End cover for transmission component shell and transmission assembly

Abstract

The utility model provides an end cover for a transmission component shell and a transmission assembly, the end cover for the transmission component shell comprises an end cover body, and a bearing mounting part for mounting a bearing is arranged on one side, facing an inner cavity of the transmission component shell, of the end cover body; a first heat exchange cavity close to the bearing installation part is formed in the end cover body, and heat exchange fluid flowing through the first heat exchange cavity can exchange heat with the bearing through the end cover body. According to the end cover disclosed by the utility model, the bearing mounting part is arranged on one side of the end cover body, and the first heat exchange cavity is arranged close to the bearing mounting part, so that external heat exchange of the bearing can be realized through heat exchange fluid flowing through the first heat exchange cavity, the heat exchange effect of the bearing can be improved, the bearing is ensured to be in a proper working condition, and the service life of the bearing is prolonged. And the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to an end cover for a transmission component housing.

[0002] The utility model also relates to a transmission assembly provided with the end cover for the transmission component housing. Background Art

[0003] In the transmission structure of the vehicle, the bearings are cooled by the oil in the transmission cavity. Sometimes the bearing lubrication system in the transmission cavity is complicated, and it is difficult for the bearing to achieve the required cooling flow. The common method is to add an oil guide groove to the bearing housing to guide the oil thrown over by the gear operation into the bearing, or to design an oil injection pipe to lead a branch of the lubricating oil from the oil pump to the oil injection pipe, and then the oil injection pipe is divided into small nozzles, which are aimed at the small opening reserved for the bearing position on the housing to cool the bearing position through the sprayed oil. Although such a design can achieve some cooling effect, when the bearing position needs greater cooling, it cannot meet the use requirements, resulting in insufficient lubrication causing continuous heating of the bearing, corrosion, melting of the cage, and even transmission failure. Utility Model Content

[0004] In view of this, the utility model aims to provide an end cover for a transmission assembly housing, so as to improve the heat exchange effect of the bearing.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] An end cover for a transmission assembly housing comprises an end cover body;

[0007] A bearing mounting portion for mounting a bearing is provided on one side of the end cover body facing the inner cavity of the transmission assembly housing;

[0008] A first heat exchange cavity close to the bearing mounting portion is provided in the end cover body, and the heat exchange fluid flowing through the first heat exchange cavity can perform heat exchange with the bearing through the end cover body.

[0009] Furthermore, the bearing mounting portion includes a bearing chamber, and the bearing chamber is a plurality of bearing chambers arranged at intervals on the end cover body, and the heat exchange fluid flowing through the first heat exchange cavity can exchange heat for the bearings in each bearing chamber through the end cover body.

[0010] Furthermore, a partition plate is provided in the first heat exchange chamber, and the partition plate divides the first heat exchange chamber into a plurality of sub-cavities; and the plurality of bearing chambers are arranged in one-to-one correspondence with the plurality of sub-cavities.

[0011] Furthermore, there are a plurality of partition plates, and each of the partition plates is provided with a connecting portion connecting the sub-cavities on both sides thereof, so that the heat exchange fluid can flow through each of the sub-cavities in sequence.

[0012] Furthermore, along the flow direction of the heat exchange fluid, the connecting portions on adjacent partition plates are arranged in a staggered manner.

[0013] Furthermore, a portion of the end cover body is arched along the direction of the inner cavity of the transmission component shell toward the first heat exchange cavity, and the bearing chamber is formed on a side facing the inner cavity of the transmission component shell.

[0014] Furthermore, the end cover body includes a first cover body and a second cover body that are snap-fitted together, and the first heat exchange cavity is formed between the first cover body and the second cover body; the bearing mounting portion is arranged on the first cover body, and the inlet and outlet of the first heat exchange cavity are arranged on the second cover body.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The end cover for the transmission component housing described in the utility model is provided with a bearing mounting portion for mounting the bearing on the end cover body, and a first heat exchange cavity is arranged in the end cover body near the bearing mounting portion, so that the heat exchange fluid flowing through the first heat exchange cavity can exchange heat with the bearing through the end cover body, thereby realizing external heat exchange of the bearing, improving the heat exchange effect of the bearing, ensuring that the bearing is in suitable working conditions, thereby facilitating increasing the service life of the bearing, and having a better use effect.

