CN208749930U - A kind of multi-functional four-wheel-drive transfer case - Google Patents

Abstract

The utility model relates to a kind of multi-functional four-wheel-drive transfer cases, including box assembly, input shaft assembly, intermediate shaft assembly, 4 wheel driven shaft assembly, high to low gear pull-fork assembly and driving gear pull-fork assembly, the input shaft duplicate gear of input shaft assembly includes input shaft high gear and input shaft low-speed gear composition, input shaft high gear and input shaft low-speed gear can be engaged with jackshaft high gear jackshaft low-speed gear respectively, the rear axle combined cover and front axle combined cover of 4 wheel driven shaft assembly are engaged with rear axle and front axle socket respectively, shift fork and shift fork after driving gear can drive front axle combined cover and rear axle combined cover along the axial movement of front axle and rear axle respectively before driving is kept off, front axle combined cover and rear axle combined cover can be socketed with 4 wheel driven driven gear to be engaged, 4 wheel driven driven gear is engaged with intermediate shaft transmission gear.The utility model can realize that the vehicle for installing the transfer case in good road surface rear wheel drive when driving, front-wheel drive is used in non-rigid road traveling, when low speed goes up a slope or creeps using 4 wheel driven.

Description

A kind of multi-functional four-wheel-drive transfer case

Technical field

The utility model belongs to transfer case technical field, and in particular to a kind of multi-functional four-wheel-drive transfer case.

Background technique

Mainly by 3 kinds of forerunner, rear-guard and 4 wheel driven etc. in Automobile drive mode.The 4 wheel driven system on passenger car is applied at present System, mainly there is time sharing, in due course 4 wheel driven and full-time four-wheel drive etc..Wherein, time sharing system is due to needing without inter-axle differential It wants driver according to road conditions, reasonably selects 4 wheel driven or two drive schemes, it is improper to select, it is easy to lead to drive system internal power stream Consumption.The shortcomings that in due course 4 wheel driven can overcome time sharing, principle are to judge road conditions using computer technology, automatically select two drives Or 4 wheel driven, this system are typically used on high-grade passenger car due to needing electric-control system to assist.Full-time four-wheel drive system is due to axis Between be mounted with torsional differential gear, can realize 4 wheel driven in whole process, not need manually or electric-control system intervention, but torsional differential gear knot Structure is complicated, expensive, only uses on a small number of high-end vehicles.Using poor between each bridge of penetration type drive axle on heavy goods vehicle Fast 4 wheel driven, due to the emphasis of penetration type drive axle be increase rear-guard driving force, and and non-composed a11wheel drive structure, therefore to difference The requirement of fast locking is low, frequently with open type differential between penetration type drive axle.

In tractor field, since the operating condition of tractor changes greatly, delivered payload capability is strong.Therefore, in order to obtain good driving Performance and low speed grade climbing performance, it usually needs setting low speed jerking motion gear.And for frame-steered tractor, due to headstock and railway carriage It is turned in hinge joint with respect to deflection, therefore, in order to obtain good driving capability and reduce transmission loss, in good road surface row Rear wheel drive when sailing, in non-rigid road traveling, using front-wheel drive, (tractor antero posterior axis is mounted with the wheel of different decorative patterns Tire), when low speed goes up a slope or creeps using 4 wheel driven.

In conclusion it is urgent to provide a kind of performance stablize, it is safe and reliable, compact-sized, can get good driveability and The multi-functional four-wheel-drive transfer case of low speed grade climbing performance.

Utility model content

The purpose of the utility model is to provide a kind of performances to stablize, safe and reliable, compact-sized, can get good driven nature It can be with the multi-functional four-wheel-drive transfer case of low speed grade climbing performance.

Above-mentioned purpose is to be achieved through the following technical solutions: a kind of multi-functional four-wheel-drive transfer case, including box assembly, input Shaft assembly, intermediate shaft assembly, 4 wheel driven shaft assembly, high to low gear pull-fork assembly and driving gear pull-fork assembly, the box assembly is at least Including cabinet, the input shaft assembly, intermediate shaft assembly, 4 wheel driven shaft assembly, high to low gear pull-fork assembly and driving gear pull-fork assembly It is fixed on the cabinet, the input shaft assembly includes at least input shaft and the input shaft being arranged on the input shaft is double Join gear, the input shaft duplicate gear is made of input shaft high gear and input shaft low-speed gear, the intermediate shaft assembly It is described including at least jackshaft and the jackshaft high gear and jackshaft duplicate gear that are fixed on the jackshaft Jackshaft duplicate gear is made of jackshaft low-speed gear and intermediate shaft transmission gear, and the high to low gear pull-fork assembly includes at least High to low gear shift fork, the high to low gear shift fork are connected with the input shaft duplicate gear and can drive input shaft duplicate gear edge Input shaft slides axially, the input shaft high gear and input shaft low-speed gear can respectively with the jackshaft high gear The engagement of jackshaft low-speed gear；The 4 wheel driven shaft assembly includes at least rear axle assemblies and preceding shaft assembly, and the rear axle assemblies are at least Including 4 wheel driven driven gear, rear axle combined cover, rear axle and 4 wheel driven driven gear axle sleeve, the 4 wheel driven driven gear passes through described four It drives driven gear shaft to be set on the rear axle and can rotate along the rear axle, the preceding shaft assembly is combined including at least front axle Set and front axle, the rear axle combined cover and front axle combined cover are engaged with the rear axle and front axle socket respectively, and the driving gear is dialled It pitches component and includes at least driving gear shift fork, it includes shift fork and shift fork after driving gear, the drive before driving is kept off that the driving, which keeps off shift fork, It is dynamic to keep off preceding shift fork and shift fork after gear is driven to be connected respectively with the front axle combined cover and rear axle combined cover, and the front axle can be driven Along the axial movement of the front axle and rear axle, the front axle combined cover and rear axle combined cover can be with institutes for combined cover and rear axle combined cover The socket engagement of 4 wheel driven driven gear is stated, the 4 wheel driven driven gear and the intermediate shaft transmission gear engage.

