CN207740415U - inter-wheel differential assembly - Google Patents

Abstract

The utility model discloses a kind of inter-wheel differential assemblies, including left differential carrier, right differential carrier, left half axle bevel gear, right axle shaft bevel gear, four planetary gears and dynamic bevel gear, right differential carrier is detachably arranged on left differential carrier, it is formed between left differential carrier and right differential carrier for installing left half axle bevel gear, right axle shaft bevel gear and planetary spherical hollow space, dynamic bevel gear is detachably arranged in the side close to right differential carrier on left differential carrier, left half axle bevel gear, the center line of right axle shaft bevel gear and dynamic bevel gear overlaps, shaft mounting hole there are four being opened on right differential carrier, four planetary gears are meshed with left half axle bevel gear and right axle shaft bevel gear simultaneously.The utility model has the beneficial effects that：The intersection point of center planetary gear line is located at the centre of sphere of spherical hollow space, ensures that the engagement of the utility model middle gear is normal, avoids the problem caused by gear engagement is abnormal.

Description

Inter-wheel differential assembly

Technical field

The utility model is related to a kind of inter-wheel differential assemblies, belong to automobile making field of mechanical technique.

Background technology

The overwhelming majority is conventional two-piece structure (i.e. differential in the inter-wheel differential assembly used on existing commercial vehicle Device housing assy is two parts of left differential carrier and right differential carrier composition), planetary gear shaft be monoblock type appearance in cross knot Structure.

Left differential carrier and right differential carrier wherein in differential case assembly by the center of intermediate spherical surface to point, it is left and right The spherical surface of part and the differential bearing mounting rod diameter at both ends connect bolt with differential mechanism after processing is completed and are fixed together reprocessing Planetary gear shaft hole (hole of four angles in 90 °)；For ensure differential assembly state axle shaft gear with it is planetary just Really engagement, the plane that four planetary gear shaft centerline holes are formed are required in the center of spherical surface.The major advantage of this structure It is that structure design is simple, blank moulding process is ripe, production efficiency is high, at low cost；But a disadvantage is that after the completion of mechanical processing very The difficult accurate spherical surface for ensureing left housing and right shell can form an accurate sphere after component again, and (prior art is in left differential carrier A hemisphere is processed on one hemisphere of upper processing, right differential carrier；Left and right shell is theoretically required to connect latter two hemisphere Complete sphere, four planetary gear shaft hole centers should be formed in sphere centre four planetary gear installation positions On, but in the actual production process, this requirement is difficult to meet)；Planetary gear shaft is a cross-shaped configuration：To ensure normally to make It is the smaller the better with the error for needing to ensure the verticality between the concentricities of two opposite axis centers, adjacent two axis；But it is limited by The limitation of heat-treatment distortion and mechanical processing technique, required geometric tolerance be difficult to control and the consistency of batch also very Difference.

If both sides hemisphere cannot form a complete sphere or planetary gear shaft hole not on the centre of sphere；It can then lead Cause planetary gear abnormal with engaging for axle shaft gear, it may occur that gear ablation, planetary gear shaft and planetary gear sintering are one It rises and causes have the failures such as abnormal sound when planetary gear fracture, normally travel, can seriously cause differential mechanism failure that vehicle is caused to stop Fortune.

Invention content

One purpose of the utility model is to provide a kind of inter-wheel differential assembly, solves planetary gear shaft in the prior art The intersection point of center line is difficult to the technological deficiency overlapped with ball centre.

