Reduction gearbox, drive axle, and vehicle

Abstract

A reduction gearbox (100), a drive axle (1000), and a vehicle (5000). The reduction gearbox (100) comprises a mounting base (10), a housing (20), a planetary reduction structure (30), and a connecting shaft (40); the housing (20) is provided on the mounting base (10) and is connected to a drive wheel (4000); the mounting base (10) is configured as a planetary carrier of a second planetary reduction mechanism (33); and the first planetary reduction mechanism (31) and the second planetary reduction mechanism (33) are in transmission fit with the housing (20) and the connecting shaft (40).

Description

Reduction gearbox, drive axle and vehicle

[0001] Priority information

[0002] The present application claims priority to and the benefit of the filing date of the Chinese Patent Application No. 202411105004.6 filed on August 13, 2024 with the China National Intellectual Property Office, and which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of reduction gearbox, and more particularly, to a reduction gearbox, a drive axle and a vehicle. BACKGROUND

[0004] In the related art, a vehicle, such as a forklift, etc., is generally driven by a motor and a reduction gearbox. Generally, the reduction gearbox can be a cylindrical-conical gear reduction gearbox. However, in the case of a large-tonnage vehicle, the cylindrical-conical gear reduction gearbox is difficult to provide a reduction ratio that can meet the working requirements of the vehicle, affecting the stability and reliability of the vehicle. SUMMARY

[0005] The present application provides a reduction gearbox, a drive axle and a vehicle.

[0006] The reduction gearbox of the present application includes a mounting seat, a housing, a planetary reduction structure and a connecting shaft. The housing is arranged on the mounting seat and is used to connect with a drive wheel. The planetary reduction structure includes a first planetary reduction mechanism and a second planetary reduction mechanism, and the mounting seat is configured as a planet carrier of the second planetary reduction mechanism. The connecting shaft is rotatably arranged on the mounting seat, and the first planetary reduction mechanism is in transmission cooperation with the housing and the connecting shaft, and the second planetary reduction mechanism is in transmission cooperation with the housing and the connecting shaft.

[0007] In some embodiments, in the axial direction of the connecting shaft, the housing includes a first sub-housing and a second sub-housing; the first planetary reduction mechanism includes a first ring gear connected to the inner wall of the first sub-housing, and the second planetary reduction mechanism includes a second ring gear connected between the first sub-housing and the second sub-housing, and the first sub-housing and the second sub-housing can synchronously rotate relative to the mounting seat.

[0008] In some embodiments, the first planetary reduction mechanism further comprises a first rotating member, a first planet wheel and a first planet carrier, the first rotating member is connected with the connecting shaft and can rotate synchronously with the connecting shaft, the first planet wheel is rotatably arranged on the first planet carrier and is engaged with the first rotating member and the first ring gear, and the first ring gear is an output end of the first planetary reduction mechanism. The second planetary reduction mechanism comprises a second rotating member and a second planet wheel, the second rotating member is connected with the first planet carrier and can rotate synchronously with the first planet carrier, and the second planet wheel is rotatably arranged on the mounting seat and is engaged with the second rotating member and the second ring gear, and the second ring gear is an output end of the second planetary reduction mechanism.

[0009] In some embodiments, the first rotating member is a sun gear shaft, the second rotating member is a sun gear, and the first rotating member is sleeved on the sun gear and connected with the first planet carrier.

[0010] In some embodiments, the second sub-shell is used to be connected with the driving wheel.

[0011] In some embodiments, the mounting seat is provided with a mounting cavity, and the reduction box further comprises a brake, the brake comprises a friction plate assembly and a moving assembly. The friction plate assembly is arranged in the mounting cavity, and the friction plate assembly is matched with the connecting shaft. The moving assembly is movably arranged in the mounting cavity and can be switched between a first state and a second state. When the moving assembly is in the first state, the moving assembly presses the friction plate assembly, and the friction plate assembly limits the rotation of the connecting shaft. When the moving assembly is in the second state, the moving assembly releases the friction plate assembly, and the friction plate assembly does not limit the rotation of the connecting shaft.

[0012] In some embodiments, the moving assembly comprises a moving member and an elastic member, one end of the elastic member is connected with the moving member, and the other end is connected with the mounting seat. When the moving assembly is in the second state, the elastic member has an elastic force, and the elastic force is used for switching the moving assembly from the second state to the first state.

[0013] In some embodiments, the mounting seat is provided with a flow channel. The inner wall of the mounting cavity is provided with a fixing member, the fixing member is located between the moving member and the friction plate assembly, and the moving member and the fixing member jointly form an accommodation space, the accommodation space is communicated with the flow channel, and the flow channel is used for flowing medium out of or into the accommodation space, so as to switch the moving assembly between the first state and the second state.

[0014] In some embodiments, the circumferential side wall of the moving member is in abutment with the inner wall of the mounting cavity, and the circumferential side wall of the moving member is provided with a stepped surface, and the stepped surface and the fixed member jointly form the containing space.

[0015] The drive axle of the vehicle of the embodiments of the present application comprises the reduction gearbox of any of the above embodiments.

[0016] In some embodiments, the drive axle comprises a bogie, the bogie is rotationally connected with a frame of the vehicle, and the mounting seat is arranged on the bogie.

[0017] In some embodiments, the drive axle further comprises a driving member, the driving member and the reduction gearbox are arranged on opposite sides of the bogie respectively, an output shaft of the driving member penetrates through the bogie and is connected with the connecting shaft, and the driving member, the reduction gearbox and the driving wheel are coaxially arranged.

[0018] In some embodiments, the drive axle further comprises a line assembly and a protective cover, the line assembly is connected with the driving member and / or the reduction gearbox, and the protective cover is arranged on the bogie and covers at least part of the line assembly.

[0019] In some embodiments, the driving member comprises one.

[0020] In some embodiments, the driving member comprises at least two, and the at least two driving members are coaxially and serially arranged.

[0021] In some embodiments, the drive axle further comprises a slewing bearing, the slewing bearing comprises a first sub-portion and a second sub-portion rotationally connected with each other, one of the first sub-portion and the second sub-portion is connected with the bogie, and the other is connected with the frame.

