CN109578544A - A kind of single planetary row multi-mode hydraulic mechanical stepless gearbox - Google Patents
A kind of single planetary row multi-mode hydraulic mechanical stepless gearbox Download PDFInfo
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- CN109578544A CN109578544A CN201811549538.2A CN201811549538A CN109578544A CN 109578544 A CN109578544 A CN 109578544A CN 201811549538 A CN201811549538 A CN 201811549538A CN 109578544 A CN109578544 A CN 109578544A
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- gear
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- clutch
- shaft
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The present invention relates to Vehicle Engineering gear apparatus field, specifically a kind of single planetary row multi-mode hydraulic mechanical stepless gearbox.Including casing and the mechanical variable speed system and hydraulic gear shifting system that are arranged in parallel in casing, the mode switching system for controlling the independent speed change output of mechanical variable speed system, the independent speed change output of control hydraulic system or control mechanical variable speed system and hydraulic gear shifting system mixing output is additionally provided in casing；The present invention can control by the state of clutch, brake in mode switching system and switch purely mechanic mode, pure hydraulic mode and hydraulic machinery mixed mode, improve slewing range, meet the several work demand of large-scale engineering machinery.
Description
Technical field
The present invention relates to Vehicle Engineering gear apparatus field, specifically a kind of single planetary row multi-mode hydraulic press
Tool stepless transmission.
Background technique
Hydraulic drive, which has, arranges that convenient, power density is big, output torque and revolving speed are not influenced by input speed, are easy
The advantages that realizing stepless speed regulation and automatically controlling, but exist simultaneously the shortcomings such as transmission efficiency is low.Especially in high speed and low speed
Transmission condition, this low deficiency of transmission efficiency are more prominent.Gear mechanism transmission accurate and reliable, instantaneous transmission with passing movement
Than it is constant, compact-sized, can be achieved compared with large transmission ratio, transmitting power is big, transmission efficiency is high the advantages that, but be not easy to realize automatic change
Speed, it more difficult to Yu Shixian variable speed.For medium-and-large-sized engineering machinery in operation, transmission system generally requires transmitting relatively high power, and
It is required that efficient speed and torque conversion, single use machine can be carried out to power source according to working condition and payload size variation
Tool transmission or hydraulic drive are all difficult to perfection and meet requirement of the medium-and-large-sized engineering machinery to transmission system.Multi-mode hydraulic press at present
Tool stepless transmission needs two and more than two planet rows, and structure is complex, higher cost.
Summary of the invention
The present invention is intended to provide a kind of single planetary row multi-mode hydraulic mechanical stepless gearbox, by mode switching system
Clutch, brake state control and switch purely mechanic mode, pure hydraulic mode and hydraulic machinery mixed mode, mention
High slewing range meets the several work demand of large-scale engineering machinery.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows: a kind of single planetary row multi-mode hydraulic press
Tool stepless transmission, including casing and the mechanical variable speed system and hydraulic gear shifting system that are arranged in parallel in casing, in casing
It is inside additionally provided with and becomes for controlling the independent speed change output of mechanical variable speed system, the independent speed change output of control hydraulic system or control machinery
The mode switching system of speed system and hydraulic gear shifting system mixing output；
Mechanical variable speed system includes sun wheel shaft, sun gear, planetary gear, planet carrier and gear ring, and sun wheel shaft can clutch connection
There is input shaft, input shaft is rotatably arranged on casing, and input gear is also fixedly connected on input shaft, and planet carrier is set with rotation
The output shaft set on casing is fixedly connected, and first gear and second gear have been fixedly and coaxially connected on gear ring, in output shaft
On be fixedly connected with third gear；
Hydraulic gear shifting system includes the volume adjustable hydraulic pump and variable hydraulic motor being connected by fluid pressure line, in variable delivery hydraulic pump shaft
On can clutch be equipped with engage with first gear connection the 6th gear and engaged with input gear connect the 7th gear, becoming
Amount hydraulic motor axis on can clutch be equipped with engage with second gear connection the 5th gear and engaged with third gear connect
4th gear；
Mode switching system includes for controlling the first clutch of input shaft and sun wheel shaft clutch connection, the 4th gear of control
With the of the second clutch of variable hydraulic motor axis clutch connection, the 5th gear of control and the clutch connection of variable hydraulic motor axis
Three clutches, the 4th clutch of the 6th gear of control and the clutch connection of variable delivery hydraulic pump shaft, the 7th gear of control and variable liquid
5th clutch of press pump axis clutch connection and the brake for controlling ring gear against rotation.
