CN218152220U - Through drive axle main reducer assembly - Google Patents
Through drive axle main reducer assembly Download PDFInfo
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- CN218152220U CN218152220U CN202222203188.2U CN202222203188U CN218152220U CN 218152220 U CN218152220 U CN 218152220U CN 202222203188 U CN202222203188 U CN 202222203188U CN 218152220 U CN218152220 U CN 218152220U
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- speed reducer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The utility model discloses a through drive axle main reducer assembly, this kind of through axle main reducer assembly includes: the device comprises a lightweight speed reducer shell, a bevel gear pair, a large and small main cone bearing and a cup-shaped pre-tightening spacer bush; the main speed reducer assembly of the through axle further comprises an inter-wheel differential assembly, an inter-axle differential assembly and an output shaft flange assembly; the left differential shell, the right differential shell and the driven bevel gear of the inter-wheel differential assembly are connected through laser welding; the driving cylindrical wheel, the half axle gear and the main shaft of the interaxle differential assembly are all in a needle roller bearing structure.
Description
Technical Field
The utility model belongs to the technical field of automobile parts, a through transaxle main reducer assembly is related to.
Background
The main reducer assembly is used as an important component in an automobile drive axle and plays a role in reducing the rotating speed and increasing the torque in a transmission system. At present, with the continuous rising of oil price and the background of strictly forbidding overload, customers face greater cost pressure, so how to reduce the oil consumption of the whole vehicle, improve the efficiency and the reliability of the whole vehicle and reduce the cost in the aspect of axle design is the problem to be solved firstly. The traditional differential shell between the axle wheels and the driven bevel gear are connected by bolts, so that the whole main reducer assembly is heavy and the oil consumption is increased; and the pretightening force adjustment of the driving bevel gear bearing of the traditional axle main reducer is realized by continuously disassembling the bearing and replacing an adjusting gasket, the assembly efficiency of the whole axle is seriously influenced, and the production and manufacturing cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a through transaxle main reducer assembly has the characteristics of the reliability height, lightweight, low cost.
The utility model discloses the technical scheme who adopts is, a through drive axle main reducer assembly, include: the main speed reducer comprises a main speed reducer shell assembly, a bearing seat, a gap bridge box cover, a bevel gear pair, a cup-shaped pre-tightening spacer bush, an inter-wheel differential assembly, an inter-axle differential assembly, a gap bridge shaft flange, an oil temperature sensor and a wire harness support;
the bevel gear pair comprises a driving bevel gear and a driven bevel gear; the driving bevel gear is sleeved with a main cone large bearing and a main cone small bearing and is arranged in a bearing seat, and the bearing seat is arranged on a main speed reducer shell through a bolt; the inter-wheel differential assembly is connected with the driven bevel gear through a bolt and is arranged on a main speed reducer shell; the flange assembly is connected with a main shaft in the interaxial differential assembly through a spline, and the interaxial differential assembly is connected with a driving bevel gear through a driving cylindrical gear pair and a driven cylindrical gear pair on one hand to drive left and right wheels; on the other hand, the rear drive axle is connected with the flange assembly of the intermediate axle through the half axle gear;
the inter-wheel differential assembly consists of a left differential shell, a right differential shell, a cross shaft, a planet wheel and a half shaft gear; the interaxial differential assembly is composed of a driving cylindrical gear, a driven cylindrical gear, a main shaft, an interaxial differential shell, a planet gear, a cross shaft and a semi-shaft gear.
Furthermore, the wall thickness of the cup-shaped pre-tightening spacer sleeve is 2-3.5 mm; the large-diameter end and the small-diameter end are hollow cylinders with openings at two ends, the inner diameter of the small-diameter end is smaller than that of the large-diameter end, the small-diameter end is attached to the inner ring of the small main cone bearing, and the large-diameter end is attached to the inner ring of the large main cone bearing.
Furthermore, the left difference shell and the right difference shell are welded by laser, and the welding line is a V-shaped welding line which forms an angle of 25-40 degrees with the vertical direction; the right differential shell is also welded with the driven bevel gear by laser, and the welding line is a V-shaped welding line which forms 25-40 degrees with the vertical direction.
Further, the wire harness support is L-shaped and is installed on the speed reducer shell and the gap bridge box cover through the double-end stud and the nut, and the installation number is smaller than the total number of the bolts.
