Rear axle gear box assembly device based on embedded braking system and using method

Abstract

A rear axle gear box assembly device based on an embedded brake system and a using method thereof, the rear axle gear box assembly device comprises a box shell (12) used as a support body, a differential assembly (15) arranged in the box shell (12), a sun gear (16) arranged between the differential assembly (15) and the box shell (12), and a brake assembly arranged between the sun gear (16) and the box shell (12), according to the rear axle gear box assembly device, a sun gear (16) is driven to output rotating torque, a gear located on a half shaft is driven to rotate through the sun gear (16), the rotating speed of the sun gear (16) is braked through a braking assembly, and the differential state of the rear axle gear box assembly device is made to be in the external interference effect; the technical problem of a differential mechanism assembly is solved, and therefore the transmission conveying effect of the rear axle gear box assembly device is improved.

Description

Technical Field

[0001] This invention relates to a rear axle gearbox assembly and its method of use, and more particularly to a rear axle gearbox assembly and its method of use based on an embedded braking system. Background Technology

[0002] The rear axle gearbox assembly serves as the transmission component between the half-shaft and the drive shaft, making it a crucial rear axle component. Currently, most rear axle gearbox assemblies are differential assemblies. However, the gear ratio of the differential assembly limits the transmission efficiency of the rear axle gearbox assembly. This invention, by placing the differential state of the rear axle gearbox assembly under external disturbance, effectively explores and studies the technical problems of differential assemblies at the technical level. The statements herein provide only background information related to this invention and do not necessarily constitute prior art. Based on the technical disclosure provided by the applicant on December 25, 2025, which addresses practical technical problems encountered during the work process, and the existing technical problems, technical features, and technical effects in similar patent documents and background information obtained through retrieval, the technical solution of this invention is proposed. Summary of the Invention

[0003] The subject of this invention is a rear axle gearbox assembly based on an embedded braking system. The subject of this invention is a method of using a rear axle gearbox assembly based on an embedded braking system.

[0004] In order to overcome the above-mentioned technical shortcomings, the purpose of this invention is to provide a rear axle gearbox assembly device and a method of using it based on an embedded braking system, thereby improving the transmission and conveying effect of the rear axle gearbox assembly device.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a rear axle gearbox assembly based on an embedded braking system, comprising a housing for use as a support, a differential assembly disposed in the housing, a sun gear disposed between the differential assembly and the housing, and a braking assembly disposed between the sun gear and the housing.

[0006] By designing a housing, differential assembly, sun gear, and braking components, the housing and differential assembly enable the sun gear to output rotational torque. The sun gear, in turn, drives the gear located on the half-shaft to rotate. The braking components brake the rotational speed of the sun gear, thus keeping the differential state of the rear axle gearbox assembly under external interference. This solves the technical problems of the differential assembly and improves the transmission efficiency of the rear axle gearbox assembly.

[0007] One of the related technical solutions involves interconnecting the gearbox housing, differential assembly, sun gear, and brake assembly in a manner that exposes the differential state of the rear axle gearbox assembly to external disturbances.

[0008] One related technical solution is to connect the sun gear and braking assembly to the housing and differential assembly by means of braking treatment according to the rotational speed.

[0009] One of the related technical solutions is that the braking assembly includes brake pads, a piston cylinder, a straight pin, a spring pin, and a pressure plate. The technical effect of the above four technical solutions is that they enable braking intervention on the output differential state of the rear axle gearbox assembly.

[0010] One of the related technical solutions also includes a first accessory device and the first accessory device is configured as a rear support.

[0011] One of the related technical solutions also includes a second accessory device, and the second accessory device is configured as a front shell.

[0012] One of the related technical solutions also includes a third accessory device, and the third accessory device is configured to include a driven gear and a driving gear.

[0013] One of the related technical solutions also includes a fourth accessory device, and the fourth accessory device is configured as a connecting flange.

[0014] One of the related technical solutions also includes a fifth accessory device, and the fifth accessory device is configured to include a cover and a shield.

[0015] The technical effect of the above five technical solutions is that they enable the integrated installation of other components and expand the technical effect of the present invention.

[0016] One related technical solution includes a pressure plate, a piston cylinder, and a differential assembly housed within the housing. A front housing and a rear support are mounted on the housing, and a sun gear and a drive gear are mounted on the differential assembly. A driven gear is positioned between the front housing and the drive gear, and a connecting flange is provided on the driven gear. A cover is positioned between the connecting flange and the front housing, and a shroud is positioned between the connecting flange and the cover. A brake pad is positioned between the sun gear and the pressure plate and the piston cylinder, and a straight pin is positioned between the brake pad and the housing. A spring pin is positioned between the pressure plate, the piston cylinder, and the housing.

[0017] The technical effect of the above technical solution is that the basic technical solution of the present invention is composed of the front cylinder shell, housing, differential assembly, sun gear, brake pad, piston cylinder, straight pin, spring pin, rear support, cover, connecting flange, shroud, driven gear and driving gear, which solves the technical problem of the present invention.

[0018] One related technical solution involves a housing that is a cylindrical body with convex holes, vent plugs, discharge plugs, and hydraulic pipe joints on its left and right sides. The middle cavity of the housing is configured to accommodate the differential assembly and the driven gear. The expansion holes on the left and right sides of the housing are configured to accommodate the sun gear, brake pads, piston cylinder, straight pin, spring pin, and pressure plate, respectively. The inner end contraction holes on the left and right sides of the housing are configured to rotatably connect with the sun gear. The inner wall of the middle contraction hole on the left and right sides of the housing is configured to contact the piston cylinder. The stepped surfaces of the convex holes on the left and right sides of the housing are configured to accommodate the straight pin and spring pin, respectively. The rear end of the housing is configured to connect with the rear support via an intermediate connecting bolt, and the front end of the housing is configured to connect with the inner end of the front cylindrical housing via an intermediate connecting bolt. The hydraulic pipe joints of the housing are distributed correspondingly to the piston cylinder.

[0019] The technical effect of the above technical solution is that it realizes the formation of an intermediate integrated component and realizes the connection and support of the perforated box.

[0020] One of the related technical solutions is that the differential assembly is configured as a gear-type differential and the housing of the differential assembly is configured to be connected to the housing, the input end of the differential assembly is configured to be meshed with the driven gear and the output end of the differential assembly is configured to be connected to the sun gear, and the housing of the differential assembly is configured to be connected to the driven gear through the gear.

[0021] The technical effect of the above solution is that it enables the formation of an intermediate integrated component and achieves differential output processing.

