CN214008005U - gearbox - Google Patents

Abstract

The utility model provides a gearbox, which comprises an output shaft assembly of a main box and a first synchronizer. The main case output shaft assembly includes a main case output shaft and a first output gear, the first output gear is sleeved on the main case output shaft; the first synchronizer includes a spline hub, a first bearing and a first engagement ring gear, the spline The hub is sleeved on the output shaft of the main box, the first bearing is sleeved on the spline hub, and the first engagement ring gear is sleeved on the first bearing and is connected with the first output gear. In the gearbox provided by the utility model, since the first combined ring gear is sleeved on the spline hub, the coaxiality of the first combined ring gear and the first engaging sleeve is improved, so that the first engaging ring gear is relatively opposite to the first engaging ring. The size of the sleeve is more accurate.

Description

Gear box

Technical Field

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

Background

Currently, gearboxes require that shifting be achieved by the engagement teeth and the engagement sleeve of the synchronizer cooperating.

In the related art, because the engaging teeth and the engaging sleeve have certain deviation in radial dimension, a stuck phenomenon can occur when the engaging sleeve moves towards the engaging teeth in the gear shifting process, and the gear shifting smoothness of the gearbox is further reduced.

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.

Therefore, the utility model discloses a gearbox is proposed.

In view of this, the present invention provides a transmission including a main case output shaft assembly and a first synchronizer. The main box output shaft assembly comprises a main box output shaft and a first output gear, and the first output gear is sleeved on the main box output shaft; the first synchronizer comprises a spline hub, a first bearing and a first joint gear ring, the spline hub is sleeved on the main box output shaft, the first bearing is sleeved on the spline hub, and the first joint gear ring is sleeved on the first bearing and connected with the first output gear.

The utility model provides a gearbox, first synchronizer include spline hub, first bearing and first joint ring gear, and first joint ring gear is located on the spline hub through the bearing housing to be connected with first gear, can rotate with first gear together.

Because the first joint gear ring is sleeved on the spline hub, the coaxiality of the first joint gear ring and the first joint sleeve is improved, so that the relative size of the first joint gear ring and the size of the first joint sleeve are more accurate, the first joint sleeve can smoothly move to the outer side of the first joint gear ring and is matched with the joint teeth of the first joint gear ring in the gear shifting process, the probability of jamming in the gear shifting process is reduced, and the gear shifting smoothness of the gearbox is improved.

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

in one aspect of the present invention, the first synchronizer further includes a first synchronizing ring and a first engaging sleeve; the first synchronizer ring is arranged on the side of the first joint gear ring; the first engaging sleeve is disposed outside the spline hub and is slidable relative to the first synchronizing ring and the first engaging ring gear.

In the technical scheme, the first joint sleeve is sleeved on the outer side of the spline hub, the first joint gear ring is also sleeved on the outer side of the spline hub, so that the positioning reference of the first joint sleeve and the first joint gear ring is uniform, compared with the situation that the first joint gear ring is sleeved on the first output gear, the coaxiality between the first joint gear ring and the first joint sleeve is further improved, the deviation of the first joint gear ring relative to the first joint sleeve is smaller, further, in the gear shifting process, the first joint sleeve can smoothly move to the outer side of the first joint gear ring and is matched with the joint teeth of the first joint gear ring, the probability of gear jamming in the gear shifting process is reduced, and the gear shifting smoothness of the gearbox is improved.

In one embodiment of the present invention, the inner wall of the first output gear is provided with a second engaging tooth, and the first engaging gear ring includes a first gear ring body, a connecting portion, and a first engaging tooth; the connecting part is connected with one side of the first gear ring body and embedded in the first output gear; the first engaging teeth are disposed on an outer wall of the connecting portion and engaged with the second engaging teeth.

In the technical scheme, the connecting part is arranged, and the first joint teeth are arranged on the connecting part, so that the first joint teeth can be meshed with the second joint teeth on the inner wall of the first output gear, the connection between the first gear ring body and the first output gear is further realized, and the first output gear and the first joint gear ring synchronously rotate.

The utility model discloses an among the technical scheme, first joint ring gear still includes the installation department, and the installation department is connected with the opposite side of first ring gear body, and the cover is located on the first bearing.

In this technical scheme, through setting up the installation department for first ring gear body can be supported on the spline hub, and then realizes the location to first joint ring gear.

In one technical scheme of the utility model, the gearbox also comprises an input shaft assembly and an intermediate shaft assembly, the input shaft assembly comprises an input shaft and a constant mesh input gear, and the constant mesh input gear is sleeved on the input shaft; the middle shaft assembly comprises a middle shaft, a normally meshed transmission gear and a first transmission gear, the normally meshed transmission gear is sleeved on the middle shaft and meshed with the normally meshed input gear, and the first transmission gear is sleeved on the middle shaft; the first output gear is meshed with the first transmission gear.

In the technical scheme, the input shaft can be connected with an engine of a vehicle, and power output by the transmitter is transmitted to an axle through the input shaft, the intermediate shaft and the output shaft so as to drive the vehicle and control the speed of the vehicle.

The utility model discloses an among the technical scheme, jackshaft assembly's quantity is two sets of, and two sets of jackshaft assembly are located the both sides of main tank output shaft subassembly respectively.

In this technical scheme, two sets of jackshaft subassemblies are located main case output shaft subassembly both sides respectively, and two sets of jackshaft subassemblies are simultaneously to main case output shaft subassembly transmission power for the first output gear of main case output shaft subassembly receives two radial forces of opposite direction simultaneously, when the realization is supported first output gear, makes first output gear receive two radial forces simultaneously and offsets each other, reduces the runout of first output gear, and then makes the work of gearbox more stable.

And because two sets of jackshaft subassemblies support first output gear simultaneously, so make first output gear no longer rely on the main box output shaft, and then reduce the friction between main box output shaft and the first gear, prolong the life of main box output shaft subassembly.

The utility model discloses an among the technical scheme, the gearbox includes intermediate shaft subassembly, reverse gear idler and main case output shaft subassembly. The jackshaft subassembly includes jackshaft and reverse gear drive gear, and reverse gear drive gear cover is located on the jackshaft. The reverse gear idler wheel is meshed with the reverse gear transmission gear. The main box output shaft assembly comprises a main box output shaft, an elastic sleeve and a reverse gear output gear, the elastic sleeve is sleeved on the main box output shaft, and the reverse gear output gear is sleeved on the elastic sleeve and meshed with a reverse gear idle gear.

