A kind of four-wheel-drive transfer case
Technical field
The present invention relates to actuating device field, particularly four-wheel-drive transfer case.
Background technology
So-called transfer case, it is simply that the device being allocated by the power of electromotor, can output power to rear axle, or be simultaneously outputting to front/rear axle.
The rear bridge driven outfan of existing four-wheel-drive transfer case and propons drive output be not at same level height.After four-wheel-drive transfer case is installed on motor vehicles, rear bridge driven outfan and back axle be not in same level, the power transmission shaft connecting rear bridge driven outfan and back axle has relatively mitre with horizontal plane, cause vehicle easily to break down when running, and existing four-wheel-drive transfer case can only realize the conversion between rear-guard and 4 wheel driven.Additionally, existing four-wheel-drive transfer case only has two drive output, it is impossible to provide power for other equipment such as oil pump.
Existing four-wheel-drive transfer case, such as CN 200955566Y discloses a kind of four and drives transfer case, it includes casing, driving shaft and driven shaft it is provided with in casing, the first gear it is additionally provided with in described casing, second gear, 3rd gear, 4th gear, driven shaft and driven shaft, first gear is arranged on driving shaft and links with driving shaft, second gear is arranged on driven shaft, second gear and the first gear engage thus drive driven shaft to rotate, 3rd gear is arranged on driven shaft, 3rd gear and the second gear engage thus drive driven shaft to rotate, 4th gear is arranged on driven shaft, 4th gear and the 3rd gear engage thus drive driven shaft to rotate.This four drivings transfer case is applicable to beach buggy, is not suitable for the Agricultural automotive vehicles such as other motor vehicles, particularly tractor.The defect existed when applying to Agricultural automotive vehicle has: one, driving shaft and driven shaft be not at same level height, and the power transmission shaft connecting rear bridge driven outfan and back axle has relatively mitre with horizontal plane, causes Agricultural automotive vehicle easily to break down when running;Two, this four drivings transfer case only has this kind of drive pattern of 4 wheel driven;Three, driving shaft and the driven shaft of this four drivings transfer case drives back axle and propons respectively, it is impossible to provide power for other equipment.Such as, when Agricultural automotive vehicle is linked with rotary cultivator, needs oil pump to drive oil cylinder, and then control mentioning and putting down of rotary cultivator.This four drivings transfer case cannot provide power for oil pump.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art to provide a kind of four-wheel-drive transfer case, the rear bridge driven outfan of this four-wheel-drive transfer case and propons drive output are in same level height, the power transmission shaft connecting rear bridge driven outfan and back axle is less with horizontal plane angle, Agricultural automotive vehicle is not easy to break down when running, and can realize the conversion between rear-guard, forerunner, 4 wheel driven.
Further purpose, is to provide the four-wheel-drive transfer case of a kind of improvement, on this basis, can provide power for other equipment such as oil pump such that it is able to be linked with rotary cultivator work while driving propons and back axle.
The technical scheme is that a kind of four-wheel-drive transfer case, output shaft, rear bridge driven output shaft is driven including casing, front fork, rear fork, power shaft, jackshaft, propons, power shaft is arranged on above casing by bearing, power shaft part in casing is sequentially installed with the first power shift gear, the second power shift gear from left to right, and the first power shift gear, the second power shift gear all can slide axially along power shaft;Jackshaft is fixed in the middle part of casing, and jackshaft is sequentially installed with the first idler gear, the second idler gear from left to right, and the first idler gear, the second idler gear are arranged on jackshaft by bearing respectively;Propons drives output shaft to be arranged on casing lower left by bearing, and propons drives and is fixed with propons driving gear on output shaft;Rear bridge driven output shaft is arranged on casing lower right by bearing, and rear bridge driven output shaft is fixed with rear bridge driven gear;Front shift fork and the coupling of the first power shift gear, rear fork and the coupling of the second power shift gear, the first power shift gear and the engagement of the first idler gear, the second power shift gear and the engagement of the second idler gear, first idler gear drives gear to engage with propons, and the second idler gear engages with rear bridge driven gear.
