Low-cost transfer case structure suitable for oil-to-electricity

Abstract

The utility model relates to transfer case technical field, concretely relates to a low cost transfer case structure suitable for oil changes electricity, the utility model discloses transfer case body and transfer case cover, the inner wall of transfer case body and transfer case cover is provided with the mounting seat that cooperates with ball bearing, and there is the locating boss and ball bearing outer ring close cooperation on mounting seat, and the top of transfer case body is provided with the mounting hole, and the respirator is installed in mounting hole, and the baffle and oiling screw plug are set up in respirator circumference, the outer end surface of transfer case cover is provided with the round oil mark, and the round oil mark below sets up the oil drain screw plug. The utility model discloses transfer case meets the power transmission demand after oil changes electricity, and utilizes simple and effective setting to reduce the cost, and can guarantee the smooth operation, reliable, adapts to the demand of oil changes electricity market to low -cost, high -performance transfer case.

Description

Technical Field

[0001] This utility model relates to the field of transfer case technology, specifically to a low-cost transfer case structure suitable for oil-to-electric conversion. Background Technology

[0002] Current hydraulic multi-pump systems, consisting of a direct connection between the oil pump and motor, suffer from drawbacks such as heavy weight and susceptibility to vibration and oil leakage. With the surge in demand for "oil-to-electric" conversions, the transfer case, as a core component of power transmission, needs to be compatible with both the motor and reducer, while also meeting requirements for low cost, compactness, and stable operation. However, existing transfer cases are expensive, have poor adaptability, and are difficult to scale up; the bulky size of traditional radial flux motors also restricts the overall machine layout. Furthermore, traditional fuel-powered loaders are energy-intensive and polluting. While new energy lubrication system technologies, such as the one authorized invoice number CN222377188U, have emerged during the electrification transition, some electric loader transmission systems still suffer from complex structures, high costs, and insufficient stability. Moreover, the gear pump resources of crude oil vehicles cannot be reused during oil-to-electric conversions, resulting in resource waste. Therefore, a low-cost, highly adaptable, stable, and reliable electric transmission solution is urgently needed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a low-cost transfer case structure suitable for oil-to-electric conversion.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A low-cost transfer case structure suitable for oil-to-electric conversion includes a transfer case body and a transfer case cover. The transfer case cover has an elliptical cross-section and is fixed to the transfer case body by bolts. Cylindrical pins for assembly positioning are provided on the upper and lower sides of the transfer case cover. The inner walls of the transfer case body and the transfer case cover are provided with mounting seats that mate with ball bearings. The mounting seats have positioning bosses that fit tightly with the outer ring of the ball bearings.

[0006] An input shaft and a drive shaft are mounted on the ball bearing. One end of the input shaft is connected to the motor, and a rotating shaft lip seal is provided around the connection. The other end meshes with gear II on the drive shaft through gear I. A mounting hole is provided on the top of the transfer case, and a breather is installed in the mounting hole. A baffle and an oil filler plug are provided around the breather. A circular oil level indicator is provided on the outer end face of the transfer case cover, and an oil drain plug is provided below the circular oil level indicator.

[0007] In this technical solution, the transfer case meets the power transmission requirements after the conversion from gasoline to electric power while reducing costs through a simple and effective design. It also ensures stable and reliable operation, adapting to the market demand for low-cost, high-performance transfer cases. Specifically, the elliptical cross-section of the transfer case cover reduces material usage and costs while maintaining structural strength and facilitating internal space layout. Cylindrical pins are used for assembly positioning, ensuring precise alignment between the cover and the case body, improving assembly efficiency and quality. The positioning boss on the mounting base fits tightly with the outer ring of the ball bearing, accurately fixing the ball bearing position, ensuring the stability of the input and drive shafts, reducing vibration and wear, and extending service life. A rotary shaft lip seal is installed at the connection between the input shaft and the motor, effectively preventing lubricant leakage and the entry of external impurities, ensuring the normal operation of the transmission system. A breather balances the air pressure inside and outside the transfer case, a baffle prevents oil leakage from the breather, and a filler plug facilitates the addition of lubricating oil. A circular oil level indicator allows for direct observation of the oil level, and a drain plug facilitates lubricant replacement.

