Gearbox

Abstract

The present invention provides a transmission, which includes a housing assembly, a main box output shaft assembly, a planetary gear assembly, a secondary box output shaft, and a second synchronizer. The housing assembly includes a main box housing and a secondary box housing, and the secondary box housing is fastened to the main box housing. The main box output shaft assembly includes a main box output shaft, and one end of the main box output shaft is disposed inside the main box housing. The planetary gear assembly is disposed inside the secondary box housing, and one end of the planetary gear assembly is connected to the other end of the main box output shaft. The secondary box output shaft is connected to the other end of the planetary gear assembly. The second synchronizer is disposed between the planetary gear assembly and the main box housing. In the transmission provided by the present invention, the second synchronizer is disposed between the planetary gear assembly and the main box housing. Since the external dimension of the second synchronizer is smaller than that of the planetary gear assembly, the synchronizer can be disposed at a position closer to the main box, reducing the dimension of the transmission in the axial direction, and thus reducing the space occupied by the transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and more particularly, to a transmission. Background Art

[0002] Currently, when a vehicle is running, the engine transmits power to the axle through the transmission, thereby achieving the driving of the vehicle.

[0003] In the related art, the transmission of a heavy-duty vehicle includes a main box and a auxiliary box to increase the number of gears of the transmission. The main box and the auxiliary box are distributed axially. Since the auxiliary box is added axially to the transmission, the length of the transmission in the axial direction is relatively long, occupying a large space. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] For this purpose, the present invention provides a transmission.

[0006] In view of this, the present invention provides a transmission, including a housing assembly, a main box output shaft assembly, a planetary gear assembly, an auxiliary box output shaft, and a second synchronizer. The housing assembly includes a main box housing and an auxiliary box housing, and the auxiliary box housing is fastened to the main box housing. The main box output shaft assembly includes a main box output shaft, and one end of the main box output shaft is disposed inside the main box housing. The planetary gear assembly is disposed inside the auxiliary box housing, and one end of the planetary gear assembly is connected to the other end of the main box output shaft. The auxiliary box output shaft is connected to the other end of the planetary gear assembly. The second synchronizer is disposed between the planetary gear assembly and the main box housing.

[0007] In the transmission provided by the present invention, the main box is connected to the engine of the vehicle, and the power output by the engine is transmitted from the main box to the auxiliary box, and then from the auxiliary box to the axle to achieve the driving of the vehicle.

[0008] The second synchronizer is disposed between the planetary gear assembly and the main box housing, so that the synchronizer of the auxiliary box is pre-positioned. Since the external dimension of the second synchronizer is smaller than the external dimension of the planetary gear assembly, the synchronizer can be disposed at a position closer to the main box. Even part of the second synchronizer can be disposed inside the main box. Compared with the case where the synchronizer of the auxiliary box is post-positioned, when the second synchronizer is disposed between the planetary gear assembly and the main box housing, the axial dimension of the transmission is more compact, the dimension of the transmission in the axial direction is reduced, and thus the space occupied by the transmission is reduced.

[0009] And since the dimension of the transmission in the axial direction is reduced, the length of the auxiliary box output shaft inside the transmission is shortened, so that the strength of the auxiliary box output shaft is improved, the radial runout of the auxiliary box output shaft is reduced, and the overall quality of the transmission is improved.

[0010] In addition, the transmission in the above technical solution provided by the present invention may further have the following additional technical features:

[0011] In a technical solution of the present invention, the planetary gear assembly includes an internal gear ring, a sun gear, a planet carrier, and a plurality of planetary gears. The sun gear is connected to the other end of the main box output shaft. The planet carrier is connected to the auxiliary box output shaft. The plurality of planetary gears are arranged on the planet carrier, distributed circumferentially around the sun gear, and mesh with both the internal gear ring and the sun gear simultaneously.

[0012] In this technical solution, the sun gear is connected to the main box output shaft, and the planet carrier is connected to the auxiliary box output shaft. The power is transmitted from the main box output shaft to the planetary gear assembly, and then to the auxiliary box output shaft, and further to the axle to output power.

[0013] The sun gear meshes with a plurality of planetary gears simultaneously. The plurality of planetary gears are installed on the planet carrier and mesh with the internal gear ring. When the sun gear rotates, it drives the planetary gears to rotate, and then drives the planet carrier to rotate. The planet carrier then drives the auxiliary box output shaft to rotate.

[0014] When the rotational speed of the sun gear is constant, if the internal gear ring is fixed, the rotational speed of the planet carrier is the first rotational speed, and the auxiliary box is in the first gear; if the internal gear ring is connected to the planet carrier, the rotational speed of the planet carrier is the second rotational speed, and the auxiliary box is in the second gear.

[0015] In a technical solution of the present invention, the second synchronizer includes a second engaging sleeve, a second engaging gear ring, and a third engaging gear ring. The second engaging sleeve is connected to the internal gear ring; the second engaging gear ring is connected to the housing assembly and is located on one side of the second engaging sleeve; the third engaging gear ring is connected to the planet carrier and is located on the other side of the second engaging sleeve.

[0016] In this technical solution, the second synchronizer includes a second engaging sleeve, a second engaging gear ring, and a third engaging gear ring. The second engaging gear ring and the third engaging gear ring are respectively located on both sides of the second engaging sleeve. When the second engaging sleeve slides to the position of the second engaging gear ring, the second engaging sleeve meshes with the second engaging gear ring, and the internal gear ring is connected to the housing assembly, thereby fixing the internal gear ring. The rotational speed of the planet carrier is the first rotational speed, and the auxiliary box is in the first gear; when the second engaging sleeve slides to the third engaging gear ring, the second engaging sleeve meshes with the third engaging gear ring, and the internal gear ring is connected to the planet carrier. The rotational speed of the planet carrier is the second rotational speed, and the auxiliary box is in the second gear.

[0017] In a technical solution of the present invention, the sun gear is a gear shaft, connected to the other end of the main box output shaft, and the second synchronizer is sleeved outside the gear shaft.

[0018] In this technical solution, the sun gear is a gear shaft, which can extend into the main case, thereby shortening the length of the output shaft of the main case and enhancing the strength of the output shaft of the main case. And the second synchronizer is sleeved on the gear shaft, and the second synchronizer can be closer to the main case, thereby shortening the axial dimension of the transmission.

[0019] In a technical solution of the present invention, the sun gear is a gear sleeved on the other end of the output shaft of the main case, and the second synchronizer is sleeved on the outside of the output shaft of the main case.

[0020] In this technical solution, the sun gear is a gear sleeved on the output shaft of the main case, thereby simplifying the processing technology of the output shaft of the main case. And the second synchronizer is sleeved on the output shaft of the main case, which can make part of the second synchronizer enter the main case, further shortening the axial dimension of the transmission.

