CN109720192B - Multi-mode switching power transmission device for loader - Google Patents
Multi-mode switching power transmission device for loader Download PDFInfo
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- CN109720192B CN109720192B CN201910040515.7A CN201910040515A CN109720192B CN 109720192 B CN109720192 B CN 109720192B CN 201910040515 A CN201910040515 A CN 201910040515A CN 109720192 B CN109720192 B CN 109720192B
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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
- Y02T10/62—Hybrid vehicles
Abstract
The invention provides a multi-mode switching power transmission device for a loader, which comprises an input member, an output member, an electric transmission assembly, a planetary row power assembly, a forward and backward gear assembly, a clutch component and a brake, wherein the input member is connected with the forward and backward gear assembly; the electric drive assembly is connected with a planetary power train that is connected with the output member, and the clutch assembly and brake provide a continuous forward or reverse gear ratio between the input member and the output member. The invention switches the power transmission device between three gears of an electric mechanical transmission mode and a mechanical transmission mode, realizes high-efficiency accurate transmission and achieves the functions of energy conservation and emission reduction.
Description
Technical Field
The invention relates to the field of transmission speed changers, in particular to a multi-mode switching power transmission device for a loader.
Background
The loader has the advantages of high speed, good maneuverability, high efficiency and the like, but also has the defects of high energy consumption, high noise, more emission and the like, and the energy-saving problem of the loader is widely concerned at present with environmental pollution and energy shortage. The performance of the engine is improved, a novel transmission technology is adopted, and the integration of the engine, the power transmission device and the traveling system is an alternative.
The composite transmission technology is a bright point in the development of novel transmission technologies, and especially the composite transmission technology using multi-mode switching is increasingly concerned due to the fact that the composite transmission technology can be suitable for requirements of different working conditions. The engine, the power transmission device and the traveling system are also an important idea for integral research, and when the traveling system changes, the power transmission device automatically adjusts the transmission ratio, so that the engine runs on the curve with the optimal dynamic property or the optimal fuel economy, and the production efficiency is improved.
The intelligent control technology takes a computer technology and an automatic control technology as cores and integrates a multi-disciplinary technology, so that the automatic control of the engineering machinery becomes possible, the labor intensity of a driver is reduced while the efficiency of the engine is improved, and the effects of energy conservation and emission reduction are achieved. The existing transmission technology usually adopts a single energy source for power transmission, has poor power recovery capability and cannot completely meet the requirements of multi-working-condition energy-saving and high-efficiency transmission.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a multi-mode switching power transmission device for a loader, which is used for switching three gears of an electric mechanical transmission mode and a mechanical transmission mode, and achieves the functions of energy conservation and emission reduction while realizing high-efficiency accurate transmission.
The present invention achieves the above-described object by the following technical means.
A multi-mode switching power transmission device for a loader comprises an input member, an output member, an electric transmission assembly, a planet row power assembly, a forward and backward gear assembly, a clutch assembly and a brake, wherein the input member is connected with the forward and backward gear assembly, and the clutch assembly is used for respectively connecting the forward and backward gear assembly to the output member, the planet row power assembly and the electric transmission assembly; the electric drive assembly is connected with a planetary power train that is connected with the output member, and the clutch assembly and brake provide a continuous forward or reverse gear ratio between the input member and the output member.
Further, providing a drive pattern of forward or reverse between the input member and the output member by selectively controlling engagement of the clutch assembly and the brake comprises: mechanical-electrical drive and mechanical drive.
Further, the clutch assembly includes a first clutch for selectively connecting the forward and reverse range assembly to the planetary gearset for common rotation; the second clutch is for selectively connecting the forward and reverse gear assembly to the electric drive assembly for common rotation; and controlling the first clutch to be engaged with the second clutch to provide forward or backward mechanical electric transmission between the input member and the output member.
