CN108194604A - Tracked vehicle gearbox and caterpillar band harvester - Google Patents
Tracked vehicle gearbox and caterpillar band harvester Download PDFInfo
- Publication number
- CN108194604A CN108194604A CN201810179334.8A CN201810179334A CN108194604A CN 108194604 A CN108194604 A CN 108194604A CN 201810179334 A CN201810179334 A CN 201810179334A CN 108194604 A CN108194604 A CN 108194604A
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- sequentially connected
- gear
- transmission mechanism
- differential assembly
- tracked vehicle
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- 230000007246 mechanism Effects 0.000 claims abstract description 173
- 230000005540 biological transmission Effects 0.000 claims abstract description 101
- 230000008859 change Effects 0.000 claims description 9
- 230000008450 motivation Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 description 8
- 238000010008 shearing Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
- F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D69/00—Driving mechanisms or parts thereof for harvesters or mowers
- A01D69/06—Gearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Retarders (AREA)
Abstract
The present invention provides a kind of tracked vehicle gearbox and caterpillar band harvester, it is related to technical field of agricultural machinery, including input shaft, the first output shaft, the second output shaft, the first transmission mechanism being sequentially connected successively, driven by craspedodrome mechanism and box of tricks, the second transmission mechanism being sequentially connected successively, steering driving mechanism, third transmission mechanism and switching mechanism, the 4th transmission mechanism；Input shaft is sequentially connected respectively with the first transmission mechanism and the second transmission mechanism；Box of tricks includes the first differential assembly and the second differential assembly；First differential assembly and the second differential assembly are sequentially connected respectively with the first output shaft and the second output shaft；Steering driving mechanism is sequentially connected by the 4th transmission mechanism and the second differential assembly, so that the driving wheel of box of tricks driving both sides crawler belt turns on the contrary.The present invention realizes when endless-track vehicle turns to and drives both sides crawler belt simultaneously, can give full play to the maximum driving force of both sides crawler belt, and steering power is big, and trafficability is high.
Description
Technical field
The present invention relates to technical field of agricultural machinery, more particularly, to a kind of tracked vehicle gearbox and caterpillar band harvester.
Background technology
At present, the gearbox of domestic crawler type corn mowing machine is generally using single power transmission, and steering mode is using unilateral
Crawler belt power cut or one side brake realize that large radius turns to or one side brake turns to.
Gearbox is driven using single power flow, and gearbox generally sets the secondary speed change of third gear machinery, realizes vehicle point not same district
The variable speed of section, gearbox jackshaft both sides setting steering cluth, by controlling the combination of dental inlay and steering cluth knot
It closes, realizes the dynamic Control to both sides drive sprocket and braking.Prior art is using single power flow passing power, speed change
One side drive wheel is braked when case turns to, side drive wheel sprocket wheel, and driving force is small.
Invention content
The purpose of the present invention is to provide a kind of tracked vehicle gearbox and caterpillar band harvesters, can effectively avoid harvester
Remaining interior parts, and can realize and drive both sides crawler belt simultaneously when endless-track vehicle turns to, both sides crawler belt can be given full play to most
Large driving force, steering power is big, and trafficability is high；Improve the steering circle control range and control accuracy of endless-track vehicle；And
Crawler belt is small to the shearing work of soil in steering procedure, is not likely to produce mud, small to the destruction on ground.
To achieve the above object, the present invention provides following technical scheme：
In a first aspect, the present invention provides a kind of tracked vehicle gearbox, including：Input shaft, the first transmission mechanism, second pass
Motivation structure, driven by craspedodrome mechanism, steering driving mechanism, gear, box of tricks, the first output shaft, the second output shaft, third
Transmission mechanism, the 4th transmission mechanism and switching mechanism；
The driven by craspedodrome mechanism is sequentially connected by first transmission mechanism and the input shaft, and the straight trip is driven
Motivation structure is sequentially connected by the gear and the box of tricks；
The box of tricks includes the first differential assembly and the second differential assembly；First output shaft with it is described first poor
Fast component is sequentially connected, and second output shaft is sequentially connected with second differential assembly, and first output shaft and institute
It states the second output shaft to be sequentially connected with the driving wheel of both sides crawler belt respectively, for driving the movement of endless-track vehicle both sides crawler belt；
The steering driving mechanism is sequentially connected by second transmission mechanism and the input shaft, and described turn to is driven
Motivation structure is sequentially connected respectively with the third transmission mechanism and the 4th transmission mechanism；And the third transmission mechanism passes through
The switching mechanism is sequentially connected with first differential assembly, and the 4th transmission mechanism is driven with second differential assembly
Connection, so that the driving wheel of box of tricks driving both sides crawler belt turns on the contrary.