[0021] In a technical solution of the present invention, a bearing chamber is provided on the main case housing; the transmission further includes a second bearing embedded in the bearing chamber; the planet carrier includes a first planet carrier and a second planet carrier, the first planet carrier is located on one side of a plurality of planet gears and is inserted into the inner ring of the second bearing, and the second planet carrier is located on the other side of the plurality of planet gears and is connected to the output shaft of the auxiliary case.

[0022] In this technical solution, by installing the second bearing on the main case housing, the support for the planet carrier is realized, thereby making the rotation of the output shaft of the main case more stable.

[0023] In a technical solution of the present invention, the second synchronizer is sleeved on the first planet carrier.

[0024] In this technical solution, the second synchronizer is sleeved on the first planet carrier, realizing the support for the second synchronizer and making the position of the second synchronizer and the planet carrier more precise, thereby enhancing the smoothness of shifting of the auxiliary case.

[0025] In a technical solution of the present invention, the transmission further includes an input shaft assembly and an intermediate shaft assembly; the input shaft assembly includes an input shaft and a constant-mesh input gear sleeved on the input shaft; the intermediate shaft assembly includes an intermediate shaft, a constant-mesh drive gear and a first drive gear, the constant-mesh drive gear is sleeved on the intermediate shaft and meshes with the constant-mesh input gear, and the first drive gear is sleeved on the intermediate shaft; the output shaft assembly of the main case further includes a first output gear sleeved on the output shaft of the main case and meshing with the first drive gear.

[0026] In this technical solution, the input shaft can be connected to the engine of the vehicle, and the power output by the engine is transmitted to the axle through the input shaft, the intermediate shaft and the output shaft to realize the driving of the vehicle and control the speed of the vehicle.

[0027] In a technical solution of the present invention, the transmission further includes a first synchronizer, and the first synchronizer includes a spline hub, a first bearing, a first engaging gear ring, a first synchronizing ring, and a first engaging sleeve; the spline hub is sleeved on the output shaft of the main case; the first bearing is sleeved on the spline hub; the first engaging gear ring is sleeved on the first bearing and is connected to the first output gear; the first synchronizing ring is arranged on the side of the first engaging gear ring; the first engaging sleeve is arranged outside the spline hub and can slide relative to the first synchronizing ring and the first engaging gear ring.

[0028] In this technical solution, the first synchronizer includes a spline hub, a first bearing, and a first engaging gear ring. The first engaging gear ring is sleeved on the spline hub through a bearing and is connected to the first gear, and can rotate together with the first gear.

[0029] Since the first engaging gear ring is sleeved on the spline hub, the coaxiality of the first engaging gear ring and the first engaging sleeve is improved, making the dimension of the first engaging gear ring relative to the first engaging sleeve more accurate. Furthermore, during the shifting process, the first engaging sleeve can smoothly move to the outside of the first engaging gear ring and cooperate with the engaging teeth of the first engaging gear ring, reducing the probability of jamming during the shifting process and improving the smoothness of gear shifting of the transmission.

[0030] The first engaging sleeve is sleeved outside the spline hub, and the first engaging gear ring is also sleeved outside the spline hub, making the positioning reference of the first engaging sleeve and the first engaging gear ring unified. Compared with the first engaging gear ring being sleeved on the first output gear, the coaxiality between the first engaging gear ring and the first engaging sleeve is further improved, and the deviation of the first engaging gear ring relative to the first engaging sleeve is smaller. Furthermore, during the shifting process, the first engaging sleeve can smoothly move to the outside of the first engaging gear ring and cooperate with the engaging teeth of the first engaging gear ring, reducing the probability of jamming during the shifting process and improving the smoothness of gear shifting of the transmission.

[0031] In a technical solution of the present invention, second engaging teeth are provided on the inner wall of the first output gear. The first engaging gear ring includes a first gear ring body, a connecting portion, first engaging teeth, and a mounting portion; it is connected to one side of the first gear ring body and is embedded in the first output gear; the first engaging teeth are provided on the outer wall of the connecting portion and mesh with the second engaging teeth; the mounting portion is connected to the other side of the first gear ring body and is sleeved on the first bearing.

[0032] In this technical solution, by providing the connecting portion and arranging the first engaging teeth on the connecting portion, the first engaging teeth can mesh with the second engaging teeth on the inner wall of the first output gear, thereby realizing the connection between the first gear ring body and the first output gear and enabling the first output gear and the first engaging gear ring to rotate synchronously.

[0033] By providing the mounting portion, the first gear ring body can be supported on the spline hub, thereby realizing the positioning of the first engaging gear ring.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0036] Figure 1 A cross-sectional view of a transmission according to an embodiment of the present invention is shown;

[0037] Figure 2 A partial schematic view of a secondary transmission of a transmission according to an embodiment of the present invention is shown;

[0038] Figure 3 A partial schematic view at a first synchronizer according to an embodiment of the present invention is shown;

[0039] Figure 4 A partial schematic view at a first engaging gear ring according to an embodiment of the present invention is shown;

[0040] Figure 5 A partial schematic view at a reverse output gear according to an embodiment of the present invention is shown;

[0041] Figure 6 A left view of a transmission according to an embodiment of the present invention is shown;

[0042] Figure 7 A schematic structural view of a mileage gear according to an embodiment of the present invention is shown;

[0043] Figure 8 A front view of a mileage gear according to an embodiment of the present invention is shown;

[0044] Figure 9 A cross-sectional view of a mileage gear according to an embodiment of the present invention is shown.

[0045] Wherein, Figures 1 to 9 The corresponding relationship between the reference numerals in and the component names is:

[0046] 1 Housing assembly, 102 Main housing, 1022 First main housing, 1024 Second main housing, 104 Auxiliary housing, 106 First positioning pin, 108 Second positioning pin, 2 Main housing output shaft assembly, 202 Main housing 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 plain bearing, 3 Input shaft assembly, 302 Input shaft, 304 Constant mesh input gear, 306 Second plain bearing, 4 Intermediate shaft assembly, 402 Intermediate shaft, 404 Constant mesh drive gear, 406 First drive gear, 408 Reverse gear drive gear, 410 Reverse idler gear, 5 First synchronizer, 502 Spline hub, 504 First bearing, 506 First engaging gear ring, 5062 First gear ring body, 5064 Connecting part, 5066 First engaging tooth, 5068 Mounting part, 508 First synchronizing ring, 510 First engaging sleeve, 6 Planetary gear assembly, 602 Internal gear ring, 604 Sun gear, 606 Planet carrier, 608 First planet carrier, 610 Second planet carrier, 612 Planet gear, 614 Second bearing, 7 Counting gear ring, 702 Second gear ring body, 704 First bent part, 706 Notch, 708 Second bent part, 8 Second synchronizer, 802 Second engaging sleeve, 804 Second engaging gear ring, 806 Third engaging gear ring, 902 Auxiliary housing output shaft, 904 First filter component, 906 Second filter component, 908 Magnetic part. Detailed implementation manners

[0047] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0048] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0049] The following refers to Figures 1 to 9 Describe a transmission according to some embodiments of the present invention.