[0022] In some embodiments, the drive axle further comprises a steering detection structure, the steering detection structure is used to detect an angle of rotation of the bogie.

[0023] In some embodiments, the steering detection structure comprises a first detection member and a second detection member, one of the first detection member and the second detection member is arranged on the first sub-portion, and the other is arranged on the second sub-portion, and the first detection member and the second detection member cooperate to detect the angle of rotation of the bogie.

[0024] The vehicle of the embodiments of the present application comprises the drive axle of any of the above embodiments.

[0025] In some embodiments, the vehicle further comprises a steering execution structure, the steering execution structure is connected with the drive axle and is used to drive the drive axle to rotate relative to the frame.

[0026] In some embodiments, the steering execution structure is a hydraulic cylinder.

[0027] In the reduction gearbox, the drive axle and the vehicle of the embodiments of the present application, the first planetary reduction mechanism is in transmission cooperation with the housing and the connecting shaft, and the second planetary reduction mechanism is in transmission cooperation with the housing and the connecting shaft. In this way, the reduction gearbox can obtain a greater reduction ratio through the first planetary reduction mechanism and the second planetary reduction mechanism. Compared with the reduction gearbox in the related art, the reduction gearbox in the embodiments of the present application can provide a reduction ratio that meets the working requirements of a large-tonnage vehicle, improves the applicability of the reduction gearbox, and ensures that the vehicle can operate stably and reliably.

[0028] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0030] Fig. 1 is a perspective structural schematic view of a vehicle according to some embodiments of the present application;

[0031] Fig. 2 is a structural schematic view of an embodiment of part of the structure of the vehicle according to Fig. 1;

[0032] Fig. 3 is a structural schematic view of another embodiment of part of the structure of the vehicle according to Fig. 1;

[0033] Fig. 4 is a perspective structural schematic view of a drive axle, a frame and a drive wheel of the vehicle according to Fig. 1;

[0034] Fig. 5 is a sectional structural schematic view of the vehicle according to Fig. 4;

[0035] Fig. 6 is an enlarged schematic view of VI in Fig. 5. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below in conjunction with the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0037] In the description of the present application, it should be understood that the terms "center", "length", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0039] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0041] Referring to FIG. 1, the vehicle 5000 of the embodiment of the present application comprises a drive axle 1000. It should be noted that in some embodiments, the vehicle 5000 includes but is not limited to a forklift, a truck, a trailer semi-trailer and a container transport vehicle, etc.

[0042] Specifically, in some embodiments, the vehicle 5000 further comprises a frame 2000 and drive wheels 4000, the drive axle 1000 is arranged on the frame 2000 and connected with the drive wheels 4000, and the drive axle 1000 can provide power to the drive wheels 4000 to rotate the drive wheels 4000 relative to the frame 2000. In some embodiments, the drive axle 1000 includes two, and the drive wheels 4000 include the left front wheel 4100 and the right front wheel 4200 of the vehicle 5000, and the number of drive axles 1000 and the number of drive wheels 4000 can be one-to-one, that is, one drive axle 1000 corresponds to one drive wheel 4000. It can be understood that in the case that the drive axle 1000 provides power to the drive wheels 4000 to rotate the drive wheels 4000 relative to the frame 2000, the vehicle 5000 can realize forward or backward movement.

[0043] Please combine FIG. 2, in some embodiments, the vehicle 5000 further comprises a steering execution structure 3000, the steering execution structure 3000 is connected with the drive axle 1000 and used to drive the drive axle 1000 to steer relative to the frame 2000.

[0044] Specifically, in some embodiments, the steering execution structure 3000 can be a hydraulic cylinder, one end of the hydraulic cylinder is arranged on the frame 2000, and the other end is arranged on the drive axle 1000. In the case that the hydraulic cylinder operates stably, the hydraulic cylinder can drive the drive axle 1000 to steer relative to the frame 2000 and drive the drive wheels 4000 to steer relative to the frame 2000. In this case, the vehicle 5000 can realize side shift or rotation. For example, please combine FIG. 3, in the case that the central axis of the drive wheels 4000 is perpendicular to the forward direction X of the vehicle 5000, the steering execution structure 3000 can drive the drive axle 1000 to steer 90° relative to the frame 2000, and drive the drive wheels 4000 to also steer 90° relative to the frame 2000. In this case, the central axis of the drive wheels 4000 is parallel to the forward direction X of the vehicle 5000, and when the drive axle 1000 provides power to the drive wheels 4000 to rotate the drive wheels 4000 relative to the frame 2000, the vehicle 5000 can realize side shift (including right shift and left shift). It can be understood that in other embodiments, the steering execution structure 3000 can also be a drive motor and the like.

[0045] It should be noted that in some embodiments, the steering execution structure 3000 includes a first hydraulic cylinder 3100 and a second hydraulic cylinder 3200, one end of the first hydraulic cylinder 3100 is arranged on the frame 2000, and the other end is arranged on the drive axle 1000. The first hydraulic cylinder 3100 is used to drive the left front wheel 4100 to steer relative to the frame 2000. One end of the second hydraulic cylinder 3200 is arranged on the frame 2000, and the other end is arranged on the drive axle 1000. The second hydraulic cylinder 3200 is used to drive the right front wheel 4200 to steer relative to the frame 2000.

[0046] In the embodiment, the vehicle 5000 comprises the drive axle 1000, and thus the vehicle 5000 at least has the beneficial effects of the drive axle 1000. The beneficial effects of the vehicle 5000 are described below in the description of the drive axle 1000.

[0047] Referring to FIGS. 1, 4 and 5, the drive axle 1000 of the embodiment comprises the reduction gearbox 100. In the embodiment, the drive axle 1000 comprises the reduction gearbox 100, and thus the drive axle 1000 at least has the beneficial effects of the reduction gearbox 100. The beneficial effects of the drive axle 1000 are described below in the description of the reduction gearbox 100.

