Commercial vehicle transmission

Abstract

The utility model relates to the technical field of automobile transmission manufacturing, in particular to a commercial vehicle transmission which comprises a first shaft assembly, a second shaft assembly, an intermediate shaft assembly and a planet carrier welding assembly. The first shaft assembly and the second shaft assembly are coaxially arranged; power transmission is achieved between the intermediate shaft assembly and the first shaft assembly and between the intermediate shaft assembly and the second shaft assembly through meshing of gears. The planet carrier welding assembly and the first shaft assembly achieve power output through meshing between gears. Gears, meshed with the first shaft assembly and the second shaft assembly, of the intermediate shaft assembly are both of herringbone tooth structures; a gear, meshed with the first shaft assembly, of the planet carrier welding assembly is of a herringbone tooth structure. The power receiving, transmission and output of the engine are realized; the special structure of the herringbone teeth is utilized to overcome the problem of overlarge axial force in bevel gear transmission, the axial structure of the gearbox is protected, and the service life of the gearbox is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile transmission manufacturing, in particular to a commercial vehicle transmission, in particular to a commercial vehicle transmission using herringbone gears. Background Art

[0002] With the rapid development of the automobile industry, the diversification and personalization of car models have become the trend of automobile development. The design of the transmission is an important part of automobile design. The transmission is used to change the torque and speed transmitted from the automobile engine to the drive wheels. The purpose is to enable the car to obtain different traction and driving speed under various driving conditions, and at the same time make the engine work within the most favorable working range.

[0003] The commercial vehicle transmission is a vital component in commercial vehicles. It is responsible for changing the vehicle's running speed and traction to adapt to different driving conditions. It includes a clutch housing, a transmission housing, a first shaft assembly, a second shaft assembly, an intermediate shaft assembly, a transmission housing, a rear cover assembly, an output flange, an oil cooling system, a control system, and peripheral accessories. Among them, the first shaft assembly is usually connected to the clutch to receive power from the engine. The second shaft assembly is connected to the first shaft assembly and the intermediate shaft assembly through gears to transmit power to the vehicle's transmission system. The intermediate shaft assembly is located between the first shaft assembly and the second shaft assembly, and different gear combinations are used to achieve different transmission ratios. The gears of the above-mentioned structural assembly mostly use spur gears for meshing and power transmission. There is no axial force in the transmission process of spur gears. Since the overlap is less than that of helical gears, the spur gear transmission is unstable and noisy.

[0004] The Chinese utility model patent with the announcement number CN200985988Y, which was partially invalidated, discloses a helical gear dual intermediate shaft automobile transmission for the auxiliary box, which makes the auxiliary box main shaft reduction gear and the auxiliary box transmission gear helical, thereby improving the gear meshing overlap, making the gear transmission more stable, with stronger bearing capacity, small vibration, low noise, etc. However, there is axial force on the helical gear, and when the helix angle is large, the axial structure may be damaged, thereby reducing the service life of the gear. Utility Model Content

[0005] Aiming at the problems in the prior art of poor axial structural stability and short gear service life due to axial force of helical gears, the utility model provides a commercial vehicle transmission.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a commercial vehicle transmission, comprising a first shaft assembly, a second shaft assembly, an intermediate shaft assembly and a planet carrier welding assembly;

[0008] The first shaft assembly and the second shaft assembly are coaxially arranged; the intermediate shaft assembly, the first shaft assembly and the second shaft assembly can achieve power transmission through the meshing between gears; the planet carrier welding assembly and the first shaft assembly can achieve power output through the meshing between gears;

[0009] The gears meshing between the intermediate shaft assembly and the first shaft assembly and the second shaft assembly are all of herringbone gear structure;

[0010] The gear meshing between the planet carrier welding assembly and a shaft assembly is a herringbone gear structure.

[0011] Furthermore, the one-shaft assembly includes a shaft, on which a deep groove ball bearing, a differential gear and a synchronizer are sequentially arranged.

