CN208602319U - A kind of tractor monoblock type transmission system and radial type 4 wheel driven type tractor - Google Patents

Abstract

The utility model relates to a kind of tractor monoblock type transmission system and radial type 4 wheel driven type tractors, including speed changer, Universal drive support, rear driving axle, Universal drive back segment and Universal drive leading portion, Universal drive back segment includes flexible transmission shaft and the Hooke's joint that flexible both ends of the drive shaft is arranged in, and the Hooke's joint for both ends of the drive shaft of stretching is connected with rear driving axle and Universal drive support respectively；Universal drive leading portion include flexible transmission shaft and be arranged in flexible transmission shaft both ends duplex constant velocity cardan joint and Hooke's joint, duplex constant velocity cardan joint and Hooke's joint are connected with transmission output shaft and Universal drive support respectively；Universal drive support is fixed pivot, the underface for being centrally disposed on the connecting pin for connecting vehicle axis of traction and traction seat of duplex constant velocity cardan joint.The utility model realizes that power constant angular velocity is transmitted in steering procedure, and constant speed drive can be realized, effectively improve the transmission system efficiency under the conditions of articulated frame.

Description

A kind of tractor monoblock type transmission system and radial type 4 wheel driven type tractor

Technical field

The utility model belongs to agricultural mechanical field, in particular to a kind of tractor monoblock type transmission system and radial type four Drive type tractor.

Background technique

Frame-steered tractor is mainly used for agricultural transport and/or farming operation, due to mostly using front-wheel drive, due to field The mode of deflection hinge joint realizes steerings, and when forerunner does not need to deflect front-wheel, therefore front driving axle structure is simple, reliable operation, Until being widely applied.But since frame-steered tractor is very multiple in the operating condition of agricultural transport and/or farmland operation It is miscellaneous, transaction capabilities can be further improved using rear wheel drive and/or four-wheel drive, prevent from falling into vehicle.But it is transmitted in power to rear side During, since powerdriven route changes during articulated vehicle turns to, it is difficult to ensure that power is realized when transmitting The failures such as constant angular velocity output, trip stops when going out and turn now to so as to cause frame-steered tractor, and universal joint is easy to damage.Basis is dragged simultaneously Machine drawing under different loads and different road conditions, be such as lightly loaded good road surface, the non-rigid road surface of underloading, fully loaded good road surface, Under the conditions of when being fully loaded with non-rigid road surface etc., different driving methods is needed, such as forerunner, rear-guard, differential 4 wheel driven, differential locking 4 wheel driven Deng.

To sum up, how to provide that a kind of production and application cost is low, transmission efficiency is high, is able to achieve multiple drive modes, And the tractor monoblock type transmission system that conversion is smooth, and the tractor including this tractor transmission system, at ability The technical issues of field technique personnel's urgent need to resolve.

Utility model content

The purpose of the utility model is to provide one kind can that production and application cost is low, can effectively improve dragging for transmission efficiency Machine drawing monoblock type transmission system and 4 wheel driven type tractor including this tractor monoblock type transmission system.

Above-mentioned purpose is to be achieved through the following technical solutions: a kind of tractor monoblock type transmission system, including speed changer, ten thousand To transmission support, rear driving axle, Universal drive back segment and Universal drive leading portion, the rear driving axle and the Universal drive back segment Be connected, institute's Universal drive back segment and Universal drive leading portion by Universal drive support connection, the Universal drive leading portion with Transmission output shaft is connected；Wherein, the Universal drive back segment is by including flexible transmission shaft and being arranged in the flexible transmission The Hooke's joint at the both ends of axis, the Hooke's joint at the both ends of the flexible transmission shaft respectively with rear driving axle and universal Transmission support connection；The Universal drive leading portion includes flexible transmission shaft and the both ends for being separately positioned on the flexible transmission shaft Duplex constant velocity cardan joint and Hooke's joint, the duplex constant velocity cardan joint and Hooke's joint respectively with the speed change Device output shaft is connected with Universal drive support；Universal drive support is fixed pivot, in the duplex constant velocity cardan joint The heart is arranged in the underface of the connecting pin for connecting vehicle axis of traction and traction seat.

The set-up mode of the utility model realizes that power constant angular velocity is transmitted in steering procedure, and constant speed biography can be realized It is dynamic, effectively improve the transmission system efficiency under the conditions of articulated frame.

Further technical solution is that the speed changer includes box assembly, shift assembly, main variable speed assembly, differential shaft Component and preceding driving assembly, the box assembly include at least cabinet, the shift assembly, main variable speed assembly, differential shaft assembly It is fixed on the cabinet with preceding driving assembly, the shift assembly includes main gear shift component and 4 wheel driven shift assembly, institute State main variable speed assembly include input shaft assembly, reverse gear shaft assembly and intermediate shaft assembly, it is described reverse gear shaft assembly include at least reverses gear Axis and the reverse gear being arranged on the reverse gear shaft, the input shaft assembly include at least input shaft and are fixed at described A gear driving gear, the driving gear that reverses gear, two gear driving gear and three gear driving gears on input shaft, the intermediate shaft assembly Including jackshaft, 4 wheel driven driving gear, one reverse gear combined cover and two or three gear combined covers, the jackshaft pass through jackshaft needle roller axis It holds logical equipped with the driven gear that reverses gear, a gear driven gear, second gear driven gear and three gear driven gears, the 4 wheel driven driving gear Spline slide is crossed to be connected on the jackshaft；It is described one gear driving gear, two gear driving gear, three gear driving gears respectively with The one gear driven gear, second gear driven gear and three gear driven gear engagements, driving gear and the tooth that reverses gear of reversing gear It takes turns, the driven gear that reverses gear engagement；The jackshaft by spline be equipped with one reverse gear splined hub and two or three gear splined hubs, described one falls The setting of gear splined hub is being reversed gear between driven gear and a gear driven gear, and two or the three gear splined hub is arranged in second gear driven tooth Between wheel and three gear driven gears, described one reverses gear combined cover and two or three gear combined covers are respectively sleeved at described one and reverse gear splined hub In two or three gear splined hubs, the main gear shift component includes at least a back fork and two or three gear shift forks, and described one reverses gear Shift fork can drive the combined cover that reverses gear to move along described one splined hub of reversing gear and realize that one reverses gear and combined cover and reverses gear driven gear Or one gear driven gear engagement, it is described two or three gear shift fork can drive two or three gear combined covers along it is described two or three gear splined hub move simultaneously It realizes that two or three gear combined covers reverse gear with two driven gear or three to keep off driven gears and engage；The differential shaft assembly includes rear axle group Part, preceding shaft assembly and differential assembly, the rear axle assemblies include at least rear axle, rear axle driven gear and rear axle differential gear；Institute Shaft assembly includes at least front axle, front axle gear and front axle differential gear before stating；It is driven that the differential assembly includes at least differential mechanism Gear, planetary gear shaft, planet wheel carrier, planetary gear thrust axle sleeve, planetary gear, planet wheel carrier axle sleeve, planet Gear bush and thrust axle sleeve；The front axle is connected with rear axle by front axle needle bearing, and the differential mechanism driven gear is fixed On the planet wheel carrier, the planet wheel carrier is mounted on the rear axle by planet wheel carrier axle sleeve and can It is rotated along rear axle, the rear axle differential gear and rear axle driven gear are arranged on the rear axle, rear axle driven gear position In the outside of the rear axle differential gear, the front axle gear, front axle differential gear are arranged on the front axle, the front axle tooth Wheel is located at the outside of the front axle differential gear, the planet wheel carrier and the rear axle differential gear, front axle differential gear Between be respectively equipped with thrust axle sleeve, the thrust axle sleeve is respectively sleeved on the front axle and rear axle, the planet wheel carrier, Rear axle differential gear, front axle differential gear are in contact with the thrust axle sleeve；The planet wheel carrier is equipped with multiple planets Gear shaft, the planetary gear shaft are uniformly arranged along the circumferential direction of the differential mechanism driven gear and pass through differential mechanism driven gear and limit Position, the planetary gear is set in the planetary gear shaft by the planetary gear shaft, the planet wheel carrier and Planetary gear thrust axle sleeve is equipped between the planetary gear, the planetary gear thrust axle sleeve is set in the planetary gear shaft On, the planet wheel carrier, planetary gear are in contact with the planetary gear thrust axle sleeve；The planetary gear two sides point It is not engaged with front axle differential gear and rear axle differential gear and forms differential transmission systems；The 4 wheel driven shift assembly includes at least 4 wheel driven shift fork, the 4 wheel driven shift fork are connected with the 4 wheel driven driving gear, and the 4 wheel driven shift fork, which can drive, described states 4 wheel driven actively Gear slides axially along the jackshaft, and can realize that the 4 wheel driven driving gear is engaged with front axle gear, or and differential mechanism Driven gear engagement, or engaged simultaneously with rear axle driven gear and differential mechanism driven gear, or engaged with rear axle driven gear； The precursor assemblies include at least drive bevel gear, left half axle, left half axle gear, forerunner's differential carrier, driven wheel of differential, forerunner Planetary gear shaft, forerunner's planetary gear, forerunner's planet wheel carrier, right axle shaft gear and right axle shaft, the drive bevel gear are logical It crosses spline to be fixedly connected with the front axle, the driven wheel of differential is fixed on forerunner's differential mechanism by driven wheel of differential bolt It is engaged on shell and with the drive bevel gear；Forerunner's planetary gear described in multiple groups is provided on forerunner's planet wheel carrier Axis, forerunner's planetary gear shaft are uniformly arranged along the circumferential direction of the driven wheel of differential, and forerunner's planetary gear is arranged in institute It states in forerunner's planetary gear shaft and is freely rotatable, forerunner's planet wheel carrier is connected with forerunner's differential carrier, institute It states left half axle and right axle shaft and passes through spline gear respectively and be sleeved in left half axle gear and right axle shaft gear, forerunner's planet tooth It is engaged respectively with the left half axle gear and right axle shaft gear and forms differential transmission systems in the two sides of wheel.