[0017] In addition, the bearing mounting portion adopts a bearing chamber, and the bearing chambers are arranged in a plurality of intervals on the end cover body, so that the heat exchange fluid flowing through the first heat exchange cavity can exchange heat for the bearings in each bearing chamber through the end cover body, thereby improving the heat exchange effect of multiple bearings. The partition plate is arranged to facilitate the first heat exchange cavity to separate multiple cavities. At this time, the multiple bearing chambers are arranged one by one with the multiple sub-cavities, which can further improve the heat exchange effect of each bearing chamber.

[0018] Secondly, multiple partition plates are provided, and adjacent sub-cavities are connected through the connecting parts on the partition plates, so that each bearing can be heat exchanged one by one, thereby greatly improving the heat exchange effect of the bearing and effectively avoiding bearing failure. The connecting parts on adjacent partition plates are arranged in a staggered manner along the flow direction of the heat exchange fluid, which can extend the flow path of the heat exchange fluid and further improve the heat exchange effect of the bearing. By utilizing the partial arch of the end cover body and forming a bearing chamber on the side facing the inner cavity of the transmission component housing, the processing and preparation of the bearing chamber can be facilitated, and it is also beneficial to the preparation and molding of the end cover body.

[0019] In addition, the end cover body adopts a shell and a cover body that are snap-fitted together, so that the first heat exchange chamber is formed between the first cover body and the second cover body, and the bearing mounting part is arranged on the first cover body, and the inlet and outlet of the first heat exchange chamber are arranged on the second cover body. This can facilitate the preparation and molding of the first heat exchange chamber, and also facilitate the arrangement of the bearing mounting part and the inlet and outlet of the first heat exchange chamber.

[0020] Another object of the utility model is to provide a transmission assembly, including a transmission, wherein the transmission housing is provided with the end cover for the transmission assembly housing as described above, and the transmission housing constitutes the transmission assembly housing.

[0021] Furthermore, it also includes a motor connected to the transmission, wherein a second heat exchange chamber for exchanging heat for the motor stator is provided in the housing of the motor, and the second heat exchange chamber is connected to the first heat exchange chamber.

[0022] Furthermore, the first heat exchange chamber and the second heat exchange chamber are connected in series to a circulating water circuit of the vehicle.

[0023] The transmission assembly of the utility model, by adopting the above-mentioned end cover, can better exchange heat for the bearing at the end of the transmission shaft in the transmission, ensure that the bearing is in a better working environment, thereby increasing the service life of the bearing and facilitating increasing the service life of the transmission assembly.

[0024] In addition, the second heat exchange chamber is connected to the first heat exchange chamber, so that the heat exchange of the bearing and the motor stator can be realized together, making the heat exchange structure on the transmission more compact. The first heat exchange chamber and the second heat exchange chamber are connected in series to the circulating water circuit of the vehicle, so that the circulating water circuit of the vehicle can be used to realize external heat exchange of the bearing and the motor stator, thereby improving the heat exchange effect of the bearing and the motor stator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0026] Figure 1 It is a structural schematic diagram of the end cover for the transmission assembly housing according to an embodiment of the utility model from a first perspective;

[0027] Figure 2 It is a structural schematic diagram of the second viewing angle of the end cover for the transmission assembly housing according to an embodiment of the utility model;

[0028] Figure 3 This is a schematic structural diagram of an end cover for a transmission assembly housing equipped with a bearing according to an embodiment of the utility model;

[0029] Figure 4 This is a schematic structural diagram of the first end cover according to an embodiment of the utility model;

[0030] Figure 5 A schematic structural diagram of a second end cover from a first viewing angle according to an embodiment of the utility model;

[0031] Figure 6 A schematic structural diagram of a second end cover according to an embodiment of the utility model from a second viewing angle;

