Supporting structure, gearbox and vehicle

Abstract

The utility model discloses a supporting structure, a gearbox and a vehicle, and the supporting structure comprises a shell assembly, a first mounting groove, a second mounting groove, a first connecting rod assembly and a second connecting rod assembly, one end of the input shaft extends into the first mounting groove; the ball bearing is arranged on the input shaft in a sleeving mode and located in the first mounting groove, and the peripheral wall of the outer ring of the ball bearing is spaced from the inner wall of the first mounting groove; and the anti-rotation piece is connected with the shell assembly, is matched with the outer ring of the ball bearing and is used for relatively fixing the outer ring of the ball bearing and the shell assembly in the circumferential direction of the ball bearing. The supporting structure provided by the utility model has the advantages of better stability and reliability and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission, and more specifically, to a supporting structure, a gearbox and a vehicle. Background Art

[0002] In the related art, when the supporting structure works at a relatively high speed, the bearings on the input shaft are prone to problems such as failure and damage, affecting normal use. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a supporting structure, which has good stability and reliability and a long service life.

[0004] Another object of the utility model is to provide a gearbox having the above-mentioned supporting structure.

[0005] Still another object of the utility model is to provide a vehicle having the above-mentioned gearbox.

[0006] The supporting structure according to an embodiment of the utility model includes: a housing assembly, on which a first mounting groove is provided; an input shaft, one end of which extends into the first mounting groove; a ball bearing, which is sleeved on the input shaft and located in the first mounting groove, and the outer peripheral wall of the outer ring of the ball bearing is spaced apart from the inner wall of the first mounting groove; an anti-rotation member, which is connected to the housing assembly and cooperates with the outer ring of the ball bearing, and is used to relatively fix the outer ring of the ball bearing and the housing assembly in the circumferential direction of the ball bearing.

[0007] According to the supporting structure of the embodiment of the utility model, one end of the input shaft extends into the first mounting groove of the housing assembly, the ball bearing is sleeved on the input shaft and located in the first mounting groove, the outer peripheral wall of the outer ring of the ball bearing is spaced apart from the inner wall of the first mounting groove, and the anti-rotation member is connected to the housing assembly and cooperates with the outer ring of the ball bearing, and is used to relatively fix the outer ring of the ball bearing and the housing assembly in the circumferential direction of the ball bearing, so that circumferential anti-rotation of the outer ring of the ball bearing can be realized, which is beneficial to improving the stability and reliability of the supporting structure, and enables the ball bearing to only bear axial loads, avoiding problems such as damage to the ball bearing caused by the transfer of radial loads received by the input shaft between the ball bearing and the housing assembly, and is beneficial to extending the service life of the supporting structure.

[0008] In addition, the supporting structure according to the above embodiment of the utility model may further have the following additional technical features:

[0009] According to the support structure of some embodiments of the present utility model, a limiting groove is provided on the outer ring of the ball bearing, and the anti-rotation member is located in the limiting groove; and / or, the support structure includes a baffle plate, the baffle plate is provided on one side in the axial direction of the ball bearing and is connected to the housing assembly, along the axial direction of the input shaft, the baffle plate abuts against the outer ring of the ball bearing, and the anti-rotation member is provided on the baffle plate.

[0010] According to some embodiments of the present utility model, a second mounting groove spaced apart from the first mounting groove is further provided on the housing assembly, the other end of the input shaft extends into the second mounting groove, and the support structure further includes: a first roller bearing and a second roller bearing, both the first roller bearing and the second roller bearing are sleeved on the input shaft and are provided in the second mounting groove.

[0011] According to some embodiments of the present utility model, the inner rings of the first roller bearing and the second roller bearing abut against each other, and the outer rings of the first roller bearing and the second roller bearing abut against each other; or, a first partition member is provided between the first roller bearing and the second roller bearing, and the first partition member abuts against the inner rings of the first roller bearing and the second roller bearing or abuts against the outer rings of the first roller bearing and the second roller bearing; or, a first partition member and a second partition member are provided between the first roller bearing and the second roller bearing, the first partition member is sleeved on the input shaft, the second partition member is sleeved outside the first partition member and is spaced from the first partition member, the first partition member abuts against the inner rings of the first roller bearing and the second roller bearing, and the second partition member abuts against the outer rings of the first roller bearing and the second roller bearing.

[0012] According to some embodiments of the present utility model, a second mounting groove spaced apart from the first mounting groove is further provided on the housing assembly, the other end of the input shaft extends into the second mounting groove, and the support structure further includes: a first roller bearing and a second roller bearing, both the first roller bearing and the second roller bearing are sleeved on the input shaft and one of them is provided in the second mounting groove, and the other is provided in the first mounting groove.

