CN213744742U - Gearbox and vehicle - Google Patents

Abstract

The utility model provides a gearbox and vehicle, wherein the gearbox includes: the shell assembly comprises a first shell and a second shell, and the first shell is buckled with the second shell; the middle shaft assembly is arranged in the first shell and comprises a middle shaft; get power subassembly, get power subassembly and include the power of getting, the one end of power of getting is connected with the jackshaft, and the other end is connected with the second casing to towards the outside of shell subassembly. The utility model provides a gearbox, jackshaft setting are in first casing, and the one end of power takeoff shaft is connected in the jackshaft, and the other end is towards the shell subassembly outside for at least partial power takeoff shaft setting has reduced the shared space of power takeoff shaft in the shell subassembly, is favorable to the gearbox miniaturization. Can support the power take-off shaft through the second casing, can increase the output torque of power take-off shaft, simplify the structure of gearbox and further reduced the required occupation space of gearbox.

Description

Gearbox and vehicle

Technical Field

The utility model relates to a vehicle equipment technical field particularly, relates to a gearbox and vehicle.

Background

The transmission is an important component of a vehicle for adjusting the speed of the vehicle, and in order to output power to external equipment in the related art, a power takeoff is generally arranged on the transmission and comprises a power takeoff shaft and a transmission gear, wherein the power takeoff shaft is meshed with a gear of a middle shaft of the transmission through the transmission gear. Need fix a position drive gear and still need support and fix the power take-off axle simultaneously in the power take-off axle installation, lead to the shared space of gearbox big, be unfavorable for the gearbox miniaturization.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

To this end, a first aspect of the present invention provides a transmission.

A second aspect of the present invention provides a vehicle.

In view of this, the utility model discloses the first aspect provides a gearbox, include: the shell assembly comprises a first shell and a second shell, and the first shell is buckled with the second shell; the middle shaft assembly is arranged in the first shell and comprises a middle shaft; get power subassembly, get power subassembly and include the power of getting, the one end of power of getting is connected with the jackshaft, and the other end is connected with the second casing to towards the outside of shell subassembly.

The utility model provides a gearbox, in the course of the work, the one end of the power take-off shaft of power take-off subassembly is directly connected with the jackshaft, and the power take-off shaft need not to be connected through the gear with the jackshaft, rotates through the jackshaft and can drive the power take-off shaft and rotate, and the other end of power take-off shaft is connected with the second casing to towards the outside of shell subassembly, can be with power take-off to external equipment.

The utility model provides a gearbox, jackshaft setting are in first casing, and the one end of power takeoff shaft is connected in the jackshaft, and the other end is towards the shell subassembly outside for at least partial power takeoff shaft setting has reduced the shared space of power takeoff shaft in the shell subassembly, is favorable to the gearbox miniaturization.

The utility model provides a gearbox, the other end of power takeoff shaft is connected with the second casing. Can support the power take-off shaft through the second casing, can make the power take-off shaft more firm, can increase the output torque of power take-off shaft, can reduce locating component's the quantity that sets up, the structure of having simplified the gearbox has reduced the required occupation space of gearbox further.

The utility model provides a gearbox, jackshaft setting are in first casing, and the other end of power takeoff shaft is towards the outside of shell subassembly, replace the technical scheme that the power takeoff shaft passes through gear meshing in the jackshaft among the prior art for the axial of power takeoff shaft is unanimous with the axis of gearbox output shaft, be convenient for with external equipment's being connected.

Additionally, the utility model provides an among the above-mentioned technical scheme gearbox can also have following additional technical characterstic:

in above-mentioned technical scheme, further, the jackshaft includes jackshaft body and mounting hole, and the mounting hole sets up in the tip of jackshaft body, and the one end of power take-off shaft is inserted and is located the mounting hole.

In this technical scheme, further provide the connection structure between jackshaft and the power take-off shaft, set up the mounting hole at the tip of jackshaft body, the one end of power take-off shaft is inserted and is established and can realize being connected of jackshaft and power take-off shaft in the mounting hole, the installation and the fixing of the power take-off shaft of being convenient for.

In any one of the above technical solutions, further, the intermediate shaft further includes a first spline, and the first spline is disposed on an inner wall of the mounting hole; the power take-off shaft comprises a power take-off shaft body and a second spline, the second spline is arranged at one end of the power take-off shaft body, and the first spline is matched with the second spline.

Among this technical scheme, further set up first spline on the jackshaft, further set up the second spline on the power takeoff axle body, when the power takeoff coupling in jackshaft, first spline can lock jackshaft and power takeoff axle with second spline looks adaptation for the jackshaft is more reliable with being connected of power takeoff axle, the power safety of being convenient for, steady output.

In any of the above technical solutions, further, the second housing is provided with a bearing chamber; the power take-off component also comprises a bearing, and the bearing is sleeved at the other end of the power take-off shaft body and embedded in the bearing chamber.

In this technical scheme, set up the bearing room on the second casing, the bearing room is gone up to inlay and is equipped with the bearing, and the bearing housing is established on the power take-off shaft body, can play the effect of firm support power take-off shaft body through the setting of bearing room and bearing for the power take-off shaft body can rotate for the second casing, the power safety of being convenient for, steady output.

In any one of the above technical solutions, further, the power take-off assembly further includes: the power takeoff, the one end of power takeoff is connected with the other end of power takeoff shaft, and the other end of power takeoff is used for providing power for external equipment.

In this technical scheme, power takeoff assembly has further included the power takeoff, is convenient for carry the power to external equipment through the setting of power takeoff. Because the setting of jackshaft subassembly is in first casing, and power takeoff shaft one end is connected in the jackshaft, and the other end is towards the second casing for the jackshaft is unanimous with the axis direction of power takeoff shaft, makes the power takeoff can install the one end at the second casing, and the installation and the fixing of the power takeoff of being convenient for, the power takeoff of being convenient for simultaneously carries power to external equipment.

