Large-scale wheel-tire tractor front driving axle
Technical field
The utility model relates to a kind of large-scale wheel-tire tractor front driving axle.
Background technology
Along with the variation of national agricultural policy, the management style in soil also will turn to circulation intensive by the family-contract responsibility system type, and trac. also will develop to large-scale direction as field machine and the important equipment of engineering construction.Wheel-tire tractor then remains the keystone configuration pattern of agricultural traction engine, and four-wheel drive tractor has developed into the degree of laying equal stress on the back-wheel drive trac..As the four-wheel drive tractor of back-wheel drive trac. modification, owing to adopt mid-transmission shaft, adopt fluid-link steering and wide-section tyre, make the traction adhesion value, crossing ability and manoevreability greatly improve in the ranks.It is not only applicable to general farming on soft, the slowly drained soil, and is applicable to intertillage, paddy-field-working and is with the pre-installed machine operation of planting.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of large-scale wheel-tire tractor front driving axle that a kind of load-bearing is big, can adapt to dry land, intertillage, paddy field all weather operations.
For solving the problems of the technologies described above, the utility model comprises integral type front driving axle housing, front driving axle housing front is equipped with preceding supporting seat, its constructional feature is that diff is installed in front driving axle, diff has big spiral bevel gear, front driving axle housing back is equipped with and described diff power bonded assembly main gear assembly, be hinged with wheel reduction gear at steering drive axle housing two ends, the two V shape universal drive shafts that connect diff and wheel reduction gear are housed in the steering drive axle housing; The double acting middle is installed on the front driving axle housing turns to oil cylinder, turn to the piston rod of oil cylinder hinged by steering track rod and two wheel reduction gears.
Described main gear assembly comprises the differential mounting that is installed in front driving axle housing back, and gear wheel shaft is installed in the differential mounting, gear wheel shaft the inner be equipped with the little spiral bevel gear of the big spiral bevel gear ingear of diff, outer end be castellated shaft.
Described differential mounting back end outer surface is set with the back supporting seat; Described front driving axle housing is rectangular.
After adopting said structure, owing in the front driving axle housing, be equipped with and main gear assembly power bonded assembly diff, two ends are hinged with and diff power bonded assembly wheel reduction gear, the before driving steeraxle of Zu Chenging thus, improve the load-carrying properties and the tractive performance of steeraxle, used the middle two-way cylinder to realize that two wheel reduction gears turn to synchronously, simple in structure, flexible operation has improved the adaptive capacity of wheel-tire tractor.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail:
Fig. 1 is a structural representation of the present utility model;
The structural representation that Fig. 2 overlooks for Fig. 1.
The specific embodiment
With reference to accompanying drawing, this large-scale wheel-tire tractor front driving axle comprises integral type front driving axle housing 6, and the front driving axle housing is rectangular, has improved the intensity of drive axle, and diff 15 is installed in the front driving axle housing 6, and big spiral bevel gear 16 is installed in the differential casing.Front driving axle housing 6 back are equipped with and described diff 15 power bonded assembly main gear assemblies between two parties, this main gear assembly comprises the main gear differential mounting 3 that is installed in front driving axle housing 6 back, gear wheel shaft 18 is installed in the differential mounting 3, (preceding) end is provided with and the little spiral bevel gear of big spiral bevel gear 16 ingears of diff in the gear wheel shaft 18, (back) end is a castellated shaft outward, and castellated shaft connects the transmission shaft of the power of auxiliary gear box being passed to front driving axle.Front driving axle housing 6 two ends are provided with jointed shaft 7, are hinged with wheel reduction gear 1 by jointed shaft 7, and the two V shape universal joint shafts 5 that connect diff 15 and wheel reduction gear 1 are housed in the front driving axle housing 6.Wheel reduction gear 1 adopts the single-stage planetary gear transmission, it has steering swivel housing 8, wheel hub 9 is installed on the steering swivel housing 8, with the driving link sun wheel 12 of universal joint shaft one, be installed in pinion carrier 11 on the wheel hub 9, be installed in compensating-gear shaft 13 on the pinion carrier 11, be installed on the compensating-gear shaft 13 and with driving link sun wheel 12 planet gear meshed 14 the link together driven member of forming, the connecting element that the internally toothed annulus 10 on the steering swivel housing is formed with planetary wheel 14 engagements and indirect securement etc.This wheel reduction gear 1 compact conformation has advantages of high bearing capacity, can obtain than big speed ratio, can alleviate the load of universal joint shaft 5, main gear and auxiliary gear box, and dwindle their size.The middle double acting is installed on the differential mounting 3 turns to oil cylinder 4, turn to the piston rod of oil cylinder 4 to be hinged on the pitman arm of steering swivel housing 8, realize that two wheel reduction gears 1 turn to synchronously by steering track rod 2.Before being provided with, the front of front driving axle housing 6 waves axle, before wave be with on the axle before supporting seat 17, with differential mounting 3 back end outer surface as after wave axle, be with back supporting seat 19 on it, balance staff and gear wheel shaft (the main gear input shaft) 18 that rock back and forth is concentric, front driving axle can be around the balance staff teeter that rocks back and forth, and preceding supporting seat 17 is used for being connected main frame with back supporting seat 19.