[0013] According to some embodiments of the present utility model, when the first roller bearing is located in the first mounting groove, the inner ring of the ball bearing abuts against the inner ring of the first roller bearing, and the outer ring of the ball bearing abuts against the outer ring of the first roller bearing; or, a first spacer is provided between the ball bearing and the first roller bearing, and the first spacer abuts against the inner ring of the ball bearing and the inner ring of the first roller bearing or abuts against the outer ring of the ball bearing and the outer ring of the first roller bearing; or, a first spacer and a second spacer are provided between the ball bearing and the first roller bearing, the first spacer is sleeved on the input shaft, the second spacer is sleeved outside the first spacer and is spaced apart from the first spacer, the first spacer abuts against the inner ring of the ball bearing and the inner ring of the first roller bearing, and the second spacer abuts against the outer ring of the ball bearing and the outer ring of the first roller bearing.

[0014] According to some embodiments of the present utility model, when the first roller bearing is located in the first mounting groove, the first roller bearing is located on a side of the ball bearing away from the second mounting groove, and the supporting structure further includes: a blocking member, the blocking member is sleeved on the input shaft and is threadedly connected to the input shaft, the blocking member is located on a side of the first roller bearing away from the ball bearing, and the blocking member abuts against the inner ring of the first roller bearing.

[0015] According to some embodiments of the present utility model, the ball bearing is a four-point contact ball bearing; and / or, at least one of the first roller bearing and the second roller bearing is a cylindrical roller bearing.

[0016] The transmission according to an embodiment of the present utility model includes the supporting structure according to an embodiment of the present utility model.

[0017] For the transmission according to an embodiment of the present utility model, one end of the input shaft extends into the first mounting groove of the housing assembly, the ball bearing is sleeved on the input shaft and is located in the first mounting groove, the outer peripheral wall of the outer ring of the ball bearing is spaced apart from the inner wall of the first mounting groove, the anti-rotation member is connected to the housing assembly and cooperates with the outer ring of the ball bearing, and is used to relatively fix the outer ring of the ball bearing and the housing assembly in the circumferential direction of the ball bearing, so as to realize circumferential anti-rotation of the outer ring of the ball bearing, which is beneficial to improving the stability and reliability of the supporting structure, and enables the ball bearing to only bear axial loads, avoiding problems such as damage to the ball bearing easily caused by the transmission of the radial load received by the input shaft between the ball bearing and the housing assembly, and is beneficial to extending the service life of the supporting structure.

[0018] The vehicle according to an embodiment of the present utility model includes the transmission according to an embodiment of the present utility model.

[0019] For a vehicle according to an embodiment of the present utility model, one end of an input shaft extends into a first installation groove of a housing assembly. A ball bearing is sleeved on the input shaft and is located within the first installation groove. The outer peripheral wall of the outer ring of the ball bearing is spaced apart from the inner wall of the groove of the first installation groove. The anti-rotation member is connected to the housing assembly and cooperates with the outer ring of the ball bearing, and is used to relatively fix the outer ring of the ball bearing and the housing assembly in the circumferential direction of the ball bearing, so as to achieve circumferential anti-rotation of the outer ring of the ball bearing, which is beneficial to improving the stability and reliability of the support structure, and enables the ball bearing to only bear axial loads, avoiding problems such as damage to the ball bearing easily caused by the transmission of radial loads received by the input shaft between the ball bearing and the housing assembly, and is beneficial to extending the service life of the support structure.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Brief Description of the Drawings

[0021] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic structural diagram of a support structure according to some embodiments of the present utility model;

[0023] Figure 2 is a schematic structural diagram of a support structure according to other embodiments of the present utility model;

[0024] Figure 3 is a schematic structural diagram of a ball bearing, an anti-rotation member, and a baffle according to an embodiment of the present utility model.

[0025] Reference Signs:

[0026] 100, support structure;

[0027] 10, housing assembly; 11, first installation groove; 12, second installation groove; 101, first housing; 102, second housing;

[0028] 20, input shaft; 21, gear;

[0029] 30, ball bearing; 31, limiting groove; 32, outer ring of ball bearing 30; 33, inner ring of ball bearing 30;

[0030] 40, anti-rotation member;

[0031] 50, baffle; 51, connection hole; 52, fastener;

[0032] 61. First roller bearing; 62. Second roller bearing; 611. Inner ring of the first roller bearing 61; 612. Outer ring of the first roller bearing 61; 621. Inner ring of the second roller bearing 62; 622. Outer ring of the second roller bearing 62;

[0033] 71. First spacer; 72. Second spacer;

[0034] 80. Blocking member. Detailed implementation mode

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship 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 thus should not be construed as a limitation of the present invention.