In any one of the above technical solutions, further, the intermediate shaft is provided with reverse gear teeth, and the transmission further includes: the reverse gear steering wheel is meshed with the reverse gear teeth; the main box output shaft assembly comprises a main box output shaft, a first bearing assembly, an output gear assembly and an outer gear ring, the first bearing assembly is sleeved on the main box output shaft, the output gear assembly is sleeved on the first bearing assembly, and an inner ring of the outer gear ring is provided with a spline and matched with the main box output shaft; the output gear assembly comprises a reverse gear, and the reverse gear is meshed with the reverse gear steering wheel; the reverse gear is provided with engaging teeth which can be matched with the teeth of the external gear ring.

In this solution, the gearbox further comprises: the output gear in the output gear assembly can rotate relative to the output shaft of the main box, the transmission gear on the intermediate shaft can drive the output gear to rotate, and when a joint sleeve of the synchronizer is meshed with joint teeth of the output gear, the output gear drives the output shaft of the main box to rotate through the synchronizer.

When the intermediate shaft rotates, the reverse gear steering wheel can rotate under the drive of the reverse gear, the reverse gear steering wheel is also meshed with the reverse gear, the reverse gear steering wheel can drive the reverse gear to rotate, when the outer gear ring is separated from the reverse gear, the reverse gear can rotate relative to the main box output shaft, because the spline of the inner ring of the outer gear ring is matched with the main box output shaft, the outer gear ring can synchronously rotate with the main box output shaft, when the vehicle needs to go in reverse gear, the outer gear ring is meshed with the engaging teeth of the reverse gear, the reverse gear drives the main box output shaft to rotate through the outer gear ring, the reverse gear steering wheel is arranged between the reverse gear and the reverse gear, the reverse gear steering function can be realized by the reverse gear steering wheel, the reverse gear is opposite to the steering of other output gears, the reverse gear can drive the main box output shaft to reversely rotate through the outer gear ring, and the function of the vehicle in reverse gear running is realized.

It can be understood that the reverse gear has the effect of realizing that the main box output shaft runs at low rotating speed and high torque, and because the rotating speed of the reverse gear is low, the inner gear ring can be directly separated from and meshed with the engaging teeth of the reverse gear, a synchronizer matched with the reverse gear is not required to be arranged on the main box output shaft, the inner gear ring is used for replacing the synchronizer, the number of parts in the gearbox is effectively reduced, the internal structure of the gearbox is simplified, the structure in the gearbox is more compact, and the miniaturization of the gearbox is favorably realized.

Specifically, the engaging teeth are helical teeth, the teeth of the outer gear ring are helical teeth, and the engaging teeth are matched with the teeth of the outer gear ring. In this design, because the skewed tooth has the advantage that meshing performance is good and the contact ratio is big, set up the tooth of joint tooth and outer ring gear into the skewed tooth and improve the cooperation stability of reversing gear and outer ring gear in this application, improved the bearing capacity who improves reversing gear and outer ring gear, the life of extension reversing gear and outer ring gear, under the user demand of heavy load, reversing gear also can drive outer ring gear and rotate steadily.

The load borne by the outer gear ring is radial force on one hand and axial force on the other hand, and due to the existence of axial component force, the radial force borne by the outer gear ring can be reduced, the damage rate of the outer gear ring is reduced, the stable operation of a transmission part in the gearbox is ensured, and the maintenance rate of the gearbox is reduced.

In any of the above technical solutions, further, the transmission further includes: the input shaft assembly comprises an input shaft, a second bearing, a constant-meshing input gear and a first synchronizer, the first synchronizer is sleeved on the input shaft, the second bearing is sleeved on the input shaft, and the constant-meshing input gear is sleeved on the second bearing and positioned on one side of the first synchronizer; the jackshaft subassembly includes constant mesh drive gear, and constant mesh drive gear cover is located on the jackshaft, meshes with constant mesh input gear mutually.

In the technical scheme, a second bearing is sleeved on an input shaft, a normally meshed input gear is sleeved on the second bearing, so that the normally meshed input gear can rotate relative to the input shaft, namely when the input shaft rotates, the normally meshed input gear cannot rotate synchronously with the input shaft, a normally meshed transmission gear is sleeved on an intermediate shaft and meshed with the normally meshed input gear, it can be understood that the normally meshed transmission gear can rotate synchronously with the intermediate shaft, when a synchronizer is separated from the normally meshed input gear, the input shaft cannot drive the normally meshed input gear to rotate, a first synchronizer is sleeved on the input shaft and rotates synchronously with the input shaft, when a vehicle needs to shift gears, a joint sleeve of the first synchronizer moves towards one side of the normally meshed input gear, after the joint sleeve of the first synchronizer is meshed with joint teeth of the normally meshed input gear, first synchronizer drives constant mesh input gear and input shaft synchronous rotation, constant mesh input gear drives constant mesh drive gear and rotates, constant mesh drive gear can drive the jackshaft and rotate, thereby realize the power transmission of input shaft to jackshaft, the cooperation of the last transmission gear subassembly of jackshaft and the last output gear subassembly of main case output shaft, thereby realize the power take off of main case output shaft, the drive gear of different positions is different with the drive ratio that corresponding output gear has among the transmission gear subassembly, thereby can make main case output shaft rotate and realize different moment of torsion output with different rotational speeds through the gear train cooperation of difference.

In any of the above technical solutions, further, the output gear assembly further includes a first output gear located on the other side of the first synchronizer; the intermediate shaft component also comprises a first transmission gear which is sleeved on the intermediate shaft and is meshed with the first output gear; the output gear assembly further comprises a second output gear, the main box output shaft assembly further comprises a second synchronizer, and the second synchronizer is sleeved on the main box output shaft and is positioned between the first output gear and the second output gear; the middle shaft assembly further comprises a second transmission gear, and the second transmission gear is sleeved on the middle shaft and meshed with the second output gear; the output gear assembly further comprises a third output gear and a fourth output gear, the main box output shaft assembly further comprises a third synchronizer, and the third synchronizer is sleeved on the main box output shaft and is positioned between the third output gear and the fourth output gear; the intermediate shaft is also provided with third teeth, the third teeth are meshed with a third output gear, and the reverse gear teeth are meshed with a fourth output gear.

