CN204942497U

CN204942497U - A kind of double dynamical input type three keeps off endless-track vehicle speed changer

Info

Publication number: CN204942497U
Application number: CN201520716553.7U
Authority: CN
Inventors: 张利峰; 肖名涛; 孙松林; 刘若桥; 吴畏
Original assignee: Hu'nan Nongyou Machinery Group Co Ltd
Current assignee: Hu'nan Nongyou Machinery Group Co Ltd
Priority date: 2015-09-16
Filing date: 2015-09-16
Publication date: 2016-01-06
Anticipated expiration: 2025-09-16

Abstract

The utility model relates to a kind of double dynamical input type three and keeps off endless-track vehicle speed changer, casing is provided with power input mechanism, double dynamical input mechanism, three gear speed change and arrestment mechanism, differential speed type driving mechanism, left track driving mechanism, right side track driving mechanism, power take-off mechanisms.The utility model adopts machinery and the double dynamical input device of hydraulic parallel formula, oil hydraulic motor to control differential speed type the steering gear, three quick change latch devices, the built-in braking device of the gear ring clockwise and anticlockwise of driving wheel both sides planetary gears, effectively can improve endless-track vehicle drive efficiency, manipulation convenience, improve and turn to precision, improve efficient traveling rotating speed matching range, expansion endless-track vehicle purposes, improve driving safety, overcome existing endless-track vehicle transmission efficiency low, travel that cornering drag is large, manipulation difficulty, the edge of a field turn to and stop up the problems such as mud is serious, braking device is complicated.

Description

A kind of double dynamical input type three keeps off endless-track vehicle speed changer

Technical field

The utility model relates to a kind of double dynamical input type three and keeps off endless-track vehicle speed changer.

Background technique

China is Rice Production maximum in the world and country of consumption, Annual planting area about 2,860 ten thousand hectares, account for 1/5 of global Monitoring of Paddy Rice Plant Area, produce 1.85 hundred million tons, rice per year, account for 1/3 of Gross World Product, paddy fields in south china region mainly comprises ten provinces such as Hunan, Jiangxi, Guangdong, Guangxi, and rice yield accounts for the whole nation more than 60%, is the main producing region of China paddy rice.Paddy fields in south china essentialspecies planting paddy rice and cole crop, paddy fields in south china is long-term ponding almost, and winter, soil was moistening without freezing, bearing capacity of soil is poor, and after wheel-type working machine tool enters rice field, sinkage is large, the minimum earth point of wheel exceedes plough pan, and the gear teeth destroy plough pan structure, cause plough pan soft.Wheel-type working machine tool is repeatedly after operation, the plough pan degree of depth is constantly deepened, every farming once, just make cultivating plough sediment layer deepen once, after plough pan is deepened, just need the Work machine of larger diameter wheel and more high-power and weight, and then cause vicious circle, make paddy field become deep mud feet fields, time to a certain extent, machinery such as cultivated land facility, transplanter, combine-harvester etc. can be caused cannot to go to the field operation finally.And submerged weir flow can improve crop yield, reduce pollution of heavy metals, reduce fertilizer amount and the water and soil that protects the fields.But continuously submerging can make rice field softer near the rice harvesting phase, skidding and sunken car very easily appears in Conventional drum farm machinery, cannot complete elemental operation.

Track-laying vehicle for agricultural operation mainly contains cat, crawler-type harvester and crawler farmland transfer vehicle etc.The variable ratio drive system of these endless-track vehicles adopts two types usually, one adopts Purely mechanical power transmission system transferring power, it has, and structure is simple, efficiency advantages of higher, but Purely mechanical power-transmitting unit, gear shift operation is complicated, drive a car or the technical ability of tractor because agricultural machinery operator does not possess usually simultaneously, be difficult to control to the cooperation of clutch, throttle, gearshift, and then limit the development of tractor.Another kind is the endless-track vehicle electrodeless variable-speed drive system adopting oil hydraulic pump-motor integrated device, the endless-track vehicle of electrodeless variable-speed drive system is driven convenience and is improved, agricultural machinery operator need not participate in the technical training of specialty, simple exercise is only needed to grasp driving efficiency, thus like by users, but after adding hydraulic system, drive system efficiency reduces, and heat load increases.Cat particularly in daily production and application process will mount agricultural machinery and implement usually, and agricultural machinery and implement are when farm work, motor is generally in large throttle state, close to constant engine operating mode, travelling speed change is little, power exports larger with moment of torsion, causes that system energy consumption is high, heating value is large, poor high temperature stability, seriously limits the application area of track-laying vehicle.

Simultaneously because the working principle of endless-track vehicle driving system and the travel operation principle of two-wheeled farm machinery are similar, speed changer be usually integrated with turn to, differential, main deceleration, one or more functions such as braking, and at least will integrated turning function.In integrated steering device: what track-laying vehicle in the market adopted steering linkages to operate jaw clutch and multi-disc brake usually turns to scheme, its implementation procedure is: when cat vehicle turn left to time, left side jaw clutch is separated driver's operation left steering pull bar and left side output shaft is braked, because crawler tractor vehicle left side transfer motion power interrupts and brake stopping the rotation, now under the driving of tractor right side power, facility realize turning to the left; In like manner can realize right hand steering, but this steering equipment adopts separation and realizes in conjunction with jaw clutch and break, it turns to precision low, and steering manipulation is poor.In integrated braking, the endless-track vehicle of part farmland operation as cat, crawler-type harvester due to travelling speed slow, after cutting off power, machinery stops fast, does not usually install break.But in order to improve the travel safety of endless-track vehicle, braking device installed by some endless-track vehicles, these braking device are arranged near driving wheel usually, owing to being arranged on transmission system end, braking device often adopts dry type friction disk type break, and brake structure is large, and left and right wheels is arranged symmetrically with, quantity is many, and braking conformity is poor.

Simultaneously due to the stepless speed changes devices of oil hydraulic pump-motor integrated, although stepless transmission can be realized by changing oil hydraulic pump swash plate angle, but in the stepless change procedure of rotating speed, when this device works near amount rotating speed, efficiency is high, moment of torsion stable output, but when tick-over, hydraulicdriven efficiency reduces, the output torque of oil hydraulic motor is little, limits endless-track vehicle high-efficient homework scope.

Model utility content

The technical problem that the utility model solves is to provide a kind of double dynamical input type three to keep off endless-track vehicle speed changer, to solve the shortcoming in above-mentioned background technology.

The technical problem that the utility model solves realizes by the following technical solutions:

The utility model provides a kind of double dynamical input type three to keep off endless-track vehicle speed changer, comprise casing, it is characterized in that, casing is provided with power input mechanism, double dynamical input mechanism, three gear speed change and arrestment mechanisms, differential speed type driving mechanism, left track driving mechanism, right side track driving mechanism, power take-off mechanism, power input mechanism is connected with double dynamical input mechanism and power take-off mechanism, double dynamical input mechanism connects three gear speed change and arrestment mechanisms, three gear speed changes and arrestment mechanism are connected respectively by differential speed type driving mechanism and drive left track driving mechanism, right side track driving mechanism.

