CN2926670Y

CN2926670Y - Separated gearshift transfer case

Info

Publication number: CN2926670Y
Application number: CN 200620061560
Authority: CN
Inventors: 王良玉; 陈德明
Original assignee: SECOND AGRICULTURAL MACHINERY PLANT GUANGDONG PROVINCE
Current assignee: SECOND AGRICULTURAL MACHINERY PLANT GUANGDONG PROVINCE
Priority date: 2006-07-02
Filing date: 2006-07-02
Publication date: 2007-07-25
Anticipated expiration: 2016-07-02

Abstract

The utility model relates to a shift transfer case without integral reservoir, comprising of a case body, an input shaft, an output shaft, an counter shaft, a shaft sleeve, a bearing cap and a gear shift mechanism; wherein, a reverse gear shaft is arranged between the input shaft and the second shaft, the input shaft within the case body is provided with an input bull gear, an input pinion and a spline housing used for gear engagement. The second shaft is provided with a second shaft bull gear and a second shaft pinion, of which the second shaft bull gear is engaged with the input bull gear, the second shaft pinion is engaged with a reversing gear, and the reversing gear is in turn engaged with the second shaft pinion. The utility model has the advantages of simple and compact structure and easy-to-operate; moreover, due to the parallel arrangement of gear, the central distance between gears is large, hence increasing the applicable scope of the shift transfer case without integral reservoir. In addition to this, the utility model is provided with a front gear and a back gear, which can realize high service efficiency with effective material shoveling at a low speed when moving forward and rapid back-off ability.

Description

Split type shift transfer case

[technical field]

The utility model relates to a kind of transfer case, especially relates to the split type shift transfer case that the ransaxle at two ends is given in a kind of power distribution with loading machine gearbox output.

[background technique]

Loader mainly is made up of power plant, transmission system, running gear, equipment and frame etc.Power transmission system is the core of loader, comprises fluid torque converter, gearbox and transfer case etc., and the effect of transfer case is a ransaxle of the power distribution of gearbox output being given two ends.Common loader mainly adopts special-purpose gearbox to realize speed change and transfer, its gearbox is made up of a few rows of planetary gear mechanisms, and be furnished with special-purpose clutch or break, be used for controlling the member of planetary mechanism, and clutch or brakeage must special hydraulic system be controlled, cause the complex structure of loader, manufacture cost height, maintenance difficult.

At present, mechanical type transfer case commonly used on the loader is two grades of transfer cases, is provided with three pairs of gears of two rows, and two output shafts are arranged at the bottom, and during front-wheel drive, power is exported by the front end output shaft; When needing four-wheel drive, power is exported by two ends; This just must have one to overlap the operating mechanism of more complicated, cause the complex structure of loader, and power loss is big, and the operating space of Yao Qiuing is also big simultaneously; And engage a gear before and after can not realizing.

[model utility content]

In order to overcome the operating mechanism complexity of existing loader, and power loss is big, the shortcoming that the operating space of Yao Qiuing is big simultaneously, transfer case does not have front and back crosspiece, the utility model provide a kind of simple in structure, compact, centre distance is big, power loss is little, front and back crosspiece is arranged and can realize advancing the split type fast shift transfer case of slow astern.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of split type shift transfer case, comprise casing, input shaft, output shaft, jack shaft, axle sleeve, bearing cap and gearshift mechanism, one end of input shaft reaches outside the casing, the two ends of output shaft all reach outside the casing, described each two ends all are respectively arranged with bearing, between input shaft and two, be provided with reverse gear shaft, on the input shaft input gearwheel is housed in the casing, input small gear and the spline housing that is used for engage a gear, two gearwheels and two small gears are installed on two, two gearwheels mesh with the input gearwheel, two small gears and reverse gear engagement, reverse gear shaft is between between input shaft and two, reverse gear and input small gear and two pinion, three shaftgears and two gearwheel engagements, four shaftgears again with three shaftgears engagements, input gearwheel and input small gear are enclosed within on the input shaft by the needle bearing sky, all the other each gears are all fixing with corresponding axle by spline.