Further, the planetary power train comprises a planetary gear train and a reduction gear pair of the speed change unit, and the first clutch is used for selectively connecting the forward and backward gear train to a sun gear of the planetary gear train for common rotation; the planet carrier of the planetary gear train is connected with the output component; the output end of the electric transmission assembly is connected with a gear ring of the planetary gear train through a reduction gear pair of the speed change unit.
Further, the clutch assembly further includes a third clutch for selectively connecting the forward and reverse gear assembly to the output member for common rotation; the brake is used for selectively connecting the gear ring of the planetary gear train to a fixed piece; selectively controlling engagement of the second clutch, the third clutch, and the brake provides forward or reverse mechanical transmission between the input member and the output member.
Further, engaging the second clutch and brake and engaging the third clutch and brake, respectively, provides a different mechanical drive between the input member and the output member, respectively, in forward or reverse.
And the power output assembly is connected with the input component and is used for driving other working devices.
Further, the electric drive assembly includes a generator, a battery, an inverter, and a drive motor, the second clutch for selectively connecting the forward and reverse gear assembly to the generator for common rotation; the generator is connected with the driving motor through an inverter, and the inverter is connected with the battery; the driving motor is connected with the planet row power assembly.
Further, in the mechanical electric transmission process, the battery is used as an auxiliary power source of the input member and is used for driving the driving motor to run; the drive motor stores electric energy in the battery when the vehicle is braked.
The invention has the beneficial effects that:
1. the multi-mode switching power transmission device for the loader is capable of switching three gears between an electric mechanical transmission mode and a mechanical transmission mode, achieving the functions of energy conservation and emission reduction while realizing efficient and accurate transmission.
2. The multi-mode switching power transmission device for the loader can recover braking energy at multiple gears and improve the energy utilization rate of a transmission system.
Drawings
Fig. 1 is a schematic diagram of a multi-mode switching power transmission device for a loader according to the present invention.
In the figure:
1-an input shaft; 2-an electric drive assembly; 2-1-generator; 2-2-cell; 2-3-inverter; 2-4-driving the motor; 3-a second clutch; 4-forward and reverse gear assembly; 4-1-reverse gear speed-increasing driven gear; 4-2-reverse speed increasing driving gear; 4-3-a shifting gear with a spline sleeve; 4-4-reverse reduction drive gear; 4-5-reverse idler; 5-a speed-increasing gear pair of the speed-changing unit; 6-intermediate shaft; 7-a first clutch; 8-a third clutch; 9-direct gear reduction gear pair; 10-an output shaft; 11-a planetary power assembly; 11-1-a reduction gear pair of the speed change unit; 11-2-brake; 11-3-gear ring; 11-4-planet carrier; 11-5-sun gear; 12-a power take-off assembly; 12-1-power take-off shaft; 12-2-power output gear pair.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
As shown in fig. 1, the multi-mode switching power transmission device for a loader according to the present invention includes an input shaft 1, a forward/reverse gear assembly 4, an intermediate shaft 6, an electric power transmission assembly 2, a planetary gear power assembly 11, an output shaft 10, a power output assembly 12, a clutch component, and a brake 11-2;
the forward and backward gear assembly 4 comprises a reverse speed-increasing driven gear 4-1, a reverse speed-increasing driving gear 4-2, a gear-shifting gear 4-3 with a spline sleeve, a reverse speed-reducing driving gear 4-4 and a reverse idler gear 4-5; the reverse speed increasing driving gear 4-2 is meshed with the reverse speed increasing driven gear 4-1, and the reverse speed increasing driving gear 4-2 is connected with the input shaft 1; the reverse idler gear 4-5 is meshed with the reverse speed reduction driving gear 4-4, and the reverse speed increasing driven gear 4-1 and the reverse speed reduction driving gear 4-4 rotate together; the splined shifting gears 4-3 allow for the same or opposite direction of rotation between the input shaft 1 and the intermediate shaft 6. When the shifting gear 4-3 with the spline sleeve is set to be engaged in the invention, namely the shifting gear 4-3 with the spline sleeve connects the input shaft 1 with the intermediate shaft 6, the same steering between the input shaft 1 and the intermediate shaft 6 is realized. When the gear shifting gear 4-3 with the spline sleeve is not engaged, namely the gear shifting gear 4-3 with the spline sleeve is meshed with the reverse gear idler gear 4-5, the gear shifting gear 4-3 with the spline sleeve drives the intermediate shaft 6 to rotate, and the opposite rotation between the input shaft 1 and the intermediate shaft 6 is realized.
