CN107355518B - Transmission for hydraulically driven wheel excavators - Google Patents
Transmission for hydraulically driven wheel excavators Download PDFInfo
- Publication number
- CN107355518B CN107355518B CN201710616326.0A CN201710616326A CN107355518B CN 107355518 B CN107355518 B CN 107355518B CN 201710616326 A CN201710616326 A CN 201710616326A CN 107355518 B CN107355518 B CN 107355518B
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- China
- Prior art keywords
- speed
- input shaft
- gear
- shaft
- low
- 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.)
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/78—Special adaptation of synchronisation mechanisms to these gearings
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H2003/445—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion without permanent connection between the input and the set of orbital gears
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2005—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with one sets of orbital gears
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a transmission of a hydraulic drive wheel type excavator, which comprises a box body, an input shaft, a high-speed driving gear, a low-speed driving gear, a front axle output shaft, a rear axle output shaft, a high-speed driven gear, a low-speed driven gear, a normally closed wet type hydraulic clutch mechanism, a planetary gear set and a synchronizer assembly, wherein the input shaft is rotatably arranged on the box body, the high-speed driving gear and the low-speed driving gear are rotatably arranged on the box body, the normally closed type wet type hydraulic clutch mechanism, the planetary gear set and the synchronizer assembly are arranged on the front axle output shaft and the rear axle output shaft, and the transmission force transmitted to the front axle output shaft and the rear axle output shaft by the input shaft can be cut off after the separation of the driving shaft and the input shaft, so that the transmission can shift gears in running, shift gears and impact are prevented, the damage of gears is effectively prevented, the cost is reduced, the maintenance rate is reduced, the cooperation of a plurality of shafts and the gears is reduced, the structure of products is compact, the size is small, the occupied space is small, the output of overspeed gear output and the low-speed large transmission ratio is realized, the work low-speed running and the high-speed running is improved, and the high-speed running with various transmission output ratios.
Description
Technical Field
The invention relates to a transmission, in particular to a transmission of a hydraulic driving wheel type excavator.
Background
Wheel type excavators have been widely used as multipurpose construction machines. The wheel type excavator is further divided into a mechanical driving wheel type excavator and a hydraulic driving wheel type excavator, and the hydraulic driving wheel type excavator is popular with users due to the characteristics of strong maneuverability, small impact during working, no need of special transportation tools and the like. However, the existing transmission of the hydraulic drive wheel excavator has the following defects:
1. The structure of the existing hydraulic drive wheel type excavator transmission can not realize gear shifting in running, especially when high and low speed gear shifting is needed under different working conditions;
2. Because the hydraulic drive wheel excavator needs to travel at a low speed during working and at a high speed during transition, the working efficiency can be improved, the structure of the transmission of the existing hydraulic drive wheel excavator mainly adopts a multi-shaft gear structure, and the structure cannot meet the requirements of low-speed working condition travel during working and high-speed travel during transition at the same time, and is complex in structure, large in size and large in occupied space.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the transmission of the hydraulic drive wheel type excavator, which has a compact structure and a small volume and can simultaneously meet the requirements of running under a low-speed working condition and running at a high speed during transition.