Preferably, the side of gear ring is coaxially fixed with the first hollow shaft passed through for sun wheel shaft, and the other side is coaxially solid
Fixed to be equipped with the second hollow shaft passed through for output shaft, first gear is fixed in the first hollow shaft, and second gear is fixed on second
In hollow shaft.
Preferably, brake is fitted to the position of corresponding first hollow shaft on casing.
Beneficial effect
The difference of the present invention and prior art maximum is, relative to using more multisection type hydraulic machinery variable speed at present
Device, the present invention use bivariate pump-motor system, and the gear ring in planet row can not only do the power input of pump-motor system, but also
The power output of pump-motor system can be done.Therefore, the fast hydraulic machinery mixing output of point square remittance had not only may be implemented in the present invention, but also
A point speed remittance square hydraulic machinery mixing output may be implemented.Relative to the hydraulic mechanical stepless gearbox of current multi-mode, such as patent
Number be CN201711163954.4 patent of invention: a kind of multi-mode hydraulic machinery stepless speed change device, the present invention only need to use
One planet tooth row, structure is simple and function is more perfect.
A kind of single planetary row multi-mode hydraulic mechanical stepless gearbox of the present invention, passes through pattern switching at work
The state of clutch, brake in system mixes to control and switch purely mechanic mode, pure hydraulic mode and hydraulic machinery
Mode, improves slewing range, largely meets the several work demand of large-scale engineering machinery.
Purely mechanic mode efficiencies are high, can be used for the transition traveling of long-distance high speed；Hydraulic machinery mixed mode can be in machinery
Stepless speed regulation is realized on the basis of transmission, it is adaptable, it is suitble to most of duty requirements；Although pure hydraulic mode transmission efficiency compared with
It is low, but engine can be made to always work in high efficient district, and output torque and revolving speed be not by the shadow of input torque and revolving speed
It rings, can satisfy the duty requirements of the big load low speed of engineering machinery.
A kind of single planetary row multi-mode hydraulic mechanical stepless gearbox of the present invention is relative at present using more
Hydraulic mechanical stepless gearbox, under the premise of meeting multi-mode, it is only necessary to a planet row, structure is more simple and compact, and
When switch mode it is more flexible with it is steady, reduce impact, improve the dynamic property of vehicle.No setting is required reverses gear by the present invention,
Under pure hydraulic mode, Hydraulic Elements can meet the four-quadrant operation demand of rotational speed and torque coordinate plane, advance and retreat performance
Almost symmetry, and simple hydraulic machinery hybrid transmission is often required to be arranged in postposition gearbox to reverse gear, and is used with evading
The area's locking phenomenon that reverses gear being likely to occur in the process.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the transmission principle figure of the purely mechanic output of the present invention；
Fig. 3 is the transmission principle figure of the pure hydraulic output of the present invention；
Fig. 4 is the first transmission principle figure of hydraulic machinery of the present invention mixing output；
Fig. 5 is second of transmission principle figure of hydraulic machinery of the present invention mixing output；
Marked in the figure: 1, input shaft, 2, input gear, 3, first clutch, 4, sun wheel shaft, 5, brake, 6, gear ring, 7, row
Star-wheel, 8, planet carrier, 9, second gear, 10, third gear, 11, output shaft, the 12, the 4th gear, 13, second clutch, 14,
Variable hydraulic motor axis, 15, third clutch, 16, casing, the 17, the 5th gear, 18, variable hydraulic motor, 19, variable delivery hydraulic
Pump, the 20, the 4th clutch, the 21, the 6th gear, 22, first gear, 23, variable delivery hydraulic pump shaft, the 24, the 7th gear, the 25, the 5th
Clutch.
