Driving assembly and vehicle

Abstract

The utility model discloses a driving assembly and a vehicle. The driving assembly comprises a brake disc connecting shaft and a brake disc mounting seat, the brake disc mounting seat is rotationally connected with the brake disc connecting shaft through a brake disc bearing, and a cooling channel is formed in the brake disc mounting seat. According to the driving assembly provided by the embodiment of the utility model, the cooling channel arranged on the brake disc mounting seat can exchange heat with the brake disc mounting seat to cool the brake disc mounting seat and the brake disc bearing, so that the service life of the driving assembly is prolonged, the product quality is improved, and the safety and the operation reliability in the use process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a drive assembly and a vehicle. Background Art

[0002] The drive assembly includes a motor, bearings and brake discs. When the motor is running, the heat generated by the motor and brake disc will be transferred to the bearings, and the bearings will generate heat due to friction. As an important part of the drive assembly, ensuring the performance of the bearings is a prerequisite for the stable operation of the drive assembly. However, during the operation of the drive assembly, the bearing temperature rises. Long-term high-temperature operation of the bearing will reduce the service life of the drive assembly and may even cause safety problems. Therefore, improving the heat dissipation performance of the bearing is of great significance to the reliable operation of the drive assembly. Utility Model Content

[0003] The utility model aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the utility model provides a drive assembly that can dissipate heat efficiently and improve heat dissipation performance.

[0004] The utility model also provides a vehicle with the driving assembly.

[0005] According to the driving assembly of the embodiment of the utility model, it includes a brake disc connecting shaft and a brake disc mounting seat, the brake disc mounting seat is rotatably connected to the brake disc connecting shaft via a brake disc bearing, and a cooling channel is provided inside the brake disc mounting seat.

[0006] According to the drive assembly of the embodiment of the utility model, the cooling channel arranged on the brake disc mounting seat can exchange heat with the brake disc mounting seat, cool the brake disc mounting seat and the brake disc bearing, extend the service life of the drive assembly, improve product quality, and improve safety during use and operational reliability.

[0007] In some embodiments, the drive assembly also includes: a main shaft, a motor end cover and a brake disc, the motor end cover having an end cover hole for the main shaft to pass through, the end cover hole and the main shaft being rotatably connected via an end cover bearing, and the brake disc mounting seat being mounted on the motor end cover; the brake disc is located on a side of the brake disc mounting seat away from the motor end cover, the brake disc is mounted on the brake disc connecting shaft, and the brake disc connecting shaft is mounted on the main shaft.

[0008] In some embodiments, a closed lubrication and cooling cavity is formed between the brake disc mounting base and the motor end cover, the end cover bearing and the brake disc bearing are both located in the lubrication and cooling cavity, and the end cover bearing and the brake disc bearing are both in contact with the lubricating oil in the lubrication and cooling cavity.

[0009] In some embodiments, lubricating grease is provided at both the end cover bearing and the brake disc bearing.

[0010] In some embodiments, a first clamping member and a first pressure ring are further provided in the lubrication and cooling cavity. The first clamping member is connected and fixed to the motor end cover by a first fastener. The first clamping member presses the outer ring of the end cover bearing to the motor end cover. The first pressure ring is sleeved on the main shaft and presses the inner ring of the end cover bearing to the shoulder of the main shaft.

[0011] In some embodiments, the end cover hole and the main shaft are sealed by a first oil seal, and the first oil seal is arranged on a side of the end cover bearing away from the lubrication and cooling cavity.

[0012] In some embodiments, the brake disc connecting shaft is connected to the side of the brake disc facing the motor end cover, and the brake disc connecting shaft is sleeved on the end of the main shaft, the brake disc mounting seat has a mounting seat hole, and the brake disc connecting shaft passes through the mounting seat hole.

[0013] In some embodiments, the mounting seat hole and the brake disc connecting shaft are sealed by a second oil seal, and the second oil seal is arranged on a side of the brake disc bearing away from the lubrication and cooling cavity.

