CN219446712U - Drive system, chassis, and work machine - Google Patents
Drive system, chassis, and work machine Download PDFInfo
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- CN219446712U CN219446712U CN202320345726.3U CN202320345726U CN219446712U CN 219446712 U CN219446712 U CN 219446712U CN 202320345726 U CN202320345726 U CN 202320345726U CN 219446712 U CN219446712 U CN 219446712U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model relates to the field of driving equipment, and provides a driving system, a chassis and a working machine. The power output end of the switch reluctance motor is in transmission connection with the power input end of the reduction gearbox, and the power output end of the reduction gearbox is in transmission connection with the transmission shaft. In the working process, the speed and the torque can be reduced through the reduction gearbox, so that the driving system can output large torque. When the high-speed output is needed, the switch reluctance motor itself has higher speed, and the control system of the working machine can directly control the switch reluctance motor to output the high speed. The driving system provided by the utility model can selectively output large torque or high rotation speed, and after the switched reluctance motor is used, the gearbox can be replaced by the reduction gearbox, and the reduction gearbox does not comprise a gear shifting mechanism, so that the problem of damage to the gear shifting mechanism caused by frequent gear shifting in the related art is solved.
Description
Technical Field
The utility model relates to the technical field of driving equipment, in particular to a driving system, a chassis and a working machine.
Background
The daily operation time of the working machines such as the loader is long, the traditional fuel oil type working machine has large fuel oil consumption during use, and the working cost is high while causing serious pollution to the environment. Compared with the fuel oil type working machine, the battery, motor and electric control cost of the pure electric machine is far lower than the fuel oil cost of the fuel oil type working machine in the long term.
For the driving system of the pure electric machine, in order to meet the requirement of higher working strength of the working machine, the driving system is required to output higher torque, and meanwhile, in order to improve the working efficiency of the working machine, the driving system is required to provide higher rotating speed, however, the motor used in the related technology cannot have the characteristics of both the higher torque and the higher rotating speed, so that the working machine is driven by adopting a mode of driving a two-gear gearbox by a single motor, the high traction force is provided by reducing the speed and increasing the torque of the first gear, the output rotating speed is improved by the second gear, and the high vehicle speed is realized.
Since the drive system in the related art is provided with the two-speed transmission, a driver is required to frequently switch gears between the first gear and the second gear in the working process, and the gear shifting mechanism is easy to damage over time.
Therefore, how to solve the problem that the gear shifting mechanism of the gearbox in the driving system consisting of the motor and the gearbox is easy to damage in the prior art is a technical problem which needs to be solved by the person skilled in the art.
Disclosure of Invention
The utility model provides a driving system, a chassis and a working machine, which are used for solving the defect that a gear shifting mechanism of a gear box in the driving system consisting of a motor and the gear box is easy to damage in the prior art.
The present utility model provides a drive system comprising:
a switched reluctance motor;
the power output end of the switch reluctance motor is in transmission connection with the power input end of the reduction box, and the power output end of the reduction box is in transmission connection with the transmission shaft.
According to the driving system provided by the utility model, the reduction gearbox is a secondary reduction gearbox or a tertiary reduction gearbox.
According to the driving system provided by the utility model, the reduction gearbox comprises:
the power output end of the switch reluctance motor is in transmission connection with the power input end of the input shaft, and a driving gear is arranged on the input shaft;
the power output end of the output shaft is in transmission connection with the transmission shaft, and a driven gear is arranged on the output shaft;
at least one intermediate shaft, each intermediate shaft is provided with an input gear and an output gear, the input gear on the intermediate shaft close to the input shaft is in meshed transmission with the driving gear, the pitch circle diameter of the input gear on the intermediate shaft close to the input shaft is larger than that of the driving gear, the output gear on the intermediate shaft close to the output shaft is in meshed transmission with the driven gear, the pitch circle diameter of the output gear on the intermediate shaft close to the output shaft is smaller than that of the driven gear, the output gear on the intermediate shaft in front is in meshed transmission with the input gear on the adjacent and subsequent intermediate shaft, and the pitch circle diameter of the output gear on the intermediate shaft in front is smaller than that of the input gear on the intermediate shaft in back.
