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CN108087504A - Gearbox and tractor - Google Patents

Gearbox and tractor Download PDF

Info

Publication number
CN108087504A
CN108087504A CN201810089275.5A CN201810089275A CN108087504A CN 108087504 A CN108087504 A CN 108087504A CN 201810089275 A CN201810089275 A CN 201810089275A CN 108087504 A CN108087504 A CN 108087504A
Authority
CN
China
Prior art keywords
gear
load
grade
driving gear
driven gear
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
Application number
CN201810089275.5A
Other languages
Chinese (zh)
Inventor
王志全
李建启
亓文正
潘龙龙
赵文科
韩涛
张西忠
付帅
金成斌
杨冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lovol Heavy Industry Co Ltd
Original Assignee
Lovol Heavy Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lovol Heavy Industry Co Ltd filed Critical Lovol Heavy Industry Co Ltd
Priority to CN201810089275.5A priority Critical patent/CN108087504A/en
Publication of CN108087504A publication Critical patent/CN108087504A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H3/00Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/087Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/023Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H63/00Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30Constructional features of the final output mechanisms

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The present invention relates to gear box of tractor technical field more particularly to a kind of gearboxes and tractor.Gearbox includes load speed changing portion, main speed changing portion and secondary speed changing portion;Load speed changing portion, main speed changing portion and secondary speed changing portion are sequentially connected;Loading speed changing portion includes load input shaft, load output shaft, the high-grade driving gear of load, the high-grade driven gear of load, the low-grade driving gear of load, the low-grade driven gear of load, reverse driving gear, reverse gear driven gear, the first synchronizer and wet clutch;Reverse driving gear, the first synchronizer, the high-grade driving gear of load and the low-grade driving gear of load are on load input shaft;Reverse gear driven gear, the high-grade driven gear of load, wet clutch and the low-grade driven gear of load are on load output shaft;Wet clutch is coaxially connected with load output shaft;Load output shaft is connected with main speed changing portion.The present invention realizes the variation that high and low shift is carried out in the state of load by wet clutch, improves operating efficiency.

Description

Gearbox and tractor
Technical field
The present invention relates to the gearbox technical field of tractor, more particularly, to a kind of gearbox and tractor.
Background technology
At present, tractor is mainly using two kinds of gear changing modes of engaging sleeve and synchronizer, tractor in operation process, if Gear shift needs is needed to first pass through separation clutch cut-out engine power, then operate gear shifting handle switching different stalls, are manipulated numerous It is trivial, operating efficiency is reduced, time-consuming, excessive fuel consumption.
The content of the invention
It is an object of the invention to provide a kind of gearbox and tractors, are asked with solving technology in the prior art Topic.
Gearbox provided by the invention, including load speed changing portion, main speed changing portion and secondary speed changing portion;
The load speed changing portion, the main speed changing portion and the secondary speed changing portion are sequentially connected;
The load speed changing portion is driven including load input shaft, load output shaft, the high-grade driving gear of load, load top grade Gear, the low-grade driving gear of load, the low-grade driven gear of load, reverse driving gear, reverse gear driven gear, the first synchronizer and Wet clutch;
The reverse driving gear, first synchronizer, the high-grade driving gear of the load and the load are low-grade main Moving gear is co-axially located on the load input shaft, and the high-grade driving gear of the load and the low-grade driving tooth of the load Wheel is arranged on the same side of first synchronizer, and the reverse driving gear is arranged on the opposite side of first synchronizer;
The reverse gear driven gear, the high-grade driven gear of the load, the wet clutch and the load it is low-grade from Moving gear is co-axially located on the load output shaft, and the reverse gear driven gear and the high-grade driven gear of the load are set It puts in the same side of the wet clutch, the low-grade driven gear of load is arranged on the opposite side of the wet clutch;
The reverse driving gear and reverse gear driven gear engagement;
The high-grade driving gear of load and the high-grade driven gear engagement of the load;
The low-grade driving gear of load and the low-grade driven gear engagement of the load;
The wet clutch and the load output shaft are coaxially connected;
The load output shaft is connected with the main speed changing portion.
Further, it is driven between the reverse driving gear and the reverse gear driven gear by reverse idler gear;
The reverse idler gear is co-axially located on idler shaft, and driven with the reverse driving gear and the reverse gear respectively Gear engages.
Further, load often engagement driving gear is also coaxially arranged on the load output shaft;
The opposite side that driving gear is arranged on the wet clutch is often engaged in the load;
Often engagement driving gear often engages driven gear engagement with loading for the load;
Often engagement driven gear is connected with the main speed changing portion for the load.