[0008] In addition, the low-cost transfer case structure applicable to oil-to-electric conversion proposed above according to this utility model may also have the following additional technical features:

[0009] According to one embodiment of this utility model, the transfer case cover is provided with two PTO (Power Take-Off) ports. The two PTO ports are independently driven and installed, utilizing the abundant gear pump resources of the crude oil truck. The two PTO ports are respectively connected to the working pump and the steering pump.

[0010] In this technical solution, different working devices have varying power requirements in the oil-to-electric conversion scenario. Two independent PTO (Power Take-Off) ports can be connected to different hydraulic pumps, such as the working pump and steering pump, to achieve independent drive, meeting diverse power output requirements and enabling the vehicle to complete multiple tasks simultaneously, thus improving work efficiency. During the oil-to-electric conversion process, existing mature gear pumps are directly utilized, eliminating the need for new research and development, significantly saving R&D costs and time.

[0011] According to one embodiment of the present invention, the inner end face of the transfer case cover is provided with a plug that cooperates with the input shaft.

[0012] According to one embodiment of the present invention, the two ends of the input shaft and the drive shaft are respectively fixed to the positioning bosses on the inner wall of the transfer case housing and the transfer case cover by ball bearings.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] This utility model's transfer case meets the power transmission requirements after oil-to-electric conversion, while reducing costs through a simple and effective design, and ensures stable and reliable operation, thus adapting to the demand of the oil-to-electric conversion market for low-cost, high-performance transfer cases. Attached Figure Description

[0015] Figure 1 This is one of the sectional views of this utility model.

[0016] Figure 2 This is the second sectional view of this utility model.

[0017] Figure 3 This is a side view of the present invention.

[0018] In the diagram: 1. Bolt; 2. Drain plug; 3. Cylindrical pin; 4. Circular oil level indicator; 5. Transfer case housing; 6. Rotary shaft lip seal; 7. Ball bearing; 8. Breather; 9. Oil filler plug; 10. Transfer case cover; 11. Plug; 12. Gear I; 13. Gear II; 14. Hole retaining ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] like Figures 1 to 3 As shown, this embodiment provides a low-cost transfer case structure suitable for oil-to-electric conversion, including a transfer case body 5 and a transfer case cover 10. The transfer case cover 10 has an elliptical cross-section and is connected and fixed to the transfer case body 5 by bolts 1. Cylindrical pins 3 for assembly positioning are provided on the upper and lower sides of the transfer case cover 10. The inner walls of the transfer case body 5 and the transfer case cover 10 are provided with mounting seats that cooperate with ball bearings 7. The mounting seats have positioning bosses that are tightly engaged with the outer ring of the ball bearings 7.

[0022] An input shaft and a drive shaft are mounted on the ball bearing 7. One end of the input shaft is connected to the motor, and a rotating shaft lip seal 6 is provided around the connection. The other end meshes with the gear II 13 on the drive shaft through gear I 12. The top of the transfer case 5 is provided with a mounting hole, in which a breather 8 is installed. A baffle and an oil filler plug 9 are provided around the breather 8. A circular oil level indicator 4 is provided on the outer end face of the transfer case cover 10, and an oil drain plug 2 is provided below the circular oil level indicator 4.

[0023] like Figures 1 to 3As shown, in this technical solution, the transfer case meets the power transmission requirements after the conversion from oil to electric power while reducing costs through a simple and effective design, and ensures stable and reliable operation, adapting to the market demand for low-cost, high-performance transfer cases. Specifically, the elliptical cross-section transfer case cover 10 reduces material usage and costs while ensuring structural strength and facilitating internal space layout. The cylindrical pin 3 is used for assembly positioning, ensuring precise alignment between the cover and the case body, improving assembly efficiency and quality. The positioning boss on the mounting base fits tightly with the outer ring of the ball bearing 7, precisely fixing the position of the ball bearing 7, ensuring the stability of the input shaft and drive shaft operation, reducing vibration and wear, and extending service life. A rotary shaft lip seal 6 is provided at the connection between the input shaft and the motor, effectively preventing lubricating oil leakage and the entry of external impurities, ensuring the normal operation of the transmission system. The breather 8 is used to balance the air pressure inside and outside the transfer case, the baffle prevents oil leakage from the breather 8, and the filler plug 9 facilitates the addition of lubricating oil. The circular oil level indicator 4 allows for direct observation of the oil level, and the drain plug 2 facilitates lubricating oil replacement.