During concrete application, external impetus is transferred to input shaft and receives power and drive gear a driving gear, master of reversing gear Moving gear, two gear driving gear and three gear driving gear rotations, four drive one engaged to keep off driven gear, reverse gear respectively Driven gear, second gear driven gear and three gear driven gear rotations, back fork control one is reversed gear, and combined cover is mobile, and realization is fallen Gear combined cover with reverse gear driven gear or a gear driven gear engages, jackshaft passes through 4 wheel driven driving gear to differential shaft assembly Output is reversed gear or a gear, and two or the three gear fork controls two or three keep off combined cover and move along two or the three gear splined hub and realize two or three Gear combined cover reverses gear driven gear with two or three gear driven gears engage, and jackshaft passes through 4 wheel driven driving gear to differential shaft group Part exports second gear or three gears.

The 4 wheel driven shift fork is connected with the 4 wheel driven driving gear, and the 4 wheel driven shift fork, which can drive, described states 4 wheel driven driving tooth Take turns sliding axially along the jackshaft, and can realize that the 4 wheel driven driving gear is engaged with front axle gear, or and differential mechanism from Moving gear engagement, or engaged simultaneously with rear axle driven gear and differential mechanism driven gear, or engaged with rear axle driven gear, it is real Existing different location power transmission.At front end forerunner position, 4 wheel driven driving gear is only engaged with front axle gear 4 wheel driven shift fork, this When, it is free to rotate due to the unpowered transmission of planet wheel carrier, independent forerunner cannot be in rear-guard output power, system State；When forerunner, the drive bevel gear on front axle is engaged with the driven wheel of differential of bevel gear shaft component imparts power to forerunner Power is transferred to right drive axle assemblies and left drive axle assemblies by gear member differential assembly by component, the bevel gear shaft component.

At intermediate differential 4 wheel driven position, 4 wheel driven driving gear is only engaged with differential mechanism driven gear 4 wheel driven shift fork, power By planet wheel carrier, it is transferred to planetary gear shaft, then is transferred to planetary gear, front axle is transferred to after differential with after Axis realizes differential 4 wheel driven.

4 wheel driven shift fork at intermediate differential locking 4 wheel driven position, 4 wheel driven driving gear and rear axle driven gear and differential mechanism from Moving gear engages simultaneously, and 4 wheel driven driving gear engages simultaneously with rear axle driven gear and differential mechanism driven gear, planetary gear shaft Frame is identical with the revolving speed of rear-guard, front and back indifferential, is in differential locking 4 wheel driven state.

At most rear side rear-guard position, 4 wheel driven driving gear is only engaged with rear axle driven gear 4 wheel driven shift fork, drives rear axle, Realize independent rear-guard.At this point, due to the unpowered transmission of planet wheel carrier, it is free to rotate, cannot be to rear-guard output power System is in independent forerunner's state.

The utility model is simplified and has been strengthened to differential assembly, specific: to simplify differential carrier, traditional difference first Fast device, axle shaft gear, planetary gear, planetary gear shaft are all mounted on differential mechanism shell, and shell both ends are fixed on cabinet.This Differential carrier is replaced with planet wheel carrier, and is sleeved on rear axle by axle sleeve by the differential assembly of utility model, with pushing away Power axle sleeve positioning, while realizing that structure simplifies, moreover it is possible to rear axle driven gear is installed, and passes through sliding power input gear, Realize the switching of different rear-guards, differential 4 wheel driven, differential locking 4 wheel driven；Next enhances planetary gear, since differential mechanism is in height Planetary gear mounting condition is also strengthened although between centers rotational speed difference is small in fast end, in planetary gear inner end and outside point It is not mounted with axle sleeve and thrust axle sleeve, reduces the frictional force of planetary gear and planet wheel carrier and planetary gear shaft.

The utility model performance is stablized, safe and reliable, compact-sized, it can be achieved that the haulage vehicle of installing the utility model exists Underloading good road surface realizes rear wheel drive when driving, and realizes differential when driving on the non-rigid road surface of underloading or fully loaded good road surface 4 wheel driven realizes differential locking 4 wheel driven when being fully loaded with non-rigid road surface, is conducive to raising tractor and is engaged in field transhipment and road road transport Defeated driving capability prevents tyre slip or sunken vehicle, meets the needs of various road conditions different driving mode.

Further technical solution is that the rear axle assemblies further include rear axle bolt of cover, rear Simmer ring, rear axle card Ring, rear axle angular contact bearing and rear hubcap, the rear axle driven gear is by spline installation with rear axis connection and by described Rear axle snap ring and rear axle axis rank limit, and described rear axle one end passes through rear axle by front axle needle bearing and preceding axis connection, the other end Angular contact bearing is fixedly connected with the rear hubcap, and the rear hubcap is fixedly connected on the case by rear axle bolt of cover On body.

Further technical solution is that the differential mechanism driven gear is fixed on planetary gear shaft by driven gear bolt Frame, the preceding shaft assembly further include preceding shaft retaining ring, front axle snap ring and front axle deep groove ball bearing, described front axle one end and the rear axle Be connected, the other end is fixed on cabinet by front axle deep groove ball bearing, the preceding shaft retaining ring and front axle snap ring be socketed in it is described before On axis.