To solve the above problems, technical solution adopted in the utility model is：A kind of inter-wheel differential assembly, including a left side Differential carrier, right differential carrier, left half axle bevel gear, right axle shaft bevel gear, four planetary gears and dynamic bevel gear, it is described Right differential carrier is detachably arranged on left differential carrier, is formed and is used between the left differential carrier and right differential carrier Left half axle bevel gear, right axle shaft bevel gear and planetary spherical hollow space, the left side and the right side of the left differential carrier are installed Respectively one differential bearing of setting, the dynamic bevel gear are detachably arranged on left differential carrier on the right side of differential carrier Close to the side of right differential carrier, the differential bearing, left half axle bevel gear, right axle shaft bevel gear and dynamic bevel gear Center line overlaps, and opens on the right differential carrier there are four the shaft mounting hole inside and outside right reducing gearbox, described four A shaft mounting hole be located at two of spherical hollow space it is orthogonal diametrically, and the plane where four shaft mounting holes with The central axis of dynamic bevel gear, described four planetary gears are rotated by the shaft being arranged in shaft mounting hole respectively In spherical hollow space, and four planetary gears are mutually nibbled with left half axle bevel gear and right axle shaft bevel gear simultaneously It closes.The interface of left differential carrier and right differential carrier is not located on planetary gear shaft mounting hole center in the utility model, But the structure of deviation is taken, it can be processed inside right differential carrier single-piece in this way there are one complete sphere, simultaneously The processing of four planetary gear shaft holes and sphere are processed as clamped one time completion, can be very according to existing process equipment level Easily ensure planetary gear shaft mounting hole center and ball centre do not deviate, opposite two planetary shaft mounting holes Concentricity, the verticality of two neighboring planetary gear shaft hole can ensure in claimed range, be achieved in planetary gear The intersection point of planetary center line is located at the centre of sphere of spherical hollow space after installation is complete, guarantee planetary gear and axle shaft gear Engagement is normal, will not occur gear ablation, planetary gear shaft and planetary gear be sintered together and caused by planetary gear fracture, There are the failures such as abnormal sound when normally travel, effectively avoids the problem that differential mechanism failure in use causes vehicle to be stopped transport.

The shaft includes long axis, the first planetary gear semiaxis and second as a further improvement of the utility model, Planetary gear semiaxis, two of which planetary gear are mounted on by long axis in spherical hollow space, other two planetary gear leads to respectively It crosses the first planetary gear semiaxis and the second planetary gear semiaxis is mounted in spherical hollow space, the both ends of the long axis are located at In two of which shaft mounting hole, connect in the middle part of one end and long axis of the first planetary gear semiaxis and the second planetary gear semiaxis It connects, the other end of the first planetary gear semiaxis and the second planetary gear semiaxis is located in other two shaft mounting hole.This Shaft in application is always divided into three, wherein installing two planetary gears in a shaft, in addition pacifies respectively in two shafts A planetary gear is filled, planetary installation is facilitated.

The first planetary gear semiaxis is multi-diameter shaft as a further improvement of the utility model, is relatively large in diameter The end of one end be provided with the blind hole for installing the second planetary gear semiaxis along its axial direction, and in the first planetary gear semiaxis The one end being relatively large in diameter radially is provided with the first through hole through its both sides, and the first through hole is communicated with blind hole, described Long axis in the middle part of be provided with card slot, the end of the second planetary gear semiaxis be provided with the matched protrusion of card slot, it is described One end of long axis pass through first through hole and card slot thereon is located in first through hole, the second planetary gear semiaxis One end is inserted into blind hole, and the protrusion of its end is matched with card slot.The application on the first planetary gear semiaxis by opening If blind hole and through-hole realize the connection between three shafts.

The second planetary gear semiaxis is far from the first planetary gear semiaxis as a further improvement of the utility model, One end be radially provided with first positioning hole, it is fixed that corresponding with first positioning hole second is provided on the right differential carrier Position hole, the first positioning hole and the interior setting positioning pin of second location hole.Positioning pin is arranged in the application, realizes shaft on the whole Fixation.

As a further improvement of the utility model, planet tooth is provided between the planetary gear and right differential carrier Take turns washer.Planetary gear washer is arranged in the application, avoids wearing between planetary gear and right differential carrier.

Between the left half axle bevel gear and left differential carrier and right side half as a further improvement of the utility model, Axle shaft gear washer is both provided between shaft bevel gears and right differential carrier.Axle shaft gear washer is arranged in the application, avoids semiaxis Abrasion between gear and differential carrier.

It is provided with and spherical shape on the left differential carrier and right differential carrier as a further improvement of the utility model, The grease channel that cavity communicates.Grease channel is arranged in the application, convenient for the flowing of the lubricating oil in spherical hollow space, optimizes ball The lubrication of gear in shape cavity.

