CN208793551U - A kind of double fluid driving variable speed drive for endless-track vehicle - Google Patents

Abstract

A kind of double fluid driving variable speed drive for endless-track vehicle, wherein, gear component, differential steering component are connect with hydraulic system respectively, differential steering component is connect with double-current driving assembly, gear component, differential steering component and double-current driving assembly 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

A kind of double fluid driving variable speed drive for endless-track vehicle

Technical field

The utility model relates to gear technical field more particularly to a kind of double fluid driving speed changes for endless-track vehicle Transmission device.

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.In split path transmission scheme, is inputted, turned to using variable speed if turning to input power Flexibly, turning radius can consecutive variations, steering angular velocity and steering mechanism input revolving speed proportion relation, turn to essence Standard, superior performance；In the split path transmission scheme using planetary gear mechanism, steering operation mechanism (steering wheel or steering linkage) Constant (such as: the steering operation mechanism for turning to disc type, steering wheel is biased to a left side when moving forward and backward in steering operation direction Side or right side), for operating steering mechanism to the left, when advance, operate steering mechanism to the left, after power confluence, left track Slow down, right side track accelerates, and endless-track vehicle turns to the left, when retrogressing, equally operates steering mechanism to the left, when due to reversing, becomes Fast input power is reversed, and it is unchanged to turn to input power direction, inclined due to steering mechanism although endless-track vehicle travels backward Turn that direction is unchanged, therefore cause the changing rule of left track and right side track unchanged, it may be assumed that left track subtracts with respect to direction of advance Speed, right side track with respect to direction of advance accelerate (that is: left track accelerate reversing, right side track slow down reversing), endless-track vehicle to Right side reverse travel；When steering mechanism deflects to the left, when advance turns to the left to be turned to the right when then moving back, and then causes to operate Difficulty, or even there is safety accident.

Utility model content

The technical issues of the utility model is solved is to provide a kind of double fluid driving gear for endless-track vehicle Device, to solve the disadvantage in above-mentioned background technique.

The technical problem solved by the utility model is implemented by the following technical solutions:

It is a kind of for endless-track vehicle double fluid driving variable speed drive, including gear component, differential steering component, Double-current driving assembly, box assembly and hydraulic system, wherein gear component, differential steering component respectively with hydraulic system Connection, and differential steering component is connect with double-current driving assembly, gear component, differential steering component and double-current driving assembly It is mounted in box assembly, 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 No. two 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 differential steering component, one end of the connecting shaft connects driven wheel of differential, other end connection left side tooth sector, connecting shaft One end is mounted on cabinet, and other end empty set is in steering shaft；Planetary gear shaft is fixed on differential steering end cap, planetary gear It is sleeved in planetary gear shaft, and planetary gear side is engaged with drive bevel gear, the planetary gear other side and driven wheel of differential Engagement, drive bevel gear and driven wheel of differential form constant speed reverse drive mechanism by planetary gear shaft, planetary gear；It is mounted on Diversion driving-gear on fixed displacement motor is often engaged with driven gear is turned to；

In double-current driving assembly, left driving assembly is arranged symmetrically with right driving assembly about input gear, input shaft one end It is mounted on cabinet, the other end is mounted on auxiliary box body, and the input gear often engaged with a gear driven gear is mounted on input shaft On；

In left driving assembly, left sun gear is mounted on input shaft, and multiple left planetary gears are equal by left lateral gear rack Cloth is around left sun gear, and left gear ring frame one end is mounted on input shaft, and the other end is mounted on cabinet, sets on the inside of left gear ring frame It is equipped with left gear ring, is provided with the left steering driven gear often engaged with left steering gear, left driving driving tooth on the outside of left gear ring frame Wheel is mounted on left lateral gear rack, and left driving driven gear is mounted on left driving shaft, left driving driving gear and left driving The normal engaged transmission of driven gear, left driving shaft one end are mounted on cabinet, and the other end is mounted on auxiliary box body；

In right driving assembly, right sun gear is mounted on input shaft, and multiple right planetary gears are equal by right lateral gear rack Cloth is around right sun gear, and right gear ring frame one end is mounted on input shaft, and the other end is mounted on cabinet, sets on the inside of right gear ring frame It is equipped with right gear ring, is provided with the right turn driven gear often engaged with right turn gear, right driving driving tooth on the outside of right gear ring frame Wheel is mounted on right lateral gear rack, and right driving driven gear is mounted on right driving axle, right driving driving gear and right driving The normal engaged transmission of driven gear, right driving axle one end are mounted on cabinet, and the other end is mounted on auxiliary box body；

Box assembly includes cabinet, differential steering end cap and auxiliary box body for installing planetary gear shaft；

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 Flow 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, repairing Circuit repairing in hydrostatic variable transmission loop works, in an inactive state by overflow valve by hydraulic oil off-load to oil Case.

