Bevel gearbox for steering transmission system

Abstract

This invention relates to a bevel gearbox for use as part of a steering mechanism in a commercial vehicle. The invention is adaptable for use when the controlled axle of the vehicle is located below the passenger compartment. The bevel gearbox may include a housing (1) that further houses two separate bevel gear cylindrical assemblies (18). Each of the example bevel gear cylindrical assemblies (18) includes a bevel gear (3), which further includes a gear head (5) with teeth (7) and a gear shaft (4). A shaft housing (2) surrounds the circumference of the gear shaft (4). To enable rotation of the bevel gear (3) within the shaft housing (2), bearings (13, 16) may be disposed between the surface of the bevel gear (3) and the surface of the shaft housing (2). The end face of the gear head (5) may include a gear head recess (6) for positioning a central tenon (8) within the gear head recess (6).

Description

Technical Field

[0001] The present invention generally relates to a bevel gearbox for a steering drivetrain assembly. Background Technology

[0002] Bevel gearboxes are a common component of the steering mechanisms of commercial vehicles, particularly in cases such as many trucks, vans, and buses, where the vehicle's controlled axle is located below the passenger compartment.

[0003] In such vehicles, steering input from the steering wheel is transmitted to the steering mechanism (such as steering gears) via steering shafts. The steering shafts are configured to rotate with the steering wheel in order to transmit the steering input. Due to the configuration of a given vehicle, the steering shafts can be oriented along different axes to alter the operating angle from the steering column. For example, a first steering shaft can be oriented substantially vertically to receive rotational input from the steering wheel, while a second steering shaft can be oriented substantially horizontally to transmit the rotational input to the steering gears. To enable the alteration of the operating angle, a bevel gearbox can be positioned between the steering shafts to transfer rotational input from one steering shaft to the other.

[0004] Figure 1 The above general description illustrates the steering mechanism 100. The steering mechanism 100 typically includes a steering wheel 102, a first steering shaft 104 oriented substantially vertically, a bevel gearbox 106, a second steering shaft 108 oriented substantially horizontally, and a steering gear 110. The bevel gearbox 106 transmits rotational input from the first steering shaft 104 to the second steering shaft 108 for reception by the steering gear 110.

[0005] Figure 2This describes a bevel gearbox 200 of a generally common configuration as disclosed in U.S. Patent 9,555,825B2 (the entire disclosure of which is incorporated herein by reference). The bevel gearbox 200 includes a housing 201 that houses a first bevel gear 202A and a second bevel gear 202B. The first bevel gear 202A includes teeth 203A that mesh with teeth 203B of the second bevel gear 202B. Each bevel gear 202A, 202B has the same number of teeth, thus providing a 1:1 gear ratio. The first bevel gear 202A and the second bevel gear 202B each include short shafts 204A, 204B, which terminate with splined sections 205A, 205B, allowing the short shafts 204A, 204B to be connected to an additional steering shaft via, for example, a sleeve 206. The bearings, not shown, are located in housing 201 and enable each bevel gear 202A, 202B to rotate relative to housing 201. Typically, aligning the two gears 202A and 202B during the assembly of the bevel gearbox 200 can require considerable work and experience. For example, optimal positioning may require significant manual manipulation, thus slowing down the manufacture, repair, and restoration of the bevel gearbox 200. Additionally, suboptimal bearing positioning and limitations on the locations where bearings can be placed will further affect the smooth operation of the bevel gearbox 200 (e.g., increased friction with housing 200 or wear on gear teeth 203A, 303B). Given the difficulty in ensuring proper positioning and alignment, bevel gearboxes used in steering transmissions typically include gears with spur teeth, which allow for relatively easy alignment but are considered to generate noise, vibration, excess drag, efficiency loss, and backlash.

[0006] Preferred embodiments of the present invention attempt to address one or more of these disadvantages and / or at least provide a useful alternative to the public.

[0007] References to any previously disclosed (or derived from) information or any known matter in this specification are not and should not be construed as confirmation or acknowledgment or any form of recommendation of any previously disclosed (or derived from) information or known matter that form part of the general knowledge in the technical field to which this specification pertains. Summary of the Invention

[0008] According to a first aspect of the invention, a bevel gear cylindrical assembly for insertion into a bevel gear box is provided, the cylindrical assembly comprising:

[0009] A bevel gear, comprising a gear head with gear teeth and a gear shaft extending from the gear head;

[0010] A shaft housing surrounding the circumference of the gear shaft such that the gear head extends from the shaft housing; and

[0011] A first radial bearing is located between the gear shaft and the shaft housing.