In the technical scheme, the reverse gear output gear is meshed with a reverse gear steering wheel, and the reverse gear steering wheel supports the reverse gear output gear; the reverse gear output gear is sleeved on the main box output shaft, the elastic sleeve is arranged between the main box output shaft and the reverse gear output gear, so that the reverse gear output gear can support the main box output shaft, the reverse gear output gear can assist the radial force received by the main box output shaft, the radial run-out of the main box output shaft is reduced, and the stability of the gearbox is improved.

And because reverse gear output gear's rotational speed is slower, reduce the frictional force between output shaft and the elastic sleeve, and then reduce the elastic sleeve and apply the resistance to the output shaft, and then when promoting transmission efficiency, reduce the elastic sleeve, wearing and tearing prolong the life of elastic sleeve.

In one technical scheme of the utility model, the elastic sleeve comprises a rubber sleeve and a metal framework; the rubber sleeve is sleeved on the output shaft of the main box; the metal framework is sleeved outside the rubber sleeve.

In this technical scheme, the elastic sleeve includes rubber sleeve and metal framework, and the rubber sleeve can promote the elasticity of elastic sleeve, and then makes the rotation of main case output shaft more nimble, and metal framework can promote the intensity of elastic sleeve, and then promotes the support effect of reverse gear output gear to main case output shaft.

The utility model discloses an among the technical scheme, the gearbox still includes the shell subassembly, and the shell subassembly includes first main tank casing, second main tank casing, auxiliary tank casing and first locating pin. The first main box shell is provided with a first positioning hole. One side of the second main box housing is connected with the first main box housing. The auxiliary box shell is connected with the other side of the second main box shell, and a second positioning hole is formed in the auxiliary box shell. One end of the first positioning pin is inserted into the second positioning hole, and the other end of the first positioning pin penetrates through the second main box shell and then is inserted into the first positioning hole.

The utility model provides a shell subassembly, first main tank casing and second main tank casing looks lock enclose out the main tank cavity of gearbox, and vice case casing lock encloses out the vice case space on second main tank casing.

Be provided with first locating hole on the first main tank casing, be provided with the second locating hole on the auxiliary tank casing, first locating pin one end is inserted and is located in the second locating hole, the other end passes and pegs graft in first locating hole behind the second main tank casing, make auxiliary tank casing and first main tank casing fix a position, when the power part in the auxiliary tank cavity fixes a position with auxiliary tank casing, first locating pin transmits the location benchmark to first main tank casing, and then unanimous with the location benchmark of the power transmission part in the main tank cavity, promote the cooperation precision between the power transmission part in main tank cavity and the auxiliary tank cavity, and then promote the positioning precision of gearbox.

And the direct and first main case casing of vice case casing is fixed a position, fix a position with vice case casing is direct and first main case casing, second main case casing is fixed a position again with first main case casing and is compared, reduce the transmission of location benchmark, and then reduce the influence of the error between each location benchmark to positioning accuracy, further promote the positioning accuracy between vice case casing and the first main case casing, make the position relation between the power transmission part in main case cavity and the vice case cavity more accurate, promote the smoothness nature and the power transmission efficiency of gearbox transmission merit power.

In one technical solution of the present invention, the first main box casing is provided with a third positioning hole; a fourth positioning hole is formed in one side of the second main box shell; the shell assembly further comprises a second positioning pin, one end of the second positioning pin is inserted into the third positioning hole, and the other end of the second positioning pin is inserted into the fourth positioning hole.

In the technical scheme, two ends of the second positioning pin are respectively inserted into the third positioning hole and the fourth positioning hole, so that the first main box shell and the second main box shell are positioned, the matching precision between power transmission parts in the main box cavity is improved, and the smoothness and the power transmission efficiency of the transmission power of the gearbox are further improved.

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:

figure 1 shows a cross-sectional view of a gearbox according to an embodiment of the present invention;

figure 2 shows a partial schematic view of a secondary case of a gearbox according to an embodiment of the invention;

fig. 3 shows a partial schematic diagram at a first synchronizer according to an embodiment of the invention;

FIG. 4 illustrates a partial schematic view at a first engaged ring gear in accordance with an embodiment of the present invention;

fig. 5 shows a partial schematic view at a reverse output gear according to an embodiment of the present invention;

fig. 6 shows a left side view of a gearbox according to an embodiment of the invention;

fig. 7 shows a schematic structural view of a mileage tooth according to an embodiment of the present invention;

fig. 8 shows a front view of a mileage tooth according to an embodiment of the present invention;

fig. 9 illustrates a cross-sectional view of a mileage tooth according to one embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:

1 casing component, 102 main box housing, 1022 first main box housing, 1024 second main box housing, 104 sub-box housing, 106 first positioning pin, 108 second positioning pin, 2 main box output shaft component, 202 main box output shaft, 204 first output gear, 2042 second engaging tooth, 206 elastic sleeve, 2062 rubber sleeve, 2064 metal skeleton, 208 reverse gear output gear, 210 first plane bearing, 3 input shaft component, 302 input shaft, 304 constant mesh input gear, 306 second plane bearing, 4 middle shaft component, 402 middle shaft, 404 constant mesh transmission gear, 406 first transmission gear, 408 reverse gear transmission gear, 410 reverse gear idle gear, 5 first synchronizer, 502 spline hub, 504 first bearing, 506 first ring gear engaging, 5062 first ring gear body, 5064 connecting part, 5066 first engaging tooth, 5068 mounting part, 508 first synchronizing ring, 510 first engaging sleeve, 6 planet wheel assembly, 602 ring gear, 604 sun gear, 606 planet carrier, 608 first planet carrier, 610 second planet carrier, 612 planet gear, 614 second bearing, 7 count ring gear, 702 second ring gear body, 704 first bending part, 706 notch, 708 second bending part, 8 second synchronizer, 802 second engaging sleeve, 804 second engaging ring gear, 806 third engaging ring gear, 902 sub-box output shaft, 904 first filtering component, 906 second filtering component, 908 magnetic component.

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.

A gearbox according to some embodiments of the present invention is described below with reference to fig. 1 to 9.

In one embodiment of the invention, as shown in fig. 1 and 3, the gearbox comprises a main box output shaft assembly 2 and a first synchronizer 5. The main box output shaft assembly 2 comprises a main box output shaft 202 and a first output gear 204, and the first output gear 204 is sleeved on the main box output shaft 202; the first synchronizer 5 includes a spline hub 502, a first bearing 504 and a first engaging gear ring 506, the spline hub 502 is sleeved on the main box output shaft 202, the first bearing 504 is sleeved on the spline hub 502, and the first engaging gear ring 506 is sleeved on the first bearing 504 and connected with the first output gear 204.