The invention is realized by the following technical scheme: the speed changer of hydraulic driving wheel type excavator includes box body, input shaft which can be rotatably placed on the box body and front and rear axle output shafts, on the input shaft a high-speed gear driving gear and a low-speed gear driving gear which are mounted by means of needle bearing are set, the front axle output shaft and the rear axle output shaft are provided with a high-speed driven gear and a low-speed driven gear which are matched and installed by needle bearings, and the front axle output shaft and the rear axle output shaft also comprise a normally closed wet type hydraulic clutch mechanism for hydraulically controlling the clutch of the driving shaft and the input shaft, a planetary gear set for outputting a low-speed ratio and a synchronizer assembly for high-low gear shifting;
The normally closed wet type hydraulic clutch mechanism comprises a clutch shell, a driving shaft, a clutch driven plate, a friction plate assembly, a friction plate pressure plate, a hydraulic cylinder, a piston, a return disc spring and a disc spring assembly, wherein the clutch shell is connected with a box body, the driving shaft is connected with an input shaft through a deep groove ball bearing, the clutch driven plate is arranged on the input shaft, the friction plate assembly is arranged on the driving shaft and is pressed and fixed through the friction plate pressure plate, the friction plate pressure plate and the piston are fixed on the driving shaft through a thrust bearing, the hydraulic cylinder is fixed with the clutch shell through a flange after being connected with the piston in a sealing way, the disc spring assembly arranged on the driving shaft is arranged between the piston and the flange, and the input end of the driving shaft is connected with a variable plunger motor;
The planetary gear set comprises a sun gear, a gear ring, a planet carrier and a plurality of planet gears, wherein the sun gear is fixed on an input shaft, the sun gear and the input shaft are integrally formed, the gear ring is fixedly locked with a clutch shell through bolts, each planet gear is arranged on the planet carrier and is simultaneously meshed with the sun gear and the gear ring, the planet carrier is sleeved on the input shaft and rotates around the input shaft, and a low-speed driving gear is fixedly connected with the planet carrier through bolts;
The synchronizer assembly is arranged on the front axle output shaft and the rear axle output shaft, and is connected with a piston shaft of the hydraulic cylinder through a shifting fork, and the gear shifting hydraulic cylinder is arranged on the box body.
Furthermore, tapered roller bearings I and flanges which are matched with the box body are respectively arranged at two ends of the front axle output shaft and the rear axle output shaft, and a bearing cover I and an oil seal for sealing the tapered roller bearings I are arranged between the flanges and the box body.
Furthermore, one end of the input shaft is provided with the tapered roller bearing II which is matched with the box body, the tapered roller bearing II at the end is in sealing connection with the box body through the bearing cover II, and the other end of the input shaft is provided with the tapered roller bearing III which is matched with the clutch shell.
Further, the clutch shell is provided with an oil inlet communicated with the inside of the hydraulic cylinder.
Furthermore, a spacer bush arranged on the input shaft is arranged between the high-speed driving gear and the low-speed driving gear.
Compared with the prior art, the invention has the following advantages:
1. The invention adds a normally closed wet type hydraulic clutch mechanism and a gear shifting synchronizer assembly, hydraulically controls the driving shaft to clutch with the input shaft, and can cut off the transmission force transmitted from the input shaft to the front axle output shaft and the rear axle output shaft after separation, so that the transmission can shift gears in running, prevent gear shifting impact, effectively prevent damage of gears, reduce cost and reduce maintenance rate.
2. The invention increases the planetary gear set, reduces the cooperation of a plurality of shafts and gears, ensures that the transmission has more compact structure, small volume and small occupied space, can realize overdrive output and output with low speed and large transmission ratio, improves running under low speed working condition and high speed running during transition, and has various transmission output ratios.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, the transmission of the hydraulic drive wheel type excavator of the present embodiment includes a case 1, an input shaft 2 rotatably provided on the case 1, a front and rear axle output shaft 3, a high-speed drive gear 11 and a low-speed drive gear 12 mounted on the input shaft 2 in cooperation with a needle bearing 10, a spacer 4 mounted on the input shaft 2 between the high-speed drive gear 11 and the low-speed drive gear 12, a high-speed driven gear 31 and a low-speed driven gear 32 mounted on the front and rear axle output shaft 3 in cooperation with a needle bearing 30, a normally closed wet clutch mechanism for hydraulically controlling the clutch of the drive shaft with the input shaft, a planetary gear set for outputting a low-speed ratio, and a synchronizer assembly 5 mounted on the front and rear axle output shaft 3, the synchronizer assembly 5 being mounted on the front and rear axle output shaft 3 and connected with a piston shaft 70 of a shift cylinder 7 through a fork 6, the shift cylinder 7 being mounted on the case 1.