The utility model rear axle and front axle are installed on an axis by bearing, and structure is compact, utilizes inside engaged gear The feature that driving torque is big, function is reliable realizes that forerunner, rear-guard, 4 wheel driven switch by mobile combined cover, single shift fork behaviour can be used Make, structure is simple.It is provided with gear positive lock device on selector fork, can prevent gearshift under heavy load condition from taking off automatically Shelves.

During concrete application, external impetus is transferred to input shaft, is transferred to input shaft duplicate gear by input shaft, dials Fork band driven input shaft duplicate gear is moved along input shaft, and input shaft duplicate gear is placed in most under the action of high to low gear shift fork The input shaft high gear of front end, input shaft duplicate gear is engaged with jackshaft high gear, and power is transferred to jackshaft, defeated Top gear out, input shaft duplicate gear is under the action of high to low gear shift fork, when being placed in rearmost end, on input shaft duplicate gear Input shaft low-speed gear is engaged with jackshaft low-speed gear, and power is transferred to jackshaft, exports bottom gear；During jackshaft passes through Between shaft transmission gear impart power to 4 wheel driven driven gear；When driving gear shift fork is placed in foremost position, front axle combined cover Only in conjunction with front axle, front axle is in free state, unpowered output, rear axle combined cover simultaneously with rear axle and 4 wheel driven driven gear knot It closes, power is only exported from rear axle, realizes independent rear-guard；Driving gear shift fork is when being placed in middle position, front axle combined cover simultaneously with Front axle and 4 wheel driven driven gear combine, and rear axle combined cover is simultaneously in conjunction with rear axle and 4 wheel driven driven gear, and power is simultaneously from front axle It is exported with rear axle, realizes 4 wheel driven；Driving gear shift fork is when being placed in last side position, and rear axle combined cover is only in conjunction with rear axle, rear axle In free state, unpowered output, for front axle combined cover in conjunction with front axle simultaneously and 4 wheel driven driven gear, power is only defeated from front axle Out, independent forerunner is realized.

The utility model performance is stablized, safe and reliable, compact-sized, it can be achieved that the haulage vehicle of installing the utility model has There are high speed and the switching of low speed both of which, while in good road surface rear wheel drive when driving, being used in non-rigid road traveling Front-wheel drive can get the adaptability that good driving capability improves tractor when low speed goes up a slope or creeps using 4 wheel driven.? It is provided with gear positive lock device on selector fork, gearshift under heavy load condition can be prevented automatically out of supply.

Further technical solution is that the rear axle and front axle are fixedly connected with splined hub, and the rear axle combined cover is with before Axis combined cover is socketed in splined hub respectively and can axial movement with respect to splined hub along rear axle and front axle.

Further technical solution is that the input shaft assembly further includes input shaft end cap, input Simmer ring, input shaft Bolt of cover, bearing of input shaft and input shaft retaining ring, the input shaft duplex-gear is arranged on input shaft by spline, described defeated The both ends for entering axis are equipped with bearing of input shaft, and the bearing of input shaft is fixedly connected on input shaft end and covers, the input shaft end cap It is fixedly connected by input shaft end bonnet bolt with the cabinet, is set in the input shaft end cap on the input terminal of at least described input shaft There is input Simmer ring, the input shaft retaining ring is set on the input shaft.

Further technical solution is that the intermediate shaft assembly further includes jackshaft bolt of cover, midship shaft bearing, centre Hubcap, intermediate shaft retaining ring and jackshaft snap ring, the jackshaft high speed tooth and jackshaft duplicate gear are arranged by spline It is positioned on the jackshaft and by jackshaft snap ring, the both ends of the jackshaft are equipped with midship shaft bearing, the jackshaft axis It holds and is fixedly connected on the intermediate hubcap, the intermediate hubcap connects by the way that jackshaft bolt of cover and the cabinet are fixed It connects, jackshaft Simmer ring is equipped in the jackshaft hubcap, the jackshaft retaining ring is set on the jackshaft.

Further technical solution is, the rear axle assemblies further include rear axle bolt of cover, rear axle bearing, rear hubcap, Rear axle snap ring and rear Simmer ring, the rear axle are fixedly connected by rear axle bearing with the rear hubcap, the rear hubcap It is fixedly connected on the cabinet by rear axle bolt of cover, described state is equipped with rear Simmer ring, the 4 wheel driven in rear hubcap Driven gear is positioned by the rear axle snap ring.

Further technical solution is that the preceding shaft assembly further includes rear axle retaining ring, front axle bolt of cover, preceding sealing Circle, preceding hubcap and front axle bearing, the front axle are fixedly connected by front axle bearing with the preceding hubcap, the preceding hubcap It is fixedly connected on the cabinet by front axle bolt of cover.