In the utility model, the concrete linkage structure of each mechanism is as follows:

Described power input mechanism comprises power and inputs the first axle, PTO power transmission shaft and pto＝power take-off, it is power intake that power inputs first axle one end, and be installed in the first hubcap by the first axle thrust bearing, first hubcap is anchored on casing, the other end is installed on casing by the first axle deep groove ball bearing, first axle deep groove ball bearing side is provided with power input bevel gear, power input wheel sleeve is provided with between power input bevel gear and the first axle deep groove ball bearing, PTO duplex slippage power shift gear is set with between first axle thrust bearing and the first axle deep groove ball bearing, PTO duplex slippage power shift gear is provided with power input selector fork, PTO power transmission shaft one end is installed in casing by deep groove ball bearing in deep groove ball bearing before transmission shaft and transmission shaft, and undertaken spacing by transmission shaft outer end cap, and between deep groove ball bearing, PTO duplex power shift gear is installed in deep groove ball bearing and transmission shaft before transmission shaft, the other end is provided with the main deceleration driving gear of PTO, and being installed in casing by deep groove ball bearing after transmission shaft, after transmission shaft, deep groove ball bearing is undertaken spacing by transmission shaft inner end cap, pto＝power take-off one end is installed on casing by the outer deep groove ball bearing of output shaft, and undertaken spacing by output shaft outer end cap, the other end is clutch end, and be installed on casing by deep groove ball bearing in output shaft, in output shaft, deep groove ball bearing side is provided with output shaft inner end cap and carries out spacing, be provided with the main reduction driven gear of PTO between deep groove ball bearing in the outer deep groove ball bearing of output shaft and output shaft, and be provided with main reduction driven wheel sleeve between the main reduction driven gear of PTO and the outer deep groove ball bearing of output shaft,

Described double dynamical input mechanism comprises hydrostatic stepless speed variator, power inputs the second axle, double dynamical transaxle, hydrostatic stepless speed variator is provided with and stretches to hydrostatic stepless speed variator power input shaft in casing and hydrostatic stepless speed variator pto＝power take-off, and on hydrostatic stepless speed variator pto＝power take-off, the end stretched in casing is provided with hydrostatic stepless speed variator power output gear, power inputs second axle one end and is installed on casing by the second axle thrust bearing, and undertaken spacing by the second hubcap, power inputs the second axle the other end and is connected with hydrostatic stepless speed variator power input shaft, and be installed on casing by the second axle deep groove ball bearing, power inputs on the second axle and is provided with machinery gear driving gear and driven wheel of differential, be provided with driven wheel of differential sleeve between driven wheel of differential and the second axle thrust bearing, driven wheel of differential and power input bevel gear and engage, the mounting structure at double dynamical transaxle two ends is identical, its one end is installed on casing by transaxle deep groove ball bearing, and undertaken spacing by transaxle end cap, double dynamical transaxle is provided with stepless gear driven gear vertically successively, double dynamical input splined hub, machinery gear driven gear, one gear driving gear and two gear driving gears, stepless gear driven gear is installed on double dynamical transaxle by stepless gear sliding bearing sleeve, machinery gear driven gear is installed on double dynamical transaxle by machinery gear sliding bearing sleeve, double dynamical input splined hub is provided with double dynamical combined cover, double dynamical combined cover keeps off driven gear with stepless gear driven gear or machinery and is combined under the effect of selector fork, the tight sleeve of stepless gear is provided with between double dynamical input splined hub and stepless gear driven gear, the stepless gear driven gear the other end is provided with stepless gear follower sleeve, the machinery gear driven gear the other end is provided with machinery gear follower sleeve, be provided with one or two gear driving wheel sleeves between one gear driving gear and two gear driving gears, stepless gear driven gear engages with hydrostatic stepless speed variator power output gear, and machinery gear driven gear keeps off driving gear with machinery and engages,

Described three gear speed changes and arrestment mechanism comprise shifting shaft and brake axle, and the mounting structure at shifting shaft two ends is the same, and its one end is installed on casing by shifting shaft deep groove ball bearing, and are provided with shifting shaft end cap and carry out spacing, shifting shaft is provided with three gear splined hub vertically successively, three gear driven gears, main deceleration driving gear, one gear driven gear, one or two gear splined hub, two gear driven gears, three gear splined hub are installed on the external splines of shifting shaft by internal spline, three gear driven gears are installed on shifting shaft by three gear sliding bearing sleeves, two gear driven gears are installed on shifting shaft by two gear sliding bearing sleeves, one gear driven gear is installed on shifting shaft by a gear sliding bearing sleeve, main deceleration driving gear and one keeps off between driven gear and is provided with main deceleration driving wheel sleeve, one or two gear splined hub are installed on the external splines of shifting shaft by internal spline, one or two gear splined hub are provided with one or two gear combined covers, one or two gear combined covers keep off driven gear or two with one and keep off driven gear and be combined under the effect of one or two gear shift forks, three gear driven gears often engage with double dynamical combined cover, and a gear driven gear and keeps off driving gear and engages, and two gear driven gears and two keep off driving gear and engage, brake axle one end is installed on casing by brake axle deep groove ball bearing, and undertaken spacing by brake axle end cap, the other end is installed in break end cap by break deep groove ball bearing, break end cap inwall is provided with multiple braking steel disc, the plurality of braking steel disc is parallel to each other and spaced apart, brake axle corresponding in break end cap is provided with multiple brake strip by spline, multiple brake strip is parallel to each other and spaced apart, and each brake strip is all engaged between adjacent two braking steel discs, braking steel disc one end is provided with the platen be arranged on brake axle, platen is provided with braking shiifter axle, braking shiifter axle for control platen compress or pine from braking steel disc, brake axle is provided with tumbler gear, tumbler gear engages with main deceleration driving gear,

Described differential speed type driving mechanism comprises differential steering one axle, differential steering jack shaft, differential gear axle, differential steering one axle one end extend out to outside casing, and be installed on casing by the left deep groove ball bearing of differential one axle, the left deep groove ball bearing of differential one axle is undertaken spacing by differential one axle left end cap, the differential steering one axle the other end is installed on casing by the right deep groove ball bearing of differential one axle, and undertaken spacing by differential one axle right end cap, differential steering one axle is provided with differential steering left side gear and differential steering right side gear; The mounting structure at differential steering jack shaft two ends is the same, and its one end is installed on casing by differential jack shaft deep groove ball bearing, and is undertaken spacing by differential jack shaft end cap; Differential steering jack shaft is provided with differential steering intermediate gear, differential steering intermediate gear side is provided with differential breast wheel sleeve; The mounting structure at differential gear axle two ends is the same, its one end is installed on casing by differential gear axle deep groove ball bearing, and being undertaken spacing by differential gear hubcap, differential gear axle is provided with and is positioned at final gear in the middle of differential gear axle and left side planetary gears, right side planetary gears that structure identical symmetrical with about final gear; Left side planetary gears comprises the left lateral carrier be sleeved on successively on differential gear axle, left sun gear and left gear ring, left planetary pinion is installed in left lateral carrier by left planetary pinion supporting component circumference is uniform, and engage with the internal gear of left gear ring and left sun gear simultaneously, left lateral carrier is installed on differential gear axle by needle bearing, and left gear ring is installed on differential gear axle by right sliding bearing sleeve two; Right side planetary gears comprises the right lateral carrier be sleeved on successively on differential gear axle, right sun gear and right gear ring, right planetary pinion is installed in right lateral carrier by right planetary pinion supporting component circumference is uniform, and engage with the internal gear of right gear ring and right sun gear simultaneously, right lateral carrier is installed on differential gear axle by needle bearing, and right gear ring is installed on differential gear axle by right sliding bearing sleeve two; The external toothing of right gear ring engages with differential steering intermediate gear, and differential steering intermediate gear engages with differential steering right side gear, and the external toothing of left gear ring engages with differential steering left side gear, and final gear engages with tumbler gear;

