CN217099653U - Four-wheel drive system and engineering machinery - Google Patents
Four-wheel drive system and engineering machinery Download PDFInfo
- Publication number
- CN217099653U CN217099653U CN202220896880.5U CN202220896880U CN217099653U CN 217099653 U CN217099653 U CN 217099653U CN 202220896880 U CN202220896880 U CN 202220896880U CN 217099653 U CN217099653 U CN 217099653U
- Authority
- CN
- China
- Prior art keywords
- gear
- stage
- motor
- reduction mechanism
- drive system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Retarders (AREA)
Abstract
The utility model provides a four wheel drive system and engineering machine tool, this four wheel drive system include four motor mechanism, four reduction gears and four wheels, and motor mechanism, reduction gears and wheel three one-to-one set up. Each speed reducing mechanism comprises a plurality of stages of gear speed reducing mechanisms which are in transmission connection in sequence; the output end of the motor mechanism is directly connected with the input end of the first stage in the multi-stage gear reduction mechanism in a transmission manner, and the output end of the last stage in the multi-stage gear reduction mechanism is directly connected with the wheel in a transmission manner. Through the four-wheel drive system, independent drive of four wheels can be realized, a larger transmission ratio is obtained, and the arrangement of half shafts is omitted, so that the overall size of the four-wheel drive system is reduced, the overall structure is simplified, and the defects of large overall size and high comprehensive cost of the four-wheel drive system in the prior art are overcome.
Description
Technical Field
The utility model relates to the technical field of transmission, concretely relates to four-wheel drive system and engineering machine tool.
Background
At present, for engineering machinery such as an electric loader and the like, a driving system is used for realizing independent driving of four wheels. For the driving system, each wheel is correspondingly connected with one driving motor, and each driving motor is connected with the wheel through a reduction gearbox, a half shaft and other transmission structures so as to realize four-wheel independent driving. However, the existing driving system has large overall size, difficult arrangement in the vehicle and high comprehensive cost.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the great, the higher defect of comprehensive cost of the whole size of the four wheel drive system among the prior art to a four wheel drive system and engineering machine tool are provided.
In order to solve the above problem, the utility model provides a four-wheel drive system, it includes motor mechanism, reduction gears and wheel. Wherein, four motor mechanisms are arranged; the number of the speed reducing mechanisms is four, and each speed reducing mechanism comprises a multi-stage gear speed reducing mechanism which is in transmission connection in sequence; the wheels are provided with four. The motor mechanism, the speed reducing mechanism and the wheels are arranged in a one-to-one correspondence mode, the output end of the motor mechanism is directly connected with the input end of the first stage in the multi-stage gear speed reducing mechanism in a transmission mode, and the output end of the last stage in the multi-stage gear speed reducing mechanism is directly connected with the wheels in a transmission mode.
Optionally, each speed reduction mechanism comprises a first-stage gear speed reduction mechanism, a second-stage gear speed reduction mechanism and a third-stage gear speed reduction mechanism which are sequentially connected in a transmission manner, the output end of the motor mechanism is directly connected with the input end of the first-stage gear speed reduction mechanism in a transmission manner, and the output end of the third-stage gear speed reduction mechanism is directly connected with the wheel in a transmission manner.
Alternatively, the first stage gear reduction mechanism, the second stage gear reduction mechanism, and the third stage gear reduction mechanism are all provided as a planetary gear mechanism.
Alternatively, sun gears of the first-stage gear reduction mechanism, the second-stage gear reduction mechanism and the third-stage gear reduction mechanism are coaxially arranged.
Optionally, each motor mechanism comprises a dual-drive motor, and the output end of the dual-drive motor is in transmission connection with the sun gear of the first-stage gear reduction mechanism; or each motor mechanism comprises a single driving motor, and the output end of the single driving motor is in transmission connection with the sun gear of the first-stage gear speed reducing mechanism.
Optionally, the first-stage gear reduction mechanism is configured as a first gear pair mechanism, the first gear pair mechanism includes a first driving gear and a first driven gear which are engaged with each other, and the second-stage gear reduction mechanism and the third-stage gear reduction mechanism are both configured as a planetary gear mechanism; the motor mechanism comprises a first single driving motor, the output end of the first single driving motor is in transmission connection with the first driving gear, and the first driven gear is in transmission connection with the sun gear of the second-stage gear reduction mechanism.