[0012] In one embodiment, the shaft housing includes a first radial bearing recess for at least partially positioning a first radial bearing within the first radial bearing recess.

[0013] In one embodiment, the first radial bearing includes a roller bearing, and optionally a needle roller bearing.

[0014] In one embodiment, the cylindrical assembly further includes a first axial bearing located between the gear head and the shaft housing.

[0015] In one embodiment, the shaft housing includes a first axial bearing recess for at least partially positioning a first axial bearing within the first axial bearing recess.

[0016] In one embodiment, the first axial bearing includes a roller bearing, and optionally a needle roller bearing.

[0017] In one embodiment, the shaft housing includes a collar protrusion around the circumference of the shaft housing to restrict insertion of the bevel gear cylindrical assembly into the bevel gearbox.

[0018] In one embodiment, the gear head includes a gear head end face surrounded by gear teeth, wherein the gear head end face includes a gear head recess that allows a central tenon to be inserted into the gear head recess.

[0019] In this embodiment, the cylindrical assembly further includes:

[0020] A center tenon, which is located in the recess of the gear head;

[0021] The second radial roller bearing is located between the circumference of the central tenon and the recess.

[0022] In one embodiment, the gear head recess includes a second radial roller bearing recess for at least partially positioning the second radial bearing within the radial roller bearing recess.

[0023] In one embodiment, the second radial bearing includes a roller bearing, and optionally a needle roller bearing.

[0024] In one embodiment, the cylindrical assembly includes a second axial bearing that surrounds the circumference of the central tenon and contacts the end face of the gear head.

[0025] In one embodiment, the gear head recess includes a second axial bearing recess for at least partially positioning a second axial bearing within the second axial bearing recess.

[0026] In one embodiment, the second axial bearing includes a roller bearing, and optionally a needle roller bearing.

[0027] In one embodiment, the cylindrical assembly further includes a seal at the end of the shaft housing opposite to the gear head, the seal being configured to seal between the gear shaft and the shaft housing.

[0028] In one embodiment, the gear head includes angled gear teeth.

[0029] In one embodiment, the gear head includes helical gear teeth.

[0030] In an embodiment, the pitch cone angle of the gear teeth is between 30° and 60°, and optionally, the pitch cone angle of the teeth is 45°.

[0031] In one embodiment, the cylindrical assembly is configured to slide into the bevel gearbox.

[0032] According to a second aspect of the invention, a housing for a bevel gearbox is provided, the housing comprising at least two cylindrical recesses, each cylindrical recess being configured to insert a cylindrical component according to a first aspect of the invention into the cylindrical recess.

[0033] In one embodiment, at least two cylindrical recesses are configured to be at 45° to 135° relative to each other, optionally at 60° to 120° relative to each other, and optionally at 90° relative to each other.

[0034] In one embodiment, the housing also includes a locking device for locking the cylindrical assembly inserted into the cylindrical recess into place.

[0035] In one embodiment, the locking device includes an opening for inserting a locking pin, or optionally a rolling pin, into the opening.

[0036] According to a third aspect of the present invention, a bevel gearbox is provided, comprising:

[0037] According to a second aspect of the invention, the outer casing of the box; and

[0038] Two bevel gear cylindrical assemblies, each according to a first aspect of the invention, wherein each bevel gear cylindrical assembly is inserted into a corresponding cylindrical recess in the housing.

[0039] In one implementation, the bevel gears of each bevel gear cylindrical assembly have a 1:1 gear ratio relative to each other.

[0040] In this implementation, the bevel gearbox is integrated into the vehicle's steering drivetrain.

[0041] In one implementation, the bevel gearbox is integrated into the truck's steering drivetrain.

[0042] According to a fourth aspect of the present invention, a method for manufacturing a bevel gearbox is provided, the method comprising:

[0043] Positioning the outer casing according to the second aspect of the invention; and

[0044] The first bevel gear cylindrical assembly according to the first aspect of the invention is inserted into the first cylindrical recess of the housing assembly; and

[0045] The second bevel gear cylindrical assembly according to the first aspect of the invention is inserted into the second cylindrical recess of the box assembly.

[0046] In an implementation method, the method further includes:

[0047] Lock the first bevel gear cylindrical assembly into the first cylindrical recess; and

[0048] Lock the second gear cylindrical assembly into the second cylindrical recess.