Further, gearbox further includes controller;
The controller is connected with the wet clutch, can control the connection status of the wet clutch.
Further, it is described to load high-grade driving gear and the low-grade driving gear of the load coaxially and be wholely set.
Further, the main speed changing portion include main transmission input shaft, main transformer speed output shaft, one grade of driving gear, one grade Driven gear, two grades of driving gears, two grades of driven gears and the second synchronizer;
One end of the main transmission input shaft is connected with the load speed changing portion;
One grade of driving gear and two grades of driving gears are co-axially located on the main transmission input shaft;
The first speed driven gear, two grades of driven gears and second synchronizer are co-axially located at the main transformer speed On output shaft;
The first speed driven gear and two grades of driven gears are separately positioned on the both ends of second synchronizer;
One grade of driving gear is engaged with the first speed driven gear;
Two grades of driving gears are engaged with two grades of driven gears.
Further, it is driven to further include third speed drive gear, third gear driven gear, fourth gear driving gear, fourth gear for gearbox Gear and the 3rd synchronizer;
The third speed drive gear, the fourth gear driving gear and the 3rd synchronizer are co-axially located at the main transformer On fast input shaft;
The third speed drive gear and the fourth gear driving gear are separately positioned on the both ends of the 3rd synchronizer;
The third gear driven gear and the fourth gear driven gear are co-axially located on the main transformer speed output shaft;
The third speed drive gear is engaged with the third gear driven gear;
The fourth gear driving gear is engaged with the fourth gear driven gear.
Further, the secondary speed changing portion includes secondary transmission input shaft, secondary speed change output shaft, secondary speed change low grade driving tooth Wheel, secondary speed change low grade driven gear, secondary speed change middle-grade driving gear, secondary speed change middle-grade driven gear, middle-grade engaging sleeve and height Shelves engaging sleeve;
The pair speed change low grade driving gear, the secondary speed change middle-grade driving gear and the middle-grade engaging sleeve are coaxially set It puts on the secondary transmission input shaft;
The pair speed change low grade driving gear, the secondary speed change middle-grade driving gear are separately positioned on the middle-grade engaging sleeve Both ends;
The high and low shift engaging sleeve, the secondary speed change low grade driven gear, the secondary speed change middle-grade driven gear are coaxial It is arranged on the secondary speed change output shaft;
The pair speed change low grade driven gear, the secondary speed change middle-grade driven gear are arranged on the high and low shift engaging sleeve The same end;
The pair speed change low grade driving gear is engaged with the secondary speed change low grade driven gear;
The pair speed change middle-grade driving gear is engaged with the secondary speed change middle-grade driven gear.
Further, gearbox further includes that secondary speed change often engages driving gear and secondary speed change often engages driven gear;
The output terminal that the pair speed change often engages driving gear and the main speed changing portion is coaxially connected;
The pair speed change often engages driving gear and often engages driven gear engagement with the secondary speed change;
The pair speed change often engages driven gear and is coaxially fixed on the secondary transmission input shaft;
The high and low shift engaging sleeve often engages driving gear coaxial arrangement with the secondary speed change.
The present invention also provides a kind of tractor, including gearbox described in any one of the above embodiments.
Gearbox and tractor provided by the invention are realized by wet clutch in the state of load, carry out height The variation of shelves, and then steady more range shift, behaviour can be realized in the state of engine power is not cut off in operation interval It is vertical simple, improve operating efficiency.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the fundamental diagram of gearbox provided in an embodiment of the present invention.
Reference numeral:
1:Load speed changing portion;
1-1:Reverse driving gear;1-2:First synchronizer;1-3:The high-grade driving gear of load;1-4:Load is low-grade actively Gear;1-5:Driven gear is often engaged in load;1-6:Reverse idler gear;1-7:Reverse gear driven gear;1-8:The high-grade driven tooth of load Wheel;1-9:Wet clutch;1-10:The low-grade driven gear of load;1-11:Driving gear is often engaged in load;
2:Main speed changing portion;
2-1:One grade of driving gear;2-2:Two grades of driving gears;2-3:Third speed drive gear;2-4:3rd synchronizer;2- 5:Fourth gear driving gear;2-6:First speed driven gear;2-7:Second synchronizer;2-8:Two grades of driven gears;2-9:Third gear is driven Gear;2-10:Fourth gear driven gear;
3:Secondary speed changing portion;
3-1:Secondary speed change often engages driven gear;3-2:Secondary speed change low grade driving gear;3-3:Middle-grade engaging sleeve;3-4:It is secondary Speed change middle-grade driving gear;3-5:Secondary speed change often engages driving gear;3-6:High and low shift engaging sleeve;3-7:Secondary speed change low grade is driven Gear;3-8:Secondary speed change middle-grade driven gear;
S1:Load input shaft;S2:Load output shaft;S3:Main transmission input shaft;S4:Main transformer speed output shaft;S5:Secondary speed change Input shaft;S6:Secondary speed change output shaft;S7:Idler shaft.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ", The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
In addition, term " first ", " second ", " the 3rd " are only used for description purpose, and it is not intended that instruction or implying phase To importance.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected;It can To be mechanical connection or be electrically connected;It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.
