CN107630984A - A kind of change-speed system for tractor - Google Patents
A kind of change-speed system for tractor Download PDFInfo
- Publication number
- CN107630984A CN107630984A CN201710883792.5A CN201710883792A CN107630984A CN 107630984 A CN107630984 A CN 107630984A CN 201710883792 A CN201710883792 A CN 201710883792A CN 107630984 A CN107630984 A CN 107630984A
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- gear
- shaft
- power
- driving
- change
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Abstract
The invention discloses a kind of change-speed system for tractor, by setting the first driving gear on driving shaft, first output gear is set on power output shaft, and with setting a travelling gear on power output shaft respectively, travelling gear can rotate driving shaft relative to driving shaft or power output shaft.During work, engine operating outputs power to driving shaft, and driving shaft drives the first driving gear run-in synchronism, and power is exported to load by the first driving gear, travelling gear, the first output gear successively.Realize that at least three-level is driven by using two axles, to realize the use for reducing power transmission shaft, save installing space, be easy to the purpose of the arrangement of complete machine.Control the wet clutch for being integrated in transmission internal to realize the input and cut-out of engine power using pilot operated valve device, fast response time, reduce friction plate with respect to skimming wear, solve the problems, such as heating, loss in efficiency and reliability.
Description
Technical field
The invention belongs to gearbox designs design field, and in particular to a kind of change-speed system for tractor.
Background technology
In tractor transmission system, gearbox contains most of important part, be in Tractor Products design most
Paid attention to and new technology, new technology use most parts.By setting gearbox by after the power speed changing of tractor engine
The rotating speed of necessary requirement is exported to loading, to drive the normal operation of each mechanism of tractor.
In gear box of tractor Gear Transmission Design, increase primary transmission needs to increase a power transmission shaft, in tractor
Three-stage cylindrical gear is generally required on gearbox, it is therefore desirable to which four power transmission shafts arrange transmission mechanism, empty so as to take installation
Between size it is larger, it has not been convenient to the integral arrangement of main frame.
In addition, clutch is pith essential on tractor, he is transmitted to for transmitting and cutting off engine
The power of gearbox and PTO, and prevent power train to be damaged with part during PTO excess load.Pass
Dry clutch is connected between the tractor engine and power output speed changing box of system, in use, controlling clutch by pedal
Device clutch action, starting to clutch to work completely under foot pedal has one section of idle stroke, and now clutch friction sector-meeting goes out
Existing dry friction heating and Fast Wearing, influence life of clutch, growth over time, clutch frictional torque is inadequate, in work
Also relative motion occurs when making between friction plate, now not only heating influences the life-span, while also influences mechanical efficiency.
Therefore, in view of problem above, it is necessary to a kind of new change-speed system for tractor is proposed, to realize reduction power transmission shaft
Use, save installing space, be easy to the arrangement of complete machine, while reduce the damage of clutch, improve clutch stability and
Reliability.
The content of the invention
In view of this, the invention provides a kind of change-speed system for tractor, realize that at least three-level passes by using two axles
It is dynamic, to realize the use for reducing power transmission shaft, installing space is saved, is easy to the purpose of the arrangement of complete machine, while uses wet type clutch
Device, the damage of clutch is reduced, improve the stability and reliability of clutch.
A kind of change-speed system for tractor proposed according to the purpose of the present invention, is connected, the change with the output end of engine
Speed system includes gearbox, control valve and clutch, and the gearbox includes casing and is arranged at the of the box house
One speed change chamber, driving shaft and power output shaft are arranged with parallel in the first speed change cavity room, first is provided with driving shaft actively
Gear, the first output gear is provided with power output shaft, the driving shaft with least setting respectively on the power output shaft
There is a travelling gear, the travelling gear can rotate relative to driving shaft or power output shaft；
During work, engine operating outputs power to driving shaft, and driving shaft drives the first driving gear run-in synchronism, moves
Power is exported to load by the first driving gear, travelling gear, the first output gear successively, and power at least realizes that three-level transmission becomes
Speed.
Preferably, the clutch is arranged at the box house.
Preferably, the clutch is wet clutch, and the wet clutch controls clutch by control valve.
Preferably, the control valve is pilot operated valve device, and the pilot operated valve device control pressure oil enters in the piston cavity of clutch
Control the clutch of clutch.
Preferably, the pilot operated valve device is connected with a gear pump, and the gear pump is connected to the bottom position of gearbox through oil pipe
Put, gear pump operating draws gear-box lubricating oil from gearbox bottom, and exports supply pilot operated valve device, and pilot operated valve device control pressure oil enters
Enter in the piston cavity of clutch.