[0048] Referring to FIGS. 5 and 6, the reduction gearbox 100 of the embodiment comprises the mounting seat 10, the housing 20, the planetary reduction structure 30 and the connecting shaft 40. The housing 20 is arranged on the mounting seat 10 and is used to connect with the drive wheel 4000. The planetary reduction structure 30 comprises the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33, and the mounting seat 10 is configured as the planet carrier of the second planetary reduction mechanism 33. The connecting shaft 40 is rotatably arranged on the mounting seat 10, the first planetary reduction mechanism 31 is in transmission cooperation with the housing 20 and the connecting shaft 40, and the second planetary reduction mechanism 33 is in transmission cooperation with the housing 20 and the connecting shaft 40.

[0049] The material of the housing 20 can be a metal material and a non-metal material. The metal material includes but is not limited to aluminum, iron, steel or aluminum alloy, etc., and the non-metal material includes but is not limited to silicon carbide, etc. For example, the housing 20 can be made of a metal material, so as to improve the structural strength of the housing 20, reduce the possibility of deformation and damage of the housing 20 during operation of the reduction gearbox 100, and improve the stability and reliability of the reduction gearbox 100.

[0050] In some embodiments, the housing 20 is provided with a connecting protrusion 17, which protrudes and extends away from the center of the housing 20 from the outer wall of the housing 20. The connecting protrusion 17 can be connected with the drive wheel 4000, so that the drive wheel 4000 can rotate synchronously with the housing 20 under the condition that the housing 20 rotates. The connecting protrusion 17 and the drive wheel 4000 can be combined together by a detachable connection mode or a non-detachable connection mode. The detachable connection mode includes but is not limited to bolt connection or buckle connection, etc., and the non-detachable connection mode includes but is not limited to welding or bonding, etc.

[0051] The first planetary reduction mechanism 31 is a structure in the reduction box 100 for realizing power transmission and reduction; correspondingly, the second planetary reduction mechanism 33 is a structure in the reduction box 100 for realizing power transmission and reduction. In some embodiments of the present application, the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33 are coaxially arranged, which can improve the stability of the operation of the planetary reduction structure 30.

[0052] The connecting shaft 40 is a structure in the reduction box 100 for connecting with an external power device (for example, the driving member 300 described below). In some embodiments of the present application, when the external power device drives the connecting shaft 40 to rotate, the connecting shaft 40 can drive the housing 20 to rotate relative to the mounting base 10 through the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33, and in this case, the housing 20 can drive the driving wheel 4000 to rotate.

[0053] In the reduction box 100 of the embodiments of the present application, the first planetary reduction mechanism 31 is in transmission cooperation with the housing 20 and the connecting shaft 40, and the second planetary reduction mechanism 33 is in transmission cooperation with the housing 20 and the connecting shaft 40, so that the reduction box 100 can obtain a larger reduction ratio through the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33. Compared with the reduction box in the related art, the reduction box 100 in the embodiments of the present application can provide a reduction ratio that meets the working requirements of a large-tonnage vehicle, improves the applicability of the reduction box 100, and ensures that the vehicle 5000 can operate stably and reliably.

[0054] In addition, when the vehicle 5000 is a large-tonnage vehicle, the bearing requirement of the driving wheel 4000 is higher, and in this case, the reduction box 100 will be subjected to greater pressure. If the mounting base 10 and the planet carrier of the second planetary reduction mechanism 33 (hereinafter referred to as the second planet carrier) are two independent structures, the structural strength between the mounting base 10 and the second planet carrier is low, and when subjected to greater pressure, the mounting base 10 and the second planet carrier are prone to breakage and other problems, which will affect the stability of the operation of the planetary reduction structure 30 and is not conducive to the normal work of the vehicle 5000. In some embodiments of the present application, the mounting base 10 is configured as the second planet carrier, that is, the mounting base 10 can be used as the second planet carrier. Compared with the case where the mounting base 10 and the second planet carrier are two independent structures, the structural strength of the mounting base 10 is higher, and when subjected to greater pressure, the mounting base 10 is not prone to breakage and other problems, which can improve the stability of the operation of the planetary reduction structure 30 and ensure the normal work of the reduction box 100 and the vehicle 5000.

[0055] The reduction box 100 will be further described below with reference to the accompanying drawings.

[0056] Please refer to FIG. 5 and FIG. 6, in some embodiments, the housing 20 comprises a first sub-housing 21 and a second sub-housing 23 in the axial direction of the connecting shaft 40. The first planetary reduction mechanism 31 comprises a first ring gear 311 connected to the inner wall of the first sub-housing 21, and the second planetary reduction mechanism 33 comprises a second ring gear 331 connected between the first sub-housing 21 and the second sub-housing 23, and the first sub-housing 21 and the second sub-housing 23 can synchronously rotate relative to the mounting base 10. Wherein, the first sub-housing 21 and the second sub-housing 23 are in a split structure, so as to facilitate the installation of the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33 in the housing 20, thereby improving the assembly efficiency of the reduction box 100.

[0057] Specifically, in some embodiments, the second ring gear 331 is connected between the first sub-housing 21 and the second sub-housing 23, thereby, compared with the second ring gear 331 being arranged in the housing 20, on the one hand, the radial dimension (perpendicular to the axial direction of the connecting shaft 40) of the housing 20 can be reduced, preventing the radial dimension of the housing 20 from being too large to connect with the driving wheel 4000, thereby ensuring the normal assembly between the reduction box 100 and the driving wheel 4000; on the other hand, the second ring gear 331 can be conveniently installed and positioned in cooperation with the second planetary gear 335 and other structures, thereby improving the assembly efficiency of the reduction box 100. It can be understood that the first ring gear 311 and the second ring gear 331 can synchronously rotate.

[0058] In some embodiments, the first ring gear 311 and the first sub-housing 21 are in an integral molding structure, that is, the first ring gear 311 and the first sub-housing 21 can be formed in an integral molding manner to form an integral whole, thereby improving the stability of the connection between the first ring gear 311 and the first sub-housing 21, preventing the first ring gear 311 from falling off from the first sub-housing 21 during the operation of the reduction box 100, and ensuring the stability and reliability of the reduction box 100. In other embodiments, the first ring gear 311 and the first sub-housing 21 are in a split structure, that is, the first ring gear 311 and the first sub-housing 21 are two separate structures. The first ring gear 311 and the first sub-housing 21 can be combined together by a detachable connection manner or a non-detachable connection manner. Wherein, the detachable connection manner includes but is not limited to bolt connection, buckle connection or bayonet connection, etc.; the non-detachable connection manner includes but is not limited to bonding or welding, etc.

