CN108843787A - A kind of variable speed drive for tracked carrier - Google Patents
A kind of variable speed drive for tracked carrier Download PDFInfo
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- CN108843787A CN108843787A CN201811036283.XA CN201811036283A CN108843787A CN 108843787 A CN108843787 A CN 108843787A CN 201811036283 A CN201811036283 A CN 201811036283A CN 108843787 A CN108843787 A CN 108843787A
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- gear
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- way
- driven
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/4043—Control of a bypass valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Abstract
A kind of variable speed drive for tracked carrier, wherein, gear component, power split path transmission component are connect with hydraulic system, power split path transmission component is connect with power output component, gear component, power split path transmission component and power output component are mounted in box assembly, hydraulic system forms hydrostatic variable transmission circuit using fixed displacement motor and two-way variable displacement pump, to realize turning radius consecutive variations, improves and turns to accuracy；And reversal valve is set between fixed displacement motor and two-way variable displacement pump, after change is reversed gear, hydraulic system automatically switches hydraulic circuit, to realize the identical steering characteristic with retrogressing that advances；The electromagnet in hydrostatic variable speed circuit capable of reversing is linked with No.1 shift fork axle simultaneously, to reduce operation difficulty, reduces safety accident.
Description
Technical field
The present invention relates to gear technical field more particularly to a kind of variable speed drives for tracked carrier.
Background technique
Using the endless-track vehicle speed changer of double-current (double power flow) input power, generalling use two sets of planetary gear mechanisms makes
Converge after the power of gear input is in parallel with the power that steering mechanism inputs, the power of gear input is by planetary gear
The gear ring or sun gear of mechanism input, and the power of steering mechanism's input is inputted by the sun gear or gear ring of planetary gear mechanism, converge
Power after conjunction is exported by planet carrier.Using in split path transmission scheme, is inputted, turned using variable speed if turning to input power
To revolving speed proportion relation flexible, that turning radius can be inputted with consecutive variations, steering angular velocity and steering mechanism, turn to
Precisely, superior performance；In the split path transmission scheme using planetary gear mechanism, (steering wheel turns to drawing for steering operation mechanism
Bar) steering operation direction it is constant (such as：For turning to the steering operation mechanism of disc type, steering wheel is when moving forward and backward
It is biased to left or right side), for operating steering mechanism to the left, when advance, operate steering mechanism to the left, after power confluence,
Left track slows down, and right side track accelerates, and endless-track vehicle turns to the left, when retrogressing, steering mechanism is equally operated to the left, due to falling
Che Shi, speed change input power is reversed, and it is unchanged to turn to input power direction, although endless-track vehicle travels backward, due to turning machine
The deflection direction of structure is unchanged, therefore causes the changing rule of left track and right side track unchanged, i.e.,：Left track is opposite to advance
Direction is slowed down, and right side track accelerates (i.e. with respect to direction of advance：Left track accelerates reversing, and right side track, which slows down, moves backward), crawler belt
Vehicle reverse travel to the right, due to when steering mechanism deflects to the left, when advance turns to the left to be turned to the right when then moving back,
Lead to operating difficulties, or even safety accident occurs；The travel speed of especially transportation type endless-track vehicle is very fast, be engaged in field or
When non-rice habitats transport, road conditions are poor, are easy to that reverse travel safety accident occurs using the vehicle of such confluence scheme.
Summary of the invention
Technical problem solved by the invention is to provide a kind of variable speed drive for tracked carrier, to solve
Disadvantage in above-mentioned background technique.
Technical problem solved by the invention is realized using following technical scheme：
A kind of variable speed drive for tracked carrier, including it is gear component, power split path transmission component, dynamic
Power output precision, box assembly and hydraulic system, wherein gear component, power split path transmission component and hydraulic system connect
It connects, and power split path transmission component is connect with power output component, gear component, power split path transmission component and power are defeated
Component is mounted in box assembly out, and specific structure is as follows：
In gear component, the gear lever for controlling shift is mounted on cabinet, gear lever bottom end and No.1 shift fork
Axis, No. two shift fork axle switching connections, for controlling No.1 shift fork axle, No. two shift fork axles realize gearing movement, in No. two shift fork axles
Two or three gear shift forks are provided with, are provided with No.1 shift fork in No.1 shift fork axle；
One axis is mounted on cabinet, three gear driving gears, two gear driving gear, a gear driving gear and the driving gear that reverses gear