Preferably, first driving gear is change-speed gearing, and first driving gear connects with the driving shaft spline
Connect, with driving shaft run-in synchronism；First output gear is connected with power output shaft spline, drives power output shaft with first
The synchronization operating of output gear；The duplicate gear that the travelling gear includes being arranged on driving shaft respectively is dynamic with being arranged at
Triple gear on power output shaft；Engine operating outputs power to driving shaft, and power is successively through change-speed gearing, three teeth
Output extremely loads after wheel, duplicate gear, the first output gear.
Preferably, the duplicate gear is supported in the driving shaft or power with the triple gear by needle bearing
On output shaft, the duplicate gear can be rotated with the triple gear relative to driving shaft or power output shaft and movement.
Preferably, it is integrated with travel driving system on the gearbox.
Preferably, the box house is additionally provided with the second speed change chamber, is arranged with parallel in the second speed change cavity room
Input shaft and power transmission shaft, the input shaft on power transmission shaft with being provided with intermeshing second driving gear and the second output gear
Wheel, engine operating output power to input shaft, and power is defeated after the second driving gear, the second output gear speed change successively
Go out to power transmission shaft, transmission and be pivotally connected to the travel driving system of tractor；The output shaft be fixedly connected with the driving shaft or
Drive connection.
Preferably, the casing top of the gearbox is integrated with tractor hoisting mechanism.
Compared with prior art, it is the advantages of change-speed system for tractor disclosed by the invention：
1) by setting the first driving gear on driving shaft, the first output gear, driving shaft are set on power output shaft
With setting a travelling gear on power output shaft respectively, travelling gear can rotate relative to driving shaft or power output shaft.Work
When, engine operating outputs power to driving shaft, and driving shaft drives the first driving gear run-in synchronism, and power is successively by the
One driving gear, travelling gear, the first output gear are exported to load.Realize that at least three-level is driven by using two axles, with
The use for reducing power transmission shaft is realized, saves installing space, is easy to the purpose of the arrangement of complete machine.
2) control the clutch for being integrated in transmission internal to realize the input and cut-out of engine power using pilot operated valve device, ring
Answer speed fast, reduce friction plate with respect to skimming wear.
3) clutch uses wet type clutch, solves the problems, such as heating, loss in efficiency and reliability.
4) gear pump to pilot operated valve device fuel feeding directly uses gear-box lubricating oil, convenient radiating, while reduces system oil
Casing accumulates.
5) gearbox is integrated with hoisting mechanism and travel driving system, improves level of integrated system, facilitates main frame to arrange.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of speed change system disclosed by the invention.
The title of digital or alphabetical representative corresponding component in figure：
1st, control valve 2, input shaft 3, hoisting mechanism integrated interface 4, clutch 5, change-speed gearing 6, duplicate gear
7th, driving shaft 8, power output shaft 9, gear pump inlet port 10, the first output gear 11, triple gear 12, power transmission shaft
13rd, gear pump 14, the first speed change chamber 15, the second speed change chamber 16, the second driving gear 17, the second output gear 18,
Casing
Embodiment
Just as described in the background section, four power transmission shaft realities are needed in the Gear Transmission Design of traditional gear box of tractor
Existing three-level transmission, it is larger to take installing space size.And the control for inputting or cutting off as gearbox dynamic using dry clutch
Element processed, the problems such as caloric value is big, and mechanical efficiency loss is high, poor reliability be present.
The present invention is directed to deficiency of the prior art, there is provided a kind of change-speed system for tractor, by using two axle realities
Now at least three-level is driven, and to realize the use for reducing power transmission shaft, is saved installing space, is easy to the purpose of the arrangement of complete machine, simultaneously
Using wet clutch, the damage of clutch is reduced, improves the stability and reliability of clutch.
Technical scheme will be clearly and completely described by embodiment below.Obviously, retouched
The embodiment stated is only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention
The scope of protection.