[0049] According to a fifth aspect of the invention, a bevel gearbox is provided for integration into a steering transmission system of a vehicle, the bevel gearbox comprising:

[0050] The first bevel gear and the second bevel gear include helical teeth.

[0051] In this implementation, the bevel gearbox is integrated into the vehicle's steering drivetrain.

[0052] References to the ranges of numbers disclosed herein (e.g., 1 to 10) are intended to also include references to all rational numbers within that range (e.g., 1, 1.1, 2, 3, 3.9, 4, 5, 6, 6.5, 7, 8, 9, and 10) and to any range of rational numbers within that range (e.g., 2 to 8, 1.5 to 5.5, and 3.1 to 4.7), and therefore, all subranges of all ranges explicitly disclosed herein are explicitly disclosed. These are merely examples of specific intent, and all possible combinations of numerical values ​​between the listed minimum and maximum values ​​should be considered as expressly stated in this application in a similar manner.

[0053] For those skilled in the art, numerous structural changes and a wide range of different embodiments and applications of the invention will be implied without departing from the scope of the invention as defined in the appended claims. The disclosure and description herein are purely illustrative and not intended to be limiting in any way. Where specific instances of known equivalents in the field to which this invention pertains are mentioned herein, those known equivalents are considered to be incorporated herein as if separately set forth herein.

[0054] As used herein, the term "(s)" following a noun refers to the plural and / or singular form of that noun. Furthermore, as used herein, the term "and / or" means "and" or "or," or, where the context permits, both "and" and "or." This invention encompasses the foregoing and also contemplates the following structures, which are given as examples only.

[0055] Throughout this specification and the appended claims, unless the context otherwise requires, the word “comprising” and its variations such as “including” or “comprising” shall be understood to implicitly include the whole or the whole or the group of steps stated, but not to exclude any other whole or the whole or the group of steps.

[0056] Furthermore, terms such as “side,” “end,” “top,” and “bottom” are used only to describe elements in relation to each other, but in no way are intended to indicate or imply the necessary or required orientation of the device, or to specify how the invention described herein will be used, installed, displayed, or positioned in use. Attached Figure Description

[0057] Figure 1 A steering mechanism for commercial vehicles, incorporating a bevel gearbox according to the prior art, is shown.

[0058] Figure 2 An exploded view of a bevel gearbox used in a steering mechanism as disclosed in U.S. Patent 9555825B2 is shown.

[0059] Figure 3 A bevel gearbox according to an embodiment of the present invention is shown.

[0060] Figure 4 It shows Figure 3 A sectional view of a bevel gearbox.

[0061] Figure 5 It shows Figure 3 Exploded view of a bevel gearbox.

[0062] Figure 6A bevel gear cylindrical assembly for insertion into a bevel gearbox according to an embodiment of the present invention is shown.

[0063] Figure 7 A shaft housing for a bevel gear cylindrical assembly according to an embodiment of the present invention is shown.

[0064] Figure 8 A bevel gear according to an embodiment of the present invention is shown.

[0065] Figure 9 A bevel gearbox housing according to an embodiment of the present invention is shown.

[0066] Parts list

[0067] 1-Box shell

[0068] 2-shaft housing

[0069] 3-Bevel Gear

[0070] 4-Gear Shaft

[0071] 5-Gear Head

[0072] 6- Gear head recess

[0073] 7-teeth

[0074] 8-Center tenon

[0075] 9- Gap filler gasket

[0076] 10-Rolling pin

[0077] 11-Second Axial Bearing

[0078] 12-Bearing Washer

[0079] 13-First Axial Bearing

[0080] 14-Bearing Washer

[0081] 15-Second radial bearing

[0082] 16-First radial bearing

[0083] 17-Seals

[0084] 18-Bevel gear cylindrical assembly

[0085] 19-Recessed part of shell

[0086] 20-Shaft housing chamfer

[0087] 21-with spline end

[0088] 22-Outer ring protrusion

[0089] 23-First radial bearing recess

[0090] 24-First Axial Bearing Recess

[0091] 25-Second radial bearing recess

[0092] 26-Second Axial Bearing Recess Detailed Implementation

[0093] In a broad sense, the present invention relates to a bevel gear cylindrical assembly for insertion into a bevel gearbox, a method for manufacturing the bevel gear cylindrical assembly, a bevel gearbox, and a method for manufacturing the bevel gearbox and a steering transmission system including the bevel gearbox. Within a broader concept, various embodiments of the bevel gear cylindrical assembly, the bevel gearbox, the steering transmission system, and the method for manufacturing each of the above are described and defined in further detail below. Furthermore, in the description and drawings, reference numerals denote reference to the same features.