In conclusion the utility model has the beneficial effects that：The planetary gear of the inter-wheel differential assembly of the utility model The intersection point of center line is located at the centre of sphere of spherical hollow space, ensures that the engagement of the utility model middle gear is normal, avoids nibbling due to gear Close it is abnormal caused by problem and the utility model structure and assemble method it is all very simple.

Description of the drawings

Fig. 1 is the longitudinal sectional view of the utility model.

Fig. 2 is the B-B sectional views in Fig. 1.

Fig. 3 is the perspective exploded view for reflecting shaft in the application.

Wherein：1, left differential carrier；2, right differential carrier；3, left half axle bevel gear；4, right axle shaft bevel gear；5, planet tooth Wheel；6, dynamic bevel gear；7, spherical hollow space；8, differential bearing；9, shaft mounting hole；901, first rotating shaft mounting hole；902、 Second shaft mounting hole；903, third shaft mounting hole；904, the 4th shaft mounting hole；10, shaft；101, long axis；102, One planetary gear semiaxis；103, the second planetary gear semiaxis；104, blind hole；105, through-hole；106, card slot；107, raised；108、 First positioning hole；109, positioning pin；11, planetary gear washer；12, axle shaft gear washer；13, grease channel；14, differential mechanism Shell connects bolt；15, driven gear installation bolt.

Specific implementation mode

Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.

The technical solution of the present embodiment is a kind of inter-wheel differential assembly, inter-wheel differential as shown in Figure 1, Figure 2 and Figure 3 Assembly, including 4, four left differential carrier 1, right differential carrier 2, left half axle bevel gear 3, right axle shaft bevel gear 5 and of planetary gear Dynamic bevel gear 6, the right differential carrier 2 are detachably arranged on left differential carrier 1,1 He of left differential carrier The spherical hollow space 7 for installing left half axle bevel gear 3, right axle shaft bevel gear 4 and planetary gear 5 is formed between right differential carrier 2, Wherein the left end of left half axle bevel gear 3 is mounted on left differential carrier 1, and right axle shaft bevel gear 4 is mounted on right differential carrier 2, And the tooth of left half axle bevel gear 3 and the tooth of right axle shaft bevel gear 4 are oppositely arranged, the left side and the right side of the left differential carrier 1 Respectively one differential bearing 8 of setting, the dynamic bevel gear 6 are detachably arranged in left differential mechanism on the right side of differential carrier 2 Close to the side of right differential carrier 2 on shell 1, the differential bearing 8, left half axle bevel gear 3, right axle shaft bevel gear 4 and by The center line of dynamic bevel gear 6 overlaps, and opens that there are four the installations of the shaft inside and outside right reducing gearbox on the right differential carrier 2 Hole 9, described four shaft mounting holes 9 be located at two of spherical hollow space 7 it is orthogonal diametrically, described four shafts peaces Dress hole 9 is first rotating shaft mounting hole 901, the second shaft mounting hole 902, third shaft mounting hole 903 and the 4th shaft peace respectively Hole 904 is filled, and the central axis of the plane and dynamic bevel gear 6 where four shaft mounting holes 9, wherein first rotating shaft are pacified Dress hole 901 is oppositely arranged with third shaft mounting hole 903, and the second shaft mounting hole 902 and the 4th shaft mounting hole 904 are set relatively It sets, i.e., first rotating shaft mounting hole 901 and third shaft mounting hole 903 are located at one of spherical hollow space 7 diametrically, the second shaft peace Dress hole 902 and the 4th shaft mounting hole 904 are located at another article of spherical hollow space 7 diametrically, and described four planetary gears 5 are distinguished It is rotatably installed in spherical hollow space 7 by the shaft 10 being arranged in shaft mounting hole 9, and four planetary gears 5 Left side be meshed with left half axle bevel gear 3, the right side of four planetary gears 5 is meshed with right axle shaft bevel gear 4.This Shen Please in the length in its axial direction of right differential carrier 2 be more than the length of left differential carrier 1 in its axial direction so that entire planet Gear 5 and shaft 10 are respectively positioned in right differential carrier 2.

