Speed reducer box body, speed reducer, driving assembly and vehicle

Abstract

The invention relates to a speed reducer box body, a speed reducer, a driving assembly and a vehicle, the speed reducer box body comprises a shell and an oil pump, a first cavity and an oil pool which are communicated with each other are arranged in the shell, the first cavity is configured to contain a gear structure of the speed reducer, the oil pool is configured to contain lubricating oil, and the oil pool is provided with a top end close to the first cavity; the oil pump is arranged on the shell, and the input end of the oil pump communicates with the oil pool and is located below the top end of the oil pool; the shell is provided with a first channel, one end of the first channel communicates with the output end of the oil pump, the other end of the first channel communicates with the first cavity, and lubricating oil sequentially passes through the oil pump and the first channel to lubricate a gear structure of the speed reducer. According to the speed reducer box body, a proper amount of lubricating oil can be continuously and stably provided for the gear structure part, needing to be lubricated, of the speed reducer, so that the lubricating efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a reducer housing, a reducer, a drive assembly and a vehicle. Background Art

[0002] In the related art, the lubrication system of the reducer of a traditional commercial vehicle mainly drives the gear oil in the oil pool to move in the reducer when the gears inside the reducer rotate, thereby causing the gear oil to splash onto bearings, gears and other positions. Some reducers are also equipped with an oil collecting box to catch the splashed oil and flow it to the part to be lubricated through its internal channel. However, this lubrication method is not efficient, and it is not easy to control the amount of lubricating oil entering the position to be lubricated. Summary of the invention

[0003] The embodiments of the present application provide a reducer housing, a reducer, a drive assembly and a vehicle, which improve the lubrication efficiency of the reducer to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above object, according to a first aspect of the present application, a reducer housing is provided, comprising:

[0005] A housing, wherein a first cavity and an oil pool are connected to each other, the first cavity is configured to accommodate the gear structure of the reducer, the oil pool is configured to accommodate lubricating oil, and the oil pool has a top end close to the first cavity; and

[0006] An oil pump is arranged on the housing, and an input end of the oil pump is connected to the oil pool and is located below the top of the oil pool;

[0007] Among them, a first channel is arranged on the shell, one end of the first channel is connected with the output end of the oil pump, and the other end of the first channel is connected with the first cavity, and the lubricating oil passes through the oil pump and the first channel in sequence to lubricate the gear structure of the reducer.

[0008] Optionally, a first bearing chamber is provided in the housing, the first bearing chamber is communicated with the first cavity and is configured to mount a bearing on one end of the reducer main shaft;

[0009] The first channel includes a first sub-channel, one end of the first sub-channel is communicated with the output end of the oil pump, and the other end of the first sub-channel is communicated with the first bearing chamber.

[0010] Optionally, the housing comprises:

[0011] a first sub-shell; and

[0012] A second sub-shell, wherein a first bearing chamber is disposed on the second sub-shell;

[0013] The first sub-shell and the second sub-shell are connected to each other to form a first cavity and an oil pool.

[0014] Optionally, the first subchannel includes:

[0015] a first oil circuit, disposed on the first sub-housing and connected to an input end of the oil pump; and

[0016] A second oil circuit is provided on the second sub-housing and communicated with the first bearing chamber;

[0017] The first oil circuit and the second oil circuit are connected to each other.

[0018] Optionally, the second oil circuit includes a first sub-oil circuit and a second sub-oil circuit that are connected to each other, the first sub-oil circuit is connected to the first oil circuit, and the second sub-oil circuit is connected to the first bearing chamber;

[0019] The second sub-housing is also provided with a second channel, one end of which is communicated with the first sub-oil path, and the other end of which is communicated with the first bearing chamber and faces the end of the reducer main shaft.

[0020] Optionally, the reducer housing further comprises a valve body, an input end of the valve body is communicated with the first sub-oil path, and an output end of the valve body is communicated with the second channel.

[0021] Optionally, a third channel is further provided on the second sub-housing, one end of the third channel is communicated with the first sub-oil path, and the other end of the third channel is communicated with the second channel;

[0022] The cross-sectional area of ​​the third channel is smaller than the cross-sectional area of ​​the second channel.

[0023] Optionally, a second bearing chamber is provided on the first sub-housing, the second bearing chamber is communicated with the first cavity and is configured to install a bearing on the other end of the reducer main shaft;

[0024] The first channel includes a second sub-channel, one end of the second sub-channel is communicated with the first oil passage, and the other end of the second sub-channel is communicated with the second bearing chamber.

[0025] Optionally, the first oil circuit includes a third sub-oil circuit and a fourth sub-oil circuit that are connected to each other, the third sub-oil circuit is connected to the input end of the oil pump, and the fourth sub-oil circuit is connected to the second oil circuit;

[0026] Wherein, the second sub-channel is communicated with the third sub-oil channel.

[0027] Optionally, the shell is also provided with a second cavity and a third bearing chamber which are interconnected, the second cavity is configured to install the motor, the third bearing chamber is connected to the second bearing chamber, and the third bearing chamber is configured to install the bearing on the motor output shaft.

[0028] Optionally, the second sub-channel is communicated with the second bearing chamber and the third bearing chamber respectively.

[0029] Optionally, a fourth channel is further provided on the shell, one end of the fourth channel is connected to the second sub-channel, and the other end of the fourth channel is connected to the second cavity and faces the stator of the motor.

