Axle housing assembly, drive axle assembly and vehicle

Abstract

The utility model discloses an axle housing assembly, drive axle assembly and vehicle, axle housing assembly includes: side axle housing and middle axle housing, the side axle housing is located in middle axle housing opposite two sides and is connected with middle axle housing, middle axle housing and side axle housing together form the accommodation cavity, the accommodation cavity is used for accommodating motor assembly and the first speed reducer assembly that is connected with motor assembly. The accommodating cavity is formed between the side axle housing and the middle axle housing, and the motor assembly and the first speed reducer assembly can be arranged in the accommodating cavity, so that the motor assembly and the first speed reducer assembly can be prevented from bearing loads of the vehicle under different working conditions, and the loads of the vehicle under the different working conditions are both borne by the side axle housing and the middle axle housing; the side axle housing and the middle axle housing form a force transmission channel, so that gears and bearings of the motor assembly and the first speed reducer assembly can be prevented from being damaged, the performance of the motor assembly and the first speed reducer assembly can be improved, the service life of the motor assembly and the first speed reducer assembly can be prolonged, the safety of a vehicle can be guaranteed, and the maximum load borne by the vehicle can be increased.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to an axle housing assembly, a drive axle assembly, and a vehicle. Background Technology

[0002] Currently, both the motor assembly and the reducer assembly bear loads under various operating conditions from the axle housing assembly. This can cause stress on the gears and bearings in the motor assembly and reducer assembly, leading to damage to the gears and bearings. Consequently, it affects the performance and lifespan of the motor assembly and reducer assembly, as well as the safety of the vehicle, and also reduces the overall load borne by the vehicle. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide an axle housing assembly that can prevent the motor assembly and the first reducer assembly from bearing loads, thereby preventing damage to gears and bearings, and thus improving vehicle safety and the load borne by the vehicle.

[0004] This utility model further proposes a drive axle assembly.

[0005] This utility model further proposes a vehicle.

[0006] The axle housing assembly according to this utility model includes: a side axle housing and a middle axle housing, the side axle housings being located on opposite sides of the middle axle housing and connected to the middle axle housing, the middle axle housing and the side axle housings together forming a receiving cavity, the receiving cavity being used to receive a motor assembly and a first reducer assembly connected to the motor assembly.

[0007] According to the axle housing assembly of this utility model, by forming a receiving cavity between the side axle housing and the middle axle housing, the motor assembly and the first reducer assembly can be housed in the receiving cavity. This arrangement can prevent the motor assembly and the first reducer assembly from bearing the load of the vehicle under different operating conditions. The load of the vehicle under different operating conditions is borne by the side axle housing and the middle axle housing together. The side axle housing and the middle axle housing form a force transmission channel, thereby preventing damage to the gears and bearings of the motor assembly and the first reducer assembly. It can also improve the performance and life of the motor assembly and the first reducer assembly, thereby ensuring the safety of the vehicle and increasing the maximum load that the vehicle can withstand.

[0008] In some examples of this utility model, a first cavity is formed inside the middle axle housing for accommodating the motor assembly, and a second cavity is formed at one end of the side axle housing adjacent to the middle axle housing, recessed toward the other end therein. The first cavity and the second cavity communicate with each other, and the first cavity and the second cavity together form at least a portion of the receiving cavity. The second cavity is used to accommodate at least a portion of the first reducer assembly.

[0009] In some examples of this utility model, the side bridge housing includes: a first housing portion and a second housing portion, a first half-shaft channel is formed in the first bridge housing, the second housing portion is connected to one end of the first housing portion adjacent to the middle bridge housing, the second housing portion is connected to the middle bridge housing and forms a second cavity, and the second cavity communicates with the first half-shaft channel.

[0010] In some examples of this invention, the cross-sectional area of ​​the first half-shaft channel is smaller than the cross-sectional area of ​​the second cavity, and the cross-sectional area of ​​the second cavity is smaller than the cross-sectional area of ​​the first cavity.

[0011] In some examples of this utility model, the middle bridge housing includes at least two connecting plates, which are connected between the side bridge housings on both sides, and the at least two connecting plates are spaced apart in the circumferential direction of the middle bridge housing.

[0012] In some examples of this utility model, the inner circumferential surface of the connecting plate is an arc-shaped surface.

[0013] In some examples of this invention, at least two of the connecting plates have their inner circumferential surfaces located within the same annular surface.

[0014] In some examples of this utility model, a first mounting hole is formed at one end of the side bridge housing adjacent to the connecting plate, and a second mounting hole is provided at the end of the connecting plate. The first mounting hole and the second mounting hole are arranged opposite to each other and connected by a first fastener.

[0015] In some examples of this utility model, there are two connecting plates, which are arranged opposite each other in the vertical direction.