Optionally, the first gear pair mechanism further comprises a second driving gear, and the second driving gear is engaged with the first driven gear; the motor mechanism further comprises a second single driving motor, and the output end of the second single driving motor is in transmission connection with the second driving gear.
Optionally, the first-stage gear reduction mechanism and the third-stage gear reduction mechanism are both arranged as a planetary gear mechanism, the second-stage gear reduction mechanism is arranged as a second gear pair mechanism, and the second gear pair mechanism comprises a third driving gear and a second driven gear which are meshed with each other; the planet carrier of the first-stage gear reduction mechanism is in transmission connection with the third driving gear, and the second driven gear is in transmission connection with the sun gear of the third-stage gear reduction mechanism.
Optionally, each motor mechanism comprises a single driving motor, and an output end of the single driving motor is in transmission connection with the sun gear of the first-stage gear reduction mechanism.
The utility model also provides an engineering machine tool, it includes as above four wheel drive system.
The utility model has the advantages of it is following:
1. the motor mechanism, the speed reducing mechanism and the wheels are arranged in a one-to-one correspondence mode and are connected in a transmission mode in sequence, and independent driving of the four wheels can be achieved. On the basis, the multi-stage gear reduction mechanism is respectively in direct transmission connection with the motor mechanism and the wheels, so that a larger transmission ratio can be obtained, a small-torque high-speed motor can be adopted, the size of the motor mechanism is reduced, the arrangement of half shafts is omitted, the overall size of the four-wheel drive system is further reduced, the overall structure is simplified, and the comprehensive cost is reduced.
2. The speed reducing mechanism comprises a first-stage gear speed reducing mechanism, a second-stage gear speed reducing mechanism and a third-stage gear speed reducing mechanism which are three-stage gear speed reducing mechanisms, so that a larger transmission ratio can be obtained, higher transmission efficiency is ensured, and the whole size of the speed reducing mechanism is smaller.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a four-wheel drive system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a four-wheel drive system according to a second embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a four-wheel drive system provided by a third embodiment of the present invention;
fig. 4 shows a schematic structural diagram of a four-wheel drive system according to a fourth embodiment of the present invention.
Description of reference numerals:
10. a motor mechanism; 11. a dual drive motor; 12. a single drive motor; 20. a speed reduction mechanism; 21. a first stage gear reduction mechanism; 211. a first ring gear; 212. a first sun gear; 213. a first planet gear; 214. a first carrier; 215. a first drive gear; 216. a first driven gear; 217. a second driving gear; 22. a second stage gear reduction mechanism; 221. a second ring gear; 222. a second sun gear; 223. a second planet wheel; 224. a second planet carrier; 225. a third driving gear; 226. a second driven gear; 23. a third stage gear reduction mechanism; 231. a third ring gear; 232. a third sun gear; 233. a third planet gear; 234. a third carrier; 30. and (7) wheels.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply 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 limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example one
Referring to fig. 1, the present embodiment provides a four-wheel drive system, which includes four motor mechanisms 10, four speed reduction mechanisms 20, and four wheels 30, wherein the motor mechanisms 10, the speed reduction mechanisms 20, and the wheels 30 are disposed in one-to-one correspondence. Wherein, each speed reducing mechanism 20 comprises a plurality of gear speed reducing mechanisms which are in transmission connection in sequence; the output end of the motor mechanism 10 is directly connected with the input end of the first stage in the multi-stage gear reduction mechanism in a transmission manner, and the output end of the last stage in the multi-stage gear reduction mechanism is directly connected with the wheels 30 in a transmission manner.
According to the above arrangement, since the motor mechanisms 10, the reduction mechanism 20, and the wheels 30 are in one-to-one correspondence and are in transmission connection in sequence, independent driving of the four wheels 30 can be realized. In addition, by providing the reduction mechanism 20 as a multi-stage gear reduction mechanism, a large transmission ratio can be obtained, and thus a small-torque high-speed motor can be used as the motor mechanism 10, reducing the size of the motor mechanism 10. Meanwhile, the multi-stage gear reduction mechanism is directly connected with the motor mechanism 10 and the wheels 30 in a transmission mode, so that half shafts are omitted, the overall size of the four-wheel drive system can be further reduced, the overall structure is simplified, and the comprehensive cost is reduced.
