CN107654606B - Laminated planetary gear type hydraulic mechanical stepless speed changer - Google Patents
Laminated planetary gear type hydraulic mechanical stepless speed changer Download PDFInfo
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- CN107654606B CN107654606B CN201711101166.2A CN201711101166A CN107654606B CN 107654606 B CN107654606 B CN 107654606B CN 201711101166 A CN201711101166 A CN 201711101166A CN 107654606 B CN107654606 B CN 107654606B
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- clutch
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- planet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
Abstract
Aiming at the structural problem of a double-row planetary gear train of a hydraulic mechanical continuously variable transmission, the invention creatively uses a laminated planetary gear to realize confluence, and is characterized in that: the power is transmitted to the hydraulic circuit and the mechanical circuit through the power input shaft (19) by the meshing gear pair A (1), the meshing gear pair B (2) and the meshing gear pair D (3) respectively. The planetary gear E1 (8) and the planetary gear E2 (9) are meshed with each other, a common planetary carrier (11) and an inner gear ring (12) are arranged in a laminated mode, a planetary gear busbar is formed, hydraulic power is respectively transmitted to a sun gear F1 (10) and a sun gear F2 (20), mechanical power is transmitted to the common planetary carrier (11) through a clutch C4 (18), a clutch C3 (17) and a meshing gear pair G (14), and power is output through the inner gear ring (12) through planetary gear busbar.
Description
Technical Field
The invention relates to a stepless speed changer, in particular to a laminated planetary gear type hydraulic mechanical stepless speed changer, belonging to the field of mechanical transmission.
Background
The transmission principle of the hydraulic mechanical stepless speed changer is that engine power is split through a fixed-axis gear train and then torque is converged through a planetary gear train, and the speed changer can realize the performance of hydraulic mechanical converging stepless speed change output of a high-power speed changer through the stepless output characteristic of a low-power hydraulic element. The current confluence scheme of the hydraulic mechanical stepless speed changer basically realizes continuous stepless speed output of each section by switching the positive phase and the negative phase of a double-row planetary gear train, and the speed changer has larger structural size and complex planetary row supporting and positioning structures, so that the space layout of the speed changer in practical application needs to be further improved.
The invention aims to provide a continuously variable transmission which has a compact structure, realizes a confluence mode by utilizing a single-row planetary gear train and can realize multi-section continuous wide range and high efficiency.
Disclosure of Invention
As described above, in order to solve the problems in the prior art, the present invention provides a laminated planetary gear type hydromechanical continuously variable transmission, characterized in that: the planet gears E1 (8) and E2 (9) are meshed with each other by adopting a lamination installation and sharing a common planet carrier (11), the planet gears E2 (9) are meshed with the sun gear F1 (10), the planet gears E2 (9) and the inner gear ring (12) to form a planet gear busbar, and meanwhile, the sun gear F2 (20), the planet gears E1 (8) and the inner gear ring (12) are meshed with each other to form the planet gear busbar.
In the laminated planetary gear type hydraulic mechanical continuously variable transmission, a power input shaft (19) is connected with a variable pump (4) through a meshing gear pair A (1), a motor (5) is connected with a clutch outer hub (15), a sun gear F2 (20) is connected with a clutch C1 (6), and a sun gear F1 (10) is connected with a clutch C2 (7).
In the laminated planetary gear type hydromechanical continuously variable transmission, a power input shaft (19) is connected with a clutch C4 (18) through a meshing gear pair B (2), and the power input shaft (19) is connected with a clutch C3 (17) through a meshing gear pair D (3).
For the laminated planetary gear type hydraulic mechanical stepless speed changer, a common planet carrier (11) is connected with a shaft (16) through a meshing gear pair G (14), a brake (13) is arranged on the outer side of the common planet carrier (11), and the left side of the shaft (16) is connected with inner friction discs of a clutch C4 (18) and a clutch C3 (17).
Drawings
Fig. 1 is a schematic diagram of a stacked planetary gear type hydromechanical continuously variable transmission.
In the accompanying drawings: 1. meshing gear pair A2, meshing gear pair B3, meshing gear pair D4, variable displacement pump 5, motor 6, clutch C1 7, clutch C2 8, planet gears E1 9, planet gears E2 10, sun gear F1 11, common carrier 12, ring gear 13, brake 14, meshing gear pair G15, clutch outer hub 16, shaft 17, clutch C3, clutch C4, power input shaft 20, sun gear F2.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in the figure, the planetary gear type hydromechanical continuously variable transmission is provided, wherein a power input shaft (19) transmits power to a variable pump (4) through a fixed gear train meshing gear pair a (1), the power is transmitted to a clutch outer hub (15) through a hydraulic circuit by a motor (5), hydraulic power can be transmitted to a sun gear F1 (10) when a clutch C1 (6) is combined, and hydraulic power can be transmitted to a sun gear F2 (20) when a clutch C2 (7) is combined.