[0016] In some examples of this utility model, the axle housing assembly further includes: a half-shaft sleeve and a brake mounting plate. The half-shaft sleeve is disposed at the end of the side axle housing away from the middle axle housing. A first half-shaft channel is formed in the side axle housing, and a second half-shaft channel is formed in the half-shaft sleeve. The first half-shaft channel communicates with the second half-shaft channel. The brake mounting plate is disposed on the side axle housing and is used to mount a brake.

[0017] In some examples of this utility model, the side axle housing, the middle axle housing, and the brake mounting plate are all castings, and the half-shaft sleeve is a forging.

[0018] The drive axle assembly according to this utility model includes: the axle housing assembly, the motor assembly, and the first reducer assembly as described above, wherein the motor assembly is connected to the first reducer assembly, and the motor assembly and the first reducer assembly are disposed within the receiving cavity.

[0019] In some examples of this utility model, there are two first reducer assemblies and two motor assemblies. Both the two motor assemblies and the two first reducer assemblies are disposed in the receiving cavity. The two motor assemblies are arranged axially in the motor assembly, and the two first reducer assemblies are respectively located on the side of the corresponding motor assembly away from each other.

[0020] In some examples of this utility model, a third mounting hole is formed at one end of the side bridge housing adjacent to the middle bridge housing, and a fourth mounting hole is provided at the end of the motor assembly. The third mounting hole and the fourth mounting hole are arranged opposite to each other and connected by a second fastener.

[0021] In some examples of this utility model, the first reducer assembly includes: a first sun gear, a first planet gear, a first ring gear, and a first planet carrier. The first planet gear is disposed on the first planet carrier and meshes with the first sun gear and the first ring gear respectively. Among them, one of the first sun gear, the first planet carrier, and the first ring gear is a first input end and the other is a first output end. The first input end is connected to the motor assembly, and the first output end is used to output power.

[0022] In some examples of this utility model, the drive axle assembly further includes: a half shaft and a second reducer assembly, the half shaft passing through the side axle housing, the half shaft being connected between the first reducer assembly and the second reducer assembly, the second reducer assembly being used to connect with the wheel.

[0023] In some examples of this utility model, the second reducer assembly includes: a second sun gear, a second planet gear, a second ring gear, and a second planet carrier. The second planet gear is disposed on the second planet carrier and meshes with the second sun gear and the second ring gear respectively. Among them, one of the second sun gear, the second planet carrier, and the second ring gear is a second input end and the other is a second output end. The second input end is connected to the half shaft, and the second output end is used to connect to the wheel.

[0024] In some examples of this utility model, the second reducer assembly includes: a reducer housing, a second sun gear, a second planet gear, a second planet carrier, and a second ring gear disposed within the reducer housing, the second input end being the second sun gear, the second output end being the second planet carrier, and the second ring gear being connected to the reducer housing.

[0025] The vehicle according to this utility model includes: the drive axle assembly described above.

[0026] Compared with the prior art, this utility model adopts a method in which the side axle housing and the middle axle housing jointly form a receiving cavity, and the motor assembly and the first reducer assembly can be housed in the receiving cavity. This arrangement can avoid the motor assembly and the first reducer assembly bearing the load of the vehicle under different operating conditions. The load of the vehicle under different operating conditions is borne by the side axle housing and the middle axle housing together. The side axle housing and the middle axle housing form a force transmission channel, thereby avoiding damage to the gears and bearings of the motor assembly and the first reducer assembly, and improving the performance and life of the motor assembly and the first reducer assembly. In this way, the safety of the vehicle can be guaranteed, and the maximum load that the vehicle can withstand can be increased.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a structural schematic diagram of the bridge housing assembly according to an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the drive axle assembly according to an embodiment of the present utility model;

[0031] Figure 3 This is a cross-sectional view of the drive axle assembly according to an embodiment of the present utility model;

[0032] Figure 4 This is an exploded view of the drive axle assembly according to an embodiment of the present utility model.

[0033] Figure label:

[0034] 1000. Drive axle assembly;

[0035] 100. Bridge housing assembly;

[0036] 110. Side bridge housing; 111. First housing section; 112. Second housing section; 113. First mounting hole; 114. Third mounting hole;

[0037] 120. Middle bridge housing; 121. Connecting plate; 122. Second mounting hole;

[0038] 130. Receiving cavity; 131. First cavity; 132. Second cavity;

[0039] 140. Half-shaft sleeve; 150. Brake mounting plate;

[0040] 200. Motor assembly; 210. Fourth mounting hole;

[0041] 300. First reducer assembly; 310. First sun gear; 320. First planet gear; 330. First ring gear; 340. First planet carrier;

[0042] 400, Half shaft; 500, Second reducer assembly; 510, Second sun gear; 520, Second planet gear; 530, Second ring gear; 540, Second planet carrier; 550, Reducer housing. Detailed Implementation

[0043] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0044] The following is for reference. Figures 1-4 This invention describes an axle housing assembly 100 according to an embodiment of the present invention, which is used in a vehicle, such as a heavy-duty vehicle.