[0030] Optionally, the shell is further provided with an oil inlet, which is connected to the first cavity and the second cavity;

[0031] The lubricating oil in the second cavity can flow from the oil inlet to the first cavity.

[0032] Optionally, a fourth bearing chamber and an oil groove are further provided on the second sub-housing, the oil groove communicates with the fourth bearing chamber and the first bearing chamber, and the fourth bearing chamber is configured to install a bearing on one end of the reducer secondary shaft.

[0033] Optionally, the reducer housing further includes a filter, and an input end and an output end of the filter are respectively connected to the output end of the oil pump and the first channel.

[0034] Optionally, a sixth channel is provided on the shell, one end of the sixth channel is connected to the input end of the cooler, and the other end of the sixth channel is connected to the output end of the filter.

[0035] Optionally, one side of the first cavity is open;

[0036] The reducer housing also includes a baffle, which is connected to the housing, is located in the first cavity and is arranged close to the opening of the first cavity, the opening of the first cavity faces the axle housing of the vehicle, and an oil passage is penetrated on the baffle;

[0037] The baffle plate and the inner wall of the housing are combined to form an oil pool, and the lubricating oil in the oil pool can flow from the oil outlet into the axle housing of the vehicle.

[0038] According to a second aspect of the present application, a reducer is provided, comprising:

[0039] Reducer housing;

[0040] The reducer main shaft is arranged in the first cavity of the reducer housing, and the two ends of the reducer main shaft are respectively connected to the bearings in the first bearing chamber and the second bearing chamber in the reducer housing; and

[0041] The reducer secondary shaft is arranged in the first cavity of the reducer housing, and one end of the reducer secondary shaft is connected to the bearing of the fourth bearing chamber in the reducer housing.

[0042] According to a third aspect of the present application, a drive assembly is provided, including a reducer.

[0043] Optionally, the drive assembly further includes a motor, which is installed in the second cavity of the reducer housing;

[0044] The reducer main shaft is connected to the output shaft of the motor, and both the reducer main shaft and the output shaft of the motor are hollow.

[0045] According to a fourth aspect of the present application, a vehicle is provided, comprising a drive assembly.

[0046] In the reducer housing of the embodiment of the present application, by setting the input end of the oil pump below the top of the lubricating oil in the oil pool, the oil pump can continuously and stably extract the lubricating oil in the oil pool, and transmit the lubricating oil to the first cavity through the first channel to lubricate the gear structure parts of the reducer that need lubrication. That is, the setting of the oil pump and the first channel can continuously and stably provide an appropriate amount of lubricating oil to the gear structure parts of the reducer that need lubrication, so as to improve the lubrication efficiency.

[0047] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0049] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0050] Figure 1 is a schematic diagram of the overall structure of a drive assembly provided in an exemplary embodiment of the present application;

[0051] Figure 2 is a partial structural schematic diagram of a reducer housing provided in an exemplary embodiment of the present application;

[0052] Figure 3 is a schematic diagram of the oil circuit structure in the reducer housing provided in an exemplary embodiment of the present application;

[0053] Figure 4 is a schematic cross-sectional structural diagram of a reducer housing provided in an exemplary embodiment of the present application;

[0054] Figure 5 is a schematic cross-sectional structural diagram of a second sub-housing provided in an exemplary embodiment of the present application;

[0055] Figure 6 is a schematic cross-sectional structural diagram of a first sub-housing provided in an exemplary embodiment of the present application;

[0056] Figure 7 is a schematic cross-sectional structural diagram of the first sub-housing provided in an exemplary embodiment of the present application from another viewing angle;

[0057] Figure 8 is a schematic cross-sectional structural diagram of the first sub-housing provided in an exemplary embodiment of the present application from another viewing angle;

[0058] Fig. 9 is a schematic structural diagram of a second sub-housing provided in an exemplary embodiment of the present application;

[0059] Fig.10 is a schematic structural diagram of a first sub-housing provided in an exemplary embodiment of the present application;

[0060] Fig.11 is a schematic cross-sectional structural diagram of the first sub-housing provided in an exemplary embodiment of the present application from another viewing angle;

[0061] Fig.12 is a schematic cross-sectional structural diagram of the first sub-housing provided in an exemplary embodiment of the present application from another viewing angle;

[0062] Fig.13 is a schematic cross-sectional structural diagram of the first sub-housing provided in an exemplary embodiment of the present application from another viewing angle;

[0063] Fig.14 Schematic diagram of the internal structure of a differential provided in an exemplary embodiment of the present application.

[0064] Description of reference numerals:

[0065] 1. Housing; 101. First sub-housing; 102. Second sub-housing; 2. First cavity; 3. Oil pool; 4. Oil pump; 5. First channel; 51. First sub-channel; 511. First oil circuit; 5111. Third sub-oil circuit; 5112. Fourth sub-oil circuit; 512. Second oil circuit; 5121. First sub-oil circuit; 5122. Second sub-oil circuit; 52. Second sub-channel; 521. Fifth sub-oil circuit; 522. Sixth sub-oil circuit; 523. Seventh sub-oil circuit; 6. First bearing chamber; 7. Second channel; 8. Valve body; 9. Third channel; 10, second bearing chamber; 11, second cavity; 12, third bearing chamber; 13, fourth channel; 14, oil inlet; 15, fourth bearing chamber; 16, oil tank; 17, filter; 18, fifth channel; 19, cooler; 20, sixth channel; 201, eighth sub-oil circuit; 202, ninth sub-oil circuit; 21, baffle; 22, oil port; 23, seventh channel; 24, eighth channel; 25, reducer main shaft; 26, reducer secondary shaft; 27, oil baffle; 28, axle housing; 29, motor; 30, output shaft. DETAILED DESCRIPTION

[0066] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0067] This application proposes a reducer housing. Figures 1 to 14 These are some embodiments of the present application.