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 No. two shift forks drive No. two combined covers to move to right, and power is by an axis through two third gear splines Hub is transferred to No. two combined covers, then is transferred to second gear driven gear through two gear driving gear, is transferred to two by second gear driven gear Axis, from a gear driven gear output；

Three gears: No. two shift fork axles move to left, and No. two shift forks drive No. two combined covers to move to left, and power is by an axis through two third gear splines Hub is transferred to No. two combined covers, then is transferred to three gear driven gears through three gear driving gears, is transferred to two by three gear driven gears Axis, from a gear driven gear output；

Reverse 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

Spatially, a gear driven gear is often engaged with input gear, is driven by the power of gear through input gear To input shaft, then left sun gear and right sun gear are driven to respectively；

Left steering driven gear is passed to from left steering gear by the power that hydraulic system inputs, and then drives to left tooth Circle, passes to right turn driven gear from right turn gear, and then drive to right gear ring；

The power of left sun gear and left gear ring by left lateral star-wheel is transferred to left lateral gear rack after converging, finally by left drive Moving axis output；

The power of right sun gear and right gear ring by right lateral star-wheel is transferred to right lateral gear rack after converging, finally by right drive Moving axis output；

Straight-line travelling

Power is through gear to input gear, and then power divides two-way, drives to left driving assembly all the way, and another way passes It moves to right driving assembly, at this point, 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, and left steering gear is engaged with left steering driven gear, right turn gear is engaged with right turn driven gear, therefore left steering Driven gear is not rotated with right turn driven gear, and left gear ring is not rotated with right gear ring；The power of left driving assembly is by Zuo Taiyang Wheel is transferred to left lateral star-wheel, through left lateral gear rack, left driving driving gear, left driving driven gear and left driving shaft, in turn Left track is driven, the power of right driving assembly is transferred to right lateral star-wheel by right sun gear, leads through right lateral gear rack, right driving Moving gear, right driving driven gear and right driving axle, and then right side track is driven, since left steering gear and right turn gear turn Speed it is identical, contrary, therefore by left steering gear with power size of the right turn gearing in steering shaft identical, direction phase Instead, steering shaft is self-locking, endless-track vehicle 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, and electromagnet is not powered on, speed change Power is through gear to input gear, and then power divides two-way, drives to left driving assembly all the way, and another way drives to right drive Dynamic component, since the swash plate of two-way variable displacement pump is placed in non-center zero, steering power is inputted by fixed displacement motor, and fixed displacement motor is in liquid The lower rotation of pressure effect, whole gears rotation that fixed displacement motor driving is mounted in steering shaft, left steering gear and left steering are driven Gear engagement, right turn gear are engaged with right turn driven gear, and left steering gear is identical as the revolving speed of right turn gear, side To on the contrary, so that left steering driven gear is identical as right turn driven gear revolving speed, contrary, so that left gear ring Identical, contrary with right gear ring revolving speed, power makes left lateral gear rack and right lateral gear rack after double fluid converges Revolving speed one increases and another is reduced, and revolving speed one for finally promoting to be transferred to left driving shaft and right driving axle increases and another A reduction, so that rotational speed difference occur in left track and right side track, to realize differential steering；

Turning backward traveling

Gear, which is placed in, to reverse gear, and the swash plate of two-way variable displacement pump is placed in non-center zero, and electromagnet is powered, reverse travel Power through gear to input gear, then power divides two-way, drives to left driving assembly all the way, and another way drives to the right side Driving assembly, 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 Hydraulic circuit commutation between two-way variable displacement pump and fixed displacement motor, therefore after power converges in planetary gear mechanism, endless-track vehicle The steering rule of reversing is identical as the steering rule advanced, to realize that turning backward travels.