[0032] Figure 7 A schematic structural diagram of a transmission according to an embodiment of the utility model from a first perspective;

[0033] Figure 8 A schematic structural diagram of a transmission according to an embodiment of the utility model from a second viewing angle;

[0034] Fig. 9 It is a structural schematic diagram of the transmission according to the embodiment of the utility model from a third viewing angle;

[0035] Fig.10 This is a schematic diagram of the flow path of the heat exchange fluid according to an embodiment of the utility model;

[0036] Description of reference numerals:

[0037] 1. End cover body; 2. First shell; 3. Second shell; 4. Connecting pipe; 5. Circulating water circuit; 10. Connecting piece; 20. Bearing;

[0038] 11. first cover body; 12. second cover body; 100. bearing chamber; 101. first bearing chamber; 102. second bearing chamber; 103. third bearing chamber; 113. first connecting hole; 114. first heat exchange chamber; 121. inlet; 122. outlet; 123. second connecting hole; 1140. connecting part; 1141. first sub-chamber; 1142. second sub-chamber; 1143. third sub-chamber; 1144. first partition plate; 1145. second partition plate; 1201. first joint; 1202. second joint;

[0039] 31. Second heat exchange chamber; 32. Liquid inlet; 33. Liquid outlet; 301. Cooling water jacket. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0041] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0043] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0044] Embodiment 1

[0045] This embodiment relates to an end cover for a transmission assembly housing, which can improve the heat exchange effect of the bearing through structural optimization.

[0046] In terms of overall composition, see Figures 1 to 3 As shown, the end cover for the transmission assembly housing of this embodiment includes an end cover body 1, and a bearing mounting portion for mounting a bearing 20 is provided on the side of the end cover body 1 facing the inner cavity of the transmission assembly housing. A first heat exchange cavity 114 close to the bearing mounting portion is provided in the end cover body 1, and the heat exchange fluid flowing through the first heat exchange cavity 114 can exchange heat with the bearing 20 through the end cover body 1.

[0047] At this time, in the above structure, a bearing mounting portion for mounting the bearing 20 is provided on one side of the end cover body 1, and a first heat exchange chamber 114 is arranged adjacent to the bearing mounting portion, so that the heat exchange fluid flowing through the first heat exchange chamber 114 can perform external heat exchange on the bearing 20 through the end cover body 1, thereby improving the heat exchange effect of the bearing 20 and ensuring that the bearing 20 is in suitable working conditions.

[0048] It should be noted that the end cover body 1 is used to block the opening of the inner cavity of the transmission component housing, wherein the inner cavity of the transmission component housing is provided with transmission components such as a transmission shaft, a transmission gear and a bearing 20, wherein the bearing 20 is installed at the end of the transmission shaft. In addition, the transmission component housing may be, for example, a transmission housing, a motor housing or other housing equipped with a transmission shaft. The first heat exchange chamber 114 is arranged adjacent to the bearing mounting portion. At this time, the heat exchange fluid flowing through the first heat exchange chamber 114 can timely exchange heat with the bearing mounting portion, that is, can timely exchange heat with the bearing 20.

[0049] Moreover, the bearing mounting portion is separated from the first heat exchange chamber 114, which is also conducive to the heat exchange of the bearing 20 through the circulation of the external heat exchange fluid in the first heat exchange chamber 114. Compared with using the cooling medium in the inner cavity of the transmission component housing, this method can better improve the heat exchange effect of the bearing 20.

[0050] In addition, it should also be pointed out that the heat exchange fluid flowing through the first heat exchange cavity 114 can be oil, water or gas, etc., and the heat transfer between the heat exchange fluid and the end cover body 1 can heat or cool the bearing 20. In this embodiment, as a preference, the heat exchange fluid is cooling water, and the cooling of the bearing 20 is described in detail by taking it as an example.