Further technical solution is that the high to low gear pull-fork assembly further includes high to low gear shift fork axle bolt, high to low gear group Fork shaft protheca, gear latch assembly, high to low gear shift fork head arm, high to low gear shift fork axle rear enclosure and high to low gear shift fork axle, the height Gear shift fork axle rear enclosure and high to low gear shift fork axle protheca keep off shift fork axle bolt by the driving and connect with the cabinet, the height The both ends of gear shift fork axle are respectively sleeved in the high to low gear shift fork axle rear enclosure and high to low gear shift fork axle protheca, and the high to low gear is dialled Fork is fixedly connected in the high to low gear shift fork axle, and the high to low gear shift fork head arm is connected with institute's high to low gear shift fork, the height Gear shift fork head arm can drive the high to low gear shift fork axle along the axis of the high to low gear shift fork axle rear enclosure and high to low gear shift fork axle protheca To movement, high to low gear self-locking grooves are arranged in the high to low gear shift fork axle, and the gear latch assembly is arranged in the high to low gear shift fork It is used cooperatively on axis protheca and with the high to low gear self-locking grooves.

Drive high to low gear shift fork axle along the high to low gear shift fork axle rear enclosure and height in this way, stirring shift fork head arm when high to low gear It is mobile to keep off shift fork axle protheca, and then drives the high to low gear shift fork mobile, input shaft duplicate gear acts on described in lower edge in shift fork Input shaft slides axially, and input shaft duplicate gear can realize the input shaft of input shaft duplicate gear in the different location of input shaft High gear is engaged with jackshaft high gear and input shaft low-speed gear and jackshaft low speed on input shaft duplicate gear Gear engagement, realizes the conversion of top gear and bottom gear.

Further technical solution is that the driving gear pull-fork assembly further includes driving gear shift fork axle bolt, gear locking Component, driving gear shift fork head arm seat, driving gear shift fork head arm and driving gear shift fork axle, the driving gear shift fork axle rear enclosure and driving Gear shift fork axle protheca keeps off shift fork axle bolt by the driving and connect with the cabinet, the both ends difference of the driving gear shift fork axle It is set in the driving gear shift fork axle rear enclosure and driving gear shift fork axle protheca, the driving gear shift fork head arm seat and the driving Gear shift fork is fixedly connected in the driving gear shift fork axle, and the driving gear shift fork head arm keeps off shift fork head arm seat phase with the driving Even, the driving gear shift fork head arm can drive the driving gear shift fork axle along driving gear shift fork axle rear enclosure and driving gear shift fork The axial movement of axis protheca, the driving gear shift fork axle setting driving gear self-locking grooves, the gear latch assembly are arranged described It is used cooperatively on driving gear shift fork axle protheca and with driving gear self-locking grooves.

Driving gear shift fork axle is driven to keep off shift fork axle rear enclosure and driving along the driving in this way, stirring shift fork head arm when driving gear It is mobile to keep off shift fork axle protheca, and then drives the driving gear shift fork movement, shift fork point after shift fork and driving are kept off before the driving is kept off Do not drive the front axle combined cover and rear axle combined cover along the axial movement of the front axle and rear axle, the driving gear shift fork is not With when position, it can be achieved that front axle combined cover only in conjunction with front axle, rear axle combined cover simultaneously in conjunction with rear axle and 4 wheel driven driven gear, With front axle combined cover simultaneously in conjunction with front axle and 4 wheel driven driven gear, rear axle combined cover simultaneously with rear axle and 4 wheel driven driven gear knot It closes and rear axle combined cover is only in conjunction with rear axle, three kind feelings of the front axle combined cover in conjunction with front axle simultaneously and 4 wheel driven driven gear Condition realizes the conversion of independent rear-guard, 4 wheel driven and independent forerunner.

Further technical solution is that the gear latch assembly includes self-locking steel ball, self-lock pin, self-locking spring, locking Pin, self-locking key seat, locking key seat and locking spring, the self-locking key seat keep off shift fork axle or high to low gear shift fork axle phase with the driving Even, the locking key seat is connected with the self-locking key seat, and the self-locking steel ball, self-lock pin and self-locking spring are arranged described self-locking In key seat, the lock pin and with locking spring be arranged in the locking key seat, the lock pin and self-lock pin are worn respectively Locking spring and self-locking spring, the lock pin are kept out in one end of self-lock pin, and self-locking steel is arranged in the other end of the self-lock pin Ball, the self-locking steel ball cooperate with driving gear self-locking grooves or high to low gear self-locking grooves.

When self-locking steel ball just falls into self-locking grooves, positions and generate self-locking, lock pin is low under the action of locking spring For gear in the rear end of self-lock pin, self-lock pin withstands self-locking steel ball, and self-locking steel ball can not remove self-locking grooves, and gear lever is locked up, can not Realize gear switching；When shift, lock pin and clutch pedal or clutch operating mechanism link, when let slip the clutch makes When obtaining clutch separation, lock pin under force, compresses locking spring, and lock pin is pulled to the position after separation, due to Self-lock pin end does not have lock pin low gear, and under the action of shifting gears active force, self-locking steel ball can push self-lock pin to compress self-locking bullet Spring, shift fork axle are axially movable, and self-locking steel ball is pushed to fall into next self-locking grooves, smoothly realize gear switching.

It is preferred that being equipped in the high to low gear shift fork axle of the gear latch assembly on the high to low gear pull-fork assembly by preset space length 2 self-locking grooves matched with the self-locking steel ball match with high to low gear, the gear locking group on the driving gear pull-fork assembly 3 self-locking grooves matched with the self-locking steel ball are equipped with by preset space length in the driving gear shift fork axle of part, with independent forerunner, four It drives, three kinds of gears of independent rear-guard match.