Specific embodiment
As shown in Figure 1, a kind of single planetary row multi-mode hydraulic mechanical stepless gearbox of the invention, including casing 16 and
It is arranged in parallel mechanical variable speed system and hydraulic gear shifting system in casing 16.Control mechanical speed change system is additionally provided in casing 16
The mode switching system of system and hydraulic gear shifting system switching, and mechanical variable speed system can be controlled by mode switching system and individually become
Speed output, or the independent speed change output of control hydraulic system, or control mechanical variable speed system and hydraulic gear shifting system mixing output, with
Meet the several work demand of large-scale engineering machinery.
Mechanical variable speed system includes sun wheel shaft 4, sun gear, planetary gear 7, planet carrier 8 and gear ring 6.Sun wheel shaft 4
Left end is coaxially connected by first clutch 3 and the right end of input shaft 1, and input shaft 1 is rotatably arranged on 16 wall of casing, left end
It stretches out 16 outside of casing and is connect with driving engine.Input gear 2 is also coaxially fixed on input shaft 1.Sun wheel shaft 4
Right end be fixedly and coaxially connected with sun gear, gear ring 6 is arranged concentrically on the periphery of sun gear, and multiple 7 uniform intervals of planetary gear are nibbled
Conjunction is connected between sun gear and gear ring 6, and planet carrier 8 is connected with multiple planetary gears 7.The left end of planet carrier 8 and output shaft 11 is solid
Fixed connection.Output shaft 11 is rotatably arranged on casing 16, and right end stretches out 16 outside of casing and for the traveling with engineering machinery
Wheel connection.Third gear 10 is also fixedly connected on output shaft 11.The left side of gear ring 6 is coaxially fixed with for sun wheel shaft 4
The first hollow shaft passed through, right side are coaxially fixed with the second hollow shaft passed through for output shaft 11, same in the first hollow shaft
Axis is fixed with first gear 22, is coaxially fixed with second gear 9 in the second hollow shaft.
Hydraulic gear shifting system includes the volume adjustable hydraulic pump 19 and variable hydraulic motor 18 being connected by fluid pressure line.Variable liquid
The working shaft of press pump 19 is variable delivery hydraulic pump shaft 23, and the working shaft of variable hydraulic motor 18 is in variable hydraulic motor axis 14.?
On variable delivery hydraulic pump shaft 23 can clutch be equipped with engage with first gear 22 connect the 6th gear 21 and engaged with input gear 2
7th gear 24 of connection.On variable hydraulic motor axis 14 can clutch be equipped with engage with second gear 9 connect the 5th gear
17 and engaged with third gear 10 connection the 4th gear 12.
Mode switching system includes for controlling the first clutch 3 of input shaft 1 and 4 clutch connection of sun wheel shaft, control
The second clutch 13, the 5th gear 17 of control and variable delivery hydraulic horse of 4th gear 12 and 14 clutch connection of variable hydraulic motor axis
Up to the 4th clutch of the third clutch 15, control the 6th gear 21 and 23 clutch connection of variable delivery hydraulic pump shaft of 14 clutch connection of axis
What the 5th clutch 25 and control gear ring 6 of device 20, the 7th gear 24 of control and 23 clutch connection of variable delivery hydraulic pump shaft rotated
Brake 5.Brake 5 therein is fitted to the position of corresponding first hollow shaft on casing 16, hollow by locked first
Axis brakes gear ring 6.
Mechanical variable speed system of the invention is individually exported below by 4 specific examples, hydraulic gear shifting system it is individually defeated
Out and mechanical variable speed system and hydraulic gear shifting system mixing output mode gear switch further illustrate.