[0022] One of the related technical solutions is that the sun gear is configured as a convex gear and the middle of the sun gear's retractable body is configured to be rotatably connected to the housing, the outer end of the sun gear's retractable body is configured to be connected to the differential assembly, the sun gear's extension body is configured to be connected through to the brake pads and piston cylinder, and the sun gear is configured to be meshed with a gear located on the half shaft.

[0023] The technical effect of the above solution is that it enables the assembly of an intermediate integrated component, thereby enabling the drive of the gear located on the half-shaft.

[0024] One related technical solution is that the brake pad is configured to include a driven friction pad portion, an active friction pad portion I, and an active friction pad portion II. The driven friction pad portion, active friction pad portion I, and active friction pad portion II are respectively configured to be recessed into the housing. The edge of the driven friction pad portion is configured to be fitted with a straight pin shaft. The inner end face of active friction pad portion I and the inner end face of active friction pad portion II are respectively configured to be in contact with the end face of the driven friction pad portion. The outer end face of active friction pad portion I is configured to be connected to the piston cylinder. The outer end face of active friction pad portion II is configured to be connected to the pressure plate. The middle of the driven friction pad portion is configured to be connected to the sun gear. The middle of active friction pad portion I and the middle of active friction pad portion II are respectively configured to be fitted with the sun gear.

[0025] One of the related technical solutions is that the driven friction plate part, the active friction plate part I and the active friction plate part II are respectively configured as friction disc-shaped bodies with a through hole in the middle, and the inner wall of the through hole of the driven friction plate part is configured to be connected to the sun gear, and the through hole of the active friction plate part I and the through hole of the active friction plate part II are respectively configured to be connected to the sun gear in a set-type connection.

[0026] One of the related technical solutions is that the piston cylinder is configured as a disc-shaped body with a π-shaped cross section and is configured to be submerged in connection with the housing. The peripheral side of the piston cylinder's constricted body is configured to be in contact with the housing and the outer end face of the piston cylinder is configured to be in contact with the brake pad.

[0027] One of the related technical solutions is that the flat pin is configured as a flat rod-shaped body and is configured to be recessed into the housing. The inner end of the flat pin is configured to be embedded in the housing and the middle of the flat pin is configured to be connected to the brake pad. The outer end of the flat pin is configured to be connected through the pressure plate and the flat pin is configured to be arranged at intervals along the periphery of the convex hole of the housing.

[0028] One related technical solution involves a spring pin comprising an inner rod, a cap, an outer rod, a cylinder, and a spring. The inner rod, cap, outer rod, cylinder, and spring are respectively configured to be recessed into the housing. The inner end of the inner rod is recessed into the blind hole of the cap. The outer rod is connected through the cylinder and spring, with its inner end face connected to the bottom wall of the blind hole of the cap. One end of the spring is in contact with the inner edge face of the cap, and the other end is in contact with the pressure plate. The outer edge face of the cap is in contact with the piston cylinder. The outer end of the inner rod is connected through the piston cylinder and embedded in the housing. The cylinder is embedded in the pressure plate. The spring pins are arranged at intervals along the periphery of the convex-shaped hole in the housing.

[0029] One of the related technical solutions is that the inner rod and outer rod are respectively set as straight shaft-shaped bodies, the cap part is set as a disc-shaped body with a blind hole in the middle, the cylinder part is set as a tubular body, and the spring part is set as a column spring.

[0030] One of the related technical solutions is that the pressure plate is configured as a disc-shaped body with an outward protrusion in the middle and is configured to be submerged in connection with the housing. The pressure plate is configured to be connected with the spring pin shaft. The inner end face of the pressure plate is configured to be connected in contact with the brake pad and the outer end face of the plate is configured to be connected in contact with the gear located on the half shaft.

[0031] The technical effects of the above seven technical solutions are: to achieve the formation of an intermediate integrated component and to achieve the generation of braking force through high-pressure liquid.

[0032] One of the related technical solutions is that the rear support is configured as a shaft-like body with a flanged disc, and the flanged disc of the rear support is respectively configured to be connected to the housing by intermediate connecting bolts, and the rear end face of the rear support is configured to be connected to the rear support frame.

[0033] The technical effect of the above technical solution is that it realizes the formation of an intermediate integrated component and achieves a sealed connection of the rear head seat body.

[0034] One of the related technical solutions is that the front shell is configured as a cylindrical body with a flanged disc and the flanged disc of the front shell is configured to be connected to the housing by a middle connecting bolt. The front end of the front shell is configured to be connected to the cover by a middle connecting bolt and the front shell is configured to be connected to the drive gear in a sleeve-type connection. The front end of the front shell is configured to be connected to the front support frame.

[0035] The technical effect of the above technical solution is that it realizes the formation of an intermediate integrated component and realizes the connection and support of the front head cylinder.

[0036] One of the related technical solutions is that the driven gear is a bevel gear and the driving gear is a bevel gear with a central shaft. The driven gear is configured to be recessed into the housing. The driven gear is configured to be meshed with the driving gear and the differential assembly. The middle of the driven gear is configured to be rotatably connected to the differential assembly. The outer end of the driving gear is configured to be rotatably connected to the front housing and the outer end of the driving gear is configured to be connected to the connecting flange.

[0037] One of the related technical solutions is that the connecting flange is configured as a flange coupling and the inner end face of the connecting flange is configured to be connected to the drive gear in a sleeve-type connection, and the inner end of the connecting flange is configured to be connected to the cover and the shield through-type connection respectively.

[0038] The technical effects of the above two solutions are: they enable the formation of an intermediate integrated component, and enable gear transmission docking between the drive shaft and the differential assembly.

[0039] One of the related technical solutions is that the cover is configured as a shaft cover and is connected to the front cylinder shell by a middle connecting bolt, the cover is configured to be sleeved with the connecting flange and is configured to be through-type connected with the cover.

[0040] One of the related technical solutions is that the cover is set as a rubber dust cover and the cover is respectively set to be connected to the cover and the connecting flange in a sleeve manner.

[0041] The technical effects of the above two solutions are: they enable the formation of an intermediate integrated component and achieve sealing treatment of the port of the front shell.

[0042] One of the related technical solutions involves installing bearings between the sun gear and the housing, and between the front cylinder housing and the drive gear, and installing sealing rings between the connecting flange and the cover, the front cylinder housing and the housing, the piston cylinder and the housing, and the rear support and the housing.

[0043] The technical effect of the above technical solution is that it enables the formation of an intermediate integrated component and the embedding and installation of functional components.