[0037] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features. The meaning of "a plurality" is two or more. The first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. The first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature.

[0038] The support structure 100 according to an embodiment of the present invention will be described below with reference to the drawings.

[0039] Refer to Figures 1 - 3 As shown, the support structure 100 according to an embodiment of the present invention may include: a housing assembly 10, an input shaft 20, and a ball bearing 30.

[0040] Specifically, a first mounting groove 11 is provided on the housing assembly 10. One end of the input shaft 20 extends into the first mounting groove 11. The ball bearing 30 is sleeved on the input shaft 20, and the ball bearing 30 is located within the first mounting groove 11. Through the ball bearing 30, the support requirement of the input shaft 20 within the housing assembly 10 can be achieved. Moreover, due to the small frictional resistance of the ball bearing 30, the stable operation of mechanical equipment (such as a gearbox, etc.) at a relatively high rotational speed can be ensured, meeting the support requirement for high-speed rotation, which is conducive to improving the performance of the entire mechanical equipment.

[0041] In addition, as Figures 1 - 3 shown, the outer peripheral wall of the outer ring 32 of the ball bearing 30 is spaced apart from the inner wall of the groove of the first mounting groove 11, that is, the outer ring 32 of the ball bearing 30 does not contact the inner wall of the groove of the first mounting groove 11. The support structure 100 further includes an anti-rotation member 40. The anti-rotation member 40 is connected to the housing assembly 10, and the anti-rotation member 40 cooperates with the outer ring 32 of the ball bearing 30. The anti-rotation member 40 can relatively fix the outer ring 32 of the ball bearing 30 and the housing assembly 10 in the circumferential direction of the ball bearing 30, preventing the outer ring 32 of the ball bearing 30 from rotating with the inner ring 33 of the ball bearing 30, realizing the requirement of circumferential anti-rotation of the outer ring 32 of the ball bearing 30, which is beneficial to improving the stability and reliability of the support structure 100.

[0042] At the same time, since the outer peripheral wall of the outer ring 32 of the ball bearing 30 is spaced apart from the inner wall of the groove of the first mounting groove 11, the ball bearing 30 only bears axial loads, avoiding problems such as damage to the ball bearing 30 caused by the transfer of radial loads received by the input shaft 20 between the ball bearing 30 and the housing assembly 10, which is beneficial to extending the service life of the support structure 100.

[0043] In some embodiments, as Figures 1 - 2 shown, a gear 21 is sleeved on the input shaft 20. Through the gear 21, the rotation of the input shaft 20 can be transmitted to meet the required driving requirements. For example, the gear 21 can be a helical gear, which can meet the requirements of Noise, Vibration, Harshness (NVH).

[0044] According to the support structure 100 of the embodiments of the present utility model, one end of the input shaft 20 extends into the first installation groove 11 of the housing assembly 10. The ball bearing 30 is sleeved on the input shaft 20 and is located in the first installation groove 11. The outer peripheral wall of the outer ring 32 of the ball bearing 30 is spaced apart from the groove inner wall of the first installation groove 11. The anti-rotation member 40 is connected to the housing assembly 10 and cooperates with the outer ring 32 of the ball bearing 30 to relatively fix the outer ring 32 of the ball bearing 30 and the housing assembly 10 in the circumferential direction of the ball bearing 30, which can realize circumferential anti-rotation of the outer ring 32 of the ball bearing 30, is beneficial to improving the stability and reliability of the support structure 100, and enables the ball bearing 30 to only bear axial loads, avoiding problems such as damage to the ball bearing 30 caused by the transfer of radial loads received by the input shaft 20 between the ball bearing 30 and the housing assembly 10, and is beneficial to extending the service life of the support structure 100.

[0045] In some embodiments of the present utility model, as Figure 3 shown, a limiting groove 31 is provided on the outer ring 32 of the ball bearing 30. The anti-rotation member 40 is located in the limiting groove 31. By the cooperation of the limiting member and the limiting groove 31, the limiting of the outer ring 32 of the ball bearing 30 can be realized, ensuring the relative fixation of the outer ring 32 of the ball bearing 30 and the housing assembly 10 in the circumferential direction of the ball bearing 30, and the structure is simple, facilitating processing and manufacturing, and is beneficial to reducing production costs.