Further technical solution is that the box assembly further includes case lid, box body bolt, oil discharge screw, shift fork shaft-cup Plate and cover plate bolt, the oil discharge screw are arranged on the cabinet, and the case lid and shift fork axle cover board pass through the case respectively Body bolt and cover plate bolt are fixed on the cabinet.

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 outline drawing of transfer case involved in a kind of embodiment of the utility model；

Fig. 2 is sectional view of the transfer case involved in Fig. 1 along the face H-H；

Fig. 3 is that the connection structure of input shaft assembly and intermediate shaft assembly involved in a kind of embodiment of the utility model is shown It is intended to；

Fig. 4 is the structural schematic diagram of input shaft assembly involved in a kind of embodiment of the utility model；

Fig. 5 is sectional view of the transfer case top gear structure involved in Fig. 1 along the face K-K；

Fig. 6 is sectional view of the transfer case bottom gear structure involved in Fig. 1 along the face K-K；

Fig. 7 is the partial enlarged view in the portion transfer case I involved in Fig. 5；

Fig. 8 is sectional view of the portion transfer case I involved in Fig. 5 along the face M-M；

Fig. 9 is sectional view of the independent rear wheel drive structure of transfer case involved in Fig. 1 along the face J-J；

Figure 10 is sectional view of the transfer case 4 wheel driven structure involved in Fig. 1 along the face J-J；

Figure 11 is sectional view of the independent precursor structures of transfer case involved in Fig. 1 along the face J-J.

In figure:

A box assembly B inputs shaft assembly C intermediate shaft assembly

D 4 wheel driven shaft assembly E high to low gear pull-fork assembly F driving gear pull-fork assembly

A1 case lid A2 box body bolt A3 cabinet

A4 oil discharge screw A5 shift fork axle cover board A6 cover plate bolt

B1 input shaft end cap B2 inputs Simmer ring B3 input shaft end bonnet bolt

B4 bearing of input shaft B5 input shaft duplicate gear B6 input shaft

B7 inputs shaft retaining ring B8 input shaft low-speed gear B9 input shaft high gear

Hubcap among C1 jackshaft bolt of cover C2 midship shaft bearing C3

Shaft transmission gear among shaft retaining ring C5 jackshaft low-speed gear C6 among C4

C7 jackshaft snap ring C8 jackshaft high gear C9 jackshaft duplicate gear

Shaft assembly before C10 jackshaft D1 rear axle assemblies D2

D11 4 wheel driven driven gear D12 rear axle combined cover D13 rear axle bolt of cover

Axle bearing after hubcap D16 after D14 rear axle D15

Simmer ring D19 4 wheel driven driven gear axle sleeve after D17 rear axle snap ring D18

D21 front axle combined cover D22 rear axle retaining ring D23 front axle

Hubcap before Simmer ring D26 before D24 front axle bolt of cover D25

D27 front axle bearing E1 high to low gear shift fork axle bolt E2 high to low gear shift fork axle protheca

E3 gear latch assembly E4 high to low gear shift fork E5 high to low gear shift fork head arm

E6 high to low gear shift fork axle rear enclosure E7 high to low gear shift fork axle E8 high to low gear self-locking grooves

Shift fork F3 driving gear shift fork before F1 driving gear shift fork axle bolt F2 driving is kept off

F4 driving gear shift fork head arm seat F5 driving gear shift fork head arm F6 driving gear shift fork axle

The shift fork F8 driving gear self-locking steel ball of self-locking grooves E31 after F7 driving gear

E32 self-lock pin E33 self-locking spring E34 lock pin

The self-locking key seat E36 locking key seat E37 locking spring of E35

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 Fig.1~11, a kind of multi-functional four-wheel-drive transfer case, including box assembly A, Input shaft assembly B, intermediate shaft assembly C, 4 wheel driven shaft assembly D, high to low gear pull-fork assembly E and driving gear pull-fork assembly F, the cabinet Component A include at least cabinet A3, the input shaft assembly B, intermediate shaft assembly C, 4 wheel driven shaft assembly D, high to low gear pull-fork assembly E and Driving gear pull-fork assembly F is fixed on the cabinet A3, and the input shaft assembly B includes at least input shaft B6 and is arranged in institute The input shaft duplicate gear B5 on input shaft B6 is stated, the input shaft duplicate gear B5 is by input shaft high gear B9 and input Axis low-speed gear B8 composition, the intermediate shaft assembly C include at least jackshaft C10 and are fixed at the jackshaft C10 On jackshaft high gear C8 and jackshaft duplicate gear C9, the jackshaft duplicate gear C9 is by jackshaft low-speed gear C5 It is constituted with intermediate shaft transmission gear C6, the high to low gear pull-fork assembly E includes at least high to low gear shift fork E4, the high to low gear shift fork E4 is connected with the input shaft duplicate gear B5 and can drive input shaft duplicate gear B5 the sliding axially along input shaft B6, The input shaft high gear B9 and input shaft low-speed gear B8 can respectively with the jackshaft high gear C8 jackshaft low speed Gear C 5 engages；The 4 wheel driven shaft assembly D includes at least rear axle assemblies D1 and preceding shaft assembly D2, and the rear axle assemblies D1 is at least wrapped Include 4 wheel driven driven gear D11, rear axle combined cover D12, rear axle D14 and 4 wheel driven driven gear axle sleeve D19, the 4 wheel driven driven gear D11 is arranged on the rear axle D14 and can be rotated along the rear axle D14 by the 4 wheel driven driven gear axle sleeve D19, described Preceding shaft assembly D2 includes at least front axle combined cover D21 and front axle D23, the rear axle combined cover D12 and front axle combined cover D21 distinguish It is engaged with the rear axle D14 and front axle D23 socket, the driving gear pull-fork assembly F includes at least driving gear shift fork F3, the drive The dynamic shift fork F3 that keeps off includes shift fork F2 and shift fork F7 after driving gear before driving is kept off, shift fork F2 and shift fork after driving gear before the driving is kept off F7 is connected with the front axle combined cover D21 and rear axle combined cover D12 respectively, and can drive the front axle combined cover D21 and rear axle For combined cover D12 along the axial movement of the front axle D23 and rear axle D14, the front axle combined cover D21 and rear axle combined cover D12 can It is engaged with 4 wheel driven driven gear D11 socket, the 4 wheel driven driven gear D11 and the intermediate shaft transmission gear C6 are engaged.