[0051] For more details, see 1 to Figure 3 , and combined with Figure 4 As shown, in this embodiment, the bearing mounting portion includes a bearing chamber 100, and the bearing chamber 100 is arranged in a plurality of intervals on the end cover body 1, and the heat exchange fluid flowing through the first heat exchange cavity 114 can exchange heat for the bearing 20 in each bearing chamber 100 through the end cover body 1. At this time, the bearing mounting portion adopts the bearing chamber 100, and the bearing chamber 100 is arranged in a plurality of intervals on the end cover body 1, and the heat exchange fluid flowing through the first heat exchange cavity 114 can exchange heat for the bearing 20 in each bearing chamber 100 through the end cover body 1.

[0052] As a preferred embodiment, in this embodiment, a portion of the end cover body 1 is arched along the direction of the inner cavity of the transmission component housing toward the first heat exchange cavity 114, and the bearing chamber 100 is formed on the side facing the inner cavity of the transmission component housing. In this way, the bearing chamber 100 is formed by using a portion of the end cover body 1, which can facilitate the processing and preparation of the bearing chamber 100 and also facilitate the preparation and molding of the end cover body 1.

[0053] In specific implementation, the multiple bearing chambers 100 formed on one side of the end cover body 1 all extend toward the first heat exchange chamber 114, and the outer side of each bearing chamber 100, that is, the side away from the inner cavity of the transmission component housing, constitutes a part of the side wall of the first heat exchange chamber 114, so that the contact area between each bearing chamber 100 and the heat exchange fluid flowing through the first heat exchange chamber 114 can be increased, and the outer side of each bearing chamber 100 can be fully heat exchanged, that is, each bearing 20 can be fully heat exchanged. And when the heat exchange fluid is cooling water, it can fully cool each bearing 20 and improve the cooling effect of the bearing 20.

[0054] It should be noted that, in addition to adopting the structural form of the bearing chamber 100, the bearing mounting portion can also be set to the following structure, that is, a part of the end cover body 1 is arched in the direction pointing to the inner cavity of the transmission component shell to form a hollow shaft. At this time, a recessed portion is formed on the side facing the first heat exchange cavity 114. When in use, the bearing is sleeved on the hollow shaft, and the end of the transmission shaft is sleeved on the outer ring of the bearing through a structure similar to a sleeve. This is also possible.

[0055] On the basis of providing a plurality of bearing chambers 100, as a preferred embodiment, a partition plate is provided in the first heat exchange chamber 114, the partition plate divides the first heat exchange chamber 114 into a plurality of sub-cavities, and the plurality of bearing chambers 100 are provided in a one-to-one correspondence with the plurality of sub-cavities. At this time, the plurality of cavities separated by the partition plate correspond to the plurality of bearing chambers in a one-to-one correspondence, which can further improve the heat exchange effect of each bearing chamber 100.

[0056] The above-mentioned sub-cavities can be connected or independently arranged. When they are independently arranged, the inlet 121 and the outlet 122 of the heat exchange fluid need to be respectively arranged on the end cover body 1 corresponding to each sub-cavity. Figure 4 As shown, there are multiple partition plates, and each partition plate is provided with a connecting portion 1140 connecting the sub-cavities on both sides thereof, so that the heat exchange fluid can flow through each sub-cavity in sequence. At this time, the adjacent sub-cavities are connected through the connecting portion 1140, so that a flow channel for the heat exchange fluid can be formed in the first heat exchange cavity 114, and each bearing 20 can perform heat exchange one by one, thereby greatly improving the heat exchange effect of the bearing 20 and effectively avoiding the failure of the bearing 20.

[0057] Based on the arrangement of multiple partition plates and multiple sub-cavities, in this embodiment, as a further preferred implementation, the connecting portions 1140 on adjacent partition plates are arranged alternately along the flow direction of the heat exchange fluid. This can extend the flow path of the heat exchange fluid and further improve the heat exchange effect of the bearing 20.