[0094] Reference Figures 3 to 5 An embodiment including a bevel gearbox suitable for integration into a steering drivetrain is provided. The bevel gearbox includes a housing 1 that accommodates two separate bevel gear cylindrical assemblies 18. In the illustrated embodiment, the two bevel gear cylindrical assemblies are aligned perpendicularly to each other to transmit rotation at an angle of 90°. Although a 90° angle is illustrated, other angles are explicitly contemplated, including angles in the range of, for example, between 45° and 135° or between 60° and 120°.

[0095] Each of the example bevel gear cylindrical assemblies 18 includes a bevel gear 3, which further includes a gear head 5 with teeth 7 and a gear shaft 4. A shaft housing 2 surrounds the circumference of the gear shaft 4. To enable the bevel gear 3 to rotate within the shaft housing 2, bearings 13 and 16 can be arranged between the surface of the bevel gear 3 and the surface of the shaft housing 2. According to the illustrated embodiment, a first radial bearing 16 is located between the outer periphery of the gear shaft 4 and the shaft housing 2. The first radial bearing 16 positions the gear shaft 4 within the shaft housing 2 and reduces friction between the gear shaft 4 and the shaft housing 2 when the bevel gear 3 rotates within the shaft housing 2. Furthermore, a first axial bearing 13, surrounded by bearing washers 12, is located between the bevel gear head 5 and the shaft housing 2. The first axial bearing 13 positions the gear head 5 against the end of the shaft housing 2 and reduces friction when the gear head 5 rotates against the shaft housing 2. The gap between the shaft housing 2 and the gear shaft 4 can be sealed using a seal, such as seal 17, to prevent dust and other contaminants from entering, for example, the first radial bearing 16. In order to enable the bevel gear cylindrical assembly 18 to be easily gripped by a hand tool, such as a wrench, for insertion or removal, the shaft housing 2 may include a chamfer 20.

[0096] In the illustrated embodiment, the end face of the gear head 5 also includes a gear head recess 6 for positioning the central tenon 8 within the gear head recess 6. The central tenon 8 itself can be positioned within the recess of the housing 1 to facilitate the alignment and support of the bevel gear 3 (and more generally the bevel gear cylindrical assembly 18) within the housing 1. To enable rotation of the gear head 5 relative to the central tenon 8, bearings 11, 15 are positioned between the gear head 5 and the central tenon 8. According to the illustrated embodiment, a second radial bearing 15 is located between the outer periphery of the central tenon 8 and the inner periphery of the gear head recess 6. Furthermore, a second axial bearing 11, surrounded by a bearing washer 12, is located between the end face of the gear head 5 and the housing 1. Figure 5 As most clearly illustrated, another chuck washer 9 is placed between the second axial bearing 11 and the housing.

[0097] In the illustrated embodiment, each of the axial roller bearings 13, 11 and the radial roller bearings 16, 15 is exemplified as a needle roller bearing. However, other bearing configurations including roller bearing configurations can be used according to the invention.

[0098] Reference Figure 6 The bevel gear cylindrical assembly 18 according to an embodiment of the invention is highlighted. The bevel gear cylindrical assembly 18 can be quickly and easily inserted into and removed from the housing 1 as a pre-assembled item. To insert the bevel gear cylindrical assembly 18 into the housing 1, the bevel gear cylindrical assembly 18 can simply slide into a corresponding recess 19 in the housing 1. Once properly positioned, the bevel gear cylindrical assembly 18 can be locked in place by inserting a roller pin 10 or a similar device, such as... Figures 3 to 5 As shown. Since the bevel gear 3 is pre-positioned in the bevel gear cylindrical assembly in conjunction with the bearings 11, 13, 15, and 16, the complex work of aligning the bevel gear 3 inside the housing 1 can be avoided.

[0099] Figure 7 A shaft housing 2 according to an embodiment of the present invention is shown. As shown, the shaft housing 2 has a generally annular shape for fitting around the circumference of the gear shaft 4. To prevent the bevel gear cylindrical assembly from being inserted too deeply into the housing 1, the shaft housing is provided with an outer ring protrusion 22, which is configured to abut against the surface of the shaft housing 2 when the bevel gear cylindrical assembly has been inserted to a sufficient depth.