Further technical solution is that the differential shaft assembly replaces between centers driving assembly, the between centers driving assembly Including preceding shaft assembly and rear axle assemblies, the rear axle assemblies include at least rear axle and rear axle gear, before the preceding shaft assembly includes Shaft gear and front axle, the front axle are connected with rear axle by needle bearing, and the front axle gear and rear axle gear pass through flower respectively Key is sleeved on front axle and rear axle, and the 4 wheel driven shift fork can drive the 4 wheel driven driving gear of stating to slide along the axial direction of the jackshaft It is dynamic, and can realize that the 4 wheel driven driving gear is engaged with front axle gear, or engage simultaneously with front axle gear and rear axle gear, or It is engaged with rear axle gear；The drive bevel gear is fixedly connected by spline with the front axle, the driven wheel of differential by from Dynamic bevel gear bolt is fixed on forerunner's differential carrier and engages with the drive bevel gear.

Jackshaft drive pinion at front end forerunner position, jackshaft drive pinion only in conjunction with novel front axle gear, Realize forerunner；Novel jackshaft drive pinion at intermediate 4 wheel driven position, jackshaft drive pinion both in conjunction with front axle gear or In conjunction with rear axle gear, 4 wheel driven is realized；Jackshaft drive pinion at rearmost end rear-guard position, jackshaft drive pinion only with it is rear Shaft gear combines, and realizes rear-guard.

Further technical solution is divided between forerunner's differential carrier and the left half axle gear, right axle shaft gear Not She You semiaxis thrust bearing, the semiaxis thrust bearing is respectively sleeved on the left half axle and right axle shaft, and the forerunner is poor Fast device shell, left half axle gear, right axle shaft gear are in contact with the semiaxis thrust bearing；Forerunner's differential carrier and the row Planetary gear thrust bearing is equipped between star gear, the planetary gear thrust bearing is set in the planetary gear shaft, institute State forerunner's differential carrier, planetary gear is in contact with the planetary gear thrust bearing；The left half axle and right axle shaft cover respectively It is located in semiaxis angular contact bearing, the semiaxis angular contact bearing is connect by bearing positioning bolt with cabinet, and the bearing is fixed Half Simmer ring is equipped between position bolt and institute left half axle and right axle shaft.

When equispeed output, forerunner's planetary gear revolves under the action of driving force around forerunner's differential carrier, forerunner's planet Gear does not surround forerunner's planetary gear shaft rotation, at this time left half axle and right axle shaft equispeed output.

When differential exports, forerunner's planetary gear both revolved around forerunner's differential carrier under the action of driving force, was still around Forerunner's planetary gear shaft rotation, at this time left half axle and the output of right axle shaft differential.

Power transmission route: drive bevel gear to driven wheel of differential, until forerunner's differential carrier, until forerunner's planetary gear shaft, To forerunner's planetary gear, it is then transferred to left half axle and right axle shaft respectively.

Further technical solution is that forerunner's differential carrier is body formula hollow ball shape or split hollow ball shape, institute Forerunner's differential carrier is stated by bolt or rivet interlacement into a set of entirety.

Further technical solution is, the main gear shift component further include a back fork axis, two or three gear shift fork axles, Main transformer quick change block seat, main shift lever and main transformer quick change block seat bolt, the 4 wheel driven shift assembly further include 4 wheel driven shift fork axle, 4 wheel driven Shift seat bolt, 4 wheel driven device shift seat and 4 wheel driven gear lever, the 4 wheel driven device shift seat and main transformer quick change block seat pass through four respectively It drives shift seat bolt and main transformer quick change block seat bolt is fixed on the cabinet, the 4 wheel driven gear lever and main shift lever are solid respectively It is scheduled on the 4 wheel driven device shift seat and main transformer quick change block seat, the back fork axis, two or three gear shift fork axles and the main transformer Quick change bar is connected, and the 4 wheel driven shift fork axle is connected with the 4 wheel driven gear lever, and the 4 wheel driven shift fork, two or three gear shift forks and one fall Gear, which is dialled, to be separately positioned in the 4 wheel driven shift fork axle, a back fork axis and two or three gear shift fork axles.

Further technical solution is, the input shaft assembly further include input shaft angular contact bearing, input shaft rear end cap, Input shaft drive end bearing bracket, input Simmer ring, input shaft end bonnet bolt, the both ends of the input shaft pass through input shaft angular contact bearing It is connect respectively with the input shaft rear end cap and input shaft drive end bearing bracket, the input shaft rear end cap and input shaft drive end bearing bracket pass through defeated Enter shaft end bonnet bolt to be fixed on the cabinet, input Simmer ring is equipped in at least described input shaft drive end bearing bracket.

Further technical solution is that the shaft assembly that reverses gear further includes reverse gear shaft snap ring, reverse gear shaft thrust bearing and falls Gear shaft needle bearing.

Further technical solution is, before the intermediate shaft assembly further includes jackshaft snap ring, intermediate shaft retaining ring, jackshaft End cap, jackshaft angular contact bearing, intermediate hubcap locking plate, jackshaft bolt of cover and jackshaft rear end cap, the jackshaft It is connected by jackshaft angular contact bearing with jackshaft drive end bearing bracket and jackshaft rear end cap, the jackshaft drive end bearing bracket and jackshaft Rear end cap is fixed on cabinet by jackshaft bolt of cover, and at least described jackshaft drive end bearing bracket is equipped with intermediate hubcap locking plate, The jackshaft snap ring, jackshaft retaining ring are socketed on the jackshaft.

Further technical solution is that box assembly further includes bell housing, case lid, ventilation bolt, box body bolt, drains the oil Bolt, differential cover crab bolt and differential mechanism cover board, the ventilation bolt are arranged on the cabinet, the case lid and differential mechanism Cover board is fixed on the cabinet by the box body bolt and differential cover crab bolt respectively, the bell housing and the case Body is fixedly connected.

In order to achieve the above objectives, the utility model also provides a kind of radial type 4 wheel driven type tractor, including engine, driving Room, container, vehicle frame, driving system and any of the above-described tractor monoblock type transmission system, the vehicle frame include traction Seat, connecting pin, axis of traction and rack, the traction seat are mounted on speed changer, and the axis of traction is connected with rack, the traction Axis connect with traction seat and is formed articulated frame, the engine, driver's cabin, speed changer and traction seat by the connecting pin Constitute front frame, the axis of traction and rack constitute Rear frame, front frame connected by connecting pin with Rear frame it is integral, it is described The point of rotation that articulated frame turns to is the midpoint of the duplex constant velocity cardan joint.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.

Fig. 1 is the structural schematic diagram of radial type 4 wheel driven type tractor involved in a kind of embodiment of the utility model；

Fig. 2 is the structural schematic diagram of tractor monoblock type transmission system involved in a kind of embodiment of the utility model；

Fig. 3 is the outline drawing of gearbox involved in a kind of embodiment of the utility model；

Fig. 4 is the vertical profile figure of gearbox involved in Fig. 3；

Fig. 5 is the sectional view along the face H-H of gearbox involved in Fig. 4；

Fig. 6 is the input shaft front-end architecture schematic diagram of gearbox involved in Fig. 4；

Fig. 7 is the structural schematic diagram of main variable speed assembly involved in a kind of embodiment of the utility model；

Fig. 8 is the structural schematic diagram of differential shaft assembly involved in a kind of embodiment of the utility model；

Fig. 9 is the structural schematic diagram of preceding driving assembly involved in a kind of embodiment of the utility model；

Figure 10 is the independent forerunner's schematic diagram of gearbox involved in a kind of embodiment of the utility model；

Figure 11 is gearbox differential 4 wheel driven schematic diagram involved in a kind of embodiment of the utility model；

Figure 12 is gearbox differential locking 4 wheel driven schematic diagram involved in a kind of embodiment of the utility model；

Figure 13 is the independent rear-guard schematic diagram of gearbox involved in a kind of embodiment of the utility model；

Figure 14 is gearbox driving method structural schematic diagram involved by the utility model another embodiment.