Shaft 10 described herein includes long axis 101, the first planetary gear semiaxis 102 and the second planetary gear semiaxis 103, two of which planetary gear 5 is mounted on by long axis 101 in spherical hollow space 7, other two planetary gear 5 is respectively by the One planetary gear semiaxis 102 and the second planetary gear semiaxis 103 are mounted in spherical hollow space 7, the both ends point of the long axis 101 Wei Yu not be in first rotating shaft mounting hole 901 and third shaft mounting hole 903, the first planetary gear semiaxis 102 and the second planet tooth One end of wheel semiaxis 103 is connect with the middle part of long axis 101, the first planetary gear semiaxis 102 and the second planetary gear semiaxis 103 The other end is located in the second shaft mounting hole 902 and the 4th shaft mounting hole 904.

The present embodiment preferably sets the first planetary gear semiaxis 102 to multi-diameter shaft, the first planetary gear half The end of one end that axis 102 is relatively large in diameter is provided with the blind hole 104 for installing the second planetary gear semiaxis 103 along its axial direction, and And it is radially provided with the first through hole 105 through its both sides in one end that the first planetary gear semiaxis 102 is relatively large in diameter, it is described First through hole 105 communicated with blind hole 104, the middle part of the long axis 101 is provided with card slot 106, second planetary gear The end of semiaxis 103 is provided with passes through first through hole 105 with card slot 106 matched raised 107, one end of the long axis 101 And the card slot 106 at 101 middle part of long axis is located in first through hole 105, and one end of the second planetary gear semiaxis 103 is inserted into In blind hole 104, and the protrusion 107 of 103 end of the second planetary gear semiaxis is located in card slot 106 and is matched with card slot 106.

To realize the fixation of shaft 10 in the application, in the second planetary gear semiaxis 103 far from the first planet tooth One end of wheel semiaxis 102 is radially provided with first positioning hole 108, is provided on the right differential carrier 2 and first positioning hole 108 corresponding second location holes（It is not shown in figure）, positioning pin is set in the first positioning hole 108 and second location hole 109。

The application is provided with planetary gear washer 11, planetary gear between the planetary gear 5 and right differential carrier 2 Face area of the size of washer 11 with planetary gear 5 close to one end of right differential carrier 2 is equal in magnitude, and in planetary gear The second through-hole through its both sides is provided on washer 11（It is not shown in figure）, the shaft 10 is across the second through-hole, realization pair The fixation of planetary gear washer 11.

The present embodiment is between the left half axle bevel gear 3 and left differential carrier 1 and right axle shaft bevel gear 4 and right difference Axle shaft gear washer 12 is both provided between fast device shell 2, left half axle bevel gear 3 and the shape and the number of teeth of right axle shaft bevel gear 4 are equal Identical, side of the left half axle bevel gear 3 far from its tooth is the columned left construction section for being installed with left reducing gearbox 1, Left axle shoulder is formed between left construction section and the tooth of left half axle bevel gear 3, side of the right axle shaft bevel gear 4 far from its tooth is cylinder The right construction section for being installed with right reducing gearbox 2 of shape, right axle is formed between right construction section and the tooth of right axle shaft bevel gear 4 Shoulder, wherein axle shaft gear washer 12 are annular shape, and size is equal with the size of left axle shoulder and right axle shoulder respectively, And it is respectively sleeved at and does on construction section and right construction section, realize the installation of axle shaft gear washer 12.

The present embodiment the left differential carrier 1 with the lubrication communicated with spherical hollow space 7 is provided on right differential carrier 2 Oily channel 13 is conducive to lubricating oil in use and is flowed inside and outside spherical hollow space.