[0058] When implementing it, Figure 4 and Figure 8As shown, three bearing chambers 100 are provided on one side of the end cover body 1. Figure 4 The first bearing chamber 101, the second bearing chamber 102 and the third bearing chamber 103 are shown in the figure. A first heat exchange chamber 114 is formed on the other side of the end cover body 1, and a plurality of partition plates are arranged in the first heat exchange chamber 114, and the plurality of partition plates separate the first heat exchange chamber 114 into a plurality of sub-cavities, wherein the plurality of partition plates are also Figure 4 The first partition plate 1144 and the second partition plate 1145 shown in FIG. Figure 4 The first sub-cavity 1141, the second sub-cavity 1142 and the third sub-cavity 1143 are shown in the figure. The first sub-cavity 1141, the second sub-cavity 1142 and the third sub-cavity 1143 are arranged in one-to-one correspondence with the first bearing chamber 101, the second bearing chamber 102 and the third bearing chamber 103 respectively.

[0059] It should be noted that, in addition to the three bearing chambers, the end cover body 1 may also be provided with one, two or more bearing chambers. The number of the sub-cavities is set corresponding to the number of the bearing chambers 100.

[0060] In this embodiment, as a preferred implementation, Figures 1 to 6 As shown, the end cover body 1 includes a first cover body 11 and a second cover body 12 that are connected by snapping, and a first heat exchange cavity 114 is formed between the first cover body 11 and the second cover body 12. The bearing mounting portion is arranged on the first cover body 11, and the inlet 121 and the outlet 122 of the first heat exchange cavity 114 are arranged on the second cover body 12. At this time, the end cover body 1 adopts a shell and a cover body that are connected by snapping, so that the first heat exchange cavity 114 is formed between the first cover body 11 and the second cover body 12, which is conducive to the processing and preparation of the first heat exchange cavity 114. In addition, the bearing mounting portion is arranged on the first cover body 11, and the inlet 121 and the outlet 122 of the first heat exchange cavity 114 are arranged on the second cover body 12, which is also convenient for the arrangement of the bearing mounting portion and the inlet 121 and the outlet 122 of the first heat exchange cavity 114.

[0061] In a specific implementation, a first joint 1201 and a second joint 1202 are provided on the second cover body 12, and the first joint 1201 and the second joint 1202 are respectively connected to the inlet 121 and the outlet 122 of the first heat exchange chamber 114, and the first joint 1201 and the second joint 1202 can be fixed to the second cover body 12 by, for example, screw connection. At this time, the provision of the first joint 1201 and the second joint 1202 is conducive to connecting the pipelines and also conducive to the layout of the pipelines.

[0062] In order to ensure the sealing of the connection between the first cover body 11 and the second cover body 12, in this embodiment, a sealing member is provided between the first cover body 11 and the second cover body 12, and the sealing member is used to seal the gap between the first cover body 11 and the second cover body 12. In specific implementation, the first cover body 11 and the second cover body 12 are respectively provided with a first groove and a second groove. After the first cover body 11 and the second cover body 12 are buckled and connected, the first groove and the second groove are correspondingly connected to form a first heat exchange chamber 114. In addition, a first partition plate 1144 and a second partition plate 1145 are provided in the first groove and the second groove. The first partition plate 1144 in the first groove and the first partition plate 1144 in the second groove are sealed and abutted, and the second partition plate 1145 in the first groove and the second partition plate 1145 in the second groove are sealed and abutted, so that the first heat exchange chamber 114 is divided into a first sub-chamber 1141, a second sub-chamber 1142 and a third sub-chamber 1143.

[0063] The connecting portion 1140 of this embodiment, as a preferred embodiment, includes a notch formed at the end of each partition plate, that is, a spacing is set between one end of each partition plate and the side wall of the first heat exchange chamber 114 at the corresponding position. The connecting portion 1140 adopts a notch structure, which has a simple structure and is also convenient for processing and preparing the connecting portion 1140. Moreover, the connecting portions 1140 on two adjacent partition plates are arranged in a staggered manner, that is, the connecting portion 1140 on the first partition plate 1144 is arranged at the lower end of the first partition plate 1144, and the connecting portion 1140 on the second partition plate 1145 is arranged at the upper end of the second partition plate 1145. Such an arrangement is conducive to extending the flow path of the coolant and improving the heat exchange effect of the bearing 20.