[0014] In some embodiments, a second clamping piece and a second pressure ring are further provided in the lubrication and cooling cavity, and the second clamping piece is connected and fixed to the brake disc mounting seat by a second fastener, and the second clamping piece presses the outer ring of the brake disc bearing to the brake disc mounting seat, and the second pressure ring is sleeved on the brake disc connecting shaft and presses the inner ring of the brake disc bearing to the shoulder of the brake disc connecting shaft.

[0015] In some embodiments, the brake disc mounting seat includes a mounting seat connecting sleeve, the motor end cover has an end cover connecting hole, the mounting seat connecting sleeve is sleeved in the end cover connecting hole, and a seal is provided at the connection between the mounting seat connecting sleeve and the end cover connecting hole.

[0016] In some embodiments, the drive assembly further includes a motor housing, the motor end cover is connected and fixed to the motor housing via fasteners, and the brake disc mounting seat is located on a side of the motor end cover facing away from the motor housing.

[0017] The vehicle according to the embodiment of the second aspect of the utility model comprises the drive assembly according to the embodiment of the first aspect of the utility model.

[0018] According to the vehicle of the embodiment of the utility model, by adopting the above-mentioned drive assembly, its drive assembly can cool the end cover bearing and the brake disc bearing, extend the service life, improve the safety during use and the reliability of operation, which is beneficial to reduce the maintenance cost of the vehicle and extend the service life of the vehicle.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a drive assembly (including lubricating oil) according to an embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of a drive assembly (including lubricating grease) according to another embodiment of the utility model;

[0022] Figure 3 is based on Figure 2 A magnified view at point A;

[0023] Figure 4 is a schematic diagram of a brake disc according to an embodiment of the utility model at a viewing angle;

[0024] Figure 5 is a schematic diagram of a brake disc according to an embodiment of the utility model at another viewing angle;

[0025] Figure 6 is a schematic diagram of a brake disc according to an embodiment of the utility model at another viewing angle;

[0026] Figure 7 is based on Figure 6 Cross-sectional view at BB;

[0027] Figure 8 is a schematic diagram of a main shaft according to an embodiment of the utility model;

[0028] Fig. 9 is a schematic cross-sectional view of a main shaft according to an embodiment of the utility model;

[0029] Fig.10 is a schematic diagram of a motor end cover according to an embodiment of the utility model;

[0030] Fig.11 is a schematic diagram of a brake disc mounting seat according to an embodiment of the utility model at a viewing angle;

[0031] Fig.12 is a schematic diagram of a brake disc mounting seat according to an embodiment of the utility model at another viewing angle;

[0032] Fig.13 is based on Fig.12 Cross-sectional view at CC;

[0033] Fig.14 is a schematic diagram of a brake disc mounting seat according to an embodiment of the utility model at another viewing angle;

[0034] Fig.15 is a schematic diagram of a brake disc mounting seat according to an embodiment of the utility model at another viewing angle;

[0035] Fig.16 It is a structural schematic diagram of a vehicle according to an embodiment of the utility model.

[0036] Reference numerals:

[0037] Vehicles 1000;

[0038] Drive assembly 100;

[0039] Spindle 1, spline 10;

[0040] Motor end cover 2, end cover connection hole 20, end cover hole 21;

[0041] Brake disc 3, brake disc connecting shaft 32, keyway 321;

[0042] Brake disc mounting seat 4, mounting seat connecting sleeve 40, medium inlet 41, medium outlet 42, mounting seat hole 43, mounting seat fastening hole 44;

[0043] Lubricating cooling cavity 5, end cover bearing 51, brake disc bearing 52, lubricating oil 53, first pressing member 54, first pressing ring 55, second pressing member 56, second pressing ring 57, lubricating grease 58;

[0044] Cooling channel 6;

[0045] A first fastener a, a second fastener b;

[0046] First oil seal α, second oil seal β, sealing member γ. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0048] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] Combine the following Figure 1-Figure 16 The drive assembly 100 according to the embodiment of the present invention is described in detail.