[0012] Furthermore, the deep groove ball bearing of the first shaft is axially positioned by an elastic retaining ring, and a needle bearing is installed between the first shaft differential gear and the first shaft.

[0013] Furthermore, the two-shaft assembly includes two shafts coaxially arranged with the one shaft, and the two shafts are sequentially provided with a stop ring, a shaft gear, a first sleeve of the second shaft, a second gear gear of the second shaft, a first gear gear of the second shaft, a second sleeve of the second shaft, a reverse gear of the second shaft, a deep groove ball bearing of the second shaft and an oil collecting sleeve; and a herringbone gear sun gear is machined at the end of the two shafts.

[0014] Furthermore, the first shaft and the second shaft are connected via a cylindrical roller bearing without an outer ring.

[0015] Furthermore, needle bearings are respectively installed between the second shaft and the first shaft gear, the second shaft second gear gear, the second shaft first gear gear and the second shaft reverse gear gear.

[0016] Further, the intermediate shaft assembly includes an intermediate shaft, on which are arranged in sequence an intermediate shaft first deep groove ball bearing, an intermediate shaft differential gear, an intermediate shaft transmission gear, an intermediate shaft second gear gear, an intermediate shaft first gear gear, an intermediate shaft reverse gear and an intermediate shaft second deep groove ball bearing; the intermediate shaft reverse gear is meshed with a reverse intermediate gear; the intermediate shaft differential gear is meshed with the first shaft differential gear, the intermediate shaft transmission gear is meshed with the first shaft gear, the intermediate shaft second gear gear is meshed with the second shaft second gear gear, and the intermediate shaft first gear gear is meshed with the second shaft first gear gear.

[0017] Furthermore, the intermediate shaft is respectively interference-fitted with the intermediate shaft differential gear, the intermediate shaft transmission gear and the intermediate shaft second gear gear, and the intermediate shaft first gear gear and the intermediate shaft reverse gear gear are both integrally arranged with the intermediate shaft.

[0018] Furthermore, the planetary carrier welding assembly includes an output shaft, on which a left planetary carrier is arranged, on which a planetary shaft is arranged, on which a planetary gear is arranged, and adjacent planetary gears are meshed with each other; one of the planetary gears is meshed with a herringbone sun gear.

[0019] Furthermore, the first shaft differential gear, the first shaft gear, the second shaft second gear gear, the second shaft first gear gear, the intermediate shaft differential gear, the intermediate shaft transmission gear, the intermediate shaft second gear gear and the intermediate shaft first gear gear are all herringbone gear structures; the reverse gear intermediate gear, the intermediate shaft reverse gear gear and the second shaft reverse gear gear are all involute spur gear structures.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model discloses a commercial vehicle transmission, which realizes the power reception of the engine through the arrangement of a shaft assembly, realizes the power transmission through the coaxial arrangement of the shaft assembly and the second shaft assembly and the meshing of the intermediate shaft assembly with the gears of the shaft assembly and the second shaft assembly; finally, realizes the power output through the meshing of the gears of the planetary carrier welding assembly and the shaft assembly; the gears meshing the intermediate shaft assembly with the shaft assembly and the second shaft assembly are made into a herringbone gear structure, the gears meshing the planetary carrier welding assembly with the shaft assembly are made into a herringbone gear structure, and the opposite axial forces generated on both sides of the single helical gear structure with a larger helical angle of the herringbone gear are offset by each other, so as to overcome the problem of excessive axial force in the helical gear transmission, protect the axial structure of the gearbox, and improve the service life of the gearbox. In addition, herringbone gears can provide a higher degree of overlap, resulting in better meshing performance and smooth transmission of the gearbox. And because the meshing process of herringbone gears is a transitional process, the force on the tooth surface first changes from small to large, and then from large to small, so that the herringbone gears have a high load-bearing capacity, which improves the stability and service life of the gear operation, further reduces the noise in the transmission system operation, and improves the driving experience.

