CN207814363U - Main reducing gear band differential assembly - Google Patents
Main reducing gear band differential assembly Download PDFInfo
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- CN207814363U CN207814363U CN201820025250.4U CN201820025250U CN207814363U CN 207814363 U CN207814363 U CN 207814363U CN 201820025250 U CN201820025250 U CN 201820025250U CN 207814363 U CN207814363 U CN 207814363U
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Abstract
The utility model discloses a kind of main reducing gear band differential assembly, including main gearbox assembly and inter-wheel differential assembly, main gearbox assembly includes final drive casing and drive bevel gear, and drive bevel gear is mounted on one end of final drive casing；Inter-wheel differential assembly includes left differential carrier and right differential carrier, left half axle bevel gear, right axle shaft bevel gear, four planetary gears and dynamic bevel gear, spherical hollow space is formed between left differential carrier and right differential carrier, dynamic bevel gear is mounted on left differential carrier, it is provided with shaft mounting hole on right differential carrier, four planetary gears are rotatably installed in by the shaft being arranged in shaft mounting hole in spherical hollow space, four planetary gears are meshed with left half axle bevel gear and right axle shaft bevel gear simultaneously, and dynamic bevel gear is meshed with drive bevel gear.The utility model has the beneficial effects that：The intersection point of the center planetary gear line of the inter-wheel differential assembly of the utility model is located at the centre of sphere of spherical hollow space, ensures that the engagement of the utility model middle gear is normal.
Description
Technical field
The utility model is related to a kind of main reducing gear band 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
Should form a complete sphere four planetary gear installation positions), four planetary gear shaft hole centers are in technique
It is difficult to ensure that in sphere centre；Planetary gear shaft is a cross-shaped configuration：To ensure that it is opposite that normal use needs to ensure
The concentricity of two axis centers, it is two weeks adjacent between verticality error it is the smaller the better；But it is limited by heat-treatment distortion and machinery
The limitation of processing technology, required geometric tolerance is difficult to control and the consistency of batch is also very poor.
If both sides hemisphere cannot form a complete sphere or planetary gear shaft hole not on the centre of sphere；Then or 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 be stopped transport.
On the other hand, the engine power of commercial vehicle is also constantly being promoted, to meet the output torque requirement of engine,
Correspondingly, the torque that main reducing gear can be born with differential assembly in drive axle is required to need Synchronous lifting, to meet the requirements,
The intensity for most importantly promoting active and passive gear secondary (driving gear+driven gear is known as active and passive gear pair), simply does
Method is exactly to increase the theoretical outer diameter of driven gear, but simply increase gear theory outer diameter, directly brings the upper of manufacturing cost
It rises, the increase of assembly weight (unsprung mass for increasing vehicle), occupancy chassis space increases, the passability of influence vehicle is (liftoff
Gap reduces) and a series of problems, such as the suspension arrangement of chassis.In addition, because main reducing gear band differential assembly is in actual use process
The load that middle left differential bearing and right differential bearing are born is different, and the design of traditional structure is simply left differential
Device bearing and right differential bearing are designed as same model, and (main cause is final drive casing, differential carrier blank moulding process
Simply, mechanical processing technique is convenient)；Left differential bearing can not be done with right differential bearing in actual use in this way
To equivalent life, always the left differential bearing at the driven gear back side first damages, and virtually increases use cost and maintenance cost.
Invention content
The purpose of this utility model is to provide a kind of main reducing gear band differential assembly, solves in the prior art due to planet
The center line intersection point of gear is misaligned with the centre of sphere of the spherical hollow space of differential carrier and planetary gear is caused to be engaged with axle shaft gear
Incorrect technological deficiency.