Fig. 1 is referred to, as illustrated, a kind of change-speed system for tractor, is connected with the output end of engine, the speed change system
Including gearbox, control valve 1 and clutch 4, gearbox includes casing 18 and is arranged at the first speed change chamber of box house
14, driving shaft 7 and power output shaft 8 are arranged with parallel in the first speed change chamber 14, and the first driving tooth is provided with driving shaft 7
Take turns, the first output gear 10 is provided with power output shaft 8, driving shaft 7 on power output shaft 8 with being at least respectively arranged with a biography
Moving gear, travelling gear can rotate relative to driving shaft or power output shaft；During work, engine operating outputs power to master
Moving axis, driving shaft drive the first driving gear run-in synchronism, and power is successively by the first driving gear, travelling gear, first defeated
Go out gear and export to load, power at least to realize three-step gear shift.Realize that at least three-level is driven, and subtracts to realize by using two axles
The use of few power transmission shaft, saves installing space, is easy to the purpose of the arrangement of complete machine.
Preferably, the first driving gear is change-speed gearing 5, and the first driving gear is connected with the spline of driving shaft 7, with driving shaft
7 run-in synchronisms, the first output gear 10 are connected with the spline of power output shaft 8, drive power output shaft 8 with the first output gear 10
Synchronization operating.The wherein output gear 10 of change-speed gearing 5 and first can be axially moveable, so as not between same gear
Engagement, adjusts different gearratios.
Travelling gear includes the duplicate gear 6 being arranged on driving shaft 7 and be arranged on power output shaft 8 three respectively
Gear 11；Engine operating outputs power to driving shaft 7, and power is successively through change-speed gearing 5, triple gear 11, duplicate gear
6th, output is to power output shaft 8 after the first output gear 10, driving load afterwards.Because the first driving gear is change in the application
Fast gear 5, by the cooperation of the change-speed gearing 5 and triple gear 11, the regulation of two kinds of different drive ratios can be achieved.Other are implemented
In example can adjustment gear as needed quantity and type, so as to realize the transmission of required series.
Preferably, duplicate gear 6 is supported in driving shaft 7 or power output shaft 8 with triple gear 11 by needle bearing
On, duplicate gear 6 can be rotated with triple gear 11 relative to driving shaft 7 or power output shaft 8 and movement, to realize multiple biographies
The regulation of dynamic ratio.
In addition, driving shaft and also settable multiple duplicate gears or triple gear or nest etc. on power output shaft,
To realize Multi-stage transmission, depending on specific setting form is as needed, it is not limited herein.
Further, clutch 4 is arranged at box house.By the way that clutch is arranged on into box house, reduce whole
The volume of system.Meanwhile clutch is wet clutch, wet clutch controls clutch by control valve, solves heating, effect
The problem of rate loss and reliability.Clutch may also be arranged on the outside of gearbox in other embodiment, specific to set form not
It is limited.
Control valve 1 is pilot operated valve device, pilot operated valve device control pressure oil enter control clutch 4 in the piston cavity of clutch from
Close.The clutch for being integrated in transmission internal is controlled to realize the input and cut-out of engine power, response speed using pilot operated valve device
It hurry up, reduce friction plate with respect to skimming wear.
Further, pilot operated valve device is connected with a gear pump 13, and gear pump 13 is connected to the bottom position of gearbox through oil pipe,
The opening position is provided with gear pump inlet port 9, and gear pump 13 operates from gearbox bottom and draws gear-box lubricating oil, and exports confession
To pilot operated valve device, pilot operated valve device control pressure oil enters in the piston cavity of clutch 4.Gear pump to pilot operated valve device fuel feeding directly uses
Gear-box lubricating oil, convenient radiating, while reduce system oil box product.
Further, travel driving system is integrated with gearbox.Box house is additionally provided with the second speed change chamber 15, main
Moving axis 7 is extended in the second speed change chamber 15, and the part in the second speed change chamber 15 forms input shaft 2, the second speed change cavity
The power transmission shaft 12 being be arranged in parallel with driving shaft is additionally provided with room 15, input shaft 2 is intermeshing with being provided with power transmission shaft 12
Second driving gear 16 and the second output gear 17, engine operating output power to input shaft 2, and power passes through second successively
Outputed power after driving gear 16, the speed change of the second output gear 17, power transmission shaft 12 is connected with hoofing part pump, and power is transmitted
To travel driving system.Wherein input shaft 2 can be two parts of a root long axle with driving shaft 7, or be driven and set or fix
Two axles set, realize input shaft with being operated while driving shaft by the operating of engine.
In addition, the casing top of gearbox is provided with hoisting mechanism integrated interface 3, to integrate tractor hoisting mechanism,
Level of integrated system is improved, facilitates main frame to arrange.