In the technical scheme, a first transmission gear is sleeved on an intermediate shaft, the first transmission gear can synchronously rotate with the intermediate shaft, a first output gear can rotate relative to an output shaft of a main box, a joint sleeve of a first synchronizer moves towards one side of the first output gear, after the joint sleeve of the first synchronizer is meshed with joint teeth of the first output gear, the first output gear can synchronously rotate with an input shaft, the first output gear drives the first transmission gear to rotate, the first transmission gear drives the intermediate shaft to rotate, and therefore power transmission from the input shaft to the intermediate shaft is realized, the first synchronizer moves to enable a pair of gear sets of a normally meshed input gear and a normally meshed transmission gear or a pair of gear sets of the first output gear and the first transmission gear to realize power transmission from the input shaft to the intermediate shaft, it can be understood that the transmission ratios of the two gear sets are different, when the first synchronizer is engaged with the engaging teeth of the constant mesh input gear or the engaging teeth of the first output gear, the rotation of the intermediate shaft at different rotational speeds can be realized.

The constant mesh input gear drives the constant mesh transmission gear and rotates, and makes the transmission gear on the jackshaft drive the output gear rotation on the main tank output shaft, and this is the first set of gearshift in this application.

First output gear drives first transmission gear and rotates, and makes the epaxial first output gear drive first transmission gear and rotate, this is the second set gearshift in this application, sets up two pairs of gear sets between input shaft and countershaft, has increased the gearbox and has kept off the position, makes the drive ratio scope of gearbox wider, satisfies the user demand of driver when different road conditions, and satisfies the demand of different drivers to the dynamic property of gearbox, fuel economy and purchase car cost.

In the technical scheme, the second output gear is sleeved on the first bearing assembly, so that the second output gear can rotate relative to the main box output shaft.

When the joint sleeve of the first synchronizer is meshed with the joint teeth of the normally meshed input gear, the normally meshed input gear drives the normally meshed transmission gear to rotate, the normally meshed transmission gear drives the intermediate shaft to rotate, the intermediate shaft drives the second transmission gear to rotate, when the joint sleeve of the second synchronizer moves towards the direction of the second output gear and is meshed with the joint teeth of the second output gear, the second output gear can synchronously rotate with the output shaft of the main box, the second transmission gear drives the second output gear to rotate, the second output gear drives the output shaft of the main box to rotate, and therefore power output of the output shaft of the main box can be achieved.

When the joint sleeve of the first synchronizer is meshed with the joint teeth of the first output gear, the first output gear drives the first transmission gear to rotate, the first transmission gear drives the intermediate shaft to rotate, the intermediate shaft drives the second transmission gear to rotate, when the joint sleeve of the second synchronizer moves towards the direction of the second output gear and is meshed with the joint teeth of the second output gear, the second output gear can synchronously rotate with the output shaft of the main box, the second transmission gear drives the second output gear to rotate, the second output gear drives the output shaft of the main box to rotate, so that the output shaft of the main box can realize power output, when the joint sleeve of the first synchronizer is respectively meshed with the joint teeth of the normally meshed input gear or the joint teeth of the first output gear, the output shaft of the main box can rotate at different rotating speeds, and the transmission ratio range of the gearbox is enlarged.

In addition, when the joint sleeve of the first synchronizer is meshed with the joint teeth of the normally meshed input gear and the joint sleeve of the second synchronizer is meshed with the joint teeth of the first output gear, the normally meshed input gear drives the normally meshed transmission gear to rotate, the normally meshed transmission gear drives the intermediate shaft to rotate, the intermediate shaft drives the first transmission gear to rotate, the first transmission gear drives the first output gear to rotate, and the first output gear drives the main box output shaft to rotate, so that the main box output shaft can realize power output.

The joint sleeve of the first synchronizer is meshed with the joint teeth of the first output gear, and the joint sleeve of the second synchronizer is also meshed with the joint teeth of the first output gear, at the moment, power transmission is not needed through the intermediate shaft, the input shaft drives the first synchronizer to rotate, the first synchronizer drives the first output gear to rotate, the first output gear drives the main box output shaft to rotate through the second synchronizer, power transmission is achieved through the main box output shaft, the transmission ratio range of the gearbox is further enlarged, and the driving requirements of a driver in different road conditions are met.

In this technical scheme, the third synchronizer cover is located on the main tank output shaft for the third synchronizer can rotate with main tank output shaft synchronization, and third output gear and fourth output gear can rotate with the main tank output shaft relatively, and when the jackshaft rotated, the third tooth drove the rotation of third output gear, and the reverse gear tooth drove the rotation of fourth output gear.

When the third synchronizer moves towards the direction of the third output gear and a joint sleeve of the third synchronizer is meshed with joint teeth of the third output gear, the third output gear drives a main box output shaft to rotate through the third synchronizer, so that the main box output shaft can realize power output, and when the third synchronizer moves towards the direction of the fourth output gear and the joint sleeve of the third synchronizer is meshed with the joint teeth of the fourth output gear, the fourth output gear drives the main box output shaft to rotate through the third synchronizer, so that the main box output shaft can realize power output.

It can be understood that, along with the fender position increase, the drive ratio of drive gear and output gear reduces, under the condition that the axle center position of jackshaft and main case output shaft keeps unchangeable, if set up the great drive gear of diameter of tooth between jackshaft and main case output shaft, just need reduce the diameter of jackshaft, cause the jackshaft rigidity to reduce easily and the condition emergence of appearing the deformation damage easily, through machine-shaping third tooth and reverse gear tooth on the axis body of jackshaft in this application, thereby need not set up the high fender position drive gear of cover locating the jackshaft in the relevant position of high fender position output gear, need not reduce the diameter of jackshaft, guarantee that the jackshaft has higher rigidity, make the jackshaft be difficult for appearing warping, improve the life of jackshaft, guarantee jackshaft and main case output shaft on the cooperation precision of drive disk assembly.