[0059] The second ring gear 331 and the first sub-housing 21 can be combined together by a detachable connection mode or a non-detachable connection mode. The detachable connection mode includes, but is not limited to, bolt connection, buckle connection or pin connection, etc. The non-detachable connection mode includes, but is not limited to, bonding or welding, etc. Correspondingly, the second ring gear 331 and the second sub-housing 23 can be combined together by a detachable connection mode or a non-detachable connection mode. The detachable connection mode includes, but is not limited to, bolt connection, buckle connection or pin connection, etc. The non-detachable connection mode includes, but is not limited to, bonding or welding, etc.

[0060] Please continue to refer to FIG. 5 and FIG. 6, in some embodiments, the second sub-housing 23 is used to connect with the driving wheel 4000.

[0061] Specifically, in some embodiments, the connecting protrusion 17 is arranged on the outer wall of the second sub-housing 23, so that the force acting on the reduction box 100 is more concentrated on the second sub-housing 23, and can be transmitted to the mounting seat 10 through the second gear, avoiding the first planetary reduction mechanism 31 from being damaged by a large force, thereby ensuring the normal work of the planetary reduction mechanism 30.

[0062] In some embodiments, the first planetary reduction mechanism 31 further includes a first rotating member 313, a first planetary gear 315 and a first planet carrier 317. The first rotating member 313 is connected with the connecting shaft 40 and can rotate synchronously with the connecting shaft 40. The first planetary gear 315 is rotatably arranged on the first planet carrier 317 and is engaged with the first ring gear 311 and the first rotating member 313. The first ring gear 311 is the output end of the first planetary reduction mechanism 31. The second planetary reduction mechanism 33 includes a second rotating member 333 and a second planetary gear 335. The second rotating member 333 is connected with the first planet carrier 317 and can rotate synchronously with the first planet carrier 317. The second planetary gear 335 is rotatably arranged on the mounting seat 10 and is engaged with the second ring gear 331 and the second rotating member 333. The second ring gear 331 is the output end of the second planetary reduction mechanism 33.

[0063] Specifically, in some embodiments, when the connecting shaft 40 rotates, the connecting shaft 40 can drive the first rotating part 313 to rotate synchronously, in this case, the first planetary gear 315 can rotate around the first rotating part 313 to drive the first ring gear 311 and the first planet carrier 317 to rotate; when the first planet carrier 317 rotates, the second rotating part 333 can rotate synchronously with the first planet carrier 317, in this case, the second planetary gear 335 can rotate around the second rotating part 333 to drive the second ring gear 331 to rotate, thus, the first planetary reduction mechanism 31 can output torque to the housing 20 through the first ring gear 311, and the second planetary reduction mechanism 33 can output torque to the housing 20 through the second ring gear 331. It can be understood that the second rotating part 333 and the connecting shaft 40 rotate independently, that is, when the connecting shaft 40 rotates, the second rotating part 333 can rotate relative to the connecting shaft 40.

[0064] It can be understood that, as known from the above, when the first planet carrier 317 rotates, the second rotating part 333 can rotate synchronously with the first planet carrier 317, that is, the rotation output of the connecting shaft 40 is transmitted to the second planetary reduction mechanism 33 after being decelerated by the first planetary reduction mechanism 31, and can be output to the housing 20 through the second ring gear 331 after being decelerated by the second planetary reduction mechanism 33, thus, the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33 can jointly constitute a double-stage planetary reduction mechanism, so that a greater reduction ratio can be obtained, and the applicability of the reduction box 100 is improved.

[0065] It should be noted that, in some embodiments, the first rotating part 313 and the connecting shaft 40, and the second rotating part 333 and the first planet carrier 317 can be combined together by a detachable connection mode, so that in the case that part of the structure is damaged, the whole does not need to be replaced, thereby reducing the use cost of the reduction box 100. The detachable connection mode includes but is not limited to key connection (including spline connection or flat key connection, etc.), bolt connection and buckle connection, etc.

[0066] In other embodiments, the first rotating part 313 and the connecting shaft 40, and the second rotating part 333 and the first planet carrier 317 can be combined together by a non-detachable connection mode, so that the connection stability between the structures can be improved, and the separation between the structures during the operation of the reduction box 100 can be prevented, thereby ensuring the stability and reliability of the operation of the reduction box 100.

[0067] If the first rotating member 313 is a sun gear, and the first rotating member 313 is connected with the connecting shaft 40, in order to ensure that the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33 have sufficient arrangement space, the size of the connecting shaft 40 in the axial direction needs to be large. However, the rigidity of the connecting shaft 40 with large size is low, and the connecting shaft 40 is prone to damage during the operation of the reduction box 100, which affects the normal work of the reduction box 100. Referring to FIG. 6, in some embodiments of the present application, the first rotating member 313 is a sun gear shaft, the second rotating member 333 is a sun gear, and the first rotating member 313 is sleeved on the sun gear and connected with the first planet carrier 317. Thus, the rigidity of the connecting shaft 40 can be increased while ensuring that the first planetary reduction mechanism 31 and the second planetary reduction mechanism 33 have sufficient arrangement space, preventing the connecting shaft 40 from being damaged during the operation of the reduction box 100, and ensuring the normal work of the reduction box 100.

[0068] It should be noted that, in some embodiments, one end of the first rotating member 313 is connected with the connecting shaft 40, and the other end is rotationally connected with the housing 20. Specifically, in some embodiments, the housing 20 is provided with a bearing, and the first rotating member 313 is rotationally connected with the housing 20 through the bearing. In this way, the stability of the rotation of the first rotating member 313 can be ensured, and vibration during the rotation of the first rotating member 313 can be avoided to prevent noise and energy loss, thereby ensuring the stable operation of the reduction box 100.