[0050] In one embodiment of the present invention, as Figure 1 and Figure 2As shown in the figure, the transmission includes a housing assembly 1, a main box output shaft assembly 2, a planetary gear assembly 6, a secondary box output shaft 902, and a second synchronizer 8. The housing assembly 1 includes a main box housing 102 and a secondary box housing 104, and the secondary 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, and one end of the main box output shaft 202 is disposed inside the main box housing 102. The planetary gear assembly 6 is disposed inside the secondary box housing 104, and one end of the planetary gear assembly 6 is connected to the other end of the main box output shaft 202. The secondary box output shaft 902 is connected to the other end of the planetary gear assembly 6. The second synchronizer 8 is disposed between the planetary gear assembly 6 and the main box housing 102.

[0051] In this embodiment, the main box is connected to the vehicle's engine, and the power output by the engine is transmitted from the main box to the secondary box and then from the secondary box to the axle to drive the vehicle.

[0052] The second synchronizer 8 is disposed between the planetary gear assembly 6 and the main box housing 102, making the synchronizer of the secondary box front-mounted. Since the external dimension of the second synchronizer 8 is smaller than that of the planetary gear assembly 6, the synchronizer can be disposed closer to the main box. Even part of the second synchronizer 8 can be disposed inside the main box. Compared with the rear-mounted synchronizer of the secondary box, the second synchronizer 8 disposed between the planetary gear assembly 6 and the main box housing 102 makes the transmission more compact in the axial dimension, reduces the axial dimension of the transmission, and thus reduces the space occupied by the transmission.

[0053] Moreover, since the axial dimension of the transmission is reduced, the length of the secondary box output shaft 902 inside the transmission is shortened, improving the strength of the secondary box output shaft 902, reducing the radial runout of the secondary box output shaft 902, and enhancing the overall quality of the transmission.

[0054] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, the planetary gear assembly 6 includes an internal gear ring 602, a sun gear 604, a planet carrier 606, and a plurality of planet gears 612. The sun gear 604 is connected to the other end of the main box output shaft 202. The planet carrier 606 is connected to the secondary box output shaft 902. The plurality of planet gears 612 are disposed on the planet carrier 606, distributed circumferentially around the sun gear 604, and meshed with both the internal gear ring 602 and the sun gear 604 simultaneously.

[0055] In this embodiment, the sun gear 604 is connected to the main box output shaft 202, and the planet carrier 606 is connected to the secondary box output shaft 902. The power is transmitted from the main box output shaft 202 to the planetary gear assembly 6 and then to the secondary box output shaft 902, and then the power is output to the axle.

[0056] The sun gear 604 meshes with a plurality of planet gears 612 simultaneously. The plurality of planet gears 612 are mounted on the planet carrier 606 and mesh with the internal gear ring 602. When the sun gear 604 rotates, it drives the planet gears 612 to rotate, thereby driving the planet carrier 606 to rotate. The planet carrier 606 then drives the output shaft 902 of the auxiliary box to rotate.

[0057] When the rotational speed of the sun gear 604 is constant and the internal gear ring 602 is fixed, the rotational speed of the planet carrier 606 is the first rotational speed, and the auxiliary box is in the first gear position; when the internal gear ring 602 is connected to the planet carrier 606, the rotational speed of the planet carrier 606 is the second rotational speed, and the auxiliary box is in the second gear position.

[0058] In one embodiment of the present invention, as Figure 1 and Figure 2 shown, the second synchronizer 8 includes a second engaging sleeve 802, a second engaging gear ring 804, and a third engaging gear ring 806. The second engaging sleeve 802 is connected to the internal gear ring 602; the second engaging gear ring 804 is connected to the housing assembly 1 and is located on one side of the second engaging sleeve 802; the third engaging gear ring 806 is connected to the planet carrier 606 and is located on the other side of the second engaging sleeve 802.

[0059] In this embodiment, the second synchronizer 8 includes a second engaging sleeve 802, a second engaging gear ring 804, and a third engaging gear ring 806. The second engaging gear ring 804 and the third engaging gear ring 806 are respectively located on both sides of the second engaging sleeve 802. When the second engaging sleeve 802 slides to the second engaging gear ring 804, the second engaging sleeve 802 meshes with the second engaging gear ring 804, and the internal gear ring 602 is connected to the housing assembly 1, thereby fixing the internal gear ring 602. The rotational speed of the planet carrier 606 is the first rotational speed, and the auxiliary box is in the first gear position; when the second engaging sleeve 802 slides to the third engaging gear ring 806, the second engaging sleeve 802 meshes with the third engaging gear ring 806, and the internal gear ring 602 is connected to the planet carrier 606. The rotational speed of the planet carrier 606 is the second rotational speed, and the auxiliary box is in the second gear position.

[0060] In one embodiment of the present invention, as Figure 1 and Figure 2 shown, the sun gear 604 is a gear shaft and is connected to the other end of the main box output shaft 202. The second synchronizer 8 is sleeved outside the gear shaft.

[0061] In this embodiment, the sun gear 604 is a gear shaft. The gear shaft can extend into the main box, thereby shortening the length of the main box output shaft 202 and enhancing the strength of the main box output shaft 202. And the second synchronizer 8 is sleeved on the gear shaft. The second synchronizer 8 can be closer to the main box, thereby shortening the axial dimension of the transmission.

[0062] In an embodiment of the present invention, the sun gear 604 is a gear sleeved on the other end of the main case output shaft 202, and the second synchronizer 8 is sleeved on the outside of the main case output shaft 202.

[0063] In this embodiment, the sun gear 604 is a gear sleeved on the main case output shaft 202, thereby simplifying the processing technology of the main case output shaft 202. And the second synchronizer 8 is sleeved on the main case output shaft 202, which can make part of the second synchronizer 8 enter the main case, further shortening the axial dimension of the transmission.

[0064] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, a bearing chamber is provided on the main case housing 102; the transmission further includes a second bearing 614 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 is located on one side of the plurality of planet gears 612 and is inserted into the inner ring of the second bearing 614, and the second planet carrier 610 is located on the other side of the plurality of planet gears 612 and is connected to the secondary case output shaft 902.

[0065] In this embodiment, by installing the second bearing 614 on the main case housing 102, the support for the planet carrier 606 is realized, thereby making the rotation of the main case output shaft 202 more stable.

[0066] In an embodiment of the present invention, as Figure 1 and Figure 2 shown, the second synchronizer 8 is sleeved on the first planet carrier 608.

