises an air chamber shell, the air chamber shell is arranged on the upper cover, a piston is arranged in the air chamber shell, the piston penetrates through the shifting fork shaft, the air chamber shell is also provided with an air chamber cover, a bolt penetrates through the air chamber cover, and the air chamber cover is fixedly arranged with the air chamber shell through the bolt.

As still further aspects of the utility model: the front axle output shaft is further provided with a first flange, a second gasket is arranged in the first flange, and the front axle output shaft is provided with a first nut.

Compared with the prior art, the utility model has the beneficial effects that:

1. the device adopts seamless connection with the gearbox shaft, so that the coaxiality of the gearbox shaft and the transfer case shaft is effectively ensured, the stability of a vehicle in the running process is protected, meanwhile, the gearbox is changed into four-wheel drive from original single-wheel drive connection through the conversion of the internal structure of the transfer case, or the power of the gearbox and the running activity of the vehicle are increased through changing a large included angle between the gearbox and a transmission shaft, and the service life of the vehicle is effectively prolonged. The structure has the advantages of simple structure, mature technology, convenient connection, wide application range and the like.

Drawings

FIG. 1 is a side view of a small eight speed gearbox two-drive four-drive transfer case assembly.

FIG. 2 is a cross-sectional view of the main shaft and front axle output shaft of the transmission in a small eight speed transmission two-drive four-drive transfer case assembly.

FIG. 3 is a cross-sectional view of the rear axle output shaft in a small eight speed gearbox two-drive-change four-drive transfer case assembly.

FIG. 4 is a cross-sectional view of the shift rails in a two-drive, four-drive transfer case assembly for a small eight speed gearbox.

FIG. 5 is a side view of a two-drive, four-drive transfer case assembly for a small eight speed transmission.

In the figure: 1. a gearbox main shaft; 2. a bearing; 3. a first oil seal; 4. a lower case; 5. a shaft sleeve; 6. a low gear; 7. a switching shaft; 8. the first slide sleeve is provided with a first slide sleeve; 9. a high gear; 10. an upper cover; 11. a first bearing; 12. an input shaft end cap; 13. a second bearing; 14. a first gasket; 15. a connecting shaft; 16. a gear set; 17. a third bearing; 18. connecting a shaft end cover; 19. a first nut; 20. a front axle output shaft; 21. a second gasket; 22. a first flange; 23. a second oil seal; 24. a front axle oil seal cover; 25. a fourth bearing; 26. a second slide sleeve; 27. needle roller bearings; 28. a front axle output gear; 29. a third gasket; 30. a fifth bearing; 31. a front axle output shaft end cover; 32. a blocking cover of the air chamber; 33. a seventh bearing; 34. a rear axle output shaft; 35. a rear axle gear; 36. a fourth gasket; 37. a sixth bearing; 38. mileage tooth spacer bush; 39. mileage teeth; 40. a rear axle oil seal cover; 41. a third oil seal; 42. a second flange; 43. a fifth gasket; 44. a second nut; 45. a gas chamber cover; 46. a piston; 47. an air chamber shell; 48. a fork shaft; 49. a fastening screw; 50. a shifting fork; 51. and (5) a bolt.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, in the embodiment of the utility model, a small eight-gear gearbox two-drive-change four-drive transfer case assembly comprises an input shaft assembly, a connecting shaft gear assembly, a front axle output shaft assembly, a rear axle output shaft assembly, a shifting fork assembly and a box body assembly, wherein the input shaft assembly comprises a conversion shaft 7, a low-speed gear 6, a first sliding sleeve 8 and a high-speed gear 9 are arranged on the conversion shaft 7, a shaft sleeve 5 is arranged at one end of the conversion shaft 7, an inner core of a first bearing 11 is arranged at the other end of the conversion shaft 7, the connecting shaft gear assembly comprises a connecting shaft 15 and a gear set 16, the gear set 16 is arranged on the connecting shaft 15, a first gasket 14 is further arranged on the connecting shaft 15, an inner core of a second bearing 13 and an inner core of a third bearing 17 are respectively arranged at two ends of the connecting shaft 15, the front axle output shaft assembly comprises a front axle output shaft 20, a needle bearing 27, a second slide sliding sleeve 26, a front axle output gear 28 and a third gasket 29 are arranged on the front axle output shaft 20, an inner core of a fourth bearing 25 and an inner core of a fifth bearing 30 are respectively arranged at two ends of the front axle output shaft 20, the rear axle output shaft assembly comprises a rear axle output shaft 34, a rear axle gear 35 and a fourth gasket 36 are arranged on the rear axle output shaft 34, an inner core of a sixth bearing 37 and an inner core of a seventh bearing 33 are respectively arranged at two ends of the rear axle output shaft 34, two groups of shifting fork assemblies are respectively corresponding to the first slide sliding sleeve 8 and the second slide sliding sleeve 26, each shifting fork assembly comprises a shifting fork shaft 48, a fastening screw 49 and a shifting fork 50, the shifting fork 50 is fixedly arranged with the shifting fork shaft 48 through the fastening screw 49, the box assembly comprises a lower shell 4, an upper cover 10 is arranged on the outer side of the lower shell 4, and the shaft gear assembly and the front axle output shaft assembly, the rear axle output shaft assembly and the shift fork assembly are both mounted within the lower housing 4 and the upper cover 10.