[0068] See also Figures 1 to 3 In some embodiments of the present application, the reducer housing includes a shell 1, in which a first cavity 2 and an oil pool 3 are provided which are interconnected. The first cavity 2 is configured to accommodate the gear structure of the reducer, and the oil pool 3 is configured to accommodate lubricating oil. The oil pool 3 has a top end close to the first cavity 2; wherein the gear structure of the reducer includes a reducer main shaft 25, bearings at both ends of the reducer main shaft 25, gears on the reducer main shaft 25, a reducer secondary shaft 26, bearings at both ends of the reducer secondary shaft 26, gears on the reducer secondary shaft 26 and other components.

[0069] In some embodiments of the present application, the reducer housing also includes an oil pump 4, the input end of the oil pump 4 is connected to the oil pool 3 and is located below the top of the oil pool 3; wherein, when the reducer is used in a car, lubricating oil will be injected into the oil pool 3, and the liquid level of the lubricating oil will not exceed the top of the oil pool 3, so the input end of the oil pump 4 can be located below the liquid level of the lubricating oil, that is, the oil pump 4 can directly extract the lubricating oil from the oil pool 3.

[0070] In some embodiments of the present application, a first channel 5 is provided on the shell 1, one end of the first channel 5 is connected to the output end of the oil pump 4, and the other end of the first channel 5 is connected to the first cavity 2; wherein the oil pump 4 can draw lubricating oil from the oil pool 3, and transport the lubricating oil to the first cavity 2 through the first channel 5, thereby lubricating the gear structure of the reducer located in the first cavity 2.

[0071] In the technical solution of the present application, by setting the input end of the oil pump 4 below the top of the oil pool 3, the oil pump 4 can continuously and stably extract the lubricating oil in the oil pool 3, and transmit the lubricating oil to the first cavity 2 through the first channel 5 to lubricate the gear structure parts of the reducer that need lubrication. That is, the setting of the oil pump 4 and the first channel 5 can continuously and stably provide an appropriate amount of lubricating oil to the gear structure parts of the reducer that need lubrication, so as to improve the lubrication efficiency.

[0072] It can be understood that since the input end of the oil pump 4 is located below the top of the oil pool 3, when the oil pump 4 draws lubricating fluid from the oil pool 3, there is no need to provide a pipeline structure connecting the input end of the oil pump 4 and the oil pool 3 at the input end of the oil pump 4, thereby streamlining the structure of the reducer housing. At the same time, since there is no need to add parts inside the reducer housing, the risk of damage to the reducer during operation is reduced.

[0073] It should be added that the method of splashing lubrication of lubricating oil when the gears rotate adopted in the related art may cause the lubricating oil to splash to the parts that do not want to be lubricated, increase additional resistance, and thus reduce the transmission efficiency.

[0074] At the same time, splash lubrication may also cause too much or too little lubricating oil in the lubricated position of the reducer. If there is too much lubricating oil, a lubricating oil film may be formed inside the machine, resulting in increased friction, expanded friction area, and accelerated wear, thereby affecting the working efficiency and performance of the reducer; if there is too little lubricating oil, it may cause poor lubrication, increase friction between components, and cause the working efficiency of the reducer to decrease.

[0075] In some embodiments of the present application, a first bearing chamber 6 is provided in the housing 1, the first bearing chamber 6 is connected to the first cavity 2 and is configured to install the bearing on one end of the reducer main shaft 25; the first channel 5 includes a first sub-channel 51, one end of the first sub-channel 51 is connected to the output end of the oil pump 4, and the other end of the first sub-channel 51 is connected to the first bearing chamber 6; that is, in this embodiment, when the reducer is running, the oil pump 4 can transfer the lubricating oil in the oil pool 3 from the first sub-channel 51 to the first bearing chamber 6 and lubricate the bearing in the first bearing chamber 6, thereby reducing the friction of the bearing in the first bearing chamber 6 and reducing the loss of the bearing in the first bearing chamber 6. At the same time, the lubricating oil can also take away the heat generated by the bearing in the first bearing chamber 6 during operation to prevent the bearing from overheating.

[0076] The oil pump 4 continuously and stably provides a proper amount of lubricating oil to the bearing in the first bearing chamber 6 through the first sub-channel 51 , so as to improve the lubrication efficiency of the bearing in the first bearing chamber 6 .

[0077] See also Figures 4 to 5 In some embodiments of the present application, the housing 1 includes a first sub-housing 101 and a second sub-housing 102, and the second sub-housing 102 is provided with a first bearing chamber 6; the first sub-housing 101 and the second sub-housing 102 are connected to each other to form a first cavity 2 and an oil pool 3; that is, the assembly of the internal components of the reducer can be completed by disassembling and assembling the first sub-housing 101 and the second sub-housing 102.