Described left track driving mechanism is identical with right side track driving mechanism structure, and it is symmetrical about final gear, left track driving mechanism comprises track drive axle, track drive axle one end is installed on casing by live axle deep groove ball bearing, and actuation gear is installed, live axle deep groove ball bearing one end is provided with live axle end cap and carries out spacing, cover and supporting protheca in support are installed outside live axle end cap successively, supporting protheca is arranged on track drive axle by supporting sleeve deep groove ball bearing, the two ends overlapped in support are connected with supporting protheca and live axle end cap respectively, track drive axle the other end connecting band track traveling gear, the left outside gears meshing of the left lateral carrier outer end of actuation gear and differential speed type driving mechanism.

In the utility model, in described power input mechanism: first axle thrust bearing one end is provided with for carrying out the first spacing axle thrust bearing snap ring to the first hubcap, first axle thrust bearing snap ring is hole snap ring, and in transmission shaft, deep groove ball bearing one end is provided with deep groove ball bearing in transmission shaft; Being provided with the seal ring one sealed for inputting the first axle to power in first hubcap, in described output shaft outer end cap, being provided with the first Simmer ring for sealing pto＝power take-off.

In the utility model, in described double dynamical input mechanism: hydrostatic stepless speed variator power output gear one end is provided with power output wheel snap ring, machinery gear driving gear one end is provided with machinery gear driving wheel snap ring, and the two gear driving gear the other ends are undertaken spacing by two gear driving wheel snap rings.

In the utility model, described three keep off in speed changes and arrestment mechanism: three gear splined hub one end are provided with three gear splined hub snap rings, three gear driven gear one end are provided with three gear follower snap rings, main deceleration driving gear one end is provided with main deceleration driving wheel snap ring, two gear driven gear one end are provided with two gear follower snap rings, break deep groove ball bearing one end is provided with break deep groove ball bearing snap ring, braking steel disc one end is provided with steel disc snap ring, the platen the other end is provided with platen snap ring, and tumbler gear one end is provided with reverse wheel snap ring.

In the utility model, in described differential speed type driving mechanism: in differential one axle left end cap, corresponding differential steering one axle place is provided with differential one axle lip-shaped sealed ring and seals; Differential steering left side gear side is provided with differential left gear snap ring and carries out spacing; Differential steering right side gear side is provided with differential right gear snap ring and carries out spacing; Left planetary pinion supporting component is identical with the structure of right planetary pinion supporting component, right planetary pinion supporting component comprises right planetary pinion back shaft, be sleeved on right sliding bearing sleeve one on right planetary pinion back shaft and right planetary pinion fixing frame, right planetary pinion back shaft one end interference is installed in right lateral carrier, the other end is set with right planetary pinion fixing frame, and right planetary pinion fixing frame is for limiting right planetary axial float.

In the utility model, in described left track driving mechanism: actuation gear one end is provided with driving wheel snap ring, support in protheca and be provided with the supporting sleeve lip-shaped sealed ring being positioned at supporting sleeve deep groove ball bearing outer end, supporting sleeve deep groove ball bearing side is provided with supporting sleeve bearing snap ring and carries out spacing.

In the utility model, the first described hubcap, transmission shaft outer end cap, transmission shaft inner end cap, output shaft outer end cap, output shaft inner end cap, the second hubcap, transaxle end cap, shifting shaft end cap, brake axle end cap, break end cap, differential one axle left end cap, differential one axle right end cap, differential jack shaft end cap, differential gear hubcap, live axle end cap are all fastened by bolts on casing.

In the utility model, power transfer path is:

1) power inputs the first axle input through power, drives PTO duplex slippage power shift gear and power input bevel gear to rotate;

2) PTO duplex slippage power shift gear drives PTO duplex power shift gear to rotate, thus drive PTO power transmission shaft to rotate, PTO power transmission shaft drives the main deceleration driving gear of PTO to rotate, the main deceleration driving gear of PTO drives the main reduction driven gear of PTO to rotate, the main reduction driven gear of PTO drives pto＝power take-off to rotate, thus exports a part of power;

Power is passed to power through driven wheel of differential and inputs the second axle and drive it to rotate by power input bevel gear, power through double dynamical input mechanism by power-converting for machinery gear or hydrostatic electrodeless gear be delivered to double dynamical transaxle, double dynamical transaxle drives double dynamical input splined hub, a gear driving gear and two gear driving gears to rotate, double dynamical input splined hub drives three gear driven gears to rotate, one gear driving gear drives a gear driven gear to rotate, and two gear driving gears drive two gear driven gears to rotate;

3) when three gear shift forks are in neutral, one or two gear shift forks move, make one or two gear splined hub keep off driven gear by one or two gear combined covers and to be combined, one gear driven gear drives shifting shaft to rotate, one or two gear shift forks move down, make one or two gear splined hub keep off driven gear by one or two gear combined covers and two to be combined, two gear driven gears drive shifting shaft to rotate;

When one or two gear shift forks are in neutral, three gear shift forks move down, and make three gear splined hub keep off driven gear by three gear combined covers and three and be combined, three gear driven gears drive shifting shaft to rotate;

4) shifting shaft drives main deceleration driving gear to rotate, main deceleration driving gear drives tumbler gear to rotate, and transmission of power drives it to rotate to final gear by tumbler gear, and tumbler gear is by being arranged on the brake on brake axle;

5) final gear drives differential gear axle to rotate, differential gear axle drives left sun gear and right sun gear to rotate respectively, and then drive left planetary pinion and right planetary pinion to rotate, the external gear of left lateral star gear driven left lateral carrier rotates, and then drive left track driving mechanism to rotate, the external gear of right lateral star gear driven right lateral carrier rotates, and then drives right side track driving mechanism to rotate; When the unpowered input of differential steering one axle, because left and right side planetary carrier gear ring is fixed by rightabout steering gear, now differential steering device locking, left and right side planetary pinion equispeed output, when the dynamic input of differential steering one axle, the upper left gear ring of left side planetary gears turns to contrary with the right gear ring on the planetary gears of right side, now between left lateral carrier and right lateral carrier, produces speed difference, thus realizes turning to.

Advantage and beneficial effect:

(1) the utility model adopts three gear speed change and arrestment mechanisms, and can export three speed gears, compact structure, transmission efficiency is high, and gearshift is convenient; The utility model is also provided with break, and this brake structural is little, operates light, and the generation that the utility model is braked or releasing are easily;

(2) oil hydraulic motor connecting differential steering one axle is provided with in the utility model differential speed type driving mechanism, when oil hydraulic motor is to differential steering one axle input power, power transmission is to gear ring, another strand of power inputs from sun gear simultaneously, due to planetary gears transmission principle, fixing sun gear input forms compound motion with the gear ring of counterturn, makes planet carrier export difference and turns to, thus realize turning to, make the utility model steering manipulation strong.