The present embodiment realizes that the concrete structure removably installed between right differential carrier 2 and left differential carrier 1 is：This reality The outer diameter in 2 left side of right differential carrier in example is applied less than the outer diameter on the right side of left differential carrier 1, on the edge on right differential carrier 2 It is circumferentially provided with multiple（Such as eight or 12）First threaded hole（It is not shown in figure）, in left differential carrier 1 On be provided with quantity it is equal with the first screw thread hole number on right differential carrier 2 and it is corresponding with the first threaded hole first installation Through-hole（It is not shown in figure）, connect using in the first installation through-hole and with the differential carrier of the first threaded hole screw-thread fit Right differential carrier 2 is detachably arranged on left differential carrier 1 by connecting bolt 14.The present embodiment realizes dynamic bevel gear 6 and a left side The concrete structure that differential carrier 1 is removably installed is that the side far from tooth is uniform along its circumferencial direction in dynamic bevel gear 6 Be provided with eight to ten six the second threaded holes（It is not shown in figure）, quantity and the second threaded hole are provided on left differential carrier 1 Quantity is equal and corresponding with the second threaded hole the second installation through-hole（It is not shown in figure）, logical in the second installation using setting Dynamic bevel gear 6 is detachably arranged in a left side in hole and with the driven gear installation bolt 15 of the second threaded hole screw-thread fit On differential carrier 1.

The application is mounted on by differential bearing 8 on main reducing gear band differential assembly when in use, by the application, main Subtract band differential assembly to be mounted in vehicle bridge, and left half axle bevel gear 3 and right axle shaft bevel gear 4 are respectively adopted and pass through flower with it The semiaxis of key connection is connect with the wheel hub at vehicle bridge both ends, the dynamic bevel gear 6 in the application and the drive bevel gear phase in vehicle bridge Engagement, drive bevel gear rotation driving dynamic bevel gear 6 rotate, and the power of work, 6 turns of dynamic bevel gear are provided for the application It is dynamic, since dynamic bevel gear 6 and right differential carrier 2 are mounted on by bolt on left differential carrier 1, dynamic bevel gear 6 It drives left differential carrier 1 and right differential carrier 2 while rotating, when the rotating speed of left and right wheels is consistent, left half axle bevel gear 3, the right side Semi-axle bevel gear 4, planetary gear 5, left differential carrier 1 and right differential carrier 2 constitute an entirety, left half axle bevel gear 3, right half It does not relatively rotate between shaft bevel gears 4, planetary gear 5, left differential carrier 1 and right differential carrier 2, and turns when left and right wheels Speed is inconsistent（Car turns to）When, it relatively rotates between left half axle bevel gear 3, right axle shaft bevel gear 4 and planetary gear 5, With planetary gear 5 while rotation, left half axle bevel gear 3, right axle shaft are bored for left half axle bevel gear 3, right axle shaft bevel gear 4 at this time The entirety that gear 4, planetary gear 5, left differential carrier 1 and right differential carrier 2 are constituted turns together with the inner ring of differential bearing 8 It is dynamic.

The advantages of the application is：1. the interface of left differential carrier and right differential carrier is not located at planetary gear shaft installation On the center of hole, but the structure of deviation is taken, can process that there are one complete inside right differential carrier single-piece in this way The processing of sphere while four planetary gear shaft holes and sphere are processed as clamped one time completion, according to existing process equipment Level can easily ensure very much planetary gear shaft mounting hole center and ball centre do not deviate, opposite two planetary gear shafts The concentricity in hole, the verticality of adjacent two planetary gear shaft holes can ensure in theoretical claimed range.

2. left differential carrier and right differential carrier are fixed together by differential carrier installation bolt, to form differential carrier total At；To ensure that the differential bearing at both ends installs concentricity, driven gear mounting surface and the differential bearing at the both ends peace of the diameter of axle Fill the verticality at diameter of axle center, the concentricity of driven gear installation seam allowance and the differential bearing installation diameter of axle at both ends center；It presses Existing general processing technology, it is also necessary to a component processing is carried out, and the structure of the application can very easily implement this technique, Without additionally increasing frock cost.

3. since the entire sphere of the application is respectively positioned on right differential carrier, the interface of left and right shell is moved to the left, then gabarit Size can reduce, and the cavity between driven gear and right differential carrier is made to increase, arrangement, assembly convenient for follow-up peripheral element.

4. planetary gear shaft uses separate structure, four planetary gear shaft holes are solved well and are processed on right shell Existing assembly problem；Simultaneously as using separate structure, avoid existing for existing traditional cross-shaped configuration that geometric tolerance cannot The problem of enough ensureing, because being all d-axis, mechanical processing technique is simple, blank molding is simple, and entire manufacturing cost declines, and produces Product precision has promotion.