The utility model has the advantages that

1) the utility model forms hydrostatic variable transmission circuit using fixed displacement motor and two-way variable displacement pump, to realize Endless-track vehicle turning radius consecutive variations improve and turn to accuracy；

2) steering power is driven to planetary gear mechanism using coaxial transmission by the utility model, compact-sized, with simplification Manufacturing process；

3) reversal valve, after change is reversed gear, hydraulic pressure system is arranged in the utility model between fixed displacement motor and two-way variable displacement pump System automatically switches hydraulic circuit, to realize advance and retreat identical steering characteristic；

4) the utility model links the electromagnet in hydrostatic variable speed circuit capable of reversing with No.1 shift fork axle, with drop Low operation difficulty, reduces safety accident.

Detailed description of the invention

Fig. 1 is the structure connection diagram of the preferred embodiment of the utility model.

Fig. 2 is the gear modular construction connection schematic diagram in the preferred embodiment of the utility model.

Fig. 3 is the differential steering modular construction connection schematic diagram in the preferred embodiment of the utility model.

Fig. 4 is the double-current driving assembly structure connection diagram in the preferred embodiment of the utility model.

Fig. 5 is the hydraulic system structure connection schematic diagram in the preferred embodiment of the utility model.

Specific embodiment

In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under Face combines and is specifically illustrating, and the utility model is further described.

Referring to a kind of double fluid driving variable speed drive for endless-track vehicle of FIG. 1 to FIG. 5, including gear component A, differential steering component B, double-current driving assembly C, box assembly D and hydraulic system E, gear component A, differential steering component B is connect with hydraulic system E respectively, and differential steering component B is connect with double fluid driving assembly C, and gear component A, differential turn It is mounted in box assembly D to component B and double fluid driving assembly C, 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, No. two Shift fork A15, No.1 shift fork A16, an axis A21, three gear driving gear A22, No. two combined cover A23, two gear driving gear A24, two Number 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, gear a 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 mounted on cabinet by support base A12 for the one end gear lever A11 On D1, the other end and No.1 shift fork axle A13, No. two shift fork axle A14 switchings are connected, for controlling No.1 shift fork axle A13, No. two groups Fork shaft A14 realizes gearing movement, is provided with No. two shift fork A15 on No. two shift fork axle A14, is provided with one on No.1 shift fork axle A13 Number 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；

Differential steering component B includes steering shaft B11, connecting shaft B12, left steering gear B 13, right turn gear B 14, turns to Driven gear B15, diversion driving-gear B16, drive bevel gear B21, planetary gear shaft B22, driven wheel of differential B23 and planet tooth Take turns B24, wherein the both ends steering shaft B11 are mounted on cabinet D1 by bearings D 2, are equipped with master by spline on steering shaft B11 Dynamic bevel gear B21, right hand steering gear B 14 and steering driven gear B15, the one end connecting shaft B12 are connected by spline from mantle Gear B 23, the other end connect left side tooth sector B13 by spline, and the one end connecting shaft B12 is mounted on cabinet D1 by bearings D 2 On, other end empty set is on steering shaft B11, axial direction of the bearings D 2 to connecting shaft B12 axial limiting and receiving driven wheel of differential B23 Component；Planetary gear shaft B22 is fixed on differential steering end cap D3, and planetary gear B24 is sleeved on planetary gear shaft B22, and The side planetary gear B24 and drive bevel gear B21 engaged transmission, biography is engaged with driven wheel of differential B23 in the other side planetary gear B24 Dynamic, drive bevel gear B21 and driven wheel of differential B23 pass through planetary gear shaft B22, planetary gear B24 composition constant speed reverse drive Mechanism；The normal engaged transmission of diversion driving-gear B16 and steering driven gear B15 being mounted on fixed displacement motor E11；

Double-current driving assembly C includes left driving assembly C1, right driving assembly C2, input gear C3 and input shaft C4, left drive Dynamic component C1 include left gear ring frame C11, left lateral star gear C 12, left lateral gear rack C13, left driving driving gear C14, a left side too Sun wheel C15, left driving shaft C16, left driving driven gear C17, left gear ring C18 and left steering driven gear C19, right driving assembly C2 includes right gear ring frame C21, right lateral star gear C 22, right lateral gear rack C23, right driving driving gear C24, right sun gear C25, right driving axle C26, right driving driven gear C27, right gear ring C28 and right turn driven gear C29, left driving assembly C1 with Right driving assembly C2 is arranged symmetrically about input gear C3, and input shaft C4 is separately mounted to cabinet D1 and auxiliary box body by bearings D 2 On D5, it is mounted on input shaft C4 with the gear driven gear A34 input gear C3 often engaged by spline fitted；