In any of the above technical solutions, further, the transmission further includes: the planetary gear assembly comprises a planet carrier, a plurality of planet gears and an inner gear ring, wherein the planet gears are arranged on the planet carrier and are meshed with the inner gear ring; one end of the output shaft of the main box is provided with an output tooth, and the output tooth is meshed with the plurality of planet wheels; the auxiliary box output shaft assembly comprises an auxiliary box output shaft, a fourth synchronizer, a first engaging tooth and a second engaging tooth, the auxiliary box output shaft is connected with the planet carrier, the first engaging tooth is connected with the first shell, the second engaging tooth is sleeved on the auxiliary box output shaft, and a spline hub of the fourth synchronizer is connected with the inner gear ring and is positioned between the first engaging tooth and the second engaging tooth.

In this technical scheme, when main case output shaft rotated, output tooth drove a plurality of planet wheels and rotates, and a plurality of planet wheels drive the ring gear and rotate.

When the joint sleeve of the fourth synchronizer moves towards the direction of the first joint tooth and is meshed with the first joint tooth, the first joint tooth limits the joint sleeve of the fourth synchronizer to rotate, namely the joint sleeve of the fourth synchronizer is not easy to rotate relative to the first shell, and further a spline hub of the fourth synchronizer cannot rotate.

When the joint sleeve of the fourth synchronizer moves towards the direction of the second joint tooth and is meshed with the second joint tooth, the inner gear ring drives the spline hub of the fourth synchronizer to rotate, and the spline hub of the fourth synchronizer drives the joint sleeve of the fourth synchronizer to rotate, so that the joint sleeve of the second synchronizer can drive the auxiliary box output shaft to rotate, and power transmission from the main box output shaft to the auxiliary box output shaft and power output from the auxiliary box output shaft are realized.

When the clutch collar of fourth synchronous ware meshes with first joint tooth or second joint tooth respectively, the auxiliary box output shaft can rotate and output different moments of torsion with different rotational speeds, has realized in this application on the basis of two sets of functions of shifting gears, and every set of gearshift can also cooperate with planetary gear assembly and auxiliary box output shaft subassembly respectively, further increases the fender position quantity of gearbox to the drive ratio scope of increase gearbox.

According to the utility model discloses a second aspect provides a vehicle, includes the gearbox as above-mentioned any one technical scheme.

In this technical scheme, because of the vehicle includes the gearbox in any one above-mentioned technical scheme, consequently the utility model provides a vehicle has the whole benefits of the gearbox that provides in any one above-mentioned technical scheme.

In particular, the vehicle further comprises an external device, which is connected to the power take-off shaft, which external device is connected to the power take-off in case the gearbox comprises a power take-off, which external device comprises a lift pump.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural view of a gearbox according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

wherein, the correspondence between the reference numbers and the part names of fig. 1 and fig. 2 is:

1 first shell, 2 second shell, 3 middle shaft, 4 power take-off shaft, 5 mounting hole, 6 first spline, 8 bearing chamber, 9 bearing, 10 power take-off, 11 middle shaft body, 12 reverse gear, 13 reverse steering wheel, 14 reverse gear, 15 input shaft, 16 constant mesh input gear, 17 first synchronizer, 18 constant mesh transmission gear, 19 first output gear, 20 first transmission gear, 21 second output gear, 22 second synchronizer, 23 second transmission gear, 24 third output gear, 25 fourth output gear, 26 third synchronizer, 27 third gear, 29 planet carrier, 30 planet gear, 31 internal gear, 32 output gear, 33 auxiliary box output shaft, 34 fourth synchronizer, 35 external gear ring.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The gearbox and vehicle according to some embodiments of the present invention are described below with reference to fig. 1-2.

An embodiment of the first aspect of the present invention provides a transmission, including: the power take-off assembly comprises a shell assembly, a middle shaft assembly and a power take-off assembly.

The shell assembly comprises a first shell 1 and a second shell 2, and the first shell 1 is buckled with the second shell 2; the middle shaft assembly is arranged in the first shell 1 and comprises a middle shaft 3; the power take-off component comprises a power take-off shaft 4, one end of the power take-off shaft 4 is connected with the intermediate shaft 3, and the other end of the power take-off shaft is connected with the second shell 2 and faces the outer side of the shell component.

The utility model provides a gearbox, in the course of the work, the one end of power take-off shaft 4 of power take-off subassembly directly is connected with jackshaft 3, and power take-off shaft 4 need not to be connected through the gear with jackshaft 3, rotates through jackshaft 3 and can drive power take-off shaft 4 and rotate, and the other end of power take-off shaft 4 is connected with second casing 2 to towards the outside of shell subassembly, can be with power take-off to external equipment.

The utility model provides a gearbox, jackshaft 3 set up in first casing 1, and the one end of power takeoff shaft 4 is connected in jackshaft 3, and the other end is towards the shell subassembly outside for at least partial power takeoff shaft 4 sets up and has reduced the shared space of power takeoff shaft 4 in the shell subassembly, is favorable to the gearbox miniaturization.

The utility model provides a gearbox, the other end of power take-off shaft 4 is connected with second casing 2. Can support power take-off shaft 4 through second casing 2, can make power take-off shaft 4 more firm, can increase power take-off shaft 4's output torque, can reduce locating component's the quantity that sets up, the structure of having simplified the gearbox has reduced the required occupation space of gearbox further.

The utility model provides a gearbox, jackshaft 3 set up in first casing 1, and the other end of power takeoff 4 is towards the outside of shell subassembly, replaces among the prior art power takeoff 4 to pass through the technical scheme of gear meshing in jackshaft 3 for the axial of power takeoff 4 is unanimous with the axis of gearbox output shaft, is convenient for be connected with external equipment.

As shown in fig. 1 and 2, in the above embodiment, further, the intermediate shaft 3 includes an intermediate shaft body 11 and a mounting hole 5, the mounting hole 5 is provided at an end portion of the intermediate shaft body 11, and one end of the power take-off shaft 4 is inserted into the mounting hole 5.

In this embodiment, a connection structure between the intermediate shaft 3 and the power take-off shaft 4 is further provided, the end portion of the intermediate shaft body 11 is provided with the mounting hole 5, and the connection between the intermediate shaft 3 and the power take-off shaft 4 can be realized by inserting one end of the power take-off shaft 4 into the mounting hole 5, so that the power take-off shaft 4 can be mounted and fixed conveniently.