[0078] In some embodiments of the present application, the oil pump 4 is installed on the first sub-housing 101, and the first bearing chamber 6 is located on the second sub-housing 102. Therefore, channels need to be opened on the first sub-housing 101 and the second sub-housing 102, and then the first sub-channel 51 is formed after the first sub-housing 101 and the second sub-housing 102 are assembled.

[0079] See also Figures 3 to 5 In some embodiments of the present application, the first sub-channel 51 includes a first oil circuit 511 and a second oil circuit 512. The first oil circuit 511 is arranged on the first sub-housing 101 and is connected to the input end of the oil pump 4; the second oil circuit 512 is arranged on the second sub-housing 102 and is connected to the first bearing chamber 6; wherein, after the first sub-housing 101 and the second sub-housing 102 are assembled, the first oil circuit 511 and the second oil circuit 512 are connected to each other to form the first sub-channel 51, so that the oil pump 4 can transfer the lubricating oil from the first sub-channel 51 to the first bearing chamber 6.

[0080] See also Figure 5 In some embodiments of the present application, the second oil circuit 512 includes a first sub-oil circuit 5121 and a second sub-oil circuit 5122 which are interconnected, the first sub-oil circuit 5121 is connected to the first oil circuit 511, and the second sub-oil circuit 5122 is connected to the first bearing chamber 6; in this embodiment, the lubricating oil entering the second sub-housing 102 is transmitted to the first bearing chamber 6 through the first sub-oil circuit 5121 and the second sub-oil circuit 5122 in turn to lubricate the bearings in the first bearing chamber 6.

[0081] See also Figures 4 to 5 In some embodiments of the present application, a second channel 7 is further provided on the second sub-housing 102, one end of the second channel 7 is connected to the first sub-oil path 5121, and the other end is connected to the first bearing chamber 6 and faces the end of the reducer main shaft 25; in this embodiment, the lubricating oil entering the first sub-oil path 5121 can also enter the second channel 7, and enter the first bearing chamber 6 from the second channel 7, thereby lubricating the reducer main shaft 25.

[0082] It can be understood that although the second channel 7 and the second sub-oil channel 5122 are both connected to the first bearing chamber 6, the connection positions of the second channel 7 and the second sub-oil channel 5122 and the first bearing chamber 6 are different, so that different components in the first bearing chamber 6 can be lubricated. Since the reducer main shaft 25 is hollow and the other end of the second channel 7 faces the end of the reducer main shaft 25, the lubricating oil flowing out of the second channel 7 can lubricate the end of the reducer main shaft 25 and also enter the reducer main shaft 25, thereby cooling and dissipating the reducer main shaft 25.

[0083] In addition, the first sub-oil passage 5121 is connected to the second channel 7 and the second sub-oil passage 5122 respectively, so the lubricating oil entering the first sub-oil passage 5121 will be divided into the second channel 7 and the second sub-oil passage 5122 respectively when flowing out from the first sub-oil passage 5121.

[0084] In some embodiments of the present application, the reducer main shaft 25 is connected to the output shaft 30 of the motor 29 via a spline, and the output shaft 30 of the motor 29 is also hollow, so that the lubricating oil entering the reducer main shaft 25 can also enter the motor 29 along the output shaft 30 of the motor 29, thereby lubricating and cooling the rotor in the motor 29.

[0085] In some embodiments of the present application, the reducer housing also includes a valve body 8, an input end of the valve body 8 is connected to the first sub-oil circuit 5121, and an output end of the valve body 8 is connected to the second channel 7; wherein, the valve body 8 can control the on-off of the first sub-oil circuit 5121 and the second channel 7. When the vehicle is in a moving state, the valve body 8 is closed, and the lubricating oil cannot enter the second channel 7, thereby preventing the lubricating oil from entering the rotor of the motor 29 along the reducer main shaft 25 and the output shaft 30 of the motor 29. Since the lubricating oil will roll in the rotor when the rotor is working, the mechanical loss of the rotor of the motor 29 will increase; and when the vehicle is in a parking and starting state, the valve body 8 is opened, so that the rotor of the motor 29 can be lubricated and cooled, and it can also match the pulse heating of the whole vehicle.

[0086] In addition, when the vehicle is in motion and the temperature of the motor 29 is too high, in order to protect the motor 29 , the control system of the vehicle can open the valve body 8 , thereby lubricating and cooling the rotor of the motor 29 while the vehicle is moving.

[0087] In some embodiments of the present application, the valve body 8 is a solenoid valve.

[0088] It should be added that, in the process of the lubricating oil entering the rotor of the motor 29 along the reducer main shaft 25 and the output shaft 30 of the motor 29, the reducer main shaft 25, the spline connection between the reducer main shaft 25 and the output shaft 30 of the motor 29, the output shaft 30 of the motor 29, and the rotor of the motor 29 will be lubricated and cooled in turn.

[0089] See also Figure 4 In some embodiments of the present application, a third channel 9 is further provided on the second sub-housing 102, one end of the third channel 9 is connected to the first sub-oil path 5121, and the other end is connected to the second channel 7; wherein the cross-sectional area of ​​the third channel 9 is smaller than the cross-sectional area of ​​the second channel 7. By providing the third channel 9, when the valve body 8 is in an open or closed state, the lubricating oil can flow from the first sub-oil path 5121 to the second channel 7 and then to the reducer main shaft 25, thereby lubricating the spline connection between the reducer main shaft 25 and the output shaft 30 of the motor 29.

