CN201457042U - Vehicle master-drive assembly directly assembled by planetary gear shaft and driven gear - Google Patents
Vehicle master-drive assembly directly assembled by planetary gear shaft and driven gear Download PDFInfo
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- CN201457042U CN201457042U CN2009201239550U CN200920123955U CN201457042U CN 201457042 U CN201457042 U CN 201457042U CN 2009201239550 U CN2009201239550 U CN 2009201239550U CN 200920123955 U CN200920123955 U CN 200920123955U CN 201457042 U CN201457042 U CN 201457042U
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- gear
- compensating
- gear shaft
- driven gear
- shaft
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Abstract
The utility model discloses a vehicle master-drive assembly directly assembled by a planetary gear shaft and a driven gear, which comprises a main reducing gear and a differential gear, wherein the main reducing gear comprises a pair of driving gear and driven gear which mesh with each other; the differential gear comprises planetary gears, a planetary gear shaft, half axle gears and a differential gear casing; the planetary gears are respectively installed on the corresponding shaft necks of the planetary gear shaft to form a planetary gear train; the half axle gears are installed on both sides of the planetary gear train and positioned by the differential gear casing; a radial plate of the driven gear is provided with a groove which matches with the shaft head structure of the planetary gear shaft; the shaft head of the planetary gear shaft is directly installed in the groove; and the differential gear casing is fixedly connected with the radial plate. The utility model has the advantages of simple structure and material saving, and the differential gear casing does not transmit torque, thereby being more beneficial to the lubrication and the heat emission of the gears in the differential gear. The utility model can be widely used in the fields of mechanical engineering and vehicle engineering, such as automobiles, agricultural transporters, wheeled engineering machines, other wheeled machines and the like.
Description
Technical field
The utility model relates to a kind of vehicle drive axle main driving assembly, is mainly used in automobile, agriculture truck, industrial wheeled equipment and other wheel machine, belongs to mechanical engineering and Vehicle Engineering field.
Background technology
The main driving assembly of vehicle drive axle is the important component part of vehicle driveline, mainly is made up of main reduction gear and diff.Main reduction gear is made up of the driving gear and the driven gear of pair of meshing, plays reduction of speed and increases and turn round, and the vehicle for the engine behind front wheel rear-axle drive also plays a part the transmission of power direction is changed 90 ° simultaneously.Diff mainly is made up of compensating-gear shaft, planetary wheel, axle side gear, housing etc., main effect is that the drive wheel of realizing the drive axle both sides is realized differential at Ackermann steer angle, and wheel drags sliding and resistance to motion occurs when preventing Vehicular turn increases and turn to difficult phenomenon.
The main driving assembly of the vehicle drive axle of prior art, structurally all be that planetary wheel is installed on the compensating-gear shaft, compensating-gear shaft is installed on the differential casing, diff as one independently assembly assembling finish flange connector on the back dependence differential casing and main reduction gear driven gear disc together with bolts assemblies, thereby constituted main driving assembly.The route of vehicle power transmission is, moment of torsion from driving engine is sent into drive axle through change-speed box, transmission shaft, increase through main reduction gear driving and driven gear reduction of speed and to pass to differential casing after turning round, again through differential casing pass to compensating-gear shaft, again arrive planetary wheel, arrive axle side gear again, be sent to the drive wheels at drive axle two ends at last by semiaxis output.
Therefore, there is following defective in prior art: in power transmission process, differential casing is also as a member of bearing torque, and for vehicle, the moment of torsion maxim that differential casing bears can reach tens times to tens times of this car engine output torque, and in order to satisfy the strength and stiffness requirement, differential casing must have certain thickness, more can not make hollow out, the lubricated and radiating condition of movement parts such as diff in-to-in gear is restricted.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of differential casing not compensating-gear shaft and the direct vehicle main driving assembly that assembles of driven gear of transfer torque.
The technical scheme that its technical matters that solves the utility model adopts is: described vehicle main driving assembly comprises main reduction gear and diff, described main reduction gear comprises a pair of intermeshing driving gear and driven gear, described diff is by planetary wheel, compensating-gear shaft, axle side gear and differential casing are formed, described planetary wheel is installed in respectively on the axle journal of corresponding compensating-gear shaft and constitutes planet circular system, described axle side gear is installed in the both sides of described planet circular system and is located by described differential casing, wherein, on the disc of described driven gear, be processed with the groove that the spindle nose structure with described compensating-gear shaft is complementary, the spindle nose of described compensating-gear shaft is directly installed in the groove, and described differential casing and disc are fixedly connected.
Further, the spindle nose of compensating-gear shaft described in the utility model is " protruding " type structure.