Preferably, each speed reducing mechanism 20 comprises a first-stage gear speed reducing mechanism 21, a second-stage gear speed reducing mechanism 22 and a third-stage gear speed reducing mechanism 23 which are sequentially connected in a transmission manner, the output end of the motor mechanism 10 is directly connected with the input end of the first-stage gear speed reducing mechanism 21 in a transmission manner, and the output end of the third-stage gear speed reducing mechanism 23 is directly connected with the wheel 30 in a transmission manner.
As for the reduction mechanism 20, the smaller the number of stages of the gear reduction mechanism included therein, the smaller the transmission ratio, and the motor with lower rotation speed and larger torque needs to be used as the motor mechanism 10, and the size and weight of the motor mechanism 10 are larger; on the contrary, the larger the number of stages of the gear reduction mechanism is, the larger the transmission ratio is, the higher the requirement on the rotation speed of the motor mechanism 10 is, the lower the transmission efficiency is, and the higher the requirement on the sealing structure such as the bearing and the oil seal is. Therefore, by designing the number of stages of the gear reduction mechanism 20 to be three, a large transmission ratio can be obtained, high transmission efficiency is ensured, and the overall size of the reduction mechanism 20 is small, and overall performance and cost are more balanced.
In the present embodiment, as shown in fig. 1, the first-stage gear reduction mechanism 21, the second-stage gear reduction mechanism 22, and the third-stage gear reduction mechanism 23 are all provided as a planetary gear mechanism. At this time, the speed reduction mechanism 20 has the following advantages: the structure appearance is convenient, the structure is compact, and the volume is small; in the aspect of transmission, the transmission mechanism has the advantages of stable operation, strong bearing capacity, capability of bearing strong impact, large transmission ratio range and high overall transmission efficiency.
In particular structural aspects, referring to fig. 1, the first-stage gear reduction mechanism 21 includes a first ring gear 211, a first sun gear 212, first planetary gears 213, and a first carrier 214. First ring gear 211 is fixed, first sun gear 212 and first planet gear 213 are both arranged in first ring gear 211, first sun gear 212, first planet gear 213 and first ring gear 211 are sequentially engaged, and first planet gear 213 is further connected with first planet carrier 214 to drive first planet carrier 214 to rotate. The second-stage gear reduction mechanism 22 includes a second ring gear 221, a second sun gear 222, a second planet gear 223 and a second planet carrier 224, the third-stage gear reduction mechanism 23 includes a third ring gear 231, a third sun gear 232, a third planet gear 233 and a third planet carrier 234, and the connection relationship between the parts inside the second-stage gear reduction mechanism 22 and the third-stage gear reduction mechanism 23 is the same as that of the first-stage gear reduction mechanism 21, and is not described herein again.
Further, the motor mechanism 10 is in driving connection with the first sun gear 212, the first planet carrier 214 is in driving connection with the second sun gear 222, the second planet carrier 224 is in driving connection with the third sun gear 232, and the third planet carrier 234 is in driving connection with the wheel 30.
Taking any one of the wheels 30 as an example, the transmission process of the four-wheel drive system is as follows: at the beginning, the motor mechanism 10 drives the first sun gear 212 to rotate, the first sun gear 212 drives the first planet gear 213 to rotate, and the first planet gear 213 drives the first planet carrier 214 to rotate; then, the first planet carrier 214 drives the second sun gear 222 to rotate, the second sun gear 222 drives the second planet gear 223 to rotate, and the second planet gear 223 drives the second planet carrier 224 to rotate; finally, the second planet carrier 224 drives the third sun gear 232 to rotate, the third sun gear 232 drives the third planet gear 233 to rotate, the third planet gear 233 drives the third planet carrier 234 to rotate, and the third planet carrier 234 drives the wheel 30 to rotate, so that the transmission of the rotating speed and the torque is realized.
Preferably, as shown in fig. 1, sun gears of the first-stage gear reduction mechanism 21, the second-stage gear reduction mechanism 22, and the third-stage gear reduction mechanism 23 are coaxially arranged, so that the reduction mechanism 20 is more compact as a whole.
In the present embodiment, the motor mechanism 10 is also provided specifically. As shown in fig. 1, each motor mechanism 10 includes a dual-drive motor 11, and an output end of the dual-drive motor 11 is in transmission connection with a sun gear (i.e., a first sun gear 212) of the first-stage gear reduction mechanism 21. Specifically, referring to fig. 1, a total of four dual-drive motors 11, respectively denoted by M1+ M2, M3+ M4, M5+ M6, and M7+ M8, are provided in the four-wheel drive system.