Further, the driven by craspedodrome mechanism includes the first hydraulic pump and the first hydraulic motor；First hydraulic pump
It is sequentially connected with the transmission mechanism, for adjusting the rotating speed of first hydraulic motor；The output of first hydraulic motor
Axis is sequentially connected with the gear.
Further, the gear include variable-speed shaft and be successively set on the variable-speed shaft low-speed gear,
Selector fork and high gear, the selector fork are used to adjust the position of the low-speed gear and the high gear so that institute
It states low-speed gear or the high gear and the output shaft of first hydraulic motor is sequentially connected.
Further, the gear further includes the first brake axle, first brake axle and the low-speed gear and
The high gear is sequentially connected by gear pair, and first brake axle is sequentially connected with the box of tricks；Described
One brake axle is equipped with the first brake for stopping brake.
Further, the box of tricks further includes sun wheel shaft, the central gear being installed in the sun wheel shaft；Institute
It states the first differential assembly and second differential assembly is symmetricly set on the both sides of the central gear, the box of tricks passes through
The central gear is sequentially connected with first brake axle.
Further, first differential assembly and/or second differential assembly include and the sun wheel shaft gear teeth
Multiple planetary gears of engagement, the gear ring and planet carrier engaged with the planetary gear, multiple planetary gears are distributed on the row
In carrier；The ring gear against rotation is installed on the planet carrier；
First output shaft is sequentially connected with the planet carrier in first differential assembly；
Second output shaft is sequentially connected with the planet carrier in second differential assembly.
Further, the steering driving mechanism includes the second hydraulic pump and the second hydraulic motor；Second hydraulic pump
It is sequentially connected with the transmission mechanism, for adjusting the rotating speed of second hydraulic motor.
Further, the tracked vehicle gearbox further includes the second brake axle；
Second brake axle is equipped with the second brake for braking in a turn；
What second brake axle and the steering driving mechanism were sequentially connected, and second brake axle respectively with it is described
Third transmission mechanism and the 4th transmission mechanism are sequentially connected.
Further, the tracked vehicle gearbox further includes the 5th transmission mechanism；Second brake axle passes through described
5th transmission mechanism is sequentially connected respectively with the third transmission mechanism and the 4th transmission mechanism.
Second aspect, the present invention also provides a kind of caterpillar band harvester, the driving wheel including engine and both sides crawler belt also wraps
Include the tracked vehicle gearbox described in any one of first aspect, the engine and the input in the tracked vehicle gearbox
Axis is sequentially connected；The driving wheel of both sides crawler belt is defeated with the first output shaft in the tracked vehicle gearbox and second respectively
Shaft is sequentially connected.
Tracked vehicle gearbox and caterpillar band harvester provided by the invention have the advantages that：
First aspect present invention provides a kind of tracked vehicle gearbox, including：Input shaft, the first transmission mechanism, second pass
Motivation structure, driven by craspedodrome mechanism, steering driving mechanism, gear, box of tricks, the first output shaft, the second output shaft, third
Transmission mechanism, the 4th transmission mechanism and switching mechanism；Driven by craspedodrome mechanism is sequentially connected by the first transmission mechanism and input shaft,
And driven by craspedodrome mechanism is sequentially connected by gear and box of tricks；Box of tricks is poor including the first differential assembly and second
Fast component；First output shaft and the first differential assembly are sequentially connected, and the second output shaft and the second differential assembly are sequentially connected, and the
One output shaft and the second output shaft are sequentially connected respectively with the driving wheel of both sides crawler belt, for driving endless-track vehicle both sides crawler belt
It is mobile；Steering driving mechanism is sequentially connected by the second transmission mechanism and input shaft, and steering driving mechanism passes respectively with third
Motivation structure and the 4th transmission mechanism are sequentially connected；And third transmission mechanism is connected by switching mechanism and the transmission of the first differential assembly
It connects, the 4th transmission mechanism and the second differential assembly are sequentially connected, so that the driving wheel of box of tricks driving both sides crawler belt turns to phase
Instead.