In figure:

1 engine, 2 driver's cabin, 3 transmission system

4 container, 5 vehicle frame, 6 driving system

The support of 31 speed changer, 32 duplex constant velocity cardan joint, 33 Universal drive

34 Hooke's joint, 35 rear driving axle, 36 Universal drive back segment

37 flexible 38 Universal drive leading portion of transmission shaft, 51 traction seats

52 connecting pin, 53 axis of traction, 54 rack

The main variable speed assembly of A box assembly B shift assembly C

Driving assembly A1 bell housing before D differential shaft assembly E

A2 case lid A3 ventilation bolt A4 box body bolt

A5 cabinet A6 oil discharge screw A7 differential cover crab bolt

The main gear shift component B2 pair gear shift component of A8 differential mechanism cover board B1

Mono- back fork axis B12 bis- or three of B3 4 wheel driven shift assembly B11 keeps off shift fork axle

14 main transformer quick change block seat B15 main shift lever of B13 main transformer quick change block seat bolt B

Mono- back fork B17 bis- or three of B16 keeps off shift fork B21 pair gear shift fork

B21 4 wheel driven bar B22 4 wheel driven shift seat B23 4 wheel driven shift seat bolt

B24 4 wheel driven shift fork axle B25 4 wheel driven shift fork C1 inputs shaft assembly

C2 reverses gear shaft assembly C3 intermediate shaft assembly C11 input shaft

C12 input shaft angular contact bearing C13 tri- keeps off driving gear C14 two gear driving gear

C15 mono- keeps off driving gear C16 and reverses gear driving gear C17 input shaft rear end cap

C18 input shaft drive end bearing bracket C19 inputs Simmer ring C110 input shaft end bonnet bolt

C21 reverse gear shaft snap ring C22 reverse gear shaft thrust bearing C23 reverse gear

C24 reverse gear axis runner axle bearing C25 reverse gear shaft C31 jackshaft

Shaft retaining ring C34 jackshaft needle bearing among C32 jackshaft snap ring C33

The C35 splined hub C37 mono- that reverses gear of driven gear C36 mono- that reverses gear reverses gear combined cover

C38 mono- keeps off driven gear C39 second gear driven gear C310 bis- or three and keeps off combined cover

C311 bis- or three keeps off splined hub C312 tri- and keeps off driven gear C313 jackshaft drive end bearing bracket

Hubcap locking plate C316 jackshaft bolt of cover among C314 jackshaft angular contact bearing C315

C317 4 wheel driven driving gear C318 jackshaft rear end cap

Shaft assembly D3 differential assembly before D1 rear axle assemblies D2

Simmer ring after D11 rear axle driven gear D12 rear axle bolt of cover D13

D14 rear axle D15 rear axle snap ring D16 rear axle angular contact bearing

Hubcap D18 rear axle differential gear D21 front axle after D17

Shaft retaining ring before D22 front axle needle bearing D23 front axle deep groove ball bearing D24

D25 front axle gear D26 front axle differential gear D31 driven gear bolt

D32 differential mechanism driven gear D33 planetary gear shaft D34 planetary gear

D35 planet wheel carrier D36 planet wheel carrier axle sleeve D37 planetary gear thrust axle sleeve

D38 planetary gear axle sleeve D39 differential carrier internal axle sleeve E15 right axle shaft gear

E1 drive bevel gear E2 semiaxis angular contact bearing E16 right axle shaft

Half Simmer ring E4 left half axle E5 bearing positioning bolt of E3

E6 left half axle gear E7 forerunner's differential carrier E8 semiaxis thrust bearing

E9 driven wheel of differential bolt E10 driven wheel of differential E11 forerunner's planetary gear shaft

E12 planetary gear E13 planetary gear thrust bearing E14 forerunner's planet wheel carrier

DB2 rear axle gear DB3 snap ring

Specific embodiment

The utility model is described in detail with reference to the accompanying drawing, the description of this part be only it is exemplary and explanatory, There should not be any restriction effect to the protection scope of the utility model.In addition, those skilled in the art's retouching according to this document It states, the corresponding combination can be carried out to the feature in embodiment in this document and in different embodiments.

The utility model embodiment is as follows, referring to Figures 1 and 2, a kind of tractor monoblock type transmission system, including speed changer 31, Universal drive support 33, rear driving axle 3535, Universal drive back segment 3636 and Universal drive leading portion 38, the rear driving axle 3535 are connected with the Universal drive back segment 3636, and institute's Universal drive back segment 3636 and Universal drive leading portion 38 pass through described universal Transmission support 33 connects, and the Universal drive leading portion 38 is connected with 31 output shaft of speed changer；Wherein, the Universal drive back segment 3636 by the Hooke's joint 3434 including flexible transmission shaft 37 and the both ends that the flexible transmission shaft 37 is arranged in, described The Hooke's joint 3434 at the both ends of flexible transmission shaft 37 is connect with rear driving axle 3535 and Universal drive support 33 respectively； The Universal drive leading portion 38 includes the duplex at flexible transmission shaft 37 and the both ends for being separately positioned on the flexible transmission shaft 37 Constant velocity cardan joint 32 and Hooke's joint 3434, the duplex constant velocity cardan joint 32 and Hooke's joint 3434 respectively with 31 output shaft of speed changer is connected with Universal drive support 33；The Universal drive support 33 is fixed pivot, the duplex The underface for being centrally disposed on the connecting pin 52 for connecting vehicle axis of traction 53 and traction seat 51 of constant velocity cardan joint 32.