The propons of the present invention drives output shaft and rear bridge driven output shaft all below casing, when being installed on Agricultural automotive vehicle, can reduce connection rear bridge driven output shaft and the power transmission shaft of back axle and horizontal plane angle, and Agricultural automotive vehicle is not easy to break down when running.And by arranging separate front fork and rear fork, the conversion between forerunner, rear-guard, 4 wheel driven can be realized.
Further, this four-wheel-drive transfer case also includes that oil pump drives, and oil pump is driven through bearing and is arranged on top on the right side of casing, and the left end that oil pump drives is connected with power shaft right-hand member by bearing.
The power shaft right-hand member of the present invention with the addition of oil pump drive output, can provide power for other equipment such as oil pump while driving propons and back axle.
Below in conjunction with the drawings and specific embodiments, the detailed construction of the present invention is further described.
Accompanying drawing explanation
Fig. 1 is embodiment 1 structural representation.
Fig. 2 is embodiment 2 structural representation.
Detailed description of the invention
Embodiment 1
As shown in Figure 1: a kind of preferred embodiment of a kind of four-wheel-drive transfer case of the present invention, including casing 20, front fork 10, rear fork 1, power shaft 13, jackshaft 6, propons drives output shaft 18, rear bridge driven output shaft 9, front fork 10, rear fork 1 is installed in casing 20 top, power shaft 13 is arranged on above casing 20 by the first bearing of input shaft 12 and the second bearing of input shaft 3, first bearing of input shaft 12 and the second bearing of input shaft 3 are deep groove ball bearing, the left end of power shaft 13 is power intake, the power shaft 13 part in casing 20 is sequentially installed with the first power shift gear 11 from left to right, second power shift gear 2, first power shift gear 11, second power shift gear 2 all can slide axially along power shaft 13;Jackshaft 6 is fixed in the middle part of casing 20, first idler gear the 14, second idler gear 4 it is sequentially installed with from left to right on jackshaft 6, first idler gear 14 is arranged on jackshaft 6 by the first midship shaft bearing 15, second idler gear 4 is arranged on jackshaft 6 by the second midship shaft bearing 5, and the first midship shaft bearing 15 and the second midship shaft bearing 5 are needle bearing;Propons drives output shaft 18 to drive output shaft bearing 17 and the second propons to drive output shaft bearing 19 to be arranged on casing 20 lower left by the first propons, first propons drives output shaft bearing 17 and the second propons to drive output shaft bearing 19 to be deep groove ball bearing, and propons drives and is fixed with propons driving gear 16 on output shaft 18;Rear bridge driven output shaft 9 is arranged on casing 20 lower right by the first rear bridge driven output shaft bearing 8 and the second rear bridge driven output shaft bearing 21, first rear bridge driven output shaft bearing 8 and the second rear bridge driven output shaft bearing 21 are deep groove ball bearing, and rear bridge driven output shaft 9 is fixed with rear bridge driven gear 7;Propons drives the left end of output shaft 18 to be propons drive output, and the right-hand member of rear bridge driven output shaft 9 is rear bridge driven outfan;Front shift fork 10 couples with the first power shift gear 11, rear fork 1 couples with the second power shift gear 2, first power shift gear 11 engages with the first idler gear 14, second power shift gear 2 engages with the second idler gear 4, first idler gear 14 drives gear 16 to engage with propons, and the second idler gear 4 engages with rear bridge driven gear 7.