Tracked vehicle gearbox provided by the invention, it is compact-sized, applied to harvester, effectively adapt to the peace in harvester
Space is filled, the position of other parts is avoided to limit.Power is distributed to the first transmission mechanism and second and passed by transmission input shaft
Motivation structure, the first driving mechanism independently drive driven by craspedodrome mechanism, and the second transmission mechanism independently drives steering driving mechanism.Straight trip
Gearbox input speed is switched to high speed and two gears of low speed by driving mechanism with gear.Gear transmits power
To box of tricks, power is transferred to the first differential assembly and the second differential assembly respectively, and power is transferred to by the first differential assembly
Power is transferred to the second output shaft by the first output shaft, the second differential assembly, and therefore, driven by craspedodrome mechanism is dynamic after speed change
The first output shaft and the second output shaft that power passes through the box of tricks driving left and right sides.Power is transferred to by steering driving mechanism
Three transmission mechanisms and the 4th transmission mechanism, third transmission mechanism are sequentially connected by switching mechanism and the first differential assembly, and the 4th
Transmission mechanism is connect with the second differential assembly direct-drive.The power of steering driving mechanism is consistent, square by switching mechanism speed
It is exported to box of tricks, the first differential assembly and the second differential assembly is transferred on the contrary with different steerings, and power is defeated
Go out to the first output shaft of both sides and the second output shaft, so as to retreat left and right sides crawler belt side advance side, realize and turn to.This
The tracked vehicle gearbox provided is provided, can effectively avoid remaining parts in harvester and realizes that endless-track vehicle turns
To when drive both sides crawler belt simultaneously, the maximum driving force of both sides crawler belt can be given full play to, steering power is big, and trafficability is high；
Improve the steering circle control range and control accuracy of endless-track vehicle；And crawler belt is small to the shearing work of soil in steering procedure,
Mud is not likely to produce, it is small to the destruction on ground.
The caterpillar band harvester that second aspect of the present invention provides is provided with the endless-track vehicle speed change of first aspect present invention offer
Case, all advantageous effects possessed by the tracked vehicle gearbox so as to be provided with first aspect present invention.
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 being described 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 schematic diagram one of tracked vehicle gearbox provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram two of tracked vehicle gearbox provided in an embodiment of the present invention；
Fig. 3 is sectional view along A-A in Fig. 1；
Fig. 4 is the enlarged drawing at C in Fig. 3；
Fig. 5 is B-B direction sectional view in Fig. 1；
Fig. 6 is the transmission schematic diagram of tracked vehicle gearbox provided in an embodiment of the present invention；
Fig. 7 is planet carrier output speed ω in box of tricks both sides provided in an embodiment of the present inventionplanetCarrierAbout steering
The curve graph of HST discharge capacities；
Fig. 8 is endless-track vehicle turning radius provided in an embodiment of the present invention about the curve graph for turning to HST discharge capacities.
Icon：1- input shafts；The first transmission mechanisms of 2-；The second transmission mechanisms of 3-；4- driven by craspedodrome mechanism；5- turns to driving
Mechanism；The first output shafts of 6-；The second output shafts of 7-；8- third transmission mechanisms；The 4th transmission mechanisms of 9-；10- switching mechanisms；11-
Variable-speed shaft；12- low-speed gears；13- high gears；14- selector forks；15- shift sleeves；The first brake axles of 16-；17-
One brake；18- sun wheel shafts；19- central gears；The first differential assemblies of 20-；The second differential assemblies of 21-；22- second is braked
Axis；23- second brakes；The 5th transmission mechanisms of 24-.
Specific embodiment
Technical scheme of the present invention 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, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that 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 ",
" third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that 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, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The specific embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1-Fig. 8 is please referred to, below in conjunction with attached drawing to tracked vehicle gearbox provided in an embodiment of the present invention and crawler belt
Harvester elaborates.