The assemble method of inter-wheel differential assembly described herein includes specifically following nine steps：

Step 1, respectively it is arranged a semiaxis on the linkage section of right axle shaft bevel gear 4 and the linkage section of left half axle bevel gear 3 Right axle shaft bevel gear 4 is mounted in right differential carrier 2 by gearset spacer 12, and left half axle bevel gear 3 is mounted on left differential carrier In 1, the method that left half axle bevel gear 3 and right axle shaft bevel gear 4 is separately mounted in left differential carrier 1 and right differential carrier 2 It is the prior art, the present embodiment is not described in detail, and the right differential carrier 2 for being equipped with right axle shaft bevel gear 4 is placed on work top On, and its spherical hollow space 7 is made to be located above.

Step 2, one of planetary gear 5 is set on the smaller one end of 102 diameter of the first planetary gear semiaxis, and The smaller one end of first planetary gear semiaxis, 102 diameter is inserted into the second shaft mounting hole 902.

Step 3, an alternative planetary gear 5, places it on right axle shaft bevel gear 4, and make the planetary gear 5 An adjacent shaft mounting hole 9 of planetary gear 5 in step 2（First rotating shaft through-hole 901）Place, by one end of long axis 101 It is inserted into first rotating shaft mounting hole 901 out of first rotating shaft mounting hole 901 outside case, and long axis 101 is made to sequentially pass through the row First through hole 105 on the mounting hole of star gear 5 and the first planetary gear semiaxis 102.

Step 4, then a planetary gear 5 is taken, by it on right axle shaft bevel gear 4, and pushes long axis 101, makes long axis 101 Across the planetary gear 5 mounting hole and extend into a shaft mounting hole 9 opposite with the shaft mounting hole 9 in step 3 i.e. In third rotary shaft through hole 903.

Step 5, the last one planetary gear 5 is placed on right axle shaft bevel gear 4, by the second planetary gear semiaxis 103 It is inserted into out of the 4th shaft mounting hole 904, and the first planetary gear is stretched into after the mounting hole of the planetary gear 5 in this step In the blind hole 104 of 102 end of semiaxis.

Step 6, long axis 101, and mobile second planetary gear semiaxis 103 are rotated, 103 end of the second planetary gear semiaxis is made Protrusion 107 matched with the card slot 106 on long axis 101.

Step 7, positioning pin 109 is inserted into first positioning hole 108 and second location hole, realizes long axis 101, the first planet The fixation of 103 entirety of gear semiaxis 102 and the second planetary gear semiaxis.

Step 8, by the right differential carrier 2 of step 7 the first threaded hole and do the first installation through-hole that differential mechanism can be on 1 It is corresponding to place, and differential carrier connection bolt 14 is inserted into the first installation through-hole, and differential carrier connection bolt 14 is turned, make It is closed with the first corresponding threaded holes, by right differential carrier 2 be mounted on left differential mechanism can on, and adopt and use passive tooth in a like fashion It takes turns installation bolt 15 dynamic bevel gear 6 is mounted on left differential carrier 1.

Step 9, one differential bearing 8 is respectively installed in the right end of the left end of left differential carrier 1 and right differential carrier 2, it is poor The installation of fast device bearing 8 is also the prior art, and it will not go into details for the present embodiment.

The present embodiment in step 1 between left half axle bevel gear 3 and left differential carrier 1 and right axle shaft bevel gear 4 with it is right Axle shaft gear washer 12 is both provided between differential carrier 2, in step 2, step 3, step 4 and step 5 planetary gear 5 close to right One end installation planetary gear washer 11 of differential carrier 2, specifically can be before the installation of planetary gear 5, first by planetary gear pad Circle 11 is pasted onto on the end face of planetary gear 5.The improvement of the present processes is the step of installing, wherein planetary gear 5 Fixation etc. after being installed with shaft 10, is the prior art, and not this Applicant's Abstract graph improvement, therefore the application is not described in detail.

It is the prior art not do the part illustrated in description above, or can be realized by the prior art. And the preferable case study on implementation that case is only the utility model is embodied described in the utility model, not it is used for limiting The scope of the utility model.Equivalent changes and modifications made by i.e. all contents according to present utility model application the scope of the claims, It all should be used as the technology scope of the utility model.