[0022] The arrangement of the one shaft of the one shaft assembly, the one shaft deep groove ball bearing, the one shaft differential gear and the synchronizer realizes the smooth reception and transmission of power.

[0023] The deep groove ball bearing of the first shaft is axially positioned by an elastic retaining ring, with high positioning accuracy and simple assembly; a needle bearing is installed between the first shaft differential gear and the first shaft, with a more compact structure and high load bearing capacity.

[0024] Rapid and effective power transmission is achieved through the second shaft of the two-shaft assembly and the retaining ring, first shaft gear, second shaft first sleeve, second shaft second gear gear, second shaft first gear gear, second shaft second sleeve, second shaft reverse gear, second shaft deep groove ball bearing, oil collecting sleeve and end herringbone sun gear arranged in sequence on the second shaft.

[0025] The first shaft and the second shaft are connected by a cylindrical roller bearing without an outer ring, and needle bearings are respectively installed between the second shaft and the first shaft gear, the second shaft second gear gear, the second shaft first gear gear and the second shaft reverse gear, so as to further improve the compactness and load bearing capacity of the structure.

[0026] Through the intermediate shaft of the intermediate shaft assembly and the intermediate shaft first deep groove bearing, intermediate shaft differential gear, intermediate shaft transmission gear, intermediate shaft second gear gear, intermediate shaft first gear gear, intermediate shaft reverse gear and intermediate shaft second deep groove ball bearing arranged in sequence on the intermediate shaft, and through the meshing between the gears, effective power transmission is achieved while improving the stability and compactness of the entire transmission structure.

[0027] The intermediate shaft is respectively interference-fitted with the intermediate shaft differential gear, the intermediate shaft transmission gear and the intermediate shaft second gear gear, and the intermediate shaft first gear gear and the intermediate shaft reverse gear gear are both integrally arranged with the intermediate shaft, which is easy to process and has a stronger load-bearing capacity.

[0028] Power output is achieved through the arrangement of the output shaft of the planet carrier welding assembly, the left planet carrier and the planet shaft, the meshing of the planetary gears on the planet shaft and the meshing of the planetary gears with the herringbone sun gear.

[0029] The first shaft differential gear, the first shaft gear, the second shaft second gear gear, the second shaft first gear gear, the intermediate shaft differential gear, the intermediate shaft transmission gear, the intermediate shaft second gear gear and the intermediate shaft first gear gear are of a herringbone gear structure; the reverse gear intermediate gear, the intermediate shaft reverse gear gear and the second shaft reverse gear gear all adopt an involute spur gear structure. While the herringbone gear structure is adopted to ensure the axial structural stability of the gearbox, since the frequency and time of reverse gear use are relatively low, the reverse gear intermediate gear, the intermediate shaft reverse gear gear and the second shaft reverse gear all adopt an involute spur gear structure to save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a schematic diagram of a commercial vehicle transmission.

[0031] Figure 2 This is a structural diagram of an axle assembly of the utility model.

[0032] Figure 3 It is a schematic diagram of the two-axis assembly of the utility model.

[0033] Figure 4 It is a schematic diagram of the intermediate shaft assembly of the utility model.

[0034] Figure 5 It is a schematic diagram of the reverse gear intermediate gear of the utility model.

[0035] Figure 6 This is a schematic diagram of the planet carrier welding assembly of the utility model.

[0036] Figure 7 It is a schematic diagram of the welding structure of the planetary gear inner ring of the utility model.