Successively empty set is on an axis, while No. two splined hubs and No.1 splined hub are equipped on an axis, is provided in No. two splined hubs
For No. two combined covers in conjunction with No. two shift forks, it is provided in No.1 splined hub in conjunction with the No.1 in conjunction with No.1 shift fork
Set, No. two combined cover exterior circumferentials are provided with the allocating slot for the insertion of No. two shift forks, and the setting of No.1 combined cover exterior circumferential is useful
In the allocating slot of No.1 shift fork insertion, under the manipulation of gear lever, No. two shift fork axles drive No. two combined covers to do by No. two shift forks
It slides axially, No.1 shift fork axle drives No.1 splined hub to slide axially by No.1 shift fork；
No. two adjacent sides of splined hub are provided with external splines hub in three gear driving gears, in two gear driving gear and two
Number adjacent side of splined hub is provided with external splines hub, is provided with outside in the gear driving gear side adjacent with No.1 splined hub
Splined hub, reversing gear, the driving gear side adjacent with No.1 splined hub is provided with external splines hub, completes tooth by external splines hub
The cooperation of wheel and combined cover, combined cover and splined hub is driven；
Two axis are mounted on cabinet, and the three gear driven gears and two often engaged with three gear driving gears are provided on two axis
Second gear driven gear that gear driving gear often engages, with a gear driving gear often engages one keeps off driven gear and driven tooth of reversing gear
Wheel；
Reverse gear shaft one end is mounted on cabinet, and the other end is provided with for same with the driven gear that reverses gear, the driving gear that reverses gear
When the reverse idler gear that engages；
In power split path transmission component, gear ring frame is mounted in steering shaft, is provided with input gear, gear ring on the outside of gear ring frame
Left gear ring and right gear ring are provided on the inside of frame, left sun gear and right sun gear are separately mounted in steering shaft, multiple left lateral star teeth
Wheel is evenly arranged on around left sun gear by left lateral gear rack, and left lateral gear rack one end is mounted on cabinet, other end empty set
In connecting shaft, left driving gear is mounted on left lateral gear rack, and multiple right planetary gears are uniformly distributed by right lateral gear rack
Around right sun gear, right lateral gear rack is mounted on cabinet, and right driving gear is mounted on right lateral gear rack；Steering shaft
It is mounted on cabinet, one end of the connecting shaft is mounted on cabinet, and other end empty set is equipped with and is turned in steering shaft in steering shaft
The steering driven gear of driving gear engagement, is equipped with driven wheel of differential in connecting shaft, planetary gear is sleeved on planetary gear shaft
On, planetary gear shaft is fixed on differential steering end cap, and planetary gear side and driven wheel of differential engaged transmission, planetary gear
The other side and drive bevel gear engaged transmission；Drive bevel gear and driven wheel of differential are made up of planetary gear shaft, planetary gear
Constant speed reverse drive mechanism, diversion driving-gear are mounted on fixed displacement motor；
In power output component, left driving driven gear is connected on left driving shaft, left driving driven gear and left driving
Gear often engages, and left driving shaft one end is mounted on cabinet, and the other end is mounted on left Driving terminal；Right driving driven gear connects
It connects on right driving axle, right driving driven gear is often engaged with right driving gear, and right driving axle one end is mounted on cabinet, another
End is mounted on right Driving terminal；
Box assembly includes cabinet, the differential steering end cap for installing planetary gear shaft, left Driving terminal and right driving
End cap, left Driving terminal and right Driving terminal are mounted on cabinet；
In hydraulic system, it is provided with hydrostatic variable speed circuit, feed circuit and hydrostatic nothing capable of reversing capable of reversing
Grade gear circuit, feed circuit repairing in hydrostatic variable transmission loop works, in an inactive state by liquid
Pressure oil off-load, and the electromagnet in hydrostatic variable speed circuit capable of reversing interacts connection with No.1 shift fork axle, to reduce operation
Difficulty.
In the present invention, it is mounted on cabinet in the middle part of gear lever by support base.
In the present invention, No. two splined hubs are located on the axis between three gear driving gears and two gear driving gear.
In the present invention, No.1 splined hub is located on the axis between a gear driving gear and the driving gear that reverses gear.
In the present invention, left lateral star gear quantity is any one number in 2,3,4.
In the present invention, right lateral star gear quantity is any one number in 2,3,4.
In the present invention, hydrostatic variable speed circuit capable of reversing by electromagnet, two-way variable displacement pump, check valve, overflow valve,
Two four-way electromagnetic reversing valves and fixed displacement motor composition.
In the present invention, electromagnet is mounted on two four-way electromagnetic reversing valves.
In the present invention, feed circuit is made of fuel tank, filter, slippage pump, oil pipe, overflow valve.
In the present invention, hydrostatic variable transmission circuit is made of two-way variable displacement pump and fixed displacement motor, feed circuit
The repairing in hydrostatic variable transmission loop works, in an inactive state by overflow valve by hydraulic oil off-load to fuel tank.