[0090] Among them, since the lubricating oil demand at the spline connection between the reducer main shaft 25 and the output shaft 30 of the motor 29 is relatively low, the cross-sectional area of ​​the third channel 9 is set to be smaller than the cross-sectional area of ​​the second channel 7, so as to reduce the amount of oil entering the reducer main shaft 25 when the valve body 8 is in a closed state and the vehicle is in a moving state, thereby reducing the mechanical loss of the rotor of the motor 29.

[0091] See also Figure 4 In some embodiments of the present application, a second bearing chamber 10 is provided on the first sub-shell 101, and the second bearing chamber 10 is communicated with the first cavity 2 and is configured to install the bearing on the other end of the reducer main shaft 25; wherein, the two ends of the reducer main shaft 25 extend into the first bearing chamber 6 and the second bearing chamber 10 respectively, so that they can be connected to the bearings in the first bearing chamber 6 and the second bearing chamber 10, thereby realizing the assembly and installation of the reducer main shaft 25 in the reducer.

[0092] See also Figures 6 to 8 In some embodiments of the present application, the first channel 5 includes a second sub-channel 52, one end of the second sub-channel 52 is connected to the first oil path 511, and the other end is connected to the second bearing chamber 10. That is, in this embodiment, when the reducer is running, the oil pump 4 can transfer the lubricating fluid in the oil pool 3 from the first oil path 511 and the second sub-channel 52 to the second bearing chamber 10 and lubricate the bearing in the second bearing chamber 10, thereby reducing the friction of the bearing in the second bearing chamber 10 and reducing the loss of the bearing in the second bearing chamber 10. At the same time, the lubricating oil can also take away the heat generated by the bearing in the second bearing chamber 10 during operation to prevent the bearing from overheating.

[0093] The oil pump 4 continuously and stably provides a proper amount of lubricating oil to the bearings in the second bearing chamber 10 through the first oil passage 511 and the second sub-channel 52 , so as to improve the lubrication efficiency of the bearings in the second bearing chamber 10 .

[0094] In some embodiments of the present application, the first oil circuit 511 includes a third sub-oil circuit 5111 and a fourth sub-oil circuit 5112 that are interconnected, the third sub-oil circuit 5111 is connected to the input end of the oil pump 4, and the fourth sub-oil circuit 5112 is connected to the second oil circuit 512; wherein, the second sub-channel 52 is connected to the third sub-oil circuit 5111; that is, in this embodiment, in order to enable the extension direction of the first oil circuit 511 to be designed along the structure of the reducer case, the first oil circuit 511 is provided to include the third sub-oil circuit 5111 and the fourth sub-oil circuit 5112, the third sub-oil circuit 5111 is entirely opened on the housing 1, and the fourth sub-oil circuit 5112 is also entirely opened on the housing 1, and the third sub-oil circuit 5111 is directly connected to the fourth sub-oil circuit 5112 to ensure that the entire part of the first oil circuit 511 can be formed on the housing 1, and there is no need to provide another pipeline on the housing 1, thereby avoiding the risk of the pipeline falling off, and also making the transmission of the lubricating oil safe and stable. In addition, the third sub-oil circuit 5111 is connected to the second sub-channel 52 and the fourth sub-oil circuit 5112 respectively. Therefore, the lubricating oil entering the third sub-oil circuit 5111 will be divided into the second sub-channel 52 and the fourth sub-oil circuit 5112 respectively when flowing out from the third sub-oil circuit 5111, thereby lubricating the bearings of the first bearing chamber 6 and the second bearing chamber 10 at the same time.

[0095] In some embodiments of the present application, the housing 1 is further provided with a second cavity 11 and a third bearing chamber 12 which are interconnected, the second cavity 11 is configured to install a motor 29, the third bearing chamber 12 is connected to the second bearing chamber 10, and the third bearing chamber 12 is configured to install a bearing on an output shaft 30 of the motor 29; that is, in this embodiment, the motor 29 is installed through the second cavity 11, and the output shaft 30 of the motor 29 can extend from the second cavity 11 to the first cavity 2 and be connected to the reducer main shaft 25, and a bearing is provided in the third bearing chamber 12, and the bearing located in the third bearing chamber 12 is connected to the output shaft 30 of the motor 29, so that the operation of the motor 29 is smoother and quieter.

[0096] In some embodiments of the present application, the second sub-channel 52 is connected to the second bearing chamber 10 and the third bearing chamber 12 respectively; that is, in this embodiment, the lubricating oil flowing out from the second sub-channel 52 can lubricate and cool the bearings in the second bearing chamber 10 and the third bearing chamber 12 at the same time.

[0097] In some embodiments of the present application, the output end of the second sub-channel 52 is located in the middle of the second bearing chamber 10 and the third bearing chamber 12 , so as to better provide lubricating oil to the second bearing chamber 10 and the third bearing chamber 12 .

[0098] Among them, the lubricating oil entering the third sub-oil circuit 5111 will be divided into the second sub-channel 52 and the fourth sub-oil circuit 5112 when flowing out from the third sub-oil circuit 5111, thereby lubricating the bearings of the first bearing chamber 6, the second bearing chamber 10 and the third bearing chamber 12 at the same time.