Further, groove rectangular distribution described in the utility model.
Further, differential casing described in the utility model is made of two and half shells, and described two and half shells place the both sides of the disc of driven gear respectively.
Compared with prior art, the utility model has the advantages that: (1) is owing to the compensating-gear shaft with diff is directly installed on the disc of main reduction gear driven gear, thereby optimized the path of transmission of power, the input torque of drive axle no longer passes through differential casing, directly just be delivered to the compensating-gear shaft of diff, be delivered to axle side gear by compensating-gear shaft by planetary wheel again by the driven gear of main reduction gear; (2) because differential casing transfer torque no longer, no longer bear torsional interaction and only play a supporting role, thereby can design thinlyyer than the differential casing that adopts at present, even housing can be made the hollow out form, saved the material of housing, simplify the structure, help the lubricated and heat radiation of diff internal gear; (3) in the main transmission structure of prior art, because the suffered radial pressure of backup bearing at differential casing two ends differs bigger, the life-span of bearing differs greatly, and the novel because differential casing of this enforcement transfer torque no longer, thereby improved this situation significantly, the life-span of each bearing is suitable; (4) owing to the compensating-gear shaft of diff is directly installed on the disc of driven gear of main reduction gear, diff and main reduction gear become one, and structure is compactness more.
Description of drawings
Fig. 1 is the assembling scheme drawing of compensating-gear shaft and main deceleration driven gear when diff adopts two planetary wheels in the utility model;
Fig. 2 is the assembling scheme drawing of compensating-gear shaft and main deceleration driven gear when diff adopts three planetary wheels in the utility model;
Fig. 3 is the assembling scheme drawing of compensating-gear shaft and main deceleration driven gear when diff adopts four planetary wheels in the utility model;
Fig. 4 is the structural representation of the driven gear of main reduction gear when diff adopts four planetary wheels in the utility model;
Fig. 5 is the structural representation that diff adopts four planetary compensating-gear shafts in the utility model;
Fig. 6 is the A-A cutaway view of the spindle nose of compensating-gear shaft among Fig. 5.
Fig. 7 is an assembly assembly drowing of the present utility model.
Wherein, 1-driving gear, 2-driven gear, the 3-planetary wheel, 4-compensating-gear shaft, 5-axle side gear, the 6-differential casing, the axle journal of 7-compensating-gear shaft, the disc of 8-driven gear, the spindle nose of 9-compensating-gear shaft, 10-groove, 11-bolt, the 12-tapered roller bearing, the 13-adjustment nut, 14-spherical washer, 15-carriage.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1 to Figure 3, diff of the present utility model can adopt the planetary wheel 3 of varying number according to vehicle size, for example can be 2,3 or 4.Compensating-gear shaft 4 has the axle journal 7 with planetary wheel 3 equal numbers, and planetary wheel 3 is installed in respectively on the axle journal 7 of corresponding compensating-gear shaft and constitutes planet circular system.Wherein, Fig. 1 shows is that two planetary wheels 3 are installed in the structure on two axle journals 7 of compensating-gear shaft 4 respectively; Fig. 2 shows is that three planetary wheels 3 are installed in the structure on three axle journals 7 of compensating-gear shaft 4 respectively; Fig. 3 shows is that four planetary wheels 3 are installed in the structure on four axle journals 7 of compensating-gear shaft 4 respectively.
Fig. 4 shows when four planetary wheels 3 are arranged in the utility model, the structural representation of the driven gear 2 of main reduction gear. wherein, be processed with four the well-distributed grooves 10 identical on the disc 8 of the driven gear 2 of main reduction gear with planetary wheel 3 quantity, the structure of the structure of groove 10 and the spindle nose of compensating-gear shaft 9 is complementary. as shown in Figure 5 and Figure 6, the spindle nose 9 of compensating-gear shaft is " protruding " type structure, so that the spindle nose of this compensating-gear shaft 9 can directly be pressed in the groove 10 that is complementary with its structure (as shown in Figure 1 to Figure 3). especially, when the plane is processed in the both sides at " protruding " type position of the spindle nose 9 of compensating-gear shaft, not only can satisfy the matching requirements of spindle nose 9 with the groove 10 of compensating-gear shaft, can also realize the stressed even of whole contact level, make at moment of torsion when the disc 8 of the driven gear of main reduction gear is directly delivered to compensating-gear shaft 4, the spindle nose 9 of compensating-gear shaft is realized plane contact and is made easy for installation with groove 10, Stability Analysis of Structures. by Fig. 1 to Fig. 3 as seen, when the driven gear 2 to compensating-gear shaft 4 and main reduction gear assembles, a spherical washer 14 is installed, to reduce the wearing and tearing of gear and housing between the disc 8 of each planetary wheel 3 and driven gear.