As shown in Figure 1, the present invention provides a kind of gearbox, including load speed changing portion 1, main speed changing portion 2 and secondary speed change Portion 3;
The load speed changing portion 1, the main speed changing portion 2 and the secondary speed changing portion 3 are sequentially connected;
The load speed changing portion 1 includes load input shaft, load output shaft, the high-grade driving gear 1-3 of load, load top grade Driven gear 1-8, the low-grade driving gear 1-4 of load, the low-grade driven gear 1-10 of load, reverse driving gear 1-1, reverse gear are driven Gear 1-7, the first synchronizer 1-2 and wet clutch 1-9;
The reverse driving gear 1-1, the first synchronizer 1-2, it is described load top grade driving gear 1-3 and it is described bear It carries low grade driving gear 1-4 to be co-axially located on the load input shaft, and described loads top grade driving gear 1-3 and described Load low grade driving gear 1-4 is arranged on the same side of the first synchronizer 1-2, and the reverse driving gear 1-1 is arranged on The opposite side of the first synchronizer 1-2;
The reverse gear driven gear 1-7, the high-grade driven gear 1-8 of the load, the wet clutch 1-9 and described negative Carry low grade driven gear 1-10 be co-axially located on the load output shaft, and the reverse gear driven gear 1-7 and it is described bear The same side that top grade driven gear 1-8 is arranged on the wet clutch 1-9 is carried, the low-grade driven gear 1-10 of load is set In the opposite side of the wet clutch 1-9;
The reverse driving gear 1-1 and reverse gear driven gear 1-7 engagements;
The load top grade driving gear 1-3 and the high-grade driven gear 1-8 engagements of the load;
The load low grade driving gear 1-4 and the low-grade driven gear 1-10 engagements of the load;
The wet clutch 1-9 and the load output shaft are coaxially connected;
The load output shaft is connected with the main speed changing portion 2.
In the present embodiment, reverse driving gear 1-1 and load top grade driving gear 1-3 and the low-grade driving gear of load 1-4 is rotatably arranged on by bearing on load input shaft, and the first synchronizer 1-2 is coaxially fixed on load input shaft; Reverse gear driven gear 1-7 and wet clutch 1-9 are coaxially fixed on load output shaft, load high-grade driven gear 1-8 It is rotatablely connected with the low-grade driven gear 1-10 of load by bearing and load output shaft.
When the first synchronizer 1-2 is connected with reverse driving gear 1-1, it is synchronous that load input shaft imparts power to first Device 1-2, and then reverse driving gear 1-1 is passed to, rotation is passed to reverse gear driven gear 1-7 by reverse driving gear 1-1, into And load output shaft is driven to rotate, realize power output.
When the first synchronizer 1-2 is connected with load top grade driving gear 1-3, load input shaft imparts power to first Synchronizer 1-2, and then pass to the load top grade driving gear 1-3 or low-grade driving gear 1-4 of load;The high-grade driving gear of load 1-3 by rotation pass to load high-grade driven gear 1-8, load low grade driving gear 1-4 by rotation pass to load low grade from Moving gear 1-10, at this point, by the way that wet clutch 1-9 and load top grade driven gear 1-8 are attached or by wet type clutch Device 1-9 is attached with load low grade driven gear 1-10, and then realizes the conversion of high and low shift, and then is realized under loading condition, High and low shift conversion when not cutting off power.
That is, wet clutch 1-9 is respectively altogether there are three types of state:It is synchronous with the high-grade driven gear 1-8 of load to turn Driven gear 1-10 synchronous rotations dynamic, low-grade with load and the idle running in reverse gear.