[0099] In some embodiments of the present application, a fourth channel 13 is further provided on the shell 1, one end of the fourth channel 13 is connected to the second sub-channel 52, and the other end is connected to the second cavity 11 and faces the stator of the motor 29; in this embodiment, part of the lubricating oil flowing into the second sub-channel 52 will be diverted into the fourth channel 13, thereby lubricating and cooling the stator installed near the cavity wall of the second cavity 11.

[0100] In some embodiments of the present application, the oil pump 4 can extract the lubricating oil in the oil pool 3 and transport the lubricating oil to the first bearing chamber 6, the second bearing chamber 10, the third bearing chamber 12, and the second cavity 11 to simultaneously lubricate and cool the reducer main shaft 25, the bearings at both ends of the reducer main shaft 25, the output shaft 30 of the motor 29, the bearings on the output shaft 30 of the motor 29, the splines at the connection between the output shaft 30 of the motor 29 and the reducer main shaft 25, the rotor of the motor 29, and the stator of the motor 29.

[0101] In some embodiments of the present application, an oil inlet 14 is also provided on the shell 1, and the oil inlet 14 connects the first cavity 2 and the second cavity 11; that is, in this embodiment, the lubricating oil entering the second cavity 11 can flow back from the oil inlet 14 to the first cavity 2, and then enter the oil pool 3 again to be extracted by the oil pump 4.

[0102] In some embodiments of the present application, a seventh channel 23 and an eighth channel 24 are further provided on the shell 1. The seventh channel 23 is connected to the fourth channel 13 and extends in a direction away from the first cavity 2. The eighth channel 24 is connected to the oil inlet 14 and extends in a direction away from the first cavity 2. The seventh channel 23 and the eighth channel 24 are both connected to the passage on the end cover of the motor 29, thereby lubricating and cooling the components of the end cover of the motor 29.

[0103] It can be understood that the lubricating oil can flow from the fourth channel 13 to the seventh channel 23, the lubricating oil in the seventh channel 23 flows to the passage of the end cover of the motor 29, and the lubricating oil in the end cover passage of the motor 29 flows from the eighth channel 24 to the oil inlet 14 to complete the circulation of the lubricating oil.

[0104] In some embodiments of the present application, the second sub-channel 52 includes a fifth sub-oil circuit 521, a sixth sub-oil circuit 522 and a seventh sub-oil circuit 523 which are connected in sequence; wherein the fifth sub-oil circuit 521 is connected to the third sub-oil circuit 5111, and the seventh sub-oil circuit 523 is connected to the second bearing chamber 10 and the third bearing chamber 12; in this embodiment, in order to enable the extension direction of the second sub-channel 52 to be designed along the structure of the reducer case, the second sub-channel 52 includes a fifth sub-oil circuit 521, a sixth sub-oil circuit 522 and a seventh sub-oil circuit 523, the fifth sub-oil circuit 521 is entirely opened on the housing 1, the sixth sub-oil circuit 522 is entirely opened on the housing 1, and the seventh sub-oil circuit 523 is also entirely opened on the housing 1, so as to ensure that the entire part of the second sub-channel 52 can be formed on the housing 1, and there is no need to provide another pipeline on the housing 1, thereby avoiding the risk of the pipeline falling off, and making the transmission of the lubricating oil safe and stable.

[0105] See also Fig. 9 In some embodiments of the present application, a fourth bearing chamber 15 and an oil groove 16 are further provided on the second sub-housing 102. The oil groove 16 connects the fourth bearing chamber 15 with the first bearing chamber 6. The fourth bearing chamber 15 is configured to install the bearing on one end of the reducer countershaft 26; wherein, the lubricating oil flowing into the first bearing chamber 6 can also flow to the fourth bearing chamber 15 through the oil groove 16 after lubricating the bearing in the first bearing chamber 6, thereby lubricating the bearing of the fourth bearing chamber 15.

[0106] It can be understood that the reducer includes a reducer main shaft 25 and a reducer secondary shaft 26, and the gears on the reducer main shaft 25 and the reducer secondary shaft 26 are meshed with each other to reduce the rotation speed and increase the output torque.

[0107] See also Figure 10 to Figure 11 In some embodiments of the present application, the reducer housing further includes a filter 17, the input end and the output end of the filter 17 are respectively connected to the output end of the oil pump 4 and the first channel 5; by providing the filter 17, the lubricating oil inside the reducer can be filtered to prevent impurities from entering the interior of the reducer, thereby ensuring the cleanliness of the oil inside the reducer and delaying the service life of the reducer.

[0108] In some embodiments of the present application, the output end of the filter 17 is connected to the third sub-oil path 5111 .

[0109] In some embodiments of the present application, a fifth channel 18 is provided on the housing 1, one end of the fifth channel 18 is connected to the input end of the filter 17, and the other end is connected to the output end of the oil pump 4; the fifth channel 18 is provided to achieve communication between the oil pump 4 and the filter 17.

[0110] See also Figure 12 to Figure 13In some embodiments of the present application, the reducer housing further includes a cooler 19, the input end and the output end of the cooler 19 are respectively connected to the output end of the filter 17 and the first channel 5; by providing the cooler 19, the lubricating oil inside the reducer can be cooled, so that the lubricating oil can cool the gear structure inside the reducer.