During concrete application, such as Fig. 2~6 and Fig. 9, external impetus is transferred to input shaft B6, is transmitted by input shaft B6 To input shaft duplicate gear B5, shift fork band driven input shaft duplicate gear B5 is moved along input shaft B6, such as Fig. 5, input shaft duplex-gear B5 is taken turns under the action of high to low gear shift fork E4, is placed in front end, the input shaft high gear B9 of input shaft duplicate gear B5 with Power is transferred to jackshaft C10, exports top gear, such as Fig. 6, input shaft duplicate gear B5 by jackshaft high gear C8 engagement Input shaft low-speed gear B8 under the action of high to low gear shift fork E4, when being placed in rearmost end, on input shaft duplicate gear B5 It is engaged with jackshaft low-speed gear C5, power is transferred to jackshaft C10, exports bottom gear；Jackshaft C10 is passed by jackshaft Moving gear C6 imparts power to 4 wheel driven driven gear D11；Such as Fig. 9, when driving gear shift fork F3 is placed in foremost position, front axle Combined cover D21 is only in conjunction with front axle D23, and front axle D23 is in free state, unpowered output, rear axle combined cover D12 simultaneously with Rear axle D14 and 4 wheel driven driven gear D11 is combined, and power is only exported from rear axle D14, realizes independent rear-guard；Such as Figure 10, driving gear When shift fork F3 is placed in middle position, front axle combined cover D21 simultaneously in conjunction with front axle D23 and 4 wheel driven driven gear D11, rear axle Simultaneously in conjunction with rear axle D14 and 4 wheel driven driven gear D11, power is exported from front axle D23 and rear axle D14 combined cover D12 simultaneously, real Existing 4 wheel driven；Such as Figure 11, when driving gear shift fork F3 is placed in last side position, rear axle combined cover D12 only in conjunction with rear axle D14, after Axis D14 is in free state, unpowered output, front axle combined cover D21 in conjunction with front axle D23 simultaneously and 4 wheel driven driven gear D11, Power is only exported from front axle D23, realizes independent forerunner.

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 Good road surface rear wheel drive when driving, in non-rigid road traveling, using front-wheel drive, (tractor antero posterior axis D14 is mounted with not With the tire of decorative pattern), when low speed goes up a slope or creeps using 4 wheel driven, it can get good driving capability and reduce transmission loss, Effectively improve the consumption of drive system internal power stream.