The specific kind of drive is as follows:
Advance high-grade:Manipulate shift mechanism, make the first synchronizer 1-2 with load top grade driving gear 1-3 combined, wet type from Clutch 1-9 is combined with load top grade driven gear 1-8, and drive line at this time is:Load the synchronizer 1-2 of input shaft S1 → first The high-grade driving gear 1-3 → load top grade driven gear 1-8 → wet clutch 1-9 → load output shaft S2 → load of → load Often driven gear 1-5 → main speed changing portion 2 is often engaged in engagement driving gear 1-11 → load.
Advance low-grade:Manipulate shift mechanism, make the first synchronizer 1-2 with load low grade driving gear 1-4 combined, wet type from Clutch 1-9 is combined with load low grade driven gear 1-10, and drive line at this time is:Load the synchronizer 1- of input shaft S1 → first The low-grade driving gear 1-4 → load low grade driven gear 1-10 → wet clutch 1-9 → load output shaft S2 of 2 → load → negative It carries often engagement driving gear 1-11 → load and often engages driven gear 1-5 → main speed changing portion 2.
Reverse gear:Shift mechanism is manipulated, the first synchronizer 1-2 is made to be combined with reverse driving gear 1-1, drive line at this time For:Load input shaft S1 → lazy 23 → reverse gear of the human relations driven gear 1-7 → load output shaft S2 of reverse driving gear 1-1 → reverse gear → Often driven gear 1-5 → main speed changing portion 2 is often engaged in engagement driving gear 1-11 → load for load.
Preferred embodiment is to pass through reverse gear between the reverse driving gear 1-1 and the reverse gear driven gear 1-7 Idle pulley 1-6 is driven;
The reverse idler gear 1-6 is co-axially located on idler shaft, and respectively with the reverse driving gear 1-1 and it is described fall The 1-7 engagements of shelves driven gear.
By the setting of reverse idler gear 1-6, the rotation side of reverse driving gear 1-1 and reverse gear driven gear 1-7 can be made To identical, the i.e. reversion of realization load output shaft, and then realize reverse gear function.
Preferred embodiment is that load often engagement driving gear 1-11 is also coaxially arranged on the load output shaft;
The opposite side that driving gear 1-11 is arranged on the wet clutch 1-9 is often engaged in the load;
Often engagement driving gear 1-11 often engages driven gear 1-5 engagements with loading for the load;
Often engagement driven gear 1-5 is connected with the main speed changing portion 2 for the load.
Preferred embodiment is that gearbox further includes controller;
The controller is connected with the wet clutch 1-9, can control the connection shape of the wet clutch 1-9 State.
With the control of controller, it can realize that wet clutch 1-9 is connected respectively with load top grade driven gear 1-8, quilt The high-grade driven gear 1-8 of load, which drives, to be rotated, and is connected with load low grade driven gear 1-10, is supported low-grade driven gear 1-10 It drives and rotates and be not connected to and dally with load top grade driven gear 1-8 and load low grade driven gear 1-10.
Preferred embodiment is that the load top grade driving gear 1-3 and the low-grade driving gear 1-4 of the load are coaxial And it is wholely set.
Preferred embodiment is that the main speed changing portion 2 includes main transmission input shaft, main transformer speed output shaft, one grade of active Gear 2-1, first speed driven gear 2-6, two grades of driving gear 2-2, two grades of driven gear 2-8 and the second synchronizer 2-7;
One end of the main transmission input shaft is connected with the load speed changing portion 1;
One grade of driving gear 2-1 and two grades of driving gear 2-2 are co-axially located on the main transmission input shaft;
The first speed driven gear 2-6, two grades of driven gear 2-8 and the second synchronizer 2-7 are co-axially located at On the main transformer speed output shaft;
The first speed driven gear 2-6 and two grades of driven gear 2-8 are separately positioned on the second synchronizer 2-7's Both ends;
One grade of driving gear 2-1 is engaged with the first speed driven gear 2-6;
Two grades of driving gear 2-2 are engaged with two grades of driven gear 2-8.
It is driven that gearbox further includes third speed drive gear 2-3, third gear driven gear 2-9, fourth gear driving gear 2-5, fourth gear Gear 2-10 and the 3rd synchronizer 2-4;
The third speed drive gear 2-3, the fourth gear driving gear 2-5 and the 3rd synchronizer 2-4 are coaxially disposed On the main transmission input shaft;
The third speed drive gear 2-3 and the fourth gear driving gear 2-5 are separately positioned on the 3rd synchronizer 2-4's Both ends;
The third gear driven gear 2-9 and the fourth gear driven gear 2-10 are co-axially located at the main transformer speed output shaft On;
The third speed drive gear 2-3 is engaged with the third gear driven gear 2-9;
The fourth gear driving gear 2-5 is engaged with the fourth gear driven gear 2-10.