Furthermore, the driving cylindrical gear is radially matched with the main shaft by adopting a needle bearing; the half axle gear and the main shaft are matched by adopting a needle bearing.
Furthermore, the reducer shell is also provided with a guide bearing seat hole, 5 reinforcing ribs are radially and uniformly distributed in the 180-degree range of one side of the guide bearing seat hole close to the outer edge of the reducer shell, the reinforcing ribs are connected with the guide bearing seat hole and the reducer shell, and the thickness of each reinforcing rib is 10-13 mm.
Further, the oil temperature sensor is installed on the speed reducer shell through an oil temperature sensor installation hole, and L2= 110-113 mm and L1= 95-100 mm are arranged on the right side of the lower portion of the center of the speed reducer shell; the size is as follows: M12X 1.5.
Furthermore, an oil collecting groove is formed in the speed reducer shell.
Furthermore, 5 reinforcing ribs are respectively arranged at the positions with weak rigidity on the outer wall of the speed reducer shell, and the thickness of each reinforcing rib is 8-10 mm; the positions of the rigidity weakness are specifically: the reinforcing rib I is positioned below the main speed reducer shell, the starting end of the reinforcing rib I is flush with the mounting surface of the bearing seat, and the terminating end of the reinforcing rib I is tangent to the speed reducer shell; the reinforcing ribs II and the reinforcing ribs III are positioned at the mounting side of the interaxial differential assembly below the speed reducer shell, the starting ends of the reinforcing ribs II and the reinforcing ribs III are flush with the bearing mounting surface of the half axle gear, and the terminating ends of the reinforcing ribs II and the speed reducer shell are tangent; the reinforcing rib IV and the reinforcing rib V are positioned above the main speed reducer shell, the starting end of the reinforcing rib IV is flush with the mounting surface of the cover of the gap axle box, the reinforcing rib V is flush with the bearing mounting surface of a half axle gear of the inter-wheel differential assembly, the terminating ends of the reinforcing rib IV and the reinforcing rib V are tangent with the speed reducer shell, and the reinforcing rib IV and the reinforcing rib V are parallel and have a distance of 125-130 mm; the reinforcing ribs IV are parallel to the central line of the main speed reducer shell, and the distance between the reinforcing ribs IV and the main speed reducer shell is 5mm. The reinforcing rib V is positioned on the side of the differential lock.
The utility model has the advantages that:
speed reducer shell through lightweight design and strengthening rib design, on the unchangeable basis of assurance support rigidity, maximum stress reduces 20%. The weight is reduced by 6kg, and the reliability of the main reducer assembly is improved; the laser welding differential shell assembly of the utility model realizes the weight reduction of a single bridge by 5-7 kg and the cost reduction of the single bridge by 30-35 yuan;
the needle bearing arranged between the radial direction of the driving cylindrical gear of the interaxial differential assembly and the main shaft of the utility model avoids the abnormal abrasion caused by the sliding friction when the driving cylindrical gear rotates around the main shaft and avoids the early abrasion caused by unbalance loading;
the needle bearing that is equipped with between the radial and main shaft of interaxial differential mechanism assembly differential side gear has avoided the unusual wearing and tearing that sliding friction caused when initiative cylinder wheel rotates around the main shaft, avoids the early wearing and tearing that the unbalance loading caused.
The cup-shaped pre-tightening spacer sleeve of the utility model can avoid repeated disassembly and assembly and replacement of the gasket when the pre-tightening force of the main cone bearing is adjusted, and improve the assembly efficiency of the production line by about 35 percent;
wire harness support can optimize whole car spool way and arrange, prevents that the unable fixed vehicle-mounted swing of spool way leads to the interface not hard up, influences whole car signal. The fixed line pipeline can improve the signal stability of the whole vehicle, and meanwhile, the attractiveness of line pipeline arrangement is guaranteed.
Drawings
Fig. 1 is a schematic sectional structural view of an inter-axle differential assembly of a main reducer assembly of an automobile through axle of the present invention;
FIG. 2 is a schematic diagram: is a schematic view of the cross-sectional structure of an inter-wheel differential assembly of a main speed reducer assembly of an automobile through axle in the utility model;
FIG. 3: is the side view of the main speed reducer shell of the utility model.
FIG. 4: is a top view of fig. 3;
FIG. 5: is an X-direction view of FIG. 3;
FIG. 6: is a top view of fig. 2;
FIG. 7: do the utility model discloses main reducer shell side view.