[0046] According to some embodiments of the present utility model, as Figures 1 - 3 shown, the support structure 100 further includes a baffle 50. The baffle 50 is provided on one side in the axial direction of the ball bearing 30 (for example Figure 1 the right side shown in Figure 1 ), and the baffle 50 is connected to the housing assembly 10, enabling the fixation of the baffle 50. Along the axial direction of the input shaft 20 (for example the left-right direction shown in

[0047] ), the baffle 50 abuts against the outer ring 32 of the ball bearing 30, enabling the baffle 50 to axially limit the outer ring 32 of the ball bearing 30, ensuring reliable axial limitation of the outer ring 32 of the ball bearing 30, improving the axial stability of the support structure 100, and the anti-rotation member 40 is provided on the baffle 50, ensuring a compact structure and facilitating assembly.

[0047] It should be noted that for the convenience of description, the orientations such as "left-right direction" in the present utility model are based on the orientation relationship shown in the drawings, rather than the limitation of the orientation in the actual application process.

[0048] In some embodiments, as Figures 1 - 3As shown, the baffle 50 is provided with connection holes 51, and the fasteners 52 are inserted through the connection holes 51 to be connected with the housing assembly 10, which can fix the baffle 50 on the housing assembly 10, ensure reliable connection between the baffle 50 and the housing assembly 10, is conducive to improving the assembly efficiency, and is convenient for disassembly. For example, the fastener 52 can be a bolt.

[0049] In some embodiments, as Figure 3 shown, the baffle 50 is formed in a ring shape, the input shaft 20 is inserted through the baffle 50, and the connection holes 51 are multiple and arranged at intervals in the circumferential direction of the baffle 50. By respectively inserting multiple fasteners 52 through the multiple connection holes 51 to be connected with the housing assembly 10, the connection between multiple different positions of the baffle 50 and the housing assembly 10 can be realized, ensure reliable fixation of the baffle 50 on the housing assembly 10, avoid loosening of the baffle 50, and thus ensure reliable axial limit of the outer ring 32 of the ball bearing 30.

[0050] In the embodiments of the present utility model, the number of the connection holes 51 can be flexibly set according to the actual situation. For example, the connection holes 51 can be as Figure 3 shown, six, or can also be two, three, four, five, seven or more, which are all within the protection scope of the present utility model.

[0051] In some embodiments, the anti-rotation member 40 and the baffle 50 can be connected by interference fit or welding, both of which can ensure reliable fixation of the anti-rotation member 40 on the baffle 50, avoid movement of the anti-rotation member 40, and thus ensure reliable circumferential limit of the outer ring 32 of the ball bearing 30 by the anti-rotation member 40.

[0052] In some embodiments of the present utility model, as Figures 1 - 3 shown, there are multiple anti-rotation members 40, and the multiple anti-rotation members 40 are arranged at intervals in the circumferential direction of the input shaft 20. Through the multiple anti-rotation members 40, circumferential limits of multiple different positions of the outer ring 32 of the ball bearing 30 can be realized, ensure reliable relative fixation of the outer ring 32 of the ball bearing 30 and the housing assembly 10 in the circumferential direction of the ball bearing 30, is conducive to improving the stability and reliability of the support structure 100, and the multiple anti-rotation members 40 can disperse the load, which is conducive to extending the service life of the support structure 100.

[0053] In the embodiments of the present utility model, the number of the anti-rotation members 40 can be flexibly set according to the actual situation. For example, the anti-rotation members 40 can be as Figure 3 shown, two, or can also be three, four, five, six or more, which are all within the protection scope of the present utility model.

[0054] According to some embodiments of the present utility model, the ball bearing 30 can be a four-point contact ball bearing. The four-point contact ball bearing has a relatively high load-bearing capacity and good stability. When operating at a relatively high rotational speed, the four-point contact ball bearing can withstand a large axial load, meeting the requirements of high precision and high reliability.

[0055] In the related art, when a low-speed motor drives the input shaft to rotate, the peak rotational speed of the low-speed motor is less than 3500 rpm. A gear (such as a spur gear or a helical gear) is provided on the input shaft. One end of the two axial ends of the input shaft can be provided with a deep groove ball bearing and the other end can be provided with a cylindrical roller bearing, or cylindrical roller bearings are respectively provided at both axial ends of the input shaft, or tapered roller bearings are respectively provided at both axial ends of the input shaft, all of which can realize the support of the input shaft.