According to the driving system provided by the utility model, the speed ratio of the reduction gearbox is 2.65-3.20.
According to the driving system provided by the utility model, the speed ratio of the reduction gearbox is 3.
According to the driving system provided by the utility model, both ends of the output shaft of the reduction gearbox are in transmission connection with the transmission shaft.
According to the driving system provided by the utility model, the two ends of the output shaft are provided with the output flanges.
According to the driving system provided by the utility model, a parking brake is further arranged in the reduction gearbox, and the parking brake is used for selectively limiting the rotation of the output flange.
The utility model also provides a chassis comprising a drive system as claimed in any one of the preceding claims.
The utility model also provides a work machine comprising a drive system as claimed in any one of the preceding claims or a chassis as claimed in the preceding claims.
The driving system provided by the utility model comprises a switch reluctance motor and a reduction gearbox. The switch reluctance motor is used as a power source, the power output end of the switch reluctance motor is in transmission connection with the power input end of the reduction gearbox, and the power output end of the reduction gearbox is in transmission connection with the transmission shaft. The switched reluctance motor can perform high torque output and high rotation speed output. In the working process, the speed and the torque can be reduced through the reduction gearbox, so that the driving system can output large torque. When the high-speed output is needed, the switch reluctance motor itself has higher speed, and the control system of the working machine can directly control the switch reluctance motor to output the high speed. The driving system provided by the utility model can selectively output large torque or high rotation speed, and after the switched reluctance motor is used, the gearbox can be replaced by the reduction gearbox, and the reduction gearbox does not comprise a gear shifting mechanism, so that the problem of damage to the gear shifting mechanism caused by frequent gear shifting in the related art is solved.
Further, in the chassis and the work machine provided by the present utility model, since the drive system as described above is provided, the same advantages as described above are provided.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a drive system provided by the present utility model;
reference numerals:
100: a switched reluctance motor; 200: a reduction gearbox; 210: an input shaft; 211: a drive gear; 220: an output shaft; 221: a driven gear; 230: an intermediate shaft; 231: an input gear; 232: an output gear; 300: and (5) outputting a flange.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The drive system of the present utility model is described below in connection with fig. 1.
The utility model provides a driving system, which comprises a switched reluctance motor 100 and a reduction box 200, wherein the power output end of the switched reluctance motor 100 is in transmission connection with the power input end of the reduction box 200, and the power output end of the reduction box 200 is used for being in transmission connection with a transmission shaft of a working machine.
The switched reluctance motor 100 is a double salient reluctance motor, which generates reluctance torque by using the reluctance minimum principle, has simple and firm structure, wide speed regulation range, excellent speed regulation performance, higher efficiency in the whole speed regulation range and high system reliability.
The switched reluctance motor 100 may be communicatively coupled to a controller of the work machine that controls the speed of travel, forward and reverse rotation of the switched reluctance motor 100 to control the speed of travel, forward and reverse rotation of the work machine when the switched reluctance motor 100 is coupled to the travel system of the work machine.
The switched reluctance motor 100 is connected with the reduction gearbox 200, and can reduce speed and increase torque through the reduction gearbox 200, so that the driving system outputs larger torque and provides larger working force for the working machine. The switched reluctance motor 100 has a high rotation speed characteristic, and can improve the working efficiency of the working machine.
Taking an electric loader as an example, the power output end of the reduction gearbox 200 can be in transmission connection with a front axle and/or a rear axle of the loader, and the switched reluctance motor 100 is used for driving the loader to move. When the loader needs a large insertion force, the controller of the loader controls the switched reluctance motor 100 to output the maximum torque, and simultaneously, the speed and the torque are reduced and increased through the reduction gearbox 200, so that the driving system outputs the maximum torque. When the starting current of the switched reluctance motor 100 is 15% of the rated current, the rated torque with the starting torque of 100% is obtained, and when the starting current is 30% of the rated value, the starting torque can reach 150% of the rated value. When the loader moves, the controller controls the switched reluctance motor 100 to rotate at an increased speed in order to increase the working efficiency of the loader, thereby driving the loader to move rapidly.