[0044] One of the related technical solutions is that the gearbox housing and differential assembly are arranged in a gear braking manner with the sun gear, brake pads, piston cylinder, straight pin shaft and spring pin shaft, and the driven gear and driving gear are arranged in a gear transmission manner with the gearbox housing, differential assembly, sun gear, brake pads, piston cylinder, straight pin shaft and spring pin shaft, and the driven gear and driving gear are arranged in a gear transmission manner with the gearbox housing, differential assembly, sun gear, brake pads, piston cylinder, straight pin shaft and spring pin shaft, and the rear support, front cylinder housing, cover, connecting flange and cover are arranged in an end support manner.

[0045] One of the related technical solutions is that a sun gear, a brake pad, a piston cylinder, multiple straight pins and multiple spring pins are configured to form a set of wheel and axle components, and two sets of wheel and axle components are arranged in the housing.

[0046] One of the related technical solutions is a method for using a rear axle gearbox assembly based on an embedded braking system. The steps are as follows: the gearbox housing and differential assembly drive the sun gear to output rotational torque, the sun gear drives the gear located on the half shaft to rotate, and the braking assembly brakes the rotational speed of the sun gear, thereby placing the differential state of the rear axle gearbox assembly under external interference.

[0047] The technical effect of the above technical solution is that it highlights the technical feature of making the differential state of the rear axle gearbox assembly subject to external interference, and introduces its application in the technical field of the method of using the rear axle gearbox assembly based on the embedded braking system.

[0048] One related technical solution involves the following steps: the drive shaft drives the drive gear to rotate in the front housing via a connecting flange; through the meshing of the drive gear and driven gear, a rotational torque is input to the input end of the differential assembly; and through the output end of the differential assembly, the sun gear is driven to rotate, thus achieving differential rotation drive of the two sun gears. High-pressure fluid acts on the piston cylinder through the hydraulic pipe joint of the housing; the piston cylinder overcomes the spring part, causing the piston cylinder to move outward in the expansion hole of the housing, so that the outer end face of the piston cylinder acts on the outer end face of the active friction plate part I, causing the main... The inner end faces of the moving friction plate part I and the driving friction plate part II act on the end face of the driven friction plate part, generating a braking force on the sun gear and putting the sun gear in a braking state. When the high-pressure liquid no longer acts on the piston cylinder, under the elastic energy storage of the spring part, the piston cylinder moves inward in the expansion hole of the housing, causing the outer end face of the piston cylinder to separate from the outer end face of the driving friction plate part I, and causing the inner end faces of the driving friction plate part I and the driving friction plate part II to separate from the end faces of the driven friction plate part, no longer generating a braking force on the sun gear, and putting the sun gear in a free state.

[0049] The technical effect of the above solution is that it enables braking intervention in the output differential state of the rear axle gearbox assembly.

[0050] In this technical solution, the housing, differential assembly, and sun gear are basic components and essential technical features of the invention. The front cylinder housing, brake pads, piston cylinder, straight pin, spring pin, rear support, cover, connecting flange, shroud, driven gear, and driving gear are functional components that enable other technical effects of the invention. The design of the driven friction plate, driving friction plate I, driving friction plate II, inner rod, cap, outer rod, cylinder, and spring are technical features that comply with the Patent Law and its implementing regulations.

[0051] In this technical solution, the differential state of the rear axle gearbox assembly under external interference is achieved by the braking component.

[0052] In this technical solution, the housing, differential assembly, sun gear, and brake assembly that put the differential state of the rear axle gearbox assembly under external interference are important technical features. In the technical field of rear axle gearbox assembly and its use based on embedded braking system, this solution is novel, inventive, and practical. The terminology used in this technical solution can be explained and understood using patent literature in this technical field. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of one of the first embodiments of a rear axle gearbox assembly based on an embedded braking system according to the present invention. Figure 2 This diagram illustrates the connection relationship between the front housing 11, the casing 12, the sun gear 16, the straight pin 10, the spring pin 19, and the connecting flange 102. Figure 3 This is a schematic diagram of the spring pin 19. Cylinder housing-11, housing-12, differential assembly-15, sun gear-16, brake pad-17, piston cylinder-18, straight pin-10, spring pin-19, rear support-14, cover-101, connecting flange-102, cover-103, driven gear-911, driving gear-912, driven friction plate part-171, driving friction plate part I-172, driving friction plate part II-173, inner rod part-191, cap part-192, outer rod part-193, cylinder part-194, spring part-195. Detailed Implementation

[0055] According to the examination guidelines, terms such as “having,” “comprising,” and “including” used in this invention should be understood to mean without dispensing the presence or addition of one or more other elements or combinations thereof.

[0056] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0058] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. In addition, unless otherwise specified, the equipment and materials used in the following embodiments are commercially available. Unless otherwise specified, please make improvements according to conventional methods in the art.

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely one embodiment of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] A rear axle gearbox assembly based on an embedded braking system. Figure 1 As one of the first embodiments of the present invention, this embodiment is described in detail with reference to the accompanying drawings. It includes a front housing 11, a housing 12, a differential assembly 15, a sun gear 16, a brake pad 17, a piston cylinder 18, a straight pin 10, a spring pin 19, a pressure plate 13, a rear support 14, a cover 101, a connecting flange 102, a cover 103, a driven gear 911, and a driving gear 912. The pressure plate 13, piston cylinder 18, and differential assembly 15 are respectively disposed within the housing 12. The front housing 11 and rear support 14 are respectively disposed on the housing 12, and the differential assembly 15 is respectively provided with… The device includes a sun gear 16 and a drive gear 912. A driven gear 911 is provided between the front housing 11 and the drive gear 912, and a connecting flange 102 is provided on the driven gear 911. A cover 101 is provided between the connecting flange 102 and the front housing 11, and a cover 103 is provided between the connecting flange 102 and the cover 101. A brake pad 17 is provided between the sun gear 16, the pressure plate 13, and the piston cylinder 18, and a straight pin 10 is provided between the brake pad 17 and the housing 12. A spring pin 19 is provided between the pressure plate 13, the piston cylinder 18, and the housing 12.

[0061] The second embodiment of the present invention will be described in detail with reference to the accompanying drawings. In this embodiment, the housing 12 is configured as a cylindrical body with convex holes, a vent plug, a drain plug, and a hydraulic pipe connector on its left and right sides. The middle cavity of the housing 12 is configured to be accommodatingly connected to the differential assembly 15 and the driven gear 911. The expansion holes on the left and right sides of the housing 12 are configured to be accommodatingly connected to the sun gear 16, brake pad 17, piston cylinder 18, straight pin 10, spring pin 19, and pressure plate 13, respectively. The contraction holes at the inner ends of the left and right sides of the housing 12 are configured to be connected to the sun gear 16. The housing 12 is connected in a dynamic manner. The inner wall of the middle contraction hole on the left and right sides of the housing 12 is configured to be connected to the piston cylinder 18 in contact. The stepped surfaces of the convex holes on the left and right sides of the housing 12 are respectively configured to be connected to the straight pin 10 and the spring pin 19 in a receiving manner. The rear end port of the housing 12 is configured to be connected to the rear support 14 through the intermediate connecting bolt, and the front end port of the housing 12 is configured to be connected to the inner port of the front cylinder 11 through the intermediate connecting bolt. The hydraulic pipe joints of the housing 12 are distributed correspondingly to the piston cylinder 18.