In the present embodiment, often engagement driving gear 1-11 is fixedly and coaxially connected with load output shaft for load, and load is often nibbled Driven gear 1-5, one grade of driving gear 2-1, two grades of driving gear 2-2 and the 3rd synchronizer 2-4 is closed to input with main transformer speed Axis is fixedly and coaxially connected;Third speed drive gear 2-3 and fourth gear driving gear 2-5 is rotated by bearing and main transmission input shaft to be connected It connects;Second synchronizer 2-7, third gear driven gear 2-9 and fourth gear driven gear 2-10 and main transformer speed output shaft are fixedly and coaxially connected, First speed driven gear 2-6 and two grades of driven gear 2-8 is rotatablely connected by bearing and main transformer speed output shaft.
As seen from Figure 1, after load speed changing portion 1 enters main speed-changing mechanism, the gear change in main speed changing portion 2 For:
One grade:Shift mechanism is manipulated, the second synchronizer 2-7 is made to be combined with first speed driven gear 2-6, drive path at this time For two.
Drive line 1 is:Load speed changing portion 1 → main transmission input shaft S3 → mono- grade driving gear 2-1 → mono- grade driven tooth Take turns the synchronizer 2-7 of 2-6 → second → main transformer speed output shaft S4 → pair speed changing portion 3;
Drive line 2 is:Load speed changing portion 1 → main transmission input shaft S3 → mono- grade driving gear 2-1 → mono- grade driven tooth Wheel 2-6 → second synchronizer 2-7 → main transformer speed output shaft S4 → pair speed change often engage driving gear 3-5 → pair speed change it is normal engage from Moving gear 3-1 → pair speed changing portion 3.
Two grades:Shift mechanism is manipulated, the second synchronizer 2-7 is made to be combined with two grades of driven gear 2-8, drive path at this time For two.
Drive line 1 is:It is driven to load speed changing portion 1 → main transmission input shaft S3 → bis- grade driving gear 2-211 → bis- grade The synchronizer 2-7 of gear 2-8 → second → main transformer speed output shaft S4 → pair speed changing portion 3;
Drive line 2 is:Load speed changing portion 1 → main transmission input shaft S3 → bis- grade driving gear 2-2 → bis- grade driven tooth Wheel 2-8 → second synchronizer 2-7 → main transformer speed output shaft S4 → pair speed change often engage driving gear 3-5 → pair speed change it is normal engage from Moving gear 3-1 → pair speed changing portion 3.
Third gear:Shift mechanism is manipulated, the 3rd synchronizer 2-4 is made to be combined with third speed drive gear 2-3, drive path at this time For two.
Drive path 1 is:Load the synchronizer 2-4 of speed changing portion 1 → main transmission input shaft S3 → the 3rd → third speed drive gear 2-3 → third gear driven gear 2-9 → main transformer speed output shaft S4 → pair speed changing portion 3;
Drive path 2 is:Load the synchronizer 2-4 of speed changing portion 1 → main transmission input shaft S3 → the 3rd → third speed drive gear 2-3 → third gear driven gear 2-9 → main transformer speed output shaft S4 → pair speed change often engage driving gear 3-5 → pair speed change often engagement from Moving gear 3-1 → pair speed changing portion 3.
Fourth gear:Shift mechanism is manipulated, the 3rd synchronizer 2-4 is made to be combined with fourth gear driving gear 2-5, drive path at this time For two.
Drive path 1 is:Load the synchronizer 2-4 of speed changing portion 1 → main transmission input shaft S3 → the 3rd → fourth gear driving gear 2-5 → fourth gear driven gear 2-10 → main transformer speed output shaft S4 → pair speed changing portion 3;
Drive path 2 is:Load the synchronizer 2-4 of speed changing portion 1 → main transmission input shaft S3 → the 3rd → fourth gear driving gear 2-5 → fourth gear driven gear 2-10 → main transformer speed output shaft S4 → pair speed change often engages driving gear 3-5 → pair speed change and often engages Driven gear 3-1 → pair speed changing portion 3.