When the four-wheel drive system operates, the vehicle can work in a first gear state by controlling the forward rotation of the dual-drive motor 11; by controlling the dual-drive motor 11 to rotate reversely, the vehicle can work in a second gear state. In addition, by using the dual drive motor 11, the redundancy of the motor mechanism 10 can be increased, and the reliability of the entire four-wheel drive system can be improved.
According to the above description, the four-wheel drive system provided by the present embodiment has the following advantages:
1. the dual-drive motor 11, the speed reducing mechanism 20 and the wheels 30 are sequentially connected in a transmission manner, half shafts are not required to be arranged, the overall structure is compact, the arrangement of the whole vehicle is facilitated, and the transmission efficiency is high;
2. the speed reducing mechanism 20 comprises a multi-stage gear speed reducing mechanism, the transmission ratio range is large, and the vehicle dynamic property, the driving comfort and the driving safety are higher;
3. the four wheels 30 are driven in the same setting, so that independent driving of any wheel 30 can be realized, the driving state can be adjusted timely according to the road working condition, the operation flexibility is high, and the use in various operation environments can be met.
The embodiment also provides a working machine which comprises the four-wheel drive system. Specifically, the construction machine may be an electric loader, an electric excavator, or the like.
Example two
The embodiment provides a four-wheel drive system and a construction machine comprising the same.
As shown in fig. 2, the four-wheel drive system is basically the same as the four-wheel drive system provided in the first embodiment, except that: each motor mechanism 10 includes a single driving motor 12, and an output end of the single driving motor 12 is in transmission connection with a sun gear (i.e., the first sun gear 212) of the first-stage gear reduction mechanism 21.
In the present embodiment, the four-wheel drive system is provided with four single drive motors 12, which are denoted by M1, M2, M3, and M4, respectively. At this time, the overall structure of the motor mechanism 10 is simpler, the mass is lighter, and the cost is lower.
EXAMPLE III
The embodiment provides a four-wheel drive system and a construction machine comprising the same.
As shown in fig. 3, the four-wheel drive system is basically the same as the four-wheel drive system provided in the first embodiment, except that: the motor mechanism 10 and the first-stage gear reduction mechanism 21 are arranged differently.
In the present embodiment, the first-stage gear reduction mechanism 21 is provided as a gear pair mechanism (for convenience of description and understanding, this gear pair mechanism is referred to as a first gear pair mechanism), and includes a first driving gear 215 and a first driven gear 216 that are meshed with each other. The second-stage gear reduction mechanism 22 and the third-stage gear reduction mechanism 23 are both provided as a planetary gear mechanism.
Compared with a planetary gear mechanism, the gear pair mechanism is simpler, but has larger relative size. Therefore, in the present embodiment, only the first-stage gear reduction mechanism 21 is provided as the gear pair mechanism to make a better balance between the structural complexity and the structural size.
Accordingly, the motor mechanism 10 includes a first single driving motor, an output end of the first single driving motor is in transmission connection with the first driving gear 215, and the first driven gear 216 is in transmission connection with the sun gear (i.e., the second sun gear 222) of the second-stage gear reduction mechanism 22. In this embodiment, the four first single driving motors are denoted by M1, M3, M5, and M7, respectively. When the four-wheel drive system operates, the first driving gear 215 can be driven to rotate by the first single driving motor, and the first driving gear 215 drives the first driven gear 216 to rotate; then, the first driven gear 216 drives the second sun gear 222 to rotate, and then the second planet gear 223 and other structures (refer to the first embodiment of the specific transmission process) transmit the rotation speed and the torque to the wheel 30, so as to drive the wheel 30.
Further, referring to fig. 3, the first gear pair mechanism further includes a second driving gear 217, and the second driving gear 217 is engaged with the first driven gear 216.
The motor mechanism 10 further includes a second single driving motor, and an output end of the second single driving motor is in transmission connection with the second driving gear 217. In this embodiment, the four second single driving motors are denoted by M2, M4, M6, and M8, respectively. Therefore, if the first single driving motor fails, the wheels 30 can still be driven by the second single driving motor, so that the redundancy of the system is increased, and the overall reliability of the four-wheel driving system is improved. Of course, if the second single drive motor fails, the driving of the wheel 30 may also be achieved by the first single drive motor.
In addition, it should be noted that, for the driving of any wheel 30, since the first single driving motor and the second single driving motor share the second driving gear 217, the number of parts is further reduced, and the overall structure of the system is simplified.