The set-up mode of the utility model realizes that power constant angular velocity is transmitted in steering procedure, and constant speed biography can be realized It is dynamic, effectively improve 3 efficiency of transmission system under the conditions of articulated frame 5.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 3~13, the speed changer 31 includes Box assembly A, shift assembly B, main variable speed assembly C, differential shaft assembly D and preceding driving assembly E, the box assembly A are at least wrapped Cabinet A5 is included, the shift assembly B, main variable speed assembly C, differential shaft assembly D and preceding driving assembly E are fixed on the cabinet A5 On, the shift assembly B includes main gear shift component B1 and 4 wheel driven shift assembly B2, the main variable speed assembly C include input Shaft assembly C1, reverse gear shaft assembly C2 and intermediate shaft assembly C3, and the shaft assembly C2 that reverses gear includes at least reverse gear shaft C25 and setting exists Reverse gear C23, the input shaft assembly C1 on the reverse gear shaft C25 including at least input shaft C11 and are fixed at institute State a gear driving gear C15, the driving gear C16 that reverses gear, the gear driving gear of two gear driving gear C14 and three on input shaft C11 C13, the intermediate shaft assembly C3 include jackshaft C31,4 wheel driven driving gear C317, one reverse gear combined cover C37 and two or three gear knot Trap C310, the jackshaft C31 are equipped with the driven gear C35 that reverses gear, a gear driven gear by jackshaft needle bearing C34 C38, second gear driven gear C39 and three keep off driven gear C312, and the 4 wheel driven driving gear C317 is connected to by spline slide On the jackshaft C31；It is described one gear driving gear C15, two gear driving gear C14, three gear driving gear C13 respectively with it is described One gear driven gear C38, second gear driven gear C39 and three gear driven gear C312 engagement, it is described reverse gear driving gear C16 with The reverse gear C23, the driven gear C35 that reverses gear engagement；The jackshaft C31 is equipped with one by spline and reverses gear splined hub C36 With two or three gear splined hub C311, described one reverses gear splined hub C36 setting in the gear of the driven gear C35 and one driven gear C38 that reverses gear Between, between the gear of second gear driven gear C39 and three driven gear C312, described one is fallen for two or the three gear splined hub C311 setting Gear combined cover C37 and two or three gear combined cover C310 be respectively sleeved at described one reverse gear splined hub C36 and two or three gear splined hub C311 On, the main gear shift component B1 includes at least the gear of a back fork B16 and two or three shift fork B17, the back fork B16 Can drive one reverse gear combined cover C37 along described one reverse gear splined hub C36 move and realize one reverse gear combined cover C37 with reverse gear it is driven The engagement of gear C 35 or a gear driven gear C38, two or the three gear shift fork B17 can drive two or three gear combined cover C310 along described Two or three gear splined hub C311 are mobile and realize that two or three gear combined cover C310 and the two driven gear C35 or three that reverses gear keeps off driven gear The engagement of C312；The differential shaft assembly D includes rear axle assemblies D1, preceding shaft assembly D2 and differential assembly D3, the rear axle assemblies D1 includes at least rear axle D14, rear axle driven gear D11 and rear axle differential gear D18；The preceding shaft assembly D2 includes at least front axle D21, front axle gear D25 and front axle differential gear D26；The differential assembly D3 includes at least differential mechanism driven gear D32, planet Gear shaft D33, planet wheel carrier D35, planetary gear thrust axle sleeve D37, planetary gear D34, planet wheel carrier axle sleeve D36, planetary gear axle sleeve D38 and thrust axle sleeve；The front axle D21 is connected with rear axle D14 by front axle needle bearing D22, institute It states differential mechanism driven gear D32 to be fixed on the planet wheel carrier D35, the planet wheel carrier D35 passes through planet tooth Axle stand axle sleeve D36 is mounted on the rear axle D14 and can rotate along rear axle D14, the rear axle differential gear D18 and rear axle from Moving gear D11 is arranged on the rear axle D14, and the rear axle driven gear D11 is located at the outer of the rear axle differential gear D18 Side, the front axle gear D25, front axle differential gear D26 are arranged on the front axle D21, and the front axle gear D25 is located at institute State the outside of front axle differential gear D26, the planet wheel carrier D35 and the rear axle differential gear D18, front axle differential gear Thrust axle sleeve is respectively equipped between D26, the thrust axle sleeve is respectively sleeved on the front axle D21 and rear axle D14, the row Star gear pedestal D35, rear axle differential gear D18, front axle differential gear D26 are in contact with the thrust axle sleeve；The planet tooth Axle stand D35 is equipped with multiple planetary gear shaft D33, and the planetary gear shaft D33 is along the differential mechanism driven gear D32's It is circumferentially uniformly arranged and is limited by differential mechanism driven gear D32, the planetary gear D34 passes through the planetary gear axle sleeve D38 is arranged on the planetary gear shaft D33, and planet is equipped between the planet wheel carrier D35 and the planetary gear D34 Gear thrust axle sleeve D37, the planetary gear thrust axle sleeve D37 are set on the planetary gear shaft D33, the planetary gear Pedestal D35, planetary gear D34 are in contact with the planetary gear thrust axle sleeve D37；Distinguish the two sides of the planetary gear D34 It is engaged with front axle differential gear D26 and rear axle differential gear D18 and forms differential transmission systems 3；The 4 wheel driven shift assembly B2 Including at least 4 wheel driven shift fork B25, the 4 wheel driven shift fork B25 is connected with the 4 wheel driven driving gear C317, the 4 wheel driven shift fork B25 states 4 wheel driven driving gear C317 sliding axially along the jackshaft C31 described in can driving, and can realize the 4 wheel driven master Moving gear C317 is engaged with front axle gear D25, or is engaged with differential mechanism driven gear D32, or simultaneously with rear axle driven gear D11 And differential mechanism driven gear D32 engagement, or engaged with rear axle driven gear D11；The precursor assemblies include at least initiative taper Gear E1, left half axle E4, left half axle gear E6, forerunner's differential carrier E7, driven wheel of differential E10, forerunner's planetary gear shaft E11, Forerunner's planetary gear E12, forerunner's planet wheel carrier E14, right axle shaft gear E15 and right axle shaft E16, the drive bevel gear E1 It is fixedly connected by spline with the front axle D21, the driven wheel of differential E10 is fixed on by driven wheel of differential E10 bolt E9 It is engaged on forerunner's differential carrier E7 and with the drive bevel gear E1；It is provided on forerunner's planet wheel carrier E14 Forerunner's planetary gear shaft E11 described in multiple groups, forerunner's planetary gear shaft E11 are along the circumferential uniform of the driven wheel of differential E10 Setting, forerunner's planetary gear E12 are arranged on forerunner's planetary gear shaft E11 and are freely rotatable, forerunner's row Star gear pedestal E14 is connected with forerunner's differential carrier E7, and the left half axle E4 and right axle shaft E16 pass through spline gear respectively Be sleeved in left half axle gear E6 and right axle shaft gear E15, the two sides of forerunner's planetary gear E12 respectively with the left half axle Gear E6 and right axle shaft gear E15 are engaged and are formed differential transmission systems 3.

During concrete application, such as Fig. 4~9, external impetus is transferred to input shaft C11 and receives power and drive a gear actively Gear C 15, the driving gear C16 that reverses gear, two gear driving gear C14 and three gear driving gear C13 rotation, four respectively drive with Its gear driven gear C38 engaged, the driven gear C35 that reverses gear, the gear of second gear driven gear C39 and three driven gear C312 turn Dynamic, the combined cover C37 that reverses gear of back fork B16 control one is mobile, and realization is reversed gear combined cover and the driven gear C35 or one that reverses gear The engagement of driven gear C38 is kept off, jackshaft C31 is reversed gear by 4 wheel driven driving gear C317 to differential shaft assembly D output or a gear, Two or three gear shift fork B17 control, two or the three gear combined cover C310 is moved along two or the three gear splined hub C311 and is realized two or three gear knots Trap C310 is engaged with two gear of the driven gear C35 or three driven gear C312 that reverse gear, and jackshaft C31 passes through 4 wheel driven driving tooth It takes turns C317 and exports second gear or three gears to differential shaft assembly D.

The 4 wheel driven shift fork B25 is connected with the 4 wheel driven driving gear C317, and the 4 wheel driven shift fork B25 can drive described state 4 wheel driven driving gear C317 slides axially along the jackshaft C31's, and can realize the 4 wheel driven driving gear C317 and front axle Gear D 25 engages, or engages with differential mechanism driven gear D32, or simultaneously with rear axle driven gear D11 and differential mechanism driven tooth D32 engagement is taken turns, or is engaged with rear axle driven gear D11, realizes different location power transmission.As shown in Figure 10,4 wheel driven shift fork At front end forerunner position, 4 wheel driven driving gear C317 is only engaged with front axle gear D25 B25, at this point, due to planetary gear shaft Transmission that frame D35 is unpowered, it is free to rotate, independent forerunner's state cannot be in rear-guard output power, system；It is preceding when forerunner Drive bevel gear E1 on axis D21 is engaged with the driven wheel of differential E10 of bevel gear shaft component imparts power to precursor assemblies, Power is transferred to right drive axle assemblies and left drive axle assemblies by gear member differential assembly D3 by the bevel gear shaft component.

As shown in figure 11,4 wheel driven shift fork B25 is at intermediate differential 4 wheel driven position, 4 wheel driven driving gear C317 only with differential Device driven gear D32 engagement, power pass through planet wheel carrier D35, are transferred to planetary gear shaft D33, then be transferred to planet tooth D34 is taken turns, front axle D21 and rear axle D14 are transferred to after differential, realizes differential 4 wheel driven.

As shown in figure 12, for 4 wheel driven shift fork B25 at intermediate differential locking 4 wheel driven position, 4 wheel driven driving gear C317 is with after Axis driven gear D11 and differential mechanism driven gear D32 are engaged simultaneously, 4 wheel driven driving gear C317 and rear axle driven gear D11 and Differential mechanism driven gear D32 is engaged simultaneously, and planet wheel carrier D35 is identical with the revolving speed of rear-guard, front and back indifferential, is in differential Locking 4 wheel driven state.

As shown in figure 13, for 4 wheel driven shift fork B25 at most rear side rear-guard position, 4 wheel driven driving gear C317 is only driven with rear axle Gear D 11 engages, and drives rear axle D14, realizes independent rear-guard.At this point, due to the unpowered transmission of planet wheel carrier D35, it can be certainly By rotating, independent forerunner's state cannot be in rear-guard output power, system.