Preferred embodiment is that it is low that the pair speed changing portion 3 includes secondary transmission input shaft, secondary speed change output shaft, secondary speed change Shelves driving gear 3-2, secondary speed change low grade driven gear 3-7, secondary speed change middle-grade driving gear 3-4, secondary speed change middle-grade driven gear 3-8, middle-grade engaging sleeve 3-3 and high and low shift engaging sleeve 3-6;
The pair speed change low grade driving gear 3-2, the pair speed change middle-grade driving gear 3-4 and middle-grade engaging sleeve 3- 3 are co-axially located on the secondary transmission input shaft;
The pair speed change low grade driving gear 3-2, the pair speed change middle-grade driving gear 3-4 are separately positioned on the middle-grade The both ends of engaging sleeve 3-3;
The high and low shift engaging sleeve 3-6, the secondary speed change low grade driven gear 3-7, the secondary speed change middle-grade driven gear 3-8 is co-axially located on the secondary speed change output shaft;
The pair speed change low grade driven gear 3-7, the pair speed change middle-grade driven gear 3-8 are arranged on the high and low shift and nibble The same end of trap 3-6;
The pair speed change low grade driving gear 3-2 is engaged with the pair speed change low grade driven gear 3-7;
The pair speed change middle-grade driving gear 3-4 is engaged with the pair speed change middle-grade driven gear 3-8.
Preferred embodiment is, the secondary speed change that gearbox further includes often engage driving gear 3-5 and the often engagement of secondary speed change from Moving gear 3-1;
The pair speed change often engages driving gear 3-5 and the output terminal of the main speed changing portion 2 is coaxially connected;
The pair speed change often engages driving gear 3-5 and often engages driven gear 3-1 engagements with the secondary speed change;
The pair speed change often engages driven gear 3-1 and is coaxially fixed on the secondary transmission input shaft;
The high and low shift engaging sleeve 3-6 often engages driving gear 3-5 coaxial arrangements with the secondary speed change.
In the present embodiment, secondary speed change often engages driving gear 3-5 and is coaxially fixed on main transformer speed output shaft;Pair becomes Fast often engagement driven gear 3-1, pair speed change low grade driving gear 3-2 and middle-grade engaging sleeve 3-3 are coaxially fixed at secondary change On fast input shaft;Secondary speed change middle-grade driving gear 3-4 is rotatably arranged on by bearing on secondary transmission input shaft;High and low shift engaging sleeve 3-6 and pair speed change middle-grade driven gear 3-8 are coaxially fixed on secondary speed change output shaft, secondary speed change low grade driven gear 3- 7 are rotatably arranged on by bearing on secondary speed change output shaft.
After main speed changing portion 2 enters secondary speed changing portion 3, the transforming gear in secondary speed changing portion 3 is:
It is low-grade:Shift mechanism is manipulated, high and low shift engaging sleeve 3-6 is made to be combined with pair speed change low grade driven gear 3-7, at this time Drive line is:Main speed changing portion 2 → pair transmission input shaft S5 → pair speed change low grade driving gear 3-2 → pair speed change low grade driven tooth Take turns 3-7 → high and low shift engaging sleeve 3-6 → pair speed change output shaft S6 → output.
Middle-grade:Shift mechanism is manipulated, middle-grade engaging sleeve 3-3 is made to be combined with pair speed change middle-grade driving gear 3-4, biography at this time Dynamic route is:Main speed changing portion 2 → pair transmission input shaft S5 → middle-grade engaging sleeve 3-3 → pair speed change middle-grade driving gear 3-4 → pair Speed change output shaft S6 → output.
It is high-grade:Shift mechanism is manipulated, high and low shift engaging sleeve 3-6 is made often to engage driving gear 3-5 with secondary speed change and is combined, at this time Drive path be:Main 2 → high and low shift of speed changing portion engaging sleeve 3-6 → pair speed change output shaft S6 → output.
The gearbox of the present invention is divided into load speed changing portion 1, main speed changing portion 2 and secondary speed changing portion it can be seen from the above 3。
Loading speed changing portion 1 includes shuttle-type gear shift section and load shift section, and wherein shuttle-type gear shift section can be realized and dragged The drive shift and reverse gear of machine drawing, load shift section realize high-grade, low-grade conversion of advancing, and main speed changing portion 2 is using same with second It walks two synchronizers of device 2-7 and the 3rd step device and carries out gear shift, be divided into four shelves, secondary speed changing portion 3 can realize high, medium and low three The conversion of gear, entire gearbox can realize the gear arrangement of 24 drive shifts and 12 reverse gears.Wherein shuttle-type gear shift section With main speed changing portion 2 using synchronizer shift, load shift section realizes gear shift by wet clutch 1-9 by oil pressure cntrol, Secondary speed changing portion 3 realizes high, medium and low switching using engaging sleeve.