As shown in fig. 1 and 2, in the above embodiment, further, the intermediate shaft 3 further includes the first spline 6, and the first spline 6 is disposed on the inner wall of the mounting hole 5; the power take-off shaft 4 comprises a power take-off shaft body and a second spline, the second spline is arranged at one end of the power take-off shaft body, and the first spline 6 is matched with the second spline.

In this embodiment, further set up first spline 6 on the jackshaft 3, further set up the second spline on the power take-off shaft body, when power take-off shaft 4 connects in jackshaft 3, first spline 6 can lock jackshaft 3 and power take-off shaft 4 with second spline looks adaptation for jackshaft 3 is more reliable with being connected of power take-off shaft 4, the power safety of being convenient for, steady output.

As shown in fig. 1 and 2, in the above embodiment, further, the second housing 2 is provided with the bearing chamber 8; the power take-off component further comprises a bearing 9, and the bearing 9 is sleeved at the other end of the power take-off shaft body and embedded in the bearing chamber 8.

In this embodiment, set up bearing room 8 on the second casing 2, inlay on the bearing room 8 and be equipped with bearing 9, bearing 9 cover is established on the power take-off axle body, can play the effect of firm support power take-off axle body through the setting of bearing room 8 and bearing 9 for the power take-off axle body can rotate for second casing 2, the power safety of being convenient for, steady output.

As shown in fig. 1 and fig. 2, in the above embodiment, further, the power take-off assembly further includes: and one end of the power takeoff 10 is connected with the other end of the power takeoff shaft 4, and the other end of the power takeoff 10 is used for providing power for external equipment.

In this embodiment, the power take-off assembly further comprises a power take-off 10, the power take-off 10 being arranged to facilitate power delivery to an external device. Because the setting of jackshaft subassembly is in first casing 1, 4 one ends of power takeoff shaft are connected in jackshaft 3, and the other end is towards second casing 2 for jackshaft 3 is unanimous with the axis direction of power takeoff shaft 4, makes power takeoff 10 can install the one end at second casing 2, and the installation and the fixing of the power takeoff 10 of being convenient for, the power takeoff 10 of being convenient for simultaneously carries power to external equipment.

As shown in fig. 1 and 2, in the above embodiment, further, the intermediate shaft 3 is provided with reverse gear teeth 12, and the transmission further includes: reverse steering wheel 13 and main box output shaft assembly.

Wherein, the reverse gear steering wheel 13 is meshed with the reverse gear teeth 12; the main box output shaft assembly comprises a main box output shaft, a first bearing assembly, an output gear assembly and an outer gear ring 35, the first bearing assembly is sleeved on the main box output shaft, the output gear assembly is sleeved on the first bearing assembly, and an inner ring of the outer gear ring 35 is provided with a spline and matched with the main box output shaft; the output gear assembly comprises a reverse gear 14, and the reverse gear 14 is meshed with the reverse gear steering wheel 13; the reverse gear 14 is provided with engaging teeth which cooperate with the teeth of the external gear ring 35.

In this embodiment, the transmission further comprises: the output gear in the output gear assembly can rotate relative to the output shaft of the main box, the transmission gear on the intermediate shaft 3 can drive the output gear to rotate, and when the engaging sleeve of the synchronizer is meshed with the engaging teeth of the output gear, the output gear drives the output shaft of the main box to rotate through the synchronizer.

When the intermediate shaft 3 rotates, the reverse gear steering wheel 13 can rotate under the driving of the reverse gear teeth 12, the reverse gear steering wheel 13 is also meshed with the reverse gear 14, so that the reverse gear steering wheel 13 can drive the reverse gear 14 to rotate, when the outer gear ring 35 is separated from the reverse gear 14, the reverse gear 14 can rotate relative to the main box output shaft, due to the fact that the spline of the inner ring of the outer gear ring 35 is matched with the main box output shaft, the outer gear ring 35 can rotate synchronously with the main box output shaft, when a vehicle needs to go in reverse gear, the outer gear ring 35 is meshed with the joint teeth of the reverse gear 14, the reverse gear 14 drives the main box output shaft to rotate through the outer gear ring 35, the reverse gear steering wheel 13 is arranged between the reverse gear teeth 12 and the reverse gear 14, the reverse gear steering function can be realized by the reverse gear steering wheel 13, the reverse gear 14 is opposite to the steering of other output gears, and the reverse gear 14 can drive the main box output shaft to rotate reversely through the outer gear ring 35, the function of vehicle reverse gear advancing is realized.

It can be understood that the reverse gear has the effect of realizing that the main box output shaft runs at a low rotating speed and a high torque, and because the rotating speed of the reverse gear 14 is low, the inner gear ring 31 can be directly separated from and meshed with the engaging teeth of the reverse gear 14, a synchronizer matched with the reverse gear 14 is not required to be arranged on the main box output shaft, the inner gear ring 31 is used for replacing the synchronizer, the number of parts in the gearbox is effectively reduced, the internal structure of the gearbox is simplified, the structure in the gearbox is more compact, and the miniaturization of the gearbox is favorably realized.

Specifically, the engaging teeth are helical teeth, and the teeth of the outer ring gear 35 are helical teeth, and the engaging teeth are matched with the teeth of the outer ring gear 35. In this design, because the skewed tooth has the advantage that meshing performance is good and the contact ratio is big, set up the tooth of joint tooth and outer ring gear 35 into the skewed tooth and improve reverse gear 14 and outer ring gear 35's cooperation stability in this application, improved the bearing capacity who improves reverse gear 14 and outer ring gear 35, the life of extension reverse gear 14 and outer ring gear 35, under the user demand of heavily loaded, reverse gear 14 also can drive outer ring gear 35 and rotate steadily.

The load borne by the outer gear ring 35 is radial force on one hand and axial force on the other hand, and due to the existence of axial component force, the radial force borne by the outer gear ring 35 can be reduced, the damage rate of the outer gear ring 35 is reduced, the stable operation of a transmission part in the gearbox is ensured, and the maintenance rate of the gearbox is reduced.