Claims (7)

1. a kind of inter-wheel differential assembly, it is characterised in that：Including left differential carrier（1）, right differential carrier（2）, left half axle cone Gear（3）, right axle shaft bevel gear（4）, four planetary gears（5）And dynamic bevel gear（6）, the right differential carrier（2）It can Dismounting is mounted on left differential carrier（1）On, the left differential carrier（1）With right differential carrier（2）Between formed for pacifying Fill left half axle bevel gear（3）, right axle shaft bevel gear（4）And planetary gear（5）Spherical hollow space（7）, the dynamic bevel gear （6）It is detachably arranged in left differential carrier（1）Upper close right differential carrier（2）Side, the left half axle bevel gear （3）, right axle shaft bevel gear（4）And dynamic bevel gear（6）Center line overlap, the right differential carrier（2）On open there are four Shaft mounting hole inside and outside right reducing gearbox（9）, four shaft mounting holes（9）Positioned at spherical hollow space（7）Two It is a it is orthogonal diametrically, and four shaft mounting holes（9）The plane and dynamic bevel gear at place（6）Center line hang down Directly, four planetary gears（5）Respectively by being arranged in shaft mounting hole（9）Interior shaft（10）It is rotatably installed in spherical shape Cavity（7）Four interior and described planetary gears（5）Simultaneously with left half axle bevel gear（3）With right axle shaft bevel gear（4）Phase Engagement.

2. inter-wheel differential assembly according to claim 1, it is characterised in that：The shaft（10）Including long axis （101）, the first planetary gear semiaxis（102）With the second planetary gear semiaxis（103）, two of which planetary gear（5）Pass through length Axis（101）Mounted on spherical hollow space（7）It is interior, other two planetary gear（5）Pass through the first planetary gear semiaxis respectively（102）With Second planetary gear semiaxis（103）Mounted on spherical hollow space（7）Interior, described long axis（101）Both ends be located at wherein two A shaft mounting hole（9）It is interior, the first planetary gear semiaxis（102）With the second planetary gear semiaxis（103）One end and long axis （101）Middle part connection, the first planetary gear semiaxis（102）With the second planetary gear semiaxis（103）The other end be located at Other two shaft mounting hole（9）It is interior.

3. inter-wheel differential assembly according to claim 2, it is characterised in that：The first planetary gear semiaxis （102）For multi-diameter shaft, the end of the one end being relatively large in diameter is provided with along its axial direction for installing the second planetary gear semiaxis（103） Blind hole（104）, and in the first planetary gear semiaxis（102）The one end being relatively large in diameter radially is provided with through its both sides First through hole（105）, the first through hole（105）With blind hole（104）It communicates, the long axis（101）Middle part be provided with card Slot（106）, the second planetary gear semiaxis（103）End be provided with and card slot（106）Matched protrusion（107）, institute The long axis stated（101）One end pass through first through hole（105）And card slot thereon（106）Positioned at first through hole（105）It is interior, institute The the second planetary gear semiaxis stated（103）One end be inserted into blind hole（104）It is interior, and the protrusion of its end（107）With card slot （106）It matches.

4. inter-wheel differential assembly according to claim 3, it is characterised in that：The second planetary gear semiaxis （103）Far from the first planetary gear semiaxis（102）One end be radially provided with first positioning hole（108）, the right differential Device shell（2）On be provided with and first positioning hole（108）Corresponding second location hole, the first positioning hole（108）With second Positioning pin is set in location hole（109）.

5. inter-wheel differential assembly according to claim 1, it is characterised in that：The planetary gear（5）With right differential Device shell（2）Between be provided with planetary gear washer（11）.

6. inter-wheel differential assembly according to claim 1, it is characterised in that：The left half axle bevel gear（3）With a left side Differential carrier（1）Between and right axle shaft bevel gear（4）With right differential carrier（2）Between be both provided with axle shaft gear washer （12）.

7. inter-wheel differential assembly according to any one of claims 1 to 6, it is characterised in that：The left differential carrier （1）With right differential carrier（2）On be provided with the grease channel communicated with spherical hollow space（13）.