The embodiment of first aspect present invention provides a kind of tracked vehicle gearbox, including：Input shaft 1, first is driven
Mechanism 2, the second transmission mechanism 3, driven by craspedodrome mechanism 4, steering driving mechanism 5, box of tricks, the output of the first output shaft 6, second
Axis 7, third transmission mechanism 8, the 4th transmission mechanism 9 and switching mechanism 10；Driven by craspedodrome mechanism 4 by the first transmission mechanism 2 with
Input shaft 1 is sequentially connected, and driven by craspedodrome mechanism 4 is sequentially connected with box of tricks；Box of tricks includes the first differential assembly 20
With the second differential assembly 21；First output shaft 6 is sequentially connected with the first differential assembly 20, the second output shaft 7 and the second differential group
Part 21 is sequentially connected, and the first output shaft 6 and the second output shaft 7 are sequentially connected respectively with the driving wheel of both sides crawler belt, for driving
The movement of dynamic endless-track vehicle both sides crawler belt；Steering driving mechanism 5 is sequentially connected by the second transmission mechanism 3 with input shaft 1, and is turned
It is sequentially connected respectively with 8 and the 4th transmission mechanism 9 of third transmission mechanism to driving mechanism 5；And third transmission mechanism 8 passes through overturning
Mechanism 10 is sequentially connected with the first differential assembly 20, and the 4th transmission mechanism 9 is sequentially connected with the second differential assembly 21, so that differential
The driving wheel of mechanism driving both sides crawler belt turns to opposite.
The tracked vehicle gearbox that the embodiment of the present invention provides, it is compact-sized, applied to harvester, effectively adapt to harvesting
Installation space in machine avoids the position of other parts from limiting.Power is distributed to the first transmission mechanism by transmission input shaft 1
2 and second transmission mechanism 3, the first driving mechanism independently drive driven by craspedodrome mechanism 4, the independent driving of the second transmission mechanism 3 turns to
Driving mechanism 5.Gearbox input speed is switched to high speed and two gears of low speed by driven by craspedodrome mechanism 4 with gear.Become
Fast mechanism imparts power to box of tricks, and power is transferred to the first differential assembly 20 and the second differential assembly 21 respectively, and first
Power is transferred to the first output shaft 6 by differential assembly 20, and power is transferred to the second output shaft 7 by the second differential assembly 21, therefore,
Power of the driven by craspedodrome mechanism 4 after speed change passes through the first output shaft 6 of the box of tricks driving left and right sides and the second output
Axis 7.Power is transferred to 8 and the 4th transmission mechanism 9 of third transmission mechanism by steering driving mechanism 5, and third transmission mechanism 8 is by turning over
Rotation mechanism 10 is sequentially connected with the first differential assembly 20, and the 4th transmission mechanism 9 is connect with 21 direct-drive of the second differential assembly.Turn
To driving mechanism 5 power by 10 speed of switching mechanism it is consistent, be transferred to box of tricks, the first differential assembly in the opposite direction
20 and second differential assembly 21 exported with different steering, and output power to both sides the first output shaft 6 and the second output shaft
7, so as to retreat left and right sides crawler belt side advance side, realize and turn to.The endless-track vehicle that the embodiment of the present invention provides becomes
Fast case can effectively avoid remaining parts in harvester and drive both sides crawler belt simultaneously when realizing endless-track vehicle steering,
The maximum driving force of both sides crawler belt can be given full play to, steering power is big, and trafficability is high；Improve the steering circle control of endless-track vehicle
Range and control accuracy processed；And crawler belt is small to the shearing work of soil in steering procedure, is not likely to produce mud, ground is broken
It is bad small.
In the optional scheme of the present embodiment, further, driven by craspedodrome mechanism 4 includes the first hydraulic pump and the first hydraulic pressure
Motor；First hydraulic pump is sequentially connected with transmission mechanism, for adjusting the rotating speed of the first hydraulic motor；First hydraulic motor it is defeated
Shaft is sequentially connected with gear.
In at least one embodiment, gearbox is driven by engine power by belt pulley.The input of gearbox
Power is distributed to the first transmission mechanism 2, the first hydraulic pressure of the independent driving straight trip of the first transmission mechanism 2 by axis 1 by gear mechanism
Pump, the first hydraulic pump are specifically as follows hydraulic continuously variable transmission, first the first hydraulic motor of hydraulic pump drive, and by adjusting the
The discharge capacity of one hydraulic pump realizes the stepless changing of motor speed output.The output shaft of first hydraulic motor passes through tooth with gear
Wheel engaged transmission.