The driving system provided by the utility model can reduce speed and increase torque through the reduction gearbox 200, output higher torque, and can also control the switched reluctance motor 100 to output higher rotating speed through the performance of the switched reluctance motor 100 by the controller, thereby improving the working efficiency of the working machine.
In one embodiment of the present utility model, the reduction gearbox 200 may be a secondary reduction gearbox or a tertiary reduction gearbox, and the preferred embodiment is a secondary reduction gearbox, and the secondary reduction gearbox may reduce the shaft of the reduction gearbox 200, so as to meet the arrangement requirement of the working machine such as the loader, and reduce the space occupation.
Further, the speed ratio of the reduction gearbox 200 may be 2.65 to 3.20, for example, 2.7, 2.8, 2.9, 3, 3.1, etc.
The reduction gearbox 200 comprises an input shaft 210, an output shaft 220 and at least one intermediate shaft 230, wherein the input shaft 210 is used for being connected with the switched reluctance motor 100 and receiving power of the switched reluctance motor 100, the output shaft 220 is used for being connected with a transmission shaft, the intermediate shaft 230 is used for transmitting the power of the input shaft 210 to the output shaft 220, and the transmission shaft is driven by the output shaft 220 to operate.
The power output end of the switched reluctance motor 100 is in driving connection with the power input end of the input shaft 210, and a driving gear 211 is provided on the input shaft 210. The intermediate shafts 230 are provided with an input gear 231 and an output gear 232, the input gear 231 on the intermediate shaft 230 close to the input shaft 210 is in meshed transmission with the driving gear 211 on the input shaft 210, the output gear 232 on the intermediate shaft 230 close to the output shaft 220 is in meshed transmission with the driven gear 221 on the output shaft 220, the output gear 232 of the preceding intermediate shaft 230 is in meshed transmission with the input gear 231 of the adjacent and following intermediate shaft 230, the pitch circle diameter of the input gear 231 on the intermediate shaft 230 close to the input shaft 210 is larger than the pitch circle diameter of the driving gear 211 on the input shaft 210, the pitch circle diameter of the output gear 232 on the intermediate shaft 230 close to the output shaft 220 is smaller than the pitch circle diameter of the driven gear 221 on the output shaft 220, and the pitch circle diameter of the output gear 232 of the preceding intermediate shaft 230 is smaller than the pitch circle diameter of the input gear 231 on the adjacent and following intermediate shaft 230.
In a preferred embodiment, the reduction gearbox 200 is a two-stage reduction gearbox, and includes a box body, an input shaft 210, an intermediate shaft 230, and an output shaft 220, where the input shaft 210, the intermediate shaft 230, and the output shaft 220 are disposed in parallel.
One end of the input shaft 210 extends out of the box, one end of the input shaft 210 extending out of the box is a power input end, the power input end of the input shaft 210 is in transmission connection with the power output end of the switched reluctance motor 100, and the driving gear 211 is arranged at a part of the input shaft 210 located in the box and located close to the switched reluctance motor 100.
The intermediate shaft 230 is arranged in the box body, the intermediate shaft 230 is provided with an input gear 231 and an output gear 232, the input gear 231 on the intermediate shaft 230 is opposite to the driving gear 211 on the input shaft 210, the input gear 231 on the intermediate shaft 230 is meshed with the driving gear 211 on the input shaft 210 for transmission, and in order to achieve a speed reduction effect, the pitch circle diameter of the input gear 231 on the intermediate shaft 230 is larger than that of the driving gear 211 on the input shaft 210, and the pitch circle diameter are meshed to achieve primary speed reduction. The output gear 232 is disposed on the intermediate shaft 230 and may be located remotely from the switched reluctance motor 100.