[0056] However, when a high-speed motor drives the input shaft to rotate, the peak torque of the high-speed motor is greater than or equal to 800 Nm, and the peak rotational speed of the high-speed motor is 8000 rpm - 10000 rpm. In order to meet the requirements of Noise, Vibration, Harshness (NVH), a helical gear is provided on the input shaft. Thus, the bearings on the input shaft need to bear a helical gear load greater than 800 Nm and a rotational speed greater than 8000 rpm. Conventional bearing support schemes are difficult to meet the requirements. If a bearing with a greater load-bearing capacity is used, the limit rotational speed of this bearing will be reduced, and it cannot simultaneously meet the multiple requirements of bearing radial force and axial force and rotational speed. If bearings are custom-developed for the requirements of heavy load and high speed, the development cycle and production cost will be increased.

[0057] Therefore, in some embodiments of the present utility model, a second mounting groove 12 is further provided on the housing assembly 10. The second mounting groove 12 is spaced apart from the first mounting groove 11. The other end of the input shaft 20 extends into the second mounting groove 12. The support structure 100 further includes a first roller bearing 61 and a second roller bearing 62. Both the first roller bearing 61 and the second roller bearing 62 are sleeved on the input shaft 20, and both the first roller bearing 61 and the second roller bearing 62 are provided in the second mounting groove 12, which can realize the dual support of both axial ends of the input shaft 20, enhancing the overall rigidity and load-bearing capacity of the support structure 100. Moreover, the radial load received by the input shaft 20 is borne by the first roller bearing 61 and the second roller bearing 62. Through the combination of the ball bearing 30, the first roller bearing 61, and the second roller bearing 62, the requirements of the input shaft 20 of the support structure 100 for large torque and high rotational speed can be met, avoiding the custom development of bearings, which is beneficial to reducing the development cost and technical risk and shortening the development cycle.

[0058] In some embodiments, such as Figure 1 And Figure 2As shown, the housing assembly 10 includes a first housing 101 and a second housing 102. A first mounting groove 11 is provided on the first housing 101, and a second mounting groove 12 is provided on the second housing 102. The connection of the first housing 101 and the second housing 102 can form the housing assembly 10, which is convenient for manufacturing the housing assembly 10, reducing the structural complexity, and facilitating the installation of the structures inside the housing assembly 10, which is beneficial to improving the assembly efficiency.

[0059] In an embodiment of the present invention, the specific limiting manner of the first roller bearing 61 and the second roller bearing 62 can be set according to the actual situation.

[0060] For example, in some embodiments, such as Figure 1 As shown, the inner ring 611 of the first roller bearing 61 abuts against the inner ring 621 of the second roller bearing 62, and the outer ring 612 of the first roller bearing 61 abuts against the outer ring 622 of the second roller bearing 62, which can increase the structural stiffness of the support structure 100, avoid problems such as deformation, is beneficial to improving the load-bearing capacity and service life of the support structure 100, and can meet different assembly requirements, for example, can meet the assembly requirement that the first roller bearing 61 and the second roller bearing 62 have the same size.

[0061] Or, as Figure 2 As shown, a first spacer 71 is provided between the first roller bearing 61 and the second roller bearing 62. The first spacer 71 abuts against the inner ring 611 of the first roller bearing 61 and the inner ring 621 of the second roller bearing 62, or the first spacer 71 abuts against the outer ring 612 of the first roller bearing 61 and the outer ring 622 of the second roller bearing 62. Through the first spacer 71, the inner ring 611 of the first roller bearing 61 and the inner ring 621 of the second roller bearing 62 or the outer ring 612 of the first roller bearing 61 and the outer ring 622 of the second roller bearing 62 can be separated, and the inner ring 611 of the first roller bearing 61 and the inner ring 621 of the second roller bearing 62 or the outer ring 612 of the first roller bearing 61 and the outer ring 622 of the second roller bearing 62 can be axially limited, ensuring the working reliability of the first roller bearing 61 and the second roller bearing 62, and can meet different assembly requirements, for example, can meet the assembly requirements that the first roller bearing 61 and the second roller bearing 62 have different sizes or cannot be directly adjacent for installation.

[0062] Or, as Figure 2As shown, a first spacer 71 and a second spacer 72 are provided between the first roller bearing 61 and the second roller bearing 62. The first spacer 71 is sleeved on the input shaft 20, the second spacer 72 is sleeved outside the first spacer 71, and the second spacer 72 is spaced from the first spacer 71. The first spacer 71 abuts against the inner rings 611 of the first roller bearing 61 and the inner ring 621 of the second roller bearing 62, and can achieve the partitioning and limiting of the inner ring 611 of the first roller bearing 61 and the inner ring 621 of the second roller bearing 62. The second spacer 72 abuts against the outer rings 612 of the first roller bearing 61 and the outer ring 622 of the second roller bearing 62, and can achieve the partitioning and limiting of the outer ring 612 of the first roller bearing 61 and the outer ring 622 of the second roller bearing 62.