To solve the above problems, technical solution adopted in the utility model is：A kind of main reducing gear band differential assembly,
Including main gearbox assembly and inter-wheel differential assembly, the main gearbox assembly includes final drive casing and active conical tooth
Wheel, the drive bevel gear are rotatably installed in one end of final drive casing；The inter-wheel differential assembly includes that rotation is set
Set left differential carrier and right differential carrier, left half axle bevel gear, right axle shaft bevel gear, four planet teeth on final drive casing
Wheel and dynamic bevel gear, the right differential carrier be detachably arranged on left differential carrier, the left differential carrier and
It is formed between right differential carrier for installing left half axle bevel gear, right axle shaft bevel gear and planetary spherical hollow space, it is described
Dynamic bevel gear be detachably arranged on left differential carrier close to right differential carrier side, the left half axle bore tooth
Wheel, right axle shaft bevel gear and dynamic bevel gear center line overlap, open that there are four run through right deceleration on the right differential carrier
Shaft mounting hole inside and outside device shell, described four shaft mounting holes be located at two of spherical hollow space it is orthogonal diametrically,
And the central axis of the plane and dynamic bevel gear where four shaft mounting holes, described four planetary gears lead to respectively
The shaft being arranged in shaft mounting hole is crossed to be rotatably installed in spherical hollow space, and four planetary gears simultaneously with
Left half axle bevel gear and right axle shaft bevel gear are meshed, and the dynamic bevel gear is meshed with drive bevel gear.This practicality is new
The interface of left differential carrier and right differential carrier is not located on planetary gear shaft mounting hole center in type, but is taken partially
From structure, can be processed inside right differential carrier single-piece in this way there are one complete sphere while four planetary gears
The processing of axis hole and the clamped one time that is processed as of sphere are completed, and can easily ensure to go very much according to existing process equipment level
Star gear shaft mounting hole center do not deviate with ball centre, concentricity, the phase of opposite two planetary shaft mounting holes
The verticality of adjacent two planetary gear shaft holes can ensure in claimed range, row after being achieved in planetary gear installation is complete
The friendship of the center line of star gear is fallen to be placed exactly at the centre of sphere of spherical hollow space, and guarantee planetary gear engages just with axle shaft gear
Often, will not occur gear ablation, planetary gear shaft and planetary gear be sintered together and caused by planetary gear fracture, normal row
There are the failures such as abnormal sound when sailing, effectively avoids the problem that differential mechanism failure in use causes vehicle to be stopped transport, the master in the application
Dynamic bevel gear is meshed with dynamic bevel gear, and drive bevel gear rotation realizes the application's for driving dynamic bevel gear to rotate
Normal work.
It is removably provided with bearing block on the final drive casing as a further improvement of the utility model, institute
The drive bevel gear stated is held by two main pinions on bearing block and is rotatably installed on final drive casing.The application is logical
It crosses bearing block to hold with main pinion, realizes the relative rotation of drive bevel gear and final drive casing.
Adjacent main pinion is arranged spacer ring as a further improvement of the utility model, between holding, and the two of the spacer ring
The inner ring held respectively with two main pinions is held to contact.The spacer ring adjustment phase of different-thickness can be used by the way that spacer ring is arranged in the application
Two adjacent main pinions hold between pretightning force.
Further include main shaft oil sealing as a further improvement of the utility model, the main shaft oil sealing is arranged in bearing block
The upper side far from inter-wheel differential assembly.Main shaft oil sealing is arranged in the application, enhances sealing of the main reducing gear with differential assembly
Property, prevent oil leakage.
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 second location hole the first positioning pin of interior setting.The first positioning pin is arranged in the application, realizes and turns
The fixation of axis on the whole.
As a further improvement of the utility model, planet tooth is provided between the planetary gear and right differential carrier
Washer is taken turns, is all provided between the left half axle bevel gear and left differential carrier and between right axle shaft bevel gear and right differential carrier
It is equipped with axle shaft gear washer.Planetary gear washer is arranged in the application, avoids wearing between planetary gear and right differential carrier,
Axle shaft gear washer is set, the abrasion between axle shaft gear and differential carrier is avoided.
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 first grease channel that cavity communicates.Grease channel is arranged in the application, convenient for the flowing of lubricating oil in internal cavities, is conducive to
The lubrication of gear in spherical hollow space.
As the further improvement of the utility model, the left differential carrier and right differential carrier pass through differential respectively
Device bearing is rotatably installed on final drive casing, the left side of the left differential carrier and the respectively setting one of the right side of right differential carrier
A adjusting nut with the pretightning force for adjusting differential bearing of final drive casing screw-thread fit.The application is adjusted by being arranged
Whole nut enhances the compactedness of the application to adjust the pretightning force of differential bearing.
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.
Description of the drawings
Fig. 1 is the longitudinal sectional view for reflecting inter-wheel differential assembly in 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.
Fig. 4 is the structural schematic diagram of the application.