In the present invention, power transmission route：
One gear：No.1 shift fork axle moves to left, and No.1 shift fork drives No.1 combined cover to move to left, and power is by an axis through No.1 splined hub
It is transferred to No.1 combined cover, then is transferred to a gear driven gear through a gear driving gear, from a gear driven gear output；
Second gear：No. two shift fork axles move to right, and two or three gear shift forks drive two or three gear combined covers to move to right, and power is by an axis through two third gear
Splined hub is transferred to two or three gear combined covers, then is transferred to second gear driven gear through two gear driving gear, is passed by second gear driven gear
Two axis are handed to, from a gear driven gear output；
Three gears：No. two shift fork axles move to left, and two or three gear shift forks drive two or three gear combined covers to move to left, and power is by an axis through two third gear
Splined hub is transferred to two or three gear combined covers, then is transferred to three gear driven gears through three gear driving gears, is passed by three gear driven gears
Two axis are handed to, from a gear driven gear output；
It reverses gear：No.1 shift fork axle moves to right, and No.1 shift fork drives No.1 combined cover to move to right, and power is by an axis through No.1 splined hub
It is transferred to No.1 combined cover, then the driving gear that reversed gear is transmitted to reverse idler gear, is transferred to and is reversed gear by reverse idler gear
Driven gear, the driven gear that reverses gear are transmitted to two axis, from a gear driven gear output；
Power double fluid imports
One gear driven gear is often engaged with input gear, drives to left tooth through input gear by the driving dynamics of gear
Circle and right gear ring；
It is inputted by the steering power that hydraulic system inputs by fixed displacement motor, fixed displacement motor drives diversion driving-gear and turns to
Driven gear engagement, and then steering shaft is driven, steering shaft drives left sun gear and right sun gear；
Driving dynamics are inputted by left gear ring and right gear ring, and steering power is inputted by left sun gear and right sun gear, dual-flow
Power is exported after converging by the left lateral gear rack and right lateral gear rack of planetary gear mechanism；
Straight-line travelling
Power is through gear to input gear, and then power divides two-way, drives to left gear ring all the way, and another way drives to
Right gear ring, in straight-line travelling, the swash plate of two-way variable displacement pump is placed in center zero, due in hydrostatic variable transmission circuit
Without running of hydraulic power oil, fixed displacement motor does not rotate, and since fixed displacement motor does not rotate, the whole gears being mounted in steering shaft do not revolve
Turn, the power of left gear ring is by left lateral star-wheel, left lateral gear rack, left driving driving gear, left driving driven gear to left driving
Axis, and then drive left track；The power of right gear ring is by right lateral star-wheel, right lateral gear rack, right driving driving gear, right driving
Driven gear and right driving axle, and then drive right side track；Since the left sun is identical as the revolving speed of right sun gear, contrary,
Therefore act on right sun gear that the power size in steering shaft is identical, contrary, and steering shaft is self-locking, will not by left sun gear
Cause driving dynamics from on-axis output is turned to fixed displacement motor, agricultural tracked carrier straight-line travelling；
Advance Turning travel
Gear is placed in forward gear, and the swash plate of two-way variable displacement pump is placed in non-center zero, when electromagnet is not powered on：
Variable-speed dynamic is through gear to input gear, and then power divides two-way, drives to left gear ring all the way, and another way passes
It moves to right gear ring, since the swash plate of two-way variable displacement pump is placed in non-center zero, fixed displacement motor rotates under hydraulic action, and then drives
The dynamic whole gears rotation being mounted in steering shaft, since left sun gear is identical as the revolving speed of right sun gear, contrary, power
Make revolving speed one of left lateral gear rack and right lateral gear rack to increase and another reduction after double fluid converges, finally promotes
Revolving speed one for being transferred to left driving shaft and right driving axle increases and another reduction, so that left track goes out with right side track
Existing rotational speed difference, to realize steering；The direction of steering and the swash plate deflection direction of two-way variable displacement pump are at certain relationship, the angle of steering
The swash plate deflection angle proportion relation of speed and two-way variable displacement pump；
Turning backward traveling
Gear is placed in when reversing gear, and the swash plate of two-way variable displacement pump is placed in non-center zero, when electromagnet is powered, reversing
The power of traveling is through gear to input gear, and then power divides two-way, drives to left gear ring all the way, and another way drives to the right side
Gear ring, since the swash plate of two-way variable displacement pump is placed in non-center zero, electromagnet is powered, and two four-way electromagnetic reversing valves make two-way
Hydraulic circuit commutation between variable pump and fixed displacement motor, therefore after power converges in planetary gear mechanism, agricultural crawler belt transport
The steering rule of vehicle reversing is identical as the steering rule advanced, to realize that turning backward travels.
Beneficial effect：
1) present invention forms hydrostatic variable transmission circuit using fixed displacement motor and two-way variable displacement pump, to realize crawler belt
Transport vehicle turning radius consecutive variations improve and turn to accuracy；
2) driving dynamics import under the conditions of coaxial with steering power in the present invention, compact-sized, to simplify manufacturing process；
3) reversal valve is arranged in the present invention between fixed displacement motor and two-way variable displacement pump, and after change is reversed gear, hydraulic system is certainly
Dynamic switching hydraulic circuit, to realize advance and retreat identical steering characteristic；
4) present invention is by the electromagnet and No.1 shift fork axis connection in hydrostatic variable speed circuit capable of reversing, to reduce behaviour
Make difficulty, reduces safety accident；
5) steering power is inputted by the sun gear of planetary gear mechanism in the present invention, and steering input power reduction ratio is big, is passed
Motivation structure is simpler, the lightweight of effective realization device.
Detailed description of the invention
Fig. 1 is the structure connection diagram of presently preferred embodiments of the present invention.
Fig. 2 is the gear modular construction connection schematic diagram in presently preferred embodiments of the present invention.
Fig. 3 is the power split path transmission modular construction connection schematic diagram in presently preferred embodiments of the present invention.
Fig. 4 is the power output modular construction connection schematic diagram in presently preferred embodiments of the present invention.