On the basis of above-described embodiment, in another embodiment of the utility model, the rear axle D14 and the fixed company of front axle D23 It is connected to splined hub, the rear axle combined cover D12 and front axle combined cover D21 are socketed in splined hub respectively and can be with respect to splined hub edges The axial movement of rear axle D14 and front axle D23.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 2~4, the input shaft assembly B is also Including input shaft end cap B1, input Simmer ring B2, input shaft end bonnet bolt B3, bearing of input shaft B4 and shaft retaining ring B7 is inputted, The input shaft B6 duplex-gear is arranged on input shaft B6 by spline, and the both ends of the input shaft B6 are equipped with bearing of input shaft B4, the bearing of input shaft B4 are fixedly connected on input shaft end cap B1, and the input shaft end cap B1 passes through input shaft end cap spiral shell Bolt B3 is fixedly connected with the cabinet A3, and input is equipped in the input shaft end cap B1 on the input terminal of at least described input shaft B6 Simmer ring B2, the input shaft retaining ring B7 are set on the input shaft B6.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 3, the intermediate shaft assembly C further include Jackshaft bolt of cover C1, midship shaft bearing C2, intermediate hubcap C3, centre shaft retaining ring C4 and jackshaft snap ring C7, it is described in Between axis C10 high speed tooth and jackshaft duplicate gear C9 be arranged on the jackshaft C10 by spline and pass through jackshaft snap ring The both ends of C7 positioning, the jackshaft C10 are equipped with midship shaft bearing C2, and the midship shaft bearing C2 is fixedly connected on the centre On hubcap C3, the intermediate hubcap C3 is fixedly connected by jackshaft bolt of cover C1 with the cabinet A3, the centre Jackshaft C10 Simmer ring is equipped in axis C10 hubcap, the intermediate shaft retaining ring C4 is set on the jackshaft C10.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 4, the rear axle assemblies D1 further include Rear axle bolt of cover D13, rear axle bearings D 16, rear hubcap D15, rear axle snap ring D17 and rear Simmer ring D18, the rear axle D14's is fixedly connected by rear axle bearings D 16 with the rear hubcap D15, and the rear hubcap D15 passes through rear hubcap spiral shell Bolt D13 is fixedly connected on the cabinet A3, and described state is equipped with rear Simmer ring D18 in rear hubcap D15, the 4 wheel driven from Moving gear D11 is positioned by the rear axle snap ring D17.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 4, the preceding shaft assembly D2 further include Rear axle retaining ring D22, front axle bolt of cover D24, preceding Simmer ring D25, preceding hubcap D26 and front axle bearing D27, the front axle D23 is fixedly connected by front axle bearing D27 with the preceding hubcap D26, and the preceding hubcap D26 passes through front axle bolt of cover D24 is fixedly connected on the cabinet A3.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 5 and Fig. 6, the high to low gear shift fork group Part E further includes high to low gear shift fork axle bolt E1, high to low gear shift fork axle protheca E2, gear latch assembly E3, high to low gear shift fork head arm Before E5, high to low gear shift fork axle rear enclosure E6 and high to low gear shift fork axle E7, the high to low gear shift fork axle rear enclosure E6 and high to low gear shift fork axle Set E2 keeps off shift fork axle bolt F1 by the driving and connect with the cabinet A3, the both ends difference of the high to low gear shift fork axle E7 It is set in the high to low gear shift fork axle rear enclosure E6 and high to low gear shift fork axle protheca E2, the high to low gear shift fork E4 is fixedly connected on On the high to low gear shift fork axle E7, the high to low gear shift fork head arm E5 is connected with institute high to low gear shift fork E4, the high to low gear shift fork Head arm E5 can drive the high to low gear shift fork axle E7 along the high to low gear shift fork axle rear enclosure E6's and high to low gear shift fork axle protheca E2 High to low gear self-locking grooves E8 is arranged in axial movement, the high to low gear shift fork axle E7, and the gear latch assembly E3 is arranged in the height It is used cooperatively on low gear shift fork axle protheca E2 and with the high to low gear self-locking grooves E8.

In this way, when high to low gear stir shift fork head arm drive high to low gear shift fork axle E7 along the high to low gear shift fork axle rear enclosure E6 and High to low gear shift fork axle protheca E2 is mobile, and then drives the high to low gear shift fork E4 mobile, and input shaft duplicate gear B5 makees in shift fork The input shaft B6's described in lower edge slides axially, and different location of the input shaft duplicate gear B5 in input shaft B6 can realize input The input shaft high gear B9 of axis duplicate gear B5 engaged with jackshaft high gear C8 and input shaft duplicate gear B5 on Input shaft low-speed gear B8 is engaged with jackshaft low-speed gear C5, realizes the conversion of top gear and bottom gear.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 9~11, the driving keeps off shift fork group Part F further includes driving gear shift fork axle bolt F1, gear latch assembly E3, driving gear shift fork head arm seat F4, driving gear shift fork head arm F5 and driving gear shift fork axle F6, the driving gear shift fork axle F6 rear enclosure and driving gear shift fork axle F6 protheca are dialled by driving gear Fork shaft bolt F1 is connect with the cabinet A3, and the both ends of the driving gear shift fork axle F6 are respectively sleeved at the driving gear shift fork axle In F6 rear enclosure and driving gear shift fork axle F6 protheca, the driving gear shift fork head arm seat F4 is fixedly connected with driving gear shift fork F3 On driving gear shift fork axle F6, the driving gear shift fork head arm F5 is connected with driving gear shift fork head arm seat F4, described Driving gear shift fork head arm F5 can drive the driving gear shift fork axle F6 along driving gear shift fork axle F6 rear enclosure and driving gear shift fork The axial movement of axis F6 protheca, the driving gear shift fork axle F6 setting driving gear self-locking grooves F8, the gear latch assembly E3 are set It sets on driving gear shift fork axle F6 protheca and is used cooperatively with driving gear self-locking grooves F8.

Driving gear shift fork axle F6 is driven to keep off shift fork axle F6 rear enclosure along the driving in this way, stirring shift fork head arm when driving gear It is mobile with driving gear shift fork axle F6 protheca, and then drive the driving gear shift fork F3 mobile, shift fork F2 and drive before the driving is kept off Shift fork F7 drives the front axle combined cover D21 and rear axle combined cover D12 along the front axle D23's and rear axle D14 respectively after dynamic gear Axial movement, the driving keeps off shift fork F3 in different location, it can be achieved that front axle combined cover D21 is only in conjunction with front axle D23, rear axle Combined cover D12 simultaneously with rear axle D14 and 4 wheel driven driven gear D11 ining conjunction with and front axle combined cover D21 at the same with front axle D23 and four Drive that driven gear D11 is combined, rear axle combined cover D12 is simultaneously in conjunction with rear axle D14 and 4 wheel driven driven gear D11 and rear axle knot Trap D12 is only in conjunction with rear axle D14, three kinds in conjunction with front axle D23 simultaneously and 4 wheel driven driven gear D11 of front axle combined cover D21 Situation realizes the conversion of independent rear-guard, 4 wheel driven and independent forerunner.