In left driving assembly C1, left sun gear C15 is mounted on input shaft C4 by spline fitted, left lateral star gear C 12 It is evenly arranged on around left sun gear C15 by left lateral gear rack C13,12 quantity of left lateral star gear C is n (appointing in n 2,3,4 Meaning one), the one end left gear ring frame C11 is mounted on input shaft C4 by bearings D 2, and the other end is mounted on cabinet by bearings D 2 On D1, bearings D 2 limits the axial freedom of left gear ring frame C11, is provided with left gear ring C18 on the inside of left gear ring frame C11, outside is set It is equipped with the left steering driven gear C19 often engaged with left steering gear B 13, left driving driving gear C14 is mounted on by spline On left lateral gear rack C13, left driving driven gear C17 is mounted on left driving shaft C16 by spline, left driving driving gear The normal engaged transmission of C14 and left driving driven gear C17, the one end left driving shaft C16 is mounted on cabinet D1 by bearings D 2, another End is mounted on auxiliary box body D5 by bearings D 2, and bearings D 2 limits the axial freedom of left driving shaft C16, left driving driving gear Axial position of the C14 on left lateral carrier C13 is defined, axial position of the left driving driven gear C17 on left driving shaft C16 It is defined；

In right driving assembly C2, right sun gear C25 is mounted on input shaft C4 by spline, and right lateral star gear C 22 passes through Right lateral gear rack C23 is evenly arranged on around right sun gear C25, and 22 quantity of right lateral star gear C is that n is (any one in n 2,3,4 It is a), the one end right gear ring frame C21 is mounted on input shaft C4 by bearings D 2, and the other end is mounted on cabinet D1 by bearings D 2, Bearings D 2 limits the axial freedom of left gear ring frame C11, be provided with right gear ring C28 on the inside of right gear ring frame C21, outside be provided with Right turn the driven gear C29, right driving driving gear C24 that right turn gear B 14 often engages are mounted on right lateral star by spline On tooth rest C23, right driving driven gear C27 is mounted on right driving axle C26 by spline, right driving driving gear C24 with Right driving driven gear C27 is often engaged, and the one end right driving axle C26 is mounted on cabinet D1 by bearings D 2, and the other end passes through axis It holds D2 to be mounted on auxiliary box body D5, bearings D 2 limits the axial freedom of left driving shaft C16, and left driving driving gear C14 is on a left side Axial position on planet carrier C13 is defined, and axial position of the left driving driven gear C17 on left driving shaft C16 is defined；

Box assembly D includes cabinet D1, bearings D 2, differential steering end cap D3, bolt D4 and auxiliary box body D5；

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 electromagnet E32, double It is formed to variable pump E13, check valve E15, overflow valve E16, two four-way electromagnetic reversing valve E31 and fixed displacement motor E11 capable of reversing Hydrostatic variable speed circuit, fuel tank E12, filter E21, slippage pump E22, oil pipe E14, overflow valve E16 form feed circuit, Two-way variable displacement pump E13 and fixed displacement motor E11 forms hydrostatic variable transmission circuit, and feed circuit is in hydrostatic variable speed Repairing when drive circuit works, in an inactive state by overflow valve E16 by hydraulic oil off-load to fuel tank E12, electromagnet E32 pacifies On two four-way electromagnetic reversing valve E31, and electromagnet E32 interacts connection with No.1 shift fork axle A13, difficult to reduce operation Degree.