[0069] Referring to FIGS. 1, 5 and 6, in some embodiments, the mounting seat 10 is provided with a mounting cavity 11. The reduction box 100 further comprises a brake 50. The brake 50 comprises a friction plate assembly 51 and a moving assembly 53. The friction plate assembly 51 is arranged in the mounting cavity 11, and the friction plate assembly 51 cooperates with the connecting shaft 40. The moving assembly 53 is movably arranged in the mounting cavity 11 and can be switched between a first state and a second state. When the moving assembly 53 is in the first state, the moving assembly 53 presses the friction plate assembly 51, and the friction plate assembly 51 restricts the rotation of the connecting shaft 40. When the moving assembly 53 is in the second state, the moving assembly 53 releases the friction plate assembly 51, and the friction plate assembly 51 does not restrict the rotation of the connecting shaft 40.

[0070] Specifically, in some embodiments, the first state can be a state of the moving assembly 53 when the moving assembly 53 exerts pressure on the friction plate assembly 51. The second state can be a state of the moving assembly 53 when the moving assembly 53 does not exert pressure on the friction plate assembly 51. When the moving assembly 53 is in the first state, the moving assembly 53 can press the friction plate assembly 51, so that the friction plate assembly 51 restricts the rotation of the connecting shaft 40, i.e., the friction plate assembly 51 hinders the rotation of the connecting shaft 40, in which case, the rotation speed of the driving wheel 4000 gradually decreases or the driving wheel 4000 stops rotating, and the vehicle 5000 is in a parking brake working condition or a service brake working condition. When the moving assembly 53 is in the second state, the moving assembly 53 can release the friction plate assembly 51, so that the friction plate assembly 51 does not restrict the rotation of the connecting shaft 40, in which case, the driving wheel 4000 can rotate normally, and the vehicle 5000 can be in a normal driving working condition.

[0071] In some embodiments, the friction plate assembly 51 includes first friction plates 511 and second friction plates 513. In the axial direction of the connecting shaft 40, the second friction plates 513 are arranged between two adjacent first friction plates 511. The second friction plates 513 are connected to the connecting shaft 40 and can rotate synchronously with the connecting shaft 40.

[0072] It should be noted that, in some embodiments, the first friction plates 511 are arranged apart from the connecting shaft 40, and the first friction plates 511 are stationary relative to the mounting seat 10. The second friction plates 513 can be connected to the connecting shaft 40 by means of key connection (including spline connection or flat key connection), bolt connection, buckle connection, etc., so that the second friction plates 513 can rotate synchronously with the connecting shaft 40. In one example, the second friction plates 513 are provided with internal splines, and the connecting shaft 40 is provided with external splines. The internal splines and the external splines are matched to enable the second friction plates 513 to rotate synchronously with the connecting shaft 40.

[0073] Specifically, in some embodiments, the first friction plates 511 and the second friction plates 513 are both multiple. The multiple first friction plates 511 are arranged apart in the axial direction of the connecting shaft 40. The multiple second friction plates 513 are arranged in the gaps between two adjacent second friction plates 513. When the moving assembly 53 is in the first state, the gap between the two adjacent second friction plates 513 is reduced, so that the first friction plates 511 and the second friction plates 513 are in contact and generate a friction force, which can restrict the rotation of the connecting shaft 40. When the moving assembly 53 is switched from the first state to the second state, the gap between the two adjacent second friction plates 513 returns to the initial state, and at this time, the first friction plates 511 and the second friction plates 513 do not generate a friction force, so that the friction plate assembly 51 does not restrict the rotation of the connecting shaft 40.

[0074] In some embodiments, the friction plate assembly 51 further comprises a mounting rod 515 arranged in the mounting cavity 11 and connected with the first friction plate 511. The mounting rod 515 is arranged to position the first friction plate 511 and to limit the movement of the first friction plate 511 when the friction plate assembly 51 is pressed, i.e., to ensure that the first friction plate 511 can only move in the moving direction of the moving assembly 53 to reduce the gap between the adjacent two second friction plates 513.

[0075] In some embodiments, the moving assembly 53 comprises a moving piece 531 and an elastic piece 533. One end of the elastic piece 533 is connected with the moving piece 531, and the other end is connected with the mounting seat 10. The elastic piece 533 has an elastic force when the moving assembly 53 is in the second state, and the elastic force is used to switch the moving assembly 53 from the second state to the first state. It should be noted that the elastic piece 533 can include, but is not limited to, a tension spring, a compression spring, or a clamping spring.

[0076] For example, when the elastic piece 533 is a compression spring, the elastic piece 533 can be in a natural state when the moving assembly 53 is in the first state, and the elastic piece 533 can be in a compressed state and generate an elastic force when the moving assembly 53 is in the second state, and the elastic force is used to switch the moving assembly 53 from the second state to the first state. Alternatively, when the elastic piece 533 is a compression spring, the elastic piece 533 can be in a first compressed state when the moving assembly 53 is in the first state, and the elastic piece 533 can be in a second compressed state and generate an elastic force when the moving assembly 53 is in the second state, and the elastic force is used to switch the moving assembly 53 from the second state to the first state. The compression amount of the elastic piece 533 in the first compressed state is less than the compression amount of the elastic piece 533 in the second compressed state.

[0077] In some embodiments, the mounting seat 10 is provided with a flow channel 13. The inner wall of the mounting cavity 11 is provided with a fixing piece 15, which is located between the moving piece 531 and the friction plate assembly 51 and forms a containing space 101 together with the moving piece 531. The containing space 101 is in communication with the flow channel 13, and the flow channel 13 is used for flowing medium out of or into the containing space 101 to switch the moving assembly 53 between the first state and the second state.

[0078] Specifically, in some embodiments, the peripheral wall of the moving piece 531 is in abutment with the inner wall of the mounting cavity 11, and the peripheral wall of the moving piece 531 is provided with a stepped surface 5313, which cooperates with the fixed piece 15 to form the accommodation space 101, i.e., the gap between the stepped surface 5313 and the fixed piece 15 forms the accommodation space 101, and the fixed piece 15 is in abutment with the peripheral wall of the moving piece 531. In the case where the medium flows into the flow channel 13 and flows into the accommodation space 101 under the guidance of the flow channel 13, the medium can generate a force on the moving piece 531 to switch the moving assembly 53 from the first state to the second state, in which case the vehicle 5000 can be in a normal driving condition; in the case where the medium flows out of the accommodation space 101 through the flow channel 13, the force generated by the medium on the moving piece 531 disappears, and the elastic force of the elastic piece 533 can switch the moving assembly 53 from the second state to the first state, in which case the vehicle 5000 is in a driving brake condition or a parking brake condition. It should be noted that, in some embodiments, the medium can be hydraulic oil or the like.