[0050] Reference Figure 1-Figure 3 As shown, the drive assembly 100 according to the embodiment of the present utility model includes a brake disc connecting shaft 32 and a brake disc mounting seat 4.

[0051] The brake disc mounting seat 4 is rotatably connected to the brake disc connecting shaft 32 via a brake disc bearing 52, and a cooling channel 6 is provided inside the brake disc mounting seat 4. Different from the related art, in the present application, the cooling channel 6 is provided inside the brake disc mounting seat 44, and the present application is applicable to a drive assembly 100 with a brake disc 3.

[0052] During braking, the brake disc 3 brakes and generates braking force under the action of the external mechanical structure. At the same time, the brake disc 3 generates a large amount of heat, which increases the temperature of the drive assembly 100. Excessive temperature can accelerate the aging of the structure and reduce the service life. By providing a cooling channel 6 in the brake disc mounting seat 4, the cooling channel 6 can pass through the cooling medium, so that heat can be exchanged between the brake disc mounting seat 4 and the cooling channel 6, which can take away the heat of the brake disc mounting seat 4 and indirectly cool the brake disc bearing 52.

[0053] For example, the cooling medium may be a liquid or a gas, such as water, oil, liquid nitrogen, cryogenic helium, or the like.

[0054] According to the drive assembly 100 of the embodiment of the utility model, the cooling channel 6 arranged on the brake disc mounting seat 4 can exchange heat with the brake disc mounting seat 4, cool the brake disc mounting seat 4 and the brake disc bearing 52, extend the service life of the drive assembly 100, improve the quality of the product, and improve the safety during use and the reliability of operation.

[0055] In some embodiments, the drive assembly 100 further includes a main shaft 1, a motor end cover 2, and a brake disc 3. The motor end cover 2 has an end cover hole 21 for the main shaft 1 to pass through, and the end cover hole 21 is rotatably connected to the main shaft 1 through an end cover bearing 51. By providing the end cover bearing 51, the friction between the motor end cover 2 and the main shaft 1 is reduced, which is conducive to improving the transmission efficiency.

[0056] The brake disc 3 is located on the side of the brake disc mounting seat 4 away from the motor end cover 2. Figure 1-Figure 3 As shown, the brake disc 3 is located on the right side of the brake disc mounting seat 4. The brake disc 3 is mounted on the brake disc connecting shaft 32, and the brake disc connecting shaft 32 is mounted on the main shaft 1. During braking, the brake disc 3 brakes and generates braking force under the action of the external mechanical structure. The brake disc 3 can transmit the braking force to the brake disc connecting shaft 32, and then transmit it to the main shaft 1, so that the main shaft 1 stops rotating. The brake disc mounting seat 4 and the brake disc 3 are rotatably connected through the brake disc bearing 52, which can reduce the friction between the brake disc mounting seat 4 and the brake disc 3. The brake disc mounting seat 4 is mounted on the motor end cover 2, and a cooling channel 6 is provided on the brake disc mounting seat 4, and the cooling channel 6 is arranged inside the brake disc mounting seat 4. In the present application, the cooling channel 6 is arranged inside the brake disc mounting seat 4, and the present application is applicable to the drive assembly 100 with a brake disc 3. The beneficial effect brought about by this is that when the brake disc 3 brakes, the friction causes the brake disc 3 to generate a large amount of heat, and the heat is transferred to the main shaft 1 and causes the temperature of the main shaft 1 to rise. Therefore, a cooling channel 6 needs to be set inside the brake disc mounting seat 4. The cooling medium in the cooling channel 6 can exchange heat with the main shaft 1, the motor end cover 2, the brake disc 3 and the brake disc mounting seat 4, thereby indirectly cooling the end cover bearing 51 and the brake disc bearing 52. The present application sets the cooling channel 6 inside the brake disc mounting seat 4, which can be applicable to the drive assembly 100 with the brake disc 3.