[0067] In this embodiment, the second synchronizer 8 is sleeved on the first planet carrier 608, realizing the support for the second synchronizer 8 and making the position of the second synchronizer 8 and the planet carrier 606 more accurate, thereby improving the smoothness of the secondary case shifting.

[0068] In an embodiment of the present invention, as Figure 1 and Figure 3 shown, the transmission includes a main case output shaft assembly 2 and a first synchronizer 5. The main case output shaft assembly 2 includes a main case output shaft 202 and a first output gear 204, and the first output gear 204 is sleeved on the main case 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 case 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 is connected to the first output gear 204.

[0069] In this embodiment, the first synchronizer 5 includes a spline hub 502, a first bearing 504, and a first engaging gear ring 506. The first engaging gear ring 506 is sleeved on the spline hub 502 through a bearing and is connected to the first gear, and can rotate together with the first gear.

[0070] Since the first engaging gear ring is sleeved on the spline hub 502, the coaxiality of the first engaging gear ring and the first engaging sleeve 510 is improved, making the relative dimensions of the first engaging gear ring 506 with respect to the first engaging sleeve 510 more accurate. Furthermore, during the shifting process, the first engaging sleeve 510 can smoothly move to the outside of the first engaging gear ring 506 and cooperate with the engaging teeth of the first engaging gear ring 506, reducing the probability of jamming during the shifting process and improving the smoothness of gear shifting in the transmission.

[0071] In an embodiment of the present invention, as Figure 1 and Figure 3 shown, the first synchronizer 5 further includes a first synchronizing ring 508 and a first engaging sleeve 510; the first synchronizing ring 508 is arranged on the side of the first engaging gear ring 506; the first engaging sleeve 510 is arranged on the outside of the spline hub 502 and can slide relative to the first synchronizing ring 508 and the first engaging gear ring 506.

[0072] In this embodiment, the first engaging sleeve 510 is sleeved on the outside of the spline hub 502, and the first engaging gear ring 506 is also sleeved on the outside of the spline hub 502, making the positioning reference of the first engaging sleeve 510 and the first engaging gear ring 506 unified. Compared with the first engaging gear ring 506 being 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, and the deviation of the first engaging gear ring 506 with respect to the first engaging sleeve 510 is smaller. Furthermore, during the shifting process, the first engaging sleeve 510 can smoothly move to the outside of the first engaging gear ring 506 and cooperate with the engaging teeth of the first engaging gear ring 506, reducing the probability of jamming during the shifting process and improving the smoothness of gear shifting in the transmission.

[0073] In an embodiment of the present invention, as Figure 1 and Figure 4 shown, a second engaging tooth 2042 is provided on the inner wall of the first output gear 204. The first engaging gear ring 506 includes a first gear ring body 5062, a connecting portion 5064, and a first engaging tooth 5066; the connecting portion 5064 is connected to one side of the first gear ring body 5062 and is embedded in the first output gear 204; the first engaging tooth 5066 is provided on the outer wall of the connecting portion 5064 and meshes with the second engaging tooth 2042.

[0074] In this embodiment, by providing the connecting portion 5064 and providing the first engaging teeth 5066 on the connecting portion 5064, the first engaging teeth 5066 can be engaged with the second engaging teeth 2042 on the inner wall of the first output gear 204, thereby realizing the connection between the first ring gear body 5062 and the first output gear 204, and enabling the first output gear 204 and the first engaging ring gear 506 to rotate synchronously.

[0075] In an embodiment of the present invention, as Figure 1 and Figure 4 shown, the first engaging ring gear 506 further includes a mounting portion 5068. 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.

[0076] In this embodiment, by providing the mounting portion 5068, the first ring gear body 5062 can be supported on the spline hub 502, thereby realizing the positioning of the first engaging ring gear 506.

[0077] In an embodiment of the present invention, as Figure 1 and Figure 5 shown, the transmission includes an intermediate shaft assembly 4, a reverse idler gear 410, and a main box output shaft assembly 2. The intermediate shaft assembly 4 includes an intermediate shaft 402 and a reverse transmission gear 408. The reverse transmission gear 408 is sleeved on the intermediate shaft 402. The reverse idler gear 410 is engaged with the reverse transmission gear 408. The main box output shaft assembly 2 includes a main box output shaft 202, an elastic sleeve 206, and a reverse output gear 208. The elastic sleeve 206 is sleeved on the main box output shaft 202. The reverse output gear 208 is sleeved on the elastic sleeve 206 and is engaged with the reverse idler gear 410.

[0078] In this embodiment, the reverse output gear 208 is engaged with the reverse idler gear, and the reverse idler gear realizes the support of the reverse output gear 208; the reverse output gear 208 is sleeved on the main box output shaft 202, and an elastic sleeve 206 is provided between the main box output shaft 202 and the reverse output gear 208, so that the reverse output gear 208 can support the main box output shaft 202, thereby enabling the reverse output gear 208 to assist the radial force received by the main box output shaft 202, reducing the radial runout of the main box output shaft 202, and improving the stability of the transmission.

[0079] And since the rotation speed of the reverse output gear 208 is relatively slow, the friction between the output shaft and the elastic sleeve 206 is reduced, thereby reducing the resistance applied by the elastic sleeve 206 to the output shaft. Furthermore, while improving the transmission efficiency, the wear of the elastic sleeve 206 is reduced, and the service life of the elastic sleeve 206 is prolonged.

[0080] In an embodiment of the present invention, as Figure 1 and Figure 5As shown, the elastic sleeve 206 includes a rubber sleeve 2062 and a metal skeleton 2064; the rubber sleeve 2062 is sleeved on the main box output shaft 202; the metal skeleton 2064 is sleeved on the outside of the rubber sleeve 2062.

[0081] In this embodiment, the elastic sleeve 206 includes a rubber sleeve 2062 and a metal skeleton 2064. The rubber sleeve 2062 can enhance the elasticity of the elastic sleeve 206, thereby making the rotation of the main box output shaft 202 more flexible. The metal skeleton 2064 can enhance the strength of the elastic sleeve 206, thereby enhancing the supporting effect of the reverse gear output gear 208 on the main box output shaft 202.

[0082] In an embodiment of the present invention, as Figure 1 shown, the transmission includes an input shaft assembly 3, an intermediate shaft assembly 4, and a main box 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 includes 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 meshes with the constant-mesh input gear 304. 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 meshes with the first transmission gear 406. Among them, the constant-mesh input gear 304, the first transmission gear 406, and the first output gear 204 are helical gears. The helix direction of the constant-mesh input gear 304 is opposite to that of the first transmission gear 406, and the helix direction of the constant-mesh input gear 304 is opposite to that of the first output gear 204.