In at least one embodiment, driven by craspedodrome mechanism 4 can also be electrical motor driven.
In the optional scheme of the present embodiment, further, tracked vehicle gearbox further includes gear, gear
Including the variable-speed shaft 11 and low-speed gear being successively set on variable-speed shaft 11 12, selector fork 14 and high gear 13, gearshift
Shift fork 14 is used to adjust the position of low-speed gear 12 and high gear 13 so that low-speed gear 12 or high gear 13 and first
The output shaft of hydraulic motor is sequentially connected.
In at least one embodiment, the first hydraulic motor output shaft drives variable-speed shaft 11, variable-speed shaft by gear structure
Have on 11 and realize the low-speed gear 12 of gearbox shifting and high gear 13, shift sleeve 15 is manipulated using selector fork 14
Gearbox input speed is switched to low speed and at a high speed two gears.
In the optional scheme of the present embodiment, further, gear further includes the first brake axle 16, the first brake axle
16 are sequentially connected with low-speed gear 12 and high gear 13 by gear pair, and the first brake axle 16 connects with box of tricks transmission
It connects；First brake axle 16 is equipped with the first brake 17 for stopping brake.From low-speed gear 12 and high gear 13
Power passes to the first brake axle 16 by gear mechanism, and the first brake axle 16 is equipped with the first brake for stopping brake
17.In at least one embodiment, the first brake 17 is multi-sheet wet-type brake.
In the optional scheme of the present embodiment, further, box of tricks further includes sun wheel shaft 18, is installed on sun gear
Central gear 19 on axis 18；First differential assembly 20 and the second differential assembly 21 are symmetricly set on the both sides of central gear 19,
Box of tricks is sequentially connected by central gear 19 and the first brake axle 16.The power of first brake axle 16 passes through central gear 19
Sun wheel shaft 18 is imparted power to, symmetrical first differential assembly, 20 and second differential group is configured in the driving of sun wheel shaft 18
Part 21.
In the optional scheme of the present embodiment, further, the first differential assembly 20 and/or the second differential assembly 21 include
With multiple planetary gears of 18 gear teeth meshing of sun wheel shaft, the gear ring and planet carrier that are engaged with planetary gear, multiple planetary gears are evenly distributed with
On planet carrier；Ring gear against rotation is installed on planet carrier；Planet carrier transmission in first output shaft 6 and the first differential assembly 20 connects
It connects；Planet carrier in second output shaft 7 and the second differential assembly 21 is sequentially connected.
In at least one embodiment, the first differential assembly 20 is identical with 21 structure of the second differential assembly.Left and right first is poor
Fast 20 and second differential assembly 21 of component respectively includes nibbling with multiple planetary gears of 18 gear teeth meshing of sun wheel shaft, with planetary gear
Planet carrier on the same circumference is uniformly configured in multiple planetary gears by the gear ring of conjunction.Gear ring is rotatably secured on planet carrier.Row
Carrier is engaged by spline and the end driving gear of left and right, end driving gear with end driven gear.Therefore, the first hydraulic pressure
Power of the motor after speed change is by the first differential assembly 20 of the left and right sides and the second differential assembly 21 to both-side ends quilt
Moving gear is transmitted with equidirectional same rotating speed, drives the first output shaft 6 and the second output shaft 7 of the left and right sides.
In the optional scheme of the present embodiment, further, steering driving mechanism 5 includes the second hydraulic pump and the second hydraulic pressure
Motor；Second hydraulic pump is sequentially connected with transmission mechanism, for adjusting the rotating speed of the second hydraulic motor.
In at least one embodiment, gearbox is driven by engine power by belt pulley.The input of gearbox
Power is distributed to the second transmission mechanism 3, the second hydraulic pressure that the independent driving of the second transmission mechanism 3 turns to by axis 1 by gear mechanism
Pump, the second hydraulic pump are specifically as follows hydraulic continuously variable transmission, second the second hydraulic motor of hydraulic pump drive, and by adjusting the
The discharge capacity of two hydraulic pumps realizes the stepless changing of motor speed output.
In at least one embodiment, steering driving mechanism 5 can also be electrical motor driven.