Fig. 5 is the hydraulic system structure connection schematic diagram in presently preferred embodiments of the present invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to a kind of variable speed drive for tracked carrier of FIG. 1 to FIG. 5, including gear component A, power
Split path transmission component B, power output component C, box assembly D and hydraulic system E, gear component A, power split path transmission group
Part B is connect with hydraulic system E, and power split path transmission component B is connect with power output component C, gear component A, power
Split path transmission component B and power output component C are mounted in box assembly D, and specific structure is as follows：
Gear component A includes gear lever A11, support base A12, No.1 shift fork axle A13, No. two shift fork axle A14, two or three
Keep off shift fork A15, No.1 shift fork A16, an axis A21, three gear driving gear A22, two or three gear combined cover A23, two gear driving gear
A24, No. two splined hub A25, gear a driving gear A26, No.1 combined cover A27, the driving gear A28 that reverses gear, No.1 splined hub
A29, two axis A31, three gear driven gear A32, second gear driven gear A33, one gear driven gear A34, the driven gear A35 that reverses gear,
Reverse gear shaft A41 and reverse idler gear A42；Wherein, for controlling shift, middle part is pacified by support base A12 for the one end gear lever A11
On cabinet D1, the other end is connect with No.1 shift fork axle A13, No. two shift fork axle A14, for controlling No.1 shift fork axle A13, two
Number shift fork axle A14 realizes gearing movement, is provided on two or three gear shift fork A15, No.1 shift fork axle A13 and sets on No. two shift fork axle A14
It is equipped with No.1 shift fork A16；
One both ends axis A21 are mounted on cabinet D1 by bearings D 2, three gear driving gear A22, two gear driving gear A24,
Successively empty set is on an axis A21 and four gears are relative to an axis A21 by the one gear driving gear A26 and driving gear A28 that reverses gear
By axial limiting, No. two flowers are installed on the axis A21 being located between three gear driving gear A22 and two gear driving gear A24
Key hub A25, an axis A21 and No. two affixed transmissions of splined hub A25 are being located at a gear driving gear A26 and driving gear A28 that reverses gear
Between an axis A21 on the affixed transmission of No.1 splined hub A29, an axis A21 and No.1 splined hub A29, No. two splined hubs are installed
It is provided on A25 for No. two combined cover A23 in conjunction with No. two shift fork A15, and No. two splined hub A25 and No. two combined covers
A23 is driven by inside and outside spline fitted, and No. two combined cover A23 exterior circumferentials are provided with allocating slot, and No. two shift fork A15 are inserted into No. two knots
The allocating slot of trap A23 is to limit the axial position of No. two combined cover A23, under the manipulation of gear lever A11, No. two shift fork axle A14
It drives No. two combined cover A23 to slide axially by No. two shift fork A15, is provided on No.1 splined hub A29 for being dialled with No.1
No.1 the combined cover A27, No.1 splined hub A29 and No.1 combined cover A27 that fork A16 is combined are driven by inside and outside spline fitted, and one
Number combined cover A27 exterior circumferential is provided with allocating slot, and the allocating slot that No.1 shift fork A16 is inserted into No.1 combined cover A27 is limited with No.1 knot
The axial position of trap A27, under the manipulation of gear lever A11, No.1 shift fork axle A13 drives No.1 flower by No.1 shift fork A16
Key hub A27 slides axially；
The side adjacent with No. two splined hub A25 three gear driving gear A22 is provided with external splines hub, No. two shift fork A15 are dialled
When dynamic No. two combined cover A23 do close axial movement to three gear driving gear A22, set by the three gear sides driving gear A22
External splines hub and the internal spline of No. two combined cover A23 cooperate and be driven, at the same time, the internal spline and two of No. two combined cover A23
The power of number splined hub A25 cooperation transmission, an axis A21 is transferred to three gears actively through No. two combined cover A23 by No. two splined hub A25
Gear A 22；
The side adjacent with No. two splined hub A25 two gear driving gear A24 is provided with external splines hub, No. two shift fork A15 are dialled
When dynamic No. two combined cover A23 do close axial movement to two gear driving gear A24, set by the side two gear driving gear A24
External splines hub and the internal spline of No. two combined cover A23 cooperate and be driven, at the same time, the internal spline and two of No. two combined cover A23
The power of number splined hub A25 cooperation transmission, an axis A21 is transferred to second gear actively through No. two combined cover A23 by No. two splined hub A25
Gear A 24；
The side adjacent with No.1 splined hub A29 a gear driving gear A26 is provided with external splines hub, No.1 shift fork A16 is dialled
When dynamic No.1 combined cover A27 does close axial movement to a gear driving gear A26, set by a gear side driving gear A26
External splines hub and No.1 combined cover A27 internal spline cooperate be driven, at the same time, the internal spline and one of No.1 combined cover A27
The power of number splined hub A29 cooperation transmission, an axis A21 is transferred to a gear actively through No.1 combined cover A27 by No.1 splined hub A29
Gear A 26；
The side adjacent with No.1 splined hub A29 the driving gear A28 that reverses gear is provided with external splines hub, No.1 shift fork A16 is dialled
When dynamic No.1 combined cover A27 does close axial movement to the driving gear A28 that reverses gear, reverse gear set by the side driving gear A28
External splines hub and No.1 combined cover A27 internal spline cooperate be driven, at the same time, the internal spline and one of No.1 combined cover A27
Number splined hub A29 cooperation transmission, the power of an axis A21, which is transferred to by No.1 splined hub A29 through No.1 combined cover A27, to reverse gear actively
Gear A 28；
Two both ends axis A31 are mounted on cabinet D1 by bearings D 2, are disposed with and three gears on two axis A31 by spline