[0083] In this embodiment, the input shaft 302 can be connected to the engine of the vehicle, and the power output by the engine is transmitted to the axle through the input shaft 302, the intermediate shaft 402, and the output shaft to realize the driving of the vehicle and control the speed of the vehicle.

[0084] During the power transmission process of the transmission, since the constant-mesh input gear 304, the first transmission gear 406, and the first output gear 204 are helical gears, the constant-mesh input gear 304, the first transmission gear 406, and the first output gear 204 can bear greater loads, thereby enabling the transmission to be suitable for vehicles with a larger load capacity and expanding the application range of the transmission.

[0085] And since the constantly meshing input gear 304, the first transmission gear 406 and the first output gear 204 can bear greater loads, the transmission is more stable when transmitting power, thereby improving the fitting accuracy between the gears, reducing the wear between the gears, and further prolonging the service life of the constantly meshing input gear 304, the first transmission gear 406 and the first output gear 204, and enhancing the quality of the transmission.

[0086] And since the transmission is more stable when transmitting power, the noise generated by the transmission can be reduced, making the vehicle quieter during driving.

[0087] Since the helix direction of the constantly meshing input gear 304 is opposite to that of the first transmission gear 406, and the helix direction of the constantly meshing input gear 304 is opposite to that of the first output gear 204, during the operation of the transmission, the axial forces on the input shaft 302 and the main box output shaft 202 are opposite, so that the forces on the input shaft 302 and the main box output shaft 202 cancel each other out, making the positioning between the gears more accurate, further reducing the wear between the gears, and prolonging the service life of the constantly meshing input gear 304, the first transmission gear 406 and the first output gear 204.

[0088] Moreover, since the forces on the input shaft 302 and the main box output shaft 202 cancel each other out, the axial forces on the bearings supporting the input shaft 302 and the main box output shaft 202 are reduced, so that the inner and outer rings of the bearings rotate in the normal position, reducing the friction of the bearings themselves, and further prolonging the service life of the bearings.

[0089] Since the friction of the bearings themselves is reduced, the loss of the transmission can also be reduced, and the efficiency of power transmission of the transmission can be improved.

[0090] In an embodiment of the present invention, as Figure 1 shown, the number of the intermediate shaft assemblies 4 is two groups, and the two groups of intermediate shaft assemblies 4 are respectively located on both sides of the main box output shaft assembly 2.

[0091] In this embodiment, the two groups of intermediate shaft assemblies 4 are respectively located on both sides of the main box output shaft assembly 2, and the two groups of intermediate shaft assemblies 4 simultaneously transmit power to the main box output shaft assembly 2, so that the first output gear 204 of the main box output shaft assembly 2 is simultaneously subjected to two radial forces in opposite directions. While supporting the first output gear 204, the two radial forces on the first output gear 204 cancel each other out, reducing the radial runout of the first output gear 204, and further making the operation of the transmission more stable.

[0092] Moreover, since the two intermediate shaft assemblies 4 support the first output gear 204 simultaneously, the first output gear 204 no longer relies on the main case output shaft 202, thereby reducing the friction between the main case output shaft 202 and the first gear and extending the service life of the main case output shaft assembly 2.

[0093] In one embodiment of the present invention, as Figure 1 shown, the constantly meshing input gear 304 is right-handed, the first transmission gear 406 is left-handed, and the first output gear 204 is left-handed.

[0094] In this embodiment, the constantly meshing input gear 304 is right-handed, the first transmission gear 406 is left-handed, and the first output gear 204 is left-handed. During the operation of the transmission, the force direction of the input shaft 302 is from the input shaft 302 to the main case output shaft 202, and the force direction of the main case output shaft 202 is from the main case output shaft 202 to the input shaft 302. This makes the force directions of the input shaft 302 and the main case output shaft 202 opposite, and then offsets each other, making the positioning between the gears more accurate, further reducing the wear between the gears, and extending the service life of the constantly meshing input gear 304, the first transmission gear 406, and the first output gear 204.

[0095] In one embodiment of the present invention, as Figure 1 shown, an installation groove is provided at one end of the main case output shaft 202. The transmission further includes a first flat bearing 210, which is disposed in the installation groove. One end of the input shaft 302 is inserted into the installation groove, and the end of the input shaft 302 is connected to the first flat bearing 210.

[0096] In this embodiment, since the first flat bearing 210 is provided between the input shaft 302 and the main case output shaft 202, when the force directions of the input shaft 302 and the main case output shaft 202 are opposite, the first flat bearing 210 can support the input shaft 302 and the main case output shaft 202. Thus, while ensuring the accurate positions of the input shaft 302 and the main case output shaft 202, the friction between the end faces of the input shaft 302 and the main case output shaft 202 is reduced, thereby reducing the wear of the input shaft 302 and the main case output shaft 202 and extending the service life of the input shaft 302 and the main case output shaft 202.

[0097] In one embodiment of the present invention, as Figure 1 shown, an installation platform is provided on the input shaft 302. The transmission further includes a second flat bearing 306, which is sleeved on the installation platform. The main case input shaft 302 is sleeved on the installation platform, and the end face of the main case input shaft 302 is in contact with the second flat bearing 306.

[0098] In this embodiment, by arranging a second plain bearing 306 between the input shaft 302 and the main case output shaft 202, when the force directions of the input shaft 302 and the main case output shaft 202 are opposite, the second plain bearing 306 can support the input shaft 302 and the main case output shaft 202. Furthermore, while ensuring the accurate positions of the input shaft 302 and the main case output shaft 202, the friction between the end faces of the input shaft 302 and the main case output shaft 202 can be reduced, thereby reducing the wear of the input shaft 302 and the main case output shaft 202 and extending the service life of the input shaft 302 and the main case output shaft 202.

[0099] In an embodiment of the present invention, as Figure 1 shown, the transmission further includes a first synchronizer 5. The first synchronizer 5 is sleeved on the main case output shaft 202 and is adapted to the input shaft 302 or the first transmission gear 406 to achieve gear selection.

[0100] In this embodiment, by arranging the first synchronizer 5 on the main case output shaft 202, gear selection is achieved.

[0101] In an embodiment of the present invention, as Figure 6 shown, the transmission includes a housing assembly 1, a pump assembly, and a second filtering component 906. The pump assembly is arranged on the housing assembly 1. The pump assembly includes an oil pump and a first filtering component 904. The first filtering component 904 is arranged on the oil pump to filter the engine oil passing through the oil pump. The second filtering component 906 is connected to the pump assembly to filter the engine oil passing through the oil pump again.

[0102] In this embodiment, by arranging the first filtering component 904 on the oil pump, when the engine oil passes through the oil pump, it will be filtered for the first time, thereby reducing the impurities in the engine oil. After the engine oil passes through the oil pump, it will pass through the second filtering component 906. The second filtering component 906 can filter the engine oil again to further reduce the impurities in the engine oil.