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 No. two shift fork A15 drive No. two combined cover A23 to move to right, and power is by an axis A21 No. two combined cover A23 are transferred to through two third gear splined hub A25, then are transferred to second gear driven gear through two gear driving gear A24 A33 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 No. two shift fork A15 drive No. two combined cover A23 to move to left, and power is by an axis A21 No. two combined cover A23 are transferred to through two third gear splined hub A25, then are transferred to three gear driven gears through three gear driving gear A22 A32 is transferred to two axis A31 by three gear driven gear A32, from a gear driven gear A34 output；

Reverse 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

Main driving power

Spatially, a gear driven gear A34 is often engaged with input gear C3, by the power of gear through input gear C3 drives to input shaft C4, then drives to left sun gear C15 and right sun gear C25 respectively；

Hydraulic control power

The power inputted by hydraulic system E passes to left steering driven gear C19 from left steering gear B 13, and then is driven To left gear ring C18, right turn driven gear C29 is passed to from right turn gear B 14, and then drive to right gear ring C28；

The power of left sun gear C15 and left gear ring C18 by left lateral star-wheel C12 are transferred to left lateral gear rack after converging C13 is finally exported by left driving shaft C16；

The power of right sun gear C25 and right gear ring C28 by right lateral star-wheel C22 are transferred to right lateral gear rack after converging C23 is finally exported by right driving axle C26；

3) straight-line travelling working principle

Power is through gear to input gear C3, and then power divides two-way, drives to left driving assembly C1 all the way, another Road drives to right driving assembly C2；At this point, the swash plate of two-way variable displacement pump E13 is placed in center zero, due to hydrostatic variable speed Without running of hydraulic power oil in drive circuit, fixed displacement motor E11 does not rotate, since fixed displacement motor E11 does not rotate, on steering shaft B11 Whole gears do not rotate, and left steering gear B 13 is engaged with left steering driven gear C19, right turn gear B 14 and right turn from Moving gear C29 engagement, therefore left steering driven gear C19 and right turn driven gear C29 does not rotate, left gear ring C18 and right tooth Circle C28 does not rotate, and the power of left driving assembly C1 is by left sun gear C15 to left lateral star-wheel C12, through left lateral gear rack C13, a left side Driving gear C14, left driving driven gear C17 and left driving shaft C16 are driven, and then drives left track, right driving assembly C2 Power by right sun gear C25 to right lateral star-wheel C22, through right lateral gear rack C23, right driving driving gear C24, right driving from Moving gear C27 and right driving axle C26, and then right side track is driven, due to the rotation of left steering gear B 13 and right turn gear B 14 Turning feature is that revolving speed is identical, contrary, therefore is acted on steering shaft B11 by left steering gear B 13 and right turn gear B 14 Power size it is identical, contrary, steering shaft B11 is self-locking, not will lead to driving dynamics and exports from steering shaft B11 to fixed displacement motor E11, endless-track vehicle straight-line travelling；

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 C3, and then power divides two-way, drives to left driving assembly C1 all the way, Another way drives to right driving assembly C2；Since the swash plate of two-way variable displacement pump E13 is placed in non-center zero, steering power is by quantitative Motor E11 input, fixed displacement motor E11 rotate under hydraulic action, and fixed displacement motor E11 drives whole gears on steering shaft B11 Rotation, left steering gear B 13 are engaged with left steering driven gear C19, and right turn gear B 14 is nibbled with right turn driven gear C29 It closes, and left steering gear B 13 is identical as the revolving speed of right turn gear B 14, contrary, so that left steering driven gear C19 and right turn driven gear C29 revolving speed are identical, contrary so that left gear ring C18 it is identical as right gear ring C28 revolving speed, Contrary, power makes revolving speed one raising of left lateral gear rack C13 and right lateral gear rack C23 after double fluid converges And another is reduced, and is finally promoted revolving speed one that is transferred to left driving shaft C16 and right driving axle C26 and is increased and another drop It is low, so that there is rotational speed difference in left track and right side track, to realize differential steering；The direction of steering and two-way variable displacement pump At certain relationship, the swash plate deflection angle of steering angular velocity and two-way variable displacement pump E13 is proportional in the swash plate deflection direction of E13 Relationship；

5) turning backward travels

By advance Turning travel it is found that when the rotation of input gear C3 opposite direction, due to the fixed displacement motor E11 for steering Direction of rotation it is constant, therefore the characteristics of motion of steering system is unchanged, after power converges, left track and right side track revolving speed The rule of variation is unchanged, causes under the conditions of identical steering operation, advances and the driving direction of reversing is reversed, to driving band pole Big inconvenience, or even traffic safety is influenced, to solve the above-mentioned problems, two four-way electromagnetics of synchronous unlatching change under the conditions of reversing To valve E31:

It reversing 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, The power of reverse travel is through gear to input gear C3, and then power divides two-way, drives to left driving assembly C1 all the way, separately Right driving assembly C2 is driven to all the way, 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 E31 makes the hydraulic circuit between two-way variable displacement pump E13 and fixed displacement motor E11 commutate, therefore power exists After converging in planetary gear mechanism, the steering rule of endless-track vehicle reversing is identical as the steering rule advanced, to realize retrogressing Turning travel；To reduce operation difficulty, electromagnet E32 is directly controlled by No.1 shift fork axle A13.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (10)

1. a kind of double fluid driving variable speed drive for endless-track vehicle, including it is gear component, differential steering component, double Flow driving assembly, box assembly and hydraulic system, which is characterized in that 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 is provided with No. two shift forks in No. two shift fork axles, is 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, reverse gear driven 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 differential steering component, one end of the connecting shaft connects driven wheel of differential, other end connection left side tooth sector, one end of the connecting shaft It is mounted on cabinet, other end empty set is in steering shaft；Planetary gear shaft is fixed on differential steering end cap, planetary gear suit In planetary gear shaft, and planetary gear side is engaged with drive bevel gear, and the planetary gear other side is engaged with driven wheel of differential；

In double-current driving assembly, left driving assembly is arranged symmetrically with right driving assembly about input gear, the installation of input shaft one end On cabinet, the other end is mounted on auxiliary box body, and the input gear often engaged with a gear driven gear is mounted on input shaft；

In left driving assembly, left sun gear is mounted on input shaft, and multiple left planetary gears are evenly arranged on by left lateral gear rack Around left sun gear, left gear ring frame one end is mounted on input shaft, and the other end is mounted on cabinet, is provided on the inside of left gear ring frame Left gear ring, left gear ring frame outside are provided with the left steering driven gear often engaged with left steering gear, left driving driving gear peace On left lateral gear rack, left driving driven gear is mounted on left driving shaft, and left driving driving gear and left driving are driven Gear often engages, and left driving shaft one end is mounted on cabinet, and the other end is mounted on auxiliary box body；

In right driving assembly, right sun gear is mounted on input shaft, and multiple right planetary gears are evenly arranged on by right lateral gear rack Around right sun gear, right gear ring frame one end is mounted on input shaft, and the other end is mounted on cabinet, is provided on the inside of right gear ring frame Right gear ring, right gear ring frame outside are provided with the right turn driven gear often engaged with right turn gear, right driving driving gear peace On right lateral gear rack, right driving driven gear is mounted on right driving axle, and right driving driving gear and right driving are driven Gear often engages, and right driving axle one end is mounted on cabinet, and the other end is mounted on auxiliary box body；

Box assembly includes cabinet, differential steering end cap and auxiliary box body for installing planetary gear shaft.

2. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 1, which is characterized in that two Number splined hub is located on the axis between three gear driving gears and two gear driving gear.

3. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 1, which is characterized in that one Number splined hub is located on the axis between a gear driving gear and the driving gear that reverses gear.

4. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 1, which is characterized in that left Planetary gear quantity is any one number in 2,3,4.

5. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 1, which is characterized in that right Planetary gear quantity is any one number in 2,3,4.

6. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 1, which is characterized in that liquid In pressure system, it is provided with hydrostatic variable speed circuit, feed circuit and hydrostatic variable transmission capable of reversing capable of reversing Circuit, hydrostatic variable speed circuit capable of reversing are changed by electromagnet, two-way variable displacement pump, check valve, overflow valve, two four-way electromagnetics It is formed to valve and fixed displacement motor, and electromagnet interacts connection with No.1 shift fork axle.

7. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 6, which is characterized in that electricity Magnet is mounted on two four-way electromagnetic reversing valves.

8. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 6, which is characterized in that mend Oil return line is made of fuel tank, filter, slippage pump, oil pipe, overflow valve.

9. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 6, which is characterized in that quiet Hydraulic stepless speed change drive circuit is made of two-way variable displacement pump and fixed displacement motor.

10. a kind of double fluid driving variable speed drive for endless-track vehicle according to claim 9, which is characterized in that The diversion driving-gear being mounted on fixed displacement motor is often engaged with driven gear is turned to.