[0045] like Figures 1-4 As shown, the bridge housing assembly 100 according to the present invention includes: a side bridge housing 110 and a middle bridge housing 120. The side bridge housing 110 is located on opposite sides of the middle bridge housing 120 and is connected to the middle bridge housing 120. The middle bridge housing 120 and the side bridge housing 110 together form a receiving cavity 130. The receiving cavity 130 is used to receive the motor assembly 200 and the first reducer assembly 300 connected to the motor assembly 200.

[0046] It is understandable that the side axle housing 110 and the middle axle housing 120 constitute the main structure of the axle housing assembly 100. The side axle housing 110 is located on the left and right sides of the middle axle housing 120, and the side axle housing 110 and the middle axle housing 120 are tightly connected, so that the side axle housing 110 and the middle axle housing 120 can form a whole, thereby improving the overall structural strength of the side axle housing 110 and the middle axle housing 120.

[0047] A receiving cavity 130 is formed between the middle axle housing 120 and the side axle housing 110. The receiving cavity 130 can accommodate the motor assembly 200 and the first reducer assembly 300. This arrangement can prevent the motor assembly 200 and the first reducer assembly 300 from bearing the load of the vehicle under different operating conditions. The load of the vehicle under different operating conditions is borne by the side axle housing 110 and the middle axle housing 120 together. This can prevent damage to the gears and bearings of the motor assembly 200 and the first reducer assembly 300, and can also improve the performance and life of the motor assembly 200 and the first reducer assembly 300, thereby ensuring the safety of the vehicle and increasing the maximum load that the vehicle can withstand. Moreover, the motor assembly 200 and the first reducer assembly 300 are connected by a drive, so that the power of the motor assembly 200 can be transmitted to the first reducer assembly 300, thereby realizing the deceleration and differential functions of the vehicle.

[0048] Therefore, by forming a receiving cavity 130 between the side axle housing 110 and the middle axle housing 120, the motor assembly 200 and the first reducer assembly 300 can be disposed in the receiving cavity 130. This arrangement can prevent the motor assembly 200 and the first reducer assembly 300 from bearing the load of the vehicle under different operating conditions. The load of the vehicle under different operating conditions is borne by the side axle housing 110 and the middle axle housing 120 together, thereby preventing damage to the gears and bearings of the motor assembly 200 and the first reducer assembly 300. It can also improve the performance and life of the motor assembly 200 and the first reducer assembly 300, thereby ensuring the safety of the vehicle and increasing the maximum load that the vehicle can withstand.

[0049] Among them, such as Figure 3 As shown, a first cavity 131 is formed inside the middle bridge housing 120, which is used to accommodate the motor assembly 200. A second cavity 132 is formed at one end of the side bridge housing 110 adjacent to the middle bridge housing 120 and recessed toward the other end thereto. The first cavity 131 and the second cavity 132 are in communication. The first cavity 131 and the second cavity 132 together form at least a part of the receiving cavity 130. The second cavity 132 is used to accommodate at least a part of the first reducer assembly 300.

[0050] It is understandable that a first cavity 131 is formed between the middle axle housings 120, and the motor assembly 200 is disposed in the first cavity 131. This not only allows the middle axle housings 120 to protect the motor assembly 200 and extend its service life, but also allows the middle axle housings 120 to bear the load of the vehicle under different operating conditions. This can prevent damage to the gears and bearings in the motor assembly 200 and ensure the performance of the motor assembly 200. The side axle housings 110 are located on the left and right sides of the middle axle housings 120. The recess formed on the side axle housings 110 near one end of the side axle housing 110 is a second cavity 132. The first cavity 131 and the second cavity 132 are connected. This arrangement facilitates the motor assembly 200. The first reducer assembly 300 is connected to the first reducer assembly 300 in a transmission manner. The first cavity 131 and the second cavity 132 together form at least a part of the receiving cavity 130, thereby ensuring the volume of the receiving cavity 130 and ensuring that different loads are borne by the side axle housing 110 and the middle axle housing 120. A part of the first reducer assembly 300 is located in the second cavity 132. This not only allows the side axle housing 110 to protect the first reducer assembly 300 and extend the service life of the first reducer assembly, but also allows the side axle housing 110 to bear the load of the vehicle under different working conditions. This can prevent damage to the gears and bearings in the first reducer assembly 300 and ensure the performance of the first reducer assembly 300.