In the figure, 1, a speed reducer shell; 11. reinforcing ribs; 12. a guide bearing housing bore; 121. reinforcing ribs; 13. an oil guide groove; 2. a bearing seat; 3. a bridge box cover; 31. an oil temperature sensor mounting hole; 4. a bevel gear pair; 41. a drive bevel gear; 42. a main cone small bearing; 43. a cup-shaped pre-tightening spacer bush; 44. a main cone large bearing; 45. a driven bevel gear; 5, an inter-axle differential assembly; 51. a driven cylindrical gear; 52. a driving cylindrical gear; 53. a main shaft; 54. a half shaft gear; a 55 needle roller bearing; 6. a wire harness support; 61. a stud; 62. a nut; 7. an inter-wheel differential assembly; 71. left differential shell; 72. a right differential housing; 8. an oil temperature sensor.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-2: a through drive axle final drive assembly, comprising: the main speed reducer comprises a main speed reducer shell assembly 1, a bearing seat 2, a gap axle box cover 3, a bevel gear pair 4, a cup-shaped pre-tightening spacer 43, an inter-wheel differential assembly 7, an inter-axle differential assembly 5, a gap axle flange, an oil temperature sensor 8 and a wiring harness bracket 6; the inter-wheel differential assembly 7 consists of a left differential shell 71, a right differential shell 72, a cross shaft, a planet wheel and a half shaft gear; the interaxial differential assembly 5 is composed of a driving cylindrical gear 52, a driven cylindrical gear 51, a main shaft 53, an interaxial differential case, a planet wheel, a cross shaft and a side gear 54. The bevel gear pair 4 is arranged in a bearing seat 2, and the bearing seat 2 is fixed on a main speed reducer shell 1 through a bolt; the inter-wheel differential assembly 7 is connected with the driven bevel gear 45 through a bolt and is arranged on the main speed reducer shell 1; the input flange assembly is connected with a main shaft in the interaxial differential assembly 5 through a spline to input power, and on one hand, the interaxial differential assembly 5 is connected with a driving bevel gear 41 through a driving and driven cylindrical gear pair to transmit the power to a bevel gear pair 4 and further to a left wheel and a right wheel; and on the other hand, the power is transmitted to the rear drive axle through the connection of the side gear 54 and the flange assembly of the intermediate axle.
For the inter-wheel differential assembly 7, firstly, a cross shaft, a planetary gear and a half axle gear are arranged in the right differential shell 72, the right differential shell 72 and the left differential shell 7 are subjected to laser welding, and then the driven bevel gear 45 and the right differential shell 72 are subjected to laser welding; according to the differential shell laser welding scheme, 18 connecting bolts can be omitted, the left differential shell and the right differential shell are designed in a light weight mode, the single bridge is reduced by 7kg in weight, and the cost of the single bridge is reduced by 30 yuan;
the wall thickness of the cup-shaped pre-tightening spacer bush 43 is 2-3.5 mm; the small-diameter end and the large-diameter end are both hollow cylinders with openings at two ends, the inner diameter of the small-diameter end is smaller than that of the large-diameter end, the small-diameter end is attached to the inner ring of the small main cone bearing 42, and the large-diameter end is attached to the inner ring of the large main cone bearing 44. The cup-shaped pre-tightening spacer 43 can complete the adjustment of the pre-tightening force of the main cone bearing at one time, and the assembly efficiency can be improved.
The left differential shell 71 and the right differential shell 72 are welded by laser, and the welding line is a V-shaped welding line which is 25-40 degrees to the vertical direction; the right differential shell 72 is also welded with the driven bevel gear 45 by laser, and the welding line is a V-shaped welding line which is 25-40 degrees from the vertical direction.
The wire harness support 6 is an L-shaped bent part with the thickness of 2-4 mm, holes with the sizes of phi 8-phi 10 and phi 14-phi 20 are respectively arranged at two ends of the wire harness support, the wire harness support is installed on the speed reducer shell 1 and the bridge box cover 3 through a stud 61 and a nut 62, and the installation number is smaller than the total number of bolts. The device is used for fixing the whole vehicle line pipeline, and the stability of signals and the attractiveness of the whole vehicle wiring harness arrangement are guaranteed.