The electric drive assembly 2 comprises a generator 2-1, a battery 2-2, an inverter 2-3 and a drive motor 2-4, and the second clutch 3 is used for selectively connecting the forward and backward gear assembly 4 to the generator 2-1 for common rotation; the generator 2-1 is connected with a driving motor 2-4 through an inverter 2-3, and the inverter 2-3 is connected with a battery 2-2; the driving motors 2-4 are connected with a planetary row power assembly 11. And a second clutch 3 is arranged between the generator 2-1 and the left transition shaft. The left transition shaft is connected with an intermediate shaft 6 through a speed-increasing gear pair 5 of the speed-changing unit.
The planet row power assembly 11 comprises a speed change unit reduction gear pair 11-1, a gear ring 11-3, a planet carrier 11-4 and a sun gear 11-5; the output end of the driving motor 2-4 is connected with a gear ring 11-3 through a reduction gear pair 11-1 of a speed changing unit, the gear ring 11-3, a planet carrier 11-4 and a sun gear 11-5 form a planetary gear train, the sun gear 11-5 is connected with an intermediate shaft 6 through a first clutch 7, and the planet carrier 11-4 is connected with an output shaft 10. The brake 11-2 is used for selectively connecting the gear ring 11-3 to the fixed part;
the left transition shaft is connected with a right transition shaft through a third clutch 8, the right transition shaft is connected with an output shaft 10 through a direct gear reduction gear pair 9, namely, the third clutch 8 is used for selectively connecting the intermediate shaft 6 to the output shaft 10 for common rotation;
the power output assembly 12 comprises a power output shaft 12-1 and a power output gear pair 12-2. The power output shaft 12-1 is connected with the input shaft 1 through a power output gear pair 12-2.
By selectively controlling the engagement of the first clutch 7, the second clutch 3, the third clutch 8, and the brake 11-2, a transmission manner that provides forward or reverse between the input member and the output member includes: mechanical-electrical drive and mechanical drive. As shown in table 1, the following examples are specific as follows:
when the gear-shifting gear 4-3 with the spline sleeve, the first clutch 7 and the second clutch 3 are engaged, the gear-shifting gear is marked as a forward first gear, the forward first gear is mechanical and electric transmission, and the power of an engine is divided into two paths after being transmitted to the intermediate shaft 6 through the input shaft 1: one path is directly transmitted to the sun gear 11-5, the other path is transmitted to the electric transmission assembly 2 through the speed-changing unit speed-increasing gear pair 5, mechanical energy is converted into electric energy, the electric energy drives the driving motor 2-4 to operate, the electric energy is converted into mechanical energy, the speed-changing unit speed-reducing gear pair 11-1 is driven to operate, power is transmitted to the gear ring 11-3, mechanical power flow transmitted to the sun gear 11-5 and electric power flow transmitted to the gear ring 11-3 converge to the planet carrier 11-4, and the power is output through the output shaft 10.
When the gear shifting gear 4-3 with the spline sleeve, the first clutch 7 and the brake 11-2 are engaged, the gear shifting gear is marked as a forward second gear which is mechanical transmission, the power of an engine is directly transmitted to the sun gear 11-5 through the input shaft 1 and the intermediate shaft 6, and the power is finally output from the output shaft 10 through the planet carrier 11-4 because the gear ring 11-3 is fixed at the moment.
