Driving motor for new energy tractor
By setting extension plates and connecting load-bearing plates on the outer edges of the front and rear end covers of the new energy drive motor, and using cast iron material, the problems of insufficient load-bearing capacity and poor heat dissipation performance of traditional drive motors are solved, achieving high strength and good heat dissipation, which is suitable for new energy tractors.
Patent Information
- Application Number
- CN202422905553.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Traditional new energy drive motors have insufficient load-bearing capacity and poor heat dissipation performance, which cannot meet the usage requirements of new energy tractors. Furthermore, changing to a cast iron housing would lead to a decrease in motor power and high development costs.
Extension plates are installed on the outer edges of the front and rear end covers of the motor and connected to them by load-bearing plates. Cast iron material is used to increase the overall strength while maintaining the heat dissipation performance of the aluminum shell structure, forming a beam-type load-bearing structure.
The load-bearing capacity of the drive motor has been improved to meet the usage requirements of tractors, while maintaining the motor's heat dissipation performance and original performance without being affected, thus reducing development costs.
Smart Images
Figure CN223553130U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, specifically, to a drive motor for a new energy tractor. Background Technology
[0002] With the industrialization of new energy power and the gradual maturation of its commercial chain in my country, new energy tractors, as non-road vehicles, will gradually enter the market. The chassis system of a tractor differs from that of a road vehicle. A traditional tractor chassis is basically composed of an engine, gearbox, and rear axle, with the engine oil pan, gearbox, and rear axle forming a load-bearing beam structure. In contrast, new energy tractors mostly use range-extended hybrid power systems, consisting of an engine, drive motor, gearbox, and rear axle. In this case, the engine oil pan, drive motor, gearbox, and rear axle must form a load-bearing beam structure, and the drive motor as a whole must serve as part of the chassis to bear the load.
[0003] Existing drive motor structures for new energy vehicles generally include a stator, rotor, front cover, frame, and rear cover. To ensure adequate heat dissipation, the frame and end covers are typically made of cast aluminum. However, cast aluminum housings lack sufficient load-bearing capacity for heavy tractors, posing a risk. Replacing the entire motor housing with cast iron would worsen heat dissipation, reducing motor power by up to 12%, and also incurs higher development costs. Furthermore, to ensure the required air gap dimensions between the stator and rotor, the rear cover is generally not recommended for load-bearing, as deformation could alter the air gap during operation. In summary, traditional drive motor structures cannot meet the requirements for drive motors used in new energy tractors. We need to improve the motor's load-bearing capacity while maintaining its original performance and heat dissipation requirements. This invention aims to provide a new energy tractor drive motor structure to address these issues. Utility Model Content
[0004] The purpose of this utility model is to provide a drive motor for new energy tractors, which solves the load-bearing problem of drive motors for new energy tractors.
[0005] To solve the above problems, the present invention adopts the following technical means:
[0006] A drive motor for a new energy tractor includes a cylindrical motor base for the motor. A front motor cover and a rear motor cover are respectively installed at both ends of the motor base. A first extension plate extends from the outer edge of the front motor cover, and a second extension plate extends from the outer edge of the rear motor cover. A load-bearing plate is constructed between the first extension plate and the second extension plate. Both ends of the load-bearing plate are detachably connected to the first extension plate and the second extension plate, respectively.
[0007] Preferably, the first extension plate is arranged around the axis of the front end cover of the motor, and four of them are provided, with adjacent first extension plates arranged at equal intervals.
[0008] The second extension plate is arranged around the axis of the rear end cover of the motor, and there are four of them, with each second extension plate corresponding to one of the first extension plates.
[0009] Furthermore, the front cover of the motor, the rear cover of the motor, and the load-bearing plate are all made of QT450 cast iron.
[0010] Furthermore, the length of the load-bearing plate is greater than the distance between the first extension plate and the second extension plate, with a difference of 0.012 mm.
[0011] Furthermore, the gap between the load-bearing plate and the outer wall of the motor base is provided.
[0012] Furthermore, the two ends of the load-bearing plate are respectively detachably connected to the first extension plate and the second extension plate by bolts.
[0013] Furthermore, the inner wall of the motor base is constructed with a water jacket, which abuts and fits against the outer casing of the motor installed inside the motor base.
[0014] This utility model has the following beneficial effects during use:
[0015] Based on traditional vehicle-grade new energy drive motors, the original aluminum housing structure of the motor frame remains unchanged, ensuring that motor performance and heat dissipation requirements are not affected, thus saving development costs. The front and rear covers of the motor are replaced with cast iron housings to increase the overall strength of the motor. A load-bearing plate is added to the circumference of the motor frame, and the two ends of the load-bearing plate are bolted to the front and rear covers of the motor, enabling the drive motor, which was originally unable to bear the load, to be supported, thus meeting the usage requirements of tractors. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0018] Among them, 1-motor base, 2-motor front end cover, 3-motor rear end cover, 4-first extension plate, 5-second extension plate, 6-load-bearing plate, 7-water jacket. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0021] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Please refer to Figure 1 and Figure 2 As shown, a drive motor for a new energy tractor includes a cylindrical motor base 1 for the motor. A front motor cover 2 and a rear motor cover 3 are respectively installed at both ends of the motor base 1. A first extension plate 4 extends from the outer edge of the front motor cover 2, and a second extension plate 5 extends from the outer edge of the rear motor cover 3. A load-bearing plate 6 is constructed between the first extension plate 4 and the second extension plate 5. Both ends of the load-bearing plate 6 are detachably connected to the first extension plate 4 and the second extension plate 5, respectively.