[0079] More specifically, in some embodiments, a first sealing piece is provided between the moving piece 531 and the inner wall of the mounting cavity 11, and the first sealing piece is used to seal the gap between the peripheral wall of the moving piece 531 and the inner wall of the mounting cavity 11, to prevent the medium in the accommodation space 101 from leaking out of the accommodation space 101 through the gap between the peripheral wall of the moving piece 531 and the inner wall of the mounting cavity 11, so as to ensure the stability of the operation of the brake 50. The material of the first sealing piece includes but is not limited to silicone, polyurethane, rubber, or plastic, etc.

[0080] A second sealing piece is provided between the fixed piece 15 and the inner wall of the mounting cavity 11, and the second sealing piece is used to seal the gap between the fixed piece 15 and the inner wall of the mounting cavity 11, to prevent the medium in the accommodation space 101 from leaking out of the accommodation space 101 through the gap between the fixed piece 15 and the inner wall of the mounting cavity 11, so as to ensure the stability of the operation of the brake 50. The material of the second sealing piece includes but is not limited to silicone, polyurethane, rubber, or plastic, etc.

[0081] A third sealing piece is provided between the fixed piece 15 and the peripheral wall of the moving piece 531, and the third sealing piece is used to seal the gap between the fixed piece 15 and the peripheral wall of the moving piece 531, to prevent the medium in the accommodation space 101 from leaking out of the accommodation space 101 through the gap between the fixed piece 15 and the peripheral wall of the moving piece 531, so as to ensure the stability of the operation of the brake 50. The material of the third sealing piece includes but is not limited to silicone, polyurethane, rubber, or plastic, etc.

[0082] In some embodiments, the extending direction of the flow channel 13 intersects with the axial direction of the connecting shaft 40. In one example, the extending direction of the flow channel 13 is perpendicular to the axial direction of the connecting shaft 40. In another example, the extending direction of the flow channel 13 intersects with the axial direction of the connecting shaft 40, and the included angle between the two can be any angle between (0°, 180°), such as 15°, 30°, 45°, 60°, 75°, 100°, 115°, 120°, or 135°, and the like. In this way, the flow channel 13 can improve the flow guiding effect on the medium, facilitate the flow of the medium into or out of the containing space 101, and ensure the normal operation of the brake 50.

[0083] It can be understood that, in some embodiments, when the vehicle 5000 is in a normal driving condition, the medium in the containing space 101 can maintain a pressure on the moving assembly 53, so that the moving assembly 53 is always in the second state to achieve normal driving of the vehicle 5000. When the vehicle 5000 is in a parking brake condition, there is no medium in the containing space 101, or the medium in the containing space 101 has a force on the moving assembly 53 smaller than the elastic force of the elastic member 533, so that the moving assembly 53 can be in the first state to achieve parking brake. When the vehicle 5000 is in a service brake condition, the pressure of the medium in the containing space 101 on the moving assembly 53 decreases, so that the moving assembly 53 switches from the second state to the first state to achieve service brake.

[0084] Referring to FIGS. 1 and 4, in some embodiments, the drive axle 1000 includes a bogie 200, the bogie 200 is rotationally connected with a vehicle frame 2000 of the vehicle 5000, and the mounting seat 10 is arranged on the bogie 200. Specifically, in some embodiments, the mounting seat 10 and the bogie 200 can be combined together by a detachable connection mode or a non-detachable connection mode. The detachable connection mode includes but is not limited to bolt connection or buckle connection, and the non-detachable connection mode includes but is not limited to welding or bonding.

[0085] In some embodiments, the bogie 200 is provided with a steering hinge seat 210, and the steering execution structure 3000 is connected with the steering hinge seat 210. When the steering execution structure 3000 is stably operated, the steering execution structure 3000 can apply a force to the drive axle 1000 through the steering hinge seat 210 to drive the drive axle 1000 to steer relative to the vehicle frame 2000.

[0086] In some embodiments, the drive axle 100 further comprises a driving member 300, the driving member 300 and the reduction box 100 are arranged at opposite sides of the bogie 200 respectively, an output shaft of the driving member 300 penetrates the bogie 200 and is connected with the connecting shaft 40, the driving member 300, the reduction box 100 and the drive wheel 4000 are coaxially arranged. It should be noted that, in some embodiments, the driving member 300 can be a disc type driving motor, thus the length of the driving member 300 is smaller, so as to reduce the influence of the length of the driving member 300 on the turning radius of the drive axle 100.

[0087] Specifically, in some embodiments, the driving member 300 and the reduction box 100 are arranged at opposite sides of the bogie 200 respectively, thus, compared with the case that the driving member 300 and the reduction box 100 are arranged at the same side of the bogie 200, the gravity center of the driving member 300, the reduction box 100 and the bogie 200 is more centralized, i.e., the gravity center of the driving member 300, the reduction box 100 and the bogie 200 is closer to the bogie 200, so as to ensure the stability of the installation of the driving member 300 and the reduction box 100 on the bogie 200, and ensure the normal work of the drive axle 100. In addition, the driving member 300, the reduction box 100 and the drive wheel 4000 are coaxially arranged, i.e., the central axis of the driving member 300, the central axis of the reduction box 100 and the central axis of the drive wheel 4000 coincide, thus, compared with the case that the central axis direction of the driving member 300 intersects with the central axis direction of the drive wheel 4000 (for example, perpendicular to each other), the drive axle 100 occupies a smaller space, so as to facilitate the arrangement of the drive axle 100 in the vehicle 5000, and reduce the difficulty of the overall vehicle arrangement.

[0088] In some embodiments, the driving member 300 comprises one. In other embodiments, the driving member 300 comprises at least two, the at least two driving members 300 are coaxially arranged in series. Thus, the drive axle 100 can generate greater driving force on the drive wheel 4000, so as to improve the applicability of the drive axle 100.