As shown in fig. 1 and 2, in the above embodiment, further, the transmission further includes: the input shaft 15 assembly, the input shaft 15 assembly includes the input shaft 15, the second bearing 9, the constant mesh input gear 16 and the first synchronizer 17, the first synchronizer 17 is set up on the input shaft 15, the second bearing 9 is set up on the input shaft 15, the constant mesh input gear 16 is set up on the second bearing 9, locate at one side of the first synchronizer 17; the intermediate shaft component comprises a constant mesh transmission gear 18, and the constant mesh transmission gear 18 is sleeved on the intermediate shaft 3 and is meshed with the constant mesh input gear 16.

In this embodiment, the second bearing 9 is sleeved on the input shaft 15, the normally meshed input gear 16 is sleeved on the second bearing 9, so that the normally meshed input gear 16 can rotate relative to the input shaft 15, that is, when the input shaft 15 rotates, the normally meshed input gear 16 does not rotate synchronously with the input shaft 15, the normally meshed transmission gear 18 is sleeved on the intermediate shaft 3, the normally meshed transmission gear 18 is meshed with the normally meshed input gear 16, it can be understood that the normally meshed transmission gear 18 can rotate synchronously with the intermediate shaft 3, when the synchronizer is separated from the normally meshed input gear 16, the input shaft 15 cannot drive the normally meshed input gear 16 to rotate, the first synchronizer 17 is sleeved on the input shaft 15, and the first synchronizer 17 rotates synchronously with the input shaft 15, when the vehicle needs to shift gears, the joint sleeve of the first synchronizer 17 moves towards one side of the normally meshed input gear 16, after the engaging sleeve of the first synchronizer 17 is engaged with the engaging teeth of the normally engaged input gear 16, the first synchronizer 17 drives the normally engaged input gear 16 to synchronously rotate with the input shaft 15, the normally engaged input gear 16 drives the normally engaged transmission gear 18 to rotate, the normally engaged transmission gear 18 can drive the intermediate shaft 3 to rotate, thereby realizing the power transmission from the input shaft 15 to the intermediate shaft 3, the transmission gear assembly on the intermediate shaft 3 is matched with the output gear assembly on the main box output shaft, thereby realizing the power output of the main box output shaft, the transmission gears at different positions in the transmission gear assembly have different transmission ratios with the corresponding output gears, thereby being capable of enabling the main box output shaft to rotate at different rotating speeds and realizing different torque outputs through different gear set matching.

As shown in fig. 1 and 2, in the above embodiment, further, the output gear assembly further includes a first output gear 19, and the first output gear 19 is located on the other side of the first synchronizer 17; the intermediate shaft component also comprises a first transmission gear 20, and the first transmission gear 20 is sleeved on the intermediate shaft 3 and meshed with the first output gear 19; the output gear assembly further comprises a second output gear 21, the main box output shaft assembly further comprises a second synchronizer 22, and the second synchronizer 22 is sleeved on the main box output shaft and is positioned between the first output gear 19 and the second output gear 21; the middle shaft assembly further comprises a second transmission gear 23, and the second transmission gear 23 is sleeved on the middle shaft 3 and meshed with the second output gear 21; the output gear assembly further comprises a third output gear 24 and a fourth output gear 25, the main box output shaft assembly further comprises a third synchronizer 26, and the third synchronizer 26 is sleeved on the main box output shaft and is positioned between the third output gear 24 and the fourth output gear 25; the intermediate shaft 3 is also provided with third teeth 27, the third teeth 27 meshing with the third output gear 24 and the reverse gear teeth 12 meshing with the fourth output gear 25.

In this embodiment, the first transmission gear 20 is sleeved on the intermediate shaft 3, the first transmission gear 20 can rotate synchronously with the intermediate shaft 3, the first output gear 19 can rotate relatively with the main box output shaft, the joint sleeve of the first synchronizer 17 moves towards one side of the first output gear 19, after the joint sleeve of the first synchronizer 17 is meshed with the joint teeth of the first output gear 19, the first output gear 19 can rotate synchronously with the input shaft 15, the first output gear 19 drives the first transmission gear 20 to rotate, the first transmission gear 20 drives the intermediate shaft 3 to rotate, so as to realize power transmission from the input shaft 15 to the intermediate shaft 3, the first synchronizer 17 in this application moves to enable the pair of gear sets of the normally meshed input gear 16 and the normally meshed transmission gear 18 or the pair of gear sets of the first output gear 19 and the first transmission gear 20 to realize power transmission from the input shaft 15 to the intermediate shaft 3, it will be appreciated that the gear ratios of the two pairs of gear sets are different, enabling the intermediate shaft 3 to rotate at different speeds when the first synchronizer 17 is engaged with the engaged teeth of the constantly meshing input gear 16 or the engaged teeth of the first output gear 19.

The constant mesh input gear 16 drives the constant mesh transmission gear 18 to rotate, so that the transmission gear on the intermediate shaft 3 drives the output gear on the main box output shaft to rotate, which is the first set of gear shifting mechanisms in this application.

First output gear 19 drives first transmission gear 20 and rotates, and make first output gear 19 on the jackshaft 3 drive first transmission gear 20 and rotate, this is the second set gearshift in this application, set up two pairs of gear sets between input shaft 15 and jackshaft 3, increased the gearbox and kept off the position, make the drive ratio scope of gearbox wider, satisfy the user demand of driver when different road conditions, and satisfy the power nature of different drivers to the gearbox, fuel economy and the demand of purchasing the car cost.

In this embodiment, the second output gear 21 is mounted on the first bearing assembly such that the second output gear 21 is rotatable relative to the main tank output shaft.

When the joint sleeve of the first synchronizer 17 is meshed with the joint teeth of the normally meshed input gear 16, the normally meshed input gear 16 drives the normally meshed transmission gear 18 to rotate, the normally meshed transmission gear 18 drives the intermediate shaft 3 to rotate, the intermediate shaft 3 drives the second transmission gear 23 to rotate, when the joint sleeve of the second synchronizer 22 moves towards the direction of the second output gear 21 and is meshed with the joint teeth of the second output gear 21, the second output gear 21 can synchronously rotate with the output shaft of the main box, the second transmission gear 23 drives the second output gear 21 to rotate, and the second output gear 21 drives the output shaft of the main box to rotate, so that the output shaft of the main box can realize power output.