[0100] To enable proper positioning of the first radial bearing 16 between the shaft housing 2 and the gear shaft 4, the shaft housing 2 may include a first radial bearing recess 23. The first radial bearing recess is accessible from a first side of the shaft housing, allowing the first radial bearing 16 to slide from a first opening in the shaft housing 2 into the first radial bearing recess 23, while preventing the first radial bearing 16 from sliding out of the opposite opening in the shaft housing 2. The first radial bearing recess 23 may be sized to accommodate the entire first radial bearing 16 within it. To enable proper placement and positioning of the first axial bearing 13 between the shaft housing 2 and the gear head 5, the shaft housing 2 may also include a first axial bearing recess 24. The first axial bearing recess 24 is sized and positioned to ensure that the first axial bearing 13 is properly positioned between the shaft housing 2 and the gear head 5 during installation.

[0101] Figure 8 A bevel gear 3, comprising a gear shaft 4 and a gear head 5 according to an embodiment of the present invention, is shown. As shown, the gear head 5 may include a gear head recess 6 in which a central tenon 8 is positioned. To ensure proper placement of a bearing between the central tenon 8 and the gear head recess 6, an additional bearing recess may be provided in the gear head recess 6. Figure 8 As shown, a second axial bearing recess 26 can be provided in the gear head recess 6 to position the second axial bearing 11 between the gear head 5 and the housing 1. Similarly, a second radial bearing recess can be provided in the gear head recess 6 to position the second radial bearing 15 between the gear head 5 and the central tenon 8. (Refer to...) Figure 4 and Figure 6 Example B illustrates the positioning of a bearing within a bearing recess according to an embodiment of the present invention.

[0102] In the illustrated embodiment, the first radial bearing recess 23 and the first axial bearing recess 24 are located in the shaft housing 2. Alternatively, the first radial bearing recess may be located in the gear shaft 4 or in both the shaft housing 2 and the gear shaft 4, while the first axial bearing recess may be located in the gear head 5 or in both the gear head 4 and the shaft housing 2. Similarly, the second radial bearing recess 25 may be located in the central tenon 8 or in both the central tenon 8 and the gear head recess 6, while the second axial bearing recess 26 may be located in the housing 1 or in both the housing 1 and the gear head recess 6.

[0103] According to certain embodiments, the present invention enables the assembly of a bevel gearbox with simple and easy alignment of the bevel gears and their teeth. For example, the bevel gear 3 can be positioned forward or backward within the housing 1 using, for example, bearing washers 12, 14 located in the first axial bearing recess 24 or the second axial bearing recess 26. That is, to further bring the bevel gear 3 into the housing, the bearing washer 14 can be located in the first axial bearing recess 24 (thereby pushing the gear head 5 away from the housing 2). Similarly, to further bring the bevel gear 3 out of the housing 1, the bearing washer 12 can be located in the second axial bearing recess 26 (thereby pushing the gear head 5 away from the surface of the housing 1 opposite to the gear head 5). Such steps can be performed simply and easily without needing to enter the interior of the housing 1.

[0104] The simple and easy alignment of bevel gear 3 further provides opportunities to improve the performance characteristics of bevel gearboxes. In particular, as... Figure 6 As shown, each bevel gear 3 can utilize helical teeth 7 to improve meshing between bevel gears 3 and thereby reduce resistance, noise, and vibration compared to spur teeth, and otherwise improve overall operational smoothness. In the illustrated embodiment, each bevel gear 3 can have the same number of gear teeth 7, thereby providing a 1:1 gear ratio. However, as will be readily apparent to those skilled in the art, bevel gearboxes can provide other gear ratios.

[0105] In some implementations, bevel gearboxes can be integrated into the steering drivetrain of a vehicle (e.g., a commercial vehicle, such as a truck, bus, or van). Typically, as... Figures 3 to 5 As shown, each gear shaft 4 may be provided with a splined end 21 to enable, for example, the use of existing technology Figure 2 The illustrated fitting sleeve 206 is connected within the steering shaft or connected to, as in the prior art Figure 1 The example is a universal joint.

[0106] Those skilled in the art will understand that modifications can be made without departing from the spirit and scope of the invention. Therefore, the embodiments and / or examples described herein are considered illustrative rather than restrictive.