[0062] The housing 12 forms a support connection point for the front housing 11, differential assembly 15, sun gear 16, brake pads 17, piston cylinder 18, straight pin 10, spring pin 19, pressure plate 13, and driven gear 911. The housing 12 realizes the connection with the front housing 11, the differential assembly 15, the sun gear 16, the brake pads 17, the piston cylinder 18, the straight pin 10, the spring pin 19, the pressure plate 13, and the driven gear 911. Its technical purpose is to serve as a support carrier for the front housing 11, differential assembly 15, piston cylinder 18, straight pin 10, and spring pin 19.

[0063] In this embodiment, the differential assembly 15 is configured as a gear-type differential and the housing of the differential assembly 15 is configured to be connected to the housing 12. The input end of the differential assembly 15 is configured to be meshed with the driven gear 911 and the output end of the differential assembly 15 is configured to be connected to the sun gear 16. The housing of the differential assembly 15 is configured to be connected to the driven gear 911 through the gear.

[0064] The differential assembly 15 forms a support connection point for the housing 12, the sun gear 16, and the driven gear 911. The differential assembly 15 realizes the connection with the housing 12, the sun gear 16, and the driven gear 911. Its technical purpose is to serve as a component for differential processing of the sun gear 16.

[0065] In this embodiment, the sun gear 16 is configured as a U-shaped gear and the middle of the retractable body of the sun gear 16 is configured to be rotatably connected to the housing 12. The outer end of the retractable body of the sun gear 16 is configured to be connected to the differential assembly 15. The extension body of the sun gear 16 is configured to be connected through to the brake pad 17 and the piston cylinder 18, and the sun gear 16 is configured to be meshed with the gear located on the half shaft.

[0066] The sun gear 16 forms a support connection point for the housing 12, differential assembly 15, brake pads 17, and piston cylinder 18. The sun gear 16 realizes the connection with the housing 12, the differential assembly 15, the brake pads 17, and the piston cylinder 18. Its technical purpose is to serve as a component that drives the gear located on the half shaft to rotate.

[0067] In this embodiment, the brake pad 17 is configured to include a driven friction pad portion 171, an active friction pad portion I 172, and an active friction pad portion II 173. The driven friction pad portion 171, the active friction pad portion I 172, and the active friction pad portion II 173 are respectively configured to be recessed into the housing 12. The edge of the driven friction pad portion 171 is configured to be fitted with the straight pin shaft 10. The inner end face of the active friction pad portion I 172 and the inner end face of the active friction pad portion II 173 are respectively configured to be in contact with the end face of the driven friction pad portion 171. The outer end face of the active friction pad portion I 172 is configured to be connected to the piston cylinder 18. The outer end face of the active friction pad portion II 173 is configured to be connected to the pressure plate 13. The middle of the driven friction pad portion 171 is configured to be connected to the sun gear 16. The middle of the active friction pad portion I 172 and the middle of the active friction pad portion II 173 are respectively configured to be fitted with the sun gear 16.

[0068] The brake pad 17 forms a support connection point for the housing 12, the sun gear 16, the piston cylinder 18, the straight pin shaft 10, and the pressure plate 13. The driven friction pad part 171, the active friction pad part I 172, and the active friction pad part II 173 achieve connection with the housing 12 and the sun gear 16. The active friction pad part I 172 achieves connection with the piston cylinder 18. The driven friction pad part 171 achieves connection with the straight pin shaft 10. The active friction pad part II 173 achieves connection with the pressure plate 13. Its technical purpose is to serve as one of the components for braking the sun gear 16.

[0069] In this embodiment, the driven friction plate portion 171, the active friction plate portion I 172, and the active friction plate portion II 173 are respectively configured as friction discs with a through hole in the middle, and the inner wall of the through hole of the driven friction plate portion 171 is configured to be connected to the sun gear 16. The through holes of the active friction plate portion I 172 and the active friction plate portion II 173 are respectively configured to be fitted and connected to the sun gear 16.

[0070] Its technical objective is to achieve friction disc braking of the sun gear 16.

[0071] In this embodiment, the piston cylinder 18 is configured as a disc-shaped body with a π-shaped cross section and is configured to be submerged in connection with the housing 12. The peripheral side of the constricted body of the piston cylinder 18 is configured to be in contact with the housing 12 and the outer end face of the piston cylinder 18 is configured to be in contact with the brake pad 17.

[0072] The piston cylinder 18 forms a support connection point for the housing 12 and the brake pad 17. The piston cylinder 18 realizes the connection with the housing 12 and the connection with the brake pad 17. Its technical purpose is to serve as the second component for braking the sun gear 16.

[0073] In this embodiment, the straight pin 10 is configured as a straight rod and is recessed into the housing 12. The inner end of the straight pin 10 is embedded in the housing 12 and the middle of the straight pin 10 is connected to the brake pad 17. The outer end of the straight pin 10 is connected through the pressure plate 13 and the straight pin 10 is arranged at intervals along the periphery of the convex hole of the housing 12.

[0074] The straight pin 10 forms a support connection point for the housing 12, brake pad 17 and pressure plate 13. The straight pin 10 realizes the connection with the housing 12, the brake pad 17 and the pressure plate 13. Its technical purpose is to be used as the second component for braking the sun gear 16.

[0075] In this embodiment, the spring pin 19 is configured to include an inner rod portion 191, a cap portion 192, an outer rod portion 193, a cylinder portion 194, and a spring portion 195. The inner rod portion 191, cap portion 192, outer rod portion 193, cylinder portion 194, and spring portion 195 are respectively configured to be recessed into the housing 12. The inner end of the inner rod portion 191 is configured to be recessed into the blind hole of the cap portion 192. The outer rod portion 193 is configured to be through-connected to both the cylinder portion 194 and the spring portion 195, and the inner end face of the outer rod portion 193 is configured to be connected to the bottom wall of the blind hole of the cap portion 192. One end of the spring portion 195 is configured to contact the inner end face of the edge of the cap portion 192, and the other end of the spring portion 195 is configured to contact the pressure plate 13. The outer end face of the edge of the cap portion 192 is configured to contact the piston cylinder 18. The outer end of the inner rod portion 191 is configured to be connected through the piston cylinder 18, and the outer end of the inner rod portion 191 is configured to be embedded in the housing 12. The cylinder portion 194 is configured to be embedded in the pressure plate 13, and the spring pins 19 are configured to be arranged at intervals along the periphery of the convex hole of the housing 12.

