CN206350309U - A kind of Light Crawler Tractor speed change gear - Google Patents
A kind of Light Crawler Tractor speed change gear Download PDFInfo
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- CN206350309U CN206350309U CN201621377665.5U CN201621377665U CN206350309U CN 206350309 U CN206350309 U CN 206350309U CN 201621377665 U CN201621377665 U CN 201621377665U CN 206350309 U CN206350309 U CN 206350309U
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Abstract
The utility model is related to a kind of Light Crawler Tractor speed change gear, engine is through the driving agricultural machinery and implement rotation of the first gear, agricultural machinery and implement are installed on agricultural machinery and implement power output shaft, engine is through the driving running wheel rotation of the second gear, running wheel is installed on walking power output shaft, there are second gear two hydraulic pressure stepless gearboxes HST, two hydraulic pressure stepless gearbox HST individually to control left and right running wheel to rotate.The utility model individually controls left and right running wheel to rotate by two HST, only need to be by being that pivot turn can be achieved to the control that left and right running wheel is turned to, radius of turn is greatly decreased, more easily operates, the adaptability in the small plot operation such as hills is effectively improved.
Description
Technical field
The utility model is related to a kind of Light Crawler Tractor speed change gear.
Background technology
Light Crawler Tractor is widely used in the agricultural machinery and implement such as harvester, and its gearbox designs is mostly to include main transformer speed
Mechanism and secondary gear, main speed-changing mechanism are separate unit hydraulic pressure stepless gearbox HST, and secondary gear is 3 shelves gear variable-speed motors
Structure.
It is entitled " a kind of caterpillar tractor stepless gearbox " with the maximally related prior art of the utility model
Patent (the patent No.：201420580069.1), its structure is that, with the first gear, the first gear carries for agricultural machinery and implement
For power, with the second gear, the second gear provides power for running gear, drives left and right driving wheel, wherein the
Two speed-changing mechanism is made up of main speed-changing mechanism and secondary gear, and main speed-changing mechanism is separate unit hydraulic pressure stepless gearbox HST, and pair becomes
Fast mechanism is 3 shelves gear gears, is turned to using clutch one side brake.Exist and be disadvantageous in that, secondary speed change third gear
Stroke of shifting gears is very big, and gearshift causes difficult not steerable；Clutch and brake formula one side brake turn to, it is more serious to track wear and turn
Curved radius is larger, and both sides brake strip can cause sideslip because adjustment is not in place or turn to the failure such as ineffective.
The content of the invention
Goal of the invention of the present utility model is to provide a kind of Light Crawler Tractor speed change gear and control method, turned
Curved radius is small, more easily operates.
Based on the design of same utility model, the utility model has two independent technical schemes：
A kind of Light Crawler Tractor speed change gear, engine rotates through the first gear driving agricultural machinery and implement, agricultural machinery
Tool is installed on agricultural machinery and implement power output shaft, and engine rotates through the second gear driving running wheel, running wheel
It is installed on walking power output shaft, it is characterised in that：Second gear has two hydraulic pressure stepless gearbox HST, two
Hydraulic pressure stepless gearbox HST individually controls left and right running wheel to rotate.
Preferably, the second gear has two secondary gears, two gear reductions, and each hydraulic pressure is electrodeless to be become
Fast case HST drives left running wheel or right running wheel to rotate through a secondary gear, a gear reduction.
Preferably, the gear reduction of the second gear has 2-4 grades of gear reductions, is correspondingly provided with 2-4
Accordingly it is equipped between reduction gearing, the reduction gearing of gear reductions at different levels and is meshed on individual deboost axle, deboost axle；Walking is driven
Driving wheel is installed on hoofing part line shaft, drive gear is housed on walking power output shaft, drive gear subtracts with final-stage gear
The reduction gearing engagement of fast mechanism.