(3) the utility model adopts the scheme that mechanical direct-drive and hydraulic stepless transmission are connected in parallel, the problem that mechanical direct-drive is combined with the electrodeless formula of hydraulic pressure is solved by Change-over knot trap, effectively improve transmission efficiency high, improve the handling of endless-track vehicle.The gear ring clockwise and anticlockwise simultaneously adopting oil hydraulic motor to control driving wheel both sides planetary gears changes traveling and drives pto＝power take-off two ends rotating speed, realization turns to, this steering structure precisely turns to by regulating hydraulic motor rotary speed to realize, even field pivot turn, also conveniently realize remote machine electrohydraulic integration to control, effectively can overcome existing endless-track vehicle traveling cornering drag, the edge of a field turns to problems such as stopping up mud is serious, manipulation difficulty.

In a word, the utility model adopts machinery and the double dynamical input device of hydraulic parallel formula, oil hydraulic motor controls the differential speed type the steering gear of the gear ring clockwise and anticlockwise of driving wheel both sides planetary gears, three quick change latch devices, built-in braking device, can effectively improve endless-track vehicle drive efficiency, manipulation convenience, improve and turn to precision, improve efficient traveling rotating speed matching range, expansion endless-track vehicle purposes, improve driving safety, overcome existing endless-track vehicle transmission efficiency low, traveling cornering drag is large, manipulation difficulty, the edge of a field turns to heap soil or fertilizer over and around the roots mud serious, the problems such as braking device is complicated.

Accompanying drawing explanation

Fig. 1 is the structural representation of preferred embodiment of the present utility model.

Fig. 2 is A-A sectional view in Fig. 1.

Fig. 3 is the structural representation of Fig. 1 medium power input mechanism and power take-off mechanism.

Fig. 4 is the D-D sectional view of Fig. 3.

Fig. 5 is the structural representation of double dynamical input mechanism in Fig. 1.

Fig. 6 is K-K sectional view in Fig. 5.

Fig. 7 is H-H sectional view in Fig. 5.

Fig. 8 is I-I sectional view in Fig. 5.

Fig. 9 is J-J sectional view in Fig. 5.

Figure 10 is the structural representation of three gear speed changes and arrestment mechanism in Fig. 1.

Figure 11 is C-C sectional view in Figure 10.

Figure 12 is D-D sectional view in Figure 10.

Figure 13 is the structural representation of differential speed type driving mechanism in Fig. 1.

Figure 14 is E-E sectional view in Figure 11.

Figure 15 is F-F sectional view in Figure 11.

Figure 16 is the structural representation of left track driving mechanism in Fig. 1.

Embodiment

The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.

Double dynamical input type three see Fig. 1 ~ Fig. 2 keeps off endless-track vehicle speed changer, it comprises casing X, casing X is provided with power input mechanism P, double dynamical input mechanism S, three gear speed change and arrestment mechanism M, differential speed type driving mechanism D, left track driving mechanism Q (L), right side track driving mechanism Q (R), power take-off mechanism T, power input mechanism P is connected with double dynamical input mechanism S and power take-off mechanism T, double dynamical input mechanism S is connected with differential speed type driving mechanism D by three gear speed changes and arrestment mechanism M, differential speed type driving mechanism D and left track driving mechanism Q (L), right side track driving mechanism Q (R) connects.Power inputs through power input mechanism P, a part exports through power take-off mechanism T, another part flows to double dynamical input mechanism S, power take-off mechanism T by transmission of power to external procedure part, double dynamical input mechanism S by three gear speed changes and arrestment mechanism M by transmission of power to differential speed type driving mechanism D, then by differential speed type driving mechanism D power exported respectively and drives left track driving mechanism Q (L) and right side track driving mechanism Q (R).

Shown in Fig. 3 ~ Fig. 4, power input mechanism P comprises power input bevel gear P1, PTO duplex slippage power shift gear P2, power inputs the first axle P3, speed gear selector fork P4, PTO duplex power shift gear P5, PTO power transmission shaft P6, also comprise the first axle thrust bearing P7, first hubcap P8, first Simmer ring P9, first axle thrust bearing snap ring P10, first axle deep groove ball bearing P11, power input wheel sleeve P12, deep groove ball bearing P13 before transmission shaft, deep groove ball bearing P14 in transmission shaft, transmission shaft outer end cap P15, deep groove ball bearing snap ring P16 in transmission shaft, power take-off mechanism T comprises the main deceleration driving gear T3 of pto＝power take-off T1, PTO main reduction driven gear T2, PTO, also comprises deep groove ball bearing T8, output shaft inner end cap T9, output shaft seal ring T10, main reduction driven wheel sleeve T11 in deep groove ball bearing T4, transmission shaft inner end cap T5 after transmission shaft, output shaft outer deep groove ball bearing T6, output shaft outer end cap T7, output shaft.

Power inputs the first axle P3 side and is installed in the first hubcap P8 by the first axle thrust bearing P7, first Simmer ring P9 is installed in the first hubcap P8, seal for inputting the first axle P3 to power, first axle thrust bearing snap ring P10 is hole snap ring, it to be installed in the first hubcap P8 and to be positioned at the side of the first axle thrust bearing P7, for carrying out hole to location to the first axle thrust bearing P7; Power inputs the first axle P3 opposite side and is installed on casing X by the first axle deep groove ball bearing P11, the end that this power inputs the first axle P3 opposite side place is provided with power input bevel gear P1, is provided with power input wheel sleeve P12 between power input bevel gear P1 and the first axle deep groove ball bearing P11; PTO duplex slippage power shift gear P2 is installed between the first axle thrust bearing P7 and the first axle deep groove ball bearing P11, PTO duplex slippage power shift gear P2 is fitted with speed gear selector fork P4.

PTO power transmission shaft P6 one end is arranged on casing X by deep groove ball bearing P14 in deep groove ball bearing P13 before transmission shaft and transmission shaft, before transmission shaft, deep groove ball bearing P13 is installed on casing X, and undertaken spacing by transmission shaft outer end cap P15, in transmission shaft, deep groove ball bearing P14 side is positioned by the shaft shoulder, opposite side is positioned by deep groove ball bearing snap ring P16 in transmission shaft, in transmission shaft, deep groove ball bearing snap ring P16 is axle snap ring, is set with PTO duplex power shift gear P5 before transmission shaft in deep groove ball bearing P13 and transmission shaft between deep groove ball bearing P14; The PTO power transmission shaft P6 the other end is arranged on casing X by deep groove ball bearing T4 after transmission shaft, and is undertaken spacing by transmission shaft inner end cap T5, and the PTO power transmission shaft P6 the other end is also provided with the main deceleration driving gear T3 of PTO.