In the optional scheme of the present embodiment, further, tracked vehicle gearbox further includes the second brake axle 22；Second
Brake axle 22 is equipped with the second brake 23 for braking in a turn；What the second brake axle 22 was sequentially connected with steering driving mechanism 5,
And second brake axle 22 be sequentially connected respectively with 8 and the 4th transmission mechanism 9 of third transmission mechanism.Second brake axle 22 and the second horse
The output axis connection reached, the power from steering driving mechanism 5 pass to the second brake axle 22, and the second brake axle 22 is equipped with and is used for
The second brake 23 of braking in a turn.In at least one embodiment, second brake 23 is multi-sheet wet-type brake.
In the optional scheme of the present embodiment, further, tracked vehicle gearbox further includes the 5th transmission mechanism 24；The
Two brake axles 22 are sequentially connected by the 5th transmission mechanism 24 with 8 and the 4th transmission mechanism 9 of third transmission mechanism respectively.
In at least one embodiment, the 5th transmission mechanism 24 is intermediate gear mechanism, and switching mechanism 10 is turning gear.
The power of second hydraulic motor output shaft passes through the 5th transmission mechanism 24, third transmission mechanism 8, the 4th transmission mechanism 9 and overturning
10 speed of mechanism is consistent, is transferred to the gear ring of the first differential assembly 20 and the second differential assembly 21 in the opposite direction.
First differential assembly 20 is with the second differential assembly 21 since sun gear input speed is identical, and gear ring input speed is not
Together, left and right planet carrier exports at different rates, and passes through end gear mechanism and output power to two side drive wheels, so as to make
Left and right sides crawler belt generates speed difference, realizes that both sides crawler belt is turned to the radius of turning circle set.
19 rotational speed omega of central gear in box of trickssun, planet carrier rotational speed omegaplanetCarrierWith gear ring rotational speed omegaRing's
Movement relation can be represented with formula 1：
Wherein, k be planetary mechanism characteristic parameter, k=-ZRing/ZSun；
ZRing：The gear ring number of teeth；
ZSun：The sun gear number of teeth.
In steering procedure, in the case where engine output speed is constant, by vehicle control mechanism, increases and turn to second
Hydraulic pump, that is, driving mechanism (turning to HST, HydroStaticTransmission, the abbreviation of hydrostatic transmission) variable pump
While discharge capacity, the first hydraulic pump, that is, driven by craspedodrome mechanism (straight trip HST) variable pumpage is reduced, the second hydraulic motor is made to turn
It is improved to hydraulic motor output speed, the i.e. straight trip hydraulic motor output speed of the first hydraulic motor reduces, two skidding of box of tricks
Carrier output speed ωplanetCarrierIt can be calculated by formula 1, as shown in Figure 7.
Two side drive wheel output speed ωOutputIt can be by ωplanetCarrierPass through box of tricks to output shaft gear gearratio
It calculates.
According to the dynamic radius r of driving wheel, the travel speed V of left and right sides crawler beltL、VRIt can respectively be calculated by formula 2：
V=ωOutput× r formulas 2
Since left and right track gage B is given value, Vehicular turn radius R can be calculated according to formula 3：
In steering procedure, according to both sides crawler belt travel speed VL、VRVariation, Vehicular turn radius R variations are as shown in Figure 8.
As can be seen that gradually increasing with HST discharge capacities are turned to from Fig. 7 and Fig. 8, straight trip HST discharge capacities are gradually reduced, vehicle
Turning radius is gradually reduced, the final pivot stud for realizing that turning radius is 0, whole process turning radius step-less adjustment.
In at least one embodiment, the second brake 23 being connected with the second hydraulic motor uses and suppresses compression type multi-disc
Wet brake, when vehicle is kept straight on, friction plate is braked left and right gear ring, by spring compression so as to ensure to carry out in left and right
Vehicle can reliably keep straight on during band operating mode difference, and during steering, the second hydraulic motor output torque overcomes second brake 23
Pressing force of the spring detaches brake strip, so as to which speed is consistent, drives left and right gear ring in the opposite direction, realizes and turns to.
The form of control stick can also be used in steering wheel operating in said program.