At least one end of the output shaft 220 protrudes outside the casing, and the end of the output shaft 220 protruding outside the casing is an output end of the output shaft 220, which is used for driving connection with a transmission shaft of the working machine. The driven gear 221 is disposed on the output shaft 220 and opposite to the position of the output gear 232 of the intermediate shaft 230, and the driven gear 221 on the output shaft 220 is meshed with the output gear 232 on the intermediate shaft 230. In order to achieve the speed reduction effect, the pitch diameter of the output gear 232 on the intermediate shaft 230 is smaller than the pitch diameter of the driven gear 221 on the output shaft 220, and the two gears are meshed to achieve the two-stage speed reduction.
Further, the reduction gearbox 200 may also be a three-stage reduction gearbox, including a box body, an input shaft 210, a first intermediate shaft, a second intermediate shaft, and an output shaft 220.
One end of the input shaft 210 extends out of the box, one end of the input shaft 210 extending out of the box is a power input end, the power input end of the input shaft 210 is in transmission connection with the power output end of the switched reluctance motor 100, and the driving gear 211 is disposed at a portion of the input shaft 210 located in the box and located near the switched reluctance motor 100.
The first intermediate shaft is arranged in the box body and is positioned close to the input shaft 210, a first input gear and a first output gear are arranged on the first intermediate shaft, the first input gear on the first intermediate shaft is opposite to the position of the driving gear 211 on the input shaft 210, and the first input gear on the first intermediate shaft is meshed with the driving gear 211 on the input shaft 210 for transmission. To achieve the retarding effect, the pitch diameter of the first input gear on the first intermediate shaft is greater than the pitch diameter of the drive gear 211 on the input shaft 210, which mesh to achieve a primary speed reduction. The first output gear is disposed on the first intermediate shaft and may be located remotely from the switched reluctance motor 100.
The second intermediate shaft is disposed in the box and is located near the output shaft 220, a second input gear and a second output gear are disposed on the second intermediate shaft, the second input gear on the second intermediate shaft is opposite to the first output gear on the first intermediate shaft, and the second input gear on the second intermediate shaft is meshed with the first output gear on the first intermediate shaft for transmission. In order to achieve the speed reduction effect, the pitch circle diameter of the second input gear on the second intermediate shaft is larger than that of the first output gear on the first intermediate shaft, and the second input gear and the first output gear are meshed to achieve secondary speed reduction. The second output gear is disposed on the second intermediate shaft and may be located remotely from the switched reluctance motor 100.
At least one end of the output shaft 220 protrudes outside the casing, and the end of the output shaft 220 protruding outside the casing is an output end of the output shaft 220, which is used for driving connection with a transmission shaft of the working machine. The driven gear 221 is disposed on the output shaft 220 and opposite to the second output gear of the second intermediate shaft, and the driven gear 221 on the output shaft 220 is meshed with the second output gear on the second intermediate shaft. In order to achieve the speed reduction effect, the pitch diameter of the second output gear on the second intermediate shaft is smaller than the pitch diameter of the driven gear 221 on the output shaft 220, and the two gears are meshed to achieve three-stage speed reduction.
The transmission gears in the above embodiments may use spur gears or helical gears.
In one embodiment of the present utility model, both ends of the output shaft 220 of the reduction gearbox 200 may extend to the outside of the box body, and both ends are power output ends of the output shaft 220, wherein one end is used for being in transmission connection with a front axle of a chassis of the working machine, and the other end is used for being in transmission connection with Hou Qian of the chassis of the working machine, so as to drive the working machine to move.
Specifically, output flanges 300 may be respectively disposed at two ends of the output shaft 220, where the output flanges 300 are used for connecting with input flanges on the transmission shafts of the front axle and/or the rear axle.