Three gear driven gear A32 that driving gear A22 is often engaged, the second gear driven gear A33 often engaged with two gear driving gear A24,
With the gear driving gear A26 gear driven gear A34 often engaged and the driven tooth of reversing gear often engaged with reverse idler gear A42
A35 is taken turns, and three gear driven gear A32, second gear driven gear A33, a gear driven gear A34 are opposite with the driven gear A35 that reverses gear
The axial position of two axis A31 is defined, and the power relative to two axis A31 transmits, three gear driven gear A32, second gear driven gear
The A33 and driven gear A35 that reverses gear is power input gear, and a gear driven gear A34 is both power input gear and power
Output gear；
The one end reverse gear shaft A41 is mounted on cabinet D1 by bearings D 2, the other end be provided with for the driven gear that reverses gear
A35, reverse gear driving gear A28 and meanwhile engagement reverse idler gear A42；
Power split path transmission component B includes left driving assembly B1, right driving assembly B2 and power split path transmission component B3, a left side
Driving assembly B1 includes gear ring frame B11, input gear B12, left lateral star gear B 13, left lateral gear rack B14, left driving gear
B15, left sun gear B16 and left gear ring B17, right driving assembly B2 include gear ring frame B11, input gear B12, right planetary gear
B23, right lateral gear rack B24, right driving gear B25, right sun gear B26 and right gear ring B27, power split path transmission component B3 packet
Include planetary gear B31, drive bevel gear B32, driven wheel of differential B33, planetary gear shaft B34, connecting shaft B35, steering shaft B36,
Driven gear B37 and diversion driving-gear B38 is turned to, gear ring frame B11 is mounted on steering shaft B36 by bearings D 2, bearings D 2
The axial freedom of gear ring frame B11 is limited, input gear B12 is provided on the outside of gear ring frame B11, is provided on the inside of gear ring frame B11
Left gear ring B17 and right gear ring B27, left sun gear B16 are mounted on steering shaft B36 by spline fitted, and left lateral star gear B 13 is logical
It crosses left lateral gear rack B14 to be evenly arranged on around left sun gear B16,13 quantity of left lateral star gear B is that n is (any in n 2,3,4
One), left lateral one end gear rack B14 is mounted on cabinet D1 by bearings D 2, and the other end is being connected by 2 empty set of bearings D
On axis B35, left driving gear B15 is mounted on left lateral gear rack B14 by spline fitted；Right sun gear B26 passes through spline
It being fitted on steering shaft B36, right lateral star gear B 23 is evenly arranged on around right sun gear B26 by right lateral gear rack B24,
23 quantity of right lateral star gear B is n (in n 2,3,4 any one), and right lateral gear rack B24 passes through bearings D 2 and is mounted on case
On body D1, right driving gear B25 is mounted on right lateral gear rack B24 by spline；
The both ends steering shaft B36 are mounted on cabinet D1 by bearings D 2, and the one end connecting shaft B35 is mounted on case by bearings D 2
On body D1, other end empty set is equipped with by spline on steering shaft B36 and is engaged with diversion driving-gear B38 on steering shaft B36
Steering driven gear B37, connecting shaft B35 on driven wheel of differential B33 is equipped with by spline fitted, planetary gear B31 suit
On planetary gear shaft B34, planetary gear shaft B34 is fixed on differential steering end cap D3, and the side planetary gear B31 with it is driven
Bevel gear B33 engaged transmission, the other side planetary gear B31 and drive bevel gear B32 engaged transmission；Drive bevel gear B32 with from
Dynamic bevel gear B33 forms constant speed reverse drive mechanism, diversion driving-gear B38 by planetary gear shaft B34, planetary gear B31
It is mounted on fixed displacement motor E11；Bearings D 2 limits the axial freedom of steering shaft B36, connecting shaft B35；
Power output component C includes left driving assembly C1 and right driving assembly C2, and left driving assembly C1 is driven by left driving
Gear C 11 and left driving shaft C12 are formed, and right driving assembly C2 is made of right driving driven gear C21 and right driving axle C22, left
Driving driven gear C11 is connected on left driving shaft C12 by spline, and left driving driven gear C11 and left driving gear B15 are normal
Engagement, the one end left driving shaft C12 are mounted on cabinet D1 by bearings D 2, and the other end is mounted on left Driving terminal D5；Right drive
Dynamic driven gear C21 is connected on right driving axle C22 by spline, and right driving driven gear C21 is often nibbled with right driving gear B25
Transmission is closed, the one end right driving axle C22 is mounted on cabinet D1 by bearings D 2, and the other end is mounted on right Driving terminal D6；
Box assembly D includes cabinet D1, bearings D 2, differential steering end cap D3, bolt D4, left Driving terminal D5 and right driving
End cap D6, left Driving terminal D5 are mounted on cabinet D1 by bolt D4, and right Driving terminal D6 is mounted on cabinet by bolt D4
On D1；
Hydraulic system includes fixed displacement motor E11, fuel tank E12, two-way variable displacement pump E13, oil pipe E14, check valve E15, overflow
Valve E16, filter E21, slippage pump E22, two four-way electromagnetic reversing valve E31 and electromagnet E32, wherein two-way variable displacement pump
E13, check valve E15, overflow valve E16, two four-way electromagnetic reversing valve E31 and fixed displacement motor E11 form hydrostatic nothing capable of reversing
Grade speed change circuit, fuel tank E12, filter E21, slippage pump E22, oil pipe E14, overflow valve E16 form feed circuit, bidirectional variable
It pumps E13 and fixed displacement motor E11 and forms hydrostatic variable transmission circuit, feed circuit can be returned in hydrostatic variable transmission
Repairing when road works, in an inactive state by overflow valve E16 by hydraulic oil off-load to fuel tank E12, electromagnet E32 is mounted on two
On the four-way electromagnetic reversing valve E31 of position, and electromagnet E32 interacts connection with No.1 shift fork axle A13, to reduce operation difficulty.