[0051] In addition, such as Figures 1-4 As shown, the side bridge housing 110 includes: a first housing portion 111 and a second housing portion 112. A first half-shaft 400 channel is formed in the first bridge housing. The second housing portion 112 is connected to one end of the first housing portion 111 adjacent to the middle bridge housing 120. The second housing portion 112 is connected to the middle bridge housing 120 and forms a second cavity 132. The second cavity 132 communicates with the first half-shaft 400 channel.

[0052] In other words, the first housing portion 111 and the second housing portion 112 constitute the main structure of the side axle housing 110. A first half-shaft 400 channel is formed in the middle of the first axle housing, which can accommodate the first half-shaft 400. The second cavity 132 is connected to the first half-shaft 400 channel, thereby enabling the first half-shaft 400 to connect the transmission between the first reducer assembly 300 and other components. The second housing portion 112 is connected to the first housing portion 111, so that the first housing portion 111, the second housing portion 112, and the middle axle housing 120 can be connected sequentially. This ensures the volume of the receiving cavity 130. A second cavity 132 is formed between the second housing 112 and the middle axle housing 120. A part of the first reducer assembly 300 is located in the second cavity 132. This not only allows the side axle housing 110 to protect the first reducer assembly 300 and extend its service life, but also allows the side axle housing 110 to bear the load of the vehicle under different operating conditions. This can prevent damage to the gears and bearings in the first reducer assembly 300 and ensure the performance of the first reducer assembly 300.

[0053] In particular, such as Figure 3 As shown, the cross-sectional area of ​​the first half-shaft 400 channel is smaller than the cross-sectional area of ​​the second cavity 132, and the cross-sectional area of ​​the second cavity 132 is smaller than the cross-sectional area of ​​the first cavity 131.

[0054] Understandably, the cross-sectional area of ​​the first half-shaft 400 channel is smaller than that of the second cavity 132. This allows the first half-shaft 400 to rotate fully within the first half-shaft 400 channel while also restricting its rotational space, thereby maximizing the transmission of power from the first reducer assembly 300. The cross-sectional area of ​​the second cavity 132 is smaller than that of the first cavity 131, allowing the motor assembly 200 to be positioned within the first cavity 131. The output end of the first reducer assembly 300 is connected to the first half-shaft 400, ensuring that the power of the motor assembly 200 is transmitted to the first half-shaft 400 through the first reducer assembly 300.

[0055] In addition, such as Figures 1-4 As shown, the middle axle housing 120 includes at least two connecting plates 121, which are connected between the two side axle housings 110, and the at least two connecting plates 121 are spaced apart in the circumferential direction of the middle axle housing 120.

[0056] In other words, the upper and lower connecting plates 121 constitute the middle bridge housing 120. The upper connecting plate 121 is connected to the upper ends of the left and right side bridge housings 110, and the lower connecting plate 121 is connected to the lower ends of the left and right side bridge housings 110. This allows the upper and lower connecting plates 121 to be spaced apart in the circumferential direction of the middle bridge housing 120, and also allows the two connecting plates 121 to be arranged opposite each other in the vertical direction. This allows a receiving cavity 130 to be formed between the connecting plates 121 and the side bridge housings 110, which can accommodate the motor assembly. The arrangement of the motor assembly 200 and the first reducer assembly 300 avoids the motor assembly 200 and the first reducer assembly 300 bearing the load of the vehicle under different operating conditions. The load of the vehicle under different operating conditions is borne by the side axle housing 110 and the middle axle housing 120. This can prevent damage to the gears and bearings of the motor assembly 200 and the first reducer assembly 300, and can also improve the performance and life of the motor assembly 200 and the first reducer assembly 300, thereby ensuring the safety of the vehicle and increasing the maximum load that the vehicle can withstand.

[0057] In particular, such as Figure 3 As shown, the inner circumferential surface of the connecting plate 121 is an arc-shaped surface, and the inner circumferential surfaces of at least two connecting plates 121 are located within the same annular surface. This maximizes the volume of the receiving cavity 130, facilitating the placement of the motor assembly 200 and the first reducer assembly 300 within the receiving cavity 130. It also prevents the motor assembly 200 and the first reducer assembly 300 from bearing the loads of the vehicle under different operating conditions. The loads of the vehicle under different operating conditions are borne jointly by the side axle housing 110 and the middle axle housing 120, thereby preventing damage to the gears and bearings of the motor assembly 200 and the first reducer assembly 300. It also improves the performance and lifespan of the motor assembly 200 and the first reducer assembly 300, thus ensuring vehicle safety and increasing the maximum load that the vehicle can withstand.

