CN103758976A - Power transmission system and grader - Google Patents
Power transmission system and grader Download PDFInfo
- Publication number
- CN103758976A CN103758976A CN201410008152.6A CN201410008152A CN103758976A CN 103758976 A CN103758976 A CN 103758976A CN 201410008152 A CN201410008152 A CN 201410008152A CN 103758976 A CN103758976 A CN 103758976A
- Authority
- CN
- China
- Prior art keywords
- speed reducer
- oil hydraulic
- transmission system
- power transmission
- hydraulic motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/80—Component parts
- E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
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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
- F16H2047/025—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the fluid gearing comprising a plurality of pumps or motors
Abstract
The invention discloses a power transmission system comprising a reduction box and at least two hydraulic motors. The reduction box comprises at least two input shafts, and an output shaft of each hydraulic motor is connected with each input shaft of the reduction box. The invention further provides a grader comprising the power transmission system. By selection of number of the working hydraulic motors and/or regulation of displacement of the hydraulic motors and/or hydraulic pumps, output speed of the transmission system is changed, and the power transmission system has the advantages of good speed regulation stability, enlargement of speed regulation range and the like.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of power transmission system and comprise the grader of this power transmission system.
Background technique
At present, existing grader walking power transmission system comprises three kinds of schemes: (1) prime mover, fluid torque converter, gearbox, transmission shaft, ransaxle, tandem-driving bogie, wheel, (2) prime mover, gearbox, transmission shaft, ransaxle, tandem-driving bogie, wheel, (3) as CN200420068592 patent discloses a kind of " land scraper running driving device ", this patent power transmission route is: prime mover-oil hydraulic pump-oil hydraulic motor-gearbox-ransaxle.
In above-mentioned three kinds of transmission systems, all used gearbox, due to change-speed gear box gearshift machinery, hydraulic pressure, control technique are required all higher, the easy scaling loss of clutch facing in gearbox.In addition, in gearbox gear-shift process, have certain power interruption.
Summary of the invention
In view of this, the present invention proposes a kind of power transmission system machine pacifically, when keeping compared with wide speed regulating range, solves the easy scaling loss of traditional gearbox wearing piece and gearshift procedure and exist the problem of power interruption.
On the one hand, the invention provides a kind of power transmission system, comprise speed reducer and at least two oil hydraulic motors, speed reducer comprises at least two input shafts, and the output shaft of each oil hydraulic motor is connected with each input shaft of speed reducer.
Further, speed reducer is provided with at least two reduction speed ratio.
Further, speed reducer comprises driven gear and at least two driving gears, and each driving gear is connected with each input shaft of speed reducer, and driven gear is connected with the output shaft of speed reducer, and driving gear engages with driven gear.
Further, speed reducer comprises driven gear and at least two driving gears and intermediate gear, and each driving gear is connected with each input shaft of speed reducer, and driven gear is connected with the output shaft of speed reducer, driving gear engages with intermediate gear, and intermediate gear engages with driven gear.
Further, also comprise power cut off, power cut off is arranged between driven gear and oil hydraulic motor.
Further, comprise prime mover and oil hydraulic pump and ransaxle, prime mover driven oil hydraulic pump, oil hydraulic pump is to oil hydraulic motor fuel feeding, and the output shaft of speed reducer is connected with ransaxle.
Further, oil hydraulic pump is volume adjustable hydraulic pump, and oil hydraulic motor is variable hydraulic motor.
In addition, a kind of grader, comprises above-mentioned power transmission system.
Further, comprise two tandem-driving bogies, two tandem-driving bogies are connected with ransaxle both sides respectively.
A kind of power transmission system provided by the invention machine pacifically, is connected with at least two input shafts of speed reducer by least two oil hydraulic motors, an oil hydraulic motor job, and other oil hydraulic motor is not worked; Or at least two oil hydraulic motor work, other oil hydraulic motor is not worked, and speed reducer can be exported different rotating speeds.By oil hydraulic motor work number, do not need trasmission shifting system just can realize speed governing, because there is no trasmission shifting system, make speed governing good stability, power failure-free.In addition, can also realize speed governing with selecting oil hydraulic motor working quantity by the discharge capacity of regulator solution pressure motor and/or hydraulic pressure pump delivery, speed adjustable range is increased, realize stepless change.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is power transmission system structure schematic diagram of the present invention.
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
As shown in Figure 1, the preferred a kind of power transmission system of the present invention, comprises prime mover 1, oil hydraulic pump 2, speed reducer 5, ransaxle 6, at least two oil hydraulic motors 3,4.Prime mover can be internal-combustion engine or motor etc., and speed reducer 5 comprises at least two input shafts, and prime mover 1 drives oil hydraulic pump 2, and oil hydraulic pump 2 is to oil hydraulic motor 3,4 fuel feeding.The output shaft of each oil hydraulic motor 3,4 is connected with each input shaft of speed reducer 5, and the output shaft of speed reducer 5 is connected with ransaxle 6.Oil hydraulic motor 3,4 is variable hydraulic motor, and oil hydraulic pump 2 is volume adjustable hydraulic pump.Oil hydraulic motor 3,4 can be also constant displacement hydraulic motor, and oil hydraulic pump 2 can be also quantitative hydraulic pump, and so-called constant displacement hydraulic motor refers to that the discharge capacity of oil hydraulic motor is non-adjustable, and so-called quantitative hydraulic pump refers to that hydraulic pressure pump delivery is non-adjustable.
Reduction speed ratio refers to the ratio of the output shaft rotating speed of speed reducer 5 and the input shaft rotating speed of speed reducer 5.Speed reducer 5 comprises at least two input shafts, that is to say that speed reducer 5 at least comprises two reduction speed ratio.Speed reducer 5 is different from gearbox, and speed reducer 5 does not have gearshift mechanism.Speed reducer 5 comprises driven gear 8 and at least two driving gears 7,9, each driving gear 7,9 is connected with each input shaft of speed reducer 5, driven gear 8 is connected with the output shaft of speed reducer 5, driving gear 7,9 often engages with driven gear 8, normal engagement refers to that speed reducer 5 is under any state, and two gears do not depart from.
In addition, speed reducer 5 adopts first scheme (not shown), speed reducer 5 comprises driven gear and at least two driving gears and intermediate gear, to increase reduction speed ratio, each driving gear is connected with each input shaft of speed reducer, driven gear is connected with the output shaft of speed reducer, and driving gear often engages with intermediate gear, and intermediate gear often engages with driven gear.
A kind of power transmission system of the present invention, is described as follows as an example of two oil hydraulic motors example:
If oil hydraulic motor 3 is worked, oil hydraulic motor 4 is not worked.Oil hydraulic motor 3 drives the input shaft rotation of speed reducer, on input shaft, driving gear 7 drives driven gear 8 to rotate, speed reducer 5 is exported a kind of rotating speed and moment of torsion, the all right discharge capacity of regulator solution pressure motor 3 and the discharge capacity of oil hydraulic pump 2 regulate the rotating speed of the input shaft of speed reducer 5 in addition, and output shaft rotating speed and the torque range of realizing speed reducer 5 regulate.
If oil hydraulic motor 4 is worked, oil hydraulic motor 3 is not worked.Oil hydraulic motor 4 drives the input shaft rotation of speed reducer 5, on input shaft, driving gear 9 drives driven gear 8 to rotate, speed reducer 5 is exported another kind of rotating speed and moment of torsion, the all right discharge capacity of regulator solution pressure motor 4 and the discharge capacity of oil hydraulic pump 2 regulate the rotating speed of the input shaft of speed reducer 5 in addition, and output shaft rotating speed and the torque range of realizing speed reducer 5 regulate.
If two oil hydraulic motors 3,4 are worked simultaneously, oil hydraulic motor 3 drives an input shaft rotation of speed reducer, oil hydraulic motor 4 drives another input shaft rotation of speed reducer, on an input shaft, driving gear 7 drives driven gear 8 to rotate, on another input shaft, driving gear 9 drives driven gear 8 to rotate, speed reducer 5 is exported another kind of rotating speed and moment of torsion, the all right discharge capacity of regulator solution pressure motor 3,4 and the discharge capacity of oil hydraulic pump 2 regulate the rotating speed of the input shaft of speed reducer 5 in addition, and output shaft rotating speed and the torque range of realizing speed reducer 5 regulate.
A kind of power transmission system of the present invention, in order to control oil hydraulic motor 3,4 work or not work, can be by the oil circuit break-make of control valve control oil hydraulic motor 3,4, or the discharge capacity of oil hydraulic motor 3,4 is adjusted to 0 discharge capacity realizes.For the rotating speed of the oil hydraulic motor 3,4 that prevents the work that do not participate in exceedes specified value, can disconnect this oil hydraulic motor 3,4 by power cut off (not shown) is connected with the input shaft of speed reducer 5, also can be disconnected between motor and driven gear and being engaged by power cut off, power cut off can be clutch or shift fork etc.Oil hydraulic motor 3 or 4 job, speed reducer 5 is exported a kind of rotating speed and moment of torsion, different oil hydraulic motor 3,4 work, speed reducer 5 is exported different rotating speeds and moment of torsion, and at least two oil hydraulic motor 3,4 combinations are worked simultaneously and are exported different rotating speed and moment of torsion.By controlling the discharge capacity of different oil hydraulic motor 3,4 work or oil hydraulic motor 3,4 work numbers and regulator solution pressure motor 3,4 and oil hydraulic pump 2, realize speed governing, increase speed adjustable range, guaranteed the stability of speed governing.