Pto＝power take-off T1 side is installed on casing X by the outer deep groove ball bearing T6 of output shaft, and is undertaken spacing by output shaft outer end cap T7, pto＝power take-off T1 opposite side is installed on casing X by deep groove ball bearing T8 in output shaft, and undertaken spacing by output shaft inner end cap T9, output shaft seal ring T10 is installed in output shaft outer end cap T7, for sealing pto＝power take-off T1, the main reduction driven gear T2 of PTO is set with between deep groove ball bearing T8 in the outer deep groove ball bearing T6 of output shaft and output shaft, between outer deep groove ball bearing T6 and the PTO main reduction driven gear T2 of output shaft, main reduction driven wheel sleeve T11 is installed, main reduction driven wheel sleeve T11 is used for the axial clearance of motivation of adjustment output shaft T1 and carries out spacing to PTO main reduction driven gear T2.

PTO duplex slippage power shift gear P2 engages with PTO duplex power shift gear P5, and the main reduction driven gear T2 of PTO main deceleration driving gear T3 and PTO engages.

PTO duplex slippage power shift gear P2 inputs on the first axle P3 at power and moves from left to right, high to realize gear, low gear switches, as shown in Figure 3, for low gear, its drive path is described: the right side gear of PTO duplex slippage power shift gear P2 engages with the right side gear of PTO duplex power shift gear P5 → PTO duplex power shift gear P5 drive PTO power transmission shaft P6 rotate → PTO power transmission shaft P6 drives PTO main deceleration driving gear T3 to rotate transferring power → PTO main deceleration driving gear T3 and PTO main reduction driven gear T2 to engage → the main reduction driven gear T2 of PTO drives pto＝power take-off T1 to rotate, this transmission process entirety is gearing down.

Shown in Fig. 5 ~ Fig. 9, double dynamical input mechanism S comprises hydrostatic stepless speed variator S1, hydrostatic stepless speed variator power input shaft S2, machinery gear driving gear S3, power inputs the second axle S4, driven wheel of differential S5, hydrostatic stepless speed variator power output gear S6, hydrostatic stepless speed variator pto＝power take-off S7, selector fork S8, double dynamical combined cover S9, double dynamical input splined hub S10, two gear driving gear S11, double dynamical transaxle S12, one gear driving gear S13, machinery gear driven gear S14, stepless gear driven gear S15, also comprises power output wheel snap ring S16, second axle thrust bearing S17, second hubcap S18, second axle deep groove ball bearing S19, machinery gear driving wheel snap ring S20, driven wheel of differential sleeve S21, transaxle deep groove ball bearing S22, transaxle end cap S23, stepless gear sliding bearing sleeve S24, machinery gear sliding bearing sleeve S25, the tight sleeve S26 of stepless gear, stepless gear follower sleeve S27, machinery gear follower sleeve S28, one or two gear driving wheel sleeve S29, two gear driving wheel snap ring S30.

Hydrostatic stepless speed variator S1 is arranged at outside casing X, and be provided with and stretch to hydrostatic stepless speed variator power input shaft S2 in casing X and hydrostatic stepless speed variator pto＝power take-off S7, on hydrostatic stepless speed variator pto＝power take-off S7, the end stretched in casing X is provided with hydrostatic stepless speed variator power output gear S6, and hydrostatic stepless speed variator power output gear S6 one end is provided with power output wheel snap ring S16.

Power inputs second axle S4 one end and is installed on casing by the second axle thrust bearing S17, and undertaken spacing by the second hubcap S18, power inputs the second axle S4 the other end and is connected with hydrostatic stepless speed variator power input shaft S2, and be installed on casing by the second axle deep groove ball bearing S19, power inputs and the second axle S4 is provided with machinery gear driving gear S3 and driven wheel of differential S5, driven wheel of differential S5 and inputs bevel gear P1 with power and engage; Machinery gear driving gear S3 one end is provided with machinery gear driving wheel snap ring S20, is provided with driven wheel of differential sleeve S21 between driven wheel of differential S5 and the second axle thrust bearing S17.

The mounting structure at double dynamical transaxle S12 two ends is identical, and its one end is installed on casing by transaxle deep groove ball bearing S22, and is undertaken spacing by transaxle end cap S23, double dynamical transaxle S12 is provided with vertically successively stepless gear driven gear S15, double dynamical input splined hub S10, machinery gear driven gear S14, one gear driving gear S13 and two gear driving gear S11, stepless gear driven gear S15 is installed on double dynamical transaxle S12 by stepless gear sliding bearing sleeve S24, machinery gear driven gear S14 is installed on double dynamical transaxle S12 by machinery gear sliding bearing sleeve S25, double dynamical input splined hub S10 is provided with double dynamical combined cover S9, double dynamical combined cover S9 keeps off driven gear S14 with stepless gear driven gear S15 or machinery and is combined under the effect of selector fork S8, double dynamical input splined hub S10 one end keeps off driven gear S14 interference fit with machinery, the other end and stepless gear driven gear S15 Spielpassung, and be provided with the tight sleeve S26 of stepless gear between double dynamical input splined hub S10 and stepless gear driven gear S15, the stepless gear driven gear S15 the other end is provided with stepless gear follower sleeve S27, the machinery gear driven gear S14 the other end is provided with machinery gear follower sleeve S28, be provided with one or two gear driving wheel sleeve S29 between one gear driving gear S13 and two gear driving gear S11, the two gear driving gear S11 the other ends are undertaken spacing by two gear driving wheel snap ring S30.Stepless gear driven gear S15 engages with hydrostatic stepless speed variator power output gear S6, and machinery gear driven gear S14 keeps off driving gear S3 with machinery and engages.

Shown in Figure 10 ~ Figure 12, three gear speed changes and arrestment mechanism M comprise shifting shaft M1, three gear splined hub M2, three gear shift fork M3, three gear combined cover M4, three gear driven gear M5, main deceleration driving gear M6, one gear driven gear M7, one or two gear shift fork M8, one or two gear combined cover M9, one or two gear splined hub M10, two gear driven gear M11, tumbler gear M12, brake axle M17, braking shiifter axle M13, platen M14, brake strip M15, braking steel disc M16, also comprises shifting shaft deep groove ball bearing M18, shifting shaft end cap M19, three gear sliding bearing sleeve M20, two gear sliding bearing sleeve M21, one gear sliding bearing sleeve M22, three gear splined hub snap ring M23, three gear follower snap ring M24, main deceleration driving wheel snap ring M25, main deceleration driving wheel sleeve M26, two gear follower snap ring M27, brake axle deep groove ball bearing M28, brake axle end cap M29, break deep groove ball bearing M30, break end cap M31, break deep groove ball bearing snap ring M32, steel disc snap ring M33, platen snap ring M34, reverse wheel snap ring M35.