[0057] For example, the brake disc mounting seat 4 is made of aluminum alloy, which has a good heat transfer effect and is light in weight, and will not significantly increase the total weight of the drive assembly 100 .

[0058] For example, a medium inlet 41 and a medium outlet 42 are provided on the brake disc mounting seat 4, and both the medium inlet 41 and the medium outlet 42 are connected to the cooling channel 6. The cooling medium can enter the cooling channel 6 through the medium inlet 41, and the cooling medium in the cooling channel 6 can flow out through the medium outlet 42. The medium inlet 41 and the medium outlet 42 can continuously replace the cooling medium, so that continuous cooling can be achieved to ensure the cooling effect.

[0059] like Figure 1 As shown, in some embodiments, a closed lubrication and cooling cavity 5 is formed between the brake disc mounting seat 4 and the motor end cover 2, the end cover bearing 51 is located in the lubrication and cooling cavity 5, the brake disc bearing 52 is located in the lubrication and cooling cavity 5, a lubricating oil 53 is provided in the lubrication and cooling cavity 5, and both the end cover bearing 51 and the brake disc bearing 52 are in contact with the lubricating oil 53. Specifically, the lubricating oil 53 is located in the lubrication and cooling cavity 5, and the lubricating oil 53 can infiltrate the end cover bearing 51 and the brake disc bearing 52, so that the heat of the end cover bearing 51 and the brake disc bearing 52 is more transferred to the lubricating oil 53, and the lubricating oil 53 realizes the cooling of the end cover bearing 51 and the brake disc bearing 52.

[0060] Optionally, when the main shaft 1 is running, the lubricating oil 53 can flow in the lubricating and cooling chamber 5, or the lubricating oil 53 can splash, so that the lubricating oil 53 can contact and flush the end cover bearing 51 and the brake disc bearing 52 in multiple directions. The lubricating oil 53 in the lubricating and cooling chamber 5 can directly lubricate the end cover bearing 51 and the brake disc bearing 52, and at the same time, it can also take away the heat of the end cover bearing 51 and the brake disc bearing 52, and cool the end cover bearing 51 and the brake disc bearing 52.

[0061] Specifically, when the main shaft 1 is running, the end cover bearing 51 generates heat due to friction, and part of the heat of the end cover bearing 51 can be transferred to the lubricating cooling chamber 5. The cooling medium can enter the cooling channel 6 through the medium inlet 41, and then flow out through the medium outlet 42 and take away the heat. The cooling medium can directly take away the heat of the brake disc mounting seat 4, and the brake disc mounting seat 4 is in contact with the lubricating cooling chamber 5, so the cooling medium can exchange heat with the lubricating cooling chamber 5, thereby cooling the lubricating cooling chamber 5 and indirectly cooling the end cover bearing 51. Part of the heat of the end cover bearing 51 can also be transferred to the motor end cover 2, and then transferred to the brake disc mounting seat 4 through the motor end cover 2, and then transferred to the cooling medium inside the brake disc mounting seat 4.

[0062] Similarly, when the brake disc 3 is in operation, part of the heat of the brake disc 3 and the brake disc bearing 52 can be transferred to the lubricating cooling cavity 5, and the cooling medium in the cooling channel 6 can directly take away the heat of the brake disc mounting seat 4. The brake disc mounting seat 4 is in contact with the lubricating cooling cavity 5, so the cooling medium can exchange heat with the lubricating cooling cavity 5, thereby cooling the lubricating cooling cavity 5, thereby indirectly cooling the brake disc 3 and the brake disc bearing 52. Part of the heat of the brake disc bearing 52 can also be directly transferred to the brake disc mounting seat 4, and part of the heat of the brake disc 3 can be transferred to the brake disc mounting seat 4 through the brake disc bearing 52, and then transferred to the cooling medium inside the brake disc mounting seat 4.