[0111] In some embodiments of the present application, a sixth channel 20 is provided on the shell 1, one end of the sixth channel 20 is connected to the input end of the cooler 19, and the other end is connected to the output end of the filter 17; the sixth channel 20 is provided to achieve communication between the cooler 19 and the filter 17; the lubricating fluid first passes through the filter 17 and then passes through the cooler 19, which can avoid the presence of impurities in the lubricating oil and thus damage the cooler 19.

[0112] In some embodiments of the present application, the sixth channel 20 includes an eighth sub-oil circuit 201 and a ninth sub-oil circuit 202, and the eighth sub-oil circuit 201 and the ninth sub-oil circuit 202 are designed according to the shape of the first sub-shell 101 and the positional relationship between the cooler 19 and the filter 17 to ensure that the entire part of the sixth channel 20 can be formed on the shell 1, and there is no need to provide another pipeline on the first sub-shell 101, thereby avoiding the risk of the pipeline falling off and making the transmission of the lubricating oil safe and stable.

[0113] In some implementations of the present application, the positional relationship among the filter 17 , the cooler 19 , and the oil pump 4 is not limited; wherein, the filter 17 and the cooler 19 may be installed at any position on the housing 1 .

[0114] In some embodiments of the present application, the filter 17 is installed close to the oil pump 4 to shorten the length of the fifth passage 18 .

[0115] See also Fig.14 In some embodiments of the present application, one side of the first cavity 2 is open; the reducer housing also includes a baffle 21, which is connected to the housing 1, and is located in the first cavity 2 and close to the opening of the first cavity 2. The opening of the first cavity 2 faces the axle housing 28 of the vehicle, and an oil port 22 is penetrated through the baffle 21; wherein, the gear located on the reducer countershaft 26 meshes with the gear in the axle housing 28 at the opening of the first cavity 2 to realize power transmission between the motor 29 and the wheels.

[0116] The baffle plate 21 and the inner wall of the housing 1 form an oil pool 3, so that the lubricating oil can be accumulated in the oil pool 3. Since the lubricating oil needs to flow into the axle housing 28 to lubricate the gear structure in the axle housing 28, an oil passage 22 is also provided on the baffle plate 21, so that the lubricating oil in the oil pool 3 can flow from the oil passage 22 to the axle housing 28 of the vehicle.

[0117] In some embodiments of the present application, the reducer housing also includes an oil baffle plate 27, which is located between the gear on the reducer secondary shaft 26 and the oil pool 3. Part of the oil baffle plate 27 is enclosed around the gear on the reducer secondary shaft 26, thereby reducing oil stirring losses and improving lubrication efficiency. At the same time, a magnetic steel is also provided on the oil baffle plate 27, which can absorb metal impurities in the lubricating oil and improve the cleanliness of the lubricating oil.

[0118] In some embodiments of the present application, a through hole is further provided on the oil baffle plate 27. When the reducer secondary shaft 26 rotates, under the action of the rotation of the gears on the reducer secondary shaft 26, the lubricating oil in the oil pool 3 can enter from the through hole into between the gears on the reducer secondary shaft 26 and the oil baffle plate 27, thereby lubricating the gears on the reducer secondary shaft 26.

[0119] The present application also proposes a reducer, including a reducer housing, the reducer housing being as described above. Since the reducer adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0120] The reducer further includes a reducer main shaft 25 and a reducer secondary shaft 26 , wherein both ends of the reducer main shaft 25 are respectively connected to the bearings in the first bearing chamber 6 and the second bearing chamber 10 , and one end of the reducer secondary shaft 26 is connected to the bearing of the fourth bearing chamber 15 .

[0121] The present application also proposes a drive assembly, including a reducer, the reducer being as described above. Since the present drive assembly adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0122] In some embodiments of the present application, the drive assembly includes a motor 29, which is installed in the second cavity 11 of the reducer housing; wherein the reducer main shaft 25 is connected to the output shaft 30 of the motor 29, and the reducer main shaft 25 and the output shaft 30 of the motor 29 are both hollow. Such a configuration allows the lubricating oil entering the reducer main shaft 25 to lubricate and cool the rotor of the motor 29 along the output shaft 30 of the motor 29.

[0123] The present application also proposes a vehicle, including a drive assembly, the drive assembly being as described above. Since the vehicle adopts all the technical solutions of all the above embodiments, it at least has the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0124] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0125] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0126] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0127] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A reducer housing, characterized in that: include: A housing, wherein a first cavity and an oil pool are connected to each other, the first cavity is configured to accommodate the gear structure of the reducer, the oil pool is configured to accommodate lubricating oil, and the oil pool has a top end close to the first cavity; and An oil pump is disposed on the housing, wherein an input end of the oil pump is connected to the oil pool and is located below the top end of the oil pool; Wherein, a first channel is provided on the shell, one end of the first channel is communicated with the output end of the oil pump, and the other end of the first channel is communicated with the first cavity.

2. The reducer housing according to claim 1, characterized in that: A first bearing chamber is provided in the housing, the first bearing chamber is communicated with the first cavity and is configured to mount a bearing on one end of the reducer main shaft; The first channel includes a first sub-channel, one end of the first sub-channel is communicated with the output end of the oil pump, and the other end of the first sub-channel is communicated with the first bearing chamber.

3. The reducer housing according to claim 2, characterized in that: The housing comprises: a first sub-shell; and a second sub-housing, wherein the first bearing chamber is disposed on the second sub-housing; The first sub-shell and the second sub-shell are connected to each other to form the first cavity and the oil pool.