In the present invention, as shown in Figure 1, entire transmission assembly shares seven transmission shafts, S1 is load input shaft, and S2 is Load output shaft, S3 are main transmission input shaft, and S4 is main speed change output shaft, and S5 is secondary transmission input shaft, and S6 is that secondary speed change exports Axis, S7 are lazy human relations axis.
In shuttle-type gear shift section, tooth hubs of the load input shaft S1 respectively with the first synchronizer 1-2 is coupled by spline, and first The both sides of synchronizer 1-2 combine gear ring wind and are not joined with reverse driving gear 1-1 and load top grade driving gear 1-3 by spline It connects, load top grade driving gear 1-3 is fixed together through roller bearing with load low grade driving gear 1-4 in load input shaft It is freely rotated on S1, idler shaft S7 is mounted on babinet, and reverse idler gear 1-6 can freely be turned by roller bearing on idler shaft S7 Dynamic, reverse gear driven gear 1-7 is coupled with load output shaft S2 by spline, and it is driven to load high-grade driven gear 1-8, load low grade Gear 1-10 is coupled with wet clutch 1-9 by spline, and wet clutch 1-9 is fixed on load output shaft S2, load Often engagement driving gear 1-11 is coupled with power commutation output shaft S2 by spline.
In main speed changing portion 2, load often engagement driven gear 1-5 and be fixed on main transmission input shaft S3, main transmission input shaft Tooth hubs of the S3 respectively with one grade of driving gear 2-1, two grades of driving gear 2-2, the 3rd synchronizer 2-4 is coupled by spline, and the 3rd The both sides of synchronizer 2-4 are coupled with reference to gear ring with third speed drive gear 2-3 and fourth gear driving gear 2-5 by spline respectively, main The tooth hub of the second synchronizer 2-7, third gear driven gear 2-9, fourth gear driven gear 2-10 pass through spline to speed change output shaft S4 respectively Connection, the both sides of the second synchronizer 2-7 pass through flower with first speed driven gear 2-6 and two grades of driven gear 2-8 respectively with reference to gear ring Key connecting, secondary speed change often engage driving gear 3-5 and are fixed on main transformer speed output shaft S4.
In secondary speed changing portion 3, secondary speed change often engages driven gear 3-1 and pair speed change low grade driving gear 3-2 and is fixed in secondary change On fast input shaft S5, middle-grade engaging sleeve 3-3 is coupled by spline with secondary transmission input shaft, and secondary speed change middle-grade driving gear 3-4 leads to It crosses roller bearing to be freely rotated on secondary transmission input shaft S5, high and low shift engaging sleeve 3-6, pair speed change middle-grade driven gear 3-8 lead to It crosses spline with pair speed change output shaft S6 to couple, secondary speed change low grade driven gear 3-7 can be freely rotated on high and low shift engaging sleeve 3-6.
The present invention also provides a kind of tractor, including gearbox described in any one of the above embodiments.
Gearbox and tractor provided by the invention are realized by wet clutch 1-9 in the state of load, are carried out high Low-grade variation, and then steady more range shift can be realized in the state of engine power is not cut off in operation interval, It manipulates simply, improves operating efficiency.
Finally it should be noted that:The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations;To the greatest extent Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that:Its according to Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into Row equivalent substitution;And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology The scope of scheme.

Claims (10)

1. a kind of gearbox, which is characterized in that including load speed changing portion, main speed changing portion and secondary speed changing portion;
The load speed changing portion, the main speed changing portion and the secondary speed changing portion are sequentially connected;
The load speed changing portion includes load input shaft, load output shaft, the high-grade driving gear of load, the high-grade driven tooth of load Wheel, the low-grade driving gear of load, the low-grade driven gear of load, reverse driving gear, reverse gear driven gear, the first synchronizer and wet Formula clutch;
The reverse driving gear, first synchronizer, the high-grade driving gear of the load and the low-grade driving tooth of the load Wheel is co-axially located on the load input shaft, and the high-grade driving gear of the load and the low-grade driving gear of the load are set It puts in the same side of first synchronizer, the reverse driving gear is arranged on the opposite side of first synchronizer;
The reverse gear driven gear, the high-grade driven gear of the load, the wet clutch and the low-grade driven tooth of the load Wheel is co-axially located on the load output shaft, and the reverse gear driven gear and the high-grade driven gear of the load are arranged on The same side of the wet clutch, the low-grade driven gear of load are arranged on the opposite side of the wet clutch;
The reverse driving gear and reverse gear driven gear engagement;
The high-grade driving gear of load and the high-grade driven gear engagement of the load;
The low-grade driving gear of load and the low-grade driven gear engagement of the load;
The wet clutch and the load output shaft are coaxially connected;
The load output shaft is connected with the main speed changing portion.