The lower shell 4 is provided with a first oil seal 3 corresponding to the end part of the conversion shaft 7, the conversion shaft 7 is internally connected with a gearbox main shaft 1, the outer side of the gearbox main shaft 1 is provided with a bearing 2, the lower shell 4 is provided with a front axle oil seal cover 24 and a second oil seal 23 corresponding to the penetrating part of the front axle output shaft 20, the lower shell 4 is internally provided with a bearing mounting hole, the bearing mounting hole is internally provided with an outer ring of a second bearing 13, an outer ring of a fourth bearing 25 and an outer ring of a seventh bearing 33, the lower shell 4 is correspondingly provided with an air chamber blanking cover 32 corresponding to the end part of a shifting fork shaft 48, the upper cover 10 is internally provided with a bearing mounting hole, and the outer rings of the first bearing 11, the third bearing 17, the fifth bearing 30 and the sixth bearing 37 are internally provided with bearing mounting holes.

The upper cover 10 is also provided with an input shaft end cover 12, a connecting shaft end cover 18 and a front axle output shaft end cover 31 corresponding to the conversion shaft 7, the connecting shaft 15 and the front axle output shaft 20 respectively, the upper cover 10 is also provided with a rear axle oil seal cover 40 and a third oil seal 41 corresponding to the rear axle output shaft 34, the rear axle output shaft 34 is also provided with a mileage tooth spacer 38 and mileage teeth 39, the end part of the rear axle output shaft 34 is also provided with a second flange 42, a fifth gasket 43 is arranged in the second flange 42, and the rear axle output shaft 34 is in threaded connection with a second nut 44.

The end part of the upper cover 10 corresponding to the shifting fork shaft 48 is provided with an air chamber component, the air chamber component comprises an air chamber shell 47, the air chamber shell 47 is arranged on the upper cover 10, a piston 46 is arranged in the air chamber shell 47, the piston 46 penetrates through the shifting fork shaft 48, the air chamber shell 47 is also provided with an air chamber cover 45, a bolt 51 penetrates through the air chamber cover 45, and the air chamber cover 45 is fixedly arranged with the air chamber shell 47 through the bolt 51.

The front axle output shaft 20 is also provided with a first flange 22, a second gasket 21 is arranged in the first flange 22, and the front axle output shaft 20 is provided with a first nut 19.

The working principle of the utility model is as follows:

an input shaft assembly: firstly, the low-gear 6, the first sliding sleeve 8 and the high-gear 9 are arranged on the shift shaft 7, then the shaft sleeve 5 is arranged at the lower end, and the inner core of the first bearing 11 is arranged at the other end

The connecting shaft 15 and the gear set 16 are then fitted and then the first spacer 14 is fitted and the inner core of the second bearing 13 and the inner core of the third bearing 17 are fitted;

then the tail end of the front axle output shaft 20 is provided with a needle bearing 27, a second slide sleeve 26 is arranged at the same time, then a front axle output gear 28 is arranged in place, a third gasket 29 is arranged at the same time, and then the two ends are respectively provided with an inner core of a fourth bearing 25 and an inner core of a fifth bearing 30;

then the rear axle output shaft 34 and the rear axle gear 35 are assembled, and then the fourth gasket 36 is installed, while the inner core of the sixth bearing 37 and the inner core of the seventh bearing 33 are installed in place;

the fork shaft 48 and fork 50 are then assembled while being locked by the tightening screw 49