The driving cylindrical gear 52 is radially matched with the main shaft 53 by adopting a needle bearing 55; the side gear 54 is also fitted with the main shaft 53 using a needle bearing 55.
The reducer casing 1 is further provided with a guide bearing seat hole 12, 5 reinforcing ribs 121 are radially and uniformly distributed in the 180-degree range of one side, close to the outer edge of the reducer casing 1, of the guide bearing seat hole 12, the reinforcing ribs 121 are connected with the guide bearing seat hole 12 and the reducer casing 1, and the thickness of each reinforcing rib 121 is 10-13 mm.
In order to ensure the reliability, 5 reinforcing ribs 11 are arranged between the speed reducer shell 1 and the bearing seat mounting surface, so that the rigidity of the speed reducer shell is unchanged after the speed reducer shell is lightened, the maximum stress is reduced, and the reliability of the main speed reducer is ensured.
The oil temperature sensor 8 is mounted on the reducer casing 1 through an oil temperature sensor mounting hole 31, and is L2= 110-113 mm and L1= 95-100 mm away from the lower part of the center of the reducer casing 1; the size is as follows: M12X 1.5. The temperature of the lubricating oil can be monitored constantly, and the bearing and oil seal failure caused by overhigh oil temperature is avoided. The directions of the upper part, the right side and the like are all based on the direction indication of the attached drawings.
An oil collecting groove 13 is also arranged in the speed reducer shell 1.
The outer wall of the speed reducer shell 1 is respectively provided with 5 reinforcing ribs 11 at the positions with weak rigidity, and the thickness of the reinforcing ribs is 8-10 mm. The reinforcing rib I is positioned below the main speed reducer shell 1, the starting end of the reinforcing rib I is flush with the mounting surface of the bearing seat 2, and the terminating end of the reinforcing rib I is tangent to the speed reducer shell 1; the reinforcing ribs II and the reinforcing ribs III are positioned at the mounting side of the interaxial differential assembly 5 below the speed reducer shell 1, the starting ends of the reinforcing ribs II and the reinforcing ribs III are flush with the bearing mounting surface of the half axle gear 54, and the terminating ends of the reinforcing ribs II and the bearing mounting surface are tangent to the speed reducer shell 1; the reinforcing rib IV and the reinforcing rib V are positioned above the main speed reducer shell 1, the starting end of the reinforcing rib IV is flush with the mounting surface of the gap axle box cover 3, the reinforcing rib V is flush with the bearing mounting surface of a half axle gear 54 of the inter-wheel differential assembly 7, the terminating ends of the reinforcing rib IV and the reinforcing rib V are tangent to the speed reducer shell 1, and the reinforcing rib IV and the reinforcing rib V are parallel and have a distance of 125-130 mm; wherein the strengthening rib IV is parallel with the central line of the main speed reducer shell 1, the distance is 5mm, and the strengthening rib V is positioned at the side of the differential lock.
Claims (9)
1. A through drive axle final drive assembly, comprising: the device comprises a speed reducer shell (1), a bearing seat (2), a gap bridge box cover (3), a bevel gear pair (4), a cup-shaped pre-tightening spacer bush (43), an inter-wheel differential assembly (7), an inter-axle differential assembly (5), a gap bridge shaft flange, an oil temperature sensor (8) and a wiring harness support (6);
the bevel gear pair (4) comprises a driving bevel gear (41) and a driven bevel gear (45); a main cone large bearing (44) and a main cone small bearing (42) are sleeved on the driving bevel gear (41) and are installed in a bearing seat (2), and the bearing seat (2) is installed on the main speed reducer shell (1) through bolts; the inter-wheel differential assembly (7) is connected with the driven bevel gear (45) through a bolt and is arranged on the main speed reducer shell (1); the flange assembly is connected with a main shaft in the interaxial differential assembly (5) through a spline, and the interaxial differential assembly (5) is connected with a driving bevel gear (41) through a driving cylindrical gear pair and a driven cylindrical gear pair on one hand to drive left and right wheels; on the other hand, the rear drive axle is connected with the gap axle flange assembly through a half shaft gear (54) so as to be connected with the rear drive axle;
the differential mechanism assembly (7) between the wheels is characterized by comprising a left differential shell (71), a right differential shell (72), a cross shaft, a planet wheel and a half shaft gear; the interaxial differential assembly (5) is composed of a driving cylindrical gear (52), a driven cylindrical gear (51), a main shaft (53), an interaxial differential shell, a planet wheel, a cross shaft and a half shaft gear (54).