[0076] The spring pin 19 forms a support connection point for the housing 12, piston cylinder 18, and pressure plate 13. The inner rod 191, cap 192, outer rod 193, cylinder 194, and spring 195 connect the housing 12, the inner rod 191 and cap 192 connect the piston cylinder 18, the cylinder 194 connect the pressure plate 13, and the outer rod 193 and spring 195 connect the cap 192 and cylinder 194. Its technical purpose is to serve as the third component for braking the sun gear 16.

[0077] In this embodiment, the inner rod portion 191 and the outer rod portion 193 are respectively configured as straight shaft-shaped bodies, the cap portion 192 is configured as a disc-shaped body with a blind hole in the middle, the cylinder portion 194 is configured as a tubular body, and the spring portion 195 is configured as a column spring.

[0078] Its technical objective is to achieve the resetting process of piston cylinder 18 in housing 12.

[0079] In this embodiment, the pressure plate 13 is configured as a disc-shaped body with an outward protrusion in the middle and is configured to be submerged in connection with the housing 12. The pressure plate 13 is configured to be connected with the spring pin 19. The inner end face of the pressure plate 13 is configured to be in contact with the brake pad 17 and the outer end face of the plate 13 is configured to be in contact with the gear located on the half shaft.

[0080] The pressure plate 13 forms a support connection point for the housing 12, brake pad 17 and spring pin 19. The pressure plate 13 realizes the connection with the housing 12, the connection with the brake pad 17 and the connection with the spring pin 19. Its technical purpose is to be used as the fourth component for braking the sun gear 16.

[0081] In this embodiment, the driven gear 911 is a bevel gear and the driving gear 912 is a bevel gear with a central shaft. The driven gear 911 is recessed into the housing 12. The driven gear 911 is meshed with the driving gear 912 and the differential assembly 15, and the middle of the driven gear 911 is rotatably connected to the differential assembly 15. The outer end of the driving gear 912 is rotatably connected to the front housing 11 and is connected to the connecting flange 102.

[0082] The driven gear 911 and the driving gear 912 form a support connection point for the housing 12, the differential assembly 15, the front housing 11, and the connecting flange 1029. The driven gear 911 connects to the housing 12 and the differential assembly 15, while the driving gear 912 connects to the front housing 11 and the connecting flange 102. Its technical purpose is to serve as a component for connecting the drive shaft and the differential assembly 15.

[0083] In this embodiment, the rear support 14 is configured as a shaft with a flanged disc, and the flanged disc of the rear support 14 is respectively configured to be connected to the housing 12 by an intermediate connecting bolt. The rear end face of the rear support 14 is configured to be connected to the rear support frame.

[0084] The rear support 14 forms a support connection point for the housing 12, and the connection with the housing 12 is achieved by the rear support 14. Its technical purpose is to serve as a component for connecting the rear support frame.

[0085] In this embodiment, the front shell 11 is configured as a cylindrical body with a flanged disc and the flanged disc of the front shell 11 is configured to be connected to the housing 12 by a middle connecting bolt. The front end port of the front shell 11 is configured to be connected to the cover 101 by a middle connecting bolt and the front shell 11 is configured to be connected to the drive gear 912 in a sleeve-type connection. The front end head of the front shell 11 is configured to be connected to the front support frame.

[0086] The front cylindrical shell 11 forms a support connection point for the housing 12, the cover 101, and the drive gear 912. The front cylindrical shell 11 is connected to the housing 12, the cover 101, the drive gear 912, and the housing 12. Its technical purpose is to serve as a component for connecting to the front support frame.

[0087] In this embodiment, the connecting flange 102 is configured as a flange coupling and the inner end face of the connecting flange 102 is configured to be fitted with the drive gear 912. The inner end of the connecting flange 102 is configured to be connected through the cover 101 and the cover 103 respectively.

[0088] The connecting flange 102 forms a support connection point for the cover 101, the cover 103 and the drive gear 912. The connecting flange 102 realizes the connection with the cover 101, the cover 103 and the drive gear 912. Its technical purpose is to serve as a component for connecting the drive shaft and the drive gear 912.

[0089] In this embodiment, the cover 101 is configured as a shaft cover and is connected to the front cylinder shell 11 by a middle connecting bolt. The cover 101 is configured to be fitted with the connecting flange 102 and is configured to be connected through the cover 103.

[0090] The cover 101 forms a support connection point for the front shell 11, the connecting flange 102 and the cover 103. The cover 101 realizes the connection with the front shell 11, the connection with the connecting flange 102 and the cover 103. Its technical purpose is to serve as a component for sealing the connection between the connecting flange 102 and the front shell 11.

[0091] In this embodiment, the cover 103 is configured as a rubber dust cover and is respectively configured to be fitted and connected to the cover 101 and the connecting flange 102.

[0092] The cover 103 forms a support connection point for the cover 101 and the connecting flange 102. The cover 103 realizes the connection with the cover 101 and the connection with the connecting flange 102. Its technical purpose is to serve as a component for sealing the connection flange 102 and the cover 101.

[0093] In this embodiment, bearings are respectively provided between the sun gear 16 and the housing 12, and between the front housing 11 and the drive gear 912. Sealing rings are respectively provided between the connecting flange 102 and the cover 101, between the front housing 11 and the housing 12, between the piston cylinder 18 and the housing 12, and between the rear support 14 and the housing 12.

[0094] In this embodiment, the housing 12 and differential assembly 15, along with the sun gear 16, brake pad 17, piston cylinder 18, straight pin 10, and spring pin 19, are arranged in a gear braking manner. The housing 12, differential assembly 15, sun gear 16, brake pad 17, piston cylinder 18, straight pin 10, and spring pin 19, along with the driven gear 911 and driving gear 912, are arranged in a gear transmission manner. The housing 12, differential assembly 15, sun gear 16, brake pad 17, piston cylinder 18, straight pin 10, and spring pin 19, along with the rear support 14, front housing 11, cover 101, connecting flange 102, and cover 103, are arranged in an end-support manner. One sun gear 16, one brake pad 17, one piston cylinder 18, multiple straight pins 10, and multiple spring pins 19 are arranged to form a set of wheel and axle components, and two sets of wheel and axle components are arranged in the housing 12.

[0095] The present invention will be further described below with reference to embodiments. These embodiments are intended to illustrate the present invention and not to further limit the present invention.