The mounting structure at shifting shaft M1 two ends is the same, and its one end is installed on casing by shifting shaft deep groove ball bearing M18, and is provided with shifting shaft end cap M19 and carries out spacing, shifting shaft M1 is provided with vertically successively three gear splined hub M2, three gear driven gear M5, main deceleration driving gear M6, a gear driven gear M7, one or two gear splined hub M10, two gear driven gear M11, three gear splined hub M2 are installed on by internal spline on the external splines of shifting shaft M1, three gear driven gear M5 are installed on shifting shaft M1 by three gear sliding bearing sleeve M20, two gear driven gear M11 are installed on shifting shaft M1 by two gear sliding bearing sleeve M21, and a gear driven gear M7 is installed on shifting shaft M1 by a gear sliding bearing sleeve M22, three gear splined hub M2 one end and three keep off driven gear M5 interference fit, the other end is provided with three gear splined hub snap ring M23 and carries out spacing, the three gear driven gear M5 the other ends are provided with three gear follower snap ring M24 and carry out spacing, main deceleration driving gear M6 one end is provided with main deceleration driving wheel snap ring M25 and carries out spacing, main deceleration driving gear M6 and keeps off between driven gear M7 and is provided with main deceleration driving wheel sleeve M26, one or two gear splined hub M10 are installed on by internal spline on the external splines of shifting shaft M1, one or two gear splined hub M10 are provided with one or two gear combined cover M9, one or two gear combined cover M9 keep off driven gear M7 or two and keep off driven gear M11 and be combined under the effect of one or two gear shift fork M8 with one, two gear driven gear M11 one end are provided with two gear follower snap ring M27.

Three gear driven gear M5 often engage with double dynamical combined cover S19, and a gear driven gear M7 and keeps off driving gear S13 and engages, and two gear driven gear M11 and two keep off driving gear S11 and engage.

Brake axle M17 one end is installed on casing X by brake axle deep groove ball bearing M28, and undertaken spacing by brake axle end cap M29, the other end is installed in break end cap M31 by break deep groove ball bearing M30, break deep groove ball bearing M30 one end is provided with break deep groove ball bearing snap ring M32 and carries out spacing, break end cap M31 is fastened by bolts on casing X, break end cap M31 inwall is provided with six braking steel disc M16, these six braking steel discs are parallel to each other and spaced apart, brake axle M17 corresponding in break end cap M31 is provided with five brake strip M15 by spline, five brake strip M15 are parallel to each other and spaced apart, and each brake strip M15 is all engaged between adjacent two braking steel disc M16, braking steel disc M16 one end is provided with steel disc snap ring M33 and carries out spacing, also be provided with the platen M14 be arranged on brake axle M17, platen M14 is provided with braking shiifter axle M13, braking shiifter axle M13 for control platen M14 and compress or pine from braking steel disc M16, the platen M14 the other end is provided with platen snap ring M34.Brake axle M17 is provided with tumbler gear M12, tumbler gear M12 one end is provided with reverse wheel snap ring M35 and carries out spacing.Tumbler gear M12 engages with main deceleration driving gear M6.

The drive path of double dynamical input mechanism S internally-powered is:

One, power inputs the first axle P3 through power and inputs, and power input bevel gear P1 engage with driven wheel of differential S5, and driven wheel of differential S5 drives power to input the second axle S4 and machinery keeps off driving gear S3 rotation;

Two, power inputs the second axle S4 and drives hydrostatic stepless speed variator power input shaft S2 to rotate, power exports from hydrostatic stepless speed variator pto＝power take-off S7 after hydrostatic stepless speed variator S1 stepless change, and hydrostatic stepless speed variator power output gear S6 engages with stepless gear driven gear S15; Machinery gear driving gear S3 keeps off driven gear S14 with machinery and engages;

Three, power is regulated to be hydrostatic stepless gear input or the input of machinery gear:

1) when regulating power to be hydrostatic stepless gear input, upward sliding selector fork S8, double dynamical combined cover S9 moves, double dynamical combined cover S9 is separately fixed on double dynamical input splined hub S10 and stepless gear driven gear S15, and the bang path of power is: hydrostatic stepless speed variator power output gear S6 → stepless gear driven gear S15 → double dynamical input splined hub S10 → double dynamical transaxle S12.The now exportable infinite variable speed forward gear of speed changer and reverse gear shift.

2) when regulating power to be the input of machinery gear, slide downward selector fork S8, double dynamical combined cover S9 moves down, double dynamical combined cover S9 is separately fixed at double dynamical input splined hub S10 and keeps off on driven gear S14 with machinery, and the bang path of power is: machinery gear driving gear S3 → machinery gear driven gear S14 → double dynamical input splined hub S10 → double dynamical transaxle S12.Now the forward gear exporting a certain speed fixed by speed changer, can not export reverse gear shift, and this gear is mainly used in track-laying vehicle field high-efficient homework.

The drive path of three gear speed changes and arrestment mechanism M internally-powered is:

One, one or two gear gearshifts:

1) change to a gear: one or two gear shift fork M8 move, one or two gear combined cover M9 keep off driven gear M7 tooth of shifting gears simultaneously and are combined with one or two external tooths and keeping off splined hub M10; The bang path of power is: gear driving gear S13 → mono-keeps off gear combined cover M9 → mono-or two, driven gear M7 → mono-or two gear splined hub M10 → shifting shaft M1.

2) change to neutral: one or two gear shift fork M8 stop meta, one or two gear combined cover M9 are only combined with one or two external tooths keeping off splined hub M10, can not transmit any power, change to neutral.

3) change to two gears: one or two gear shift fork M8 move down, one or two gear combined cover M9 keep off driven gear M11 tooth of shifting gears simultaneously and are combined with one or two external tooths and two keeping off splined hub M10; The bang path of power is: two gear driving gear S11 → bis-keep off gear combined cover M9 → mono-or two, driven gear M11 → mono-or two gear splined hub M10 → shifting shaft M1.

Two, three gear gearshifts:

1) change to three gears: three gear shift fork M3 move down, three gear combined cover M4 keep off driven gear M5 tooth of shifting gears simultaneously and are combined with three external tooths and three keeping off splined hub M2; The bang path of power is: double dynamical combined cover S9 → tri-gear driven gear M5 → tri-keep off combined cover M4 → tri-and keep off splined hub M2 → shifting shaft M1.

2) change to neutral: three gear shift fork M3 move, three gear combined cover M4 are only combined with three external tooths keeping off splined hub M2; Any power can not be transmitted, change to neutral.

Three, mutual principle is locked:

By gearshift, only have when one or two gear combined cover M9 are in neutral gear position, just can change to three gears, only have when three gear combined cover M4 are in neutral gear position, one or two gears could be switched.

Shown in Figure 13 ~ Figure 15, differential speed type driving mechanism D comprises differential steering one axle D1, differential steering left side gear D2, differential steering right side gear D3, differential steering intermediate gear D4, differential steering jack shaft D5, final gear D6, differential gear axle D7, right side planetary gears D8, left side planetary gears D9, also comprise the left deep groove ball bearing D10 of differential one axle, differential one axle left end cap D11, differential one axle lip-shaped sealed ring D12, the right deep groove ball bearing D13 of differential one axle, differential one axle right end cap D14, differential left gear snap ring D15, differential right gear snap ring D16, differential jack shaft deep groove ball bearing D17, differential jack shaft end cap D18, differential breast wheel sleeve D19, differential gear axle deep groove ball bearing D20, differential gear hubcap D21, right sliding bearing sleeve one D22, needle bearing D23, right sliding bearing sleeve two D24, left sliding bearing sleeve one D25, needle bearing D26, left sliding bearing sleeve two D27.