[0063] like Figure 1 As shown, for example, the end cover bearing 51 and the brake disc bearing 52 are open oil-lubricated bearings, and the lubricating oil 53 can be immersed in the bearings and lubricate the bearings. The injection amount of the lubricating oil 53 in the lubricating cooling cavity 5 is less than the volume of the lubricating cooling cavity 5, and the injection amount of the lubricating oil 53 can be 1 / 3, 1 / 2, 2 / 3, etc. of the lubricating cooling volume, thereby ensuring appropriate friction torque and temperature rise of the bearing.

[0064] like Figure 1As shown, specifically, when the main shaft 1 rotates, the heat of the end cover bearing 51 and the brake disc bearing 52 can be transferred to the lubricating oil 53, and the lubricating oil 53 and the cooling medium in the brake disc mounting seat 4 exchange heat. The cooling medium cools the end cover bearing 51 and the brake disc bearing 52 by taking away the heat of the lubricating oil 53.

[0065] like Figure 2-Figure 3 As shown, optionally, lubricating grease 58 may be provided at the end cover bearing 51, and lubricating grease 58 may be provided at the brake disc bearing 52. By providing lubricating grease 58 at the bearing, the lubrication effect can be ensured, the noise can be reduced, and the lubricating grease lasts for a long time, which can reduce consumption, maintenance frequency and maintenance costs. That is to say, no lubricating and cooling oil is added to the lubricating and cooling chamber 5.

[0066] It should be pointed out that, referring to Figure 2 In the drive assembly 100, the embodiment provides lubricating grease 58 at the bearing; in other embodiments, refer to Figure 1 In the drive assembly 100, in this embodiment, lubricating oil liquid 53 is arranged in the lubricating cooling chamber 5. Figure 1 Examples and Figure 2 Except for the different selection of bearing lubricating medium, the rest of the structure of the drive assembly 100 is the same in the embodiments.

[0067] For example, Figure 11-Figure 15 As shown, the brake disc mounting seat 4 includes a medium inlet 41, a medium outlet 42, a mounting seat hole 43 and a mounting seat connecting sleeve 40. A cooling channel 6 is also provided in the brake disc mounting seat 4 to accommodate the cooling medium. Fig.12 As shown, the brake disc mounting seat 4 also includes mounting seat fastening holes 44 through which fasteners can pass, and the mounting seat fastening holes 44 are arranged at intervals along the circumference of the brake disc mounting seat 4.

[0068] like Figure 1-Figure 3As shown, in some embodiments, a first clamping member 54 and a first pressure ring 55 are further provided in the lubrication and cooling cavity 5. A first fastening hole is provided on the first clamping member 54, and the first fastening hole penetrates the first clamping member 54 along the thickness direction of the first clamping member 54. The first clamping member 54 is connected and fixed to the motor end cover 2 by a first fastener a, and the first fastener a can pass through the first fastening hole and the fastening hole on the motor end cover 2. The first clamping member 54 can press the outer ring of the end cover bearing 51 onto the motor end cover 2. The first pressure ring 55 can be sleeved on the main shaft 1, and the first pressure ring 55 can press the inner ring of the end cover bearing 51 onto the shoulder of the main shaft 1. By providing the first clamping member 54 and the first pressure ring 55, the reliability and stability of the installation of the end cover bearing 51 can be improved, thereby improving the reliability of the operation of the drive assembly 100. It can be understood that the main shaft 1 is a stepped shaft, and the "shoulder of the main shaft 1" refers to the part on the main shaft 1 where the cross-sectional size changes. The shoulder can position one axial side of the inner ring of the end cover bearing 51, and the first pressure ring 55 can position the other axial side of the inner ring of the end cover bearing 51. The inner ring of the end cover bearing 51 is clamped between the shoulder and the first pressure ring 55.

[0069] Optionally, the first fastener a may be a bolt, a rivet, etc.

