A kind of back axle that can reduce the 4-wheel driven car chassis height
Technical field
The utility model relates to 4-wheel driven car transmission system manufacturing technology field, relates to a kind of back axle that can reduce the 4-wheel driven car chassis height in particular.
Background technology
What the rear axle reductor gear of 4-wheel driven car adopted at present is spur bevel gear wheel, and under driving engine height unmodified situation, chassis height is fixing can not to be changed.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of under driving engine height unmodified situation, can reduce the back axle of 4-wheel driven car chassis height.
The utility model comprises reducer gear, it is characterized in that: what reducer gear adopted is a pair of skew bevel gear.
The gear wheel shaft of above-mentioned a pair of skew bevel gear is connected with another gear wheel shaft to skew bevel gear in being arranged on auxiliary gear box by a transmission shaft.
Above-mentioned another driven by gear ring the gear wheel shaft of skew bevel gear, and the gear ring viscous coupling shell interior with being arranged on auxiliary gear box is connected.
The interior hub of above-mentioned viscous coupling and shell simultaneously be arranged on change speed gear box in interaxle differential is connected, the interior hub front axle differential interior with being arranged on auxiliary gear box is connected.It is that transmission of power is arrived front axle differential that interior hub connects interaxle differential, and it is to rear driving axle with transmission of power that shell connects interaxle differential.
For the leisure 4-wheel driven car that mainly travels in the city, its off-road capability is less important, and its travelling comfort is main.The utility model by the eccentric throw between gear, under 4-wheel driven car driving engine height unmodified situation, reduces the ground Clearance of automobile owing to adopt a pair of skew bevel gear to replace original spur bevel gear wheel, increases the travelling comfort of 4-wheel driven car.The skew bevel gear running is steady in addition, and operating noise is little.
Description of drawings
Fig. 1 is a rear driving axle engine installation scheme drawing;
Fig. 2 is a front driving axle engine installation scheme drawing;
Fig. 3 is the viscous coupling structural representation.
Among the figure: 1, change speed gear box, 2, driving engine, 3, interaxle differential, 4, viscous coupling, 5, the accurate double sided gear of propons, 6, front axle differential, 7, auxiliary gear box, 8, rear-axle casing, 9, the back axle skew bevel gear, 10, rear-axle differential, 401, the viscous coupling housing, 402, the viscous coupling lid, 403, male splines sheet, 404, the female splines sheet, 405, wire spring, 406, interior hub, 407, oil sealing.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
The specific embodiment
What the reducer gear among the embodiment on the rear-axle casing 8 adopted is a pair of skew bevel gear 9.Interaxle differential 3 is located in the change speed gear box 1, and propons skew bevel gear 5, front axle differential 6 lump together with viscous coupling 4 and be placed in the auxiliary gear box 7.Driving engine 2 change speed gear box 1 that is in transmission connection, change speed gear box 1 interaxle differential 3 that is in transmission connection, interaxle differential 3 viscous coupling 4 that is in transmission connection, viscous coupling 4 be in transmission connection respectively front axle differential 6, rear-axle differential, front axle differential 6 front driving wheel that is in transmission connection, the rear-axle differential rear drive sprocket that is in transmission connection.Viscous coupling 4 cooperates the speed discrepancy between the interaxle differential 3 adjusting front and back drive wheels.
Above-mentioned viscous coupling 4 is female splines sheets 404 of alternately arranging by in the seal cavity that housing 401 and interior hub 406 constitute, male splines sheet 403 and the wire spring 405 that is clipped between the interior male splines sheet are formed, inject in the cavity and have the silicone oil of good physicochemical property as working medium, on the female splines sheet 404 female splines is arranged, link to each other with the male splines on the interior hub 406, male splines sheet 403 has male splines, link to each other with the female splines on the housing 401, female splines sheet 404, the gap that the male splines sheet is 403 is guaranteed by the wire spring between the male splines sheet in being clipped in 405, process porose or groove separately on the interior male splines sheet, moment of torsion by interaxle differential 3 outputs, a part drives viscous coupling housing 401, a part drives hub 406 in the viscous coupling, viscous coupling housing 401 connects the gear ring of the accurate double sided gear 5 of propons again, the gear ring gear shaft of the accurate double sided gear 5 of propons, gear wheel shaft is connected with the gear wheel shaft of the accurate double sided gear 9 of back axle on being arranged on rear-axle casing 8 by a transmission shaft, the gear wheel shaft of the accurate double sided gear 9 of back axle drives gear ring, the gear ring rear-axle differential 10 that is in transmission connection.Hub 406 connects front axle differential again in the viscous coupling.Shell is by end cap 402 cappings of force fit, and interior hub 406 has rubber seal oil sealing 407 sealings in two " X " cross sections, can relatively rotate between interior hub 406 and the housing 401.It is that transmission of power is arrived front axle differential 6 that interior hub 406 connects interaxle differential 3, and it is to rear driving axle with transmission of power that shell 401 connects interaxle differentials 3.