As shown in the figure, the planetary gear type hydromechanical continuously variable transmission is provided, wherein a power input shaft (19) can be respectively transmitted to a clutch C4 (18) through a fixed-axis gear train meshing gear pair B (2), and transmitted to a clutch C3 (17) through a fixed-axis gear train meshing gear pair D (3), and power is transmitted to a common planet carrier (11) through a meshing gear pair G (14) by a shaft (16), and the process power is transmitted to mechanical power.
As shown in the figure, the planetary gear type hydromechanical continuously variable transmission is laminated, when the vehicle starts forward and is in the first forward section, the clutch C1 (6) is combined, the clutch C2 (7), the clutch C3 (17) and the clutch C4 (18) are separated, the brake (13) is locked, hydraulic power is transmitted to the sun gear F1 (10) through the clutch C1 (6), the hydraulic power is transmitted to the annular gear (12) through meshing with the planet gear E2 (9) and meshing with the planet gear E1 (8), the power is output through the annular gear (12), and when the displacement of the variable pump (4) is controlled to continuously and incrementally change, the output of the pure hydraulic continuously variable transmission in the first forward section can be realized.
As shown in the figure, when the vehicle is in the second forward section, the clutch C3 (17) is combined with the clutch C1 (6), the clutch C2 (7) is separated from the clutch C4 (18), the brake (13) is unlocked, hydraulic power is transmitted to the sun gear F1 (10) through the clutch C1 (6), the meshing gear pair D (3) transmits power, mechanical power is transmitted to the planet gear E2 (9) through the common planet carrier (12), the power is transmitted to the annular gear (12) through the planet gears E1 which are arranged in a stacked manner, and finally, the power is output through the annular gear (12), and when the displacement of the variable pump (4) is controlled to continuously decrement, the planet rows are in reverse phase change at the moment, so that the output of the hydraulic mechanical stepless speed change in the second forward section can be realized.
As shown in the figure, when the vehicle is in the third forward section, the clutch C3 (17) is separated from the clutch C1 (6), the clutch C2 (7) is combined with the clutch C4 (18), the brake (13) is unlocked, hydraulic power is transmitted to the sun gear F2 (20) through the clutch C2 (7), the meshing gear pair B (2) transmits power, the mechanical power is transmitted to the planetary gear E1 (8) through the common planet carrier (12), finally, the power is transmitted to the annular gear (12) through the confluence of the planet rows, the power is output through the annular gear (12), and when the displacement of the variable pump (4) is controlled to continuously change in an increment, the planet rows are in positive phase change at the moment, and the output of the third forward section hydraulic mechanical stepless speed change can be realized.
As shown in the figure, when the vehicle is reversed, the clutch C2 (7) is combined, the clutch C1 (6), the clutch C3 (17) and the clutch C4 (18) are separated, the brake (13) is locked, hydraulic power is transmitted to the sun gear F2 (20) through the clutch C2 (7), then the planetary gear E1 (8) is meshed, the power is transmitted to the annular gear (12), the annular gear (12) outputs the power, and when the displacement of the variable pump (4) is controlled to continuously change in reverse offset, the output of the reverse pure hydraulic stepless speed change can be realized.
As shown in the figure, the laminated planetary gear type hydraulic mechanical stepless speed changer can realize continuous increment and decrement change due to the displacement control of the variable pump (4), and can realize constant-speed continuous switching of the first section and the second section after being matched with the positive and negative phase planetary gears positioned in the second section and the third section, thereby realizing stepless speed change output among the forward sections of the vehicle.
As shown in the figure, the laminated planetary gear type hydraulic mechanical stepless speed changer adopts the design that the laminated planetary gears share a planet carrier and an annular gear, can finish the change of the positive and negative phases of a bus bar, has a more compact structure compared with the positive and negative phases of the traditional double-row planetary gear bus bar mode, can realize constant-speed switching among multiple zones, and realizes stepless output.
Finally, it is pointed out that the above embodiments are only intended to illustrate the inventive concept of the present invention and are not intended to be limiting, although the invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various modifications and equivalent substitutions can be made in the inventive concept of the invention without departing from the spirit and scope of the inventive concept, which is intended to be covered by the scope of the appended claims.