4. The reducer housing according to claim 3, characterized in that: The first subchannel comprises: a first oil circuit, disposed on the first sub-housing and connected to an input end of the oil pump; and a second oil circuit, disposed on the second sub-housing and communicating with the first bearing chamber; Wherein, the first oil circuit and the second oil circuit are connected to each other.

5. The reducer housing according to claim 4, characterized in that: The second oil circuit includes a first sub-oil circuit and a second sub-oil circuit that are connected to each other, the first sub-oil circuit is connected to the first oil circuit, and the second sub-oil circuit is connected to the first bearing chamber; The second sub-housing is also provided with a second channel, one end of which is communicated with the first sub-oil passage, and the other end of which is communicated with the first bearing chamber and faces the end of the reducer main shaft.

6. The reducer housing according to claim 5, characterized in that: The reducer housing further comprises a valve body, an input end of the valve body is in communication with the first oil sub-channel, and an output end of the valve body is in communication with the second channel.

7. The reducer housing according to claim 6, characterized in that: The second sub-housing is also provided with a third channel, one end of the third channel is communicated with the first sub-oil path, and the other end of the third channel is communicated with the second channel; Wherein, the cross-sectional area of ​​the third channel is smaller than the cross-sectional area of ​​the second channel.

8. The reducer housing according to claim 4, characterized in that: The first sub-housing is provided with a second bearing chamber, the second bearing chamber is communicated with the first cavity and is configured to install the bearing on the other end of the reducer main shaft; The first channel includes a second sub-channel, one end of the second sub-channel is communicated with the first oil passage, and the other end of the second sub-channel is communicated with the second bearing chamber.

9. The reducer housing according to claim 8, characterized in that: The first oil circuit includes a third sub-oil circuit and a fourth sub-oil circuit which are connected to each other, the third sub-oil circuit is connected to the input end of the oil pump, and the fourth sub-oil circuit is connected to the second oil circuit; Wherein, the second sub-channel is communicated with the third sub-oil channel.

10. The reducer housing according to claim 8, characterized in that: The housing is further provided with a second cavity and a third bearing chamber which are interconnected, wherein the second cavity is configured to install a motor, and the third bearing chamber is connected to the second bearing chamber, and the third bearing chamber is configured to install a bearing on an output shaft of the motor.

11. The reducer housing according to claim 10, characterized in that: The second sub-channel is communicated with the second bearing chamber and the third bearing chamber respectively.

12. The reducer housing according to claim 10, characterized in that: The shell is also provided with a fourth channel, one end of which is communicated with the second sub-channel, and the other end of which is communicated with the second cavity and faces the stator of the motor.

13. The reducer housing according to claim 10, characterized in that: The housing is also provided with an oil inlet, the oil inlet being connected to the first cavity and the second cavity; The lubricating oil in the second cavity can flow from the oil inlet to the first cavity.

14. The reducer housing according to claim 3, characterized in that: The second sub-housing is also provided with a fourth bearing chamber and an oil groove, the oil groove is connected with the fourth bearing chamber and the first bearing chamber, and the fourth bearing chamber is configured to install the bearing on one end of the reducer secondary shaft.

15. The reducer housing according to claim 1, characterized in that: The reducer housing further comprises a filter, and an input end and an output end of the filter are respectively connected to the output end of the oil pump and the first channel.

16. The reducer housing according to claim 15, characterized in that: The housing is provided with a fifth channel, one end of the fifth channel is connected to the input end of the filter, and the other end of the fifth channel is connected to the output end of the oil pump.

17. The reducer housing according to claim 15, characterized in that: The reducer housing further comprises a cooler, and an input end and an output end of the cooler are respectively connected to an output end of the filter and the first channel.

18. The reducer housing according to claim 17, characterized in that: The shell is provided with a sixth channel, one end of the sixth channel is connected to the input end of the cooler, and the other end of the sixth channel is connected to the output end of the filter.

19. The reducer housing according to claim 1, characterized in that: One side of the first cavity is open; The reducer housing further comprises a baffle, which is connected to the housing, is located in the first cavity and is arranged close to the opening of the first cavity, the opening of the first cavity faces the axle housing of the vehicle, and an oil passage is penetrated on the baffle; The baffle and the inner wall of the housing are combined to form the oil pool, and the lubricating oil in the oil pool can flow from the oil outlet into the axle housing of the vehicle.

20. A reducer, characterized in that: include: The reducer housing according to any one of claims 1 to 19; A reducer main shaft is arranged in the first cavity of the reducer housing, and two ends of the reducer main shaft are respectively connected to bearings in the first bearing chamber and the second bearing chamber in the reducer housing; and The reducer secondary shaft is arranged in the first cavity of the reducer housing, and one end of the reducer secondary shaft is connected to the bearing of the fourth bearing chamber in the reducer housing.

21. A drive assembly, characterized in that: Comprising the reducer as claimed in claim 20.

22. The drive assembly according to claim 21, characterized in that: The drive assembly further includes a motor, which is installed in the second cavity of the reducer housing; Wherein, the reducer main shaft is connected to the output shaft of the motor, and the reducer main shaft and the output shaft of the motor are both hollow.

23. A vehicle, characterized in that: Comprising a drive assembly as claimed in any one of claims 21 to 22.

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