[0058] In addition, such as Figure 4 As shown, a first mounting hole 113 is formed at one end of the adjacent connecting plate 121 of the side bridge housing 110, and a second mounting hole 122 is provided at the end of the connecting plate 121. The first mounting hole 113 and the second mounting hole 122 are arranged opposite to each other and connected by a first fastener.

[0059] It is understandable that a first mounting hole 113 is provided at one end of the side axle housing 110 near the connecting plate 121, and a second mounting hole 122 is provided at the end of the connecting plate 121 near the side axle housing 110. The first mounting hole 113 and the second mounting hole 122 are arranged opposite to each other, so that the side axle housing 110 and the connecting plate 121 can be installed in a limited position through the first mounting hole 113 and the second mounting hole 122. Moreover, the first fastener passes through the first mounting hole 113 and the second mounting hole 122, so that the side axle housing 110 and the connecting plate 121 can form a whole. This allows the load of the vehicle under different working conditions to be borne by the side axle housing 110 and the connecting plate 121, thereby avoiding damage to the gears and bearings of the motor assembly 200 and the first reducer assembly 300.

[0060] In addition, such as Figure 1 As shown, the axle housing assembly 100 also includes: a half-shaft sleeve 140 and a brake mounting plate 150. The half-shaft sleeve 140 is disposed at the end of the side axle housing 110 away from the middle axle housing 120. A first half-shaft 400 channel is formed in the side axle housing 110, and a second half-shaft 400 channel is formed in the half-shaft sleeve 140. The first half-shaft 400 channel communicates with the second half-shaft 400 channel. The brake mounting plate 150 is disposed on the side axle housing 110 and is used to mount the brake.

[0061] In other words, the half-shaft sleeve 140 is located at the end of the side axle housing 110 away from the middle axle housing 120, so that the half-shaft sleeve 140 can connect to other components. A first half-shaft 400 channel is formed inside the side axle housing 110, so that the first half-shaft 400 can rotate within the first half-shaft 400 channel. A second half-shaft 400 channel is formed inside the half-shaft sleeve 140. The first half-shaft 400 channel and the second half-shaft 400 channel are connected, so that the power of the first reducer assembly 300 can be transmitted to the second half-shaft 400 through the first half-shaft 400. The second half-shaft 400 connects to other components. The brake mounting plate 150 is located on the side axle housing 110, and the brake is mounted on the brake mounting plate 150, so that the brake can brake the wheel hub, thereby ensuring the safety of the vehicle. For example, the half-axle sleeve 140 is interference-fitted with the side axle housing 110, and the half-axle sleeve 140 is connected to the side axle housing 110 by a press-fit process, so that the connection between the half-axle sleeve 140 and the side axle housing 110 can be more secure, thereby allowing the load of the vehicle under different working conditions to be transferred to the side axle housing 110.

[0062] Specifically, the side axle housing 110, the middle axle housing 120, and the brake mounting plate 150 are all castings, while the half-shaft sleeve 140 is a forging. The side axle housing 110, the middle axle housing 120, and the brake mounting plate 150 have complex manufacturing processes; therefore, they are formed by casting. This ensures the formation of the cavity 130 between the side axle housing 110 and the middle axle housing 120, maintains the dimensional range of the side axle housing 110, the middle axle housing 120, and the brake mounting plate 150, and reduces costs. The half-shaft sleeve 140 requires high precision and strength; therefore, it is formed by forging. This ensures the precision and strength of the half-shaft sleeve 140, and also improves its density and utilization rate.

[0063] The drive axle assembly 1000 according to this utility model includes: an axle housing assembly 100 (as described in the above embodiment), a motor assembly 200, and a first reducer assembly 300. The motor assembly 200 and the first reducer assembly 300 are connected and disposed within a receiving cavity 130. By forming the receiving cavity 130 together between the side axle housing 110 and the middle axle housing 120, the motor assembly 200 and the first reducer assembly 300 can be disposed within the receiving cavity 130. This arrangement avoids the motor assembly 200 and the first reducer assembly 300 bearing the loads of the vehicle under different operating conditions. The loads of the vehicle under different operating conditions are borne jointly by the side axle housing 110 and the middle axle housing 120, thereby preventing damage to the gears and bearings of the motor assembly 200 and the first reducer assembly 300. It also improves the performance and lifespan of the motor assembly 200 and the first reducer assembly 300, thus ensuring vehicle safety and increasing the maximum load that the vehicle can withstand.

[0064] In particular, such as Figure 3 As shown, there are two first reducer assemblies 300 and two motor assemblies 200. The two motor assemblies 200 and the two first reducer assemblies 300 are all disposed in the receiving cavity 130. The two motor assemblies 200 are arranged axially along the motor assembly 200, and the two first reducer assemblies 300 are respectively located on the side of the corresponding motor assembly 200 away from each other.