Claims

1. A bevel gear cylindrical assembly for insertion into a bevel gearbox, the cylindrical assembly comprising: A bevel gear, the bevel gear further comprising: A gear head, the gear head including a gear head end face surrounded by gear teeth, the gear head end face further including a gear head recess, and... The gear shaft extending from the gear head; A central tenon, wherein the central tenon is located within the recess of the gear head; A shaft housing surrounding the circumference of the gear shaft; A first radial bearing is located between the gear shaft and the shaft housing; A first axial bearing is located between the gear head and the shaft housing; A second radial bearing is located between the gear head and the central tenon; and A second axial bearing surrounds the circumference of the central tenon and contacts the end face of the gear head.

2. The cylindrical assembly according to claim 1, wherein, The shaft housing includes a first radial bearing recess for at least partially positioning the first radial bearing within the first radial bearing recess.

3. The cylindrical assembly according to claim 1 or 2, wherein, The first radial bearing includes a roller bearing.

4. The cylindrical assembly according to claim 1, wherein, The shaft housing includes a first axial bearing recess for at least partially positioning the first axial bearing within the first axial bearing recess.

5. The cylindrical assembly according to claim 1 or 4, wherein, The first axial bearing includes a roller bearing.

6. The cylindrical assembly according to claim 1, wherein, The shaft housing includes a collar protrusion around the circumference of the shaft housing to restrict the insertion of the bevel gear cylindrical assembly into the bevel gearbox.

7. The cylindrical assembly according to claim 1, wherein, The gear head recess includes a second radial bearing recess for at least partially positioning the second radial bearing within the second radial bearing recess.

8. The cylindrical assembly according to claim 7, wherein, The second radial bearing includes a roller bearing.

9. The cylindrical assembly according to claim 1, wherein, The gear head recess includes a second axial bearing recess for at least partially positioning the second axial bearing within the second axial bearing recess.

10. The cylindrical assembly according to claim 1, wherein, The second axial bearing includes a roller bearing.

11. The cylindrical assembly of claim 1, wherein the cylindrical assembly includes a seal at the end of the shaft housing opposite to the gear head, the seal being configured to seal between the gear shaft and the shaft housing.

12. The cylindrical assembly according to claim 1, wherein, The gear head includes angled gear teeth.

13. The cylindrical assembly according to claim 12, wherein, The gear head includes helical gear teeth.

14. The cylindrical assembly according to claim 13, wherein, The pitch cone angle of the gear teeth is between 30° and 60°.

15. The cylindrical assembly according to claim 1, wherein, The cylindrical assembly is configured to slide into the housing of the bevel gearbox.

16. A housing for a bevel gearbox, the housing comprising at least two cylindrical recesses, each cylindrical recess configured to insert a cylindrical assembly according to any one of claims 1 to 15 into the cylindrical recess.

17. The housing shell according to claim 16, wherein, The at least two cylindrical recesses are set at an angle of 45° to 135° relative to each other.

18. The housing according to claim 17, further comprising a locking device for locking the cylindrical assembly inserted into the cylindrical recess into place.

19. The housing shell according to claim 18, wherein, The locking device includes an opening for inserting a locking pin into the opening.

20. A bevel gearbox, comprising: The outer casing according to any one of claims 16 to 19; as well as Two bevel gear cylindrical assemblies according to any one of claims 1 to 15, wherein each bevel gear cylindrical assembly is inserted into a corresponding cylindrical recess in the housing.

21. The bevel gearbox according to claim 20, wherein, The bevel gears in each bevel gear cylindrical assembly have a 1:1 gear ratio relative to each other.

22. The bevel gearbox according to claim 20 or claim 21, wherein the bevel gearbox is coupled to the steering drivetrain of a vehicle.

23. The bevel gearbox of claim 22, wherein the bevel gearbox is coupled to the steering drivetrain of the truck.

24. A method for producing a bevel gearbox, the method comprising: Position the outer casing according to any one of claims 16 to 19; as well as Insert the first bevel gear cylindrical assembly according to any one of claims 1 to 15 into the first cylindrical recess of the housing; and The second bevel gear cylindrical assembly according to any one of claims 1 to 15 is inserted into the second cylindrical recess of the housing.

25. The method for producing a bevel gearbox according to claim 24, wherein: Inserting the first bevel gear cylindrical assembly into the first cylindrical recess includes sliding the first bevel gear cylindrical assembly into the first cylindrical recess; and Inserting the second bevel gear cylindrical assembly into the second cylindrical recess includes sliding the second bevel gear cylindrical assembly into the second cylindrical recess.

26. The method for producing a bevel gearbox according to claim 24, further comprising: Lock the first bevel gear cylindrical assembly into the first cylindrical recess; as well as The second bevel gear cylindrical assembly is locked into the second cylindrical recess.

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