[0063] Thus, through the first spacer 71 and the second spacer 72, axial limiting of the inner ring 611 of the first roller bearing 61 and the inner ring 621 of the second roller bearing 62, and the outer ring 612 of the first roller bearing 61 and the outer ring 622 of the second roller bearing 62 can be simultaneously achieved, ensuring the working reliability of the first roller bearing 61 and the second roller bearing 62, and meeting different assembly requirements. For example, it can meet the assembly requirements when the sizes of the first roller bearing 61 and the second roller bearing 62 are different or they cannot be directly adjacent.

[0064] According to some embodiments of the present invention, as Figure 1 shown in Figure 2 As shown, a second mounting groove 12 is further provided on the housing assembly 10. The second mounting groove 12 is spaced from the first mounting groove 11. The other end of the input shaft 20 extends into the second mounting groove 12. The support structure 100 further includes a first roller bearing 61 and a second roller bearing 62. Both the first roller bearing 61 and the second roller bearing 62 are sleeved on the input shaft 20, and one of them is disposed in the second mounting groove 12 and the other is disposed in the first mounting groove 11. That is, the first roller bearing 61 can be disposed in the second mounting groove 12 and the second roller bearing 62 can be disposed in the first mounting groove 11, or the second roller bearing 62 can be disposed in the second mounting groove 12 and the first roller bearing 61 can be disposed in the first mounting groove 11, which can achieve double support for both axial ends of the input shaft 20, enhance the overall rigidity and load-bearing capacity of the support structure 100, and the radial load borne by the input shaft 20 is borne by the first roller bearing 61 and the second roller bearing 62. Through the combination of the ball bearing 30, the first roller bearing 61 and the second roller bearing 62, the requirements of the input shaft 20 of the support structure 100 for large torque and high speed can be met, custom-developed bearings are avoided, which is beneficial to reducing the development cost and technical risks and shortening the development cycle.

[0065] In the embodiments of the present invention, the specific limiting manner of the first roller bearing 61 and the second roller bearing 62 can be set according to the actual situation.

[0066] For example, in some embodiments, such as Figure 1 As shown, when the first roller bearing 61 is located in the first mounting groove 11, the inner ring 33 of the ball bearing 30 abuts against the inner ring 611 of the first roller bearing 61, and the outer ring 32 of the ball bearing 30 abuts against the outer ring 612 of the first roller bearing 61. This can increase the structural stiffness of the support structure 100, avoid problems such as deformation, is beneficial to improving the load-bearing capacity and service life of the support structure 100, and can meet different assembly requirements. For example, it can meet the assembly requirement that the first roller bearing 61 and the ball bearing 30 have the same size.

[0067] Or, as Figure 2 As shown, a first spacer 71 is provided between the ball bearing 30 and the first roller bearing 61. The first spacer 71 abuts against the inner ring 33 of the ball bearing 30 and the inner ring 611 of the first roller bearing 61, or the first spacer 71 abuts against the outer ring 32 of the ball bearing 30 and the outer ring 612 of the first roller bearing 61. Through the first spacer 71, the inner ring 33 of the ball bearing 30 and the inner ring 611 of the first roller bearing 61 or the outer ring 32 of the ball bearing 30 and the outer ring 612 of the first roller bearing 61 can be separated, and the inner ring 611 of the first roller bearing 61 and the inner ring 33 of the ball bearing 30 or the outer ring 612 of the first roller bearing 61 and the outer ring 32 of the ball bearing 30 can be axially limited, ensuring the working reliability of the first roller bearing 61 and the ball bearing 30, and can meet different assembly requirements. For example, it can meet the assembly requirements that the first roller bearing 61 and the ball bearing 30 have different sizes or cannot be directly adjacent for installation.

[0068] Or, as Figure 2 As shown, a first spacer 71 and a second spacer 72 are provided between the ball bearing 30 and the first roller bearing 61. The first spacer 71 is sleeved on the input shaft 20, the second spacer 72 is sleeved outside the first spacer 71, and the second spacer 72 is spaced from the first spacer 71. The first spacer 71 abuts against the inner ring 33 of the ball bearing 30 and the inner ring 611 of the first roller bearing 61, which can achieve the separation and limitation of the inner ring 611 of the first roller bearing 61 and the inner ring 33 of the ball bearing 30. The second spacer 72 abuts against the outer ring 32 of the ball bearing 30 and the outer ring 612 of the first roller bearing 61, which can achieve the separation and limitation of the outer ring 612 of the first roller bearing 61 and the outer ring 32 of the ball bearing 30.