Operation principle of the present invention is as follows：
Engine power passes to input shaft 2, and gear pump 13 is from oil suction at the gear pump inlet port 9 of speed change lower box part, tooth
The fuel-displaced supply control valve 1 of wheel pump 13, operation control valve 1 make pressure oil enter the piston cavity of clutch 4, and clutch 4 is started working,
The power of input shaft 2 passes to driving shaft 7, and driving shaft 7 is connected with the spline of change-speed gearing 5, and the passing power of change-speed gearing 5 gives three
Gear 11, needle roller bearing support is used between triple gear 11 and power output shaft 8, can again will with relative motion, triple gear 11
Power transmission also uses needle roller bearing support to duplicate gear 6 between duplicate gear 6 and driving shaft 7, can be with relative motion, duplex
Gear 6 imparts power to the first output gear 10, is connected between the first output gear 10 and power output shaft 8 using spline,
Power passes to power output shaft 8 and exported.8 liang of axles of driving shaft 7 and power output shaft realize three-level transmission.On input shaft 2
Second driving gear 16 is engaged with the second output gear 17 on power transmission shaft 12 simultaneously, and power transmission shaft 12 is connected with hoofing part pump,
Impart power to travel driving system.
To sum up, the invention discloses a kind of change-speed system for tractor, by setting the first driving gear on driving shaft, move
First output gear is set on power output shaft, and driving shaft with setting a travelling gear, travelling gear energy respectively on power output shaft
It is enough to be rotated relative to driving shaft or power output shaft.During work, engine operating outputs power to driving shaft, and driving shaft drives the
One driving gear run-in synchronism, power are exported to load by the first driving gear, travelling gear, the first output gear successively.
Realize that at least three-level is driven by using two axles, to realize the use for reducing power transmission shaft, save installing space, be easy to complete machine
The purpose of arrangement.The wet clutch that transmission internal is integrated in using pilot operated valve device control realizes the input of engine power with cutting
It is disconnected, fast response time, reduce friction plate with respect to skimming wear, solve the problems, such as heating, loss in efficiency and reliability.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of change-speed system for tractor, it is connected with the output end of engine, it is characterised in that the speed change system includes speed change
Case, control valve and clutch, the gearbox include casing and are arranged at the first speed change chamber of the box house, and first
It is arranged with driving shaft and power output shaft in speed change cavity room in parallel, the first driving gear, power output shaft is provided with driving shaft
On be provided with the first output gear, the driving shaft on the power output shaft with being at least respectively arranged with a travelling gear, institute
Stating travelling gear can rotate relative to driving shaft or power output shaft；
During work, engine operating outputs power to driving shaft, and driving shaft drives the first driving gear run-in synchronism, power according to
It is secondary to export to load, power by the first driving gear, travelling gear, the first output gear and at least realize three-level transmission gear shift.
2. change-speed system for tractor according to claim 1, it is characterised in that the clutch is arranged in the casing
Portion.
3. change-speed system for tractor according to claim 1, it is characterised in that the clutch is wet clutch, institute
State wet clutch and clutch is controlled by control valve.
4. change-speed system for tractor according to claim 3, it is characterised in that the control valve is pilot operated valve device, the liquid
Control the clutch that valve control pressure oil enters control clutch in the piston cavity of clutch.
5. change-speed system for tractor according to claim 4, it is characterised in that the pilot operated valve device is connected with a gear pump,
The gear pump is connected to the bottom position of gearbox through oil pipe, and gear pump operating draws gearbox lubrication from gearbox bottom
Oil, and supply pilot operated valve device is exported, pilot operated valve device control pressure oil enters in the piston cavity of clutch.
6. change-speed system for tractor according to claim 1, it is characterised in that first driving gear is gear teeth
Wheel, first driving gear is connected with the driving shaft spline, with driving shaft run-in synchronism；First output gear is with moving
Power output shaft spline connects, and drives power output shaft to be operated with the synchronization of the first output gear；The travelling gear difference
Including the duplicate gear being arranged on driving shaft and the triple gear being arranged on power output shaft；Engine operating is defeated by power
Go out to driving shaft, output extremely loads power after change-speed gearing, triple gear, duplicate gear, the first output gear successively.
7. change-speed system for tractor according to claim 6, it is characterised in that the duplicate gear and the triple gear
It is supported in by needle bearing on the driving shaft or power output shaft, the duplicate gear being capable of phase with the triple gear
Driving shaft or power output shaft are rotated and mobile.
8. according to the change-speed system for tractor described in claim any one of 1-7, it is characterised in that be integrated with the gearbox
Travel driving system.