The tracked vehicle gearbox that the embodiment of first aspect present invention provides is applied to caterpillar band harvester, improves crawler belt
Formula harvester driving force and the passability in wet field, steering power in steering procedure is big；Improve the steering circle of caterpillar band harvester
Control range and control accuracy turn including no-radius, it can be achieved that the step-less adjustment of harvester radius of turning circle, improve steering
Flexibility and the working efficiency of farm work, crawler belt is small to the shearing work of soil in steering procedure, mud is not likely to produce, to field
The destruction on ground is small；Solves the differential locking of both sides crawler belt and the safety of parking braking when caterpillar band harvester such as rice machine is kept straight on
Problem；Gear box shift structure is simple, and using wheel steering, handling maneuver is comfortable, and steering range is big, and control is accurate；It solves
The endurance issues that transfer gear box turns to improve the service life of gearbox.
The embodiment of second aspect of the present invention provides a kind of caterpillar band harvester, the driving including engine and both sides crawler belt
Wheel further includes the tracked vehicle gearbox in the embodiment of first aspect, engine and the input shaft 1 in tracked vehicle gearbox
It is sequentially connected；The driving wheel of both sides crawler belt is driven respectively with the first output shaft 6 in tracked vehicle gearbox and the second output shaft 7
Connection.
The embodiment that the caterpillar band harvester that the embodiment of second aspect of the present invention provides is provided with first aspect present invention carries
The tracked vehicle gearbox of confession, so as to possessed by the tracked vehicle gearbox of the embodiment offer with first aspect present invention
All advantageous effects.
The tracked vehicle gearbox and caterpillar band harvester of the present invention are illustrated above, still, the present invention does not limit
In above-mentioned specific embodiment, without departing from the scope of the claims, various deformations or change can be carried out.This
Invent the various modifications being included within the scope of the claims and change.
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 invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：It is still
It can modify to the technical solution recorded in foregoing embodiments and either which part or all technical features are carried out
Equivalent replacement；And it these modifications or replaces, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (10)
1. a kind of tracked vehicle gearbox, which is characterized in that including：Input shaft (1), the first transmission mechanism (2), the second driver
Structure (3), driven by craspedodrome mechanism (4), steering driving mechanism (5), box of tricks, the first output shaft (6), the second output shaft (7),
Three transmission mechanisms (8), the 4th transmission mechanism (9) and switching mechanism (10)；
The driven by craspedodrome mechanism (4) is sequentially connected by first transmission mechanism (2) and the input shaft (1), and described
Driven by craspedodrome mechanism (4) is sequentially connected with the box of tricks；
The box of tricks includes the first differential assembly (20) and the second differential assembly (21)；First output shaft (6) and institute
The first differential assembly (20) drive connection is stated, second output shaft (7) is sequentially connected with second differential assembly (21), and
First output shaft (6) and second output shaft (7) are sequentially connected respectively with the driving wheel of both sides crawler belt, are carried out for driving
Movement with vehicle both sides crawler belt；
The steering driving mechanism (5) is sequentially connected by second transmission mechanism (3) and the input shaft (1), and described
Steering driving mechanism (5) is sequentially connected respectively with the third transmission mechanism (8) and the 4th transmission mechanism (9)；It is and described
Third transmission mechanism (8) is sequentially connected by the switching mechanism (10) and first differential assembly (20), and the described 4th passes
Motivation structure (9) is sequentially connected with second differential assembly (21), so that the driving wheel of box of tricks driving both sides crawler belt
It turns to opposite.
2. tracked vehicle gearbox according to claim 1, which is characterized in that the driven by craspedodrome mechanism (4) includes
One hydraulic pump and the first hydraulic motor；First hydraulic pump is sequentially connected with the transmission mechanism, for adjusting described first
The rotating speed of hydraulic motor；The output shaft of first hydraulic motor is sequentially connected with the gear.
3. tracked vehicle gearbox according to claim 2, which is characterized in that the tracked vehicle gearbox further includes change
Fast mechanism, the driven by craspedodrome mechanism (4) are sequentially connected by the gear and the box of tricks；
The gear includes variable-speed shaft (11) and the low-speed gear (12) being successively set on the variable-speed shaft (11), changes
Keep off shift fork (14) and high gear (13), the selector fork (14) is for adjusting the low-speed gear (12) and the high speed tooth
The position of (13) is taken turns so that the output of the low-speed gear (12) or the high gear (13) and first hydraulic motor
Axis is sequentially connected.