Example four
The embodiment provides a four-wheel drive system and a construction machine comprising the same.
As shown in fig. 4, the four-wheel drive system is basically the same in arrangement as the four-wheel drive system provided in the first embodiment, except for the arrangement of the motor mechanism 10 and the second-stage gear reduction mechanism 22.
In the present embodiment, the first-stage gear reduction mechanism 21 and the third-stage gear reduction mechanism 23 are both provided as a planetary gear mechanism. The second stage gear reduction mechanism 22 is provided as a second gear pair mechanism including a third driving gear 225 and a second driven gear 226 that are meshed. The carrier of the first-stage gear reduction mechanism 21 is drivingly connected to the third drive gear 225, and the second driven gear 226 is drivingly connected to the sun gear of the third-stage gear reduction mechanism 23.
Similarly to the first-stage reduction gear mechanism 21 being provided as the first gear pair mechanism, the second-stage reduction gear mechanism 22 being provided as the second gear pair mechanism alone can also achieve a better balance between the structural complexity and the structural size.
In addition, when the gear pair mechanism is provided in combination with the third and fourth embodiments, it is preferable that the first stage gear reduction mechanism 21 or the second stage gear reduction mechanism 22 is provided as the gear pair mechanism, and the third stage gear reduction mechanism 23 is not selected to be provided as the gear pair mechanism because: when the multi-stage gear reduction mechanism is used for distributing the transmission ratio, the transmission ratio of the last stage gear reduction mechanism is always the largest, and the larger the transmission ratio is, the larger the size of the gear pair mechanism is, so that the gear pair mechanism can be prevented from being overlarge in size by setting the first stage gear reduction mechanism 21 or the second stage gear reduction mechanism 22 as the gear pair mechanism, and the reduction of the size of the gear reduction mechanism is facilitated.
Further, referring to fig. 4, each motor mechanism 10 includes a single driving motor 12, and an output end of the single driving motor 12 is in transmission connection with the sun gear of the first-stage gear reduction mechanism 21 to realize power transmission, so that the overall structure is simple and the cost is low. In this embodiment, four single drive motors 12 are denoted by M1, M2, M3, and M4, respectively.
As a modification of the present embodiment, in another embodiment, the dual-drive motor 11 may be used as the motor mechanism 10 for driving any one of the wheels 30, so as to improve the redundancy of the four-wheel drive system as a whole.
As a variation of this embodiment, in another embodiment, for the driving of any one wheel 30, a fourth driving gear meshed with the second driven gear 226 may be further provided in the second gear pair mechanism, and a first-stage gear reduction mechanism 21 and a single driving motor 12 are correspondingly added, and the added single driving motor 12, the first-stage gear reduction mechanism 21 and the fourth driving gear are sequentially connected in a transmission manner, so as to improve the redundancy of the whole four-wheel driving system.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A four wheel drive system, comprising:
four motor mechanisms (10) are arranged;
the four speed reducing mechanisms (20) are arranged, and each speed reducing mechanism (20) comprises a multi-stage gear speed reducing mechanism which is in transmission connection in sequence;
four wheels (30) provided;
the motor mechanism (10), the speed reducing mechanism (20) and the wheels (30) are arranged in a one-to-one correspondence mode, the output end of the motor mechanism (10) is in direct connection with the multi-stage input end transmission of the first stage in the gear speed reducing mechanism, and the multi-stage output end of the last stage in the gear speed reducing mechanism is in direct connection with the wheels (30) in a transmission mode.
2. A four-wheel drive system according to claim 1, wherein each of said reduction mechanisms (20) comprises a first gear reduction mechanism (21), a second gear reduction mechanism (22) and a third gear reduction mechanism (23) which are in transmission connection in sequence, wherein the output end of said motor mechanism (10) is in transmission connection with the input end of said first gear reduction mechanism (21), and the output end of said third gear reduction mechanism (23) is in transmission connection with said wheel (30).
3. A four-wheel drive system according to claim 2, wherein the first stage gear reduction mechanism (21), the second stage gear reduction mechanism (22), and the third stage gear reduction mechanism (23) are provided as a planetary gear mechanism.
4. A four-wheel drive system according to claim 3, wherein the sun gears of the first stage gear reduction mechanism (21), the second stage gear reduction mechanism (22) and the third stage gear reduction mechanism (23) are coaxially arranged.