The normally closed wet type hydraulic clutch mechanism comprises a clutch housing 80, a driving shaft 81, a clutch driven plate 82, a friction plate assembly 83, a friction plate pressure plate 84, a hydraulic cylinder 85, a piston 86, a return disc spring 87 and a disc spring assembly 801, wherein the clutch housing 80 is connected with a box body 1, the driving shaft 81 is connected with an input shaft 2 through a deep groove ball bearing 87, the clutch driven plate 82 is arranged on the input shaft 2, the friction plate assembly 83 is arranged on the driving shaft 81 and is tightly pressed and fixed through the friction plate pressure plate 84, the friction plate pressure plate 84 and the piston 86 are fixed on the driving shaft 81 through a thrust bearing 88, the hydraulic cylinder 85 is fixed with the clutch housing 80 through a flange 89 after being in airtight connection with the piston 86, the disc spring assembly 801 arranged on the driving shaft 81 is arranged between the piston 86 and the flange 89, and the input end of the driving shaft 81 is connected with a variable plunger motor 8.
The planetary gear set comprises a sun gear 20, a gear ring 21, a planet carrier 22 and a plurality of planet gears 23, wherein the sun gear 20 is fixed on an input shaft 2, the sun gear 20 and the input shaft 2 are integrally formed, the gear ring 21 is locked and fixed with a clutch housing 80 through bolts, each planet gear 23 is arranged on the planet carrier 22 and meshed with the sun gear 20 and the gear ring 21 simultaneously, the planet carrier 22 is sleeved on the input shaft 2 and rotates around the input shaft, the low-speed driving gear 12 is fixed with the planet carrier 22 through bolt connection, and the bolt connection can more conveniently output different speed ratios through replacing the low-speed driving gears 12 with different speed ratios.
Preferably, tapered roller bearings I33 and flanges 34 mounted in cooperation with the case 1 are respectively arranged at two ends of the front and rear axle output shafts 3, and a bearing cover I35 and an oil seal 36 for sealing the tapered roller bearings I33 are arranged between the flanges 34 and the case 1.
Preferentially, one end of the input shaft 2 is provided with a tapered roller bearing II13 which is matched with the box body 1, the tapered roller bearing II13 at the end is in sealing connection with the box body 1 through a bearing cover II14, the other end of the input shaft 2 is provided with a tapered roller bearing III15 which is matched with a clutch housing 80, and the clutch housing 80 is provided with an oil inlet hole 802 which is communicated with the inside of the gear shifting hydraulic cylinder 7.
When hydraulic oil is not communicated, the disc spring assembly 801 rebounds the piston 86 to press the friction plate pressure plate 84, so that the friction plate pressure plate 84 presses the friction plate assembly 83, the transmission force input by the driving shaft 81 can transmit torque to the friction plate pressure plate 84 through the friction plate assembly 83, the friction plate pressure plate 84 is fixed on the input shaft 2, the input shaft 2 has transmission force (namely, the input shaft 2 is combined with the driving shaft 81), when the hydraulic oil is communicated from the oil inlet 802 to the hydraulic cylinder 85, the piston 86 moves outwards to press the disc spring assembly 801, at the moment, the return disc spring 87 drives the friction plate pressure plate 84 to bounce the friction plate assembly 83, so that the friction plate assembly 83 does not transmit torque (namely, the driving shaft 81 is separated from the input shaft 2), the transmission force of the input shaft 2 can be cut off to the front and rear axle output shafts 3, the synchronizer assembly can easily transmit gear shifting sleeve teeth of a high-speed driven gear and a low-speed driven gear under the transmission of no transmission force, gear shifting impact can be prevented, the damage of the gear can be prevented, the cost is reduced, the maintenance rate is reduced, and the service life of the transmission is prolonged.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710616326.0A CN107355518B (en) | 2017-07-26 | 2017-07-26 | Transmission for hydraulically driven wheel excavators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710616326.0A CN107355518B (en) | 2017-07-26 | 2017-07-26 | Transmission for hydraulically driven wheel excavators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107355518A CN107355518A (en) | 2017-11-17 |