[0064] In addition, in this embodiment, the first end cover and the second end cover are respectively provided with a first connection hole 113 and a second connection hole 123, and the first end cover and the second end cover are screwed together through a connection member 10 that penetrates the first connection hole 113 and the second connection hole 123. The connection member 10 can be, for example, a bolt or a stud.

[0065] The transmission component housing end cover of this embodiment has a bearing mounting portion arranged on one side of the end cover body 1 and a first heat exchange chamber 114 arranged on the other side. As a result, the heat exchange fluid flowing through the first heat exchange chamber 114 can realize external heat exchange for the bearing 20, thereby improving the heat exchange effect of the bearing 20, ensuring that the bearing 20 is in suitable working conditions, and facilitating increasing the service life of the bearing 20.

[0066] Embodiment 2

[0067] This embodiment relates to a transmission assembly, which includes a transmission. The transmission housing is provided with an end cover for the transmission assembly housing of the first embodiment, and the transmission housing constitutes a transmission assembly housing.

[0068] Specifically, Figures 7 to 9 As shown, the multiple bearing mounting parts on the end cover are used to mount the bearing 20 at the end of the input shaft, the bearing 20 at the end of the intermediate shaft and the bearing 20 at the end of the output shaft in the transmission, that is, one end of the input shaft, the intermediate shaft and the output shaft are rotatably arranged on the end cover through the corresponding bearings 20. In a specific implementation, the end cover and the housing of the transmission can also be connected in a screw connection manner.

[0069] In addition, in this embodiment, the transmission assembly further includes a motor connected to the transmission, and a second heat exchange chamber 31 for exchanging heat for the motor stator is provided in the housing of the motor, and the second heat exchange chamber 31 is connected to the first heat exchange chamber 114. At this time, the second heat exchange chamber 31 is connected to the first heat exchange chamber 114, so that the bearing 20 and the motor stator can be heat exchanged together, making the heat exchange structure on the transmission more compact.

[0070] It should be pointed out that, in the present embodiment, the end cover for the transmission component housing may be provided on a transmission assembly having only a transmission, or may be provided on a transmission assembly integrating a motor and a transmission.

[0071] For the sake of distinction, the housing of the transmission is defined as the first housing 2, and the housing of the motor is defined as the second housing 3. The structure of the motor can refer to the structure in the prior art, wherein a cooling water jacket 301 is provided in the housing of the motor, i.e., the second housing 3, and the motor stator is installed in the cooling water jacket 301, and an annular cavity is formed between the second housing 3 and the cooling water jacket 301, which constitutes a second heat exchange cavity 31 for heat exchange of the motor stator. In addition, a liquid inlet 32 ​​and a liquid outlet 33 for communicating with the second heat exchange cavity 31 are also provided on the second housing 3.

[0072] For specific implementation, please refer to Figures 7 to 9 A connecting pipe 4 is provided between the outlet 122 of the first heat exchange chamber 114 and the liquid inlet 32 ​​of the second heat exchange chamber 31, and the two ends of the connecting pipe 4 are respectively connected to the outlet 122 of the first heat exchange chamber 114 and the liquid inlet 32 ​​of the second heat exchange chamber 31, thereby connecting the first heat exchange chamber 114 and the second heat exchange chamber 31. At this time, the coolant, i.e., the cooling water, is injected into the first sub-chamber 1141 through the inlet 121 of the first heat exchange chamber 114, and then successively passes through the second sub-chamber 1142 and the third sub-chamber 1143, and then flows into the second heat exchange chamber 31 through the outlet 122 of the first heat exchange chamber 114 and the connecting pipe 4, and then flows out from the liquid outlet 33 of the second heat exchange chamber 31, thereby realizing the successive cooling of each bearing 20 and the motor.

[0073] As a further preferred embodiment, in this embodiment, the first heat exchange chamber 114 and the second heat exchange chamber 31 are connected in series to the circulating water circuit 5 of the vehicle, so that the circulating water circuit 5 of the vehicle can be used to realize external heat exchange of the bearing 20 and the motor stator, thereby improving the heat exchange effect of the bearing 20 and the motor stator. Fig.10 As shown, on the basis that the first heat exchange chamber 114 is connected to the second heat exchange chamber 31 through the connecting pipe 4, the inlet 121 of the first heat exchange chamber 114 and the outlet 33 of the second heat exchange chamber 31 are respectively connected to the circulating water circuit 5 of the vehicle, so that the water on the circulating water circuit 5 can cool each bearing 20 and the motor stator, and can improve the cooling effect of each bearing 20 and the motor stator.