[0089] Please refer to FIG. 1, FIG. 4 and FIG. 5, in some embodiments, the drive axle 100 further comprises a slewing bearing 600, the slewing bearing 600 comprises a first sub-portion 610 and a second sub-portion 630 which are rotatably connected, one of the first sub-portion 610 and the second sub-portion 630 is connected with the bogie 200, and the other is connected with the vehicle frame 2000.

[0090] The slewing bearing 600 is a bearing capable of bearing large axial, radial load and overturning moment. One of the first sub-portion 610 and the second sub-portion 630 is an outer ring of the bearing, and the other is an inner ring of the bearing. In the embodiments of the present application, the first sub-portion 610 is taken as an example of the outer ring of the bearing, and the second sub-portion 630 is taken as an example of the inner ring of the bearing. The first sub-portion 610 is connected to the vehicle frame 2000, and the second sub-portion 630 is connected to the bogie 200.

[0091] Specifically, in some embodiments, the first sub-portion 610 is connected to the vehicle frame 2000, and the second sub-portion 630 is connected to the bogie 200. In the case that the steering execution structure 3000 exerts a force on the bogie 200, the second sub-portion 630 can rotate relative to the first sub-portion 610, so as to make the drive axle 1000 turn relative to the vehicle frame 2000.

[0092] Please refer to FIG. 5. In some embodiments, the drive axle 1000 further comprises a steering detection structure 700 for detecting the angle of rotation of the bogie 200.

[0093] Specifically, in some embodiments, the vehicle 5000 can further comprise a controller capable of controlling the operation of the steering execution structure 3000 to make the bogie 200 rotate relative to the vehicle frame 2000 to a target rotation angle. Wherein, after the steering detection structure 700 detects the angle of rotation of the bogie 200 (actual rotation angle), the controller can obtain the actual rotation angle detected by the steering detection structure 700, and adjust the target rotation angle according to the actual rotation angle and the target rotation angle. For example, in the case that the actual rotation angle and the target rotation angle are the same, the target rotation angle remains unchanged; in the case that the actual rotation angle and the target rotation angle are different, the controller can adjust the target rotation angle according to the difference between the actual rotation angle and the target rotation angle, and control the operation of the steering execution structure 3000 to make the bogie 200 rotate relative to the vehicle frame 2000 to the adjusted target rotation angle.

[0094] In some embodiments, the steering detection structure 700 comprises a first detection member 710 and a second detection member 730, one of the first detection member 710 and the second detection member 730 is arranged on the first sub-portion 610, and the other is arranged on the second sub-portion 630. The first detection member 710 and the second detection member 730 cooperate to detect the angle of rotation of the bogie 200. In the embodiments of the present application, the first detection member 710 is taken as an example of being arranged on the first sub-portion 610, and the second detection member 730 is taken as an example of being arranged on the second sub-portion 630.

[0095] Specifically, in some embodiments, the first detection member 710 can be an angle sensor, and the second detection member 730 can be a rotating cylinder, which is arranged on the second sub-portion 630 and can rotate synchronously with the second sub-portion 630. In this way, the angle sensor can detect the angle of rotation of the bogie 200 through the rotating cylinder.

[0096] More specifically, in some embodiments, the first detection member 710 is arranged on the first sub-portion 610 through a first mounting plate, the second detection member 730 is arranged on the second sub-portion 630 through a second mounting plate, and the center of the first detection member 710 and the center of the second detection member 730 are both coincident with the central axis of the slewing bearing 600. In this way, compared with the case where the center of the steering detection structure 700 is not coincident with the center of the slewing bearing 600, the steering detection structure 700 in this embodiment has less influence on the slewing radius of the drive axle 1000, thereby improving the stability of the drive axle 1000.

[0097] In some embodiments, the drive axle 1000 further comprises a line assembly 400 and a protective cover 500. The line assembly 400 is connected with the driving member 300 and / or the reduction box 100, and the protective cover 500 is arranged on the bogie 200 and covers at least part of the line assembly 400.

[0098] Specifically, in some embodiments, the line assembly 400 includes but is not limited to a power line, a first pipeline, a second pipeline, and the like. The power line is used to deliver electric energy to the driving member 300 for driving the driving member 300 to operate. The first pipeline is used to deliver a cooling medium for cooling the driving member 300. The second pipeline is used to deliver a medium for the operation of the brake 50. The arrangement of the protective cover 500 can reduce the possibility of collision or friction damage between the line assembly 400 and external structures, thereby prolonging the service life of the line assembly 400 and ensuring the stability and reliability of the operation of the drive axle 1000. It should be noted that, in some embodiments, the cooling medium includes but is not limited to water, a coolant, or a cooling gas, and the like. The coolant includes but is not limited to ethylene glycol, propylene glycol, fluorinated liquid, or synthetic oil, and the like. The cooling gas includes but is not limited to ammonia or hydrogen, and the like.

[0099] In some embodiments, the protective cover 500 and the bogie 200 can be combined together in a detachable connection manner or a non-detachable connection manner. The detachable connection manner includes but is not limited to bolt connection or buckle connection, and the like. The non-detachable connection manner includes but is not limited to welding or bonding, and the like.

[0100] Any technical features in the above-described embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations are described, however, as long as there is no conflict in combining the technical features, it should be considered that the combination of the technical features is within the scope of the present disclosure. Meanwhile, other embodiments can be derived from the above-described embodiments, so that structural and logical substitutions and changes can be made without departing from the scope of the present disclosure.