[0070] like Figure 1 , Figure 2 , Figure 3 , Fig. 9 and Fig.10 As shown, specifically, the main shaft 1 passes through the end cover hole 21 on the motor end cover 2, and the motor end cover 2 and the main shaft 1 are rotatably connected through the end cover bearing 51. The end cover bearing 51 includes an inner ring and an outer ring, the inner ring of the end cover bearing 51 is matched with the main shaft 1, the inner ring of the end cover bearing 51 is pressed on the main shaft 1 through the first pressing ring 55, and the outer ring of the end cover bearing 51 is pressed to the motor end cover 2 through the first pressing member 54 and the first fastener a.

[0071] In some optional examples, an interference fit may be formed between the inner ring of the end cover bearing 51 and the main shaft 1 .

[0072] like Figure 1-Figure 3 As shown, in some embodiments, the end cover hole 21 of the motor end cover 2 and the main shaft 1 are sealed by a first oil seal α, and the first oil seal α is arranged on the side of the end cover bearing 51 away from the lubricating and cooling chamber 5. By providing the first oil seal α, the oil or impurities in the lubricating and cooling chamber 5 can be prevented from entering the interior of the drive assembly 100, thereby improving the operating stability of the drive assembly 100 and not affecting the cooling of the end cover bearing 51 by the lubricating oil 53 in the lubricating and cooling chamber 5. Figure 1In the example, the first oil seal α is installed on the motor end cover 2, and the lip of the first oil seal α is in contact with the main shaft 1, which is used to seal the lubricating oil 53 inside the lubricating cooling chamber 5 to prevent the lubricating oil 53 from entering the drive assembly 100 through the fitting between the motor end cover 2 and the main shaft 1.

[0073] like Figure 1-Figure 7 As shown, in some embodiments, the brake disc connecting shaft 32 is connected to the brake disc 3, and the brake disc connecting shaft 32 is located on the side of the brake disc 3 facing the motor end cover 2 (such as Figure 1 Left side as shown or Figure 2 left side shown). Reference Figure 3 As shown, the brake disc connecting shaft 32 can be sleeved on the end of the main shaft 1, the brake disc mounting seat 4 has a mounting seat hole 43, the brake disc connecting shaft 32 passes through the mounting seat hole 43, and the braking force on the brake disc 3 is transmitted to the main shaft 1 through the brake disc connecting shaft 32, which is beneficial to improve the sensitivity and effectiveness of braking.

[0074] like Figure 1 As shown, in some embodiments, the mounting seat hole 43 of the brake disc mounting seat 4 and the brake disc connecting shaft 32 are sealed by a second oil seal β, and the second oil seal β is arranged on the side of the brake disc bearing 52 away from the lubricating and cooling chamber 5. The mounting seat hole 43 of the brake disc mounting seat 4 and the brake disc connecting shaft 32 are sealed by the second oil seal β, and the lip of the second oil seal β contacts the brake disc connecting shaft 32 to seal the lubricating and cooling chamber 5. By arranging the second oil seal β between the mounting seat hole 43 of the brake disc mounting seat 4 and the brake disc connecting shaft 32, the leakage of the lubricating oil 53 in the lubricating and cooling chamber 5 can be reduced, the stability of the operation of the drive assembly 100 can be improved, and the cooling of the brake disc bearing 52 by the lubricating oil 53 in the lubricating and cooling chamber 5 is not affected.

[0075] like Figure 4-Figure 7 As shown, for example, the brake disc connecting shaft 32 can be sleeved on the main shaft 1, and the brake disc connecting shaft 32 and the main shaft 1 are connected through a spline structure. A keyway 321 is provided on the brake disc connecting shaft 32, and a spline 10 is provided on one end of the main shaft 1 for the brake disc connecting shaft 32 to be sleeved. In this way, a rigid connection between the brake disc 3 and the main shaft 1 can be achieved, ensuring that the brake disc 3 and the main shaft 1 can rotate or brake synchronously, and the braking force on the brake disc 3 can be transmitted to the main shaft 1 through the brake disc connecting shaft 32, and the main shaft 1 stops rotating.