In this embodiment, the first synchronizer 5 includes a spline hub 502, a first bearing 504 and a first engagement gear ring 506, and the first engagement gear ring 506 is sleeved on the spline hub 502 through the bearing, connected with a first gear, and can rotate together with the first gear.

Because the first combination gear ring is sleeved on the spline hub 502, the coaxiality of the first combination gear ring and the first joint sleeve 510 is improved, so that the relative size of the first combination gear ring 506 and the size of the first joint sleeve 510 are more accurate, further, in the gear shifting process, the first joint sleeve 510 can smoothly move to the outer side of the first combination gear ring 506 and is matched with the joint teeth of the first combination gear ring 506, the probability of jamming in the gear shifting process is reduced, and the gear shifting smoothness of the gearbox is improved.

In one embodiment of the present invention, as shown in fig. 1 and 3, the first synchronizer 5 further comprises a first synchronizer ring 508 and a first engaging sleeve 510; the first synchronizer ring 508 is provided on the side of the first joint ring 506; first clutch collar 510 is disposed outside of splined hub 502 and is slidable relative to first synchronizing ring 508 and first ring gear 506.

In this embodiment, the first engaging sleeve 510 is sleeved outside the spline hub 502, and the first engaging gear 506 is also sleeved outside the spline hub 502, so that the positioning references of the first engaging sleeve 510 and the first engaging gear 506 are uniform, and compared with the case where the first engaging gear 506 is sleeved on the first output gear 204, the coaxiality between the first engaging gear 506 and the first engaging sleeve 510 is further improved, and the deviation of the first engaging gear 506 relative to the first engaging sleeve 510 is smaller, so that during the gear shifting process, the first engaging sleeve 510 can smoothly move to the outside of the first engaging gear 506 and cooperate with the engaging teeth of the first engaging gear 506, thereby reducing the possibility of jamming during the gear shifting process, and improving the smoothness of the gear shifting of the transmission.

In an embodiment of the present invention, as shown in fig. 1 and 4, the inner wall of the first output gear 204 is provided with second engaging teeth 2042, and the first engaging ring 506 includes a first ring gear body 5062, a connecting portion 5064, and first engaging teeth 5066; the connecting portion 5064 is connected to one side of the first ring gear body 5062, and is fitted into the first output gear 204; the first coupling teeth 5066 are provided on an outer wall of the connecting portion 5064 to be engaged with the second coupling teeth 2042.

In this embodiment, the connection between the first ring gear body 5062 and the first output gear 204 is achieved by providing the connecting portion 5064 and providing the first engaging tooth 5066 on the connecting portion 5064 such that the first engaging tooth 5066 can mesh with the second engaging tooth 2042 on the inner wall of the first output gear 204, so that the first output gear 204 and the first engaging ring gear 506 rotate in synchronism.

In one embodiment of the present invention, as shown in fig. 1 and 4, the first coupling ring gear 506 further includes a mounting portion 5068, and the mounting portion 5068 is connected to the other side of the first ring gear body 5062 and is sleeved on the first bearing 504.

In this embodiment, positioning of first ring gear 506 is accomplished by providing mounting portion 5068 such that first ring gear body 5062 may be supported on splined hub 502.

In one embodiment of the present invention, as shown in fig. 1 and 2, the transmission includes a case assembly 1, a main case output shaft assembly 2, a planetary gear assembly 6, a secondary case output shaft 902, and a second synchronizer 8. The shell assembly 1 includes a main box housing 102 and a sub-box housing 104, and the sub-box housing 104 is fastened to the main box housing 102. The main box output shaft assembly 2 includes a main box output shaft 202, one end of the main box output shaft 202 being disposed within the main box housing 102. The planet wheel assembly 6 is arranged in the secondary box shell 104, and one end of the planet wheel assembly 6 is connected with the other end of the main box output shaft 202. The secondary case output shaft 902 is connected to the other end of the planet wheel assembly 6. The second synchronizer 8 is disposed between the planet wheel assembly 6 and the main box housing 102.

In this embodiment, the main box is connected with an engine of the vehicle, and power output by the engine is transmitted to the auxiliary box from the main box and is transmitted to the axle from the auxiliary box so as to drive the vehicle.

The second synchronizer 8 is arranged between the planetary gear assembly 6 and the main box shell 102, so that the synchronizer of the auxiliary box is arranged in front, the appearance size of the second synchronizer 8 is smaller than that of the planetary gear assembly 6, and further the synchronizer can be arranged at a position closer to the main box, even the second synchronizer 8 can be partially arranged inside the main box, compared with the auxiliary box synchronizer in a rear mode, the second synchronizer 8 is arranged between the planetary gear assembly 6 and the main box shell 102, so that the gearbox is more compact in axial size, the size of the gearbox in the axial direction is reduced, and further the space occupied by the gearbox is reduced.

And because the size of the gearbox in the axial direction is reduced, the length of the auxiliary box output shaft 902 in the gearbox is further shortened, the strength of the auxiliary box output shaft 902 is improved, the radial runout of the auxiliary box output shaft 902 is reduced, and the overall quality of the gearbox is improved.

In an embodiment of the present invention, as shown in fig. 1 and 2, the planetary gear assembly 6 includes an inner gear ring 602, a sun gear 604, a planet carrier 606, and a plurality of planetary gears 612. The sun gear 604 is connected to the other end of the main box output shaft 202. The carrier 606 is connected to the sub-tank output shaft 902. A plurality of planet gears 612 are arranged on the planet carrier 606, distributed along the circumferential direction of the sun gear 604, and engaged with the ring gear 602 and the sun gear 604.

In this embodiment, the sun gear 604 is connected to the main box output shaft 202, the planet carrier 606 is connected to the sub-box output shaft 902, and power is transmitted from the main box output shaft 202 to the planet gear assembly 6 and then to the sub-box output shaft 902, thereby outputting power to the axle.

The sun gear 604 is engaged with a plurality of planet gears 612, the plurality of planet gears 612 are mounted on the planet carrier 606 and engaged with the inner gear ring 602, when the sun gear 604 rotates, the planet gears 612 are driven to rotate, the planet carrier 606 is driven to rotate, and the planet carrier 606 drives the auxiliary box output shaft 902 to rotate.