When the gear-shifting gear 4-3 with a spline sleeve, the third clutch 8 and the brake 11-2 are engaged, the gear-shifting gear is marked as a forward third gear, the forward third gear is mechanical transmission, and the power of the engine is directly transmitted to the output shaft 10 through the input shaft 1, the intermediate shaft 6, the speed-changing unit speed-increasing gear pair 5 and the direct gear speed-reducing gear pair 9.
When the gear shifting gears 4-3 with the spline sleeves in the forward first gear, the forward second gear and the forward third gear are separated, the gear shifting gears are correspondingly changed into a reverse first gear, a reverse second gear and a reverse third gear.
When the first clutch 7, the second clutch 3, and the third clutch 8 are all disengaged, the idle gear is established.
TABLE 1 working schematic diagram of main elements
Note: ". tangle-solidup" indicates engagement of the elements and "Δ" indicates disengagement of the elements.
In table, C1A first clutch 7 is shown; c2The second clutch 3 is indicated; c3A third clutch 8 is shown; b represents a brake 11-2; s is denoted as a splined shifting gear 4-3.
In the mechanical electric transmission process, the battery 2-2 is used as an auxiliary power source of an input member and is used for driving the driving motor 2-4 to run; when the vehicle is braked, the drive motor 2-4 stores electric energy into the battery 2-2. The method specifically comprises the following steps:
when the vehicle is braked in a forward first gear, braking energy reaches a planetary gear power assembly 11 through an output shaft 10, and a part of power drives a generator 2-1 to operate through an intermediate shaft 6 and a speed-increasing gear pair 5 of a speed-changing unit so as to store energy for a battery; the other part of the power drives a driving motor 2-4 to operate through a reduction gear pair 11-1 of the speed changing unit, and energy is stored for the battery.
When the vehicle brakes in the forward second gear, the brake 11-2 is separated, and the braking energy reaches the reduction gear pair 11-1 of the speed changing unit through the output shaft 10 and the planet row power assembly 11 to drive the driving motor 2-4 to operate so as to store energy for the battery.
When the vehicle is braked in the forward third gear, the second clutch 3 is engaged, and the braking energy drives the generator 2-1 to operate through the output shaft 10 and the direct gear reduction gear pair 9 to store energy for the battery.
When the engine is started and the power of the engine is insufficient, the battery 2-2 releases energy to serve as an auxiliary power source to drive the driving motor 2-4 to operate.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (7)
1. The multi-mode switching power transmission device for the loader is characterized by comprising an input member, an output member, an electric transmission assembly (2), a planetary gear power assembly (11), a forward and reverse gear assembly (4), a clutch assembly and a brake (11-2), wherein the input member is connected with the forward and reverse gear assembly (4), and the clutch assembly is used for connecting the forward and reverse gear assembly (4) to the output member, the planetary gear power assembly (11) and the electric transmission assembly (2) respectively; the electric drive assembly (2) is connected with a planetary power assembly (11), the planetary power assembly (11) is connected with an output member, and the clutch assembly and the brake (11-2) provide a continuous forward or backward transmission ratio between the input member and the output member; providing a forward or reverse drive between an input member and an output member by selectively controlling engagement of the clutch assembly and a brake (11-2) comprises: mechanical electric drive and mechanical drive; the clutch assembly comprises a first clutch (7) and a second clutch (3), the first clutch (7) being for selectively connecting the forward and reverse gear assembly (4) to the planetary line powertrain (11) for common rotation; the second clutch (3) is used for selectively connecting the forward and reverse gear assembly (4) to the electric transmission assembly (2) for common rotation; and controlling the first clutch (7) to be engaged with the second clutch (3) to provide mechanical electric transmission of forward or backward movement between the input member and the output member.
2. The multiple-mode-switching power transmission for a loader according to claim 1 wherein the planetary line power train (11) includes a planetary gear train and a speed change unit reduction gear set (11-1), the first clutch (7) being for selectively connecting the forward-reverse gear train (4) to a sun gear of the planetary gear train for common rotation; the planet carrier of the planetary gear train is connected with the output component; the output end of the electric transmission assembly (2) is connected with a gear ring of the planetary gear train through a reduction gear pair (11-1) of the speed changing unit.