Preferably, the secondary gear of the second gear is two grades of gears, is correspondingly provided with two groups of teeth wheel, first group
Gear is made up of the first secondary speed change driving gear, the first secondary change-speed gearing, and second group of gear is by the second secondary speed change driving gear, and the
Second mate's change-speed gearing is constituted, and the first secondary speed change driving gear, the second secondary speed change driving gear are installed on hydraulic pressure stepless gearbox HST
On power output shaft, the first secondary change-speed gearing, the second secondary change-speed gearing are installed on jackshaft.
Preferably, the secondary gear of the second gear is one grade of gear, one group of gear is correspondingly provided with, by first
Secondary speed change driving gear, the first secondary change-speed gearing composition, the first secondary speed change driving gear are installed on hydraulic pressure stepless gearbox HST and moved
On power output shaft, the first secondary change-speed gearing change-speed gearing is installed on jackshaft, the first secondary speed change driving gear, the first secondary speed change
Gear is often engaged.
Preferably, agricultural machinery and implement power output shaft end connects agricultural machinery and implement joint through flange.
Preferably, the first gear is two grades of gears, is correspondingly provided with two groups of teeth wheel, first group of gear is by the first master
Moving gear, first stud gear composition, second group of gear is by the second driving gear, second stud gear composition, the first driving tooth
Wheel, the second driving gear are installed on engine power output shaft, and first stud gear, second stud gear are installed on agricultural machinery and implement
On power output shaft.
The utility model also provides a kind of control method of above-mentioned Light Crawler Tractor speed change gear, based on two
Hydraulic pressure stepless gearbox HST to left and right running wheel to being individually controlled respectively, hydraulic pressure stepless gearbox HST outputs zero
Rotating speed, realizes that running wheel is braked.
Further, when that need to turn to, left and right running wheel is controlled respectively by two hydraulic pressure stepless gearbox HST
Reversion, realizes pivot stud.
Preferably, by adjusting hydraulic pressure stepless gearbox HST direction of the traffic and size, realize to left and right hoofing part
Take turns main story, reversion and the control of rotating speed speed.
The utility model has the advantage that：
Second gear of the utility model traveling control system has two hydraulic pressure stepless gearbox HST, two liquid
Pressure stepless gearbox HST (hereinafter referred to as HST) individually controls left and right running wheel to rotate.The utility model is changed
Traditional list HST structure, is individually controlled left and right running wheel to rotate, is arranged using double HST, each by two HST
HST realizes the unilateral driving wheel of independent control, can be realized to running wheel main story, instead by adjusting HST direction of the traffics and size
Turn and rotating speed speed control, only need to significantly be subtracted by being achievable pivot turn to the control that left and right running wheel is turned to
Few radius of turn, more easily operates, effectively improves the adaptability in the small plot operation such as hills.Meanwhile, the utility model by
In using double HST controls, existing one side brake device is eliminated, also reduces and causes crawler belt to ground because one side brake is turned to
Abrasion, reduce the damage to crop and plot, and avoid due to brake bush debug it is not in place cause it is whole
Machine sideslip, brake failure, without turn to etc. failure, reduce maintenance cost, improve the overall performance of gearbox.
Because the utility model is using double HST structures, output torque is increased, the secondary gear of the second gear is only
2 grades or 1 grade of gear are needed, 3 grades of traditional gears is changed, more easily operates.Correspondingly, second gear
Reducing gear is that, with 2 grades -4 grades gear reductions, when secondary gear is 1 grade of gear, reducing gear is 4 grades
Gear reduction, so as to be further ensured that walking power drive effect.The utility model agricultural machinery and implement power output shaft end is passed through
Flange connects agricultural machinery and implement joint, when agricultural machinery and implement power transmission shaft is damaged, and only need to dismantle flange is repaired, and is not required to whole gearbox
Open, more maintain easily.
Brief description of the drawings
Fig. 1 is the structural representation of the first gear of the utility model part；
Fig. 2 is the structural representation of the second gear of the utility model part.