Then a first oil seal 3 is arranged at the bottom of the lower shell 4, a front axle oil seal cover 24 is arranged, a second oil seal 23 is also arranged, then the outer rings of a second bearing 13, a fourth bearing 25 and a seventh bearing 33 are synchronously arranged in bearing holes, an air chamber seal cover 32 is synchronously arranged in place, and the air chamber seal cover is tightly locked by screws; the lower shell is then passed through the gearbox main shaft 1 and mounted on the bearing 2 to locate it, while the screw is driven. Then the input shaft assembly passes through the transmission main shaft 1 and is installed in place, the shifting fork assembly is installed in the first gear sliding sleeve 8 while the input shaft assembly is installed, and is synchronously installed in the corresponding shifting fork shaft hole, then the connecting shaft gear assembly is installed in the outer ring of the second bearing 13, the rear axle output shaft assembly is installed in the outer ring of the seventh bearing 33 and the front axle output shaft assembly is installed in the outer ring of the fourth bearing 25, and the shifting fork assembly is synchronously installed in the shifting fork shaft hole through the second gear sliding sleeve 26 while the output shaft assembly is installed; then covering 10 an upper cover, and synchronously fastening by screwing;

then the input shaft end cover 12, the connecting shaft end cover 18 and the front axle output shaft end cover 31 are installed and fastened by screwing; then installing a rear axle oil seal cover 40, tightly locking by using screws, sleeving an mileage gauge spacer 38 and an mileage gauge 39 on the rear axle output shaft 34 respectively according to the screw tightening, then installing a third oil seal 41, installing a second flange 42 in place, synchronously filling a fifth gasket 43, tightly locking by using a high-power pneumatic screwdriver, and tightly locking by using a second nut 44;

the two air chamber components are mounted on the upper cover 10 again, and the steps are the same, namely firstly, the air chamber shell 47 is mounted at the corresponding air chamber mounting position, then the piston 46 passes through the shifting fork shaft component and is mounted in the air chamber shell 47, the nut is locked and fastened, then the air chamber cover 45 is covered, and the bolts 51 are synchronously used for fastening and fastening; the first flange 22 is then fitted over the front axle output shaft 20 from the bottom and the second washer 21 is applied to tighten the first nut 19 and lock it tightly.

The transfer case is driven by the gearbox, the internal gear of the transfer case is driven by the gearbox, the two flanges are connected, the front axle and the rear axle are respectively connected with the two flanges, the vehicle is driven by the gearbox to realize two-drive four-drive driving, because the load of the vehicle changes, the vehicle can drive at a high speed or a low speed through the shifting fork on the input shaft, and meanwhile, if the vehicle needs to be converted into two-drive driving, the transfer case is connected with a conversion air chamber, the output mode can be changed at will, or the two-drive or the four-drive driving can be changed according to the needs by starting the air chamber connecting mechanism, the running speed or the stability of the vehicle can not be influenced at the same time, the vehicle can run more efficiently and economically, the problem of large included angle between the gearbox and the transmission shaft is solved, the torque between the gearbox and the transmission shaft is larger, and the service life of the gearbox and the transmission shaft is prolonged.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (5)