[0101] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these are within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A reduction gearbox (100), wherein, The application relates to a reduction box (100) comprising: a mounting base (10); a housing (20) arranged on the mounting base (10) and used for connecting with a driving wheel (4000), wherein the housing (20) comprises a first sub-housing (21) and a second sub-housing (23) in the axial direction of a connecting shaft (40); a planetary reduction structure (30) comprising a first planetary reduction mechanism (31) and a second planetary reduction mechanism (33), wherein the mounting base (10) is configured as a planet carrier of the second planetary reduction mechanism (33), the first planetary reduction mechanism (31) comprises a first ring gear (311) connected to the inner wall of the first sub-housing (21), the second planetary reduction mechanism (33) comprises a second ring gear (331) connected between the first sub-housing (21) and the second sub-housing (23), and the first sub-housing (21) and the second sub-housing (23) can synchronously rotate relative to the mounting base (10); and the connecting shaft (40) is rotatably arranged on the mounting base (10), the first planetary reduction mechanism (31) is in transmission cooperation with the housing (20) and the connecting shaft (40), and the second planetary reduction mechanism (33) is in transmission cooperation with the housing (20) and the connecting shaft (40).

2. The reduction box (100) according to claim 1, wherein the first planetary reduction mechanism (31) further comprises a first rotating member (313), a first planetary gear (315) and a first planet carrier (317), the first rotating member (313) is connected with the connecting shaft (40) and can synchronously rotate with the connecting shaft (40), the first planetary gear (315) is rotatably arranged on the first planet carrier (317) and is in mesh with the first ring gear (311) and the first rotating member (313), and the first ring gear (311) is an output end of the first planetary reduction mechanism (31); the second planetary reduction mechanism (33) comprises a second rotating member (333) and a second planetary gear (335), the second rotating member (333) is connected with the first planet carrier (317) and can synchronously rotate with the first planet carrier (317), the second planetary gear (335) is rotatably arranged on the mounting base (10) and is in mesh with the second ring gear (331) and the second rotating member (333), and the second ring gear (331) is an output end of the second planetary reduction mechanism (33).

3. The reduction gearbox (100) of claim 2, wherein, The first rotating member (313) is a sun gear shaft, the second rotating member (333) is a sun gear, and the first rotating member (313) is sleeved on the sun gear and connected with the first planet carrier (317).

4. The reduction gearbox (100) according to any one of claims 1-3, wherein, The second sub-housing (23) is used for connecting with the driving wheel (4000).

5. The reduction gearbox (100) according to any one of claims 1-4, wherein, The mounting base (10) is provided with a mounting cavity (11), and the reduction box (100) further comprises a brake (50), wherein the brake (50) comprises: A friction plate assembly (51) is arranged in the mounting cavity (11) and cooperates with the connecting shaft (40); and A moving assembly (53) is movably arranged in the mounting cavity (11) and can be switched between a first state and a second state, in the first state, the moving assembly (53) presses the friction plate assembly (51), and the friction plate assembly (51) limits the rotation of the connecting shaft (40); in the second state, the moving assembly (53) releases the friction plate assembly (51), and the friction plate assembly (51) does not limit the rotation of the connecting shaft (40).

6. The reduction gearbox (100) of claim 5, wherein, The moving assembly (53) comprises: a moving piece (531); and a resilient piece (533) having one end connected with the moving piece (531) and the other end connected with the mounting base (10), in the second state, the resilient piece (533) has an elastic force for switching the moving assembly (53) from the second state to the first state.

7. The reduction gearbox (100) of claim 6, wherein, The mounting base (10) is provided with a flow channel (13); the inner wall of the mounting cavity (11) is provided with a fixing piece (15) located between the moving piece (531) and the friction plate assembly (51) and forming a containing space (101) together with the moving piece (531), the containing space (101) communicates with the flow channel (13), and the flow channel (13) is used for flowing medium out of or into the containing space (101) to switch the moving assembly (53) between the first state and the second state.

8. The reduction gearbox (100) of claim 7, wherein, The circumferential wall of the moving piece (531) abuts against the inner wall of the mounting cavity (11), and the circumferential wall of the moving piece (531) is provided with a stepped surface (5313) forming the containing space (101) together with the fixing piece (15).

9. A drive axle (1000) of a vehicle (5000), wherein The application further provides a drive axle (1000) comprising the speed reducer (100). The drive axle (1000) comprises:

10. The drive axle (1000) of claim 9, wherein, a bogie (200) rotationally connected with a frame (2000) of the vehicle (5000), and the mounting base (10) is arranged on the bogie (200). The drive axle (1000) further comprises:

11. The drive axle (1000) of claim 10, wherein, a driving member (300) and the speed reducer (100) are arranged on opposite sides of the bogie (200) respectively, an output shaft of the driving member (300) penetrates the bogie (200) and is connected with the connecting shaft (40), and the driving member (300), the speed reducer (100) and the driving wheel (4000) are coaxially arranged. ​ 12. The drive axle (1000) of claim 11, wherein, The drive axle (1000) further comprises a line assembly (400) and a protective cover (500), the line assembly (400) is connected with at least one of the driving member (300) and the reduction box (100), and the protective cover (500) is arranged on the bogie (200) and covers at least part of the line assembly (400).

13. The drive axle (1000) according to claim 11, wherein, The driving member (300) comprises one; or The driving member (300) comprises at least two, and the at least two driving members (300) are coaxially and serially arranged.

14. The drive axle (1000) of claim 10, wherein, The drive axle (1000) further comprises: A slewing bearing (600), the slewing bearing (600) comprises a first sub-portion (610) and a second sub-portion (630) in rotational connection, one of the first sub-portion (610) and the second sub-portion (630) is connected with the bogie (200), and the other is connected with the vehicle frame (2000).

15. The drive axle (1000) of claim 14, wherein, The drive axle (1000) further comprises: A steering detection structure (700) for detecting the angle of rotation of the bogie (200).

16. The drive axle (1000) of claim 15, wherein, The steering detection structure (700) comprises a first detection member (710) and a second detection member (730), one of the first detection member (710) and the second detection member (730) is arranged on the first sub-portion (610), and the other is arranged on the second sub-portion (630), and the first detection member (710) and the second detection member (730) cooperate to detect the angle of rotation of the bogie (200).

17. A vehicle (5000), wherein Comprise: The drive axle (1000) according to any one of claims 9-16.

18. The vehicle (5000) of claim 17, wherein, The vehicle (5000) further comprises: A steering execution structure (3000) connected with the drive axle (1000) and used for driving the drive axle (1000) to steer relative to the vehicle frame (2000).

19. The vehicle (5000) of claim 18, wherein, The steering execution structure (3000) is a hydraulic cylinder.

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