[0074] It should be noted that when the vehicle is a traditional fuel vehicle, the circulating water circuit 5 of the vehicle can be, for example, an engine cooling circuit. When the vehicle is a new energy vehicle, the circulating water circuit 5 of the vehicle can be, for example, a coolant circuit in a vehicle thermal management system.

[0075] The transmission assembly of this embodiment, by adopting the end cover for the transmission component housing of the first embodiment, can better exchange heat for the bearing 20 at the end of the transmission shaft in the transmission, ensure that the bearing 20 is in a better working environment, and can increase the service life of the bearing 20, which is beneficial to increasing the service life of the transmission assembly and has a very good use effect.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An end cover for a transmission assembly housing, characterized in that: It comprises an end cover body (1); A bearing mounting portion for mounting a bearing (20) is provided on one side of the end cover body (1) facing the inner cavity of the transmission assembly housing; A first heat exchange cavity (114) close to the bearing mounting portion is provided in the end cover body (1), and the heat exchange fluid flowing through the first heat exchange cavity (114) can perform heat exchange with the bearing (20) through the end cover body (1).

2. The end cover for the transmission assembly housing according to claim 1, characterized in that: The bearing mounting portion comprises a bearing chamber (100), wherein the bearing chamber (100) is arranged in a plurality at intervals on the end cover body (1), and the heat exchange fluid flowing through the first heat exchange cavity (114) can exchange heat for the bearings (20) in each bearing chamber (100) through the end cover body (1).

3. The end cover for the transmission assembly housing according to claim 2, characterized in that: A partition plate is provided in the first heat exchange chamber (114), and the partition plate divides the first heat exchange chamber (114) into a plurality of sub-chambers; The plurality of bearing chambers (100) are arranged in one-to-one correspondence with the plurality of sub-cavities.

4. The end cover for the transmission assembly housing according to claim 3, characterized in that: There are a plurality of partition plates, and each partition plate is provided with a connecting portion (1140) connecting the sub-cavities on both sides thereof, so that the heat exchange fluid can flow through each sub-cavity in sequence.

5. The end cover for the transmission assembly housing according to claim 4, characterized in that: Along the flow direction of the heat exchange fluid, the connecting portions (1140) on adjacent partition plates are arranged in a staggered manner.

6. The end cover for the transmission assembly housing according to claim 2, characterized in that: A portion of the end cover body (1) is arched in a direction along the inner cavity of the transmission component housing toward the first heat exchange cavity (114), and the bearing chamber (100) is formed on a side facing the inner cavity of the transmission component housing.

7. The end cover for a transmission assembly housing according to any one of claims 1 to 6, characterized in that: The end cover body (1) comprises a first cover body (11) and a second cover body (12) which are buckled and connected to each other, and the first heat exchange cavity (114) is formed between the first cover body (11) and the second cover body (12); The bearing mounting portion is arranged on the first cover body (11), and the inlet (121) and the outlet (122) of the first heat exchange chamber (114) are arranged on the second cover body (12).

8. A transmission assembly, characterized in that: It comprises a transmission, the housing of which is provided with an end cover for a transmission assembly housing as claimed in any one of claims 1 to 7, and the housing of the transmission constitutes the transmission assembly housing.

9. The transmission assembly according to claim 8, characterized in that: It also includes a motor connected to the transmission, wherein a second heat exchange cavity (31) for exchanging heat with the motor stator is provided in a housing of the motor, and the second heat exchange cavity (31) is connected to the first heat exchange cavity (114).

10. The transmission assembly according to claim 9, characterized in that: The first heat exchange chamber (114) and the second heat exchange chamber (31) are connected in series on a circulating water circuit (5) of a vehicle.

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