2. A through-drive axle final drive assembly according to claim 1, characterized in that the cup-shaped pre-tightening spacer (43) has a wall thickness of 2-3.5 mm; the large-diameter end and the small-diameter end are hollow cylinders with openings at two ends, the inner diameter of the small-diameter end is smaller than that of the large-diameter end, the small-diameter end is attached to an inner ring of a small main cone bearing (42), and the large-diameter end is attached to an inner ring of a large main cone bearing (44).
3. A through-drive axle final drive assembly according to claim 1, wherein the left differential shell (71) and the right differential shell (72) are laser welded, and the weld is a V-shaped weld which is 25-40 ° from the vertical direction; the right differential shell (72) is also welded with the driven bevel gear (45) by laser, and the welding line is a V-shaped welding line which is 25-40 degrees from the vertical direction.
4. A through-drive axle final drive assembly according to claim 1, characterized in that the harness support (6) is L-shaped and is mounted on the speed reducer case (1) and the intermediate box cover (3) through a stud (61) and a nut (62), and the mounting number is less than the total number of bolts.
5. A through drive axle final drive assembly according to claim 1, characterized in that the driving spur gear (52) is radially fitted with the main shaft (53) by means of a needle bearing (55); the side gear (54) is engaged with the main shaft (53) by a needle bearing (55).
6. A through-type transaxle final drive assembly of claim 1, characterized in that, the reducer case (1) still has guide bearing seat hole (12), guide bearing seat hole (12) is close to 180 degrees scope of one side of outer edge of reducer case (1) and appears 5 strengthening ribs (121) of radial equipartition, the strengthening rib (121) connects guide bearing seat hole (12) and reducer case (1), strengthening rib (121) thickness 10 ~ 13mm.
7. A through-type drive axle final drive assembly according to claim 1, characterized in that the oil temperature sensor (8) is mounted on the reducer casing (1) through an oil temperature sensor mounting hole (31), and is L2= 110-113 mm and L1= 95-100 mm on the right side from the lower part of the center of the reducer casing (1); the size is as follows: M12X 1.5.
8. A through drive axle final drive assembly according to claim 1, characterized in that an oil sump (13) is also provided inside the reducer case (1).
9. A through-drive axle final drive assembly according to claim 1, wherein 5 reinforcing ribs (11) are respectively arranged on the outer wall of the speed reducer casing (1) at the positions with weak rigidity, the thickness of the reinforcing ribs is 8-10 mm, and the positions with weak rigidity are specifically: the reinforcing rib I is positioned below the main speed reducer shell (1), the starting end of the reinforcing rib I is flush with the mounting surface of the bearing seat (2), and the terminating end of the reinforcing rib I is tangent to the speed reducer shell (1); the reinforcing ribs II and the reinforcing ribs III are positioned at the mounting side of the interaxial differential assembly (5) below the speed reducer shell (1), the starting ends of the reinforcing ribs II and the reinforcing ribs III are flush with the bearing mounting surface of the half axle gear (54), and the terminating ends of the reinforcing ribs III are tangent to the speed reducer shell (1); the reinforcing ribs IV and the reinforcing ribs V are positioned above the main speed reducer shell (1), the starting ends of the reinforcing ribs IV are flush with the mounting surface of the gap box cover (3), the reinforcing ribs V are flush with the bearing mounting surface of a half axle gear (54) of the inter-wheel differential assembly (7), the terminating ends of the reinforcing ribs IV and the reinforcing ribs V are tangent to the speed reducer shell (1), and the reinforcing ribs IV and the reinforcing ribs V are parallel and have a distance of 125-130 mm; the reinforcing ribs IV are parallel to the central line of the main speed reducer shell (1) and are spaced by 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222203188.2U CN218152220U (en) | 2022-08-22 | 2022-08-22 | Through drive axle main reducer assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222203188.2U CN218152220U (en) | 2022-08-22 | 2022-08-22 | Through drive axle main reducer assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218152220U true CN218152220U (en) | 2022-12-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222203188.2U Active CN218152220U (en) | 2022-08-22 | 2022-08-22 | Through drive axle main reducer assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218152220U (en) |
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2022
- 2022-08-22 CN CN202222203188.2U patent/CN218152220U/en active Active
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