4. tracked vehicle gearbox according to claim 3, which is characterized in that the gear further includes the first braking
Axis (16), first brake axle (16) are connected with the low-speed gear (12) and the high gear (13) by gear auxiliary driving
It connects, and first brake axle (16) is sequentially connected with the box of tricks；First brake axle (16) is equipped with to stop
The first brake (17) of vehicle braking.
5. tracked vehicle gearbox according to claim 4, which is characterized in that the box of tricks further includes sun wheel shaft
(18), the central gear (19) being installed in the sun wheel shaft (18)；First differential assembly (20) and described second poor
Fast component (21) is symmetricly set on the both sides of the central gear (19), the box of tricks by the central gear (19) with
First brake axle (16) is sequentially connected.
6. tracked vehicle gearbox according to claim 5, which is characterized in that first differential assembly (20) and/or
Second differential assembly (21) including with the sun wheel shaft (18) gear teeth meshing multiple planetary gears, nibble with the planetary gear
The gear ring and planet carrier of conjunction, multiple planetary gears are distributed on the planet carrier；The ring gear against rotation is installed on the row
Carrier；
First output shaft (6) is sequentially connected with the planet carrier in first differential assembly (20)；
Second output shaft (7) is sequentially connected with the planet carrier in second differential assembly (21).
7. tracked vehicle gearbox according to claim 1, which is characterized in that the steering driving mechanism (5) includes
Two hydraulic pumps and the second hydraulic motor；Second hydraulic pump is sequentially connected with the transmission mechanism, for adjusting described second
The rotating speed of hydraulic motor.
8. tracked vehicle gearbox according to claim 7, which is characterized in that the tracked vehicle gearbox further includes
Two brake axles (22)；
Second brake axle (22) is equipped with the second brake (23) for braking in a turn；
Second brake axle (22) is sequentially connected with the steering driving mechanism (5), and second brake axle (22) point
It is not sequentially connected with the third transmission mechanism (8) and the 4th transmission mechanism (9).
9. tracked vehicle gearbox according to claim 8, which is characterized in that the tracked vehicle gearbox further includes
Five transmission mechanisms (24)；Second brake axle (22) by the 5th transmission mechanism (24) respectively with the third driver
Structure (8) and the 4th transmission mechanism (9) are sequentially connected.
10. a kind of caterpillar band harvester, the driving wheel including engine and both sides crawler belt, which is characterized in that further include claim 1
To the tracked vehicle gearbox described in any one of 9, the engine is passed with the input shaft (1) in the tracked vehicle gearbox
Dynamic connection；The driving wheel of both sides crawler belt is defeated with the first output shaft (6) in the tracked vehicle gearbox and second respectively
Shaft (7) is sequentially connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179334.8A CN108194604B (en) | 2018-03-05 | 2018-03-05 | Gear box of tracked vehicle and tracked harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179334.8A CN108194604B (en) | 2018-03-05 | 2018-03-05 | Gear box of tracked vehicle and tracked harvester |
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| Publication Number | Publication Date |
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| CN108194604A true CN108194604A (en) | 2018-06-22 |
| CN108194604B CN108194604B (en) | 2024-02-20 |
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ID=62595016
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810179334.8A Active CN108194604B (en) | 2018-03-05 | 2018-03-05 | Gear box of tracked vehicle and tracked harvester |
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| Country | Link |
|---|---|
| CN (1) | CN108194604B (en) |
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| CN109058411A (en) * | 2018-09-06 | 2018-12-21 | 湖南农业大学 | A kind of endless-track vehicle speed changer of positive and negative rotation |
| CN109058413A (en) * | 2018-09-06 | 2018-12-21 | 张祝 | A kind of endless-track vehicle shifting control method |
| CN113915309A (en) * | 2021-12-15 | 2022-01-11 | 易如(山东)智能科技有限公司 | Mechanical automatic stepless gearbox capable of realizing left-right forward and reverse rotation |
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| CN113915309A (en) * | 2021-12-15 | 2022-01-11 | 易如(山东)智能科技有限公司 | Mechanical automatic stepless gearbox capable of realizing left-right forward and reverse rotation |
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| Publication number | Publication date |
|---|---|
| CN108194604B (en) | 2024-02-20 |
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