[0069] Thus, through the first spacer 71 and the second spacer 72, axial limits can be simultaneously achieved for the inner ring 611 of the first roller bearing 61 and the inner ring 33 of the ball bearing 30, as well as for the outer ring 612 of the first roller bearing 61 and the outer ring 32 of the ball bearing 30, ensuring the working reliability of the first roller bearing 61 and the ball bearing 30 and meeting different assembly requirements. For example, it can meet the assembly requirements where the first roller bearing 61 and the ball bearing 30 have different sizes or cannot be directly adjacent for installation.

[0070] In some embodiments of the present utility model, as Figure 1 shown in Figure 2 when the first roller bearing 61 is located in the first mounting groove 11, the first roller bearing 61 is located on the side of the ball bearing 30 away from the second mounting groove 12 (for example, Figure 1 the left side as shown in Figure 1 ), the support structure 100 further includes a stopper 80. The stopper 80 is sleeved on the input shaft 20 and is located on the side of the first roller bearing 61 away from the ball bearing 30 (for example,

[0071] the left side as shown in

[0072] ). The stopper 80 abuts against the inner ring 611 of the first roller bearing 61, enabling the stopper 80 to axially limit the inner ring 611 of the first roller bearing 61, ensuring reliable axial limitation of the inner ring 611 of the first roller bearing 61 and improving the axial stability of the support structure 100. In addition, the stopper 80 is threadedly connected to the input shaft 20, ensuring reliable connection between the stopper 80 and the input shaft 20, thereby ensuring reliable limitation of the inner ring 611 of the first roller bearing 61 and being convenient for installation and disassembly, which is beneficial to improving the assembly efficiency. For example, the stopper 80 can be a nut, with a simple structure and beneficial for reducing production costs.

[0071] According to some embodiments of the present utility model, at least one of the first roller bearing 61 and the second roller bearing 62 is a cylindrical roller bearing, that is, the first roller bearing 61 can be a cylindrical roller bearing, or the second roller bearing 62 can be a cylindrical roller bearing, or both the first roller bearing 61 and the second roller bearing 62 can be cylindrical roller bearings. Cylindrical roller bearings have a high load-bearing capacity and good anti-impact performance, can withstand large radial loads and impacts, and meet the required usage needs.

[0072] The transmission according to an embodiment of the present utility model includes the support structure 100 according to an embodiment of the present utility model. Since the support structure 100 according to an embodiment of the present utility model has the above beneficial technical effects, for the transmission according to an embodiment of the present utility model, one end of the input shaft 20 extends into the first installation groove 11 of the housing assembly 10, the ball bearing 30 is sleeved on the input shaft 20 and is located in the first installation groove 11, the outer peripheral wall of the outer ring 32 of the ball bearing 30 is spaced apart from the inner wall of the groove of the first installation groove 11, the anti-rotation member 40 is connected to the housing assembly 10 and cooperates with the outer ring 32 of the ball bearing 30, and is used to relatively fix the outer ring 32 of the ball bearing 30 and the housing assembly 10 in the circumferential direction of the ball bearing 30, so as to be able to achieve circumferential anti-rotation of the outer ring 32 of the ball bearing 30, which is beneficial to improving the stability and reliability of the support structure 100, and enables the ball bearing 30 to only bear axial loads, avoiding problems such as damage to the ball bearing 30 easily caused by the transmission of the radial load received by the input shaft 20 between the ball bearing 30 and the housing assembly 10, and is beneficial to extending the service life of the support structure 100.

[0073] The vehicle according to an embodiment of the present utility model includes the transmission according to an embodiment of the present utility model. Since the transmission according to an embodiment of the present utility model has the above beneficial technical effects, for the vehicle according to an embodiment of the present utility model, one end of the input shaft 20 extends into the first installation groove 11 of the housing assembly 10, the ball bearing 30 is sleeved on the input shaft 20 and is located in the first installation groove 11, the outer peripheral wall of the outer ring 32 of the ball bearing 30 is spaced apart from the inner wall of the groove of the first installation groove 11, the anti-rotation member 40 is connected to the housing assembly 10 and cooperates with the outer ring 32 of the ball bearing 30, and is used to relatively fix the outer ring 32 of the ball bearing 30 and the housing assembly 10 in the circumferential direction of the ball bearing 30, so as to be able to achieve circumferential anti-rotation of the outer ring 32 of the ball bearing 30, which is beneficial to improving the stability and reliability of the support structure 100, and enables the ball bearing 30 to only bear axial loads, avoiding problems such as damage to the ball bearing 30 easily caused by the transmission of the radial load received by the input shaft 20 between the ball bearing 30 and the housing assembly 10, and is beneficial to extending the service life of the support structure 100.