3. The multiple-mode-switching power transmission for a loader according to claim 2 wherein the clutch assembly further comprises a third clutch (8), the third clutch (8) for selectively connecting the forward-reverse gear assembly (4) to the output member for common rotation; the brake (11-2) is used for selectively connecting the gear ring of the planetary gear train to a fixed piece; the engagement of the second clutch (3), the third clutch (8) and the brake (11-2) is selectively controlled, and the mechanical transmission of forward or backward movement between the input member and the output member is provided.
4. A multiple-mode-switching power transmission for a loader as claimed in claim 3 wherein engaging the second clutch (3) and brake (11-2), engaging the third clutch (8) and brake (11-2) provides a different respective mechanical transmission of forward or reverse between the input member and the output member.
5. The multi-mode-switching power transmission for a loader according to any one of claims 1-4, further comprising a power take-off assembly (12), the power take-off assembly (12) being connected to the input member for driving other working devices.
6. The multi-mode-switching power transmission for a loader according to any one of claims 1 to 4 wherein the electric drive assembly (2) includes a generator (2-1), a battery (2-2), an inverter (2-3) and a drive motor (2-4), and the second clutch (3) is for selectively connecting the forward-reverse gear assembly (4) to the generator (2-1) for common rotation; the generator (2-1) is connected with a driving motor (2-4) through an inverter (2-3), and the inverter (2-3) is connected with a battery (2-2); the driving motors (2-4) are connected with the planet row power assembly (11).
7. The multi-mode switching power transmission device for a loader according to claim 6, wherein the battery (2-2) serves as an auxiliary power source of an input member for driving the driving motor (2-4) to operate during the mechanical-electric power transmission; the drive motor (2-4) stores electric energy into the battery (2-2) when the vehicle is braked.
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| CN201910040515.7A CN109720192B (en) | 2019-01-16 | 2019-01-16 | Multi-mode switching power transmission device for loader |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910040515.7A CN109720192B (en) | 2019-01-16 | 2019-01-16 | Multi-mode switching power transmission device for loader |
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| CN109720192A CN109720192A (en) | 2019-05-07 |
| CN109720192B true CN109720192B (en) | 2021-07-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2447571A1 (en) * | 2010-11-02 | 2012-05-02 | Aisin Seiki Kabushiki Kaisha | Tranmission for hybrid vehicle |
| CN204547733U (en) * | 2015-03-07 | 2015-08-12 | 合肥工业大学 | Two gear variable speed drive systems of the plug-in hybrid-power automobile of single drive motor |
| CN106364306A (en) * | 2016-10-21 | 2017-02-01 | 奇瑞汽车股份有限公司 | Power system of hybrid power automobile and operating method of power system |
| CN108032725A (en) * | 2018-01-10 | 2018-05-15 | 沈阳大学 | One kind combination train formula hybrid power system for automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105835683B (en) * | 2016-02-02 | 2017-12-29 | 苏州凯博易控驱动技术有限公司 | Electrohydraulic mixed power drive system |
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- 2019-01-16 CN CN201910040515.7A patent/CN109720192B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2447571A1 (en) * | 2010-11-02 | 2012-05-02 | Aisin Seiki Kabushiki Kaisha | Tranmission for hybrid vehicle |
| CN204547733U (en) * | 2015-03-07 | 2015-08-12 | 合肥工业大学 | Two gear variable speed drive systems of the plug-in hybrid-power automobile of single drive motor |
| CN106364306A (en) * | 2016-10-21 | 2017-02-01 | 奇瑞汽车股份有限公司 | Power system of hybrid power automobile and operating method of power system |
| CN108032725A (en) * | 2018-01-10 | 2018-05-15 | 沈阳大学 | One kind combination train formula hybrid power system for automobile |
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