9. change-speed system for tractor according to claim 8, it is characterised in that the box house is additionally provided with the second change
Fast chamber, input shaft and power transmission shaft is arranged with parallel in the second speed change cavity room, the input shaft on power transmission shaft with being provided with
Intermeshing second driving gear and the second output gear, engine operating output power to input shaft, and power passes through successively
Output to power transmission shaft, transmission is pivotally connected to the hoofing part system of tractor after crossing the second driving gear, the second output gear speed change
System；The output shaft is fixedly connected or is connected with the driving shaft.
10. according to the change-speed system for tractor described in claim any one of 1-7, it is characterised in that the casing of the gearbox
Top is integrated with tractor hoisting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883792.5A CN107630984A (en) | 2017-09-26 | 2017-09-26 | A kind of change-speed system for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883792.5A CN107630984A (en) | 2017-09-26 | 2017-09-26 | A kind of change-speed system for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107630984A true CN107630984A (en) | 2018-01-26 |
Family
ID=61103412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710883792.5A Pending CN107630984A (en) | 2017-09-26 | 2017-09-26 | A kind of change-speed system for tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107630984A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206864A (en) * | 2019-03-18 | 2019-09-06 | 江苏大学 | A kind of tractor machines-fluid power parallel power coupling gearbox |
| CN110529564A (en) * | 2019-08-30 | 2019-12-03 | 重庆隆旺机电有限责任公司 | Override type gear interlock power-driven system |
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| CN2888821Y (en) * | 2005-11-03 | 2007-04-18 | 田奎 | Dual-purposed apparatus for driving agricultural machinery and trailer by outputted power of hand tractor |
| EP1816375A2 (en) * | 2006-02-07 | 2007-08-08 | Deere & Company | Gear assembly |
| JP2009201486A (en) * | 2008-02-29 | 2009-09-10 | Iseki & Co Ltd | Tiller |
| CN202867784U (en) * | 2012-11-02 | 2013-04-10 | 湖南农业大学 | Agricultural machinery gearbox with double-power output |
| CN203009739U (en) * | 2012-12-28 | 2013-06-19 | 山拖农机装备有限公司 | Tractor gearbox |
| CN104890506A (en) * | 2015-06-26 | 2015-09-09 | 湖南农夫机电有限公司 | Travelling transmission mechanism for tracked vehicle |
| CN205155049U (en) * | 2015-11-26 | 2016-04-13 | 常州东风农机集团有限公司 | Wheeled tractor gearbox no. 3 keeps off variable speed structure |
| CN106641120A (en) * | 2017-02-15 | 2017-05-10 | 苏州萨伯工业设计有限公司 | Three-gear variable-speed transmission method |
| CN107023666A (en) * | 2017-06-17 | 2017-08-08 | 山东潍坊鲁中拖拉机有限公司 | Tractor hydraulic gearshift |
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2017
- 2017-09-26 CN CN201710883792.5A patent/CN107630984A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888821Y (en) * | 2005-11-03 | 2007-04-18 | 田奎 | Dual-purposed apparatus for driving agricultural machinery and trailer by outputted power of hand tractor |
| EP1816375A2 (en) * | 2006-02-07 | 2007-08-08 | Deere & Company | Gear assembly |
| JP2009201486A (en) * | 2008-02-29 | 2009-09-10 | Iseki & Co Ltd | Tiller |
| CN202867784U (en) * | 2012-11-02 | 2013-04-10 | 湖南农业大学 | Agricultural machinery gearbox with double-power output |
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| CN104890506A (en) * | 2015-06-26 | 2015-09-09 | 湖南农夫机电有限公司 | Travelling transmission mechanism for tracked vehicle |
| CN205155049U (en) * | 2015-11-26 | 2016-04-13 | 常州东风农机集团有限公司 | Wheeled tractor gearbox no. 3 keeps off variable speed structure |
| CN106641120A (en) * | 2017-02-15 | 2017-05-10 | 苏州萨伯工业设计有限公司 | Three-gear variable-speed transmission method |
| CN107023666A (en) * | 2017-06-17 | 2017-08-08 | 山东潍坊鲁中拖拉机有限公司 | Tractor hydraulic gearshift |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206864A (en) * | 2019-03-18 | 2019-09-06 | 江苏大学 | A kind of tractor machines-fluid power parallel power coupling gearbox |
| CN110529564A (en) * | 2019-08-30 | 2019-12-03 | 重庆隆旺机电有限责任公司 | Override type gear interlock power-driven system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180126 |
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| RJ01 | Rejection of invention patent application after publication |