[0037] Among them, 1-first shaft, 2-elastic retaining ring, 3-first shaft deep groove ball bearing, 4-first shaft differential gear, 5-synchronizer, 6-cylindrical roller bearing without outer ring, 7-stop ring, 8-first shaft gear, 9-second shaft first sleeve, 10-second shaft second gear gear, 11-second shaft first gear gear, 12-second shaft second sleeve, 13-second shaft reverse gear, 14-second shaft deep groove ball bearing, 15-oil collecting sleeve, 16-second shaft, 17-intermediate shaft, 18-intermediate shaft first deep groove bearing, 19-intermediate shaft differential gear, 20-intermediate shaft transmission gear, 21-intermediate shaft second gear gear, 22-intermediate shaft first gear gear, 23-intermediate shaft reverse gear, 24-intermediate shaft second deep groove ball bearing, 25-reverse gear intermediate gear, 26-left planetary carrier, 27-planetary shaft, 28-planetary gear, 29-output shaft, 30-left helical gear ring, 31-right helical gear ring. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] The present invention will be further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0045] The utility model discloses a commercial vehicle transmission, referring to Figure 1 , including a first shaft assembly, a second shaft assembly, an intermediate shaft assembly and a planetary carrier welding assembly; the first shaft assembly and the second shaft assembly are coaxially arranged; the intermediate shaft assembly, the first shaft assembly and the second shaft assembly are meshed with gears to achieve power transmission; the planetary carrier welding assembly and the first shaft assembly are meshed with gears to achieve power output; the gears meshed with the intermediate shaft assembly, the first shaft assembly and the second shaft assembly are herringbone gear structures; the gears meshed with the planetary carrier welding assembly and the first shaft assembly are herringbone gear structures.

[0046] See also Figure 2 The one-shaft assembly includes a shaft 1, on which a deep groove ball bearing 3, a shaft differential gear 4 and a synchronizer 5 are sequentially arranged; the deep groove ball bearing 3 is axially positioned by an elastic retaining ring 2.

[0047] See also Figure 3The two-shaft assembly includes a second shaft 16 coaxially arranged with the first shaft 1, and the second shaft 16 is sequentially provided with a stop ring 7, a first shaft gear 8, a second shaft first sleeve 9, a second shaft second gear gear 10, a second shaft first gear gear 11, a second shaft second sleeve 12, a second shaft reverse gear 13, a second shaft deep groove ball bearing 14 and an oil collecting sleeve 15; the end of the second shaft 16 is processed with a herringbone gear sun gear. The synchronizer 5 has internal splines, and the first shaft 1 is provided with external splines, which are connected with the external splines of the first shaft 1 through the internal splines of the synchronizer 5; the sliding sleeve of the synchronizer 5 can be shifted to the left to connect with the splines of the first shaft differential gear 4 to form a whole; the first sleeve 9 of the second shaft and the second sleeve 12 of the second shaft are processed with internal splines. When the first sleeve 9 of the second shaft or the second sleeve 12 of the second shaft is shifted to the left or right by the shift fork, its internal splines are connected with the external splines on the second shaft 16 and the external splines of the gears on the second shaft, so as to achieve gear engagement, and power is output from the second shaft 16. When the sliding sleeve of the synchronizer 5 is shifted to the right, it forms a whole with the first shaft gear 8 to transmit power. If the first sleeve 9 of the second shaft is shifted to the left, the power does not need to pass through the intermediate shaft 17, and is directly output from the second shaft 16. If the first sleeve 9 of the second shaft is turned to the right, or the second sleeve 12 of the second shaft is turned, the gear 8 of the first shaft is transmitted to the intermediate shaft transmission gear 20, and the power is transmitted from the first shaft 1 to the intermediate shaft 17. Due to the different positions of the two sleeves, the gear on the intermediate shaft 17 meshes with the gear on the second shaft 16, and the power is transmitted from the intermediate shaft 17 back to the second shaft 16 for output.

[0048] Preferably, the first shaft 1 and the second shaft 16 are connected via a cylindrical roller bearing 6 without an outer ring.

[0049] Needle bearings are installed between the first shaft differential gear 4 and the first shaft 1; needle bearings are installed respectively between the second shaft 16 and the first shaft gear 8, the second shaft second gear gear 10, the second shaft first gear gear 11 and the second shaft reverse gear 13.