[0103] The engine oil that has been filtered twice is then delivered to the gears or bearings to achieve lubrication and cooling of the gears or bearings. Moreover, since the engine oil moving to the gears or bearings contains fewer impurities, it will not hinder the rotation of the bearings or gears, reducing the movement resistance of the transmission, and thus making the rotation of the bearings or gears smoother.

[0104] The filtering level of the second filtering component 906 is higher than that of the first filtering component 904, that is, the volume of impurities that the second filtering component 906 can filter is smaller than the volume of impurities that the first filtering component 904 can filter.

[0105] The first filtering component 904 first filters out the impurities with relatively large volumes, and then the second filtering component 906 filters out the impurities with relatively small volumes, thereby achieving double filtering of the engine oil.

[0106] In one embodiment of the present invention, as Figure 6 shown, a first mounting groove is provided on the housing assembly 1, and the pump assembly is mounted in the first mounting groove.

[0107] In this embodiment, by providing the first mounting groove on the housing assembly 1, the installation and positioning of the pump assembly are realized, such that one end of the pump assembly is inside the housing assembly 1, and an oil inlet is provided at this end to suck the engine oil in the housing assembly 1, and the other end is outside the housing assembly 1 and serves as an oil outlet to convey the first-filtered engine oil to the second filtering component 906.

[0108] In one embodiment of the present invention, as Figure 6 shown, the housing assembly 1 is provided with a second mounting groove, and the second filtering component 906 is mounted in the second mounting groove.

[0109] In this embodiment, by providing the second mounting groove on the housing assembly 1, the installation and positioning of the second filtering component 906 are realized, such that the second filtering component 906 can be stably connected to the pump assembly to achieve the secondary filtration of the engine oil.

[0110] In one embodiment of the present invention, as Figure 6 shown, the transmission further includes a magnetic member 908, and the magnetic member 908 is connected to the housing assembly 1 and is located on the side of the first filtering component 904 and / or the second filtering component 906.

[0111] In this embodiment, by providing the magnetic member 908 on the side of the first filtering component 904 and / or the second filtering component 906, the magnetic member 908 can adsorb the iron filings in the engine oil passing through the first filtering component 904 and / or the second filtering component 906, further improving the filtering effect of the first filtering component 904 and / or the second filtering component 906.

[0112] In one 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 is connected to the second filtering component 906.

[0113] In this embodiment, the two ends of the pipeline are respectively connected to the oil pump and the second filtering component 906, such that the engine oil can enter the second filtering component 906 from the oil pump through the pipeline, and then the secondarily filtered engine oil is sent into the engine oil path of the transmission to achieve the lubrication of the gears and bearings.

[0114] The magnetic member 908 is located on the side of the pipeline, so that the adsorbed iron filings are deposited in the pipeline, and the impurities filtered out by the second filtering component 906 are also deposited in the pipeline. The pipeline is located outside the housing assembly 1, which is convenient for disassembling and cleaning the impurities accumulated in the pipeline.

[0115] In an embodiment of the present invention, the first filtering component 904 is disposed at the oil inlet of the oil pump.

[0116] In this embodiment, the first filtering component 904 is located at the oil inlet of the oil pump, so that the impurities filtered out by the first filtering component 904 can flow back into the fuel tank and be discharged from the gearbox together with the engine oil when the engine oil is replaced.

[0117] In an embodiment of the present invention, as Figure 1 shown, the gearbox further includes a main box input shaft 302, and a first oil passage is provided on the main box input shaft 302, and the first oil passage is connected to the second filtering component 906.

[0118] In this embodiment, the oil pump sends the engine oil filtered by the first filtering component 904 and the second filtering component 906 into the first oil passage on the main box input shaft 302, so as to lubricate the constant-mesh input gear 304.

[0119] In an embodiment of the present invention, as Figure 1 shown, the gearbox further includes a main box output shaft 202 and a secondary box output shaft 902; a second oil passage is provided on the main box output shaft 202, and one end of the second oil passage is connected to the first oil passage; a third oil passage is provided on the secondary box output shaft 902, and the third oil passage is connected to the other end of the second oil passage.

[0120] In this embodiment, after the engine oil passes through the first oil passage, it enters the second oil passage provided on the main box output shaft 202 to lubricate the first output gear 204 and the reverse output gear 208. After the engine oil passes through the second oil passage, it then flows into the third oil passage provided on the secondary box output shaft 902, thereby lubricating the secondary box planetary gear assembly.

[0121] The first oil passage and the second oil passage are connected by a joint, and the second oil passage and the third oil passage are connected by a joint.

[0122] In an embodiment of the present invention, as Figure 1 shown, the gearbox further includes an input shaft assembly 3 and an intermediate shaft assembly 4; 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 includes an intermediate shaft 402, a constant-mesh driving gear 404 and a first driving gear 406, the constant-mesh driving gear 404 is sleeved on the intermediate shaft 402 and meshes with the constant-mesh input gear 304, and the first driving 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 meshes with the first driving gear 406.

[0123] In this embodiment, the input shaft 302 can be connected to the engine of the vehicle, and the power output by the engine is transmitted to the 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.

[0124] In an embodiment of the present invention, as Figure 1 shown, the transmission further includes a first synchronizer 5, and the first synchronizer 5 includes a spline hub 502, a first bearing 504, a first engaging gear 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 is connected to the first output gear 204; the first synchronizing ring 508 is arranged on the side of the first engaging gear ring 506; the first engaging sleeve 510 is arranged outside the spline hub 502 and can slide relative to the first synchronizing ring 508 and the first engaging gear ring 506.

[0125] In this embodiment, the first synchronizer 5 includes a spline hub 502, a first bearing 504 and a first engaging gear ring 506. The first engaging gear ring 506 is sleeved on the spline hub 502 through a bearing and is connected to the first gear, and can rotate together with the first gear.

[0126] Since the first engaging gear ring is sleeved on the spline hub 502, the coaxiality of the first engaging gear ring and the first engaging sleeve 510 is improved, so that the relative dimension of the first engaging gear ring 506 to the first engaging sleeve 510 is more accurate. Furthermore, during the shifting process, the first engaging sleeve 510 can smoothly move to the outside of the first engaging gear ring 506 and cooperate with the engaging teeth of the first engaging gear ring 506, reducing the probability of jamming during the shifting process and improving the smoothness of gear shifting of the transmission.

[0127] The first engaging sleeve 510 is sleeved outside the spline hub 502, and the first engaging gear ring 506 is also sleeved outside the spline hub 502, so that the positioning reference of the first engaging sleeve 510 and the first engaging gear ring 506 is unified. Compared with the first engaging gear ring 506 being 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, and the deviation of the first engaging gear ring 506 relative to the first engaging sleeve 510 is smaller. Furthermore, during the shifting process, the first engaging sleeve 510 can smoothly move to the outside of the first engaging gear ring 506 and cooperate with the engaging teeth of the first engaging gear ring 506, reducing the probability of jamming during the shifting process and improving the smoothness of gear shifting of the transmission.