When the engaging sleeve of the first synchronizer 17 is engaged with the engaging teeth of the first output gear 19, the first output gear 19 drives the first transmission gear 20 to rotate, the first transmission gear 20 drives the intermediate shaft 3 to rotate, the intermediate shaft 3 drives the second transmission gear 23 to rotate, the engaging sleeve of the second synchronizer 22 moves towards the direction of the second output gear 21 and is engaged with the engaging teeth of the second output gear 21, the second output gear 21 can synchronously rotate with the output shaft of the main box, the second transmission gear 23 drives the second output gear 21 to rotate, the second output gear 21 drives the output shaft of the main box to rotate, so that the output shaft of the main box can realize power output, when the engaging sleeve of the first synchronizer 17 is engaged with the engaging teeth of the constant mesh input gear 16 or the engaging teeth of the first output gear 19 respectively, the main box output shaft can rotate at different rotating speeds, and the transmission ratio range of the gearbox is enlarged.

In addition, when the engaging sleeve of the first synchronizer 17 is engaged with the engaging teeth of the normally engaged input gear 16 and the engaging sleeve of the second synchronizer 22 is engaged with the engaging teeth of the first output gear 19, the normally engaged input gear 16 drives the normally engaged transmission gear 18 to rotate, the normally engaged transmission gear 18 drives the intermediate shaft 3 to rotate, the intermediate shaft 3 drives the first transmission gear 20 to rotate, the first transmission gear 20 drives the first output gear 19 to rotate, and the first output gear 19 drives the main box output shaft to rotate, so that the main box output shaft can realize power output.

When the engaging sleeve of the first synchronizer 17 is engaged with the engaging teeth of the first output gear 19 and the engaging sleeve of the second synchronizer 22 is also engaged with the engaging teeth of the first output gear 19, at this time, power transmission is not required to be performed through the intermediate shaft 3, the input shaft 15 drives the first synchronizer 17 to rotate, the first synchronizer 17 drives the first output gear 19 to rotate, the first output gear 19 drives the main box output shaft to rotate through the second synchronizer 22, so that the power transmission of the main box output shaft is realized, the transmission ratio range of the gearbox is further enlarged, and the driving requirements of a driver on different road conditions are met.

In this embodiment, the third synchronizer 26 is sleeved on the main box output shaft, so that the third synchronizer 26 can synchronously rotate with the main box output shaft, the third output gear 24 and the fourth output gear 25 can relatively rotate with the main box output shaft, when the intermediate shaft 3 rotates, the third tooth 27 drives the third output gear 24 to rotate, and the reverse gear 12 drives the fourth output gear 25 to rotate.

When the third synchronizer 26 moves towards the direction of the third output gear 24 and the engaging sleeve of the third synchronizer 26 is engaged with the engaging teeth of the third output gear 24, the third output gear 24 drives the main box output shaft to rotate through the third synchronizer 26, so that the main box output shaft can realize power output, and when the third synchronizer 26 moves towards the direction of the fourth output gear 25 and the engaging sleeve of the third synchronizer 26 is engaged with the engaging teeth of the fourth output gear 25, the fourth output gear 25 drives the main box output shaft to rotate through the third synchronizer 26, so that the main box output shaft can realize power output.

It can be understood that, as the gear is increased, the transmission ratio of the transmission gear to the output gear is reduced, and under the condition that the axial center positions of the intermediate shaft 3 and the main box output shaft are kept unchanged, if a transmission gear with larger tooth diameter is arranged between the intermediate shaft 3 and the main box output shaft, the diameter of the intermediate shaft 3 needs to be reduced, the rigidity of the intermediate shaft 3 is easily reduced, and the situation that deformation and damage are easily caused occurs, in the application, by processing and forming the third teeth 27 and the reverse gear teeth 12 on the shaft body of the intermediate shaft 3, thereby avoiding the need of arranging a high-gear transmission gear sleeved on the intermediate shaft 3 at a corresponding position of the high-gear output gear, avoiding the need of reducing the diameter of the intermediate shaft 3, ensuring that the intermediate shaft 3 has higher rigidity, make jackshaft 3 difficult appearance warp, improve jackshaft 3's life, guarantee jackshaft 3 and the cooperation precision of transmission parts on the main tank output shaft.

As shown in fig. 1 and 2, in the above embodiment, further, the transmission further includes: the first casing 1, the planetary gear assembly and the sub-box output shaft assembly.

The planetary gear assembly comprises a planet carrier 29, a plurality of planet wheels 30 and an inner gear ring 31, wherein the planet wheels 30 are arranged on the planet carrier 29 and are meshed with the inner gear ring 31; one end of the output shaft of the main box is provided with an output tooth 32, and the output tooth 32 is meshed with the plurality of planet wheels 30; the auxiliary box output shaft assembly comprises an auxiliary box output shaft 33, a fourth synchronizer 34, a first engaging tooth and a second engaging tooth, the auxiliary box output shaft 33 is connected with the planet carrier 29, the first engaging tooth is connected with the first shell 1, the second engaging tooth is sleeved on the auxiliary box output shaft 33, and a spline hub of the fourth synchronizer 34 is connected with the inner gear ring 31 and located between the first engaging tooth and the second engaging tooth.

In this embodiment, when the main box output shaft rotates, the output tooth 32 drives the plurality of planet gears 30 to rotate, and the plurality of planet gears 30 drives the inner gear ring 31 to rotate.

When the engaging sleeve of the fourth synchronizer 34 moves towards the direction of the first engaging tooth and is engaged with the first engaging tooth, the first engaging tooth limits the engaging sleeve of the fourth synchronizer 34 to rotate, that is, the engaging sleeve of the fourth synchronizer 34 is not easy to rotate relative to the first housing 1, so that the spline hub of the fourth synchronizer 34 cannot rotate, because the spline hub of the fourth synchronizer 34 is connected with the ring gear 31, the ring gear 31 is also difficult to rotate relative to the first housing 1, at this time, the plurality of planet gears 30 are driven by the output tooth 32, the plurality of planet gears 30 rotate by taking the main box output shaft as a rotation center, the plurality of planet gears 30 drive the planet carrier 29 to rotate, the planet carrier 29 drives the auxiliary box output shaft 33 to rotate, and power transmission from the main box output shaft to the auxiliary box output shaft 33 and power output from the auxiliary box output shaft 33 are realized.