[0050] See also Figure 4 and Figure 5 The intermediate shaft assembly includes an intermediate shaft 17, on which the intermediate shaft 17 is sequentially provided with an intermediate shaft first deep groove bearing 18, an intermediate shaft differential gear 19, an intermediate shaft transmission gear 20, an intermediate shaft second gear gear 21, an intermediate shaft first gear gear 22, an intermediate shaft reverse gear 23 and an intermediate shaft second deep groove ball bearing 24; the intermediate shaft reverse gear 23 is meshed with a reverse intermediate gear 25; the intermediate shaft differential gear 19 is meshed with the first shaft differential gear 4, the intermediate shaft transmission gear 20 is meshed with the first shaft gear 8, the intermediate shaft second gear gear 21 is meshed with the second shaft second gear gear 10, and the intermediate shaft first gear gear 22 is meshed with the second shaft first gear gear 11. The intermediate shaft 17 is respectively interference-fitted with the intermediate shaft differential gear 19, the intermediate shaft transmission gear 20 and the intermediate shaft second gear gear 21, and the intermediate shaft first gear gear 22 and the intermediate shaft reverse gear 23 are both integrally provided with the intermediate shaft 17.

[0051] See also Figure 6 and Figure 7 The planet carrier welding assembly includes an output shaft 29, on which a left planet carrier 26 is arranged, on which a planet shaft 27 is arranged, on which a planet gear 28 is arranged, and on which adjacent planet gears 28 are meshed with each other; the planet gears 28 are meshed with the herringbone sun gear; the planet gears 28 are meshed with a herringbone inner gear ring structure, driving the planet carrier welding assembly to rotate for output; the herringbone inner gear ring structure is a left helical gear ring 30 and a right helical gear ring 31 welded together to form a herringbone gear ring structure. Preferably, the left planet carrier 26 is welded with the output shaft 29, and the planet gears 28 are arranged in five numbers, the herringbone sun gear is used as the input of the auxiliary box planetary gear, and the planet gears 28 are installed on the planet shaft 27 through a needle bearing; the meshing between the planet gears 28 drives the planet carrier welding assembly to rotate for output.

[0052] The first shaft differential gear 4, the first shaft gear 8, the second shaft second gear gear 10, the second shaft first gear gear 11, the intermediate shaft differential gear 19, the intermediate shaft transmission gear 20, the intermediate shaft second gear gear 21 and the intermediate shaft first gear gear 22 are herringbone gear structures; the reverse gear intermediate gear 25, the intermediate shaft reverse gear 23 and the second shaft reverse gear 13 all adopt an involute spur gear structure.

[0053] Preferably, except for the reverse gear, the other gears adopt a herringbone gear structure, and the rotation direction of the herringbone gears on the first shaft 1 is consistent, which is left-handed and right-handed from left to right. The rotation direction of the herringbone gears on the intermediate shaft 17 is consistent, which is left-handed and right-handed from left to right.

[0054] In summary, the utility model provides a commercial vehicle transmission using herringbone gears, wherein the gears meshing the intermediate shaft assembly with the first shaft assembly and the second shaft assembly are made into a herringbone gear structure, and the gears meshing the planetary carrier welding assembly with the first shaft assembly are made into a herringbone gear structure, and two opposite single helical gear structures with larger helical angles of the herringbone gears are used to overcome the problem of excessive axial force in the helical gear transmission, thereby protecting the axial structure of the gearbox and increasing the service life of the transmission.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to impose any limitation on the technical solution of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can also be subjected to several simple modifications and replacements, and these modifications and replacements are also within the scope of protection covered by the claims.

Claims

1. A commercial vehicle transmission, characterized in that: It includes a first shaft assembly, a second shaft assembly, an intermediate shaft assembly and a planet carrier welding assembly; The first shaft assembly and the second shaft assembly are coaxially arranged; the intermediate shaft assembly, the first shaft assembly and the second shaft assembly can achieve power transmission through the meshing between gears; the planet carrier welding assembly and the first shaft assembly can achieve power output through the meshing between gears; The gears meshing between the intermediate shaft assembly and the first shaft assembly and the second shaft assembly are all of herringbone gear structure; The gear meshing between the planet carrier welding assembly and a shaft assembly is a herringbone gear structure.