5. A four-wheel drive system according to claim 3 or 4, characterized in that each of said motor mechanisms (10) comprises a dual drive motor (11), the output end of said dual drive motor (11) is in transmission connection with the sun gear of said first gear reduction mechanism (21); or
Each motor mechanism (10) comprises a single driving motor (12), and the output end of the single driving motor (12) is in transmission connection with the sun gear of the first-stage gear speed reducing mechanism (21).
6. A four-wheel drive system according to claim 2, wherein the first stage gear reduction mechanism (21) is provided as a first gear pair mechanism including a first driving gear (215) and a first driven gear (216) that are meshed, and the second stage gear reduction mechanism (22) and the third stage gear reduction mechanism (23) are each provided as a planetary gear mechanism;
the motor mechanism (10) comprises a first single driving motor, the output end of the first single driving motor is in transmission connection with the first driving gear (215), and the first driven gear (216) is in transmission connection with the sun gear of the second-stage gear speed reducing mechanism (22).
7. A four-wheel drive system according to claim 6, wherein said first gear-pair mechanism further comprises a second driving gear (217), said second driving gear (217) being in mesh with said first driven gear (216);
the motor mechanism (10) further comprises a second single driving motor, and the output end of the second single driving motor is in transmission connection with the second driving gear (217).
8. A four-wheel drive system according to claim 2, wherein the first stage gear reduction mechanism (21) and the third stage gear reduction mechanism (23) are each provided as a planetary gear mechanism, and the second stage gear reduction mechanism (22) is provided as a second gear pair mechanism including a third drive gear (225) and a second driven gear (226) which are meshed;
the planet carrier of the first-stage gear reduction mechanism (21) is in transmission connection with the third driving gear (225), and the second driven gear (226) is in transmission connection with the sun gear of the third-stage gear reduction mechanism (23).
9. A four-wheel drive system according to claim 8, wherein each of said motor mechanisms (10) comprises a single drive motor (12), the output of said single drive motor (12) being drivingly connected to the sun gear of said first stage gear reduction mechanism (21).
10. A working machine, characterized by comprising a four-wheel drive system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896880.5U CN217099653U (en) | 2022-04-18 | 2022-04-18 | Four-wheel drive system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220896880.5U CN217099653U (en) | 2022-04-18 | 2022-04-18 | Four-wheel drive system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217099653U true CN217099653U (en) | 2022-08-02 |
Family
ID=82582872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220896880.5U Active CN217099653U (en) | 2022-04-18 | 2022-04-18 | Four-wheel drive system and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217099653U (en) |
-
2022
- 2022-04-18 CN CN202220896880.5U patent/CN217099653U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20050221939A1 (en) | Hybrid drive unit | |
| CN211364239U (en) | Dual-motor driving system and vehicle | |
| EP3954562A1 (en) | Multi-mode electric drive system and vehicle | |
| JP2013036539A (en) | Drive unit for oil pump | |
| CN217099653U (en) | Four-wheel drive system and engineering machinery | |
| CN213291965U (en) | Pure electric vehicles bi-motor drive axle assembly | |
| CN113561748A (en) | Electric drive axle system | |
| CN114851831A (en) | Four-wheel drive system and engineering machinery | |
| CN217574828U (en) | Two-gear electric drive axle power system with motor placed on single side | |
| CN215826460U (en) | Two-gear high-speed-ratio electric drive axle structure | |
| CN215850710U (en) | Coaxial integrated double-motor double-speed-ratio electric drive assembly and electric vehicle | |
| JP2002039324A (en) | Hydromechanical transmission | |
| CN215826461U (en) | Double-motor external electric drive bridge structure | |
| CN113483060A (en) | Torque-dividing gear transmission speed reducer for main speed reducer of coaxial helicopter | |
| CN114435106A (en) | Electric drive axle structure for hybrid new energy automobile | |
| CN210161895U (en) | Hybrid power driving system and vehicle | |
| CN112392922A (en) | Transmission, integrated axle assembly and car | |
| CN111923717B (en) | Variable speed ratio hybrid power driving system for mining truck | |
| CN217074010U (en) | Electric drive axle assembly and vehicle | |
| CN217396222U (en) | Double-motor direct drive system and vehicle | |
| CN220947531U (en) | Hybrid power system and vehicle | |
| CN113733891B (en) | Dual-mode hybrid power transmission device | |
| CN217835331U (en) | Dual-motor variable speed electric drive axle system | |
| CN220947530U (en) | Hybrid power system and vehicle | |
| CN217401609U (en) | Double-motor direct drive system and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |