CN111140634A - Walking gearbox of wheel type excavator and working method of walking gearbox - Google Patents
Walking gearbox of wheel type excavator and working method of walking gearbox Download PDFInfo
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- CN111140634A CN111140634A CN202010042612.2A CN202010042612A CN111140634A CN 111140634 A CN111140634 A CN 111140634A CN 202010042612 A CN202010042612 A CN 202010042612A CN 111140634 A CN111140634 A CN 111140634A
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- gear
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- input shaft
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000009194 climbing Effects 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Classifications
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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
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
- F16H47/08—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the type with members having orbital motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a traveling gearbox of a wheeled excavator and a working method thereof, and relates to the technical field of excavators. A first-gear sun gear of the first-gear planetary gear transmission is connected with the input shaft, a first-gear planet carrier is connected with the output gear pair, and a first-gear ring is connected with the box body through a first-gear clutch. The reverse gear sun gear of the reverse gear planetary gear transmission is connected to the input shaft, the reverse gear planet carrier is connected to the box body through the reverse gear clutch, and the reverse gear ring gear is connected to the output gear pair. The invention adopts a hydraulic driving mode, controls gears by different clutches, is convenient to shift gears without stopping and engaging gears, and has the advantages of good climbing performance, high power transmission efficiency and the like.
Description
Technical Field
The invention relates to the technical field of excavators, in particular to a walking gearbox of a wheel type excavator and a working method thereof.
Background
Wheel excavator is divided into two at domestic walking mode, one, come the transmission moment of torsion and switch different number ratio and change walking speed and moment of torsion with mechanical gear shifting gearbox, this kind is though efficient to step on frequently that the separation and reunion shifts gear operation is tired when removing, the engine is easy to put out fire when climbing and bulldozing the operation, two, drive high low-speed mechanical gear box with hydraulic motor, the defect of this kind of existence is, hydraulic motor is inefficient, including gearbox efficiency and transaxle efficiency, the total efficiency is less than 75%, and high low-speed gear box also is mechanical gear shifting, even can put into gear to park. Therefore, a novel walking gearbox with high transmission effect and convenient operation is urgently needed to be developed for the wheel type excavator.
Disclosure of Invention
The invention provides a walking gearbox of a wheel excavator and a working method thereof, and aims to solve the problems in the prior art.
The technical scheme adopted by the invention is as follows:
a walking gearbox of a wheel excavator comprises a box body, wherein an input shaft, an output gear pair, a first-gear planetary gear transmission, a first-gear clutch and a second-gear clutch are arranged in the box body; the first-gear sun gear of the first-gear planetary gear transmission is fixedly connected to the input shaft, the first-gear planet carrier is fixedly connected to the output gear pair, and the first-gear ring is connected to the box body through the first-gear clutch.
Further, still including reverse gear planetary gear derailleur and reverse gear clutch, above-mentioned reverse gear planetary gear derailleur's reverse gear sun gear fixed connection is in the input shaft, and the planet carrier that reverses gear is connected in the box through reverse gear clutch, and reverse gear ring gear fixed connection is in output gear pair.
Further, the reverse clutch, the first gear clutch and the second gear clutch are all hydraulic friction clutches.
Further, the reverse gear ring gear, the first gear planet carrier, the second gear clutch housing of the second gear clutch and the output gear pair are fixedly connected in sequence.
And the hydraulic pump and the variable gear pump are connected with a pump impeller of the hydraulic torque converter, and a turbine of the hydraulic torque converter is fixedly connected with the input shaft.
The working method of the walking gearbox of the wheel type excavator comprises the following steps:
a pump impeller of the hydraulic torque converter is connected to an engine, and an output gear pair is connected to a front axle and a rear axle of the lower frame.
When only the second clutch is in the engaging state, the input shaft is fixedly connected with the second clutch shell, so that the output gear pair fixedly connected with the second clutch shell rotates along with the input shaft at the same speed.
When only the first-gear clutch is in an engaged state, the first-gear ring and the box body are fixedly connected together and cannot rotate, the input shaft drives the first-gear sun wheel, and the first-gear sun wheel drives the first-gear planet wheel; because the first gear ring does not rotate, the rotation of the first gear planet wheel drives the first gear planet carrier to rotate; because the first-gear planet carrier, the second-gear clutch shell and the output gear pair are fixedly connected together, the first-gear planet carrier drives the output gear pair.
When only the reverse gear clutch is in an engaged state, the reverse gear planet carrier and the box body are fixedly connected together and cannot rotate, the input shaft drives the reverse gear sun gear, and the reverse gear sun gear drives the reverse gear planet gear; because the reverse gear planet carrier does not rotate, the rotation of the reverse gear planet wheel drives the reverse gear ring; because the reverse gear ring, the first gear planet carrier, the second gear clutch shell and the output gear pair are fixedly connected together, the reverse gear ring drives the output gear pair.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
the invention adopts a hydraulic driving mode and controls gears by different clutches, so that the gear shifting is easy and quick without stopping and engaging gears. Because of the torque increasing function of the torque converter, the actual variable ratio can reach more than 9, so the traction force is large, and the climbing performance of the whole vehicle is good.
In addition, because the hydraulic torque converter adopts a free guide wheel structure, the guide wheel can rotate freely in a single direction and lock in the opposite direction, when the torque ratio is less than 1, the guide wheel rotates in the opposite direction and the pump wheel rotates in the same direction, so that the efficiency of the hydraulic torque converter is obviously improved, and when the whole vehicle moves at high speed, the efficiency can reach more than 90%.
Drawings
Fig. 1 is a schematic structural diagram of a walking gearbox in the invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below in order to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details.
Referring to fig. 1, a traveling transmission of a wheel excavator includes a case 1, and a torque converter 2, an input shaft 3, an output gear pair 9, a reverse planetary gear transmission 6, a reverse clutch 4, a first-gear planetary gear transmission 7, a first-gear clutch 5, and a second-gear clutch 8 are installed in the case 1. The input shaft 3 and the output gear pair 9 are rotatably mounted in the case 1, and the right end of the input shaft 3 is separably connected to the output gear pair 9 through the two-gear clutch 8. More specifically, the second clutch 8 is a hydraulic friction clutch, and the output gear set 9 is fixedly connected to a second clutch housing 81 of the second clutch 8. In particular, the output gear set 9 is a helical bevel gear.
Referring to fig. 1, the torque converter 2 mainly includes a pump impeller 21, a stator 22, and a turbine runner 23. The impeller 21 is connected to a flywheel (not shown) of the engine via a coupling (not shown). The guide wheel 22 is provided on the casing 1 so as to be freely rotatable in one direction through a one-way bearing, and the guide wheel 22 is allowed to rotate in the same direction as the pump wheel 21 and locked in the opposite direction. The turbine 23 is fixedly connected to the left end of the input shaft 3. The hydraulic pump system further comprises a driving gear 11, a driven gear 12, a variable-speed gear pump 100 and a hydraulic pump 200, wherein the pump wheel 21 and the driving gear 11 are locked with each other, the driving gear 11 and the driven gear 12 are meshed with each other, and the variable-speed gear pump 100 and the hydraulic pump 200 are locked with each other and the driven gear 12, so that the variable-speed gear pump 100 and the hydraulic pump 200 are connected to the hydraulic torque converter 2.
Referring to fig. 1, the first-speed planetary gear transmission 7 mainly includes a first-speed sun gear 71, a first-speed carrier 72, a first-speed planetary gear 73, and a first-speed ring gear 74. The first-gear sun gear 71 is fixedly connected to the input shaft 3 through a spline in a sleeving manner, the first-gear planet carrier 72 is fixedly connected to the output gear pair 9, and the first-gear ring gear 74 is detachably connected to the case 1 through the first-gear clutch 5. Specifically, the first-gear carrier 72 is fixedly connected to the second-gear clutch housing 81 of the second-gear clutch 8. The first gear clutch 5 is a hydraulic friction clutch.
Referring to fig. 1, the reverse planetary transmission 6 basically includes a reverse sun gear 61, a reverse planet gear 62, a reverse planet carrier 63 and a reverse ring gear 64. The reverse sun gear 61 is fixedly connected to the input shaft 3 through a spline in a sleeved manner, the reverse planet carrier 63 is detachably connected to the case 1 through the reverse clutch 4, and the reverse gear ring gear 64 is fixedly connected to the output gear pair. Specifically, the reverse ring gear 64 is fixedly connected to the first gear carrier 72. The reverse clutch 4 is a hydraulic friction clutch.
Referring to fig. 1, the working method of the present invention:
the pump impeller 21 of the torque converter 2 is connected to a flywheel of the engine through a coupling, and the output gear pair 9 is connected to front and rear axles of the under frame through a transmission shaft or the like.
When only the second gear piston rod 82 of the second gear clutch 8 has pressure (i.e. the second gear clutch 8 is in a connected state), the static friction plate and the dynamic friction plate of the second gear clutch 8 are tightly pressed together under the pushing of the piston rod 82, and the input shaft 3 and the second gear clutch housing 81 are fixedly connected together, so that the output gear pair 9 fixedly connected to the second gear clutch housing 81 rotates at the same speed with the input shaft 3.
When only the first gear piston rod of the first gear clutch 5 has pressure (i.e. the first gear clutch 5 is in the engaged state), the static friction plate and the dynamic friction plate of the first gear clutch 5 are pushed by the piston rod to be tightly pressed together, so that the first gear ring gear 74 and the box body 1 are fixedly connected together and cannot rotate, the input shaft 3 drives the first gear sun gear 71, and the first gear sun gear 71 drives the first gear planet gear 73. Since the first-gear ring gear 74 does not rotate, the rotation of the first-gear planet wheels 73 will drive the first-gear planet carrier 72 to rotate. Since the first-gear carrier 72, the second-gear clutch housing 81, and the output gear set 9 are fixedly connected together, the first-gear carrier 72 drives the output gear set 9.
When only the reverse piston rod of the reverse clutch 4 has pressure (i.e. the reverse clutch 4 is in a connected state), the static friction plate and the dynamic friction plate of the reverse clutch 4 are tightly pressed together under the pushing of the piston rod, so that the reverse planet carrier 63 and the box body 1 are fixedly connected together and cannot rotate, the input shaft 3 drives the reverse sun gear 61, and the reverse sun gear 61 drives the reverse planet gear 62. Since the reverse planet carrier 63 is not rotating, rotation of the reverse planet gear 62 will drive the reverse ring gear 64. Since the reverse gear ring gear 64, the first-gear carrier 72, the second-gear clutch housing 81, and the output gear set 9 are fixedly connected together, the reverse gear ring gear 64 drives the output gear set 9.
In conclusion, the invention adopts a hydraulic driving mode and controls gears by using different clutches, so that the gear shifting is easy and quick without stopping and engaging gears. Because of the torque increasing function of the torque converter, the actual variable ratio can reach more than 9, so the traction force is large, and the climbing performance of the whole vehicle is good. In addition, because the hydraulic torque converter adopts a free guide wheel structure, the guide wheel can rotate freely in a single direction and lock in the opposite direction, when the torque ratio is less than 1, the guide wheel rotates in the opposite direction and the pump wheel rotates in the same direction, so that the efficiency of the hydraulic torque converter is obviously improved, and when the whole vehicle moves at high speed, the efficiency can reach more than 90%.
Claims (7)
1. The utility model provides a walking gearbox of wheeled excavator which characterized in that: the transmission device comprises a box body, wherein an input shaft, an output gear pair, a first-gear planetary gear transmission, a first-gear clutch and a second-gear clutch are arranged in the box body; a first-gear sun gear of the first-gear planetary gear transmission is fixedly connected to the input shaft, a first-gear planet carrier is fixedly connected to the output gear pair, and a first-gear ring is connected to the box body through a first-gear clutch.
2. The walking gearbox of wheeled excavator according to claim 1, characterized by: the reverse gear planetary gear transmission is fixedly connected to the input shaft, the reverse gear planet carrier is connected to the box body through the reverse gear clutch, and the reverse gear ring is fixedly connected to the output gear pair.
3. The walking gearbox of wheeled excavator according to claim 2, wherein: the reverse gear clutch, the first gear clutch and the second gear clutch are all hydraulic friction clutches.
4. The walking gearbox of wheeled excavator according to claim 3, characterized by: the reverse gear inner gear ring, the first gear planet carrier, the second gear clutch shell of the second gear clutch and the output gear pair are sequentially and fixedly connected.
5. A travel gearbox for a wheeled excavator according to any one of claims 1 to 3 wherein: the hydraulic pump and the variable-speed gear pump are both connected to a pump impeller of the hydraulic torque converter, and a turbine of the hydraulic torque converter is fixedly connected to the input shaft.
6. A method for operating a travel gearbox of a wheeled excavator according to claim 5, wherein: connecting a pump impeller of a hydraulic torque converter to an engine, and connecting an output gear pair to a front axle and a rear axle of a lower frame of the vehicle; when only the second clutch is in a joint state, the input shaft is fixedly connected with the second clutch shell, so that an output gear pair fixedly connected with the second clutch shell rotates at the same speed with the input shaft; when only the first-gear clutch is in an engaged state, the first-gear ring and the box body are fixedly connected together and cannot rotate, the input shaft drives the first-gear sun wheel, and the first-gear sun wheel drives the first-gear planet wheel; because the first gear ring does not rotate, the rotation of the first gear planet wheel drives the first gear planet carrier to rotate; because the first-gear planet carrier, the second-gear clutch shell and the output gear pair are fixedly connected together, the first-gear planet carrier drives the output gear pair.
7. The method for operating the traveling gearbox of the wheel excavator according to claim 6, wherein: when only the reverse gear clutch is in an engaged state, the reverse gear planet carrier and the box body are fixedly connected together and cannot rotate, the input shaft drives the reverse gear sun gear, and the reverse gear sun gear drives the reverse gear planet gear; because the reverse gear planet carrier does not rotate, the rotation of the reverse gear planet wheel drives the reverse gear ring; because the reverse gear ring, the first gear planet carrier, the second gear clutch shell and the output gear pair are fixedly connected together, the reverse gear ring drives the output gear pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042612.2A CN111140634A (en) | 2020-01-15 | 2020-01-15 | Walking gearbox of wheel type excavator and working method of walking gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010042612.2A CN111140634A (en) | 2020-01-15 | 2020-01-15 | Walking gearbox of wheel type excavator and working method of walking gearbox |
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| Publication Number | Publication Date |
|---|---|
| CN111140634A true CN111140634A (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010042612.2A Pending CN111140634A (en) | 2020-01-15 | 2020-01-15 | Walking gearbox of wheel type excavator and working method of walking gearbox |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2283976C1 (en) * | 2005-04-08 | 2006-09-20 | Общество с ограниченной ответственностью "КАТЕ" | Hydromechanical transmission |
| CN203078307U (en) * | 2013-01-15 | 2013-07-24 | 天津工程机械研究院 | Transmission used for hydraulic hybrid power loader |
| US20150354700A1 (en) * | 2013-02-28 | 2015-12-10 | Aisin Aw Co., Ltd. | Automatic transmission |
| CN205365238U (en) * | 2016-01-26 | 2016-07-06 | 吉林大学 | Power drive system based on single file star is arranged two and is kept off derailleur |
| CN109899410A (en) * | 2019-04-23 | 2019-06-18 | 吉林博承传动系统科技有限公司 | A kind of duplicate gear planet row type electric vehicle two keeps off gearbox and its shift control method |
| CN109899469A (en) * | 2019-04-23 | 2019-06-18 | 吉林博承传动系统科技有限公司 | A kind of planet gear type power failure-free two keeps off gearbox and its shift control method |
| CN211624128U (en) * | 2020-01-15 | 2020-10-02 | 郭向阳 | Walking gearbox of wheeled excavator |
-
2020
- 2020-01-15 CN CN202010042612.2A patent/CN111140634A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2283976C1 (en) * | 2005-04-08 | 2006-09-20 | Общество с ограниченной ответственностью "КАТЕ" | Hydromechanical transmission |
| CN203078307U (en) * | 2013-01-15 | 2013-07-24 | 天津工程机械研究院 | Transmission used for hydraulic hybrid power loader |
| US20150354700A1 (en) * | 2013-02-28 | 2015-12-10 | Aisin Aw Co., Ltd. | Automatic transmission |
| CN205365238U (en) * | 2016-01-26 | 2016-07-06 | 吉林大学 | Power drive system based on single file star is arranged two and is kept off derailleur |
| CN109899410A (en) * | 2019-04-23 | 2019-06-18 | 吉林博承传动系统科技有限公司 | A kind of duplicate gear planet row type electric vehicle two keeps off gearbox and its shift control method |
| CN109899469A (en) * | 2019-04-23 | 2019-06-18 | 吉林博承传动系统科技有限公司 | A kind of planet gear type power failure-free two keeps off gearbox and its shift control method |
| CN211624128U (en) * | 2020-01-15 | 2020-10-02 | 郭向阳 | Walking gearbox of wheeled excavator |
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