[0074] Wherein, the vehicle can be a new energy heavy truck, but is not limited thereto.

[0075] The other components and operations of the support structure 100, the transmission and the vehicle according to an embodiment of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0076] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0077] In the description of this specification, the descriptions referring to the terms "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0078] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A support structure, characterized in that, Comprising: A housing assembly, on which a first mounting groove is provided; An input shaft, one end of which extends into the first mounting groove; A ball bearing, which is sleeved on the input shaft and located in the first mounting groove, and the outer peripheral wall of the outer ring of the ball bearing is spaced apart from the inner wall of the groove of the first mounting groove; An anti-rotation member, which is connected to the housing assembly and cooperates with the outer ring of the ball bearing, and is used to relatively fix the outer ring of the ball bearing and the housing assembly in the circumferential direction of the ball bearing.

2. The support structure according to claim 1, characterized in that A limiting groove is provided on the outer ring of the ball bearing, and the anti-rotation member is located in the limiting groove; And / or, the supporting structure includes a baffle, the baffle is arranged on one side in the axial direction of the ball bearing and is connected to the housing assembly, along the axial direction of the input shaft, the baffle abuts against the outer ring of the ball bearing, and the anti-rotation member is arranged on the baffle.

3. The support structure according to claim 1, characterized in that, The housing assembly is further provided with a second mounting groove spaced apart from the first mounting groove, the other end of the input shaft extends into the second mounting groove, and the supporting structure further includes: A first roller bearing and a second roller bearing, both of which are sleeved on the input shaft and arranged in the second mounting groove.

4. The support structure according to claim 3, characterized in that The inner rings of the first roller bearing and the second roller bearing abut against each other, and the outer rings of the first roller bearing and the second roller bearing abut against each other; Or, a first spacer is provided between the first roller bearing and the second roller bearing, and the first spacer abuts against the inner rings of the first roller bearing and the second roller bearing or abuts against the outer rings of the first roller bearing and the second roller bearing; Or, a first spacer and a second spacer are provided between the first roller bearing and the second roller bearing, the first spacer is sleeved on the input shaft, the second spacer is sleeved outside the first spacer and is spaced apart from the first spacer, the first spacer abuts against the inner rings of the first roller bearing and the second roller bearing, and the second spacer abuts against the outer rings of the first roller bearing and the second roller bearing.

5. The support structure according to claim 1, characterized in that, The housing assembly is further provided with a second mounting groove spaced apart from the first mounting groove, the other end of the input shaft extends into the second mounting groove, and the supporting structure further includes: A first roller bearing and a second roller bearing, both of which are sleeved on the input shaft, and one of them is arranged in the second mounting groove and the other is arranged in the first mounting groove.

6. The support structure according to claim 5, characterized in that, When the first roller bearing is located in the first mounting groove, the inner ring of the ball bearing and the inner ring of the first roller bearing abut against each other, and the outer ring of the ball bearing and the outer ring of the first roller bearing abut against each other; Or, a first spacer is provided between the ball bearing and the first roller bearing, and the first spacer abuts against the inner rings of the ball bearing and the first roller bearing or abuts against the outer rings of the ball bearing and the first roller bearing; Alternatively, a first spacer and a second spacer are provided between the ball bearing and the first roller bearing. The first spacer is sleeved on the input shaft, the second spacer is sleeved outside the first spacer and is spaced from the first spacer. The first spacer abuts against the inner ring of the ball bearing and the inner ring of the first roller bearing, and the second spacer abuts against the outer ring of the ball bearing and the outer ring of the first roller bearing.

7. The support structure according to claim 5, characterized in that, When the first roller bearing is located in the first mounting groove, the first roller bearing is located on a side of the ball bearing away from the second mounting groove. The support structure further includes: A stopper, which is sleeved on the input shaft and is threadedly connected to the input shaft. The stopper is located on a side of the first roller bearing away from the ball bearing, and the stopper abuts against the inner ring of the first roller bearing.

8. The support structure according to any one of claims 3-7, characterized in that, The ball bearing is a four-point contact ball bearing; And / or, at least one of the first roller bearing and the second roller bearing is a cylindrical roller bearing.

9. A transmission, characterized in that, Comprising the support structure according to any one of claims 1-8.

10. A vehicle, characterized in that, Comprising the gearbox according to claim 9.

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