2. gearbox according to claim 1, which is characterized in that the reverse driving gear and the reverse gear driven gear Between be driven by reverse idler gear;
The reverse idler gear is co-axially located on idler shaft, and respectively with the reverse driving gear and the reverse gear driven gear Engagement.
3. gearbox according to claim 1, which is characterized in that it is normal that load is also coaxially arranged on the load output shaft Engage driving gear;
The opposite side that driving gear is arranged on the wet clutch is often engaged in the load;
Often engagement driving gear often engages driven gear engagement with loading for the load;
Often engagement driven gear is connected with the main speed changing portion for the load.
4. gearbox according to claim 1, which is characterized in that further include controller;
The controller is connected with the wet clutch, can control the connection status of the wet clutch.
5. gearbox according to claim 1, which is characterized in that the high-grade driving gear of load and the load are low-grade Driving gear is coaxial and is wholely set.
6. gearbox according to claim 1, which is characterized in that the main speed changing portion includes main transmission input shaft, main transformer Fast output shaft, one grade of driving gear, first speed driven gear, two grades of driving gears, two grades of driven gears and the second synchronizer;
One end of the main transmission input shaft is connected with the load speed changing portion;
One grade of driving gear and two grades of driving gears are co-axially located on the main transmission input shaft;
The first speed driven gear, two grades of driven gears and second synchronizer are co-axially located at the main transformer speed output On axis;
The first speed driven gear and two grades of driven gears are separately positioned on the both ends of second synchronizer;
One grade of driving gear is engaged with the first speed driven gear;
Two grades of driving gears are engaged with two grades of driven gears.
7. gearbox according to claim 6, which is characterized in that further include third speed drive gear, third gear driven gear, four Shelves driving gear, fourth gear driven gear and the 3rd synchronizer;
It is defeated that the third speed drive gear, the fourth gear driving gear and the 3rd synchronizer are co-axially located at the main transformer speed Enter on axis;
The third speed drive gear and the fourth gear driving gear are separately positioned on the both ends of the 3rd synchronizer;
The third gear driven gear and the fourth gear driven gear are co-axially located on the main transformer speed output shaft;
The third speed drive gear is engaged with the third gear driven gear;
The fourth gear driving gear is engaged with the fourth gear driven gear.
8. gearbox according to claim 1, which is characterized in that the pair speed changing portion includes secondary transmission input shaft, secondary change Fast output shaft, secondary speed change low grade driving gear, secondary speed change low grade driven gear, secondary speed change middle-grade driving gear, secondary speed change middle-grade Driven gear, middle-grade engaging sleeve and high and low shift engaging sleeve;
The pair speed change low grade driving gear, the secondary speed change middle-grade driving gear and the middle-grade engaging sleeve are co-axially located at On the pair transmission input shaft;
The pair speed change low grade driving gear, the secondary speed change middle-grade driving gear are separately positioned on the two of the middle-grade engaging sleeve End;
The high and low shift engaging sleeve, the secondary speed change low grade driven gear, the secondary speed change middle-grade driven gear are coaxially disposed On the secondary speed change output shaft;
The pair speed change low grade driven gear, the secondary speed change middle-grade driven gear are arranged on the same of the high and low shift engaging sleeve End;
The pair speed change low grade driving gear is engaged with the secondary speed change low grade driven gear;
The pair speed change middle-grade driving gear is engaged with the secondary speed change middle-grade driven gear.
9. gearbox according to claim 8, which is characterized in that further include secondary speed change and often engage driving gear and secondary speed change Often engagement driven gear;
The output terminal that the pair speed change often engages driving gear and the main speed changing portion is coaxially connected;
The pair speed change often engages driving gear and often engages driven gear engagement with the secondary speed change;
The pair speed change often engages driven gear and is coaxially fixed on the secondary transmission input shaft;
The high and low shift engaging sleeve often engages driving gear coaxial arrangement with the secondary speed change.
10. a kind of tractor, which is characterized in that including claim 1-9 any one of them gearboxes.
CN201810089275.5A 2018-01-30 2018-01-30 Gearbox and tractor Pending CN108087504A (en)

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CN109899461A (en) * 2019-03-28 2019-06-18 第一拖拉机股份有限公司 Middle low power is with drive commutation and with the driving device for tractor of step gear shifting
CN109899461B (en) * 2019-03-28 2024-01-26 第一拖拉机股份有限公司 Tractor transmission device with power reversing and synchronous gear shifting for medium and small power

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