On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 7 and Fig. 8, the gear latch assembly E3 includes self-locking steel ball E31, self-lock pin E32, self-locking spring E33, lock pin E34, self-locking key seat E35, locking key seat E36 and lock Only spring E37, the self-locking key seat E35 are connected with driving gear shift fork axle F6 or high to low gear shift fork axle E7, the lock pin Seat E36 is connected with the self-locking key seat E35, and the self-locking steel ball E31, self-lock pin E32 and self-locking spring E33 are arranged described In self-locking key seat E35, the lock pin E34 and with locking spring E37 be arranged in the locking key seat E36, the lock pin E34 and self-lock pin E32 wears locking spring E37 and self-locking spring E33 respectively, and the lock pin E34 is kept out in self-lock pin E32 One end, self-locking steel ball E31, the self-locking steel ball E31 and driving gear self-locking grooves are arranged in the other end of the self-lock pin E32 F8 or high to low gear self-locking grooves E8 cooperation, the lock pin E34 are equipped with contact one end of self-lock pin E32 and adjust gear.

When self-locking steel ball E31 just falls into self-locking grooves, positions and generate self-locking, lock pin E34 is locking spring E37's Lower low gear is acted in the rear end of self-lock pin E32, self-lock pin E32 withstands self-locking steel ball E31, and self-locking steel ball E31 can not remove self-locking Slot, gear lever are locked up, and cannot achieve gear switching；When shift, lock pin E34 and clutch pedal or clutch operating mechanism Linkage, when let slip the clutch makes clutch separation, lock pin E34 under force, compresses locking spring E37, Lock pin E34 is pulled to the position after separation, since the end self-lock pin E32 does not have lock pin E34 low gear, in shift active force Under effect, self-locking steel ball E31 can push self-lock pin E32 to compress self-locking spring E33, and shift fork axle continues to move axially, and push self-locking Steel ball E31 falls into next self-locking grooves, smoothly realizes gear switching.

It is preferred that by between predetermined on the high to low gear shift fork axle E7 of the gear latch assembly E3 on the high to low gear pull-fork assembly E Away from 2 self-locking grooves matched with the self-locking steel ball E31 are equipped with, match with high to low gear, on the driving gear pull-fork assembly F The driving gear shift fork axle F6 of gear latch assembly E3 it is upper by preset space length be equipped with 3 matched with the self-locking steel ball E31 oneself Locked groove matches with three kinds of independent forerunner, 4 wheel driven, independent rear-guard gears.

On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 1, the box assembly A further include Case lid A1, box body bolt A2, oil discharge screw A4, shift fork axle cover board A5 and cover plate bolt A6, the oil discharge screw A4 setting is in institute It states on cabinet A3, the case lid A1 and shift fork axle cover board A5 are fixed on institute by the box body bolt A2 and cover plate bolt A6 respectively It states on cabinet A3.

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 multi-functional four-wheel-drive transfer case, which is characterized in that including box assembly, input shaft assembly, intermediate shaft assembly, 4 wheel driven Shaft assembly, high to low gear pull-fork assembly and driving gear pull-fork assembly, the box assembly include at least cabinet, the input shaft group Part, intermediate shaft assembly, 4 wheel driven shaft assembly, high to low gear pull-fork assembly and driving gear pull-fork assembly are fixed on the cabinet, described The input shaft duplicate gear that input shaft assembly includes at least input shaft and is arranged on the input shaft, the input shaft duplex Gear is made of input shaft high gear and input shaft low-speed gear, and the intermediate shaft assembly includes at least jackshaft and fixation Jackshaft high gear and jackshaft duplicate gear on the jackshaft are set, and the jackshaft duplicate gear is by jackshaft Low-speed gear and intermediate shaft transmission gear are constituted, and the high to low gear pull-fork assembly includes at least high to low gear shift fork, the high to low gear Shift fork is connected with the input shaft duplicate gear and can drive input shaft duplicate gear the sliding axially along input shaft, described Input shaft high gear and input shaft low-speed gear can be engaged with the jackshaft high gear jackshaft low-speed gear respectively；Institute 4 wheel driven shaft assembly is stated including at least rear axle assemblies and preceding shaft assembly, the rear axle assemblies include at least 4 wheel driven driven gear, rear axle Combined cover, rear axle and 4 wheel driven driven gear axle sleeve, the 4 wheel driven driven gear are set on by the 4 wheel driven driven gear shaft It can rotate on the rear axle and along the rear axle, the preceding shaft assembly includes at least front axle combined cover and front axle, the rear axle knot Trap and front axle combined cover are engaged with the rear axle and front axle socket respectively, and the driving gear pull-fork assembly includes at least driving gear Shift fork, the driving gear shift fork includes that driving keeps off shift fork after preceding shift fork and driving gear, after the driving keeps off preceding shift fork and driving gear Shift fork is connected with the front axle combined cover and rear axle combined cover respectively, and can drive the front axle combined cover and rear axle combined cover edge The axial movement of the front axle and rear axle, the front axle combined cover and rear axle combined cover can be socketed with the 4 wheel driven driven gear and nibble It closes, the 4 wheel driven driven gear and the intermediate shaft transmission gear engage.

2. multi-functional four-wheel-drive transfer case according to claim 1, which is characterized in that the rear axle and front axle are fixedly connected with Splined hub, the rear axle combined cover and front axle combined cover are socketed in splined hub respectively and can be with respect to splined hubs along rear axle and front axle Axial movement.

3. multi-functional four-wheel-drive transfer case according to claim 1, which is characterized in that the input shaft assembly further includes input Hubcap, input Simmer ring, input shaft end bonnet bolt, bearing of input shaft and input shaft retaining ring, the input shaft duplex-gear are logical It crosses spline to be arranged on input shaft, the both ends of the input shaft are equipped with bearing of input shaft, and the bearing of input shaft is fixedly connected on Input shaft end covers, and the input shaft end cap is fixedly connected by input shaft end bonnet bolt with the cabinet, at least described input Input Simmer ring is equipped in input shaft end cap on the input terminal of axis, the input shaft retaining ring is set on the input shaft.