The utility model is simplified and has been strengthened to differential assembly D3, specific: differential carrier is simplified first, it is traditional Differential mechanism, axle shaft gear, planetary gear D34, planetary gear shaft D33 are mounted on differential mechanism shell, and shell both ends are fixed on On cabinet A5.The differential assembly of the utility model replaces differential carrier with planet wheel carrier D35, and passes through axle sleeve set It on rear axle D14, is positioned with thrust axle sleeve, while realizing that structure simplifies, moreover it is possible to rear axle driven gear D11 is installed, and By sliding power input gear, the switching of different rear-guards, differential 4 wheel driven, differential locking 4 wheel driven is realized；Next enhances planet Gear D 34, although between centers rotational speed difference is small, also carries out the mounting condition of planetary gear D34 since differential mechanism is in speed end Strengthen, is mounted with axle sleeve and thrust axle sleeve respectively in 34 inner end of planet gear D and outside, reduces planetary gear D34 and planet tooth The frictional force of axle stand D35 and planetary gear shaft D33.

The utility model performance is stablized, safe and reliable, compact-sized, it can be achieved that the haulage vehicle of installing the utility model exists Underloading good road surface realizes rear wheel drive when driving, and realizes differential when driving on the non-rigid road surface of underloading or fully loaded good road surface 4 wheel driven realizes differential locking 4 wheel driven when being fully loaded with non-rigid road surface, is conducive to raising tractor and is engaged in field transhipment and road road transport Defeated driving capability prevents tyre slip or sunken vehicle, meets the needs of various road conditions different driving mode.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 8, the rear axle assemblies D1 further include Rear axle bolt of cover D12, rear Simmer ring D13, rear axle snap ring D15, rear axle angular contact bearing D16 and rear hubcap D17, it is described The rear axle snap ring D15 is connect and passed through with rear axle D14 by spline installation by rear axle driven gear D11 and rear axle D14 axis rank limits Position, the one end the rear axle D14 are connect by front axle needle bearing D22 with front axle D21, and the other end passes through rear axle angular contact bearing D16 is fixedly connected with the rear hubcap D17, and the rear hubcap D17 is fixedly connected on described by rear axle bolt of cover D12 On cabinet A5.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 8, the differential mechanism driven gear D32 Be fixed on planet wheel carrier D35 by driven gear bolt D31, the preceding shaft assembly D2 further include before shaft retaining ring D24, preceding Axis snap ring D27 and front axle deep groove ball bearing D23, the one end the front axle D21 are connected with the rear axle D14, and the other end passes through front axle Deep groove ball bearing D23 is fixed on cabinet A5, and the preceding shaft retaining ring D24 and front axle snap ring D27 are socketed on the front axle D21.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Figure 14, the differential shaft assembly D replacement For between centers driving assembly, the between centers driving assembly includes preceding shaft assembly D2 and rear axle assemblies D1, and the rear axle assemblies D1 is at least Including rear axle D14 and rear axle gear DB2, the preceding shaft assembly D2 include front axle gear D25 and front axle D21, the front axle D21 and Rear axle D14 is connected by needle bearing, and the front axle gear D25 and rear axle gear DB2 pass through spline package in front axle D21 respectively On rear axle D14, the 4 wheel driven shift fork B25, which can drive, described states 4 wheel driven driving gear C317 along the axial direction of the jackshaft C31 Sliding, and can realize that the 4 wheel driven driving gear C317 is engaged with front axle gear D25, or simultaneously with front axle gear D25 and after Shaft gear DB2 engagement, or engaged with rear axle gear DB2；The drive bevel gear E1 is fixed by spline and the front axle D21 Connection, the driven wheel of differential E10 be fixed on forerunner's differential carrier E7 by driven wheel of differential E10 bolt E9 and with The drive bevel gear E1 engagement.

Jackshaft C31 driving gear at front end forerunner position, jackshaft C31 driving gear only with novel front axle gear D25 is combined, and realizes forerunner；Novel jackshaft C31 driving gear at intermediate 4 wheel driven position, jackshaft C31 driving gear both with Front axle gear D25 is combined also in conjunction with rear axle gear DB2, realizes 4 wheel driven；Jackshaft C31 driving gear is in rearmost end rear-guard position When, jackshaft C31 driving gear only in conjunction with rear axle gear DB2, realizes rear-guard.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 9, forerunner's differential carrier E7 with Semiaxis thrust bearing E8 is respectively equipped between the left half axle gear E6, right axle shaft gear E15, the semiaxis thrust bearing E8 divides It is not set on the left half axle E4 and right axle shaft E16, forerunner's differential carrier E7, left half axle gear E6, right axle shaft gear E15 is in contact with the semiaxis thrust bearing E8；Planet is equipped between forerunner's differential carrier E7 and the planetary gear D34 Gear thrust bearing E13, the planetary gear thrust bearing E13 are set on the planetary gear shaft D33, forerunner's differential Device shell E7, planetary gear D34 are in contact with the planetary gear thrust bearing E13；The left half axle E4 and right axle shaft E16 points It is not set in semiaxis angular contact bearing E2, the semiaxis angular contact bearing E2 is connected by bearing positioning bolt E5 and cabinet A5 It connects, half Simmer ring E3 is equipped between the bearing positioning bolt E5 and institute left half axle E4 and right axle shaft E16.

When equispeed output, forerunner's planetary gear E12 revolves under the action of driving force around forerunner's differential carrier E7, preceding It drives planetary gear E12 and does not surround forerunner's planetary gear shaft E11 rotation, at this time left half axle E4 and right axle shaft E16 equispeed output.

When differential exports, forerunner's planetary gear E12 both revolved around forerunner's differential carrier E7 under the action of driving force, It is still around forerunner's planetary gear shaft E11 rotation, at this time left half axle E4 and the output of right axle shaft E16 differential.

Power transmission route: drive bevel gear E1 to driven wheel of differential E10, until forerunner differential carrier E7, until forerunner's planet Gear shaft E11, until forerunner planetary gear E12, is then transferred to left half axle E4 and right axle shaft E16 respectively.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 9, forerunner's differential carrier E7 are Body formula hollow ball shape or split hollow ball shape, forerunner's differential carrier E7 is by bolt or rivet interlacement at a set of entirety.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 5, the main gear shift component B1 It further include a back fork axis B11, two or three gear shift fork axle B12, main transformer quick change block seat B14, main shift lever B15 and main gear shift Seat B14 bolt B 13, the 4 wheel driven shift assembly B2 further include that 4 wheel driven shift fork axle B24,4 wheel driven shift seat bolt B 23,4 wheel driven device change Block seat and 4 wheel driven gear lever B21, the 4 wheel driven device shift seat and main transformer quick change block seat B14 pass through 4 wheel driven shift seat bolt respectively B23 and main transformer quick change block seat B14 bolt B 13 are fixed on the cabinet A5, the 4 wheel driven gear lever B21 and main shift lever B15 It is separately fixed on the 4 wheel driven device shift seat and main transformer quick change block seat B14, the back fork axis B11, two or three gear shift forks Axis B12 is connected with the main transformer quick change bar, and the 4 wheel driven shift fork axle B24 is connected with the 4 wheel driven gear lever B21, the 4 wheel driven Shift fork B25, two or three gear shift fork B17 and one reverse gear dial be separately positioned on the 4 wheel driven shift fork axle B24, a back fork axis B11 and On two or three gear shift fork axle B12.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 6 and Fig. 7, the input shaft assembly C1 Further include input shaft angular contact bearing C12, input shaft rear end cap C17, input shaft drive end bearing bracket C18, inputs Simmer ring C19, is defeated Enter shaft end bonnet bolt C110, the both ends of the input shaft C11 are by input shaft angular contact bearing C12 respectively and after the input shaft End cap C17 is connected with input shaft drive end bearing bracket C18, and the input shaft rear end cap C17 and input shaft drive end bearing bracket C18 pass through input shaft end Bonnet bolt C110 is fixed on the cabinet A5, and input Simmer ring C19 is equipped in at least described input shaft drive end bearing bracket C18.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 7, the shaft assembly C2 that reverses gear also are wrapped Include reverse gear shaft snap ring C21, reverse gear shaft thrust bearing C22 and reverse gear axis runner axle bearing C24.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 7, the intermediate shaft assembly C3 are also wrapped Include jackshaft snap ring C32, intermediate shaft retaining ring C33, jackshaft drive end bearing bracket C313, jackshaft angular contact bearing C314, intermediate shaft end Cover lock piece C315, jackshaft bolt of cover C316 and jackshaft rear end cap C318, the jackshaft C31 pass through jackshaft angular contact Bearing C314 is connected with jackshaft drive end bearing bracket C313 and jackshaft rear end cap C318, the jackshaft drive end bearing bracket C313 and centre Shaft rear end lid C318 is fixed on cabinet A5 by jackshaft bolt of cover C316, and at least described jackshaft drive end bearing bracket C313 is equipped with Intermediate hubcap locking plate C315, the jackshaft snap ring C32, centre shaft retaining ring C33 are socketed on the jackshaft C31.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 3 and Fig. 4, box assembly A further includes Bell housing A1, case lid A2, ventilation bolt A3, box body bolt A4, oil discharge screw A6, differential mechanism cover board A8 bolt A7 and differential mechanism Cover board A8, the ventilation bolt A3 are arranged on the cabinet A5, and the case lid A2 and differential mechanism cover board A8 pass through described respectively Box body bolt A4 and differential mechanism cover board A8 bolt A7 are fixed on the cabinet A5, and the bell housing A1 and the cabinet A5 are solid Fixed connection.