Embodiment one, as shown in Fig. 2, coming in the independent output mode of mechanical variable speed system of the invention from engine transmitting
Power successively pass through the sun gear that input gear 2, first clutch 3, sun wheel shaft 4 are transferred to planet tooth row.At this point, braking
Device 5 brakes gear ring 6, and power is exported by planet carrier 8 to output shaft 11.Under purely mechanic mode, hydraulic pressure road does not transmit power, at this time
Transmission efficiency it is relatively high, the traveling demand being chiefly used under vehicle underload.
The working condition of mode switching system is as follows:
(note: "+" indicates that clutch engagement or brake 5 are braked, and "-" indicates that clutch separation or brake 5 are not braking)
Embodiment two, as shown in figure 3, hydraulic gear shifting system of the invention individually enters in mode, that comes from engine transmitting is dynamic
Power is successively passed through input gear 2, the 7th gear 24, variable delivery hydraulic pump shaft 23, volume adjustable hydraulic pump 19, variable hydraulic motor 18, is become
Amount hydraulic motor axis 14, the 4th gear 12, third gear 10 are transferred to output shaft 11.Under pure hydraulic mode, hydraulic pressure road transmitting
Whole power, transmission efficiency at this time is relatively low, but pure hydraulic drive can make engine always work in high efficient district, real
Existing vehicle external condition and the best match with engine power, make vehicle obtain optimal driving performance.This mode is chiefly used in
The starting acceleration of vehicle is moved backward, the driving requirements under the big torque operating condition of high load capacity power.
The working condition of mode switching system is as follows:
(note: "+" indicates that clutch engagement or brake 5 are braked, and "-" indicates that clutch separation or brake 5 are not braking)
Embodiment three, as shown in figure 4, engine transmitting comes dynamic in the first hydraulic machinery mixing output mode of the invention
Power realizes split torque flow at input gear 2, is transferred to the sun of planet tooth row by first clutch 3, sun wheel shaft 4 all the way
Wheel, the 7th gear 24 of another way, variable delivery hydraulic pump shaft 23, volume adjustable hydraulic pump 19, variable hydraulic motor 18, variable hydraulic motor axis
14, the 5th gear 17, second gear 9 are transferred to planet row gear ring 6.Two-way power is after planet row realizes revolving speed confluence by planet
Frame 8 is transferred to output shaft 11.
The working condition of mode switching system is as follows:
(note: "+" indicates that clutch engagement or brake 5 are braked, and "-" indicates that clutch separation or brake 5 are not braking)
Example IV, second of hydraulic machinery mixing output mode of the invention.As shown in figure 5, the power that engine transmitting comes
It successively is transferred to planet row by input gear 2, first clutch 3, sun wheel shaft 4, after realizing that revolving speed shunts at planet row
It is transferred to third gear 10 through planet carrier 8 all the way, another way is through gear ring 6, first gear 22, the 6th gear 21, volume adjustable hydraulic pump
Axis 23, volume adjustable hydraulic pump 19, variable hydraulic motor 18, variable hydraulic motor axis 14, the 4th gear 12, third gear 10.Two-way
Power is exported after realizing torque confluence at third gear 10 by output shaft 11.
The working condition of mode switching system is as follows:
(note: "+" indicates that clutch engagement or brake 5 are braked, and "-" indicates that clutch separation or brake 5 are not braking).