Between its corresponding bearing in the same side of above-mentioned each gear, be provided with axle sleeve, be provided with oil sealing in the bearing cap of output shaft bearings at both ends, in the bearing cap of input shaft one step bearing oil sealing is set also, input shaft stretches out between the outer end of casing and input shaft gearwheel and the input shaft small gear and is provided with input flange.

Oil sealing in the described bearing cap is an outside framework oil seal.

The shelves of described engage a gear mechanism are being arranged on the top of casing or the left and right sides of casing.Be provided with three mounting holes of the handbrake mechanism that is used for installation code in the front of described casing output shaft.

Described casing one side is provided with the oil level form by output shaft axis place, and this oil level form comprises window cover, plexiglass and sealing gasket.

The beneficial effects of the utility model are: adopt pitch wheel to be arranged in parallel, it is simple in structure, compact, be easy to manipulation; Because gear is arranged in parallel, the centre distance between gear is big, has strengthened the Applicable scope of split type shift transfer case simultaneously; And front and back crosspiece is arranged, can realize advancing shoveling at a slow speed and expect effectively, retreat quick utilization efficiency height.

[description of drawings]

Fig. 1 is a plan view of the present utility model;

Fig. 2 is the longitudinal section sectional view of B-B direction among Fig. 1;

Fig. 3 is the sectional view of the longitudinal section of C-C direction among Fig. 1;

Fig. 4 be among Fig. 1 A to described oil level form front view;

Fig. 5 is the plan view of the utility model example 2;

Fig. 6 is the sectional view of the longitudinal section of E-E direction among Fig. 5.

Among the figure: the 1-casing, 2-axle sleeve one, 3-imports small gear, 4-declutch shift shaft, the 5-shift fork, the 6-operating handle, 7-engage a gear spline housing, 8-imports gearwheel, 9-axle sleeve two, 10-bearing cap one, 11-input shaft, 12-needle bearing, 13-axle sleeve three, 14-bearing cap two, two gearwheels of 15-, 16-bearing cap three, 17-axle sleeve four, 18-three shaftgears, 19-outside framework oil seal, 20-output flange one, the 21-output shaft, 22-axle sleeve five, 23-outside framework oil seal, 24-bearing cap three, 25-axle sleeve six, 26-four shaftgears, 27-output flange two, three of 28-, 29-bearing cap four, the 30-spacer, 31-axle sleeve seven, two of 32-, the 33-bearing, two small gears of 34-, 35-bearing cap five, 36-spacer two, 37-bearing, 38-case lid, the 39-window cover, 40-plexiglass, 41-sealing gasket, the 42-reverse gear shaft, 43-bearing cap six, 44-bearing, the 45-reverse gear, 46-axle sleeve eight, 47-shelves handle.

[embodiment]

Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of split type shift transfer case that is used for loader, comprise casing 1, input shaft 11, output shaft 21, two 32, three 28, reverse gear shaft 42, axle sleeve, bearing cap and gearshift mechanism, one end of input shaft 11 reaches outside the casing 1, the two ends of output shaft 21 all reach outside the casing 1, and described each two ends all are respectively arranged with bearing.Input shaft 11 is a shaftgear in the casing 1, and two duplicate gears that vary in size and the spline housing 7 that is used for engage a gear are housed on it, and shaftgear meshes with spline housing 7 all the time; Two gears that vary in size also are housed on two 32, and two gearwheels 15 mesh with input shaft gearwheel 8, and two small gears 34 mesh with reverse gear 45; Reverse gear shaft 42 is between between input shaft 11 and second 21, reverse gear 45 and input shaft small gear 3 and two small gears 34 engagements; Three shaftgears 18 and two gearwheel 15 engagements, four shaftgears 26 mesh with three shaftgears 18 again.The large and small gear of input shaft is enclosed within on the input shaft 11 by needle bearing 12 skies, and all the other each gears are all fixing with corresponding axle by spline.