The utility model also provides a kind of radial type 4 wheel driven type tractor, and embodiment is as follows, such as Fig. 1 and Fig. 2, including starts Machine 1, driver's cabin 2, container 4, vehicle frame 5, driving system 6 and any of the above-described tractor monoblock type transmission system 3, it is described Vehicle frame 5 includes traction seat 51, connecting pin 52, axis of traction 53 and rack 54, and the traction seat 51 is mounted on speed changer 31, described Axis of traction 53 is connected with rack 54, and the axis of traction 53 connect with traction seat 51 by the connecting pin 52 and forms radial type vehicle Frame 5, the engine 1, driver's cabin 2, speed changer 31 and traction seat 51 constitute front frame 5,54 structure of the axis of traction 53 and rack At Rear frame 5, front frame 5 connects the point of rotation integral, articulated vehicle frame 5 turns to by connecting pin 52 and Rear frame 5 For the midpoint of the duplex constant velocity cardan joint 32.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of tractor monoblock type transmission system, including the support of speed changer, Universal drive, rear driving axle, Universal drive back segment With Universal drive leading portion, which is characterized in that the rear driving axle is connected with the Universal drive back segment, institute's Universal drive back segment and Universal drive leading portion is connected by Universal drive support connection, the Universal drive leading portion with transmission output shaft；Wherein, The Universal drive back segment by include flexible transmission shaft and be arranged in the flexible transmission shaft both ends Hooke's joint, The Hooke's joint at the both ends of the flexible transmission shaft is connected with rear driving axle and Universal drive support respectively；The universal biography Dynamic leading portion includes the duplex constant velocity cardan joint and cross at flexible transmission shaft and the both ends for being separately positioned on the flexible transmission shaft Shaft universal-joint, the duplex constant velocity cardan joint and Hooke's joint are supported with the transmission output shaft and Universal drive respectively It is connected；The Universal drive support is fixed pivot, and being centrally disposed on for the duplex constant velocity cardan joint is led for connecting vehicle Draw the underface of the connecting pin of axis and traction seat.

2. tractor monoblock type transmission system according to claim 1, which is characterized in that the speed changer includes cabinet group Part, shift assembly, main variable speed assembly, differential shaft assembly and preceding driving assembly, the box assembly includes at least cabinet, described to change Gear component, main variable speed assembly, differential shaft assembly and preceding driving assembly are fixed on the cabinet, and the shift assembly includes main transformer Fast shift assembly and 4 wheel driven shift assembly, the main variable speed assembly includes input shaft assembly, reverse gear shaft assembly and intermediate shaft assembly, The shaft assembly that reverses gear is including at least reverse gear shaft and the reverse gear being arranged on the reverse gear shaft, and the input shaft assembly is at least Including input shaft and be fixed on the input shaft one gear driving gear, the driving gear that reverses gear, two gear driving gear and Three gear driving gears, the intermediate shaft assembly include jackshaft, 4 wheel driven driving gear, one reverse gear combined cover and two or three gear combine Set, the jackshaft are equipped with the driven gear that reverses gear, gear a driven gear, second gear driven gear and three by jackshaft needle bearing Driven gear is kept off, the 4 wheel driven driving gear is connected on the jackshaft by spline slide；One the gear driving gear, two Gear driving gear, three gear driving gears are engaged with the gear driven gear, second gear driven gear and three gear driven gears respectively, The driving gear that reverses gear is engaged with the reverse gear, the driven gear that reverses gear；The jackshaft is equipped with one by spline and reverses gear Splined hub and two or three gear splined hubs, described one reverse gear splined hub setting reversing gear driven gear and one gear driven gear between, institute State two or three gear splined hubs setting second gear driven gear and three gear driven gears between, described one reverse gear combined cover and two or three gear knot Trap is respectively sleeved at described one and reverses gear in splined hub and two or three gear splined hubs, and the main gear shift component includes at least one and falls Keep off shift fork and two or three gear shift forks, a back fork can drive the combined cover that reverses gear to move and real along described one splined hub of reversing gear Existing one reverses gear the engaging of combined cover and reverse gear driven gear or a gear driven gear, and two or the three gear shift fork can drive two or three gears to tie Trap, which moves along two or the three gear splined hub and realizes that two or three gear combined covers reverse gear with two, driven gear or three keeps off driven gears Engagement；The differential shaft assembly includes rear axle assemblies, preceding shaft assembly and differential assembly, the rear axle assemblies include at least rear axle, Rear axle driven gear and rear axle differential gear；The preceding shaft assembly includes at least front axle, front axle gear and front axle differential gear；Institute Differential assembly is stated including at least differential mechanism driven gear, planetary gear shaft, planet wheel carrier, planetary gear thrust axle sleeve, row Star gear, planet wheel carrier axle sleeve, planetary gear axle sleeve and thrust axle sleeve；The front axle and rear axle pass through front axle needle bearing It is connected, the differential mechanism driven gear is fixed on the planet wheel carrier, and the planet wheel carrier passes through planetary gear Pedestal axle sleeve is mounted on the rear axle and can rotate along rear axle, and the rear axle differential gear and rear axle driven gear are arranged in institute It states on rear axle, the rear axle driven gear is located at the outside of the rear axle differential gear, the front axle gear, front axle differential gear It is arranged on the front axle, the front axle gear is located at the outside of the front axle differential gear, the planet wheel carrier and institute State and be respectively equipped with thrust axle sleeve between rear axle differential gear, front axle differential gear, the thrust axle sleeve be respectively sleeved at it is described before On axis and rear axle, the planet wheel carrier, rear axle differential gear, front axle differential gear are in contact with the thrust axle sleeve；Institute Planet wheel carrier is stated equipped with multiple planetary gear shafts, the planetary gear shaft is along the circumferential equal of the differential mechanism driven gear Even setting is simultaneously limited by differential mechanism driven gear, and the planetary gear is set on the planet by the planetary gear shaft On gear shaft, planetary gear thrust axle sleeve, the planetary gear are equipped between the planet wheel carrier and the planetary gear Thrust axle sleeve is set in the planetary gear shaft, the planet wheel carrier, planetary gear and the planetary gear thrust axis Set is in contact；It is engaged respectively with front axle differential gear and rear axle differential gear and forms differential gearing in the planetary gear two sides System；The 4 wheel driven shift assembly includes at least 4 wheel driven shift fork, and the 4 wheel driven shift fork is connected with the 4 wheel driven driving gear, described 4 wheel driven shift fork states 4 wheel driven driving gear sliding axially along the jackshaft described in can driving, and can realize the 4 wheel driven driving tooth Wheel is engaged with front axle gear, or is engaged with differential mechanism driven gear, or simultaneously with rear axle driven gear and differential mechanism driven tooth Wheel engagement, or engaged with rear axle driven gear；The precursor assemblies include at least drive bevel gear, left half axle, left half axle gear, Forerunner's differential carrier, driven wheel of differential, forerunner's planetary gear shaft, forerunner's planetary gear, forerunner's planet wheel carrier, right axle shaft tooth Wheel and right axle shaft, the drive bevel gear are fixedly connected by spline with the front axle, and the driven wheel of differential is by from mantle Gear bolt is fixed on forerunner's differential carrier and engages with the drive bevel gear；On forerunner's planet wheel carrier It is provided with forerunner's planetary gear shaft described in multiple groups, forerunner's planetary gear shaft is uniformly set along the circumferential direction of the driven wheel of differential It sets, forerunner's planetary gear is arranged in forerunner's planetary gear shaft and is freely rotatable, forerunner's planetary gear shaft Frame is connected with forerunner's differential carrier, the left half axle and right axle shaft pass through respectively spline gear be sleeved on left half axle gear and In right axle shaft gear, forerunner's planetary gear two sides are engaged and are formed with the left half axle gear and right axle shaft gear respectively Differential transmission systems.