The present invention also provides a kind of grader, and grader comprises above-mentioned power transmission system, and two tandem-driving bogie (not shown)s are connected with ransaxle 6 both sides respectively.On each tandem-driving bogie, be connected with two wheel (not shown)s.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a power transmission system, it is characterized in that, comprise speed reducer (5) and at least two oil hydraulic motors (3,4), speed reducer (5) comprises at least two input shafts, and the output shaft of each oil hydraulic motor (3,4) is connected with each input shaft of speed reducer (5).
2. power transmission system according to claim 1, is characterized in that, speed reducer (5) is provided with at least two reduction speed ratio.
3. power transmission system according to claim 2, it is characterized in that, speed reducer (5) comprises driven gear (8) and at least two driving gears (7,9), each driving gear (7,9) is connected with each input shaft of speed reducer (5), driven gear (8) is connected with the output shaft of speed reducer (5), and driving gear (7,9) engages with driven gear (8).
4. power transmission system according to claim 2, it is characterized in that, speed reducer (5) comprises driven gear and at least two driving gears and intermediate gear, each driving gear is connected with each input shaft of speed reducer, driven gear is connected with the output shaft of speed reducer, driving gear engages with intermediate gear, and intermediate gear engages with driven gear.
5. according to the power transmission system described in claim 3 or 4 any one, it is characterized in that, also comprise power cut off, power cut off is arranged between driven gear (8) and oil hydraulic motor (3,4).
6. according to the power transmission system described in claim 1 to 4 any one, it is characterized in that, comprise prime mover (1) and oil hydraulic pump (2) and ransaxle (6), prime mover (1) drives oil hydraulic pump (2), oil hydraulic pump (2) is to oil hydraulic motor (3,4) fuel feeding, and the output shaft of speed reducer (5) is connected with ransaxle (6).
7. power transmission system according to claim 6, is characterized in that, oil hydraulic pump (2) is volume adjustable hydraulic pump, and oil hydraulic motor (3,4) is variable hydraulic motor.
8. a grader, is characterized in that, comprises the power transmission system as described in claim 1 to 7 any one.
9. grader according to claim 8, is characterized in that, comprises two tandem-driving bogies, and two tandem-driving bogies are connected with ransaxle (6) both sides respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008152.6A CN103758976A (en) | 2014-01-08 | 2014-01-08 | Power transmission system and grader |
| PCT/CN2014/084726 WO2015103881A1 (en) | 2014-01-08 | 2014-08-19 | Speed regulation apparatus, power transmission system, and engineering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410008152.6A CN103758976A (en) | 2014-01-08 | 2014-01-08 | Power transmission system and grader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103758976A true CN103758976A (en) | 2014-04-30 |
Family
ID=50526265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410008152.6A Pending CN103758976A (en) | 2014-01-08 | 2014-01-08 | Power transmission system and grader |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103758976A (en) |
| WO (1) | WO2015103881A1 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153410A (en) * | 2014-08-08 | 2014-11-19 | 湖南三一路面机械有限公司 | Land leveler driving system and land leveler |
| CN104499521A (en) * | 2014-12-15 | 2015-04-08 | 湖南三一路面机械有限公司 | Land leveler and power transmission system thereof |
| WO2015103881A1 (en) * | 2014-01-08 | 2015-07-16 | 湖南三一路面机械有限公司 | Speed regulation apparatus, power transmission system, and engineering machine |
| CN107428241A (en) * | 2015-01-19 | 2017-12-01 | 马瑟斯液压技术有限公司 | Hydrostatic-mechanical Transmission with multiple modes of operation |
| CN109372981A (en) * | 2018-12-17 | 2019-02-22 | 潍柴动力股份有限公司 | A kind of vehicle shift control system, driving shift control method and loading machine |
| CN110239341A (en) * | 2019-06-27 | 2019-09-17 | 山推工程机械股份有限公司 | A kind of transmission system and engineering truck |