In addition, a parking brake can be further arranged on the reduction gearbox 200, a control end of the parking brake can interact with the output flange 300, rotation of the output flange 300 can be selectively limited, and the effect of parking braking is achieved.
The driving system provided by the utility model adopts the structure that the high-speed switch reluctance motor 100 is matched with the reduction gearbox 200, can meet the requirements of operation machines such as an electric loader and the like on high speed and large traction force, has simple control, does not need gear shifting operation, greatly improves the reliability, reduces the cost and greatly reduces the operation intensity of a driver compared with a two-gear gearbox structure.
Further, the present utility model provides a chassis which can be a chassis of an electric working machine such as an electric excavator, an electric crane, an electric loader, etc., and which has the same advantages as those described above because of the provision of the drive system as described above.
Still further, the present utility model provides a working machine, which may be an electric excavator, an electric crane, an electric loader, or the like, having the same advantages as those described above due to the provision of the drive system as described above or the chassis as described above.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A drive system, comprising:
a switched reluctance motor (100);
the speed reduction box (200), the power output end of the switch reluctance motor (100) is in transmission connection with the power input end of the speed reduction box (200), and the power output end of the speed reduction box (200) is used for being in transmission connection with a transmission shaft.
2. The drive system according to claim 1, wherein the reduction gearbox (200) is a secondary reduction gearbox or a tertiary reduction gearbox.
3. The drive system according to claim 2, wherein the reduction gearbox (200) comprises:
the power output end of the switch reluctance motor (100) is in transmission connection with the power input end of the input shaft (210), and a driving gear (211) is arranged on the input shaft (210);
the power output end of the output shaft (220) is in transmission connection with the transmission shaft, and a driven gear (221) is arranged on the output shaft (220);
at least one intermediate shaft (230), each intermediate shaft (230) is provided with an input gear (231) and an output gear (232), the input gear (231) on the intermediate shaft (230) close to the input shaft (210) is in meshed transmission with the driving gear (211), the pitch circle diameter of the input gear (231) on the intermediate shaft (230) close to the input shaft (210) is larger than that of the driving gear (211), the output gear (232) on the intermediate shaft (230) close to the output shaft (220) is in meshed transmission with the driven gear (221), the pitch circle diameter of the output gear (232) on the intermediate shaft (230) close to the output shaft (220) is smaller than that of the driven gear (221), the pitch circle diameter of the output gear (232) on the intermediate shaft (230) in front is in meshed transmission with the input gear (231) on the intermediate shaft (230) in front, and the pitch circle diameter of the output gear (232) on the intermediate shaft (230) in front is smaller than that of the pitch circle diameter of the intermediate shaft (230) in back.
4. A drive system according to any one of claims 1-3, characterized in that the speed ratio of the reduction gearbox (200) is 2.65-3.20.
5. The drive system according to claim 4, characterized in that the reduction gearbox (200) has a speed ratio of 3.
6. A drive system according to claim 3, characterized in that both ends of the output shaft (220) of the reduction gearbox (200) are adapted for driving connection with the drive shaft.
7. The drive system according to claim 6, characterized in that both ends of the output shaft (220) are provided with output flanges (300).
8. The drive system of claim 7, wherein a parking brake is further provided within the reduction gearbox (200) for selectively limiting rotation of the output flange (300).
9. Chassis, characterized by comprising a drive system according to any of claims 1-8.
10. A work machine comprising a drive system according to any one of claims 1-8 or a chassis according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320345726.3U CN219446712U (en) | 2023-02-28 | 2023-02-28 | Drive system, chassis, and work machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320345726.3U CN219446712U (en) | 2023-02-28 | 2023-02-28 | Drive system, chassis, and work machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219446712U true CN219446712U (en) | 2023-08-01 |
Family
ID=87410122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320345726.3U Active CN219446712U (en) | 2023-02-28 | 2023-02-28 | Drive system, chassis, and work machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219446712U (en) |
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2023
- 2023-02-28 CN CN202320345726.3U patent/CN219446712U/en active Active
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