1) power transmission route：
One gear：No.1 shift fork axle A13 is moved to left, and No.1 shift fork A15 drives No.1 combined cover A27 to move to left, and power is by an axis A21
It is transferred to No.1 combined cover A27 through No.1 splined hub A28, then is transferred to a gear driven gear A34 through a gear driving gear A26,
From a gear driven gear A34 output；
Second gear：No. two shift fork axle A14 are moved to right, and two or three gear shift fork A15 drive two or three gear combined cover A23 to move to right, and power is by one
Axis A21 is transferred to two or three gear combined cover A23 through two third gear splined hub A25, then through two gear driving gear A24 to be transferred to second gear driven
Gear A 33 is transferred to two axis A31 by second gear driven gear A33, from a gear driven gear A34 output；
Three gears：No. two shift fork axle A14 are moved to left, and two or three gear shift fork A15 drive two or three gear combined cover A23 to move to left, and power is by one
Axis A21 is transferred to two or three gear combined cover A23 through two third gear splined hub A25, then to be transferred to three gears driven through three gear driving gear A22
Gear A 32 is transferred to two axis A31 by three gear driven gear A32, from a gear driven gear A34 output；
It reverses gear：No.1 shift fork axle A13 is moved to right, and No.1 shift fork A15 drives No.1 combined cover A27 to move to right, and power is by an axis A21
It is transferred to No.1 combined cover A27 through No.1 splined hub A29, then the driving gear A28 that reversed gear is transmitted to reverse idler gear A42,
The driven gear A35 that reverses gear is transferred to by reverse idler gear A42, the driven gear A35 that reverses gear is transmitted to two axis A31, from one gear from
Moving gear A34 output；
2) power double fluid imports
One gear driven gear A34 is often engaged with input gear B11, by the driving dynamics of gear through input gear B11
Drive to left gear ring B17 and right gear ring B27；
The steering power inputted by hydraulic system E is inputted by fixed displacement motor E11, and fixed displacement motor E11 driving turns to driving tooth
Wheel B38 is engaged with driven gear B37 is turned to, and then steering shaft B36, steering shaft B36 is driven to drive left sun gear B16 and the right sun
Take turns B26；
Driving dynamics are inputted by left gear ring B17 and right gear ring B27, and steering power is by left sun gear B16 and right sun gear B26
Input, double-current power are exported after converging by the left lateral gear rack B14 and right lateral gear rack B24 of planetary gear mechanism；
3) straight-line travelling working principle
Power is through gear to input gear B11, and then power divides two-way, drives to left gear ring B17, another way all the way
Right gear ring B27 is driven to, in straight-line travelling, the swash plate of two-way variable displacement pump E13 is placed in center zero, due to hydrostatic stepless change
Without running of hydraulic power oil in fast drive circuit, fixed displacement motor E11 does not rotate, and since fixed displacement motor E11 does not rotate, is mounted on steering shaft
Whole gears on B11 do not rotate, and the power of left gear ring B17 is by left lateral star-wheel B13, left lateral gear rack B14, left driving active
Gear B 15, left driving driven gear C11 to left driving shaft C12, and then drive left track；The power of right gear ring B27 is by right lateral
Star-wheel B23, right lateral gear rack B24, right driving driving gear B25, right driving driven gear C21 and right driving axle C22, in turn
Drive right side track；It is contrary since left sun B16 is that revolving speed is identical with the hyperspin feature of right sun gear B26, therefore,
When straight-line travelling, it is identical, square for a pair of of size that the power on steering shaft B36 is acted on by left sun gear B16 and right sun gear B26
To opposite power, steering shaft B36 is self-locking, and agricultural tracked carrier straight-line travelling not will lead to driving dynamics from steering shaft B36
It exports to fixed displacement motor E11；
4) advance Turning travel
When gear is placed in forward gear, the swash plate of two-way variable displacement pump E13 is placed in non-center zero, and electromagnet E32 is not
When energization：
Variable-speed dynamic is through gear to input gear B11, and then power divides two-way, drives to left gear ring B17 all the way, separately
Right gear ring B27 is driven to all the way, and since the swash plate of two-way variable displacement pump E13 is placed in non-center zero, fixed displacement motor E11 is in hydraulic work
With lower rotation, and then the whole gears rotation being mounted on steering shaft B36 is driven, due to left sun gear B16 and right sun gear B26
Revolving speed it is identical, contrary, power makes turning for left lateral gear rack B14 and right lateral gear rack B24 after double fluid converges
Speed one increases and another is reduced, revolving speed one for finally promoting to be transferred to left driving shaft B15 and right driving axle B25 increase and
Another is reduced, so that rotational speed difference occur in left track and right side track, to realize steering；The direction of steering and two-way change
The swash plate deflection direction of amount pump E13 is at certain relationship, and the angular speed of steering and the swash plate deflection angle of two-way variable displacement pump E13 are at one
Certainty ratio relationship；
5) turning backward travels
By advance Turning travel it is found that when the rotation of input gear B11 opposite direction, due to the fixed displacement motor for steering
The direction of rotation of E11 is constant, therefore the characteristics of motion of steering system is unchanged, after power converges, left track and right side track
The rule of rotation speed change is unchanged, causes under the conditions of identical steering operation, advances and the driving direction of reversing is reversed, give driving band
Great inconvenience, or even traffic safety is influenced, to solve the above-mentioned problems, provided with two opened synchronous the reversing under the conditions of
Position four-way electromagnetic reversing valve E31：