| CN110375053A (en) * | 2019-08-19 | 2019-10-25 | 三一汽车制造有限公司 | Land leveller |
| US10487657B2 (en) | 2015-03-26 | 2019-11-26 | Mathers Hydraulics Technologies Pty Ltd | Hydraulic machine |
| US11085299B2 (en) | 2015-12-21 | 2021-08-10 | Mathers Hydraulics Technologies Pty Ltd | Hydraulic machine with chamfered ring |
| US11168772B2 (en) | 2009-11-20 | 2021-11-09 | Mathers Hydraulics Technologies Pty Ltd | Hydrostatic torque converter and torque amplifier |
| US11255193B2 (en) | 2017-03-06 | 2022-02-22 | Mathers Hydraulics Technologies Pty Ltd | Hydraulic machine with stepped roller vane and fluid power system including hydraulic machine with starter motor capability |
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| CN201116079Y (en) * | 2007-11-22 | 2008-09-17 | 鼎盛天工工程机械股份有限公司 | Land scraper walking hydraulic driving device |
| CN101934727A (en) * | 2010-09-07 | 2011-01-05 | 三一重工股份有限公司 | Running drive device and road grader |
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| US7588509B1 (en) * | 2006-03-14 | 2009-09-15 | John David Marsha | Infinitely variable gear transmission with parallel hydraulic ratio control |
| JP5171053B2 (en) * | 2007-02-09 | 2013-03-27 | 日立建機株式会社 | Clutch control device for hydraulic drive vehicle |
| CN101761634A (en) * | 2010-02-28 | 2010-06-30 | 赵国贵 | Drive device |
| CN103758976A (en) * | 2014-01-08 | 2014-04-30 | 湖南三一路面机械有限公司 | Power transmission system and grader |
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- 2014-01-08 CN CN201410008152.6A patent/CN103758976A/en active Pending
- 2014-08-19 WO PCT/CN2014/084726 patent/WO2015103881A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2183348Y (en) * | 1993-12-24 | 1994-11-23 | 马惠媛 | Speed-adjustable driving device for belt type carrying machine |
| CN2186329Y (en) * | 1994-03-29 | 1994-12-28 | 洛阳矿山机械工程设计研究院 | Mechanical-hydraulic mixed speed regulating device |
| CN1514148A (en) * | 2002-12-23 | 2004-07-21 | 卢克摩擦片和离合器两合公司 | Speed change device capable of infinitely regulating speed change ratio, with or without power branch and motor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11168772B2 (en) | 2009-11-20 | 2021-11-09 | Mathers Hydraulics Technologies Pty Ltd | Hydrostatic torque converter and torque amplifier |
| WO2015103881A1 (en) * | 2014-01-08 | 2015-07-16 | 湖南三一路面机械有限公司 | Speed regulation apparatus, power transmission system, and engineering machine |
| CN104153410A (en) * | 2014-08-08 | 2014-11-19 | 湖南三一路面机械有限公司 | Land leveler driving system and land leveler |
| CN104499521A (en) * | 2014-12-15 | 2015-04-08 | 湖南三一路面机械有限公司 | Land leveler and power transmission system thereof |
| US10788112B2 (en) | 2015-01-19 | 2020-09-29 | Mathers Hydraulics Technologies Pty Ltd | Hydro-mechanical transmission with multiple modes of operation |
| CN107428241B (en) * | 2015-01-19 | 2020-09-11 | 马瑟斯液压技术有限公司 | Hydro-mechanical transmission with multiple operating modes |
| CN107428241A (en) * | 2015-01-19 | 2017-12-01 | 马瑟斯液压技术有限公司 | Hydrostatic-mechanical Transmission with multiple modes of operation |
| US10487657B2 (en) | 2015-03-26 | 2019-11-26 | Mathers Hydraulics Technologies Pty Ltd | Hydraulic machine |
| US11085299B2 (en) | 2015-12-21 | 2021-08-10 | Mathers Hydraulics Technologies Pty Ltd | Hydraulic machine with chamfered ring |
| US11255193B2 (en) | 2017-03-06 | 2022-02-22 | Mathers Hydraulics Technologies Pty Ltd | Hydraulic machine with stepped roller vane and fluid power system including hydraulic machine with starter motor capability |
| CN109372981A (en) * | 2018-12-17 | 2019-02-22 | 潍柴动力股份有限公司 | A kind of vehicle shift control system, driving shift control method and loading machine |
| CN110239341A (en) * | 2019-06-27 | 2019-09-17 | 山推工程机械股份有限公司 | A kind of transmission system and engineering truck |
| CN110375053A (en) * | 2019-08-19 | 2019-10-25 | 三一汽车制造有限公司 | Land leveller |
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| Publication number | Publication date |
|---|---|
| WO2015103881A1 (en) | 2015-07-16 |
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Application publication date: 20140430 |
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