Claims (3)
1. a kind of single planetary row multi-mode hydraulic mechanical stepless gearbox, it is characterised in that: set including casing (16) and parallel connection
The mechanical variable speed system and hydraulic gear shifting system in casing (16) are set, is additionally provided in casing (16) for controlling mechanical speed change
The independent speed change output of system, the independent speed change output of control hydraulic system or control mechanical variable speed system and hydraulic gear shifting system mixing
The mode switching system of output；
Mechanical variable speed system includes sun wheel shaft (4), sun gear, planetary gear (7), planet carrier (8) and gear ring (6), sun gear
Axis (4) can clutch connection have input shaft (1), input shaft (1) is rotatably arranged on casing (16), also fixed on input shaft (1)
It is connected with input gear (2), planet carrier (8) is fixedly connected with the output shaft (11) being rotatably arranged on casing (16), in gear ring
(6) it has been fixedly and coaxially connected first gear (22) and second gear (9) on, has been fixedly connected with third gear on output shaft (11)
(10)；
Hydraulic gear shifting system includes the volume adjustable hydraulic pump (19) and variable hydraulic motor (18) being connected by fluid pressure line, in variable
On hydraulic pump shaft (23) can clutch be equipped with engage with first gear (22) connect the 6th gear (21) and with input gear (2)
The 7th gear (24) for engaging connection, on variable hydraulic motor axis (14) can clutch be equipped with and with second gear (9) engage connection
The 5th gear (17) and engaged with third gear (10) connection the 4th gear (12)；
Mode switching system includes for controlling the first clutch (3) of input shaft (1) and sun wheel shaft (4) clutch connection, control
Make the 4th gear (12) and variable hydraulic motor axis (14) clutch connection second clutch (13), control the 5th gear (17) with
The third clutch (15) of variable hydraulic motor axis (14) clutch connection controls the 6th gear (21) and variable delivery hydraulic pump shaft (23)
4th clutch (20) of clutch connection, the 5th clutch for controlling the 7th gear (24) and variable delivery hydraulic pump shaft (23) clutch connection
Device (25) and the brake (5) of control gear ring (6) rotation.
2. a kind of single planetary row multi-mode hydraulic mechanical stepless gearbox according to claim 1, it is characterised in that: gear ring
(6) side is coaxially fixed with the first hollow shaft passed through for sun wheel shaft (4), and the other side is coaxially fixed with for output shaft
(11) the second hollow shaft passed through, first gear (22) are fixed in the first hollow shaft, and it is hollow that second gear (9) is fixed on second
On axis.
3. a kind of single planetary row multi-mode hydraulic mechanical stepless gearbox according to claim 2, it is characterised in that: braking
Device (5) is fitted to the position of corresponding first hollow shaft on casing (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549538.2A CN109578544B (en) | 2018-12-18 | 2018-12-18 | Single-planet-row multi-mode hydraulic mechanical stepless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811549538.2A CN109578544B (en) | 2018-12-18 | 2018-12-18 | Single-planet-row multi-mode hydraulic mechanical stepless speed changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578544A true CN109578544A (en) | 2019-04-05 |
| CN109578544B CN109578544B (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811549538.2A Active CN109578544B (en) | 2018-12-18 | 2018-12-18 | Single-planet-row multi-mode hydraulic mechanical stepless speed changer |
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| Country | Link |
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| CN (1) | CN109578544B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021164044A1 (en) * | 2020-02-19 | 2021-08-26 | 江苏大学 | Dual-clutch variable-speed hydraulic mechanical transmission device, and control method therefor |
| WO2023155216A1 (en) * | 2022-02-17 | 2023-08-24 | 江苏大学 | Hydro-mechanical series-parallel all-in-one transmission apparatus, and control method therefor |
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2018
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| DE2541975A1 (en) * | 1971-08-17 | 1977-03-24 | Jarchow Friedrich | Combined hydrostatic and mechanism for vehicle change speed gearing - has friction clutches for speed change through epicyclic gearing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021164044A1 (en) * | 2020-02-19 | 2021-08-26 | 江苏大学 | Dual-clutch variable-speed hydraulic mechanical transmission device, and control method therefor |
| US11359707B2 (en) | 2020-02-19 | 2022-06-14 | Jiangsu University | Hydro-mechanical transmission device with dual-clutch transmission and control method thereof |
| WO2023155216A1 (en) * | 2022-02-17 | 2023-08-24 | 江苏大学 | Hydro-mechanical series-parallel all-in-one transmission apparatus, and control method therefor |
| GB2619182A (en) * | 2022-02-17 | 2023-11-29 | Univ Jiangsu | Hydro-mechanical series and parallel transmission device and control method thereof |
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| Publication number | Publication date |
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| CN109578544B (en) | 2021-04-27 |
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