[0065] Understandably, the two first reducer assemblies 300 and the two motor assemblies 200 are located within the receiving cavity 130. The receiving cavity 130 can accommodate the motor assemblies 200 and the first reducer assemblies 300. This arrangement avoids the motor assemblies 200 and the first reducer assemblies 300 bearing the loads of the vehicle under different operating conditions. The loads of the vehicle under different operating conditions are borne jointly by the side axle housing 110 and the middle axle housing 120. This avoids damage to the gears and bearings of the motor assemblies 200 and the first reducer assemblies 300, and also improves the efficiency of the motor assemblies 200 and the first reducer assemblies 300. The performance and lifespan of the reducer assembly 300 can ensure vehicle safety and increase the maximum load the vehicle can withstand. The two motor assemblies 200 are arranged adjacent to each other, and the two first reducers are located on the side of the motor assemblies 200 away from each other. This arrangement facilitates the transmission of power from the two motor assemblies 200 to the adjacent first reducer assemblies 300, thereby facilitating the transmission of vehicle power. Moreover, the two motor assemblies 200 and the two first reducer assemblies 300 can work completely independently and simultaneously, thereby facilitating the driver and passengers to operate the vehicle's speed and turning.

[0066] In addition, such as Figure 4 As shown, a third mounting hole 114 is formed at one end of the side axle housing 110 adjacent to the middle axle housing 120, and a fourth mounting hole 210 is provided at the end of the motor assembly 200. The third mounting hole 114 and the fourth mounting hole 210 are arranged opposite to each other and connected by a second fastener.

[0067] In other words, a third mounting hole 114 is provided at the end of the side axle housing 110 near the middle axle housing 120, and a fourth mounting hole 210 is provided at the end of the motor assembly 200 near the side axle housing 110. The third mounting hole 114 and the fourth mounting hole 210 are arranged opposite each other, so that the side axle housing 110 and the motor assembly 200 can be limited and installed through the third mounting hole 114 and the fourth mounting hole 210. Moreover, the second fastener passes through the third mounting hole 114 and the fourth mounting hole 210, so that the side axle housing 110 and the motor assembly 200 can form a whole. This allows the load of the vehicle under different working conditions to be borne by the side axle housing 110 and the middle axle housing 120, thereby avoiding damage to the gears and bearings of the motor assembly 200.

[0068] In addition, such as Figure 3 As shown, the first reducer assembly 300 includes: a first sun gear 310, a first planet gear 320, a first ring gear 330, and a first planet carrier 340. The first planet gear 320 is disposed on the first planet carrier 340 and meshes with the first sun gear 310 and the first ring gear 330 respectively. Among them, one of the first sun gear 310, the first planet carrier 340, and the first ring gear 330 is a first input end and the other is a first output end. The first input end is connected to the motor assembly 200, and the first output end is used to output power.

[0069] It is understood that the first sun gear 310, the first planet gear 320, the first ring gear 330, and the first planet carrier 340 constitute the main structure of the first reducer assembly 300. The first planet carrier 340 limits the first planet gear 320, thereby facilitating the placement of the first planet gear 320 on the first planet carrier 340. The first planet gear 320 meshes with the first sun gear 310 and the first ring gear 330 respectively. The motor assembly 200 is splinedly connected to the first input end, thereby facilitating the transmission of power in the motor assembly 200. If the first sun gear 310 is the first input terminal and the first planetary carrier 340 or the first ring gear 330 is the first output terminal, the first input terminal is connected to the motor assembly 200, so that the power of the motor assembly 200 can be transmitted to the first output terminal through the first input terminal.

[0070] In addition, such as Figures 2-4 As shown, the drive axle assembly 1000 also includes: a half shaft 400 and a second reducer assembly 500. The half shaft 400 passes through the side axle housing 110 and is connected between the first reducer assembly 300 and the second reducer assembly 500. The second reducer assembly 500 is used to connect with the wheels.

[0071] In other words, the half-shaft 400 connects the first reducer assembly 300 and the second reducer assembly 500, thereby enabling the half-shaft 400 to transmit power between the first reducer assembly 300 and the second reducer assembly 500. Furthermore, the half-shaft 400 passes through the side axle housing 110, and the second reducer assembly 500 is connected to the wheel. This arrangement allows the power of the motor assembly 200 to be transmitted to the wheel first through the first reducer assembly 300 and then through the second reducer assembly 500, thus ensuring the efficiency of power transmission. It also eliminates the need for a differential, thereby enabling differential speed control of the vehicle and facilitating vehicle turning.