Embodiment
Embodiment 1：
As shown in Figure 1 and Figure 2, engine 1 exports two groups of power through clutch 2 by engine power output shaft 3.First
Group power drives agricultural machinery and implement to rotate by the first gear, and agricultural machinery and implement are installed on agricultural machinery and implement power output shaft 4.First speed change
Mechanism is two grades of gears, is correspondingly provided with two groups of teeth wheel, first group of gear is by the first driving gear Z5, first stud gear Z1
Composition, second group of gear is made up of the second driving gear Z6, second stud gear Z2, the first driving gear Z5, the second driving tooth
Wheel Z6 is installed on engine power output shaft 3, and first stud gear Z1, that second stud gear Z2 is installed on agricultural machinery and implement power is defeated
On shaft 4.Be also equipped with being also equipped with gear Z7, Z8, agricultural machinery and implement power output shaft 4 on engine power output shaft 3 gear Z3,
Z4, gear Z3, Z7 are often engaged, and gear Z4, Z8 are often engaged.
Second group of power that engine power output shaft 3 is exported, drives road wheel to rotate by the second gear, walking
Driving wheel is installed on walking power output shaft 10, and the second gear has two hydraulic pressure stepless gearbox HST (hereinafter referred to as
HST) 6, two HST individually control left and right running wheel to rotate.Second gear have two secondary gears,
Two gear reductions, each hydraulic pressure stepless gearbox HST drives left through a secondary gear, a gear reduction
Running wheel or the rotation of right running wheel.A HST is given in Fig. 2 by secondary gear, a gear to subtract
The structure that fast mechanism is driven to a running wheel, another HST and another corresponding secondary gear, gear subtract
Fast mechanism is identical with this.HST power input is driven by bevel gear Z9, Z10 to be realized.Secondary gear is two grades of variable-speed motors
Structure, can be achieved two grades of speed governing, be correspondingly provided with two groups of teeth wheel, first group of gear is by the first secondary speed change driving gear Z11, the first secondary change
Fast gear Z13 compositions, second group of gear is by the second secondary speed change driving gear Z12, the second secondary change-speed gearing Z14 compositions, the first pair
Speed change driving gear Z11, the second pair speed change driving gear Z12 are installed on hydraulic pressure stepless gearbox HST power output shafts, and first
Secondary change-speed gearing Z13, the second pair change-speed gearing Z14 are installed on jackshaft 7, equipped with secondary gear shift gear 8 on jackshaft 7.
The gear reduction of second gear has 3 grades of gear reductions, is correspondingly provided with 3 deboost axles, deboost axle corresponding
Equipped with reduction gearing, it is meshed between the reduction gearing of gear reductions at different levels；Running wheel is installed on hoofing part and moved
On power axle 10, drive gear Z21 is housed on walking power output shaft 10, drive gear Z21 subtracts with final-stage gear reducing gear
Fast gear Z19 engagements.
During work, based on two hydraulic pressure stepless gearbox HST 6, left and right running wheel is individually controlled respectively,
By adjusting hydraulic pressure stepless gearbox HST 6 direction of the traffic and size, realize to left and right running wheel main story, reversion and
The control of rotating speed speed.The output zero-turn speed of hydraulic pressure stepless gearbox HST 6, realizes that running wheel is braked.When that need to turn to, lead to
Cross two hydraulic pressure stepless gearbox HST 6 controls left and right running wheel to invert respectively, realizes pivot stud.
Embodiment 2：
The secondary gear of second gear is one grade of gear, is correspondingly provided with one group of gear, by the first secondary speed change
Driving gear, the first secondary change-speed gearing composition, the first secondary speed change driving gear are installed on HST 6 power output shaft, and first
Secondary change-speed gearing is installed on jackshaft 7, and the first secondary speed change driving gear, the first secondary change-speed gearing are often engaged.Correspondingly, second
The gear reduction of gear is 4 grades of gear reductions, i.e., compared with Example 1, set up 1 grade of gear reduction.
Remaining structure and working principle be the same as Example 1 of embodiment 2.
Embodiment 3：
The secondary gear of second gear is two grades of gears, and the gear reduction of the second gear is 2
Level reducing gear.Remaining structure and working principle be the same as Example 1 of embodiment 3.