Fig. 5 is the structural schematic diagram for reflecting planetary gear washer in the application.
Fig. 6 is the C-C sectional views of Fig. 5.
Fig. 7 is the structural schematic diagram for reflecting axle shaft gear washer in the application.
Fig. 8 is the D-D sectional views of Fig. 7.
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；111, the second grease channel；121、
Third grease channel；122, the 4th grease channel；123, dowel hole；124, the second positioning pin；13, the first lubricating oil is logical
Road；14, differential carrier connects bolt；15, driven gear installation bolt；16, final drive casing；17, drive bevel gear；18, axis
Bearing；19, main pinion is held；20, spacer ring；21, main shaft oil sealing；22, adjusting nut；23, bearing block installation bolt；24, outside main tooth
Bearing；25, main tooth inner bearing；26, guide bearing chock；27, guide bearing；28, external splines；29, flange assembly；30, main tooth lock
Tight nut.
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Main reducing gear band differential assembly as shown in Figure 4, including main gearbox assembly and inter-wheel differential assembly.
The main gearbox assembly includes final drive casing 16 and drive bevel gear 17,17 turns of the drive bevel gear
Dynamic one end for being mounted on final drive casing 16, it is specific that the application realizes that drive bevel gear 17 is rotatablely installed with final drive casing 16
Structure is：One end far from inter-wheel differential assembly on the final drive casing 16 is provided with drive bevel gear mounting hole（In figure
It is not shown）, bearing block 18 is removably provided with by bearing block installation bolt 23 in drive bevel gear mounting hole, it is described
Bearing block installation bolt 23 is distributed around the center line of drive bevel gear 17 at circumferencial direction, along initiative taper on bearing block 18
The axial direction setting of gear holds 19 there are two main pinion, and it is in main tooth outer bearing 24 and main tooth respectively that the two main pinions, which hold 19,
The outer ring of bearing 25, main tooth outer bearing 24 and main tooth inner bearing 25 is interference fitted with bearing block 18, the drive bevel gear 17
Rotation axis and main tooth outer bearing 24 and the inner ring of main tooth inner bearing 25 be interference fitted, guiding is provided in final drive casing 16
Bearing is installed（It is not shown in figure）Guide bearing chock 26, guide bearing 27 is set in guide bearing chock 26, guide bearing 27
Outer ring and guide bearing mounting hole are interference fitted, the rotation axis of the drive bevel gear 17 far from main pinion hold 19 one end with
The inner ring of guide bearing 27 is interference fitted, and the both ends of the rotation axis of such drive bevel gear 17 are fixed, and prevent active conical tooth
Wheel 17 is swung, and influences its engagement.Spacer ring 20 is arranged in the application between main tooth outer bearing 24 and main tooth inner bearing 25, described
The both ends of spacer ring 20 19 inner ring held with two main pinions respectively contact.
External splines 28 is arranged in the one end of the application far from inter-wheel differential assembly in the rotation axis of drive bevel gear 17, outside
External screw thread is arranged in the outside of spline 28（It is not shown in figure）, the application is arranged flange assembly 29, is provided with and runs through on flange assembly 29
The flange assembly mounting hole of its both sides（It is not shown in figure）, the flange assembly mounting hole is stepped hole, and the flange is total
At installation bore dia smaller one end, internal spline is set（It is not shown in figure）, the internal spline matches with external splines 28, institute
The external screw thread stated is located at one end that flange assembly mounting hole is relatively large in diameter, and is provided with and its screw-thread fit on external screw thread
Main tooth locking nut 30.To enhance the sealing effect of the application, the application is provided with for sealed bearing 18 and flange assembly
The side far from inter-wheel differential assembly is arranged on bearing block 18 in 29 main shaft oil sealing 21, the main shaft oil sealing 21.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the inter-wheel differential assembly in the application includes left differential carrier 1, right differential
Device shell 2, left half axle bevel gear 3,4, four planetary gears 5 of right axle shaft bevel gear and dynamic bevel gear 6, the right differential carrier
2 are detachably arranged on left differential carrier 1, are formed between the left differential carrier 1 and right differential carrier 2 for installing a left side
The spherical hollow space 7 of semi-axle bevel gear 3, right axle shaft bevel gear 4 and planetary gear 5, the left end of wherein left half axle bevel gear 3 are mounted on
On left differential carrier 1, right axle shaft bevel gear 4 is mounted on right differential carrier 2, and the tooth and right axle shaft of left half axle bevel gear 3