[0072] In addition, such as Figure 3 As shown, the second reducer assembly 500 includes: a second sun gear 510, a second planet gear 520, a second ring gear 530, and a second planet carrier 540. The second planet gear 520 is disposed on the second planet carrier 540 and meshes with the second sun gear 510 and the second ring gear 530 respectively. Among them, one of the second sun gear 510, the second planet carrier 540, and the second ring gear 530 is a second input end and the other is a second output end. The second input end is connected to the half shaft 400, and the second output end is used to connect to the wheel.

[0073] It is understandable that the second sun gear 510, the second planet gear 520, the second ring gear 530, and the second planet carrier 540 constitute the main structure of the second reducer assembly 500. The second planet carrier 540 limits the second planet gear 520, thereby facilitating the placement of the second planet gear 520 on the second planet carrier 540. The second planet gear 520 meshes with the second sun gear 510 and the second ring gear 530 respectively. The half-shaft 400 is splinedly connected to the first input end, thereby facilitating the transmission of power from the half-shaft 400. If the second sun gear 510 is the first input end, the second planet carrier 540 or the second ring gear 530 is the second output end; if the second planet carrier 540 is the second input end, the second sun gear 510 or the second ring gear 530 is the second output end; if the second ring gear 530 is the second input end, the second sun gear 510 or the second planet carrier 540 is the second output end. The second input end is connected to the half-shaft 400, thereby allowing the power of the half-shaft 400 to be transmitted to the second output end through the second input end.

[0074] In addition, such as Figure 2 and Figure 4 As shown, the second reducer assembly 500 includes: a reducer housing 550, a second sun gear 510, a second planet gear 520, a second planet carrier 540, and a second ring gear 530 disposed inside the reducer housing 550. The second input end is the second sun gear 510, the second output end is the second planet carrier 540, and the second ring gear 530 is connected to the reducer housing 550.

[0075] In other words, the second sun gear 510, the second planetary gear 520, the second planetary carrier 540, and the second ring gear 530 are located inside the reducer housing 550. The reducer housing 550 can protect the second sun gear 510, the second planetary gear 520, the second planetary carrier 540, and the second ring gear 530, thereby extending their service life and ensuring their performance. The second input end is the second sun gear 510, the second output end is the planetary carrier, and the second ring gear 530 is connected to the reducer housing 550. This allows the power of the motor assembly 200 to first pass through the first reducer assembly 300, then through the half-shaft 400 to the second sun gear 510. The second sun gear 510 then transmits the power to the second planetary carrier 540, and finally to the wheels, thus achieving two-stage reduction of the vehicle.

[0076] The vehicle according to this utility model includes: the drive axle assembly 1000 of the above embodiment. By forming a receiving cavity 130 between the side axle housing 110 and the middle axle housing 120, the motor assembly 200 and the first reducer assembly 300 can be disposed in the receiving cavity 130. This arrangement can prevent the motor assembly 200 and the first reducer assembly 300 from bearing the load of the vehicle under different operating conditions. The load of the vehicle under different operating conditions is borne by the side axle housing 110 and the middle axle housing 120 together, thereby preventing damage to the gears and bearings of the motor assembly 200 and the first reducer assembly 300, improving the performance and lifespan of the motor assembly 200 and the first reducer assembly 300, and thus ensuring the safety of the vehicle and increasing the maximum load that the vehicle can withstand.

[0077] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0078] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0080] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bridge housing assembly (100), characterized in that, include: Side bridge housing (110); The middle axle housing (120) and the side axle housings (110) are located on opposite sides of the middle axle housing (120) and connected to the middle axle housing (120). The middle axle housing (120) and the side axle housings (110) together form a receiving cavity (130). The receiving cavity (130) is used to receive the motor assembly (200) and the first reducer assembly (300) connected to the motor assembly (200). The middle bridge housing (120) includes at least two connecting plates (121), which are connected between the side bridge housings (110) on both sides, and the at least two connecting plates (121) are spaced apart in the circumferential direction of the middle bridge housing (120).

2. The bridge housing assembly (100) according to claim 1, characterized in that, A first cavity (131) is formed inside the middle bridge housing (120) for accommodating the motor assembly (200). A second cavity (132) is formed at one end of the side bridge housing (110) adjacent to the middle bridge housing (120) and recessed toward the other end thereto. The first cavity (131) and the second cavity (132) communicate with each other. The first cavity (131) and the second cavity (132) together form at least a portion of the receiving cavity (130). The second cavity (132) is used to accommodate at least a portion of the first reducer assembly (300).

3. The bridge housing assembly (100) according to claim 2, characterized in that, The side bridge housing (110) includes: A first shell portion (111) has a first half-shaft (400) channel formed therein; The second shell portion (112) is connected to one end of the first shell portion (111) adjacent to the middle bridge shell (120). The second shell portion (112) is connected to the middle bridge shell (120) and forms the second cavity (132). The second cavity (132) is in communication with the channel of the first half shaft (400).