It reverses gear when gear is placed in, the swash plate of two-way variable displacement pump E13 is placed in non-center zero, and electromagnet E32 is powered
When, the power of reverse travel is through gear to input gear B11, and then power divides two-way, left gear ring B17 is driven to all the way,
Another way drives to right gear ring B27, and since the swash plate of two-way variable displacement pump E13 is placed in non-center zero, electromagnet E32 is powered, and two
Position four-way electromagnetic reversing valve makes the hydraulic circuit between two-way variable displacement pump E13 and fixed displacement motor E11 commutate, therefore power is in planet
After converging in gear mechanism, the steering rule of agricultural tracked carrier reversing is identical as the steering rule advanced, thus after realizing
Turning travel is moved back, in order to reduce operation difficulty, electromagnet E32 can be directly controlled by No.1 shift fork axle A13.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of variable speed drive for tracked carrier, including gear component, power split path transmission component, power
Output precision, box assembly and hydraulic system, which is characterized in that gear component, power split path transmission component and hydraulic pressure system
System connection, and gear component is connect with power split path transmission component, power split path transmission component and power output component connect
It connects, gear component, power split path transmission component and power output component are mounted in box assembly, and specific structure is as follows：
In gear component, the gear lever for controlling shift is mounted on cabinet, gear lever bottom end and No.1 shift fork axle, two
The switching connection of number shift fork axle, for controlling No.1 shift fork axle, No. two shift fork axles realize gearing movements, are provided in No. two shift fork axles
Two or three keep off shift forks, are provided with No.1 shift fork in No.1 shift fork axle；
One axis is mounted on cabinet, and three gear driving gears, two gear driving gear, one keep off driving gear and reverses gear driving gear successively
Empty set is equipped with No. two splined hubs and No.1 splined hub on an axis on an axis, is provided with and is used in No. two splined hubs
No. two combined covers in conjunction with No. two shift forks are provided with for the No.1 combined cover in conjunction with No.1 shift fork in No.1 splined hub,
No. two combined cover exterior circumferentials are provided with the allocating slot for the insertion of No. two shift forks, and No.1 combined cover exterior circumferential is provided with for one
The allocating slot of number shift fork insertion；
No. two adjacent sides of splined hub are provided with external splines hub in three gear driving gears, in two gear driving gear and No. two flowers
The adjacent side of key hub is provided with external splines hub, and the gear driving gear side adjacent with No.1 splined hub is provided with external splines
Hub, reversing gear, the driving gear side adjacent with No.1 splined hub is provided with external splines hub；
Two axis are mounted on cabinet, and the three gear driven gears often engaged with three gear driving gears and second gear master are provided on two axis
Second gear driven gear that moving gear often engages, the gear driven gear often engaged with a gear driving gear and the driven gear that reverses gear；
Reverse gear shaft one end is mounted on cabinet, and the other end is provided with for nibbling simultaneously with the driven gear that reverses gear, the driving gear that reverses gear
The reverse idler gear of conjunction；
In power split path transmission component, gear ring frame is mounted in steering shaft, is provided with input gear on the outside of gear ring frame, in gear ring frame
Side is provided with left gear ring and right gear ring, and left sun gear and right sun gear are separately mounted in steering shaft, and multiple left planetary gears are logical
It crosses left lateral gear rack to be evenly arranged on around left sun gear, left lateral gear rack one end is mounted on cabinet, and other end empty set is even
In spindle, left driving gear is mounted on left lateral gear rack, and multiple right planetary gears are evenly arranged on the right side by right lateral gear rack
Around sun gear, right lateral gear rack is mounted on cabinet, and right driving gear is mounted on right lateral gear rack；Steering shaft installation
On cabinet, one end of the connecting shaft is mounted on cabinet, and other end empty set is equipped in steering shaft, in steering shaft and turns to actively
The steering driven gear of gear engagement, is equipped with driven wheel of differential in connecting shaft, and planetary gear is sleeved in planetary gear shaft, row
Star gear shaft is fixed on differential steering end cap, and planetary gear side and driven wheel of differential engaged transmission, planetary gear are another
Side and drive bevel gear engaged transmission；Diversion driving-gear is mounted on fixed displacement motor；
In power output component, left driving driven gear is connected on left driving shaft, left driving driven gear and left driving gear
Often engagement, left driving shaft one end are mounted on cabinet, and the other end is mounted on left Driving terminal；Right driving driven gear is connected to
On right driving axle, right driving driven gear is often engaged with right driving gear, and right driving axle one end is mounted on cabinet, other end peace
On right Driving terminal；
Box assembly includes cabinet, the differential steering end cap for installing planetary gear shaft, left Driving terminal and right Driving terminal,
Left Driving terminal and right Driving terminal are mounted on cabinet；
In hydraulic system, it is provided with hydrostatic variable speed circuit capable of reversing, feed circuit and hydrostatic stepless change capable of reversing
Fast drive circuit, feed circuit repairing in hydrostatic variable transmission loop works, in an inactive state by hydraulic oil
Off-load, and the electromagnet in hydrostatic variable speed circuit capable of reversing interacts connection with No.1 shift fork axle.