[0128] In an embodiment of the present invention, as Figure 1As shown, a second engaging tooth 2042 is provided on the inner wall of the first output gear 204. The first engaging gear ring 506 includes a second gear ring body 702, a connecting portion 5064, a first engaging tooth 5066, and a mounting portion 5068; it is connected to one side of the second gear ring body 702 and is embedded in the first output gear 204; the first engaging tooth 5066 is provided on the outer wall of the connecting portion 5064 and meshes with the second engaging tooth 2042; the mounting portion 5068 is connected to the other side of the second gear ring body 702 and is sleeved on the first bearing 504.

[0129] In this embodiment, by providing the connecting portion 5064 and providing the first engaging tooth 5066 on the connecting portion 5064, the first engaging tooth 5066 can mesh with the second engaging tooth 2042 on the inner wall of the first output gear 204, thereby realizing the connection between the second gear ring body 702 and the first output gear 204, and enabling the first output gear 204 and the first engaging gear ring 506 to rotate synchronously.

[0130] By providing the mounting portion 5068, the second gear ring body 702 can be supported on the spline hub 502, thereby realizing the positioning of the first engaging gear ring 506.

[0131] In an embodiment of the present invention, as Figure 1 shown, the housing assembly 1 is for a transmission. The housing assembly 1 includes a first main housing 1022, a second main housing 1024, a secondary housing 104, and a first positioning pin 106. A first positioning hole is provided on the first main housing 1022. One side of the second main housing 1024 is connected to the first main housing 1022. The secondary housing 104 is connected to the other side of the second main housing 1024, and a second positioning hole is provided on the secondary housing 104. One end of the first positioning pin 106 is inserted into the second positioning hole, and the other end passes through the second main housing 1024 and is inserted into the first positioning hole.

[0132] In this embodiment, the first main housing 1022 and the second main housing 1024 are buckled together to enclose the main housing cavity of the transmission, and the secondary housing 104 is buckled on the second main housing 1024 to enclose the secondary housing space.

[0133] The first main case housing 1022 is provided with a first positioning hole, and the auxiliary case 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 passes through the second main case housing 1024 and is inserted into the first positioning hole, so that the auxiliary case housing 104 is positioned with the first main case housing 1022. When the power components in the auxiliary case cavity are positioned with the auxiliary case housing 104, the first positioning pin 106 transfers the positioning reference to the first main case housing 1022, and then is consistent with the positioning reference of the power transmission components in the main case cavity, improving the matching accuracy between the power transmission components in the main case cavity and the auxiliary case cavity, and further improving the positioning accuracy of the gearbox.

[0134] Moreover, the auxiliary case housing 104 is directly positioned with the first main case housing 1022. Compared with the situation where the auxiliary case housing 104 is directly positioned with the first main case housing 1022, and then the second main case housing 1024 is positioned with the first main case housing 1022, the transfer of the positioning reference is reduced, and thus the influence of the error between each positioning reference on the positioning accuracy is reduced, further improving the positioning accuracy between the auxiliary case housing 104 and the first main case housing 1022, making the positional relationship between the power transmission components in the main case cavity and the auxiliary case cavity more accurate, and improving the smoothness of power transmission and the power transmission efficiency of the gearbox.

[0135] In an embodiment of the present invention, as Figure 1 shown, the first main case housing 1022 is provided with a third positioning hole; one side of the second main case housing 1024 is provided with a fourth positioning hole; the housing 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.

[0136] In this embodiment, both ends of the second positioning pin 108 are respectively inserted into the third positioning hole and the fourth positioning hole to realize the positioning between the first main case housing 1022 and the second main case housing 1024, thereby improving the matching accuracy between the power transmission components in the main case cavity, and further improving the smoothness of power transmission and the power transmission efficiency of the gearbox.

[0137] In an embodiment of the present invention, as Figure 1 shown, the second main case housing 1024 is provided with a fifth positioning hole, and the fifth positioning hole penetrates from one side of the second main case housing 1024 to the other side, and the first positioning pin 106 is inserted into the fifth positioning hole.

[0138] In this embodiment, when the first positioning pin 106 passes through the second main case housing 1024, it cooperates with the fifth positioning hole, so that the first positioning pin 106 realizes the positioning between the second main case housing 1024 and the first main case housing 1022, and between the auxiliary case housing 104 and the first main case housing 1022 at the same time. While improving the positioning accuracy of the lifting shell assembly 1, the positioning structure of the shell assembly 1 is simplified.

[0139] In an embodiment of the present invention, the transmission further includes a shell assembly 1, and an intermediate shaft assembly 4, a main case output shaft assembly 2, and an input shaft assembly 3 are arranged in the shell assembly 1.

[0140] In an embodiment of the present invention, as Figure 1 and Figure 7 shown, the counting gear ring 7 is used for the transmission. The counting gear ring 7 includes a second gear ring body 702 and a first bent portion 704. The first bent portion 704 is connected to the second gear ring body 702, and a plurality of notches 706 are arranged on the first bent portion 704. The plurality of notches 706 are arranged at intervals along the first bent portion 704.

[0141] In this embodiment, since a plurality of spaced notches 706 are arranged on the first bent portion 704, mileage teeth are formed between adjacent notches 706. The sensor can detect the counting gear ring 7 by detecting the mileage teeth, and then detect the mileage of the vehicle.

[0142] Since the detection of the mileage can be realized by arranging a plurality of spaced notches 706 on the first bent portion 704, the counting gear ring 7 can be processed by stamping and bending processes, thereby simplifying the processing process of the counting gear ring 7 and reducing the processing cost of the counting gear ring 7.

[0143] In an embodiment of the present invention, as Figure 8 and Figure 9 shown, the second gear ring body 702 is annular, and the counting gear ring 7 further includes a second bent portion 708. The second bent portion 708 is connected to the inner ring edge of the second gear ring body 702.

[0144] In this embodiment, the second bent portion 708 is arranged on the inner ring of the second gear ring body 702. When the counting gear ring 7 is sleeved on the output shaft of the transmission, the second bent portion 708 increases the contact area between the counting gear ring 7 and the output shaft, so that the counting gear ring 7 rotates synchronously with the output shaft, and the rotational consistency between the counting gear ring 7 and the output shaft is improved.

[0145] And because the counting gear ring 7 rotates synchronously with the output shaft, the detection of the vehicle mileage is made more accurate.

[0146] In an embodiment of the present invention, as Figure 8 and Figure 9As shown, the first bent portion 704 is connected to the outer edge of the second gear ring body 702.