4. The bridge housing assembly (100) according to claim 3, characterized in that, The cross-sectional area of ​​the first half-shaft (400) channel is smaller than the cross-sectional area of ​​the second cavity (132), and the cross-sectional area of ​​the second cavity (132) is smaller than the cross-sectional area of ​​the first cavity (131).

5. The bridge housing assembly (100) according to claim 1, characterized in that, The inner circumferential surface of the connecting plate (121) is an arc-shaped surface.

6. The bridge housing assembly (100) according to claim 5, characterized in that, The inner circumferential surfaces of at least two of the connecting plates (121) are located within the same annular surface.

7. The bridge housing assembly (100) according to claim 1, characterized in that, A first mounting hole (113) is formed at one end of the side bridge housing (110) adjacent to the connecting plate (121), and a second mounting hole (122) is provided at the end of the connecting plate (121). The first mounting hole (113) and the second mounting hole (122) are arranged opposite to each other and connected by a first fastener.

8. The bridge housing assembly (100) according to claim 1, characterized in that, There are two connecting plates (121), which are arranged opposite each other in the vertical direction.

9. The bridge housing assembly (100) according to claim 1, characterized in that, Also includes: A half-shaft sleeve (140) is disposed at the end of the side axle housing (110) away from the middle axle housing (120). A first half-shaft (400) channel is formed inside the side axle housing (110), and a second half-shaft (400) channel is formed inside the half-shaft sleeve (140). The first half-shaft (400) channel communicates with the second half-shaft (400) channel; and / or A brake mounting plate (150) is disposed on the side axle housing (110) and is used to mount a brake.

10. The bridge housing assembly (100) according to claim 9, characterized in that, The side axle housing (110), the middle axle housing (120), and the brake mounting plate (150) are all castings, while the half-shaft sleeve (140) is a forging.

11. A drive axle assembly (1000), characterized in that, include: The bridge housing assembly (100) according to any one of claims 1-10; Motor assembly (200); The reducer assembly, the motor assembly (200) is connected to the first reducer assembly (300), and the motor assembly (200) and the first reducer assembly (300) are disposed in the receiving cavity (130).

12. The drive axle assembly (1000) according to claim 11, characterized in that, There are two of the first reducer assembly (300) and the motor assembly (200). The two motor assemblies (200) and the two first reducer assemblies (300) are both disposed in the receiving cavity (130). The two motor assemblies (200) are arranged axially in the motor assembly (200). The two first reducer assemblies (300) are respectively located on the side of the corresponding motor assembly (200) away from each other.

13. The drive axle assembly (1000) according to claim 11, characterized in that, A third mounting hole (114) is formed at one end of the side bridge housing (110) adjacent to the middle bridge housing (120), and a fourth mounting hole (210) is provided at the end of the motor assembly (200). The third mounting hole (114) and the fourth mounting hole (210) are arranged opposite to each other and connected by a second fastener.

14. The drive axle assembly (1000) according to claim 11, characterized in that, The first reducer assembly (300) includes: First sun wheel (310); First planetary gear (320); First gear ring (330); A first planetary carrier (340) is provided with a first planetary gear (320) and the first planetary gear (320) meshes with the first sun gear (310) and the first gear ring (330) respectively; Among them, one of the first sun gear (310), the first planet carrier (340) and the first gear ring (330) is a first input end and the other is a first output end. The first input end is connected to the motor assembly (200) and the first output end is used to output power.

15. The drive axle assembly (1000) according to claim 11, characterized in that, Also includes: A half-shaft (400) passes through the side bridge housing (110). The second reducer assembly (500) is connected between the first reducer assembly (300) and the second reducer assembly (500), and the second reducer assembly (500) is used to connect to the wheel.

16. The drive axle assembly (1000) according to claim 15, characterized in that, The second reducer assembly (500) includes: Second sun wheel (510); Second planetary gear (520); Second gear (530); The second planetary carrier (540) has the second planetary gear (520) disposed on it, and the second planetary gear (520) meshes with the second sun gear (510) and the second ring gear (530) respectively. Among them, one of the second sun gear (510), the second planet carrier (540) and the second gear ring (530) is a second input end and the other is a second output end. The second input end is connected to the half shaft (400) and the second output end is used to connect to the wheel.

17. The drive axle assembly (1000) according to claim 16, characterized in that, The second reducer assembly (500) includes: The reducer housing (550), the second sun gear (510), the second planet gear (520), the second planet carrier (540) and the second ring gear (530) are disposed inside the reducer housing (550), the second input end is the second sun gear (510), the second output end is the second planet carrier (540), and the second ring gear (530) is connected to the reducer housing (550).

18. A vehicle, characterized in that, include: The drive axle assembly (1000) according to any one of claims 11-17.

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