| CN107355518B true CN107355518B (en) | 2025-03-18 |
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ID=60284416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710616326.0A Active CN107355518B (en) | 2017-07-26 | 2017-07-26 | Transmission for hydraulically driven wheel excavators |
Country Status (1)
| Country | Link |
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| CN (1) | CN107355518B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340324B (en) * | 2018-12-19 | 2024-05-31 | 绍兴前进齿轮箱有限公司 | Power shift gear box for wheel excavator |
| CN109538714A (en) * | 2018-12-29 | 2019-03-29 | 江苏沃得农业机械有限公司 | A kind of novel power output drive mechanism |
| CN109826913B (en) * | 2019-03-31 | 2024-03-22 | 龙岩市万通机械有限公司 | Stepless speed change mechanism of hydraulic driving wheel type excavator |
| CN110735890B (en) * | 2019-11-13 | 2025-02-28 | 珠海格力智能装备有限公司 | Gearbox and gantry machining center |
| CN111853199B (en) * | 2020-08-05 | 2024-06-04 | 龙岩市万通机械有限公司 | Power gear-shifting speed variator for wheel excavator |
| CN113309831B (en) * | 2021-04-29 | 2025-04-01 | 太原矿机电气股份有限公司 | A variable speed drive traction system for a coal mine rack rail locomotive |
| CN115143240A (en) * | 2022-07-29 | 2022-10-04 | 深圳市恒希电器有限公司 | Gear box rotating mechanism |
| CN119554337B (en) * | 2024-12-02 | 2025-10-03 | 西南大学 | Energy-saving multi-plate clutch two-speed transmission and energy-saving shifting method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864226Y (en) * | 2005-12-26 | 2007-01-31 | 洛阳拖拉机研究所有限公司 | Tractor used power output clutch device with brake |
| WO2016111578A1 (en) * | 2015-01-09 | 2016-07-14 | 두산인프라코어 주식회사 | Automatic gear shifting method for construction machine and device for performing same |
| CN207034104U (en) * | 2017-07-26 | 2018-02-23 | 福建省晋江市科华汽配有限公司 | The speed changer of hydraulic-driven wheel excavator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1293043B (en) * | 1960-09-12 | 1969-04-17 | Sira S R L | Friction clutch for motor vehicles |
| DE3907382A1 (en) * | 1988-03-11 | 1989-09-21 | Zahnradfabrik Friedrichshafen | Drive device with a two-speed gear unit |
| DE19720129B4 (en) * | 1996-05-25 | 2010-12-02 | Volkswagen Ag | Change gear with a reverse gear |
| KR101279730B1 (en) * | 2011-12-22 | 2013-06-27 | (주)아진게네시스 | Automatic shifting device for the electricvehicle |
| JP6156106B2 (en) * | 2013-12-03 | 2017-07-05 | スズキ株式会社 | Outboard motor |
| CN103953697B (en) * | 2014-05-26 | 2016-08-17 | 雷沃重工股份有限公司 | A kind of tractor dynamic power high and low shift structure |
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2017
- 2017-07-26 CN CN201710616326.0A patent/CN107355518B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864226Y (en) * | 2005-12-26 | 2007-01-31 | 洛阳拖拉机研究所有限公司 | Tractor used power output clutch device with brake |
| WO2016111578A1 (en) * | 2015-01-09 | 2016-07-14 | 두산인프라코어 주식회사 | Automatic gear shifting method for construction machine and device for performing same |
| CN207034104U (en) * | 2017-07-26 | 2018-02-23 | 福建省晋江市科华汽配有限公司 | The speed changer of hydraulic-driven wheel excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107355518A (en) | 2017-11-17 |
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| SE01 | Entry into force of request for substantive examination | ||
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Country or region after: China Address after: No. 28, Wucuo Dongsheng Road, Batou village, Anhai Town, Jinjiang City, Quanzhou City, Fujian Province, 362200 Applicant after: Fujian Kehua Transmission Machinery Co.,Ltd. Address before: Anhaibatou Industrial Zone, Quanzhou City, Fujian Province Applicant before: JINJIANG KEHUA AUTOMOBILE FITTINGS Co.,Ltd. Country or region before: China |
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