4. multi-functional four-wheel-drive transfer case according to claim 3, which is characterized in that the intermediate shaft assembly further includes centre Shaft end bonnet bolt, midship shaft bearing, intermediate hubcap, intermediate shaft retaining ring and jackshaft snap ring, the jackshaft high speed tooth is in Between axis duplicate gear be arranged by spline on the jackshaft and by jackshaft snap ring and position, the both ends of the jackshaft are set There is midship shaft bearing, the midship shaft bearing is fixedly connected on the intermediate hubcap, and the intermediate hubcap passes through centre Shaft end bonnet bolt is fixedly connected with the cabinet, and jackshaft Simmer ring, the jackshaft are equipped in the jackshaft hubcap Retaining ring is set on the jackshaft.

5. multi-functional four-wheel-drive transfer case described in any one according to claim 1~4, which is characterized in that the rear axle assemblies It further include rear axle bolt of cover, rear axle bearing, rear hubcap, rear axle snap ring and rear Simmer ring, the rear axle passes through rear axle Bearing is fixedly connected with the rear hubcap, and the rear hubcap is fixedly connected on the cabinet by rear axle bolt of cover, Described state is equipped with rear Simmer ring in rear hubcap, the 4 wheel driven driven gear is positioned by the rear axle snap ring.

6. multi-functional four-wheel-drive transfer case according to claim 5, which is characterized in that the preceding shaft assembly further includes rear axle bumper Circle, front axle bolt of cover, preceding Simmer ring, preceding hubcap and front axle bearing, the front axle pass through front axle bearing and the front axle End cap is fixedly connected, and the preceding hubcap is fixedly connected on the cabinet by front axle bolt of cover.

7. multi-functional four-wheel-drive transfer case according to claim 4, which is characterized in that the high to low gear pull-fork assembly further includes After high to low gear shift fork axle bolt, high to low gear shift fork axle protheca, gear latch assembly, high to low gear shift fork head arm, high to low gear shift fork axle Set and high to low gear shift fork axle, the high to low gear shift fork axle rear enclosure and high to low gear shift fork axle protheca pass through driving gear shift fork axle spiral shell Bolt is connect with the cabinet, and the both ends of the high to low gear shift fork axle are respectively sleeved at the high to low gear shift fork axle rear enclosure and high to low gear In shift fork axle protheca, the high to low gear shift fork is fixedly connected in the high to low gear shift fork axle, the high to low gear shift fork head arm with Institute's high to low gear shift fork is connected, and the high to low gear shift fork head arm can drive the high to low gear shift fork axle after the high to low gear shift fork axle High to low gear self-locking grooves, the gear locking is arranged in the axial movement of set and high to low gear shift fork axle protheca, the high to low gear shift fork axle Component is arranged on the high to low gear shift fork axle protheca and is used cooperatively with the high to low gear self-locking grooves.

8. multi-functional four-wheel-drive transfer case according to claim 4, which is characterized in that the driving keeps off pull-fork assembly and further includes Driving gear shift fork axle bolt, gear latch assembly, driving gear shift fork head arm seat, driving gear shift fork head arm and driving gear shift fork axle, The driving gear shift fork axle rear enclosure and driving gear shift fork axle protheca keep off shift fork axle bolt by the driving and connect with the cabinet, The both ends of the driving gear shift fork axle are respectively sleeved in the driving gear shift fork axle rear enclosure and driving gear shift fork axle protheca, described Driving gear shift fork head arm seat and driving gear shift fork are fixedly connected in the driving gear shift fork axle, and the driving keeps off shift fork head Arm is connected with driving gear shift fork head arm seat, and the driving gear shift fork head arm can drive the driving gear shift fork axle along the drive The axial movement of dynamic gear shift fork axle rear enclosure and driving gear shift fork axle protheca, the driving gear shift fork axle setting driving gear self-locking grooves, The gear latch assembly setting is used cooperatively on driving gear shift fork axle protheca and with driving gear self-locking grooves.

9. multi-functional four-wheel-drive transfer case according to claim 7 or 8, which is characterized in that the gear latch assembly includes Self-locking steel ball, self-lock pin, self-locking spring, lock pin, self-locking key seat, locking key seat and locking spring, the self-locking key seat and institute It states driving gear shift fork axle or high to low gear shift fork axle is connected, the locking key seat is connected with the self-locking key seat, the self-locking steel ball, Self-lock pin and self-locking spring are arranged in the self-locking key seat, the lock pin and are arranged with locking spring in the locking key seat Interior, the lock pin and self-lock pin wear locking spring and self-locking spring respectively, and the lock pin is kept out in one end of self-lock pin, Self-locking steel ball is arranged in the other end of the self-lock pin, and the self-locking steel ball keeps off self-locking grooves with the driving or high to low gear self-locking grooves are matched It closes.

10. multi-functional four-wheel-drive transfer case according to claim 9, which is characterized in that the box assembly further include case lid, Box body bolt, oil discharge screw, shift fork axle cover board and cover plate bolt, the oil discharge screw are arranged on the cabinet, the case lid It is fixed on the cabinet by the box body bolt and cover plate bolt respectively with shift fork axle cover board.