Between its corresponding bearing in the same side of described each gear, be provided with axle sleeve; Oil sealing 19,23 is set in the bearing cap 24 of output shaft bearings at both ends, in the bearing cap 35 of input shaft 11 1 step bearings oil sealing 19 is set also; Power stretches out the input flange 20 that the outer end of casing 1 links to each other with input shaft 11 by input shaft 11 and passes to input shaft gear, when engage a gear spline housing 7 during at meta, and unpowered output; When engage a gear spline housing 7 is hung to the right, power is passed to input shaft gearwheel 8 by spline housing, input shaft gearwheel 8 is passed to two gearwheels 15, pass to three shaftgears 18 and four shaftgears 26 then successively, by four shaftgears 26 power is passed to output shaft 21, output shaft 21 outputs power by the

output flange

20,27 at two ends; When engage a gear spline housing 7 is hung to the left side, power is passed to input shaft small gear 3 by spline housing 7, input shaft small gear 3 is passed to reverse gear 45, reverse gear 45 is passed to two small gears 34 again, pass to three shaftgears 18 and four shaftgears 26 then successively, by four shaftgears 26 power is passed to output shaft 21, output shaft 21 outputs power by the

output flange

20,27 at two ends, power output oppositely realizes reverse gear.

Engage a gear of the present utility model mechanism comprises declutch shift shaft 4, shift fork 5, operating handle 6, engage a gear spline housing 7 and case lid 38; Casing 1 one sides are provided with the oil level form by output shaft 21 axis places, and as shown in Figure 4, this oil level form comprises window cover 39, plexiglass 40, sealing gasket 41.

Course of action of the present utility model is: speed changer power is passed to input shaft 11 by input flange 20,7 engagements of input shaft gear and engage a gear spline housing, and when engage a gear spline housing 7 during at meta, unpowered output; When engage a gear spline housing 7 is hung to the right, power is passed to input shaft gearwheel 8 by spline housing, input shaft gearwheel 8 is passed to two gearwheels 15, pass to three shaftgears 18 and four shaftgears 26 then successively, by four shaftgears 26 power is passed to output shaft 21, output shaft 21 outputs power by the

output flange

20,27 at two ends, power output oppositely realizes reverse gear.

The utility model example 2 be with shelves 47 sides that are located at casing 1, as shown in Figure 5 and Figure 6, shelves are 47 setting to decide according to the driving situation, as Fig. 1, Fig. 2 and shown in Figure 3, with the shelves handle be arranged on casing 1 directly over.

Claims

1, a kind of split type shift transfer case, comprise casing, input shaft, output shaft, jack shaft, axle sleeve, bearing cap and gearshift mechanism, one end of input shaft reaches outside the casing, the two ends of output shaft all reach outside the casing, described each two ends all are respectively arranged with bearing, it is characterized in that: between input shaft and two, be provided with reverse gear shaft, on the input shaft input gearwheel is housed in the casing, input small gear and the spline housing that is used for engage a gear, two gearwheels and two small gears are installed on two, two gearwheels mesh with the input gearwheel, two small gears and reverse gear engagement, reverse gear and input small gear and two pinion, three shaftgears and two gearwheel engagements, four shaftgears mesh with three shaftgears again, input gearwheel and input small gear are enclosed within on the input shaft by the needle bearing sky, and all the other each gears are all fixing with corresponding axle by spline.

2, split type shift transfer case according to claim 1, it is characterized in that: between its corresponding bearing in the same side of above-mentioned each gear, be provided with axle sleeve, be provided with oil sealing in the bearing cap of output shaft bearings at both ends, in the bearing cap of input shaft one step bearing oil sealing is set also, input shaft stretches out between the outer end of casing and input shaft gearwheel and the input shaft small gear and is provided with input flange.

3, split type shift transfer case according to claim 2 is characterized in that: the oil sealing in the described bearing cap is an outside framework oil seal.

4, split type shift transfer case according to claim 1 is characterized in that: the shelves of described engage a gear mechanism are being arranged on the top of casing or the left and right sides of casing.

5, split type shift transfer case according to claim 1 and 2 is characterized in that: three mounting holes that are provided with the handbrake mechanism that is used for installation code in the front of described casing output shaft.

6, split type shift transfer case according to claim 1 is characterized in that: described casing one side is provided with the oil level form by output shaft axis place, and this oil level form comprises window cover, plexiglass and sealing gasket.