[0147] In this embodiment, the first bent portion 704 is connected to the outer edge of the second gear ring body 702, so that the first bent portion 704 can be formed by a bending process, thereby simplifying the processing technology of the counting gear ring 7 and reducing the processing cost of the counting gear ring 7.

[0148] In an embodiment of the present invention, as Figure 8 and Figure 9 shown, the second gear ring body 702, the first bent portion 704 and the second bent portion 708 are of an integral structure.

[0149] In this embodiment, since the second gear ring body 702, the first bent portion 704 and the second bent portion 708 are of an integral structure, the counting gear ring 7 can be a sheet metal part and can be processed by a bending process.

[0150] When processing the counting gear ring 7, first punch a notch 706 in the completed sheet metal part after blanking, and then perform bending to obtain the counting gear ring 7. And this process is convenient for realizing automation, thereby enabling the counting gear ring 7 provided by the present invention to have higher processing efficiency.

[0151] In the description of the present invention, the term "a plurality" means two or more, unless otherwise clearly defined. The terms "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; the terms "connection", "installation", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0152] In the description of the present invention, the description of the terms "an embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic expressions of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0153] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A transmission, characterized in that, Comprising: A housing assembly, the housing assembly includes a main housing and a secondary housing, and the secondary housing is fastened to the main housing; A main housing output shaft assembly, the main housing output shaft assembly includes a main housing output shaft, and one end of the main housing output shaft is disposed within the main housing; A planetary gear assembly, the planetary gear assembly is disposed within the secondary housing, and one end of the planetary gear assembly is connected to the other end of the main housing output shaft; A secondary housing output shaft, the secondary housing output shaft is connected to the other end of the planetary gear assembly; A second synchronizer, the second synchronizer is disposed between the planetary gear assembly and the main housing; The external dimension of the second synchronizer is smaller than the external dimension of the planetary gear assembly; An input shaft assembly, the input shaft assembly includes an input shaft and a constantly meshing input gear, and the constantly meshing input gear is sleeved on the input shaft; An intermediate shaft assembly, the intermediate shaft assembly includes an intermediate shaft, a constantly meshing transmission gear and a first transmission gear, the constantly meshing transmission gear is sleeved on the intermediate shaft and meshes with the constantly meshing input gear, and the first transmission gear is sleeved on the intermediate shaft; The main housing output shaft assembly further includes a first output gear, the first output gear is sleeved on the main housing output shaft and meshes with the first transmission gear; The helix direction of the constantly meshing input gear is opposite to the helix direction of the first transmission gear, and the helix direction of the constantly meshing input gear is opposite to the helix direction of the first output gear; A counting gear ring, the counting gear ring includes a second gear ring body and a first bent portion, the first bent portion is connected to the second gear ring body, and a plurality of notches are provided on the first bent portion, and the plurality of notches are spaced along the first bent portion; One end of the main housing output shaft is provided with a mounting groove, the gearbox further includes a first plain bearing, the first plain bearing is disposed within the mounting groove, one end of the input shaft is inserted into the mounting groove, and the end of the input shaft is connected to the first plain bearing; The main housing output shaft assembly further includes an elastic sleeve and a reverse gear output gear, the elastic sleeve is sleeved on the main housing output shaft, and the reverse gear output gear is sleeved on the elastic sleeve; The elastic sleeve includes a rubber sleeve and a metal skeleton, the rubber sleeve is sleeved on the main housing output shaft, and the metal skeleton is sleeved on the outside of the rubber sleeve; The housing assembly includes a first main housing, a second main housing, the secondary housing and a first positioning pin; The first main housing is provided with a first positioning hole; One side of the second main housing is connected to the first main housing, the secondary housing is connected to the other side of the second main housing, and the secondary housing is provided with a second positioning hole; One end of the first positioning pin is inserted into the second positioning hole, and the other end passes through the second main housing and is inserted into the first positioning hole; The transmission further includes a pump assembly and a second filter component. The pump assembly is disposed on the housing assembly. The pump assembly includes an oil pump and a first filter component. The first filter component is disposed on the oil pump to filter the engine oil passing through the oil pump. The second filter component is connected to the pump assembly to filter the engine oil passing through the oil pump again; The transmission further includes a magnetic member. The magnetic member is connected to the housing assembly and is located on the side of the first filter component and / or the second filter component.

2. The transmission according to claim 1, characterized in that, The planetary gear assembly includes: An internal gear ring; A sun gear, which is connected to the other end of the main case output shaft; A planet carrier, which is connected to the auxiliary case output shaft; A plurality of planet gears. The plurality of planet gears are disposed on the planet carrier, are circumferentially distributed along the sun gear, and are simultaneously meshed with the internal gear ring and the sun gear.

3. The transmission according to claim 2, characterized in that, The second synchronizer includes: A second engaging sleeve, which is connected to the internal gear ring; A second engaging gear ring, which is connected to the housing assembly and is located on one side of the second engaging sleeve; A third engaging gear ring, which is connected to the planet carrier and is located on the other side of the second engaging sleeve.

4. The transmission according to claim 2, characterized in that, The sun gear is a gear shaft and is connected to the other end of the main case output shaft. The second synchronizer is sleeved outside the gear shaft.

5. The transmission according to claim 2, characterized in that, The sun gear is a gear and is sleeved on the other end of the main case output shaft. The second synchronizer is sleeved outside the main case output shaft.

6. The transmission according to claim 2, characterized in that, A bearing chamber is provided on the main case housing; The transmission further includes a second bearing, and the second bearing is embedded in the bearing chamber; The planet carrier includes a first planet carrier and a second planet carrier. The first planet carrier is located on one side of the plurality of planet gears and is inserted into the inner ring of the second bearing. The second planet carrier is located on the other side of the plurality of planet gears and is connected to the auxiliary case output shaft.

7. The transmission according to claim 6, characterized in that, The second synchronizer is sleeved on the first planet carrier.

8. The transmission according to claim 7, characterized in that, It further includes a first synchronizer. The first synchronizer includes: A spline hub, which is sleeved on the main case output shaft; A first bearing, which is sleeved on the spline hub; A first engaging gear ring, which is sleeved on the first bearing and is connected to the first output gear; A first synchronizing ring, which is disposed on the side of the first engaging gear ring; A first engaging sleeve, which is disposed outside the spline hub and can slide relative to the first synchronizing ring and the first engaging gear ring.

9. The transmission according to claim 8, characterized in that, Second engaging teeth are provided on the inner wall of the first output gear. The first engaging gear ring includes: A first gear ring body; A connecting portion, which is connected to one side of the first gear ring body and is embedded in the first output gear; First engaging teeth, which are provided on the outer wall of the connecting portion and are meshed with the second engaging teeth; A mounting portion, which is connected to the other side of the first gear ring body and is sleeved on the first bearing.

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