Embodiment 4：
The end of agricultural machinery and implement power output shaft 4 connects agricultural machinery and implement joint 5 through flange, when agricultural machinery and implement power transmission shaft is damaged, and only needs
Dismounting flange is repaired, and is not required to open whole gearbox, is more maintained easily.Remaining structure of embodiment 4 and work are former
Manage be the same as Example 1, embodiment 2 or embodiment 3.
Claims (7)
1. a kind of Light Crawler Tractor speed change gear, engine rotates through the first gear driving agricultural machinery and implement, agricultural machinery and implement
It is installed on agricultural machinery and implement power output shaft, engine rotates through the second gear driving running wheel, running wheel peace
Loaded on walking power output shaft, it is characterised in that：Second gear has two hydraulic pressure stepless gearbox HST, two liquid
Pressure stepless gearbox HST individually controls left and right running wheel to rotate.
2. Light Crawler Tractor speed change gear according to claim 1, it is characterised in that：Second gear has two
Individual secondary gear, two gear reductions, each hydraulic pressure stepless gearbox HST is through secondary gear, a gear
Reducing gear drives left running wheel or the rotation of right running wheel.
3. Light Crawler Tractor speed change gear according to claim 2, it is characterised in that：The gear of second gear
Reducing gear has 2 grades-4 grades gear reductions, is correspondingly provided with 2-4 deboost axles, deboost axle and reducing gear is accordingly housed
It is meshed between wheel, the reduction gearing of gear reductions at different levels；Running wheel is installed on hoofing part line shaft, walking
Drive gear is housed, drive gear is engaged with the reduction gearing of final-stage gear reducing gear on power output shaft.
4. Light Crawler Tractor speed change gear according to claim 3, it is characterised in that：The secondary change of second gear
Fast mechanism is two grades of gears, is correspondingly provided with two groups of teeth wheel, first group of gear is by the first secondary speed change driving gear, the first secondary change
Fast gear composition, second group of gear is by the second secondary speed change driving gear, the second secondary change-speed gearing composition, the first secondary speed change driving tooth
Wheel, the second secondary speed change driving gear are installed on hydraulic pressure stepless gearbox HST power output shafts, the first secondary change-speed gearing, second
Secondary change-speed gearing is installed on jackshaft.
5. Light Crawler Tractor speed change gear according to claim 3, it is characterised in that：The secondary change of second gear
Fast mechanism is one grade of gear, is correspondingly provided with one group of gear, by the first secondary speed change driving gear, the first secondary change-speed gearing group
Into the first secondary speed change driving gear is installed on hydraulic pressure stepless gearbox HST power output shafts, the first secondary change-speed gearing gear teeth
Wheel is installed on jackshaft, and the first secondary speed change driving gear, the first secondary change-speed gearing are often engaged.
6. the Light Crawler Tractor speed change gear according to claim 1-5 any one, it is characterised in that：Agricultural machinery
Tool power output shaft end connects agricultural machinery and implement joint through flange.
7. the Light Crawler Tractor speed change gear according to claim 1-5 any one, it is characterised in that：First
Gear is two grades of gears, is correspondingly provided with two groups of teeth wheel, first group of gear is by the first driving gear, first stud gear
Composition, second group of gear is by the second driving gear, second stud gear composition, the first driving gear, the installation of the second driving gear
In on engine power output shaft, first stud gear, second stud gear are installed on agricultural machinery and implement power output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377665.5U CN206350309U (en) | 2016-12-15 | 2016-12-15 | A kind of Light Crawler Tractor speed change gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377665.5U CN206350309U (en) | 2016-12-15 | 2016-12-15 | A kind of Light Crawler Tractor speed change gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206350309U true CN206350309U (en) | 2017-07-25 |
Family
ID=59347478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621377665.5U Active CN206350309U (en) | 2016-12-15 | 2016-12-15 | A kind of Light Crawler Tractor speed change gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206350309U (en) |
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2016
- 2016-12-15 CN CN201621377665.5U patent/CN206350309U/en active Active
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