The tooth of bevel gear 4 is oppositely arranged, and a differential is respectively arranged in the left side of the left differential carrier 1 and the right side of right differential carrier 2
Device bearing 8, the dynamic bevel gear 6 are detachably arranged on left differential carrier 1 close to the side of right differential carrier 2, institute
The center line of differential bearing 8, left half axle bevel gear 3, right axle shaft bevel gear 4 and the dynamic bevel gear 6 stated overlaps, the right side
It is opened on differential carrier 2 there are four the shaft mounting hole 9 inside and outside right reducing gearbox, described four shaft mounting holes 9 are located at
Two of spherical hollow space 7 it is orthogonal diametrically, described four shaft mounting holes 9 be respectively first rotating shaft mounting hole 901,
Second shaft mounting hole 902, third shaft mounting hole 903 and the 4th shaft mounting hole 904, and four 9 institutes of shaft mounting hole
Plane and dynamic bevel gear 6 central axis, wherein first rotating shaft mounting hole 901 and 903 phase of third shaft mounting hole
To setting, the second shaft mounting hole 902 and the 4th shaft mounting hole 904 are oppositely arranged, i.e. first rotating shaft mounting hole 901 and third
Shaft mounting hole 903 is located at one of spherical hollow space 7 diametrically, the second shaft mounting hole 902 and the 4th shaft mounting hole 904
Diametrically in another of spherical hollow space 7, described four planetary gears 5 are turned by what is be arranged in shaft mounting hole 9 respectively
Axis 10 is rotatably installed in spherical hollow space 7, and the left side of four planetary gears 5 is nibbled with 3 phase of left half axle bevel gear
It closes, the right side of four planetary gears 5 is meshed with right axle shaft bevel gear 4.Right differential carrier 2 in the application is in its axial direction
Length be more than the length of left differential carrier 1 in its axial direction so that it is poor that entire planetary gear 5 and shaft 10 are respectively positioned on right axle shaft
In fast device shell 2.
The application is provided with the differential assembly installation of left and right two in the one end of final drive casing 16 far from drive bevel gear 17
Hole（It is not shown in figure）, outer ring and the differential carrier mounting hole transition of the differential bearing 8 coordinate, pacify in differential assembly
The dress one end of hole far from shaft 10 is provided with internal thread, and is provided in differential assembly mounting hole matched with internal thread
Adjusting nut 22 passes through the pretightning force of the adjusting nut 22 at both ends tightened degree and adjust differential bearing 8.
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）, the first positioning hole 108 and the interior setting first of second location hole are fixed
Position pin 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, as shown in Figure 5 and Figure 6, the application be provided in planet gearset spacer 11 it is multiple through its two
The quantity of second grease channel 111 of side, preferred second grease channel of the application 111 is four, four second lubrications
Oily channel 111 is uniformly distributed around shaft 10 at circumferencial direction.
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, as shown in Figure 7 and Figure 8, this
The both sides of axle shaft gear washer 12 have the third grease channel 121 of annular in application and the 4th lubricating oil of annular leads to
The outer wall in road 122,121 side of third grease channel intersects with the external cylindrical surface of axle shaft gear washer 12, third profit
The inner wall of 121 other side of oil pathway intersects with the inner cylinder face of axle shaft gear washer 12, and such third grease channel 121 is real
It is now communicated with 12 inner cylinder face of axle shaft gear washer and external cylindrical surface, for being connect with left differential carrier 1 to left half axle bevel gear 3
Place and right axle shaft bevel gear 4 add lubricating oil with 2 junction of right differential carrier, are lubricated to it, the in the application the 4th
Grease channel 122 and projection of the third grease channel 121 on the perpendicular where shaft are symmetrical, and two
The intersection of person's projection is provided with the dowel hole 123 through axle shaft gear washer 12, and the axle shaft gear washer 12 is by setting
The second positioning pin 124 set in dowel hole 123 is separately fixed on left differential carrier 1 and right differential carrier 2, is convenient for semiaxis
The installation of gearset spacer 12, the application have third grease channel 121 and the 4th in the both sides of axle shaft gear washer 12
Grease channel 122 can be lubricated the left half axle bevel gear 3 of 12 both sides of axle shaft gear washer and right axle shaft bevel gear 4.