When the rotation speed of the sun gear 604 is constant, the inner gear ring 602 is fixed, the rotation speed of the planet carrier 606 is a first rotation speed, and the auxiliary box is in a first gear; the ring gear 602 is connected to the planet carrier 606, the rotation speed of the planet carrier 606 is the second rotation speed, and the sub-tank is in the second gear.

In one embodiment of the present invention, as shown in fig. 1 and 2, the second synchronizer 8 includes a second engaging sleeve 802, a second engaging ring gear 804, and a third engaging ring gear 806. The second engaging sleeve 802 is connected with the ring gear 602; a second engaging ring gear 804 is connected to the shell assembly 1 on one side of the second engaging sleeve 802; the third ring gear 806 is connected to the carrier 606 on the other side of the second joint sleeve 802.

In this embodiment, the second synchronizer 8 includes a second engaging sleeve 802, a second engaging ring gear 804 and a third engaging ring gear 806, the second engaging ring gear 804 and the third engaging ring gear 806 are respectively located at two sides of the second engaging sleeve 802, when the second engaging sleeve 802 slides to the second engaging ring gear 804, the second engaging sleeve 802 is engaged with the second engaging ring gear 804, the ring gear 602 is connected with the shell component 1, so as to fix the inner ring gear 602, the rotation speed of the planet carrier 606 is the first rotation speed, and the auxiliary box is in the first gear; when the second engaging sleeve 802 slides to the third engaging ring gear 806, the second engaging sleeve 802 is engaged with the third engaging ring gear 806, the ring gear 602 is connected with the planet carrier 606, the planet carrier 606 rotates at the second speed, and the sub-tank is in the second gear.

In an embodiment of the present invention, as shown in fig. 1 and 2, the sun gear 604 is a gear shaft connected to the other end of the main box output shaft 202, and the second synchronizer 8 is sleeved outside the gear shaft.

In this embodiment, the sun gear 604 is a gear shaft, and the gear shaft can extend into the main box, thereby shortening the length of the main box output shaft 202 and improving the strength of the main box output shaft 202. And the second synchronizer 8 is sleeved on the gear shaft, and the second synchronizer 8 can be closer to the main box, so that the size of the gearbox in the axial direction is shortened.

In an embodiment of the present invention, the sun gear 604 is a gear, and is sleeved on the other end of the main box output shaft 202, and the second synchronizer 8 is sleeved on the outer side of the main box output shaft 202.

In this embodiment, the sun gear 604 is a gear, and is sleeved on the main box output shaft 202, thereby simplifying the processing process of the main box output shaft 202. And the second synchronizer 8 is sleeved on the main box output shaft 202, so that the second synchronizer 8 can partially enter the main box, and the size of the gearbox in the axial direction is further shortened.

In one embodiment of the present invention, as shown in fig. 1 and 2, the main box housing 102 is provided with a bearing chamber; the gearbox further comprises a second bearing 614, and the second bearing 614 is embedded in the bearing chamber; the planet carrier 606 includes a first planet carrier 608 and a second planet carrier 610, the first planet carrier 608 being located on one side of a plurality of planet wheels 612 and being inserted in the inner race of a second bearing 614, the second planet carrier 610 being located on the other side of the plurality of planet wheels 612 and being connected to the secondary box output shaft 902.

In this embodiment, support for the planet carrier 606 is achieved by mounting the second bearing 614 on the main box housing 102, which in turn makes the main box output shaft 202 more rotationally stable.

In an embodiment of the present invention, as shown in fig. 1 and 2, the second synchronizer 8 is sleeved on the first carrier 608.

In this embodiment, the second synchronizer 8 is sleeved on the first planet carrier 608, so that the second synchronizer 8 is supported, the positions of the second synchronizer 8 and the planet carrier 606 are more accurate, and the shifting smoothness of the auxiliary box is further improved.

In one embodiment of the present invention, as shown in fig. 1 and 5, the transmission includes an intermediate shaft assembly 4, a reverse idler 410, and a main case output shaft assembly 2. The intermediate shaft assembly 4 comprises an intermediate shaft 402 and a reverse gear transmission gear 408, and the reverse gear transmission gear 408 is sleeved on the intermediate shaft 402. The reverse idler gear 410 meshes with the reverse drive gear 408. The main box output shaft assembly 2 comprises a main box output shaft 202, an elastic sleeve 206 and a reverse gear output gear 208, wherein the elastic sleeve 206 is sleeved on the main box output shaft 202, and the reverse gear output gear 208 is sleeved on the elastic sleeve 206 and meshed with a reverse gear idle gear 410.

In this embodiment, the reverse output gear 208 is engaged with a reverse steering wheel, which supports the reverse output gear 208; the reverse gear output gear 208 is sleeved on the main box output shaft 202, and the elastic sleeve 206 is arranged between the main box output shaft 202 and the reverse gear output gear 208, so that the reverse gear output gear 208 can support the main box output shaft 202, the reverse gear output gear 208 can assist the radial force applied to the main box output shaft 202, the radial jumping of the main box output shaft 202 is reduced, and the stability of the gearbox is improved.

And because the rotational speed of reverse gear output gear 208 is slower, reduce the frictional force between output shaft and elastic sleeve 206, and then reduce the resistance that elastic sleeve 206 applied to the output shaft, and then when promoting transmission efficiency, reduce elastic sleeve 206, wear, the life of extension elastic sleeve 206.

In one embodiment of the present invention, as shown in fig. 1 and 5, the elastic sheath 206 includes a rubber sheath 2062 and a metal skeleton 2064; the rubber sleeve 2062 is sleeved on the main box output shaft 202; the metal frame 2064 is sleeved outside the rubber sleeve 2062.

In this embodiment, the elastic sleeve 206 includes a rubber sleeve 2062 and a metal skeleton 2064, the rubber sleeve 2062 can improve the elasticity of the elastic sleeve 206, so that the rotation of the main box output shaft 202 is more flexible, and the metal skeleton 2064 can improve the strength of the elastic sleeve 206, so as to improve the supporting effect of the reverse gear output gear 208 on the main box output shaft 202.