[0076] Optionally, in other embodiments, the brake disc connecting shaft 32 and the main shaft 1 may be interference fit, and a rigid connection between the brake disc 3 and the main shaft 1 is achieved by adopting the interference fit.

[0077] like Figure 1-Figure 3As shown, in some embodiments, a second pressing member 56 and a second pressing ring 57 are further provided in the lubrication and cooling chamber 5. The second pressing member 56 is connected and fixed to the brake disc mounting seat 4 by the second fastener b, and the second pressing member 56 can press the outer ring of the brake disc bearing 52 onto the brake disc mounting seat 4. The second pressing ring 57 is sleeved on the brake disc connecting shaft 32, and the second pressing ring 57 can press the inner ring of the brake disc bearing 52 onto the shaft shoulder of the brake disc connecting shaft 32. By providing the second pressing member 56 and the second pressing ring 57, the reliability and stability of the installation of the brake disc bearing 52 can be improved, thereby improving the reliability of the operation of the drive assembly 100. It can be understood that the brake disc connecting shaft 32 is a stepped shaft, and the "shoulder of the brake disc connecting shaft 32" refers to the part on the brake disc connecting shaft 32 where the cross-sectional size changes. The shoulder can position one axial side of the inner ring of the brake disc bearing 52, and the second pressure ring 57 can position the other axial side of the inner ring of the brake disc bearing 52. The inner ring of the brake disc bearing 52 is clamped between the shoulder and the second pressure ring 57.

[0078] Optionally, the second fastener b may be a bolt, a rivet, etc.

[0079] like Figure 12-14 As shown, in some embodiments, the brake disc mounting seat 4 includes a mounting seat connecting sleeve 40. Figure 1-Figure 3 As shown, the motor end cover 2 has an end cover connection hole 20, and the mounting seat connection sleeve 40 can be sleeved in the end cover connection hole 20, and a seal γ is provided at the connection and matching position between the mounting seat connection sleeve 40 and the end cover connection hole 20, and the seal γ is used to seal the lubrication and cooling cavity 5. By providing the mounting seat connection sleeve 40 and the end cover connection hole 20, the convenience of assembling the motor end cover 2 and the brake disc mounting seat 4 can be improved. By providing the seal γ at the matching position between the mounting seat connection sleeve 40 and the end cover connection hole 20, the leakage of the lubricating oil 53 and the entry of impurities into the lubrication and cooling cavity 5 can be avoided, thereby improving the stability of the operation of the drive assembly 100.

[0080] like Fig.16 As shown, in some embodiments, the drive assembly 100 further includes a motor housing 200, the motor end cover 2 is connected and fixed to the motor housing 200 by fasteners, and the brake disc mounting seat 4 is located on the side of the motor end cover 2 away from the motor housing 200 (such as Figure 1 As shown on the right side, the motor housing 200, the motor end cover 2, and the brake disc mounting seat 4 are sequentially connected and arranged along the left-right direction.

[0081] The vehicle 1000 according to the embodiment of the present utility model includes the drive assembly 100 according to the embodiment of the present utility model.

[0082] According to the vehicle 1000 of the embodiment of the utility model, by adopting the above-mentioned drive assembly 100, the drive assembly 100 can cool the end cover bearing 51 and the brake disc bearing 52, thereby extending the service life of the drive assembly 100, improving the safety during use and the reliability of the operation of the drive assembly 100, which is beneficial to reducing the maintenance cost of the vehicle 1000 and extending the service life of the vehicle 1000.

[0083] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "left", "right", "thickness", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 a limitation on the present invention.

[0084] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0086] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A drive assembly, characterized in that: include: Brake disc connecting shaft (32); A brake disc mounting seat (4), wherein the brake disc mounting seat (4) is rotatably connected to the brake disc connecting shaft (32) via a brake disc bearing (52), and a cooling channel (6) is provided inside the brake disc mounting seat (4).