The present embodiment the left differential carrier 1 with first communicated with spherical hollow space 7 is provided on right differential carrier 2
Grease channel 13 adds lubricating oil for each gear into spherical hollow space 7.
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
Circumferentially some be provided with it is multiple（Such as eight or 12）First threaded hole（It is not shown in figure）, in left differential
It is equal with the first screw thread hole number on right differential carrier 2 and corresponding with the first threaded hole that quantity is provided on device shell 1
One installation through-hole（It is not shown in figure）, using in the first installation through-hole and with the differential of the first threaded hole screw-thread fit
Right differential carrier 2 is detachably arranged on left differential carrier 1 by device shell connection bolt 14.The present embodiment realizes dynamic bevel gear
6 concrete structures removably installed with left differential carrier 1 be in dynamic bevel gear 6 side far from tooth along its circumferencial direction
Uniformly it is provided with eight to ten six the second threaded holes（Figure is always not shown）, quantity and the second screw thread are provided on left differential carrier 1
The quantity in hole is equal and corresponding with the second threaded hole the second installation through-hole（It is not shown in figure）, using setting in the second peace
It fills in through-hole and is removably installed with the driven gear installation bolt 15 of the second threaded hole screw-thread fit by dynamic bevel gear 6
On left differential carrier 1.
The application when in use, the application is mounted in vehicle bridge, and left half axle bevel gear 3 and right axle shaft bevel gear 4
The semiaxis connecting by spline with it is respectively adopted to connect with the wheel hub at vehicle bridge both ends, the dynamic bevel gear 6 in the application and master
Dynamic bevel gear 17 is meshed, and drive bevel gear rotation driving dynamic bevel gear 6 rotates, and the power of work, quilt are provided for the application
Dynamic bevel gear 6 rotates, since dynamic bevel gear 6 and right differential carrier 2 are mounted on by bolt on left differential carrier 1,
Dynamic bevel gear 6 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, right axle shaft bevel gear 4, planetary gear 5, left differential carrier 1 and right differential carrier 2 constitute an entirety, left half axle cone
It is not relatively rotated between gear 3, right axle shaft bevel gear 4, planetary gear 5, left differential carrier 1 and right differential carrier 2, and when a left side
The rotating speed of right wheel is inconsistent（Car turns to）When, occur between left half axle bevel gear 3, right axle shaft bevel gear 4 and planetary gear 5
It relatively rotates, left half axle bevel gear 3, right axle shaft bevel gear 4 and planetary gear 5 are while rotation at this time, left half axle bevel gear
What 3, right axle shaft bevel gear 4, planetary gear 5, left differential carrier 1 and right differential carrier 2 were constituted is whole with differential bearing 8
Inner ring rotates together, and inter-wheel differential assembly rotation, driving is mounted on the vehicle wheel rotation on wheel hub.The application preferably will be actively
The facewidth of bevel gear 17 is set greater than the facewidth of dynamic bevel gear 16, and the whole of the tooth of dynamic bevel gear 16 is and active conical tooth
Wheel 17 is meshed, to promote active and passive gear intensity to meet the requirement of assembly bigger input torque.
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, what four planetary gear shaft holes of solution were processed on right shell well asks
Topic；Simultaneously as using separate structure, avoid that geometric tolerance existing for existing traditional cross-shaped configuration cannot be guaranteed asks
Topic, because being all d-axis, mechanical processing technique is simple, blank molding is simple, and entire manufacturing cost declines, and Product Precision carries
It rises.
The assemble method of inter-wheel differential assembly in the application includes specifically following nine steps：Step 1, right half
It is respectively arranged an axle shaft gear washer 12 on the linkage section of shaft bevel gears 4 and the linkage section of left half axle bevel gear 3, right axle shaft is bored
Gear 4 is mounted in right differential carrier 2, left half axle bevel gear 3 is mounted in left differential carrier 1, by 3 He of left half axle bevel gear
Right axle shaft bevel gear 4 is separately mounted to the method system prior art in left differential carrier 1 and right differential carrier 2, and the present embodiment is not
Detailed description is given, the right differential carrier 2 for being equipped with right axle shaft bevel gear 4 is placed on work top, and makes its spherical hollow space 7
In top.