[0026] In this way, based on the traditional new energy drive motor for vehicles, the motor base 1 retains its original aluminum shell structure, thus ensuring that the motor performance and heat dissipation requirements are not affected, saving development costs; the front and rear covers of the motor are changed from aluminum shells to cast iron shells, increasing the overall strength of the motor. A load-bearing plate 6 is added to the circumference of the motor base 1, and the two ends of the load-bearing plate 6 are bolted to the front and rear covers of the motor, enabling the drive motor, which was originally unable to bear the load, to achieve the effect of bearing the load, meeting the usage requirements of the tractor.
[0027] Furthermore, the first extension plate 4 is arranged around the axis of the motor front end cover 2, and four of them are provided, with adjacent first extension plates 4 arranged at equal intervals.
[0028] The second extension plate 5 is arranged around the axis of the motor rear end cover 3, and four of them are arranged, with each second extension plate 5 corresponding to one first extension plate 4.
[0029] In this way, by setting up four pairs of first extension plates 4 and second extension plates 5, four load-bearing plates 6 are correspondingly assembled, which not only avoids excessive centering of the entire drive motor due to the assembly of load-bearing plates 6, but also makes it easier for the load-bearing plates 6 to bear the load more comprehensively when installing the drive motor.
[0030] Furthermore, the front cover 2 of the motor, the rear cover 3 of the motor, and the load-bearing plate 6 are all made of QT450 cast iron.
[0031] This ensures the overall strength of the entire drive motor.
[0032] Furthermore, the length of the load-bearing plate 6 is greater than the distance between the first extension plate 4 and the second extension plate 5, with a difference of 0.012 mm.
[0033] By setting the length difference in this way, the load-bearing plate 6 can be installed with a slight interference fit, thus allowing the load-bearing plate 6, the front cover 2 of the motor, and the rear cover 3 of the motor to form a beam-type load-bearing structure. This provides excellent load-bearing performance.
[0034] Furthermore, a gap is provided between the load-bearing plate 6 and the outer wall of the motor base 1. In this way, after the aforementioned beam-type load-bearing structure is formed, the intermediate housing of the motor, i.e., the housing of the motor base 1, can be free from or have its stress reduced, thereby ensuring the required air gap between the stator and rotor during motor operation.
[0035] Furthermore, the two ends of the load-bearing plate 6 are respectively connected to the first extension plate 4 and the second extension plate 5 by bolts.
[0036] To facilitate the installation and removal of the load-bearing plate 6.
[0037] Furthermore, the inner wall of the motor base 1 is constructed with a water jacket 7, which abuts and fits snugly against the outer casing of the motor installed inside the motor base 1. This ensures good heat dissipation and meets the performance requirements of the motor.
[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A drive motor for a new energy tractor, characterized in that, The device includes a cylindrical motor base (1) for housing an electric motor. A front motor cover (2) and a rear motor cover (3) are respectively installed at both ends of the motor base (1). A first extension plate (4) extends from the outer edge of the front motor cover (2), and a second extension plate (5) extends from the outer edge of the rear motor cover (3). A load-bearing plate (6) is constructed between the first extension plate (4) and the second extension plate (5). Both ends of the load-bearing plate (6) are detachably connected to the first extension plate (4) and the second extension plate (5), respectively.
2. The drive motor for a new energy tractor according to claim 1, characterized in that, The first extension plate (4) is arranged around the axis of the front end cover (2) of the motor, and there are four of them, with two adjacent first extension plates (4) arranged at equal intervals; The second extension plate (5) is arranged around the axis of the motor rear end cover (3), and four of them are arranged, with each second extension plate (5) corresponding to one first extension plate (4).
3. A drive motor for a new energy tractor according to claim 1 or 2, characterized in that, The front cover (2) of the motor, the rear cover (3) of the motor, and the load-bearing plate (6) are all made of QT450 cast iron.
4. A drive motor for a new energy tractor according to claim 1 or 2, characterized in that, The length of the load-bearing plate (6) is greater than the distance between the first extension plate (4) and the second extension plate (5), with a difference of 0.012 mm.
5. A drive motor for a new energy tractor according to claim 1 or 2, characterized in that, The load-bearing plate (6) is separated from the outer wall of the motor base (1).
6. A drive motor for a new energy tractor according to claim 1 or 2, characterized in that, The two ends of the load-bearing plate (6) are respectively connected to the first extension plate (4) and the second extension plate (5) by bolts.
7. A drive motor for a new energy tractor according to claim 1, characterized in that, The inner wall of the motor base (1) is constructed with a water jacket (7), and the water jacket (7) abuts against and fits against the outer shell of the motor installed in the motor base (1).