2. a kind of variable speed drive for tracked carrier according to claim 1, which is characterized in that No. two splines
Hub is located on the axis between three gear driving gears and two gear driving gear.
3. a kind of variable speed drive for tracked carrier according to claim 1, which is characterized in that No.1 spline
Hub is located on the axis between a gear driving gear and the driving gear that reverses gear.
4. a kind of variable speed drive for tracked carrier according to claim 1, which is characterized in that left lateral star tooth
Taking turns quantity is any one number in 2,3,4.
5. a kind of variable speed drive for tracked carrier according to claim 1, which is characterized in that right lateral star tooth
Taking turns quantity is any one number in 2,3,4.
6. a kind of variable speed drive for tracked carrier according to claim 1, which is characterized in that capable of reversing quiet
Hydraulic stepless speed change circuit is by electromagnet, two-way variable displacement pump, check valve, overflow valve, two four-way electromagnetic reversing valves and quantitative horse
Up to composition.
7. a kind of variable speed drive for tracked carrier according to claim 6, which is characterized in that electromagnet peace
On two four-way electromagnetic reversing valves.
8. a kind of variable speed drive for tracked carrier according to claim 1, which is characterized in that feed circuit
It is made of fuel tank, filter, slippage pump, oil pipe, overflow valve.
9. a kind of variable speed drive for tracked carrier according to claim 1, which is characterized in that hydrostatic nothing
Grade gear circuit is made of two-way variable displacement pump and fixed displacement motor.
10. a kind of described in any item variable speed drives for tracked carrier, feature exist according to claim 1~9
In power is through gear to input gear, and then power divides two-way, drives to left gear ring all the way, and another way drives to right tooth
Circle, in straight-line travelling, the swash plate of two-way variable displacement pump is placed in center zero, due to aneroid in hydrostatic variable transmission circuit
Pressure oil flowing, fixed displacement motor does not rotate, and since fixed displacement motor does not rotate, the whole gears being mounted in steering shaft do not rotate, left
The power of gear ring by left lateral star-wheel, left lateral gear rack, left driving driving gear, left driving driven gear to left driving shaft, into
And drive left track；The power of right gear ring is driven by right lateral star-wheel, right lateral gear rack, right driving driving gear, right driving
Gear and right driving axle, and then drive right side track；Since the left sun is identical as the revolving speed of right sun gear, contrary, thus it is logical
Cross that the power size that left sun gear is acted on right sun gear in steering shaft is identical, contrary, and steering shaft is self-locking, agricultural crawler belt
Transport vehicle straight-line travelling；
When gear is placed in forward gear, the swash plate of two-way variable displacement pump is placed in non-center zero, and electromagnet is not powered on, and speed change is dynamic
Power is through gear to input gear, and then power divides two-way, drives to left gear ring all the way, and another way drives to right gear ring, by
It is placed in non-center zero in the swash plate of two-way variable displacement pump, fixed displacement motor rotates under hydraulic action, and then drives and be mounted on steering
Whole gears rotation on axis, since left sun gear is identical as the revolving speed of right sun gear, contrary, power is after double fluid converges
So that revolving speed one of left lateral gear rack and right lateral gear rack increases and another is reduced, finally promote to be transferred to left driving
Revolving speed one of axis and right driving axle increases and another is reduced, so that there is rotational speed difference in left track and right side track, from
And it realizes and turns to；
Gear is placed in when reversing gear, and the swash plate of two-way variable displacement pump is placed in non-center zero, when electromagnet is powered, reverse travel
Power through gear to input gear, then power divides two-way, drives to left gear ring all the way, and another way drives to right tooth
Circle, since the swash plate of two-way variable displacement pump is placed in non-center zero, electromagnet is powered, and two four-way electromagnetic reversing valves make two-way change
Hydraulic circuit between amount pump and fixed displacement motor commutates, therefore after power converges in planetary gear mechanism, agricultural tracked carrier
The steering rule of reversing is identical as the steering rule advanced, to realize that turning backward travels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036283.XA CN108843787B (en) | 2018-09-06 | 2018-09-06 | Variable speed transmission device for crawler transport vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036283.XA CN108843787B (en) | 2018-09-06 | 2018-09-06 | Variable speed transmission device for crawler transport vehicle |
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| CN108843787A true CN108843787A (en) | 2018-11-20 |
| CN108843787B CN108843787B (en) | 2019-12-24 |
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| CN201811036283.XA Expired - Fee Related CN108843787B (en) | 2018-09-06 | 2018-09-06 | Variable speed transmission device for crawler transport vehicle |
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| CN108843787B (en) | 2019-12-24 |
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