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, the first positioning pin 109 is inserted into first positioning hole 108 and second location hole, realizes long axis 101, first
The fixation of 103 entirety of planetary 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, the right end of the left end of left differential carrier 1 and right differential carrier 2 is rotatably arranged on by differential bearing 8
On final drive casing 16, the installation of differential 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.
The utility model is not under the premise of increasing driven gear theory outer diameter, by increasing to driven gear center of circle direction
The innovative design of gear promotes active and passive gear intensity to meet the requirement of assembly bigger input torque, and right differential carrier is set
Meter so that planetary gear shaft mounting hole is arranged on right shell, reduces the contour dimension of differential assembly to meet general assembly
Space requirement, to meet the equivalent life requirement of left differential bearing and right differential bearing, left differential mechanism in the utility model
The model of bearing and the model of right differential bearing setting it is inconsistent, left differential bearing is arranged to than right differential bearing
Dynamic loading, dead load model bigger than normal.
When the differential assembly normal work of the utility model, because planetary gear, axle shaft gear are revolving meber, there is drive
The trend of planetary gear washer, axle shaft gear washer synchronous revolving, planetary gear washer and axle shaft gear washer are gone in addition to adjustment
It star gear and the backlash of axle shaft gear and engages outside the marking, can also play the role of that differential carrier is delayed to wear；This reality
It is planetary gear washer and axle shaft gear gasket wear, the replacement of planetary gear washer and axle shaft gear washer with novel effect
Cost is not high, and differential carrier is not worn, and reduces the cost and service life of the application；By dynamic analysis of motion, half axle gear
Wheel has the tendency that the revolution of axle shaft gear washer, planetary gear is driven to have the tendency that driving the revolution of planetary gear washer, to avoid this
Positioning pin is arranged in axle shaft gear washer to prevent to rotate in the generation of trend.
The measure that planetary gear washer uses in the utility model is that incomplete circle, a planet wheel spindle are corresponding for endoporus
There are one planes for position setting；The measure that axle shaft gear washer is taken increases by two dowel holes, in the phase of left and right differential carrier
Position is answered to be also equipped with positioning pin mounting hole, leading to more positioning pins makes planetary gear washer that can not rotate.
Planetary gear washer and axle shaft gear washer are both provided with grease channel, it is ensured that planetary gear washer with it is poor
Having between fast device shell and planetary gear between sufficient lubrication, axle shaft gear washer and differential carrier and axle shaft gear has abundant profit
It is sliding, promote differential assembly use reliability and durability.
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 (10)
1. a kind of main reducing gear band differential assembly, including main gearbox assembly and inter-wheel differential assembly, it is characterised in that：Institute
The main gearbox assembly stated includes final drive casing（16）And drive bevel gear（17）, the drive bevel gear（17）Rotation peace
Mounted in final drive casing（16）One end；The inter-wheel differential assembly includes being rotatably arranged on final drive casing（16）On
Left differential carrier（1）With right differential carrier（2）, left half axle bevel gear（3）, right axle shaft bevel gear（4）, four planetary gears（5）
And dynamic bevel gear（6）, the right differential carrier（2）It is detachably arranged in left differential carrier（1）On, the left differential
Device shell（1）With right differential carrier（2）Between formed for installing left half axle bevel gear（3）, right axle shaft bevel gear（4）With planet tooth
Wheel（5）Spherical hollow space（7）, the dynamic bevel gear（6）It is detachably arranged in left differential carrier（1）Upper close right differential
Device shell（2）Side, the left half axle bevel gear（3）, right axle shaft bevel gear（4）And dynamic bevel gear（6）Center line weight
It closes, the right differential carrier（2）On open that there are four the shaft mounting holes inside and outside the right reducing gearbox（9）, described four
Shaft mounting hole（9）Positioned at spherical hollow space（7）Two it is orthogonal diametrically, and four shaft mounting holes（9）Place
Plane and dynamic bevel gear（6）Central axis, described four planetary gears（5）It is installed respectively in shaft by setting
Hole（9）Interior shaft（10）It is rotatably installed in spherical hollow space（7）Four interior and described planetary gears（5）Simultaneously with a left side
Semi-axle bevel gear（3）With right axle shaft bevel gear（4）It is meshed, the dynamic bevel gear（6）With drive bevel gear（17）Mutually nibble
It closes.