In one embodiment of the present invention, as shown in fig. 1, the transmission includes an input shaft assembly 3, an intermediate shaft assembly 4, and a main case output shaft assembly 2. The input shaft assembly 3 includes an input shaft 302 and a constant mesh input gear 304, and the constant mesh input gear 304 is sleeved on the input shaft 302. The intermediate shaft assembly 4 comprises an intermediate shaft 402, a constant mesh transmission gear 404 and a first transmission gear 406, the constant mesh transmission gear 404 is sleeved on the intermediate shaft 402 and is meshed with the constant mesh input gear 304, and the first transmission gear 406 is sleeved on the intermediate shaft 402. The main box output shaft assembly 2 includes a main box output shaft 202 and a first output gear 204, and the first output gear 204 is sleeved on the main box output shaft 202 and meshed with the first transmission gear 406. The constant mesh input gear 304, the first transmission gear 406 and the first output gear 204 are helical gears, the rotational direction of the constant mesh input gear 304 is opposite to the rotational direction of the first transmission gear 406, and the rotational direction of the constant mesh input gear 304 is opposite to the rotational direction of the first output gear 204.

In this embodiment, the input shaft 302 may be connected with an engine of a vehicle, and power output by the engine is transmitted to an axle through the input shaft 302, the intermediate shaft 402 and the output shaft, so as to drive the vehicle and control the speed of the vehicle.

In the process of power transmission of the gearbox, the constant mesh input gear 304, the first transmission gear 406 and the first output gear 204 are helical gears, so that the constant mesh input gear 304, the first transmission gear 406 and the first output gear 204 can bear larger load, the gearbox can be suitable for vehicles with larger load capacity, and the application range of the gearbox is enlarged.

And because constant mesh input gear 304, first drive gear 406 and first output gear 204 can bear bigger load for the gearbox is more stable when transmitting power, and then promotes the cooperation precision between the gear, reduces the wearing and tearing between the gear, and then prolongs the life of constant mesh input gear 304, first drive gear 406 and first output gear 204, promotes the quality of gearbox.

And because the gearbox is more stable when transmitting power, the noise generated by the gearbox can be further reduced, and the vehicle is quieter in the driving process.

Because the rotation direction of the normally meshed input gear 304 is opposite to that of the first transmission gear 406, and the rotation direction of the normally meshed input gear 304 is opposite to that of the first output gear 204, in the working process of the gearbox, the axial forces borne by the input shaft 302 and the main box output shaft 202 are opposite, so that the stress of the input shaft 302 and the main box output shaft 202 is mutually offset, the positioning of the gears is more accurate, the abrasion among the gears is further reduced, and the service lives of the normally meshed input gear 304, the first transmission gear 406 and the first output gear 204 are prolonged.

Moreover, because the stresses of the input shaft 302 and the main box output shaft 202 are mutually offset, the axial force applied to the bearings supporting the input shaft 302 and the main box output shaft 202 is reduced, so that the inner ring and the outer ring of the bearings rotate at normal positions, the friction force of the bearings is reduced, and the service life of the bearings is prolonged.

Because the friction force of the bearing is reduced, the loss of the gearbox can be reduced, and the efficiency of the transmission of the gearbox force is improved.

In an embodiment of the present invention, as shown in fig. 1, the number of the intermediate shaft assemblies 4 is two, and the two sets of intermediate shaft assemblies 4 are respectively located on two sides of the main box output shaft assembly 2.

In this embodiment, two sets of jackshaft subassemblies 4 are located main case output shaft subassembly 2 both sides respectively, and two sets of jackshaft subassemblies 4 transmit power to main case output shaft subassembly 2 simultaneously for first output gear 204 of main case output shaft subassembly 2 receives two radial forces opposite in direction simultaneously, when the realization supports first output gear 204, makes first output gear 204 receive two radial forces simultaneously and offsets each other, reduces the runout of first output gear 204, and then makes the work of gearbox more stable.

And because two sets of jackshaft subassemblies 4 support first output gear 204 simultaneously, make first output gear 204 no longer rely on main case output shaft 202, and then reduce the friction between main case output shaft 202 and the first gear, prolong main case output shaft subassembly 2's life.

In one embodiment of the present invention, as shown in fig. 1, the constant mesh input gear 304 is right-handed, the first transmission gear 406 is left-handed, and the first output gear 204 is left-handed.

In this embodiment, the constant-meshed input gear 304 is right-handed, the first transmission gear 406 is left-handed, and the first output gear 204 is left-handed, during operation of the transmission, the force direction of the input shaft 302 is from the input shaft 302 to the main box output shaft 202, and the force direction of the main box output shaft 202 is from the main box output shaft 202 to the input shaft 302, so that the force directions of the input shaft 302 and the main box output shaft 202 are opposite to each other and offset each other, thereby positioning between the gears is more accurate, further reducing wear between the gears, and prolonging the service lives of the constant-meshed input gear 304, the first transmission gear 406, and the first output gear 204.

In an embodiment of the present invention, as shown in fig. 1, one end of the main box output shaft 202 is provided with a mounting groove, the transmission further includes a first plane bearing 210, the first plane bearing 210 is disposed in the mounting groove, one end of the input shaft 302 is inserted into the mounting groove, and the end of the input shaft 302 is connected to the first plane bearing 210.

In this embodiment, because the first planar bearing 210 is disposed between the input shaft 302 and the main box output shaft 202, when the force receiving directions of the input shaft 302 and the main box output shaft 202 are opposite, the first planar bearing 210 can support the input shaft 302 and the main box output shaft 202, so as to reduce friction between the end surfaces of the input shaft 302 and the main box output shaft 202, further reduce abrasion of the input shaft 302 and the main box output shaft 202, and prolong the service life of the input shaft 302 and the main box output shaft 202 under the condition of ensuring accurate positions of the input shaft 302 and the main box output shaft 202.

In an embodiment of the present invention, as shown in fig. 1, a mounting table is disposed on the input shaft 302, the transmission further includes a second planar bearing 306, the second planar bearing 306 is sleeved on the mounting table, the main box input shaft 302 is sleeved on the mounting table, and an end surface of the main box input shaft 302 contacts with the second planar bearing 306.

In this embodiment, because the second planar bearing 306 is disposed between the input shaft 302 and the main box output shaft 202, when the force receiving directions of the input shaft 302 and the main box output shaft 202 are opposite, the second planar bearing 306 can support the input shaft 302 and the main box output shaft 202, so that under the condition that the positions of the input shaft 302 and the main box output shaft 202 are ensured to be accurate, the friction between the end surfaces of the input shaft 302 and the main box output shaft 202 is reduced, the abrasion of the input shaft 302 and the main box output shaft 202 is reduced, and the service lives of the input shaft 302 and the main box output shaft 202 are prolonged.