When the engaging sleeve of the fourth synchronizer 34 moves towards the direction of the second engaging tooth and is engaged with the second engaging tooth, the inner gear ring 31 drives the spline hub of the fourth synchronizer 34 to rotate, and the spline hub of the fourth synchronizer 34 drives the engaging sleeve of the fourth synchronizer 34 to rotate, so that the engaging sleeve of the second synchronizer 22 can drive the auxiliary box output shaft 33 to rotate, and power transmission from the main box output shaft to the auxiliary box output shaft 33 and power output from the auxiliary box output shaft 33 are realized.

When the engaging sleeve of the fourth synchronizer 34 is engaged with the first engaging tooth or the second engaging tooth, the auxiliary box output shaft 33 can rotate at different rotating speeds and output different torques, and on the basis that two sets of gear shifting functions can be realized in the application, each set of gear shifting mechanism can be matched with the planetary gear assembly and the auxiliary box output shaft assembly respectively, so that the gear number of the gearbox is further increased, and the transmission ratio range of the gearbox is enlarged.

An embodiment according to a second aspect of the present invention provides a vehicle comprising a gearbox according to any of the above-mentioned aspects.

In this technical scheme, because the vehicle includes the gearbox of any one of the above-mentioned embodiments, consequently the utility model provides a vehicle has the whole benefits of the gearbox that provides in any one of the above-mentioned embodiments.

In particular, the vehicle also comprises external equipment, which is connected to the power take-off shaft 4, to the power take-off 10 in case the gearbox comprises a power take-off 10, which external equipment comprises a lift pump.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A transmission, comprising:

the shell assembly comprises a first shell and a second shell, and the first shell is buckled with the second shell;

a countershaft assembly disposed within the first housing, the countershaft assembly including a countershaft;

and the power take-off assembly comprises a power take-off shaft, one end of the power take-off shaft is connected with the intermediate shaft, and the other end of the power take-off shaft is connected with the second shell and faces the outer side of the shell assembly.

2. The gearbox of claim 1,

the middle shaft comprises a middle shaft body and a mounting hole, the mounting hole is formed in the end portion of the middle shaft body, and one end of the power take-off shaft is inserted into the mounting hole.

3. The gearbox of claim 2,

the middle shaft further comprises a first spline, and the first spline is arranged on the inner wall of the mounting hole;

the power take-off shaft comprises a power take-off shaft body and a second spline, the second spline is arranged at one end of the power take-off shaft body, and the first spline is matched with the second spline.

4. The gearbox of claim 1,

a bearing chamber is arranged on the second shell;

the power take-off component further comprises a bearing, and the bearing is sleeved at the other end of the power take-off shaft body and embedded in the bearing chamber.

5. The transmission of claim 1, wherein the power take-off assembly further comprises:

and one end of the power takeoff is connected with the other end of the power takeoff shaft, and the other end of the power takeoff is used for providing power for external equipment.

6. The transmission of any one of claims 1 to 5, wherein reverse gear teeth are provided on the countershaft, the transmission further comprising:

the reverse gear steering wheel is meshed with the reverse gear teeth;

the main box output shaft assembly comprises a main box output shaft, a first bearing assembly, an output gear assembly and an outer gear ring, the first bearing assembly is sleeved on the main box output shaft, the output gear assembly is sleeved on the first bearing assembly, and an inner ring of the outer gear ring is provided with a spline and matched with the main box output shaft;

the output gear assembly comprises a reverse gear, and the reverse gear is meshed with the reverse gear steering wheel;

and the reverse gear is provided with engaging teeth which can be matched with the teeth of the outer gear ring.

7. The transmission of claim 6, further comprising:

the input shaft assembly comprises an input shaft, a second bearing, a constant-meshing input gear and a first synchronizer, the first synchronizer is sleeved on the input shaft, the second bearing is sleeved on the input shaft, and the constant-meshing input gear is sleeved on the second bearing and positioned on one side of the first synchronizer;

the intermediate shaft assembly comprises a normally meshed transmission gear, and the normally meshed transmission gear is sleeved on the intermediate shaft and meshed with the normally meshed input gear.

8. The gearbox of claim 7,

the output gear assembly further comprises a first output gear positioned on the other side of the first synchronizer;

the intermediate shaft assembly further comprises a first transmission gear, and the first transmission gear is sleeved on the intermediate shaft and meshed with the first output gear;

the output gear assembly further comprises a second output gear, the main box output shaft assembly further comprises a second synchronizer, and the second synchronizer is sleeved on the main box output shaft and is positioned between the first output gear and the second output gear;

the middle shaft assembly further comprises a second transmission gear, and the second transmission gear is sleeved on the middle shaft and meshed with the second output gear;

the output gear assembly further comprises a third output gear and a fourth output gear, the main box output shaft assembly further comprises a third synchronizer, and the third synchronizer is sleeved on the main box output shaft and is positioned between the third output gear and the fourth output gear;

and a third tooth is further arranged on the intermediate shaft, the third tooth is meshed with the third output gear, and the reverse gear tooth is meshed with the fourth output gear.

9. The transmission of claim 6, further comprising:

the planetary gear assembly comprises a planet carrier, a plurality of planet gears and an inner gear ring, wherein the planet gears are arranged on the planet carrier and are meshed with the inner gear ring;

one end of the output shaft of the main box is provided with an output tooth, and the output tooth is meshed with the plurality of planet wheels;

the auxiliary box output shaft assembly comprises an auxiliary box output shaft, a fourth synchronizer, a first engaging tooth and a second engaging tooth, the auxiliary box output shaft is connected with the planet carrier, the first engaging tooth is connected with the first shell, the second engaging tooth is sleeved on the auxiliary box output shaft, and a spline hub of the fourth synchronizer is connected with the inner gear ring and is positioned between the first engaging tooth and the second engaging tooth.

10. A vehicle comprising a gearbox according to any of claims 1 to 9.

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