2. main reducing gear band differential assembly according to claim 1, it is characterised in that：The final drive casing（16）
On be removably provided with bearing block（18）, the drive bevel gear（17）By being mounted on bearing block（18）On two with
On main pinion hold（19）It is rotatably installed in final drive casing（16）On.
3. main reducing gear band differential assembly according to claim 2, it is characterised in that：Adjacent main pinion is held（19）It
Between spacer ring is set（20）, the spacer ring（20）Both ends held respectively with two main pinions（19）Inner ring contact.
4. main reducing gear band differential assembly according to claim 2, it is characterised in that：It further include main shaft oil sealing（21）,
The main shaft oil sealing（21）It is arranged in bearing block（18）The upper side far from inter-wheel differential assembly.
5. main reducing gear band differential assembly according to claim 1, it is characterised in that：The shaft（10）Including length
Axis（101）, the first planetary gear semiaxis（102）With the second planetary gear semiaxis（103）, two of which planetary gear（5）Pass through
Long 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 the second planetary gear semiaxis（103）Mounted on spherical hollow space（7）Interior, described long axis（101）Both ends be located at wherein
Two shaft mounting holes（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.
6. main reducing gear band differential assembly according to claim 5, it is characterised in that：First planetary gear half
Axis（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 it
The first through hole of both sides（105）, the first through hole（105）With blind hole（104）It communicates, the long axis（101）Middle part
It is provided with card slot（106）, the second planetary gear semiaxis（103）End be provided with and card slot（106）Matched protrusion
（107）, the long axis（101）One end pass through first through hole（105）And card slot thereon（106）Positioned at first through hole
（105）The second interior, described planetary gear semiaxis（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.
7. main reducing gear band differential assembly according to claim 6, it is characterised in that：Second planetary gear half
Axis（103）Far from the first planetary gear semiaxis（102）One end be radially provided with first positioning hole（108）, the right difference
Fast device shell（2）On be provided with and first positioning hole（108）Corresponding second location hole, the first positioning hole（108）With
First positioning pin is set in two location holes（109）.
8. main reducing gear band differential assembly according to claim 5, it is characterised in that：The planetary gear（5）With
Right differential carrier（2）Between be provided with planetary gear washer（11）, the left half axle bevel gear（3）With left 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）.
9. according to claim 5 to 8 any one of them main reducing gear band differential assembly, it is characterised in that：The left difference
Fast device shell（1）With right differential carrier（2）On be provided with the first grease channel communicated with spherical hollow space（13）.
10. according to claim 1 to 8 any one of them main reducing gear band differential assembly, it is characterised in that：The left difference
Fast device shell（1）With right differential carrier（2）Pass through differential bearing respectively（8）It is rotatably installed in final drive casing（16）On, it is described
Left differential carrier（1）Left side and right differential carrier（2）Right side respectively setting one and final drive casing（16）Screw-thread fit
For adjusting differential bearing（8）Pretightning force adjusting nut（22）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820025250.4U CN207814363U (en) | 2018-01-08 | 2018-01-08 | Main reducing gear band differential assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820025250.4U CN207814363U (en) | 2018-01-08 | 2018-01-08 | Main reducing gear band differential assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814363U true CN207814363U (en) | 2018-09-04 |
Family
ID=63326487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820025250.4U Active CN207814363U (en) | 2018-01-08 | 2018-01-08 | Main reducing gear band differential assembly |
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| Country | Link |
|---|---|
| CN (1) | CN207814363U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939938A (en) * | 2018-01-08 | 2018-04-20 | 南京创捷和信汽车零部件有限公司 | Main reducing gear band differential assembly |
| DE102018222067B4 (en) | 2018-12-18 | 2021-08-05 | Zf Friedrichshafen Ag | Differential gear with locking element |
-
2018
- 2018-01-08 CN CN201820025250.4U patent/CN207814363U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939938A (en) * | 2018-01-08 | 2018-04-20 | 南京创捷和信汽车零部件有限公司 | Main reducing gear band differential assembly |
| DE102018222067B4 (en) | 2018-12-18 | 2021-08-05 | Zf Friedrichshafen Ag | Differential gear with locking element |
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