[0096] A method for using a rear axle gearbox assembly based on an embedded braking system includes the following steps: The drive shaft drives the drive gear 912 to rotate in the front housing 11 via the connecting flange 102. Through the meshing of the drive gear 912 and the driven gear 911, a rotational torque is input to the input end of the differential assembly 15. This torque, through the output end of the differential assembly 15, drives the sun gear 16 to rotate, thus achieving differential rotation drive of the two sun gears 16. When high-pressure fluid acts on the piston cylinder 18 through the hydraulic pipe joint of the housing 12, the piston cylinder 18 overcomes the spring part 195, causing the piston cylinder 18 to move outward in the expansion hole of the housing 12. This causes the outer end face of the piston cylinder 18 to act on the outer end face of the active friction plate part I 172, and the inner end faces of the active friction plate part I 172 and the inner end faces of the active friction plate part II 173 to act on the end face of the driven friction plate part 171, generating a braking force on the sun gear 16 and putting the sun gear 16 in a braking state. When the high-pressure liquid no longer acts on the piston cylinder 18, under the elastic energy storage of the spring part 195, the piston cylinder 18 moves inward in the expansion hole of the housing 12, causing the outer end face of the piston cylinder 18 to separate from the outer end face of the active friction plate part I 172, and causing the inner end faces of the active friction plate part I 172 and the inner end faces of the active friction plate part II 173 to separate from the end face of the driven friction plate part 171, so that the braking force on the sun gear 16 is no longer generated, and the sun gear 16 is in a free state.

[0097] In verifying this invention, the inventors abandoned the existing technical features of differential assemblies and first proposed a technical feature that places the differential state of the rear axle gearbox assembly under external interference. This resulted in the first unexpected technical effect: increasing the difference range of the rotational speeds of the two half-shafts, thus improving the differential processing effect of the rear axle gearbox assembly. The second unexpected technical effect: enabling differential output through the housing 12, differential assembly 15, and sun gear 16, thus improving the stability of the half-shaft rotation. The third unexpected technical effect: enabling braking of the sun gear 16 through the brake pads 17, piston cylinder 18, straight pin 10, spring pin 19, and rear support 14, thus improving the smoothness of the sun gear 16's braking. The fourth unexpected technical effect: enabling braking through the front housing 11 and connecting flange 1... 02. The driven gear 911 and the driving gear 912 input rotational torque to the differential assembly 15, eliminating the impact force on the differential assembly 15 and improving the installation stability of the rear axle gearbox assembly. This results in the fifth unexpected technical effect: port sealing is achieved through the rear support 14, cover 101, and shield 103, expanding the application range of the rear axle gearbox assembly. This results in the sixth unexpected technical effect: the differential assembly is no longer the only option; safety protection is provided for the input and output ends of the differential assembly, increasing the service life of the rear axle gearbox assembly. This results in the seventh unexpected technical effect: the technical solution for the rear axle gearbox assembly is extended to the application of disc brakes and gear transmission, optimizing the motion state of the rear axle gearbox assembly and meeting the needs of the rear axle gearbox assembly in complex operating environments.

[0098] In a second embodiment of the invention, the housing 12, differential assembly 15, sun gear 16, and brake assembly are interconnected in such a way that the differential state of the rear axle gearbox assembly is subjected to external disturbance.

[0099] In this embodiment, the sun gear 16 and the braking assembly are connected to the housing 12 and the differential assembly 15 in a manner that brakes according to the rotational speed.

[0100] In this embodiment, the braking assembly is configured to include a brake pad 17, a piston cylinder 18, a straight pin 10, a spring pin 19, and a pressure plate 13.

[0101] In this embodiment, a first accessory device is also included, and the first accessory device is configured as a rear support 14.

[0102] In this embodiment, a second accessory device is also included, and the second accessory device is configured as the front shell 11.

[0103] In this embodiment, a third accessory device is also included, and the third accessory device is configured to include a driven gear 911 and a driving gear 912.

[0104] In this embodiment, a fourth accessory device is also included, and the fourth accessory device is configured as a connecting flange 102.

[0105] In this embodiment, a fifth accessory device is also included, and the fifth accessory device is configured to include a cover 101 and a shield 103.

[0106] The second embodiment of the present invention is based on the first embodiment. In the second embodiment of the present invention, the steps are as follows: the housing 12 and the differential assembly 15 drive the sun gear 16 to output rotational torque, the sun gear 16 drives the gear located on the half shaft to rotate, and the braking assembly brakes the rotational speed of the sun gear 16, thereby making the differential state of the rear axle gearbox assembly under external interference.

[0107] The second embodiment of the present invention is based on the first embodiment.

[0108] This invention has the following characteristics: 1. By designing the housing 12, differential assembly 15, sun gear 16, and braking assembly, the housing 12 and differential assembly 15 enable the sun gear 16 to output rotational torque. The sun gear 16 drives the gear located on the half shaft to rotate. The braking assembly brakes the rotational speed of the sun gear 16, thus keeping the differential state of the rear axle gearbox assembly under external interference. This solves the technical problems of the differential assembly and improves the transmission efficiency of the rear axle gearbox assembly.

[0109] 2. Due to the design of brake pads 17, piston cylinder 18, straight pin 10, spring pin 19 and pressure plate 13, friction-plate braking of sun gear 16 is achieved.

[0110] 3. Due to the design of the rear support 14 and the front cylindrical shell 11, the end sealing connection of the box shell 12 is realized.

[0111] 4. Due to the design of connecting flange 102, driven gear 911 and driving gear 912, gear transmission input to differential assembly 15 is realized.

[0112] 5. Due to the design of the cover 101 and the cover 103, the front cylinder shell 11 is sealed.

[0113] 6. Because the design limits the numerical range of the structural shape, the numerical range is a technical feature in the technical solution of this invention, and is not a technical feature obtained by formula calculation or a limited number of experiments. The experiment shows that the technical feature of this numerical range has achieved very good technical effect.

[0114] 7. Due to the design of the technical features of this invention, and the combined effect of the individual and collective technical features, experiments have shown that the performance indicators of this invention are at least 1.7 times that of existing performance indicators, and the invention has been evaluated to have good market value.

[0115] Other technical features that connect the housing 12, differential assembly 15, sun gear 16, and brake assembly to the rear axle gearbox assembly under external interference are also embodiments of the present invention. Furthermore, the technical features of the above embodiments can be combined in any way. In order to meet the requirements of the Patent Law, the Patent Implementation Regulations, and the Examination Guidelines, all possible combinations of the technical features in the above embodiments will not be described.