2. The drive assembly according to claim 1, characterized in that: The drive assembly also includes: Spindle (1); A motor end cover (2), the motor end cover (2) having an end cover hole (21) for the main shaft (1) to pass through, the end cover hole (21) and the main shaft (1) being rotatably connected via an end cover bearing (51), and the brake disc mounting seat (4) being mounted on the motor end cover (2); A brake disc (3), wherein the brake disc (3) is located on a side of the brake disc mounting seat (4) facing away from the motor end cover (2), and the brake disc (3) is mounted on the brake disc connecting shaft (32), and the brake disc connecting shaft (32) is mounted on the main shaft (1).

3. The drive assembly according to claim 2, characterized in that: A closed lubrication and cooling cavity (5) is formed between the brake disc mounting seat (4) and the motor end cover (2), and the end cover bearing (51) and the brake disc bearing (52) are both located in the lubrication and cooling cavity (5).

4. The drive assembly according to claim 2, characterized in that: Lubricating grease (58) is provided on the end cover bearing (51) and the brake disc bearing (52).

5. The drive assembly according to claim 3, characterized in that: A first pressing piece (54) and a first pressing ring (55) are also provided in the lubrication cooling cavity (5); the first pressing piece (54) is connected and fixed to the motor end cover (2) via a first fastener (a); the first pressing piece (54) presses the outer ring of the end cover bearing (51) onto the motor end cover (2); the first pressing ring (55) is sleeved on the main shaft (1) and presses the inner ring of the end cover bearing (51) onto the shaft shoulder of the main shaft (1).

6. The drive assembly according to claim 3, characterized in that: The end cover hole (21) and the main shaft (1) are sealed via a first oil seal (α), and the first oil seal (α) is arranged on a side of the end cover bearing (51) that is away from the lubrication and cooling cavity (5).

7. The drive assembly according to claim 3, characterized in that: The brake disc connecting shaft (32) is connected to a side of the brake disc (3) facing the motor end cover (2), and the brake disc connecting shaft (32) is sleeved on the end of the main shaft (1), and the brake disc mounting seat (4) has a mounting seat hole (43), and the brake disc connecting shaft (32) passes through the mounting seat hole (43).

8. The drive assembly according to claim 7, characterized in that: The mounting seat hole (43) and the brake disc connecting shaft (32) are sealed via a second oil seal (β), and the second oil seal (β) is arranged on a side of the brake disc bearing (52) facing away from the lubrication cooling cavity (5).

9. The drive assembly according to claim 7, characterized in that: The lubrication and cooling cavity (5) is also provided with a second clamping piece (56) and a second pressure ring (57). The second clamping piece (56) is connected and fixed to the brake disc mounting seat (4) via a second fastener (b). The second clamping piece (56) presses the outer ring of the brake disc bearing (52) onto the brake disc mounting seat (4). The second pressure ring (57) is sleeved on the brake disc connecting shaft (32) and presses the inner ring of the brake disc bearing (52) onto the shoulder of the brake disc connecting shaft (32).

10. The drive assembly according to claim 2, characterized in that: The brake disc mounting seat (4) comprises a mounting seat connecting sleeve (40), the motor end cover (2) has an end cover connecting hole (20), the mounting seat connecting sleeve (40) is sleeved in the end cover connecting hole (20), and a sealing member (γ) is provided at the connection between the mounting seat connecting sleeve (40) and the end cover connecting hole (20).

11. The drive assembly according to claim 2, characterized in that: The drive assembly (100) further comprises a motor housing (200), the motor end cover (2) being connected and fixed to the motor housing (200) via fasteners, and the brake disc mounting seat (4) being located on a side of the motor end cover (2) facing away from the motor housing (200).

12. A vehicle, characterized in that: A drive assembly (100) comprising any one of claims 1-11.

Images