In an embodiment of the present invention, as shown in fig. 1, the transmission further includes a first synchronizer 5, the first synchronizer 5 is sleeved on the main box output shaft 202 and is adapted to the input shaft 302 or the first transmission gear 406, so as to select gears.

In this embodiment, selection of the gear is achieved by providing a first synchronizer 5 on the main box output shaft 202.

In one embodiment of the present invention, as shown in fig. 6, the transmission includes a housing assembly 1, a pump assembly, and a second filter element 906; the pump assembly is arranged on the shell assembly 1, the pump assembly comprises an oil pump and a first filter part 904, and the first filter part 904 is arranged on the oil pump to filter engine oil passing through the oil pump; the second filter member 906 is connected to the pump assembly to re-filter the oil passing through the oil pump.

In this embodiment, a first filter 904 is disposed on the oil pump, and the oil is filtered for the first time when passing through the oil pump, so as to reduce impurities in the oil. After the engine oil passes through the oil pump, the engine oil passes through the second filtering component 906, and the second filtering component 906 can filter the engine oil again, so that impurities in the engine oil are further reduced.

The engine oil after the two-stage filtration is conveyed to the gear or the bearing, so that the lubrication and the cooling of the gear or the bearing are realized, and the rotation of the bearing or the gear cannot be hindered due to the fact that the impurities contained in the engine oil moving to the gear or the bearing are less, the motion resistance of the gearbox is reduced, and the rotation of the bearing or the gear is smoother.

The second filter member 906 has a higher filtration level than the first filter member 904, i.e., the second filter member 906 filters a smaller volume of impurities than the first filter member 904.

The first filter element 904 filters out relatively large-sized impurities, and the second filter element 906 filters out relatively small-sized impurities, so that double filtration of engine oil is realized.

In an embodiment of the present invention, as shown in fig. 6, a first mounting groove is provided on the housing assembly 1, and the pump assembly is mounted in the first mounting groove.

In this embodiment, a first mounting groove is provided on the housing assembly 1 to realize the mounting, rotation and positioning of the pump assembly, so that one end of the pump assembly is in the housing assembly 1, the end is provided with an oil inlet to suck the engine oil in the housing assembly 1, and the other end is on the outer side of the housing assembly 1 as an oil outlet to deliver the engine oil after the first filtration to the second filtration part 906.

In one embodiment of the present invention, as shown in fig. 6, the housing assembly 1 is provided with a second mounting groove, and the second filter member 906 is mounted in the second mounting groove.

In this embodiment, a second mounting groove is provided on the housing assembly 1 to enable mounting and positioning of the second filter member 906, so that the second filter member 906 can be stably coupled to the pump assembly to enable secondary filtering of the engine oil.

In one embodiment of the present invention, as shown in fig. 6, the transmission further comprises a magnetic member 908, and the magnetic member 908 is connected to the housing assembly 1 and is located at the side of the first filter element 904 and/or the second filter element 906.

In this embodiment, the magnetic member 908 is disposed on the side of the first filter component 904 and/or the second filter component 906, and the magnetic member 908 can absorb iron filings in the engine oil passing through the first filter component 904 and/or the second filter component 906, so as to further improve the filtering effect of the first filter component 904 and/or the second filter component 906.

In an embodiment of the present invention, the transmission further includes a pipeline, one end of the pipeline is connected to the oil outlet of the oil pump, and the other end of the pipeline is connected to the second filtering component 906.

In this embodiment, two ends of the pipeline are respectively connected with the oil pump and the second filter element 906, so that the engine oil can enter the second filter element 906 from the oil pump through the pipeline, and then the engine oil after secondary filtration is sent into the engine oil path of the gearbox, thereby realizing lubrication of the gear and the bearing.

Magnetic part 908 is located the side of pipeline, and then makes the iron fillings deposit in the pipeline after the absorption to the impurity that second filter element 906 filtered out also can deposit in the pipeline, and the pipeline is located the outside of shell subassembly 1, and then the impurity of piling up in convenient to detach and the clearance pipeline.

In an embodiment of the present invention, the first filter element 904 is disposed at the oil inlet of the oil pump.

In this embodiment, the first filter element 904 is located at the oil inlet of the oil pump, so that the impurities filtered by the first filter element 904 can flow back into the mailbox, and random oil can be discharged out of the gearbox when the engine oil is replaced.

In an embodiment of the present invention, as shown in fig. 1, the transmission further comprises a main box input shaft 302, the main box input shaft 302 is provided with a first oil path, and the first oil path is connected with the second filter element 906.

In this embodiment, the oil pump feeds the oil filtered by the first filter element 904 and the second filter element 906 into the first oil path on the main tank input shaft 302, thereby lubricating the normally meshed input gear 304.

In one embodiment of the present invention, as shown in fig. 1, the transmission further comprises a main case output shaft 202 and an auxiliary case output shaft 902; a second oil path is arranged on the main box output shaft 202, and one end of the second oil path is connected with the first oil path; the sub-tank output shaft 902 is provided with a third oil passage, which is connected to the other end of the second oil passage.

In this embodiment, the oil passes through the first oil passage and then enters the second oil passage provided in the main casing output shaft 202, thereby lubricating the first output gear 204 and the reverse output gear 208. After passing through the second oil path, the engine oil flows into the third oil path provided on the auxiliary box output shaft 902, thereby lubricating the auxiliary box planetary gear assembly.

The first oil path and the second oil path are connected through a joint, and the second oil path and the third oil path are connected through a joint.

In one embodiment of the present invention, as shown in fig. 1, the transmission further comprises an input shaft assembly 3 and an intermediate shaft assembly 4; the input shaft assembly 3 comprises an input shaft 302 and a constant mesh input gear 304, wherein the constant mesh input gear 304 is sleeved on the input shaft 302; the intermediate shaft component 4 comprises an intermediate shaft 402, a constant mesh transmission gear 404 and a first transmission gear 406, wherein the constant mesh transmission gear 404 is sleeved on the intermediate shaft 402 and is meshed with the constant mesh input gear 304, and the first transmission gear 406 is sleeved on the intermediate shaft 402; the main box output shaft assembly 2 further includes a first output gear 204, and the first output gear 204 is sleeved on the main box output shaft 202 and meshed with the first transmission gear 406.

In this embodiment, the input shaft 302 may be connected with an engine of a vehicle, and power output by the engine is transmitted to an axle through the input shaft 302, the intermediate shaft 402 and the output shaft, so as to drive the vehicle and control the speed of the vehicle.