[0116] The above embodiments are merely one implementation of the rear axle gearbox assembly and usage method based on the embedded braking system provided by the present invention. Other modifications to the solution provided by the present invention, additions or reductions of features or steps, or application of the present invention to other technical fields similar to the present invention, all fall within the protection scope of the present invention.

Claims

1. A rear axle gearbox assembly based on an embedded braking system, characterized in that: It includes a housing (12) for use as a support, a differential assembly (15) disposed in the housing (12), a sun gear (16) disposed between the differential assembly (15) and the housing (12), and a braking assembly disposed between the sun gear (16) and the housing (12).

2. The rear axle gearbox assembly based on an embedded braking system according to claim 1, characterized in that: The housing (12), differential assembly (15), sun gear (16), and brake assembly are interconnected in such a way that the differential state of the rear axle gearbox assembly is subjected to external disturbance.

3. The rear axle gearbox assembly based on an embedded braking system according to claim 2, characterized in that: The sun gear (16) and braking assembly are connected to the housing (12) and differential assembly (15) in a manner that brakes according to the rotational speed.

4. The rear axle gearbox assembly based on an embedded braking system according to claim 1, characterized in that: The braking assembly is configured to include brake pads (17), piston cylinder (18), straight pin (10), spring pin (19), and pressure plate (13). Alternatively, it may also include a first accessory device and the first accessory device may be configured as a rear support (14). Alternatively, it may also include a second accessory device, and the second accessory device may be configured as a front casing (11). Alternatively, it may also include a third accessory device, and the third accessory device is configured to include a driven gear (911) and a driving gear (912). Alternatively, it may also include a fourth accessory device and the fourth accessory device may be configured as a connecting flange (102). Alternatively, it may also include a fifth accessory device and the fifth accessory device may be configured to include a cover (101) and a shield (103).

5. The rear axle gearbox assembly based on an embedded braking system according to claim 4, characterized in that: A pressure plate (13), a piston cylinder (18), and a differential assembly (15) are respectively provided in the housing (12). A front housing (11) and a rear support (14) are respectively provided on the housing (12), and a sun gear (16) and a drive gear (912) are respectively provided on the differential assembly (15). A driven gear (911) is provided between the front housing (11) and the drive gear (912), and a connecting flange (102) is provided on the driven gear (911). A cover (101) is provided between the flange (102) and the front cylinder shell (11), and a cover (103) is provided between the connecting flange (102) and the cover (101). A brake pad (17) is provided between the sun gear (16), the pressure plate (13), and the piston cylinder (18). A straight pin (10) is provided between the brake pad (17) and the housing (12). A spring pin (19) is provided between the pressure plate (13), the piston cylinder (18), and the housing (12).

6. The rear axle gearbox assembly based on an embedded braking system according to claim 5, characterized in that: The housing (12) is a cylindrical body with convex holes, vent plugs, drain plugs and hydraulic pipe joints on the left and right sides. The middle cavity of the housing (12) is respectively configured to accommodate the differential assembly (15) and the driven gear (911). The expansion holes on the left and right sides of the housing (12) are respectively configured to accommodate the sun gear (16), brake pad (17), piston cylinder (18), straight pin (10), spring pin (19) and pressure plate (13). The contraction holes at the inner ends of the left and right sides of the housing (12) are configured to accommodate the rotation of the sun gear (16). The housing (12) is connected in a contact manner with the piston cylinder (18) through the middle contraction hole on the left and right sides. The stepped surfaces of the convex holes on the left and right sides of the housing (12) are respectively connected to the straight pin (10) and the spring pin (19) through a receiving manner. The rear end of the housing (12) is connected to the rear support (14) via a middle connecting bolt, and the front end of the housing (12) is connected to the inner end of the front cylinder shell (11) via a middle connecting bolt. The hydraulic pipe joints of the housing (12) are distributed correspondingly to the piston cylinder (18). Alternatively, the differential assembly (15) may be configured as a gear-type differential, with its housing connected to the housing (12), its input end connected to the driven gear (911), its output end connected to the sun gear (16), and its housing connected to the driven gear (911) in a through-type connection. Alternatively, the sun gear (16) is configured as a convex gear and the middle of the sun gear (16) is configured to be rotatably connected to the housing (12), the outer end of the sun gear (16) is configured to be connected to and the differential assembly (15), the extension of the sun gear (16) is configured to be connected through to the brake pad (17) and the piston cylinder (18), and the sun gear (16) is configured to be meshed with the gear located on the half shaft.