Embodiment 2
As shown in Figure 2: the another kind of preferred embodiment of a kind of four-wheel-drive transfer case of the present invention, including casing 22, front fork 11, rear fork 1, power shaft 14, oil pump drives 3, jackshaft 17, propons drives output shaft 20, rear bridge driven output shaft 9, front fork 11 is arranged on casing 22 top, rear fork 1 is arranged on casing 22 top, power shaft 14 is arranged on above casing 22 by bearing of input shaft 13, bearing of input shaft 13 is deep groove ball bearing, the left end of power shaft 14 is power intake, the power shaft 14 part in casing 22 is sequentially installed with the first power shift gear 12 from left to right, second power shift gear 2, first power shift gear 12, second power shift gear 2 all can slide axially along power shaft 14;Oil pump drives 3 to be arranged on top on the right side of casing 22 by oil pump bearing 4, and oil pump bearing 4 is deep groove ball bearing, and oil pump drives the left end of 3 to be connected with the right-hand member of power shaft 14 by bearing;Jackshaft 17 is fixed in the middle part of casing 22, first idler gear the 15, second idler gear 5 it is sequentially installed with from left to right on jackshaft 17, first idler gear 15 is arranged on jackshaft 17 by the first midship shaft bearing 16, second idler gear 5 is arranged on jackshaft 17 by the second midship shaft bearing 6, and the first midship shaft bearing 16 and the second midship shaft bearing 6 are needle bearing;Propons drives output shaft 20 to drive output shaft bearing 19 and the second propons to drive output shaft bearing 21 to be arranged on casing 22 lower left by the first propons, first propons drives output shaft bearing 19 and the second propons to drive output shaft bearing 21 to be deep groove ball bearing, and propons drives and is fixed with propons driving gear 18 on output shaft 20;Rear bridge driven output shaft 9 is arranged on casing 22 lower right by the first rear bridge driven output shaft bearing 8 and the second rear bridge driven output shaft bearing 10, first rear bridge driven output shaft bearing 8 and the second rear bridge driven output shaft bearing 10 are deep groove ball bearing, and rear bridge driven output shaft 9 is fixed with rear bridge driven gear 7;Propons drives the left end of output shaft 20 to be propons drive output, and the right-hand member of rear bridge driven output shaft 9 is rear bridge driven outfan;Front shift fork 11 couples with the first power shift gear 12, rear fork 1 couples with the second power shift gear 2, first power shift gear 12 engages with the first idler gear 15, second power shift gear 2 engages with the second idler gear 5, first idler gear 15 drives gear 18 to engage with propons, and the second idler gear 5 engages with rear bridge driven gear 7.
The operation principle of the present invention is described: when one, rear fork 1 being pulled low order end below in conjunction with embodiment 2, the second power shift gear 2 drives 3 to engage with oil pump, it is achieved export power to oil pump;When two, rear fork 1 being pulled to centre position, the second power shift gear 2 is in the second idler gear 5 and oil pump drives between 3, and the second power shift gear 2 dallies, it is achieved trailing wheel neutral;When three, rear fork 1 being pulled high order end, the second power shift gear 2 engages with the second idler gear 5, it is achieved rear wheel drive;When four, front fork 11 being pulled high order end, the first power shift gear 12 engages with the first idler gear 15, it is achieved front-wheel drive;Five, by front fork 11 plate to low order end time, the first power shift gear 12 dallies, it is achieved front-wheel neutral.Because front fork 11 and rear fork 1 independently control driving or the neutral of front wheels and rear wheels, therefore four-wheel-drive transfer case can realize the conversion between forerunner, rear-guard, 4 wheel driven.On the other hand, propons drives output shaft 20 and rear bridge driven output shaft 9 all below casing 22, when being installed on car, can reduce connection rear bridge driven output shaft 9 and the power transmission shaft of back axle and horizontal plane angle, reduce vehicle operation troubles rate.Additionally, when the Agricultural automotive vehicle installing embodiment 2 is linked with rotary cultivator, newly-increased oil pump drives 3 can provide power for oil pump, and oil pump drives oil cylinder, and then controls mentioning and putting down of rotary cultivator.
Above the present invention is explained in detail, it is impossible to think that protection scope of the present invention is limited only to above-mentioned embodiment.If not producing difference substantially with the technical scheme of the claims in the present invention, the deduction or replace to above-mentioned embodiment are still considered within protection scope of the present invention.