Differential steering one axle D1 one end extend out to outside casing X, and be installed on casing X by the left deep groove ball bearing D10 of differential one axle, differential one axle left deep groove ball bearing D10 is undertaken spacing by differential one axle left end cap D11, and in differential one axle left end cap D11, corresponding differential steering one axle D1 place is provided with differential one axle lip-shaped sealed ring D12 and seals; The differential steering one axle D1 the other end is installed on casing X by the right deep groove ball bearing D13 of differential one axle, and is undertaken spacing by differential one axle right end cap D14; Differential steering one axle D1 is provided with differential steering left side gear D2 and differential steering right side gear D3, differential steering left side gear D2 side is provided with differential left gear snap ring D15 and carries out spacing, and differential steering right side gear D3 side is provided with differential right gear snap ring D16 and carries out spacing.

The mounting structure at differential steering jack shaft D5 two ends is the same, and its one end is installed on casing X by differential jack shaft deep groove ball bearing D17, and is undertaken spacing by differential jack shaft end cap D18; Differential steering jack shaft D5 is provided with differential steering intermediate gear D4, differential steering intermediate gear D4 side is provided with differential breast wheel sleeve D19.

The mounting structure at differential gear axle D7 two ends is the same, and its one end is installed on casing X by differential gear axle deep groove ball bearing D20, and is undertaken spacing by differential gear hubcap D21; Position, differential gear axle D7 middle is provided with final gear D6, and the tumbler gear M12 that final gear D6 and three keeps off speed change and arrestment mechanism M engages; Planetary gears D9 is identical with the structure of right side planetary gears D8 in left side, and symmetrical about final gear D6.

Left side planetary gears D9 comprises left sun gear D91, left lateral carrier D92, left lateral star gear D 93, left planetary pinion back shaft D94, left gear ring D95, left planetary pinion fixing frame D96, also comprises left sliding bearing sleeve one D25, needle bearing D26, left sliding bearing sleeve two D27.

Right side planetary gears D8 comprises right sun gear D81, right lateral carrier D82, right lateral star gear D 83, right planetary pinion back shaft D84, right gear ring D85, right planetary pinion fixing frame D86, also comprises right sliding bearing sleeve one D22, needle bearing D23, right sliding bearing sleeve two D24.

Left gear ring D95, left sun gear D91 and left lateral carrier D92 are arranged on differential gear axle D7 successively, left lateral star gear D 93 is installed on left lateral carrier D92 by left planetary pinion supporting component circumference is uniform, engage with the internal gear of left gear ring D95 and left sun gear D91, the external gear of left gear ring D95 engages with differential steering intermediate gear D4 simultaneously; Left planetary pinion supporting component comprises left planetary pinion back shaft D94, be sleeved on left sliding bearing sleeve one D25 on left planetary pinion back shaft D94 and left planetary pinion fixing frame D96, left lateral carrier D92 is installed on differential gear axle D7 by needle bearing D26, and left gear ring D95 is installed on differential gear axle D7 by right sliding bearing sleeve two D27.

Right gear ring D85, right sun gear D81 and right lateral carrier D82 are sleeved on differential gear axle D7 successively, right lateral star gear D 83 is installed on right lateral carrier D82 by right planetary pinion supporting component circumference is uniform, and engage with the internal gear of right gear ring D85 and right sun gear D81, the external gear of right gear ring D85 engages with differential steering intermediate gear D4 simultaneously; Right planetary pinion supporting component comprises right planetary pinion back shaft D84, be sleeved on right sliding bearing sleeve one D22 on right planetary pinion back shaft D84 and right planetary pinion fixing frame D86, right lateral carrier D82 is installed on differential gear axle D7 by needle bearing D23, and right gear ring D85 is installed on differential gear axle D7 by right sliding bearing sleeve two D24.

The working principle of differential speed type driving mechanism D:

Power is imported into by the differential gear axle D7 at final gear D6 and final gear D6 place, is then passed to the right sun gear D81 of both sides, left sun gear D91.Right sun gear D81 is by right lateral star gear D 83 by transmission of power extremely right gear ring D85, and right planetary pinion back shaft D84 is by transmission of power to right lateral carrier D82, and right lateral carrier D82 outer end is provided with right outside gear, the outer outputting power of right outside gear mesh.Left sun gear D91 is by left lateral star gear D 93 by transmission of power extremely left gear ring D95, and left planetary pinion back shaft D94 is by transmission of power to left lateral carrier D92, and left lateral carrier D92 outer end is provided with left outside gear, the outer outputting power of left outside gear mesh.Right gear ring D85 outer ring is provided with external toothing and engages with differential steering intermediate gear D4 respectively, and left gear ring D95 engages with differential steering left side gear D2, constitutes planetary gears and drives the differential steering system turned to hydraulic driving.

Constant speed locking exports: the differential steering left side gear D2 of differential steering one axle D1 engages with the left gear ring D95 on the D9 of left side planetary gears.The differential steering right side gear D3 of differential steering one axle D1 engages with differential steering intermediate gear D4, then engages with the right gear ring D85 on the planetary gears D8 of right side.When the unpowered input of differential steering one axle D1, now from the power of sun gear input, this power divides two-way to export from external toothing and planet carrier respectively, because left and right side planetary carrier gear ring is fixed by rightabout steering gear, now differential steering device locking, left and right side planetary pinion equispeed output.

Differential steering exports: when the dynamic input of differential steering one axle D1, the left gear ring D95 on the D9 of left side planetary gears turns to contrary with the right gear ring D85 on the planetary gears D8 of right side.According to planetary gears transmission principle, fixing sun gear input forms compound motion with the gear ring of counterturn, makes planet carrier export difference and turns to, thus realize turning to.

Shown in Figure 16, left track driving mechanism Q (L) comprises track drive axle Q1, support protheca Q2, support in overlap Q3, actuation gear Q4, also comprise live axle deep groove ball bearing Q5, driving wheel snap ring Q6, live axle end cap Q7, supporting sleeve deep groove ball bearing Q8, supporting sleeve lip-shaped sealed ring Q9, supporting sleeve bearing snap ring Q10.

Track drive axle Q1 one end is installed on casing 11 by live axle deep groove ball bearing Q5, and actuation gear Q4 is installed, actuation gear Q4 end is provided with driving wheel snap ring Q6 and carries out spacing, live axle deep groove ball bearing Q5 is undertaken spacing by live axle end cap Q7, be provided with successively in support outside live axle end cap Q7 and overlap Q3 and supporting protheca Q2, supporting protheca Q2 is arranged on track drive axle Q1 by supporting sleeve deep groove ball bearing Q8, and be provided with supporting sleeve lip-shaped sealed ring Q9 and seal, supporting sleeve deep groove ball bearing Q8 side is provided with supporting sleeve bearing snap ring Q10, the two ends overlapping Q3 in support are connected with supporting protheca Q2 and live axle end cap Q7 respectively, track drive axle Q1 the other end connecting band track traveling gear.The left outside gears meshing of the left lateral carrier D92 outer end of actuation gear Q4 and differential speed type driving mechanism D.

Right side track driving mechanism Q (R) communicates with left track driving mechanism Q (L) structure, and is symmetrical arranged about final gear D6.Differential speed type driving mechanism D connects and drives left track driving mechanism Q (L) and right side track driving mechanism Q (R).