7. The rear axle gearbox assembly based on an embedded braking system according to claim 5, characterized in that: The brake pad (17) is configured to include a driven friction pad portion (171), a driven friction pad portion I (172), and a driven friction pad portion II (173). The driven friction pad portion (171), driven friction pad portion I (172), and driven friction pad portion II (173) are respectively configured to be recessed into the housing (12). The edge of the driven friction pad portion (171) is configured to be fitted with a straight pin shaft (10). The inner end face of the driven friction pad portion I (172) and the inner end face of the driven friction pad portion II (173) are respectively... The inner end faces are respectively configured to contact the end face of the driven friction plate part (171), the outer end face of the active friction plate part I (172) is configured to connect with the piston cylinder (18), and the outer end face of the active friction plate part II (173) is configured to connect with the pressure plate (13). The middle of the driven friction plate part (171) is configured to connect with the sun gear (16). The middle of the active friction plate part I (172) and the middle of the active friction plate part II (173) are respectively configured to be fitted with the sun gear (16). Alternatively, the driven friction plate part (171), the driving friction plate part I (172), and the driving friction plate part II (173) are each configured as a friction disc-shaped body with a through hole in the middle, and the inner wall of the through hole of the driven friction plate part (171) is configured to be connected to the sun gear (16), and the through holes of the driving friction plate part I (172) and the driving friction plate part II (173) are respectively configured to be fitted together with the sun gear (16). Alternatively, the piston cylinder (18) is configured as a disc-shaped body with a π-shaped cross-section and is configured to be submerged in connection with the housing (12). The constricted peripheral side of the piston cylinder (18) is configured to be in contact with the housing (12), and the outer end face of the piston cylinder (18) is configured to be in contact with the brake pad (17). Alternatively, the straight pin (10) is configured as a straight rod-shaped body and is configured to be recessed into the housing (12). The inner end of the straight pin (10) is configured to be embedded into the housing (12), and the middle of the straight pin (10) is configured to be connected to the brake pad (17). The outer end of the straight pin (10) is configured to be connected through the pressure plate (13), and the straight pin (10) is configured to be spaced along the periphery of the convex hole of the housing (12). Alternatively, the spring pin (19) is configured to include an inner rod portion (191), a cap portion (192), an outer rod portion (193), a cylinder portion (194), and a spring portion (195). The inner rod portion (191), cap portion (192), outer rod portion (193), cylinder portion (194), and spring portion (195) are respectively configured to be recessed into the housing (12). The inner end of the inner rod portion (191) is configured to be recessed into the blind hole of the cap portion (192). The outer rod portion (193) is configured to be through-connected to the cylinder portion (194) and the spring portion (195), respectively. The inner end face of the outer rod portion (193) is configured to be connected to the bottom wall of the blind hole of the cap portion (192). Next, one end of the spring part (195) is configured to contact the inner end face of the edge of the cap part (192), and the other end of the spring part (195) is configured to contact the pressure plate (13). The outer end face of the edge of the cap part (192) is configured to contact the piston cylinder (18). The outer end of the inner rod part (191) is configured to be connected through to the piston cylinder (18), and the outer end of the inner rod part (191) is configured to be embedded in the housing (12). The cylinder part (194) is configured to be embedded in the pressure plate (13), and the spring pins (19) are configured to be arranged at intervals along the periphery of the convex hole of the housing (12). Alternatively, the inner rod (191) and outer rod (193) are respectively configured as straight shafts, and the cap (192) is configured as a disc-shaped body with a blind hole in the middle, the cylinder (194) is configured as a tubular body, and the spring (195) is configured as a columnar spring. Alternatively, the pressure plate (13) is configured as a disc-shaped body with an outward protrusion in the middle and is configured to be recessed into the housing (12). The pressure plate (13) is configured to be connected to the spring pin (19). The inner end face of the pressure plate (13) is configured to be in contact with the brake pad (17) and the outer end face of the plate (13) is configured to be in contact with the gear located on the half shaft. Alternatively, the rear support (14) may be configured as a shaft-like body with a flanged disc, and the flanged discs of the rear support (14) may be connected to the housing (12) via intermediate connecting bolts. The rear end face of the rear support (14) may be connected to the rear support frame. Alternatively, the front housing (11) is configured as a cylindrical body with a flanged disc, and the flanged disc of the front housing (11) is configured to be connected to the housing (12) via an intermediate connecting bolt. The front end of the front housing (11) is configured to be connected to the cover (101) via an intermediate connecting bolt, and the front housing (11) is configured to be fitted with the drive gear (912). The front end of the front housing (11) is configured to be connected to the front support frame. Alternatively, the driven gear (911) may be configured as a bevel gear and the driving gear (912) as a bevel gear with a central shaft. The driven gear (911) may be configured to be recessed into the housing (12), meshing with the driving gear (912) and the differential assembly (15), with the middle of the driven gear (911) being rotatably connected to the differential assembly (15). The outer end of the driving gear (912) may be rotatably connected to the front housing (11) and connected to the connecting flange (102). Alternatively, the connecting flange (102) may be configured as a flange coupling, and the inner end face of the connecting flange (102) may be configured to be fitted with the drive gear (912). The inner ends of the connecting flange (102) may be configured to be connected through the cover (101) and the shield (103), respectively. Alternatively, the cover (101) can be configured as a shaft cover and connected to the front cylinder shell (11) via an intermediate connecting bolt, the cover (101) can be fitted to the connecting flange (102) and connected to the cover (103) through the shaft. Alternatively, the cover (103) may be configured as a rubber dust cover and the cover (103) may be configured to be fitted together with the cover (101) and the connecting flange (102). Alternatively, bearings may be provided between the sun gear (16) and the housing (12), between the front housing (11) and the drive gear (912), and sealing rings may be provided between the connecting flange (102) and the cover (101), between the front housing (11) and the housing (12), between the piston cylinder (18) and the housing (12), and between the rear support (14) and the housing (12).

8. The rear axle gearbox assembly based on an embedded braking system according to any one of claims 1 to 7, characterized in that: The housing (12) and differential assembly (15) are arranged in a gear braking manner with the sun gear (16), brake pads (17), piston cylinder (18), straight pin (10) and spring pin (19), and the housing (12), differential assembly (15), sun gear (16), brake pads (17), piston cylinder (18), straight pin (10) and spring pin (19) are arranged in a gear transmission manner with the driven gear (911) and driving gear (912), and the housing (12), differential assembly (15), sun gear (16), brake pads (17), piston cylinder (18), straight pin (10) and spring pin (19) are arranged in a gear transmission manner with the rear support (14), front housing (11), cover (101), connecting flange (102) and cover (103), and the housing (12), differential assembly (15), sun gear (16), brake pads (17), piston cylinder (18), straight pin (10) and spring pin (19) are arranged in an end support manner. Alternatively, a sun gear (16), a brake pad (17), a piston cylinder (18), multiple straight pins (10) and multiple spring pins (19) are configured to form a set of wheel and axle components, and two sets of wheel and axle components are arranged in the housing (12).

9. A method of using a rear axle gearbox assembly based on an embedded braking system, characterized in that: the steps are: The housing (12) and differential assembly (15) enable the sun gear (16) to output rotational torque. The sun gear (16) drives the gear located on the half shaft to rotate. The braking assembly brakes the rotational speed of the sun gear (16), thus keeping the differential state of the rear axle gearbox assembly under external interference.

10. The method of using the rear axle gearbox assembly based on the embedded braking system according to claim 1, characterized in that: the steps are: The drive shaft drives the drive gear (912) to rotate in the front housing (11) through the connecting flange (102). Through the meshing transmission of the drive gear (912) and the driven gear (911), the rotational torque is input to the input end of the differential assembly (15). Through the output end of the differential assembly (15), the sun gear (16) is driven to rotate, realizing the differential rotation drive of the two sun gears (16). The high-pressure liquid acts on the piston cylinder (18) through the hydraulic pipe joint of the housing (12). The piston cylinder (18) overcomes the spring part (195) and moves the piston cylinder (18) outward in the expansion hole of the housing (12). The outer end face of the piston cylinder (18) acts on the outer end face of the active friction plate part I (172), so that the active friction plate part I (172) The inner end face of the piston cylinder (172) and the inner end face of the active friction plate part II (173) act on the end face of the driven friction plate part (171), generating a braking force on the sun gear (16), so that the sun gear (16) is in a braking state. When the high pressure liquid no longer acts on the piston cylinder (18), under the elastic energy storage of the spring part (195), the piston cylinder (18) moves inward in the expansion hole of the housing (12), so that the outer end face of the piston cylinder (18) separates from the outer end face of the active friction plate part I (172), so that the inner end face of the active friction plate part I (172) and the inner end face of the active friction plate part II (173) separate from the end face of the driven friction plate part (171), so that the braking force on the sun gear (16) is no longer generated, and the sun gear (16) is in a free state.

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