1. The utility model provides a little eight speed gearbox two drive become four drive transfer case assemblies, includes input shaft subassembly, connecting axle gear assembly, front axle output shaft subassembly, rear axle output shaft subassembly, shift fork subassembly and box subassembly, its characterized in that: the input shaft assembly comprises a conversion shaft (7), a low-speed gear (6), a first sliding sleeve (8) and a high-speed gear (9) are arranged on the conversion shaft (7), a shaft sleeve (5) is arranged at one end of the conversion shaft (7), an inner core of a first bearing (11) is arranged at the other end of the conversion shaft (7), the connection shaft gear assembly comprises a connection shaft (15) and a gear set (16), the gear set (16) is arranged on the connection shaft (15), a first gasket (14) is further arranged on the connection shaft (15), an inner core of a second bearing (13) and an inner core of a third bearing (17) are respectively arranged at two ends of the connection shaft (15), the front axle output shaft assembly comprises a front axle output shaft (20), a needle bearing (27), a second sliding sleeve (26), a front axle output gear (28) and a third gasket (29) are respectively arranged at two ends of the front axle output shaft (20), an inner core of a fourth bearing (25) and an inner core of a fifth bearing (30) are respectively arranged at two ends of the front axle output shaft (20), the rear axle output shaft assembly comprises a rear axle output shaft (34), an inner core of a fourth bearing (34) and an inner core of a seventh bearing (37) are respectively arranged at two ends of the rear axle output shaft (34) and a sixth bearing (37) are respectively arranged at the rear axle output shaft (34), the shifting fork assembly is provided with two groups of sliding sleeves (8) and (26) which correspond to the first sliding sleeve and the second sliding sleeve respectively, the shifting fork assembly comprises a shifting fork shaft (48), a fastening screw (49) and a shifting fork (50), the shifting fork (50) is fixedly installed with the shifting fork shaft (48) through the fastening screw (49), the box assembly comprises a lower shell (4), an upper cover (10) is installed on the outer side of the lower shell (4), and the shaft gear assembly, the front axle output shaft assembly, the rear axle output shaft assembly and the shifting fork assembly are all installed in the lower shell (4) and the upper cover (10).

2. The small eight speed gearbox two-drive four-drive transfer case assembly of claim 1, wherein: the lower shell (4) is provided with a first oil seal (3) corresponding to the end part of the conversion shaft (7), the transmission main shaft (1) is connected in the conversion shaft (7), the outer side of the transmission main shaft (1) is provided with a bearing (2), the lower shell (4) is provided with a front axle oil seal cover (24) and a second oil seal (23) corresponding to the penetrating part of the front axle output shaft (20), the lower shell (4) is internally provided with a bearing mounting hole, the bearing mounting hole is internally provided with an outer ring of the second bearing (13), an outer ring of the fourth bearing (25) and an outer ring of the seventh bearing (33), the lower shell (4) is provided with an air chamber plug cover (32) corresponding to the end part of the shifting fork shaft (48), the upper cover (10) is internally provided with a bearing mounting hole, and the outer ring of the first bearing (11), the outer ring of the third bearing (17), the outer ring of the fifth bearing (30) and the outer ring of the sixth bearing (37) are also arranged in the bearing mounting hole.

3. The small eight speed gearbox two-drive four-drive transfer case assembly of claim 1, wherein: the upper cover (10) corresponds conversion axle (7), connecting axle (15) and front axle output shaft (20) department still installs input shaft end cover (12), connecting axle end cover (18) and front axle output shaft end cover (31) respectively, and rear axle oil closing cap (40) and third oil blanket (41) are still installed to upper cover (10) department that corresponds rear axle output shaft (34), still install mileage tooth spacer (38) and mileage tooth (39) on rear axle output shaft (34), and second flange (42) are still installed to the tip of rear axle output shaft (34), are equipped with fifth gasket (43) in second flange (42), threaded connection has second nut (44) on rear axle output shaft (34).

4. The small eight speed gearbox two-drive four-drive transfer case assembly of claim 1, wherein: the upper cover (10) is provided with an air chamber component corresponding to the end part of the shifting fork shaft (48), the air chamber component comprises an air chamber shell (47), the air chamber shell (47) is arranged on the upper cover (10), a piston (46) is arranged in the air chamber shell (47), the piston (46) penetrates through the shifting fork shaft (48), the air chamber shell (47) is also provided with an air chamber cover (45), the air chamber cover (45) is penetrated with a bolt (51), and the air chamber cover (45) is fixedly arranged with the air chamber shell (47) through the bolt (51).

5. The small eight speed gearbox two-drive four-drive transfer case assembly of claim 1, wherein: the front axle output shaft (20) is further provided with a first flange (22), a second gasket (21) is arranged in the first flange (22), and the front axle output shaft (20) is provided with a first nut (19).