Claims (1)
1. A control method of a laminated planetary gear type hydraulic mechanical continuously variable transmission, characterized by comprising: the planet gears E1 (8) and the planet gears E2 (9) are meshed with each other, are installed in a lamination mode and share a common planet carrier (11), the planet gears E2 (9) are meshed with the sun gear F1 (10), the planet gears E2 (9) and the inner gear ring (12) to form a planet gear busbar, and meanwhile the sun gear F2 (20), the planet gears E1 (8) and the inner gear ring (12) are meshed with each other to form the planet gear busbar; the power input shaft (19) is connected with the variable pump (4) through the meshing gear pair A (1), the motor (5) is connected with the clutch outer hub (15), the sun gear F2 (20) is connected with the clutch C1 (6), and the sun gear F1 (10) is connected with the clutch C2 (7); the power input shaft (19) is connected with the clutch C4 (18) through the meshing gear pair B (2), and the power input shaft (19) is connected with the clutch C3 (17) through the meshing gear pair D (3); the common planet carrier (11) is connected with the shaft (16) through the meshing gear pair G, a brake (13) is arranged on the outer side of the common planet carrier (11), and the left side of the shaft (16) is connected with inner friction discs of the clutch C4 (18) and the clutch C3 (17); when the vehicle starts forward and is in a first forward section, the clutch C1 (6) is combined, the clutch C2 (7), the clutch C3 (17) and the clutch C4 (18) are separated, the brake (13) is locked, hydraulic power is transmitted to the sun gear F1 (10) through the clutch C1 (6), the power is transmitted to the annular gear (12) through meshing with the planet gear E2 (9) and meshing with the planet gear E1 (8), the power is output through the annular gear (12), and when the displacement of the variable pump (4) is controlled to continuously change in an increment mode, the output of pure hydraulic stepless speed change in the first forward section can be realized; when the vehicle moves forward and is in a second forward section, the clutch C3 (17) is combined with the clutch C1 (6), the clutch C2 (7) is separated from the clutch C4 (18), the brake (13) is unlocked, hydraulic power is transmitted to the sun gear F1 (10) through the clutch C1 (6), the meshing gear pair D (3) transmits power, mechanical power is transmitted to the planetary gear E2 (9) through the common planet carrier (11), the power is transmitted to the annular gear (12) through the planet gears E1 which are arranged in a stacked mode, finally, the power is transmitted to the annular gear (12) through the confluence of the planet rows, and the power is output through the annular gear (12), when the displacement of the variable pump (4) is controlled to continuously decrement, the planet rows are in reverse phase change, and stepless speed change output of the hydraulic machinery in the second forward section can be realized; when the vehicle is in the third forward section, the clutch C3 (17) is separated from the clutch C1 (6), the clutch C2 (7) is combined with the clutch C4 (18), the brake (13) is unlocked, hydraulic power is transmitted to the sun gear F2 (20) through the clutch C2 (7), the meshing gear pair B (2) transmits power, the public planet carrier (11) transmits mechanical power to the planet gear E1 (8), finally, the power is transmitted to the annular gear (12) through the confluence of the planet rows, the annular gear (12) outputs power, and when the displacement of the variable pump (4) is controlled to continuously and incrementally change, the planet rows are in positive phase change at the moment, so that the stepless speed change output of the hydraulic machinery in the third forward section can be realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101166.2A CN107654606B (en) | 2017-11-10 | 2017-11-10 | Laminated planetary gear type hydraulic mechanical stepless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101166.2A CN107654606B (en) | 2017-11-10 | 2017-11-10 | Laminated planetary gear type hydraulic mechanical stepless speed changer |
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| Publication Number | Publication Date |
|---|---|
| CN107654606A CN107654606A (en) | 2018-02-02 |
| CN107654606B true CN107654606B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711101166.2A Active CN107654606B (en) | 2017-11-10 | 2017-11-10 | Laminated planetary gear type hydraulic mechanical stepless speed changer |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152511A (en) * | 2017-06-14 | 2017-09-12 | 重庆大学 | Hybrid mechanical-hydraulic is combined buncher |
| CN109764107B (en) * | 2019-01-16 | 2021-08-03 | 江苏大学 | Variable speed transmission device |
| CN109519513B (en) * | 2019-01-31 | 2020-07-28 | 北京圆海传智科技有限公司 | Engineering machine and hydraulic mechanical composite gearbox thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761658B1 (en) * | 2003-02-14 | 2004-07-13 | Deere & Company | Four mode hydro-mechanical transmission |
| JP2009008190A (en) * | 2007-06-28 | 2009-01-15 | Yanmar Co Ltd | Transmission including hydraulic-mechanical stepless speed changing device |
| CN103591247A (en) * | 2013-11-19 | 2014-02-19 | 北京理工大学 | Equal-proportion four-section-type hydraulic mechanical composite stepless transmission device |
| CN104088978A (en) * | 2014-06-23 | 2014-10-08 | 江苏大学 | Single-planet-row convergence hydraulic mechanical continuously variable transmission |
| CN205859092U (en) * | 2016-06-08 | 2017-01-04 | 南京农业大学 | Multisection type big-power tractor hydraulic mechanical stepless gearbox |
-
2017
- 2017-11-10 CN CN201711101166.2A patent/CN107654606B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761658B1 (en) * | 2003-02-14 | 2004-07-13 | Deere & Company | Four mode hydro-mechanical transmission |
| JP2009008190A (en) * | 2007-06-28 | 2009-01-15 | Yanmar Co Ltd | Transmission including hydraulic-mechanical stepless speed changing device |
| CN103591247A (en) * | 2013-11-19 | 2014-02-19 | 北京理工大学 | Equal-proportion four-section-type hydraulic mechanical composite stepless transmission device |
| CN104088978A (en) * | 2014-06-23 | 2014-10-08 | 江苏大学 | Single-planet-row convergence hydraulic mechanical continuously variable transmission |
| CN205859092U (en) * | 2016-06-08 | 2017-01-04 | 南京农业大学 | Multisection type big-power tractor hydraulic mechanical stepless gearbox |
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| CN107654606A (en) | 2018-02-02 |
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