In one embodiment of the present invention, as shown in fig. 1, the gearbox further comprises a first synchronizer 5, the first synchronizer 5 comprising a splined hub 502, a first bearing 504, a first engaging ring 506, a first synchronizing ring 508 and a first engaging sleeve 510; the spline hub 502 is sleeved on the main box output shaft 202; the first bearing 504 is sleeved on the spline hub 502; the first engaging gear ring 506 is sleeved on the first bearing 504 and connected with the first output gear 204; the first synchronizer ring 508 is provided on the side of the first joint ring 506; first clutch collar 510 is disposed outside of splined hub 502 and is slidable relative to first synchronizing ring 508 and first ring gear 506.

In this embodiment, the first synchronizer 5 includes a spline hub 502, a first bearing 504 and a first engagement gear ring 506, and the first engagement gear ring 506 is sleeved on the spline hub 502 through the bearing, connected with a first gear, and can rotate together with the first gear.

Because the first combination gear ring is sleeved on the spline hub 502, the coaxiality of the first combination gear ring and the first joint sleeve 510 is improved, so that the relative size of the first combination gear ring 506 and the size of the first joint sleeve 510 are more accurate, further, in the gear shifting process, the first joint sleeve 510 can smoothly move to the outer side of the first combination gear ring 506 and is matched with the joint teeth of the first combination gear ring 506, the probability of jamming in the gear shifting process is reduced, and the gear shifting smoothness of the gearbox is improved.

The first engaging sleeve 510 is sleeved on the outer side of the spline hub 502, and the first engaging gear ring 506 is also sleeved on the outer side of the spline hub 502, so that the positioning reference of the first engaging sleeve 510 and the first engaging gear ring 506 is uniform, and compared with the case that the first engaging gear ring 506 is sleeved on the first output gear 204, the coaxiality between the first engaging gear ring 506 and the first engaging sleeve 510 is further improved, the deviation between the first engaging gear ring 506 and the first engaging sleeve 510 is smaller, and further, in the gear shifting process, the first engaging sleeve 510 can smoothly move to the outer side of the first engaging gear ring 506 and is matched with the engaging teeth of the first engaging gear ring 506, so that the probability of jamming in the gear shifting process is reduced, and the gear shifting smoothness of the gearbox is improved.

In an embodiment of the present invention, as shown in fig. 1, the inner wall of the first output gear 204 is provided with a second engaging tooth 2042, and the first engaging ring 506 includes a second ring gear body 702, a connecting portion 5064, a first engaging tooth 5066 and a mounting portion 5068; is connected with one side of the second gear ring body 702 and is embedded in the first output gear 204; the first coupling teeth 5066 are provided on an outer wall of the connecting portion 5064 to be engaged with the second coupling teeth 2042; the mounting portion 5068 is connected to the other side of the second ring gear body 702 and is sleeved on the first bearing 504.

In this embodiment, the connection between the second ring gear body 702 and the first output gear 204 is achieved by providing the connecting portion 5064 and providing the first engaging tooth 5066 on the connecting portion 5064 such that the first engaging tooth 5066 can mesh with the second engaging tooth 2042 on the inner wall of the first output gear 204, so that the first output gear 204 and the first engaging ring gear 506 rotate synchronously.

Positioning of first split ring 506 is accomplished by providing mounting portion 5068 such that second ring gear body 702 may be supported on splined hub 502.

In one embodiment of the present invention, as shown in fig. 1, the case assembly 1 is for a transmission, and the case assembly 1 includes a first main case housing 1022, a second main case housing 1024, a sub case housing 104, and a first positioning pin 106. The first main box housing 1022 is provided with a first positioning hole. One side of the second main box housing 1024 is connected with the first main box housing 1022. The sub-tank housing 104 is connected to the other side of the second main tank housing 1024, and the sub-tank housing 104 is provided with a second positioning hole. One end of the first positioning pin 106 is inserted into the second positioning hole, and the other end thereof passes through the second main box housing 1024 and is inserted into the first positioning hole.

In this embodiment, the first main box housing 1022 and the second main box housing 1024 are fastened to enclose a main box cavity of the transmission, and the sub-box housing 104 is fastened to the second main box housing 1024 to enclose a sub-box space.

The first main box shell 1022 is provided with a first positioning hole, the auxiliary box shell 104 is provided with a second positioning hole, one end of the first positioning pin 106 is inserted into the second positioning hole, the other end of the first positioning pin penetrates through the second main box shell 1024 and then is inserted into the first positioning hole, so that the auxiliary box shell 104 and the first main box shell 1022 are positioned, when the power component in the auxiliary box cavity is positioned by the auxiliary box shell 104, the first positioning pin 106 transmits the positioning reference to the first main box shell 1022, and then the positioning reference is consistent with the positioning reference of the power transmission component in the main box cavity, the matching precision between the power transmission components in the main box cavity and the auxiliary box cavity is improved, and the positioning precision of the gearbox is further improved.

And the sub-tank shell 104 is directly positioned with the first main tank shell 1022, and is directly positioned with the first main tank shell 1022 with the sub-tank shell 104, and the second main tank shell 1024 is positioned with the first main tank shell 1022 again, so that the transmission of positioning references is reduced, the influence of errors between the positioning references on the positioning precision is reduced, the positioning precision between the sub-tank shell 104 and the first main tank shell 1022 is further improved, the position relation between the main tank cavity and the power transmission component in the sub-tank cavity is more accurate, and the smoothness and the power transmission efficiency of the power transmission of the gearbox are improved.

In one embodiment of the present invention, as shown in fig. 1, the first main box housing 1022 is provided with a third positioning hole; a fourth positioning hole is formed in one side of the second main box shell 1024; the shell assembly 1 further includes a second positioning pin 108, one end of the second positioning pin 108 is inserted into the third positioning hole, and the other end is inserted into the fourth positioning hole.

In this embodiment, two ends of the second positioning pin 108 are respectively inserted into the third positioning hole and the fourth positioning hole, so as to position the first main box housing 1022 and the second main box housing 1024, thereby improving the matching precision between the power transmission components in the main box cavity, and further improving the smoothness and power transmission efficiency of the transmission power of the transmission.

In an embodiment of the present invention, as shown in fig. 1, a fifth positioning hole is disposed on the second main box housing 1024, the fifth positioning hole is penetrated from one side of the second main box housing 1024 to the other side, and the first positioning pin 106 is inserted into the fifth positioning hole.