2. The commercial vehicle transmission according to claim 1, characterized in that: The one-shaft assembly comprises a shaft (1), on which a deep groove ball bearing (3), a speed differential gear (4) and a synchronizer (5) are arranged in sequence.

3. The commercial vehicle transmission according to claim 2, characterized in that: The one-shaft deep groove ball bearing (3) is axially positioned by means of an elastic retaining ring (2), and a needle bearing is installed between the one-shaft speed differential gear (4) and the one-shaft (1).

4. The commercial vehicle transmission according to claim 2, characterized in that: The two-shaft assembly comprises a second shaft (16) coaxially arranged with the first shaft (1), and the second shaft (16) is provided with a stop ring (7), a first shaft gear (8), a first shaft sleeve (9), a second shaft second gear gear (10), a second shaft first gear gear (11), a second shaft second sleeve (12), a second shaft reverse gear (13), a second shaft deep groove ball bearing (14) and an oil collecting sleeve (15) in sequence; and a herringbone gear sun gear is machined at the end of the second shaft (16).

5. The commercial vehicle transmission according to claim 4, characterized in that: The first shaft (1) and the second shaft (16) are connected via a cylindrical roller bearing (6) without an outer ring.

6. The commercial vehicle transmission according to claim 4, characterized in that: Needle bearings are respectively installed between the second shaft (16) and the first shaft gear (8), the second shaft second gear gear (10), the second shaft first gear gear (11) and the second shaft reverse gear gear (13).

7. The commercial vehicle transmission according to claim 4, characterized in that: The intermediate shaft assembly comprises an intermediate shaft (17), on which a first intermediate shaft deep groove bearing (18), an intermediate shaft differential gear (19), an intermediate shaft transmission gear (20), an intermediate shaft second gear gear (21), an intermediate shaft first gear gear (22), an intermediate shaft reverse gear gear (23) and an intermediate shaft second deep groove ball bearing (24) are arranged in sequence; the intermediate shaft reverse gear gear (23) is meshed with a reverse intermediate gear (25); the intermediate shaft differential gear (19) is meshed with a first shaft differential gear (4), the intermediate shaft transmission gear (20) is meshed with a first shaft gear (8), the intermediate shaft second gear gear (21) is meshed with a second shaft second gear gear (10), and the intermediate shaft first gear gear (22) is meshed with a second shaft first gear gear (11).

8. The commercial vehicle transmission according to claim 7, characterized in that: The intermediate shaft (17) is respectively interference-fitted with the intermediate shaft differential gear (19), the intermediate shaft transmission gear (20) and the intermediate shaft second gear gear (21), and the intermediate shaft first gear gear (22) and the intermediate shaft reverse gear gear (23) are both integrally arranged with the intermediate shaft (17).

9. The commercial vehicle transmission according to claim 7, characterized in that: The planet carrier welding assembly comprises an output shaft (29), a left planet carrier (26) is arranged on the output shaft (29), a planet shaft (27) is arranged on the left planet carrier (26), a planet gear (28) is arranged on the planet shaft (27), and adjacent planet gears (28) are meshed with each other; one of the planet gears (28) is meshed with a herringbone gear sun gear.

10. The commercial vehicle transmission according to any one of claims 7 to 9, characterized in that: The first shaft differential gear (4), the first shaft gear (8), the second shaft second gear gear (10), the second shaft first gear gear (11), the intermediate shaft differential gear (19), the intermediate shaft transmission gear (20), the intermediate shaft second gear gear (21) and the intermediate shaft first gear gear (22) are all herringbone gear structures; the reverse gear intermediate gear (25), the intermediate shaft reverse gear gear (23) and the second shaft reverse gear gear (13) are all involute spur gear structures.

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