First hubcap P8, transmission shaft outer end cap P15, transmission shaft inner end cap T5, output shaft outer end cap T7, output shaft inner end cap T9, the second hubcap S18, transaxle end cap S23, shifting shaft end cap M19, brake axle end cap M29, break end cap M31, differential one axle left end cap D11, differential one axle right end cap D14, differential jack shaft end cap D18, differential gear hubcap D21, live axle end cap Q7 are fastened by bolts on casing X.

Integral power bang path of the present utility model is:

1) power inputs the first axle P3 through power and inputs, and drives PTO duplex slippage power shift gear P2 and power input bevel gear P1 to rotate;

2) PTO duplex slippage power shift gear P2 drives PTO duplex power shift gear P5 to rotate, thus drive PTO power transmission shaft P6 to rotate, PTO power transmission shaft P6 drives the main deceleration driving gear T3 of PTO to rotate, PTO main deceleration driving gear T3 drives the main reduction driven gear T2 of PTO to rotate, the main reduction driven gear T2 of PTO drives pto＝power take-off T1 to rotate, thus exports a part of power;

Power is passed to power through driven wheel of differential S5 and inputs the second axle S4 and drive it to rotate by power input bevel gear P1, power through double dynamical input mechanism by power-converting for machinery gear or hydrostatic electrodeless gear be delivered to double dynamical transaxle S12, double dynamical transaxle S12 drives double dynamical input splined hub S10, a gear driving gear S13 and two gear driving gear S11 rotates, double dynamical input splined hub S10 drives three gear driven gear M5 to rotate, one gear driving gear S13 drives a gear driven gear M7 to rotate, and two gear driving gear S11 drive two gear driven gear M11 to rotate;

3) when three gear shift fork M3 are in neutral, one or two gear shift fork M8 move, make one or two gear splined hub M10 keep off driven gear M7 by one or two gear combined cover M9 and to be combined, one gear driven gear M7 drives shifting shaft M1 to rotate, one or two gear shift fork M8 move down, make one or two gear splined hub M10 keep off driven gear M11 by one or two gear combined cover M9 and two to be combined, two gear driven gear M11 drive shifting shaft M1 to rotate;

When one or two gear shift fork M8 are in neutral, three gear shift fork M3 move down, and make three gear splined hub M2 keep off driven gear M5 by three gear combined cover M4 and three and be combined, three gear driven gear M5 drive shifting shaft M1 to rotate;

4) shifting shaft M1 drives main deceleration driving gear M6 to rotate, main deceleration driving gear M6 drives tumbler gear M12 to rotate, transmission of power drives it to rotate to final gear D6 by tumbler gear M12, and tumbler gear M12 is by being arranged on the brake on brake axle M17;

5) final gear D6 drives differential gear axle D7 to rotate, differential gear axle D7 drives left sun gear D91 and right sun gear D81 to rotate respectively, and then drive left lateral star gear D 93 and right lateral star gear D 83 to rotate, left lateral star gear D 93 drives the external gear of left lateral carrier to rotate, and then drive left track driving mechanism Q (L) to rotate, the external gear of right lateral star gear driven right lateral carrier rotates, and then drives right side track driving mechanism Q (R) to rotate; When the unpowered input of differential steering one axle D1, because left and right side planetary carrier gear ring is fixed by rightabout steering gear, now differential steering device locking, left and right side planetary pinion equispeed output, when the dynamic input of differential steering one axle D1, left gear ring D95 on the D9 of left side planetary gears turns to contrary with the right gear ring D85 on the planetary gears D8 of right side, now between left lateral carrier and right lateral carrier, produces speed difference, thus realizes turning to.

More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a double dynamical input type three keeps off endless-track vehicle speed changer, comprise casing, it is characterized in that, casing is provided with power input mechanism, double dynamical input mechanism, three gear speed change and arrestment mechanism, differential speed type driving mechanism, left track driving mechanism, right side track driving mechanism, power take-off mechanisms, the concrete linkage structure of each mechanism is as follows:

2. the double dynamical input type three of one according to claim 1 keeps off endless-track vehicle speed changer, it is characterized in that, in described power input mechanism: first axle thrust bearing one end is provided with for carrying out the first spacing axle thrust bearing snap ring to the first hubcap, first axle thrust bearing snap ring is hole snap ring, and in transmission shaft, deep groove ball bearing one end is provided with deep groove ball bearing in transmission shaft; Being provided with the seal ring one sealed for inputting the first axle to power in first hubcap, in described output shaft outer end cap, being provided with the first Simmer ring for sealing pto＝power take-off.

3. the double dynamical input type three of one according to claim 1 keeps off endless-track vehicle speed changer, it is characterized in that, in described double dynamical input mechanism: hydrostatic stepless speed variator power output gear one end is provided with power output wheel snap ring, machinery gear driving gear one end is provided with machinery gear driving wheel snap ring, and the two gear driving gear the other ends are undertaken spacing by two gear driving wheel snap rings.

4. the double dynamical input type three of one according to claim 1 keeps off endless-track vehicle speed changer, it is characterized in that, described three keep off in speed changes and arrestment mechanism: three gear splined hub one end are provided with three gear splined hub snap rings, three gear driven gear one end are provided with three gear follower snap rings, main deceleration driving gear one end is provided with main deceleration driving wheel snap ring, two gear driven gear one end are provided with two gear follower snap rings, break deep groove ball bearing one end is provided with break deep groove ball bearing snap ring, braking steel disc one end is provided with steel disc snap ring, the platen the other end is provided with platen snap ring, tumbler gear one end is provided with reverse wheel snap ring.

5. the double dynamical input type three of one according to claim 1 keeps off endless-track vehicle speed changer, it is characterized in that, in described differential speed type driving mechanism: in differential one axle left end cap, corresponding differential steering one axle place is provided with differential one axle lip-shaped sealed ring and seals; Differential steering left side gear side is provided with differential left gear snap ring and carries out spacing; Differential steering right side gear side is provided with differential right gear snap ring and carries out spacing; Left planetary pinion supporting component is identical with the structure of right planetary pinion supporting component, right planetary pinion supporting component comprises right planetary pinion back shaft, be sleeved on right sliding bearing sleeve one on right planetary pinion back shaft and right planetary pinion fixing frame, right planetary pinion back shaft one end interference is installed in right lateral carrier, the other end is set with right planetary pinion fixing frame, and right planetary pinion fixing frame is for limiting right planetary axial float.

6. the double dynamical input type three of one according to claim 1 keeps off endless-track vehicle speed changer, it is characterized in that, in described left track driving mechanism: actuation gear one end is provided with driving wheel snap ring, support in protheca and be provided with the supporting sleeve lip-shaped sealed ring being positioned at supporting sleeve deep groove ball bearing outer end, supporting sleeve deep groove ball bearing side is provided with supporting sleeve bearing snap ring and carries out spacing.

7. the double dynamical input type three of one according to claim 1 keeps off endless-track vehicle speed changer, it is characterized in that, the first described hubcap, transmission shaft outer end cap, transmission shaft inner end cap, output shaft outer end cap, output shaft inner end cap, the second hubcap, transaxle end cap, shifting shaft end cap, brake axle end cap, break end cap, differential one axle left end cap, differential one axle right end cap, differential jack shaft end cap, differential gear hubcap, live axle end cap are all fastened by bolts on casing.