To shown in Figure 7, when the utility model carried out the assembly assembling, planetary wheel 3 was installed in respectively on the axle journal 7 of corresponding compensating-gear shaft 4 and constitutes planet circular system as Fig. 1.A spherical washer 14 is installed, to reduce the wearing and tearing of gear and housing between the disc 8 of each planetary wheel 3 and driven gear.The spindle nose 9 of compensating-gear shaft directly is pressed in the groove 10 on the disc 8 of driven gear of the main reduction gear that is complementary with its structure.Differential casing 6 is made of left and right two and half shells, two axle side gears 5 are installed in respectively in a left side half shell and right half shell of differential casing 6, again two and half shells are placed the both sides of the disc 8 of driven gear respectively, thus, axle side gear 5 is installed in the planet circular system both sides respectively, and locatees by two and half shells of differential casing 6; Differential casing 6 be installed in driven gear disc 8 both sides and be fixed together by bolt 11.10 pairs of compensating-gear shafts of the groove of driven gear disc inboard 4 constitute the circumferencial direction constraint, and 6 pairs of compensating-gear shafts of differential casing 4 constitute sidewise restraint.The two ends of differential casing 6 are fixed on the carriage 15 of main driving assembly by tapered roller bearing 12, and can carry out axial location by adjustment nut 13.
The driving gear 1 and the driven gear 2 of main reduction gear are meshing with each other.Main reduction gear driving gear 1 is made one with its gear wheel shaft, rely on a pair of tapered roller bearing 16,17 to support, its centre bearer 16 is installed on the carriage 15, bearing 17 is installed on the bearing seat 18, and bearing seat 18 is fixed on the carriage 15 by bolt 19, flange connector 20 is connected by the spline on the axle journal of its inboard spline and driving gear 1, by jam nut 21 this flange connector 20 is locked.
The utility model is when work, moment of torsion is delivered to driving gear 1, the driven gear 2 of main reduction gear by flange connector 20, be directly delivered on the compensating-gear shaft 4 by driven gear 2 again, pass to axle side gear 5 through planetary wheel 3 again, be delivered on the wheel of drive axle both sides through semiaxis by axle side gear 5 again.Owing to the input torque of drive axle no longer is directly passed to compensating-gear shaft 4 through differential casing 6, so 6 of differential casings play a supportive role and no longer bear torsional interaction, have improved the force-bearing situation of diff.
Claims (4)
1. the vehicle main driving assembly that directly assembles of compensating-gear shaft and driven gear, comprise main reduction gear and diff, described main reduction gear comprises a pair of intermeshing driving gear (1) and driven gear (2), described diff is by planetary wheel (3), compensating-gear shaft (4), axle side gear (5) and differential casing (6) are formed, described planetary wheel (3) is installed in the axle journal (7) of corresponding compensating-gear shaft respectively and goes up the formation planet circular system, described axle side gear (5) is installed in the both sides of described planet circular system and is located by described differential casing (6), it is characterized in that: on the disc (8) of described driven gear, be processed with the groove (10) that spindle nose (9) structure with described compensating-gear shaft is complementary, the spindle nose of described compensating-gear shaft (9) is directly installed in the groove (10), and described differential casing (6) is fixedly connected with disc.
2. the vehicle main driving assembly that compensating-gear shaft according to claim 1 and driven gear directly assemble is characterized in that: the spindle nose of described compensating-gear shaft (9) is " protruding " type structure.
3. the vehicle main driving assembly that compensating-gear shaft according to claim 1 and driven gear directly assemble is characterized in that: described groove (10) rectangular distribution.
4. the vehicle main driving assembly that compensating-gear shaft according to claim 1 and driven gear directly assemble is characterized in that: described differential casing (6) is made of two and half shells, and described two and half shells place the both sides of the disc (8) of described driven gear respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201239550U CN201457042U (en) | 2009-07-02 | 2009-07-02 | Vehicle master-drive assembly directly assembled by planetary gear shaft and driven gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201239550U CN201457042U (en) | 2009-07-02 | 2009-07-02 | Vehicle master-drive assembly directly assembled by planetary gear shaft and driven gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201457042U true CN201457042U (en) | 2010-05-12 |
Family
ID=42384395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201239550U Expired - Fee Related CN201457042U (en) | 2009-07-02 | 2009-07-02 | Vehicle master-drive assembly directly assembled by planetary gear shaft and driven gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201457042U (en) |
-
2009
- 2009-07-02 CN CN2009201239550U patent/CN201457042U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20100702 |