In this embodiment, the first positioning pin 106 is matched with the fifth positioning hole when passing through the second main box housing 1024, so that the first positioning pin 106 simultaneously realizes the positioning between the second main box housing 1024 and the first main box housing 1022, and between the sub-box housing 104 and the first main box housing 1022, and the positioning accuracy of the shell assembly 1 is improved, and the positioning structure of the shell assembly 1 is simplified.

In an embodiment of the present invention, the transmission further includes a housing assembly 1, and the intermediate shaft assembly 4, the main box output shaft assembly 2 and the input shaft assembly 3 are disposed in the housing assembly 1.

In an embodiment of the present invention, as shown in fig. 1 and 7, the counting ring gear 7 is used for a transmission, the counting ring gear 7 includes a second ring gear body 702 and a first bent portion 704, the first bent portion 704 is connected to the second ring gear body 702, a plurality of notches 706 are provided on the first bent portion 704, and the plurality of notches 706 are spaced along the first bent portion 704.

In this embodiment, since the first bending portion 704 is provided with the plurality of spaced notches 706, a mileage tooth is formed between the adjacent notches 706, and the sensor can detect the counting ring gear 7 by detecting the mileage tooth, thereby detecting the mileage of the vehicle.

Because the detection of the mileage can be realized by arranging the notches 706 at the intervals on the first bending part 704, the counting gear ring 7 can be processed and finished through punching and bending processes, the processing process of the counting gear ring 7 is simplified, and the processing cost of the counting gear ring 7 is reduced.

In an embodiment of the present invention, as shown in fig. 8 and 9, the second ring gear body 702 is annular, and the counter ring gear 7 further includes a second bent portion 708, and the second bent portion 708 is connected to the inner ring edge of the second ring gear body 702.

In this embodiment, the second bending portion 708 is disposed on the inner ring of the second gear ring body 702, and when the counting gear ring 7 is sleeved on the output shaft of the transmission, the second bending portion 708 increases the contact area between the counting gear ring 7 and the output shaft, so that the counting gear ring 7 and the output shaft rotate synchronously, and the rotation consistency between the counting gear ring 7 and the output shaft is improved.

And because the counting gear ring 7 and the output shaft synchronously rotate, the detection of the vehicle mileage is more accurate.

In an embodiment of the present invention, as shown in fig. 8 and 9, the first bending portion 704 is connected to an outer edge of the second ring gear body 702.

In this embodiment, the first bending portion 704 is connected to the outer edge of the second gear body 702, so that the first bending portion 704 can be formed by a bending process, thereby simplifying the processing process of the counter gear 7 and reducing the processing cost of the counter gear 7.

In an embodiment of the present invention, as shown in fig. 8 and 9, the second ring gear body 702, the first bent portion 704, and the second bent portion 708 are an integral structure.

In this embodiment, since the second gear body 702, the first bent portion 704, and the second bent portion 708 are an integral structure, the counter gear 7 may be a sheet metal part and processed by a bending process.

When processing count ring gear 7, notch 706 goes out on the sheet metal component that the unloading was accomplished now, then bends again and can obtain count ring gear 7 to this technology is convenient for realize the automation, and then makes the utility model provides a count ring gear 7 can have higher machining efficiency.

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 main box output shaft assembly comprises a main box output shaft and a first output gear, and the first output gear is sleeved on the main box output shaft;

the first synchronizer comprises a spline hub, a first bearing and a first joint gear ring, the spline hub is sleeved on the main box output shaft, the first bearing is sleeved on the spline hub, and the first joint gear ring is sleeved on the first bearing and connected with the first output gear.

2. The transmission of claim 1, wherein the first synchronizer further comprises:

a first synchronizing ring provided on a side of the first joint ring gear;

a first engaging sleeve disposed outside the splined hub and slidable relative to the first synchronizing ring and the first ring gear.

3. A gearbox according to claim 1, in which a second engagement tooth is provided on an inner wall of the first output gear, the first engagement ring gear comprising:

a first ring gear body;

the connecting part is connected with one side of the first gear ring body and embedded in the first output gear;

first engaging teeth provided on an outer wall of the connecting portion to be engaged with the second engaging teeth.

4. A transmission according to claim 3 wherein the first split ring gear further comprises:

the installation department, the installation department with the opposite side of first ring gear body is connected, and the cover is located on the first bearing.

5. The gearbox of any one of claims 1 to 4, further comprising:

the input shaft assembly comprises an input shaft and a constant-meshing input gear, and the constant-meshing input gear is sleeved on the input shaft;

the intermediate shaft assembly comprises an intermediate shaft, a constant mesh transmission gear and a first transmission gear, the constant mesh transmission gear is sleeved on the intermediate shaft and is meshed with the constant mesh input gear, and the first transmission gear is sleeved on the intermediate shaft;

the first output gear is meshed with the first transmission gear.

6. The gearbox of claim 5,

the number of the intermediate shaft assemblies is two, and the two intermediate shaft assemblies are respectively positioned on two sides of the main box output shaft assembly.

7. The gearbox of claim 5,

the intermediate shaft assembly further comprises a reverse gear transmission gear, and the reverse gear transmission gear is sleeved on the intermediate shaft;

the reverse gear idler wheel is meshed with the reverse gear transmission gear;

the main box output shaft assembly further comprises an elastic sleeve and a reverse gear output gear, the elastic sleeve is sleeved on the main box output shaft, and the reverse gear output gear is sleeved on the elastic sleeve and meshed with the reverse gear idle gear.

8. The transmission of claim 7, wherein the elastomeric sleeve comprises:

the rubber sleeve is sleeved on the main box output shaft;

the metal framework is sleeved on the outer side of the rubber sleeve.

9. The gearbox of any one of claims 1 to 4, further comprising a shell assembly, the shell assembly comprising:

the first main box shell is provided with a first positioning hole;

a second main tank case, one side of which is connected with the first main tank case;

the auxiliary box shell is connected with the other side of the second main box shell, and a second positioning hole is formed in the auxiliary box shell;

one end of the first positioning pin is inserted into the second positioning hole, and the other end of the first positioning pin penetrates through the second main box shell and then is inserted into the first positioning hole.

10. The gearbox of claim 9,

the first main box shell is provided with a third positioning hole;

a fourth positioning hole is formed in one side of the second main box shell;

the shell assembly further comprises a second positioning pin, one end of the second positioning pin is inserted into the third positioning hole, and the other end of the second positioning pin is inserted into the fourth positioning hole.

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