[0024] In addition, the low-cost transfer case structure applicable to oil-to-electric conversion proposed above according to this utility model may also have the following additional technical features:

[0025] According to one embodiment of this utility model, the transfer case cover 1010 is provided with two PTO power take-off ports. The two PTO power take-off ports are independently driven and independently installed and used, making use of the large number of gear pump resources of the crude oil truck. The two PTO power take-off ports are respectively connected to the working pump and the steering pump.

[0026] In this technical solution, different working devices have varying power requirements in the oil-to-electric conversion scenario. Two independent PTO (Power Take-Off) ports can be connected to different hydraulic pumps, such as the working pump and steering pump, to achieve independent drive, meeting diverse power output requirements and enabling the vehicle to complete multiple tasks simultaneously, thus improving work efficiency. During the oil-to-electric conversion process, existing mature gear pumps are directly utilized, eliminating the need for new research and development, significantly saving R&D costs and time.

[0027] According to one embodiment of the present invention, the inner end face of the transfer case cover 10 is provided with a plug 11 that cooperates with the input shaft.

[0028] According to one embodiment of the present invention, the two ends of the input shaft and the drive shaft are respectively fixed to the positioning bosses on the inner wall of the transfer case housing 5 and the transfer case cover 10 by ball bearings 7.

[0029] The usage process of the above embodiments is as follows:

[0030] like Figures 1 to 3As shown, when the motor starts, power is transmitted through the input shaft. The rotating shaft lip seal 6 at the connection between the input shaft and the motor prevents lubricating oil leakage and impurities from entering. Gear I 12 at the other end of the input shaft meshes with gear II 13 on the drive shaft, transmitting power to the drive shaft. Two independent PTO power take-off ports are connected to the working pump and steering pump respectively, enabling independent drive and meeting diverse power needs. The gear pump resources of the crude oil truck can also be reused. The breather 8 balances the air pressure inside and outside the transfer case, and the baffle prevents oil leakage. The circular oil level indicator 4 facilitates observation of the oil level, and the drain plug 2 facilitates lubricating oil replacement. The elliptical cross-section transfer case cover 10 reduces material usage, the cylindrical pin 3 ensures precise assembly, and the positioning boss fixes the position of the ball bearing 7 to ensure stable operation.

[0031] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A low-cost transfer case structure suitable for use in an oil-electric vehicle, characterized by comprising: The transfer case includes a transfer case body (5) and a transfer case cover (10). The transfer case cover (10) has an elliptical cross-section and is connected and fixed to the transfer case body (5) by bolts (1). Cylindrical pins (3) for assembly positioning are provided on the upper and lower sides of the transfer case cover (10). The inner walls of the transfer case body (5) and the transfer case cover (10) are provided with mounting seats that cooperate with ball bearings (7). The mounting seats have positioning bosses that are tightly fitted with the outer ring of the ball bearings (7). An input shaft and a drive shaft are mounted on a ball bearing (7). One end of the input shaft is connected to a motor, and a rotating shaft lip seal (6) is provided around the connection. The other end meshes with gear II (13) on the drive shaft through gear I (12). A mounting hole is provided on the top of the transfer case (5), and a breather (8) is installed in the mounting hole. A baffle and an oil filler plug (9) are provided around the breather (8). A circular oil level indicator (4) is provided on the outer end face of the transfer case cover (10), and an oil drain plug (2) is provided below the circular oil level indicator (4).

2. The low-cost transfer case structure suitable for an oil-electric conversion according to claim 1, characterized by, The transfer case cover (10) is provided with two PTO power take-off ports.

3. The low-cost transfer case structure suitable for an oil-electric conversion according to claim 2, characterized by, The two PTO power take-off ports are independently driven and installed, utilizing a large amount of gear pump resources from the crude oil truck.

4. The low-cost transfer case structure suitable for oil-to-electric conversion as described in claim 2, characterized in that, The two PTO power take-off ports are connected to the working pump and the steering pump, respectively.

5. The low-cost transfer case structure suitable for an oil-electric conversion according to claim 1, characterized by, The inner end face of the transfer case cover (10) is provided with a plug (11) that cooperates with the input shaft.

6. The low-cost transfer case structure suitable for an oil-electric conversion according to claim 1, characterized by The two ends of the input shaft and the drive shaft are respectively fixed to the positioning bosses on the inner wall of the transfer case housing (5) and the transfer case cover (10) by ball bearings (7).

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