3. tractor monoblock type transmission system according to claim 2, which is characterized in that after the rear axle assemblies further include Shaft end bonnet bolt, rear Simmer ring, rear axle snap ring, rear axle angular contact bearing and rear hubcap, the rear axle driven gear pass through Spline installation is limited with rear axis connection and by the rear axle snap ring and rear axle axis rank, and described rear axle one end passes through front axle needle roller axis It holds and is fixedly connected by rear axle angular contact bearing with the rear hubcap with preceding axis connection, the other end, the rear hubcap passes through Rear axle bolt of cover is fixedly connected on the cabinet.

4. tractor monoblock type transmission system according to claim 2, which is characterized in that the differential shaft assembly replaces with Between centers driving assembly, the between centers driving assembly include preceding shaft assembly and rear axle assemblies, and the rear axle assemblies include at least rear axle And rear axle gear, the preceding shaft assembly include front axle gear and front axle, the front axle is connected with rear axle by needle bearing, described Front axle gear and rear axle gear pass through spline package on front axle and rear axle respectively, and the 4 wheel driven shift fork, which can drive, described states 4 wheel driven Driving gear slides axially along the jackshaft, and can realize that the 4 wheel driven driving gear is engaged with front axle gear, or simultaneously It engages with front axle gear and rear axle gear, or is engaged with rear axle gear；The drive bevel gear passes through spline and the front axle Be fixedly connected, the driven wheel of differential be fixed on forerunner's differential carrier by driven wheel of differential bolt and with the active Bevel gear engagement.

5. according to tractor monoblock type transmission system described in claim 2~4 any one, which is characterized in that the forerunner Semiaxis thrust bearing, the semiaxis thrust bearing are respectively equipped between differential carrier and the left half axle gear, right axle shaft gear It is respectively sleeved on the left half axle and right axle shaft, forerunner's differential carrier, left half axle gear, right axle shaft gear and described half Axle thrust bearing is in contact；Planetary gear thrust bearing is equipped between forerunner's differential carrier and the planetary gear, it is described Planetary gear thrust bearing is set in the planetary gear shaft, forerunner's differential carrier, planetary gear and the planet tooth Wheel thrust bearing is in contact；The left half axle and right axle shaft are respectively sleeved in semiaxis angular contact bearing, the semiaxis angular contact Bearing is connect by bearing positioning bolt with cabinet, and semiaxis is equipped between the bearing positioning bolt and institute left half axle and right axle shaft Sealing ring.

6. according to tractor monoblock type transmission system described in claim 2~4 any one, which is characterized in that the main transformer Fast shift assembly further includes a back fork axis, two or three gear shift fork axles, main transformer quick change block seat, main shift lever and main transformer quick change block seat Bolt, the 4 wheel driven shift assembly further include 4 wheel driven shift fork axle, 4 wheel driven shift seat bolt, 4 wheel driven device shift seat and 4 wheel driven shift Bar, the 4 wheel driven device shift seat and main transformer quick change block seat are fixed by 4 wheel driven shift seat bolt and main transformer quick change block seat bolt respectively On the cabinet, the 4 wheel driven gear lever and main shift lever are separately fixed at the 4 wheel driven device shift seat and main transformer quick change block seat On, the back fork axis, two or three gear shift fork axles are connected with the main transformer quick change bar, the 4 wheel driven shift fork axle and described four It drives gear lever to be connected, the 4 wheel driven shift fork, two or three gear shift forks and one, which reverse gear to dial, to be separately positioned on the 4 wheel driven shift fork axle, one reverses gear In shift fork axle and two or three gear shift fork axles.

7. tractor monoblock type transmission system according to claim 6, which is characterized in that the input shaft assembly further includes Input shaft angular contact bearing, input shaft rear end cap, input shaft drive end bearing bracket, input Simmer ring, input shaft end bonnet bolt, it is described defeated The both ends for entering axis are connect with the input shaft rear end cap and input shaft drive end bearing bracket respectively by input shaft angular contact bearing, described defeated Enter shaft rear end lid and input shaft drive end bearing bracket is fixed on the cabinet by input shaft end bonnet bolt, at least described input shaft front end Input Simmer ring is equipped in lid.

8. tractor monoblock type transmission system according to claim 7, which is characterized in that the intermediate shaft assembly further includes Jackshaft snap ring, intermediate shaft retaining ring, jackshaft drive end bearing bracket, jackshaft angular contact bearing, intermediate hubcap locking plate, intermediate hubcap Bolt and jackshaft rear end cap, the jackshaft pass through jackshaft angular contact bearing and jackshaft drive end bearing bracket and jackshaft rear end cap Be connected, the jackshaft drive end bearing bracket and jackshaft rear end cap are fixed on cabinet by jackshaft bolt of cover, it is at least described in Between axis drive end bearing bracket be equipped with intermediate hubcap locking plate, the jackshaft snap ring, jackshaft retaining ring are socketed on the jackshaft.

9. tractor monoblock type transmission system according to claim 8, which is characterized in that box assembly further includes clutch Shell, case lid, ventilation bolt, box body bolt, oil discharge screw, differential cover crab bolt and differential mechanism cover board, the ventilation bolt are set It sets on the cabinet, the case lid and differential mechanism cover board are fixed on by the box body bolt and differential cover crab bolt respectively On the cabinet, the bell housing is fixedly connected with the cabinet.

10. a kind of radial type 4 wheel driven type tractor, which is characterized in that including engine, driver's cabin, container, vehicle frame, driving system And tractor monoblock type transmission system described in claim 1~8 any one, the vehicle frame include traction seat, connecting pin, Axis of traction and rack, the traction seat are mounted on speed changer, and the axis of traction is connected with rack, and the axis of traction passes through described Connecting pin connect with traction seat and is formed articulated frame, and the engine, driver's cabin, speed changer and traction seat constitute front truck Frame, the axis of traction and rack constitute Rear frame, and front frame connects integral, articulated vehicle with Rear frame by connecting pin The point of rotation that frame turns to is the midpoint of the duplex constant velocity cardan joint.